Results 101 to 110 of about 311,793 (149)

和田地区绿洲外围防护林体系的防风阻沙效益

, 2012
通过对２０１０年和２０１１年和田地区策勒县、皮山县、和田县吉亚乡３个绿洲外围靠近沙漠边缘的防护林防风阻沙效益进行野外实地调查及对防护林内小气象站和配套积沙仪定点观测数据分析，发现和田地区绿洲外围防护林体系树种较单一，由于垦荒天然防护林面积在日益缩小，导致新的幼小新疆杨防护林防风阻沙效果不是很理想；在相同的水分灌溉条件下，沙拐枣防护林生长较新疆杨、梭梭、柽柳防护林成活率高，并且生长迅速，需水量少，且疏透度较小，防风阻沙效果更为理想。为有效提高和田地区绿洲外围防护林防护效益，应合理垦荒保护好绿洲 ...
雷加强, 曾凡江, 李生宇, 毛东雷   +3 more
core  

[Trends, predictions, and etiological characteristics of the incidence and mortality of lower respiratory infections among children under 14 years in China from 1990 to 2021]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Liao Y, Lin YY, Li YY, Yang JH.
europepmc   +1 more source

青藏铁路客城区段风沙流特点及沙害防治措施的研究

, 2001
青藏线哈（尔盖）－格（尔木）段位于青藏高原，横穿柴达木沙漠，集沙漠特征与高原气候于一体。不少地段曾因沙害造成行车中断和机车掉道等事故，其中以客城最为突出．在以往相关研究的文献中，确定主风向是以风的频率为主．但在以防止沙子上道为主要目标的铁路防沙中，本文提出的以输沙量为依据所确定的主风向，能为防沙措施提供更为合理的依据．在该段铁路防沙中，采用了竹片栅栏与碎石方格相结合的阻、固措施，其中碎石方格系在铁路防沙中首次使用．经过观测，证实阻沙措施降低了风速；固沙措施增加了地面的粗糙度，大大减少了输沙量 ...
史培军, 鲁春霞, 于云江
core  

[Expert consensus on the diagnosis, treatment, and prevention of neonatal dengue, chikungunya, and Zika virus infections (2025)]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Perinatal Group, Pediatric Branch of the Chinese Medical Doctor Association; Editorial Board, Chinese Journal of Contemporary Pediatrics.   +2 more
europepmc   +1 more source

[Pathogen Profile and Risk Factors for Hospital-Acquired Infection in Stroke Patients]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Xu T, Han B, Zhang H, Shao C, Wang Y, Jiao Y, Zhang G.   +6 more
europepmc   +1 more source

再造壮丽秀美的黄土高原宏大措施之分析

, 1998
江泽民同志在１９９７年８月作了关于治理黄土高原的重要批示，为再造壮丽秀美的祖国山河和治理黄土高原指明了道路。本文根据“提出一个治理黄土高原水土流失的工程规划，争取十五年初见成效，三十年大见成效、为根治黄河作出应有的贡献”的宏大计划，实现“再造一个壮丽秀美的黄土高原”的雄伟目标，并根据黄土高原地区的实际情况，因地制宜提出了“重视水土保持工程措施，广泛应用水土保持林草措施，优化水土保持耕作措施，挖掘掘水保持农业措施”的具体对策 ...
彭珂珊, 谢永生
core  

[A compulsory course in clinical treatment of burn patients: pain and analgesia]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Nie FF.
europepmc   +1 more source

[Interpretation of International Guideline for Clinical Practice of Chinese Medicine: Allergic Rhinitis]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Fu Q, Zhang Q.
europepmc   +1 more source

[Distribution of respiratory pathogens in patients with pneumonia in Yinzhou, Ningbo, 2015-2024]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Yang Z, Li S, Li X, Shen P, Sun Y, Lin H, Jiang Z, Zhan S, Liu Z.   +8 more
europepmc   +1 more source

[Chinese guidelines for the clinical application of antibacterial drugs for febrile neutropenia (2026)]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Chinese Society of Hematology, Chinese Medical Association, Chinese Medical Doctor Association, Hematology Branch.   +3 more
europepmc   +1 more source