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https://www.readbyqxmd.com/read/28534725/vitamin-d-deficiency-and-sufficiency-among-canadian-children-residing-at-high-latitude-following-the-revision-of-the-rda-of-vitamin-d-intake-in-2010-corrigendum
#1
Lalani L Munasinghe, Yan Yuan, Noreen D Willows, Erin L Faught, John P Ekwaru, Paul J Veugelers
No abstract text is available yet for this article.
April 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28534027/current-concepts-and-unresolved-questions-in-dietary-protein-requirements-and-supplements-in-adults
#2
REVIEW
Stuart M Phillips
Protein needs for otherwise healthy individuals older than 19 years are defined by the recommended dietary allowance (RDA) at 0.80 g protein/kg/day. There is no recommendation in the current RDA for subpopulations of older adults or people in various pathological situations. Despite the lack of a separate recommendation, there exists a growing body of evidence that is strongly suggestive of an increased need and/or benefit for protein in older persons. That is, intakes beyond the RDA are, in older persons, associated with benefits...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28531947/shifts-in-the-relative-abundance-of-bacteria-after-wine-lees-derived-biochar-intervention-in-multi-metal-contaminated-paddy-soil
#3
Min Xu, Hongxia Xia, Jun Wu, Gang Yang, Xiaohong Zhang, Hong Peng, Xiaoyu Yu, Li Li, Hong Xiao, Hui Qi
The impact of biochar application on soil ecological functions depends on the diversity of soil conditions and of the feedstocks from which biochar is obtained. Moreover, little information is available on the effect of biochar on dynamic changes in microorganisms with the development of rice plants in multi-metal-contaminated paddy soil amended with wine-lees-derived biochar. In this paper, biochar obtained from the pyrolysis of wine lees at 600°C was used to investigate the potential role of biochar in maintaining soil ecological functions, with consideration of the alteration of the microbial population over periods of rice growth...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28483498/design-of-a-randomized-trial-to-determine-the-optimum-protein-intake-to-preserve-lean-body-mass-and-to-optimize-response-to-a-promyogenic-anabolic-agent-in-older-men-with-physical-functional-limitation
#4
Shalender Bhasin, Caroline M Apovian, Thomas G Travison, Karol Pencina, Grace Huang, Lynn L Moore, Wayne W Campbell, Andrew Howland, Ruo Chen, Martha R Singer, Mitali Shah, Richard Eder, Haley Schram, Richelle Bearup, Yusnie M Beleva, Ashley C McCarthy, Zhouying Li, Erin Woodbury, Jennifer McKinnon, Thomas W Storer, Shehzad Basaria
The dietary protein allowance for older men to maintain lean body mass and muscle strength and to accrue optimal anabolic responses to promyogenic stimuli is poorly characterized. The OPTIMEN trial was designed to assess in older men with moderate physical dysfunction and insufficient habitual protein intake (<recommended dietary allowance, RDA, 0.8g·kg(-1)·d(-1)) the efficacy of consuming diets containing 163% RDA (1.3g·kg(-1)·d(-1)) for protein, compared to RDA, to increase lean mass, muscle performance, and physical function...
May 5, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28481906/the-underlying-processes-of-a-soil-mite-metacommunity-on-a-small-scale
#5
Chengxu Dong, Meixiang Gao, Chuanwei Guo, Lin Lin, Donghui Wu, Limin Zhang
Metacommunity theory provides an understanding of how ecological processes regulate local community assemblies. However, few field studies have evaluated the underlying mechanisms of a metacommunity on a small scale through revealing the relative roles of spatial and environmental filtering in structuring local community composition. Based on a spatially explicit sampling design in 2012 and 2013, this study aims to evaluate the underlying processes of a soil mite metacommunity on a small spatial scale (50 m) in a temperate deciduous forest located at the Maoershan Ecosystem Research Station, Northeast China...
2017: PloS One
https://www.readbyqxmd.com/read/28480001/nematode-distributions-as-spatial-null-models-for-macroinvertebrate-species-richness-across-environmental-gradients-a-case-from-mountain-lakes
#6
Guillermo de Mendoza, Walter Traunspurger, Alejandro Palomo, Jordi Catalan
Nematode species are widely tolerant of environmental conditions and disperse passively. Therefore, the species richness distribution in this group might largely depend on the topological distribution of the habitats and main aerial and aquatic dispersal pathways connecting them. If so, the nematode species richness distributions may serve as null models for evaluating that of other groups more affected by environmental gradients. We investigated this hypothesis in lakes across an altitudinal gradient in the Pyrenees...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28443785/acute-and-long-term-impact-of-high-protein-diets-on-endocrine-and-metabolic-function-body-composition-and-exercise-induced-adaptations
#7
Flor E Morales, Grant M Tinsley, Paul M Gordon
BACKGROUND: High-protein diets have been shown to improve body composition through alterations in satiety, muscle protein synthesis, and the thermic effect of food. AIM: Given these findings, the purpose of this review is to discuss the integration of the specific hormonal and metabolic effects of high-protein diets following both acute and long-term usage, especially with regard to body composition. METHODS: Full-text articles were obtained through PubMed by using the terms "high-protein diet and body composition," "high-protein diet and exercise," "high-protein diet risk," "high-protein diet side effects," "protein quality PDCAAS," "RDA for protein," and "daily protein recommendation...
April 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28439265/bacterial-and-fungal-community-structures-in-loess-plateau-grasslands-with-different-grazing-intensities
#8
Huhe, Xianjiang Chen, Fujiang Hou, Yanpei Wu, Yunxiang Cheng
The Loess Plateau of China is one of the most fragile ecosystems worldwide; thus, human production activities need to be conducted very cautiously. In this study, MiSeq high-throughput sequencing was applied to assess the relationship between bacterial and fungal community structures and changes in vegetation and soil physical and chemical properties induced by grazing, in four grasslands with different levels of grazing intensity (0, 2.67, 5.33, and 8.67 sheep/ha) in the semiarid region of the Loess Plateau...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28433916/a-novel-method-for-contributing-to-composting-start-up-at-low-temperature-by-inoculating-cold-adapted-microbial-consortium
#9
Xin-Yu Xie, Yue Zhao, Qing-Hong Sun, Xue-Qin Wang, Hong-Yang Cui, Xu Zhang, Yan-Jie Li, Zi-Min Wei
Low temperature climate presented a technical challenge to start-up composting in northern region of China. This study investigated if the cold-adapted microbial consortium (CAMC) could promote composting start-up at low temperature. In this work, the CAMC was inoculated when food waste was composted at 10°C. The results showed that inoculating CAMC accelerated the piles temperature effectively, the piles passed through the start-up period within 37h. Moreover, the inoculants could enhance the abundances of dominant strains related to organic matters degradation rate...
August 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28421792/micronutrient-supplementation-in-gastric-bypass-surgery-prospective-study-on-in%C3%AF-ammation-and-iron-metabolism-in-premenopausal-women
#10
Flávia Andréia Marin, Rozangela Verlengia, Alex Harley Crisp, Patrícia Fátima Sousa Novais, Irineu Rasera-Junior, Maria Rita Marques De Oliveira
BACKGROUND: Low-grade chronic inflammation in morbid obesity is associated with impaired iron metabolism. Bariatric surgery is effective in weight loss; however, it can induce specific nutritional deficiencies, such as iron, especially in premenopausal women. Alternatively, after surgery, there is an improvement in systemic inflammation, raising questions concerning the dosages of micronutrient supplementation. OBJECTIVES: This study aimed to assess the effect of two micronutrient supplementation schemes before and 6 months after a Roux-en-Y gastric bypass (RYGB) surgery on inflammation and iron metabolism in premenopausal women...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28419163/response-of-microbial-community-of-organic-matter-impoverished-arable-soil-to-long-term-application-of-soil-conditioner-derived-from-dynamic-rapid-fermentation-of-food-waste
#11
Jiaqi Hou, Mingxiao Li, Xuhui Mao, Yan Hao, Jie Ding, Dongming Liu, Beidou Xi, Hongliang Liu
Rapid fermentation of food waste can be used to prepare soil conditioner. This process consumes less time and is more cost-effective than traditional preparation technology. However, the succession of the soil microbial community structure after long-term application of rapid fermentation-derived soil conditioners remains unclear. Herein, dynamic rapid fermentation (DRF) of food waste was performed to develop a soil conditioner and the successions and diversity of bacterial communities in an organic-matter-impoverished arable soil after six years of application of DRF-derived soil conditioner were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28414553/gd-rda-a-new-regularized-discriminant-analysis-for-high-dimensional-data
#12
Yan Zhou, Baoxue Zhang, Gaorong Li, Tiejun Tong, Xiang Wan
High-throughput techniques bring novel tools and also statistical challenges to genomic research. Identification of which type of diseases a new patient belongs to has been recognized as an important problem. For high-dimensional small sample size data, the classical discriminant methods suffer from the singularity problem and are, therefore, no longer applicable in practice. In this article, we propose a geometric diagonalization method for the regularized discriminant analysis. We then consider a bias correction to further improve the proposed method...
April 17, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28406463/synthesis-of-pyrrolo-1-2-a-pyrimidine-enantiomers-via-domino-ring-closure-followed-by-retro-diels-alder-protocol
#13
Beáta Fekete, Márta Palkó, Matti Haukka, Ferenc Fülöp
From 2-aminonorbornene hydroxamic acids, a simple and efficient method for the preparation of pyrrolo[1,2-a]pyrimidine enantiomers is reported. The synthesis is based on domino ring-closure followed by microwave-induced retro Diels-Alder (RDA) protocols, where the chirality of the desired products is transferred from norbornene derivatives. The stereochemistry of the synthesized compounds was proven by X-ray crystallography. The absolute configuration of the product is determined by the configuration of the starting amino hydroxamic acid...
April 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28401322/biomass-and-nutrient-allocation-strategies-in-a-desert-ecosystem-in-the-hexi-corridor-northwest-china
#14
Ke Zhang, YongZhong Su, Rong Yang
The allocation of biomass and nutrients in plants is a crucial factor in understanding the process of plant structures and dynamics to different environmental conditions. In this study, we present a comprehensive scaling analysis of data from a desert ecosystem to determine biomass and nutrient (carbon (C), nitrogen (N), and phosphorus (P)) allocation strategies of desert plants from 40 sites in the Hexi Corridor. We found that the biomass and levels of C, N, and P storage were higher in shoots than in roots...
April 11, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28397124/assessing-ultraphytoplankton-and-heterotrophic-prokaryote-composition-by-flow-cytometry-in-a-mediterranean-lagoon
#15
Amel Dhib, Michel Denis, Boutheina Ziadi, Aude Barani, Souad Turki, Lotfi Aleya
In the eutrophic Ghar El Melh Lagoon (GML, Tunisia), the distribution of heterotrophic prokaryotes, pico- and nanophytoplankton was studied at five stations in November 2012 at the single cell level, along with environmental factors. Flow cytometry analysis of ultraplankton (<10 μm) resolved (i) two heterotrophic prokaryote groups, low and high nucleic acid contents (LNA and HNA, respectively), and (ii) eight to nine ultraphytoplankton groups (cryptophyte-like cells, two nanoeukaryote subgroups, two picoeukaryote subgroups and three Synechococcus-like cells subgroups)...
April 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28396869/bioaccumulation-of-some-heavy-metals-analysis-and-comparison-of-cyprinus-carpio-and-labeo-rohita-from-sardaryab-khyber-pakhtunkhwa
#16
Ali Muhammad Yousafzai, Farhad Ullah, Fathul Bari, Sumayya Raziq, Mehreen Riaz, Khalid Khan, Umar Nishan, Iram Alam Sthanadar, Baseerat Shaheen, Mussarrat Shaheen, Habib Ahmad
We examined and compared heavy metals bioaccumulation in Cyprinus carpio and Labeo rohita netted from Sardaryab, a tributary of River Kabul. By using atomic absorption spectrometry we assessed different organs including livers, gills, and muscles. Metals studied were chromium, iron, zinc, lead, and copper. Livers of both species showed higher concentrations of metals while muscles showed the least amount. Chromium and iron were the highly concentrated metals in the gills and livers of both species. A quantity of 0...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28391663/a-comparative-study-of-laboratory-dentifrice-abrasion-measuring-methods
#17
Michael Prencipe, Mark Vandeven, Brian N Feldman, Bruce R Schemehorn
OBJECTIVES: Recently, a profilometry-based method for measuring toothpaste dentin abrasivity has been proposed to be equivalent to the traditional radiotracer RDA (relative dentin abrasion) procedure. This review outlines the findings and comparative assessment of laboratory studies used to measure the abrasivity of commercially available whitening dentifrices on human dentin. Traditional radiotracer and profilometry RDA-PE (Profilometry Equivalent) methods were assessed, with the objective of determining how they compare, and also to learn if the two techniques yield RDA values that are consistent with each other, specifically in ranking and potential for discrimination of three commercially available silica-based products...
December 2016: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/28373702/comparative-analysis-of-the-spatio-temporal-dynamics-of-rotifer-community-structure-based-on-taxonomic-indices-and-functional-groups-in-two-subtropical-lakes
#18
Xinli Wen, Pan Zhai, Ruonan Feng, Ruijie Yang, Yilong Xi
Little research has focused on how rotifer communities respond to eutrophication based on their combined taxonomic and functional indices. In this research, the relationship of the environment and rotifer communities was comparatively investigated in two subtropical lakes over one year. The taxon-based indices, including species number (S), Margalef index (D), Simpson index (d), Shannon-wiener index (H'), and functional traits relying on the guild ratio (GR) and the modified guild ratio (GR') from the moderately eutrophic Lake Xiyanghu were significantly lower than those from the slightly eutrophic Lake Jinghu...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28372034/molecular-identification-enzyme-assay-and-metabolic-profiling-of-trichoderma-spp
#19
Soo-Jung Bae, Young-Hwan Park, Hyeun-Jong Bae, Junhyun Jeon, Hanhong Bae
The goal of this study was to identify and characterize the selected Trichoderma isolates by metabolic profiling and enzyme assay for evaluation of their potential as biocontrol agents against plant pathogens. Trichoderma isolates were obtained from the Rural Development Administration (RDA) Genebank Information Center (GIC) (Wanju, Republic of Korea). Eleven Trichoderma isolates were re-identified using ribosomal DNA internal transcribed spacer (ITS) regions. ITS sequence results showed new identification of Trichoderma isolates...
April 3, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28363180/influence-of-seasonality-air-mass-origin-and-particulate-matter-chemical-composition-on-airborne-bacterial-community-structure-in-the-po-valley-italy
#20
Elena Innocente, Stefania Squizzato, Flavia Visin, Chiara Facca, Giancarlo Rampazzo, Valentina Bertolini, Isabella Gandolfi, Andrea Franzetti, Roberto Ambrosini, Giuseppina Bestetti
The integration of chemical and biological data in aerosol studies represents a new challenge in atmospheric science. In this perspective it will be possible to gain a clearer and deeper comprehension of biogeochemical cycles in the atmosphere. In this view, this study aimed to investigate the relationships occurring between bacterial populations and PM chemical composition in one of the most polluted and urbanized areas in Europe: the Po Valley (Italy). Moreover, seasonality, long- and short-range transports were also evaluated to investigate the influence on airborne bacterial communities...
March 28, 2017: Science of the Total Environment
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