218 research outputs found

    Book Review: The Panzer Killers: The Untold Story of a Fighting General and His Spearhead Tank Division’s Charge into the Third Reich

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    Author: Daniel P. Bolger Reviewed by Rev. Dr. Wylie W. Johnson, US Army War College class of 2010 The Panzer Killers follows the story of World War II Major General Maurice Rose, chronicling his humble beginnings through his rise to being a decorated and accomplished Army commander who led by example.https://press.armywarcollege.edu/parameters_bookshelf/1008/thumbnail.jp

    Book Review: Military Dogs of World War II

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    Author: Susan Bulanda Reviewed by Reverend Dr. Wylie W. Johnson, chaplain (retired), US Army War College class of 2010 In total war, the nation calls on everyone to direct all resources toward victory—during World War II, that call extended to man’s best friend. Retired military chaplain Dr. Wylie W. Johnson reviews certified animal behavior consultant Susan Bulanda’s Military Dogs of World War II, a photographic history that highlights the value of dogs to the mission of the US military and reminds readers, as Johnson observes, of “the critical contributions made by every level of the force.”https://press.armywarcollege.edu/parameters_bookshelf/1033/thumbnail.jp

    Book Review: Team America: Patton, MacArthur, Marshall, Eisenhower, and the World They Forged

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    Author: Robert L. O’Connell Reviewed by Rev. Dr. Wylie W. Johnson, US Army War College class of 2010 Although early twentieth-century America’s Army was small, meagerly funded, short on equipment, and rife with other struggles, it saw the rise of great leaders. Team America: Patton, MacArthur, Marshall, Eisenhower, and the World They Forged focuses on four of them. They came from different backgrounds, yet “Together they accounted for 19 stars; together they brought about victory in their generation. Two became Chief of Staff of the Army. One rose to become the US Commander in Chief.”https://press.armywarcollege.edu/parameters_bookshelf/1021/thumbnail.jp

    Book Review: Bloodlands: Europe between Hitler and Stalin

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    Author: Timothy Snyder Reviewed by Rev. Dr. Wylie W. Johnson, US Army War College class of 2010 Covering the rules of Hitler and Stalin between 1933 and 1945, Bloodlands: Europe between Hitler and Stalin, explores three periods of genocide in which “two great ideological powers that worked out their Darwinian fantasies at the expense of peoples they identified by religion, ethnicity, ideology, and location.” In addition to military casualties, 14 million noncombatants died. The reviewer notes, “Bloodlands is an important book for US military leaders of all ranks for two reasons. First, it is a stark warning to professional warriors about the evils perpetrated by military forces unbridled by ethical and religious morality. Second, given the ongoing Ukrainian conflict, one must recognize that the historical roots of today’s conflict are intensely personal to the people of Ukraine.”https://press.armywarcollege.edu/parameters_bookshelf/1016/thumbnail.jp

    Metagenomic analysis of DNA viruses with targeted sequence capture of canine lobular orbital adenomas and normal conjunctiva

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    Our study aims are: (1) to evaluate phenotypically normal canine conjunctival and orbital tissue and tissue from canine lobular orbital adenomas (CLOAs) for the presence of viral genomic material and (2) phylogenetically classify detected DNA viruses to determine if a DNA virus is associated with CLOAs. A total of 31 formalin fixed paraffin embedded CLOA tissue samples, 4 papillomas or sarcoid, and 10 fresh clinically normal conjunctival tissues were included in this study. Genomic DNA was isolated from all samples and sequencing libraries were prepared. The libraries were molecularly indexed and pooled and viral DNA was enriched via targeted sequence capture utilizing ViroCap. The libraries were sequenced on the Illumina HiSeq platform and compared to known viral DNA reference genomes to identify viral DNA. Carnivore parvovirus was identified in 6.4% and 20% of CLOA tissue and normal conjunctival samples, respectively. This study showed that conjunctival tissue from healthy dogs and CLOAs uncommonly harbor DNA viruses, and no DNA virus was associated with these tumors. Further studies are needed to evaluate the etiologic cause of CLOAs

    Cost-effectiveness analysis of 3-D computerized tomography colonography versus optical colonoscopy for imaging symptomatic gastroenterology patients.

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    BACKGROUND: When symptomatic gastroenterology patients have an indication for colonic imaging, clinicians have a choice between optical colonoscopy (OC) and computerized tomography colonography with three-dimensional reconstruction (3-D CTC). 3-D CTC provides a minimally invasive and rapid evaluation of the entire colon, and it can be an efficient modality for diagnosing symptoms. It allows for a more targeted use of OC, which is associated with a higher risk of major adverse events and higher procedural costs. A case can be made for 3-D CTC as a primary test for colonic imaging followed if necessary by targeted therapeutic OC; however, the relative long-term costs and benefits of introducing 3-D CTC as a first-line investigation are unknown. AIM: The aim of this study was to assess the cost effectiveness of 3-D CTC versus OC for colonic imaging of symptomatic gastroenterology patients in the UK NHS. METHODS: We used a Markov model to follow a cohort of 100,000 symptomatic gastroenterology patients, aged 50 years or older, and estimate the expected lifetime outcomes, life years (LYs) and quality-adjusted life years (QALYs), and costs (£, 2010-2011) associated with 3-D CTC and OC. Sensitivity analyses were performed to assess the robustness of the base-case cost-effectiveness results to variation in input parameters and methodological assumptions. RESULTS: 3D-CTC provided a similar number of LYs (7.737 vs 7.739) and QALYs (7.013 vs 7.018) per individual compared with OC, and it was associated with substantially lower mean costs per patient (£467 vs £583), leading to a positive incremental net benefit. After accounting for the overall uncertainty, the probability of 3-D CTC being cost effective was around 60 %, at typical willingness-to-pay values of £20,000-£30,000 per QALY gained. CONCLUSION: 3-D CTC is a cost-saving and cost-effective option for colonic imaging of symptomatic gastroenterology patients compared with OC

    Fano resonances in plasmonic core-shell particles and the Purcell effect

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    Despite a long history, light scattering by particles with size comparable with the light wavelength still unveils surprising optical phenomena, and many of them are related to the Fano effect. Originally described in the context of atomic physics, the Fano resonance in light scattering arises from the interference between a narrow subradiant mode and a spectrally broad radiation line. Here, we present an overview of Fano resonances in coated spherical scatterers within the framework of the Lorenz-Mie theory. We briefly introduce the concept of conventional and unconventional Fano resonances in light scattering. These resonances are associated with the interference between electromagnetic modes excited in the particle with different or the same multipole moment, respectively. In addition, we investigate the modification of the spontaneous-emission rate of an optical emitter at the presence of a plasmonic nanoshell. This modification of decay rate due to electromagnetic environment is referred to as the Purcell effect. We analytically show that the Purcell factor related to a dipole emitter oriented orthogonal or tangential to the spherical surface can exhibit Fano or Lorentzian line shapes in the near field, respectively.Comment: 28 pages, 10 figures; invited book chapter to appear in "Fano Resonances in Optics and Microwaves: Physics and Application", Springer Series in Optical Sciences (2018), edited by E. O. Kamenetskii, A. Sadreev, and A. Miroshnichenk

    Structural Characterization of a Novel Chlamydia pneumoniae Type III Secretion-Associated Protein, Cpn0803

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    Type III secretion (T3S) is an essential virulence factor used by Gram-negative pathogenic bacteria to deliver effector proteins into the host cell to establish and maintain an intracellular infection. Chlamydia is known to use T3S to facilitate invasion of host cells but many proteins in the system remain uncharacterized. The C. trachomatis protein CT584 has previously been implicated in T3S. Thus, we analyzed the CT584 ortholog in C. pneumoniae (Cpn0803) and found that it associates with known T3S proteins including the needle-filament protein (CdsF), the ATPase (CdsN), and the C-ring protein (CdsQ). Using membrane lipid strips, Cpn0803 interacted with phosphatidic acid and phosphatidylinositol, suggesting that Cpn0803 may associate with host cells. Crystallographic analysis revealed a unique structure of Cpn0803 with a hydrophobic pocket buried within the dimerization interface that may be important for binding small molecules. Also, the binding domains on Cpn0803 for CdsN, CdsQ, and CdsF were identified using Pepscan epitope mapping. Collectively, these data suggest that Cpn0803 plays a role in T3S

    Gene discovery in the Apicomplexa as revealed by EST sequencing and assembly of a comparative gene database. Genome Res

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    Large-scale EST sequencing projects for several important parasites within the phylum Apicomplexa were undertaken for the purpose of gene discovery. Included were several parasites of medical importance (Plasmodium falciparum, Toxoplasma gondii) and others of veterinary importance (Eimeria tenella, Sarcocystis neurona, and Neospora caninum). A total of 55,192 ESTs, deposited into dbEST/GenBank, were included in the analyses. The resulting sequences have been clustered into nonredundant gene assemblies and deposited into a relational database that supports a variety of sequence and text searches. This database has been used to compare the gene assemblies using BLAST similarity comparisons to the public protein databases to identify putative genes. Of these new entries, ∼15%-20% represent putative homologs with a conservative cutoff of p < 10 −9 , thus identifying many conserved genes that are likely to share common functions with other well-studied organisms. Gene assemblies were also used to identify strain polymorphisms, examine stage-specific expression, and identify gene families. An interesting class of genes that are confined to members of this phylum and not shared by plants, animals, or fungi, was identified. These genes likely mediate the novel biological features of members of the Apicomplexa and hence offer great potential for biological investigation and as possible therapeutic targets
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