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Новости за 14.06.2023

Improved multivariate modeling for soil organic matter content estimation using hyperspectral indexes and characteristic bands

Plos.org 

by Ming-Song Zhao, Tao Wang, Yuanyuan Lu, Shihang Wang, Yunjin Wu

Soil organic matter (SOM) is a key index of soil fertility. Calculating spectral index and screening characteristic band reduce redundancy information of hyperspectral data, and improve the accuracy of SOM prediction. This study aimed to compare the improvement of model accuracy by spectral index and characteristic band. This study collected 178 samples of topsoil (0–20 cm) in the central plain of Jiangsu, East China. Firstly... Читать дальше...

Gut microbiota and cognitive development in infant mice: Quantity and source of potable water

Plos.org 

by Chong-Su Kim, Dong-Mi Shin

Not only the water quantity consumed but also the source of drinking water has been considered for their health benefits, but there is limited evidence. We aimed to determine whether the amount and type of drinking water affect physiological and biological functions, including brain function, by confirming how it affects gut microbiota which has an important regulatory role in host physiology. Three-week-old infant mice were subjected to 1) a water restriction experiment (control group... Читать дальше...

Agricultural production diversity, child dietary diversity and nutritional status in poor, rural Gansu Province of China

Plos.org 

by Xinghua Liu, Chengfang Liu, Kevin Chen

Research has shown mixed findings on the link between production diversity and household dietary diversity. The question is whether this link holds for children. In this study we examine the relationship between household’s agricultural production diversity and child dietary diversity, and between production diversity and child nutritional status. Smallholder farm households (n = 1067) and children (n = 1067) aged 3–16 years from two then nationally... Читать дальше...

Protocol for designing and testing the effectiveness of a post caesarean section home care guide in preventing surgical site infection in Central Tanzania

Plos.org 

by Mwajuma Bakari Mdoe, Lilian Teddy Mselle, Stephen Mathew Kibusi

Background

The advantages of caesarean section (CS) in managing obstetric emergencies are abundant, but it is associated with several complications including surgical site infection (SSI). SSI significantly contributes to maternal morbidity and mortality rates. Mothers often do not receive adequate information about their at-home post-delivery care. Also, guidelines on post-CS care worldwide typically do not include home care recommendations. Читать дальше...



Effects of environmental conditions and catch processing on survival probability of plaice discards in the North Sea pulse trawl fishery

Plos.org 

by Edward Schram, Pieke Molenaar, Paul W. Goedhart, Jan Jaap Poos

Undersized European plaice dominate the discarded fraction of the catch of the beam trawl fisheries for sole in the Southern North Sea. Effects of environmental conditions at sea and of the use of a water-filled hopper on the survival of undersized European plaice discarded by pulse trawl fisheries were explored. During trips with commercial pulse-trawlers catches were discharged in either water-filled hoppers or conventional dry hoppers. Читать дальше...

Prediction of local recurrence in tenosynovial giant cell tumor of the knee: Based on preoperative MRI evaluation into disease subtypes and severity

Plos.org 

by Jun-Ho Kim, Seul Ki Lee, Jee-Young Kim

Objective

Tenosynovial giant cell tumors (TSGCTs) of the knee differ in their clinical outcome according to disease subtypes and severity. The aim of this study was to determine the predictive MRI features related to local recurrence in TSGCT of the knee regarding disease subtypes and severity.

Methods

This retrospective study included 20 patients with pathology-proven TSGCT of the knee who underwent preoperative MRI and surgery from Jan. Читать дальше...

Rattractor—Instant guidance of a rat into a virtual cage using the deep brain stimulation

Plos.org 

by Naoki Sudo, Sei-etsu Fujiwara, Takashi Isoyama, Osamu Fukayama

We developed “Rattractor” (rat attractor), a system to apply electrical stimuli to the deep brain of a rat as it stays in a specified region or a virtual cage to demonstrate an instant electrophysiological feedback guidance for animals. Two wire electrodes were implanted in the brains of nine rats. The electrodes targeted the medial forebrain bundle (MFB), which is a part of the reward system in the deep brain. Following the recovery period... Читать дальше...

Test and evaluation of driving comfort of rice combine harvester

Plos.org 

by Ying Zhao, Jinyi Liu, Lina Ma, Jianfei Zhang, Caixue Zhan

During the field operation of rice combine harvester, the vibration generated by vibration component will only reduce mechanical reliability and yield, but also cause resonance in the human body, leading to a decrease in driving comfort and even damage to the driver’s health. To study the impact of combine harvester vibration on driving comfort, a certain type of tracked rice combine harvester was selected as the research object... Читать дальше...

Nutrition knowledge, diet quality and orthorexic behaviors in Polish students–a pre-post repeated cross-sectional study

Plos.org 

by Marta Plichta, Marzena Jezewska-Zychowicz

Nutrition knowledge acquired in college students may not only help in promoting an adequate diet, but also lead to excessive preoccupation with healthy eating, which is referred to as orthorexic behaviors. This study aimed to assess the relationship between nutrition knowledge, diet quality and orthorexic behaviors among college students of food and nutrition majors. Data were collected from a sample of 131 college students through a pre-post repeated... Читать дальше...

IMPACT smoking cessation support for people with severe mental illness in South Asia (IMPACT 4S): A protocol for a randomised controlled feasibility trial of a combined behavioural and pharmacological support intervention

Plos.org 

by Papiya Mazumdar, Gerardo Zavala, Faiza Aslam, Krishna Prasad Muliyala, Santosh Kumar Chaturvedi, Arun Kandasamy, Asad Nizami, Baha Ul Haq, Ian Kellar, Cath Jackson, Heather Thomson, David McDaid, Kamran Siddiqi, Catherine Hewitt, Najma Siddiqi, Simon Gilbody, Pratima Murthy, Noreen Dadirai Mdege

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Analytical solution of l-i SEIR model–Comparison of l-i SEIR model with conventional SEIR model in simulation of epidemic curves

Plos.org 

by Xiaoping Liu

The Susceptible-Exposed-Infectious-Recovered (SEIR) epidemic model has been commonly used to analyze the spread of infectious diseases. This 4-compartment (S, E, I and R) model uses an approximation of temporal homogeneity of individuals in these compartments to calculate the transfer rates of the individuals from compartment E to I to R. Although this SEIR model has been generally adopted, the calculation errors caused by temporal homogeneity approximation have not been quantitatively examined. Читать дальше...

Long-lived metastable knots in polyampholyte chains

Plos.org 

by Masoumeh Ozmaian, Dmitrii E. Makarov

Knots in proteins and DNA are known to have significant effect on their equilibrium and dynamic properties as well as on their function. While knot dynamics and thermodynamics in electrically neutral and uniformly charged polymer chains are relatively well understood, proteins are generally polyampholytes, with varied charge distributions along their backbones. Here we use simulations of knotted polymer chains to show that variation in the charge distribution... Читать дальше...





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