检索范围:
排序: 展示方式:
null
《医学前沿(英文)》 2017年 第11卷 第4期 页码 590-594 doi: 10.1007/s11684-017-0537-4
Grading of Recommendations Assessment, Development, and Evaluation (GRADE) offers a worldwide approach to guideline development for clinical practice. For the clinical practice of acupuncture therapy, 18 evidence-based guidelines have been developed in China using GRADE. In this study, we review the advantages and limitations of the GRADE approach in the guideline development for acupuncture and moxibustion and propose some solutions to these limitations. Scientific advantages of rating the quality of evidence, outcome-centric direction, overall progression to develop recommendations, and strength of recommendations providing specific clinical guidance are the advantages of GRADE. The limitations of GRADE in the development of guidelines for acupuncture and moxibustion include rating the quality of evidence for ancient literature and literature on famous traditional Chinese medicine experts’ experiences and specific guidelines for formulating recommendations from evidence. In the guideline development for clinical practice with acupuncture and moxibustion, we suggest that a specific method should be explored based on the GRADE approach and the characteristics of acupuncture therapy.
关键词: guideline acupuncture GRADE
Development of combined transitional pavement structure for urban tram track-road grade crossings
《结构与土木工程前沿(英文)》 页码 1199-1210 doi: 10.1007/s11709-023-0949-y
关键词: urban tram track grade crossing combined track-road transitional pavement polyurethane elastic concrete finite element method
null
《医学前沿(英文)》 2017年 第11卷 第2期 页码 223-228 doi: 10.1007/s11684-017-0517-8
The objective of this study is to guide a triage for the management of cervical high-grade squamous intraepithelial lesion (HSIL) patients with positive margin by conization. Clinico-pathological data of HSIL patients with positive margin by conization were retrospectively collected from January 2009 to December 2014. All patients underwent secondary conization or hysterectomy within 6 months. The rate of residual lesion was calculated, and the factors associated with residual lesion were analyzed by univariate and multivariate analyses. Among a total of 119 patients, 56 (47.06%) patients presented residual HSIL in their subsequent surgical specimens, including 4 cases of invasive cervical carcinoma (3 stage IA1 and 1 stage IA2 patients). Univariate analysis showed that patient age>35 years (P=0.005), menopausal period>5 years (P=0.0035), and multiple-quadrant involvement (P=0.001) were significantly correlated with residual disease; however, multivariate analysis revealed that multiple-quadrant involvement (P=0.001; OR, 3.701; 95%CI, 1.496–9.154) was an independent risk factor for residual disease. Nearly half of HSIL patients with positive margin by conization were disease-free in subsequent surgical specimens, and those with multiple positive margins may consider re-conization or re-assessment.
关键词: cervical high-grade squamous intraepithelial lesion conization positive surgical margin hysterectomy
李伟,李强,王平
《中国工程科学》 2011年 第13卷 第1期 页码 56-61
基于概率断裂力学对B级钢货车侧架的圆角细节进行了模拟耐久性试验研究,提出了一种新的通用当量初始缺陷尺寸分布的计算方法,建立了裂纹超越概率模型,从存活概率P, 应力水平σ, 裂纹形成时间t和经济维修极限ae 4个角度评估了结构的损伤度, 并结合实测的应力谱预测了其经济寿命。结果表明,裂纹萌生时间能很好地服从三参数Weibull分布,求得的通用EIFS分布参数通过了K—S检验,拟合效果很好。裂纹超越概率模型可以对结构产生的耐久性损伤进行定量度量,预测的经济寿命随裂纹穿越概率的增加呈现增长的趋势,验证了新的计算方法和概率模型的合理有效性。
Silver-catalyzed bioleaching for raw low-grade copper sulphide ores
Tianlong DENG, Yafei GUO, Mengxia LIAO, Dongchan LI
《化学科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 250-254 doi: 10.1007/s11705-009-0049-0
关键词: green process biohydrometallurgy bioleaching reaction kinetics sulphide ores
邵安林
《中国工程科学》 2014年 第16卷 第2期 页码 68-72
本文以五品联动理论为研究背景,考虑到矿山工程中地质工程、采矿工程、配矿工程、选矿工程和冶炼工程5 个工程是相互联系的串联耦合工程,是矿山企业活动的主体,而与其相对应的地质品位、采出品位、入选品位、精矿品位和入炉品位对于矿山整体经济效益起到关键的控制作用。本文运用并拓展了“质量守恒”原理,利用“矿量守恒”和“金属量守恒”建立了品位经济效益模型,提出了五品联动品位—效益活跃指数,通过实例计算与分析,获得了某铁矿的品位优化数值,为进一步研究矿山企业工程管理模式奠定了基础。
李鹤林,吉玲康,田伟
《中国工程科学》 2010年 第12卷 第5期 页码 84-90
近年来,我国管道企业和相关科研院所联合攻关,取得了一批关键技术成果,这些成果包括:研制了X70,X80钢级高性能管线钢及焊管、管件;突破国际上螺旋缝埋弧焊管的使用禁区,确立了具有中国特色的“大口径高压输送主干线螺旋埋弧焊管与直缝埋弧焊管联合使用”的技术路线;在国内首次研究了高压输气管道动态断裂与止裂问题,采用Battelle双曲线模型预测了西气东输和西气东输二线等管道延性断裂的止裂韧性;在国内首次研究了油气管道基于应变的设计方法,解决了该设计方法及抗大变形管线钢管在强震区和活动断层管段应用的技术难题;解决了高强度焊管的腐蚀控制和应变时效控制等技术。
A D POFALE, S P WANJARI
《结构与土木工程前沿(英文)》 2013年 第7卷 第1期 页码 39-45 doi: 10.1007/s11709-013-0193-y
关键词: bond strength Portland Pozzolane Cement (PPC) concrete Ordinary Portland Cement (OPC) concrete bond between concrete and steel pullout test development length
Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA
《环境科学与工程前沿(英文)》 2013年 第7卷 第2期 页码 281-293 doi: 10.1007/s11783-013-0484-5
关键词: ball mill spillage thermal activation bioleaching copper
马洪琪
《中国工程科学》 2011年 第13卷 第12期 页码 4-8
系统总结了200m级面板坝建设的主要经验与教训,对4座300m级面板坝典型工程进行了分析,提出了300m级面板坝需要研究的基础科学和关键技术问题。
梁骏吾
《中国工程科学》 2000年 第2卷 第6期 页码 33-35
文章简要评述了世界以及中国的电子级多晶硅的生产能力和市场需求。在2000年和2010年中国对多晶硅的需求分别是736 t/a和1304 t/a。但近几年中国的多晶硅生产仅达到80 t/a,所以在中国建设一座年产1000 t电子级多晶硅的工厂是很合理的。然而由最新统计数据可知,自1997年以来,世界多晶硅生产能力连年均超过市场需求,而且在最近的将来,这一趋势将会继续。为了占领国内多晶硅市场,未来的多晶硅工厂将面临挑战,产品质量和生产成本是应当考虑的最重要指标。为了占领国内市场,在保证多晶硅产品纯度的前提下,生产成本只能略微超过20美元/kg。
Ascalable and efficient IPv4 address sharing approach in IPv6 transition scenarios
Guo-liang HAN,Cong-xiao BAO,Xing LI
《信息与电子工程前沿(英文)》 2015年 第16卷 第8期 页码 634-645 doi: 10.1631/FITEE.1500022
关键词: IPv6 transition Carrier-grade NAT (CGN) A+P Address sharing Dynamic switching
标题 作者 时间 类型 操作
Application of Grading of Recommendations Assessment, Development, and Evaluation (GRADE) to the guideline
null
期刊论文
Development of combined transitional pavement structure for urban tram track-road grade crossings
期刊论文
Triage for management of cervical high-grade squamous intraepithelial lesion patients with positive margin
null
期刊论文
Silver-catalyzed bioleaching for raw low-grade copper sulphide ores
Tianlong DENG, Yafei GUO, Mengxia LIAO, Dongchan LI
期刊论文
Study of bond strength between various grade of Ordinary Portland Cement (OPC) and Portland Pozzolane
A D POFALE, S P WANJARI
期刊论文
Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill
Sandeep PANDA, Nilotpala PRADHAN, Umaballav MOHAPATRA, Sandeep K. PANDA, Swagat S. RATH, Danda S. RAO, Bansi D. NAYAK, Lala B. SUKLA, Barada K. MISHRA
期刊论文