期刊文献+
共找到107篇文章
< 1 2 6 >
每页显示 20 50 100
Differential interformational velocity analysis as an effective direct hydrocarbon indicator under velocity reversal conditions,an example from the anomalously high temperature and over-pressured DF1-1 Gas Field in the Yinggehai Basin,South China Sea
1
作者 Zhu Hongtao Liu Keyu +2 位作者 Chen Kaiyuan Li Min Huang Shengbing 《Petroleum Science》 SCIE CAS CSCD 2009年第4期339-346,共8页
In the DF1-1 Gas Field in the Yinggehai Basin, South China Sea, the velocity-depth plot and velocity spectra show significant variations from a linear trend, exhibiting a distinct reversal phenomenon. Velocity paramet... In the DF1-1 Gas Field in the Yinggehai Basin, South China Sea, the velocity-depth plot and velocity spectra show significant variations from a linear trend, exhibiting a distinct reversal phenomenon. Velocity parameters derived from velocity spectral analysis of the seismic data and sonic logs indicate that the interval velocity reverses below 2,100 m (2.2 s two-way time (TWT)) in the DF1-1 Gas Field. Some direct hydrocarbon indicators (DHIs) models developed for the shallow strata cannot be simply applied to the moderately to deeply buried strata for direct exploration target recognition because the velocity reversal has caused the middle-deep gas reservoirs to exhibit a moderate or weak seismic amplitude. The hydrocarbon indicator method of “Differential Interformational Velocity Analysis (DIVA)” with the aid of other hydrocarbon indicating techniques was employed to effectively identify DHIs in the middle-deep strata under velocity inversion. The result has shown that the DIVA technique can be effectively used as a DHI in both the shallow and the middle-deep strata in the study area with the shallow strata characterized by Type I DIVA anomaly and the middle-deep strata characterized by the Type II DIVA anomaly. 展开更多
关键词 DF1-1 Gas Field velocity reversal direct hydrocarbon indicator differential interformational velocity analysis South China Sea
下载PDF
Role Reversal
2
作者 Maya Reid 《ChinAfrica》 2011年第12期50-50,共1页
HIERARCHY is a guiding structure in human society.People both climb and topple down social ladders as they struggle to gain a foothold in school,at work or in the public eye. What if this instinct could be altered? Sc... HIERARCHY is a guiding structure in human society.People both climb and topple down social ladders as they struggle to gain a foothold in school,at work or in the public eye. What if this instinct could be altered? Scientists in Shanghai have figured out how to do just that. Experimenting on mice,a research team with the Institute of 展开更多
关键词 role reversal
下载PDF
Enantio-selective preparation of (S)-1-phenylethanol by a novel marine GDSL lipase MT6 with reverse stereo-selectivity 被引量:4
3
作者 邓盾 张云 +1 位作者 孙爱君 胡云峰 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第11期1966-1974,共9页
We previously functionally characterized a novel marine microbial GDSL lipase MT6 and identified that the stereo-selectivity of MT6 was opposite to that of other common lipases in trans-esterification reactions.Herein... We previously functionally characterized a novel marine microbial GDSL lipase MT6 and identified that the stereo-selectivity of MT6 was opposite to that of other common lipases in trans-esterification reactions.Herein,we have investigated the use of MT6 in stereo-selective biocatalysis through direct hydrolysis reactions.Notably,the stereo-selectivity of MT6 was also demonstrated to be opposite to that of other common lipases in hydrolysis reactions.Parameters,including temperature,organic co-solvents,pH,ionic strength,catalyst loading,substrate concentration,and reaction time,affecting the enzymatic resolution of racemic 1-phenylethyl acetate were further investigated,with the e.e.of the final(S)-l-Phenylethanol product and the conversion being 97%and 28.5%,respectively,after process optimization.The lengths of side chains of 1-phenylethyl esters greatly affected the stereo-selectivity and conversion during kinetic resolutions.MT6 is a novel marine microbial GDSL lipase exhibiting opposite stereo-selectivities than other common lipases in both trans-esterification reactions and hydrolysis reactions. 展开更多
关键词 GDSLlipase BIOCATALYSIS Kinetic resolution Direct hydrolysis (S)-1-Phenylethanol reverse stereo-selectivity
下载PDF
Micro- and nanoporous materials capable of absorbing solvents and oils reversibly: the state of the art 被引量:5
4
作者 Javier S. Acevedo Cortez Boris I. Kharisov +1 位作者 Thelma E. Serrano Quezada Tomas C. Hernandez Garcia 《Petroleum Science》 SCIE CAS CSCD 2017年第1期84-104,共21页
Treatment of petroleum spills and organic solvent pollution in general is an important issue; several techniques are under development to remove oil from water. The use of absorbents is one of the most common techniqu... Treatment of petroleum spills and organic solvent pollution in general is an important issue; several techniques are under development to remove oil from water. The use of absorbents is one of the most common techniques to tackle this problem. These absorbents can be classified based on their characteristics of recyclability into irreversible and reversible ones. In this review, we discuss the application of several materials as oil absorbents, according to their classification and characteristics such as hydrophobicity, surface area and oil absorption capacity. Also, the fabrication methods for some materials are presented and analyzed. 展开更多
关键词 Oil spills - Composites reversIBILITY Aerogels - Natural absorbents Micro- and nanoporousmaterials
下载PDF
Neuroprotective effects of human telomerase reverse transcriptase on beta-amyloid fragment 25-35-treated human embryonic cortical neurons 被引量:3
5
作者 Lingping Kong Lingzhi Wu +2 位作者 Jie Zhang Yaping Liao Huaqiao Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2009年第6期405-412,共8页
BACKGROUND: Numerous current studies have suggested that human telomerase reverse transcriptase (hTERT) gene has neuroprotective effects and can inhibit apoptosis induced by various cytotoxic stresses; however, the... BACKGROUND: Numerous current studies have suggested that human telomerase reverse transcriptase (hTERT) gene has neuroprotective effects and can inhibit apoptosis induced by various cytotoxic stresses; however, the mechanism of action remains unknown. OBJECTIVE: To evaluate the neuroprotective effects and possible mechanism of action of hTERT gene transfection in human embryonic cortical neurons treated with beta-amyloid fragment 25-35 (AI325-35). DESIGN, TIME AND SETTING: The randomized, controlled and molecular biological studies were performed at the Department of Anatomy and Brain Research, Zhongshan School of Medicine, Sun Yat-sen University, China, from September 2005 to June 2008. MATERIALS: AdEasy-1 Expression System was gifted by Professor Guoquan Gao from Sun Yat-Sen University, China. Human cortical neurons were derived from 12-20 week old aborted fetuses, obtained from the Guangzhou Maternal and Child Health Hospital, China. Mouse anti-Odk5 and mouse anti-p16 monoclonal antibodies (Lab Vision, USA), and mouse anti-hTERT monoclonal antibody (Epitomics, USA), were used in this study. METHODS: (1) Recombinant adenovirus vectors, encoding hTERT (Ad-hTERT) and green fluorescent protein (Ad-GFP), were constructed using the AdEasy-1 Expression System. Human embryonic cortical neurons in the Ad-hTERT group were transfected with Ad-hTERT for 1-21 days. Likewise, human embryonic cortical neurons in the Ad-GFP group were transfected with Ad-GFP for 1-21 days. Human embryonic cortical neurons in the control group were cultured as normal. (2) Human embryonic cortical neurons in the Ad-hTERT group were treated with 10 pmol/L Aβ25-35 for 24 hours. Normal human embryonic cortical neurons treated with 10 pmol/Lβ25.35 for 24 hours served as a model group. Human embryonic cortical neurons in the Ad-GFP and control groups were not treated with Aβ25-35. MAIN OUTCOME MEASURES: Expression of hTERT in human embryonic cortical neurons was evaluated by immunocytochemical staining and Western blot assay. Telomerase activity was measured using a PCR-based telomeric repeat amplification protocol (TRAP) ELISA kit. Neural activity in human embryonic cortical neurons was examined by MTT assay; apoptosis was measured using TUNEL assay; and Cdk5 and p16 protein expressions were measured by Western blot. RESULTS: Expression of hTERT protein was significantly increased and peaked at day 3 post-transfection in the Ad-hTERT group. No hTERT expression was detected in the Ad-GFP and control groups. Telomerase activity was significantly greater in the Ad-hTERT group compared with the Ad-GFP and control groups (P 〈 0.01). Compared with the control group, cell activity was significantly decreased (P 〈 0.05), and cell apoptotic rate, Cdk5 and p16 expression were significantly increased (P 〈 0.01) in the model group. Compared with the model group, cell activity was increased in the Ad-hTERT group, and peaked at day 3 post-transfection (P 〈 0.05). Neuroprotective effects also peaked at day 3 post-transfection; and the apoptotic rate, Cdk5 and p16 expression significantly decreased (P 〈 0.01). CONCLUSION: Expression of hTERT in human embryonic cortical neurons can relieve Aβ25-35-induced neuronal apoptosis. The possible mechanism by which hTERT produces these neuroprotective effects may be associated with inhibition of Cdk5 and p16 expression. 展开更多
关键词 human telomerase reverse transcriptase cortical neuron human embryo Alzheimer's disease beta-amyloid fragment 25-35 CDK5 P16
下载PDF
Preparation and Characterization of Cathode Materials La_(0.7)Sr_(0.3-x)Ca_xCo_(0.9)Fe_(0.1)O_(3-δ) by Reverse Titration Co-Precipitation Method for ITSOFC 被引量:1
6
作者 高文元 胡志强 +5 位作者 李长敏 唐乃岭 孙福禄 唐旭 魏蔷薇 孙永平 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S1期358-363,共6页
The precursors of La0.7Sr0.3-xCaxCo0.9Fe0.1O3-δ(LSCCF, x=0.05, 0.10, 0.15, 0.20) as the cathode materials for intermediate temperature solid oxide fuel cell (ITSOFC) were prepared by reverse titration co-precipitatio... The precursors of La0.7Sr0.3-xCaxCo0.9Fe0.1O3-δ(LSCCF, x=0.05, 0.10, 0.15, 0.20) as the cathode materials for intermediate temperature solid oxide fuel cell (ITSOFC) were prepared by reverse titration co-precipitation method with metal-nitrates as starting materials and mixed alkali (NaOH and Na2CO3) as a precipitating agent. The formation process of LSCCF from the precursors was monitored by TG-DSC, and the crystal structure and particles morphology of the precursors which were calcined at 600, 800, 1000 ℃ for 3 h were characterized using XRD, SEM technologies. Compared with the solid state reaction of constituent oxides, when the pH value of the precipitating solution was in the range of 9.1~9.5, the LSCCF powders from the precursors caclined at 800 ℃ for 3 h had high purity, homogeneous and single perovskite phase. The electrical conductivity of the LSCCF samples sintered at 1200 ℃ for 3 h, which was measured as a function of temperatures from 100 to 800 ℃ by DC four-probe method in air, decreased with x from 0.05 to 0.20. The value of electrical conductivity was almost equal because of Ca2+, Sr2+ co-dopant resulting in the 'mix effect' while x=0.10 or 0.15. The electrical conductivity of all doped samples was higher than 100 S·cm-1 at intermediate temperatures from 500 to 800 ℃, and there was good compatibility between the LSCCF cathode and Ce0.8Sm0.2O2 electrolyte. 展开更多
关键词 intermediate temperature solid oxide fuel cell La_(0.7)Sr_(0.3-x)Ca_xCo(1-y)Fe_yO_(3-δ) reverse titration co-precipitation property rare earths
下载PDF
Role of Reversed Sural Artery Flap in Reconstruction of Lower Third of the Leg, Ankle and Foot Defects
7
作者 Mohamed Elsayed Mohamed Mohamed Belal A. Al Mobarak 《Modern Plastic Surgery》 2018年第3期50-59,共10页
Introduction: Coverage of defects of the distal lower extremity and foot remains a challenging reconstructive prcedure. Free tissue transfer remains the standard for the management of these defects. However, there are... Introduction: Coverage of defects of the distal lower extremity and foot remains a challenging reconstructive prcedure. Free tissue transfer remains the standard for the management of these defects. However, there are some disadvantages like;longer operative times, bulky contour, and the need for highly skilled expertise. The reverse superficial sural artery flap (RSSAF) is a distally based fasciocutaneous or adipo-fascial flap that is used for coverage of defects that involve the distal third of the leg, ankle, and foot. A significant advantage of this flap is a constant blood supply that does not require sacrifice of a major artery. Methods: Twenty RSSAF flaps were harvested for reconstruction of different traumatic soft tissue defects of the lower third of leg, ankle and foot. Follow up for 6 months postoperative. Results: Twenty Patients;twelve males and eight females underwent reconstruction of different soft tissue defects over the foot and ankle using RSSAF. The overall complications occurred in 6 flaps;4 minor and 2 major complications. The remaining 14 flaps passed an uneventful follow up. Conclusions: The reverse superficial sural artery flap RSSAF can be used as a reliable alternative to free tissue transfer in reconstruction of defects over the lower third of leg, ankle, and foot. Venous congestion is the major threat to the flap but its incidence can be minimized by wide pedicle, less kink of the flap, and keep the venae comitants around the artery. 展开更多
关键词 role of reversed SURAL ARTERY FLAP in Reconstruction of Lower Third of the LEG ANKLE and FOOT Defects
下载PDF
The Preparation for Human B7-2 and DC Vaccines and their Roles in Anti-tumor Immunity Against Esophageal CancerIn Vitro
8
作者 Jing LU Jun ZHAO Guo-Qiang ZHAO Hong-Yan YANG You-Tian HUANGMing-Yao ZHAO Zi-Ming DONG(Department of Pathophysiology, Medical College of Zhengzhou University, Zhengzhou 450052,China) 《生物医学工程学杂志》 EI CAS CSCD 北大核心 2005年第S1期111-112,共2页
关键词 DC The Preparation for Human B7-2 and DC Vaccines and their roles in Anti-tumor Immunity Against Esophageal CancerIn Vitro APC
下载PDF
The Role of Government in the Socialization of Old- age Service
9
作者 XU Wenyan 《International English Education Research》 2017年第3期78-80,共3页
In the different stages of the development of the old-age service, the responsibility and function of the government will be different. In the new period, the government should redefine its role in advancing the socia... In the different stages of the development of the old-age service, the responsibility and function of the government will be different. In the new period, the government should redefine its role in advancing the socialization of the old-age service. The level of socialization of old-age services is not high, the lack of vitality of the pension market, the imperfect system and other problems arise because the government is not clear. The government should deal with the relationship between the main body of the market and avoid the 'double failure' of the government and the market. The government should play a guiding role in the policy, laws and regulations and other aspects of good service work for the social services of the elderly to provide a good development environment. 展开更多
关键词 old - age service socialization MARKET GOVERNMENT role orientation
下载PDF
角色转换与历史记忆--莫高窟第323窟张骞出使西域图的艺术史意义 被引量:13
10
作者 沙武田 WANG Pingxian 《敦煌研究》 CSSCI 北大核心 2014年第1期21-29,共9页
莫高窟初唐第323窟属敦煌石窟中的"原创性"洞窟,窟内图像独特,是敦煌石窟群中仅存的主题为佛教史迹画内容的一窟。其中的"张骞出使西域图"更是特殊,把本来属于政治外交性质的张骞使西域历史附会为佛像传入汉地最早... 莫高窟初唐第323窟属敦煌石窟中的"原创性"洞窟,窟内图像独特,是敦煌石窟群中仅存的主题为佛教史迹画内容的一窟。其中的"张骞出使西域图"更是特殊,把本来属于政治外交性质的张骞使西域历史附会为佛像传入汉地最早事件。在这幅壁画中张骞出使事件发生的"角色转换",至少到初唐时期成为一种特殊的"历史记忆"图像,集中反映佛像传入汉地的历史。考察洞窟整体壁画及塑像,洞窟的设计者或绘画者很有可能为僧人,其目的是将"求佛名号"的使命交给中西交通开拓者的张骞身上。说明有唐一代,张骞出使西域的历史在佛教界发生了"角色转换",由政治和外交图像转换为佛教题材内容,并最终成为一种独特的图像文献,赋有"历史记忆"的功能,在佛教发展史上占有一定的地位。因此,这种独一无二的原创性洞窟在艺术史上具有非常重要的意义。而从图像胡风因素出发,则可发现该窟的功德主有可能为来华的西域移民。 展开更多
关键词 莫高窟第323窟 张骞出使西域图 角色转换 历史记忆
下载PDF
蓝粒小麦花青素合成途径中的查尔酮合酶基因和类黄酮3'5'-羟化酶基因3'末端的克隆和表达分析
11
作者 杨国华 李滨 +5 位作者 高建伟 刘建中 赵学强 郑琪 童依平 李振声 《Acta Botanica Sinica》 CSCD 2004年第5期588-594,共7页
采用RT-PCR和RACE方法从蓝粒小麦(Triticum aestivum L.×Thinopyrum ponticum(Podp.)Z.W.Liu et R.R.-C.Wang)发育种子中克隆到两个查尔酮合酶基因(TaCHS.tl,TaCHS.wl),分别编码394个氨基酸,二者核苷酸和氨基酸序列的同源性分... 采用RT-PCR和RACE方法从蓝粒小麦(Triticum aestivum L.×Thinopyrum ponticum(Podp.)Z.W.Liu et R.R.-C.Wang)发育种子中克隆到两个查尔酮合酶基因(TaCHS.tl,TaCHS.wl),分别编码394个氨基酸,二者核苷酸和氨基酸序列的同源性分别为96.0%和98.9%;而且克隆到一个类黄酮3'5’.羟化酶基因(F3'5'H)3’-末端。分别从长穗偃麦草(Thinopyrum ponticum(Podp.)Z.W.Liu et R.R.-C.Wang)、蓝粒小麦、白粒小麦和中国春基因组中分离到查尔酮合酶基因(CHS)的全长序列(ThpCHS.tg TaCHS.wg,TaCHS.csg),它们的核苷酸序列之间具有很高的同源性,且均含有一个内含子(intron),序列差异主要在内含子。通过DNA序列比较,发现一个CHS与亲本之一的长穗偃麦草基因组同源性达100%,一个CHS与另一白粒亲本基因组同源性达99%,表明来自于父、母本的CHS在蓝粒发育的种子中均表达。Southerm杂交结果表明CHS在小麦中的拷贝数至少有4个,不同颜色的蓝粒小麦、白粒小麦间拷贝数基本一致,但都与长穗偃麦草有差异,根据以上结果初步判定CHS在蓝粒小麦中属于一个多基因家族。Reverse Northern分析表明CHS在开花后15d发育的蓝粒小麦中具有较强的表达;花后21d F3'5'H和DFR的转录本积累显著高于CHS,基本上检测不到CHS的表达。这三个基因在蓝粒小麦中的表达顺序与其他植物花青素合成途径中的基因表达次序一致:ChS先于F3'5'H,F3'5'H先于DFR。实验还表明F3'5'H和DPR在幼叶中表达也较强,CHS仅在发育种子中表达,具有组织特异性。花后21d,F3’5’H在白粒、蓝粒小麦和中国春种子中均强烈表达,蓝粒小麦CHS和DFR转录本比白粒小麦多。因此,认为在蓝粒小麦中存在花青素生物合成途径,在蓝色色素形成过程中,该途径中的结构基因受到调节基因的调控。 展开更多
关键词 蓝粒小麦 花青素生物合成途径 查尔酮合酶基因 类黄酮3’5’-羟化酶基因 reversE Northem分析
下载PDF
集体经营性建设用地入市中地方政府的角色定位--以农民权益保护为视角 被引量:5
12
作者 郑和园 黄金龙 《河南科技大学学报(社会科学版)》 2016年第4期99-103,共5页
集体经营性建设用地入市既强调市场机制的高度参与,也需要地方政府主导。这一制度现实决定了入市必须处理好市场化改革中的政府角色转换问题。唯有在公共利益最大化制度目标下,以农民权益不受损为前提,综合考量粮食和生态环境安全、土... 集体经营性建设用地入市既强调市场机制的高度参与,也需要地方政府主导。这一制度现实决定了入市必须处理好市场化改革中的政府角色转换问题。唯有在公共利益最大化制度目标下,以农民权益不受损为前提,综合考量粮食和生态环境安全、土地资源可持续发展等现实诉求和界定标准,将地方政府从角色明确和角色回避两个维度进行定位,方能处理好市场和地方政府在集体经营性建设用地中的关系。 展开更多
关键词 集体经营性建设用地 地方政府 农民权益
下载PDF
Reverse Solution and Parametric Design of the Conjugate Cam Weft Insertion Mechanism Based on VB.NET and UG 被引量:2
13
作者 陈建能 王英 +3 位作者 雷昌毅 赵雄 任根勇 林万焕 《Journal of Donghua University(English Edition)》 EI CAS 2012年第2期166-170,共5页
In order to realize the parametric design of the conjugate cam weft insertion mechanism,according to the necessary parameters of weft insertion process,ideal kinematic curves of the weft insertion mechanism were given... In order to realize the parametric design of the conjugate cam weft insertion mechanism,according to the necessary parameters of weft insertion process,ideal kinematic curves of the weft insertion mechanism were given,and the mathematical model of reverse solution for this mechanism was established.The parameters of this mechanism were obtained by reverse solution on the basis of the given ideal kinematic curves and kinematic requirements.The parametric design platform which was integrated with the functions of parametric reverse solution,motion simulation,three-dimensional modeling and virtual assembly was developed based on VB.NET and Unigraphics(UG) NX.After entering the technological parameters of weft insertion process and essential structural parameters by users,three-dimensional drawing of the main parts such as the conjugate cam and shaft,can be obtained by this platform,also the processing data of the cam can be calculated.This platform provides a rapid approach for parametric design of weft insertion mechanism. 展开更多
关键词 weft insertion mechanism conjugate cam parametric design reverse solution VB. NET Unigraphics (UG) NX 1672-5220 (2012) 02-0166-05 1672-5220 (2012) 02-0166-05
下载PDF
角色互换教学法在神经内科临床教学中的应用效果
14
作者 陈伟康 雷四英 蓝丽康 《全科医学临床与教育》 2024年第9期820-822,共3页
目的 探讨角色互换教学法在神经内科临床教学中的应用效果。方法 选择2021年7月至2022年6月在丽水市人民医院神经内科实习的50名实习生作为研究对象,随机分成实验组和对照组,每组25名。实验组采用师生角色互换教学模式进行临床带教;对... 目的 探讨角色互换教学法在神经内科临床教学中的应用效果。方法 选择2021年7月至2022年6月在丽水市人民医院神经内科实习的50名实习生作为研究对象,随机分成实验组和对照组,每组25名。实验组采用师生角色互换教学模式进行临床带教;对照组采用传统教学模式进行临床带教。比较两组学生出科时的理论和临床技能操作考核成绩,对实习生进行教学满意度问卷调查。结果 实验组的理论成绩、技能考核总成绩、技能穿刺过程、技能整体评价成绩均明显高于对照组,差异均有统计学意义(t分别=5.96、9.14、7.08、4.70,P均<0.05)。但两组技能操作前成绩比较,差异无统计学意义(t=1.41,P>0.05)。实验组实习生对教学满意度也明显高于对照组(t=6.36,P<0.05)。结论 角色互换教学法可以提高实习生的理论和实践技能水平,临床教学效果较好,满意度高。 展开更多
关键词 角色互换 神经内科学 临床教学
下载PDF
“翻转课堂”结合思维导图在骨科临床教学中应用价值
15
作者 张培 宋早瑞 +4 位作者 丁海 刘泉 常文举 李环宇 官建中 《中国医药科学》 2024年第15期79-83,共5页
目的探讨“翻转课堂”结合思维导图教学模式的临床教学应用效果。方法将2022年1月至2023年1月在蚌埠医学院第一附属医院骨科住院规培医师40名,按照随机数表法分为观察组和对照组,每组各20名。观察组使用基于“翻转课堂”结合思维导图教... 目的探讨“翻转课堂”结合思维导图教学模式的临床教学应用效果。方法将2022年1月至2023年1月在蚌埠医学院第一附属医院骨科住院规培医师40名,按照随机数表法分为观察组和对照组,每组各20名。观察组使用基于“翻转课堂”结合思维导图教学模式,对照组使用常规基于问题的教学方法(PBL),从临床实践技能及专业理论考核成绩、规培医师满意度方面进行教学效果评价。结果观察组执业医师真题、骨科出科专业理论、骨科专业前沿知识、文献阅读、辅助检查考试成绩明显高于对照组,差异有统计学意义(P<0.05)。观察组临床问诊、患者查体、鉴别诊断、诊疗方案制订、医患沟通成绩均明显高于对照组,差异有统计学意义(P<0.05)。观察组教学效果满意度得分高于对照组,差异有统计学意义(P<0.05)。结论“翻转课堂”结合思维导图的教学模式,能够充分调动住院规培医生自主学习的积极性,大幅度提升学习效率。 展开更多
关键词 翻转课堂 思维导图 角色互换 骨科规培
下载PDF
住房反向抵押模式的主体多元化与政府的作用
16
作者 王者洁 《中国发展》 2024年第3期76-85,共10页
老年人住房反向抵押养老保险作为一项新型的养老保险兼具保险和抵押贷款的双重属性,保险公司在保险法律关系中具有保险人、贷款人及抵押权人三重主体身份。这种保险与抵押、借贷法律关系的主体合一导致风险叠加,需重新选择住房反向抵押... 老年人住房反向抵押养老保险作为一项新型的养老保险兼具保险和抵押贷款的双重属性,保险公司在保险法律关系中具有保险人、贷款人及抵押权人三重主体身份。这种保险与抵押、借贷法律关系的主体合一导致风险叠加,需重新选择住房反向抵押这一自助养老的主体模式,将基础法律关系由保险合同转化为抵押、借款合同,从而化解住房反向抵押中借贷双方的风险。将仅限双方主体参与的住房反向抵押保险模式改为多元主体参与的住房反向抵押“贷款+保险”模式,由商业银行作为住房反向抵押的贷款主体;保险公司负责为借贷双方承保;政府在监督与政策制定方面发挥规范引导作用,采取金融监管及税费优惠予以支持和保障。 展开更多
关键词 住房反向抵押 主体模式 “贷款+保险” 多元主体 政府作用
下载PDF
论心理互换在高校思想政治教育中的应用 被引量:1
17
作者 彭冰冰 吴娅莹 《嘉兴大学学报》 2024年第5期32-36,共5页
心理互换是提升思想政治教育实效的良好方法,能够拉近思想政治教育者和教育对象的距离,让双方在换位思考的基础上相互尊重、相互理解,从而达成思想政治教育目标。反过来,思想政治教育也可以促进大学生心理健康,形成健全的人格,促进大学... 心理互换是提升思想政治教育实效的良好方法,能够拉近思想政治教育者和教育对象的距离,让双方在换位思考的基础上相互尊重、相互理解,从而达成思想政治教育目标。反过来,思想政治教育也可以促进大学生心理健康,形成健全的人格,促进大学生的全面发展。通过创造开放包容的教育环境、建立友好亲近的师生关系、运用强互动性的教学方法,可以加快实现心理互换原则在高校思想政治教育中的灵活运用,提升思想政治教育的针对性和实效性。 展开更多
关键词 心理互换 高校思想政治教育 应用
下载PDF
Design, Synthesis and Evaluation of Substituted N-(3-Arylpropyl)-9,10-dihydro-9-oxoacridine-4-carboxamides as Potent MDR Reversal Agents in Cancer 被引量:3
18
作者 Velingkar, V. S. Dandekar, V. D. 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2011年第3期504-510,共7页
A novel class of molecules with structure N-(3-arylpropyl)-9,10-dihydro-9-oxoacridine-4-carboxamides (20- 29) were designed by generating a pharmacophore for potent MDR reversal activity using phase drug design so... A novel class of molecules with structure N-(3-arylpropyl)-9,10-dihydro-9-oxoacridine-4-carboxamides (20- 29) were designed by generating a pharmacophore for potent MDR reversal activity using phase drug design software. The designed molecules were synthesized by a novel synthesis route and evaluated for their inhibitory effects on the transport activity of P-glycoprotein (P-gp) by standard Hoechst 33342 assay method. Based on the pIC50 values of ten title compounds screened, three compounds exhibited better activity as compared to Verapamil used as standard. 展开更多
关键词 N-(3-arylpropyl)-9 10-dihydro-9-oxo-acridine-4-carboxamides MDR reversal agents pharmacophore phase drug design software structure-activity relationships structure elucidation
原文传递
基于角色互换的“找茬式”教学法在妇产科护生带教中的应用
19
作者 赵瑶菲 郑巧 《中国高等医学教育》 2024年第2期112-113,共2页
目的:观察基于角色互换的“找茬式”教学法在妇产科实习护生带教中的应用效果。方法:选取60名护生为研究对象,随机分为对照组30名与试验组30名,分别应用传统教学法、基于角色互换的“找茬式”教学法进行带教。结果:试验组出科考核成绩... 目的:观察基于角色互换的“找茬式”教学法在妇产科实习护生带教中的应用效果。方法:选取60名护生为研究对象,随机分为对照组30名与试验组30名,分别应用传统教学法、基于角色互换的“找茬式”教学法进行带教。结果:试验组出科考核成绩、临床综合能力、自主学习能力均高于对照组(P<0.05)。结论:基于角色互换的“找茬式”教学法在妇产科护生带教中应用取得了良好的效果,值得推荐。 展开更多
关键词 角色互换教学 “找茬式”教学 妇产科 实习护生
下载PDF
人工智能在人力资源中的应用
20
作者 陈艳 《科学与信息化》 2024年第22期190-192,共3页
人工智能正稳步进入人力资源的各个领域,从招聘、入职到员工发展、员工安全和福利、绩效管理、劳动力规划。人工智能帮助人力资源从业人员的方式包括自动化耗时的管理任务,让人力资源从业人员专注于其他方面,从而提高工作效率;提供数据... 人工智能正稳步进入人力资源的各个领域,从招聘、入职到员工发展、员工安全和福利、绩效管理、劳动力规划。人工智能帮助人力资源从业人员的方式包括自动化耗时的管理任务,让人力资源从业人员专注于其他方面,从而提高工作效率;提供数据驱动的见解,用于改善绩效管理和留住员工,进行合理的劳动力规划等。同时,人工智能也对人力资源从业人员带来了挑战,他们必须主动转变角色,积极学习新的技能,降低失业风险。基于此,本文就人工智能在人力资源领域的应用展开论述。 展开更多
关键词 人工智能 人力资源 数据驱动 角色转变
下载PDF
上一页 1 2 6 下一页 到第
使用帮助 返回顶部