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So, four types of molecules - azobenzene, pentacene, tetracyanoquinodimethane (TCNQ) and porphine - were put under the microscope in a cold vacuum chamber to ensure no outside influences would affect the results. ScienceAlert — We Have The First-Ever Images of Molecules Changing Their Charge State : ScienceAlert
Landau SM, Lu M, Joshi AD, Pontecorvo M, Mintun MA, Trojanowski JQ, et al. Comparing positron emission tomography imaging and cerebrospinal fluid measurements of β-amyloid. Ann Neurol. 2013;74:826–36. Nature — Characteristics of discordance between amyloid positron emission tomography and plasma amyloid-β 42/40 positivity | Translational Psychiatry
Consisting only of an electron and a positron, positronium (Ps) offers unique exploration of a purely leptonic matter–antimatter system. Traditionally, experiments have relied on formation processes that produce clouds of Ps with a large velocity distribution, limiting the precision of spectroscopic studies due to the large Doppler broadening of the Ps transition lines. Now, after almost 10 years of effort, the AEgIS collaboration at CERN’s Antiproton Decelerator has experimentally demonstrated laser-cooling of Ps for the first time, opening new possibilities for antimatter research. CERN Courier — The promise of laser-cooled positronium – CERN Courier
While the Election Commission has in the last decade experimented with awareness messages on Meghdoot postcards and special covers, postage stamps were, in the past, the mainstay of India Post’s attempt to build awareness about elections. Frontline — Elections on postage: A journey into history - Frontline
Following a tradition at St. Barnabas in which many parishioners remain in their pews until the last note of the postlude sounds, virtually the entire congregation stayed til the end when they burst into applause and in some cases shouted their approval as they might for a well-sung aria in a Puccini opera. The Hudson Indy Westchester's Rivertowns News - — Irvington Organist and Choir Master Plays His Last Postlude - The Hudson Indy Westchester's Rivertowns News -
Une récente réémergence de l’épidémie de Mpox ou « variole du singe » a révélé les poxvirus comme des menaces possibles en santé publique, soulignant dans le même temps, le manque de connaissances à leur sujet. En « plongeant » jusqu'au cœur des poxvirus pour décrypter l'architecture du noyau du virus, ces virologues et scientifiques de l’Institute of Science and Technology Austria (ISTA) apportent, dans la revue Nature Structural & Molecular Biology, de précieuses clés pour de nouveaux traitements. santé log — VARIOLE du SINGE : Ils décryptent le noyau du poxvirus | santé log
Des chercheurs du Center for Sleep and Cognition de la Yong Loo Lin School of Medicine se sont demandé s’il existait une durée idéale de sieste en milieu d'après-midi qui permette d'atteindre un équilibre entre praticabilité et avantages significatifs ? Mémoire : vive la sieste masquée ! - Alternative Santé
While those actions were triggered by the energy crisis, he was receptive to the emerging issue of climate change. Just before leaving office, he released a report from his environmental think tank predicting “widespread and pervasive changes in global climatic, economic, social and agricultural patterns” if the world continued to rely on fossil fuels. It was a prescient warning almost half a century ago. Inside Story — Prescient president • Inside Story
To identify variations in total ceramide (Cer) and total sphingomyelin (SM) levels associated to dyslipidemia, vitamin D deficiency and obesity, HPTLC-primuline profiling was performed on SLs extracted from NW (n = 15), -vitDNW (n = 23) and -vitDO (n = 25) men and from NW (n = 8), -vitDNW (n = 23) and -vitDO (n = 35) women. After separation on HPTLC plates, SL bands were compared by a profiling approach based on HPTLC-densitometry and FDIC (fluorescence detection by intensity changes) emission after primuline staining (data shown in Fig. S1). Nature — Sphingolipid serum profiling in vitamin D deficient and dyslipidemic obese dimorphic adults | Scientific Reports
Feb. 21, 2003 — Compared with free prostate specific antigen (fPSA) assays, proenzyme PSA (pPSA) testing helps detect prostate cancer and spares patients from unnecessary biopsies, according to the results of a preliminary trial reported in the February issue of Urology. Medscape — pPSA Improves Detection of Prostate Cancer
The issue of progradation has been observed on 35% of the coast of Espírito Santo. In the Parnaíba river delta, between the states of Maranhão and Piauí, erosion has unearthed mangroves previously covered by sand. In Rio Grande do Norte, 60% of the 399 km shoreline has been affected by erosion. Ceará has 572 km of coastline, 30% of which has suffered erosion and 10% progradation. The progressive destruction of Brazilian beaches : Revista Pesquisa Fapesp
The AWA said many populations of pronghorn rely on migration to survive, avoiding the heavy snows and harsh winters by moving south, and returning north to graze in the spring. Global News — Solar project a threat to pronghorn migration: Alberta wildlife group | Globalnews.ca
PINEDALE—Mike Schmid told Wyoming Game and Fish commissioners that pronghorn populations remained in good shape throughout the intensive-drilling era 20 years ago in the Green River Basin’s “mega fields” — some of the largest natural gas fields the industry has ever known. WyoFile — Industry pressure fails to halt Wyoming’s ‘Path of the Pronghorn’ pursuit - WyoFile
Fourteen Sonoran pronghorn were transferred last month from a semi-captive breeding facilities on the Kofa and Cabeza Prieta National Wildlife Refuges to a holding pen on the eastern edge of U.S. Army Yuma Proving Ground (YPG), where they would be released into the wild. www.army.mil — Recovery project saving the rare Sonoran pronghorn | Article | The United States Army
Everything you need to know about the Minecraft Mangrove trees, including where to find them, how to plant them, and whatever a propagule is. PCGamesN — Minecraft Mangrove trees – how to plant propagules
Interestingly, there appears to be physiological importance of the co-existence of phages and bacterium. Some researchers suggest that this phenomenon may bring potential benefits for the bacterial host, by introducing resistance to other phages or by enhancing the capability of the bacteria to form biofilms, and therefore increase the survivability of microorganisms in their natural ecological niche. Furthermore, the occurrence of prophage sequences in bacterial genomes has also been linked to the potential pathogenicity of microorganisms, which seems particularly relevant to microorganisms living in the human body16,17,18. Nature — Occurrence and genetic diversity of prophage sequences identified in the genomes of L. casei group bacteria | Scientific Reports
Richard Wilson relates how the rare, highly radioactive, highly toxic element protactinium puzzled chemists for a long time, and was discovered and named twice from two different isotopes before finding its place in fundamental research. Nature — Peculiar protactinium | Nature Chemistry
Skibbe, O. An improved quantitative protargol stain for ciliates and other planktonic protists. Arch. Hydrobiol. 130, 339–347 (1994). Nature — Morphological diversity and molecular phylogeny of five Paramecium bursaria (Alveolata, Ciliophora, Oligohymenophorea) syngens and the identification of their green algal endosymbionts | Scientific Reports
Researchers studying ambrosia beetles used micro-CT scanning to develop this 3-D reconstruction of the mycangia and other internal organs within the prothorax and mesonotum of an Xylosandrus amputatus beetle. A: lateral side; B: frontal view; C: ventral view; D: mycangium with prothorax musculature nearby. (Image originally published in Li et al 2018, Journal of Insect Science) Entomology Today — 3-D reconstruction of ambrosia beetle via micro-CT scanning - Entomology Today
Surprisingly, the researchers found that these worms, which are protostomes, share many gene families and gene arrangements with the deuterostomes, the group that includes the vertebrates. For example, they share genes that are involved in multicellularity and maintenance of the body's internal environment. They also share a common system for controlling head development; the same mechanism that controls vertebrate head patterning also controls the development of ribbon worm heads and horseshoe worm feeding tentacles. Other protostome groups, such as insects, have lost some of these genetic features. Worm genomes reveal a link between humans and distant relatives