|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | COMPUTERIZED SIMULATION AND EXPERIMENTAL RESEARCH ON SOFT-SWITCHING ARC WELDING INVERTER POWER SOURCE显示文摘Based on the existing component models in the Pspice software package, a combined model for Insulat- ed the Bipolar Transistor (IGBT) is established, in which a non - linear is introduced to represent the parasitic capacitance. Using this model, computerized simulation is conducted for the FB - ZVZCS - PWM soft - ewitching converter,the switching and energy-transferring characteristics of the components are analyzed.The simulation results are testified by experiments.It is proved that by abopting appropriate models,computerized simulation becomes an effective tool for investigation of arc welding inverter power source. | S. J. Chen S. Y. Yin L. Feng and L. Y. Li( 1) School of Materials Science and Engineering, Beijing Polytechnic University, Beijing 100022, China 2)National Key Laboratory of Advanced Welding Production Technology, HIT, Harbin 150001, China) | 2000 | Acta Metallurgica Sinica(English Letters)2000,13,1: | 24 |
| 2 | Current surgical strategies for total arthroplasty in valgus knee显示文摘The majority of orthopaedic surgeons even currentlyagree that primary total arthroplasty in valgus knees with a deformity of more than ten degrees may prove challenging. The unique sets of bone and soft tissue abnormalities that must be addressed at the time of the operation make accurate axis restoration, component orientation and joint stability attainment a difficult task. Understanding the specific pathologic anatomic changes associated with the valgus knee is a prerequisite so as to select the proper surgical method, to optimize component position and restore soft-tissue balance. The purpose of this article is to review the valgus knee anatomical variations, to assess the best pre-operative planning and to evaluate how to choose the grade of constraint of the implant. It will also be underlying the up-to-date main approaches and surgical techniques be proposed in the English literature both for bone cuts and soft tissue management of valgus knees. | Dimitrios Nikolopoulos Ioannis Michos George Safos Petros Safos | 2015 | World Journal of Orthopedics2015,6,6: | 20 |
| 3 | Evolving concepts in bone infection: redefining “biofilm”,“acute vs. chronic osteomyelitis”, “the immune proteome” and “local antibiotic therapy”显示文摘Osteomyelitis is a devastating disease caused by microbial infection of bone. While the frequency of infection following elective orthopedic surgery is low, rates of reinfection are disturbingly high. Staphylococcus aureus is responsible for the majority of chronic osteomyelitis cases and is often considered to be incurable due to bacterial persistence deep within bone. Unfortunately, there is no consensus on clinical classifications of osteomyelitis and the ensuing treatment algorithm. Given the high patient morbidity,mortality, and economic burden caused by osteomyelitis, it is important to elucidate mechanisms of bone infection to inform novel strategies for prevention and curative treatment. Recent discoveries in this field have identified three distinct reservoirs of bacterial biofilm including: Staphylococcal abscess communities in the local soft tissue and bone marrow, glycocalyx formation on implant hardware and necrotic tissue, and colonization of the osteocyte-lacuno canalicular network(OLCN) of cortical bone. In contrast, S.aureus intracellular persistence in bone cells has not been substantiated in vivo, which challenges this mode of chronic osteomyelitis. There have also been major advances in our understanding of the immune proteome against S. aureus, from clinical studies of serum antibodies and media enriched for newly synthesized antibodies(MENSA), which may provide new opportunities for osteomyelitis diagnosis, prognosis, and vaccine development. Finally, novel therapies such as antimicrobial implant coatings and antibiotic impregnated 3D-printed scaffolds represent promising strategies for preventing and managing this devastating disease. Here, we review these recent advances and highlight translational opportunities towards a cure. | Elysia A. Masters Ryan P. Trombetta Karen L. de Mesy Bentley Brendan F Boyce Ann Lindley Gill Steven R. Gill Kohei Nishitani Masahiro Ishikawa Yugo Morita Hiromu Ito Sheila N. Bello-Irizarry Mark Ninomiya James D. Brodell Jr. Charles C. Lee Stephanie P. Hao Irvin Oh Chao Xie Hani A. Awad John L. Daiss John R. Owen Stephen L. Kates Edward M. Schwarz Gowrishankar Muthukrishnan | 2019 | Bone Research2019,7,3: | 19 |
| 4 | Estimation of Undrained Bearing Capacity for Offshore Soft Foundations with Cyclic Load显示文摘The degradation strength of soils under cyclic loading is studied and a method for deter-mining the cyclic degradation strength with cyclic triaxial tests is given in the paper.Furthermore,a dum-my static method for estimating the undrained bearing capacity for offshore soft foundation under waveloads is developed.It can consider the effect of the difference of cyclic stress for different parts of the foun-dation on both the degradation strength of the foundation soil and the bearing capacity so that the esti-mated result can better reflect the real condition of foundation under cyclic loading.The method can be ap-plied to plane and space problem. | Wang, JH Liu, YF Xing, Y Di, HM | 1998 | China Ocean Engineering1998,13,2: | 18 |
| 5 | Underwater Explosion Treatment of Marine Soft Foundation显示文摘The consolidation of soft foundation is a problem that commonly appears in harbor construction engineering on muddy coast. Introduced in this paper is the experimental study on underwater explosion treatment of soft foundation, including the regulations of explosion hollow development and medium movement, the law of similarity of densification and settlement of filled stone mass by shock wave pressure and explosion energy and their construction technologies, etc. A number of projects have been completed by applying this new technique, and the technique itself has been proved practicable. | Zheng, Zhemin Yang, Zhengsheng Jin, Liu | 1991 | China Ocean Engineering1991,6,2: | 16 |
| 6 | Incidence, distribution of histological subtypes and primary sites of soft tissue sarcoma in China显示文摘Objective: Soft tissue sarcomas(STSs) are rare malignancies deriving from mesenchyme.In this study, we reported the epidemiology of STS in China using population-based cancer registry data.Methods: In 2017, qualified data from 339 cancer registries were included in the national database.All STS cases were retrieved based on the morphological and topographical codes of International Classification of Diseases for Oncology, and were categorized into different histological subtypes and primary sites accordingly.Nationwide new STS cases were estimated using incidence rate of STS and the national population, and were reported for gastrointestinal stromal tumor(GIST) and STSs other than GIST separately by sex and region.Distribution of histological subtypes and primary sites of STS were calculated, as well as primary sites of GIST.Results: Approximately 39,900 new STS cases occurred nationwide in China in 2014, accounting for 1.05% of overall cancer incidence.The crude incidence rate was 2.91/100,000 and generally increased with age.An overall female predilection was found.GIST was the most common histological subtype, followed by nerve sheath tumor and malignant peripheral nerve sheath tumor,leiomyosarcoma, liposarcoma, and fibrosarcoma.About 67.5% of GIST occurred in stomach while 1.4% were recorded outside the gastrointestinal tract.Connective, subcutaneous and other soft tissues were the most common primary site, of which extremities were the major subsite.Conclusions: The burden of STS is not serious in China relatively.However, due to their histological and topographical complexity, STSs should not be unnoticed, and more basic and clinical studies should focus on STSs. | Zhixun Yang Rongshou Zheng Siwei Zhang Hongmei Zeng He Li Wanqing Chen | 2019 | Cancer Biology & Medicine2019,16,3: | 16 |
| 7 | 腹的洞的主要恶意的含纤维的 histiocytoma : CT 调查结果和病理学的关联显示文摘 AIM:To study computed tomography(CT)features of abdominal malignant fibrous histiocytoma(MFH)in various rare locations.METHODS:We retroprospectively identified cases of MFH involving the abdominal cavity.Particular attention was paid to details regarding imaging features and histological types.RESULTS:The study population consisted of seven men and one woman,with a mean age of 52.5 years.Seven patients had some physical symptoms,while one was incidentally detected.The sites of origin were liver(n=3),greater omentum(n=1),superior mesentery(n=1),ileum(n=1),right psoas muscle(n=1)and right kidney(n=1).With the exception of the ileum lesion,all were of huge size.The contour of the lesions was more or less clear.Foci of necrosis were present in six lesions(n=6).On plain CT scan,all lesions were hypo to iso dense.The lesion in the greater omentum was cystic.One lesion(n=1)showed significant enhancement and the cystic lesion showed mild peripheral enhancement.An abundance of blood vessels surrounding the mass was seen in two lesions(n=2)and both were of the inflammatory variety.Pathological examination revealed storiform-pleomorphic variety(n=4),inflammatory variety(n=3)and myxoid variety(n=1).Two of the patients with inflammatory MFH had a clinical presentation of fever and one was afebrile,however,blood investigations in all three showed leukocytosis.CONCLUSION:Primary MFHs of the abdominal viscera and gastrointestinal tract are generally huge soft tissue masses containing areas of low attenuation and mild to moderate contrast enhancement. | Bivek Karki | 2012 | World Journal of Radiology2012,4,4: | 15 |
| 8 | 曲安奈德鼻喷雾剂联合桉柠蒎肠溶胶囊治疗分泌性中耳炎显示文摘分泌性中耳炎(secretory otitis media,SOM)主要以传导性聋及鼓室积液为主要特征的中耳炎症,儿童和成人发生率均较高,治疗方法 主要为药物和鼓膜穿刺、切开置管术等,如何尽量减少有创治疗一直是临床医师探讨的问题。本研究用曲安奈德鼻喷雾剂(triamcinolone acetonide nasal spray,TANS)喷鼻加桉柠蒎肠溶胶囊(eucalyptol,limonene and pinene enteric soft capsules,ELPESC)治疗SOM取得了较好的临床治疗效果, | 孟东蕊 | 2012 | 中国耳鼻咽喉头颈外科2012,19,7: | 13 |
| 9 | 软岩巷道变形特征与分区域分阶段控制技术数值模拟研究显示文摘以某矿南翼回风大巷为例,分析了软岩巷道变形破坏原因,并结合数值模拟软件FLAC4.0分析了该巷道围岩变形发展规律:肩角较顶板、两帮和底板变形破坏的区域更大,并且随时间推移巷道浅部围岩的变形不断增大,即空间上的非均匀性以及时间上的持久延续性.针对软岩巷道的变形特性,提出了分区域分阶段动态控制技术,包括:锚网喷支护、注浆加固以及重点部位加强支护.现场的工业性实验观测结果表明,该巷道围岩变形逐步趋于稳定,变形量得到了有效控制,可以满足使用的要求. | 刘明杰 任松杰 李学华 | 2010 | 湖南科技大学学报(自然科学版)2010,25,3: | 12 |
| 10 | SF-36在慢性软组织疼痛患者中的信度和效度初步评价显示文摘目的 探讨中文版36条健康状况简明调查问卷(SF-36)在慢性软组织疼痛患者健康生存质量评价中的信度和效度.方法 采用中文版SF-36和医院结局疼痛用量表(MOSPM),同时对210例慢性软组织疼痛患者进行问卷调查,以后者为效度标准,其中有57例(27.1%)患者进行了二次测评.收集资料输入SPSS软件包,采用Spearman相关分析,进行内部一致性、复测信度和效标效度的评价.结果 SF-36量表具有良好的内部一致性和重测信度,8个维度的Cronbach's α系数均>0.7,重测信度的组内相关系数除SF为0.336(P<0.05)外,其他7个维度均在0.44~0.66之间(P<0.01);在效度评价中,SF-36的8个维度与MOSPM的大部分条目及总分均显著相关,相关系数在-0.145~-0.630之间(P<0.05,P<0.01).结论 SF-36在慢性软组织疼痛患者人群健康相关生存质量评价中应用,具有较好的信度和效度. | 王小兵 骆艳丽 李春波 韩国栋 马余鸿 石莉君 | 2009 | 中华物理医学与康复杂志2009,31,1: | 11 |
| 11 | Effects of planting methods on yield and quality of different types of japonica rice in northern Jiangsu plain, China显示文摘Mechanical transplanting with carpet seedlings(MC) and mechanical direct seeding(MD) are newly developed planting methods, which increase in popularity and planted area each year. Knowing the difference for yield and rice quality under different planting methods is of great importance for the development of high quality and yield cultivation techniques under mechanical conditions. Therefore, three kinds of japonica rice including hybrid japonica rice, inbreed japonica rice, and soft rice were adopted as materials. And the differences in the quality of processing, appearance, cooking and eating quality, nutrition, and the rapid viscosity analyzer(RVA) profile were studied to reveal the effects of planting methods on yield and quality of different types of japonica rice. Results showed that the milled rice and head rice rates under MC was significantly higher than those under MD, and the processing quality of inbreed japonica rice was the most stable. Compared with MC, length/width ratio of rice under MD was significantly increased, and chalkiness rate, size, and degree were significantly decreased. The protein content under MD was lower than that under MC. MC showed higher peak viscosity and breakdown value than MD. The taste value was the greatest for soft rice, followed by inbreed japonica rice, and then by japonica hybrid rice, with no significant differences resulting from planting methods. Compared with MC, MD significantly improved the appearance quality, though processing quality and nutritional quality were decreased. And there was no significant difference in cooking and eating quality between MC and MD. Under different planting methods, the appearance quality of inbreed japonica rice changed the most and the processing quality was the most stable. The nutritional, cooking and eating quality of soft rice changed the least. Therefore, according to the different planting methods and market needs, selecting the appropriate rice varieties can reduce the risks in rice production and achieve good rice quality. | BIAN Jin-long XU Fang-fu HAN Chao QIU Shi GE Jia-lin XU Jing ZHANG Hong-cheng WEI Hai-yan | 2018 | Journal of Integrative Agriculture2018,17,12: | 11 |
| 12 | Calibration of soft sensor by using Just-in-time modeling and Ada Boost learning method显示文摘Soft sensor is an efficacious solution to predict the hard-to-measure target variable by using the process variables.In practical application scenarios, however, the feedback cycle of target variable is usually larger than that of the process variables, which causes the deficiency of prediction errors. Consequently soft sensor cannot be calibrated timely and deteriorates. We proposed a soft sensor calibration method by using Just-in-time modeling and Ada Boost learning method. A moving window consisting of a primary part and a secondary part is constructed.The primary part is made of history data from certain number of constant feedback cycles of target variable and the secondary part includes some coarse target values estimated initially by Just-in-time modeling during the latest feedback cycle of target variable. The data set of the whole moving window is processed by Ada Boost learning method to build an auxiliary estimation model and then target variable values of the latest corresponding feedback cycle are reestimated. Finally the soft sensor model is calibrated by using the reestimated target variable values when the target feedback is unavailable; otherwise using the feedback value. The feasibility and effectiveness of the proposed calibration method is tested and verified through a series of comparative experiments on a pH neutralization facility in our laboratory. | Huan Min Xionglin Luo | 2016 | Chinese Journal of Chemical Engineering2016,24,8: | 11 |
| 13 | Current management of pediatric soft tissue sarcomas显示文摘Pediatric soft tissue sarcomas are a group of malignant neoplasms arising within embryonic mesenchymal tissues during the process of differentiation into muscle, fascia and fat. The tumors have a biphasic peak for age of incidence. Rhabdomyosarcoma(RMS) is diagnosed more frequently in younger children, whereas adult-type non-RMS soft tissue sarcoma is predominately observed in adolescents. The latter group comprises a variety of rare tumors for which diagnosis can be difficult and typically requires special studies, including immunohistochemistry and molecular genetic analysis. Current management for the majority of pediatric sarcomas is based on the data from large multi-institutional trials, which has led to great improvements in outcomes over recent decades. Although surgery remains the mainstay of treatment, the curative aim cannot be achieved without adjuvant treatment. Pre-treatment staging and risk classification are of prime importance in selecting an effective treatment protocol. Tumor resectability, the response to induction chemotherapy, and radiation generally determine the risk-group, and these factors are functions of tumor site, size and biology. Surgery provides the best choice of local control of small resectable tumors in a favorable site. Radiation therapy is added when surgery leaves residual disease or there is evidence of regional spread. Chemotherapy aims to reduce the risk of relapse and improve overall survival. In addition, upfront chemotherapy reduces the aggressiveness of the required surgery and helps preserve organ function in a number of cases. Long-term survival in low-risk sarcomas is feasible, and the intensity of treatment can be reduced. In high-risk sarcoma, current research is allowing more effective disease control. | Surasak Sangkhathat | 2015 | World Journal of Clinical Pediatrics2015,4,4: | 11 |
| 14 | 机器人冲压自动线的生产节拍优化显示文摘本文就工业机器人在冲压自动线中的应用和机器人冲压自动线的特点做了大概介绍,并对其控制软件、硬件架构和机器人的运行节拍做了比较详细的分析。最后,本文基于机器人控制软件介绍了一种系统自我调节节拍的柔性化设计。 | 王明 黄英 王长润 | 2008 | 仪器仪表用户2008,15,6: | 11 |
| 15 | 单目移动拍摄下基于人体部位的行人检测显示文摘在摄像机安装在一个自由移动的平台的环境里,如汽车,检测行人变得非常困难,特别是当行人所处的场景比较复杂时。针对这种应用环境,文中提出了一种coarse-to-fine的行人检测方法。本方法把一个人建模成人体自然部位的组装,所用部位包括头肩(head-shoulder),躯干(torso),腿(leg)。采用绝对值haar-like特征集和Edgelet特征集[1]。在这些特征集上,我们用SoftCascade[2]训练各个部位检测器和全身检测器(full-body)。在本算法中,首先由full-body检测器产生行人候选。然后,基于贝叶斯决策的组合算法进一步确定候选者中的行人。实验结果表明本算法有很好的检测性能,能在杂乱的自然场景中有效的检测行人。 | 田广 戚飞虎 朱文佳 毛欣 陈磐君 | 2006 | 系统仿真学报2006,18,10: | 10 |
| 16 | Study on Repairing Permanent Transportation Roadway in Deep Mining by Bolt-Shotcrete and Mesh Supporting显示文摘The roadway support in many places of Jiulongkou Colliery, Fengfeng Mining Bureau, such as in the Permanent transportation roadway, was failed or locally caved, which seriously affected the colliery’s coal production performance and safety. Based on analysis of supporting objects for roadway repairing, this paper proposes the supporting parameters and condruction technics. The industrial ted of 70m long roadway repairing shows that the proposed parameters and technics of bolt shotcrete and mesh support for roadway repairing are reasouable, bring good technical and economic results for the colliery, and the repairing is successful. | 宋宏伟 鹿守敏 | 1999 | International Journal of Mining Science and Technology1999,20,2: | 10 |
| 17 | Protein-based soft micro-optics fabricated by femtosecond laser direct writing显示文摘In this work,we report a novel soft diffractive micro-optics,called‘microscale kinoform phase-type lens(micro-KPL)’,which is fabricated by femtosecond laser direct writing(FsLDW)using bovine serum albumin(BSA)as building blocks and flexible polydimethylsiloxane(PDMS)slices as substrates.By carefully optimizing various process parameters of FsLDW(e.g.,average laser power density,scanning step,exposure time on a single point and protein concentration),the as-formed protein micro-KPLs exhibit excellent surface quality,well-defined three-dimensional(3D)geometry and distinctive optical properties,even in relatively harsh operation environments(for instance,in strong acid or base).Laser shaping,imaging and other optical performances can be easily achieved.More importantly,micro-KPLs also have unique flexible and stretchable properties as well as good biocompatibility and biodegradability.Therefore,such protein hydrogel-based micro-optics may have great potential applications,such as in flexible and stretchable photonics and optics,soft integrated optical microsystems and bioimplantable devices. | Yun-Lu Sun Wen-Fei Dong Li-Gang Niu Tong Jiang Dong-Xu Liu Lu Zhang Ying-Shuai Wang Qi-Dai Chen Dong-Pyo Kim Hong-Bo Sun | 2014 | Light(Science & Applications)2014,3,1: | 10 |
| 18 | Dynamic assessment method of air target threat based on improved GIFSS显示文摘As the air combat environment becomes more complicated and changeable, accurate threat assessment of air target has a significant impact on air defense operations. This paper proposes an improved generalized intuitionistic fuzzy soft set (GIFSS) method for dynamic assessment of air target threat. Firstly, the threat assessment index is reasonably determined by analyzing the typical characteristics of air targets. Secondly, after the GIFSS at different time is obtained, the index weight is determined by the intuitionistic fuzzy set entropy and the relative entropy theory. Then, the inverse Poisson distribution method is used to determine the weight of time series, and then the time-weighted GIFSS is obtained. Finally, threat assessment of five air targets is carried out by using the improved GIFSS (I-GIFSS) and comparison methods. The validity and superiority of the proposed method are verified by calculation and comparison. | FENG Jinfu ZHANG Qiang HU Junhua LIU An | 2019 | Journal of Systems Engineering and Electronics2019,30,3: | 9 |
| 19 | A Novel Pneumatic Soft Gripper with a Jointed Endoskeleton Structure显示文摘In current research on soft grippers,pneumatically actuated soft grippers are generally fabricated using fully soft materials,which have the advantage of flexibility as well as the disadvantages of a small gripping force and slow response speed.To improve these characteristics,a novel pneumatic soft gripper with a jointed endoskeleton structure(E-Gripper)is developed,in which the muscle actuating function has been separated from the force bearing function.The soft action of an E-Gripper finger is performed by some air chambers surrounded by multilayer rubber embedded in the restraining fiber.The gripping force is borne and transferred by the rigid endoskeleton within the E-Gripper finger Thus,the gripping force and action response speed can be increased while the flexibility is maintained.Through experiments,the bending angle of each finger segment,response time,and gripping force of the E-Gripper have been measured,which provides a basis for designing and controlling the soft gripper The test results have shown that the maximum gripping force of the E-Gripper can be 35 N,which is three times greater than that of a fully soft gripper(FS-Gripper)of the same size.At the maximum charging pressure of 150 kPa,the response time is1.123 s faster than that of the FS-Gripper.The research results indicate that the flexibility of a pneumatic soft gripper is not only maintained in the case of the E-Gripper,but its gripping force is also obviously increased,and the response time is reduced.The E-Gripper thus shows great potential for future development and applications. | Zhaoping Wu Xiaoning Li Zhonghua Guo | 2019 | Chinese Journal of Mechanical Engineering2019,32,5: | 9 |
| 20 | Photoresponsive organogel and organized nanostructures of cholesterol imide derivatives with azobenzene substituent groups | Tifeng Jiao Yujin Wang Fengqing Gao Jingxin Zhou Faming Gao | 2012 | Progress in Natural Science:Materials International2012,22,1: | 9 |