检索结果-南通市图书馆

Amorphization of Co-Nb Magnetic Alloys by Mechanical Alloying

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1991年第8期8卷 436-438页

作者： MA Xueming yue lanping DONG Yuanda Institute of Solid State Physics Academia SinicaHefei 230031

Formation of amorphous Co-Nb system by mechanical alloying(MA)in the composition range of Co_(25)Nb_(75)-Co_(70)Nb_(30) was studied by X-ray *** properties of the mechanically alloyed Co_(70)Nb_(30) powder were *** variation in H_(c) curve with milling time can be explained by two-stage mechanism involved in the milling *** results show that the amorphous powder prepared by MA is of good soft magnetic properties.

关键词： diffraction properties process

MECHANICAL REDUCTION OF CuO BY Mg AT ROOM TEMPERATURE

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1992年第3期5卷 218-220页

作者： MA Xueming yue lanping DONG Yuanda Institute of Solid State Physics,Academia Sinica,Hefei,China Inst of Solid State Physics Acad Sinica Hefei China

The mechanical reduction of CuO by pure metallic Mg has been investigated during pulver- izing in ball mill at room *** reduction was towards its completion of an average particle size down to 20 nm after milling for 32 *** mechanism of the mechanical reduction of oxides seems to be the surface activation of nano-metre sized particles driven by mechani- cal force.

关键词： CuO Cu mechanical reduction Mg

Crystal Structure during Film Formation

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 1994年第2期10卷 117-120页

作者： Guoping DU Hui SHEN lanping yue Weiguo YAO Zongquan LI and Zhenzhong QI (Institute of Solid State Physics, Academia Sinica, Hefei, 230031, China)(To whom correspondence should be addressed) Acad Sinica Hefei China

For evaporation-deposited Ti films, face-centred cubic structure was observed at the initial stage of film growth, then transited to the hexagonal close-packed structure during film growing (less than 50 nm thick). While. for ion-beam sputter-deposited films. the structure of films always kept the fcc structure during all stages of film formation. The structure of film at initial growth stages relates with the substrate. It is discussed that different film processes and different growth stages provide different thermodynamic condition of film formation and result in the different crystal structures of films during the film formation

关键词： NaCl Crystal Structure during Film Formation nm

Effects of main ecological factors on the growth of marine green alga Caulerpa sertularioides using the response surface methodology

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2023年第11期42卷 90-97页

作者： Bingxin Huang yue Chu Rongjuan Wang Yixiao Wang lanping Ding College of Life Sciences Tianjin Normal UniversityTianjin 300387China Tianjin Key Laboratory of Animal and Plant Resistance Tianjin 300387China

Caulerpa sertularioides is an invasive potential blooming green alga in China but it remains poorly *** studied the effects of ecological factors on its *** conditions of ecological factors,i.e.,irradiance,temperature,and salinity,for the growth of its fragments were determined in the response surface methodology(RSM).The specific growth rates(SGR)of the fragments were determined in single-factor *** results show that the SGR of *** peaked under the conditions of irradiance 37.5μmol/(m~2·s),temperature25℃,and salinity ***,using the Box-Behnken design,the conditions were further optimized and verified to be:irradiance 39.03μmol/(m~2·s),temperature 25.29℃,and salinity 30.06,under which the SGR reached 4.66%.The results provide new theoretical data and solutions for the cultivation,invasion prediction,and monitoring of Caulerpa species in China and the *** RSM method may have great potential applications in the environmental adaptation characteristics of new macroalgal cultivars,intensive orientation cultured germplasm,and environmental hazard analysis of cultivated species in the field.

关键词： Caulerpa sertularioides fragment response surface methodology(RSM) ecological factor

在线全文

学校读者我要写书评

暂无评论

基质金属蛋白酶及其抑制因子与肝纤维化

胃肠病学和肝病学杂志 2006年第6期15卷 627-629页

作者：岳兰萍马红贾继东首都医科大学附属北京友谊医院肝病中心北京100050

肝纤维化是各种慢性肝病向肝硬化发展的共同病理过程,其实质是以Ⅰ、Ⅲ型胶原为主的细胞外基质(extracellular matrix,ECM)合成与降解失衡,导致ECM在肝内过度沉积.

关键词：基质金属蛋白酶金属蛋白酶组织抑制因子肝纤维化

Two-stage reproduction derived from cells of thallus could directly contribute to seeds for green tidal algal Enteromorpha(Ulva) prolifera/clathrata bloom,with disclosure of their ephemeral trait

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2023年第9期42卷 101-112页

作者： Bingxin Huang lanping Ding Yao Zhang Youxuan Guo Junxia Liang Yanqi Xie yue Chu College of Life Sciences Tianjin Normal UniversityTianjin 300387China Marine Biology Institute Shantou UniversityShantou 515063China Zhanjiang No.2 Middle School Zhanjiang 524000China

Green tidal algal Enteromorpha species complete their life cycles by the isomorphic alternation of *** provenance of green tide caused by them in the western Yellow Sea has been disputed. The cell reproduction derived from adult thallus was observed on E. clathrata collected from Shantou City, Guangdong Province in this study. Subsequently, it further found that E. proliferia collected from Qingdao City, Shandong Province and Qinhuangdao City, Hebei Province, produced reproductive cells by somatic cells of its early infantile thallus or branch. The latter is functionally similar to that the seedlings of red alga Porphyra yezoensis produce the monospores, and could exquisitely explain the ephemeral or opportunistic trait and environmental adaptation ability of Enteromorpha species. Changes in growth conditions may induce the two types of cell *** contribute to the bloom, and can effectively reveal the seasonally occurring large-scale and on-year and offyear phenomenon. The latter may have played a decisive role in its formation. This paper analyses the legal status of the species name, the type of generation during bloom, ephemeral traits, the role of microscopic propagule, the area of origin, on-year and off-year phenomenon, early warning and prevention and control of the species, and so on. On this basis, further study on the influence of environmental factors on cell reproduction of early infantile thalli or branches will achieve a positive effect for early warning and prevention and control of the green tidal algal bloom.

关键词： green tidal algae Yellow Sea opportunistic trait on-year and off-year early infantile alternation of generations prediction on the occurrence process

BRIEF REPORTS PHASE SEPARATION OF THE METALLIC GLASS Pd_(77.5)Ni_(6)Si_(16.5)

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1988年第12期5卷 570-571页

作者：岳兰平沈辉 Institute of Solid State Physics Academia SinicaHefei

In metallic glasses,the investigation of phase separation is important for the study of microstructure change near Tg and *** "liquid phase separation"of metallic glass Pd_(77.5)Ni_(6)Si_(16.5) observed is clearly at ... 详细信息

关键词： microstructure metallic

Marine green alga Cladophora aokii Yamada and its epiphytes from Yinggehai, Hainan, China： morphological taxonomy, formation and analysis of its environmental adaption

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2018年第10期37卷 40-45页

作者： DING lanping DAI yue HUANG Bingxin LI Yongmei LIU Rui DENG Shaoyang College of Life Sciences Tianjin Normal University Tianjin 300387 China Tianjin Key Laboratory of Animal and Plant Resistance Tianjin 300387 China

Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphological characteristics, the taxonomy of Cl. aokii and its epiphytes is carried out. There are some epiphytes attached on Cl. aokii Yamada including Cl. fascicularis （Mertens ex C. Agardh） Kfitzing, Chaetomorpha pachynerna （Montagne） Kiitzing, Cerarniurn carnouii Dawson, Licmophora abbreviata Agardh, Lyngbya sp. and Chattonella sp.. The formation of the individual of Cl. aokii is dissected and explained, which can help to analyze the adaption in details among this species, its epiphytes and native marine environment. The results reveal the marine macroepiphytic taxonomy in Ha/nan, China, and preliminarily explain the adaptive relationship between macroalgae and environment.

关键词： Hainan Yinggehai Cladophoraceae morphological taxonomy growth pattern environmental adaption

Recent development of pillar[n]arene-based amphiphiles

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第4期32卷 1267-1279页

作者： Yan Cai Zhecheng Zhang yue Ding lanping Hu Jin Wang Tingting Chen Yong Yao School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China

Pillar[n]arene-based amphiphiles,mainly including amphiphilic pillar[n]arenes and supra-amphiphilic pillar[n]arenes,have obtained considerable interests in recent years due to their fascinating chemical structures,various self-assembly behaviors,and widely *** to the pillar-like frameworks and the rich host-guest recognitions of the cavities,these amphiphiles can be easily controlled to form dimensional and morphologic assemblies for multiple *** with traditional linear covalent amphiphiles,the introduction of host-guest recognitions facilitated the preparation and controllability of these supramolecular amphiphilic ***,the host-guest recognitions endow the assemblies from pillar[n]arene-based amphiphiles with stimuli-responsive *** this mini-review,we summarized the chemical structures,self-assembly features,and the applications of pillar[n]arene-based ***,several research topics of pillar[n]arenebased amphiphiles can be further developed in the future,such as larger cavity amphiphilic pillar[n]arenes,co-assembly with 2 D materials and utilization of the host-guest interactions.

关键词： Pillararene Supramolecular assemblies Amphiphiles Reversible conversion Controlled release