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https://www.readbyqxmd.com/read/28216892/antioxidant-and-hepatoprotective-potential-of-phenol-rich-fraction-of-juniperus-communis-linn-leaves
#1
Akash Ved, Amresh Gupta, Ajay Kumar Singh Rawat
BACKGROUND: Juniperus communis Linn. is an important plant in India traditional system of medicine which is widely used by different tribes in many countries. OBJECTIVE: In the present study, the antioxidant, cytotoxic and hepatoprotective activities of Juniperus communis leaves were investigated against various models. MATERIALS AND METHODS: ethanolic extract (70% v/v) of J. communis leaves was successively extracted using hexane and ethyl acetate to prepare various fractions...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28151582/perovskite-carbon-composites-applications-in-oxygen-electrocatalysis
#2
REVIEW
Yinlong Zhu, Wei Zhou, Zongping Shao
Oxygen electrocatalysis, i.e., oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), plays an extremely important role in oxygen-based renewable-energy technologies such as rechargeable metal-air batteries, regenerative fuel cells and water splitting. Perovskite oxides have recently attracted increasing interest and hold great promise as efficient ORR and OER catalysts to replace noble-metal-based catalysts, owing to their high intrinsic catalytic activity, abundant variety, low cost, and rich resources...
February 2, 2017: Small
https://www.readbyqxmd.com/read/28117969/bioinspired-cobalt-citrate-metal-organic-framework-as-an-efficient-electrocatalyst-for-water-oxidation
#3
Jing Jiang, Lan Huang, Xiaomin Liu, Lunhong Ai
Efficient and cost-effective oxygen evolution reaction (OER) electrocatalysts are closely associated with many important energy conversion technologies. Herein, we first report an oxygen-evolving cobalt-citrate metal-organic framework (MOF, UTSA-16) for highly efficient electrocatalytic water oxidation. Benefiting from synergistic cooperation of intrinsic open porous structure, in situ formed high valent cobalt species, and existing Co4O4 cubane, the UTSA-16 exhibits excellent activity toward OER catalysis in alkaline medium...
February 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27996250/hybrids-of-cobalt-iron-phosphides-derived-from-bimetal-organic-frameworks-as-highly-efficient-electrocatalysts-for-oxygen-evolution-reaction
#4
Ting Zhang, Jing Du, Pinxian Xi, Cailing Xu
The electrochemical splitting of water, as an efficient and large-scale method to produce H2, is still hindered by the sluggish kinetics of the oxygen evolution reaction (OER) at the anode. Considering the synergetic effect of the different metal sites with coordination on the surface of electrocatalysts, the hybrids of Co/Fe phosphides (denoted as Co-Fe-P) is prepared by one-step phosphorization of CoFe metal-organic frameworks for the first time as highly efficient electrocatalysts for OER. Benefiting from the synergistic effect of Co and Fe, the high valence of Co ions induced by strongly electronegative P and N and the large electrochemical active surface area (ECSA) originated from exposed nanowires on the surface of Co/Fe phosphides, the resultant Co-Fe-P-1...
December 20, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27788365/significantly-improving-trace-thallium-removal-from-surface-waters-during-coagulation-enhanced-by-nanosized-manganese-dioxide
#5
Xiaoliu Huangfu, Chengxue Ma, Jun Ma, Qiang He, Chun Yang, Jin Jiang, Yaan Wang, Zhengsong Wu
Thallium (Tl) is an element of high toxicity and significant accumulation in human body. There is an urgent need for the development of appropriate strategies for trace Tl removal in drinking water treatment plants. In this study, the efficiency and mechanism of trace Tl (0.5 μg/L) removal by conventional coagulation enhanced by nanosized manganese dioxide (nMnO2) were explored in simulated water and two representative surface waters (a river water and a reservoir water obtained from Northeast China). Experimental results showed that nMnO2 significantly improve Tl(I) removal from selected waters...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27536529/physiological-responses-to-salinity-increase-in-blood-parrotfish-cichlasoma-synspilum-%C3%A2-%C3%A2-%C3%A3-%C3%A2-cichlasoma-citrinellum-%C3%A2
#6
Yanming Sui, Xizhi Huang, Hui Kong, Weiqun Lu, Youji Wang
This study aims to evaluate the effects of adding salt to water on the physiological parameters of the blood parrot cichlid (Cichlasoma synspilum ♀ × Cichlasoma citrinellum ♂). The blood parrot cichlid is a popular species in the aquarium trade because of its behaviour and beauty. Salt is usually added to water during the culture or transportation of this fish. However, the manner by which the fish adjusts its physiological responses to salinity change is unclear. The effects of salinity on serum osmolality, immune-related enzyme activities, Na(+)-K(+)-ATPase activities in the gill, skin carotenoid content and oxygen consumption were analysed...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27443859/characterization-and-valorization-of-biomass-ashes
#7
Nikhilesh S Trivedi, Sachin A Mandavgane, Sayaji Mehetre, Bhaskar D Kulkarni
In India, farming is the primary source of income for many families. Following each harvest, a huge amount of biomass is generated. These are generally discarded as "agrowaste," but recent reports have indicated several beneficial uses for these biomasses and their ashes. However, before the utilization of biomass ashes (BMAs), their chemical and physical properties need to be investigated (characterized) so as to utilize their potential benefit to the fullest. In this paper, eight different biomass ashes (soybean plant ash, mustard plant ash, maize ash, groundnut plant ash, cotton plant ash, wheat plant ash, pigeon peas ash, and groundnut shell ash) were characterized, and their chemical properties are discussed...
October 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27309389/phase-transformation-engineering-in-cobalt-diselenide-realizing-enhanced-catalytic-activity-for-hydrogen-evolution-in-an-alkaline-medium
#8
Pengzuo Chen, Kun Xu, Shi Tao, Tianpei Zhou, Yun Tong, Hui Ding, Lidong Zhang, Wangsheng Chu, Changzheng Wu, Yi Xie
Phase-transformation engineering is successfully applied in designing an alkaline hydrogen evolution reaction (HER) electrocatalyst. Benefiting from phase-transformation engineering, which endows higher electrical conductivity, ideal water adsorption energy, and faster transformation efficiency of Hads into hydrogen, cubic-phase CoSe2 realizes an enhanced electrocatalytic activity for HER under alkaline conditions.
September 2016: Advanced Materials
https://www.readbyqxmd.com/read/27302068/ammonium-functionalized-hollow-polymer-particles-as-a-ph-responsive-adsorbent-for-selective-removal-of-acid-dye
#9
Yan Qin, Li Wang, Changwen Zhao, Dong Chen, Yuhong Ma, Wantai Yang
In this work, a novel type of ammonium-functionalized hollow polymer particles (HPP-NH3(+)) with a high density of ammonium groups in the shell has been specially designed and synthesized. Benefiting from both the high surface area and from the high density of positively charged ammonium groups, the as-prepared HPP-NH3(+) can serve as a selective adsorbent for the removal of negatively charged acid dye (e.g., methyl blue a-MB). The equilibrium adsorption data of a-MB on the HPP-NH3(+) were evaluated using Freundlich and Langmuir isotherm models, and Langmuir isotherm exhibited a better fit with a maximum adsorption capacity of 406 mg/g...
July 6, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27233098/comparison-of-liquid-hot-water-and-alkaline-pretreatments-of-giant-reed-for-improved-enzymatic-digestibility-and-biogas-energy-production
#10
COMPARATIVE STUDY
Danping Jiang, Xumeng Ge, Quanguo Zhang, Yebo Li
Liquid hot water (LHW) and alkaline pretreatments of giant reed biomass were compared in terms of digestibility, methane production, and cost-benefit efficiency for electricity generation via anaerobic digestion with a combined heat and power system. Compared to LHW pretreatment, alkaline pretreatment retained more of the dry matter in giant reed biomass solids due to less severe conditions. Under their optimal conditions, LHW pretreatment (190°C, 15min) and alkaline pretreatment (20g/L of NaOH, 24h) improved glucose yield from giant reed by more than 2-fold, while only the alkaline pretreatment significantly (p<0...
September 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27089527/health-effects-of-alkaline-diet-and-water-reduction-of-digestive-tract-bacterial-load-and-earthing
#11
Haider Abdul-Lateef Mousa
In the article, the author discusses the issue of chronic, low-grade acidosis that is thought to be brought about primarily by 2 factors: (1) advancing age, with a consequent decline in renal function; and (2) diet. An acid-forming diet can induce low-grade metabolic acidosis, which causes very small decreases in blood pH and plasma bicarbonate (HCO3-) that remain within the range considered to be normal. However, if the duration of the acidosis is prolonged or chronically present, even a low degree of acidosis can become significant...
April 2016: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/27064089/tough-and-multi-responsive-hydrogel-based-on-the-hemicellulose-from-the-spent-liquor-of-viscose-process
#12
Jian Du, Bin Li, Chao Li, Yuedong Zhang, Guang Yu, Haisong Wang, Xindong Mu
The hemicellulose isolated from the spent liquor of a viscose process was successfully utilized to prepare hydrogels by the graft copolymerization of acrylic acid (AA) with hemicellulose. The hemicellulose and prepared hydrogel were characterized by Fourier-transform infrared (FT-IR), scanning electron microscopy (SEM), and solid-state nuclear magnetic resonance ((13)C NMR). Under the optimum preparation conditions, the highest compressive strength and strain at break of the resultant hydrogel were 105.1±12...
July 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27047165/assessment-of-variable-drinking-water-sources-used-in-egypt-on-broiler-health-and-welfare
#13
N ELSaidy, R A Mohamed, F Abouelenien
AIM: This study assessed the impact of four water sources used as drinking water in Egypt for broiler chickens on its performance, carcass characteristic, hematological, and immunological responses. MATERIALS AND METHODS: A total of 204 unsexed 1-day old Indian River broiler chickens were used in this study. They were randomly allocated into four treatment groups of 51 birds in each, with three replicates, 17 birds per replicate. Groups were classified according to water source they had been received into (T1) received farm tap water; (T2) received filtered tap water (T3) received farm stored water at rooftop tanks, (T4) received underground (well) water...
July 2015: Veterinary World
https://www.readbyqxmd.com/read/26987990/superhydrophobic-meshes-that-can-repel-hot-water-and-strong-corrosive-liquids-used-for-efficient-gravity-driven-oil-water-separation
#14
Jian Li, Ruimei Kang, Xiaohua Tang, Houde She, Yaoxia Yang, Fei Zha
Oil-polluted water has become a worldwide problem due to increasing industrial oily wastewater as well as frequent oil-spill pollution. Compared with underwater superoleophobic (water-removing) filtration membranes, superhydrophobic/superoleophilic (oil-removing) materials have advantages as they can be used for the filtration of heavy oil or the absorption of floating oil from water/oil mixtures. However, most of the superhydrophobic materials used for oil/water separation lose their superhydrophobicity when exposed to hot (e...
April 14, 2016: Nanoscale
https://www.readbyqxmd.com/read/26902537/an-organic-indicator-functionalized-graphene-oxide-nanocomposite-based-colorimetric-assay-for-the-detection-of-sarcosine
#15
Zhonghua Xue, Bo Yin, Hui Wang, Mengqian Li, Honghong Rao, Xiuhui Liu, Xinbin Zhou, Xiaoquan Lu
Rapid detection of sarcosine is a key requirement for both diagnosis and treatment of disease. We report here a simple yet sensitive colorimetric nanocomposite platform for rapid detection of sarcosine in alkaline media. The approach exploited the benefits of a rapid color-producing reaction between an organic indicator, 1,2-naphthoquinone-4-sulphonic acid sodium salt (NQS), and the analyte of sarcosine species as well as the good catalytic ability of graphene oxide (GO) to the formation of highly colored products due to its good water dispersibility, extremely large surface area and facile surface modification...
March 14, 2016: Nanoscale
https://www.readbyqxmd.com/read/26783885/integrated-three-dimensional-carbon-paper-carbon-tubes-cobalt-sulfide-sheets-as-an-efficient-electrode-for-overall-water-splitting
#16
Jun Wang, Hai-xia Zhong, Zhong-li Wang, Fan-lu Meng, Xin-bo Zhang
The development of an efficient catalytic electrode toward both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of great significance for overall water splitting associated with the conversion and storage of clean and renewable energy. In this study, carbon paper/carbon tubes/cobalt-sulfide is introduced as an integrated three-dimensional (3D) array electrode for cost-effective and energy-efficient HER and OER in alkaline medium. Impressively, this electrode displays superior performance compared to non-noble metal catalysts reported previously, benefiting from the unique 3D array architecture with increased exposure and accessibility of active sites, improved vectorial electron transport capability, and enhanced release of gaseous products...
February 23, 2016: ACS Nano
https://www.readbyqxmd.com/read/26757358/strong-coupled-cobalt-borate-nanosheets-graphene-hybrid-as-electrocatalyst-for-water-oxidation-under-both-alkaline-and-neutral-conditions
#17
Pengzuo Chen, Kun Xu, Tianpei Zhou, Yun Tong, Junchi Wu, Han Cheng, Xiuli Lu, Hui Ding, Changzheng Wu, Yi Xie
Developing highly active catalysts for the oxygen evolution reaction (OER) is of paramount importance for designing various renewable energy storage and conversion devices. Herein, we report the synthesis of a category of Co-Pi analogue, namely cobalt-based borate (Co-Bi ) ultrathin nanosheets/graphene hybrid by a room-temperature synthesis approach. Benefiting from the high surface active sites exposure yield, enhanced electron transfer capacity, and strong synergetic coupled effect, this Co-Bi NS/G hybrid shows high catalytic activity with current density of 10 mA cm(-2) at overpotential of 290 mV and Tafel slope of 53 mV dec(-1) in alkaline medium...
February 12, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/26717694/-a-comparative-study-on-two-membrane-bioreactors-for-the-treatment-of-digested-piggery-wastewater
#18
COMPARATIVE STUDY
Yong Shui, Tomoki Kawagishi, Xiao-yan Song, Rui Liu, Lü-jun Chen
With high concentrations of chemical oxygen demand (COD) and ammonium while low ratio of COD to total nitrogen (TN), digested piggery wastewater is difficult to treat using conventional biological methods. In this study, a biofilm membrane bioreactor (BF-MBR) and a traditional type of membrane bioreactor (MBR) were parallel operated to treat digested piggery wastewater, and the pollutant removal performance were compared at influent COD/TN ratios of 1. 0 ± 0. 2 and 2. 3 ± 0. 4, respectively. The results showed that the effluent quality in both reactors was poor and unstable when the influent COD/TN ratio was 1...
September 2015: Huan Jing Ke Xue= Huanjing Kexue
https://www.readbyqxmd.com/read/26640536/assessment-of-the-potential-health-benefits-of-certain-total-extracts-from-vitis-vinifera-aesculus-hyppocastanum-and-curcuma-longa
#19
Denisa Margină, Octavian Tudorel Olaru, Mihaela Ilie, Daniela Grădinaru, Claudia GuȚu, Sorina Voicu, Anca Dinischiotu, Demetrios A Spandidos, Aristidis M Tsatsakis
A number of recent studies have illustrated the active role of food/natural components in the prevention of chronic diseases and in the improvement of the quality of life. In the present study, we aimed to obtain and characterize certain extracts from Vitis vinifera L., Aesculus hippocastanum L. and Curcuma longa L., focusing on their antioxidant effects in vitro. Three vegetal extracts were obtained for each plant: in water, 50% water-alcohol and in 96% ethanol. These extracts were then analyzed for their qualitative composition by high performance thin layer chromatography (HPTLC) and total phenolic content by ultraviolet-visible spectrophotometry (UV-VIS)...
November 2015: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/26304451/effect-of-alkaline-cooking-of-maize-on-the-content-of-fumonisins-b1-and-b2-and-their-hydrolysed-forms
#20
A De Girolamo, V M T Lattanzio, R Schena, A Visconti, M Pascale
The effect of nixtamalization on the content of fumonisins (FBs), hydrolysed (HFBs) and partially hydrolysed (PHFBs) fumonisins in maize was investigated at laboratory-scale. Maize naturally contaminated with FBs and PHFBs was cooked with lime. Starting raw maize, steeping and washing waters and final masa fractions were analysed for toxin content. Control-cooking experiments without lime were also carried out. The nixtamalization reduced the amount of FBs and PHFBs in masa and converted them to HFBs. However, the three forms of fumonisins collected in all fractions amounted to 183%, indicating that nixtamalization made available forms of matrix-associated fumonisins that were then converted to their hydrolysed forms...
February 1, 2016: Food Chemistry
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