[Analysis of the disease burden of Burkitt lymphoma in China from 1990 to 2021]. [PDF]
Zhonghua Xue Ye Xue Za ZhiZheng CH +8 more
europepmc +1 more source
PRODUCT LIFE CYCLE FORMAL MODELING BASED ON PRODUCT STRUCTURE
, 2006 在分析产品结构的内涵基础上,提出基于产品结构具有时间、数据和粒度三维的产品全生命周期模型概念和相关术语,全面表达产品全生命周期活动中的产品相关信息。给出模型的节点、节点属性、关系和结构子树的定义,以及节点和节点属性的操作方法。论述操作规则和模型结构子树的构建步骤。示例阐明产品从需求结构子树到回收 ...
尹朝万, 马明旭, 范玉顺
core
[Key epidemiological data and recommended prevention and control measures for primary liver cancer]. [PDF]
Zhonghua Gan Zang Bing Za ZhiCao GW.
europepmc +1 more source
Product lifecycle structural model
, 2006 针对目前产品结构模型存在的表达产品信息不全面、不深入和信息一致性差的问题,在分析现有产品结构模型的内涵基础上,提出了产品全生命周期结构模型的概念和构建方法。分析了结构子树的节点和它们之间的关系,给出了节点操作和节点属性操作的方法与结构子树转换的通用操作步骤,使用扩展的IDEF5图形化建模语言,描述了复制节点、增节点和删节点操作,以及属性赋值、增属性和删属性操作等6种基本操作,论述了不同结构子树间转换的规则。最后 ...
尹朝万, 马明旭, 范玉顺
core
[Early effectiveness of surgical hip dislocation combined with autologous iliac crest bone grafting in treatment of femoral neck fracture nonunion in adolescents]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang J +5 more
europepmc +1 more source
[Joint trajectories and evolution patterns of direct and indirect maternal mortality across 204 countries from 2000 to 2021]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhou Y, Cheng Z, Feng X.
europepmc +1 more source
, 2006 种子萌发行为的受控机制是生殖生态学的重要研究内容。通过对适宜的温周期下,不同贮藏时期果翅对梭梭种子萌发影响的研究。结果表明:梭梭种子在温周期为5℃/25℃,5℃/15℃和15℃/25℃(暗/光=12 h/12h)中均能快速萌发。果翅对秋天新成熟种子的萌发有显著的抑制作用,使种子处于强迫休眠状态;果翅对种子萌发的抑制作用随着贮藏时间的推移逐渐降低,到翌年春天(4月)解除这种抑制作用。果翅对梭梭种子萌发行为的调控作用确保了种子在合适的时间萌发与种群的成功定居 ...
严成, 王习勇, 魏岩
core
[Current status and Joinpoint regression analysis of the burden of musculoskeletal diseases in China from 1990 to 2023]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHu Y +6 more
europepmc +1 more source
[Expert Consensus on Shared Decision-making in the Diagnosis and Treatment of Ground-glass Opacity-featured Lung Adenocarcinoma]. [PDF]
Zhongguo Fei Ai Za ZhiZhao X +4 more
europepmc +1 more source