6,994 results match your criteria natural wood


Efficient conversion of hemicellulose sugars from spent sulfite liquor into optically pure L-lactic acid by Enterococcus mundtii.

Bioresour Technol 2021 Apr 27;333:125215. Epub 2021 Apr 27.

Institute of Microbiology and Microbial Biotechnology, Department of Biotechnology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190 Vienna, Austria. Electronic address:

Spent sulfite liquor (SSL), a waste stream from wood pulp production, has great potential as carbon source for future industrial fermentations. In the present study, SSL was separated into a hemicellulose derived sugar syrup (HDSS) and a lignosulfonic fraction by simulated moving bed chromatography. The recovery of SSL sugars in the HDSS was 89% and the fermentation inhibitors furfural, 5-hydroxymethylfurfural and acetic acid were removed by 98. Read More

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Gene Flow Increases Phylogenetic Structure and Inflates Cryptic Species Estimations: A Case Study on Widespread Philippine Puddle Frogs (Occidozyga laevis).

Syst Biol 2021 May 8. Epub 2021 May 8.

Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA.

In cryptic amphibian complexes, there is a growing trend to equate high levels of genetic structure with hidden cryptic species diversity. Typically, phylogenetic structure and distance-based approaches are used to demonstrate the distinctness of clades and justify the recognition of new cryptic species. However, this approach does not account for gene flow, spatial, and environmental processes that can obfuscate phylogenetic inference and bias species delimitation. Read More

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Sympatric cases of squirrelpox in red and grey squirrels.

Vet Rec 2021 May;188(9):358

APHA Shrewsbury, Veterinary Investigation Centre, Harlescott, Shrewsbury, Shropshire, SY1 4HD.

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Ear morphology in two root-rat species (genus Tachyoryctes) differing in the degree of fossoriality.

J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2021 May 6. Epub 2021 May 6.

Department of Zoology, Faculty of Science, University of South Bohemia, Branišovská, 1760, 37005, České Budějovice, Czech Republic.

It is supposed that the subterranean lifestyle in mammals is reflected in ear morphology and tuning of hearing to low frequencies. We studied two root-rat species to see if their ear morphology reflects the difference in the amount of their surface activity. Whereas the more subterranean Tachyoryctes splendens possesses shorter pinnae as expected, it has smaller bullae compared to the more epigeic Tachyoryctes macrocephalus. Read More

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Insight into the function and evolution of the Wood-Ljungdahl pathway in Actinobacteria.

ISME J 2021 May 5. Epub 2021 May 5.

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, PR China.

Carbon fixation by chemoautotrophic microbes such as homoacetogens had a major impact on the transition from the inorganic to the organic world. Recent reports have shown the presence of genes for key enzymes associated with the Wood-Ljungdahl pathway (WLP) in the phylum Actinobacteria, which adds to the diversity of potential autotrophs. Here, we compiled 42 actinobacterial metagenome-assembled genomes (MAGs) from new and existing metagenomic datasets and propose three novel classes, Ca. Read More

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Rapid Parallel Adaptation to Anthropogenic Heavy Metal Pollution.

Mol Biol Evol 2021 May 5. Epub 2021 May 5.

Biosciences, University of Exeter, Stocker Road, Exeter EX4 4PY, UK.

The impact of human-mediated environmental change on the evolutionary trajectories of wild organisms is poorly understood. In particular, species' capacities to adapt rapidly (in hundreds of generations or less), reproducibly and predictably to extreme environmental change is unclear. Silene uniflora is predominantly a coastal species, but it has also colonised isolated, disused mines with phytotoxic, zinc-contaminated soils. Read More

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Association of Structural Magnetic Resonance Imaging Measures With Psychosis Onset in Individuals at Clinical High Risk for Developing Psychosis: An ENIGMA Working Group Mega-analysis.

JAMA Psychiatry 2021 May 5. Epub 2021 May 5.

Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York.

Importance: The ENIGMA clinical high risk (CHR) for psychosis initiative, the largest pooled neuroimaging sample of individuals at CHR to date, aims to discover robust neurobiological markers of psychosis risk.

Objective: To investigate baseline structural neuroimaging differences between individuals at CHR and healthy controls as well as between participants at CHR who later developed a psychotic disorder (CHR-PS+) and those who did not (CHR-PS-).

Design, Setting, And Participants: In this case-control study, baseline T1-weighted magnetic resonance imaging (MRI) data were pooled from 31 international sites participating in the ENIGMA Clinical High Risk for Psychosis Working Group. Read More

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A self-healing, recyclable, and degradable fire-retardant gelatin-based biogel coating for green buildings.

Soft Matter 2021 May 5. Epub 2021 May 5.

Institute of Safety Science and Engineering, School of Mechanical and Automotive Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P. R. China. and Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Wushan Road 381, Guangzhou, 510641, P. R. China.

Wood is one of the oldest building materials and commonly employed in construction. However, the inherent fire hazard of wood restricts its practical application. Application of fire retardant coatings has been proved to be a highly efficient method for improving the fire retardancy of structural materials during combustion. Read More

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Initial forest age distribution may generate computational sinks or sources of carbon: A generic approach to test assumptions underlying the EU LULUCF forest reference levels.

Carbon Balance Manag 2021 May 4;16(1):13. Epub 2021 May 4.

Natural Resources Institute Finland (Luke), Yliopistokatu 6 B, 80101, Joensuu, Finland.

Background: The current EU LULUCF regulation calls for member state-specific Forest Reference Levels (FRLs) for benchmark in the accounting of greenhouse gas emissions and removals of managed forest land during the compliance period (2021-2030). According to the technical guidance on developing and reporting the FRLs, it could be actualized by projecting a ratio of harvested to total available biomass. We tested how the initial age distribution may affect the aforementioned ratio by simulating the continuation of forest management based on several descriptive shapes of forest age class distribution. Read More

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Unique reactivity of nanoporous cellulosic materials mediated by surface-confined water.

Nat Commun 2021 05 4;12(1):2513. Epub 2021 May 4.

Department of Chemistry, Institute of Chemistry for Renewable Resources, University of Natural Resources and Life Sciences Vienna (BOKU), Tulln, Austria.

The remarkable efficiency of chemical reactions is the result of biological evolution, often involving confined water. Meanwhile, developments of bio-inspired systems, which exploit the potential of such water, have been so far rather complex and cumbersome. Here we show that surface-confined water, inherently present in widely abundant and renewable cellulosic fibres can be utilised as nanomedium to endow a singular chemical reactivity. Read More

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Identification of the Optimal Season and Spectral Regions for Shrub Cover Estimation in Grasslands.

Sensors (Basel) 2021 Apr 29;21(9). Epub 2021 Apr 29.

Department of Geography and Planning, University of Saskatchewan, 117 Science Place, Saskatoon, SK S7N 5C8, Canada.

Woody plant encroachment (WPE), the expansion of native and non-native trees and shrubs into grasslands, is a less studied factor that leads to declines in grassland ecosystem health. With the increasing application of remote sensing in grassland monitoring and measuring, it is still difficult to detect WPE at its early stages when its spectral signals are not strong enough. Even at late stages, woody species have strong vegetation characteristics that are commonly categorized as healthy ecosystems. Read More

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Mechanical Properties, Wettability and Thermal Degradation of HDPE/Birch Fiber Composite.

Polymers (Basel) 2021 Apr 30;13(9). Epub 2021 Apr 30.

Centre de Recherche sur les Matériaux Lignocellulosiques, Université du Québec à Trois-Rivières, Boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada.

Wood-plastic composites have emerged and represent an alternative to conventional composites reinforced with synthetic carbon fiber or glass fiber-polymer. A wide variety of wood fibers are used in WPCs including birch fiber. Birch is a common hardwood tree that grows in cool areas such as the province of Quebec, Canada. Read More

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Conductive Biomass Films Containing Graphene Oxide and Cationic Cellulose Nanofibers for Electric-Heating Applications.

Nanomaterials (Basel) 2021 Apr 30;11(5). Epub 2021 Apr 30.

Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.

A low-voltage biomass matrix and flexible electric-heating composite with graphene oxide (GO) and cationic cellulose nanofiber (CCNF) were fabricated by ultrasonic dispersion and suction filtration. The main results show that the tensile strength and strain of the films decreased with an increase in the GO content, but the thermal stability increased. The GO/CCNF film underwent rapid thermal decomposition at 250-350 °C, and the maximum degradation temperature was higher by 19 °C compared to that of the pure CCNF film. 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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A case report of cervicothoracic penetrating injury with retention of foreign body.

BMC Surg 2021 May 3;21(1):232. Epub 2021 May 3.

Departments of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jining Medical University, Jining, 272029, Shandong, China.

Background: Cervicothoracic penetrating injury, considered to be relatively rare, has a complicated mechanism that is difficult to treat. In this report, a special case of cervicothoracic injury caused by foreign body penetration was elucidated. In this case, the injury location and the involved foreign body were exceptionally particular, which induced a challenging process of diagnosis and treatment. Read More

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Untargeted LC-HRMS profiling followed by targeted fractionation to discover new taste-active compounds in spirits.

Food Chem 2021 Apr 20;359:129825. Epub 2021 Apr 20.

Univ. Bordeaux, Unité de Recherche Œnologie, EA 4577, USC 1366 INRA, ISVV, 33882 Villenave d'Ornon Cedex, France. Electronic address:

Taste is a key driver of food and beverage acceptability due to its role in consumers' pleasure. The great interest that natural food and beverages now arouse lies notably in the complexity of their taste, which in turn is related to a wide range of taste-active compounds. Going beyond the classic divide between targeted and untargeted strategies, an integrative methodology to spirits was applied. 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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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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Anisotropic Evaporator with a T-Shape Design for High-Performance Solar-Driven Zero-Liquid Discharge.

Small 2021 May 3:e2100969. Epub 2021 May 3.

State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, 730000, China.

Solar-driven evaporation is regarded as a sustainable wastewater treatment strategy for clean water recovery and salt condensation. However, achieving both high evaporation rate and long-term stability remain challenging due to poor thermal management and rapid salt accumulation and blocking. Here, a T-shape solar-driven evaporator, composed of a surface-carbonized longitudinal wood membrane (C-L-wood) is demonstrated as the top "" for solar harvesting/vapor generation/salt collection and another piece of natural L-wood as the support "" for brine transporting and thermally insulating. Read More

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The Dual Epidemics of 2020: Nursing Leaders' Reflections in the Context of Whole Person/Whole Systems.

Nurs Adm Q 2021 Apr 29. Epub 2021 Apr 29.

Rutgers Cancer Institute of New Jersey & RWJBH Oncology Services, and Rutgers School of Nursing, New Brunswick, New Jersey (Dr Hayes); Boston Children's Hospital, Boston, Massachusetts (Dr Wood); Boston Medical Center, Boston, Massachusetts (Dr Gaden); William F. Connell School of Nursing, Boston College, Chestnut Hill, Massachusetts (Dr Gennaro); Dana-Farber Cancer Institute, Boston, Massachusetts (Dr Gross); Tufts Medical Center and Tufts Children's Hospital, and Tufts Medical School, Boston, Massachusetts (Ms Hudson-Jinks); Brigham and Women's Faulkner Hospital, Boston, Massachusetts (Ms Loescher); Beth Israel Deaconess Medical Center, Boston, Massachusetts (Dr Maurer); Mittelman Family Foundation, Boston, Massachusetts (Ms Mittelman); Brigham and Women's Hospital, Boston, Massachusetts (Dr Pearson); College of Natural, Behavioral, and Health Sciences, Simmons University, Boston, Massachusetts (Dr Sharp-McHenry); College of Nursing and Health Sciences, University of Massachusetts Boston, Boston (Dr Thompson); and School of Nursing, Bouve College of Health Sciences, Northeastern University, Boston, Massachusetts (Dr Van Pelt).

The Greater Boston Nursing Collective, a consortium composed of university nursing deans and chief nursing officers within academic medical centers and specialty hospitals in Boston, Massachusetts, was formed in 2014. Since the group's inception, our mission has been to create and reinforce whole-person/whole-system healing environments to improve the health of all communities. Through our collaboration in navigating the dual epidemics of COVID-19 and structural racism within our respective organizations, and across the United States and the world, we share experiences and lessons learned. Read More

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Transcriptomic and epigenomic remodeling occurs during vascular cambium periodicity in Populus tomentosa.

Hortic Res 2021 May 1;8(1):102. Epub 2021 May 1.

Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China.

Trees in temperate regions exhibit evident seasonal patterns, which play vital roles in their growth and development. The activity of cambial stem cells is the basis for regulating the quantity and quality of wood, which has received considerable attention. However, the underlying mechanisms of these processes have not been fully elucidated. 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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Streamlined Multimodal DESI and MALDI Mass Spectrometry Imaging on a Singular Dual-Source FT-ICR Mass Spectrometer.

Metabolites 2021 Apr 20;11(4). Epub 2021 Apr 20.

Department of Chemistry, Natural Sciences Complex, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.

The study of biological specimens by mass spectrometry imaging (MSI) has had a profound influence in the various forms of spatial-omics over the past two decades including applications for the identification of clinical biomarker analysis; the metabolic fingerprinting of disease states; treatment with therapeutics; and the profiling of lipids, peptides and proteins. No singular approach is able to globally map all biomolecular classes simultaneously. This led to the development of many complementary multimodal imaging approaches to solve analytical problems: fusing multiple ionization techniques, imaging microscopy or spectroscopy, or local extractions into robust multimodal imaging methods. Read More

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The Impact of Pine Wood Nematode Infection on the Host Fungal Community.

Microorganisms 2021 Apr 22;9(5). Epub 2021 Apr 22.

Collaborative Innovation Center of Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.

Pine wilt disease (PWD), caused by pinewood nematode (PWN) , is globally one of the most destructive diseases of pine forests, especially in China. However, little is known about the effect of PWD on the host microbiome. In this study, the fungal community and functional structures in the needles, roots, and soil of and around naturally infected by PWN were investigated by using high-throughput sequencing coupled with the functional prediction (FUNGuild). Read More

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Volatile Constituents of Endophytic Fungi Isolated from with Descriptions of Two New Species of .

Life (Basel) 2021 Apr 19;11(4). Epub 2021 Apr 19.

Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.

Algae, bacteria, and fungi, as well as higher plants, produce a wide variety of secondary metabolites known as natural products. Natural products are well known as remarkable sources of many therapeutic agents. The genus is a wood-decaying fungus that belongs to family Xylariaceae. 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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Study on Extraction Process of Root of Henry Wood Betony Polysaccharides and Their Antitumor Activity against S180.

Authors:
Haibo Feng Lan Tian

Molecules 2021 Apr 19;26(8). Epub 2021 Apr 19.

Department of Veterinary Medicine, Southwest University, Chongqing 402460, China.

We optimized the hot water extraction of polysaccharides from the root of Henry wood betony (RHWPs) using a uniform test and explored their anti-tumor activities in vitro and in vivo. The optimal extraction conditions were as follows: 40 min extraction time, liquid/solid ratio 30 mL/g, 100 min soaking time, two extraction cycles, 100% ethanol concentration, and extraction temperature of 80 °C. The molecular weight distribution of RHWPs with MWs was 228,600 g/mol and 5001 g/mol. Read More

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The Tuning of LIPSS Wettability during Laser Machining and through Post-Processing.

Nanomaterials (Basel) 2021 Apr 10;11(4). Epub 2021 Apr 10.

Department of Chemical Engineering, McGill University, Montréal, QC H3A 0C5, Canada.

In this work, we investigate the fabrication of stainless-steel substrates decorated with laser-induced periodic surface structures (LIPSS) of both hydrophilic and hydrophobic wettability through different post-processing manipulation. In carrying out these experiments, we have found that while a CO-rich atmosphere during irradiation does not affect final wettability, residence in such an atmosphere after irradiation does indeed increase hydrophobicity. Contrarily, residence in a boiling water bath will instead lead to a hydrophilic surface. Read More

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