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短波红外成像系统设计及应用的研究进展

红外技术 2024年第3期46卷 246-255页

作者：张艺胡健钏朱尤攀孙爱平陈洁昆明物理研究所云南昆明650223

短波红外光学成像是目前国际上研究热点之一,通过接收短波红外辐射进行探测和成像,可得到更多目标物体的信息,弥补了可见光成像的不足,从而实现全波段成像。本文从短波红外光学成像的光学特性、成像原理和光学系统结构设计出发,比较了... 详细信息

短波红外光学成像是目前国际上研究热点之一,通过接收短波红外辐射进行探测和成像,可得到更多目标物体的信息,弥补了可见光成像的不足,从而实现全波段成像。本文从短波红外光学成像的光学特性、成像原理和光学系统结构设计出发,比较了短波红外与可见光和中长波红外成像的优缺点,并简单介绍了短波红外成像系统中铟镓砷探测器的特点和国内外发展现状,以及介绍了短波红外成像在不同领域的应用情况,最后,对短波红外成像未来的发展进行了展望。

关键词：短波红外成像光学设计铟镓砷探测器

混合式教学模式下影响学生学科成绩的因素分析——以医学免疫学课程为例

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中国免疫学杂志 2024年第4期40卷 828-831页

作者：解博红张国俊孙爱平赵铁锁杨子善许芝山谷妍蓉宋向凤新乡医学院基础医学院免疫学系新乡453003 新乡医学院检验学院新乡453003

随着信息技术快速发展,混合式教学模式逐渐成为多数高校的主流教学模式。如何评价学生的学习成效,分析影响学生成绩的因素,是该教学模式的重点研究方向。本文以新乡医学院医学免疫学课程混合式教学为例,介绍混合式教学的实施过程和评价... 详细信息

随着信息技术快速发展,混合式教学模式逐渐成为多数高校的主流教学模式。如何评价学生的学习成效,分析影响学生成绩的因素,是该教学模式的重点研究方向。本文以新乡医学院医学免疫学课程混合式教学为例,介绍混合式教学的实施过程和评价体系,分析影响学生成绩和学习成效的主要因素,着重探讨形成性评价和“翻转课堂”对学生学科成绩的影响。

关键词：混合式教学学习成效影响因素

Typical earthquake-induced soft-sediment deformation structures in the Mesoproterozoic Wumishan Formation, Yongding River Valley, Beijing, China and interpreted earthquake frequency

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Journal of Palaeogeography 2012年第1期1卷 71-89页

作者： Su Dechen sun aiping Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China State Key Laboratory of Continental Tectonics and Dynamics Beijing 100037 China

The Mesoproterozoic Wumishan Formation, composed of dolomite is a widely distributed stratigraphic unit in the Beijing area. It was formed over a long period of time in the Yan-Liao aulacogen, a stable peritidal environment that was ideal for recording earthquakes in the form of soft-sediment deformation structures (SSDS). Numerous examples occur in the upper part of the Wumishan Formation, along the Yongding River Valley. In addition, brittle structures include intrastratal fault and seismically cracked breccias. The soft-sediment deformation structures include liquefied features (diapirs, clastic dykes, convolute bedding), compressional deformation features (accordion folds, plate-spine breccias, mound-and-sag structures), and extensional plastic features (loop-bedding). Based on the regional geological setting and previous research, movements along the main axial fault of the Yan-Liao aulacogen are considered as the triggers for earthquakes since the Early Mesoproterozoic. The number and distribution of the SSDS suggest the major earthquake frequency in the Wumishan Formation of 20 to 32 thousand years.

关键词： soft-sediment deformation structures Mesoproterozoic Wumishan Formation Yongding River valley China, earthquake frequency

Genesis of an unusual clastic dike in an uncommon braided river deposit

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Journal of Palaeogeography 2013年第2期2卷 127-137页

作者： Su Dechen A.J.(Tom) van Loon sun aiping Institute of Geology Chinese Academy of Geological Sciences State Key Laboratory of Continental Tectonics and Dynamics Geological Institute Adam Mickiewicz UniversityMaków Polnych 1661-606 PoznanPoland

A clastic dike containing unusually large clasts occurs in the Quaternary deposits that unconformably cover the Mesoproterozoic sediments in the Fangshan District,Beijing area,*** material into which the dike intruded is also uncommon because it consists mainly of loess-type silts that were deposited by braided *** intrusion of the dike is explained as the result of the expulsion of pore water into the coarse,gravel-containing layers of a braided river *** large size of the clasts in the dike is explained by an exceptionally strong upwards directed flow which owed its high energy to a high hydrostatic pressure that had been built up because pore water could not gradually seep through the impermeable silt-sized material during ongoing *** uncommon dike is compared with a second example,in similar Quaternary sediments covering the Mesozoic rocks in the Huairou District.

关键词： soft-sediment deformation structures clastic dike braided river deposits loess Quaternary Fangshan District China

Controlled release of dexamethasone from porous PLGA scaffolds under cyclic loading

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Science China Chemistry 2010年第3期53卷 593-597页

作者： Tang GongWen Yang YanFang sun aiping Song TianTian Zhao YunHui Yuan XuBo Yuan XiaoYan Fan YuBo Wang Min Tianjin Univ Tianjin Key Lab Composite & Funct Mat Tianjin 300072 Peoples R China Tianjin Univ Sch Mat Sci & Engn Tianjin 300072 Peoples R China Beihang Univ Sch Biol Sci & Med Engn Beijing 100083 Peoples R China Univ Hong Kong Dept Mech Engn Hong Kong Hong Kong Peoples R China

Poly(L-lactide)-b-poly(ethylene glycol)(PLLA-PEG) microspheres containing dexamethasone(Dex) have been fabricated using a spray-drying *** poly(lactic-co-glycolic acid)(PLGA) scaffolds were prepared using a method combining thermally induced phase separation and porogen leaching.A post-seeding technique was used to immobilize Dex-containing PLLA-PEG microspheres on porous PLGA scaffolds,and drug-containing microspheres-scaffolds(MS-S) were *** Dex-containing scaffolds(D-S) were also made as the control by directly dissolving Dex in the PLGA solution during scaffold *** morphologies of microspheres and scaffolds were studied by scanning electron *** release profiles of both MS-S and D-S were determined under cyclic loading and shaking water bath,*** cumulative release of Dex was measured using an ultraviolet visible *** results show that the incorporation of Dex and microspheres had little effect on the overall morphology of the porous PLGA *** loading significantly accelerated the release of Dex from the drug-containing *** with D-S,MS-S reduced the drug release *** controlled drug delivery of tissue engineering scaffolds under cyclic loading is a key factor to mimic the in vivo mechanical environments and achieve optical clinical efficacy.

关键词： microsphere dexamethasone scaffold PLGA cyclic loading

Dietary intake and serum levels of copper and zinc and risk of hepatocellular carcinoma:A matched case-control study

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Chinese Medical Journal 2024年第5期137卷 596-603页

作者： Xiaozhan Liu Yaojun Zhang Dinuerguli Yishake Yan Luo Zhaoyan Liu Yuming Chen Huilian Zhu aiping Fang Guangdong Provincial Key Laboratory of Food Nutrition and HealthSchool of Public HealthSun Yat-sen UniversityGuangzhouGuangdong 510080China State Key Laboratory of Oncology in South China Sun Yat-sen University Cancer CenterGuangzhouGuangdong 510060China

Background:Copper and zinc are involved in the development of multiple malignancies;yet,epidemiological evidence on hepatocellular carcinoma(HCC)is *** study aimed to investigate the association between dietary intake and serum levels of copper and zinc with the risk of ***:A total of 434 case-control pairs matched for sex and age(±1 year)were included in this *** with newly diagnosed HCC were from the Guangdong Liver Cancer Cohort(GLCC)study,and healthy controls were from the Guangzhou Nutrition and Health Study(GNHS).A semi-quantitative 79-item food frequency questionnaire(FFQ)was used to assess habitual dietary intakes of copper and *** levels of copper and zinc were measured by using inductively coupled plasma mass *** copper(Cu)/zinc(Zn)ratio was computed by dividing copper levels by zinc *** logistic regression models were performed to calculate the odds ratio(OR)and 95%confidence intervals(CI)for per 1 standard deviation increase(per-SD increase)in copper and zinc ***:Higher dietary intake(OR_(per-SD increase)=0.65,95%CI:0.44,0.96,P_(trend)=0.029)and serum levels of zinc(OR_(per-SD increase)=0.11,95%CI:0.04,0.30,P_(trend)<0.001)were both associated with a lower risk of *** analyses showed that the inverse association was only pronounced in men but not in women(P_(interaction)=0.041 for dietary zinc intake and 0.010 for serum zinc levels).Serum copper levels(OR_(per-SD increase)=2.05,95%CI:1.39,3.03,P_(trend)=0.020)and serum Cu/Zn ratio(OR_(per-SD increase)=6.53,95%CI:2.52,16.92,P_(trend)<0.001)were positively associated with HCC risk,while dietary copper intake and dietary Cu/Zn ratio were not associated with HCC ***:Zinc may be a protective factor for HCC,especially among men,but the effects of copper on HCC risk are not clear.

关键词： Copper Zinc Hepatocellular carcinoma risk Case-control studies Dietary intake Serum

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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Science China Earth Sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge SU He sun State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKS),Syr Darya(USRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKS,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(USRD and UAMD),and the combined influence of precipitation and temperature(UAKS and UI).Since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

Fossil Equidae in the Linxia Basin with Biostratigraphic and Paleozoogeographic Significance

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 1-9页

作者： sun Boyang Key Laboratory of Vertebrate Evolution and Human Origins of the Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China

The Linxia Basin is characterized by an abundance of Cenozoic sediments,that contain exceptionally rich fossil *** are abundant in the Linxia Basin,the fossil record of equids in this region including 16 species that represent 10 *** comparison to other classic late Cenozoic areas in China,the Linxia Basin stands out,because the fauna and chronological data accompanying Linxia equids render them remarkably useful for *** anchitheriines in the region,such as Anchitherium and Sinohippus,represent early equids that appeared in the late stages of the middle and late Miocene,*** the equines,most species of Chinese hipparions have been identified in the Linxia Basin and some species of the genera Hipparion and Hippotherium have FAD records for ***,Equus eisenmannae is one of the earliest known species of Equus in the Old World and is well-represented at the Longdan *** species with precise geohistorical distributions can serve as standards for high-resolution chronological units within this *** at the eastern margin of the Tibetan Plateau and subject to considerable uplift,the Linxia Basin has served as a biogeographic transition area for equids throughout the late Cenozoic.

关键词： Equidae Cenozoic biostratigraphy paleozoogeography Linxia Basin

Achieving simultaneously high conversion and high selectivity for light olefins directly producing from syngas

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Science China Chemistry 2024年第3期67卷 753-754页

作者： Yuhan sun Shanxi Research Institute Huairou Research LaboratoryTaiyuan 030032China Institute of Carbon Neutrality ShanghaiTech UniversityShanghai 201210China

The activity and selectivity are two primary indexes of a successful catalyst for chemical reactions. However,achieving a high activity and a high selectivity simultaneously is a long-standing challenge in catalysis, the socalled activity-selectivity trade-off. In the article recently published in Science, a research team led by Prof.

关键词： selectivity simultaneous catalysis