Results 121 to 130 of about 67,239 (157)

[Distribution characteristics and results of allergens in patients with allergic rhinitis in Ningxia area]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023
Zhang Y   +9 more
europepmc   +1 more source

Risk factors for food sensitization in children with atopic dermatitis: a single-center cross-sectional study. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi, 2022
Wang D   +6 more
europepmc   +1 more source

凋落物秋冬季露天堆腐快速腐熟方法

open access: yes, 2010
本发明涉及一种凋落物秋冬季露天堆腐快速腐熟方法,采用选地挖坑、凋落物收集、取样计算、堆制凋落物及处理步骤完成。该方法的主要通过挖坑,地下式堆腐,可充分利用地温,极大的降低了外界低温对堆温的影响,保温、保湿、保肥效果更好,能够保证微生物分解菌群的活力,从而快速达到腐熟效果。该方法解决了西北干旱区人工林凋落物自然分解缓慢、火灾隐患突出、潜在养分流失的问题,同时又不受气候、场地的限制,解决了干旱区人工林生态系统物质循环和养分平衡的问题 ...
邱文成   +6 more
core  

文學季刊

open access: yes, 1967
《文學季刊 ...

core  

[An investigation study on the technology and training level of ski patrol]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Bai P   +7 more
europepmc   +1 more source

Molecular epidemiological characteristics of the virus in 96 children with acute diarrhea in Changdu of Tibet, China. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi, 2022
Mao JW   +7 more
europepmc   +1 more source

湖南慈利马尾松树轮宽度对气候的响应及1854年以来冬季极端低温重建

open access: yes, 2019
利用采自湖南慈利的马尾松树轮样本,建立研究区的标准树轮宽度年表。树轮气候响应分析发现:马尾松径向生长与月最大日降水量在生长季之前部分月份显著负相关 ...
钱恒君, 蔡秋芳, 刘禹
core  

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

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Yang Z   +8 more
europepmc   +1 more source

[Research status and hotspots of seasonal allergic rhinitis based on CiteSpace visualization analysis]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Tian H, Zhu D, Zhao B, Liu X, Meng C.
europepmc   +1 more source

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