Nondestructive testing techniques used in analysis of honeycomb structure bond strength

DOT /Driver-Displacement Oriented Transducer/, applicable to both lap shear type application and honeycomb sandwich structures, measures the displacement of the honeycomb composite face sheet. It incorporates an electromagnetic driver and a displacement measuring system into a single unit to provide noncontact bond strength measurements

Preliminary Note on the Sterilization of Seeds of the Leguminosae with Hydrogen Peroxide

In the scientific study of many bacteriological problems it is necessary to deal with pure cultures of the organism with which the worker is interested. This has been true in our studies on the nodule producing organisms of leguminous plants. Before any morphological or physiological studies are made on these organisms they should be tested on the host plant for their inoculating ability, and in order to do this all possible chances for contamination by other organisms must be eliminated. If, in testing out a certain culture for its inoculating ability on the host plant, the plants were grown under conditions that were not sterile, and certain results were obtained, we would have no right to say that these results were due to the culture used, because they may have been due to contamination from the air, from the soil used, or from using seeds that were not sterile. In our studies on these organisms we have attempted to overcome these difficulties and sources of error, and it is the purpose of this paper to present the results of some preliminary work on the sterilization of seeds of the Leguminosae

Een Centraal Aandeelhoudersregister (CAHR) als betrouwbaar en innovatief opstapje voor digitalisering van aandelen en een betere kapitaalinfrastructuur voor BV’s: Misbruikbestrijding, rechtszekerheid en economische voordelen kunnen wel degelijk hand in hand gaan

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Atomic-scale structure of the SrTiO3(001)-c(6x2) reconstruction: Experiments and first-principles calculations

The c(6x2) is a reconstruction of the SrTiO3(001) surface that is formed between 1050-1100oC in oxidizing annealing conditions. This work proposes a model for the atomic structure for the c(6x2) obtained through a combination of results from transmission electron diffraction, surface x-ray diffraction, direct methods analysis, computational combinational screening, and density functional theory. As it is formed at high temperatures, the surface is complex and can be described as a short-range ordered phase featuring microscopic domains composed of four main structural motifs. Additionally, non-periodic TiO2 units are present on the surface. Simulated scanning tunneling microscopy images based on the electronic structure calculations are consistent with experimental images

Helicobacter hepaticus infection in mice: models for understanding lower bowel inflammation and cancer

Pioneering work in the 1990s first linked a novel microaerobic bacterium, Helicobacter hepaticus, with chronic active hepatitis and inflammatory bowel disease in several murine models. Targeted H. hepaticus infection experiments subsequently demonstrated its ability to induce colitis, colorectal cancer, and extraintestinal diseases in a number of mouse strains with defects in immune function and/or regulation. H. hepaticus is now widely utilized as a model system to dissect how intestinal microbiota interact with the host to produce both inflammatory and tolerogenic responses. This model has been used to make important advances in understanding factors that regulate both acquired and innate immune response within the intestine. Further, it has been an effective tool to help define the function of regulatory T cells, including their ability to directly inhibit the innate inflammatory response to gut microbiota. The complete genomic sequence of H. hepaticus has advanced the identification of several virulence factors and aided in the elucidation of H. hepaticus pathogenesis. Delineating targets of H. hepaticus virulence factors could facilitate novel approaches to treating microbially induced lower bowel inflammatory diseases.National Institutes of Health (U.S.) (grant R01-DK052413)National Institutes of Health (U.S.) (grant P01-CA026731)National Institutes of Health (U.S.) (grant R01-CA067529)National Institutes of Health (U.S.) (grant P30-ES02109)National Institutes of Health (U.S.) (grant R01-A1052267)National Institutes of Health (U.S.) (grantR01-CA108854

Occurrence of the Various Groups of Legume Bacteria in Iowa Soils

For a long time it has been known that the root-nodule bacteria of the Leguminosae differ considerably in their ability to inoculate plants. An outstanding example of this fact was brought to the attention of the early investigators when it was found that soybeans failed to produce nodules in European soils, while many other species of legumes were naturally inoculated. Kirchner (4), the first investigator to inoculate soybeans in Germany, found that it was necessary to use soil from Japan where the soybean was native and naturally inoculated. Since that time many such examples have been recorded. Just recently Gangulee (3), at the Rothamsted Experiment Station, England, has reported that the legume, Crotalaria juncea, was not naturally inoculated in British soils, and could not even be inoculated artificially until soil from India, where the plant is native, was used for that purpose

Gastric outlet obstruction due to adenocarcinoma in a patient with Ataxia-Telangiectasia syndrome: a case report and review of the literature

Background: Ataxia-Telangiectasia syndrome is characterized by progressive cerebellar dysfunction, conjuctival and cutaneous telangiectasias, severe immune deficiencies, premature aging and predisposition to cancer. Clinical and radiographic evaluation for malignancy in ataxia-telangiectasia patients is usually atypical, leading to delays in diagnosis. Case presentation: We report the case of a 20 year old ataxia-telangiectasia patient with gastric adenocarcinoma that presented as complete gastric outlet obstruction. Conclusion: A literature search of adenocarcinoma associated with ataxia-telangiectasia revealed 6 cases. All patients presented with non-specific gastrointestinal complaints suggestive of ulcer disease. Although there was no correlation between immunoglobulin levels and development of gastric adenocarcinoma, the presence of chronic gastritis and intestinal metaplasia seem to lead to the development of gastric adenocarcinoma. One should consider adenocarcinoma in any patient with ataxia-telangiectasia who presents with non-specific gastrointestinal complaints, since this can lead to earlier diagnosis

The Tabby cat locus maps to feline chromosome B1.

The Tabby markings of the domestic cat are unique coat patterns for which no causative candidate gene has been inferred from other mammals. In this study, a genome scan was performed on a large pedigree of cats that segregated for Tabby coat markings, specifically for the Abyssinian (Ta-) and blotched (tbtb) phenotypes. There was linkage between the Tabby locus and eight markers on cat chromosome B1. The most significant linkage was between marker FCA700 and Tabby (Z = 7.56, theta = 0.03). Two additional markers in the region supported linkage, although not with significant LOD scores. Pairwise analysis of the markers supported the published genetic map of the cat, although additional meioses are required to refine the region. The linked markers cover a 17-cM region and flank an evolutionary breakpoint, suggesting that the Tabby gene has a homologue on either human chromosome 4 or 8. Alternatively, Tabby could be a unique locus in cats