维普中文期刊产品整合服务
91篇 您的检索式:作者名="Bohay"
    题名 作者 年代 出处 被引量
1Parameters in wind-wave frequency spectra and their bearings on spectrum forms and growth显示文摘The spectrum variance m0, peak frequency ω0 and peakness factor p are expressed in terms of nondimensional fetch and duration by making use of relations which are derived through comparing and analyzing existing empirical formulas for the growth of significant wave height and period. The main features of spectrum growth as specified by these parameters agree with those of the JONS-WAP experiments. For given wind speed and fetch, the high frequency parts beyond the peaks of shallow water spectra almost coincide with that of the corresponding deep water spectrum, whereas the low frequency parts differ appreciably. The method developed in this paper predicts smaller significant wave height as well as smaller wave period for shallow water spectra in contrast to the theoretical result of Kitaigorodskii ef al, in which the peak frequency, and consequently the significant wave period, remains basically unchanged for different water depths. Spectra are further reduced to a form in which only significant waveWen Shengchang (S. C. Wen), Zhang Dacuo Guo Peifang, and Chen Bohai Institute of Physical Oceanography, Ocean University of Qingdao (formerly, Shandong College of Oceanography), Qingdao, China 1989Acta Oceanologica Sinica1989,8,1:15
2A hybrid model for numerical wave forecasting and its implementation-Ⅰ.The wind wave model显示文摘The authors make an endeavor to explain why a new hybrid wave model is here proposed when several such models have already been in operation and the so- called third generation wave modej is proving attractive. This part of the paper is devoted to the wind wave model. Both deep and shallow water models have been developed, the former being actually a special case of the latter when water depth is great. The deep water model is exceptionally simple in form. Significant wave height is the only prognostic variable. In comparison with the usual methods to compute the energy input and dissipations empirically or by 'tuning', the proposed model has the merit that the effects of all source terms are combined into one term which is computed through empirical growth relations for significant waves, these relations being, relatively speaking, easier and more reliable to obtain than those for the source terms in the spectral energy balance equation. The discrete part of the model and the implementation of theWen Shengchang (S.C. Wen)1, Zhang Dacuo, Chen Bohai and Guo Peifang Institute of Physical Oceanography, Ocean University of Qingdao (Formerly, Shandong College of Oceanography), Qingdao, China 1989Acta Oceanologica Sinica1989,8,1:14
3Improved form of wind wave frequency spectrum显示文摘The lower frequency part of the theoretical wind wave spectrum proposed by the authors (Wen et al. , 1988a, b,c) has been improved and the form of spectrum is appreciably simplified. In addition to the field data collected in the Bohai Sea region and used in the previous papers, those obtained in the Huanghai Sea, the East China Sea and the South China Sea have been employed so that the improved spectra can be verified on a more extensive observational basis. Computed results agree with the observations well. Further comparisons have been made between the proposed spectra and the JONSWAP spectrum. Though the two types of spectrum are close to each other in form, the former shows, as a whole, better agreement with the observation than the latter. By introducing an improved relation between the peak-ness factor and significant wave steepness, the spectrum contains only significant wave height and period as parameters. For spectra given in this form, the computed peak frequencies coincide approximatelyWen Shengchang (S. C. Wen ), Zhang Dacuo, Guo Peifang, Wang Wei, Chen Bohai and Tai Weitao Institute of Physical Oceanography, Ocean University of Qingdao, China 1989Acta Oceanologica Sinica1989,8,4:10
4The equilibrium range of wind wave frequency spectrum显示文摘-Theoretical form of equilibrium range is given on the basis of the wind wave frequency spectra proposed by Wenel al. (1988a,b,c, 1989a,b). The effects of peakness factor and water depth are discussed. In the case of deep water the e-quilibrium range is reduced to the form first proposed by Toba (1973) and the coefficient of the formula is shown to be the function of nondimensional fetch or peak frequency. Results of the present paper have been verified through field data.Wen Shengchang (S. C. Wen) , Zhang Dacuo, Chen Bohai and Guo Peifang Institute of Physical Oceanography, Ocean University of Qingdao, Qingdao, China 1990Acta Oceanologica Sinica1990,9,1:4
5Research on Horizontal Vibration of Heavy-Weight Drill Pipes in Directional Drilling显示文摘The mode of load and deformation of directional drilling string and the expression of trigonometric series of deflection equation are established by means of elastic deformation energy and of the vertical and horizontal bending. A calculation formula for natural frequency of horizontal resonance and rotational speed is derived based on the calculation method by Ritz, with which analysis is made for the cause and affecting factors of the excessive abrasion of heavy-weight drill pipe in high-angle holes so as to provide reference and basis for rational selection of drilling parameters and drilling tools in the future high-angle directional drilling.Jiang Wei Wang Lan Engineer, Drilling Department of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin Engineer, Well Testing Company of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin 1992China Ocean Engineering1992,7,4:3
6A hybrid model for numerical wave forecasting and its implementation-Ⅱ .The discrete part and implementation of the model显示文摘In the first part of the present paper we have explained why we manage to formulate another wave prediction model when so many of them, including the so-called third generation model, have already been in use. The wind-wave part of the proposed model has also been given. Now we proceed to discuss the swell part,the implementation of the model as a prediction method,mumerical experiments done with ideal wind fields and hindcasts made in the Bohai Sea,in the neighboring seas adjacent to China and in the Northwest Pacific.Zhang Dacuo, Wu Zengmao, Jiang Decai, Wang Wei, Chen Bohai, Tai Weitao, Wen Shengchang,Xu Qichun and Guo Peifang 1992Acta Oceanologica Sinica1992,11,2:3
7The strain amplitude-controlled cyclic fatigue behavior of Al_2O_3 fiber reinforced Al-Si alloy composite at elevated temperaturesGuohua Zhang a,c,Bingchao Li b,Jianxin Zhang b,Wei Cai a a School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China b School of Materials Science and Engineering,Shandong University,Jinan 250061,China c Shandong Binzhou Bohai Piston Co.,Ltd,Binzhou 256602,China 2012Progress in Natural Science:Materials International2012,22,2:2
8Protein array of Coxiella burnetii probed with Q fever sera显示文摘Coxiella burnetii is the etiological agent of Q fever.To identify its major seroreactive proteins,a subgenomic protein array was developed.A total of 101 assumed virulence-associated recombinant proteins of C.burnetii were probed with sera from mice experimentally infected with C.burnetii and sera from Q fever patients.Sixteen proteins were recognized as major seroreactive antigens by the mouse sera.Seven of these 16 proteins reacted positively with at least 45% of Q fever patient sera.Notably,HspB had the highest fluorescence intensity value and positive frequency of all the proteins on the array when probed with both Q fever patient sera and mouse sera.These results suggest that these seven major seroreactive proteins,particularly HspB,are potential serodiagnostic and subunit vaccine antigens of Q fever.WANG XiLe XIONG XiaoLu GRAVES Stephen STENOS John WEN BoHai 2013Science China(Life Sciences)2013,56,5:2
9Unique cyclic deformation behavior of a heavily alloyed Al-Si piston alloy at different temperaturesGuohua Zhang a,c,Bingchao Li b,Jianxin Zhang b,Zengjian Feng c,Zuoshan Wei c,Wei Cai a a School of Materials Science and Engineering,Harbin Institute of Technology,92 West Dazhi Street,P.O.Box 405,Harbin 150001,China b School of Materials Science and Engineering,Shandong University,17923 Jingshi Road,Jinan 250061,China c Shandong Binzhou Bohai Piston Co.,Ltd,569 Bohai Ershiyi Road,Binzhou 256602,China 2012Progress in Natural Science:Materials International2012,22,5:2
10Protective immunity against Rickettsia heilongjiangensis in a C3H/HeN mouse model mediated by outer membrane protein B-pulsed dendritic cells显示文摘Rickettsia heilongjiangensis is an obligate intracellular bacterium that causes Far-Eastern tick-borne spotted fever. Outer membrane protein B(Omp B) is an important surface protein antigen of rickettsiae. In the present study, the omp B gene of R. heilongjiangensis was divided into four fragments, resulting in four recombinant proteins(OmpB-p1, Omp B-p2, Omp B-p3, and Omp B-p4). Each Omp B was used in vitro to stimulate murine bone marrow-derived dendritic cells(BMDCs) of C3H/He N mice, and the Omp B-pulsed BMDCs were transferred to naive C3H/He N mice. On day 14 post-transfer of BMDCs, the mice were challenged with R. heilongjiangensis and the rickettsial loads in the mice were quantitatively determined on day 7 post-challenge. Mice receiving BMDCs pulsed with Omp B-p2, Omp B-p3, or Omp B-p4 exhibited significantly lower bacterial load compared with mice receiving Omp B-p1-pulsed BMDCs. CD4+ and CD8+ T cells isolated from the spleen of C3H/He N mice receiving BMDCs pulsed with each OmpB were co-cultured with BMDCs pulsed with the respective cognate protein. In flow cytometric analysis, the expression level of CD69 on CD4+ or CD8+ T cells from mice receiving BMDCs pulsed with Omp B-p2, OmpB-p3, or Omp B-p4 was higher than that on cells from mice receiving Omp B-p1-pulsed BMDCs, while the expression level of tumor necrosis factor(TNF)-α on CD8+ T cells and interferon(IFN)-γ on the CD4+ and CD8+ T cells from mice receiving Omp B-p2,-p3, or-p4 was significantly higher than on cells from mice receiving Omp B-p1-pulsed BMDCs. Our results suggest that the protective Omp Bs could activate CD4+ and CD8+ T cells and drive their differentiation toward CD4+ Th1 and CD8+ Tcl cells, respectively, which produce greater amounts of TNF-α and, in particular, IFN-γ, to enhance rickettsicidal activity of host cells.MENG YanFen XIONG XiaoLu QI Yong DUAN ChangSong GONG WenPing JIAO Jun WEN BoHai 2015Science China(Life Sciences)2015,58,3:2
11Changes in chemical composition,structural and functional microbiome during alfalfa(Medicago sativa)ensilage with Lactobacillus plantarum PS-8显示文摘Improving silage production by adding exogenous microorganisms not only maximizes nutrient preservation,but also extends product shelf life.Herein,changes in the quality and quantity of Lactobacillus plantarum PS-8(PS-8)-inoculated alfalfa(Medicago sativa)during silage fermentation were monitored at d 0,7,14,and 28(inoculum dose of PS-8 was 1105 colony forming units[cfu]/g fresh weight;50 kg per bag;10 bags for each time point)by reconstructing metagenomic-assembled genomes(MAG)and Growth Rate InDex(GRiD).Our results showed that the exogenous starter bacterium,PS-8 inoculation,became the most dominating strain by d 7,and possibly played a highly active role throughout the fermentation process.The pH value of the silage decreased greatly,accompanied by the growth of acidproducing microorganisms namely PS-8,which inhibited the growth of harmful microorganisms like molds(4.18 vs.1.42 log cfu/g)and coliforms(4.95 vs.0.66 log most probable number[MPN]/g).The content of neutral detergent fiber(NDF)decreased significantly(41.6%vs.37.6%;dry matter basis).In addition,the abundance and diversity of genes coding microbial carbohydrate-active enzymes(CAZymes)increased significantly and desirably throughout the fermentation,particularly the genes responsible for degrading starch,arabino-xylan,and cellulose.Overall,our results showed that PS-8 was replicating rapidly and consistently during early-and mid-fermentation phases,promoting the growth of beneficial lactic acid bacteria and inhibiting undesirable microbes,ultimately improving the quality of silage.Lijun You Weichen Bao Caiqing Yao Feiyan Zhao Hao Jin Weiqiang Huang Bohai Li Lai-Yu Kwok Wenjun Liu 2022Animal Nutrition2022,,2:2
12Calcaneus fractures:a review article显示文摘Maskill JD Bohay DR Anderson JG 2005Foot Ankle Clin2005,10,3:1
13Treatment of chronic achilles tendon disorders with flexor hallucis longus tendon transfer/augmentation显示文摘Wilcox DK Bohay DR Anderson JG 2000Foot Ankle Int2000,21,12:1
14Calcaneus fractures:a review article显示文摘Maskill JD Bohay DR Anderson JG 2005Foot Ankle Clin(Am)2005,10,3:1
15Calcaneus fractures:a re-view article显示文摘Maskill JD Bohay DR Anderson JG 2005Foot Ankle Clin2005,10,3:1
16Micro-computed tomography of a 500-year-old tooth 显示文摘McErlain DD Chhem PK Bohay RN 2004Can Assoc Radiol J2004,55,:1
17First ray injuries显示文摘Maskill J Anderson J Bohay D 2006Foot Ankle Clin2006,1,:1
18Stage Ⅳ posterior tibial tendon insufficiency:the tilted ankle显示文摘Bohay DR Anderson JG 2003Foot Ankle Clin2003,8,:1
19Research on stress spectrum of steel decks in suspension bridge considering measured traffic flow显示文摘JI Bohai CHEN Donghua MA Lin 2012Journal of Performance of Constructed Facilities2012,26,1:1
20Calaneous fractures: a review article显示文摘Maskill JD Bohay DR Anderson JG 2005Foot Ankle Clin2005,10,3:1
返回顶部 每页显示:
共5页 首页 上一页 第1页 下一页 末页 /5 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费