6,486 results match your criteria wood samples


Beyond taxonomy: Validating functional inference approaches in the context of fish-farm impact assessments.

Mol Ecol Resour 2021 May 10. Epub 2021 May 10.

Institute of Marine Research, Tromsø, Norway.

Characterization of microbial assemblages via environmental DNA metabarcoding is increasingly being used in routine monitoring programs due to its sensitivity and cost-effectiveness. Several programs have been developed recently which infer functional profiles from 16S rRNA gene data using hidden-state prediction (HSP) algorithms. These might offer an economic and scalable alternative to shotgun metagenomics. Read More

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Evaluation of the Microba Community Profiler for Taxonomic Profiling of Metagenomic Datasets From the Human Gut Microbiome.

Front Microbiol 2021 20;12:643682. Epub 2021 Apr 20.

Microba Life Sciences Limited, Brisbane, QLD, Australia.

A fundamental goal of microbial ecology is to accurately determine the species composition in a given microbial ecosystem. In the context of the human microbiome, this is important for establishing links between microbial species and disease states. Here we benchmark the Microba Community Profiler (MCP) against other metagenomic classifiers using 140 moderate to complex microbial communities and a standardized reference genome database. Read More

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Colonization with Fluoroquinolone-Resistant Enterobacterales Decreases the Effectiveness of Fluoroquinolone Prophylaxis in Hematopoietic Cell Transplant Recipients.

Clin Infect Dis 2021 May 6. Epub 2021 May 6.

Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, USA.

Background: Levofloxacin prophylaxis is recommended to prevent Gram-negative bloodstream infections (BSIs) in patients with prolonged chemotherapy-induced neutropenia. However, increasing fluoroquinolone resistance may decrease the effectiveness of this approach.

Methods: We assessed the prevalence of colonization with fluoroquinolone-resistant Enterobacterales (FQRE) among patients admitted for hematopoietic cell transplantation (HCT) from November 2016-August 2019 and compared the risk of Gram-negative BSI between FQRE-colonized and non-colonized patients. Read More

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Effects of Isochoric Freezing Conditions on Cut Potato Quality.

Foods 2021 Apr 29;10(5). Epub 2021 Apr 29.

Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA 94720, USA.

Isochoric freezing is a pressure freezing technique that could be used to retain the beneficial effects of food storage at temperatures below their freezing point without ice damage. In this study, potato cylinders were frozen in an isochoric system and examined using full factorial combinations of three processing procedures (immersed in water, vacuum-packed and immersed in ascorbic acid solution), four freezing temperatures/pressures (-3 °C/37 MPa, -6 °C/71 MPa, -9 °C/101 MPa and -15 °C/156 MPa) and two average compression rates (less than 0.02 and more than 0. Read More

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Metabolic flexibility allows bacterial habitat generalists to become dominant in a frequently disturbed ecosystem.

ISME J 2021 May 3. Epub 2021 May 3.

Department of Microbiology, Biomedicine Discovery Institute, Clayton, VIC, Australia.

Ecological theory suggests that habitat disturbance differentially influences distributions of habitat generalist and specialist species. While well-established for macroorganisms, this theory has rarely been explored for microorganisms. Here we tested these principles in permeable (sandy) sediments, ecosystems with much spatiotemporal variation in resource availability and physicochemical conditions. Read More

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Mitigation of bacterial spot disease induced biotic stress in Capsicum annuum L. cultivars via antioxidant enzymes and isoforms.

Sci Rep 2021 May 3;11(1):9445. Epub 2021 May 3.

Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, 60800, Pakistan.

Bacterial spot, caused by a group of Xanthomonads (Xanthomonas spp.), is a devastating disease. It can adversely affect the Capsicum annum productivity. Read More

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Spatial distribution, source analysis, and ecological risk assessment of polycyclic aromatic hydrocarbons (PAHs) in the sediments from rivers emptying into Jiaozhou Bay, China.

Mar Pollut Bull 2021 Apr 30;168:112394. Epub 2021 Apr 30.

Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266071, China.

Sediment samples had been collected from five major rivers into Jiaozhou Bay, China to study the spatial distribution, sources, and ecological risks of 16 priority polycyclic aromatic hydrocarbons (PAHs) in April 2018. Results showed that the contents of PAHs in the sediments from the five rivers were significantly different. The distribution trend was Dagu < Yang < Licun < Baisha < Moshui River. Read More

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Investigating variability in microbial community composition in replicate environmental DNA samples down lake sediment cores.

PLoS One 2021 3;16(5):e0250783. Epub 2021 May 3.

Coastal and Freshwater Group, Cawthron Institute, Nelson, New Zealand.

Lake sediments are natural archives that accumulate information on biological communities and their surrounding catchments. Paleolimnology has traditionally focussed on identifying fossilized organisms to reconstruct past environments. In the last decade, the application of molecular methodologies has increased in paleolimnological studies, but further research investigating factors such as sample heterogeneity and DNA degradation are required. Read More

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The effects of paints and moisture content on the indoor air emissions from pinewood (Pinus sylvestris) boards.

Indoor Air 2021 May 3. Epub 2021 May 3.

Department of Civil Engineering, Aalto University, Espoo, Finland.

The emissions of volatile organic compounds (VOCs) from building materials may significantly contribute to indoor air pollution, and VOCs have been associated with odor annoyance and adverse health effects. Wood materials together with coatings are commonly used indoors for furniture and large surfaces such as walls, floors, and ceilings. This leads to high surface-to-volume ratios, and therefore, these materials may participate remarkably to the VOC levels of indoor environment. Read More

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Lack of specialist nidicoles as a characteristic of mite assemblages inhabiting nests of the ground-nesting wood warbler, Phylloscopus sibilatrix (Aves: Passeriformes).

Exp Appl Acarol 2021 May 3;84(1):149-170. Epub 2021 May 3.

Department of General Zoology, Faculty of Biology Adam, Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland.

Bird and mammal nests provide microhabitats that support a range of other species, including invertebrates. However, the variation between communities of nest-dwelling invertebrates in different nests is poorly understood. The major aim of this study was to analyze the assemblage structure of mites from the suborder Uropodina (Acari: Mesostigmata) and from superfamily Crotonioidea (Acari: Oribatida) inhabiting nests of the wood warbler, Phylloscopus sibilatrix (Aves: Passeriformes), located on a forest floor in Białowieża Forest, in eastern Poland. Read More

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Cell Wall Layer Induced in Xylem Fibers of Flax Upon Gravistimulation Is Similar to Constitutively Formed Cell Walls of Bast Fibers.

Front Plant Sci 2021 6;12:660375. Epub 2021 Apr 6.

Laboratory of Plant Cell Growth Mechanisms, Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, Kazan, Russia.

In the fibers of many plant species after the formation of secondary cell walls, cellulose-enriched cell wall layers (often named G-layers or tertiary cell walls) are deposited which are important in many physiological situations. Flax ( L.) phloem fibers constitutively develop tertiary cell walls during normal plant growth. Read More

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Interconversion between methoxylated, hydroxylated and sulfated metabolites of PCB 3 in whole poplar plants.

Sci Total Environ 2021 Apr 27;785:147341. Epub 2021 Apr 27.

Department of Civil and Environmental Engineering and IIHR Hydroscience and Engineering, The University of Iowa, Iowa City, IA 52242, United States.

Methoxylated polychlorinated biphenyls (MeO-PCBs) are overlooked metabolites of PCBs. In general, they are more toxic to plants than their parent congeners. However, information on the fate of MeO-PCBs and the relationship between methoxylated, hydroxylated and sulfated metabolites of PCBs in plants is scarce. Read More

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Human Brain Lipidomics: Utilities of Chloride Adducts in Flow Injection Analysis.

Life (Basel) 2021 Apr 28;11(5). Epub 2021 Apr 28.

Department of Pathology, Oregon Health Science University, 3181 SW Sam Jackson PK. Rd., Portland, OR 97239, USA.

Ceramides have been implicated in a number of disease processes. However, current means of evaluation with flow infusion analysis (FIA) have been limited primarily due to poor sensitivity within our high-resolution mass spectrometry lipidomics analytical platform. To circumvent this deficiency, we investigated the potential of chloride adducts as an alternative method to improve sensitivity with electrospray ionization. Read More

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Water Resistance and Creep Behavior of Heat-Treated Moso Bamboo Determined by the Stepped Isostress Method.

Polymers (Basel) 2021 Apr 13;13(8). Epub 2021 Apr 13.

Department of Forestry, National Chung Hsing University, Taichung 402, Taiwan.

The influence of heat treatment on the physico-mechanical properties, water resistance, and creep behavior of moso bamboo () was determined in this study. The results revealed that the density, moisture content, and flexural properties showed negative relationships with the heat treatment temperature, while an improvement in the dimensional stability (anti-swelling efficiency and anti-water absorption efficiency) of heat-treated samples was observed during water absorption tests. Additionally, the creep master curves of the untreated and heat-treated samples were successfully constructed using the stepped isostress method (SSM) at a series of elevated stresses. Read More

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Experimental Study of Straw-Based Eco-Panel Using a Small Ignition Initiator.

Polymers (Basel) 2021 Apr 20;13(8). Epub 2021 Apr 20.

EKOPANELY SERVIS s.r.o., Jedousov 64, 535 01 Prelouc, Czech Republic.

Straw, a natural cellulose-based material, has become part of building elements. Eco-panels, compressed straw in a cardboard casing, is used as building insulation. Eco-panel is a secondary product with excellent insulating properties. Read More

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Chemical Composition and Source Apportionment of Wintertime Airborne PM in Changchun, Northeastern China.

Int J Environ Res Public Health 2021 Apr 20;18(8). Epub 2021 Apr 20.

Department of Library, Jilin University of Finance and Economics, Changchun 130117, China.

This study presents field observations and laboratory analyses of wintertime airborne particulate matter (PM) and its chemical components in the Changchun metropolitan area, the geographical center of northeastern China. Twenty-four hour PM filter samples were collected from 23 December 2011 to 31 January 2012 at four sites in the types of traffic, residential, campus, and a near-city rural village, respectively. Daily PM concentrations ranged from 49 to 466 µg m, with an arithmetic average of 143 µg m. Read More

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Taxonomy and Phylogeny of the Wood-Inhabiting Fungal Genus with Descriptions of Three New Species from East Asia.

J Fungi (Basel) 2021 Apr 16;7(4). Epub 2021 Apr 16.

Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China.

Three new wood-inhabiting fungi, , and spp. nov., are proposed based on a combination of morphological features and molecular evidence. Read More

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Production of Phytotoxic Metabolites by Botryosphaeriaceae in Naturally Infected and Artificially Inoculated Grapevines.

Plants (Basel) 2021 Apr 19;10(4). Epub 2021 Apr 19.

National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University, Locked Bag 588, Wagga Wagga, NSW 2678, Australia.

Grapevine trunk diseases (GTDs) are considered a serious problem to viticulture worldwide. Several GTD fungal pathogens produce phytotoxic metabolites (PMs) that were hypothesized to migrate to the foliage where they cause distinct symptoms. The role of PMs in the expression of Botryosphaeria dieback (BD) symptoms in naturally infected and artificially inoculated wood using molecular and analytical chemistry techniques was investigated. Read More

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Upgrading Recycled Polypropylene from Textile Wastes in Wood Plastic Composites with Short Hemp Fiber.

Polymers (Basel) 2021 Apr 12;13(8). Epub 2021 Apr 12.

Technological Institute of Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain.

This research reports the manufacturing and characterization of green composites made from recycled polypropylene obtained from the remnants of polypropylene non-woven fabrics used in the textile industry and further reinforced with short hemp fibers (SHFs). To improve the interaction of the reinforcing fibers with the recycled polymeric matrix, two types of compatibilizing agents (maleic anhydride grafted, PP-g-MA, and maleinized linseed oil, MLO) were added during melt-processing, the percentage of which had to remain constant concerning the amount of fiber loading to ensure complete reactivity. Standardized test specimens were obtained by injection molding. Read More

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Effect of Sanding and Plasma Treatment of 3D-Printed Parts on Bonding to Wood with PVAc Adhesive.

Polymers (Basel) 2021 Apr 9;13(8). Epub 2021 Apr 9.

Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.

Additive manufacturing is becoming increasingly important for manufacturing end products, not just prototyping. However, the size of 3D-printed products is limited due to available printer sizes and other technological limitations. For example, making furniture from 3D-printed parts and wooden elements requires adequate adhesive joints. Read More

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Prevalence and Predictors of Per- and Polyfluoroalkyl Substances (PFAS) Serum Levels among Members of a Suburban US Volunteer Fire Department.

Int J Environ Res Public Health 2021 Apr 2;18(7). Epub 2021 Apr 2.

Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ 85724, USA.

Background: Per-and polyfluoroalkyl substances (PFAS), are ubiquitous pollutants associated with adverse health outcomes. High PFAS levels have been demonstrated among career firefighters; less is known about PFAS levels among volunteer firefighters who comprise two-thirds of US firefighters.

Methods: Volunteer fire department members completed a survey and provided blood samples. Read More

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Evaluation of Different Test-Day Milk Recording Protocols by Wood's Model Application for the Estimation of Dairy Goat Milk and Milk Constituent Yield.

Animals (Basel) 2021 Apr 8;11(4). Epub 2021 Apr 8.

Department of Veterinary Medicine and Animal Production (DMVPA), University of Naples Federico II, 80137 Naples, Italy.

Goats have important social and economic roles in many countries because of their ability to survive and be productive in marginal areas. The overarching aim of this study was to compare the application of Wood's model to different test-day milk recording protocols for estimation of total milk, fat, and protein yield in dairy goats. A total of 465 goats were used (Garganica, 78; Girgentana, 81; Jonica, 76; Maltese, 77; Red Mediterranean, 76; Saanen, 77). Read More

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Polytetrafluoroethylene Films in Rigid Polyurethane Foams' Dielectric Permittivity Measurements with a One-Side Access Capacitive Sensor.

Polymers (Basel) 2021 Apr 6;13(7). Epub 2021 Apr 6.

Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, P.Valdena street 3/7, LV-1048 Riga, Latvia.

As a non-metallic composite material, widely applied in industry, rigid polyurethane (PUR) foams require knowledge of their dielectric properties. In experimental determination of PUR foams' dielectric properties protection of one-side capacitive sensor's active area from adverse effects caused by the PUR foams' test objects has to be ensured. In the given study, the impact of polytetrafluoroethylene (PTFE) films, thickness 0. Read More

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Pore Development during the Carbonization Process of Lignin Microparticles Investigated by Small Angle X-ray Scattering.

Molecules 2021 Apr 6;26(7). Epub 2021 Apr 6.

Department of Materials Science and Process Engineering, BOKU-University of Natural Resources and Life Science, A-1190 Vienna, Austria.

Application of low-cost carbon black from lignin highly depends on the materials properties, which might by determined by raw material and processing conditions. Four different technical lignins were subjected to thermostabilization followed by stepwise heat treatment up to a temperature of 2000 °C in order to obtain micro-sized carbon particles. The development of the pore structure, graphitization and inner surfaces were investigated by X-ray scattering complemented by scanning electron microscopy and FTIR spectroscopy. Read More

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Associations of Baseline Frailty Status and Age With Outcomes in Patients Undergoing Vestibular Schwannoma Resection.

JAMA Otolaryngol Head Neck Surg 2021 Apr 29. Epub 2021 Apr 29.

Department of Neurosurgery, University of New Mexico School of Medicine, Albuquerque.

Importance: Although numerous studies have evaluated the influence of advanced age on surgical outcomes following vestibular schwannoma (VS) resection, few if any large-scale investigations have assessed the comparative prognostic effects of age and frailty. As the population continues to age, it is imperative to further evaluate treatment and management strategies for older patients.

Objective: To conduct a population-based evaluation of the independent associations of chronological age and frailty (physiological age) with outcomes following VS resection. Read More

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Two Isolates Obtained From a Fatal Necrotizing Fasciitis Infection Display Distinct Genomic and Phenotypic Characteristics in Comparison to Type Strains.

Front Cell Infect Microbiol 2021 12;11:635673. Epub 2021 Apr 12.

Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, Greenville, SC, United States.

has been recognized as a critical pathogen that causes severe infections worldwide not only because of the emergence of extensively drug-resistant (XDR) derivatives, but also because of its ability to persist in medical environments and colonize compromised patients. While there are numerous reports describing the mechanisms by which this pathogen acquires resistance genes, little is known regarding 's virulence functions associated with rare manifestations of infection such as necrotizing fasciitis, making the determination and implementation of alternative therapeutic targets problematic. To address this knowledge gap, this report describes the analysis of the NFAb-1 and NFAb-2 XDR isolates, which were obtained at two time points during a fatal case of necrotizing fasciitis, at the genomic and functional levels. Read More

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Impacts of radiation exposure on the bacterial and fungal microbiome of small mammals in the Chernobyl Exclusion Zone.

J Anim Ecol 2021 Apr 26. Epub 2021 Apr 26.

School of Science, Engineering and Environment, University of Salford, UK.

Environmental impacts of the 1986 Chernobyl Nuclear Power Plant accident are much debated, but the effects of radiation on host microbiomes have received little attention to date. We present the first analysis of small mammal gut microbiome from the Chernobyl Exclusion Zone in relation to total absorbed dose rate and including caecum as well as faeces sample. We provide novel evidence that host species determines fungal community composition, and that associations between microbiome (both bacterial and fungal) communities and radiation exposure varies between host species. Read More

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A modular microscopic smartphone attachment for imaging and quantification of multiple fluorescent probes using machine learning.

Analyst 2021 Apr;146(8):2531-2541

Department of Electrical and Computer Engineering, School of Engineering, Rutgers The State University of New Jersey, Piscataway, NJ, USA. and Global Health Institute, Rutgers The State University of New Jersey, New Brunswick, NJ, USA.

Portable smartphone-based fluorescent microscopes are becoming popular owing to their ability to provide major functionalities offered by regular benchtop microscopes at a fraction of the cost. However, smartphone-based microscopes are still limited to a single fluorophore, fixed magnification, the inability to work with a different smartphones, and limited usability to either glass slides or cover slips. To overcome these challenges, here we present a modular smartphone-based microscopic attachment. Read More

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Early Rearing Conditions Affect Monoamine Metabolite Levels During Baseline and Periods of Social Separation Stress: A Non-human Primate Model ().

Front Hum Neurosci 2021 9;15:624676. Epub 2021 Apr 9.

Department of Psychology, Brigham Young University, Provo, UT, United States.

A variety of studies show that parental absence early in life leads to deleterious effects on the developing CNS. This is thought to be largely because evolutionary-dependent stimuli are necessary for the appropriate postnatal development of the young brain, an effect sometimes termed the "experience-expectant brain," with parents providing the necessary input for normative synaptic connections to develop and appropriate neuronal survival to occur. Principal among CNS systems affected by parental input are the monoamine systems. Read More

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Data on physical and chemical characterization of wood combustion products derived at cogeneration power plants.

Data Brief 2021 Jun 23;36:106994. Epub 2021 Mar 23.

Department of Physical Chemistry, University of Latvia, Jelgavas Street 1, Riga LV-1004, Latvia.

The data presented in this article are related to the research paper "Granulation of fly ash and biochar with organic lake sediments - A way to sustainable utilization of waste from bioenergy production" [1] in the context of waste material investigation and possible valorization instead of disposal. This article provides a comprehensive chemical and physical characterization of wood combustion products - fly ashes, bottom ashes, mixed ashes and biochar. Multiple analytical techniques and methodology were exploited to investigate the composition of wood combustion products, among them a loss on ignition, potentiometry, colorimetry, X-ray diffractometry, X-ray fluorescence spectrometry, inductively coupled plasma optical emission spectrometry, gas chromatography. Read More

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