2,319,439 results match your criteria Science & Medicine[Journal]


Influence of 18F-FDG-PET/CT on staging of cervical cancer.

Nuklearmedizin 2019 Feb 15;58(1):17-22. Epub 2019 Feb 15.

Chair and Department of Electroradiology, Poznan University of Medical Science.

Aim: Cervical cancer is one of the most common cancers of the female reproductive system. The aim of the study was to assess the usefulness of the F-FDG-PET/CT study in staging of cervical cancer, with focus on the primary tumor parameters.

Material & Methods: 105 patients (mean age 56 ± 11y) with newly diagnosed cervical cancer underwent PET/CT examination which was performed 60 min after IV injection of F-FDG with a mean activity of 364 ± 75MBq. Read More

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http://dx.doi.org/10.1055/a-0809-4577DOI Listing
February 2019

Large area patterning of residue-free metal oxide nanostructures by Liquid Transfer Imprint Lithography.

Nanotechnology 2019 Feb 15. Epub 2019 Feb 15.

Nanomechanical System Research Division, Korea Institute of Machinery and Materials, Jang-dong, Yuseong-gu, Daejeon 305-343, KOREA, DaeJeon, 305-600, KOREA, REPUBLIC OF.

One-dimensional and three-dimensional residue-free metal oxide patterns are directly fabricated over large areas using liquid transfer imprint lithography (LTIL) with an ultraviolet (UV)-curable metal oxide precursor resist. A one-dimensional line or pillar array of metal oxides nano-patterns without a residual layer is formed by LTIL and annealing processes. A three-dimensional layer-by-layer nanomesh structure is successfully constructed by repeating the LTIL method without a complex etching process. Read More

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http://dx.doi.org/10.1088/1361-6528/ab077dDOI Listing
February 2019

Thermal transport in C3N nanotube: a comparative study with carbon nanotube.

Authors:
Xu Cheng Xinyu Wang

Nanotechnology 2019 Feb 15. Epub 2019 Feb 15.

Institute of Thermal Science and Technology, Shandong University, 17923 Jinshi Road, Jinan, Shandong Province, 250061, CHINA.

One-dimensional nanotubes, such as, carbon nanotube (CNT) and C3N nanotube (C<sub>3</sub>NNT), are attracting growing research interest due to their excellent electrical and thermal properties. In this work, thermal transport of single-walled C<sub>3</sub>NNT is investigated in comparison with the single-walled CNT using classical molecular dynamics (MD) simulations. We firstly observe that the thermal conductivity (<i>k</i>) of C<sub>3</sub>NNT is lower than that of CNT. Read More

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http://dx.doi.org/10.1088/1361-6528/ab077aDOI Listing
February 2019

One step synthesis of PANI/Fe2O3 nanocomposites and flexible film for enhanced NH3 sensing performance at room temperature.

Nanotechnology 2019 Feb 15. Epub 2019 Feb 15.

Institute of Polymer Product Engineering, Linz, AUSTRIA.

Novel sea cucumber-shaped polyaniline/ferric oxide (PANI/Fe2O3) nanocomposites were synthesized using a simple and efficient one-step hydrothermal process, and further assembling the nanocomposites onto a polyethylene terephthalate (PET) flexible substrate. Through monitoring the resistance of the PANI/Fe2O3 nanocomposites thick film and PANI/Fe2O3-PET flexible sensors, the responses of the sensors are obtained to various 100 ppm gases including methanol, triethylamine, aniline and other five gases. It is found that two kinds of sensors exhibit a high selectivity towards NH3. Read More

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http://dx.doi.org/10.1088/1361-6528/ab076eDOI Listing
February 2019

Intermittent light and microbial action of mixed endogenous source DOM affects degradation of 17β-estradiol day after day in a relatively deep natural anaerobic aqueous environment.

J Hazard Mater 2019 Feb 6;369:40-49. Epub 2019 Feb 6.

Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, 45221, USA. Electronic address:

All kinds of wastewaters containing steroid estrogens (SEs) and mixed endogenous source dissolved organic matter (DOM) enter natural water environments with intermittent illumination where microbial action occurs in a relatively deep natural aqueous environment. The role of mixed endogenous source DOM in SEs' biodegradation and photochemical degradation in such environments was studied using 17β-estradiol (E2) in laboratory experiments under anaerobic conditions. The experimental results show that microbial action can improve the optical properties and electron transfer capability of mixed endogenous source DOM, promoting photodegradation and biodegradation. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.02.017DOI Listing
February 2019

Effect of ageing and chemical form on the bioavailability and toxicity of Pb to the survival and reproduction of the soil invertebrate Enchytraeus crypticus.

Sci Total Environ 2019 Feb 5;664:975-983. Epub 2019 Feb 5.

Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands. Electronic address:

This study investigated the effect of ageing on the bioavailability and toxicity of lead nitrate (Pb(NO)) and lead oxide (PbO) to Enchytraeus crypticus in LUFA 2.2 natural soil. The potworms were exposed after 2 weeks pre-incubation and after ageing the spiked soils for 3, 6, 12 and 18 months. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.054DOI Listing
February 2019

Runoff change and sediment source during rainstorms in an ecologically constructed watershed on the Loess Plateau, China.

Sci Total Environ 2019 Jan 30;664:968-974. Epub 2019 Jan 30.

State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, Shaanxi, China.

The sediment-reducing effect of check dams and the safety issues following dam breaks are long-standing concerns. This study analyzed the runoff change and sediment source during rainstorms in a small watershed using a multivariate mixed model and a comparative analysis of watersheds. The problem of sediment loss from dammed farmland following check dam break during rainstorms was evaluated. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.01.378DOI Listing
January 2019

Cytotoxicity of organic and inorganic compounds to primary cell cultures established from internal tissues of Chelonia mydas.

Sci Total Environ 2019 Feb 4;664:958-967. Epub 2019 Feb 4.

Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, Australia.

Chemical contaminants have been found in the tissues of sea turtles from all over the world; however, very little is known about the effects. Recently, in vitro alternatives to live animal testing have been applied to sea turtles due to their ethical and practical benefits. While primary skin fibroblasts have been established for several species of sea turtle, cells from internal organs are lacking, though they may be more relevant due to the well documented accumulation of contaminants within internal tissues. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.052DOI Listing
February 2019

The toxic potentials and focus of disinfection byproducts based on the human embryonic kidney (HEK293) cell model.

Sci Total Environ 2019 Jan 29;664:948-957. Epub 2019 Jan 29.

Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address:

Disinfection byproducts (DBPs) are inevitably generated during drinking water disinfection processes, and their hazards have not been well characterized. Because they plausibly cause toxicological and pathological damage to human kidney, we selected the human embryonic kidney (HEK293) cell, instead of the commonly used CHO cell, as a model to investigate the toxic potential and target of 10 DBPs, including 3 haloacetamides, 2 trihaloacetaldehydes and 5 iodomethanes. Based on the chronic toxicity parameter EC of the cell viability test, we obtained a toxic rank of the tested DBPs different from previous studies and calculated their risk quotients by combining their actual concentrations in drinking water systems. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.01.361DOI Listing
January 2019

One Health - Cycling of diverse microbial communities as a connecting force for soil, plant, animal, human and ecosystem health.

Sci Total Environ 2019 Feb 6;664:927-937. Epub 2019 Feb 6.

Emerging Pathogens Institute, University of Florida, Gainesville FL32611, USA; Department of Medicine, School of Medicine, University of Florida, Gainesville FL32611, USA.

The One Health concept proposes that there is a connection between human, animal and environmental health. Plants and their health are not explicitly included. In this review, we broaden the One Health concept to include soil, plant, animal and ecosystem health. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.091DOI Listing
February 2019

A framework for automated anomaly detection in high frequency water-quality data from in situ sensors.

Sci Total Environ 2019 Feb 6;664:885-898. Epub 2019 Feb 6.

ARC Centre of Excellence for Mathematical & Statistical Frontiers (ACEMS), Australia; Institute for Future Environments, Queensland University of Technology, Brisbane, Queensland, Australia; School of Mathematical Sciences, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland, Australia.

Monitoring the water quality of rivers is increasingly conducted using automated in situ sensors, enabling timelier identification of unexpected values or trends. However, the data are confounded by anomalies caused by technical issues, for which the volume and velocity of data preclude manual detection. We present a framework for automated anomaly detection in high-frequency water-quality data from in situ sensors, using turbidity, conductivity and river level data collected from rivers flowing into the Great Barrier Reef. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.085DOI Listing
February 2019

Response of streamflow to environmental changes: A Budyko-type analysis based on 144 river basins over China.

Sci Total Environ 2019 Feb 2;664:824-833. Epub 2019 Feb 2.

Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.

Understanding response of streamflow to environmental changes is crucial for large-scale water resources management and ecosystem restoration. There is no consensus on how environmental change influence streamflow in different regions across climate gradient, as previous studies mainly focused on a single river basin or climate region. This study analyzed the variations of aridity index and its contributions to streamflow change based on Budyko's framework approach using bias-corrected precipitation measurement, parameters-optimized potential evapotranspiration and observed streamflow in 144 basins across China. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.011DOI Listing
February 2019

Cognitive bias research in forensic science: A systematic review.

Forensic Sci Int 2019 Jan 22;297:35-46. Epub 2019 Jan 22.

Innocence Project, 40 Worth St, Suite 701, New York, NY, 10013, United States. Electronic address:

The extent to which cognitive biases may influence decision-making in forensic science is an important question with implications for training and practice. We conducted a systematic review of the literature on cognitive biases in forensic science disciplines. The initial literature search including electronic searching of three databases (two social science, one science) and manual review of reference lists in identified articles. Read More

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http://dx.doi.org/10.1016/j.forsciint.2019.01.016DOI Listing
January 2019

Are sensorimotor experiences the key for successful early intervention in infants with congenital brain lesion?

Infant Behav Dev 2019 Feb 12;54:133-139. Epub 2019 Feb 12.

Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark; DTU Compute, Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kgs. Lyngby, Denmark.

Living with a congenital brain lesion may have detrimental effects on the ability to do everyday activities, but contrary to acquired brain lesions, people and in particular children, with congenital brain lesions may have limited or no experience of how their bodies work. This absence of experience gives rise to challenges for habilitation of sensorimotor abilities and derived cognitive abilities. How can motor and cognitive abilities be achieved and trained in an individual with no experience of potential abilities? In this article, we aim to review the existing knowledge about the development of sensorimotor integration. Read More

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http://dx.doi.org/10.1016/j.infbeh.2019.02.001DOI Listing
February 2019

The effect of direct hemoperfusion with polymyxin B immobilized cartridge on meropenem in critically ill patients requiring renal support.

J Crit Care 2019 Feb 5;51:71-76. Epub 2019 Feb 5.

Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand. Electronic address:

Purpose: To evaluate the effect of direct hemoperfusion with polymyxin B immobilized cartridge (DHP-PMX) on meropenem pharmacokinetics in critically ill patients with sepsis requiring continuous venovenous hemofiltration (CVVH).

Material And Methods: After intravenous infusion of 1 g meropenem over 3 h repeated every 8 h for at least 3 doses, 2 serial blood and ultrafiltration fluid samples were collected: one over a dose interval of meropenem with DHP-PMX therapy; and the other on the following day over a dose interval of meropenem with no DHP-PMX therapy. Meropenem concentrations were measured by high performance liquid chromatography. Read More

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http://dx.doi.org/10.1016/j.jcrc.2019.02.007DOI Listing
February 2019

Real-time monitoring of water quality of stream water using sulfur-oxidizing bacteria as bio-indicator.

Chemosphere 2019 Jan 31;223:58-63. Epub 2019 Jan 31.

Department of Biological Environment, Kangwon National University, 192-1 Hyoja-2-dong, Gangwondo, Chuncheon, 200-701, South Korea. Electronic address:

In aquatic ecosystems, real-time water-quality (WQ) biomonitoring has become the most effective technology for monitoring toxic events by using living organisms as a biosensor. In this study, an online WQ monitoring system using sulfur oxidizing bacteria (SOB) was tested to monitor WQ changes in real-time in natural stream water. The WQ monitoring system consisted of three SOB reactors (one continuous and two semi-continuous mode reactors). Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.01.089DOI Listing
January 2019

The end user sensor tree: An end-user friendly sensor database.

Biosens Bioelectron 2019 Feb 1;130:245-253. Epub 2019 Feb 1.

Institute for Global Food Security, School of Biological Sciences, Queen's University, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK. Electronic address:

Detailed knowledge regarding sensor based technologies for the detection of food contamination often remains concealed within scientific journals or divided between numerous commercial kits which prevents optimal connectivity between companies and end-users. To overcome this barrier The End user Sensor Tree (TEST) has been developed. TEST is a comprehensive, interactive platform including over 900 sensor based methods, retrieved from the scientific literature and commercial market, for aquatic-toxins, mycotoxins, pesticides and microorganism detection. Read More

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http://dx.doi.org/10.1016/j.bios.2019.01.055DOI Listing
February 2019

Design and construction of Z-scheme BiS/nitrogen-doped graphene quantum dots: Boosted photoelectric conversion efficiency for high-performance photoelectrochemical aptasensing of sulfadimethoxine.

Biosens Bioelectron 2019 Feb 5;130:230-235. Epub 2019 Feb 5.

Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China. Electronic address:

Rational design and fabrication of Z-scheme visible-light-driven photoactive materials have drawn much attention owing to their great potential in handling environment and energy crisis. In this work, Z-scheme BiS/nitrogen-doped graphene quantum dots (NGQDs) with superior photoelectric conversion efficiency were designed and fabricated, which demonstrated enhanced photoactivity compared with BiS owing to the improved separation efficiency of photogenerated electron and hole pairs. The emphasis was put on designing Z-scheme BiS/NGQDs, and then the mechanism of Z-scheme charge transfer mode was verified by the electron spin resonance (ESR) technique. Read More

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http://dx.doi.org/10.1016/j.bios.2019.01.058DOI Listing
February 2019

Lestaurtinib (CEP-701) modulates the effects of early life hypoxic seizures on cognitive and emotional behaviors in immature rats.

Epilepsy Behav 2019 Feb 12;92:332-340. Epub 2019 Feb 12.

Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Division of Child Neurology, Department of Pediatric and Adolescent Medicine, American University of Beirut Medical Center, Beirut, Lebanon. Electronic address:

Hypoxic encephalopathy of the newborn is a major cause of long-term neurological sequelae. We have previously shown that CEP-701 (lestaurtinib), a drug with an established safety profile in children, attenuates short-term hyperexcitability and tropomyosin-related kinase B (TrkB) receptor activation in a well-established rat model of early life hypoxic seizures (HS). Here, we investigated the potential long-term neuroprotective effects of a post-HS transient CEP-701 treatment. Read More

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http://dx.doi.org/10.1016/j.yebeh.2019.01.023DOI Listing
February 2019

Pre-enrichment of radioactive cesium in muddy water separated into suspended and dissolved substances for trace analysis.

Water Res 2019 Jan 31;154:28-33. Epub 2019 Jan 31.

Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, 305-8565, Japan. Electronic address:

A new in-situ pre-enrichment system was developed for trace analysis of radioactive Cs in environmental water such as rivers, ponds, and seas, where the radioactive Cs is separated into suspended substances (SS) and dissolved substances (DS). The SS component was collected as the enrichment slurry by cross-flow filtration, thereby compact systems were realized. The DS component was collected in a small cartridge filled with a non-woven fiber with immobilized adsorbent nanoparticles. Read More

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http://dx.doi.org/10.1016/j.watres.2019.01.031DOI Listing
January 2019

Social contents in dreams: An empirical test of the Social Simulation Theory.

Conscious Cogn 2019 Feb 12;69:133-145. Epub 2019 Feb 12.

Department of Psychology, University of Turku, FI-20014 Turku, Finland; Turku Brain and Mind Center, University of Turku, FI-20014 Turku, Finland; Department of Cognitive Neuroscience and Philosophy, School of Biosciences, University of Skövde SE-54128, Skövde, Sweden.

Social Simulation Theory (SST) considers the function of dreaming to be the simulation of social events. The Sociality Bias and the Strengthening hypotheses of SST were tested. Social Content Scale (SCS) was developed to quantify social events. Read More

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http://dx.doi.org/10.1016/j.concog.2019.01.017DOI Listing
February 2019

Synthesis, biological evaluation and molecular docking of novel pyrazole derivatives as potent carbonic anhydrase and acetylcholinesterase inhibitors.

Bioorg Chem 2019 Feb 5;86:420-427. Epub 2019 Feb 5.

Department of Chemistry, Faculty of Science, Ataturk University, 25240 Erzurum, Turkey.

A series of substituted pyrazole compounds (1-8 and 9a, b) were synthesized and their structure was characterized by IR, NMR, and Mass analysis. These obtained novel pyrazole derivatives (1-8 and 9a, b) were emerged as effective inhibitors of the cytosolic carbonic anhydrase I and II isoforms (hCA I and II) and acetylcholinesterase (AChE) enzymes with K values in the range of 1.03 ± 0. Read More

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http://dx.doi.org/10.1016/j.bioorg.2019.02.013DOI Listing
February 2019

One-step preparation of molybdenum disulfide/graphene nano-catalysts through a simple co-exfoliation method for high-performance electrocatalytic hydrogen evolution reaction.

J Colloid Interface Sci 2019 Feb 7;542:355-362. Epub 2019 Feb 7.

Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China. Electronic address:

Hypothesis: Recently, molybdenum disulfide (MoS) as a new type of catalyst, has been used for hydrogen evolution. In order to overcome the shortcomings of MoS, such as poor conductivity and lack of catalytic activity sites, various materials were added to prepare composites, such as graphene with good conductivity.

Experiments: In this work, we combined MoS with graphene through a very simple liquid-phase salt-assisted co-exfoliation method. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.02.018DOI Listing
February 2019

High-resolution label-free studies of molecular distribution and orientation in ultrathin, multicomponent model membranes with infrared nano-spectroscopy AFM-IR.

J Colloid Interface Sci 2019 Feb 6;542:347-354. Epub 2019 Feb 6.

Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland.

Biological membranes are undoubtedly very interesting systems. Unfortunately, their analysis is very complicated and therefore simplified artificial models, like Langmuir monolayers, are frequently applied. In this work a novel method of label-free monomolecular films analysis based on infrared nano-spectroscopy (AFM-IR) is presented. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.02.016DOI Listing
February 2019

Long-term creep deformations in colloidal calcium-silicate-hydrate gels by accelerated aging simulations.

J Colloid Interface Sci 2019 Feb 7;542:339-346. Epub 2019 Feb 7.

Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, USA. Electronic address:

When subjected to a sustained load, jammed colloidal gels can feature some delayed viscoplastic creep deformations. However, due to the long timescale of creep (up to several years), its modeling and, thereby, prediction has remained challenging. Here, based on mesoscale simulations of calcium-silicate-hydrate gels (CSH, the binding phase of concrete), we present an accelerated simulation method-based on stress perturbations and overaging-to model creep deformations in CSH. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.02.022DOI Listing
February 2019

Valorization of manganese-containing groundwater treatment sludge by preparing magnetic adsorbent for Cu(II) adsorption.

J Environ Manage 2019 Feb 12;236:446-454. Epub 2019 Feb 12.

Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Northeast Normal University, Changchun 130117, China; Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun 130117, China.

Mn-containing sludge from groundwater treatment was converted to magnetic particles (MPs) via a one-step hydrothermal method using sodium ascorbate (SA) as the reductant. The MPs were characterized by X-ray diffraction spectroscopy, Mössbauer spectroscopy, X-ray fluorescence spectroscopy, magnetometry and Gran titration and the results showed that magnetic jacobsite was obtained as an intermediate product in transformation of Fe/Mn oxides to siderite and rhodochrosite. When the molar ratio of SA to Mn in the sludge was two, the produced MPs-2 contained a mixture of ferrihdyrite, hematite, jacobsite and Si/Al oxides, and could magnetize at 2. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.01.117DOI Listing
February 2019

Bacterial leaching of critical metal values from Polish copper metallurgical slags using Acidithiobacillus thiooxidans.

J Environ Manage 2019 Feb 12;236:436-445. Epub 2019 Feb 12.

AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Al. A. Mickiewicza 30, 30-059 Krakow, Poland. Electronic address:

Global economy faces an increasing problem of the supply risk of critical raw materials, therefore the search for secondary resources has become an urgent issue. Copper orebodies in Poland contain substantial amounts of metals deemed critical (e.g. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.032DOI Listing
February 2019

Municipal solid waste biochar-bentonite composite for the removal of antibiotic ciprofloxacin from aqueous media.

J Environ Manage 2019 Feb 12;236:428-435. Epub 2019 Feb 12.

Ecosphere Resilience Research Centre, Faculty of Applied Science, University of Sri Jayewardenepura, Sri Lanka; Molecular Microbiology and Human Diseases, National Institute of Fundamental Studies, Kandy 20000, Sri Lanka. Electronic address:

This study investigates the adsorption of ciprofloxacin (CPX) onto a municipal solid waste derived biochar (MSW-BC) and a composite material developed by combining the biochar with bentonite clay. A bentonite-MSW slurry was first prepared at 1:5 ratio (w/w), and then pyrolyzed at 450 °C for 30 min. The composite was characterized by scanning electron microscopy (SEM), Powder X-ray diffraction (PXRD) and Fourier transform infrared (FTIR) spectroscopy before and after CPX adsorption. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.006DOI Listing
February 2019

Antibiotics for Groin Hernia Repair According to Evidence-Based Guidelines: Time for Action in Ghana.

J Surg Res 2019 Feb 12;238:90-95. Epub 2019 Feb 12.

Harborview Injury Prevention & Research Center, Seattle, Washington; Department of Surgery, University of Washington, Seattle, Washington.

Backgroud: Groin hernia repairs (GHR), though classified as clean surgeries, are associated with varying rates of surgical site infections. We assessed the practices of surgeons in Ghana regarding antibiotic use for GHR in comparison to evidence-based international guidelines (EBIG).

Methods: We interviewed surgeons trained by the Ghana College of Physicians and Surgeons (GCPS), from inception (2003) through 2016, about their use of antibiotics for GHR. Read More

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http://dx.doi.org/10.1016/j.jss.2019.01.040DOI Listing
February 2019

A noninvasive MRI based approach to estimate the mechanical properties of human knee ligaments.

J Mech Behav Biomed Mater 2019 Feb 7;93:43-51. Epub 2019 Feb 7.

Orthopaedic Research Lab, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands; Laboratory of Biomechanical Engineering, University of Twente, Enschede, the Netherlands.

Characterization of the main tibiofemoral ligaments is an essential step in developing patient-specific computational models of the knee joint for personalized surgery pre-planning. Tensile tests are commonly performed in-vitro to characterize the mechanical stiffness and rupture force of the knee ligaments which makes the technique unsuitable for in-vivo application. The time required for the limited noninvasive approaches for properties estimation based on knee laxity remained the main obstacle in clinical implementation. Read More

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http://dx.doi.org/10.1016/j.jmbbm.2019.01.022DOI Listing
February 2019

Corrosion and metal release from overlapping arterial stents under mechanical and electrochemical stress - An experimental study.

J Mech Behav Biomed Mater 2019 Feb 4;93:31-35. Epub 2019 Feb 4.

Department of Clinical Science, Faculty of Medicine, University of Bergen, N-5021 Bergen, Norway; Department of Vascular Surgery, Haukeland University Hospital, Norway.

Intra-arterial stenosis due to atherosclerosis is often treated with endovascular balloon dilatation with a metal stent. Restenosis is common and is frequently treated with a new stent placed inside the existing one or the stents are placed with overlap to cover a larger area of the vessels. Observations of stent fractures, stent compression, accumulation of immunocompetent cells around stents have suggested the possibility of immunologic reactions to substances released from stents. Read More

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http://dx.doi.org/10.1016/j.jmbbm.2019.02.001DOI Listing
February 2019

Mesoporous, degradable hyaluronic acid microparticles for sustainable drug delivery application.

Colloids Surf B Biointerfaces 2019 Feb 8;177:284-293. Epub 2019 Feb 8.

Department of Ophthalmology, School of Medicine, University of South Florida Eye Institute, 12901 Bruce B. Downs Blvd., MDC 21 Tampa, FL, 33612, United States. Electronic address:

Porous and degradable hyaluronic acid (HA) microparticles was synthesized in a single step using different ratio of crosslinker, divinylsulfone (DVS) ranging between 2.5 and 100% mole ratio of HA repeating unit. HA particles less than 25% (≤10%) crosslinker ratio were found to be mesoporous and provided the highest surface area, calculated as 21. Read More

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http://dx.doi.org/10.1016/j.colsurfb.2019.02.015DOI Listing
February 2019

Effect of calcium peroxide on the water quality and bacterium community of sediment in black-odor water.

Environ Pollut 2018 Nov 23;248:18-27. Epub 2018 Nov 23.

Environmental Science Department, University of San Francisco, California, CA, 94117, USA.

This study investigated how efficiently CaO could treat black-odor landscape water caused by low dissolved oxygen (DO) in a field experiment of 600 m. The study demonstrated that CaO could significantly elevate the DO concentration in waters and the oxidation-reduction potential (ORP) level in sediments (p = 0.003 and p = 0), which is conducive to improving the anoxic environment of landscape water. Read More

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http://dx.doi.org/10.1016/j.envpol.2018.11.069DOI Listing
November 2018

Occurrence and contamination profiles of antibiotic resistance genes from swine manure to receiving environments in Guangdong Province southern China.

Ecotoxicol Environ Saf 2019 Feb 12;173:96-102. Epub 2019 Feb 12.

College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China; Ministry of Agriculture Key Laboratory of Tropical Agricultural Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Enterprise Lab of Healthy Animal Husbandry and Environment Control, Yunfu, Xinxing 527400, China. Electronic address:

Livestock farms are commonly regarded as the main sources of antibiotic resistance genes (ARGs), emerging pollutants with potential implications for human health, in the environment. This study investigated the occurrence and contamination profiles of nine ARGs of three types from swine manure to receiving environments (soil and water) in Guangdong Province, southern China. All ARGs occurred in 100% of swine manure samples. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.02.023DOI Listing
February 2019

Natural ecotype of Arabidopsis thaliana (L.) Heynh (Chernobyl-07) respond to cadmium stress more intensively than the sensitive ecotypes Oasis and Columbia.

Ecotoxicol Environ Saf 2019 Feb 12;173:86-95. Epub 2019 Feb 12.

Mykola Kholodny Institute of Botany, National Academy of Sciences of Ukraine, Tereshchenkivska 2, 01004 Kyiv, Ukraine.

Large areas polluted with toxic heavy metals or radionuclides were formed as a side product of rapid industrial development of human society. Plants, due to their sessile nature, should adapt to these challenging genotoxic environmental conditions and develop resistance. Herein, we evaluated the response of three natural ecotypes of Arabidopsis thaliana (L. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.02.012DOI Listing
February 2019

Towards the development of standardised sea turtle primary cell cultures for toxicity testing.

Ecotoxicol Environ Saf 2019 Feb 12;173:63-70. Epub 2019 Feb 12.

Australian Rivers Institute, School of Environment and Science, Griffith University, Gold Coast, Australia.

Chemical contaminants are known to accumulate in marine megafauna globally, but little is known about how this impacts animal health. In vitro assays offer an ethical, reproducible and cost-effective alternative to live animal toxicity testing on large, long-lived or threatened species, such as sea turtles. However, using a cell culture from a single animal raise the question of whether the toxicity observed adequately represents the toxicity in that species. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.01.117DOI Listing
February 2019

Memory enhancements from active control of learning emerge across development.

Cognition 2019 Feb 12;186:82-94. Epub 2019 Feb 12.

Department of Psychology, University of California, Berkeley, United States.

This paper investigates whether active control of study leads to enhanced learning in 5- to 11-year-old children. In Experiments 1 and 2, participants played a simple memory game with the instruction to try to remember and later recognize a set of 64 objects. In Experiment 3, the goal was to learn the French names for the same objects. Read More

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http://dx.doi.org/10.1016/j.cognition.2019.01.010DOI Listing
February 2019

Application of EDTA modified FeO/sawdust carbon nanocomposites to ameliorate methylene blue and brilliant green dye laden water.

Environ Res 2019 Feb 2;172:43-54. Epub 2019 Feb 2.

Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar 125001, India; Department of Environmental Science and Technology, Central University of Punjab, Bathinda 151001, Punjab, India. Electronic address:

This work explored the potential of magnetic sawdust carbon nanocomposites for cationic dyes removal from aqueous medium. EDTA modified magnetic sawdust carbon nanocomposites (EDTA@FeO/SC ncs) were prepared by biogenic green reduction and precipitation approach. The surface properties, structure and composition of nanocomposites were characterized by HRTEM, FESEM, XRD, EDX, BET, FTIR etc. Read More

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http://dx.doi.org/10.1016/j.envres.2019.02.002DOI Listing
February 2019

Antibacterial application of covalently immobilized photosensitizers on a surface.

Environ Res 2019 Jan 3;172:34-42. Epub 2019 Jan 3.

School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, South Korea. Electronic address:

Singlet oxygen produced by irradiating photosensitizers (PSs) can be used to kill pathogens during water treatment. Chemical immobilization of the PSs on surfaces can maintain their disinfection function long-term. In this study, two model PSs (rose bengal (RB) and hematoporphyrin (HP)) were immobilized on a glass surface using a silane coupling agent with an epoxide group, and their antibacterial properties were analyzed. Read More

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http://dx.doi.org/10.1016/j.envres.2019.01.002DOI Listing
January 2019

Assessment of endocrine-disrupting activities of alternative chemicals for bis(2-ethylhexyl)phthalate.

Environ Res 2019 Feb 2;172:10-17. Epub 2019 Feb 2.

Department of Integrative Bioscience and Biothecnology, College of Life Science, Sejong University, Kwangjingu, Kunjadong, Seoul 143-747, Republic of Korea. Electronic address:

Plastic products are closely intertwined with modern life. Some plasticizers used in making plastics, such as phthalates, are reported to be endocrine-disrupting chemicals. Plasticizers can be released into the environment, and health risks related to plasticizer exposure have been reported. Read More

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http://dx.doi.org/10.1016/j.envres.2019.02.001DOI Listing
February 2019

Development of a remote purification apparatus with disposable evaporator for the routine production of high-quality Cu for clinical use.

Appl Radiat Isot 2019 Jan 31;146:127-132. Epub 2019 Jan 31.

National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan.

We developed a new apparatus for the routine production of Cu in clinical use. The apparatus has many disposable parts that stabilize the product quality (such that there is a low deviation of the concentrations of impurity metals in the product) and reduce the work load of preparation for routine production. We also developed a new evaporator using near-infrared heaters for disposable use. Read More

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http://dx.doi.org/10.1016/j.apradiso.2019.01.024DOI Listing
January 2019

Cross sections for thermal neutron capture by W and W.

Authors:
K S Krane

Appl Radiat Isot 2019 Feb 5;146:115-119. Epub 2019 Feb 5.

Department of Physics, Oregon State University, Corvallis, OR, 97331, USA. Electronic address:

Based on activation measurements with W targets of natural isotopic abundance, the cross sections for thermal neutron capture by W and W have been determined by comparing the activities of W and W after activation with that of W. Relative to the known cross sections for capture by W, after correction of the latter for changes in the recommended γ-ray branching intensities, the values of the thermal cross sections have been determined to be 22.7(16) b for capture by W and 1. Read More

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http://dx.doi.org/10.1016/j.apradiso.2019.02.002DOI Listing
February 2019

Simulation study of alpha-neutron reactions from AmBe directional source using MCNP 6.1.1 with TENDL 2012, 2014, and 2017 libraries.

Appl Radiat Isot 2019 Feb 5;146:104-114. Epub 2019 Feb 5.

Missouri University of Science and Technology, 222 Fulton Hall 301 W. 14th St., Rolla, MO, 65401, USA. Electronic address:

Angular dependence of Be(α, n)C was simulated in Monte-Carlo N-Particle transport 6.1.1 (MCNP) with TALYS Evaluated Nuclear Data Library (TENDL) 2012, 2014, and 2017 data to determine secondary neutron direction and energy for neutron imaging. Read More

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http://dx.doi.org/10.1016/j.apradiso.2019.01.011DOI Listing
February 2019

Folate-directed zinc (II) phthalocyanine loaded polymeric micelles engineered to generate reactive oxygen species for efficacious photodynamic therapy of cancers.

Photodiagnosis Photodyn Ther 2019 Feb 12. Epub 2019 Feb 12.

Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland. Electronic address:

Targeted and effective drug transport is becoming an attractive option in cancer therapy since it can improve drug efficacy and reduce drugs' side effects in normal tissues. In addition to using specific surface ligand molecules, the selective drug delivery can be accomplished via enhanced permeability and retention effect. Therefore, in our studies, we entrapped zinc (II) phthalocyanine (ZnPc) - a second generation photosensitizer - in folate-functionalized micelles of the biocompatible, FDA-approved for biomedical application diblock copolymer methoxypoly(ethylene oxide)-b-poly(L-lactide) (mPEG-b-PLLA) and its derivative with folate (FA) attached to the end of PEG chain (FA-PEG-b-PLLA). Read More

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http://dx.doi.org/10.1016/j.pdpdt.2019.02.014DOI Listing
February 2019

Metal organic framework based carbon porous as an efficient dispersive solid phase extraction adsorbent for analysis of methamphetamine from urine matrix.

J Chromatogr B Analyt Technol Biomed Life Sci 2019 Feb 7;1109:149-154. Epub 2019 Feb 7.

Biotechnology Research Center and Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran. Electronic address:

Carboxylated carbon porous adsorbent was derived from zeolite imidazole framework (ZIF-8) via carbonization of ZIF-8 under a nitrogen atmosphere. The synthesized carboxylated adsorbent was fully characterized by various techniques including Fourier transform spectroscopy (FTIR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and zeta potential analysis. The carboxylated adsorbent was applied as dispersive solid phase extraction (DSPE) adsorbent for efficient extraction of methamphetamine (MET) from biological urine samples. Read More

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http://dx.doi.org/10.1016/j.jchromb.2019.02.005DOI Listing
February 2019

Environmentally relevant concentrations of bifenthrin affect the expression of estrogen and glucocorticoid receptors in brains of female western mosquitofish.

Aquat Toxicol 2018 Dec 17;209:121-131. Epub 2018 Dec 17.

Department of Neurobiology, Physiology, and Behavior, University of California, Davis, United States.

In recent decades, pyrethroid pesticides have been deemed a safer alternative to previously used pesticides. While some evidence supports this assumption in mammals and birds, exposure to certain pyrethroids can affect concentrations of hormones vital to reproduction in fish. Thus, we hypothesized that pyrethroid exposure impacts fish reproductive behavior and the expression of genes associated with reproduction. Read More

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http://dx.doi.org/10.1016/j.aquatox.2018.12.001DOI Listing
December 2018

Size-dependent toxicity of ThO nanoparticles to green algae Chlorella pyrenoidosa.

Aquat Toxicol 2019 Feb 5;209:113-120. Epub 2019 Feb 5.

Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; School of Physical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China. Electronic address:

Thorium (Th) is a natural radioactive element present in the environment and has the potential to be used as a clean nuclear fuel. Relatively little is known about the aquatic toxicity of Th, especially in nanoparticulate form, which may be the main chemical species of Th in the natural waters. In this study, impacts of ThO nanoparticles (NPs) with two different sizes (52 ± 5 nm, s-ThOvs. Read More

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http://dx.doi.org/10.1016/j.aquatox.2019.02.003DOI Listing
February 2019

Nonlinear optical characterization of porous carbon materials by CARS, SHG and TPEF.

Spectrochim Acta A Mol Biomol Spectrosc 2019 Feb 6;214:58-66. Epub 2019 Feb 6.

Center for Green Innovation, School of Mathematics and Physics, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, University of Science and Technology Beijing, Beijing 100083, China. Electronic address:

The Coherent anti-Stokes Raman scattering (CARS) microscopy is employed to characterize porous carbon materials. The slices of two dimensional (2D) CARS images are obtained, using Z-scan technology. Furthermore, the three dimensional (3D) image of CARS is reconstructed with the Z-scanned 2D CARS images. Read More

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http://dx.doi.org/10.1016/j.saa.2019.02.010DOI Listing
February 2019

Retinal capillary perfusion: Spatial and temporal heterogeneity.

Prog Retin Eye Res 2019 Feb 12. Epub 2019 Feb 12.

Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia; Lions Eye Institute, The University of Western Australia, Perth, Australia.

The central role of the cardiovascular system is to maintain adequate capillary perfusion. The spatially and temporally heterogeneous nature of capillary perfusion has been reported in some organs. However, such heterogeneous perfusion properties have not been sufficiently explored in the retina. Read More

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http://dx.doi.org/10.1016/j.preteyeres.2019.01.001DOI Listing
February 2019

Structure of G57W mutant of human γS-crystallin and its involvement in cataract formation.

J Struct Biol 2019 Feb 12. Epub 2019 Feb 12.

Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Gopanpally, Hyderabad 500107, India; Department of Chemical Sciences, Tata Institute of Fundamental Research, 1, Homi Bhabha Road, Colaba, Mumbai 400005, India; Indian Institute of Science Education and Research, Berhampur, Odisha 760010, India. Electronic address:

A recently identified mutant of human γS-crystallin, G57W is associated with dominant congenital cataracts, the familial determinate of childhood blindness worldwide. To investigate the structural and functional changes that mediate the effect of this cataract-related mutant to compromise eye lens transparency and cause lens opacification in children, we recently reported complete sequence-specific resonance assignments of γS-G57W using a suite of heteronuclear NMR experiments. As a follow up, we have determined the 3D structure of γS-G57W and studied its conformational dynamics by solution NMR spectroscopy. Read More

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http://dx.doi.org/10.1016/j.jsb.2019.02.003DOI Listing
February 2019
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