Results 41 to 50 of about 210 (94)

[Determination of seven paraben preservatives in aquatic seasoning using solid-phase extraction coupled with high performance liquid chromatography]. [PDF]

Se Pu, 2023
Ning XP, Yao Q, Xu ZX, Yin Y, Liu H, Zhang XY, Ding T, Zhang Y, Hou Y, Wang MR, Wu LN, Tang QT.   +11 more
europepmc   +1 more source

不同腐殖酸类对黄土坡面侵蚀和养分流失的影响

Shuitu Baochi Xuebao, 2017
在陕西省长武县黄土高原农业生态试验站进行了在相同的上方来水量18 L/min条件下3种不同腐殖酸类（NHA、BFA、FA）的黄土坡面侵蚀和养分流失的试验，分析了不同腐殖酸类及不同量的同一腐殖酸对土壤侵蚀和养分流失的影响。结果表明：不同量的NHA处理下，径流量均随时间的增加而增加，NHA浓度150，300 g/㎡的坡面径流量是500g/㎡的坡面径流量的1.14，1.08倍，含沙率和Br-浓度均随时间的增加而减少，累积径流量、累积泥沙量、累积流失量均随用量的增加而减少，150，300g ...
吴军虎, 朱端端, 王海洋, 杨, 刘业伟   +4 more
doaj  

不同土壤管理措施下坡耕地产流产沙和氮磷流失特征

Shuitu Baochi Xuebao, 2016
采用野外径流小区定位观测法，研究次降雨条件下腐殖酸（HA）、聚丙烯酰胺（PAM）、绿肥（GM）3种土壤管理措施对紫色丘陵区坡耕地产流产沙及氮磷养分流失特征。结果表明：A型（小雨量、短历时、低雨强）降雨发生频率最高，占降雨样本数的71%，B型（大雨量、长历时、中雨强）和C型（中雨量、中历时、高雨强）降雨是引发土壤侵蚀的主要降雨类型。不同土壤管理措施下侵蚀性降雨的临界降雨量差异不明显，降雨量＞10 mm时坡面开始产流产沙。A型降雨下产流量：CK(123.49 L)＞HA(60.67 L)＞GM(53.67 ...
常松果, 胡雪琴, 史东梅, 丁文斌, 蒋   +4 more
doaj  

西藏土壤有机质和氮素状况及其影响因素分析

Shuitu Baochi Xuebao, 2004
根据西藏16个土类168个土壤剖面的分析资料,探讨土壤有机质和氮素状况及其影响因素。西藏土壤有机质>30g/kg和20～30g/kg的面积分别占39%和46%;其地理分布既有广阔高原面上的水平地带性变化,也有山地和深切河谷的垂直地带性变化。土壤有机质中活性腐殖质一般占30%～45%,以酸性土中的比例较大。土壤全氮>1 5g/kg,1 0～1 5g/kg和150mg ...
刘世全 高丽丽 蒲玉琳 邓良基 张世熔
doaj  

[Application and challenges of tissue engineered scaffolds in treatment of long-segment laryngotracheal stenosis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yu Q, Hu J, Yang H, Dong Y, Mo W, Xiong M, Gao Y, Zeng P.   +7 more
europepmc   +1 more source

[Applications and prospects of biodegradable rare earth magnesium alloys as bone implant materials]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Yue H, Zhu X, Gao Z, Sun Z.
europepmc   +1 more source

[<i>Lactobacillus plantarum</i> alleviates lead exposure-induced learning and memory impairment in mice by regulating bile acid metabolism and inhibiting hippocampal NLRP3 expression]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li L, Yu W, Tan M, Li Y, Liu A, Meng X.
europepmc   +1 more source

[Clinical diagnosis and treatment strategies for malignant complex wounds]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Xia CD, Lei DD.
europepmc   +1 more source

[Research progress on mechanisms and clinical management of comorbid constipation in children with autism spectrum disorder]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Ding JJ, DU DY, Li P.
europepmc   +1 more source

[Research Advances on Natural Products in Maintaining Oral Microecological Balance]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Liu Y, Ma Q, Meng M, Wu Y, Zou J.
europepmc   +1 more source