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Fei LI,Suocheng DONG,Fujia LI,Libiao YANG
《环境科学与工程前沿(英文)》 2016年 第10卷 第2期 页码 276-287 doi: 10.1007/s11783-014-0700-y
Hongtao WANG, Huayong WU
《环境科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 112-128 doi: 10.1007/s11783-008-0067-z
关键词: solution library contaminant transport analytical solution dispersion and advection porous media type curve Green's function method (GFM)
Learning curve of totally thoracoscopic pulmonary segmentectomy
Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen
《医学前沿(英文)》 2018年 第12卷 第5期 页码 586-592 doi: 10.1007/s11684-017-0566-z
Totally thoracoscopic pulmonary segmentectomy (TTPS) is a feasible and safe technique that requires advanced thoracoscopic skills and knowledge of pulmonary anatomy. However, data describing the learning curve of TTPS have yet to be obtained. In this study, 128 patients who underwent TTPS between September 2010 and December 2013 were retrospectively analyzed to evaluate the learning curve and were divided chronologically into three phases, namely, ascending phase (A), plateau phase (B), and descending phase (C), through cumulative summation (CUSUM) for operative time (OT). Phases A, B, and C comprised 39, 33, and 56 cases, respectively. OT and blood loss decreased significantly from phases A to C (P <0.01), and the frequency of intraoperative bronchoscopy for target bronchus identification decreased gradually (A, 8/39; B, 4/33; C, 3/56; P = 0.06). No significant differences were observed in demographic factors, conversion, complications, hospital stay, and retrieved lymph nodes among the three phases. Surgical outcomes and techniques improved with experience and volume. CUSUMOT indicated that the learning curve of TTPS should be more than 72 cases.
Numerical investigation of circle defining curve for two-dimensional problem with general boundaries
Chung Nguyen VAN
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 92-102 doi: 10.1007/s11709-018-0472-8
关键词: exact geometry circular defining curve general boundaries SBFEM
New practice in semaglutide on type-2 diabetes and obesity: clinical evidence and expectation
《医学前沿(英文)》 2022年 第16卷 第1期 页码 17-24 doi: 10.1007/s11684-021-0873-2
陈志祥
《中国工程科学》 2007年 第9卷 第7期 页码 82-88
学习曲线是一种通过生产者行为学习与经验积累而得到改进的生产产出的特征函数,利用学习曲线可以科学地制定成本计划,改善作业计划、劳动定额与劳力规划,质量改善等。对国际上的研究文献、学习曲线的表现形式及其特点进行分析,探讨了几个新的应用动向。
Research on physical shape preserving curve reconstruction
TANG Kelun, ZHANG Xiangwei, CHENG Siyuan, XIONG Hanwei, ZHANG Hong
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 305-309 doi: 10.1007/s11465-007-0054-2
关键词: information CMM Numerical simulation effective coordinate measuring
Interpolation of a spline developable surface between a curve and two rulings
Alicia CANTÓN,Leonardo FERNÁNDEZ-JAMBRINA
《信息与电子工程前沿(英文)》 2015年 第16卷 第3期 页码 173-190 doi: 10.1631/FITEE.14a0210
Principle and curve of planetary indexing cam mechanisms
LIU Ming-tao, ZHANG Ce, YANG Yu-hu
《机械工程前沿(英文)》 2006年 第1卷 第4期 页码 475-478 doi: 10.1007/s11465-006-0063-6
关键词: continuity planetary average transmission symmetry intermittent
Personalized medicine of type 2 diabetes
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《医学前沿(英文)》 2013年 第7卷 第1期 页码 1-3 doi: 10.1007/s11684-013-0241-y
S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 542-556 doi: 10.1007/s11709-018-0496-0
关键词: piezoelectricity impedance curve mode shapes inverse problem flaw detection curve shifting
Immunological and virological characteristics of human immunodeficiency virus type 1 superinfection:
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《医学前沿(英文)》 2017年 第11卷 第4期 页码 480-489 doi: 10.1007/s11684-017-0594-8
Superinfection is frequently detected among individuals infected by human immunodeficiency virus type I (HIV-1). Superinfection occurs at similar frequencies at acute and chronic infection stages but less frequently than primary infection. This observation indicates that the immune responses elicited by natural HIV-1 infection may play a role in curb of superinfection; however, these responses are not sufficiently strong to completely prevent superinfection. Thus, a successful HIV-1 vaccine likely needs to induce more potent and broader immune responses than those elicited by primary infection. On the other hand, potent and broad neutralization responses are more often detected after superinfection than during monoinfection. This suggests that broadly neutralizing antibodies are more likely induced by sequential immunization of multiple different immunogens than with only one form of envelope glycoprotein immunogens. Understanding why the protection from superinfection by immunity induced by primary infection is insufficient and if superinfection can lead to cross-reactive immune responses will be highly informative for HIV-1 vaccine design.
关键词: human immunodeficiency virus type I superinfection incidence immune response
Metabolomics in human type 2 diabetes research
null
《医学前沿(英文)》 2013年 第7卷 第1期 页码 4-13 doi: 10.1007/s11684-013-0248-4
The high prevalence of diabetes and diabetic complications has caused a huge burden on the modern society. Although scientific advances have led to effective strategies for preventing and treating diabetes over the past several decades, little progress has been made toward curing the disease or even getting it under control, from a public health and overall societal standpoint. There is still a lack of reliable biomarkers indicative of metabolic alterations associated with diabetes and different drug responses, highlighting the need for the development of early diagnostic and prognostic markers for diabetes and diabetic complications. The emergence of metabolomics has allowed researchers to systemically measure the small molecule metabolites, which are sensitive to the changes of both environmental and genetic factors and therefore, could be regarded as the link between genotypes and phenotypes. During the last decade, the progression made in metabolomics has provided insightful information on disease development and disease onset prediction. Recent studies using metabolomics approach coupled with statistical tools to predict incident diabetes revealed a number of metabolites that are significantly altered, including branched-chain and aromatic amino acids, such as isoleucine, leucine, valine, tyrosine and phenylalanine, as diagnostic or highly-significant predictors of future diabetes. This review summarizes the current findings of metabolomic studies in human investigations with the most common form of diabetes, type 2 diabetes.
关键词: metabolomics type 2 diabetes metabolic pathway mass spectrometry nuclear magnetic resonance (NMR)
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 1071-1071 doi: 10.1007/s11709-021-0736-6
标题 作者 时间 类型 操作
Is there an inverted U-shaped curve?Empirical analysis of the Environmental Kuznets Curve in agrochemicals
Fei LI,Suocheng DONG,Fujia LI,Libiao YANG
期刊论文
Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media: A library
Hongtao WANG, Huayong WU
期刊论文
Learning curve of totally thoracoscopic pulmonary segmentectomy
Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen
期刊论文
Numerical investigation of circle defining curve for two-dimensional problem with general boundaries
Chung Nguyen VAN
期刊论文
Research on physical shape preserving curve reconstruction
TANG Kelun, ZHANG Xiangwei, CHENG Siyuan, XIONG Hanwei, ZHANG Hong
期刊论文
Interpolation of a spline developable surface between a curve and two rulings
Alicia CANTÓN,Leonardo FERNÁNDEZ-JAMBRINA
期刊论文
Detection of void and metallic inclusion in 2D piezoelectric cantilever beam using impedance measurements
S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG
期刊论文
Immunological and virological characteristics of human immunodeficiency virus type 1 superinfection:
null
期刊论文