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Improvements of Fiber Yield and Fiber Fineness by Expressing the iaaM Gene in Cotton Seed Coat 被引量:3
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作者 PEI Yan,ZHENG Xue-lian,ZHANG Mi,ZENG Qi-wei,HOU Lei(Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture of China,Biotechnology Research Center,Southwest University,Chongqing 400716,P.R.China) 《棉花学报》 CSCD 北大核心 2008年第S1期44-,共1页
Cotton,the most important natural fiber crop in the world,is a mainstay in China's economy.However,for over two decades,cotton yields both in China and U.S.have been at a plateau.
关键词 FBP Improvements of fiber Yield and fiber fineness by Expressing the iaaM Gene in Cotton Seed Coat
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Mechanical and physical characterization of sodium hydroxide treated Borassus fruit fibers
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作者 Obi Reddy K Shukla M +1 位作者 Uma Maheswari C Varada Rajulu A 《Journal of Forestry Research》 CAS CSCD 2012年第4期667-674,共8页
In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentra- tions. In eac... In order to improve the properties by chemical modification and to optimize the alkali concentration, we treated Borassus fruit fine fibers with aqueous sodium hydroxide solutions of different concentra- tions. In each case, the tensile properties of the fibers were determined. The morphology of the untreated and alkali treated fibers was observed using scanning electron microscope. The surface of the fibers became rough on alkali treatment. The tensile properties of the fibers improved on alkali treatment. The fibers attained maximum tensile properties when treated with 15% aqueous sodium hydroxide solution and decreased thereafter. The crystallinity index of the fibers showed a similar trend. The thermal stability of the alkali treated fibers was found to be higher than that of untreated fibers. Further, the char content was maximum for fibers treated with alkali having concentration of 15% and above. The chemical composition indicated that the percentageof a-cellulose was maximum when the fibers were treated with 15% aqueous sodium hydroxide solution and then decreased thereafter thus indicating the beginning of degradation of the fibers at higher concentrations. Thus, the optimum concentration of NaOH was established as 15% for alkali treatment of the Borassus fibers. 展开更多
关键词 borassus fruit fine fiber chemical composition MERCERIZATION spectral analysis tensile properties thermal properties.
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Low-cost oriented preparation of ultra fine xonotlite fibers
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作者 NI Wen, CHEN Shuxiang, and ZHU Lin 《Rare Metals》 SCIE EI CAS CSCD 2004年第3期230-230,共1页
Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials... Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive but also difficult to prepare the xonoflite fibers with diameters around 100 nm. In this study, the ultra fine xonotlite fibers with diameters around 100 nm were prepared by an autoclaving method. The preparation was low-cost oriented by using natural powder quartz and lime as the major raw materials. The intergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondary particles. The length of the nanometer-sized xonotlite fibers was around several microns. The fibers and their secondary particles were produced at 216℃ for 6 h with a continuous stirring of 300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconium oxychloride has an enormous effect on the growing habit of xonotlite crystals and plays an important role in controlling the diameter of xonotlite fibers. 展开更多
关键词 LOW-COST ultra fine fibers XONOTLITE ADDITIVE
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Low-cost oriented preparation of ultra fine xonotlite fibers
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作者 WenNi ShuxiangChen LinZhu 《Journal of University of Science and Technology Beijing》 CSCD 2004年第4期315-318,共4页
Nanometer-sized xonotlite fibers have great potential application in manyfields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine andhighly active silica as the major raw materials, ... Nanometer-sized xonotlite fibers have great potential application in manyfields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine andhighly active silica as the major raw materials, which is not only expensive but also difficult toprepare the xonotlite fibers with diameters around 100 nm. In this study, the ultra fine xonotlitefibers with diameters around 100 nm were prepared by an autoclaving method. The preparation waslow-cost oriented by using natural powder quartz and lime as the major raw materials. Theintergrowth of the fibers formed thin shell hollow balls or ellipsoids, namely the secondaryparticles. The length of the nanometer-sized xonotlite fibers was around several microns. The fibersand their secondary particles were produced at 216 deg C for 6 h with a continuous stirring of300-500 r/min. Zirconium oxychloride was used as an additive. The experiments show that zirconiumoxychloride has an enormous effect on the growing habit of xonotlite crystals and plays an importantrole in controlling the diameter of the xonotlite fibers. 展开更多
关键词 LOW-COST ultra fine fibers XONOTLITE ADDITIVE
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Preliminary research on movement regularity of fine carbon fiber powder injected into intracrania of mice
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《Chinese Journal of Biomedical Engineering(English Edition)》 2001年第3期133-134,共2页
关键词 Preliminary research on movement regularity of fine carbon fiber powder injected into intracrania of mice
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Report on Screening Test of Dazhou Superior Ramie Germplasm Resources 被引量:1
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作者 Yaling LI Zhonggang CUI +4 位作者 Yun GOU Zhaoxia TANG Yan YANG Wenmei WU Zhonghua ZHANG 《Asian Agricultural Research》 2020年第6期39-42,共4页
[Objectives]To promote the development of the ramie industry in Dazhou City of Sichuan Province and provide a material basis for the breeding of new ramie varieties.[Methods]The Institute of Bast Fiber Crops of Dazhou... [Objectives]To promote the development of the ramie industry in Dazhou City of Sichuan Province and provide a material basis for the breeding of new ramie varieties.[Methods]The Institute of Bast Fiber Crops of Dazhou Academy of Agricultural Sciences performed a screening test of excellent ramie germplasm resources from 2017 to 2019 to compare the growth,resistance,raw fiber yield and fiber fineness of the experimental materials.[Results]All the experimental materials showed strong growth potential,drought resistance and disease resistance.There were 8 kinds of resources with a fiber fineness greater than 2000 m/g,of which 3 kinds of resource materials had a fiber fineness greater than 2300 m/g;12 kinds of resources has the raw fiber yield exceeding the control and 10 kinds of resources had the raw fiber yield≥2000 kg/ha;3 kinds of resources met the requirements of the high-yield and high-quality indicators(fiber fineness exceeding 2000 m/g and raw fiber yield≥2000 kg/ha),they were BD0718,BD1614 and BYL2.[Conclusions]These high-quality ramie resources can provide a rich resource base for the breeding of new ramie varieties. 展开更多
关键词 RAMIE Germplasm resources Growth potential RESISTANCE Raw fiber yield fiber fineness
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