476,137 results match your criteria Carbon Management [Journal]


Scattering characteristics of an exciton-plasmon nanohybrid made by coupling a monolayer graphene nanoflake to a carbon nanotube.

J Phys Condens Matter 2018 Dec 12. Epub 2018 Dec 12.

Advanced Computing and Simulation Laboratory, Monash University, Clayton,, Victoria 3800, Melbourne, Victoria, 3800, AUSTRALIA.

A hybrid nanostructure where a graphene nanoflake (GNF) is optically coupled to a carbon nanotube (CNT) could potentially possess enhanced sensing capabilities compared to the individual constituents whilst inheriting their high biocompatibility, favourable electrical, mechanical and spectroscopic properties. Therefore, in this paper, we investigate the scattering characteristics of an all-carbon exciton-plasmon nanohybrid which was made by coupling an elliptical GNF resonator to a semiconducting CNT gain element. We analytically model the nanohybrid as an open quantum system using cavity quantum electrodynamics. Read More

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December 2018

Self-assembled CpG oligodeoxynucleotides conjugated hollow gold nanospheres to enhance cancer-associated immunostimulation.

Colloids Surf B Biointerfaces 2018 Dec 3;175:248-255. Epub 2018 Dec 3.

Key Laboratory of Coal Conversion & New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, PR China. Electronic address:

To realize efficiently cellular uptake and enhance the immunostimulation, thiolated cytosine-phosphate-guanine (CpG) oligodeoxynucleotides (ODNs) were self-assembled on hollow gold nanospheres (HGNs) to form CpG-HGNs. The cellular uptake of CpG-HGNs in immune cells was studied in RAW 264.7 cells. Read More

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December 2018

Integrated proteome analyses of wheat glume and awn reveal central drought response proteins under water deficit conditions.

J Plant Physiol 2018 Nov 16;232:270-283. Epub 2018 Nov 16.

College of Life Science, Capital Normal University, 100048, Beijing, China. Electronic address:

Main Conclusion: Integrated proteome analyses revealed differentially accumulated proteins in the non-leaf green organs in wheat glume and awn that play important roles in photosynthesis and drought resistance. Two non-leaf green organs in wheat, glume and awn, have photosynthetic potential, contribute to grain yield, and also play roles in resistance to adverse conditions. We performed the first integrated proteome analysis of wheat glume and awn in response to water deficit. Read More

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November 2018

Spatial impacts of a multi-individual grave on microbial and microfaunal communities and soil biogeochemistry.

PLoS One 2018 12;13(12):e0208845. Epub 2018 Dec 12.

Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, Tennessee, United States of America.

Decomposing vertebrates, including humans, result in pronounced changes in surrounding soil biogeochemistry, particularly nitrogen (N) and carbon (C) availability, and alter soil micro- and macrofauna. However, the impacts of subsurface human decomposition, where oxygen becomes limited and microbial biomass is generally lower, are far less understood. The goals of this study were to evaluate the impact of human decomposition in a multi-individual, shallow (~70 cm depth) grave on soil biogeochemistry and soil microbial and nematode communities. Read More

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December 2018

Transgenerational effects of ungulates and pre-dispersal seed predators on offspring success and resistance to herbivory.

PLoS One 2018 12;13(12):e0207553. Epub 2018 Dec 12.

Departamento de Zoología, Universidad de Granada, Granada, Spain.

Herbivorous mammals and insect pre-dispersal seed predators are two types of herbivores that, despite their functional and morphological differences, tend to severely impact many plant species, highly decreasing their seed production and even imperiling the performance of their offspring through transgenerational effects. However, how they influence offspring resistance to herbivory remains largely unknown. In this study we experimentally examined the effects of ungulates and pre-dispersal seed predators on seed quality as well as on the emergence, survival and resistance to herbivory of the seedlings of a semiarid herb. Read More

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December 2018

Coordinated regulation of transcription by CcpA and the Staphylococcus aureus two-component system HptRS.

PLoS One 2018 12;13(12):e0207161. Epub 2018 Dec 12.

School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, United States of America.

The success of Staphylococcus aureus as a pathogen is due in part to its ability to adapt to changing environmental conditions using signal transduction pathways, such as metabolite- responsive regulators and two-component systems. S. aureus has a two-component system encoded by the gene pair sav0224 (hptS) and sav0223 (hptR) that regulate the hexose phosphate transport (uhpT) system in response to extracellular glucose-6-phosphate. Read More

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December 2018

Gas Reforming and Tar Decomposition Performance of NiO/SBA-15 Catalyst in Gasification of Woody Biomass.

J Air Waste Manag Assoc 2018 Dec 12. Epub 2018 Dec 12.

b Okayama University , Okayama , Japan.

In the gasification of biomass, it is necessary to limit the amount of by-product tar and increase the yields of hydrogen and carbon monoxide (syngas). Therefore, we conducted gasification and reforming experiments on woody biomass using an electric tubular furnace, to evaluate the gas reforming and tar decomposition performance of a NiO/SBA-15 catalyst. As a result, we found that this catalyst is effective for H production. Read More

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December 2018

Single-Atom Alloys as a Reductionist Approach to the Rational Design of Heterogeneous Catalysts.

Acc Chem Res 2018 Dec 12. Epub 2018 Dec 12.

Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , Massachusetts 02155 United States.

Heterogeneous catalysts are workhorses in the industrial production of most commodity and specialty chemicals, and have widespread energy and environmental applications, with the annual market value of the catalysts themselves reaching almost $20 billion in 2018. These catalysts are complex, comprising multicomponent materials and multiple structures, making their rational design challenging, if not impossible. Furthermore, typical active metals like Pt, Pd, and Rh are expensive and can be susceptible to poisoning by CO, coking, and they are not always 100% selective. Read More

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December 2018

Elevated Manganese Concentrations in United States Groundwater, Role of Land Surface-Soil-Aquifer Connections.

Environ Sci Technol 2018 Dec 12. Epub 2018 Dec 12.

U.S. Geological Survey , 4165 Spruance Road , San Diego , California 92101 , United States.

Chemical data from 43 334 wells were used to examine the role of land surface-soil-aquifer connections in producing elevated manganese concentrations (>300 μg/L) in United States (U.S.) groundwater. Read More

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December 2018

A novel anaerobic electrochemical membrane bioreactor with CNTs hollow fiber membrane cathode to mitigate membrane fouling and enhance energy recovery.

Environ Sci Technol 2018 Dec 12. Epub 2018 Dec 12.

A novel anaerobic treatment system that combines the impact of applied voltage with membrane filtration over carbon nanotubes hollow fiber membranes (CNTs-HFMs) was developed at low-temperature (15-20 °C) to mitigate membrane fouling, treat wastewater and recover energy (CH4). Herein, electro-assisted CNTs-HFMs served a dual function as the cathode and membrane filtration. In contrast with other two anaerobic membrane bioreactors (AnMBRs; polyvinylidene fluoride hollow fiber membranes and CNTs-HFMs without electro-assistance), the CNTs-HFMs with electro-assistance (-1. Read More

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December 2018
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New Insights into Black Carbon Nanoparticle-induced Dispersibility of Goethite Colloids and Configuration-dependent Sorption for Phenanthrene.

Environ Sci Technol 2018 Dec 12. Epub 2018 Dec 12.

Black carbon nanoparticles (nano-BC) are one of the most active components in pyrogenic carbonaceous matter and involve in many biogeochemical processes. This study investigated heteroaggregation of nano-BC with goethite (a model of natural mineral colloids) and the configuration effect of heteroaggregates on phenanthrene (PHE) sorption. Nano-BC could significantly enhance the dispersion of goethite via heteroaggregation when its concentration was higher than the critical concentration (Cc). Read More

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December 2018

Fluorescein sodium ligand-modified silicon nanoparticles produce ultrahigh fluorescence with robust pH- and photo-stability.

Chem Commun (Camb) 2018 Dec 12. Epub 2018 Dec 12.

Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Centre of Suzhou Nano Science and Technology (NANO-CIC), Soochow University, Suzhou, Jiangsu 215123, China.

Water-dispersed silicon nanoparticles (SiNPs) are facilely prepared in an aqueous phase via microwave-assisted synthesis. The whole synthetic procedure is accomplished in a one-pot microwave reaction, without the requirement of additional surface modification. Remarkably, the resultant SiNPs feature ultrahigh fluorescence (photoluminescent quantum yield (PLQY): ∼90%), robust pH- and photo-stability, and favourable biocompatibility. Read More

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December 2018

An exploration of disinfection by-products formation and governing factors in chlorinated swimming pool water.

J Water Health 2018 Dec;16(6):861-892

Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2600 GA Delft, The Netherlands and Strategic Centre, Waternet, 1096 AC Amsterdam, The Netherlands.

This paper investigates disinfection by-products (DBPs) formation and their relationship with governing factors in chlorinated swimming pools. The study compares concentrations of DBPs with WHO guidelines for drinking water quality recommended to screen swimming pool water quality. The statistical analysis is based on a global database of 188 swimming pools accumulated from 42 peer-reviewed journal publications from 16 countries. Read More

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December 2018

Vallitalea okinawensis sp. nov., isolated from Okinawa Trough sediment and emended description of the genus Vallitalea.

Int J Syst Evol Microbiol 2018 Dec 12. Epub 2018 Dec 12.

4​RCEECAS Joint-Lab of Microbial Technology for Environmental Science, Beijing, PR China.

A polyphasic study was conducted to characterize an obligately anaerobic bacterial strain, S15, that was isolated from Okinawa Trough sediment. Strain S15 was Gram-stain-negative, non-motile and rod-shaped. Spores were not observed. Read More

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December 2018

Molecular Determinants for the Rate Acceleration in the Claisen Rearrangement Reaction.

J Phys Chem B 2018 Dec 12. Epub 2018 Dec 12.

The Claisen rearrangement is a carbon-carbon bond-forming, pericyclic reaction of fundamental importance due to its relevance in synthetic and mechanistic investigations of organic and biological chemistry. Despite continued efforts, the molecular origins of the rate acceleration in going from the aqueous phase into the protein is still incompletely understood. In the present work the rearrangement reaction for allyl-vinyl-ether (AVE), its dicarboxylated variant (AVE-(CO)) and the biologically relevant substrate chorismate is investigated in gas phase, water and in chorismate mutase. Read More

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December 2018

Nickel-Salen Type Polymer as Conducting Agent and Binder for Carbon-Free Cathodes in Lithium-Ion Batteries.

ACS Appl Mater Interfaces 2018 Dec 12. Epub 2018 Dec 12.

Systematic physical and electrochemical characterizations revealed unique positive multifunction of a polymeric salen-type nickel(II) complex, poly[Ni(CH-Salen)], as an additive for conventional cathodes in lithium-ion (Li-ion) batteries. Due to its promising electrochemical and mechanical properties, combined with its unique three-dimensional (3D) web-like electron-network structure, the redox-active-organometallic polymer can eliminate conductive carbon and replace significant portion of polyvinylidene fluoride (PVdF) binder that have been used in conventional LiFePO cathodes. By replacing such electrochemically inactive components (i. Read More

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December 2018

Topography of 11C-Pittsburgh compound B uptake in Alzheimer's disease: a voxel-based investigation of cortical and white matter regions.

Braz J Psychiatr 2018 Dec 6. Epub 2018 Dec 6.

Núcleo de Apoio à Pesquisa em Neurociência Aplicada (NAPNA), USP, São Paulo, SP, Brazil.

Objective: To compare results of positron emission tomography (PET) with carbon-11-labeled Pittsburgh compound B (11C-PIB) obtained with cerebellar or global brain uptake for voxel intensity normalization, describe the cortical sites with highest tracer uptake in subjects with mild Alzheimer's disease (AD), and explore possible group differences in 11C-PIB binding to white matter.

Methods: 11C-PIB PET scans were acquired from subjects with AD (n=17) and healthy elderly controls (n=19). Voxel-based analysis was performed with statistical parametric mapping (SPM). Read More

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December 2018

A two-photon fluorescent probe for basal formaldehyde imaging in zebrafish and visualization of mitochondrial damage induced by FA stress.

Analyst 2018 Dec 12. Epub 2018 Dec 12.

Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials, Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Analytical and Testing Centre, Beijing Institute of Technology, Beijing 100081, P. R. China.

The detection of mitochondrial formaldehyde (FA) is of great significance because FA is generated through a one-carbon formaldehyde cycle in mitochondria, and abnormal elevations in FA levels can damage mitochondria by decreasing the mitochondrial membrane potential and inhibiting mitochondrial respiration. Herein, a mitochondria-targetable two-photon probe (Mito-FA-FP) has been well demonstrated. Mito-FA-FP is conjugated with hydrazine as the FA-reactive site and a pyridine derivate as the mitochondria-targetable moiety. Read More

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December 2018

Enhancer of Zeste Homologue 2 Inhibition Attenuates TGF-β Dependent Hepatic Stellate Cell Activation and Liver Fibrosis.

Cell Mol Gastroenterol Hepatol 2018 Sep 15;7(1):197-209. Epub 2018 Sep 15.

Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota. Electronic address:

Background & Aims: Transdifferentiation of hepatic stellate cells (HSCs) into myofibroblasts is a key event in the pathogenesis of liver fibrosis. Transforming growth factor β (TGF-β) and platelet-derived growth factor (PDGF) are canonical HSC activators after liver injury. The aim of this study was to analyze the epigenetic modulators that differentially control TGF-β and PDGF signaling pathways. Read More

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September 2018

Comparable Nutrient Uptake across Diel Cycles by Three Distinct Phototrophic Communities.

Environ Sci Technol 2018 Dec 12. Epub 2018 Dec 12.

Department of Civil and Environmental Engineering , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States.

The capacity of microalgae to advance the limit of technology of nutrient recovery and accumulate storage carbon make them promising candidates for wastewater treatment. However, the extent to which these capabilities are influenced by microbial community composition remains poorly understood. To address this knowledge gap, 3 mixed phototrophic communities sourced from distinct latitudes within the continental United States (28° N, Tampa, FL; 36° N, Durham, NC; and 40° N, Urbana, IL) were operated in sequencing batch reactors (8 day solids residence time, SRT) subjected to identical diel light cycles with media addition at the start of the nighttime period. Read More

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December 2018

Cobalt, nitrogen-doped porous carbon nanosheet-assembled flowers from metal-coordinated covalent organic polymers for efficient oxygen reduction.

ACS Appl Mater Interfaces 2018 Dec 12. Epub 2018 Dec 12.

The breakthrough of non-precious metal catalysts replacing platinum-based catalysts towards the oxygen reduction reaction (ORR) is extremely urgent for the development of high-efficiency energy conversation systems. Herein, a solution-processed condensation polymerization using cyanuric chloride and piperazine as the monomers was proposed for synthesis of a nitrogen-rich covalent organic polymer (COP). High contents of precisely tailored pyridinic-N within the COP facilitate the formation of the Co-N coordination between Co ions and N species. Read More

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December 2018

Mediators of Change in Capnometry Guided Respiratory Intervention for Panic Disorder.

Appl Psychophysiol Biofeedback 2018 Dec 11. Epub 2018 Dec 11.

Institute of Living, 200 Retreat Avenue, Hartford, CT, 06106, USA.

Capnometry guided respiratory interventions have shown promising results in the treatment of panic disorder, but mechanisms of change are not yet well-understood. The current study examined changes in end-tidal carbon dioxide (ETCO), anxiety sensitivity, and perceived control as mediators of panic symptom change. Sixty-nine adults with panic disorder received 4 weeks of respiratory training, and panic symptom severity and potential mediators were assessed at Pre-treatment, Mid-treatment, Post-treatment, 2-month follow-up, and 12-month follow-up. Read More

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December 2018

Aerosol and pollutant characteristics in Delhi during a winter research campaign.

Environ Sci Pollut Res Int 2018 Dec 11. Epub 2018 Dec 11.

Indian Metrological Department, Lodhi Road, New Delhi, 110 003, India.

Urban areas in developing countries are major sources of carbonaceous aerosols and air pollutants, pointing out the need for a detailed assessment of their levels and origin close to the source. A multi-instrument research campaign was performed in Delhi during December 2015-February 2016 aimed at exploring the pollution levels and the contribution of various sources to particulate matter (PM) concentrations, black carbon (BC) aerosols, and trace gases. The weak winds (< 5-6 m s) along with the shallow boundary layer favoured the formation of thick and persistent fog conditions, which along with the high BC (24. Read More

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December 2018

Hydrothermal carbonization of arecanut husk biomass: fuel properties and sorption of metals.

Environ Sci Pollut Res Int 2018 Dec 11. Epub 2018 Dec 11.

Department of Bioenergy, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.

In this study, hydrothermal carbonization of arecanut husk and its potential application as an alternate solid fuel and heavy metal sorption (adsorbent) was attempted. Arecanut husk (AH) treated with citric acid for 9 h resulted in the hydrochar yield of 58.7% with increased fixed carbon from 17 to 39. Read More

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December 2018

The potential protective effect of two actinomycete extracts against carbon tetrachloride-induced hepatotoxicity in rats.

Environ Sci Pollut Res Int 2018 Dec 11. Epub 2018 Dec 11.

Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.

The aim of this study was to investigate the potential protective effect of two extracts derived from two soil actinomycete strains, designated S19 and G30, against CCl4-induced hepatotoxicity in male rats. Sixty-four male rats were divided into four groups of 16 rats per group. The first group was a control group given corn oil and the nutritive medium which is composed of a mixture of the two used media. Read More

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December 2018

Sediment pollution in an urban water supply lake in southern Brazil.

Environ Monit Assess 2018 Dec 11;191(1):12. Epub 2018 Dec 11.

Soil Department, UFRGS, Porto Alegre, Brazil.

Urbanization and anthropogenic activities create many environmental issues in urban water supply reservoirs, especially in metropolitan regions. Thus, this study was carried out aiming to evaluate the variance in the physical-chemical characteristics of bottom sediment along the Lake Guaíba, Brazil. Lake Guaíba is a freshwater lake situated in a metropolitan region in southern Brazil, being the main water supply to the region. Read More

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December 2018

Mitochondrial health and muscle plasticity after spinal cord injury.

Eur J Appl Physiol 2018 Dec 11. Epub 2018 Dec 11.

James J. Peters VA Medical Center, Bronx, NY, USA.

Mitochondria are responsible for aerobic respiration and large-scale ATP production in almost all cells of the body. Their function is decreased in many neurodegenerative and cardiovascular disease states, in metabolic disorders such as type II diabetes and obesity, and as a normal component of aging. Disuse of skeletal muscle from immobilization or unloading triggers alterations of mitochondrial density and activity. Read More

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December 2018
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A short-term stimulation of ethanol enhances the effect of magnetite on anaerobic digestion.

Appl Microbiol Biotechnol 2018 Dec 12. Epub 2018 Dec 12.

Institute of Environment Pollution Control and Treatment, Zhejiang University, Hangzhou, 310058, China.

Conductive iron oxides (CIO) have been proved recently to facilitate the anaerobic microbial syntrophy based on the direct interspecies electron transfer (DIET) in batch experiments. However, the effect of CIO was always insignificant in anaerobic digestion (AD) reactor especially when the DIET-based syntrophic partners were absent. In this study, the effect of magnetite on performance of AD system with sucrose as a sole carbon source was investigated, but limited enhancement was achieved during the first 36-day operation. Read More

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December 2018

Glycerol inhibition of melanin biosynthesis in the environmental Aeromonas salmonicida 34mel.

Appl Microbiol Biotechnol 2018 Dec 11. Epub 2018 Dec 11.

Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.

The environmental strain Aeromonas salmonicida subsp. pectinolytica 34mel produces abundant melanin through the homogentisate pathway in several culture media, but unexpectedly not when grown in a medium containing glycerol. Using this observation as a starting point, this study investigated the underlying causes of the inhibition of melanin synthesis by glycerol, to shed light on factors that affect melanin production in this microorganism. Read More

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December 2018
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Colorimetric determination of glucose in solution and via the use of a paper strip by exploiting the peroxidase and oxidase mimicking activity of bimetallic Cu-Pd nanoparticles deposited on reduced graphene oxide, graphitic carbon nitride, or MoS nanosheets.

Mikrochim Acta 2018 Dec 11;186(1):13. Epub 2018 Dec 11.

Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India.

This work describes the preparation of bimetallic Cu-Pd nanoparticles (NPs) on supports like reduced graphene oxide (rGO), graphitic carbon nitride (g-CN) and MoS sheets with a size of <10 nm. rGO is found to be the best support for synthesizing Cu-Pd NPs with controlled shape, size and oxidation state. The Cu-Pd/rGO nanocomposite also demonstrated the best peroxidase and oxidase mimicking activity compared to Cu-Pd/g-CN and Cu-Pd/MoS nanocomposites. Read More

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December 2018
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Consecutive ligand-based PCET processes affording a doubly reduced nickel pyrazinedithiolate which transforms into a metal hydride required to evolve H.

Dalton Trans 2018 Dec 12. Epub 2018 Dec 12.

Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan. and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan and Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.

Our DFT results demonstrate that hydrogen evolution from water catalyzed by a nickel pyradinedithiolate (dcpdt) molecular hydrogen evolution catalyst [NiII(dcpdt)2]2- proceeds via the formation of a square-planar nickel(ii) hydride intermediate which is given by unprecedented structural transformation of a doubly reduced triply protonated species [NiII(dcpdtH2)(dcpdtH)]-, afforded as a result of two consecutive ligand-based reductions of [NiII(dcpdt)(dcpdtH)]- through proton-coupled electron transfer (PCET) pathways. Read More

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December 2018

Functional Probiotic Assessment and Cholesterol-Lowering Efficacy of sp. Associated with Arid Lands Living-Hosts.

Biomed Res Int 2018 14;2018:1654151. Epub 2018 Nov 14.

Université de Tunis El Manar, Faculté des Science de Tunis, LR03ES03 Laboratoire Microorganismes et Biomolécules Actives, 2092, Campus Universitaire, Tunis, Tunisia.

The research and the selection of novel probiotic strains from novel niches are receiving increased attention on their proclaimed health benefits to both humans and animals. This study aimed to evaluate the functional properties of strains from arid land living-hosts and to select strains with cholesterol-lowering property and , for use as probiotics. They were assessed for acid and bile tolerance, antibiotic susceptibility, membrane properties, antibacterial activity, antiadhesive effect against pathogens to host cell lines, and cholesterol assimilation . Read More

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November 2018

Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform.

Front Chem 2018 27;6:594. Epub 2018 Nov 27.

Department of Organic Chemistry, A. M. Butlerov' Chemistry Institute, Kazan Federal University, Kazan, Russia.

New solid-contact potentiometric sensors have been developed for hydrogen phosphate recognition on the basis of ionic liquids containing tetrasubstituted derivatives of thiacalix[4]arene in and conformations with trimethyl- and triethylammonium fragments at the lower rim substituents. The recognition of selected anions including carbonate, hydrogen phosphate, perchlorate, oxalate, picrate, and EDTA was conducted using electrochemical impedance spectroscopy with ferricyanide redox probe. For the potentiometric sensor assembling, the ionic liquids were stabilized by multiwalled carbon nanotubes and carbon black deposited on the glassy carbon electrode. Read More

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November 2018

Depth and Dissolved Organic Carbon Shape Microbial Communities in Surface Influenced but Not Ancient Saline Terrestrial Aquifers.

Front Microbiol 2018 27;9:2880. Epub 2018 Nov 27.

Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden.

The continental deep biosphere is suggested to contain a substantial fraction of the earth's total biomass and microorganisms inhabiting this environment likely have a substantial impact on biogeochemical cycles. However, the deep microbial community is still largely unknown and can be influenced by parameters such as temperature, pressure, water residence times, and chemistry of the waters. In this study, 21 boreholes representing a range of deep continental groundwaters from the Äspö Hard Rock Laboratory were subjected to high-throughput 16S rRNA gene sequencing to characterize how the different water types influence the microbial communities. Read More

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November 2018

Soil Matrix Determines the Outcome of Interaction Between Mycorrhizal Symbiosis and Biochar for Growth and Nutrition.

Front Microbiol 2018 27;9:2862. Epub 2018 Nov 27.

Laboratory of Fungal Biology, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia.

Biochar has been heralded as a multipurpose soil amendment to sustainably increase soil fertility and crop yields, affect soil hydraulic properties, reduce nutrient losses, and sequester carbon. Some of the most spectacular results of biochar (and organic nutrient) inputs are the soils in the Amazon, dark anthropogenic soils with extremely high fertility sustained over centuries. Such soil improvements have been particularly difficult to achieve on a short run, leading to speculations that biochar may need to age (weather) in soil to show its best. Read More

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November 2018

Membrane-Located Expression of Thioesterase From Enhances Free Fatty Acid Production With Decreased Toxicity in sp. PCC6803.

Front Microbiol 2018 27;9:2842. Epub 2018 Nov 27.

Bio-X-Renji Hospital Research Center, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

It has been previously reported that photosynthetic production of extracellular free fatty acids (FFAs) in cyanobacteria was realized by thioesterases (TesA) mediated hydrolysis of fatty acyl-ACP in cytosol and excretion of the FFA outside of the cell. However, two major issues related to the genetically modified strains need to be addressed before the scale-up commercial application becomes possible: namely, the toxicity of FFAs, and the diversity of carbon lengths of fatty acids that could mimic the fossil fuel. To address those issues, we hypothesized that generating FFAs near membrane could facilitate rapid excretion of the FFA outside of the cell and thus decrease toxicity caused by intracellular FFAs in the cytosolic expression of thioesterase. Read More

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November 2018

Inositol-Requiring Enzyme 1 Alpha Endoribonuclease Specific Inhibitor STF-083010 Alleviates Carbon Tetrachloride Induced Liver Injury and Liver Fibrosis in Mice.

Front Pharmacol 2018 27;9:1344. Epub 2018 Nov 27.

The Fourth Affiliated Hospital, Anhui Medical University, Hefei, China.

Accumulating data demonstrated that hepatic endoplasmic reticulum (ER) stress was involved in the pathogenesis of liver fibrosis. Long-term chronic hepatocyte death contributed to liver fibrosis initiation and progression. Previous researches reported that ER stress sensor inositol-requiring enzyme 1 alpha (IRE1α) was first activated in the process of liver fibrosis. Read More

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November 2018

Approach of minimal invasive monitoring and initial treatment of the septic patient in emergency medicine.

Open Access Emerg Med 2018 20;10:183-191. Epub 2018 Nov 20.

Emergency Medicine, Universidad del Rosario, Bogotá, Colombia.

Sepsis and septic shock constitute a complex disease condition that requires the engagement of several medical specialties. A great number of patients with this disease are constantly admitted to the emergency department, which warrants the need for emergency physicians to lead in the recognition and early management of septic patients. Timely and appropriate interventions may help reduce mortality in a disease with an unacceptably high mortality rate. Read More

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November 2018

Wanted: a fair carbon tax.

Authors:

Nature 2018 12;564(7735):161

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December 2018

Dietary intake and food sources of one-carbon metabolism nutrients in preschool aged children.

Eur J Clin Nutr 2018 Dec 11. Epub 2018 Dec 11.

Faculty of Health and Medicine, School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, 2308, Australia.

Background: It is hypothesised that epigenetic mechanisms including DNA methylation may underlie the relationship between early-life nutrition and child cognitive outcomes. This study aimed to identify dietary patterns associated with the intake of one-carbon metabolism nutrients in children aged 2-3 years.

Methods: A validated 120-item semi-quantitative food frequency questionnaires at 2-3 years of age were used to estimate the intake of one-carbon metabolism nutrients (methionine, folate, choline and vitamins B2, B6, B12) and to quantify mean number of serves consumed of the food groups specified by the Australian Guide to Healthy Eating (AGHE). Read More

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December 2018

Seasonal and ecohydrological regulation of active microbial populations involved in DOC, CO, and CH fluxes in temperate rainforest soil.

ISME J 2018 Dec 11. Epub 2018 Dec 11.

Department of Microbiology & Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada.

The Pacific coastal temperate rainforest (PCTR) is a global hot-spot for carbon cycling and export. Yet the influence of microorganisms on carbon cycling processes in PCTR soil is poorly characterized. We developed and tested a conceptual model of seasonal microbial carbon cycling in PCTR soil through integration of geochemistry, micro-meteorology, and eukaryotic and prokaryotic ribosomal amplicon (rRNA) sequencing from 216 soil DNA and RNA libraries. Read More

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December 2018

The soil organic matter decomposition mechanisms in ectomycorrhizal fungi are tuned for liberating soil organic nitrogen.

ISME J 2018 Dec 11. Epub 2018 Dec 11.

Department of Biology, Microbial Ecology Group, Lund University, Ecology Building, SE-223 62, Lund, Sweden.

Many trees form ectomycorrhizal symbiosis with fungi. During symbiosis, the tree roots supply sugar to the fungi in exchange for nitrogen, and this process is critical for the nitrogen and carbon cycles in forest ecosystems. However, the extents to which ectomycorrhizal fungi can liberate nitrogen and modify the soil organic matter and the mechanisms by which they do so remain unclear since they have lost many enzymes for litter decomposition that were present in their free-living, saprotrophic ancestors. Read More

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December 2018

Author Correction: Thermal transport crossover from crystalline to partial-crystalline partial-liquid state.

Nat Commun 2018 12 11;9(1):5329. Epub 2018 Dec 11.

Aachen Institute for Advanced Study in Computational Engineering Science (AICES), RWTH Aachen University, Aachen 52062, Germany.

The original version of this Article incorrectly omitted an affiliation of Sebastian Volz: 'LIMMS/CNRS-IIS(UMI2820) Institute of Industrial Science, University of Tokyo 4-6-1 Komaba, Meguro-ku Tokyo 153-8505 JAPAN'. This has now been corrected in both the PDF and HTML versions of the Article. Read More

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December 2018

Terpene Biosynthesis in Red Algae is Catalyzed by Microbial Type but not Typical Plant Terpene Synthases.

Plant Physiol 2018 Dec 11. Epub 2018 Dec 11.

University of Tennessee CITY: Knoxville STATE: Tennessee POSTAL_CODE: 37996 United States Of America [US]

Red algae (Rhodophyta) and land plants belong to the monophyletic clade Archaeplastida and taxa of both groups are rich producers of terpene secondary metabolites. The terpene carbon skeletons of land plants are made by two types of terpene synthases: typical plant terpene synthases and microbial-type terpene synthases (MTPSLs); however, terpene biosynthesis in red algae is poorly understood. By systematic sequence analysis of seven genomes and 34 transcriptomes of red algae, MTPSL homologs were identified within one genome and two transcriptomes, whereas no homolog of typical plant terpene synthase genes was found. Read More

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December 2018
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Theoretical calculations of carbon-hydrogen spin-spin coupling constants.

Authors:
Leonid B Krivdin

Prog Nucl Magn Reson Spectrosc 2018 Oct 13;108:17-73. Epub 2018 Oct 13.

A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russia. Electronic address:

Structural applications of theoretical calculations of carbon-hydrogen spin-spin coupling constants are reviewed covering papers published mainly during the last 10-15 years with a special emphasis on the most notable studies of hybridization, substitution and stereoelectronic effects together with the investigation of hydrogen bonding and intermolecular interactions. The wide scope of different applications of calculated carbon-hydrogen couplings in the structural elucidation of particular classes of organic and bioorganic molecules is reviewed, concentrating mainly on saturated, unsaturated, aromatic and heteroaromatic compounds and their functional derivatives, as well as on natural compounds and carbohydrates. The review is dedicated to Professor Emeritus Michael Barfield in view of his invaluable pioneering contribution to this field. Read More

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October 2018

Evolution of Functional Bacteria in a Polycyclic Aromatic Hydrocarbon (PAH)-Degrading Bioreactor.

Water Environ Res 2018 Dec;90(12):2090-2099

In this study a laboratory-scale sequencing batch bioreactor was constructed, using phenanthrene/pyrene as the sole carbon-source, to demonstrate the removal efficiencies of polycyclic aromatic hydrocarbons (PAHs) and the evolution process of a functional bacterial community. The removal rates were: COD, 51.4 to 76. Read More

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December 2018

Biomass, Nitrogen Uptake and Content of Depends on Strength of Swine Lagoon Water.

Water Environ Res 2018 Dec;90(12):2066-2074

Studies focusing on manipulation of growth conditions for duckweed to promote biomass for crop nutrient supply, are scarce. The effects of swine lagoon water (SLW) concentration and its replenishment and harvest regimes on selected properties of were investigated. Dry matter and average growth rate of were not affected by SLW replenishment periods, whereas the properties decreased with increasing concentration of SLW. Read More

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December 2018

Root mediated uptake of Salmonella is different from phyto-pathogen and associated with the colonization of edible organs.

BMC Plant Biol 2018 Dec 11;18(1):344. Epub 2018 Dec 11.

Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, 560012, India.

Background: Pre-harvest contamination of fruits and vegetables by Salmonella in fields is one of the causes of food-borne outbreaks. Natural openings like stomata, hydathodes and fruit cracks are known to serve as entry points. While there are reports indicating that Salmonella colonize and enter root through lateral root emerging area, further investigations regarding how the accessibility of Salmonella to lateral root is different from phyto-pathogenic bacteria, the efficacy of lateral root to facilitate entry have remained unexplored. Read More

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December 2018

Effects of time delay and body temperature on measurements of central venous oxygen saturation, venous-arterial blood carbon dioxide partial pressures difference, venous-arterial blood carbon dioxide partial pressures difference/arterial-venous oxygen difference ratio and lactate.

BMC Anesthesiol 2018 Dec 11;18(1):187. Epub 2018 Dec 11.

Department of Critical Care Medicine, the Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao, 266000, China.

Background: Central venous oxygen saturation (ScvO), venous-arterial blood carbon dioxide partial pressures difference (Pv-aCO), venous-arterial blood carbon dioxide partial pressures difference/arterial-venous oxygen difference ratio (Pv-aCO/Ca-vO) and lactate are important parameters employed during shock resuscitation. We designed this study to confirm the effects of time delay and body temperature on measurements of these four parameters.

Methods: Arterial and central venous blood samples were simultaneously drawn by plastic syringes via indwelling intra-arterial and central venous catheters from critically ill patients. Read More

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December 2018

A genome-scale metabolic model of potato late blight suggests a photosynthesis suppression mechanism.

BMC Genomics 2018 Dec 11;19(Suppl 8):863. Epub 2018 Dec 11.

Grupo de Bioinformática y Biología de Sistemas, Universidad Nacional del Colombia - Instituto de Genética, Calle 53- Carrera 32, Edificio 426, Bogotá, Colombia.

Background: Phytophthora infestans is a plant pathogen that causes an important plant disease known as late blight in potato plants (Solanum tuberosum) and several other solanaceous hosts. This disease is the main factor affecting potato crop production worldwide. In spite of the importance of the disease, the molecular mechanisms underlying the compatibility between the pathogen and its hosts are still unknown. Read More

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December 2018