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https://www.readbyqxmd.com/read/29345167/dietary-supplements-for-health-adaptation-and-recovery-in-athletes
#1
Eric S Rawson, Mary P Miles, D Enette Larson-Meyer
Some dietary supplements are recommended to athletes based on data that supports improved exercise performance. Other dietary supplements are not ergogenic per se, but may improve health, adaptation to exercise, or recovery from injury, and so could help athletes to train and/or compete more effectively. In this review, we describe several dietary supplements that may improve health, exercise adaptation, or recovery. Creatine monohydrate may improve: recovery from and adaptation to intense training, recovery from periods of injury with extreme inactivity, cognitive processing, and reduce severity of or enhance recovery from mild traumatic brain injury (mTBI)...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29340861/investigating-the-composition-characteristics-of-dissolved-and-particulate-colloidal-organic-matter-in-effluent-dominated-stream-using-fluorescence-spectroscopy-combined-with-multivariable-analysis
#2
Min-Da Yu, Xiao-Song He, Bei-Dou Xi, Ru-Tai Gao, Xian-Wei Zhao, Hui Zhang, Cai-Hong Huang, Wenbing Tan
Fluorescence excitation-emission matrix (EEM) spectroscopy combined with principal component analysis (PCA) and parallel factor analysis (PARAFAC) were used to investigate the compositional characteristics of dissolved and particulate/colloidal organic matter and its correlations with nitrogen, phosphorus, and heavy metals in an effluent-dominated stream, Northern China. The results showed that dissolved organic matter (DOM) was comprised of fulvic-like, humic-like, and protein-like components in the water samples, and fulvic-like substances were the main fraction of DOM among them...
January 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29339305/modelling-ros-formation-in-boreal-lakes-from-interactions-between-dissolved-organic-matter-and-absorbed-solar-photon-flux
#3
Raoul Wolf, Jan-Erik Thrane, Dag Olav Hessen, Tom Andersen
Concentrations of dissolved organic matter (DOM) are increasing in a large number of lakes across the Northern hemisphere. This browning serves a dual role for biota by protecting against harmful ultraviolet radiation, while also absorbing photosynthetically active radiation. The photochemical activation of DOM and subsequent formation of reactive oxygen species (ROS) is a potentially harmful side effect, but can be difficult to measure directly in situ. In this study, we combine a data set of physico-chemical properties from 71 Nordic lakes with in vitro ROS formation quantum yields to predict ROS formations across a representative boreal ecosystem gradient...
January 11, 2018: Water Research
https://www.readbyqxmd.com/read/29335173/application-of-fe3o4-mil-100-fe-core-shell-magnetic-microspheres-for-evaluating-the-sorption-of-organophosphate-esters-to-dissolved-organic-matter-dom
#4
Long Pang, Peijie Yang, Huiqiang Yang, Liming Ge, Jingwen Xiao, Yifan Zhou
Organophosphate esters (OPEs) are widely used as flame retardants and plasticizers in many products and materials. Because of the potential biologic toxicity on human beings, OPEs are regarded as a class of emerging pollutants. Dissolved organic matters (DOM) have significant effects on the bioavailability and toxicity of the pollutants in the environment. Negligible-depletion solid-phase microextraction (nd-SPME) is an efficient way for measuring the freely dissolved pollutants but suffers from long equilibrium time...
January 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29328674/new-insights-on-ecosystem-mercury-cycling-revealed-by-stable-isotopes-of-mercury-in-water-flowing-from-a-headwater-peatland-catchment
#5
Glenn Woerndle, Martin Tsz-Ki Tsui, Stephen Sebestyen, Joel D Blum, Xiangping Nie, Randall K Kolka
Stable isotope compositions of mercury (Hg) were measured in the outlet stream and in soil cores at different landscape positions in a 9.7-ha boreal upland-peatland catchment in northern Minnesota. An acidic permanganate/persulfate digestion procedure was validated for water samples with high dissolved organic matter (DOM) concentrations and we verified the complete breakdown of DOM through Hg spike addition analysis. We report a relatively large variation in mass-dependent fractionation (δ202Hg; from -2.12 to -1...
January 12, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29328635/adsorption-and-molecular-fractionation-of-dissolved-organic-matter-on-iron-bearing-mineral-matrices-of-varying-crystallinity
#6
Elizabeth K Coward, Tsutomu Ohno, Alain F Plante
Iron (Fe)-bearing mineral phases contribute disproportionately to adsorption of soil organic matter (SOM), due to their elevated chemical reactivity and specific surface area (SSA). However, the spectrum of Fe solid-phase speciation present in oxidation-reduction-active soils challenges analysis of SOM-mineral interactions and may induce differential molecular fractionation of dissolved organic matter (DOM). This work used paired selective dissolution experiments and batch sorption of post-extraction residues to 1) quantify the contributions of Fe-bearing minerals of varying crystallinity to DOM sorption, and 2) characterize molecular fractionation using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)...
January 12, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29327192/towards-a-better-control-of-the-wastewater-treatment-process-excitation-emission-matrix-fluorescence-spectroscopy-of-dissolved-organic-matter-as-a-predictive-tool-of-soluble-bod5-in-influents-of-six-parisian-wastewater-treatment-plants
#7
Angélique Goffin, Sabrina Guérin, Vincent Rocher, Gilles Varrault
The online monitoring of dissolved organic matter (DOM) in raw sewage water is expected to better control wastewater treatment processes. Fluorescence spectroscopy offers one possibility for both the online and real-time monitoring of DOM, especially as regards the DOM biodegradability assessment. In this study, three-dimensional fluorescence spectroscopy combined with a parallel factor analysis (PARAFAC) has been investigated as a predictive tool of the soluble biological oxygen demand in 5 days (BOD5) for raw sewage water...
January 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29322009/improvement-of-spatial-learning-and-memory-cortical-gyrification-patterns-and-brain-oxidative-stress-markers-in-diabetic-rats-treated-with-ficus-deltoidea-leaf-extract-and-vitexin
#8
S Nurdiana, Y M Goh, A Hafandi, S M Dom, A Nur Syimal'ain, N M Noor Syaffinaz, M Ebrahimi
Despite the fact that Ficus deltoidea and vitexin played important roles in controlling hyperglycemia, an effective mitigation strategy dealing with cognitive deficit observed in diabetes, little is known about its neuroprotective effects. The study is aimed to determine changes in behavioral, gyrification patterns and brain oxidative stress markers in streptozotocin (STZ)-induced diabetic rats following F. deltoidea and vitexin treatments. Diabetic rats were treated orally with metformin, methanolic extract of F...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29316752/-experimental-study-on-the-expression-of-%C3%AE-sma-and-hmgb1-in-silicotic-fibrosismodel-rats-interfered-by-lumbricus
#9
T Yu, G H Li, Y M Jia, Y Lou, X Y Gan
Objective: To observe the expression of alpha smooth muscle actin (α-SMA) and high mo-bility group protein B1 (HMGB1) in silicosis model rats interfered by lumbricus. Methods: 45 rats were ran-domly divided into the control group, model group and group interfered by lumbricus. The silicosis model rats were established. The group interfered by lumbricus were intragastric administered with lumbricus decoction by the 4 ml/kg dose. The control group and model group were ig administered with the equal amount of normal saline...
November 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29315219/proposal-of-a-method-to-determine-the-correlation-between-total-suspended-solids-and-dissolved-organic-matter-in-water-bodies-from-spectral-imaging-and-artificial-neural-networks
#10
Maurício R Veronez, Lucas S Kupssinskü, Tainá T Guimarães, Emilie C Koste, Juarez M da Silva, Laís V de Souza, William F M Oliverio, Rogélio S Jardim, Ismael É Koch, Jonas G de Souza, Luiz Gonzaga, Frederico F Mauad, Leonardo C Inocencio, Fabiane Bordin
Water quality monitoring through remote sensing with UAVs is best conducted using multispectral sensors; however, these sensors are expensive. We aimed to predict multispectral bands from a low-cost sensor (R, G, B bands) using artificial neural networks (ANN). We studied a lake located on the campus of Unisinos University, Brazil, using a low-cost sensor mounted on a UAV. Simultaneously, we collected water samples during the UAV flight to determine total suspended solids (TSS) and dissolved organic matter (DOM)...
January 9, 2018: Sensors
https://www.readbyqxmd.com/read/29314761/keratinous-matrices-for-the-assessment-of-drugs-of-abuse-consumption-a-correlation-study-between-hair-and-nails
#11
Delphine Cappelle, Steven De Keukeleire, Hugo Neels, Frederic Been, Mireille De Doncker, Geert Dom, Cleo L Crunelle, Adrian Covaci, Alexander L N van Nuijs
Keratinous matrices - hair and nails - accumulate substances over time and allow retrospective investigation of past consumption. Analysis of these matrices can provide information complementary to blood and urine analysis or can be used as standalone. So far, research has primarily focused on the detection of substances in hair, while studies in nails are scarce. In this study, we assessed concentrations of drugs of abuse and their metabolites in hair, finger- and toenails collected from the same individuals to evaluate differences and correlations between matrices...
January 5, 2018: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29303558/21-tesla-ft-icr-mass-spectrometer-for-ultrahigh-resolution-analysis-of-complex-organic-mixtures
#12
Donald F Smith, David C Podgorski, Ryan P Rodgers, Greg T Blakney, Christopher L Hendrickson
We describe complex organic mixture analysis by 21 tesla (T) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Ultrahigh mass-resolving power (m/Δm50% > 2 700 000 at m/z 400) and mass accuracy (80 ppb rms) enable resolution and confident identification of tens of thousands of unique elemental compositions. We demonstrate 2.2-fold higher mass-resolving power, 2.6-fold better mass measurement accuracy, and 1.3-fold more assigned molecular formulas compared to our custom-built, state-of-the-art 9...
January 5, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29301078/molecular-chemodiversity-of-dissolved-organic-matter-in-paddy-soils
#13
Xiaoming Li, Guo-Xin Sun, Songcan Chen, Zhi Fang, Hai-Yan Yuan, Quan Shi, Yong-Guan Zhu
Organic matter (OM), and dissolved organic matter (DOM), have a major influence upon biogeochemical processes; most significantly, the carbon cycle. To date, very few studies have examined the spatial heterogeneity of DOM in paddy soils. Thus, very little is known about the DOM molecular profiles and the key environmental factors that underpin DOM molecular chemodiversity in paddy soils. Here, Fourier-Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) was applied to unambiguously resolve 11,361 molecular formulae in 16 paddy soils; thereby elucidating the molecular characteristics of paddy soil DOM...
January 4, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29301070/differences-in-riverine-and-pond-water-dissolved-organic-matter-composition-and-sources-in-canadian-high-arctic-watersheds-affected-by-active-layer-detachments
#14
Jun-Jian Wang, Melissa Lafrenière, Scott Lamoureux, Andre J Simpson, Yves Gélinas, Myrna J Simpson
Regional warming has caused permafrost thermokarst and disturbances, such as active layer detachments (ALDs), which may alter carbon feedback in Arctic ecosystems. However, it is currently unclear how these disturbances alter DOM biogeochemistry in rivers and ponds in Arctic ecosystems. Water samples from main channel, ALD-disturbed/undisturbed tributaries, and disturbed/undisturbed ponds within a catchment of Canadian High Arctic were collected and analyzed using carbon isotopes and spectroscopic methods. Both river and pond samples had large variations in dissolved organic carbon (DOC) concentrations...
January 4, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29291079/effective-harvesting-of-microalgae-by-coagulation-flotation
#15
Ling Xia, Yinta Li, Rong Huang, Shaoxian Song
This study developed a coagulation-flotation process for microalgae Chlorella sp. XJ-445 harvesting, which was composed of algal surface modification by combined use of Al3+ and cetyltrimethylammonium bromide (CTAB) and followed dispersed bubble flotation. Dissolved organic matter (DOM) in the medium was firstly characterized and mainly consisted of hydrophilic low molecular weight molecules. The dosage of collector (CTAB) and coagulant (Al3+) were optimized, and with the pretreatment of 40 mg Al3+ and 60 mg CTAB per 1 g dry biomass without pH adjustment, a maximum flotation recovery efficiency of 98...
November 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29290061/effects-of-dissolved-organic-matter-feeding-and-water-flow-on-the-bioconcentration-of-diclofenac-in-crucian-carp-carassius-auratus
#16
Guanghua Lu, Zhengxin Xie, Zhenghua Zhang
Diclofenac (DCF), a prevalent anti-inflammatory drug, is frequently detected in aquatic organisms. However, little is known about the environmental factors that affect the bioconcentration of DCF in aquatic environments. Here, we firstly investigated the bioconcentration of DCF by crucian carp (Carassius auratus) following aqueous exposure (3.57, 14.5, and 71.8 μg L-1) for 21 days. DCF can accumulate in crucian carp, and the maximum bioconcentration factors (BCFs) of 121 L kg-1 in the liver, 52.3 L kg-1 in the gills, and 46...
December 30, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29289955/association-between-body-mass-index-and-dental-caries-among-special-care-female-children-in-makkah-city
#17
Nisreen Adnan Ashour, Amal Adnan Ashour, Sakeena Basha
BACKGROUND: Dental caries and obesity are multifactorial diseases with diet being a common contributory factor. OBJECTIVE: The main purpose of the present study was to investigate the association between dental caries and obesity among special care female school children in Makkah City, Saudi Arabia. DESIGN: Analytical cross-sectional study. SETTING: Special schools in Makkah City. STUDY POPULATION AND METHODS: Schools were chosen by lottery and female children were ran...
December 31, 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/29286524/psychophysiological-characteristics-in-the-chnpp-accident-clean-up-workers-exclusion-zone-evacuees-and-anti-terrorist-operation-servicemen
#18
K M Loganovsky, M V Gresko
OBJECTIVE: Evaluation of interdependencies between psychometric parameters and spontaneous cerebral electric activity in the ChNPP accident clean up workers, evacuees from exclusion zone, and anti terrorist operation service men. OBJECT AND METHODS: Psychometric and neurophysiological parameters were reviewed in the study subjects retro spectively and in comparison. Study population included the ChNPP accident clean up workers (ACUW), evacuees from the 30 kilometer exclusion zone, specifically in a sample from a cohort of the NRCRM Clinical Epidemiological Register (n=316), and anti terrorist operation servicemen (n=81) undergoing rehabilitation in the NRCRM Radiation psychoneurology department...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/29280102/the-properties-and-dynamic-changes-of-dom-subfractions-during-food-waste-and-sugarcane-leaves-co-composting
#19
Guangchun Shan, Haoyuan Lu, Qunliang Li
The purpose of this research was to evaluate the properties and dynamic changes of humic acids (HA), fulvic acids (FA), hydrophobic neutrals (HoN), and hydrophilic (Hi) fractions of dissolved organic matter (DOM) during food waste and sugarcane leaves co-composting process. The pools of HA, FA, HoN, and Hi were separated from DOM by fractionation method, and characterized using spectroscopic (UV-vis, FTIR) and pyrolysis-GC/MS analyses. The least peaks in the HA pool were found in FTIR spectra with the simple structure in HA...
December 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29278788/reduction-in-the-exchange-of-coastal-dissolved-organic-matter-and-microgels-by-inputs-of-extra-riverine-organic-matter
#20
Ruei-Feng Shiu, Chon-Lin Lee, Wei-Chun Chin
Rivers drive large amounts of terrestrial and riverine organic matter into oceans. These organic materials may alter the self-assembly of marine dissolved organic matter (DOM) polymers into microgels and can even affect the behavior of existing natural microgels. We used Suwannee River humic acid, fulvic acid, and natural organic matter as a model of riverine organic matter (ROM) to investigate the impacts of ROM input on DOM polymer and microgel conversion. Our results indicated that the release of extra ROM, even at low concentrations (0...
December 15, 2017: Water Research
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