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| 1 | Hydrocarbon test in lower-layer atmosphere to predict deep-sea petroleum or hydrate in the Okinawa Trough: an example显示文摘Light hydrocarbon (methane, ethane, propane, butane and CO 2) test and C isotopic analysis of CO 2 are conducted for over 100 lower-layer atmospheric samples from the East China Sea slope and the Okinawa Trough. The results show that the lower-layer atmosphere mainly consists of CO 2 and then of CH 4, and the CO 2 concentrations are calculated to have a high average value of 0.87 ω/10 -2,about three times that of the regional background (0.3 ω/10 -2). The result also shows that the average value of C isotope -20.8×10 -3 is given to the CO 2, inferring that it is inorganic gas. Thus,for the future’s work in the Okinawa Trough, special attention should be paid to CO 2 hydrate, which is very possibly an important hydrate type. | Gong Jianming1, Chen Jianwen 1, 2, Li Gang1, Zhang Xunhua1, Li Jipeng3, Huang Fulin1 1. Qingdao Institute of Marine Geology, Qingdao 266071, China. 2. Ocean University of China, Qingdao 266003, China 3. Hefei Institute of Petroleum Chemical Exploration, China Petroleum Exploration and Development Research Institute, Hefei 230022,China | 2003 | Acta Oceanologica Sinica2003，22，4： | 4 |
| 2 | Testing heteroscedasticity by wavelets in a nonparametric regression model显示文摘In the nonparametric regression models, a homoscedastic structure is usually assumed. However, the homoscedasticity cannot be guaranteed a priori. Hence, testing the heteroscedasticity is needed. In this paper we propose a consistent nonparametric test for heteroscedasticity, based on wavelets. The empirical wavelet coefficients of the conditional variance in a regression model are defined first. Then they are shown to be asymptotically normal, based on which a test statistic for the heteroscedasticity is constructed by using Fan's wavelet thresholding idea. Simulations show that our test is superior to the traditional nonparametric test. | IP Waicheung | 2006 | Science China Mathematics2006，49，9： | 2 |
| 3 | Experimental study on the wave loads of twin-plate breakwaterunder oblique waves显示文摘In this study, systematic physical model tests were performed to investigate the wave forces on the twin-plate breakwater under irregular waves. Based on the experimental results, the effects of the relative plate width B/L,wave height Hs/D and incident angle θ0 on the wave forces were analyzed and discussed. The results showed that:(1) The envelopes of the total wave pressure were generally symmetrical along the direction of plate width under the incident angles(θ0) being 0°, 15°, 30°, 45° and 60°. In particular, the envelopes of wave pressure atθ0=30° were larger than all other cases.(2) The synchronous pressure distribution of the breakwater under oblique wave action was more complicated comparing to the normal incident waves.(3) Based on data analysis, an empirical formula was obtained to estimate the total vertical force of the twin-plate breakwater.This empirical formula can be a good reference for the design basis of engineering applications under specified wave conditions. | GU Qian HUANG Guoxing ZHANG Ningchuan LI Longxiang SHAO Zhong'an | 2016 | Acta Oceanologica Sinica2016，35，12： | 2 |
| 4 | Repair Effect of Hot Work Tool Steel by Laser-Melting Process显示文摘Both wear and crack due to heat checking in hot work tool steel are major failure modes. It is desirable to find amethod to lengthen the tool life while reducing manufacturing cost. This paper suggests a method to improve toollife for hot work tool steel (SKD6) with crack by laser-melting process. The method has been evaluated using theimpact and fatigue test results. It is demonstrated that a repair of the crack by a laser-melting process is effectivefor life extension of the damaged tool. | Yahong SUN Satoshi HANAKI Hitoshi UCHIDA Hisakichi SUNADA Nobuhiro TSUJII | 2003 | Journal of Materials Science & Technology2003，19，z1： | 2 |
| 5 | An apparatus for measuring mechanical properties of microstructures in tensile mode显示文摘An apparatus for measuring mechanical properties of microstructures in tensile mode is described. The apparatus consists of 4 functional parts: piezoelectric actuator, capacitive displacement sensor, specimen gripping mechanism and optical microscope. The configurations and specifications of these parts are elucidated in detail.Specimens used for the tensile mechanical testing are fabricated with the photolithography process. By using this apparatus, the fatigue property of polysilicon films has been measured successfully. | WU Hao MENG Yonggang SU Caijun WEN Shizhu | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，z1： | 1 |
| 6 | Theory and application of the transient injection well test显示文摘Based on the theory of the pumping well test, the transient injection well test was suggested in this paper. The design method and the scope of application are discussed in detail. The mathematical models are developed for the short-time and long-time transient injection test respectively. A double logarithm type curve matching method was introduced for analyzing the field transient injection test data. A set of methods for the transient injection test design, experiment performance and data analysis were established. Some field tests were analyzed, and the results show that the test model and method are suitable for the transient injection test and can be used to deal with the real engineering problems. | LIU Yuewu CHEN Huixin LIU Qingquan GONG Xin ZHANG Dawei YAO Deliang LI Lianxiang | 2005 | Science China(Technological Sciences)2005，48，z1： | 1 |
| 7 | Shear Strength Behavior of Two Landfill Clay Liners显示文摘Direct shear tests were conducted to obtain both the shear strength of compacted clay liners (CCLs) specimens and the interface shear strength between compacted clay liner and base soil. These experiments were conducted under the conditions of five different water contents. The experimental results show that shear strength of both CCLs and CCLs/base interface decreases with the increase in the water content of CCLs and base soil. In addition, the considerate concentration of NaCl in leachate has no deteriorating effect on the shear strength of liners. Triaxial shear tests were also conducted on clay liner specimens to obtain total and effective shear strength under a fast compression. The shear strength parameters with total stress are =18.5° and c =30 kPa for clay bentonite, and =48.5° and c =90 kPa for sand bentonite and those with effective stress are ’=27.2° and c’ =25 kPa for clay bentonite, and ’=35° and c ’=100 kPa for sand bentonite, respectively. These results indicate that the compacted clay bentonite shows normal consolidation, but that the compacted sand bentonite exhibits over consolidation. | Jian Wenxing Engineering Faculty, China University of Geosciences, Wuhan 430074 Masashi Kamon Toru Inui Department of Global Environmental Engineering, Graduate School of Engineering, Kyoto University,Kyoto, 606 8501, Japan Takeshi Katsumi Department of Civil Engineering, Ritsumeikan University, Kusatsu, Shiga, 525 8577, Japan | 2002 | Journal of China University of Geosciences2002，13，3： | 1 |
| 8 | ANALYSIS ON EPITOPES OF IGM WITH MONOCLONAL ANTI-ISOTYPIC AND ANTI-IDIOTYPIC ANTIBODIES AGAINST IgM FROM B-CLL显示文摘A double antibodies additivity ELISA test was employed to identify the epltopes which can be recognized by monoclonal antibodies (McAbs) against IgM from B chronic lymphocyte leukemia (B-CLL). The computer grouping programme analysis showed that 4 and- isotypic MaAbs could be divided into two groups and 10 anti- idiotype McAbs could be divided into four groups. The result was consistent with that of the indirect sandwich ELISA and inhibition ELISA test. It suggested that there were at least 6 distinct IgM epitopes which can react specifically with 14 McAbs. Our study indicated that the combination of the additivity ELISA test and the computer grouping programme analysis is of help in studying the relationship of the structure and function of antigen. | 沈关心 苏娜 王晓林 朱慧芬 张悦 秦立轩 | 1992 | Chinese Journal of Cancer Research1992，4，4： | 0 |
| 9 | Experimental Study on Seismic Behavior ofSeismic-damaged Lateral Joints in CompositeFrame Consisting of CFSST Columns and SteelBeams Strengthened with Enclosed ReinforcedConcrete显示文摘A new composite strengthening method of seismic-damaged lateral joints in composite frame consisting of Concrete-Filled SquareSteel Tubes (CFSST) columns and steel beams strengthened with enclosed Reinforced Concrete (RC) at the ends of columns andwelding steel plates at the ends of beams was presented. Based on the current design specifications, one half scaled models of 4lateral joints in composite frame consisting of CFSST columns and steel beams were designed and manufactured. One model wasoriginal control specimen, one was strengthened by enclosed RC, and the others were strengthened after pre-damage. The destructiontests under lateral cyclic load on the models were carried. The effectiveness of seismic-damaged joints strengthened with enclosedRC and the reinforcement effect on different levels of seismic damage were studied. The test results show that seismic- damagedjoints in composite frame consisting of CFSST columns and steel beams strengthened with enclosed RC meets the strongcolumn-weak beam joints requirement of seismic design, and the failure modes are of all joints are the bending failure of steel beam.The reinforcement with enclosed RC has a significant on increasing the ultimate capacity and the seismic behaviors of joints. Thestudy indicated the rehabilitated joints recover the level of their original seismic performances before seismic damage in a certainextent damage level. Based on the test data, namely the ultimate capacity, limit displacement, ductility, the energy consumptioncoefficient, limit displacementthe strengthening method of seismic-damaged joints by strengthened with enclosed RC is an effectivemethod for seismic strengthening. | | 2015 | 建筑工程(中英文版)2015，3，2： | 0 |
| 10 | The Reliability and Validity of Toe Grip Strength as an Index of Physical Development in 4- to 5-Year-Old Children显示文摘Studies on TGS (toe-grip strength) are currently proliferating as a result of the development of the dynamometer. The purpose of the present study was to investigate the reliability and validity of TGS as a physical function in preschool aged children. The participants were 153 preschoolers. Each participant was measured in terms of his or her TGS and completed a MAT (motor ability test). The reliability of the measurements was investigated via Pearson's r and Cronbach's a through a test-retest method, as well as a Bland-Altman plot. The validity of the TGS value was investigated by measuring the correlation between TGS and each component of the MAT, the principal component analysis, and a two-way layout ANOVA with general linear model (gender and age). All reliability coefficients were more than 0.70. Though all components of the MAT relating to TGS were found to be significant (P 〈 0.05), these correlations were weak. However, TGS was found to be a physical function that relating to the lower limbs and develops with aging. Therefore, TGS was found to be a highly reliable measure of physical function performance in preschoolers. | Takahiro Ikeda Osamu Aoyagi | 2015 | Journal of Sports Science2015，3，1： | 0 |
| 11 | Experimental and statistical investigation of a new concrete-composite beam with encased polymer tube wrapped by FRP显示文摘A new concrete-composite beam with high mechanical performances to weight ratio is developed in this study. The proposed design technique consists to embed a cylindrical polymer tube wrapped by a GFRP Jacket in the mechanically ineffective concrete tensile zone. An experimental investigation is carried out on composite beams under bending loads until failure to evaluate the flexural capacity and the corresponding failure mechanisms. Based on the experimental results, statistical and preliminary reliability analyses using the FORM method are performed to assess the safety margin of the new beam. The confrontation between test and simulation results shows a satisfactory agreement, and represents a promising revelation regarding the improvement in terms of strength and ductility of such design compared to conventional reinforced concrete beams with traditional one. | Abdelmadjid SI SALEM Souad AIT TALEB Kamal AIT TAHAR | 2015 | Frontiers of Structural and Civil Engineering2015，9，2： | 0 |
| 12 | The optimal design for hypothesis test and its application in genetic linkage analysis显示文摘This paper proposes a class of linear models with inequable variance, based on background in genetic linkage analysis, and considers the optimal design problem for the hypothesis test of the parameters in such models. To assess a design for the test, a frame of decision theory is established. Under this frame, an admissible minimax design is obtained. It is shown to be not only admissible and minimax in genetic linkage analysis, but best among a reasonable subclass of designs. The power of the test in genetic linkage analysis is substantially improved by using this optimal design. | 谢民育 李照海 | 2003 | Science China Mathematics2003，46，6： | 0 |
| 13 | Study on the groundwater exploitation test in the Yellow River lower reaches——Acase studyon the north suburb waterworks of Zhengzhou,China显示文摘This paper presents the studies on groundwater resources potential of the Yellow River (YR) terrace in Zhengzhou area, China. The main aim of the research was to resolve water shortage problems induced by recent but frequent drying ups of the YR in its lower reaches. Geologic explorations and grouped-pumping tests were conducted in the area. Based on collected data a groundwater flow net was established. The buried depth of groundwater level and water bearing potential of the aquifers were evaluated. Conventional method was used to determine recharge of the groundwater by lateral infiltration of the YR in pumping patterns. The results show that the study region has a high water bearing potential and offers conditions for the construction of large water works. However, only limited recharge by lateral infiltration from the river is available when developing large scale groundwater exploitation in the riverside of the YR. Environmental impacts induced by embankment stability of the Great dyke of the YR could be minimized or eliminated by appropriate engineering methods. | Gnansounou Raoul | 2004 | Science China(Technological Sciences)2004，47，z1： | 0 |
| 14 | Research Progress on Diagnosis Methods for Fungal Infection显示文摘In recent years, owing to abuse of antibiotics, extensive use of antitumor drugs and immunosuppressive agents and other reasons, an increasing number of people suffered from fungal infection. In this situation, researchers proposed new diagnosis methods,such as G test, galactomannan (GM) test, and polymerase chain reaction (PCR). G test is simple, quick, and highly sensitive and can detect multiple fungi; however, it cannot distinguish fungal types and may result in false positive and false negative results. GM test is less time consuming and feature highly positive detection rates but can simply be used in inspection of invasive aspergillosis. However, optimal positive critical values of GM test remain controversial. PCR is currently one of the fastest methods but is not formally used in clinical practice because of its lack of standardized operation and evaluation criteria.This study reviews the above three methods with the aim of discovering and summarizing their advantages and disadvantages to facilitate research and development of new diagnosis methods. | Hua Feng | 2015 | 国际感染病学(电子版)2015，4，4： | 0 |
| 15 | A New Method for Forecasting the Life Test Data of Mechanical Products显示文摘The model forforecasting the test data on mechanical products is established in the application of the grey system theories. A new formula of the background value is introduced into the model. The result of an example shows the method can reduce test expense and enhance the precision of forecasting. | ZHANG Huai-liang, TAN Guanjun, QIU Xian-yan College of Mechanical and Electrical Engineering Central South University Changsha 410083, P R. China | 2001 | International Journal of Plant Engineering and Management2001，6，2： | 0 |
| 16 | A Listening Test of Controlled-Productive Ability显示文摘The purpose of the study is to estimate a new testing method of evaluating the student's ability of Listening Comprehension. The problem to be addressed is whether there is evidence to show that the method can discriminate between the testees, separating the above average students from the average and the below-average studentsThus, the controlled-productive listening test will be' found to be reliable, valid (in that the test distinguished between different proficiency students )and practical. | 马静 | 2001 | Journal of Donghua University(English Edition)2001，18，2： | 0 |
| 17 | 内胆式压力密封试验装置设计与开发(英文)显示文摘The large-scale product has a big cylinder and the pressure-bearing capacity is also high. In the sealingtest, the water is filled in it to have the pressure test. But due to the over high pressure, the experiment tends todestroy the cylinder and the cover to cause the failure of the sealing and the waste of the cylinder and water. Sothis paper is to analyze how to add the small combined cylinder within the product cylinder. The water is filled be-tween the small cylinder and the product cylinder and the pressure on the cover is reduced during the sealing ex-periment. | Ya-jun ZHANG Hong-liang QIU | 2016 | 机床与液压2016，44，6： | 0 |
| 18 | Water content distribution in the surface layer of Maoping slope显示文摘The water content distribution in the surface layer of Maoping slope has been studied by testing the water content at 31 control sites. The water content profiles at these sites have also been determined. The water content distributions at different segments have been obtained by using the Kriging method of geostatistics. By comparing the water content distributions with the landform of the slope, it was shown that the water content is closely dependent on the landform of the slope. The water content distribution in the surface layer provided a fundamental basis for landslide predication and treatment. | LIU Yuewu CHEN Huixin LIU Qingquan GONG Xin ZHANG Dawei LI Lianxiang | 2005 | Science China(Technological Sciences)2005，48，z1： | 0 |
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