218,687 results match your criteria thermal coagulation

Myosin sensitivity to thermal denaturation explains differences in water loss and shrinkage during cooking in muscles of distinct fibre types.

Meat Sci 2021 Apr 10;179:108521. Epub 2021 Apr 10.

Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Victoria, Australia.

The effect of thermal protein denaturation on the structure and quality of muscles of different fibre types is not well understood. Unaged masseter (100% type I fibres) and cutaneous trunci (93% type II fibres) muscles (N = 10) were assessed for their characteristics, protein denaturation, cooking loss, Warner- Bratzler shear force (WBSF) and shrinkage after heating at 50 °C - 85 °C with a rate of 5 °C/ min. Raw masseter had a higher pH, collagen and water content, shorter sarcomere, comparable fibre diameter, and shorter and wider fragments upon homogenization, than cutaneous trunci. Read More

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g-CN/MoS based floating solar still for clean water production by thermal/light activation of persulfate.

Chemosphere 2021 Apr 27;280:130618. Epub 2021 Apr 27.

Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, PR China. Electronic address:

Currently, seawater desalination based on air-water interface solar heating has triggered significant research interests because it effectively makes use of the solar energy and avoids fossil fuel consumption. However, to prevent the volatile organic compounds (VOCs) from volatilizing with water vapor which later will liquefy and enter the condensed freshwater is still a challenge. In this work, a g-CN/MoS based floating solar still (CM-FSS) combined with thermal/light activation of persulfate (PS) at air-water interface was applied for clean freshwater production for the first time. Read More

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Low-temperature oxidation of monobromobenzene: Bromine transformation and yields of phenolic species.

Chemosphere 2021 Apr 26;280:130621. Epub 2021 Apr 26.

Charles Darwin University, Office of Deputy Vice-Chancellor and Vice-President, Research & Innovation, Darwin, NT, 0909, Australia.

Brominated benzenes and phenols constitute direct precursors in the formation of bromine-bearing pollutants; most notably PBDD/Fs and other dioxin-type compounds. Elucidating accurate mechanisms and constructing robust kinetic models for the oxidative transformation of bromobenzenes and bromophenols into notorious Br-toxicants entail a comprehensive understanding of their initial oxidation steps. However, pertinent mechanistic studies, based on quantum chemical calculations, have only focused on secondary condensation reactions into PBDD/Fs and PBDEs. Read More

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Comparative study on intercalation-exfoliation and thermal activation modified kaolin for heavy metals immobilization during high-organic solid waste pyrolysis.

Chemosphere 2021 Apr 30;280:130714. Epub 2021 Apr 30.

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, No. 2 Sipailou, Xuanwu District, Nanjing, Jiangsu, 210096, China.

With the new municipal solid waste classification policy implemented in China, attention on achieving the waste-to-energy disposal of "dry waste" has been growing. Pyrolysis conversion of organic waste into value-added chemicals is a promising method to treat solid waste. However, after removing the non-combustible components of "dry waste", the obtained high-organic solid waste (HSW) contains various heavy metals, which requires urgent attention during thermochemical conversion. Read More

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Evaluation of four field portable devices for the rapid detection of mitragynine in suspected kratom products.

J Pharm Biomed Anal 2021 Apr 30;201:114104. Epub 2021 Apr 30.

U.S. Food and Drug Administration, Forensic Chemistry Center, 6751 Steger Drive, Cincinnati, OH, 45237, USA. Electronic address:

The development of a method for the rapid screening of food and drug products for constituents such as mitragynine, the most abundant alkaloid found in Mitragyna speciosa (kratom) plant leaves, has become increasingly important. The use of kratom is said to produce stimulant or narcotic effects and poses risks of addiction, abuse, and dependence, much like other opioids. Direct Analysis in Real Time with thermal desorption mass spectrometry (DART-TD-MS), hand-held mass spectrometry, portable ion mobility spectrometry (IMS), and portable Fourier-transform infrared spectroscopy (FT-IR) were each evaluated as field-deployable screening techniques for the detection of mitragynine in food and drug products. Read More

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Enhanced energy storage of aqueous zinc-carbon hybrid supercapacitors via employing alkaline medium and B, N dual doped carbon cathode.

J Colloid Interface Sci 2021 Apr 24;599:556-565. Epub 2021 Apr 24.

School of Physics and Electronic Science & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200241, PR China. Electronic address:

Zinc-based energy storage systems (zinc-air, zinc-nickel and zinc-ion batteries and zinc-ion hybrid supercapacitors (ZHSs) are considered as promising power sources for wide applications from personal electronic devices to electric vehicles. However, these systems, especially the Zn-based hybrid supercapacitors, display unsatisfying power density and energy density, which should be enhanced for their large-scale applications. In this work, aqueous alkaline zinc-carbon hybrid supercapacitors (A-ZCHS) were designed, consisting of B, N dual doped carbon cathode, Zn anode and KOH electrolyte. Read More

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Nanocellulose-derived carbon/g-CN heterojunction with a hybrid electron transfer pathway for highly photocatalytic hydrogen peroxide production.

J Colloid Interface Sci 2021 Apr 24;599:507-518. Epub 2021 Apr 24.

College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.

Using oxygen reduction for the photocatalytic production of hydrogen peroxide (HO) has been considered a green and sustainable route. In the present study, to achieve high efficiency, graphitic carbon nitride (g-CN) was obtained using thermal polymerization from a bi-component precursor and was then assembled with cellulose nanofibers. It was found that a small quantity of cellulose nanofibers that generates carbon fibers upon pyrolysis greatly improves the photocatalytic activity compared with that of g-CN alone. Read More

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CO photoelectroreduction with enhanced ethanol selectivity by high valence rhenium-doped copper oxide composite catalysts.

J Colloid Interface Sci 2021 Apr 20;599:497-506. Epub 2021 Apr 20.

College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China. Electronic address:

CuO supported catalyst with high valence rhenium doping were specially studied for photoelectrocatalytic reduction of CO to small molecular alcohols, which were synthesized by nitrate thermal decomposition method on anatase TiO nanotube arrays (TiO-NTs). Photoelectrochemical measurements indicate that the high valence rhenium doping helps in improving the catalytic activity and selectivity of CuO supported catalysts. For the case of 6 wt% Re-doped CuO/TiO-NTs calcined at 723 K, the principal products are methanol and ethanol with yield up to 19. Read More

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Study on structural characterization, physicochemical properties and digestive properties of euryale ferox resistant starch.

Food Chem 2021 Apr 22;359:129924. Epub 2021 Apr 22.

School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China.

At present, the raw materials for industrialized RS3 products are relatively simple and its purity is low. In addition, the correlation between structure and digestion characteristics of RS3 are rarely studied. In this study, euryale ferox, a kind of annual aquatic herb crop with high content of starch was used as a raw material to prepare RS3 by different methods, including autoclaving, enzymolysis-autoclaving and dual enzymolysis, respectively. Read More

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Application of the curcumin-mediated photodynamic inactivation for preserving the storage quality of salmon contaminated with L. monocytogenes.

Food Chem 2021 Apr 28;359:129974. Epub 2021 Apr 28.

Department of Food Science, Foshan University, Foshan, 528000, China; College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China. Electronic address:

The effect of curcumin-mediated blue light-emitting diode (LED) photodynamic inactivation (PDI) for preserving the quality of salmon contaminated with Listeria monocytogenes was investigated by microbiological, physical, chemical and histological methods during sample storage at 4 ℃ and 25 ℃. The results showed that PDI decelerated the proliferation of L. monocytogenes on salmon during storage at 25 ℃, with the maximum inhibition reaching 4. Read More

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Residue changes and processing factors of eighteen field-applied pesticides during the production of Chinese Baijiu from rice.

Food Chem 2021 Apr 29;359:129983. Epub 2021 Apr 29.

Longping Branch, Graduate School of Hunan University, Changsha 410125, China; Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China. Electronic address:

The fate of eighteen pesticides in field-collected rice samples during Chinese Baijiu production was systematically studied. The results indicated that steeping decreased flonicamid residue by 73.2% due to its high water-solubility and low octanol/water partition coefficient. Read More

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Distribution, behaviour, bioavailability and remediation of poly- and per-fluoroalkyl substances (PFAS) in solid biowastes and biowaste-treated soil.

Environ Int 2021 May 5;155:106600. Epub 2021 May 5.

Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA; Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA.

Aqueous film-forming foam, used in firefighting, and biowastes, including biosolids, animal and poultry manures, and composts, provide a major source of poly- and perfluoroalkyl substances (PFAS) input to soil. Large amounts of biowastes are added to soil as a source of nutrients and carbon. They also are added as soil amendments to improve soil health and crop productivity. Read More

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Effects of hydrothermal treatments on destruction of per- and polyfluoroalkyl substances in sewage sludge.

Environ Pollut 2021 Apr 30;285:117276. Epub 2021 Apr 30.

Department of Environmental and Sustainable Engineering, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY, 12222, USA.

Sewage sludge has become a sink of per- and polyfluoroalkyl substances (PFAS) due to the ineffectiveness of PFAS removal during conventional activated sludge treatment process. In this study, we evaluated the performance of an enhanced method for PFAS extraction from sewage sludge. Significant matrix effect was observed for samples derived from untreated and hydrothermally treated sludge. Read More

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Synthesis of bio-inspired cellulose nanocrystals-soy protein isolate nanoconjugate for stabilization of oil-in-water Pickering emulsions.

Carbohydr Res 2021 May 1;504:108336. Epub 2021 May 1.

Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; Advanced Engineering Platform, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia; Tropical Medicine and Biology Platform, School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia. Electronic address:

The development of hybrid polysaccharide-protein complexes as Pickering emulsion stabilizers has attracted increasing research interest in recent years. This work presents an eco-friendly surface modification strategy to functionalize hydrophilic cellulose nanocrystals (CNC) using hydrophobic soy protein isolate (SPI) via mussel adhesive-inspired poly (l-dopa) (PLD) to develop improved nanoconjugates as stabilizers for oil-in-water Pickering emulsion. The physicochemical properties of the CNC-PLD-SPI nanoconjugate were evaluated by solid-state C NMR, FT-IR, TGA, XRD, contact angle analysis, and TEM. Read More

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Injectable Hydrogel for Co-Delivery of 5-Azacytidine in Zein Protein Nanoparticles with Stem Cells for Cardiac Function Restoration.

Int J Pharm 2021 May 5:120673. Epub 2021 May 5.

Stem cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai-600036, TN, India. Electronic address:

Heart failure is major cause of mortality associated with mostly Myocardial infarction (MI). Transplanting mesenchymal stem cells (MSC) have exhibited potential role in myocardial regeneration. Secretion of immune-modulatory cytokines and various growth factors after transplantation plays significant role in remodelling process of MI region. Read More

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Evaluation of quality and gene expression of goat embryos produced in vivo and in vitro after cryopreservation.

Cryobiology 2021 May 5. Epub 2021 May 5.

Laboratory of Reproductive Biotechniques, Department of Veterinary Medicine, Federal Rural University of Pernambuco, Brazil. Electronic address:

In the present study, we aimed to identify morphological and molecular changes of in vivo and in vitro-produced goat embryos submitted to cryopreservation. In vivo embryos were recovered by transcervical technique from superovulated goats, whereas in vitro produced embryos were produced from ovaries collected at a slaughterhouse. Embryos were frozen by two-steps slow freezing method, which is defined as freezing to -32 °C followed by transfer to liquid nitrogen. Read More

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Non-thermal plasma-induced DMPO-OH yields hydrogen peroxide.

Arch Biochem Biophys 2021 May 5:108901. Epub 2021 May 5.

Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Showa-Ku, Nagoya, 466-8550, Japan; Center for Low-temperature Plasma Sciences, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan. Electronic address:

Recent developments in electronics have enabled the medical applications of non-thermal plasma (NTP), which elicits reactive oxygen species (ROS) and reactive nitrogen species (RNS), such as hydroxyl radical (OH), hydrogen peroxide (HO), singlet oxygen (O), superoxide (O), ozone, and nitric oxide at near-physiological temperatures. In preclinical studies or human clinical trials, NTP promotes blood coagulation, eradication of bacterial, viral and biofilm-related infections, wound healing, and cancer cell death. To elucidate the solution-phase biological effects of NTP in the presence of biocompatible reducing agents, we employed electron paramagnetic resonance (EPR) spectroscopy to quantify OH using a spin-trapping probe, 5,5-dimethyl-1-pyrroline-N-oxide (DMPO); O using a fluorescent probe; and O and HO using luminescent probes in the presence of thiols or tempol. Read More

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Cloudiness reduces the bleaching response of coral reefs exposed to heat stress.

Glob Chang Biol 2021 May 8. Epub 2021 May 8.

Department of Geography, University of British Columbia, 1984 West Mall, Vancouver, BC, V6T1Z2, Canada.

Climate change and warming ocean temperatures are a threat to coral reef ecosystems. Since the 1980s, there has been an increase in mass coral bleaching and associated coral mortality due to more frequent and severe thermal stress. Although most research has focused on the role of temperature, coral bleaching is a product of the interacting effects of temperature and other environmental variables such as solar radiation. Read More

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Is the southern crab Halicarcinus planatus (Fabricius, 1775) the next invader of Antarctica?

Glob Chang Biol 2021 May 8. Epub 2021 May 8.

LEMAS-Laboratorio de Ecología de Macroalgas Antárticas y Sub antárticas, Universidad de Magallanes, Punta Arenas, Chile.

The potential for biological colonisation of Antarctic shores is an increasingly important topic in the context of anthropogenic warming. Successful Antarctic invasions until now have been recorded exclusively from terrestrial habitats. While non-native marine species such as crabs, mussels and tunicates have already been reported from Antarctic coasts, none have as yet established there. Read More

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Microwave ablation of lung tumors: a probabilistic approach for simulation-based treatment planning.

Med Phys 2021 May 8. Epub 2021 May 8.

Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS, 66506, USA.

Purpose: Microwave ablation (MWA) is a clinically established modality for treatment of lung tumors. A challenge with existing application of MWA, however, is local tumor progression, potentially due to failure to establish an adequate treatment margin. This study presents a robust simulation-based treatment planning methodology to assist operators in comparatively assessing thermal profiles and likelihood of achieving a specified minimum margin as a function of candidate applied energy parameters. Read More

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Effect of epigallocatechin-3-gallate and thermal cycling on the bond strength of resin cements to the root dentin.

Odontology 2021 May 8. Epub 2021 May 8.

School of Dentistry, University of Ribeirão Preto, Avenida Costábile Romano, 2201-Ribeirânia, Ribeirão Prêto, Sao Paulo, 14096-000, Brazil.

This study evaluated the effect of epigallocatechin-3-gallate (EGCG) solution and thermal cycling on the bond strength (BS) of fiber posts to the root dentin using two different resin cements (conventional or self-adhesive). One hundred and forty-four bovine roots were endodontically treated. After post space preparation, specimens were randomly divided into six groups (n = 24) according to dentin pretreatment [distilled water, 0. Read More

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Phototunable Cloud Point Temperatures Stemming from Cyclic Topology: Synthesis and Thermal Phase Transition Behavior of Cyclic Poly(N-acryloylsarcosine methyl ester).

Macromol Rapid Commun 2021 May 8:e2100136. Epub 2021 May 8.

Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Cyclic polymers possess distinct properties compared with their linear counterparts, such as smaller hydrodynamic volume, lower viscosity, and higher glass-transition temperature, etc. To explore the impact of the cyclic topology on the thermo-induced phase transition behavior of poly(N-acryloylsarcosine methyl ester) (PNASME), the anthracene-terminated telechelic PNASMEs are synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of monomer NASME using a bifunctional chain transfer agent (CTA) with two anthryl groups. Subsequently, cyclic PNASMEs are prepared via UV-induced cyclization under 365 nm UV. Read More

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BDNF Participates in Chronic Constriction Injury-Induced Neuropathic Pain via Transcriptionally Activating P2X in Primary Sensory Neurons.

Mol Neurobiol 2021 May 7. Epub 2021 May 7.

Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.

Neuropathic pain, resulting from the pathological changes of the somatosensory nervous system, remains a severe public health problem worldwide. The effect of treatment targeting neuropathic pain is very limited, as the underlying mechanism of neuropathic pain is largely unknown. In this study, we demonstrated that the expression level of brain-derived neurotrophic factor (BDNF) was remarkably and time-dependently increased in dorsal root ganglion (DRG) neurons. Read More

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False and true positives in arthropod thermal adaptation candidate gene lists.

Genetica 2021 May 7. Epub 2021 May 7.

Department of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA.

Genome-wide studies are prone to false positives due to inherently low priors and statistical power. One approach to ameliorate this problem is to seek validation of reported candidate genes across independent studies: genes with repeatedly discovered effects are less likely to be false positives. Inversely, genes reported only as many times as expected by chance alone, while possibly representing novel discoveries, are also more likely to be false positives. Read More

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Temporal structure of brain oscillations predicts learned nocebo responses to pain.

Sci Rep 2021 May 7;11(1):9807. Epub 2021 May 7.

Faculty of Social and Behavioral Sciences, Leiden University, Wassenaarseweg 52, 2333 AK, Leiden, The Netherlands.

This study aimed to identify electrophysiological correlates of nocebo-augmented pain. Nocebo hyperalgesia (i.e. Read More

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Evaluation of the performance and gas emissions of a tractor diesel engine using blended fuel diesel and biodiesel to determine the best loading stages.

Sci Rep 2021 May 7;11(1):9811. Epub 2021 May 7.

Agricultural Botany Department, Faculty of Agriculture, (Saba Basha), Alexandria University, P.O. Box 21531, Alexandria, Egypt.

Fossil fuels are the main energy sources responsible for harmful emissions and global warming. Using biodiesel made from waste deep-frying oil as an alternative fuel source in diesel engines has drawn great attention. This biodiesel is produced using the transesterification process and blends with mineral diesel at Faculty of Agriculture Saba Basha, Alexandria University, Egypt. Read More

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Droplet-based lab-on-chip platform integrated with laser ablated graphene heaters to synthesize gold nanoparticles for electrochemical sensing and fuel cell applications.

Sci Rep 2021 May 7;11(1):9750. Epub 2021 May 7.

MEMS, Microfluidics and Nanoelectronics Laboratory, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India.

Controlled, stable and uniform temperature environment with quick response are crucial needs for many lab-on-chip (LOC) applications requiring thermal management. Laser Induced Graphene (LIG) heater is one such mechanism capable of maintaining a wide range of steady state temperature. LIG heaters are thin, flexible, and inexpensive and can be fabricated easily in different geometric configurations. Read More

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Intracerebroventricular injection of propranolol blocked analgesic and neuroprotective effects of resveratrol following L spinal nerve ligation in rat.

J Complement Integr Med 2021 May 7. Epub 2021 May 7.

Department of Physiology and Medical Physics, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran.

Objectives: Resveratrol as a natural polyphenolic agent can alleviate neuropathic pain symptoms. The mechanism of analgesic activity of resveratrol is far from clear. The current study examine whether analgesic activity of resveratrol is mediated by its neuroprotective and anti-oxidant activity in the neuropathic pain. Read More

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Pulsed Laser-Induced Dewetting and Thermal Dewetting of Ag Thin Films for the Fabrication of Ag Nanoparticles.

Nanotechnology 2021 May 7. Epub 2021 May 7.

Department of Chemistry, University of Calgary, 2500 University Drive, N W, Calgary, Alberta, T2N 1N4, CANADA.

Two different dewetting methods, namely pulsed laser-induced dewetting (PLiD) - a liquid-state dewetting process and thermal dewetting (TD) - a solid-state dewetting process, have been systematically explored for Ag thin films (1.9 - 19.8 nm) on Si substrates for the fabrication of Ag nanoparticles (NPs) and the understanding of dewetting mechanisms. Read More

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The conversion of linoleic acid into hydroxytetrahydrofuran-structured bio-lubricant.

J Environ Manage 2021 May 5;291:112692. Epub 2021 May 5.

Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China. Electronic address:

In this work, a new structured linoleic-based hydroxytetrahydrofuran (HTHF) ester lubricant with excellent properties was developed. A synthesis route through regioselective enzymatic hydration was established, combining highly selective epoxidation with an intramolecular epoxide ring-opening reaction. The results proved that the enzymatic-chemical method is an alternative strategy for the conversion of linoleic acid into bio-lubricants. Read More

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