No abstract available.
Abscess ; Enterobacteriaceae* ; Wood*

No abstract available.
Abscess ; Enterobacteriaceae* ; Wood*

Most known species in the Physalacriaceae are saprotrophs that grow on decaying leaves and wood, and approximately 21 genera in the Physalacriaceae have been reported worldwide. During an ongoing survey of indigenous fungi in Korea, four specimens belonging to the Physalacriaceae were collected on Ulleung Island. These specimens were identified as three species based on morphological characteristics and molecular analysis of rDNA-internal transcribed spacer sequences. Three species in three genera were shown to be new records in Korea: Hymenopellis orientalis, Paraxerula hongoi, and Ponticulomyces orientalis. The latter two are the first records of these genera in Korea. In this study, we provide detailed morphological descriptions of these species and describe their phylogenetic position within the Physalacriaceae.
Fungi ; Korea* ; Wood

Objective: In order to understand the dust concentration in the workplace of dust exposure enterprises in Shenxian. To evaluate the degree of occupational hazard factors of dust exposure enterprises. And provide basis for the formulation of occupational protection standards and management system of dust exposure enterprises. Methods: In February 2022, the dust concentration monitoring data of 89 dust exposure enterprises from 2017 to 2020 by the Shenxian Center for Disease Control and Prevention were collected, and the qualified rates of dust concentration detection of dust exposure enterprises in different years, dust types and enterprise sizes were analyzed. Results: A total of 89 dust enterprises were monitored from 2017 to 2020, 2132 dust samples were collected, and 1818 qualified samples were taken, with a total qualified rate of 85.3%. From 2017 to 2020, the dust detection qualified rates showed a year-by-year increase trend, 78.7% (447/568), 84.1% (471/560), 88.6% (418/472) and 90.6% (482/532), respectively, with statistically significant differences (χ(2)=36.27, P=0.003). The differences in the qualified rates of dust detection samples of silicon dust (66.1%, 41/62), grain dust (86.7%, 1549/1786), cotton dust (84.1%, 106/126) and wood dust (77.2%, 122/158) were statistically significant (χ(2)=29.66, P=0.002). The qualified rate of dust samples in large and medium-sized enterprises (95.1%, 1194/1256) was higher than that of small-sized enterprises (71.2%, 624/876), and the difference was statistically significant (χ(2)=1584.40, P=0.001) . Conclusion: The qualified rate of dust concentration monitoring results of dust exposure enterprises in Shenxian showed an increase trend year by year, while the pualified rate of dust concentration monitoring in small-sized enterprises was low, and the occupational hazard of silica dust was still severe.
Dust ; Silicon ; Wood ; Workplace

Dissolving pulp consists of high purity cellulose and is widely used to as raw materials for the production of regenerated cellulose fiber, cellulose ester and cellulose ether. The characteristic of dissolving pulp affects greatly the production and processing performance of subsequent products. The α-cellulose content, hemicellulose content, pulp viscosity, ash, transition metal ion content, fiber morphology, molecular weight distribution of cellulose and the reactivity are the important properties. Because of its green, mild and high efficiency, the application of enzymes in improving the properties of dissolving pulp has a promising application prospect and has been researched significantly. In this review, the main properties of dissolving pulp are presented first, followed by a recommendation of the enzymes to improve these properties. The application and current research of cellulase and xylanase in improving the properties of dissolving pulp are emphasized. The main problems and the future research areas in improving the properties of dissolving pulp by enzymes are revealed. Finally, the technology prospects in this field are proposed.
Cellulase ; Molecular Weight ; Viscosity ; Wood

Computed tomography revealed variable sized small areas of extremely low attenuation in the right orbit of a45-year-old woman who had fallen face down. The appearance and attenuation of the areas suggested air, but on widewindow-width images attenuation was seen to be higher than that of sinus air. We report a case involvingintraorbital wood foreign bodies which on CT mimicked the appearance of air and which were surgically removed.
Female ; Foreign Bodies* ; Humans ; Orbit ; Wood*

Dermatophytes invade and destroy keratinized tissues of the skin, hairs and nails by keratinase. They are classified in 3 anamorphic genera, Epidermophyton, Microspoorum and Trichophyon, depending on their macroconidial characteristics. They have characteristic morphology of macroconidia and microconidia, and arrangement of microconidia. Dermatophytes can be divided into 3 groups, anthropophilic, zoophilic and geophilic, depending on their natural habits. By hair invasion behaviors, they can be divided into endothrix and ectothrix, and have different patters under Wood lamp illumiantion. Growth characteristics of fungi are important on identification. Important features of fungal colonies are growth rate at 25 ~30, color, topography, texture and pattern of colony folding. Nine species of dermatophytes have been identified in Korea and their chatracteristics were reviewed.
Arthrodermataceae* ; Epidermophyton ; Fungi ; Hair ; Korea ; Skin ; Wood

The investigation was performed on employees and workers who contact with chemicals at 9 institutions using various substances in the process of production of paint, rubber, shoe and wood articles in Ha Noi, Hai Phong and Da Nang. Results showed that the current regulations were not complied preserve and use of chemical substance, without emergency equipments available for working staff and environment. A high rate of workers had not been educate on chemical safety and a high rate of work place and facilities had not guideline for using chemical substances.
Chemistry/manpower ; Paint ; Rubber ; Shoes ; Wood

During the investigation of Korean indigenous fungi from Seoul, three genera-Fuscoporia, Porostereum, and Trametopsis, and four species-Fuscoporia senex, Phlebia acerina, Porostereum spadiceum, and Trametopsis cervina were found. Their morphological characteristics were examined and their identification was confirmed by molecular analysis based on internal transcribed spacer (ITS) and nuclear large subunit ribosomal DNA region sequences. These fungi are new to Korea and registered here with descriptions.
Basidiomycota ; DNA, Ribosomal ; Fungi ; Korea ; Wood

The section of Annulata under genus Hypoxylon is a member of the Xylariaceae which has ascomata with ostioles papillate ill a flattened disc. The isolates of Hypoxylon collected from the Tropic to the Temperate are compared with similar taxa and described. These isolations under Annulata section are illustrated with a light microscopy and a scanning electron microscopy. Hypoxylon archeri is newly recorded from Korea. A key to the species is also included.
Fungi* ; Korea ; Microscopy ; Microscopy, Electron, Scanning ; Wood*