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Новости за 30.08.2019

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Rapid and long-lasting improvements in neural discrimination of acoustic signals with passive familiarization

Plos.org 
En

by Efe Soyman, David S. Vicario

Sensory representations in the adult brain must undergo dynamic changes to adapt to the complexity of the external world. This study investigated how passive exposure to novel sounds modifies neural representations to facilitate recognition and discrimination, using the zebra finch model organism. The neural responses in an auditory structure in the zebra finch brain, Caudal Medial Nidopallium (NCM), undergo a long-term form of adaptation with repeated stimulus presentation... Читать дальше...

Motor learning without moving: Proprioceptive and predictive hand localization after passive visuoproprioceptive discrepancy training

Plos.org 
En

by Ahmed A. Mostafa, Bernard Marius ‘t Hart, Denise Y. P. Henriques

An accurate estimate of limb position is necessary for movement planning, before and after motor learning. Where we localize our unseen hand after a reach depends on felt hand position, or proprioception, but in studies and theories on motor adaptation this is quite often neglected in favour of predicted sensory consequences based on efference copies of motor commands. Both sources of information should contribute, so here... Читать дальше...



Gut microbiota and their putative metabolic functions in fragmented Bengal tiger population of Nepal

Plos.org 
En

by Dibesh Karmacharya, Prajwol Manandhar, Sulochana Manandhar, Adarsh M. Sherchan, Ajay N. Sharma, Jyoti Joshi, Manisha Bista, Shailendra Bajracharya, Nagendra P. Awasthi, Netra Sharma, Bronwyn Llewellyn, Lisette P. Waits, Kanchan Thapa, Marcella J. Kelly, Momchilo Vuyisich, Shawn R. Starkenburg, Jean-Marc Hero, Jane Hughes, Claudia Wultsch, Laura Bertola, Nicholas M. Fountain-Jones, Amit K. Sinha

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Measurement equivalence of the Four-Dimensional Symptom Questionnaire (4DSQ) in adolescents and emerging adults

Plos.org 
En

by Berend Terluin, Johannes C. van der Wouden, Henrica C. W. de Vet

The Four-Dimensional Symptom Questionnaire (4DSQ) is a self-report instrument measuring distress, depression, anxiety and somatization. The questionnaire has been developed and validated in adult samples. It is unknown whether adolescents and emerging adults respond to the 4DSQ items in the same way as adults do. The objective of the study was to examine measurement equivalence of the 4DSQ across adolescents, emerging adults and adults. Читать дальше...

Mutual information based stock networks and portfolio selection for intraday traders using high frequency data: An Indian market case study

Plos.org 
En

by Charu Sharma, Amber Habib

In this paper, we explore the problem of establishing a network among the stocks of a market at high frequency level and give an application to program trading. Our work uses high frequency data from the National Stock Exchange, India, for the year 2014. To begin, we analyse the spectrum of the correlation matrix to establish the presence of linear relations amongst the stock returns. A comparison of correlations with pairwise mutual information shows the further... Читать дальше...

Determination of optimum irrigation strategies and effect of drip irrigation system on growth and water use efficiency of pear jujube in Loess Hilly region of northern Shaanxi

Plos.org 
En

by Shenglan Ye, Jichang Han, Tiancheng Liu

The aim of this study is to explore suitable drip irrigation system on the water saving and high yield of pear-jujube from 2009 to 2012 years in the mountain of northern Shaanxi. The treatments consisted of combinations of 5 drip irrigation systems (DP). The irrigation quota of DP-1, DP-2 and DP-3 treatment was 100 m3 hm-2, 135 m3 hm-2 and 180 m3 hm-2, respectively, irrigated 4 times. The irrigation quota of DP-4 and DP-5 treatment was 135 m3 hm-2 and irrigated 3 and 2times... Читать дальше...

Новости России
Москва

Московский аэропорт Домодедово и Всероссийское общество инвалидов заключили соглашение о сотрудничестве


De novo transcriptome profile of coccolithophorid alga Emiliania huxleyi CCMP371 at different calcium concentrations with proteome analysis

Plos.org 
En

by Onyou Nam, Jong-Moon Park, Hookeun Lee, EonSeon Jin

The haptophyte alga Emiliania huxleyi is the most abundant coccolithophore in the modern ocean and produces elaborate calcite crystals, called coccolith, in a separate intracellular compartment known as the coccolith vesicle. Despite the importance of biomineralization in coccolithophores, the molecular mechanism underlying it remains unclear. Understanding this precise machinery at the molecular level will provide the knowledge needed... Читать дальше...

Crystal structure of L-aspartate aminotransferase from Schizosaccharomyces pombe

Plos.org 
En

by Soo Yeon Jeong, Hyeonseok Jin, Jeong Ho Chang

L-aspartate aminotransferase is a pyridoxal 5ʹ-phosphate-dependent transaminase that catalyzes reversible transfer of an α-amino group from aspartate to α-ketoglutarate or from glutamate to oxaloacetate. L-aspartate aminotransferase not only mediates amino acid and carbohydrate metabolism but also regulates the cellular level of amino acids by catalyzing amino acid degradation and biosynthesis. To expand our structural information, we determined... Читать дальше...


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