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Search Results: 1 - 10 of 47500 matches for " LIANG Sheng-kang "
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PROPERTIES OF ION-EXCHANGE MEMBRANE FROM IRRADIATED POLY (STYRENEBUTADIENE-4-VINYLPYRIDINE) TRIBLOCK COPOLYMER I. EFFECT OF AMINATING SULFONATING AGENTS AND REACTION TEMPERATURE ON PROPERTIES OF ION EXCHANGE MEMBRANE
辐照三嵌段聚苯乙烯-丁二烯-4-乙烯基吡啶共聚物离子交换膜性能的研究——Ⅰ.季铵化、磺化试剂、反应温度对膜性能的影响

LIANG Liang,YING Sheng-kang,
梁良
,应圣康

高分子学报 , 1991,
Abstract: In this paper, the properties of ion-exchange membrane prepared by irradiating poly(sty-rene-butadiene-4-vinylpyridine) triblock copolymer, with different sulfonating agents and qoa-ternizing agents were investigated. The results showed that the ion-exchange capacity of membrane sulfonated by chlorsulfonic acid is higher than that of membrane sulfonated by sulfonic acid. Although the ion-exchange capacity of membrane quaternized by methyl iodide is higher than that of membrane quaternized by methylene diiodide,mechanical properties of the former are too poor to form membranes. The ion-exchange membrane with higher ion-exchange capa-city will result in lower concentration membrane potential,higher membrane conductivity and water content.
A Squint Mode Bistatic Synthetic Aperture Radar Image Formation Algorithm Based on Second Range Compression
基于二次距离压缩的双基地合成孔径雷达斜视成像算法

Zhang Sheng-kang Yang Ru-liang,
张升康
,杨汝良

电子与信息学报 , 2008,
Abstract: An squint mode image formation algorithm for “Tandem” Bistatic Synthetic Aperture Radar(BSAR) is addressed in terms of its geometry and echo models, which is relative to second range compression in monostatic SAR. Aspects of second range compression, range migration and azimuth focusing, which are different with those in monostatic SAR due to the separation of receive-transmit platforms, are resolved successfully. The algorithm is validated for bistatic SAR with arbitrary bistatic angle geometry.
PROPERTIES OF ION-EXCHANGE MEMBRANE FROM IRRAD- IATED POLY (STYRENE-BUTADIENE-4-VINYLPYRIDINE) TRIBLOCK COPOLYMER II. PREPARATION
辐照三嵌段聚苯乙烯-丁二烯-4-乙烯基吡啶共聚物离子交换膜性能的研究——Ⅱ.共聚物膜的基本性能及分离实验

LIANG Liang,JIN Mi-hua,WAN Yu-lan,YING Sheng-kang,
梁良
,金咪花,万雨南,应圣康

高分子学报 , 1992,
Abstract: In present paper, the properties of charge-mosaic membrane prepared from irradiated poly(styrene-butadiene-4-vinylpyridine) triblock copolymer were investigated. The results showed that the fluxes of water and electrolyte through the membrane are 2.40×10-5 mol/cm-3 min, and 2.10×10-3 mol/cm-2 sec respectively when the concentrations of KCl are 0.1 mol/1 and 10-3 mol/1 on the two sides of membrane. Experimental results of separation showed that charge-mosaic membrane has better dialysis properties for permeation to salt but not to high mole-cular weight or low molecular weight non-electrolytes.For mixed solution of KCl and protein,KCl and sucrose,the fluxes of KCl are 1.07×10-8 mol/cm2sec and 1.10×10-8 mol/cm2sec respectively.
An Adaptive Outlier Algorithm Based on Kalman Filtering for Beidou Satellite Passive Combination Navigation
一种基于卡尔曼滤波处理的北斗卫星无源组合导航自适应野值剔除方法

Wang Guang-ding,Zhang Sheng-kang,Yang Ru-liang,
王光鼎
,张升康,杨汝良

电子与信息学报 , 2008,
Abstract: In Kalman filtering applications to combination satellite navigation the observation values including outliers are important effect on optimal filtering.The outliers affect the position filtering accuracy and make estimation inaccurate. In this paper,an outlier decision based on adaptive robust Kalman filtering is presented,which can keep orthogonal properties of innovation sequence.Simulation results show that the modified algorithms are effectively resistant to outliers in sampling date.
STUDY ON TELOMERIZATION OF TETRAFLUOROETHYLENE WITH ISOPROPANOL
四氟乙烯与异丙醇的调节聚合研究

HONG Liang-gou,HU Chun-pu,YING Sheng-kang,MAO Shao-giu,
洪良构
,胡春圃,应圣康,毛绍裘

高分子学报 , 1987,
Abstract: 采用气相色谱法,研究了反应温度、引发剂浓度、四氟乙烯单体压力对四氟乙烯与异丙醇调聚反应产物重量分布的影响。实验结果表明,随温度升高,n=1的产物含量增加,n>1的各产物含量下降;单体压力的影响则相反;引发剂浓度的影响不明显。反应初期n=1产物生成速率较快,反应中、后期有利于m≥3产物的生成。
National Surveillance Study on Carbapenem Non-Susceptible Klebsiella pneumoniae in Taiwan: The Emergence and Rapid Dissemination of KPC-2 Carbapenemase
Sheng-Kang Chiu, Tsu-Lan Wu, Yin-Ching Chuang, Jung-Chung Lin, Chang-Phone Fung, Po-Liang Lu, Jann-Tay Wang, Lih-Shinn Wang, L. Kristopher Siu, Kuo-Ming Yeh
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0069428
Abstract: Objectives The global spread and increasing incidence of carbapenem non-susceptible Klebsiella pneumoniae (CnSKP) has made its treatment difficult, increasing the mortality. To establish nationwide data on CnSKP spread and carbapenem-resistance mechanisms, we conducted a national surveillance study in Taiwanese hospitals. Methods We collected 100 and 247 CnSKP isolates in 2010 and 2012, respectively. The tests performed included antibiotic susceptibility tests; detection of carbapenemase, extended-spectrum β-lactamases (ESBL), and AmpC β-lactamases genes; outer membrane porin profiles; and genetic relationship with pulsed-field gel electrophoresis and multilocus sequence type. Results The resistance rate of CnSKP isolates to cefazolin, cefotaxime, cefoxitin, ceftazidime, and ciprofloxacin was over 90%. Susceptibility rate to tigecycline and colistin in 2010 was 91.0% and 83.0%, respectively; in 2012, it was 91.9% and 87.9%, respectively. In 2010, carbapenemase genes were detected in only 6.0% of isolates (4 blaIMP-8 and 2 blaVIM-1). In 2012, carbapenemase genes were detected in 22.3% of isolates (41 blaKPC-2, 7 blaVIM-1, 6 blaIMP-8, and 1 blaNDM-1). More than 95% of isolates exhibited either OmpK35 or OmpK36 porin loss or both. Impermeability due to porin mutation coupled with AmpC β-lactamases or ESBLs were major carbapenem-resistance mechanisms. Among 41 KPC-2-producing K. pneumoniae isolates, all were ST11 with 1 major pulsotype. Conclusions In 2010 and 2012, the major mechanisms of CnSKP in Taiwan were the concomitance of AmpC with OmpK35/36 loss. KPC-2-KP dissemination with the same ST11 were observed in 2012. The emergence and rapid spread of KPC-2-KP is becoming an endemic problem in Taiwan. The identification of NDM-1 K. pneumoniae case is alarming.
Toxic Effects of Water-Based Drilling Fluid and Its Components on Skeletonema costatum
钻井液及其组分对中肋骨条藻的毒性效应(Toxic Effects of Water-Based Drilling Fluid and Its Components on Skeletonema costatum)

YAN Xue-ping,ZHANG Qian-qian,LIANG Sheng-kang,ZHU Fu-xian,XUE Yu-zhi,LI Gong-rang,ZHANG Yan,
闫学平
,张前前,梁生康,朱福贤,薛玉志,李公让,张妍

生态毒理学报 , 2010,
Abstract: 为探讨钻井液及其组分的毒性效应,采用荧光技术研究了一种水基钻井液WBF及其7种主要组分(HXJ、PAC141、KPAM、PolyAL、XC、PolyA、Mud)对海洋微藻中肋骨条藻(Skeletonema costatum)的毒性作用,以未加入WBF或其组分的中肋骨条藻的叶绿素荧光强度为参照,计算得到钻井液及其组分对中肋骨条藻不同时间的EC50值. 结果表明:WBF的7种单组分中,PolyA对中肋骨条藻的96h EC50 = 2 × 103mg·L-1,为有毒组分,PolyAL的96h EC50 = 3 × 104mg·L-1,为低毒组分,其余5种组分无毒;WBF的有毒和低毒组分复配时其毒性与作用时间有关,PolyA与PolyAL在24h之内表现为协同作用,之后主要表现为拮抗作用;WBF的毒性主要取决于其有毒组分,而低毒和无毒组分对钻井液的毒性有协同增强作用.
Role of Irradiance on the Seasonality of Skeletonema costatum Cleve Blooms in the Coastal Area in East China Sea
光照与东海近海中肋骨条藻(Skeletonema costatum)赤潮发生季节的关系

SUN Bai-ye,LIANG Sheng-kang,WANG Chang-you,WANG Xiao-bo,WANG Xiu-lin,LI Yan-bin,
孙百晔
,梁生康,王长友,王晓波,王修林,李雁宾

环境科学 , 2008,
Abstract: 利用船基现场培养实验和模型计算的方法,研究了光照与东海近海春夏季均能发生中肋骨条藻赤潮的关系.结果表明,中肋骨条藻生长的最适光照强度(Iopt)随水温(t)的增加呈“慢升快降”的不对称“倒V”形变化特征,在25℃左右Iopt最大,为121.6 W·m-R, Iopt-t 曲线符合Blanchard方程; 由东海海表水温计算的中肋骨条藻Iopt的季节变化特征与东海海面光照强度、海水透明度的季节变化基本同步(RR=0.907±0.115, p<0.001),且滞后于海面光照强度2个月左右,这使春夏季海水中光照最适宜生长的水层均为全年最厚(6m左右).可见,中肋骨条藻对光照的适应性很强,海区海水光照的适宜性是春夏季均能形成大规模中肋骨条藻赤潮的重要原因之一.
Effects of Irradiance on Blooms of the Dinoflagellate Prorocentrum Donghaiense Lu in the Coastal Area in East China Sea
光照在东海近海东海原甲藻赤潮发生中的作用

SUN Bai-ye,WANG Xiu-lin,LI Yan-bin,WANG Chang-you,WANG Ai-jun,LIANG Sheng-kang,ZHANG Chuan-song,
孙百晔
,王修林,李雁宾,王长友,王爱军,梁生康,张传松

环境科学 , 2008,
Abstract: With field culture experiments and model calculations, the natural-light-dependent growth and the optimal light layers in sea water for growth of red tide dinoflagellate Prorocentrum donghaiense Lu were studied in order to analyze the role of light on algal blooms in the coastal area in East China Sea in spring. The results show that the relationship of growth and light can be well described by Steele's equation, and the optimal light intensity (Iopt) of P. donghaiense is (38.2 +/- 3.8) W x m(-2), which is lower than Iopt for several other red tide algae (40-133 W x m(-2)), meaning that P. donghaiense may have an advantage when developing blooms in turbid environments where solar irradiance is easily attenuated. The optimal light layers for P. donghaiense growth are thicker offshore than inshore, and the thickness of optimal light layers in the subsurface water usually in 3-15 m in depth is about 5-10 m in the red tide area. The trade-off of light and nutrient fitness results in blooms in the so-called red tide area, and the light-optimum characteristic of the subsurface water is an important factor for the subsurface bloom development in spring.
Analysis of hydrocarbon-degrading bacterium community structures in enrichment cultures with different carbon sources
不同碳源富集的石油烃降解菌群结构的分析

YANG Shi-mei,ZHANG Yi-xiao,GAO Guang-jun,GUO Li-guo,LIANG Sheng-kang,SU Rong-guo,
杨仕美
,张翼霄,高光军,郭利果,梁生康,苏荣国

海洋科学 , 2009,
Abstract: To enrich and isolate different function hydrocarbon-degrading bacteria from long-term oil-contaminated environment, crude oil and hexadecane were used as sole carbon sources respectively. On the other hand, bacterium community structures of enrichment were analysed by both plate method and PCR-DGGE (denaturing gradient gel electrophoresis) method. Two strains of bacteria, named as TJ-1 and TJ-2, were isolated from enrichment with crude oil as a sole carbon source. Strain TJL-1 and Strain TJL-2 were isolated with hexadecane as a sole carbon source. The 16SrDNA identified results showed that the four strains of TJ-1, TJ-2, TJL-1 and TJL-2 were Bacillus pumilu, Acinetobacter venetianus, Oceanobacillus Picturae, Bacillus pumilus, respectively. PCR-DGGE fingerprint showed that there were 5 dominating bacteria in crude oil culture and 2 dominating bacteria in Hexadecane culture. Dominating bacteria were different between crude oil culture and Hexadecane culture. It was indicated that PCR-DGGE method offers more comprehensive information of bacteria community structures than plate method.
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