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Search Results: 1 - 10 of 101693 matches for " 赵银瓶 "
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Isolation, identification and enzyme characterization of a thermophilic cellulolytic anaerobic bacterium
嗜热厌氧纤维素分解菌的分离、鉴定及其酶学特性

Yinping Zhao,Shichun M,Yingjie Sun,Yan Huang,Yu Deng,
,马诗淳,孙颖杰,黄艳,邓宇

微生物学报 , 2012,
Abstract: Objective] To identify a thermophilic bacterium from horse manure to degrade cellulose efficiently,and to enrich microbial resources producing cellulolytic ethanol by co-culturing with thermophilic ethanol producing bacterium.Methods] We used Hungate anaerobic technique to isolate a strain named as HCp from horse manure mixed culture;its phylogeny was identified through 16S rDNA sequencing.Enzymatic assays were determined using DNS method.Results] The isolated HCp cells were straight with rods size of(0.35-0.50)μm ×(2.42-6.40)μm,in the form of single or paring.This strain belongs to a strictly anaerobic Gram-negative bacterium,it is able to form spores,shows motile ability and resistance to neomycin.The strain could degrade filter paper cellulose,cellulose powder,microcrystalline cellulose,cotton wool,rice straw and gelatin,and it was also able to utilize abundant saccharides as substrates such as cellobiose,glucose,xylose,xylan,raffinose,maltose,sorbose,fructose and galactose.The growth pH ranges from 6.5 to 8.5,temperature from 35 to 70℃ and concentration of NaCl on cellulose from 0% to 1.0%,while the optima of pH6.85,60℃ and 0.2% NaCl.Under the optimal growth conditions,the filter paper cellulose degradation rate was up to 90.40% after 10 days.The optimum temperatures for FPA,CMCase,β-glucosidase and xylanase were 70℃,70℃,70℃,and 60℃ respectively.CMCase activity was found with high thermal stability.The phylogenetic analysis based on partial 16S rDNA revealed that HCp was close to Acetivibrio cellulolyticus and A.cellulosolvens with 97.5% sequence similarities.Conclusion] Strain HCp is thermophilic,efficiently cellulolytic anaerobe.It is able to utilize vast substrates and produce highly thermostable enzymes.It is a potential bacterium that can be used for cellulolytic ethanol production.
血叶酸、同型半胱氨酸及尿酸水平与妊娠期高血压疾病发病的相关性分析

戴岭,,佘广彤,王慧艳
- , 2017,
Abstract: 目的 探讨血清叶酸、同型半胱氨酸(Hcy)和尿酸(UA)水平与妊娠期高血压疾病的关系。方法?选择重度子痫前期患者135例及孕周匹配的正常妊娠孕妇135例作为对照组,采用化学发光法测定血清叶酸水平,全自动生化仪测定同型半胱氨酸、尿酸水平。结果?妊娠28~41周+6,重度子痫前期组血清叶酸、同型半胱氨酸及尿酸水平分别为(8.66±5.63μg/L)、(10.85±5.52)μmol/L和(401.42±88.84)μmol/L,均高于对照组(11.33±6.76μg/L)、(9.22±4.19)μmol/L和(309.56±90.10)μmol/L(P<0.05)。其中妊娠28~33周+6重度子痫前期患者血清同型半胱氨酸、尿酸水平均高于对照组(P<0.05);妊娠34~36周+6重度子痫前期组血清叶酸水平低于对照组;妊娠37~41周+6重度子痫前期组与对照组比较,仅血清尿酸水平高于对照组(P<0.05)。结论?血清叶酸、同型半胱氨酸和尿酸水平与重度子痫前期密切相关。
行政复议和解制度探讨

法学家 , 2007,
Abstract: 《行政复议法实施条例》以行政法规的形式确立了行政复议和解制度,回应了建立多元化行政争议解决机制的实践需要,在一定程度上解决了实践与制度供给之间的矛盾。由于该制度本身的不完善及相关的行政程序法、行政诉讼法存在相应的制度障碍,注定该制度在理论上会受到诸多质疑,在运行中会出现许多问题,但是这一制度实践也必将为行政程序法的制定与行政复议法、行政诉讼法的修改提供诸多经验。本文以构建统一的行政和解制度为出发点,在对我国现行行政法律规范进行解读的基础上,分析了行政复议和解的适法性、行政复议和解的标的、行政复议和解的成立要件以及行政复议和解的法律效力,以期引发对该制度的进一步探讨。
行政过程中的民事纠纷解决机制研究

法学家 , 2009,
Abstract:
基于KPCA和FCM的HJ-1A星遥感数据分类
白杨,
国土资源遥感 , 2013, DOI: 10.6046/gtzyyg.2013.01.13
Abstract: 为提高对环境与灾害监测预报小卫星1A(HJ-1A)星遥感数据分类的精度,首先将HJ-1A星HSI高光谱数据和CCD多光谱数据进行GS(Gram-Schmidt)融合,然后利用主成分分析法(principalcomponentanalysis,PCA)和核主成分分析法(kernelPCA,KPCA)分别对融合后的高光谱图像进行降维处理。KPCA降维时采用高斯、线性和多项式3种核函数,根据特征提取效果评价结果,选择累积贡献率较大的多项式核函数。最后,分别对融合后的高光谱图像、PCA主成分图像和基于多项式核函数的KPCA主成分图像进行模糊C均值分类。实验结果表明,KPCA对融合后高光谱图像的特征提取得到了较好的效果,同时提高了分类精度和效率。
针对私人部门研发投资的税制激励问题探讨
,张华
科技进步与对策 , 2004,
Abstract: 鉴于研发投资在提升核心竞争力方面的决定性作用,众多国家或地区开始关注税制激励在促进研发投资中的地位。首先考察了税制激励措施的性质,接着分析了影响税制激励措施设计的因素,之后考察了判别税制激励力度的B指数值,最后对税制激励措施进行了成本效益分析。私人部门研发投资税制激励
新产品开发的新思维

科技进步与对策 , 2004,
Abstract: 从新产品开发策略定位、新产品开发组织结构安排和新产品开发流程管理3个层次讨论了产品开发的成功之道。新产品开发策略定位组织结构流程管理
枯草芽孢杆菌3610ClpQY 基因缺失突变株的 构建及其功能

东北林业大学学报 , 2015,
Abstract:
净举力错后求实际升速的方法

气象 , 1975, DOI: 10.7519/j.issn.1000-0526.1975.05.018
Abstract:
无机矿粉对碱激发碳酸盐胶凝材料性能的影响

武汉理工大学学报 , 2004,
Abstract: ?研究了矿渣、粉煤灰和偏高岭土对碱激发碳酸盐胶凝材料的强度、抗渗性能以及凝胶时间的影响,探讨了该材料浆体的流变特性。研究表明:1)矿渣可大幅度提高该材料的强度和抗渗性能,但会显著缩短凝胶时间;偏高岭土有利于强度的提高,但对抗渗性能和凝胶时间的影响不显著;粉煤灰对这些性能的影响均不显著;2)无机矿粉复合后,可使材料28d的抗压强度达43mpa以上,抗渗压力达1.5mpa以上;3)该胶凝材料的浆体为宾汉型流体;4)该胶凝材料中掺加粉煤灰,其浆体的流动性优于掺加矿渣和偏高岭土的浆体流动性
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