69,159 results match your criteria college degrees


Sampling rate influences the regularity analysis of temporal domain measures of walking more than spatial domain measures.

Gait Posture 2021 Jun 4;88:216-220. Epub 2021 Jun 4.

Center for Research in Human Movement Variability, Department of Biomechanics, University of Nebraska at Omaha, 6160 University Drive, Omaha, NE, 68182-0860, United States; VA Nebraska-Western Iowa Health Care System, VA Research Service, 4104 Woolworth Avenue (112), Omaha, NE, 68105, United States; Department of Health and Kinesiology, Texas A&M University, 2929 Research Parkway, College Station, TX, 77843, United States. Electronic address:

Background: The spatiotemporal dynamics of stepping can provide useful information about walking performance. Most often, the identification of gait motion is performed using 3-D cinematography. The sampling rate of motion capture systems may influence the accuracy of these measures albeit in varying degrees for measures within the spatial versus temporal domain. Read More

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Phthalic acid esters degradation by a novel marine bacterial strain Mycolicibacterium phocaicum RL-HY01: Characterization, metabolic pathway and bioaugmentation.

Sci Total Environ 2021 Jun 5;791:148303. Epub 2021 Jun 5.

Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518108, China; College of Coastal Agricultural Sciences, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China. Electronic address:

Phthalic acid esters (PAEs) are one of the most widely used plasticizers and the well-studied environmental pollutants with endocrine disrupting properties. Investigation about PAEs in terrestrial ecosystem has been extensively conducted while the fate of PAEs in marine environment remains underexplored. In this study, a novel di-(2-ethylhexyl) phthalate (DEHP) degrading marine bacterial strain, Mycolicibacterium phocaicum RL-HY01, was isolated and characterized from intertidal sediments. Read More

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Mixed biochar obtained by the co-pyrolysis of shrimp shell with corn straw: Co-pyrolysis characteristics and its adsorption capability.

Chemosphere 2021 Jun 5;282:131116. Epub 2021 Jun 5.

College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China. Electronic address:

The co-pyrolysis characteristics of shrimp shell (SS) with corn straw (CS) were investigated by comprehensive characterization to reveal the synergistic effects and further discuss the adsorption capability. TGA results showed that pyrolysis behavior and reactivity were improved with the increase of heating rate and doping ratio of CS. Flynn-Wall-Ozawa (FWO) and distributed activation energy model (DAEM) indicated that co-pyrolysis can effectively reduce energy consumption and promote the decomposition of CaCO. Read More

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Assessment of hexavalent chromium (VI) biosorption competence of indigenous Aspergillus tubingensis AF3 isolated from bauxite mine tailing.

Chemosphere 2021 Jun 1;282:131055. Epub 2021 Jun 1.

Faculty of Electrical and Electronics Engineering, Ton Duc Thang, University, Ho Chi Minh City, Viet Nam. Electronic address:

The intention of this research was to find the most eminent metal tolerant and absorbing autochthonous fungal species from the waste dump of a bauxite mine. Out of the 4 (BI-1, BI-II, BI-III, and BI-IV) predominant isolates, BI-II had an excellent metal tolerance potential against most of the metals in the subsequent order: Cr(VI) (1500), Cu(II) (600), Pb(II) (500), and Zn(II) (500-1500 μg mL). BI-II had shown tolerance to Cr(VI) up to 1500 mg L. Read More

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Waterborne electrospinning of fluorine-free stretchable nanofiber membranes with waterproof and breathable capabilities for protective textiles.

J Colloid Interface Sci 2021 May 30;602:105-114. Epub 2021 May 30.

Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China. Electronic address:

Hypothesis: Smart membranes with robust liquid water resistance and water vapor transmission capabilities have attracted growing attentions in personal protective equipment and environmental protection. However, current fluorine-free waterproof and breathable nanofibrous membranes are usually prepared through toxic solvent-based electrospinning, which raises great concerns about their environmental impacts.

Experiments: We develop environmentally friendly fluorine-free polyurethane nanofibrous membranes with robust waterproof and breathable performances via waterborne electrospinning without post-coating treatment. Read More

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Exploring the role of Fe species from biochar-iron composites in the removal and long-term immobilization of SeO against competing oxyanions.

J Hazard Mater 2021 Jun 6;418:126311. Epub 2021 Jun 6.

College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.

Carbothermal reduction is a convenient and cost-effective method to produce biochar (BC) supported iron-based nano-particles (INP) for oxyanion contaminants removal. However, considering the possible desorption of the target oxyanion during change of the surrounding environment, the detailed removal mechanisms remain unclear and the long-term efficiency of different INPs cannot be predicted. In this study, different BC/Fe composites were synthesized by controlling the pyrolysis temperatures (500-800 °C). Read More

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Left atrial strain by speckle tracking predicts atrial fibrosis in patients undergoing heart transplantation.

Eur Heart J Cardiovasc Imaging 2021 Jun 12. Epub 2021 Jun 12.

Department of Public Health and Clinical Medicine, Umeå University and Heart Centre, Umeå, Sweden.

Aims: In patients with heart failure (HF), chronically raised left ventricular (LV) filling pressures lead to progressive left atrial (LA) dysfunction and fibrosis. We aimed to assess the correlation of LA reservoir strain (peak atrial longitudinal strain, PALS) by speckle tracking echocardiography (STE) and LA fibrosis assessed by myocardial biopsy in patients undergoing heart transplantation (HTx).

Methods And Results: Forty-eight patients with advanced HF [mean age 51. Read More

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Can flowers affect land surface albedo and soil microclimates?

Int J Biometeorol 2021 Jun 12. Epub 2021 Jun 12.

Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.

The phenology of vegetation, namely leaf-out and senescence, can influence the Earth's climate over regional spatial scales and long time periods (e.g., over 30 years or more), in addition to microclimates over local spatial scales and shorter time periods (weeks to months). Read More

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Non-covalent and covalent immobilization of papain onto TiC MXene nanosheets.

Enzyme Microb Technol 2021 Aug 12;148:109817. Epub 2021 May 12.

Guangxi Key Laboratory of Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning, 530008, People's Republic of China. Electronic address:

Papain was immobilized onto TiC MXene nanosheets by physical adsorption and physical adsorption combined with covalent crosslinking with glutaraldehyde. TiC MXene nanosheets were prepared by hydrofluoric acid etching method. The resulting products were well characterized by SEM, BET, XRD, FTIR, XPS. Read More

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Selenogenome and AMPK signal insight into the protective effect of dietary selenium on chronic heat stress-induced hepatic metabolic disorder in growing pigs.

J Anim Sci Biotechnol 2021 Jun 12;12(1):68. Epub 2021 Jun 12.

Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.

Background: Chronic heat stress (CHS) disrupts hepatic metabolic homeostasis and jeopardizes product quality of pigs. Selenium (Se) may regulate the metabolic state through affect selenoprotein. Thus, we investigate the protective effect of dietary hydroxy-4-methylselenobutanoic acid (HMSeBA) on CHS induced hepatic metabolic disorder in growing pigs, and the corresponding response of selenoprotein. Read More

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Effect of sequentially fed high protein, hydrolyzed protein, and high fiber diets on the fecal microbiota of healthy dogs: a cross-over study.

Anim Microbiome 2021 Jun 11;3(1):42. Epub 2021 Jun 11.

Department of Veterinary Clinical Sciences, Melbourne Veterinary School, The University of Melbourne, Werribee, VIC, 3030, Australia.

Background: Dietary content and environmental factors can shape the gut microbiota, and consequently, the way the gut microbiota metabolizes fats, carbohydrates, and proteins, affecting overall health of the host. We evaluated the impact of 3 diets (all meat [raw], high-insoluble fiber dry extruded diet and hydrolyzed protein dry extruded diet) on the gut microbiota of healthy dogs in a cross-over sequential study.

Results: We showed that diet can have an effect on the gut microbiome in dogs, which was influenced by the order of feeding. Read More

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Infrared thermography for assessment of thoracic paravertebral block: a prospective observational study.

BMC Anesthesiol 2021 Jun 11;21(1):168. Epub 2021 Jun 11.

Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Background: There was no "gold standard" to assess the success or failure of thoracic paravertebral block (TPVB). Measurement of skin temperature with infrared thermography (IT) would be a reliable method to evaluate the effectiveness of regional blocks. This study aimed to explore the feasibility of using skin temperature difference (Td) determined by IT between the blocked and unblocked side to predict the spread of TPVB. Read More

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Controlled assembly of nitrogen-doped iron carbide nanoparticles on reduced graphene oxide for electrochemical reduction of carbon dioxide to syngas.

J Colloid Interface Sci 2021 May 29;601:877-885. Epub 2021 May 29.

College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China. Electronic address:

The electrocatalytic CO reduction reaction (CORR) decreases the amount of greenhouse gas in the atmosphere while enabling a closed carbon cycle. Herein, iron oleate was used as a precursor to produce oleic acid-coated triiron tetraoxide nanoparticles ([email protected] NPs) by pyrolysis, which was then assembled with reduced graphene oxide (rGO) and doped with dicyandiamide as a nitrogen source to obtain nitrogen-doped iron carbide nanoparticles assembled on rGO (N-FeC/rGO NPs). The catalyst prepared by nitrogen doping at 800 °C with an [email protected] NPs to rGO weight ratio of 20:1 showed good activity and stability for the CORR. Read More

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Enhanced electrochemical properties of Ni-rich layered cathode materials via Mg and Tico-doping for lithium-ion batteries.

J Colloid Interface Sci 2021 May 29;601:853-862. Epub 2021 May 29.

College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, PR China. Electronic address:

To optimize the electrochemical performance of Ni-rich cathode materials, the 0.005 mol of Mg and 0.005 mol of Tico-doping LiNiCoMnO composite powders, labeled as NCM-11, are successfully prepared by being calcinated at 750 °C for 15 h following by an appropriate post-treatment, which are confirmed by XRD, EDS and XPS. Read More

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Improved oxygen activation over metal-organic-frameworks derived and zinc-modulated [email protected] catalyst for boosting indoor gaseous formaldehyde oxidation at room temperature.

J Colloid Interface Sci 2021 May 30;601:833-842. Epub 2021 May 30.

College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China; Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610065, China. Electronic address:

The indoor low-concentration formaldehyde (HCHO) removal in cobalt-based catalysts is still a "hot potato". In this work, metal-organic-frameworks (MOF)-derived and Zinc (Zn)-modulated new cobalt nanoparticles catalyst ([email protected]) was designed and prepared. The [email protected] performed outstanding elimination activities for ~1 ppm HCHO at 25 °C. Read More

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Discovery of novel class of histone deacetylase inhibitors as potential anticancer agents.

Bioorg Med Chem 2021 Jun 8;42:116251. Epub 2021 Jun 8.

Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates. Electronic address:

Selective inhibition of histone deacetylases (HDACs) is an important strategy in the field of anticancer drug discovery. However, lack of inhibitors that possess high selectivity toward certain HDACs isozymes is associated with adverse side effects that limits their clinical applications. We have initiated a collaborative initiatives between multi-institutions aimed at the discovery of novel and selective HDACs inhibitors. Read More

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Bio-electrochemically extracted nitrogen from residual resources for microbial protein production.

Bioresour Technol 2021 Jun 8;337:125353. Epub 2021 Jun 8.

Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:

Upcycling of nutrients from residual resources for producing microbial protein (MP) is an attractive method to valorize residues. In this study, we investigated bio-electrochemical methods to recover ammonia-N, for further production of MP. Reject water and digestate were used for ammonia-N recovery in microbial fuel cell (MFC) system. Read More

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Conjugated linoleic acid improves meiotic spindle morphology and developmental competence of heat-stressed bovine oocyte.

Theriogenology 2021 May 27;172:67-72. Epub 2021 May 27.

Pasargad Institute for Advanced Innovative Solutions (PIAIS), Khatam University, Tehran 1991633356, Iran.

This study was conducted to elucidate the effects of introducing conjugated linoleic acid (CLA) on meiotic spindle organization of heat stressed (HS) matured oocytes and the resulting blastocysts DNA methylation as well as the expression of the genes involved in DNA methylation (DNMT3a, DNMT3b and DNMT1). Immature bovine oocytes were cultured at 41 °C for the first 12 h and 38.5 °C for the second 12 h of maturation time in the presence of 0 and 50 μM of CLA (HS and HS + CLA groups, respectively). Read More

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Aspartic protease-pepstatin A interactions: Structural insights on the thermal inactivation mechanism.

Biochimie 2021 Jun 8. Epub 2021 Jun 8.

Kaypeeyes Biotech Private Limited, R&D Center, Hebbal Industrial Area, Mysuru, 570016, Karnataka, India. Electronic address:

Aspartic proteases are the targets for structure-based drug design for their role in physiological processes and pharmaceutical applications. Structural insights into the thermal inactivation mechanism of an aspartic protease in presence and absence of bound pepstatin A have been obtained by kinetics of thermal inactivation, CD, fluorescence spectroscopy and molecular dynamic simulations. The irreversible thermal inactivation of the aspartic protease comprised of loss of tertiary and secondary structures succeeded by the loss of activity, autolysis and aggregation The enthalpy and entropy of thermal inactivation of the enzyme in presence of pepstatin A increased from 81. Read More

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Stearic acid esterified pectin: Preparation, characterization, and application in edible hydrophobic pectin/chitosan composite films.

Int J Biol Macromol 2021 Jun 8. Epub 2021 Jun 8.

College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Marine Food, Guangdong Provincial Modern Agricultural Science and Technology Innovation Center, Zhanjiang 524088, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524025, China. Electronic address:

This work investigated the modification of low-methoxy pectin with stearic anhydride through microwave action with 4-dimethylaminopyridine as catalyst. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses indicated that stearic acid was grafted on the pectin through esterification reaction, with the maximum stearic acid grafting ratio (SGR) of 10.7% for the modified pectin. Read More

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Downhill Running Decreases the Acetylation of Tubulins and Impairs Autophagosome Degradation in Rat Skeletal Muscle.

Med Sci Sports Exerc 2021 Jun 11. Epub 2021 Jun 11.

School of Sports Science, Beijing Sport University, Beijing, CHINA College of Rehabilitation, Gannan Medical University, Ganzhou, CHINA.

Purpose: This study was designed to probe the effect of downhill running on microtubule acetylation and autophagic flux in rat skeletal muscle.

Methods: Sprague-Dawley rats were subjected to an exercise protocol of a 90-min downhill run with a slope of -16° and a speed of 16 m/min, and then the soleus was sampled at 0 h, 12 h, 24 h, 48 h, and 72 h after exercise. Protein expression levels of microtubule-associated protein 1 light chain 3 (LC3), p62/sequestosome 1 (p62), α-tubulin and acetylated α-tubulin (AcK40 α-tubulin) were detected by Western blotting. Read More

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Remediation of textile industry organic dye waste by photocatalysis using eggshell impregnated ZnO/CuO nanocomposite.

Authors:
Mekdes Gerawork

Water Sci Technol 2021 Jun;83(11):2753-2761

Department of Chemistry, College of Natural and Computational Science, Debre Berhan University, P.O. Box 445 Debre Berhan, Ethiopia E-mail:

Heterogeneous photocatalysis using nanocomposites is of great research interest in the treatment of industrial wastewater. The impregnated photocatalyst was produced by liquid state reaction of ZnO/CuO nanocomposite with extracted eggshells. The structure, functional group, metal composition, bandgap, and photocatalytic activity of the nanocomposites were characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, atomic absorption spectrometry, and UV-Vis spectroscopy, respectively, in the absence and presence of eggshells. Read More

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An Anterior Cruciate Ligament In Vitro Rupture Model Based on Clinical Imaging[Formula: see text].

Am J Sports Med 2021 Jun 11:3635465211017145. Epub 2021 Jun 11.

Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK.

Background: Biomechanical studies on anterior cruciate ligament (ACL) injuries and reconstructions are based on ACL transection instead of realistic injury trauma.

Purpose: To replicate an ACL injury in vitro and compare the laxity that occurs with that after an isolated ACL transection injury before and after ACL reconstruction.

Study Design: Controlled laboratory study. Read More

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Effect of Red-to-Near Infrared Light and a Nitric Oxide Donor on the Oxygen Consumption of Isolated Cytochrome c Oxidase.

Photobiomodul Photomed Laser Surg 2021 Jun 10. Epub 2021 Jun 10.

Department of Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.

To study the effects of 670 and 830 nm irradiation on oxygen consumption by cytochrome c oxidase (CCO) in a Clark electrode type reaction chamber. To explore the effect of irradiation on the nitric oxide (NO) donor-induced inhibition of oxygen consumption. Most theories of photobiomodulation (PBM) involve the enzyme CCO as a cellular target for red-to-near infrared light (R-NIR) irradiation. Read More

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Coping with stress in a warming Gulf: the postlarval American lobster's cellular stress response under future warming scenarios.

Cell Stress Chaperones 2021 Jun 11. Epub 2021 Jun 11.

School of Marine Sciences, University of Maine, Orono, ME, 04469, USA.

The Gulf of the Maine (GoM) is one of the fastest warming bodies of water in the world, posing serious physiological challenges to its marine inhabitants. Marine organisms can cope with the cellular and molecular stresses created by climate change through changes in gene expression. We used transcriptomics to examine how exposure to current summer temperatures (16 °C) or temperature regimes reflective of projected moderate and severe warming conditions (18 °C and 22 °C, respectively) during larval development alters expression of transcripts affiliated with the cellular stress response (CSR) in postlarval American lobsters (Homarus americanus). Read More

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Sterilization and sanitizing of 3D-printed personal protective equipment using polypropylene and a Single Wall design.

3D Print Med 2021 Jun 11;7(1):16. Epub 2021 Jun 11.

Department of Basic Sciences, Kansas City University, College of Medicine, Farber-McIntire Campus, Joplin, MO, USA.

Background: The emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic during the fall of 2019 and into the spring of 2020 has led to an increased demand of disposable N95 respirators and other types of personal protective equipment (PPE) as a way to prevent virus spread and help ensure the safety of healthcare workers. The sudden demand led to rapid modification, development, and dissemination of 3D printed PPE. The goal of this study was to determine the inherent sterility and re-sterilizing ability of 3D printed PPE in order to provide sterile equipment to the healthcare field and the general public. Read More

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One-step self-assembly of curcumin-loaded zein/sophorolipid nanoparticles: physicochemical stability, redispersibility, solubility and bioaccessibility.

Food Funct 2021 Jun 11. Epub 2021 Jun 11.

College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, People's Republic of China.

Curcumin, a polyphenolic compound isolated from turmeric, exhibits various biological activities. The application of this nutraceutical in foods, however, is limited due to its extreme hydrophobicity, inferior stability, and poor bioaccessibility. The purpose of this paper is to prepare alcohol-free curcumin-loaded zein/sophorolipid nanoparticles (Cur-Z/SNPs) by one-step self-assembly to overcome the abovementioned challenges of curcumin. Read More

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Analysis of sagittal curvature and its influencing factors in adolescent idiopathic scoliosis.

Medicine (Baltimore) 2021 Jun;100(23):e26274

Department of Anatomy, Inner Mongolia Medical University.

Abstract: This study aimed to explore the characteristics of changes in the sagittal arrangement of the spine between adolescent patients with idiopathic scoliosis (AIS) and normal adolescents, the risk factors for AIS and the factors affecting the progress of AIS.X-ray images of the full length of the spine in standing position were taken in AIS patients and normal adolescents. Radiographic measurements made at intermediate follow-up included the following:C1 and C2 cervical lordosis and C2 - C7 curvature of cervical lordosis, C2-C7sagittal horizontal distance (C2-C7SagittalVerticalAxis, C2-C7SVA), TS-CL, after thoracic lobe (Thoracic Kyphosis, TK), thoracic lumbar segment Angle (thoracolumbar kyphosis, [TLK]), lumbar lordosis Angle (Lumbar Lordosis, LL), sacral slope Angle (Sacrum Slope, SS), pelvic tilt Angle (Pelvic Tilt, PT), pelvic incidence (PI), L5 Incidence (Lumbar5 Slope (L5S), L5 incidence (Lumbar5 Incidence (L5I), sagittal horizontal distance (CSVA), lower depression Angle of the 2nd cervical spine. Read More

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The pivotal roles of the host immune response in the fine-tuning the infection and the development of the vaccines for SARS-CoV-2.

Hum Vaccin Immunother 2021 Jun 11:1-13. Epub 2021 Jun 11.

Department of Microbiology, College of Veterinary Medicine, King Faisal University, Saudi Arabia.

SARS-CoV2 infection induces various degrees of infections ranging from asymptomatic to severe cases and death. Virus/host interplay contributes substantially to these outcomes. This highlights the potential roles of the host immune system in fighting virus infections. Read More

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β-cyclodextrin chitosan-based hydrogels with tunable pH-responsive properties for controlled release of acyclovir: design, characterization, safety, and pharmacokinetic evaluation.

Drug Deliv 2021 Dec;28(1):1093-1108

Department of Pharmacy, The Women University, Multan, Pakistan.

In this work, series of pH-responsive hydrogels (FMA1-FMA9) were synthesized, characterized, and evaluated as potential carrier for oral delivery of an antiviral drug, acyclovir (ACV). Different proportions of β-cyclodextrin (β-CD), chitosan (CS), methacrylic acid (MAA) and N' N'-methylenebis-acrylamide (MBA) were used to fabricate hydrogels free radical polymerization technique. Fourier transform infrared spectroscopy confirmed fabrication of new polymeric network, with successful incorporation of ACV. Read More

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December 2021