Results 121 to 130 of about 23,362 (181)

地外有机化合物 [PDF]

open access: yes, 2014
杨晶, 林杨挺, 欧阳自远
core  

[Research progress on lactylation modification in pathogenesis of osteoarthritis]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wu Y   +7 more
europepmc   +1 more source

一种新的适合富有机质沉积岩的Re-Os同位素分析方法初探 [PDF]

open access: yes, 2015
尹露   +5 more
core  

~(13)C固体核磁共振技术检测PM_(2.5)中的总有机碳质组分 [PDF]

open access: yes, 2015
刘頔   +4 more
core  

[Extracellular matrix materials and tissue regeneration and repair]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhao L, Xie H.
europepmc   +1 more source

不同施肥处理的土壤肥力指标及微生物碳、氮在玉米生育期内的动态变化

open access: yesShuitu Baochi Xuebao, 2007
动态监测了沈阳农业大学棕壤长期定位试验站不同施肥处理土壤pH值、有机质、碱解氮、速效磷、速效钾及土壤微生物量碳、氮在玉米6个生育期内的变化.试验结果得出,长期施肥处理使土壤pH值降低;M4和M4N2P1处理使土壤有机质提高,而N4处理使土壤有机质降低;施肥处理土壤碱解氮含量都高于对照处理,在玉米生育期内土壤有机质和碱解氮变化都呈下降趋势;长期施用有机肥或有机无机肥配合施用可以大幅度提高土壤速效磷和速效钾的含量,M4处理土壤速效磷在玉米拔节期达到最大值.同时,除N4处理土壤微生物量碳 ...
doaj  

Huan bei taipingyang di qu dai zhi bei zhong tan san tan si zhi wu xian dui feng du yu qi hou tiao jian guan xi yan jiu [PDF]

open access: yes, 2010
Barton, Loukas   +6 more
core  

[Clinical characteristics of late-onset circulatory collapse in preterm infants]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Huang Y   +5 more
europepmc   +1 more source

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