Results 81 to 90 of about 594,524 (137)

[Oral mucosal administration]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Liu T, Liu J, Zhao H.
europepmc   +1 more source

环境友好型离子液体催化环氧丙烷反应合成丙二醇醚

, 2017
丙二醇醚类化合物是性能优良的精细化学品,也是环保型高级溶剂.该类化合物具有两个强溶解性功能基团—醚键和羟基,前者具有亲油性,可溶解疏水性物质,后者具有亲水性,可溶解亲水性物质,因而丙二醇醚具有很强的溶解能力,素有“万能溶剂”之称,可广泛应用于涂料、油墨、油漆、印刷、电子化学品、染料、净洗和纺织等行业.丙二醇醚类化合物目前主要由环氧丙烷和低级脂肪醇反应合成,然而,由于环氧丙烷的位阻效应,使其在酸或碱的条件下开环的位置会不同,从而得到不同的醇醚产物.由于碱催化的醇醚产物更加环境友好,因而越来越被人们所关注 ...
Ren Baozeng, Li Zihang, Chen Shengxin, Zhao Cong, Zhang Ruirui, Liu Ruixia, Zhang Suojiang   +6 more
core  

[Preservation of necrotic bone structures: an alternative to osteonecrosis of femoral head replacement therapy]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ma J, Sun W, Peng J, Cheng L.
europepmc   +1 more source

学术交流 信息沟通——祝《重庆环境科学》创刊十周年

, 1989
<正> 热烈祝贺《重庆环境科学》创刊十周年。如一个人一样,《重庆环境科学》已从青年时期进入壮年时期,不但显得越来越成熟,而且对环境科学界的影响也必将越来越大。环境问题是人类通过生产和生活活动影响环境而产生的后果 ...
王德铭
core  

[Efficient dental panoramic radiographic diagnosis under resource constraints <i>via</i> edge quantization and multi-modal synergy]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao T, Jiao Y, Ni M, Luo Y, Xia S, Xu Y, He Y.   +6 more
europepmc   +1 more source

[Molecularly imprinted polymers： novel green preparation methods and cutting-edge applications review]. [PDF]

Se Pu
Li F, Jia B, Hu Q, He X, Chen L, Zhang Y.   +5 more
europepmc   +1 more source

[Family Environmental Unpredictability and Adolescent Physiological and Psychological Health: The Buffering Role of Positive School Climate]. [PDF]

Xin Li Xue Bao
倩 高, 静 陈, 宁 孙, 佳 李, 薇 王, 媛 向, 珺 谢, 华 林, Qianqian G, Meijing C, Jianing S, Yijia LI, Wei W, Shiyuan X, Mingjun X, Danhua L.   +15 more
europepmc   +1 more source

[Development and validation of a health information-seeking behavior questionnaire for patients with non-communicable chronic diseases]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Maitikuerban M, Tang P, Jiang Y, Zhao Y, Lan M, Zhang Y, Tang L.   +6 more
europepmc   +1 more source

[Service system models for adolescent mental health in different institutional contexts and their implications for China]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Wang Y, Yan L, Lin Z, Xiao Y, Jiang W.
europepmc   +1 more source

[Effect of Long-term Exposure to PM_2.5 and Its Chemical Components on Frailty Incidence in Middle-aged and Older Adults in China: A Prospective Cohort Study]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Chen K, Liu Q, Wu C, Yang L, Lin X.
europepmc   +1 more source