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Search Results: 1 - 10 of 279347 matches for " <br>罗晶 "
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某型航空发动机可靠性提高途径研究

付焱,泽明<br>付焱, 泽明
- , 2016,
Abstract: 以某型航空发动机为研究对象,针对卡型直升机逐渐增多的海上训练任务对发动机可靠性提出的更高要求,以及部队反应的发动机功率不足和振动值偏大等问题,通过对某型发动机的使用可靠性与维修性进行深入研究,并结合飞行安全及补给、维护等特点,深入研究某型航空发动机的可靠性及提高途径.
The Impact of the Stratiform Heating on Madden-Julian Oscillation
层云加热对热带大气季节内振荡的影响

CHA Jing,LUO Dehai,<br>查,德海
大气科学 , 2011,
Abstract: The impact of stratiform heating on the Madden-Julian Oscillation(referred to as MJO) is investigated.The nonlinear CISK(Conditional Instability of Second Kind)-Kelvin wave equations with both cumulus heating and stratiform heating are reduced to ordinary differential equations by using a spectral truncated method.With the help of the fourth-order Runge-Kutta method,the numerical solutions are obtained.It is found that the MJO could also be excited by the only stratiform heating.Meanwhile,the combined role ...
传播学视域下的微博营销

湖南工业大学学报(社会科学版) , 2013,
Abstract: 微博营销以微博作为营销平台,利用自己的微博更新向网友传播企业、产品的信息,树立良好的企业形象和产品形象。虽然微博营销具有便捷性、低门槛、传播力广等特点,但也不能忽略微博营销的劣势。在海量信息里,如何精准传播,扩大产品传播的深度和广度需要有精心的策划。在运行过程中,微博营销需要注意的技巧以及需要规避的问题。
玉米醇溶蛋白的磷酸化修饰及结构研究

- , 2015, DOI: 10.13982/j.mfst.1673-9078.2015.8.016
Abstract: 玉米醇溶蛋白广泛应用于食品、医药、生物材料、纺织工业等领域,但蛋白不溶于水的性质限制了其应用范围。为改善其性质,本文用磷酸化修饰玉米醇溶蛋白,测定磷酸化修饰前后玉米醇溶蛋白的黏度、等电点、酸、碱稳定性等物理性质;用圆二色谱研究磷酸化修饰前后蛋白的二级结构和三级结构变化,用示差扫描量热法(DSC)测定蛋白的热稳定性。结果表明:Zein蛋白在80%乙醇溶液中的等电点(PdI)为pH 5.97,粒径为1436 nm。经磷酸化修饰后,蛋白与磷酸盐以O-磷酸键和N-磷酸键结合,酸性条件(pH 5.0)主要以O-磷酸键结合为主,中性及碱性(pH 7.0和9.0)条件下主要以N-磷酸键结合。同时,蛋白的黏度增加,等电点酸性漂移,α-螺旋结构含量降低,玻璃态转化温度升高。
Zein has widespread applications in food, medicine, biological materials, and the textile industry, but its use is limited to some degree due to the insolubility in water. To overcome this drawback, zein was phosphorylated by POCl3 and its physical properties of modified zein, such as viscosity, isoelectric point, as well as stability in acid and alkali were determined. Secondary and tertiary structures of zein before and after phosphorylation were measured by circular dichroism (CD), while thermal stability was determined using differential scanning calorimetry (DSC). The results showed that in 80% ethanol solution, the isoelectric point (PdI) of zein was at pH 5.97 and particle size was 1436 nm. Post modification, phosphate was combined with zein by O- and N- phosphate bonds, which mainly formed O-phosphate bonds under acidic conditions (pH 5.0) and N-phosphate bonds under neutral and alkaline conditions (pH 7.0 and 9.0). In addition, the viscosity of modified zein increased, the isoelectric point showed acidic shift, α-helix structure content reduced, and glass transition temperature increased.
Research and Practice of a New Teaching Pattern of Microbiology Course for Traditional Chinese Pharmacology Specialty
中药学专业微生物学教学新模式的研究与实践

LUO Jing,LIU Yan-Ming,<br> ,刘燕明
微生物学通报 , 2008,
Abstract: 结合中药学专业的特点和教学内容为教学对象服务的原则,以提高教学质量为目标,我们进行了中药学专业微生物学课程结构和教学内容的改革.创建了教学新模式,突出以人为本,把课程传授的知识和技能定位在学生未来学习、思维、联系新事物桥梁的基础上,对应将教学内容分为基础知识、相关知识、应用知识三部分,充分体现三基(基础理论、基本知识、基本技能),强化针对性、先进性扣启发性,以使学生构建可满足21世纪需求和可持续发展的合理的知识结构.
Re-examinations of the Hypomyces specimens on deposit in HMAS
中国科学院微生物研究所菌物标本馆馆藏菌寄生属Hypomyces标本的分类研究

LUO Jing,ZHUANG Wen-Ying,<br>,庄文颖
菌物学报 , 2012,
Abstract: Specimens of the genus Hypomyces deposited in the Herbarium Mycologicum Academiae Sinicae were re-examined. Nine species were identified. Among them, H. marcrosporus, H. subiculosus and H. tegillum are new records for China.
Can COI gene be used as DNA barcode for the nectriaceous fungi?
COI基因作为丛赤壳科真菌DNA条形码的测试

ZHAO Peng,LUO Jing,ZHUANG Wen-Ying,<br>赵鹏,,庄文颖
菌物学报 , 2012,
Abstract: COI gene was tested with 76 strains of 33 species of the nectriaceous fungi to investigate its feasibility of serving as a DNA barcode. The results indicated that introns are present in some species, which made it difficult for PCR amplification and sequencing. COI gene is not a good DNA barcode for this group. Analysis of the obtained COI sequences showed that this gene may have the capacity to distinguish species of the nectriaceous fungi.
不同特征滤膜真空预压处理吹填土的模型试验研究
Model test of dredger fill of treatment using vacuum preloading method base on different equivalent opening size

,雷金山,<br>LUO Bin, LEI Jinshan, TANG Jing
- , 2017,
Abstract: 在采用真空预压法处理含水率较高的吹填土时,常常引起塑料排水板外包滤膜的淤堵,这与塑料排水板外包滤膜本身等效孔径的不同有很大关系。基于2种不同等效孔径的排水板滤膜针对吹填土进行真空预压的模型试验,对比2种不同滤膜孔径情况下,真空预压过程中的出水量、出水速率以及滤膜表面沉降的不同特点;对不同滤膜等效孔径模型试验真空预压前后模型箱内土体的含水率、渗透系数和颗粒分布等特性进行对比分析。研究成果对进一步深化真空预压过程中土颗粒粒径和等效孔径之间的定量关系研究具有理论研究意义。
Geotextile has been widely used in the vacuum consolidation, which is one of the ground improvement methods. The opening size in the geotextile not only affects the flow of water but also the soil particle migration, which is associated with the effect of vacuum consolation indirectly. In this paper the effect of geotextile on vacuum consolidation was studied under the vacuum loading in views of macro and micro analyses. Laboratory model tests of the vacuum consolidation were performed with three different opening sizes of the geotextile. The changes with the position of measured points in water content, coefficient of permeability, composition of soil grain and geometric parameter of micro-structure of soil around the prefabricated vertical drain (PVD) were investigated after the tests. The relationship between the equivalent opening size and influencing effect of vacuum consolidation was discussed by means of the distribution of the above parameters around PVD. The qualitative relationship among the equivalent opening size, clogging and effect of consolidation was explained from the view of the soil particle migration, which results in a base in the further theoretical study of quantitative relationship among the vacuum loading, size of soil particle and equivalent opening size of geotextile
The Influence of Childhood Trauma on Trait-depression and Trait-anxiety: the Mediation-specificity of Schemas
儿童期创伤对特质抑郁和特质焦虑的影响:图式中介特异性研究

CUI Li-Xia,LUO Xiao-Jing,XIAO-Jing,<br>崔丽霞,小婧,
心理学报 , 2011,
Abstract: 根据Beck的认知内容特异性假说(Cognitive Content Specificity Hypothesis, CCSH), 本研究假设早期适应不良图式(EMSs)在儿童期创伤与特质抑郁和特质焦虑间存在中介效应的特异性。然后对668名大学生施以儿童期创伤问卷(CTQ-SF), Young图式问卷短版(YSQ-SF), 特质抑郁问卷(T-DEP)以及特质焦虑问卷(T-AI), 经中介效应检验程序分析, 结果表明:(1)三类儿童期创伤:情感虐待、情感忽视和躯体忽视与特质抑郁和特质焦虑相关均显著, 且三类创伤与特质抑郁和特质焦虑的相关系数差异不显著; (2)针对三类创伤的中介分析均表明情感剥夺、羞耻、社交孤立/疏离和自我牺牲等与没价值、无能力有关的图式在儿童期创伤和特质抑郁间起中介作用, 而不信任/虐待和对疾病/伤害易感性等与危险有关的图式在儿童期创伤和特质焦虑间起中介作用。结论:早期适应不良图式在儿童期创伤与特质抑郁和特质焦虑间存在中介效应的特异性。
Bioinformatic Analysis of Adenoma-Normal Mucosa SSH Library of Colon
结肠腺瘤-正常文库的生物信息学分析

L,<br>吕炳建,,徐 静,张 昊,敏捷,朱益民,来茂德
遗传 , 2006,
Abstract: We established a colonic adenoma-normal mucosa suppressive subtraction hybridization(SSH) library in 1999.In this study,we wanted to explore the expression profile of all candidate genes in this library.We developed an EST pipeline which contained two in-house software packages,nucleic acid analytical software and GetUni.The nucleic acid analytical software,an integrator of the universal bioinformatics tools including phred,phd2fasta,cross_match,repeatmasker and blast2.0,can blast sequences of differential clones with the downloaded non-redudant nucleotide(NR) database.GetUni can cluster these NR sequences into Unigene via matching with the downloaded Homo sapiens UniGene database.Sixty-two candidate genes in A-N library were obtained via the high throughput automatic gene expression bioinformatics pipeline.Gene Ontology online analysis revealed that ribosome genes and immunity-regulating genes were the two most common categories in the KEGG or Biocarta Pathway.We also detected the expression of 2 genes with highest hits,Reg4 and FAM46A,by semi-quantitative RT-PCR.Both genes were up-regulated in 10 or 9 out of 10 adenomas in comparison with the paired normal mucosa,respectively.The candidate genes in A-N library would be of great significance in disclosing the molecular mechanism underlying in colonic adenoma initiation and progression.
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