366,694 results match your criteria synthesis water


Effects of dietary nicotinic acid supplementation on meat quality, carcass characteristics, lipid metabolism, and tibia parameters of Wulong geese.

Poult Sci 2021 Aug 14;100(11):101430. Epub 2021 Aug 14.

College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China. Electronic address:

The purpose of this study was to evaluate the effects of nicotinic acid (NA) supplementation on the meat quality, carcass characteristics, lipid metabolism, and tibia parameters in Wulong geese. A total of 360 twenty-nine-day-old Wulong geese were randomly divided into 6 treatments, and each treatment included 6 pens with 10 birds per pen. Birds were fed a basal diet supplemented with 0, 20, 40, 60, 80, or 100 mg/kg NA for 12 wk. Read More

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Increased fidelity of protein synthesis extends lifespan.

Cell Metab 2021 Sep 8. Epub 2021 Sep 8.

UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street, London WC1E 6DD, UK; Department of Medical Physics and Biomedical Engineering, University College London, Malet Place Engineering Building, Gower Street, London WC1E 6BT, UK. Electronic address:

Loss of proteostasis is a fundamental process driving aging. Proteostasis is affected by the accuracy of translation, yet the physiological consequence of having fewer protein synthesis errors during multi-cellular organismal aging is poorly understood. Our phylogenetic analysis of RPS23, a key protein in the ribosomal decoding center, uncovered a lysine residue almost universally conserved across all domains of life, which is replaced by an arginine in a small number of hyperthermophilic archaea. Read More

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September 2021

Toward the Proactive Design of Sustainable Chemicals: Ionic Liquids as a Prime Example.

Chem Rev 2021 Sep 15. Epub 2021 Sep 15.

Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany.

The tailorable and often unique properties of ionic liquids (ILs) drive their implementation into a broad variety of seminal technologies. The modular design of ILs allows in this context a proactive selection of structures that favor environmental sustainability-ideally without compromising their technological performance. To achieve this objective, the whole life cycle must be taken into account and various aspects considered simultaneously. Read More

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September 2021

[The impact of climate change on health in the Netherlands: the latest insights].

Ned Tijdschr Geneeskd 2021 Sep 1;165. Epub 2021 Sep 1.

International Network on Children's Health, Environment and Safety.

This synthesis provides the latest insights into the impact of climate change in the Netherlands for which five separate health effects are particularly relevant. Climate change is associated with increased frequency, intensity and duration of heat waves. Major heat-related health risks include heat stroke, exacerbations of renal dysfunction due to dehydration and cardiovascular disease due to overheating. Read More

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September 2021

NocU is a cytochrome P450 oxygenase catalyzing -hydroxylation of the indolic moiety during the maturation of the thiopeptide antibiotics nocathiacins.

Org Biomol Chem 2021 Sep 15. Epub 2021 Sep 15.

State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence on Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.

The ribosomally synthesized and post-translationally modified peptide (RiPP) natural products include the family of thiopeptide antibiotics, where nocathiacins (NOCs) and nosiheptide (NOS) are structurally related bicyclic members featuring an indolic moiety within the side ring system. Compared with NOS, NOCs bear additional functionalities that lead to the improvement of water solubility and bioavailability, a problem inherent to most of the thiopeptide antibiotics, and thus hold potential for clinical use in anti-infective agent development. The process through which post-translational modifications (PTMs) occur to afford these functionalities remains unclear. Read More

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September 2021

Effective restoration of partial nitritation and anammox biofilm process by short-term hydroxylamine dosing: Mechanism and microbial interaction.

Bioresour Technol 2021 Sep 8;341:125910. Epub 2021 Sep 8.

School of Civil Engineering, Chang'an University, Xi'an 710064, Shaanxi, China.

The one-stage partial nitritation and anammox (PN-A) process frequently experiences deterioration from ammonium accumulation and nitrate build-up. In this study, hydroxylamine was dosed to restore the process from deterioration in a continuously aerated PN-A sequencing biofilm batch reactor, and the impact of hydroxylamine on the metabolism of PN-A process was studied. PN-A process was totally restored in 5 days via 10 mg N·L hydroxylamine dosing, reducing nitrate-produced/ammonium-removed ratio from 28. Read More

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September 2021

Molecular biomarkers as tool for early warning by chlorpyrifos exposure on Alpine chironomids.

Environ Pollut 2021 Aug 26;290:118061. Epub 2021 Aug 26.

Department of Invertebrate Zoology and Hydrobiology, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza 3, I-38122, Trento, Italy.

Pesticides used in agriculture can be transported at a medium-high distance due to the drift effect, reaching even remote areas as mountain regions, glaciers, and snow cover. With the melting process, pesticides enter freshwater glacier ecosystems, becoming a threat to wildlife fauna, mainly dominated by Diptera Chironomidae. Chlorpyrifos (CPF), as one of the most commonly used pesticides in alpine vineyards and apple orchards, is frequently detected in icemelt waters. Read More

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Engineered macroalgal and microalgal adsorbents: Synthesis routes and adsorptive performance on hazardous water contaminants.

J Hazard Mater 2021 Aug 16;423(Pt A):126921. Epub 2021 Aug 16.

Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.

Colourants, micropollutants and heavy metals are regarded as the most notorious hazardous contaminants found in rivers, oceans and sewage treatment plants, with detrimental impacts on human health and environment. In recent development, algal biomass showed great potential for the synthesis of engineered algal adsorbents suitable for the adsorptive management of various pollutants. This review presents comprehensive investigations on the engineered synthesis routes focusing mainly on mechanical, thermochemical and activation processes to produce algal adsorbents. Read More

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Synthesis of nano-crystalline zeolite-A and zeolite-X from Indian coal fly ash, its characterization and performance evaluation for the removal of Cs and Sr from simulated nuclear waste.

J Hazard Mater 2021 Sep 1;423(Pt A):127085. Epub 2021 Sep 1.

Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India; Materials Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group, IndiraGandhi Centre for Atomic Research, Kalpakkam 603102, India. Electronic address:

Phase pure zeolite-A and zeolite-X were synthesized using coal fly ash (CFA) obtained from Indian thermal power plants by employing alkali fusion method followed by hydrothermal technique. The fusion of fly ash with NaCO was accomplished by heating at 800 °C/2 h by maintaining fly ash to NaCO ratio at 1.2. Read More

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September 2021

Layered double hydroxide-modified membranes for water treatment: Recent advances and prospects.

Chemosphere 2021 Sep 1;287(Pt 1):132140. Epub 2021 Sep 1.

Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.

Layered double hydroxides (LDHs) represent an exciting class of two-dimensional inorganic materials with unique physicochemical properties. They have been widely employed in water treatment due to their high surface areas, excellent ion exchange capacities, and highly tunable structures. They have also been employed in the fabrication and development of membranes for water treatment. Read More

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September 2021

Drought affects carbon partitioning into volatile organic compound (VOC) biosynthesis in Scots pine needles.

New Phytol 2021 Sep 15. Epub 2021 Sep 15.

Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, 79110, Freiburg, Germany.

The effect of drought on the interplay of processes controlling carbon partitioning into plant primary and secondary metabolisms such as respiratory CO release and volatile organic compound (VOC) biosynthesis, is not fully understood. To elucidate the effect of drought on the fate of cellular C-sources into VOCs vs. CO , we conducted tracer experiments with CO and position-specific C-labeled pyruvate, a key metabolite between primary and secondary metabolisms, in Scots pine seedlings. Read More

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September 2021

analysis of novel dipeptidyl peptidase-IV inhibitory peptides released from antimicrobial protein 2 (MiAMP2) and the possible pathways involved in diabetes protection.

Curr Res Food Sci 2021 2;4:603-611. Epub 2021 Sep 2.

Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.

The aim of the present study was to screen novel dipeptidyl peptidase IV (DPP-IV) inhibitory peptides from antimicrobial protein 2 (MiAMP2) and evaluate the potential antidiabetic targets and involved signaling pathways using approaches. digestion of MiAMP2 with pepsin, trypsin and chymotrypsin was performed with ExPASy PeptideCutter and the generated peptides were subjected to BIOPEP-UWM, iDrug, INNOVAGEN and Autodock Vina for further analyses. Six novel peptides EQVR, EQVK, AESE, EEDNK, EECK, and EVEE were predicted to possess good DPP-IV inhibitory potentials, water solubility, and absorption, distribution, metabolism, excretion, and toxicity properties. Read More

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September 2021

Direct synthesis of -methyl benzaldehyde from acetaldehyde via an organic amine-catalyzed dehydrogenation mechanism.

iScience 2021 Sep 23;24(9):103028. Epub 2021 Aug 23.

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

-Methyl benzaldehyde (-MBA) is a class of key chemical intermediates of pharmaceuticals. Conventional industrial processes for -MBA production involve the consecutive photochlorination, amination, and acid hydrolysis of petroleum-derived -xylene, while producing vast pollutants and waste water. Herein, we report a direct, green route for selective synthesis of -MBA from acetaldehyde using a diphenyl prolinol trimethylsilyl ether catalyst. Read More

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September 2021

Tree recruitment is determined by stand structure and shade tolerance with uncertain role of climate and water relations.

Ecol Evol 2021 Sep 19;11(17):12182-12203. Epub 2021 Aug 19.

Forest Ecology Department of Environmental Systems Science Institute of Terrestrial Ecosystems ETH Zurich Zurich Switzerland.

Tree regeneration is a key process for long-term forest dynamics, determining changes in species composition and shaping successional trajectories. While tree regeneration is a highly stochastic process, tree regeneration studies often cover narrow environmental gradients only, focusing on specific forest types or species in distinct regions. Thus, the larger-scale effects of temperature, water availability, and stand structure on tree regeneration are poorly understood. Read More

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September 2021

Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil.

Ecol Evol 2021 Sep 4;11(17):11808-11825. Epub 2021 Aug 4.

Ecology and Conservation Biology Texas A&M University College Station TX USA.

In seasonally dry tropical forests, plant functional type can be classified as deciduous low wood density, deciduous high wood density, or evergreen high wood density species. While deciduousness is often associated with drought-avoidance and low wood density is often associated with tissue water storage, the degree to which these functional types may correspond to diverging and unique water use strategies has not been extensively tested.We examined (a) tolerance to water stress, measured by predawn and mid-day leaf water potential; (b) water use efficiency, measured via foliar δC; and (c) access to soil water, measured via stem water δO. Read More

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September 2021

Organocatalytic asymmetric synthesis of α-amino esters from sulfoxonium ylides.

Chem Sci 2021 Aug 7;12(33):11191-11196. Epub 2021 Jul 7.

Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University Changzhou China

Described here is the first organocatalytic asymmetric N-H insertion reaction of α-carbonyl sulfoxonium ylides. Without a metal catalyst, this reaction represents an attractive complement to the well-established carbene insertion reactions. As a stable surrogate of diazocarbonyl compounds, sulfoxonium ylides reacted with a range of aryl amines to provide efficient access to α-aryl glycines with excellent enantiocontrol in the presence of a suitable chiral phosphoric acid catalyst. Read More

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Metabolic effect of drought stress on the leaves of young oil palm (Elaeis guineensis) plants using UHPLC-MS and multivariate analysis.

Sci Rep 2021 Sep 14;11(1):18271. Epub 2021 Sep 14.

Institute of Chemistry, Federal University of Goiás, Campus Samambaia, Goiânia, GO, 74690-900, Brazil.

The expansion of the oil palm in marginal areas can face challenges, such as water deficit, leading to an impact on palm oil production. A better understanding of the biological consequences of abiotic stresses on this crop can result from joint metabolic profiling and multivariate analysis. Metabolic profiling of leaves was performed from control and stressed plants (7 and 14 days of stress). Read More

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September 2021

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J Pharmacol Exp Ther 2021 Sep 14. Epub 2021 Sep 14.

University of Toledo, United States.

Ketone bodies are essential energy substrates in the absence of exogenous nutrients, and more recently, they have been suggested to prevent disease and improve longevity. β-hydroxybutyrate (βHB) is the most abundant ketone body. The secondary alcohol, 1,3-butanediol (1,3-BD), is commonly administered to raise βHB bioavailability and in the absence of nutrient deprivation. Read More

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September 2021

A comprehensive study on the heterogeneous electro-Fenton degradation of tartrazine in water using CoFeO/carbon felt cathode.

Chemosphere 2021 Sep 6;287(Pt 2):132141. Epub 2021 Sep 6.

Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Viet Nam. Electronic address:

In this study, cobalt ferrite coated carbon felt (CoFeO/CF) was synthesized by solvothermal method and applied as cathode for electro-Fenton (EF) treatment of tartrazine (TTZ) in water. The materials were characterized by SEM, XRD, FTIR, CV, and EIS to explore their physical, chemical, and electrical properties. The effects of solvothermal temperature and metal content on the TTZ removal were examined, showing that 220 °C with 2 mM of Co and 4 mM of Fe precursors were the best synthesis condition. Read More

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September 2021

Synthesis of zeolite/geopolymer composite for enhanced sequestration of phosphate (PO) and ammonium (NH) ions; equilibrium properties and realistic study.

J Environ Manage 2021 Sep 11;300:113723. Epub 2021 Sep 11.

Geology Department, Faculty of Science, Beni-Suef University, Beni -Suef city, Egypt; Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef City, Egypt. Electronic address:

Zeolite impeded geopolymer (Z/G) was synthesized from natural kaolinite and diatomite. The structure (Z/G) was characterized as an enhanced adsorbent for PO and NH ions from aqueous solutions, groundwater, and sewage water. The synthetic Z/G structure exhibits sequestration capacities of 206 mg/g and 140 mg/g for PO and NH, respectively which are higher values than the recognized results for the geopolymer and other adsorbents in literature. Read More

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September 2021

Breastfeeding undernutrition changes iBAT-involved thermogenesis protein expression and leads to a lean phenotype in adult rat offspring.

J Nutr Biochem 2021 Sep 11:108857. Epub 2021 Sep 11.

Research Group on Perinatal Programming of Metabolic Diseases: DOHaD paradigm, Laboratory of Metabolic and Cardiovascular Diseases, Health Education and Research Center (NUPADS), Institute of Health Sciences, Federal University of Mato Grosso, University Campus of Sinop, Sinop, MT, Brazil. Electronic address:

Nutritional insults early in life have been associated with metabolic diseases in adulthood. We aimed to evaluate the effects of maternal food restriction during the suckling period on metabolism and interscapular brown adipose tissue (iBAT) thermogenically involved proteins in adult rat offspring. Wistar rats underwent food restriction by 50% during the first two-thirds of lactation (FR50 group). Read More

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September 2021

Seeing in the swamp: hydrogen sulfide inhibits eye metabolism and visual acuity in a sulfide-tolerant fish.

Biol Lett 2021 09 15;17(9):20210329. Epub 2021 Sep 15.

Department of Integrative Biology, University of Guelph, Guelph, Canada.

In fish, vision may be impaired when eye tissue is in direct contact with environmental conditions that limit aerobic ATP production. We hypothesized that the visual acuity of fishes exposed to hydrogen sulfide (HS)-rich water would be altered owing to changes in cytochrome c oxidase (COX) activity. Using the HS-tolerant mangrove rivulus (), we showed that a 10 min exposure to greater than or equal to 200 µM of HS impaired visual acuity and COX activity in the eye. Read More

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September 2021

Reindeer herders from subarctic Finland exhibit high total energy expenditure and low energy intake during the autumn herd roundup.

Am J Hum Biol 2021 Sep 14:e23676. Epub 2021 Sep 14.

Department of Evolutionary Anthropology, Duke University, Durham, North Carolina, USA.

Objective: High levels of total energy expenditure (TEE, kcal/day) have been documented among numerous human populations such as tropical climate horticulturalists and high-altitude agriculturalists. However, less work has been conducted among highly physically active cold climate populations.

Methods: In October 2018, TEE was measured using the doubly labeled water (TEE , N = 10) and flex-heart rate methods (TEE , N = 24) for 6-14 days among reindeer herders (20-62 years) in northern Finland during an especially physically demanding, but not seasonally representative, period of the year for herders-the annual reindeer herd roundup. Read More

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September 2021

Synthesis and Electronic Modulation of Nanostructured Layered Double Hydroxides for Efficient Electrochemical Oxygen Evolution.

ChemSusChem 2021 Sep 14. Epub 2021 Sep 14.

Sichuan University, College of Polymer Science and Engineering, CHINA.

Water electrolysis is considered to be one of the most promising technologies to produce clean fuels. However, its extensive realization critically depends on the progress in cost-effective and high-powered oxygen evolution reaction (OER) electrocatalysts. As a member of the big family of two-dimensional (2D) materials, nanostructured layered double hydroxides (nLDHs) have made significant processes and continuous breakthroughs for OER electrocatalysis. Read More

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September 2021

Are Current Tissue-Based Selenium Guidelines and Criteria Overly Protective of Freshwater Fish Populations? A Critical Review with Recommendations.

Integr Environ Assess Manag 2021 Sep 14. Epub 2021 Sep 14.

Red Cap Consulting, Lake Point, UT, USA.

Several decades after selenium impacts to wild fish populations were observed in freshwater reservoirs receiving fly ash effluents from electric power facilities at Belews Lake and Hyco Reservoir (North Carolina, USA), developments in selenium toxicology have led to a greater understanding of selenium effects on freshwater fish. These latter advancements have allowed regulatory agencies in several jurisdictions to develop tissue-based toxicity benchmarks for the protection of aquatic life. These benchmarks were generally derived from data sets encompassing multiple fish species, and designed to protect the most sensitive species (United States Environmental Protection Agency (EPA) water quality criteria). Read More

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September 2021

The combination of R2R3-MYB gene AmRosea1 and hairy root culture is a useful tool for rapidly induction and production of anthocyanins in Antirrhinum majus L.

AMB Express 2021 Sep 14;11(1):128. Epub 2021 Sep 14.

College of Horticulture Science, Zhejiang A & F University, Linan, 311300, China.

Anthocyanins are the largest group of water-soluble pigments and beneficial for human health. Although most plants roots have the potential to express natural biosynthesis pathways required to produce specialized metabolites such as anthocyanins, the anthocyanin synthesis is specifically silenced in roots. To explore the molecular mechanism of absence and production ability of anthocyanin in the roots, investigated the effect of a bHLH gene AmDelila, and an R2R3-MYB gene AmRosea1, which are the master regulators of anthocyanin biosynthesis in Antirrhinum majus flowers, by expressing these genes in transformed hairy roots of A. Read More

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September 2021

Facile synthesis of Fe-doped CoP nanosheet arrays wrapped by graphene for overall water splitting.

Dalton Trans 2021 Sep 14;50(35):12168-12178. Epub 2021 Sep 14.

Department of Chemistry, Shahid Beheshti University, G. C., 1983963113, Evin, Tehran, Iran..

The development of durable, beneficial, and highly active non-precious metal-based electrocatalysts for hydrogen generation is a vital concern. This study proposes an effective strategy for the construction of Fe doped CoP nanosheet arrays wrapped by graphene (FCP-G) on nickel foam as an efficient electrocatalyst for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). In this design, the final catalyst possesses a combination of the high conductivity of graphene, great surface porosity, and the intrinsic electrocatalytic activity of the FCP-G which results in high-performance electrocatalytic activity toward the HER and OER. Read More

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September 2021

Catalytic water oxidation by an generated ruthenium nitrosyl complex bearing a bipyridine-bis(alkoxide) ligand.

Dalton Trans 2021 Sep 14;50(35):12316-12323. Epub 2021 Sep 14.

Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, SAR, P. R. China.

Oxidative degradation and transformation of catalysts are commonly observed in water oxidation by molecular catalysts, especially when a highly oxidizing reagent such as (NH)[Ce(NO)] [Ce(IV)] is used. We report herein the synthesis of a ruthenium(III) complex bearing an oxidative resistant bipyridine-bis(alkoxide) ligand, [Ru(bdalk)(pic)] (1, Hbdalk = 2,2'-([2,2'-bipyridine]-6,6'-diyl)bis(propan-2-ol), pic = 4-picoline) as a water oxidation catalyst (WOC). A ruthenium(II) nitrosyl complex [Ru(Hbdalk)(NO)(pic)] (3) was also formed during the water oxidation process by 1/Ce(IV), and was isolated and structurally characterized. Read More

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September 2021

Parameters Influencing Lipase-Catalyzed Glycolipid Synthesis by (Trans-)Esterification Reaction.

Adv Biochem Eng Biotechnol 2021 Sep 14. Epub 2021 Sep 14.

Institute of Process Engineering in Life Sciences II: Technical Biology, Karlsruhe Institute of Technology, Karlsruhe, Germany.

Glycolipids are biodegradable, non-toxic surfactants with a wide range of applications. Enzymatic esterification or transesterification facilitated in reaction media of low water activity is a reaction strategy for the production of tailor-made glycolipids as a high structural diversity can be achieved. Organic solvents, ionic liquids, and deep eutectic solvents have been applied as reaction media. Read More

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September 2021

Facilitating functionalization of benzene-1,3,5-tricarboxamides by switching amide connectivity.

Org Biomol Chem 2021 Sep 14. Epub 2021 Sep 14.

Laboratory of Macromolecular and Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands.

Synthetic water-compatible supramolecular polymers based on benzene-1,3,5-tricarboxamides (BTAs) have attracted a lot of interest in recent years, as they are uniquely suited to generate functional multicomponent biomaterials. Their morphologies and intrinsic dynamic behaviour mimic fibrous structures found in nature. Moreover, their modularity allows control of the density of functionalities presented on the surface of the fibres when using functionalized BTA monomers. Read More

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September 2021