Radiant heat source, vacuum bag, provide portable bonding oven

Portable bonding oven is formed to any desired size or configuration to attach doublers and brackets to the surfaces of large structures. A radiant heat source is used in combination with a heat resistant transport vacuum bag and a black heat absorbing cloth

Cyclopyxis acmodonta n. sp. and Arcella formosa n. sp.: Two New Species of Testate Rhizopods (Arcellinida, Protozoa) from Remnant Wetlands in Ontario, Canada

Species of the testate rhizopod genera Arcella and Cyclopyxis are found predominantly in the benthos of shallow ponds, forest pools, marshes and other freshwater habitats. Their taxonomy is based on the morphology of their tests — the shell-like structure that houses the living single-celled amoeboid protoplast. This paper describes a new species of Cyclopyxis discovered in two coniferous forest bogs, and a new species of Arcella from a Typha-dominated marsh on the north shore of Lake Ontario, Canada. Cyclopyxis acmodonta Nicholls n. sp. differs from its closest relative C. stellata (Wailes) Deflandre 1929 in its much smaller size and its irregularly shaped pseudostomal aperture, which is embellished with numerous, tiny, sharp-pointed toothlike quartz granules around the interior margin. Although the saucer-like indentations over the dorsal surface of the test of A. formosa Nicholls, Meisterfeld & Török n. sp. resemble similar structures found in several other Arcella species, the large size of A. formosa (165-235 mm in diameter) and its low profile (low height-to-diameter ratio) are the main features distinguishing this new species from other Arcella species

Post-War developments in the marketing of butter

In spite of the many important changes which have taken place in the marketing of manufactured dairy products since the World War, no analysis which takes adequate account of these changes is yet available. While post-war text books on agricultural marketing have treated the marketing of manufactured dairy products in a very broad manner, their major emphasis has been on cooperation, with almost complete oversight of the marked and increasing importance of very large private business units in the distribution of the several dairy products and the changes in marketing channels under way. It is the aim of this study to attempt partially to fill this gap by a reconsideration of the marketing of butter with special attention to changes in its channels of distribution, concentration in the butter industry, and the various supplementary and complementary relationships involved in the recent increased diversification of dairy products distributed

Post-War developments in the marketing of cheese

The 20 years following the World War have seen marked changes in the marketing of manufactured dairy products. Because of this fact, most of the literature on the marketing of such products, based largely on conditions before 1918 or 1920, is now out of date. In recognition of this gap in our present marketing picture, the writer recently published a discussion of the developments of the post-war years in butter marketing2 with special emphasis on the increasing importance of large business units as they relate to marketing channels. This bulletin is a similar undertaking with regard to cheese. The aim is to trace the development of concentration in the cheese industry since the War, the changes which this has brought about in marketing channels, and the primary forces responsible for these developments. It is also hoped that this bulletin will serve as a foundation for a more intensive and thorough study of monopoly elements in the cheese industry

A method for observing gas evolution during plastic laminate cure

Polyimide, phenolic, and other resins which develop volatiles during laminating or molding cure are studied using optimum cure cycles. The specimen is placed on a platen and sealed in a plastic bag, then heated and observed for gas evolution using a binocular microscope. A cover plate is added to sumulate an autoclave

Two phase detonation studies

An experimental study of the passage of a shock wave over a burning fuel drop is described. This includes high speed framing photographs of the interaction taken at 500,000 frames per second. A theoretical prediction of the ignition of a fuel drop by a shock wave is presented and the results compared with earlier experimental work. Experimental attempts to generate a detonation in a liquid fuel drop (kerosene)-liquid oxidizer drop (hydrogen peroxide)-inert gas-environment are described. An appendix is included which gives the analytical prediction of power requirements for the drop generator to produce certain size drops at a certain mass rate. A bibliography is also included which lists all of the publications resulting from this research grant

Genome-wide and Mendelian randomisation studies of liver MRI yield insights into the pathogenesis of steatohepatitis

Background A non-invasive method to grade the severity of steatohepatitis and liver fibrosis is magnetic resonance imaging (MRI) based corrected T1 (cT1). We aimed to identify genetic variants influencing liver cT1 and use genetics to understand mechanisms underlying liver fibroinflammatory disease and its link with other metabolic traits and diseases. Methods First, we performed a genome-wide association study (GWAS) in 14,440 Europeans in UK Biobank with liver cT1 measures. Second, we explored the effects of the cT1 variants on liver blood tests, and a range of metabolic traits and diseases. Third, we used Mendelian randomisation to test the causal effects of 24 predominantly metabolic traits on liver cT1 measures. Results We identified six independent genetic variants associated with liver cT1 that reached GWAS significance threshold (p<5x10-8). Four of the variants (rs75935921 in SLC30A10, rs13107325 in SLC39A8, rs58542926 in TM6SF2, rs738409 in PNPLA3) were also associated with elevated transaminases and had variable effects on liver fat and other metabolic traits. Insulin resistance, type 2 diabetes, non-alcoholic fatty liver and BMI were causally associated with elevated cT1 whilst favourable adiposity (instrumented by variants associated with higher adiposity but lower risk of cardiometabolic disease and lower liver fat) was found to be protective. Conclusion The association between two metal ion transporters and cT1 indicates an important new mechanism in steatohepatitis. Future studies are needed to determine whether interventions targeting the identified transporters might prevent liver disease in at risk individuals

Machine learning -- based diffractive imaging with subwavelength resolution

Far-field characterization of small objects is severely constrained by the diffraction limit. Existing tools achieving sub-diffraction resolution often utilize point-by-point image reconstruction via scanning or labelling. Here, we present a new imaging technique capable of fast and accurate characterization of two-dimensional structures with at least wavelength/25 resolution, based on a single far-field intensity measurement. Experimentally, we realized this technique resolving the smallest-available to us 180-nm-scale features with 532-nm laser light. A comprehensive analysis of machine learning algorithms was performed to gain insight into the learning process and to understand the flow of subwavelength information through the system. Image parameterization, suitable for diffractive configurations and highly tolerant to random noise was developed. The proposed technique can be applied to new characterization tools with high spatial resolution, fast data acquisition, and artificial intelligence, such as high-speed nanoscale metrology and quality control, and can be further developed to high-resolution spectroscop