896,068 results match your criteria temperature °c


Effect of dietary pumpkin (Cucurbita moschata) seed meal on layer performance and egg quality characteristics.

Anim Biosci 2021 Jun 24. Epub 2021 Jun 24.

Department of Chemistry and Animal Nutrition Physiology, National Research and Development Institute for Animal Biology and Nutrition, Balotesti, Ilfov, 077015, Romania.

Objective: The objective of this study was to investigate the of dietary pumpkin (Cucurbita moschata) seed meal (PSM) on laying performance, quality, fatty acids, cholesterol, antioxidant compounds and shelf life of eggs.

Methods: Eighty Tetra SL laying hens, 50-week-old, were randomly divided into two equal groups, having 10 replicates with 4 birds in each. The control (CON) treatment was fed with basal diet, while experimental treatment was fed a diet with 9% pumpkin seed meal (PSM), for a 6 week period. Read More

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Intradermal lipopolysaccharide challenge as an acute in vivo inflammatory model in healthy volunteers.

Br J Clin Pharmacol 2021 Jul 22. Epub 2021 Jul 22.

Centre for Human Drug Research, Leiden, the Netherlands.

Introduction: Whereas intravenous administration of TLR4 ligand lipopolysaccharide (LPS) to human volunteers is frequently used in clinical pharmacology studies, systemic use of LPS has practical limitations. We aimed to characterize the intradermal LPS response in healthy volunteers, and as such qualify the method as local inflammation model for clinical pharmacology studies.

Methods: 18 healthy male volunteers received two or four intradermal 10 ng LPS injections and one saline injection on the forearms. Read More

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Retrobulbar Hyaluronidase Injection: Does It Reach the Eye?

Ophthalmic Plast Reconstr Surg 2021 Jul 21. Epub 2021 Jul 21.

Jhaveri Microbiology Centre, Brien Holden Eye Research Centre Ophthalmic Plastic Surgery Service, L.V. Prasad Eye Institute, Hyderabad, India.

Purpose: To determine if retrobulbar injection of hyaluronidase reaches the vitreous cavity, and to determine its concentration in the vitreous.

Methods: Prospective case-control study. Patients undergoing evisceration with implant for noninfective blind eyes were enrolled in the study. Read More

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Biohybrid generators based on living plants and artificial leaves: Influence of leaf motion and real wind outdoor energy harvesting.

Bioinspir Biomim 2021 Jul 22. Epub 2021 Jul 22.

Center for Micro-Biorobotics, Italian Institute of Technology (IIT), Viale Rinaldo Piaggio 34, Pontedera, 56025, ITALY.

Plants translate wind energy into leaf fluttering and branch motion by reversible tissue deformation. Simultaneously, the plant's outermost structure, i.e. Read More

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A CMOS-compatible morphotropic phase boundary.

Nanotechnology 2021 Jul 22. Epub 2021 Jul 22.

Pohang University of Science and Technology, Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH) 77 Cheongam-Ro, Nam-Gu, Pohang, Gyungbuk, Korea, Pohang, Pohang, 37673, Korea (the Republic of).

Morphotropic phase boundaries (MPBs) show substantial piezoelectric and dielectric responses, which have practical applications. The predicted existence of MPB in HfO2-ZrO2 solid solution thin film has provided a new way to increase the dielectric properties of a silicon-compatible device. Here, we present a new fabrication design by which the density of MPB ρ_(MPB )and consequently the dielectric constant ϵr of HfO2-ZrO2 thin film was considerably increased. Read More

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Thermodynamic Anomalies in Silicon and the Relationship to the Phase Diagram.

J Phys Condens Matter 2021 Jul 22. Epub 2021 Jul 22.

Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, OXFORD, OX1 3QZ, Oxford, OX13QZ, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.

The evolution of thermodynamic anomalies are investigated in the pressure-temperature (pT) plane for silicon using the well-established Stillinger-Weber potential. Anomalies are observed in the density, compressibility and heat capacity. The relationships between these anomalies and between the anomalies and the liquid stability limit are investigated and related to the known ther- modynamic constraints. Read More

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Iron-rich microstructure records of high temperature multi-component silicate melt behavior in nuclear fallout.

J Environ Radioact 2021 Jul 19;237:106700. Epub 2021 Jul 19.

Department of Nuclear Engineering, University of California, Berkeley, USA.

Above-ground nuclear explosions that interact with the surface of the earth entrain materials from the surrounding environment, influencing the resulting physical and chemical evolution of the fireball, which can affect the final chemical phase and mobility of hazardous radionuclides that are dispersed in the environment as fallout particles. The interaction of iron with a nuclear explosion is of specific interest due to the potential for iron to act as a redox buffer and because of the likelihood of significant masses of metals to be present in urban environments. We investigated fallout from a historic surface interacting nuclear explosion conducted on a steel tower and report the discovery of widespread and diverse iron-rich micro-structures preserved within the samples, including crystalline dendrites and micron-scale iron-rich spheres with liquid immiscibility textures. Read More

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Optimizing the microstructure of a new machinable bioactive glass-ceramic.

J Mech Behav Biomed Mater 2021 Jul 13;122:104695. Epub 2021 Jul 13.

Vitreous Materials Laboratory, Materials Engineering Department, Federal University of São Carlos, São Carlos, SP, Brazil.

Objectives: This study aimed to optimize the crystallization process and the microstructure of a new bioactive glass-ceramic (GC) previously developed by our research group to obtain machinable glass-ceramics.

Methods: Differential scanning calorimetry (DSC) analyses were conducted to explore the characteristic temperatures and construct a semi-quantitative nucleation curve. The GC specimens were characterized by X-ray diffraction (XRD) and Rietveld refinement. Read More

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Hydrothermal liquefaction of municipal solid wastes for high quality bio-crude production using glycerol as co-solvent.

Bioresour Technol 2021 Jul 12;339:125537. Epub 2021 Jul 12.

Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; National Center for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India. Electronic address:

This study is focused on the valorization of heterogeneous municipal solid waste collected from the landfill using hydrothermal liquefaction process using glycerol as a co-solvent. The effects of temperature (300-350 °C) and residence time (15-45 min) on the yields and quality of the product fractions were investigated at 8 wt% solid loading. The yield of bio-crude significantly increased from 15. Read More

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Preparation and characterization of magnetic modified bone charcoal for removing Cu ions from industrial and mining wastewater.

J Environ Manage 2021 Jul 20;297:113221. Epub 2021 Jul 20.

College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.

Heavy metal water pollution is an urgent global problem to be addressed. Copper ions are common toxic heavy metal pollutants in wastewater. In order to remove the excessive copper ions in wastewater, in this study, chicken bone charcoal was modified by sodium dodecyl sulfonate and combined with magnetic nanoparticles prepared with ferric chloride hexahydrate and ferrous sulfate heptahydrate to produce a high efficiency adsorbent. Read More

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Insights for applying erythrosine B as a green fluorescence probe for estimation of anticancer tamoxifen and its analog; clomiphene in nanogram concentration.

Authors:
M M Tolba M M Salim

Spectrochim Acta A Mol Biomol Spectrosc 2021 Jul 12;263:120156. Epub 2021 Jul 12.

Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University - Egypt, New Damietta 34511, Egypt. Electronic address:

The growth of tumor tissue is extremely pervasive among post-menopausal women. Commonly, from the clinical application, adjuvant selective estrogen receptor modulators such as tamoxifen are prescribed for prohibiting metastatic breast cancer, while its analog, clomiphene, is used to treat infertility in women. Lately, the significance of green chemistry on our environment was through reducing the influence of hazardous chemicals. Read More

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Vaginal temperature before calving assessed with wireless vaginal temperature sensor in dairy and beef cattle.

Theriogenology 2021 Jul 14;172:230-238. Epub 2021 Jul 14.

Kyushu Okinawa Agricultural Research Center, NARO, Kumamoto, Japan. Electronic address:

We evaluated the daily and hourly vaginal temperature changes and the relationships between the dams' breed and parity by using a commercially available vaginal temperature sensor in 72 Holstein (Hol) calvings and 101 Japanese Black (JB) calvings. Vaginal temperature sensors inserted 7-10 days before the expected calving day sounded two alerts: when the temperature fell below the threshold (Alert 1), and when the sensor reached the ambient temperature after falling out of the dam's vagina with the rupture of the allantoic sac (Alert 2). The durations from Alert 1 to Alert 2 (Time 1) and from Alert 2 to delivery (Time 2) were calculated. Read More

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Aging microplastics in wastewater pipeline networks and treatment processes: Physicochemical characteristics and Cd adsorption.

Sci Total Environ 2021 Jul 8;797:148940. Epub 2021 Jul 8.

Centre for Green Technology, University of Technology Sydney, 15 Broadway, Sydney, NSW 2007, Australia.

Despite a wealth of information on removal of the microplastics (MPs) in wastewater treatment plants (WWTPs), little attention has been paid to how wastewater treatment process affect the MP physicochemical and adsorption characteristics. In this study, changes in physicochemical property of three MPs, i.e. Read More

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Abscisic acid and putrescine synergistically regulate the cold tolerance of melon seedlings.

Plant Physiol Biochem 2021 Jul 13;166:1054-1064. Epub 2021 Jul 13.

Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, College of Horticulture, Shenyang Agricultural University, National and Local Joint Engineering Research Centre of Northern Horticultural, Facilities Design and Application Technology (Liaoning), Shenyang, 110866, Liaoning, PR China. Electronic address:

Low temperature in early spring severely endangers the growth and development of melon seedlings. Abscisic acid (ABA) and polyamines (PAs) are important signal molecules in plant response to stress. However, the issue of whether they interact to regulate melon cold tolerance remains largely uncharacterized. Read More

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The effect of black carbon on the chemical degradability of PCB1 via TENAX desorption technology from the perspective of adsorption states.

Chemosphere 2021 Jul 17;286(Pt 1):131583. Epub 2021 Jul 17.

Department of Environmental Engineering, Zhejiang University, Hangzhou, 310029, People's Republic of China; Key Laboratory of Water Pollution Control and Environmental Safety of Zhejiang Province, 310020, People's Republic of China. Electronic address:

Chemical degradation is one of the crucial methods for the remediation of hydrophobic organic compounds (HOCs) in soil/sediment. The sequestration effect of black carbon (BC) can affect the adsorption state of HOCs, thereby affecting their chemical degradability. Our study focused on the chemical degradability of 2-Chlorobiphenyl (PCB1) sequestrated on the typical BC (fly ash (FC), soot (SC), low-temperature biochar (BC400) and high-temperature biochar (BC900)) by iron-nickel bimetallic nanomaterials (nZVI/Ni) based on TENAX desorption technology. Read More

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Comparison of fleroxacin oxidation by chlorine and chlorine dioxide: Kinetics, mechanism and halogenated DBPs formation.

Chemosphere 2021 Jul 16;286(Pt 1):131585. Epub 2021 Jul 16.

College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China. Electronic address:

Fleroxacin (FLE) is a widely used fluoroquinolones to cure urinary tract infections and respiratory disease, which has been frequently detected in the aquatic environment. The reactivity kinetics of FLE by chlorine and chlorine dioxide (ClO) and transformation mechanism were investigated in this study. The results showed that FLE was degraded efficiently by chlorine and ClO, and both reactions followed second-order kinetics overall. Read More

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CHLORAMPHENICOL LOADED POLYLACTIDE MELT ELESTROSPUN SCAFFOLDS FOR BIOMEDICAL APPLICATIONS.

Int J Pharm 2021 Jul 19:120897. Epub 2021 Jul 19.

Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, SPAIN. Electronic address:

Melt electrospinning of polylactide (PLA) loaded with chloramphenicol (CAM) has been performed and characteristics of fibers, physical properties of scaffolds, CAM release behavior, antibacterial properties and biocompatibility have been evaluated. The interest of CAM loaded samples is nowadays enhanced for biomedical applications since this antibiotic has been demonstrated to be efficient for the treatment of cancer. Melt electrospinning has been selected as an ideal preparation process because it avoids the use of toxic solvents which are harmful to the environment and could be problematic for biomedical applications. Read More

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Engineering atorvastatin loaded Mg-Mn/LDH nanoparticles and their composite with PLGA for bone tissue applications.

Int J Pharm 2021 Jul 19:120901. Epub 2021 Jul 19.

Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, Tehran, Iran.

The impact of mixing method in conventional co-precipitation synthesis of layered double hydroxides (LDHs), on particle size, size distribution and drug loading capacity is reported. Synthesis of Mg (II)/Mn (III)-LDH nano-platelets was performed at constant pH using three different mixing systems, magnetic stirrer, mechanical mixer, and homogenizer at ambient temperature and a fixed Mg/Mn ratio of 3/1. The LDH characterization results showed that mechanical mixing and homogenization lead to production of very fine LDH nano-platelets (about 90-140nm), with narrow particle size distribution. Read More

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Production and Stability of Amorphous Solid Dispersions Produced by a Freeze-drying Method from DMSO.

Int J Pharm 2021 Jul 19:120902. Epub 2021 Jul 19.

School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland. Electronic address:

Freeze drying is known to be able to produce an amorphous product, but this approach has been mostly used with water-based media. With APIs which are virtually water insoluble, a more appropriate freeze-drying medium would be an organic solvent. Little is known about this approach in terms of forming a stable freeze-dried amorphous product stabilized by small molecule excipient out of organic solvents. Read More

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Gas exchange and dive behaviour in the diving beetle Platynectes decempunctatus (Coleoptera: Dytiscidae).

J Insect Physiol 2021 Jul 19:104286. Epub 2021 Jul 19.

Department of Ecology and Evolutionary Biology, School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.

Many aquatic insects use bubbles on the body surface to store and supply O for their dives. There are two types of bubbles: air stores, which store O gained from air at the surface, and gas gills that allow passive extraction of O from water. Many insects using air stores and gas gills return to the surface to replenish their bubbles and, therefore, their requirement for O influences dive behaviour. Read More

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Proteome plasticity in response to persistent environmental change.

Mol Cell 2021 Jul 13. Epub 2021 Jul 13.

Buck Institute for Research on Aging, 8001 Redwood Blvd., Novato, CA 94945, USA; USC Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave., Los Angeles, CA 90191, USA. Electronic address:

Temperature is a variable component of the environment, and all organisms must deal with or adapt to temperature change. Acute temperature change activates cellular stress responses, resulting in refolding or removal of damaged proteins. However, how organisms adapt to long-term temperature change remains largely unexplored. Read More

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Phase Analysis of Australian Uranium Ore Concentrates Determined by Variable Temperature Synchrotron Powder X-ray Diffraction.

Inorg Chem 2021 Jul 22. Epub 2021 Jul 22.

College of Science and Engineering, Flinders University, Adelaide, South Australia 5001, Australia.

The chemical speciation of uranium oxides is sensitive to the provenance of the samples and their storage conditions. Here, we use diffraction methods to characterize the phases found in three aged (>10 years) uranium ore concentrates of different origins as well as in situ analysis of the thermally induced structural transitions of these materials. The structures of the crystalline phases found in the three samples have been refined, using high-resolution synchrotron X-ray diffraction data. Read More

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After 200 years: the structure of bleach and characterization of hypohalite ions by single-crystal X-ray diffraction.

Angew Chem Int Ed Engl 2021 Jul 22. Epub 2021 Jul 22.

McGill University, Chemistry, 801 Sherbrooke St. W., H3A 0B8, Montreal, CANADA.

We report the first X-ray single crystal structures of hypochlorite (ClO - ) and hypobromite (BrO - ) salts, including hydrated sodium hypochlorite - a staple of the chlorine industry and ubiquitous bleaching and disinfection agent for almost 200 years. The structures, supported by variable-temperature Raman spectroscopy on individual crystals and periodic density-functional theory (DFT) calculations, provide insight into solid-state geometry and supramolecular chemistry of hypohalite ions. Read More

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Neither low salivary amylase activity, cooling cooked white rice, nor single nucleotide polymorphisms in starch-digesting enzymes reduce glycemic index or starch digestibility: a randomized, crossover trial in healthy adults.

Am J Clin Nutr 2021 Jul 22. Epub 2021 Jul 22.

INQUIS Clinical Research, Ltd (formerly GI Labs), Toronto, Ontario, Canada.

Background: It was suggested that low salivary-amylase activity (SAA) and cooling or stir-frying cooked starch decreases its digestibility and glycemic index.

Objective: We determined the effects of SAA, cooling, and single-nucleotide polymorphisms (SNPs) in the salivary amylase (AMY1), pancreatic amylase (AMY2A, AMY2B), maltase-glucoamylase (MGAM), and sucrase-isomaltase (SI) genes on starch digestibility and glycemic index of cooked polished rice.

Methods: Healthy subjects [pilot, n = 12; main, n = 20 with low-SAA (<50 U/mL), and n = 20 with high-SAA (>105 U/mL)] consumed test meals containing 25 g (pilot) or 50 g (main) available carbohydrate at a contract research organization using open-label (pilot) or assessor-blinded (main), randomized, crossover, Latin-square designs (trial registration: NCT03667963). Read More

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Estimating the effect of tracking tag weight on insect movement using video analysis: A case study with a flightless orthopteran.

PLoS One 2021 22;16(7):e0255117. Epub 2021 Jul 22.

Department of Biology and Ecology, Faculty of Science, University of Ostrava, Ostrava, Czechia.

In this study, we describe an inexpensive and rapid method of using video analysis and identity tracking to measure the effects of tag weight on insect movement. In a laboratory experiment, we assessed the tag weight and associated context-dependent effects on movement, choosing temperature as a factor known to affect insect movement and behavior. We recorded the movements of groups of flightless adult crickets Gryllus locorojo (Orthoptera:Gryllidae) as affected by no tag (control); by light, medium, or heavy tags (198. Read More

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Molecular and physiological characterization of Fusarium strains associated with different diseases in date palm.

PLoS One 2021 22;16(7):e0254170. Epub 2021 Jul 22.

Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia.

Several species of Fusarium cause serious diseases in date palm worldwide. In the present work, 14 SSR markers were used to assess the genetic variation of Fusarium strains isolated from diseased trees in Saudi Arabia. We also studied the effect of different temperatures on mycelial growth of these strains. Read More

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Fission yeast Rad8/HLTF facilitates Rad52-dependent chromosomal rearrangements through PCNA lysine 107 ubiquitination.

PLoS Genet 2021 Jul 22;17(7):e1009671. Epub 2021 Jul 22.

Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Japan.

Gross chromosomal rearrangements (GCRs), including translocation, deletion, and inversion, can cause cell death and genetic diseases such as cancer in multicellular organisms. Rad51, a DNA strand exchange protein, suppresses GCRs by repairing spontaneous DNA damage through a conservative way of homologous recombination, gene conversion. On the other hand, Rad52 that catalyzes single-strand annealing (SSA) causes GCRs using homologous sequences. Read More

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Heat-Related Emergency Department Visits During the Northwestern Heat Wave - United States, June 2021.

MMWR Morb Mortal Wkly Rep 2021 Jul 23;70(29):1020-1021. Epub 2021 Jul 23.

Record high temperatures are occurring more frequently in the United States, and climate change is causing heat waves to become more intense (1), directly impacting human health, including heat-related illnesses and deaths. On average, approximately 700 heat-related deaths occur in the United States each year (2). In the northwestern United States, increasing temperatures are projected to cause significant adverse health effects in the coming years (3). Read More

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Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure.

Physiol Biochem Zool 2021 Sep-Oct;94(5):330-337

AbstractNoninvasive measurement of stress-related alterations in fecal glucocorticoid metabolite (fGCM) concentrations has considerable potential for quantifying physiological responses to very hot weather in free-ranging birds, but practical considerations related to sampling will often make this method feasible only for habituated study populations. Here we evaluate an alternate approach, the use of experimentally manipulated thermal environments for evaluating stress responses to high environmental temperatures in wild-caught birds housed in captivity. Using an enzyme immunoassay utilizing antibodies against 5ß-pregnane-3α,11ß,21-triol-20-one-CMO∶BSA (tetrahydrocorticosterone), we quantified fGCMs in captive individuals of three southern African arid-zone species (southern pied babblers [], white-browed sparrow-weavers [], and southern yellow-billed hornbills []) experiencing daily air temperature maxima () ranging from 30°-32°C to 42°-44°C. Read More

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Clinical accuracy of non-contact forehead infrared thermometer and infrared tympanic thermometer in postoperative adult patients: A comparative study.

Authors:
Norihiro Kameda

J Perioper Pract 2021 Jul 22:17504589211022314. Epub 2021 Jul 22.

Graduate school of Nursing Sciences, St. Luke's International University, Tokyo, Japan.

Core temperature monitoring is important for the assessment and prevention of possible postoperative complications. The aim of the present study was to examine the agreement between the core temperature values and the forehead, tympanic membrane and axillary values in postoperative adult patients in clinical practice. The study measured the core temperature of 65 patients undergoing scheduled abdominal surgery using SpotOn™ and compared these with those obtained using non-contact forehead infrared, infrared tympanic and axillary thermometers. Read More

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