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• Bill George, a dairy and tillage farmer from Co. Laois, will host a farm walk as part of the Growing Organics Monitor Farm Programme.

• The newly-extended range of DIN rail mounted thyristor controllers from Power Products International are designed for controlling heater batteries and air duct heaters in HVAC systems, as well as other commercial and industrial resistive load applications such as electric furnaces.

• Infineon intends for the Prime Block modules to allow for flexibility in configurations as they contain both thyristor and diode switches.

• My design uses the same five-tap logarithmic ladder and the same type of thyratron that SIGSALY used. Instead of SIGSALY’s 20-ms pulsed sampling, I sample the input at the zero-voltage crossings of the AC power.

• The operation of the Mk 6 exploder involved a series of electrical, mechanical, and chemical functions for detonation. On the bronze base of the exploder was an impeller; after the torpedo left the submarine, the flow of water spun the impeller and powered a generator. The generator then supplied electrical energy for the exploder’s circuitry—oriented around a thyratron tube, a voltage regulator tube, and a solenoid.

• Mariathasan, S. et al. Duration and strength of extracellular signal-regulated kinase signals are altered during positive versus negative thymocyte selection. J. Immunol. 167, 4966–4973 (2001).

• Next, the CoNGA graph-versus-graph analysis was used, which calculates a “CoNGA score” for identification of clonotypes residing within overlapping neighbourhoods in GEX and TCR datasets, and combines overlapping clonotypes into “CoNGA clusters”. This was done by the CoNGA run_graph_vs_graph() function, with a minimum size for identified “CoNGA clusters” of 22 clonotypes for the thymocyte dataset, and 8 for the PBMC-derived T cell dataset, constituting at least 0.1% of clonotypes in the dataset.

• Kang HM, Kim SK, Lee JW, Chung NG, Cho B. Efficacy of low dose anti thymocyte globulin on overall survival, relapse rate, and infectious complications following allogeneic peripheral blood stem cell transplantation for leukemia in children. Bone Marrow Transplant. 2021; https://doi.org/10.1038/s41409-020-01121-9.

• Subsequently, the blood samples were used for leukocyte and total thrombocyte counts37 and for differential leukocyte counts, which were based on the counts of 200 leukocytes21.

• A team of scientists from Immanuel Kant Baltic Federal University used Raman spectroscopy to study the thrombocytes of patients with cardiovascular diseases and compared their spectra with those of healthy people. The researchers identified informative areas of the spectra and confirmed that Raman spectroscopy was a promising method allowing one to diagnose the diseases associated with changes in thrombocyte activity and also to forecast the efficiency of antithrombotic therapy.

• Jagadeeswaran, P., Lin, S., Weinstein, B., Hutson, A. & Kim, S. Loss of GATA1 and gain of FLI1 expression during thrombocyte maturation. Blood Cells Mol Dis 44, 175–180 (2010).

• More information: Nidhi Mittal et al, Enhanced protective efficacy of a thermostable RBD-S2 vaccine formulation against SARS-CoV-2 and its variants, npj Vaccines (2023). DOI: 10.1038/s41541-023-00755-2

• Among his creations are a set of military compasses (sectors) that were simple enough for artillery crews and surveyors to use. Together with instrument maker Marc’Antonio Mazzoleni, he would produce 100 such compasses with an instruction manual for each. Galileo also offered training courses on how to use them that he himself would teach, for roughly twice the cost of one such instrument. He also created the thermoscope and thermometer — the latter of which used the thermal expansion of air to push water up in an attached tube.

• PM1K+, PM3K+, and PM6K+ water-cooled, thermopile sensors incorporate a BB+ broadband coating to measure power of continuous-wave or modulated lasers up to 1 kW, 3 kW, and 6 kW in output power, respectively, within the spectral range of 190 nm to 11 µm. A 50-mm-diameter active area measures fiber lasers, CO2, lasers and high-power industrial laser sources.

• Her senior thesis was on the light-emission properties of thermoluminescent chips, used as radiation measuring devices. She doesn’t remember how anyone at Reed obtained the mysterious TLDs, but once they were in her hands (so to speak), she was able to gamma-irradiate them in the reactor, and then use a newly acquired Tektronix rapid-scan spectrophotometer to look at the heated chips’ light emissions. 

• Doped with carbon and magnesium, the material becomes thermoluminescent in response to UV radiation

• In a landmark achievement for physics, the United Kingdom and Ireland-based Institute of Physics this month published a first-of-its-kind monograph on phototransferred thermoluminescence authored by Rhodes University’s head of Physics, Professor Makaiko Chithambo.

• Schiavone says Jami flew to Cincinnati from New York with thermite -- a powder used in fireworks -- and sparklers.

• Ukrainian drones have begun using gravity thermite munitions to destroy equipment and fortifications.

• The collection was a masterclass in textural alchemy. The black laminated jersey of the distorted drape dresses reflected the light, imparting a liquid-like quality that contrasted sharply with the solid structure of the tailored coats with T-bar chain backs. McGirr's use of black wool mohair accented with smashed jet stone embroidery and complemented by natural shearling vests exemplified his skillful hand — a blend of tailored discipline and tactile opulence.

• Erupting from the page and screen with a masterful use of colour and form, Esther's illustrations blend the nuanced textural drawing techniques of watercolours and ink with the precision and perfection of modern digital mediums. This powerful combination captures the essence of her subjects as well as the emotional and social narratives that underpin daily experiences.

• DHARAMSHALA, April 19: Former Tibetan political prisoner Namkyi, who escaped into exile last year shared a gripping testimonial of her suffering and persecution under Chinese occupation in Tibet, at a press briefing on Friday, at the exile Tibetan government’s compound here.

• Augsten R, Konigsdorffer E, Strobel J. Surgical approach in terson syndrome: vitreous and retinal findings. Eur J Ophthalmol. 2000;10:293–6.

• The approach to investigating where the wing formed involved reverse engineering. Using gene knockouts and a microsurgery experiment, the team found that the cells on the tergum and not the pleura, or sides, are key to wing formation. 

• Cancellus heatherae, female holotype, shield length – 4 mm: (A) habitus, dorsal; (B) habitus, right side; (C) habitus, ventral; (D) sixth tergite and telson, dorsal. Image credit: Felder & Lemaitre, doi: 10.11646/zootaxa.4890.4.10.

• The Spaniard then talked about his tenure at Madrid itself, and the regret he has from the two seasons at the club.

• What happens when you expose tellurite glass to femtosecond laser light? That's the question that Gözden Torun at the Galatea Lab at Ecole Polytechnique Federale de Lausanne, in collaboration with Tokyo Tech scientists, aimed to answer in her thesis work when she made the discovery that may one day turn windows into single material light-harvesting and sensing devices. The results are published in Physical Review Applied.

• The physical properties and crystal structures of most tellurate materials were only discovered during the last two decades, but they have tantalizing properties. For example, they respond to light in a way very similar to current solar materials.

• Holton, R. A. et al. First total synthesis of taxol .2. Completion of the C-Ring and D-Ring. J. Am. Chem. Soc. 116, 1599–1600 (1994).

• John McAdam had originally created the method of using crushed stone road surfaces, with the name of tarmacadam derived from him. But he was not able to create a surface where stones stuck together. Mr Hooley took what he saw and spent a year working on a method to replicate it elsewhere. By 1902 he had patented a process of adding slag to heated tar and breaking stones within the mixture to create a smooth, sold surface. He made Radcliffe Road in Nottingham the world’s first Tarmac road, covering five miles of it with his mixture.

• The candidate aims are to design, manufacture, and study advanced photonic integrated waveguides and microresonators based on a thin-film periodically poled lithium tantalate nanowaveguide platform. The main focus will be the development of advanced nanofabrication technologies for optical waveguide fabrication with low optical loss and high optical nonlinearity to demonstrate breakthroughs in the efficiency and bandwidth of nonlinear optical amplification and frequency conversion. The research will be performed at the Department of Electronic Systems, NTNU, and supported by scientific partners in Switzerland and China.

• Following the catastrophic dam collapse at Vale’s Corrego de Feijao mine in Brumadinho, the Global Industry Standard of Tailings Management (GISTM) was developed to enhance the safety and strengthen the governance of tailings facilities across the globe.

• New research out of ETH Zurich suggests that certain features of the tailings dam at Vale’s Corrego do Feijao iron ore mine in Brumadinho, southeastern Brazil, may have been the cause of the burst that released 10 million cubic metres of liquefied tailings, destroyed neighbouring settlements, took a railway bridge with it and killed at least 270 people.

• EnviroGold Global Ltd, the technology company seeking to enable the global mining industry to monetise valuable metals contained in mine waste and tailings including gold, silver, copper, zinc, and nickel, has provided an update on its plans to demonstrate and commercialise its proprietary leaching technology – the NVRO Clean Leach Process. EnviroGold has selected a manufacturer to construct the processing unit that will be used to demonstrate the NVRO Clean Leach Process to several potential customers, including major global mining companies.

• The new facility will serve a large number of clients and allow multiple mines to send tailings for processing and testing.

• SEATTLE — A graffiti tagger who was accused of causing hundreds of thousands of dollars in damage to public and private property in Seattle has been ordered to spend 80 hours cleaning up graffiti in the city, according to a plea agreement.

• WASHINGTON — The state’s Indian tribes are panning the Environmental Protection Agency for failing to impose tougher restrictions on mercury emissions from taconite operations, saying they would fail to prevent continued land and water contamination.

• Representative Dave Lislegard (DFL-Aurora) and Senator Grant Hauschild (DFL-Hermantown) called on Republicans to retract their proposal to send taconite tax dollars to non-Iron Range communities of Cromwell, Moose Lake, and Willow River.

• Charles Darwin collected this syntype male specimen of Docemina crassipes in Tierra del Fuego, an archipelago at the southernmost tip of South America, during his voyage onboard the H.M.S. Beagle (1832 to 1836). The species was described in 1918 by the English entomologist George Charles Champion, in the journal Annals and Magazine of Natural History.

• Kat Schroeder, a PhD student from the Department of Biology at the University of New Mexico, described the fusion of certain vertebrae into the synsacrum and pygostyle as one of the most significant evolutionary adaptations in birds.