Passive seismic experiment and ScS wave splitting in the southwestern subbasin of South China Sea

The seismic experiment of 3D array of OBS in the southwestern sub-basin of the South China Sea(SCS) is briefly introduced in this paper.The data analysis of broadband OBS shows that totally 93 earthquakes with magnitude of Ms 6.0-6.9 and 10 earthquakes with magnitude above Ms 7.0 were recorded in high quality during this experiment,especially the catastrophic earthquake Ms 9.0 occurred in the east sea area of Japan on March 11,2011.The anisotropy parameters inversion of ScS wave of four events above Ms 7.0 indicates that the fast direction of shear wave is N58°E parallel to the ceased spreading ridge of the southwestern sub-basin of SCS(the slow direction is S35°E perpendicular to the spreading ridge),which means the spreading ridge is under compressing stress at present and the cessation of seafloor spreading is related to such stress field as well.     

A Study of the system control model of caisson dewatering of the north anchorage of Taizhou Bridge

A caisson foundation is applied to the north anchorage of Taizhou Yangtze River Highway Bridge of which the initial caisson sinking requires dewatering. Since the caisson foundation is quite close to nearby buildings, a system control model is established with source (sink) distribution and intensity being the object function, minimum requirements of settlement and deformation of surroundings caused by dewatering and dynamic water levels during different working procedures being constraints, and the design parameter of pumping wells being the variable,so as to lower the jeopardizing of surrounding buildings, which provides a new method for active control over settlement during dewatering. Such a method of dewatering based on system control model should be of significance for similar projects involving dewatering.     

超细磨粉煤灰配制超高强混凝土的研究

利用超微气流粉碎机制得了平均粒径为１～５μｍ的微米级粉煤灰，将其作为掺合料配制出具有较高流动性（坍落度２０ｃｍ左右）的超高强混凝土；分析了超细磨超高强混凝土的强度发展规律，探讨了超细磨粉煤灰在混凝土中的增强机理     

Large-scale screening of disease model through ENU mutagenesis in mice

Manipulation of mouse genome has merged as one of the most important approaches for studying gene function and establishing the disease model because of the high homology between human genome and mouse genome.In this study, the chemical mutagen ethylnitrosourea (ENU) was employed for inducing germ cell mutations in male C57BL/6J mice. The first generation (G1) of the backcross of these mutated mice, totally 3172, was screened for abnormal phenotypes on gross morphology, behavior, learning and memory, auditory brainstem response (ABR), electrocardiogram (ECG), electroretinogram (ERG), flash-visual evoked potential (F-VEP), bone mineral density, and blood sugar level. 595 mice have been identified with specific dominant abnormalities. Fur color changes, eye defects and hearing loss occurred at the highest frequency. Abnormalities related to metabolism alteration are least frequent. Interestingly, eye defects displayed significant left-right asymmetry and sex preference. Sex preference is also observed in mice with abnormal bone mineral density. Among 104 G1 generation mutant mice examined for inheritability, 14 of them have been confirmed for passing abnormal phenotypes to their progenies. However, we did not observe behavior abnormalities of G1 mice to be inheritable, suggesting multi-gene control for these complicated functions in mice. In conclusion,the generation of these mutants paves the way for understanding molecular and cellular mechanisms of these abnormal phenotypes, and accelerates the cloning of diseaserelated genes.     

蔽光管道内自动探火装置的研制

用于蔽光管道内的自动探火装置采用了ＭＣＳ－５１单片机应用系统，具有小火星计数及大火报警两种功能。该装置检测灵敏度高，可编程，可靠性好。     

An optimal scheduling algorithm based on task duplication

1.INTRODUCTION Anefficientschedulingofaparallelprogramontothe processorsisvitalforachievingahighperformance fromaparallelcomputersystem.Thetaskduplication basedschedulingisanewapproachtothescheduling problems.Sincethecommunicationtimeamongtasks assignedtothesameprocessorisconsideredtobe negligible,taskduplicationisonewayofreducingthe interprocessorcommunicationoverhead.Usingthis approach,someofthemorecriticaltasksofaparallel programareduplicatedonmorethanoneprocessor.Thiscanpotentiallyred…     

The Role of Computational Intelligence in Sensory Evaluation

IntroductionComputationalintelligence(CI)isthestudyofthedesignofintelligentagents.Thedifferencebetweentraditionalartificialintelligence(AI)andCIisthatAIisbasedonconventionalhardcomputingwhereasCIisbasedonsoftcomputing(SC).Ineffect,therolemodelforsoftcomputingisthehumanmind.Theguidingprincipleofsoftcomputingis:exploitthetoleranceforimprecision,uncertaintyandpartialtruthtoachievetractability,robustnessandlowsolutioncost.Softcomputinghasrecentlybecomeahottopiconconferencesandinliterature.As…     

凉山州优质水稻高产高效配套技术

根据凉山稻作现状,提出了优化品种和区域化种植,应用简便高效育秧技术,适时移栽,控制密度,巧施肥料,科学灌水,综合防治病虫草害,适时收获,科学晾晒等配套技术。     

仪器分析实验教学中的问题与对策

结合多年仪器分析实验教学改革实践,探讨了实验教学如何适应21世纪教育改革发展需要,培养适应社会需要的创新人才。     

GB176-87氟硅酸钾法测定二氧化硅的改进

针对GB176-87拟定的氟硅酸钾法测定二氧化硅结果偏低的问题,本文采用热溶液中制备沉淀,慢速滤纸过滤。5％KCl-50％乙醇水溶液洗涤沉淀等改进措施,使测定二氧化硅的回收率由原方法的约95％提高到约99％,测定的精度由原方法的约1.6％优化到约0.6％。