Results 31 to 40 of about 1,458,450 (180)

具有高活性和强抗烧结性能贵金属金催化剂及制备和应用

open access: yes, 2011
具有高活性和强抗烧结性能的贵金属金催化剂,是以羟基磷灰石和过渡金属铁氧化物的混合物为载体,贵金属金为活性组分的担载型催化剂;两种载体的协同效应使得该催化剂在具有良好的催化活性同时拥有优异的高温抗烧结性能和反应稳定性;其中羟基磷灰石,主要起增强金催化剂的高温抗烧结性能以及反应稳定性的作用;氧化铁主要起提高金催化剂的催化反应活性的作用。该催化剂具有制备简单、催化活性高、稳定性好、抗烧结性能强等特点,即使是经过600℃高温煅烧,依然具有较高的催化反应活性。该发明开发了一种高活性强抗烧结性能的贵金属金催化剂 ...
赵昆峰   +4 more
core  

活性污泥对阿特拉津的吸附特性研究

open access: yesGongye shui chuli, 2014
通过活性污泥对阿特拉津的等温吸附和动力学吸附试验,研究了活性污泥对阿特拉津的吸附特性。结果表明:活性污泥对阿特拉津具有一定的吸附能力,且加入HgCl后吸附效果较好,原因是抑制微生物活性的污泥,化学稳定性好,吸附能力也相应加强;另外,硝化污泥对阿特拉津的吸附能力要好于普通活性污泥;伪二级动力学方程和颗粒内扩散方程能更好地拟合活性污泥对阿特拉津的动力学吸附特征,表明吸附是化学吸附和颗粒扩散共同作用的结果。
王红娟   +6 more
doaj  

Between Dependence and Alienation: Understanding the Digital Minimalist Behavior of Chinese Millennials—An Analysis Based on SEM and fsQCA

open access: yesJournal of Adolescence, Volume 98, Issue 5, Page 1715-1736, July 2026.
ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
wiley   +1 more source

本校104年上半年推動紫錐花運動 鄰近國小拒毒萌芽反毒宣導活動

open access: yes, 2015
[[abstract]]一杯珍奶的價錢,就能買一支「K菸」,伴隨著毒品的低價化,毒害正悄悄地在各級校園中誘惑著年輕學子。本校為響應政府推動「紫錐花運動」及教育部拒毒萌芽反毒宣導服務學習模式推廣活動,今年為第二年向教育部申請專案經費,招募大學生以大手牽小手的模式到鄰近小學,透過親和有趣的反毒教育劇坊,帶領學童瞭解毒品的危害與拒毒的技巧,使反毒的意識生根於校園,為莘莘學子營造清新健康的學習環境。   本校為使反毒運動向下紮根,上半年已於3月23日由志工服務社 ...
學務處生活輔導組
core  

Al2O3添加剂对粘土莫来石化反应的影响

open access: yesDianci bileiqi, 1989
粘土莫来石化反应取决于所研讨的Al2O3的添加量、反应时间与反应温度.使用的粘土为含有一定量石英的高岭土.粘土莫来石化的动态分析证明,核晶模型成功地描述了1200℃~1300℃温度区间内的反应过程.试验测得这种反应的活化能在105~173kJ/mol范围内.添加5%Al2O3的粘土测得的活化能最低.添加浓度较高时粘土莫来石化过程的活化能试验值比不含添加剂时高.结果表明,采用Al2O3作为添加剂不仅能改善机械性能,而且对粘土莫来石化进程也起到影响.
庄子茹
doaj  

Examining the multi‐disciplinary origins of biophobia towards threatening and non‐threatening wildlife in a highly urbanised city in China

open access: yesPeople and Nature, Volume 8, Issue 7, Page 2338-2352, July 2026.
Abstract Urbanisation is reshaping how people experience wildlife, reducing our shared spaces with local biodiversity. Fewer opportunities for human–wildlife interactions weaken our emotional attachments to nature and precipitate a loss of species knowledge and familiarity.
Sam S. S. Lau   +3 more
wiley   +1 more source

Marine Applications of Metal‐Modified FEVE Coatings on 6061 Aluminum Alloy for Enhanced Anti‐Corrosion and Anti‐Biofouling

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT This study developed a metal–modified fluoroethylene vinyl ether (FEVE) organic coating on 6061 aluminum alloy, supported by a micro‐arc oxidation (MAO) pretreatment layer, to enhance corrosion resistance and antifouling performance in marine environments.
Chang Liu   +5 more
wiley   +1 more source

國立彰化師範大學104學年度新生歡迎系列活動

open access: yes, 2016
[[abstract]]本校為迎接大一新鮮人,提升家長對學校辦學理念和發展願景的瞭解,及協助新生適應校園環境,特於104年9月5日(星期六)至9月20日(星期日)舉辦一系列新生歡迎活動。   首先是9月5日(星期六)之「新生家長日」,特別邀請家長及新生參加全校親師活動及各系親師座談。今年特別於全校親師活動首次頒發大學部新生入學獎勵,含大學部優秀學生入學獎勵、外國學生入學獎勵、運動績優入學獎勵、楊忠禮博士鼓勵優秀馬來西亞僑生入學獎勵、企業界校友獎勵彰師附工學生入學獎勵及公費生等六項約34名新生 ...
學務處課外活動指導組
core  

生物炭吸附耦合过硫酸盐再生去除水中腐殖酸

open access: yesGongye shui chuli, 2023
生物炭来源广泛、成本低,可活化过硫酸盐实现吸附和催化降解水中污染物的功能。然而,生物炭吸附和催化性能较低、回收性较差、孔道易堵塞等缺点限制了其推广应用。提出了利用椰壳生物炭(CB)吸附耦合过二硫酸盐(PDS)再生实现去除水中腐殖酸(HA)的方法。结果表明,CB本身可通过吸附或催化PDS实现HA降解,而经PDS再生后CB的吸附和催化速率分别提高了2.4和3.2倍;循环利用4次后,CB仍保持有较高的吸附和催化活性。PDS再生丰富了CB表面的孔隙结构及活性位点,有效活化了CB,促进了HA在其表面的吸附 ...
张晨   +4 more
doaj  

Transfer Learning‐Guided Discovery of Advanced Tetrametallic Single‐Cluster Catalysts for Urea Electrosynthesis

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Developing advanced electrocatalysts for urea synthesis is pivotal to alleviating environmental burdens as well as advancing sustainability in the industrial and agricultural sectors, yet untargeted catalyst screening still suffers from the notorious drawbacks of being time‐consuming, labor‐intensive, and inefficient.
Xinyuan Yang   +8 more
wiley   +1 more source

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