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2022

Новости за 08.07.2022

Accuracy of age estimation and assessment of the 18-year threshold based on second and third molar maturity in Koreans and Japanese

Plos.org 

by Sehyun Oh, Akiko Kumagai, Sin-Young Kim, Sang-Seob Lee

This study aimed to validate Lee’s age estimation method and assess the 18-year threshold in Korean and Japanese populations. We evaluated the maxillary and mandibular second (M2) and third molars (M3) in 2657 orthopantomograms of the Korean and Japanese populations aged 15–23 years (19.47±2.62 years for Koreans, 19.31±2.60 years for Japanese), using Demirjian’s criteria. Dental age was estimated, and correlations between chronological and dental ages were analyzed. Читать дальше...

Assessing trade-offs in avian behaviour using remotely collected data from a webcam

Plos.org 

by Kevin A. Wood, Rebecca Lacey, Paul E. Rose

Individual animals engage in many behaviours which are mutually exclusive, and so where individuals increase the duration of time spent on one type of behavioural activity, this must be offset by a corresponding decrease in at least one other type of behaviour. To understand the variation observed in animal behaviour, researchers need to know how individuals trade-off these mutually-exclusive behaviours within their time-activity budget. In this study... Читать дальше...

An in vitro comparison of antimicrobial efficacy and cytotoxicity between povidone-iodine and chlorhexidine for treating clinical endometritis in dairy cows

Plos.org 

by Natcha Thongrueang, Shyh-Shyan Liu, Huan-Yu Hsu, Hsu-Hsun Lee

This study aimed to assess the in vitro antimicrobial effects of chlorhexidine (CHX) and povidone-iodine (PI) on clinical isolates of Escherichia coli (E. coli) and Trueperella pyogenes (T. pyogenes) from the vaginal discharge of dairy cows, as well as to compare the cytotoxicity effects of CHX and PI on bovine endometrial epithelial cells (BEnEpC). In Experiment 1, 12 E. coli and 10 T. pyogenes were isolated from the vaginal discharge of cows with a uterine infection. Читать дальше...



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Role of actin filaments and cis binding in cadherin clustering and patterning

Plos.org 

by Qilin Yu, Taeyoon Kim, Vijay Rajagopal

Cadherins build up clusters to maintain intercellular contact through trans and cis (lateral) bindings. Meanwhile, interactions between cadherin and the actin cytoskeleton through cadherin/F-actin linkers can affect cadherin dynamics by corralling and tethering cadherin molecules locally. Despite many experimental studies, a quantitative, mechanistic understanding of how cadherin and actin cytoskeleton interactions regulate cadherin clustering does not exist. Читать дальше...

Non-zero mean alpha oscillations revealed with computational model and empirical data

Plos.org 

by Alina A. Studenova, Arno Villringer, Vadim V. Nikulin

Ongoing oscillations and evoked responses are two main types of neuronal activity obtained with diverse electrophysiological recordings (EEG/MEG/iEEG/LFP). Although typically studied separately, they might in fact be closely related. One possibility to unite them is to demonstrate that neuronal oscillations have non-zero mean which predicts that stimulus- or task-triggered amplitude modulation of oscillations can contribute to the generation of evoked responses. Читать дальше...

Here Are The 10 Longest-Range EVs Available in The U.S.

Jalopnik.com 

As electric vehicles become more commonplace on roads in the United States and around the world, range is becoming less and less of an issue. According to the U.S. Environmental Protection Agency (EPA), the median range for an electric vehicle from the 2020 model year is over 250 miles. While 250 miles is easily…

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