This study was conducted to evaluate how training for disassembling and assembling a weapon and patrol data message terminal and loading a magazine in different temperatures affected the ability to perform those skills in a cold environment. One group trained six times on separate days in a warm environment (19 degrees C), the second group trained three times in a warm environment and then three times in a cold environment (-15 degrees C), and the third group trained six times in the cold environment. Training first in warm and then in cold shortened performance time by 6% to 28%, in comparison to training only in a warm environment. Also, training in cold made the subjects faster than training in warm. In conclusion, before performing military operations in a cold environment, it is most beneficial to train first in warm and then in cold. Training only in warm produces the lowest level of performance in a cold environment.
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http://dx.doi.org/10.7205/milmed.171.8.757 | DOI Listing |
Sci Rep
January 2025
College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, 010018, Inner Mongolia, China.
Pugionium cornutum (L.) Gaertn (P. cornutum) has strong tolerance to drought, salt and disease, but the tolerance mechanisms for such stresses in P.
View Article and Find Full Text PDFEcotoxicol Environ Saf
January 2025
Division of Toxicology, Institute for Medical Research and Occupational Health, Zagreb 10000, Croatia.
Measurements of polycyclic aromatic hydrocarbons (PAHs) were simultaneously carried out at three different urban locations in Croatia (Zagreb, Slavonski Brod and Vinkovci) characterized as urban residential (UR), urban industrial (UI) and urban background (UB), respectively. This was done in order to determine seasonal and spatial variations, estimate dominant pollution sources for each area and estimate the lifetime carcinogenic health risks from atmospheric PAHs. Mass concentrations of PAHs showed seasonal variation with the highest values during the colder period and the lowest concentration during the warmer period of the year.
View Article and Find Full Text PDFSci Rep
January 2025
Nanjing ShengNuo Heat Pipe Limited Company, Nanjing, 210009, China.
This study investigates the feasibility of using nano-thermal rod for deicing tunnel pavements in cold region. The heating performance of the nano-thermal rod was compared with that of carbon fiber heating wire under low voltage conditions. Experimental studies were conducted in a controlled environmental chamber to evaluate the effects of arrangement parameters (spacing, buried depth, input power) and environmental factors (ambient temperature and moisture) on heating rate and effectiveness.
View Article and Find Full Text PDFNew Phytol
January 2025
Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México, Tercer Circuito s/n de Ciudad Universitaria, Ciudad de México, 04510, Mexico.
Along their lengths, stems experience different functional demands. Because bark and wood traits are usually studied at single points on stems, it remains unclear how carbon allocation changes along tip-to-base trajectories across species. We examined bark vs wood allocation by measuring cross-sectional areas of outer and inner bark (OB and IB), IB regions (secondary phloem, cortex, and phelloderm), and wood from stem tips to bases of 35 woody angiosperm species of diverse phylogenetic lineages, climates, fire regimes, and bark morphologies.
View Article and Find Full Text PDFJ Dairy Sci
January 2025
Clinic for Animal Reproduction, Faculty of Veterinary Medicine, Freie Universität Berlin, Königsweg 65, 14163 Berlin, Germany. Electronic address:
Newborn calves face challenges adapting from the warm uterine environment to cold ambient temperatures, often experiencing cold stress. The objective of this study was to assess the preferred inside hutch temperature of dairy calves in their first week after birth during Central European winter and to compare lying behavior in heated and non-heated hutches. Sixteen matched pairs of dairy calves (2.
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