keyword
MENU ▼
Read by QxMD icon Read
search

Fasting water

keyword
https://www.readbyqxmd.com/read/28211324/aqueous-chlorination-of-fenamic-acids-kinetic-study-transformation-products-identification-and-toxicity-prediction
#1
Liyun Ma, Jian Li, Li Xu
Fenamic acids, one important type of non-steroidal anti-inflammatory drugs, are ubiquitous in environmental matrices. Thus it is of high significance to know the fate of them during chlorination disinfection considering their potential toxicity to the environment and humans. In the present study, the chlorination kinetics of three fenamic acids, i.e. mefenamic acid (MEF), tolfenamic acid (TOL) and clofenamic acid (CLO), were examined at different pHs, which followed second-order reaction under studied conditions...
February 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28211267/efficient-and-selective-uptake-of-tco4-by-a-cationic-metal-organic-framework-material-with-open-ag-sites
#2
Daopeng Sheng, Lin Zhu, Chao Xu, Chengliang Xiao, Yanlong Wang, Yaxing Wang, Lanhua Chen, Juan Diwu, Jing Chen, Zhifang Chai, Thomas E Albrecht-Schmitt, Shuao Wang
99Tc is one of the most problematic radioisotopes in used nuclear fuel owing to its combined features of high fission yield, long half-life, and high environmental mobility. There are only a handful of functional materials that can remove TcO4- anion from aqueous solution and identifying for new, stable materials with high anion-exchange capacities, fast kinetics, and good selectivity remains a challenge. We report here an 8-fold interpenetrated three-dimensional cationic metal-organic framework material, SCU-100, which is assembled from a tetradentate neutral nitrogen-donor ligand and two-coordinate Ag+ cations as potential open metal sites...
February 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28210946/an-online-spe-lc-ms-ms-method-for-the-analysis-of-antibiotics-in-environmental-water
#3
Meierjohann Axel, Kortesmäki Ewelina, Brozinski Jenny-Maria, Kronberg Leif
A fast and simple method for the analysis of 17 commonly used antibiotics in Finland in water samples was developed. The method combines online solid phase extraction using a reusable online trapping column combined with analytical separation on a C18 analytical column and detection by a triple quadrupole mass spectrometer. The method was fully validated for detection and quantification limits as well as linearity, repeatability, and matrix effects. The method gave an excellent linear response (r (2) > 0...
February 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28210347/assessing-cognitive-performance-in-badminton-players-a-reproducibility-and-validity-study
#4
Tanja van de Water, Barbara Huijgen, Irene Faber, Marije Elferink-Gemser
Fast reaction and good inhibitory control are associated with elite sports performance. To evaluate the reproducibility and validity of a newly developed Badminton Reaction Inhibition Test (BRIT), fifteen elite (25 ± 4 years) and nine non-elite (24 ± 4 years) Dutch male badminton players participated in the study. The BRIT measured four components: domain-general reaction time, badminton-specific reaction time, domain-general inhibitory control and badminton-specific inhibitory control. Five participants were retested within three weeks on the badminton-specific components...
January 1, 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28209247/water-hyacinth-a-potential-source-for-value-addition-an-overview
#5
REVIEW
Raveendran Sindhu, Parameswaran Binod, Ashok Pandey, Aravind Madhavan, Jose Anju Alphonsa, Narisetty Vivek, Edgard Gnansounou, Eulogio Castro, Vincenza Faraco
Water hyacinth a fresh water aquatic plant is considered as a noxious weed in many parts of the world since it grows very fast and depletes nutrients and oxygen from water bodies adversely affecting the growth of both plants and animals. Hence conversion of this problematic weed to value added chemicals and fuels helps in the self-sustainability especially for developing countries. The present review discusses the various value added products and fuels which can be produced from water hyacinth, the recent research and developmental activities on the bioconversion of water hyacinth for the production of fuels and value added products as well as its possibilities and challenges in commercialization...
January 25, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28208491/dynamic-shear-jamming-in-dense-granular-suspensions-under-extension
#6
Sayantan Majumdar, Ivo R Peters, Endao Han, Heinrich M Jaeger
Unlike dry granular materials, a dense granular suspension like cornstarch in water can strongly resist extensional flows. At low extension rates, such a suspension behaves like a viscous fluid, but rapid extension results in a response where stresses far exceed the predictions of lubrication hydrodynamics and capillarity. To understand this remarkable mechanical response, we experimentally measure the normal force imparted by a large bulk of the suspension on a plate moving vertically upward at a controlled velocity...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208212/the-function-of-the-ocelloid-and-piston-in-the-dinoflagellate-erythropsidinium-gymnodiniales-dinophyceae
#7
Fernando Gómez
The marine dinoflagellate Erythropsidinium possesses an ocelloid, the most elaborate photoreceptor organelle known in a unicellular organism, and a piston, a fast contractile appendage unknown in any other organism. The ocelloid is able to rotate, often before the cell swims. The ocelloid contains lenses that function to concentrate light. The flagellar propulsion is atrophied, and the piston is responsible for locomotion through successive extensions and contractions. During the 'locomotion mode', the contraction is ~4 times faster than the extension...
February 16, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28208062/nano-suspension-coating-as-a-technique-to-modulate-the-drug-release-from-controlled-porosity-osmotic-pumps-for-a-soluble-agent
#8
Leila Azharshekoufeh Bahari, Yousef Javadzadeh, Mohammad Barzegar Jalali, Peyvand Johari, Ali Nokhodchi, Javad Shokri
In controlled porosity osmotic pumps (CPOP), usually finding a single solvent with a capability to dissolve both film former (hydrophobic) and pore former (hydrophilic) is extremely challenging. Therefore, the aim of the present investigation was to tackle the issue associated with controlled porosity osmotic pump (CPOP) system using nano-suspension coating method. In the present study 4-Amino pyridine was used as a highly water soluble drug. In this method, a hydrophilic pore former (sucrose or mannitol) in nano range was suspended in polymeric coating solution using ball-mill...
February 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28207408/evaluation-of-cannabinoids-concentration-and-stability-in-standardized-preparations-of-cannabis-tea-and-cannabis-oil-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#9
Roberta Pacifici, Emilia Marchei, Francesco Salvatore, Luca Guandalini, Francesco Paolo Busardò, Simona Pichini
BACKGROUND: Cannabis has been used since ancient times to relieve neuropathic pain, to lower intraocular pressure, to increase appetite and finally to decrease nausea and vomiting. The combination of the psychoactive cannabis alkaloid Δ9-tetrahydrocannabinol (THC) with the non-psychotropic alkaloids cannabidiol (CBD) and cannabinol (CBN) demonstrated a higher activity than THC alone. The Italian National Institute of Health sought to establish conditions and indications on how to correctly use nationally produced cannabis to guarantee therapeutic continuity in individuals treated with medical cannabis...
February 16, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28205433/a-battery-operated-atomic-emission-analyzer-for-waterborne-arsenic-based-on-atmospheric-pressure-glow-discharge-excitation-source
#10
Chun Yang, Dong He, Zhenli Zhu, Huan Peng, Zhifu Liu, Guojun Wen, Jianghao Bai, Hongtao Zheng, Shenghong Hu, Yanxin Wang
In this paper, a sensitive atomic emission spectrometer (AES) based on a new low power and low argon consumption (< 8 W, 100 mL min(-1)) miniature direct current (DC) atmospheric pressure glow discharge (APGD) plasma (3 mm×5 mm) excitation source was developed for the determination of arsenic in water samples. In this method, arsenic in water was reduced to AsH3 by hydride generation (HG), which was then transported to the APGD source for excitation and detected by a compact CCD (charge-coupled device) microspectrometer...
February 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28201912/free-energy-functionals-for-polarization-fluctuations-pekar-factor-revisited
#11
Mohammadhasan Dinpajooh, Marshall D Newton, Dmitry V Matyushov
The separation of slow nuclear and fast electronic polarization in problems related to electron mobility in polarizable media was considered by Pekar 70 years ago. Within dielectric continuum models, this separation leads to the Pekar factor in the free energy of solvation by the nuclear degrees of freedom. The main qualitative prediction of Pekar's perspective is a significant, by about a factor of two, drop of the nuclear solvation free energy compared to the total (electronic plus nuclear) free energy of solvation...
February 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28198884/characterization-of-a-liquid-filled-nodeless-anti-resonant-fiber-for-biochemical-sensing
#12
Xiao-Lu Liu, Wei Ding, Ying-Ying Wang, Shou-Fei Gao, Ling Cao, Xian Feng, Pu Wang
We theoretically and experimentally characterize a liquid-filled nodeless anti-resonant fiber (LARF) that could find versatile applications in biochemical sensing. When a hollow-core nodeless anti-resonant fiber (HARF) is filled with a low refractive index liquid such as water or aqueous solutions in the whole hollow area, it preserves its anti-resonant reflection waveguiding mechanism with attributes encompassing the broad transmission bandwidth in UV, visible, and near IR; the neglectable confinement loss; and the acceptable single-mode quality...
February 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28196754/determination-of-groundwater-recharge-mechanism-in-the-deep-loessial-unsaturated-zone-by-environmental-tracers
#13
Zhi Li, Xi Chen, Wenzhao Liu, Bingcheng Si
Studying the groundwater recharge mechanism in regions with thick unsaturated zone can greatly improve our understanding of hydrological processes since these regions have complex groundwater processes. This study attempted to discuss the groundwater recharge in a region covered by loess over 130m deep in China's Loess Plateau. The water stable isotope, tritium and chloride in precipitation, groundwater and soil water were determined and used as inputs of mass balance methods. The tracer technique is found to be applicable and effective this region with thick unsaturated zone...
February 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28196046/bioequivalence-of-a-new-oral-levosulpiride-formulation-compared-with-a-standard-one-in-healthy-volunteers
#14
Simona De Gregori, Laura Cipollina, Annalisa De Silvestri, Marianna Ventura, Roberta Michelini, Monica Morosini, Michela Montagna, Carmine Tinelli, Mario Regazzi, Mariadelfina Molinaro, Roberto Imberti
BACKGROUND: A monocentric, single-dose, open-label, two-way, crossover randomized study was conducted by the San Matteo Phase I Clinical Trial Unit and Experimental Therapy (Pavia, Italy) to assess the bioequivalence and the systemic tolerability of a new oral formulation of levosulpiride (tablet 25 mg: test) versus a commercially available formulation on the Italian market (tablet 25 mg: reference). METHODS: Thirty-five healthy adult volunteers, males (n = 19) and females (n = 16), aged between 18 and 55 years were screened and 32 of them were enrolled in the study...
February 11, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28195732/in-vivo-predictive-dissolution-ipd-and-biopharmaceutical-modeling-and-simulation-future-use-of-modern-approaches-and-methodologies-in-a-regulatory-context
#15
H Lennernas, A Lindahl, A Van Peer, C Ollier, T Flanagan, R Lionberger, A Nordmark, S Yamashita, L Yu, G L Amidon, V Fischer, E Sjögren, P Zane, M McAllister, B Abrahamsson
The overall objective of OrBiTo, a project within Innovative Medicines Initiative (IMI), is to streamline and optimize the development of orally administered drug products through the creation and efficient application of biopharmaceutics tools. This toolkit will include both experimental and computational models developed on improved understanding of the highly dynamic gastrointestinal (GI) physiology relevant to the GI absorption of drug products in both fasted and fed states. A part of the annual OrBiTo-meeting in 2015 was dedicated to the presentation of the most recent progress in the development of the regulatory use of PBPK in silico modeling, in vivo predictive dissolution (IPD) tests and their application to biowaivers...
February 14, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28195418/upconversion-nanoparticles-synthesized-by-ultra-short-pulsed-laser-ablation-in-liquid-effect-of-stabilizing-environment
#16
Laura Gemini, Tim Schmitz, Rainer Kling, Stephan Barcikowski, Bilal Gökce
The distinctive feature of upconverting compounds to absorb and emit light in the near-infrared region has made upconverting nanoparticles of great interest in various application fields. Nevertheless, these colloids show highly hydrophobic behavior and therefore the use of a proper stabilizing agent is necessary in most cases. Although few chemical techniques for colloid stabilization are available, it is still difficult to achieve a fully reproducible synthesis method for stable upconverting nanoparticle colloids...
February 14, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28194955/luminometric-label-array-for-counting-and-differentiation-of-bacteria
#17
Milla Högmander, Catherine J Paul, Sandy Chan, Elina Hokkanen, Ville Eskonen, Tapio Pahikkala, Sari Pihlasalo
Methods for simple and fast detection and differentiation of bacterial species are required for instance in medicine, water quality monitoring, and the food industry. Here, we have developed a novel label array method for the counting and differentiation of bacterial species. This method is based on the nonspecific interactions of multiple unstable lanthanide chelates and selected chemicals within the sample leading to a luminescence signal profile that is unique to the bacterial species. It is simple, cost-effective, and/or user-friendly compared to many existing methods, such as plate counts on selective media, automatic (hemocytometer-based) cell counters, flow cytometry, and polymerase chain reaction (PCR) -based methods for identification...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28193543/reduction-of-manganese-intake-improves-neuropsychological-manifestations-in-rats-with-minimal-hepatic-encephalopathy
#18
Ying Li, Lihong Mei, Jinwei Qiang, Changxue Ji, Shuai Ju
Brain manganese deposition is led by liver dysfunction and/or portal-systemic shunting in minimal hepatic encephalopathy (MHE). Manganese is toxic and can cause cognitive disorders and extrapyramidal symptoms. Thus, reduction of manganese intake might be considered as a potential treatment strategy for MHE. In this study we aimed to investigate whether low- or no-manganese feed can improve the neuropsychological manifestations in MHE rats. Rats with MHE were established by partially ligating the portal vein and fed a manganese diet (MHE-M, 10 mg per kg feed; n=24), a no-manganese diet (MHE-N; n=24) and a half-manganese diet (MHE-H; n=24) for 2, 4, 6 and 8 weeks, with six rats in each subgroup...
February 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28193051/glutathione-modified-gold-nanoparticles-for-sensitive-colorimetric-detection-of-pb-2-ions-in-rainwater-polluted-by-leaking-perovskite-solar-cells
#19
Yaming Yu, Ying Hong, Peng Gao, Mohammad Khaja Nazeeruddin
In the past few years, the advent of lead halide perovskite solar cells (PSCs) has revolutionized the prospects of the third- generation photovoltaics and the reported power conversion efficiency (PCE) has been updated to 22%. Nevertheless, two main challenges, including the poisonous content of Pb and the vexing instability toward water, still lie between the lab-based PSCs technology and large scale commercialization. With this background, we first evaluated Pb(2+) concentration from the rainwater samples polluted by three types of markets promising PSCs with inductively coupled plasma mass spectrometry measurements (ICP-MS) as a case study...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28193014/simple-and-highly-sensitive-molecular-diagnosis-of-zika-virus-by-lateral-flow-assays
#20
Dohwan Lee, Yong Shin, Seok Chung, Kyo Seon Hwang, Dae Sung Yoon, Jeong Hoon Lee
We have developed a simple, user-friendly, and highly sensitive Zika virus (ZIKV) detection method by incorporating optimized reverse transcription loop-mediated isothermal amplification (RT-LAMP) and a lateral flow assay (LFA). The optimized RT-LAMP reaction was carried out using Bst 3.0 polymerase, which has robust and fast isothermal amplification performance even in the presence of high concentrations of inhibitors; this permitted the amplification of ZIKV RNA in pure water and human whole blood. In addition, the strong reverse transcription activity of Bst 3...
December 20, 2016: Analytical Chemistry
keyword
keyword
92099
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"