125 results match your criteria separation 772


Diversity of Necrophagous Flies (Diptera: Calliphoridae, Mesembrinellidae, and Sarcophagidae) in Anthropogenic and Preserved Environments of Five Different Phytophysiognomies in Northeastern Brazil.

Neotrop Entomol 2021 Aug 29;50(4):537-550. Epub 2021 Apr 29.

Programa de Pós-Graduação em Zoologia, Univ Federal do Pará, Belém, PA, Brazil.

The present study investigated the potential association between the richness and abundance of species of the dipteran families Calliphoridae, Mesembrinellidae, and Sarcophagidae in anthropogenic and preserved environments of five phytophysiognomies (Cerrado, Amazon forest, Palm forest, marshland, and mangrove) that occur throughout the state of Maranhão, in northeastern Brazil. We sampled 90 sites (45 preserved and 45 anthropogenic areas) where we collected 26,036 specimens: 15,023 calliphorids (11 species), 231 mesembrinellids (one species), and 10,772 sarcophagids (52 species). Four environmental factors, canopy openness, temperature, leaf litter depth, and vegetation height, contributed most to the separation of preserved and anthropogenic sites in all five phytophysiognomies. Read More

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Anthropogenic particles in sediment from an Arctic fjord.

Sci Total Environ 2021 Jun 4;772:145575. Epub 2021 Feb 4.

Norwegian Polar Institute, Fram Centre, NO-9296 Tromsø, Norway.

The research on plastic pollution is increasing worldwide but little is known about the contamination levels in the Arctic by microplastics and other anthropogenic particles (APs) such as dyed fibres. In this study, two different sampling designs were developed to collect 68 sediment subsamples in five locations in a remote Arctic fjord, Kongsfjorden, northwest of Svalbard. Those five stations composed a transect from a sewage outlet recently installed close to the northernmost settlement, Ny-Ålesund, to an offshore site. Read More

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Baseflow dynamics and multivariate analysis using bivariate and multiple wavelet coherence in an alpine endorheic river basin (Northwest China).

Sci Total Environ 2021 Jun 2;772:145013. Epub 2021 Feb 2.

School of Tourism and Geographical Sciences, Yunnan Normal University, Kunming 650500, China.

Baseflow is a component of streamflow derived from shallow and deep subsurface flows that is concurrently controlled by multiple factors. Rational estimation of baseflow is critical for understanding its spatiotemporal dynamics and influencing factors within a river basin. To address this, different filtering parameters were applied to separate the baseflow of the Heihe River Basin (HRB) in Northwest China using digital filtering methods. Read More

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Exposure to short-chain chlorinated paraffins inhibited PPARα-mediated fatty acid oxidation and stimulated aerobic glycolysis in vitro in human cells.

Sci Total Environ 2021 Jun 1;772:144957. Epub 2021 Feb 1.

CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, China.

Short-chain chlorinated paraffins (SCCPs) could disrupt fatty acid metabolism in male rat liver through activating rat PPARα signaling. However, whether this mode of action can translate to humans remained largely unclear. In this study, based on luciferase assays, C-CPs (56. Read More

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Current advances in microalgae-based bioremediation and other technologies for emerging contaminants treatment.

Sci Total Environ 2021 Jun 29;772:144918. Epub 2021 Jan 29.

Graduate Program in Environmental and Civil Engineering, University of Passo Fundo (UPF), Passo Fundo, Rio Grande do Sul 99052-900, Brazil. Electronic address:

Emerging contaminants (EC) have been detected in effluents and drinking water in concentrations that can harm to a variety of organisms. Therefore, several technologies are developed to treat these compounds, either for their complete removal or degradation in less toxic by-products. Some technologies applied to the treatment of EC, such as adsorption, advanced oxidative processes, membrane separation processes, and bioremediation through microalgal metabolism, were identified by thematic maps. Read More

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Tackling a Curious Case: Generation of Charge-Tagged Guanosine Radicals by Gas-Phase Electron Transfer and Their Characterization by UV-vis Photodissociation Action Spectroscopy and Theory.

J Am Soc Mass Spectrom 2021 Mar 10;32(3):772-785. Epub 2021 Feb 10.

Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 16610 Prague 6, Czech Republic.

We report the generation of gas-phase riboguanosine radicals that were tagged at ribose with a fixed-charge 6-(trimethylammonium)hexane-1-aminocarbonyl group. The radical generation relied on electron transfer from fluoranthene anion to noncovalent dibenzocrown-ether dication complexes which formed nucleoside cation radicals upon one-electron reduction and crown-ether ligand loss. The cation radicals were characterized by collision-induced dissociation (CID), photodissociation (UVPD), and UV-vis action spectroscopy. Read More

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Performance of a True Point-of-Care Assay for HIV-1/2 Viral Load Measurement at Antenatal and Postpartum Services.

J Acquir Immune Defic Syndr 2021 05;87(1):693-699

Instituto Nacional da Saúde, Marracuene, Mozambique.

Background: Timely viral load (VL) results during pregnancy and the postpartum period are crucial for HIV disease management and for preventing mother-to-child transmission. Point-of-care (POC) VL testing could reduce turnaround times and streamline patient management. We evaluated the diagnostic performance of the novel m-PIMA HIV-1/2 VL assay (Abbott, Chicago, IL) in Mozambique. Read More

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Biologically Plausible Class Discrimination Based Recurrent Neural Network Training for Motor Pattern Generation.

Front Neurosci 2020 12;14:772. Epub 2020 Aug 12.

School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, United States.

Biological brain stores massive amount of information. Inspired by features of the biological memory, we propose an algorithm to efficiently store different classes of spatio-temporal information in a Recurrent Neural Network (RNN). A given spatio-temporal input triggers a neuron firing pattern, known as an attractor, and it conveys information about the class to which the input belongs. Read More

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Comparative analysis of mitochondrial DNA datasets indicates that Cylicostephanus minutus represents a species complex.

Infect Genet Evol 2020 10 1;84:104487. Epub 2020 Aug 1.

Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, No. 600, Changjiang Road, Harbin, Heilongjiang Province 15000, China. Electronic address:

Cyathostomins are one kind of the most important parasites in equids. Cylicostephanus minutus is a member of the subfamily Cyathostominae. In the present study, we determined the complete mitochondrial (mt) genomes from four Cs. Read More

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October 2020

Bone microarchitecture and turnover in the irradiated human mandible.

J Craniomaxillofac Surg 2020 Aug 9;48(8):733-740. Epub 2020 Jun 9.

Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Clinical Chemistry, the Netherlands; Leiden University Medical Center, Department of Internal Medicine, Division of Endocrinology and Center for Bone Quality, Leiden, the Netherlands. Electronic address:

Objectives: The aim of this study was to assess the microarchitecture and turnover in irradiated cancellous mandibular bone and the relation with radiation dose, to elucidate the effects of radiotherapy on the mandible.

Patients And Methods: Mandibular cancellous bone biopsies were taken from irradiated patients and controls. Micro-CT scanning was performed to analyze microstructural bone parameters. Read More

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PEG/PPG-PDMS-Based Cross-Linked Copolymer Membranes Prepared by ROMP and In Situ Membrane Casting for CO Separation: An Approach to Endow Rubbery Materials with Properties of Rigid Polymers.

ACS Appl Mater Interfaces 2020 Jun 5;12(24):27286-27299. Epub 2020 Jun 5.

Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 406-772, Korea.

Rubbery polymer membranes prepared from CO-philic PEO and/or highly permeable PDMS are desired for efficient CO separation from light gases (CH and N). Poor mechanical properties and size-sieving ability, however, limit their application in gas separation applications. Cross-linked rubbery polymer-based gas separation membranes with a low based on both PEG/PPG and PDMS units with various compositions between these two units are prepared for the first time in this work by ring-opening metathesis polymerization type cross-linking and in situ membrane casting. Read More

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Determination of Dyadic Adjustment, Happiness and Related Factors in Married Turkish Women Living in Anatolia.

J Relig Health 2021 Jun;60(3):1937-1951

Nursing Department, Faculty of Health Sciences, Yozgat Bozok University, Yozgat, Turkey.

Nowadays, divorce rate increases rapidly; therefore evaluation, of dyadic adjustment and happiness at marriage gains importance. In the study, 910 women were reached and 772 married women agreed to participate in the study. Women have a mild level for dyadic adjustment and happiness with spouses. Read More

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Enhancement in pervaporative performance of PDMS membrane for separation of styrene from wastewater by hybridizing with reduced graphene oxide.

J Environ Manage 2020 May 2;261:110189. Epub 2020 Mar 2.

Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul, 34450, Turkey.

The removal of styrene from wastewater by pervaporation was investigated by using composite PDMS membranes filled with reduced graphene oxide on PES support layers. Graphene oxide was synthesized through modified Hummers' method and then chemically reduced. The filler was characterized by TEM, SEM, XRD, and AFM. Read More

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Hydrogel-Based Gas Sensors for NO and NH.

ACS Sens 2020 03 21;5(3):772-780. Epub 2020 Feb 21.

Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.

In this study, an innovative gas sensing mechanism, self-responsive sensing mechanism, has been detected in the supramolecular hydrogel-based sensors. The self-responsive ability of as-fabricated hydrogel-based sensors to the target gas (e.g. Read More

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MRI-guided cryoablation for metastatic spine disease: intermediate-term clinical outcomes in 14 consecutive patients.

J Neurosurg Spine 2020 Jan 17:1-6. Epub 2020 Jan 17.

1Department of Neurosurgery and.

Objective: Minimal access ablative techniques have emerged as a less invasive option for spinal metastatic disease reduction and separation from neural tissue. Compared with heat-based ablation modalities, percutaneous image-guided cryoablation allows for more distinct visualization of treatment margins. The authors report on a series of patients undergoing MRI-guided cryoablation as a feasible method for treating spinal metastatic disease. Read More

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January 2020

Influence of Solubility on the Adsorption of Different Xyloglucan Fractions at Cellulose-Water Interfaces.

Biomacromolecules 2020 02 26;21(2):772-782. Epub 2019 Dec 26.

School of Chemical Science and Engineering, Fibre and Polymer Technology , Royal Institute of Technology , Teknikringen 56-58 , SE-10044 Stockholm , Sweden.

Xylogucan (XG) fractions with different molar masses were prepared while preserving the natural structure of the XG. The solubility of the fractions was investigated using light scattering, chromatography, and microscopy techniques. The conformational changes of the XG molecules and their association and phase separation were investigated together with concentration and molar mass changes. Read More

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February 2020

Multiple TOF/TOF Events in a Single Laser Shot for Multiplexed Lipid Identifications in MALDI Imaging Mass Spectrometry.

Int J Mass Spectrom 2019 Mar 28;437:30-37. Epub 2018 Jun 28.

Department of Biochemistry, Vanderbilt University, Nashville, TN 37232.

Tandem mass spectrometry (MS/MS) is often used to identify lipids in matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS) workflows. The molecular specificity afforded by MS/MS is crucial on MALDI time-of-flight (TOF) platforms that generally lack high resolution accurate mass measurement capabilities. Unfortunately, imaging MS/MS workflows generally only monitor a single precursor ion over the imaged area, limiting the throughput of this methodology. Read More

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Fatty Acid- and Amino Acid-Specific Isotope Analysis for Accurate Authentication and Traceability in Organic Milk.

J Agric Food Chem 2019 Jan 2;67(2):711-722. Epub 2019 Jan 2.

Department of Crop Science, College of Sanghuh Life Science , Konkuk University , Seoul 05029 , Republic of Korea.

The present study describes compound-specific δC and δN analyses of fatty acids and amino acids for improving the accurate authentication of organic milk (OM) against conventional milk (CM) collected in Korea. Most δC and δC values were lower in OM than in CM ( P < 0.05); however, most δN values displayed weak discriminative power for OM authentication. Read More

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January 2019

Complementary effect of combined bacterial-chemical pretreatment to promote enzymatic digestibility of lignocellulose biomass.

Bioresour Technol 2019 Jan 17;272:275-280. Epub 2018 Oct 17.

School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Centre for Control & Treatment of Heavy Metal Pollution, Changsha 410083, PR China. Electronic address:

Chemical pretreatment partially modified the structure of lignocellulose to enhance saccharification, leaving unaltered factors to limit further hydrolysis. To overcome these limitations, a biostrategy involving co-pretreatment combining bacteria with a chemical process was developed. A significant complementary effect was observed in specific co-pretreatments, e. Read More

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January 2019

A Presynaptic Liquid Phase Unlocks the Vesicle Cluster.

Trends Neurosci 2018 11 4;41(11):772-774. Epub 2018 Aug 4.

Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA. Electronic address:

How are synaptic vesicles tied together in a nerve terminal? A recent study by Milovanovic and colleagues offers a new mechanism for this old and important problem: synapsin proteins establish a liquid phase that clusters vesicles. Liquid-liquid phase separation provides a fluid-like state that accommodates the dynamic demands of presynaptic vesicle traffic. Read More

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November 2018

A simple poly(styrene-co-divinylbenzene)-coated glass blood spot method for monitoring of seven antidepressants using capillary liquid chromatography-mass spectrometry.

Talanta 2018 Oct 19;188:772-778. Epub 2018 Jun 19.

Regional Institute for Applied Chemistry Research (IRICA), Ciudad Real 13071, Spain; Castilla-La Mancha Science and Technology Park, Albacete 02001, Spain. Electronic address:

A simple, rapid, selective and sensitive monitoring method for the simultaneous determination of the widely-prescribed antidepressants agomelatine, bupropion, citalopram, fluoxetine, mirtazapine, paroxetine, trazodone in just a human blood drop is here developed and validated. This methodology is based on the use of lab manufactured poly(styrene-co-divinylbenzene)-coated glass (PS-DVB) blood spot for the extraction of the analytes and their subsequent separation and detection by capillary liquid chromatography-mass spectrometry (CLC-MS). Briefly, 10 mm-side squares were punched out from blood spots collected on glass substrate coated by 10 µg of the PS-DVB polymer and eluted with 1. Read More

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October 2018

Monoclonal Antibodies for the Detection of a Specific Cyclic DNA Adduct Derived from ω-6 Polyunsaturated Fatty Acids.

Chem Res Toxicol 2018 08 30;31(8):772-783. Epub 2018 Jul 30.

Department of Oncology, Department of Biochemistry and Molecular and Cellular Biology, Lombardi Comprehensive Cancer Center , Georgetown University Medical Center , Washington , DC 20057 , United States.

Lipid peroxidation of polyunsaturated fatty acids (PUFAs) is an endogenous source of α,β-unsaturated aldehydes that react with DNA producing a variety of cyclic adducts. The mutagenic cyclic adducts, specifically those derived from oxidation of ω-6 PUFAs, may contribute to the cancer promoting activities associated with ω-6 PUFAs. ( E)-4-Hydroxy-2-nonenal (HNE) is a unique product of ω-6 PUFAs oxidation. Read More

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Experience of Child-Parent Separation and Later Risk of Violent Criminality.

Am J Prev Med 2018 08 15;55(2):178-186. Epub 2018 Jun 15.

Centre for Integrated Register-based Research, Aarhus University, Aarhus, Denmark; National Centre for Register-Based Research, Business and Social Sciences, Aarhus University, Aarhus, Denmark.

Introduction: Separation from a parent during childhood has been linked with heightened longer-term violence risk, but it remains unclear how this relationship varies by gender, separation subgroup, and age at separation. This phenomenon was investigated by examining a wide array of child-parent separation scenarios.

Methods: National cohort study including individuals born in Denmark, 1971-1997 (N=1,346,772). Read More

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Military status and alcohol problems: Former soldiers may be at greater risk.

Addict Behav 2018 09 13;84:139-143. Epub 2018 Apr 13.

Department of Community Health & Health Behavior, University at Buffalo, 325 Kimball Tower, 3435 Main Street, Buffalo, NY 14214, United States.

Objectives: The goal of this study was to explore differences in alcohol problems as a function of military status (current soldier, previous soldier and civilian spouses), and the possible interaction between sex and military status. We hypothesized that 1) soldiers would be at greater risk for alcohol problems than civilian spouses, and 2) former soldiers would be at greater risk compared to current soldiers.

Methods: Data were drawn from Operation: SAFETY, a longitudinal study examining physical and mental health among U. Read More

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September 2018

SUMO targets the APC/C to regulate transition from metaphase to anaphase.

Nat Commun 2018 03 16;9(1):1119. Epub 2018 Mar 16.

Department of Molecular Cell Biology, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.

Signal transduction by small ubiquitin-like modifier (SUMO) regulates a myriad of nuclear processes. Here we report on the role of SUMO in mitosis in human cell lines. Knocking down the SUMO conjugation machinery results in a delay in mitosis and defects in mitotic chromosome separation. Read More

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NIR Phosphorescent Intramolecularly Bridged Benzoporphyrins and Their Application in Oxygen-Compensated Glucose Optode.

Anal Chem 2018 02 8;90(4):2741-2748. Epub 2018 Feb 8.

Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology , Stremayrgasse 9, 8010, Graz, Austria.

A glucose optode measuring the internal oxygen gradient is presented. The multilayer biosensor is composed of (i) analyte-impermeable transparent support, (ii) first oxygen-sensing layer combined with an enzymatic layer, (iii) diffusion barrier, and (iv) second oxygen-sensing layer. To make this design suitable for measurement in subcutaneous tissue, a pair of NIR phosphorescent indicators with very different spectral properties is chosen. Read More

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February 2018

Real-Time Nanopore-Based Recognition of Protein Translocation Success.

Biophys J 2018 02 12;114(4):772-776. Epub 2018 Jan 12.

Section on Molecular Transport, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland. Electronic address:

A growing number of new technologies are supported by a single- or multi-nanopore architecture for capture, sensing, and delivery of polymeric biomolecules. Nanopore-based single-molecule DNA sequencing is the premier example. This method relies on the uniform linear charge density of DNA, so that each DNA strand is overwhelmingly likely to pass through the nanopore and across the separating membrane. Read More

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February 2018

Prevalence of Adverse Childhood Experiences in Low-Income Latino Immigrant and Nonimmigrant Children.

J Pediatr 2018 01;192:209-215.e1

Department of Human Development and Family Science, University of Georgia, Athens, GA.

Objective: To estimate the prevalence of adverse childhood experiences in low-income Latino children and examine differences in the prevalence of adverse childhood experiences by immigrant generational status.

Study Design: This is a secondary data analysis of the 2011-2012 National Survey of Children's Health, a telephone survey of parents/caregivers of a nationally representative sample of US children. The study sample was limited to Latino children in households with an annual income ≤200% of the federal poverty level (FPL) whose parents responded to a 9-item inventory of adverse childhood experiences. Read More

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January 2018

'Sibling Alienation Syndrome': Psychological aftermath of false sexual abuse allegations?

Aust N Z J Psychiatry 2017 08 27;51(8):772-773. Epub 2017 May 27.

Department of Psychiatry, University of Florida, Gainesville, FL, USA.

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Accumulation of Carotenoids and Metabolic Profiling in Different Cultivars of Tagetes Flowers.

Molecules 2017 Feb 18;22(2). Epub 2017 Feb 18.

Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea.

Species of , which belong to the family Asteraceae show different characteristics including, bloom size, shape, and color; plant size; and leaf shape. In this study, we determined the differences in primary metabolites and carotenoid yields among six cultivars from two species, and . In total, we detected seven carotenoids in the examined cultivars: violaxanthin, lutein, zeaxanthin, α-carotene, β-carotene, 9--β-carotene, and 13--β-carotene. Read More

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February 2017