229,181 results match your criteria time temperature


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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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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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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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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Molecular Engineering onto Ru Bis(1,2-diphenylphosphinoethane) Synthon: Toward an Original Organometallic Gelator.

Inorg Chem 2021 Jul 22. Epub 2021 Jul 22.

Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes F-35000, France.

In this article, we report the successful molecular engineering of Ru bis-acetylides that led for the first time to a gelator and more specifically in aromatic solvents. By means of a nonlinear ligand and an extended aromatic platform, the bulky Ru bis-acetylides were able to self-assemble into lamellar structures as evidenced by scanning electron microscopy (SEM) in benzene, toluene, and - and -xylene, which in turn induced gelation of the solution with a critical gelation concentration of 30 mg/mL. Nuclear magnetic resonance (NMR), variable temperature (VT)-NMR, and Fourier transform infrared (FT-IR) spectroscopies evidenced that hydrogen bonds are mainly responsible for the self-organization. Read More

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Low-Power Laser Ignition of an Antenna-Type Secondary Energetic Copper Complex: Synthesis, Characterization, Evaluation, and Ignition Mechanism Studies.

Inorg Chem 2021 Jul 22. Epub 2021 Jul 22.

Department of Chemistry, Ludwig Maximilian University Munich, München 81377, Germany.

In recent years, development of new energetic compounds and formulations, suitable for ignition with relatively low-power lasers, is a highly active and competitive field of research. The main goal of these efforts is focused on achieving and providing much safer solutions for various detonator and initiator systems. In this work, we prepared, characterized, and studied thermal and ignition properties of a new laser-ignitable compound, based on the 5,6-bis(ethylnitroamino)-'2,'3-dihydroxypyrazine-2,3-bis(carboximidamide) (DS3) proligand. Read More

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Developing Longer-Lived Single Molecule Junctions with a Functional Flexible Electrode.

Small 2021 Jul 22:e2101911. Epub 2021 Jul 22.

The State Key Laboratory of Refractories and Metallurgy, the Institute of Advanced Materials and Nanotechnology, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.

Creating single-molecule junctions with a long-lived lifetime at room temperature is an open challenge. Finding simple and efficient approaches to increase the durability of single-molecule junction is also of practical value in molecular electronics. Here it is shown that a flexible gold-coated nanopipette electrode can be utilized in scanning tunneling microscope (STM) break-junction measurements to efficiently enhance the stability of molecular junctions by comparing with the measurements using conventional solid gold probes. Read More

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Biosynthesis of Cyclic Lipopeptides by Bacillus velezensis Bs006 and its Antagonistic Activity are Modulated by the Temperature and Culture Media Conditions.

Curr Microbiol 2021 Jul 22. Epub 2021 Jul 22.

Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, Km 14 vía Bogotá a Mosquera, 250047, Mosquera, Colombia.

Antagonistic activity of strains from Bacillus species has made them among the preferred agricultural biological control agents against phytopathogenic fungi. These microorganisms' success is mostly based on the production of antagonistic secondary metabolites, mainly those of the non-ribosomal cyclic lipopeptides (CLPs) nature, which can affect phytopathogens directly (iturins and fengycins) or indirectly (surfactins and fengycins). However, abiotic factors in the target site can influence the behavior of the biocontrol traits, but to date, few studies attempting to decipher this kind of interaction have been conducted. Read More

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Continuous Flow Synthesis of Persistent Luminescent Chromium-Doped Zinc Gallate Nanoparticles.

J Phys Chem Lett 2021 Jul 22:7067-7075. Epub 2021 Jul 22.

Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing 100190, China.

Near-infrared persistent luminescent (or afterglow) nanoparticles with the biologically appropriate size are promising materials for background-free imaging applications, while the conventional batch synthesis hardly allows for reproducibility in controlling particle size because of the random variations of reaction parameters. Here, highly efficient chemistry was matched with an automated continuous flow approach for directly synthesizing differently sized ZnGaO:Cr (ZGC) nanoparticles exhibiting long persistent luminescence. The key flow factors responsible for regulating the particle formation process, especially the high pressure-temperature and varied residence time, were investigated to be able to tune the particle size from 2 to 6 nm and to improve the persistent luminescence. Read More

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In Situ Temperature-Compensated DNA Hybridization Detection Using a Dual-Channel Optical Fiber Sensor.

Anal Chem 2021 Jul 22. Epub 2021 Jul 22.

College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China.

A multifunction, high-sensitivity, and temperature-compensated optical fiber DNA hybridization sensor combining surface plasmon resonance (SPR) and Mach-Zehnder interference (MZI) has been designed and implemented. We demonstrate, for the first time to our knowledge, the dual-parameter measurement of temperature and refractive index (RI) by simultaneously using SPR and MZI in a simple single-mode fiber (SMF)-no-core fiber (NCF)-SMF structure. The experimental results show RI sensitivities of 930 and 1899 nm/RIU and temperature sensitivities of 0. Read More

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The Effect of Nixtamalization Extrusion Process and Tortillas Making on the Stability of Anthocyanins from Blue Corn through the Kinetic and Thermodynamic Parameters.

Plant Foods Hum Nutr 2021 Jul 22. Epub 2021 Jul 22.

Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora (ITSON), Sonora, 85000, Cd. Obregón, México.

The blue corn-based products are considered functional foods due to their high concentration of anthocyanins. The aim of this study was to estimate the kinetic and thermodynamic parameters of the thermal degradation of anthocyanins from extruded nixtamalized corn products. A comparative study of anthocyanins thermal stability in these matrices in a buffer solution (pH 2. Read More

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The correlation between phase transition and photoluminescence properties of CsPbX (X= Cl, Br, I) perovskite nanocrystals.

Nanoscale Adv 2020 Oct 6;2(10):4390-4394. Epub 2020 Jul 6.

Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC 29634, USA.

We report a correlation between the structural phase transition of CsPbX (X=Cl, Br, I) nanocrystals (NCs) and their temperature dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL). In constrast to CsPbBr and CsPbI NCs which exhibited a continuous blue shift in their bandgap with increasing temperature, the CsPbCl exhibited a blue shift until ~193 K, followed by a red shift until room temperature. We attribute this change from a blue to a red shift to a structural phase transtion in CsPbCl, which also manifested in the temperature dependent TRPL. Read More

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October 2020

Functional expression and characterization of a novel aminopeptidase B from in .

Authors:
Peng Song Wei Feng

3 Biotech 2021 Aug 6;11(8):366. Epub 2021 Jul 6.

School of Life Sciences, Liaocheng University, Liaocheng, 252000 China.

A novel aminopeptidase B (APB-AN) was identified from CGMCC 3.1454 for the first time and was cloned and expressed in . The mature enzyme of approximately 100 kDa was purified for characterization. Read More

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Observation on the clinical effect of high-dose Intravenous Immunoglobulin combined with low-dose prednisone acetate in the treatment of patients with Kawasaki Disease.

Pak J Med Sci 2021 Jul-Aug;37(4):1122-1127

Hai-tao Cao, Department of Laboratory Medicine, Army 82nd Group Military Hospital, Baoding 071000, China.

Objective: To evaluate the clinical effect of high-dose intravenous immunoglobulin (HDIVIG) single dose and pulse therapy combined with small-dose prednisone acetate in the treatment of patients with Kawasaki disease (KD).

Methods: Eighty patients with KD from Baoding Children's Hospital, China, were randomly divided into two groups: the experimental group and the control group, each with 40 cases. Patients in the experimental group were treated with HDIVIG single dose, pulse therapy combined with low-dose prednisone acetate, while patients in the control group were treated with conventional-dose immunoglobulin. Read More

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December 2020

Death Zone Weather Extremes Mountaineers Have Experienced in Successful Ascents.

Front Physiol 2021 5;12:696335. Epub 2021 Jul 5.

Department of Nutritional Biochemistry, Faculty of Health Sciences, Medical University of Gdańsk, Gdańsk, Poland.

Background: Few data are available on mountaineers' survival prospects in extreme weather above 8000 m (the Death Zone). We aimed to assess Death Zone weather extremes experienced in climbing-season ascents of Everest and K2, all winter ascents of 8000 m peaks (8K) in the Himalayas and Karakoram, environmental records of human survival, and weather extremes experienced with and without oxygen support.

Materials And Methods: We analyzed 528 ascents of 8K peaks: 423 non-winter ascents without supplemental oxygen (Everest-210, K2-213), 76 ascents in winter without oxygen, and 29 in winter with oxygen. Read More

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Associations of Seasonal Variations and Meteorological Parameters with Incidences of Upper and Lower Gastrointestinal Bleeding.

J Gastroenterol Hepatol 2021 Jul 21. Epub 2021 Jul 21.

School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China.

Background: Previous studies have demonstrated the seasonal variations of non-variceal upper gastrointestinal bleeding (UGIB), but there is scanty data on lower gastrointestinal bleeding (LGIB) and the association with other meteorological parameters.

Methods: We included all patients hospitalized for UGIB and LGIB between 2009 and 2018 in Hong Kong. The monthly age- and sex-standardized GIB incidences were fitted to meteorological data including average temperature (AT), maximum temperature (MaxT), minimum temperature (MinT), temperature range (TR), average precipitation, average atmospheric pressure (AtomP) and average relative humidity after adjusting for prescriptions of aspirin, proton pump inhibitors and Helicobacter pylori eradication therapy using the autoregressive integrated moving average (ARIMA) model. Read More

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Retainable Superconductivity and Structural Transition in 1T-TaSe Under High Pressure.

Inorg Chem 2021 Jul 21. Epub 2021 Jul 21.

State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China.

As a prominent platform possessing the properties of superconductivity (SC) and charge density wave (CDW), transition-metal dichalcogenides (TMDCs) have attracted considerable attention for a long time. Moreover, extensive efforts have been devoted for exploring the SC and/or the interplay between SC and CDW in TMDCs in the past few decades. Here, we systematically investigate the electronic properties and structural evolution of 1T-TaSe under pressure. Read More

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Comparison of procedural efficacy, balloon nadir temperature, and incidence of phrenic nerve palsy between two cryoballoon technologies for pulmonary vein isolation: A systematic review and meta-analysis.

J Cardiovasc Electrophysiol 2021 Jul 21. Epub 2021 Jul 21.

Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.

Introduction: In May 2020, a novel cryoballoon system (POLARx; Boston Scientific) became available for catheter ablation of atrial fibrillation (AF). The design of the cryoballoon is comparable to the Arctic Front Advance Pro (AFA-Pro; Medtronic), but it is more compliant during freezing. We compared the procedural efficacy, biophysical parameters, and risk of phrenic nerve palsy (PNP) between the two cryoballoons. Read More

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Multi-omics profiling of a CHO cell culture system unravels the effect of culture pH on cell growth, antibody titer and product quality.

Biotechnol Bioeng 2021 Jul 21. Epub 2021 Jul 21.

Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01 Centros, Singapore, 138668, Singapore.

A robust monoclonal antibody (mAb) bioprocess requires physiological parameters such as temperature, pH, or dissolved oxygen (DO) to be well-controlled as even small variations in them could potentially impact the final product quality. For instance, pH substantially affects N-glycosylation, protein aggregation and charge variant profiles, as well as mAb productivity. However, relatively less is known about how pH jointly influences product quality and titer. Read More

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The effect of temperature on host patch exploitation by an egg parasitoid.

PLoS One 2021 21;16(7):e0254750. Epub 2021 Jul 21.

Département de sciences biologiques, Institut de recherche en biologie végétale, Université de Montréal, Montréal, Québec, Canada.

The effect of temperature during host patch exploitation by parasitoids remains poorly understood, despite its importance on female reproductive success. Under laboratory conditions, we explored the behaviour of Anaphes listronoti, an egg parasitoid of the carrot weevil, Listronotus oregonensis, when foraging on a host patch at five temperatures. Temperature had a strong effect on the female tendency to exploit the patch: A. Read More

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Performance of an affordable urine self-sampling method for human papillomavirus detection in Mexican women.

PLoS One 2021 21;16(7):e0254946. Epub 2021 Jul 21.

Facultad de Medicina, Centro de Investigación en Políticas, Población y Salud, Universidad Nacional Autónoma de México, Mexico City, Mexico.

Introduction: Urine self-sampling for human papillomavirus (HPV)-based cervical cancer screening is a non-invasive method that offers several logistical advantages and high acceptability, reducing barriers related to low screening coverage. This study developed and evaluated the performance of a low-cost urine self-sampling method for HPV-testing and explored the acceptability and feasibility of potential implementation of this alternative in routine screening.

Methods: A series of sequential laboratory assays examined the impact of several pre-analytical conditions for obtaining DNA from urine and subsequent HPV detection. Read More

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Environmental responsiveness of flowering time in cassava genotypes and associated transcriptome changes.

PLoS One 2021 21;16(7):e0253555. Epub 2021 Jul 21.

Section of Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, New York, United States of America.

Cassava is an important food security crop in tropical regions of the world. Cassava improvement by breeding is limited by its delayed and poor production of flowers, such that cassava flowering under field conditions indirectly lengthens the breeding cycle. By studying genotype and environment interaction under two Nigerian field conditions (Ubiaja and Ibadan) and three controlled temperature conditions (22°C/18°C, 28/24°C and 34/30°C (day/night)), we found that while early flowering genotypes flowered at similar times and rates under all growing conditions (unfavorable and favorable field and controlled-temperature environments), late flowering genotypes were environmentally sensitive such that they were substantially delayed in unfavorable environments. Read More

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Optimization of diosgenin extraction from Dioscorea deltoidea tubers using response surface methodology and artificial neural network modelling.

PLoS One 2021 21;16(7):e0253617. Epub 2021 Jul 21.

Department of Biochemistry, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.

Introduction: Dioscorea deltoidea var. deltoidea (Dioscoreaceae) is a valuable endangered plant of great medicinal and economic importance due to the presence of the bioactive compound diosgenin. In the present study, response surface methodology (RSM) and artificial neural network (ANN) modelling have been implemented to evaluate the diosgenin content from D. Read More

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A Simple RT-PCR Melting temperature Assay to Rapidly Screen for Widely Circulating SARS-CoV-2 Variants.

J Clin Microbiol 2021 Jul 21:JCM0084521. Epub 2021 Jul 21.

Public Health Research Institute; Center for Emerging Pathogens, Rutgers New Jersey Medical School; Institute of Genomic Medicine, Rutgers New Jersey Medical School, Newark, NJ.

. The increased transmission of SARS-CoV-2 variants of concern (VOC) which originated in the United Kingdom (B.1. Read More

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Heat-treated virus inactivation rate depends strongly on treatment procedure: illustration with SARS-CoV-2.

Appl Environ Microbiol 2021 Jul 21:AEM0031421. Epub 2021 Jul 21.

Department of Ecology & Evolutionary Biology, University of California, Los Angeles, CA, USA.

Decontamination helps limit environmental transmission of infectious agents. It is required for the safe re-use of contaminated medical, laboratory and personal protective equipment, and for the safe handling of biological samples. Heat treatment is a common decontamination method, notably used for viruses. Read More

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Changes in brain metabolites and resting-state connectivity in collegiate basketball players as a function of play time.

J Neuroimaging 2021 Jul 19. Epub 2021 Jul 19.

Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, USA.

Background And Purpose: Magnetic resonance (MR) biomarkers are emerging for sports-related traumatic brain injury (TBI), but the effect of play time has not been characterized. Our goal was to characterize brain and inflammatory marker changes as a function of play time.

Methods: Nine male players (21±2 years old) from a single collegiate basketball team were included. Read More

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Analyzing anisotropic exchange in a pentanuclear Os2Ni3 complex.

Chemistry 2021 Jul 20. Epub 2021 Jul 20.

TU Kaiserslautern Fachbereich Chemie: Technische Universitat Kaiserslautern Fachbereich Chemie, Fachbereich Chemie, GERMANY.

Spin Hamiltonian parameters of a pentanuclear Os III 2 Ni II 3 cyanometallate complex are derived from ab initio wave function based calculations, namely valence-type configuration interaction calculations with a complete active space including spin-orbit interaction (CASOCI) in a singlestep procedure. While fits of experimental data performed so far could reproduce the data but the resulting parameters were not satisfactory, the parameters derived in the present work reproduce experimental data and at the same time have a reasonable size.  Exchange interactions (both isotropic and anisotropic) obtained from CASOCI have to be scaled by a factor of 2. Read More

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