keyword
MENU ▼
Read by QxMD icon Read
search

Alkaline water

keyword
https://www.readbyqxmd.com/read/28636347/the-structure-and-dynamics-of-alginate-gels-crosslinked-by-polyvalent-ions-probed-via-solid-state-nmr-spectroscopy
#1
Jiří Brus, Martina Urbanová, Jiri Czernek, Miroslava Pavelkova, Katerina Kubova, Jakub Vyslouzil, Sabina Abbrent, Rafal Konefal, Jiri Horsky, David Vetchy, Jan Vysloužil, Pavel Kulich
Alginate gels are an outstanding biomaterial widely applicable in tissue engineering, medicine, and pharmacy for cell transplantation, wound healing and efficient bioactive agent delivery, respectively. This contribution provides new and comprehensive insight into the atomic-resolution structure and dynamics of polyvalent ion-crosslinked alginate gels in microbead formulations. By applying various advanced solid-state NMR (ssNMR) spectroscopy techniques, we verified the homogenous distribution of the crosslinking ions in the alginate gels and the high degree of ion exchange...
June 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28631910/-prevalence-and-risk-factors-for-nephrolithiasis-among-young-rural-residents
#2
A V Sin'kov, I N Volosatova, G M Sin'kova, L A Nikolaeva
AIM: To determine the prevalence of nephrolithiasis, assess the significance of known risk factors, and identify new risk factors for nephrolithiasis among young rural residents. MATERIALS AND METHODS: This cross-sectional study was conducted in 5 settlements of the Irkutsk rural district of the Irkutsk region and involved 408 inhabitants (93 men, 315 women) aged from 18 to 47 years. The selection of candidates for the study was randomized. The response of the population was 81...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28629110/recycling-the-liquid-fraction-of-alkaline-hydrogen-peroxide-in-the-pretreatment-of-corn-stover
#3
Bárbara Ribeiro Alves Alencar, Alexandre Libanio Silva Reis, Raquel de Fatima Rodrigues de Souza, Marcos Antônio Morais, Rômulo Simões Cezar Menezes, Emmanuel Damilano Dutra
The aim of this study was to evaluate the influence of recycling the liquid fraction of pretreatment with alkaline hydrogen peroxide (AHP) on the hydrolysis of corn stover. Corn stover was pretreated in the traditional condition with 7.5% v/v H2O2. After pretreatment, the solids were separated from the liquid fraction and five successive reuse cycles of the liquid fraction were tested. The solid fraction from pretreatment in each recycle was submitted to enzymatic hydrolysis. The number of recycles had a linear negative effect (R(2)=0...
June 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28626252/amelioration-of-arsenic-induced-toxic-effects-in-mice-by-dietary-supplementation-of-syzygium-cumini-leaf-extract
#4
Milan Barai, Nazmul Ahsan, Nilanjana Paul, Khaled Hossain, Mohammad Abdur Rashid, Masashi Kato, Nobutaka Ohgami, Anwarul Azim Akhand
Arsenic created a serious public health problem in Bangladesh due to its presence in groundwater and dissemination of the toxic effects to millions of people. The scarcity of the treatment options to manage this affected population has made the situation much worse. To find a promising treatment option, this study was undertaken to examine the ameliorating roles of Syzygium cumini leaf extract (SLE) against arsenic-induced toxic effects in mice. Swiss albino mice were divided into four groups where 'control' group received pure water + normal feed, 'arsenic (As)' group received sodium arsenite (NaAsO2)-containing water (10 μg/g body weight/day) + normal feed, 'As+SLE' group received NaAsO2-containing water + feed supplemented with SLE (50 µg/g body weight/day) and finally the 'SLE' group received pure water + feed supplemented with SLE...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28624636/water-geochemistry-of-shallow-lakes-from-the-southeastern-pampa-plain-argentina-and-their-implications-on-mollusk-shells-preservation
#5
Paula A Cristini, Eleonor Tietze, Claudio G De Francesco, Daniel E Martínez
A seasonal sampling of sediments, column and interstitial water for physico-chemical analysis were performed in littoral and open water areas in three freshwater shallow lakes (Nahuel Rucá, Las Mostazas and Los Carpinchos) from Southeastern Pampa plain, Argentina. The main objective of the present study is to evaluate how the characteristics of the depositional environments could be affecting mollusk shell preservation. These lakes are very shallow (2m) and are characterized by an extensive littoral area, dominated by the emergent macrophyte Schoenoplectus californicus, which forms a complete ring around the lake, and an open water area, in general free of vegetation...
June 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28622989/rare-earth-elements-mobility-processes-in-an-amd-affected-estuary-huelva-estuary-sw-spain
#6
K L Lecomte, A M Sarmiento, J Borrego, J M Nieto
Huelva Estuary is a transition zone where REE-rich acidic waters interact with saline-alkaline seawater. This mixing process influences the geochemical and mineralogical characteristics of particulate and dissolved fractions. The Tinto River has >11,000μgL(-1) dissolved REE (pH=1.66), whereas seawater only reaches 8.75·10(-2)μgL(-1) dissolved REE (pH=7.87). REE-normalized patterns in "pH<6 solutions" are parallel and show similarities, diminishing their concentration as pH increases. Sequential extraction performed on the generated precipitates of mixed solutions indicates that most REE are associated to the residual phase...
June 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28622725/self-supported-biocarbon-fiber-electrode-decorated-with-molybdenum-carbide-nanoparticles-for-highly-active-hydrogen-evolution-reaction
#7
Jian Xiao, Yan Zhang, Zheye Zhang, Qi-Ying Lv, Feng Jing, Kai Chi, Shuai Wang
To devise and facilely synthesize an efficient noble metal-free electrocatalyst for accelerating the sluggish kinetics in the hydrogen evolution reaction (HER) are still a big challenge for electrolytic water splitting. Herein, we present a simple one-step approach for constructing self-supported biocarbon fiber cloth decorated with molybdenum carbide nanoparticles (BCF/Mo2C) electrodes by a direct annealing treatment of the Mo oxyanions loaded cotton T-shirt. The Mo2C nanoparticles not only serve as the catalytic active sites toward the HER but also enhance the hydrophilicity and conductivity of resultant electrodes...
June 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28622618/recovery-and-purification-of-limonin-from-pummelo-citrus-grandis-peel-using-water-extraction-ammonium-sulfate-precipitation-and-resin-adsorption
#8
Yuan Fan Yang, Liang Zheng Zhang, Xi Ping Du, Su Fang Zhang, Li Jun Li, Ze Dong Jiang, Li Ming Wu, Hui Ni, Feng Chen
Limonin is a bioactive compound that is traditionally extracted from citrus seeds using organic solvents or alkaline/metal ion solutions. In the present study, pummelo [Citrus grandis] peel was investigated for limonin preparation using a novel process consisting of water extraction, ammonium sulfate precipitation and resin adsorption. The pummelo peel was determined to have 4.7mg/g limonin, which could be extracted by water and further recovered by ammonium sulfate precipitation with a yield of 2.4mg/g, which was similar to that of traditional process using ethanol extraction and vacuumed evaporation...
June 3, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28621383/peach-and-cherry-agroindustrial-wastes-new-and-economic-sources-for-the-production-of-lignocellulolytic-enzymes
#9
Merve Akpinar, Raziye Urek
Pleurotus eryngii was incubated on both peach and cherry agroindustrial wastes by solid state fermentation for 30 days without/with pretreatment conditions. The lignocellulosic substrates were pretreated with dilute acid and alkaline solutions, hot water before incubation. The maximum carboxymethyl cellulase and xylanase activities peaked on 3rd and 5th days under control conditions of both wastes, respectively. The highest laccase and manganese peroxidase activities reached to their maximum on 17th day as 2193...
June 2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/28620710/investigation-of-some-disinfection-chemicals-and-water-quality-parameters-in-swimming-pools-in-the-city-center-and-districts-of-canakkale-turkey
#10
Tolga Uysal, Selehattin Yilmaz, Muhammet Turkoglu, Murat Sadikoglu
In this study, the variations in concentrations of some disinfection chemicals such as cyanuric acid (CyA), free chlorine (FC), and residual chlorine (RC), which affect human health, were investigated in the water of swimming pools. In addition, quality parameters such as temperature, pH, and total alkalinity (TA) in 44 swimming pools located in the city center and districts of Canakkale, Turkey, were examined in the summer period. While FC and RC amounts were analyzed using tablet tests with N-N-diethyl phenylenediamine (DPD 1) and potassium iodine (DPD 3) using the colorimetric method in the comparator, TA and CyA levels were measured with a photometric method...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28620618/histopathological-and-reproductive-evaluation-in-male-rats-fed-jatropha-curcas-seed-cake-with-or-without-alkaline-hydrolysis-and-subjected-to-heat-treatment
#11
Laiane Teixeira Sousa Moura, Domenica Palomaris Mariano Souza, Simone Mendonça, José Antônio de Aquino Ribeiro, Luciano Fernandes Sousa, Adriano Tony Ramos, Paulo César Maiorka, Vera Lúcia de Araújo, Viviane Mayumi Maruo
Jatropha curcas cake, a by-product of biodiesel production, is rich in protein and has potential to be used in livestock feed; however, the presence of antinutritional factors and phorbol esters limits its use. Thus, this study investigated toxicological and reproductive effects in male Wistar rats after subchronic exposure to J. curcas cake subjected to detoxification procedures. Rats were divided into seven groups (n = 10) and treated for 60 days. The control group received commercial feed, while experimental groups received a diet containing 5% J...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28619449/development-of-semisolid-self-microemulsifying-drug-delivery-systems-smeddss-filled-in-hard-capsules-for-oral-delivery-of-aciclovir
#12
Ljiljana Djekic, Jovana Jankovic, Bojan Čalija, Marija Primorac
The study aimed to develop semisolid self-microemulsifying drug delivery systems (SMEDDSs) as carriers for oral delivery of aciclovir in hard hydroxypropylmethyl cellulose (HPMC) capsules. Six self-dispersing systems (SD1-SD6) were prepared by loading aciclovir into the semisolid formulations consisting of medium chain length triglycerides (lipid), macrogolglycerol hydroxystearate (surfactant), polyglyceryl-3-dioleate (cosurfactant), glycerol (hydrophilic cosolvent), and macrogol 8000 (viscosity modifier). Their characterization was performed in order to identify the semisolid system with rheological behaviour suitable for filling in hard HPMC capsules and fast dispersibility in acidic and alkaline aqueous media with formation of oil-in-water microemulsions...
June 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28618658/the-impact-of-multiple-stressors-on-the-biomarkers-response-in-gills-and-liver-of-freshwater-breams-during-different-seasons
#13
Jovana Kostić, Stoimir Kolarević, Margareta Kračun-Kolarević, Mustafa Aborgiba, Zoran Gačić, Momir Paunović, Željka Višnjić-Jeftić, Božidar Rašković, Vesna Poleksić, Mirjana Lenhardt, Branka Vuković-Gačić
Biomarkers attract increasing attention in environmental studies, as a tool for detection of exposure and effects of pollution, from both natural and anthropogenic sources. This study aims to assess the impact of multiple stressors during distinctive seasons, covering also extreme hydrological events (extensive flooding in the mid May 2014), on different levels of biological organization in the liver and gills of three closely related freshwater breams. Our previous study on DNA damage in blood cells of these specimens showed increased DNA damage in June 2014, one month after the flooding event...
June 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28618573/%C3%AE-cyclodextrin-polymer-binding-to-dna-modulating-the-physicochemical-parameters
#14
J C B Rocha, E F Silva, M F Oliveira, F B Sousa, A V N C Teixeira, M S Rocha
Cyclodextrins and cyclodextrins-modified molecules have interesting and appealing properties due to their capacity to host components that are normally insoluble or poorly soluble in water. In this work, we investigate the interaction of a β-cyclodextrin polymer (poly-β-CD) with λ-DNA. The polymers are obtained by the reaction of β-CD with epichlorohydrin in alkaline conditions. We have used optical tweezers to characterize the changes of the mechanical properties of DNA molecules by increasing the concentration of poly-β-CD in the sample...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28618279/analyzing-the-impacts-of-three-types-of-biochar-on-soil-carbon-fractions-and-physiochemical-properties-in-a-corn-soybean-rotation
#15
Saroop S Sandhu, David A N Ussiri, Sandeep Kumar, Rajesh Chintala, Sharon K Papiernik, Douglas D Malo, Thomas E Schumacher
Biochar is a solid material obtained when biomass is thermochemically converted in an oxygen-limited environment. In most previous studies, the impacts of biochar on soil properties and organic carbon (C) were investigated under controlled conditions, mainly laboratory incubation or greenhouse studies. This 2-year field study was conducted to evaluate the influence of biochar on selected soil physical and chemical properties and carbon and nitrogen fractions for two selected soil types (clay loam and a sandy loam soil) under a corn (Zea mays L...
May 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/28616961/na0-86co0-95fe0-05o2-layered-oxide-as-highly-efficient-water-oxidation-electrocatalyst-in-alkaline-media
#16
Jie Dai, Yinlong Zhu, Yubo Chen, Wei Zhou, Zongping Shao
Electrochemical energy storage and conversion technologies, such as water-splitting devices, rechargeable metal-air batteries, and regenerative fuel cells, are promising alternatives to traditional nonrenewable energy systems. Given the sluggish oxygen evolution reaction (OER) in the above renewable-energy technologies, the development of efficient OER electrocatalysts with high performance is of great importance. Here, we demonstrate a layer-structured oxide Na0.86Co0.95Fe0.05O2 (NCF0.05) as a novel electrocatalyst for efficient water oxidation in alkaline media...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28614745/a-novel-fe-ii-citrate-uv-peroxymonosulfate-process-for-micropollutant-degradation-optimization-by-response-surface-methodology-and-effects-of-water-matrices
#17
Li Ling, Dapeng Zhang, Jingyun Fang, Chihhao Fan, Chii Shang
This paper applied the response surface methodology (RSM) to optimizing a novel Fe(II)/citrate/UV/PMS process in the degradation of a model micropollutant, carbamazepine (CBZ), a persistent emerging contaminant frequently detected in surface water and groundwater. The experimental conditions in terms of two responses, CBZ removal efficiency (Y1) and cost per unit CBZ removal (Y2), were optimized by the central composite design (CCD) in RSM. Modeling data exhibited that the optimum condition resulting in the lowest Y2 while achieving >70% of Y1 was at a UV dose of 265...
June 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28612495/graphdiyne-supported-nico2-s4-nanowires-a-highly-active-and-stable-3d-bifunctional-electrode-material
#18
Yurui Xue, Zicheng Zuo, Yongjun Li, Huibiao Liu, Yuliang Li
The oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting are major energy and chemical conversion efforts. Progress in electrocatalytic reactions have shown that the future is limitless in many fields. However, it is urgent to develop efficient electrocatalysts. Here, the first graphdiyne-supported efficient and bifunctional electrocatalyst is reported using 3D graphdiyne foam as scaffolds, and NiCo2 S4 nanowires as building blocks (NiCo2 S4 NW/GDF). NiCo2 S4 NW/GDF exhibits outstanding catalytic activity and stability toward both OER and HER, as well as overall water splitting in alkaline media...
June 14, 2017: Small
https://www.readbyqxmd.com/read/28612312/chemical-and-microbial-characteristics-of-municipal-drinking-water-supply-systems-in-the-canadian-arctic
#19
Kiley Daley, Lisbeth Truelstrup Hansen, Rob C Jamieson, Jenny L Hayward, Greg S Piorkowski, Wendy Krkosek, Graham A Gagnon, Heather Castleden, Kristen MacNeil, Joanna Poltarowicz, Emmalina Corriveau, Amy Jackson, Justine Lywood, Yannan Huang
Drinking water in the vast Arctic Canadian territory of Nunavut is sourced from surface water lakes or rivers and transferred to man-made or natural reservoirs. The raw water is at a minimum treated by chlorination and distributed to customers either by trucks delivering to a water storage tank inside buildings or through a piped distribution system. The objective of this study was to characterize the chemical and microbial drinking water quality from source to tap in three hamlets (Coral Harbour, Pond Inlet and Pangnirtung-each has a population of <2000) on trucked service, and in Iqaluit (population ~6700), which uses a combination of trucked and piped water conveyance...
June 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28609727/enhancing-the-soil-heavy-metals-removal-efficiency-by-adding-hpma-and-pbtca-along-with-plant-washing-agents
#20
Yaru Cao, Shirong Zhang, Guiyin Wang, Ting Li, Xiaoxun Xu, Ouping Deng, Yanzong Zhang, Yulin Pu
Plant washing agents-water-extracted from Coriaria nepalensis (CN), Clematis brevicaudata (CB), Pistacia weinmannifolia (PW) and Ricinus communis (RC)-are feasible and eco-friendly for soil heavy metal removal, but their single application has limited removal efficiency. To improve their metal removal efficiencies, two biodegradable assistant agents, hydrolytic polymaleic anhydride (HPMA) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), were investigated in combination with plant washing agents through batch soil washing experiments...
June 10, 2017: Journal of Hazardous Materials
keyword
keyword
72429
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"