نتایج جستجو برای: sawdust bamboo
تعداد نتایج: 7236 فیلتر نتایج به سال:
Bamboo is a type of biomass material and has great potential as a bioenergy resource for the future in China. Surface chemical and thermal–mechanical behavior play an important role in the manufacturing process of bamboo composites and pellets. In this study, moso bamboo was treated by sodium hydrate solution and acetic acid solution. Surface chemical and dynamic mechanical properties of bamboo...
Wild edible plants, ecological foodstuffs obtained from forest ecosystems, grow in natural fields, and their productivity depends on their response to harvesting by humans. Addressing exactly how wild edible plants respond to harvesting is critical because this knowledge will provide insights into how to obtain effective and sustainable ecosystem services from these plants. We focused on bamboo...
This paper gives an overview of the occurrence of mite pests (Schizotetranychus nanjingensis Ma & Yuan, Aponychus corpuzae Rimando and Aculus bambusae Kuang) and their damage to the moso bamboo (Phyllostachys pubescens) in Fujian province, China. The effects of mites on the physiology of the plants and their yield are briefly discussed. Possible causes of their outbreaks in bamboo forests are o...
According to GOST 19222-84, the dependence of physical-mechanical characteristics sawdust concrete on specific gravity wet coniferous species and ash-slag mixture in composition was studied. A one-factor experiment carried out laboratory Department Reproduction Processing Forest Resources, Federal State Budgetary Educational Institution Higher Education “Bratsk University” order justify share c...
The recent acquisitions of archaeological findings of bamboo slips inmany institutions inChina provide us a good significance for the study of development of mathematics in Ancient China. These includes the Tsinghua University (arithmetic table, dated from the Warring States period), the YueluAcademy (bamboo slips of the book “mathematics”, QinDynasty), the BeijingUniversity (bamboo slips of ma...
this paper deals with application of polyaniline coated on wood sawdust for removal ofmethylene blue (mb) dye from aqueous solutions. polyaniline coated onto sawdust (termedas pan/sd) was prepared via direct chemical polymerization onto sawdust which waspreviously soaked in the monomer (aniline) solution in acidic (hc1) media. adsorptionexperiments were carried out using batch system. the effec...
Chemical modification of hardwood sawdust from ash-tree species was carried out with a solution of maleic anhydride in acetone. Wood polymers, lignin, and cellulose were isolated from the wood sawdust and modified by the same method. Samples were characterized by Fourier transform infrared spectroscopy (FTIR), providing evidence that maleic anhydride esterifies the free hydroxyl groups of the w...
This laboratory study examined the use of various wood materials as a carbon source in horizontal flow filters to denitrify nitrate-nitrogen (NO3-N) from a synthetic wastewater. The filter materials were: sawdust (Pinus radiata), sawdust and soil, sawdust and sand, and medium-chip wood chippings and sand. Two influent concentrations of NO3-N, 200 mg L(-1) and 60 mg L(-1), loaded at 2.9 to 19.4 ...
This study was conducted to evaluate the calcium (Ca) absorption efficacy of king oyster mushroom (Pleurotus eryngii) grown on sawdust medium supplemented with Ca-sources, including oyster shell powder, and to determine the efficacy of oyster shell powder as a calcium supplement on growth, yield, spawn run and primordial formation of P. eryngii. Optimum calcination of oyster shell powder was ac...
Dynamic viscoelastic properties of bamboo were determined in torsion and bending. Damping, measured by tan δ, in dry bamboo was relatively small, about 0.01 in bending and 0.02 to 0.03 in torsion, with little dependence on frequency in the audio range. In wet bamboo, damping was somewhat greater: 0.012 to 0.015 in bending and 0.03 to 0.04 in torsion. The anisotropy in damping implies a purely c...
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