Results 111 to 120 of about 512,347 (156)

东洞庭湖国家级自然保护区湿地资源评价

, 2011
湿地是介于陆地与水体之间的过渡地带,是陆地上最大的碳储库和陆地生态系统循环的重要组成部分。但是,由于对湿地资源的严重破坏和不合理利用,湿地面积急剧减少。近年来,湿地资源评价已经倍受关注,湿地资源评价为实现湿地资源可持续利用,保持湿地功能持久性提供科学依据。本文通过对湿地生态系统的研究,从生态效益、社会效益、经济效益角度出发,构建东洞庭湖自然保护区湿地资源生态健康和合理利用评价体系,并使用德尔菲法(Delphi method)和层次分析法(AHP)结合PSR模型对东洞庭湖湿地资源的生态健康 ...
江东, 张怀清, 庄大方, 鞠洪波, 王亚欣   +4 more
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[Effectiveness and cost-effectiveness of risk-based topical fluoride intervention on early childhood caries in Jiangnan District, Nanning City]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Jiang Y, Li Y, Zhang Y, Liu F, Li L, Deng S, Qin Y, Yu J, Qiu R.   +8 more
europepmc   +1 more source

生态系统健康研究现状及其定量化研究初探

, 2004
阐述了健康的生态系统定义及其研究瓶颈与途径,健康的生态系统可以活力、组织性和恢复力等定性指标描述和衡量。中尺度生态系统定量化健康评价研究的主要瓶颈是确立健康生态系统标准。生态系统健康评价研究的途径可从生态系统受胁迫压力角度、系统恢复力或系统反作用力角度以及生态系统受到潜在“威胁”预测和健康预防的角度考虑,而系统结构和功能相结合是生态系统健康评价的基础中国科学院知识创新工程方向性项目“中国陆地生态系统评价”(KZCXZ405 ...
张志诚, 宋冬梅, 欧阳华, 孙江华, 肖风劲   +4 more
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[Impact of overweight and obesity on quality of life and body image satisfaction in school-aged children and the mediating effects on academic performance]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhang ZY, Zhang L, Duan XX, Li ZY, Liu HJ, Jiao J, Zhang T, Li Y.   +7 more
europepmc   +1 more source

[Aesthetic outcomes of synthetic mesh in single-axillary approach endoscopic implant-based breast reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lin R, Tan Q, Xie Y, Lü Q.
europepmc   +1 more source

生态经济

, 2009
小流域是黄土高原地理环境与生态系统的基本单元,建立健康的小流域生态系统是该区可持续发展的基础。文章在深入理解小流域生态系统健康概念的基础上,阐述了黄土高原小流域生态系统健康评价体系构建思路与指标选取原则,并将评价体系分解为活力、组织结构、恢复力、生态系统服务功能和人类健康五个要素,建立了适于黄土高原小流域生态系统健康评价的指标体系 ...
赵世伟, 李壁成, 刘德林, 方炫
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[Across-sectional study on the association between steatotic liver disease and its subtypes, cardiovascular health status, and extrahepatic comorbidity]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Guan JB, Yang RX, Yan JJ, Shi YW, He XL, Qin L, Yang Z, Su Q, Fan JG.   +8 more
europepmc   +1 more source

[Expert consensus on clinical pathway for high-conformity total knee arthroplasty through a minimally invasive surgical approach]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Expert Consensus Development Group On Clinical Pathways For High-Conformity Total Knee Arthroplasty Through A Minimally Invasive Surgical Approach, Project Team Of The Application Demonstration Of Laser Additive Manufacturing For High-Conformity Total Knee Arthroplasty A Key Project Under The National Key Research And Development Program Of China For Additive Manufacturing And Laser Manufacturing Fis.   +1 more
europepmc   +1 more source

[Technical specification and consensus on routine oral health examinations for adults]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Health Promotion Professional Committee of China Association for Promotion of Health Science and Technology, Journal of Health Examination and Management Editorial Committee, Sichuan Preventive Medicine Association, Health Management Medicine Professional Committee of Sichuan Medical and Health Care Promotion Institute, Society of Preventive Dentistry, Sichuan Stomatological Association.   +5 more
europepmc   +1 more source

[Predictive value of the pre-injury Barthel index for 1-year postoperative case fatality rate after hip arthroplasty in elderly patients with hip fracture]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhu J, Li X, Weng X, Shao M, Teng J.
europepmc   +1 more source