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Arxiv.org
by R. Maiolino; G. Risaliti; M. Salvati; P. Pietrini; G. Torricelli-Ciamponi; M. Elvis; G. Fabbiano; V. Braito; J. Reeves
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We use a long (300 ksec), continuous Suzaku X-ray observation of the active nucleus in NGC1365 to investigate the structure of the circumnuclear BLR clouds through their occultation of the X-ray source. The variations of the absorbing column density and of the covering factor indicate that the clouds surrounding the black hole are far from having a spherical geometry (as sometimes assumed), instead they have a strongly elongated and cometary shape, with a dense head (n=10^11 cm^-3) and an...
Source: http://arxiv.org/abs/1005.3365v1
Radio Ecoshock
by Alex Smith
audio

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"From the Deepwater Horizon" After the massive Gulf of Mexico leak, Dr. Riki Ott, marine biologist, fisherwoman, spill expert, reports from New Orleans. Plus Antonia Juhasz, Global Exchange oil researcher, on BP & the Washington lobby. Song: "Corporate Catastrophe" by Dana Pearson. Radio Ecoshock as broadcast on Green 960 San Francisco 24 min. May 2010.
Topics: radio, environment, green, oceans, ecology, environmentalism, fish, fisheries, radio ecoshock, oil,...
Arxiv.org
by Jens Madsen Houlrik; Germain Rousseaux
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The kinematics of particles refer to events and tangent vectors, while that of waves refer to dual gradient planes. Special relativity [1-3] applies to both objects alike. Here we show that spacetime exchange symmetry [7] implicit in the SIdefinition of length based on the universal constant c has profound consequences at low velocities. Galilean physics, exact in the limit c \to \infty, is mirrored by a dual so-called Carrollian superluminal kinematics [4-6] exact in the limit c \to 0. Several...
Source: http://arxiv.org/abs/1005.1762v1
Arxiv.org
by A. Bartl; W. Majerotto; K. Moenig; A. N. Skachkova; N. B. Skachkov
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We study the pair production of scalar top quarks in e+e- collisions with the subsequent decay of the top squarks into b-quarks and charginos. We simulate this process using PYTHIA6.4 for beam energies 2E_beam = 350, 400, 500, 800, 1000 GeV. Proposing a set of criteria we obtain a good separation of the signal stop events from top quark pair production which is the main background. The number of stop production events obtained with the proposed cuts for different energies is calculated for an...
Source: http://arxiv.org/abs/0804.2125v3
Arxiv.org
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We briefly discuss the transcendental constants generated through the epsilon-expansion of generalized hypergeometric functions and their interrelation with the "sixth root of unity."
Source: http://arxiv.org/abs/1007.2373v2
Arxiv.org
by T. G. Mueller; E. Lellouch; J. Stansberry; C. Kiss; P. Santos-Sanz; E. Vilenius; S. Protopapa; R. Moreno; M. Mueller; A. Delsanti; R. Duffard; S. Fornasier; O. Groussin; A. W. Harris; F. Henry; J. Horner; P. Lacerda; T. Lim; M. Mommert; J. L. Ortiz; M. Rengel; A. Thirouin; D. Trilling; A. Barucci; J. Crovisier; A. Doressoundiram; E. Dotto; P. J. Gutierrez; O. R. Hainaut; P. Hartogh; D. Hestroffer; M. Kidger; L. Lara; B. Swinyard; N. Thomas
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The goal of the Herschel Open Time Key programme "TNOs are Cool!" is to derive the physical and thermal properties for a large sample of Centaurs and trans-Neptunian objects (TNOs), including resonant, classical, detached and scattered disk objects. We present results for seven targets either observed in PACS point-source, or in mini scan-map mode. Spitzer-MIPS observations were included for three objects. The sizes of these targets range from 100 km to almost 1000 km, five have low...
Source: http://arxiv.org/abs/1005.2923v1
Deb Cotton Secondline Collection
movies

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that tribal shyt rightchere! Rolling thru the Treme 6th Ward waaaay downtown with the Stooges Brass Band Source: https://www.youtube.com/watch?v=wvPt_3mMLE4 Uploader: BigRedCotton Upload date: 20101005
Topics: Youtube, video, Music, Stooges Brass Band, New Orleans, Treme, second line parade, debcotton,...
Arxiv.org
by Pietro Caputo; Fabio Martinelli; Francois Simenhaus; Fabio Lucio Toninelli
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We consider the Glauber dynamics for the Ising model with "+" boundary conditions, at zero temperature or at temperature which goes to zero with the system size (hence the quotation marks in the title). In dimension d=3 we prove that an initial domain of linear size L of "-" spins disappears within a time \tau_+ which is at most L^2(\log L)^c and at least L^2/(c\log L), for some c>0. The proof of the upper bound proceeds via comparison with an auxiliary dynamics which...
Source: http://arxiv.org/abs/1007.3599v2
Arxiv.org
by Shuiguo Wen; Zhenyu Zhang; Jueping Liu
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Based on a semiclassical expansion for quantum chromodynamics in the instanton liquid background, the correlation function of the $0^{++}$ scalar glueball current is given, and the properties of the $0^{++}$ scalar glueball are studied in the framework of Gaussian sum rules. Besides the pure classical and quantum contributions, the contributions arising from the interactions between the classical instanton fields and quantum gluons are come into play. Instead of the usual zero-width...
Source: http://arxiv.org/abs/1007.2465v2
Arxiv.org
by Sreraman Muralidharan; Siddharth Karumanchi; Sakshi Jain; R. Srikanth; Prasanta K. Panigrahi
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We introduce a new genuinely 2N qubit state, known as the "mirror state" with interesting entanglement properties. The well known Bell and the cluster states form a special case of these "mirror states", for N=1 and N=2 respectively. It can be experimentally realized using $SWAP$ and multiply controlled phase shift operations. After establishing the general conditions for a state to be useful for various communicational protocols involving quantum and classical information,...
Source: http://arxiv.org/abs/0804.4206v5
Arxiv.org
by Alan Adolphson; Steven Sperber
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We establish some connections between nonresonant $A$-hypergeometric systems and de Rham-type complexes. This allows us to determine which of these $A$-hypergeometric systems "come from geometry."
Source: http://arxiv.org/abs/1007.4030v1
Arxiv.org
by Brenden Ashton; Ian Doust
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In this paper we present a new extension of the theory of well-bounded operators to cover operators with complex spectrum. In previous work a new concept of the class of absolutely continuous functions on a nonempty compact subset $\sigma$ of the plane, denoted $AC(\sigma)$, was introduced. An $\AC(\sigma)$ operator is one which admits a functional calculus for this algebra of functions. The class of $AC(\sigma)$ operators includes all of the well-bounded operators and trigonometrically...
Source: http://arxiv.org/abs/0807.1045v2
Arxiv.org
by Andrew Conner; Pete Goetz
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The notion of a $\mathcal{K}_2$-algebra was recently introduced by Cassidy and Shelton as a generalization of the notion of a Koszul algebra. The Yoneda algebra of any connected graded algebra admits a canonical $A_{\infty}$-algebra structure. This structure is trivial if the algebra is Koszul. We study the $A_{\infty}$-structure on the Yoneda algebra of a $\mathcal{K}_2$-algebra. For each non-negative integer $n$ we prove the existence of a $\mathcal{K}_2$-algebra $B$ and a canonical...
Source: http://arxiv.org/abs/1005.5185v2
Arxiv.org
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In this work we study solutions of the prescribed mean curvature equation over a general domain that do not necessarily attain the given boundary data. To such a solution, we can naturally associate a current with support in the closed cylinder above the domain and with boundary given by the prescribed boundary data and which inherits a natural minimizing property. Our main result is that its support is a $C^{1,\alpha}$ manifold-with-boundary, with boundary equal to the prescribed boundary...
Source: http://arxiv.org/abs/1007.3402v1
Arxiv.org
by Yan-Rui Liu; Makoto Oka; Makoto Takizawa; Xiang Liu; Wei-Zhen Deng; Shi-Lin Zhu
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S and P wave $D\bar{D}$ scatterings are studied in a meson exchange model with the coupling constants obtained in the heavy quark effective theory. With the extracted P wave phase shifts and the separable potential approximation, we include the $D\bar{D}$ rescattering effect and investigate the production process $e^+e^-\to D\bar{D}$. We find that it is difficult to explain the anomalous line shape observed by the BES collaboration with this mechanism. Combining our model calculation and the...
Source: http://arxiv.org/abs/1005.2262v2
Arxiv.org
by Shuiguo Wen; Jueping Liu
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The masses of the $D_s(0^\pm)$ mesons are investigated from a view-point of ordinary light-heavy system in the framework of the Gaussian sum rules, which are worked out by means of the Laplacian transformation to the usual Borel sum rules. Using the standard input of QCD non-perturbative parameters, the corresponding mass spectra and couplings of the currents to the $D_s(0^\pm)$ mesons are obtained. Our results are $m_{D_s(0^-)}=1.968\pm0.016\pm0.003$ GeV and...
Source: http://arxiv.org/abs/1005.5066v1
Arxiv.org
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We study the in-medium masses of the charmonium states $J/\psi$ and $\eta_{c}$ in the nuclear medium using QCD sum rule approach. These mass modifications arise due to modifications of the scalar and the twist-2 gluon condensates in the hot hadronic matter. The scalar gluon condensate, $ $ and the twist-2 tensorial gluon operator, $ $ in the nuclear medium are calculated from the medium modification of a scalar dilaton field introduced to incorporate trace anomaly of QCD within the chiral SU(3)...
Source: http://arxiv.org/abs/1005.2748v2
Arxiv.org
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Let $\Gamma$ be a Coxeter graph, let $(W,S)$ be its associated Coxeter system, and let $(A,\Sigma$) be its associated Artin-Tits system. We regard $W$ as a reflection group acting on a real vector space $V$. Let $I$ be the Tits cone, and let $E_\Gamma$ be the complement in $I +iV$ of the reflecting hyperplanes. Recall that Charney, Davis, and Salvetti have constructed a simplicial complex $\Omega(\Gamma)$ having the same homotopy type as $E_\Gamma$. We observe that, if $T \subset S$, then...
Source: http://arxiv.org/abs/1007.1365v1
Arxiv.org
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In this paper, we prove the nonexistence of $L^2$ harmonic 1-forms on a complete super stable minimal submanifold $M$ in hyperbolic space under the assumption that the first eigenvalue $\lambda_1 (M)$ for the Laplace operator on $M$ is bounded below by $(2n-1)(n-1)$. Moreover, we provide sufficient conditions for minimal submanifolds in hyperbolic space to be super stable.
Source: http://arxiv.org/abs/1007.0663v1
Arxiv.org
by Tomasz S. Mrowka; Katrin Wehrheim
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We examine the $L^2$-topology of the gauge orbits over a closed Riemann surface. We prove a subtle local slice theorem based on the div-curl Lemma of harmonic analysis, and deduce local pathwise connectedness and local uniform quasiconvexity of the gauge orbits. Using these, we generalize compactness results for anti-self-dual instantons with Lagrangian boundary counditions to general gauge invariant Lagrangian submanifolds. This provides the foundation for the construction of instanton Floer...
Source: http://arxiv.org/abs/1005.0731v1
Arxiv.org
by Jordi Marzo; Kristian Seip
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The norm of the Riesz projection from $L^\infty(\T^n)$ to $L^p(\T^n)$ is considered. It is shown that for $n=1$, the norm equals $1$ if and only if $p\le 4$ and that the norm behaves asymptotically as $p/(\pi e)$ when $p\to \infty$. The critical exponent $p_n$ is the supremum of those $p$ for which the norm equals $1$. It is proved that $2+2/(2^n-1)\le p_n 1$; it is unknown whether the critical exponent for $n=\infty$ exceeds $2$.
Source: http://arxiv.org/abs/1005.1842v1
Arxiv.org
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The Dirichlet boundary value problem for the Stokes operator with $L^p$ data in any dimension on domains with conical singularity (not necessary a Lipschitz graph) is considered. We establish the solvability of the problem for all $p\in (2-\varepsilon,\infty]$ and also its solvability in $C(\overline{D})$ for the data in $C(\partial D)$
Source: http://arxiv.org/abs/1007.5495v1
Arxiv.org
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The aim of this paper is to study the spectrum of the $L^p$ Laplacian and the dynamics of the $L^p$ heat semigroup on non-compact locally symmetric spaces of higher rank. Our work here generalizes previously obtained results in the setting of locally symmetric spaces of rank one to higher rank spaces. Similarly as in the rank one case, it turns out that the $L^p$ heat semigroup on $M$ has a certain chaotic behavior if $p\in(1,2)$ whereas for $p\geq 2$ such a chaotic behavior never occurs.
Source: http://arxiv.org/abs/1005.2988v1
Arxiv.org
by Z. G. Huang; H. Q. Lu
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$Om$ diagnostic can differentiate between different models of dark energy without the accurate current value of matter density. We apply this geometric diagnostic to dilaton dark energy(DDE) model and differentiate DDE model from LCDM. We also investigate the influence of coupled parameter $\alpha$ on the evolutive behavior of $Om$ with respect to redshift $z$. According to the numerical result of $Om$, we get the current value of equation of state $\omega_{\sigma0}$=-0.952 which fits the...
Source: http://arxiv.org/abs/1005.0433v1
Arxiv.org
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We study sequences $f_k:\Sigma_k \to \R^n$ of conformally immersed, compact Riemann surfaces with fixed genus and Willmore energy ${\cal W}(f) \leq \Lambda$. Assume that $\Sigma_k$ converges to $\Sigma$ in moduli space, i.e. $\phi_k^\ast(\Sigma_k) \to \Sigma$ as complex structures for diffeomorphisms $\phi_k$. Then we construct a branched conformal immersion $f:\Sigma \to \R^n$ and M\"obius transformations $\sigma_k$, such that for a subsequence $\sigma_k \circ f_k \circ \phi_k \to f$...
Source: http://arxiv.org/abs/1007.3967v2
Arxiv.org
by Rahim Moosa; Anand Pillay
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Essential $\aleph_0$-categoricity; i.e., $\aleph_0$-categoricity in some full countable language, is shown to be a robust notion for strongly minimal compact complex manifolds. Characterisations of triviality and essential $\aleph_0$-categoricity are given in terms of complex-analytic automorphisms, in the simply connected case, and correspondences in general. As a consequence it is pointed out that an example of McMullen yields a strongly minimal compact K\"ahler manifold with trivial...
Source: http://arxiv.org/abs/1007.0731v1
Arxiv.org
by Laura Tolos; Raquel Molina; Eulogio Oset; Angels Ramos
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The properties of the $\bar K^*$ meson in dense matter are studied using a unitary approach in coupled channels within the framework of the local hidden gauge formalism. We obtain the $\bar K^*$ spectral function in the nuclear medium and we found that the $\bar K^*$ develops an in-medium width up to five times bigger than in free space. We also estimate the transparency ratio of the $\gamma A \to K^+ K^{*-} A^\prime$ reaction, which we propose as a feasible experimental scenario to detect...
Source: http://arxiv.org/abs/1007.4979v1
Arxiv.org
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The $f(R)$ gravity models formulated in Einstein conformal frame are equivalent to Einstein gravity together with a minimally coupled scalar field. We shall explore phantom behavior of $f(R)$ models in this frame and compare the results with those of the usual notion of phantom scalar field.
Source: http://arxiv.org/abs/1005.5679v2
Arxiv.org
by Paul-James White
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Taylor-Wiles type lifting theorems allow one to deduce that for $\rho$ a "sufficiently nice" $l$-adic representation of the absolute Galois group of a number field whose semi-simplified reduction modulo $l$, denoted $\overline{\rho}$, comes from an automorphic representation then so does $\rho$. The recent lifting theorems of Barnet-Lamb-Gee-Geraghty-Taylor impose a technical condition, called \emph{$m$-big}, upon the residual representation $\overline{\rho}$. Snowden-Wiles proved...
Source: http://arxiv.org/abs/1007.0358v2
Arxiv.org
by Evgeny Feigin
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Let $\Fl_\lambda$ be a generalized flag variety of a simple Lie group $G$ embedded into the projectivization of an irreducible $G$-module $V_\lambda$. We define a flat degeneration $\Fl_\lambda^a$, which is a ${\mathbb G}^M_a$ variety. Moreover, there exists a larger group $G^a$ acting on $\Fl_\lambda^a$, which is a degeneration of the group $G$. The group $G^a$ contains ${\mathbb G}^M_a$ as a normal subgroup. If $G$ is of type $A$, then the degenerate flag varieties can be embedded into the...
Source: http://arxiv.org/abs/1007.0646v2
Arxiv.org
by S. S. Avancini; C. C. Barros Jr.; D. P. Menezes; C. Providência
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The effects of the $\alpha$ particles in nuclear matter at low densities are investigated within three different parametrizations of relativistic models at finite temperature. Both homogeneous and inhomogeneous matter (pasta phase) are described for neutral nuclear matter with fixed proton fractions and stellar matter subject to $\beta$-equilibrium and trapped neutrinos. In homogeneous matter, $\alpha$ particles are only present at densities below 0.02 fm$^{-3}$ and their presence decreases...
Source: http://arxiv.org/abs/1007.2319v1
Arxiv.org
by Taiichi Yamada; Yasuro Funaki
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The structure of $3/2^{-}$ and $1/2^{+}$ states in $^{11}$B is investigated with an $\alpha+\alpha+t$ orthogonality condition model (OCM) based on the Gaussian expansion method. Full levels up to the $3/2^{-}_{3}$ and $1/2^{+}_2$ states around the $\alpha+\alpha+t$ threshold ($E_x$=11.1 MeV) are reproduced consistently with the experimental energy levels. It is shown that the $3/2_{3}^{-}$ state located around the $^{7}$Li+$\alpha$ threshold has an $\alpha+\alpha+t$ cluster structure, whereas...
Source: http://arxiv.org/abs/1007.4125v1
Arxiv.org
by H. L. Crawford; R. V. F. Janssens; P. F. Mantica; J. S. Berryman; R. Broda; M. P. Carpenter; N. Cieplicka; B. Fornal; G. F. Grinyer; N. Hoteling; B. P. Kay; T. Lauritsen; K. Minamisono; I. Stefanescu; J. B. Stoker; W. B. Walters; S. Zhu
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The isomeric and $\beta$-decay properties of neutron-rich $^{53-57}$Sc and $^{53,54}$Ca nuclei near neutron number $N$=32 are reported, and the low-energy level schemes of $^{53,54,56}$Sc and $^{53-57}$Ti are presented. The low-energy level structures of the $_{21}$Sc isotopes are discussed in terms of the coupling of the valence $1f_{7/2}$ proton to states in the corresponding $_{20}$Ca cores. Implications with respect to the robustness of the $N$=32 subshell closure are discussed, as well as...
Source: http://arxiv.org/abs/1007.0032v1
Arxiv.org
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A chiral constituent quark model approach, embodying s- and u-channel exchanges,complemented with a Reggeized treatment for t-channel is presented. A model is obtained allowing data for $\pi^- p \to \eta n$ and $\gamma p \to \eta p$ to be describe satisfactorily. For the latter reaction, recently released data by CLAS and CBELSA/TAPS Collaborations in the system total energy range $1.6 \lesssim W \lesssim 2.8$ GeV are well reproduced due to the inclusion of Reggeized trajectories instead of...
Source: http://arxiv.org/abs/1005.2797v2
Arxiv.org
by Andrzej Borowiec; Anna Pachoł
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Some classes of Deformed Special Relativity (DSR) theories are reconsidered within the Hopf algebraic formulation. For this purpose we shall explore a minimal framework of deformed Weyl-Heisenberg algebras provided by a smash product construction of DSR algebra. It is proved that this DSR algebra, which uniquely unifies $\kappa$-Minkowski spacetime coordinates with Poincar\'e generators, can be obtained by nonlinear change of generators from undeformed one. Its various realizations in terms of...
Source: http://arxiv.org/abs/1005.4429v2
Arxiv.org
by Yidong Sun; Jujuan Zhuang
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Recently, by the Riordan's identity related to tree enumerations, \begin{eqnarray*} \sum_{k=0}^{n}\binom{n}{k}(k+1)!(n+1)^{n-k} &=& (n+1)^{n+1}, \end{eqnarray*} Sun and Xu derived another analogous one, \begin{eqnarray*} \sum_{k=0}^{n}\binom{n}{k}D_{k+1}(n+1)^{n-k} &=& n^{n+1}, \end{eqnarray*} where $D_{k}$ is the number of permutations with no fixed points on $\{1,2,\dots, k\}$. In the paper, we utilize the $\lambda$-factorials of $n$, defined by Eriksen, Freij and...
Source: http://arxiv.org/abs/1007.1339v1
Deb Cotton Secondline Collection
movies

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2:30 mark: 'Can't Be Faded' - original tune by the Stooges Brass Band and the Family Ties Club parade theme Source: https://www.youtube.com/watch?v=Tw5xGJorpeM Uploader: BigRedCotton Upload date: 20101005
Topics: Youtube, video, Music, Second Line Parade, New Orleans, Stooges Brass Band, debcotton,...
Source: https://www.youtube.com/watch?v=gD5v17tYrmY Uploader: BigRedCotton Upload date: 20100504
Topics: Youtube, video, Entertainment, Treme, Tuba Fats, New Orleans, Mardi Gras Indians, Indian Red,...
Arxiv.org
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Recently, several authors studied small quantum systems weakly coupled to free boson or fermion fields at positive temperature. All the approaches we are aware of employ complex deformations of Liouvillians or Mourre theory (the infinitesimal version of the former). We present an approach based on polymer expansions of statistical mechanics. Despite the fact that our approach is elementary, our results are slightly sharper than those contained in the literature up to now. We show that, whenever...
Source: http://arxiv.org/abs/1005.1080v3
Arxiv.org
by M. Dugic; J. Jeknic-Dugic
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Recently, we pointed out the possible inconsistency in the very foundations of the Everett MWI (or a Multiverse) theory. Here, we place some emphasis on the very basic notions underlying our conclusion yet motivated by certain, recently raised clever observations in this regard.
Source: http://arxiv.org/abs/1007.4321v1
Source: https://www.youtube.com/watch?v=c8QeVE5j-J4 Uploader: BigRedCotton Upload date: 20101005
Topics: Youtube, video, Entertainment, Second Line Parade, New Orleans, Stooges Brass Band, debcotton,...
Arxiv.org
by Frédéric Gourdeau; Niels Grønbæk; Michael C. White
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Let $S$ be a Rees semigroup, and let $\ell^1(S)$ be its convolution semigroup algebra. Using Morita equivalence we show that bounded Hochschild homology and cohomology of $\ell^1(S)$ is isomorphic to those of the underlying discrete group algebra.
Source: http://arxiv.org/abs/1007.4475v1
Arxiv.org
by Andrey Chaves; F. M. Peeters; G. A. Farias; M. Milošević
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The vortex-vortex interaction potential in bulk superconductors is calculated within the Ginzburg-Landau (GL) theory and is obtained from a numerical solution of a set of two coupled non-linear GL differential equations for the vector potential and the superconducting order parameter, where the merger of vortices into a giant vortex is allowed. Further, the interaction potentials between a vortex and a giant vortex and between a vortex and an antivortex are obtained for both type-I and type-II...
Source: http://arxiv.org/abs/1005.4630v1
Arxiv.org
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In secure multi-party computation $n$ parties jointly evaluate an $n$-variate function $f$ in the presence of an adversary which can corrupt up till $t$ parties. Almost all the works that have appeared in the literature so far assume the presence of authenticated channels between the parties. This assumption is far from realistic. Two directions of research have been borne from relaxing this (strong) assumption: (a) The adversary is virtually omnipotent and can control all the communication...
Source: http://arxiv.org/abs/1005.5020v1
Arxiv.org
by Andrea Rey; Andrea Solotar
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Let $a$ and $b$ be two integers such that $2\le a
Source: http://arxiv.org/abs/1007.3426v1
Arxiv.org
by Ali Tajer; Xiaodong Wang
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We analyze the gains of opportunistic communication in multiuser interference channels. Consider a fully connected $n$-user Gaussian interference channel. At each time instance only $K\leq n$ transmitters are allowed to be communicating with their respective receivers and the remaining $(n-K)$ transmitter-receiver pairs remain inactive. For finite $n$, if the transmitters can acquire channel state information (CSI) and if all channel gains are bounded away from zero and infinity, the seminal...
Source: http://arxiv.org/abs/1007.3676v1
Arxiv.org
by R. Jagannathan; R. Sridhar
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A (p,q)-analogue of the classical Rogers-Szego polynomial is defined by replacing the q-binomial coefficient in it by the (p,q)-binomial coefficient. Exactly like the Rogers-Szego polynomial is associated with the q-oscillator algebra it is found that the (p,q)-Rogers-Szego polynomial is associated with the (p,q)-oscillator algebra.
Source: http://arxiv.org/abs/1005.4309v1
Arxiv.org
by Michel Deza; Mathieu Dutour Sikiric
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We consider here 6-regular plane graphs whose faces have size 1, 2 or 3. In Section 2 a practical enumeration method is given that allowed us to enumerate them up to 53 vertices. Subsequently, in Section 3 we enumerate all possible symmetry groups of the spheres that showed up. In Section 4 we introduce a new Goldberg-Coxeter construction that takes a 6-regular plane graph G0, two integers k and l and returns two 6-regular plane graphs. Then in the final section, we consider the notions of...
Source: http://arxiv.org/abs/1007.4706v1
Arxiv.org
by M. Aliev; H. Lacker; U. Langenfeld; S. Moch; P. Uwer; M. Wiedermann
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We present a program to calculate the total cross section for top-quark pair production in hadronic collisions. The program takes into account recent theoretical developments such as approximate next-to-next-to-leading order perturbative QCD corrections and it allows for studies of the theoretical uncertainty by separate variations of the factorization and renormalization scales. In addition it offers the possibility to obtain the cross section as a function of the running top-quark mass. The...
Source: http://arxiv.org/abs/1007.1327v1
Arxiv.org
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We study the hierarchy of the coefficients in the 1/Nc expansion for the negative parity L=1 excited baryons from the perspective of the constituent quark model. This is related to the problem of determining the spin-flavor structure of the quark interaction. The most general two-body scalar interaction between quarks contains the spin-flavor structures $t_1^a t_2^a, \vec s_1\cdot \vec s_2$ and $ \vec s_1\cdot \vec s_2 t_1^a t_2^a$. We show that in the limit of a zero range interaction all...
Source: http://arxiv.org/abs/1007.0964v1
Arxiv.org
by Samrat Bhowmick; S. Kalyana Rama
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We assume that the early universe is homogeneous, anisotropic, and is dominated by the mutually BPS 22'55' intersecting branes of M theory. The spatial directions are all taken to be toroidal. Using analytical and numerical methods, we study the evolution of such an universe. We find that, asymptotically, three spatial directions expand to infinity and the remaining spatial directions reach stabilised values. Any stabilised values can be obtained by a fine tuning of initial brane densities. We...
Source: http://arxiv.org/abs/1007.0205v3
Arxiv.org
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Recent measurements performed with some direct dark matter detection experiments, e.g. CDMS-II and CoGENT (after DAMA/LIBRA), have unveiled a few events compatible with weakly interacting massive particles. The preferred mass range is around 10 GeV, with a quite large spin-independent cross section of $10^{-43}$-$10^{-41}\,{\rm cm^2}$. In this paper, we recall that a light dark matter particle with dominant couplings to quarks should also generate cosmic-ray antiprotons. Taking advantage of...
Source: http://arxiv.org/abs/1007.5253v2
Arxiv.org
by M. Boquien; D. Calzetti; C. Kramer; E. M. Xilouris; F. Bertoldi; J. Braine; C. Buchbender; F. Combes; F. Israel; B. Koribalski; S. Lord; G. Quintana-Lacaci; M. Relaño; M. Röllig; G. Stacey; F. S. Tabatabaei; R. P. J. Tilanus; F. van der Tak; P. van der Werf; S. Verley
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Over the past few years several studies have provided estimates of the SFR (star-formation rate) or the total infrared luminosity from just one infrared band. However these relations are generally derived for entire galaxies, which are known to contain a large scale diffuse emission that is not necessarily related to the latest star-formation episode. We provide new relations to estimate the SFR from resolved star-forming regions at 100 mum and 160 mum. We select individual star-forming regions...
Source: http://arxiv.org/abs/1005.2182v1
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by V. R. Miller; M. D. Albrow; C. Afonso; Th. Henning
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We have conducted a deep photometric survey of a 0.5 deg x 0.5 deg area of the Galactic Plane using the WFI instrument on the 2.2-m ESO telescope on La Silla, Chile. The dataset comprises a total of 267 R-band images, 204 from a 16 day observation run in 2005, supplemented by 63 images from a six week period in 2002. Our reduction employed the new numerical kernel difference image analysis method as implemented in the PYSIS3 code and resulted in more than 500,000 lightcurves of stars down to a...
Source: http://arxiv.org/abs/1007.2684v1
Arxiv.org
by Plamen Djakov; Boris Mityagin
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For 1D Dirac operators Ly= i J y' + v y, where J is a diagonal 2x2 matrix with entrees 1,-1 and v(x) is an off-diagonal matrix with L^2 [0,\pi]-entrees P(x), Q(x) we characterize the class X of pi-periodic potentials v such that: (i) the smoothness of potentials v is determined only by the rate of decay of related spectral gaps gamma (n) = | \lambda (n,+) - \lambda (n,-)|, where \lambda (..) are the eigenvalues of L=L(v) considered on [0,\pi] with periodic (for even n) or antiperiodic (for odd...
Source: http://arxiv.org/abs/1007.3234v1
Arxiv.org
by Fang Huang; Shao-Han Chen; Wei Chen; Zhu-Jun Zheng
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In this paper, we develop 2-dimensional algebraic theory which closely follows the classical theory of modules. The main results are giving definitions of 2-module and the representation of 2-ring. Moreover, for a 2-ring $\cR$, we prove that its modules form a 2-Abelian category.
Source: http://arxiv.org/abs/1005.2831v2
Topic: music
6th Western Hazard Tree Workshop field trip. Southwest Oregon. From the 6th Western Hazard Tree Workshop agenda, located here: www.fs.fed.us/foresthealth/technology/htwc/2010/agenda.htm All-Day Field Trip along Hwy 140 1) Oak Problems, 2) Specimen Trees: World’s Largest White Pine, and 3) Fir Problems at Lake of the Woods Resort, Summer-homes, and Campgrounds – Ellen & Don Goheen, Katy Mallams, Kris Chadwick, Everett Hansen, and Alan Kanaskie. Proceedings from the 6th Western Hazard...
Topics: r6, usda, stateandprivateforestry, medford, decay, region6, kristenchadwick, usfs, forestservice,...
6th Western Hazard Tree Workshop field trip. Southwest, Oregon. From the 6th Western Hazard Tree Workshop agenda, located here: www.fs.fed.us/foresthealth/technology/htwc/2010/agenda.htm All-Day Field Trip along Hwy 140 1) Oak Problems, 2) Specimen Trees: World’s Largest White Pine, and 3) Fir Problems at Lake of the Woods Resort, Summer-homes, and Campgrounds – Ellen & Don Goheen, Katy Mallams, Kris Chadwick, Everett Hansen, and Alan Kanaskie. Proceedings from the 6th Western Hazard...
Topics: r6, usda, stateandprivateforestry, medford, decay, region6, kristenchadwick, usfs, forestservice,...
An entomologist photo shoot. Malheur National Forest, Oregon. Photo by: Unknown Date: July 27, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. For an Oregon Public Broadcasting (OPB) news segment covering this outbreak, see: www.pbs.org/newshour/show/in-oregon-swarms-of-pine-butter... Image provided by USDA Forest Service, Region 6, State and Private...
Topics: foresthealthprotection, usda, brucehostetler, stateandprivateforestry, malheurnationalforest,...
Andy Eglitis. FHP Insect and Disease training for BLM employees in southwest Oregon. Photo by: Kristen Chadwick Date: May 24, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: training, usda, stateandprivateforestry, instruction, r6, region6, forestpathologist,...
Angel Saavedra (left) and Charles Shaw at the 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from this conference see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 6, 2010 More of Kristen's photos are located here: www.flickr.com/photos/armillaria01/albums/72157594151075963 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Service...
Topics: angelsaavedra, Forest Pathology, foresthealthprotection, kristenchadwick, usda,...
Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank: Field Studies Agree and Extend the Results of Greenhouse Trials for Host Resistance of Douglas-fir to Infection by Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC work conferences see:...
Topics: r6, usda, stateandprivateforestry, region6, forestpathologist, kristenchadwick, usfs, growthrings,...
Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank: Field Studies Agree and Extend the Results of Greenhouse Trials for Host Resistance of Douglas-fir to Infection by Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC work conferences see:...
Topics: r6, usda, stateandprivateforestry, mikecruikshank, treering, region6, kristenchadwick,...
Armillaria ostoyae lesions on Douglas-fir. Presentation by Mike Cruikshank: Field Studies Agree and Extend the Results of Greenhouse Trials for Host Resistance of Douglas-fir to Infection by Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from this work conference see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 7, 2010 More of Kristen's photos are located here:...
Topics: r6, usda, stateandprivateforestry, region6, usfs, kristenchadwick, mikecruickshank, forestservice,...
Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference (WIFDWC), held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC work conferences see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 7, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection,...
Topics: r6, usda, stateandprivateforestry, treepathogen, region6, forestpathologist, kristenchadwick, usfs,...
Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference (WIFDWC), held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC work conferences see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 7, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection,...
Topics: r6, usda, stateandprivateforestry, region6, forestpathologist, kristenchadwick, usfs,...
Armillaria ostoyae. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from this conference see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 7, 2010 More of Kristen's photos are located here: www.flickr.com/photos/armillaria01/albums/72157594151075963 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Service Center. Kristen Chadwick...
Topics: forestpathogen, foresthealthprotection, kristenchadwick, usda, bc, stateandprivateforestry,...
Back L-R: Holly Kearns, Gregg DeNitto, Angel Saavedra, Bill Jacobi, Rona Sturrock, Anne Marie Casper, Von Helmuth, Kennedy Boateng, David Rusch, Chris Hansen Front L-R: Mike McWilliams, Jonas Rönnberg, Greg Filip, Michelle Cleary, Duncan Morrison, Deanna Danskin, Geral McDonald, Simon Shamoun. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see:...
Topics: deannadanskin, michellecleary, r6, simonshamoun, usda, anee, stateandprivateforestry,...
Back L-R: Harry Kope, Stefan Zeglen, Terry Shaw, Lori Winton, Megan Dudley, Michael Murray, Alan Kanaskie, Alex Woods, Lindsey Myers. Front L-R: Ned Klopfenstein, Mary Lou Fairweather, Pete Angwin, Erin Havard, Rich Hunt, Richard Reich, Dave Shaw. 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from...
Topics: westerninternationalforestdiseseworkconference, r6, usda, stateandprivateforestry, stefanzeglen,...
Back L-R: James Walla, John-Erich Haight, Will Littke, Chris Konchalski, Kevin Buxton, Ellen Goheen, Don Goheen, Mike Cruickshank Front L-R: Jim Blodgett, Bruce Moltzan, Kathleen McKeever, Simren Brar, Kim Camilli, Blakey Lockman, Robin Mulvey, Heather MacLennan, Norma Stromberg-Jones, Stephanie Beauseigl 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see:...
Topics: r6, usda, stateandprivateforestry, robinmulvey, normastrombergjones, blakeylockman, region6,...
Back L-R: Phil Cannon, John Hanna, John Browning, Bart van der Kamp, Adriana van der Kamp, Dan Omdal, John Schwandt Front L-R: Mike McWilliams, Kristen Chadwick, John King, Bob Edmunds, Walt Thies, Gail Thies, Nancy Gillette, Bro Kinloch 58th Annual Western International Forest Disease Work Conference, held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC...
Topics: canada, foresthealthprotection, westerninternationalforestdiseaseworkconference, usda, bc,...
Balsam woolly adelgid damage in subalpine fir. High elevation five-needle pines (High Five) symposium field trip. Montana Snowbowl ski area, Missoula, Montana. Photo by: Kristen Chadwick Date: June 30, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. "High elevation five-needle pines are rapidly declining throughout North America. The...
Topics: westsideservicecenter, westsideforestinsectanddiseaseservicecenter, foresthealthprotection,...
Balsam woolly adelgid damage. High elevation five-needle pines (High Five) symposium field trip. Montana Snowbowl ski area, Missoula, Montana. Photo by: Kristen Chadwick Date: June 30, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. "High elevation five-needle pines are rapidly declining throughout North America. The six species,...
Topics: westsideservicecenter, westsideforestinsectanddiseaseservicecenter, foresthealthprotection,...
Balsam woolly adelgid damage. High elevation five-needle pines (High Five) symposium field trip. Montana Snowbowl ski area, Missoula, Montana. Photo by: Kristen Chadwick Date: June 30, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. "High elevation five-needle pines are rapidly declining throughout North America. The six species,...
Topics: westsideservicecenter, westsideforestinsectanddiseaseservicecenter, foresthealthprotection,...
Balsam woolly adelgid in subalpine fir. High elevation five-needle pines (High Five) symposium field trip. Montana Snowbowl ski area, Missoula, Montana. Photo by: Kristen Chadwick Date: June 30, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. "High elevation five-needle pines are rapidly declining throughout North America. The six...
Topics: westsideservicecenter, westsideforestinsectanddiseaseservicecenter, foresthealthprotection,...
Barlow Road Tollgate Maples marker along Highway 26. Zigzag Ranger District, Mt. Hood National Forest, Oregon. Inscription reads: "Heritage Tree Program Barlow Road Tollgate Maples Acer macrophyllum These two bigleaf maple trees, on on each side of the replica tollgate, are believed to have been planted by Daniel Parker who was the tollgate keeper here from 1883 to 1902. The Barlow Road is a branch of the Oregon National Historic Trail and was opened as a toll road in 1846 by Sam Barlow...
Topics: disease, r6, usda, stateandprivateforestry, zigzagrangerdistrict, tree, heritagetree, highway26,...
Bob Rock visiting the Regional Office. Portland, Oregon. Photo by: Julie Johnson Date: September 29, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Aerial Survey Program collection. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: foresthealthprotection, usda, stateandprivateforestry, regionaloffice,...
British Columbia Parks Ranger speaking to the group. 58th Annual Western International Forest Disease Work Conference (WIFDWC), held October 4-8, 2010 in Valemount, BC. For proceedings from the 2010 WIFDWC work conference see: irp-cdn.multiscreensite.com/1463fd0a/files/uploaded/WIFDW... For proceedings from other WIFDWC work conferences see: www.wifdwc.org/past-proceedings1 Photo by: Kristen Chadwick Date: October 6, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry,...
Topics: r6, usda, stateandprivateforestry, region6, britishcolumbiaparks, kristenchadwick,...
Celebrating Doug Daoust. Regional Office, Portland, Oregon. Photo by: Unknown Date: February 23, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Julie Johnson collection. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: dougdaoust, foresthealthprotection, usda, stateandprivateforestry, regionaloffice, oregon, usfs,...
Chris Jensen (Deschutes National Forest) helps install Mt. Hood whitebark pine trial. Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: October 18, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: r6, usda, seedling, stateandprivateforestry, trial, region6, mthoodnationalforest, kristenchadwick,...
Chris Jensen (Deschutes National Forest) helps install a Mt. Hood whitebark pine seedling trial. Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: October 20, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: r6, usda, seedling, stateandprivateforestry, trial, region6, mthoodnationalforest, kristenchadwick,...
Chris Jensen (Deschutes National Forest) helps install a Mt. Hood whitebark pine seedling trial. Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: October 20, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: r6, usda, seedling, stateandprivateforestry, trial, region6, mthoodnationalforest, kristenchadwick,...
Chris Jensen (Deschutes National Forest) helps install a whitebark pine seedling trial. Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: October 20, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: r6, mthoodnationalforest, stateandprivateforestry, mthood, foresthealth, region6, usda,...
Clark's nutcracker in whitebark pine. Mt. Hood; Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: September 15, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: r6, usda, stateandprivateforestry, mthood, clarksnutcracker, foresthealth, region6,...
Clark's nutcracker in whitebark pine. Mt. Hood; Mt. Hood National Forest, Oregon. Photo by: Kristen Chadwick Date: September 15, 2010 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: r6, usda, stateandprivateforestry, mthood, clarksnutcracker, foresthealth, region6,...
Cloud Cap Inn and Mt. Hood. Oregon. Photo by: Kristen Chadwick Date: September 3, 2010 More of Kristen's photos are located here: www.flickr.com/photos/armillaria01/albums/72157594151075963 Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Service Center. Kristen Chadwick collection. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: foresthealthprotection, kristenchadwick, usda, cloudcapinn, stateandprivateforestry, oregon, usfs,...
Decayed main stem (right) of a Tollgate Maple threatening Highway 26. Zigzag Ranger District, Mt. Hood National Forest, Oregon. This decayed main stem was removed in 2011. See the Forest Service press release here: www.mounthoodnationalpark.org/MHNPArticles/110717Tollgate... "July 14, 2011 Barlow Road Tollgate Heritage Maple Tree Succumbs to Old Age Sandy, OR- A 130-year-old bigleaf maple, which marks the spot of the western-most tollgate of the historic Barlow Road, has substantial decay...
Topics: disease, r6, usda, stateandprivateforestry, zigzagrangerdistrict, tree, heritagetree, highway26,...
Decayed main stem of the Tollgate Maple threatening Highway 26. Zigzag Ranger District, Mt. Hood National Forest, Oregon. This decayed main stem was removed in 2011. See the Forest Service press release here: www.mounthoodnationalpark.org/MHNPArticles/110717Tollgate... "July 14, 2011 Barlow Road Tollgate Heritage Maple Tree Succumbs to Old Age Sandy, OR- A 130-year-old bigleaf maple, which marks the spot of the western-most tollgate of the historic Barlow Road, has substantial decay and...
Topics: disease, r6, usda, stateandprivateforestry, zigzagrangerdistrict, tree, heritagetree, highway26,...
Don Goheen conducting FHP Insect and Disease training for BLM employees in southwest Oregon. Photo by: Kristen Chadwick Date: May 26, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: training, usda, stateandprivateforestry, instruction, r6, region6, forestpathologist,...
Don Goheen conducting FHP Insect and Disease training for BLM employees in southwest Oregon. Photo by: Kristen Chadwick Date: May 24, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Westside Forest Insect and Disease Service Center. Source: Kristen Chadwick collection; Sandy, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
Topics: training, usda, stateandprivateforestry, instruction, r6, region6, forestpathologist,...
Don Goheen speaking at the 6th Western Hazard Tree Workshop field trip. Southwest Oregon. From the 6th Western Hazard Tree Workshop agenda, located here: www.fs.fed.us/foresthealth/technology/htwc/2010/agenda.htm All-Day Field Trip along Hwy 140 1) Oak Problems, 2) Specimen Trees: World’s Largest White Pine, and 3) Fir Problems at Lake of the Woods Resort, Summer-homes, and Campgrounds – Ellen & Don Goheen, Katy Mallams, Kris Chadwick, Everett Hansen, and Alan Kanaskie. Proceedings from...
Topics: r6, usda, stateandprivateforestry, medford, region6, forestpathologist, kristenchadwick, usfs,...
Don Goheen speaking at the 6th Western Hazard Tree Workshop field trip. Southwest Oregon. From the 6th Western Hazard Tree Workshop agenda, located here: www.fs.fed.us/foresthealth/technology/htwc/2010/agenda.htm All-Day Field Trip along Hwy 140 1) Oak Problems, 2) Specimen Trees: World’s Largest White Pine, and 3) Fir Problems at Lake of the Woods Resort, Summer-homes, and Campgrounds – Ellen & Don Goheen, Katy Mallams, Kris Chadwick, Everett Hansen, and Alan Kanaskie. Proceedings from...
Topics: r6, usda, stateandprivateforestry, medford, region6, forestpathologist, kristenchadwick, usfs,...
Don Goheen speaking at the 6th Western Hazard Tree Workshop field trip. Southwest Oregon. From the 6th Western Hazard Tree Workshop agenda, located here: www.fs.fed.us/foresthealth/technology/htwc/2010/agenda.htm All-Day Field Trip along Hwy 140 1) Oak Problems, 2) Specimen Trees: World’s Largest White Pine, and 3) Fir Problems at Lake of the Woods Resort, Summer-homes, and Campgrounds – Ellen & Don Goheen, Katy Mallams, Kris Chadwick, Everett Hansen, and Alan Kanaskie. Proceedings from...
Topics: r6, usda, stateandprivateforestry, medford, region6, forestpathologist, kristenchadwick, usfs,...
Don Scott (2nd from right) forest entomologist with the Blue Mountains Forest Insect and Disease Service Center leads a pine butterfly field trip. Eastern Oregon. Photo by: Unknown Date: August 25, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. For an Oregon Public Broadcasting (OPB) news segment covering this outbreak, see:...
Topics: defoliation, training, usda, stateandprivateforestry, r6, foresthealth, Blue Mountains Service...
Don Scott (center, white shirt, facing tree) forest entomologist with the Blue Mountains Forest Insect and Disease Service Center leads a pine butterfly field trip. Eastern Oregon. Note the pine butterflies in flight. Photo by: Unknown Date: August 25, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. For an Oregon Public Broadcasting (OPB) news segment...
Topics: defoliation, r6, usda, stateandprivateforestry, foresthealth, Blue Mountains Service Center,...
Don Scott (right) forest entomologist with the Blue Mountains Forest Insect and Disease Service Center leads a pine butterfly field trip. Eastern Oregon. Photo by: Unknown Date: August 25, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. For an Oregon Public Broadcasting (OPB) news segment covering this outbreak, see:...
Topics: defoliation, training, usda, stateandprivateforestry, r6, foresthealth, Blue Mountains Service...
Douglas-fir tussock moth diet. DFTM eggs were reared to determine the naturally occurring levels of virus and parasitism. Olympia, Washington. Photo by: Unknown Date: March 18, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: defoliation, washingtonstatedepartmentofnaturalresources, r6, usda, stateandprivateforestry,...
Douglas-fir tussock moth eggs and diet; eggs were reared to determine natural levels of virus and parasitism. Olympia, Washington. Photo by: Unknown Date: March 18, 2010 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Source: Forest Health Protection digital file collection; Regional Office, Portland, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: defoliation, washingtonstatedepartmentofnaturalresources, r6, usda, petridish,...