1,510,228 results match your criteria Chemical Vapor Deposition[Journal]


Protein microspheres as structuring agents in lipids: potential for reduction of total and saturated fat in food products.

J Sci Food Agric 2020 Jul 6. Epub 2020 Jul 6.

Life Quality Engineering Interest Group, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.

Excess consumption of total and saturated fats is linked to the development of chronic diseases, such as obesity, heart disease, diabetes, and cancer. There is therefore considerable interest in the development of foods containing lower levels of total and saturated fats, but that still have the same desirable physicochemical and sensory characteristics as the original foods. Solid fats normally contribute a number of key functional attributes to foods due to their ability to form crystalline networks that alter texture (such as elasticity, plasticity, and spreadability) and appearance (such as opacity and creaminess). Read More

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http://dx.doi.org/10.1002/jsfa.10645DOI Listing

Self-crosslinking hyaluronic acid-carboxymethylcellulose hydrogel enhances multilayered 3D printed construct shape integrity and mechanical stability for soft tissue engineering.

Biofabrication 2020 Jul 6. Epub 2020 Jul 6.

Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea (the Republic of).

One of the primary challenge in extrusion-based 3D bioprinting is the ability to print self-supported multi-layered constructs with biocompatible hydrogels. The bioinks should have sufficient post-printing mechanical stability for the soft tissue and organ regeneration. Here, we report on the synthesis, characterization and 3D printability of hyaluronic acid (HA) - carboxymethylcellulose (CMC) hydrogels cross-linked through an N-acyl-hydrazone [C=N-NH-C(=O)-R] bonding. Read More

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http://dx.doi.org/10.1088/1758-5090/aba2f7DOI Listing

High-performance flexible asymmetric supercapacitor based on rGO anode and WO3/WS2 core/shell nanowire cathode.

Nanotechnology 2020 Jul 6. Epub 2020 Jul 6.

NanoScience Technology Center, University of Central Florida - College of Optics and Photonics, Orlando, Florida, UNITED STATES.

Flexible smart electronics require their energy storage device to be flexible in nature. Developing high-performance flexible energy storage devices require direct integration of electrode active materials on current collectors to satisfy the high electronic/ionic conduvtivity and long-term durability requirements. Herein, we develop a flexible all-solid-state asymmetric supercapacitor comprised of reduced graphene oxide (rGO) and core/shell tungsten trioxide/tungsten disulfide (WO3/WS2) nanowire based electrodes. Read More

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http://dx.doi.org/10.1088/1361-6528/aba305DOI Listing

Direct catalytic decomposition of NO over bismuth modified NiO catalysts.

J Hazard Mater 2020 Jun 29;401:123334. Epub 2020 Jun 29.

National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China. Electronic address:

Direct catalytic decomposition is a promising technology to control the emission of nitrous oxide (NO) during fossil fuel combustion and various chemical industries. In this study, a series of NiO catalysts modified with different metal oxides (MNiO) were prepared by the co-precipitation method and employed for the direct catalytic decomposition of NO. Bismuth (Bi) species was confirmed to be the most optimal promoter and the BiNiO catalyst with a Bi/Ni molar ratio of 0. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123334DOI Listing

Advanced utilization of copper in waste printed circuit boards: Synthesis of nano-copper assisted by physical enrichment.

J Hazard Mater 2020 Jun 23;401:123294. Epub 2020 Jun 23.

College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China. Electronic address:

The copper in the waste printed circuit boards (WPCBs) is cleanly recycled by physical methods and presented in the form of nano copper particles by hydrometallurgical, which provides environmental approach to the advanced utilization of metal copper. Copper in WPCBs was first pre-concentrated by gradient enrichment process including gravity separation, mechanical grinding and flotation. The leaching method was then used to dissolve copper from the flotation concentrate in ammoniacal/ammonium salt solutions. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123294DOI Listing

Mineralogical and morphological factors affecting the separation of copper and arsenic in flash copper smelting slag flotation beneficiation process.

J Hazard Mater 2020 Jun 23;401:123293. Epub 2020 Jun 23.

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China.

Separating copper and arsenic has always been a major problem in the copper slag flotation process, which influences copper slag utilization and the environmental safety. A comparative study of flash smelting furnace (FSF) slag and its flotation products (concentrate and tailing) reveals the factors affecting the separation of copper and arsenic in the beneficiation process from the perspective of mineralogy and morphology. The elemental fractionation in the process shows a positive correlation of As, Cu and Cd and an obvious correlation between speciation transformation of copper and arsenic was observed. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123293DOI Listing

Immobilization of cesium and iodine into CsBiI perovskite-silica composites and core-shell waste forms with high waste loadings and chemical durability.

J Hazard Mater 2020 Jun 22;401:123279. Epub 2020 Jun 22.

Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, NY 12180, United States. Electronic address:

CsBiI, a defect perovskite derivative, is a potential host phase to immobilize iodine and cesium with high waste loadings. In this work, two strategies were explored to form CsBiI-silica composites and a core-shell structure in order to improve chemical durability of waste form materials meanwhile maintaining high waste loadings. CsBiI loadings as high as 70 wt. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123279DOI Listing

Application of zero valent iron (ZVI) immobilized in Ca-Alginate beads for C.I. Reactive Red 195 catalytic degradation in an air lift reactor operated with ozone.

J Hazard Mater 2020 Jun 22;401:123275. Epub 2020 Jun 22.

Universidade Tecnológica Federal do Paraná (UTFPR), Câmpus Pato Branco, Programa de Pós-graduação em Tecnologia de Processos Químicos e Bioquímicos, Departamento Acadêmico de Química, Via do Conhecimento Km 01, CEP 85503-390, Pato Branco, Paraná, Brazil. Electronic address:

The efficiency of nanoscale zero-valent iron (nZVI) for the recalcitrant organic pollutants degradation has been frequently reported. However, some disadvantages such as low hydraulic conductivity, rapid passivation and consequent loss of reactivity have motivated researchers to study immobilized forms. In this work, calcium alginate beads incorporated with nZVI were prepared, characterized and applied in a catalytic ozonation system of Reactive Red 195 dye (RR195). Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123275DOI Listing

Potential threats of zeolitic imidazolate framework-8 nanoparticles to aquatic fungi associated with leaf decomposition.

J Hazard Mater 2020 Jun 22;401:123273. Epub 2020 Jun 22.

School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Key Laboratory of Pollution Treatment and Resource, China National Light Industry, Zhengzhou, China; Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, China.

Synthesis of zeolitic imidazolate framework-8 nanoparticles (ZIF-8 NPs) and evaluation of their potential threats on ecosystem functioning has been reported in this work. A 45-day indoor experiment was conducted to explore the effects of ZIF-8 NPs at three different concentrations (10, 100, and 1000 μg L) on the aquatic fungal community associated with Populus nigra L. leaf litter decomposition. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123273DOI Listing

Construction of β-BiO/BiOCO heterojunction photocatalyst for deep understanding the importance of separation efficiency and valence band position.

J Hazard Mater 2020 Jul 3;401:123262. Epub 2020 Jul 3.

College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China. Electronic address:

Constructing heterojunctions would result in the change of valence band position, which is an important factor determining the oxidative ability of photo-induced holes, has received scant attention. In this paper, β-BiO/BiOCO composites with different ratios were obtained via ionic-liquid-assisted solvothermal and in-situ calcination processes. UV-vis DRS, Mott-Schottky test, and Kelvin probe measurement showed the change of band gaps of β-BiO and BiOCO before and after heterojunction formation. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123262DOI Listing

Role of MnO in controlling iron and arsenic mobilization from illuminated flooded arsenic-enriched soils.

J Hazard Mater 2020 Jul 1;401:123362. Epub 2020 Jul 1.

Zhejiang Provincial Key Laboratory of Watershed Science & Health, School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, People's Republic of China; Department of Land, Air and Water Resources, University of California, Davis, Davis, CA, 95616, United States.

This study examined the role of intermittent illumination/dark conditions coupled with MnO-ammendments to regulate the mobility of As and Fe in flooded arsenic-enriched soils. Addition of MnO particles with intermittent illumination led to a pronounced increase in the reductive-dissolution of Fe(III) and As(V) from flooded soils compared to a corresponding dark treatments. A higher MnO dosage (0. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.123362DOI Listing

High-precision measurement of pH in the full toothpaste using NMR chemical shift.

J Magn Reson 2020 Jun 25;317:106771. Epub 2020 Jun 25.

Colgate-Palmolive Company, 909 River Rd., Piscataway, NJ 08855, USA.

The pH of toothpaste is a critical factor for product stability and customer acceptance. However, no reliable and consistent method is currently available to precisely quantify pH in toothpaste as it is. In this study, a new method to directly determine pH value in the full toothpaste contained sodium bicarbonate (NaHCO) was developed. Read More

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http://dx.doi.org/10.1016/j.jmr.2020.106771DOI Listing

A novel pipeline of 2-(benzenesulfonamide)-N-(4-hydroxyphenyl) acetamide analgesics that lack hepatotoxicity and retain antipyresis.

Eur J Med Chem 2020 Jun 30;202:112600. Epub 2020 Jun 30.

Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, LA, 70112, USA.

Although acetaminophen (ApAP) is one of the most commonly used medicines worldwide, hepatotoxicity is a risk with overdose or in patients with compromised liver function. ApAP overdose is the most common cause of acute fulminant hepatic failure. Oxidation of ApAP to N-acetyl-p-benzoquinone imine (NAPQI) is the mechanism for hepatotoxicity. Read More

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http://dx.doi.org/10.1016/j.ejmech.2020.112600DOI Listing

White wine processing by UHPH without SO. Elimination of microbial populations and effect in oxidative enzymes, colloidal stability and sensory quality.

Food Chem 2020 Jun 27;332:127417. Epub 2020 Jun 27.

enotecUPM, Chemistry and Food Technology Department, ETSIAAB, Universidad Politécnica de Madrid, Avenida Complutense S/N, 28040 Madrid, Spain. Electronic address:

The use of UHPH sterilization in the absence of SO has been used to eliminate wild microorganisms and inactivate oxidative enzymes. A white must of the Muscat of Alexandria grape variety was continuously processed by UHPH at 300 MPa (inlet temperature: 23-25 °C). The initial microbial load of the settled must was 4-log CFU/mL for both yeast and moulds, and slightly lower for bacteria. Read More

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http://dx.doi.org/10.1016/j.foodchem.2020.127417DOI Listing

Tracking nitrate and sulfate sources in groundwater of an urbanized valley using a multi-tracer approach combined with a Bayesian isotope mixing model.

Water Res 2020 Jun 1;182:115962. Epub 2020 Jun 1.

Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501, Monterrey, 64149, Nuevo León, Mexico. Electronic address:

Over the past decades, groundwater quality has deteriorated worldwide by nitrate pollution due to the intensive use of fertilizers in agriculture, release of untreated urban sewage and industrial wastewater, and atmospheric deposition. Likewise, groundwater is increasingly polluted by sulfate due to the release of domestic, municipal and industrial wastewaters, as well as through geothermal processes, seawater intrusion, atmospheric deposition, mineral dissolution, and acid rain. The urbanized and industrialized Monterrey valley has a long record of elevated nitrate and sulfate concentrations in groundwater with multiple potential pollution sources. Read More

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http://dx.doi.org/10.1016/j.watres.2020.115962DOI Listing

Microplastic pollution research methodologies, abundance, characteristics and risk assessments for aquatic biota in China.

Environ Pollut 2020 Jun 30;266(Pt 3):115098. Epub 2020 Jun 30.

Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, 530007, China. Electronic address:

The widespread presence of microplastics in global aquatic ecosystems has aroused growing concern about the potential impacts of microplastics on aquatic biota. In marine and freshwater environments, microplastics are distributed pervasively within water bodies from the upper water column to the bottom layer, making them available to a large variety of aquatic organisms that inhabit different locations. The ingestion of microplastic particles may cause harm to aquatic organisms. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115098DOI Listing

Synergistic effect of fenpropathrin and paclobutrazol on early life stages of zebrafish (Danio rerio).

Environ Pollut 2020 Jun 22;266(Pt 3):115067. Epub 2020 Jun 22.

State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products / Key Laboratory for Pesticide Residue Detection of Ministry of Agriculture / Laboratory (Hangzhou) for Risk Assessment of Agricultural Products of Ministry of Agriculture, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, China. Electronic address:

Aquatic organisms are usually exposed to various co-existing pollutants. However, toxic effects of pesticide mixtures on aquatic organisms and its potential underlying mechanism still remain unclear. The joint effects of fenpropathrin (FEN) and paclobutrazol (PAC) on zebrafish (Danio rerio) using diverse toxicological endpoints were investigated in the current work. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.115067DOI Listing

Accurate EELS background subtraction - an adaptable method in MATLAB.

Ultramicroscopy 2020 Jun 25;217:113052. Epub 2020 Jun 25.

Department of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom; Nanoscale and Microscale Research Centre, Cripps South, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.

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http://dx.doi.org/10.1016/j.ultramic.2020.113052DOI Listing

Evaluation of hypopigmentation in embryonic zebrafish induced by emerging disinfection byproduct, 3, 5-di-I-tyrosylalanine.

Aquat Toxicol 2020 Jun 23;225:105525. Epub 2020 Jun 23.

Key Laboratory of Optoelectronic Chemical Materials and Devices, Jianghan University, Wuhan 430056, China. Electronic address:

Halogenated dipeptides, 3, 5-di-I-tyrosylalanine (DIYA), have been identified as novel disinfection byproducts (DBPs), following chloramination of authentic water. However, little is known about their toxicity. Zebrafish embryos were used to assess the toxicity of novel iodinated DBPs (I-DBPs). Read More

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http://dx.doi.org/10.1016/j.aquatox.2020.105525DOI Listing

N-methoxy-β-carboline alkaloids with inhibitory activities against Aβ aggregation and acetylcholinesterase from the stems of Picrasma quassioides.

Bioorg Chem 2020 Jun 25;101:104043. Epub 2020 Jun 25.

Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China; College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China. Electronic address:

Nine new N-methoxy-β-carboline alkaloids (NMCAs) (1a/1b-3a/3b and 4-6) and two known NMCAs (7 and 8) were isolated from the stems of Picrasma quassioides. Their structures were elucidated by spectroscopic data analyses, quantum chemical calculations, and single-crystal X-ray crystallographic data. An analysis of the C NMR chemical shifts of the N-methoxy groups in these NMCAs and 41 gathered known compounds reveals the phenomenon that the chemical shifts of all these N-methoxy groups are greater than δ 62, which can be used to recognize the N-methoxy group rapidly. Read More

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http://dx.doi.org/10.1016/j.bioorg.2020.104043DOI Listing

Natural therapeutic agents for neurodegenerative diseases from the shells of Xanthoceras sorbifolium.

Bioorg Chem 2020 Jun 24;101:104038. Epub 2020 Jun 24.

School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning, China. Electronic address:

Neuroinflammation is linked to neurodegenerative diseases, manifested by the microglial-released over-production of nitric oxide (NO). However, so far there is no effective strategy regarding curing or preventing neurodegenerative diseases. Triterpene saponins from Xanthoceras sorbifolium were proved to be capable of eliciting a protective effect in neurodegenerative diseases. Read More

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http://dx.doi.org/10.1016/j.bioorg.2020.104038DOI Listing

Synthesis and antitumor activity of α,β-unsaturated carbonyl moiety- containing oleanolic acid derivatives targeting PI3K/AKT/mTOR signaling pathway.

Bioorg Chem 2020 Jun 25;101:104036. Epub 2020 Jun 25.

Department of Pharmacology, Dalian Medical University, Dalian 116044, China. Electronic address:

Oleanolic acid (OA) and its semi-synthetic derivatives have been reported to have a wide range of biological activities. The introduction of electrophilic Michael acceptor group can increase the reactivity of OA to cellular targets and thus improve the anti-tumor activity. In this work, a series of novel α,β-unsaturated carbonyl derivatives of OA were designed and synthesized. Read More

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http://dx.doi.org/10.1016/j.bioorg.2020.104036DOI Listing

Bioactive triterpenoids from Lantana camara showing anti-inflammatory activities in vitro and in vivo.

Bioorg Chem 2020 Jun 10;101:104004. Epub 2020 Jun 10.

State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, and Drug Discovery Center for Infectious Disease, Nankai University, Tianjin 300050, People's Republic of China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, People's Republic of China. Electronic address:

Bioactive natural products play an important role in the research and development of new drugs. In our search for bioactive natural substances as potential lead compounds for inflammation, four new (1-4) and six known (6-10) triterpenoids were acquired from Lantana camara. Using NMR and MS techniques and electronic circular dichroism (ECD) calculations, these isolates were characterized and the new compounds (1-4) were found to be euphane-type triterpenoids. Read More

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http://dx.doi.org/10.1016/j.bioorg.2020.104004DOI Listing

Snowballing transmission of COVID-19 (SARS-CoV-2) through wastewater: Any sustainable preventive measures to curtail the scourge in low-income countries?

Sci Total Environ 2020 Jul 2;742:140680. Epub 2020 Jul 2.

Department of Agricultural Civil Engineering, Kyungpook National University, Daegu, Republic of Korea; Institute of Agricultural Science & Technology, Kyungpook National University, Daegu, Republic of Korea. Electronic address:

In this communication, we proposed sustainable preventive measures that may be adopted by the low-income countries to forestall the potential outbreak and transmission of COVID-19 (coronavirus disease 2019) through wastewater. Most low-income countries have poor sanitation and wastewater management policies, which create potential risks of COVID 19 spread. Hence, the proposed measures include decentralization of wastewater treatment facilities, community-wide monitoring and testing of SARS-CoV-2 in wastewater samples, improved sanitation, developing point-of-use devices for wastewater decontamination, and more focused policy interventions. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140680DOI Listing

The effective design of sampling campaigns for emerging chemical and microbial contaminants in drinking water and its resources based on literature mining.

Sci Total Environ 2020 Jun 26;742:140546. Epub 2020 Jun 26.

National Institute for Public Health and the Environment (RIVM), PO Box 1, 3720 BA Bilthoven, the Netherlands; Utrecht University, Institute for Risk Assessment Sciences, P.O. Box 80178, 3508 TD Utrecht, the Netherlands.

As well as known contaminants, surface waters also contain an unknown variety of chemical and microbial contaminants which can pose a risk to humans if surface water is used for the production of drinking water. To protect human health proactively, and in a cost-efficient way, water authorities and drinking water companies need early warning systems. This study aimed to (1) assess the effectiveness of screening the scientific literature to direct sampling campaigns for early warning purposes, and (2) detect new aquatic contaminants of concern to public health in the Netherlands. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140546DOI Listing

Composition, spatial distribution and sources of plastic litter on the East China Sea floor.

Sci Total Environ 2020 Jun 30;742:140525. Epub 2020 Jun 30.

State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200062 Shanghai, China; Plastic Marine Debris Research Center, East China Normal University, 200062 Shanghai, China; Regional Training and Research Center on Plastic Marine Debris and Microplastics, IOC-UNESCO, Shanghai 200241, China. Electronic address:

Plastics are present in all marine waters around the globe, often at high abundances and they are potentially harmful to marine organisms. In this study, we investigated the regional distribution, composition, and abundance of plastic items on the floor of the East China Sea based on 43 bottom trawl samples collected during 2019. Considerable geographical variation was detected. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140525DOI Listing

Can UV-C laser pulsed irradiation be used for the removal of organic micropollutants from water? Case study with ibuprofen.

Sci Total Environ 2020 Jun 29;742:140507. Epub 2020 Jun 29.

Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/María de Luna 3, 50018 Zaragoza, Spain. Electronic address:

A novel approach based on the direct pulsed irradiation of UV-C light onto ibuprofen (IBP) solutions was evaluated in this work, as proof of concept for the direct removal of micropollutants. The experiments confirmed that laser irradiation is able to completely degrade IBP in 15 min in distilled water, with a DOC depletion of ca. 25% and with transformation products (TPs) remaining in solution and estimated to represent ca. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140507DOI Listing

Solids management in freshwater-recirculating aquaculture systems: Effectivity of inorganic and organic coagulants and the impact of operating parameters.

Sci Total Environ 2020 Jun 20;742:140398. Epub 2020 Jun 20.

Water Energy and Environmental Engineering Research Unit, Faculty of Technology, 90014 University of Oulu, Finland.

Coagulants are widely used for solids (uneaten food, faeces, etc.) management in recirculating aquaculture systems (RAS), but no recent research has been performed on the effectiveness of different coagulants in treatment of aquaculture sludge. This study examined the effectivity of selected inorganic (polyaluminium chloride, PAC) and organic products (polyamine- and starch-based) as coagulant agents for solids management in RAS. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140398DOI Listing

Flawed analysis of an intentional human dosing study and its impact on chlorpyrifos risk assessments.

Environ Int 2020 Jul 2;143:105905. Epub 2020 Jul 2.

Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, WA 98195, USA.

In March 1972, Frederick Coulston and colleagues at the Albany Medical College reported results of an intentional chlorpyrifos dosing study to the study's sponsor, Dow Chemical Company. Their report concluded that 0.03 mg/kg-day was the chronic no-observed-adverse-effect-level (NOAEL) for chlorpyrifos in humans. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105905DOI Listing

Exposure to indoor air pollution across socio-economic groups in high-income countries: A scoping review of the literature and a modelling methodology.

Environ Int 2020 Jul 3;143:105748. Epub 2020 Jul 3.

Air Quality & Public Health Group, Environmental Hazards and Emergencies Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Harwell Science and Innovation Campus, Chilton, UK.

Disparities in outdoor air pollution exposure between individuals of differing socio-economic status is a growing area of research, widely explored in the environmental health literature. However, in developed countries, around 80% of time is spent indoors, meaning indoor air pollution may be a better proxy for personal exposure. Building characteristics - such as build quality, volume and ventilation - and occupant behaviour, mean indoor air pollution may also vary across socio-economic groups, leading to health inequalities. Read More

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http://dx.doi.org/10.1016/j.envint.2020.105748DOI Listing

Enlightening the advancements in electrochemical bioanalysis for the diagnosis of Alzheimer's disease and other neurodegenerative disorders.

J Pharm Biomed Anal 2020 Jun 21;189:113437. Epub 2020 Jun 21.

Department of Analytical Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Madrid, 28040, Spain. Electronic address:

Neurodegenerative disorders (NDD), and particularly Alzheimer's disease (AD), are one of the greatest challenges facing our current medicine and society because of its increasing incidence and the high burden imposed both on patients' families and health systems. Despite this, their accurate diagnosis, mostly conducted by cerebrospinal fluid (CSF) analysis or neuroimaging techniques, costly, time-consuming, and unaffordable for most of the population, remains a complex task. In this situation, electrochemical biosensors are flourishing as promising alternative tools for the simple, fast, and low-cost diagnosis of NDD/AD. Read More

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http://dx.doi.org/10.1016/j.jpba.2020.113437DOI Listing

Anthocyanin-fucoidan nanocomplex for preventing carcinogen induced cancer: enhanced absorption and stability.

Int J Pharm 2020 Jul 3:119597. Epub 2020 Jul 3.

Department of Biomedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 14662, Republic of Korea. Electronic address:

Anthocyanins, commonly extracted from aronia, exhibit excellent in antioxidant activity and anti-cancer activity. However, anthocyanins are not only easily oxidized in water but also rapidly disappear from the body, thus requiring a large amount of administration. To solve these limitations, we selected fucoidan, an anionic polymer, to produce an anthocyanin-fucoidan nanocomplex (AFNC) with enhanced absorption and chemical stability by ionic bonding and π-π stacking between anthocyanins. Read More

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http://dx.doi.org/10.1016/j.ijpharm.2020.119597DOI Listing

Facile fabrication of functional hydrogels consisting of pullulan and polydopamine fibers for drug delivery.

Int J Biol Macromol 2020 Jul 3. Epub 2020 Jul 3.

State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325027, China. Electronic address:

With the rapid development of drug delivery vehicles, more flexible and efficient fabrication strategies are required for biomedicine applications. Naturally resourced polymers have gained considerable attention for construction of drug carriers. Here, biocompatible hydrogel reservoir system (named PHG-PDA) based on pullulan (Pu) and polydopamine (PDA) are designed and fabricated by one-pot incorporation of PDA fibers into pullulan hydrogel (PHG). Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.06.283DOI Listing

Xylanase immobilization onto trichlorotriazine-functionalized polyethylene glycol grafted magnetic nanoparticles: A thermostable and robust nanobiocatalyst for fruit juice clarification.

Int J Biol Macromol 2020 Jul 3. Epub 2020 Jul 3.

Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.

The covalent immobilization of xylanase onto the trichlorotriazine-functionalized polyethylene glycol grafted magnetic nanoparticles was exploited to generate a stabilized xylanase with improved catalytic activity and stability. Several tools were deployed to monitor the synthesis and immobilization processes, the loading capacity of nanocarrier, and the structural/chemical characteristics of the nanobiocatalyst. The optimum immobilization yield of xylanase was 260 mg xylanase/g nanocarrier in 20 mM phosphate buffer, pH 6. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.06.273DOI Listing

Improvement of PersiXyn2 activity and stability in presence of Trehalose and proline as a natural osmolyte.

Int J Biol Macromol 2020 Jul 3. Epub 2020 Jul 3.

Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran. Electronic address:

Compatible solutes or osmolytes stabilize proteins against different stress conditions. In this study, the effect of trehalose and proline against pH and thermal stress is examined on PersiXyn2. Trehalose and proline lowered the optimum pH of PersiXyn2 and increased the optimum temperature of its activity, which is more desirable for its industrial application. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.06.288DOI Listing

Guanidinium binding to proteins: The intriguing effects on the D1 and D2 domains of Thermotoga maritima Arginine Binding Protein and a comprehensive analysis of the Protein Data Bank.

Int J Biol Macromol 2020 Jul 3. Epub 2020 Jul 3.

Department of Science and Technology, University of Sannio, via Francesco de Sanctis snc, Benevento 82100, Italy. Electronic address:

Thermotoga maritima Arginine Binding Protein has been extensively characterized because of its peculiar features and its possible use as a biosensor. In this characterization, deletion of the C-terminal helix to obtain the monomeric protein TmArgBP and dissection of the monomer in its two domains, D1 and D2, have been performed. In the present study the stability of these three forms against guanidinium chloride is investigated by means of circular dichroism and differential scanning calorimetry measurements. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2020.06.290DOI Listing

Self-assembled DNA nanoparticles loaded with Travoprost for Glaucoma-treatment.

Nanomedicine 2020 Jul 3:102260. Epub 2020 Jul 3.

Department of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands; DWI - Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52056, Aachen, Germany; Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany. Electronic address:

Lipid DNA nanoparticles (NPs) exhibit an intrinsic affinity to the ocular surface and can be loaded by hybridization with fluorophore-DNA conjugates or with the anti-glaucoma drug travoprost by hybridizing an aptamer that binds the medication. In the travoprost-loaded NPs (Trav-NPs), the drug is bound by specific, non-covalent interactions, not requiring any chemical modification of the active pharmaceutical ingredient. Fluorescently labeled Trav-NPs show a long-lasting adherence to the eye, up to sixty minutes after eye drop instillation. Read More

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http://dx.doi.org/10.1016/j.nano.2020.102260DOI Listing

Human keratinocytes and monocytes co-culture cell system: An important contribution for the study of moderate and weak sensitizers.

Toxicol In Vitro 2020 Jul 3:104929. Epub 2020 Jul 3.

Laboratory of Toxicology, Department of Environmental and Political Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milan, Italy.

In vitro approaches to address key events in chemical-induced skin sensitization have been developed, but there is still uncertain how they will be useful to predict the potency for an effective risk assessment. Keratinocytes (KCs) play a key role in all phases of skin sensitization. Dendritic cells (DCs) activation and maturation require the binding of cytokines produced by KC as a result of initial chemical exposure. Read More

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http://dx.doi.org/10.1016/j.tiv.2020.104929DOI Listing

Bioactive lipids, inflammation and chronic diseases.

Adv Drug Deliv Rev 2020 Jul 3. Epub 2020 Jul 3.

Department of Medicine, Campus Bio-Medico University of Rome, Via Alvaro del Portillo 21, 00128 Rome, Italy; European Center for Brain Research/IRCCS Santa Lucia Foundation, Via del Fosso di Fiorano 64, 00143 Rome, Italy. Electronic address:

Endogenous bioactive lipids are part of a complex network that modulates a plethora of cellular and molecular processes involved in health and disease, of which inflammation represents one of the most prominent examples. Inflammation serves as a well-conserved defence mechanism, triggered in the event of chemical, mechanical or microbial damage, that is meant to eradicate the source of damage and restore tissue function. However, excessive inflammatory signals, or impairment of pro-resolving/anti-inflammatory pathways leads to chronic inflammation, which is a hallmark of chronic pathologies. Read More

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http://dx.doi.org/10.1016/j.addr.2020.06.028DOI Listing

Eutyscoparols A-G, polyketide derivatives from endophytic fungus Eutypella scoparia SCBG-8.

Fitoterapia 2020 Jul 3:104681. Epub 2020 Jul 3.

Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, People's Republic of China. Electronic address:

The chemical investigation on Eutypella scoparia SCBG-8, an endophytic fungus isolated from the leaves of Leptospermum brachyandrum, has resulted in the isolation of six new phenolic compounds eutyscoparols A-F (1-6) and one new natural product eutyscoparol G (7). The structures and absolute configurations of compounds 1-7 were determined by extensive chemical and spectroscopic analyses such as single crystal X-ray diffractions. Moreover, all compounds were evaluated for their antibacterial and cytotoxic activities in vitro. Read More

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http://dx.doi.org/10.1016/j.fitote.2020.104681DOI Listing

Effects of DEHP on the ecdysteroid pathway, sexual behavior and offspring of the moth Spodoptera littoralis.

Horm Behav 2020 Jul 3:104808. Epub 2020 Jul 3.

Sorbonne Université - Institut d'Écologie et des Sciences de l'Environnement de Paris (iEES Paris) - Département d'Écologie Sensorielle, Campus Pierre et Marie Curie (UPMC), 75252 Paris Cedex 05, France. Electronic address:

Bis(2-ethylhexyl) phthalate (DEHP) is a widely produced plasticizer that is considered to act as an endocrine-disrupting chemical in vertebrates and invertebrates. Indeed, many studies have shown that DEHP alters hormonal levels, reproduction and behavior in vertebrates. Few studies have focused on the effects of DEHP on insects, although DEHP is found almost everywhere in their natural habitats, particularly in soils and plants. Read More

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http://dx.doi.org/10.1016/j.yhbeh.2020.104808DOI Listing

Binder-Jet 3D Printing of Indomethacin-laden Pharmaceutical Dosage Forms.

J Pharm Sci 2020 Jul 3. Epub 2020 Jul 3.

Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA; Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA. Electronic address:

Emerging 3D printing technologies offer an exciting opportunity to create customized 3D objects additively from a digital design file. 3D printing may be further leveraged for personalized medicine, clinical trial, and controlled release applications. A wide variety of 3D printing methods exists, and many studies focus on extrusion-based 3D printing techniques that closely resemble hot melt extrusion. Read More

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http://dx.doi.org/10.1016/j.xphs.2020.06.027DOI Listing

Anti-amoebic potential of azole scaffolds and nanoparticles against pathogenic Acanthamoeba.

Acta Trop 2020 Jul 3:105618. Epub 2020 Jul 3.

Department of Biology, Chemistry and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah 26666, United Arab Emirates.

Acanthamoeba spp. are free living amoeba (FLA) which are widely distributed in nature. They are opportunistic parasites and can cause severe infections to the eye, skin and central nervous system. Read More

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http://dx.doi.org/10.1016/j.actatropica.2020.105618DOI Listing

Drugs that Regulate Local Cell Signaling: AKAP Targeting as a Therapeutic Option.

Annu Rev Pharmacol Toxicol 2020 Jul 6. Epub 2020 Jul 6.

Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA; email:

Cells respond to environmental cues by mobilizing signal transduction cascades that engage protein kinases and phosphoprotein phosphatases. Correct organization of these enzymes in space and time enables the efficient and precise transmission of chemical signals. The cyclic AMP-dependent protein kinase A is compartmentalized through its association with A-kinase anchoring proteins (AKAPs). Read More

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http://dx.doi.org/10.1146/annurev-pharmtox-022420-112134DOI Listing

Rh(III)-Catalyzed C(sp)-H Acetoxylation of 8-Methylquinolines.

Org Lett 2020 Jul 6. Epub 2020 Jul 6.

Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.

A mild and efficient Rh(III)-catalyzed aliphatic C-H acetoxylation directed by quinolines has been developed with widespread functional groups, including various halogens, which usually can provide precursors for further organic synthesis but easily results in selectivity issues in the Pd- and Ni-catalyzed reaction. Interestingly, AcO plays an essential role in promoting the transformation. Read More

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http://dx.doi.org/10.1021/acs.orglett.0c01715DOI Listing

Symmetry Dictated Grain Boundary State in a Two-Dimensional Topological Insulator.

Nano Lett 2020 Jul 6. Epub 2020 Jul 6.

Korea Institute for Advanced Study, Seoul 02455, Korea.

Grain boundaries (GBs) are ubiquitous in solids and have been of central importance in understanding the nature of polycrystals. In addition to their classical roles, topological insulators (TIs) offer a chance to realize GBs hosting distinct topological states that can be controlled by their crystal symmetries. However, such roles of crystalline symmetry in two-dimensional (2D) TIs have not been definitively measured yet. Read More

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http://dx.doi.org/10.1021/acs.nanolett.0c01756DOI Listing

Metabolite profiling of Javanese ginger and identification of antiseizure metabolites via a low-cost open-source zebrafish bioassay-guided isolation.

J Agric Food Chem 2020 Jul 6. Epub 2020 Jul 6.

The rhizomes of Zingiber purpureum, "Bangle", were investigated for its antiseizure properties using a streamlined and cost-effective zebrafish screening strategy and a mouse epilepsy assay. Its hexane extract demonstrated strong antiseizure activity in zebrafish epilepsy assay and was, therefore, selected for bioactivity-guided fractionation. Twelve compounds (1-12) were isolated and two bioactive phenylbutenoids, trans- (11) and cis-banglene (12), reduced up to 70% of pentylenetetrazole (PTZ)-induced seizures. Read More

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http://dx.doi.org/10.1021/acs.jafc.0c02641DOI Listing

Two-Dimensional Carbon-Rich Conjugated Frameworks for Electrochemical Energy Applications.

J Am Chem Soc 2020 Jul 6. Epub 2020 Jul 6.

Following a 15-year-long investigation on graphene, two-dimensional (2D) carbon-rich conjugated frameworks (CCFs) have drawn growing research interest as a new generation of multifunctional materials. Typical 2D CCFs include 2D π-conjugated polymers (also classified as 2D π-conjugated covalent organic frameworks) and 2D π-conjugated metal-organic frameworks, which are characterized by layer-stacked periodic frameworks with high in-plane π-conjugation. These unique structures endow 2D CCFs with regular porosities, large specific surface areas, and superior chemical stability. Read More

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http://dx.doi.org/10.1021/jacs.0c05130DOI Listing

Life-Cycle Greenhouse Gas Emissions and Human Health Tradeoffs of Organic Waste Management Strategies.

Environ Sci Technol 2020 Jul 6. Epub 2020 Jul 6.

Waste-to-energy systems can play an important role in diverting organic waste from landfills. However, real-world waste management can differ from idealized practices, and emissions driven by microbial communities and complex chemical processes are poorly understood. This study presents a comprehensive life-cycle assessment, using reported and measured data, of competing management alternatives for organic municipal solid waste including landfilling, composting, dry anaerobic digestion (AD) for the production of renewable natural gas (RNG), and dry AD with electricity generation. Read More

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http://dx.doi.org/10.1021/acs.est.0c00364DOI Listing

Chemical Probing of Thymine in the TGG/CGG Triad exploring the Deamination of 5-Methylcytosine in the CGG Repeat.

Biochemistry 2020 Jul 6. Epub 2020 Jul 6.

The methylation of cytosine in the full-mutation of the expanded CGG repeat and subsequent deamina-tion to thymine could be a measure for the repeat instability. We report the synthesis of NCD-Bpy, which binds to the TGG/CGG site in the repeat hairpin. NCD-Bpy forces the thymine in the TGG/CGG site to flip out from π-stack, recruits os-mium tetroxide in close vicinity of the flipped-out T, and oxidizes the T. Read More

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http://dx.doi.org/10.1021/acs.biochem.0c00333DOI Listing
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