检索结果-南通市图书馆

Light(Science & Applications) 2022年第12期11卷 2982-2993页

作者： dongxun yang Abdul Mannan Fumikazu Murakami Masayoshi Tonouchi Institute of Laser Engineering Osaka University 2-6 YamadaokaSuitaOsaka 565-0871Japan

Advances in modern semiconductor integrated circuits have always demanded faster and more sensitive analytical methods on a large-scale *** surface of wafers is fundamentally essential to start building circuits,and quantitative measures of the surface potential,defects,contamination,passivation quality,and uniformity are subject to *** present study provides a new approach to access those by means of terahertz(THz)emission *** femtosecond laser illumination,THz radiation,which is sensitive to the surface electric fields of the wafer,is ***,we systematically research the THz emission properties of silicon surfaces under different surface conditions,such as the initial surface with a native oxide layer,a fluorine-terminated surface,and a hydrogenterminated ***,a strong doping concentration dependence of the THz emission amplitude from the silicon surface has been revealed in different surface conditions,which implies a semiquantitative connection between the THz emission and the surface band bending with the surface ***-induced THz emission spectroscopy is a promising method for evaluating local surface properties on a wafer scale.

关键词： terminated fluoride fluorine

Permian integrative stratigraphy,biotas,paleogeographical and paleoclimatic evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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

Science China Earth Sciences 2024年第4期67卷 1107-1151页

作者： Shuzhong SHEN Yichun ZHANG dongxun YUAN Haipeng XU Qi JU Hua ZHANG Quanfeng ZHENG Mao LUO Zhangshuai HOU State Key Laboratory for Mineral Deposits Research School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material CyclingNanjing UniversityNanjing 210023China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Nanjing 210049China School of Resources and Geosciences China University of Mining and TechnologyXuzhou 221116China

The Permian Period was a critical time interval during which various blocks of the Qinghai-Tibetan Plateau have experienced profound and complex paleogeographical *** supercontinent Pangea was formed to its maximum during this interval,hampering a global east-to-west trending equatorial warm ocean ***,a semi-closed Tethys Ocean warm pool formed an eastward-opening oceanic embayment of Pangea,and became an engine fostering the evolutions of organisms and environmental changes during the Paleozoic-Mesozoic *** and preserved fossil groups have proved extremely useful in understanding such changes and the evolutionary histories of the Qinghai-Tibetan *** distributed Permian deposits and fossils from various blocks of the Qinghai-Tibetan Plateau exhibited varied characteristics,reflecting these blocks’different paleolatitude settings and drifting *** Himalaya Tethys Zone south to the Yarlung Zangbo suture zone,located in the northern Gondwanan margin,yields fossil assemblages characterized by cold-water organisms throughout the Permian,and was affliated to those of the *** of the exotic limestone blocks within the Yarlung Zangbo suture zone are Guadalupian(Middle Permian)to Early Triassic in *** exotic limestone blocks bear fossil assemblages that have transitional affinities between the warm Tethys and cold Gondwanan regions,suggesting that they most probably represent seamount deposits in the Neo-Tethys *** the Asselian to Sakmarian(Cisuralian,also Early Permian),the Cimmerian microcontinents in the northern part of Gondwana preserved glacio-marine deposits of Asselian to Sakmarian,and contained typical Gondwana-type cold-water *** the middle Cisuralian(~290-280 Ma),the Cimmerian microcontinents rifted off from the Gondwanaland,and drifted northward allometrically due to the active magmatism of the Panjal Traps in the northern margin of the Indian *** slices of micro

关键词： Permian Tethys Ocean Qinghai-Tibetan Plateau Biotas Paleogeography

在线全文

学校读者我要写书评

暂无评论

变电站蓄电池状态监测与在线核容活化研究

湖北电力 2016年第4期40卷 29-31,41页

作者：宋会平杨东熏卢萍杨铭徐玉凤李永祥国网湖北省电力公司荆州供电公司湖北荆州434000 国网湖北省电力公司湖北武汉430077 广州市仟顺电子设备有限公司广东广州511430

通过分析现有蓄电池运维存在的问题,提出了蓄电池状态监测与在线核容活化的新方法,有效解决了蓄电池劣化、容量下降而不能及时告警的严重问题,不仅保证了变电站的安全可靠运行,而且可替代年度核容放电工作,真正实现蓄电池的免维护。

关键词：变电站蓄电池状态监测在线核容

在线全文

学校读者我要写书评

暂无评论

直肠原位凝胶的应用研究进展

中国药学杂志 2024年第2期59卷 101-110页

作者：雷晓萌吴玉欢彭颖王灿坚阳涛李东勲张国松张文锍江西中医药大学南昌330006 中药固体制剂制造技术国家工程研究中心南昌330006

直肠原位凝胶结合凝胶剂与直肠给药的双重特点,已成为目前研究的热点。直肠原位凝胶是一类以溶液状态给药后,能在用药部位立即发生相转变,由液态相转变为非化学交联半固体凝胶的制剂,具有独特的反向热凝胶性质、良好的缓释作用和生物利... 详细信息

直肠原位凝胶结合凝胶剂与直肠给药的双重特点,已成为目前研究的热点。直肠原位凝胶是一类以溶液状态给药后,能在用药部位立即发生相转变,由液态相转变为非化学交联半固体凝胶的制剂,具有独特的反向热凝胶性质、良好的缓释作用和生物利用度高等特点。笔者参考近10年来国内外相关文献,从直肠原位凝胶的特点、制备工艺、质量评价方法及应用等方面进行总结,通过分析直肠原位凝胶的研究进展,为研究和开发高效的直肠给药制剂提供新的思路。

关键词：直肠给药原位凝胶制备工艺质量评价

在线全文

学校读者我要写书评

暂无评论

褐煤超临界气体连续抽提过程的开发

燃料化学学报 1988年第3期 212-219页

作者：武练增刘东勋沈满珍杨煌朱亚杰中国科学院山西煤炭化学研究所中国科学院山西煤炭化学研究所太原

在褐煤半连续抽提研究的基础上,建成了小型连续抽提装置。采用煤浆进料,抽出油随同气体溶剂进入分离器进行分离,残煤通过抽提器下部两个球阀逐级放出。此装置经170小时连续运转,操作平稳,运转正常。由于煤裂化生成少量轻质油混入溶剂中... 详细信息

在褐煤半连续抽提研究的基础上,建成了小型连续抽提装置。采用煤浆进料,抽出油随同气体溶剂进入分离器进行分离,残煤通过抽提器下部两个球阀逐级放出。此装置经170小时连续运转,操作平稳,运转正常。由于煤裂化生成少量轻质油混入溶剂中,因而溶剂量未减少。生成水量少,估计是因水参与了油生成反应所致。试验用溶剂为粗二甲苯,在410℃,14MPa 下,云南寻甸褐煤油收率为36.5%(对maf 煤而言,以下同),山西繁峙褐煤油收率为35.6%。

关键词：抽提物云南寻甸油收率褐煤柴煤抽出油超临界气体

Permian Fusuline Fauna from the Lower Part of the Lugu Formation in the Central Qiangtang Block and its Geological Implications

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2014年第2期88卷 365-379页

作者： ZHANG Yichun SHI Guangrong SHEN Shuzhong YUAN dongxun School of Life and Environmental Sciences Deakin UniversityMelbourne Burwood Campus State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and palaeontology Department of Earth Sciences Nanjing University

A Kubergandian （Kungurian） fusuline fauna from the lower part of the Lugu Formation in the Cuozheqiangma area,central Qiangtang Block is *** fusuline fauna belongs to the Southern Transitional Zone in palaeobiogeography,and is characterised by the presence of the distinctive bi-temperate genus Monodiexodina and many genera common in lower latitude Tethyan areas such as Parafusulina and *** occurrence of Monodiexodina in the fauna confirms that the seamount-type carbonates of the Lugu Formation did not originate from the Palaeotethys Ocean,but rather from a branch of the Neotethys Ocean after the rifting of the Qiangtang Block from the Tethys Himalaya area in the Artinskian.

关键词： Fusuline Permian peri-Gondwanan blocks Qiangtang Block Tibet

Blue LED-pumped intense short-wave infrared luminescence based on Cr^(3+)-Yb^(3+)-co-doped phosphors

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2022年第6期11卷 1194-1205页

作者： Yan Zhang Shihai Miao Yanjie Liang Chao Liang dongxun Chen Xihui Shan Kangning Sun Xiao-Jun Wang Key Laboratory for Liquid-Solid Structure Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China Jiangsu Bree Optronics Co. LtdNanjing 211103China Department of Physics Georgia Southern UniversityStatesboroGA 30460USA

The growing demand for spectroscopy applications in the areas of agriculture,retail and healthcare has led to extensive research on infrared light *** ability of phosphors to absorb blue light from commercial LED and convert the excitation energy into long-wavelength infrared luminescence is crucial for the design of cost-effective and high-performance phosphor-converted infrared ***,the lack of ideal blue-pumped short-wave infrared(SWIR)phosphors with an emission peak longer than 900 nm greatly limits the development of SWIR LEDs using light converter *** we have developed a series of SWIR-emitting materials with high luminescence efficiency and excellent thermal stability by co-doping Cr^(3+)-Yb^(3+) ion pairs into Lu_(0.2)Sc_(0.8)BO_(3) host *** from strong light absorption of Cr^(3+) in the blue waveband and very efficient Cr^(3+)→Yb^(3+) energy transfer,the as-synthesized Lu_(0.2)Sc_(0.8)BO_(3):Cr^(3+),Yb^(3+) phosphor emits intense SWIR light in the 900-1200 nm from Yb^(3+) under excitation with blue light at~460 *** optimized phosphor presents an internal quantum yield of 73.6%and the SWIR luminescence intensity at 100℃can still keep 88.4%of the starting value at 25℃.SWIR LED prototype device based on Lu0.2Sc0.8BO3∶Cr^(3+)Yb^(3+) phosphor exhibits exceptional luminescence performance,delivering SWIR radiant power of 18.4 mW with 9.3%of blue-to-SWIR power conversion efficiency and 5.0%of electricity-to-SWIR light energy conversion efficiency at 120 mA driving ***,under the illumination of high-power SWIR LED,covert information identification and night vision lighting have been realized,demonstrating a very bright prospect for practical applications.

关键词： luminescence intense wave

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

黄茶曲奇饼干配方优化

现代食品 2024年第16期30卷 136-140页

作者：周育媛顾龙建刘懂勋林涵钰广东科贸职业学院餐旅学院广东广州510430

本研究以低筋粉为主料,添加黄茶粉,并辅以白砂糖、黄油和盐等调味品研制黄茶曲奇饼干。利用感官评分值作为指标,通过单因素和Box-Behnken中心组合试验方案,进行响应面分析,结合实际确定最佳工艺条件为:低筋粉添加量175 g、黄油添加量12... 详细信息

本研究以低筋粉为主料,添加黄茶粉,并辅以白砂糖、黄油和盐等调味品研制黄茶曲奇饼干。利用感官评分值作为指标,通过单因素和Box-Behnken中心组合试验方案,进行响应面分析,结合实际确定最佳工艺条件为:低筋粉添加量175 g、黄油添加量123 g、糖粉添加量40 g、黄茶粉添加量5 g、蛋黄添加量20 g、奶粉5 g、盐1 g。

关键词：黄茶粉曲奇饼干响应面法配方

维普期刊数据库博看期刊

统计模型在基于QbD理念的药品研发与生产中的应用

在线全文

学校读者我要写书评

暂无评论

今日药学 2024年第9期34卷 713-720页

作者：黄剑钧吴秋焱夏明艳李东勲张国松胡鹏翼厦门市湖里区江头街道社区卫生服务中心福建厦门361000 江西中医药大学江西南昌330006

应用质量源于设计(Quality by Design,QbD)理念进行药品研发和生产,核心是确立关键工艺参数、关键物料属性等输入变量与关键质量属性等输出变量之间的多维组合与相互关系,并建立设计空间和控制策略。这一过程需要数学模型的辅助,以统计... 详细信息

应用质量源于设计(Quality by Design,QbD)理念进行药品研发和生产,核心是确立关键工艺参数、关键物料属性等输入变量与关键质量属性等输出变量之间的多维组合与相互关系,并建立设计空间和控制策略。这一过程需要数学模型的辅助,以统计模型的应用最广。文章综述了实验设计、潜变量模型、人工神经网络和支持向量机4种常用统计模型的基本原理及其在基于QbD理念的药品研发与生产中的应用,以期为后续研究者选择合适的模型来确定输入-输出变量间的关系提供参考。

关键词：质量源于设计实验设计潜变量模型人工神经网络支持向量机

CHANGQING OILFIELD COMPANY PROMOTES COOPERATION WITH FOREIGN COMPANIES

在线全文

学校读者我要写书评

暂无评论

China Oil & Gas 2001年第3期8卷 52-54页

作者： Di Guanglong Li dongxun

PetroChina Changqing Oilfield Company has vigorously promoted cooperation with foreign companies in oil and gas exploration and development in Orodos basin. In partnership with US-based Halliburton International Inc., Baker Hughes Inc., Schlumberger Ltd. and BJ Corporation,the company has carried out acidizing and fracturing design and operation for almost 30 wells with acquisition of the equipment. The cooperation has achieved satisfactory results. At present, the company is under negotiation with Exxon-Mobil Corporation and Chevron Corporation on the cooperative natural gas development and application of Sulige and Mizhi gas fields. A large number of first-class international petroleum companies have expressed their great interest and willingness to cooperate with Changqing Oilfield Company. On 30 July, the Asian Exchange Association based in Japan sent a 24-member delegation to Changqing on its fourth tour to seek business opportunities.

关键词： CHANGQING OILFIELD COMPANY PROMOTES COOPERATION WITH FOREIGN COMPANIES