keyword
https://read.qxmd.com/read/38520995/spatial-and-temporal-distribution-of-physicochemical-parameters-of-water-in-gorgan-bay-the-southeast-of-the-caspian-sea-iran-fundamentals-for-the-monitoring-of-the-caspian-sea-coastal-areas
#21
JOURNAL ARTICLE
Parisa Maleki, Patimar Rahman, Hojatollah Jafaryan, Abdolrassoul Salmanmahiny, Rasoul Ghorbani, Mohammad Gholizadeh, Mohammad Harsij
Gorgan Bay as a main part of the Miankaleh (a natural biosphere reserve registered by UNESCO) is one of the richest ecological area in the West Asia and very important internationally recognized refuge for the wildlife. To date, multi physicochemical parameters have not been examined on a large scale. To fill this knowledge gap, the present study aimed to explore the seasonal and spatial variability of water quality parameters of the bay. The results showed that except for depth and transparency, there are significant variations in most parameters across the four seasons...
March 22, 2024: Marine Pollution Bulletin
https://read.qxmd.com/read/38520930/tuning-polar-discrimination-between-side-chains-to-improve-the-performance-of-anion-exchange-membranes
#22
JOURNAL ARTICLE
Wei Ting Gao, Xue Lang Gao, Qiu Gen Zhang, Ai Mei Zhu, Qing Lin Liu
Anion exchange membranes (AEMs) are the heart of alkaline fuel cells and water electrolysis, and have made a great progress in recent years. However, AEMs are still unable to satisfy the needs of high conductivity and stability, hindering their widespread commercialization. Side chain regulations have been widely used to prepare highly conductive and durable AEMs. Here, we construct a series of polyaromatic AEMs grafted with fluorinated cation side chains and cation-free alkyl chains with different end groups to explore the polar discrimination of side chains on membrane performance...
March 19, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38520855/multi-year-in-situ-hydrogeochemical-monitoring-of-hard-rock-lithium-mine-tailings-in-a-large-scale-experimental-pile
#23
JOURNAL ARTICLE
Tomy Roy, Benoît Plante, Isabelle Demers, Mostafa Benzaazoua, Denis Isabel
Spodumene, a lithian mineral found in granitic pegmatites, is a major source of lithium. In situ, multi-year and large-scale (>10s of tons) predictive hydrogeochemical studies can be of great value for informing mine waste rock and tailings management, not least because the material is exposed to the actual climate where it is meant to be stored. However, such studies are rare given their cost and size, and previous ones have focused mainly on sulfide-bearing materials. An experimental field cell filled with spodumene beneficiation tailings was built at the Whabouchi lithium mine site in northern Québec (Canada) and monitored during four consecutive years...
March 22, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38520706/improving-osseointegration-and-antimicrobial-properties-of-titanium-implants-with-black-phosphorus-nanosheets-hydroxyapatite-composite-coatings-for-vascularized-bone-regeneration
#24
JOURNAL ARTICLE
Shilong Ma, Ruize Sun, Yuhui Wang, Yan Wei, Haofeng Xu, Xuanyu Liu, Ziwei Liang, Liqin Zhao, Yinchun Hu, Xiaojie Lian, Meiqing Guo, Di Huang
For decades, titanium implants have shown impressive advantages in bone repair. However, the preparation of implants with excellent antimicrobial properties as well as better osseointegration ability remains difficult for clinical application. In this study, black phosphorus nanosheets (BPNSs) were doped into hydroxyapatite (HA) coatings using electrophoretic deposition. The coatings' surface morphology, roughness, water contact angle, photothermal properties, and antibacterial properties were investigated...
April 2024: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://read.qxmd.com/read/38518760/engineering-metallic-alloy-electrode-for-robust-and-active-water-electrocatalysis-with-large-current-density-exceeding-2000%C3%A2-ma-cm-2
#25
JOURNAL ARTICLE
Adeela Nairan, Zhuo Feng, Ruiming Zheng, Usman Khan, Junkuo Gao
The amelioration of brilliantly effective electrocatalysts working at high current density for the oxygen evolution reaction (OER) is imperative for cost-efficient electrochemical hydrogen production. Yet, the kinetically sluggish and unstable catalysts remain elusive to large-scale H2 generation for industrial applications. Herein, we demonstrate a new strategy to significantly enhance the intrinsic activity of Ni1-x Fex nanochain arrays through a trace proportion of heteroatom phosphorus doping that permits robust water splitting at an extremely large current density of 1000 and 2000 mA cm-2 for 760 h...
March 22, 2024: Advanced Materials
https://read.qxmd.com/read/38517093/bifunctional-electrocatalysts-for-overall-and-hybrid-water-splitting
#26
REVIEW
Li Quan, Hui Jiang, Guoliang Mei, Yujie Sun, Bo You
Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts for the two half-reactions of water splitting (e.g., the hydrogen and oxygen evolution reactions, HER and OER) separately, there has been a growing interest in designing and developing bifunctional electrocatalysts, which are able to catalyze both the HER and OER. In addition, considering the high overpotentials required for OER while limited value of the produced oxygen, there is another rapidly growing interest in exploring alternative oxidation reactions to replace OER for hybrid water splitting toward energy-efficient hydrogen generation...
March 22, 2024: Chemical Reviews
https://read.qxmd.com/read/38513648/cytosolic-ph-is-a-direct-nexus-in-linking-environmental-cues-with-insulin-processing-and-secretion-in-pancreatic-%C3%AE-cells
#27
JOURNAL ARTICLE
Yujiang Fang, Hexi Feng, Bowen Zhang, Shuwei Zhang, Yanjie Zhou, Pengcheng Hao, Zhongshu Zhou, Shanshan Zhou, Nan Li, Yi Hui, Lin Ma, Jie Xiong, Jinjin Wu, Ling Liu, Xiaoqing Zhang
Pancreatic β cells actively respond to glucose fluctuations through regulating insulin processing and secretion. However, how this process is elaborately tuned in circumstance of variable microenvironments as well as β cell-intrinsic states and whether its dysfunction links to metabolic diseases remain largely elusive. Here, we show that the cytosolic pH (pHc) in β cells is increased upon glucose challenge, which can be sensed by Smad5 via its nucleocytoplasmic shuttling. Lesion of Smad5 in β cells results in hyperglycemia and glucose intolerance due to insulin processing and secretion deficiency...
March 15, 2024: Cell Metabolism
https://read.qxmd.com/read/38512577/assessment-of-the-properties-of-concrete-containing-artificial-green-geopolymer-aggregates-by-cold-bonding-pelletization-process
#28
JOURNAL ARTICLE
Taher A Tawfik, Alaa Hussein Kamal, Ahmed Serag Faried
Recently, the usage of a cold-bonded method in the production of artificial green geopolymer coarse aggregates (GCA) has been crucial from an economic and environmental perspective because the sintering method consumes an enormous quantity of energy and generates a significant quantity of pollutants. This research investigated the manufacture of GCA via cold-bonded pelletization using two distinct industrial byproducts (GGBFS and FA) via a new and simpler pelletization technology. Three different binders were used to produce three distinct types of GCAs as partial replacements for natural coarse aggregate (NCA) at varying replacement rates (0%, 25%, 50%, and 75%)...
March 21, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38512122/hydrogen-evolution-in-neutral-media-by-differential-intermediate-binding-at-charge-modulated-sites-of-a-bimetallic-alloy-electrocatalyst
#29
JOURNAL ARTICLE
Mamoni Maji, Supriti Dutta, Rohan Jena, Anupam Dey, Tapas Kumar Maji, Swapan K Pati, Sayan Bhattacharyya
The energy barrier to dissociate neutral water has been lowered by the differential intermediate binding on the charge-modulated metal centers of Co85Mo15 sheets supported on Ni-foam (NF), where the overpotential for hydrogen evolution reaction (HER) in 1M phosphate buffer solution (PBS) is only 50 ± 9 mV at -10 mA cm-2. It has a turnover frequency (TOF) of 0.18 s-1, mass activity of 13.2 A g-1 at -200 mV vs. reversible hydrogen electrode (RHE), and produces 16 ml H2 h-1 at -300 mV vs. RHE, more than double that of 20% Pt/C...
March 21, 2024: Angewandte Chemie
https://read.qxmd.com/read/38507721/titanium-dioxide-and-n-doped-carbon-hybrid-nanofiber-modulated-ru-nanoclusters-for-high-efficient-hydrogen-evolution-reaction-electrocatalyst
#30
JOURNAL ARTICLE
Chenxi Zhang, Honghua Song, Zhichong Wang, Qing Ye, Dan Zhang, Yanxia Zhao, Jiani Ma, Yongliang Cheng
The designing and fabricating highly active hydrogen evolution reaction (HER) electrocatalysts that can superior to Pt/C is extremely desirable but challenging. Herein, the fabrication of Ru/TiO2 /N-doped carbon (Ru/TiO2 /NC) nanofiber is reported as a novel and highly active HER electrocatalyst through electrospinning and subsequent pyrolysis treatment, in which Ru nanoclusters are dispersed into TiO2 /NC hybrid nanofiber. As a novel support, experimental and theoretical calculation results reveal that TiO2 /NC can more effectively accelerate water dissociation as well as optimize the adsorption strength of * H than TiO2 and NC, thus leading to a significantly enhanced HER activity, which merely requires an overpotential of 18 mV to reach 10 mA cm-2 , outperforming Pt/C in an alkaline solution...
March 20, 2024: Small
https://read.qxmd.com/read/38507568/enhancement-of-nutrient-composition-and-non-volatile-flavor-substances-in-muscle-tissue-of-red-drum-sciaenops-ocellatus-through-inland-low-salinity-saline-alkaline-water-culture
#31
JOURNAL ARTICLE
Xiaosong Jiang, Mingming Niu, Kangxiang Qin, Yun Hu, Yuntao Li, Chenxi Che, Chunlin Wang, Changkao Mu, Huan Wang
The red drum ( Sciaenops ocellatus ), a globally significant marine aquaculture species, boasts formidable osmoregulatory capabilities and remarkable adaptability to low salinity, making it an ideal candidate for commercial cultivation in inland low salinity saline-alkaline waters. However, studies on the fundamental nutritional composition and flavor quality of S. ocellatus in these inland low salinity saline-alkaline waters remain unreported. This study delves into the impact of inland low salinity saline-alkaline environments on the basic nutritional components and nonvolatile flavor substances (including free amino acids and free nucleotides) in the muscle tissue of S...
March 20, 2024: Journal of Agricultural and Food Chemistry
https://read.qxmd.com/read/38504451/carbon-and-nitrogen-isotope-fractionations-during-biotic-and-abiotic-transformations-of-2-4-dinitroanisole-dnan
#32
JOURNAL ARTICLE
Chunlei Wang, Mark E Fuller, Jimmy Murillo-Gelvez, Rachael T Rezes, Paul B Hatzinger, Pei C Chiu, Linnea J Heraty, Neil C Sturchio
2,4-Dinitroanisole (DNAN) is a main constituent in various new insensitive munition formulations. Although DNAN is susceptible to biotic and abiotic transformations, in many environmental instances, transformation mechanisms are difficult to resolve, distinguish, or apportion on the basis solely of analysis of concentrations. We used compound-specific isotope analysis (CSIA) to investigate the characteristic isotope fractionations of the biotic (by three microbial consortia and three pure cultures) and abiotic (by 9,10-anthrahydroquinone-2-sulfonic acid [AHQS]) transformations of DNAN...
March 19, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38503691/laser-induced-preparation-of-anderson-type-polyoxometalate-derived-sulfide-oxide-electrocatalysts-for-electrochemical-water-oxidation
#33
JOURNAL ARTICLE
Yu-Jia Tang, Man Jin, Yan Zou, Bo-Cong Shi, Ting-Ting Liu
Developing cost-effective and high-active electrocatalysts is vital to enhance the electrocatalytic performance for oxygen evolution reaction (OER). However, traditional pyrolysis methods require complicated procedures, exact temperatures, and long reaction times, leading to high costs and low yields of electrocatalysts in potential industrial applications. Herein, a rapid and economic laser-induced preparation strategy is proposed to synthesize three bimetallic sulfide/oxide composites (MMoOS, M = Fe, Co, and Ni) on a nickel foam (NF) substrate...
March 19, 2024: ChemSusChem
https://read.qxmd.com/read/38503231/influence-of-elevated-temperature-on-the-species-and-mobility-of-chromium-in-ferrous-sulfate-amended-contaminated-soil
#34
JOURNAL ARTICLE
Ruolin Zhao, Xinqing Zhang, Yiwen Zhou, Jining Li, Binglin Guo, Keishi Oyama, Chiharu Tokoro
Ferrous sulfate (FeSO4 ) combined with acid pretreatment is usually employed to remediate contaminated soils containing Cr(VI). However, the long-term efficiency of this stabilization method is important for its sustainability. In this study, a gradient temperature-elevating exposure test was employed to investigate the stability of Cr in FeSO4 -remediated soil when exposed to elevated temperatures (40 °C, 120 °C, and 500 °C), possibly caused by hot weather and/or wildfires. The results of chemical extraction and X-ray absorption near edge structure spectroscopy (XANES) showed that the Cr(VI) in contaminated soil was successfully transformed to Cr(III) after stabilization, resulting in the dramatic decrease of water-leachable Cr(VI)...
March 18, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38503120/ultra-stable-and-highly-bright-cspbbr-3-perovskite-silica-nanocomposites-for-mirna-detection-based-on-digital-single-nanoparticle-counting
#35
JOURNAL ARTICLE
Jiajun Zhong, Minghao Ge, Tongxu Gu, Tong Wang, Zhizhou Liu, Pengli Bai
Single-nanoparticle counting (SNPC) based on fluorescent tag (FT) stands out for its capacity to achieve amplification-free and sensitive detection of biomarkers. The stability and luminescence of FT are important to the sensitivity and reliability of SPNC. In this work, we developed novel perovskite/silica nanocomposites by in-situ nanoconfined growth of CsPbBr3 nanocrystals inside mesoporous structure of silica nanoparticles. PbBr(OH) was formed in an alkaline-assisted reaction triggered by water on the surface of CsPbBr3 nanocrystals...
March 16, 2024: Talanta
https://read.qxmd.com/read/38503066/insight-into-the-solubilization-mechanism-of-wheat-gluten-by-protease-modification-from-conformational-change-and-molecular-interaction-perspective
#36
JOURNAL ARTICLE
Weixiao Li, Qianxin Zhou, Jianxia Xu, Shanlong Zhu, Sixu Lv, Zhenyu Yu, Yin Yang, Yingnan Liu, Yibin Zhou, Xiaonan Sui, Qiang Zhang, Yaqing Xiao
The low solubility limits the utilization of other functional characteristics of wheat gluten (WG). This study effectively improved the solubility of WG through protease modification and explored the potential mechanism of protease modification to enhance the solubility of WG, further stimulating the potential application of WG in the food industry. Solubility of WG modified with alkaline protease, complex protease, and neutral protease was enhanced by 98.99%, 54.59%, and 51.68%, respectively. Notably, the content of β-sheet was reduced while the combined effect of hydrogen bond and ionic bond were increased after protease modification...
March 16, 2024: Food Chemistry
https://read.qxmd.com/read/38502793/asparagine-glucose-amadori-compounds-formation-characterization-and-analysis-in-dry-jujube-fruit
#37
JOURNAL ARTICLE
Qing Xiao, Qingrong Huang, Chi-Tang Ho
Amadori rearrangement products of asparagine with glucose (Asn-Glc-ARP) were first prepared through Maillard model reactions and identified via liquid chromatography-mass spectroscopy. With the study on the effect of the reaction temperature, pH values, and reaction time, the ideal reaction condition for accumulation of Asn-Glc-ARP was determined at 100 °C for 40 min under pH 7. Asparagine (Asn) was prone to degrade from Asn-Glc-ARP in alkaline pH values within a lower temperature range, while in an acidic environment with high temperatures, deamidation of Asn-Glc-ARP to Asp-Glc-ARP (Amadori rearrangement products of aspartic acid with glucose) was displayed as the dominant pathway...
March 19, 2024: Journal of Agricultural and Food Chemistry
https://read.qxmd.com/read/38502200/a-facile-n-doped-nife-b-oxy-hydroxide-monolithic-electrode-for-enhanced-water-oxidation
#38
JOURNAL ARTICLE
Yushu Li, Huizhen Han, Xiuhang Wang, Yu Sun, Yulian Zhao, Shiyi Tao, Aoxing Duan, Yi Ma, Xin Bo, Zenglin Wang
N-doped NiFe(B) (oxy)hydroxide can promote the catalytic activity for an alkaline oxygen evolution reaction (OER) significantly, but fabrication is difficult. Herein, we introduced a B-induction route to the N-NiFe(B) (oxy)hydroxide monolithic electrode under a relatively low temperature. We observed an excellent catalytic performance benefiting from an optimal electronic structure, enlarged surface area and improved hydrophilicity. Moreover, this mild protocol could be extended to fabricate an S-doped NiFe-based catalyst...
March 19, 2024: Chemical Communications: Chem Comm
https://read.qxmd.com/read/38501852/stable%C3%A2-anion-exchange-membrane-bearing-quinuclidinium-for-high-performance-water-electrolysis
#39
JOURNAL ARTICLE
Liqiang Yin, Rong Ren, Lanlan He, Wentao Zheng, Yu Guo, Linqin Wang, Husileng Lee, Jian Du, Zhiheng Li, Tang Tang, Guoheng Ding, Licheng Sun
Anion exchange membranes (AEMs) are core components in anion exchange membrane water electrolyzers (AEM-WEs). However, the stability of functional quaternary ammonium cations, especially under high temperatures and harsh alkaline conditions, seriously affects their performance and durability. Herein, we synthesized a 1-methyl-3,3-diphenylquinuclidinium molecular building unit. Density functional theory (DFT) calculations and accelerated aging analysis indicated that the quinine ring structure was exceedingly stable, and the SN2 degradation mechanism dominated...
March 19, 2024: Angewandte Chemie
https://read.qxmd.com/read/38499095/comparison-of-acidity-and-chemical-composition-of-summertime-cloud-water-and-aerosol-at-an-alpine-site-in-northwest-china-implications-for-the-neutral-property-of-clouds-in-the-free-troposphere
#40
JOURNAL ARTICLE
Minxia Shen, Jianjun Li, Yali Liu, Wenting Dai, Gehui Wang, Weining Qi, Yukun Chen, Xiao Guo, Yifan Zhang, Lu Li, Yue Cao, Qiao Feng, Hui Su, Junji Cao
Aerosol and cloud acidity are essential to human health, ecosystem health and productivity, as well as climate effects. The main chemical composition of cloud water greatly varies in different regions, resulting in substantial differences in the pH of cloud water. However, the influences of the anthropogenic emissions of acidic gases and substances, alkaline dust components, and dicarboxylic acids (diacids) on the ground concerning the acidity of cloud water in the free troposphere of the Guanzhong Plain, China, remain clear...
March 16, 2024: Science of the Total Environment
keyword
keyword
72429
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

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"

We want to hear from doctors like you!

Take a second to answer a survey question.