Results 51 to 60 of about 131,921 (109)

Moencopie Wash, La Plata strata, 12± mi. east of Tuba, Arizona (Stephen Janus photo, 1909)

, 1909
Photograph of Moenkopi Wash east of Tuba City, Arizona. Photo by Stephen Janus, from Herbert E.
Janus, Stephen
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交联法制备聚酰亚胺中空纤维纳滤膜

, 2018
以不同分子量的聚乙烯亚胺(PEI)和小分子二元胺作为交联剂,对聚酰亚胺(PI)中空纤维膜进行化学交联来制备耐溶剂纳滤膜.考察了PEI分子量和交联时间对膜分离性能的影响.结果表明,膜分离性能随PEI分子量的增加变差,随交联时间的增加变好.用PEI600作为交联剂,交联时间为4h时,膜的纯水通量为8.3L/(m^2·h·MPa),对PEG1000的截留率为97.0%.3种小分子交联剂中,用乙二胺交联膜的分离性能较好,纯水通量为25.8L/(m^2·h·MPa),对PEG1000的截留率为82.6 ...
王丽娜, 金焱, 于海军, 邹彤, 董香灵, 张靖昱, 曹义鸣   +6 more
core   +1 more source

PES制膜体系亚层形成机理的研究

, 2001
在Strathmann等人∧［1］提出的诱导期概念的基础上，对PES制膜体系的亚层形成机理进行研究，进一步阐明：成膜过程中由于诱导期的影响使后生成的核比先生成的核的生长滞后，从而导致核有生长存在“先核生长优势”，并采用两步分相∧［2～4］、控速凝胶等实验方法对PES制膜体系成膜过程中的凝胶行为进行研究，从非溶剂进行膜液的角度 ...
李恕广, 江成璋, 王连军
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[Pathophysiological mechanisms of coagulation dysfunction associated with liver disease]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Wang H, Chen X, Lu YY.
europepmc   +1 more source

[A case report of Crohn's disease in a child treated with upadacitinib]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Pan GX, Yang QP, Yang XM, Cai Y, Li ST.
europepmc   +1 more source

White Mesa with natural arch, 40+ mi. north east of Tuba, Ariz. (Stephen Janus photo), 1909

, 1909
Photograph by Stephen Janus of White Mesa and its natural arch, north of Tuba City Arizona, in 1909. Photo no. 410 from Herbert E.
Janus, Stephen
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[<i>Huangqin Qingre Chubi</i> Capsule inhibits JAK/STAT-driven synovial angiogenesis in rheumatoid arthritis by suppressing the LncRNA EBLN3P/miR-369-3p/NFIX axis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Sun M, Wang Y, Liu F.
europepmc   +1 more source

[Advances in the clinical management of acute severe ulcerative colitis]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Shao W, Zhou Y, Xu F.
europepmc   +1 more source

[Pathological roles of lipid metabolism disorders in asthma and related intervention strategies]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Chen Q, Niu C, Guo Z, Xiang Y.
europepmc   +1 more source

Looking across Navajo Canyon, Arizona, toward Navajo Mountain. La Plata strata (Stephen Janus photo, 1909)

, 1909
Photograph by Stephen Janus of a view of Navajo Canyon, Arizona, toward Navajo Mountain in 1909. La Plata sandstone is seen. Photo no. 404 from Herbert E.
Janus, Stephen
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