Combined FTIR and EPR studies of acetylene irradiated with fast electrons in a solid xenon matrix provide experimental evidence for the formation of HXeCCH, a novel-type organic molecule with an inserted rare-gas atom. The new species resulting from the reaction of H atoms with CCH radicals in xenon was characterized by an intense IR absorption at 1486.0 cm(-1) corresponding to Xe-H stretching.
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http://dx.doi.org/10.1021/ja034585j | DOI Listing |
Environ Entomol
January 2025
Department of Biology and Ecology, Faculty of Science, University of Ostrava, Ostrava, Czech Republic.
Understanding and optimizing rearing conditions for dragonfly larvae is crucial for ecological research and conservation efforts, yet optimal rearing conditions and general rearing practices are lacking. In this study, we investigated the effect of temperature, amount of oxygen in water, presence of (artificial) plants, and age of eggs on hatchability, survival, and development of dragonfly larvae using the model species Sympetrum striolatum. We conducted three independent experiments and assessed variability between egg clutches of individual females, as well as the occurrence of cannibalism among larvae.
View Article and Find Full Text PDFScience
January 2025
Laboratory of Cerebral Cortex Research, HUN-REN Institute of Experimental Medicine, Budapest, Hungary.
Rewards are essential for motivation, decision-making, memory, and mental health. We identified the subventricular tegmental nucleus (SVTg) as a brainstem reward center. In mice, reward and its prediction activate the SVTg, and SVTg stimulation leads to place preference, reduced anxiety, and accumbal dopamine release.
View Article and Find Full Text PDFBiomol Biomed
January 2025
China Tobacco Sichuan Industrial Co., Ltd., Chengdu, China; Harmful Components and Tar Reduction in Cigarette Key Laboratory of Sichuan Province, Chengdu, China; Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
In recent years, the health challenges linked to frailty in the elderly, particularly those worsened by cigarette smoke, have become more pronounced. However, quantitative studies examining the impact of smoking dosage on frailty in this population remain limited. To address this gap, we developed a model using smoke-exposed elderly mice.
View Article and Find Full Text PDFSchizophr Bull
January 2025
Clinical, Educational and Health Psychology, University College London, London, WC1E 6BT, UK.
Background And Hypothesis: Delusions are classified into themes but the range of themes reported in the literature has never been examined and the extent to which they differ in prevalence, or relate to clinical characteristics or cultural variation, remains poorly understood.
Study Design: We identified studies reporting delusional theme prevalence in adults with psychosis and completed two multivariate, multilevel, random-effects meta-analyses: one including data from structured assessment scales only and another also including data from ad hoc and clinical assessments to include themes from a wider range of countries and contexts. Sensitivity and meta-regression analyses examined the association with clinical and methodological variables.
Phys Chem Chem Phys
January 2025
Department of Applied Physics, Hebrew University, Jerusalem, Israel.
In an era of interdisciplinary scientific research, new methodologies are necessary to simultaneously advance several fields of study. One such case involves the measurement of electron spin effects on biological systems. While magnetic effects are well known in biology, recent years have shown a surge in published evidence isolating the dependence on spin, rather than magnetic field, in biological contexts.
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