1临床资料患者男,52岁。主因“反复胸闷痛1年余,再发伴加重3个月”于2019年2月25日收入江西省人民医院。患者入院1年前开始出现心前区闷痛,压榨样,症状每次持续数分钟,常于活动后诱发,休息或含服硝酸甘油可缓解。近3个月以来,上述胸闷...1临床资料患者男,52岁。主因“反复胸闷痛1年余,再发伴加重3个月”于2019年2月25日收入江西省人民医院。患者入院1年前开始出现心前区闷痛,压榨样,症状每次持续数分钟,常于活动后诱发,休息或含服硝酸甘油可缓解。近3个月以来,上述胸闷痛症状反复发作,持续时间延长,在外院就诊行冠状动脉造影示右冠状动脉慢性完全闭塞(chronic total occlusion,CTO)病变,尝试正向开通失败,予以药物保守治疗后仍有胸闷痛发作,患者为进一步治疗就诊于江西省人民医院。既往有高血压病史(长期服用缬沙坦,血压控制良好)和长期吸烟史(20支/d,30年,未戒烟)。入院查体无明显阳性体征。实验室检查显示:血尿便三大常规、肝肾功能、凝血功能、甲状腺功能、心肌损伤标志物均正常,低密度脂蛋白胆固醇2.53 mmol/L,总胆固醇2.03 mmol/L。展开更多
目的探讨使用直接抽吸首次通过技术(a direct aspiration first-pass technique,ADAPT)治疗急性大血管闭塞性卒中的安全性和有效性。方法回顾性分析12例采用ADAPT技术治疗急性大血管闭塞性卒中病人的临床资料。应用脑梗死溶栓(thromboly...目的探讨使用直接抽吸首次通过技术(a direct aspiration first-pass technique,ADAPT)治疗急性大血管闭塞性卒中的安全性和有效性。方法回顾性分析12例采用ADAPT技术治疗急性大血管闭塞性卒中病人的临床资料。应用脑梗死溶栓(thrombolysis in cerebral infarction,TICI)分级评估闭塞血管再通情况,美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NIHSS)评分评估病人的神经功能缺失情况。术后90 d进行随访,采用改良Rankin量表(modified Rankin Scale,mRS)评分评估病人的独立生活情况。结果本组平均使用ADAPT(2.0±1.8)次,发病至股动脉穿刺的平均间隔时间(360.8±170.9)min,股动脉穿刺至血管再通平均时间(133.1±43.2)min。术后即刻获得有效再通(TICI 2b~3级)11例,其中TICI 3级7例,2b级4例;TICI 2a级1例。手术前后NIHSS评分差异有统计学意义(P<0.05)。死亡2例。10例病人术后90 d随访mRS评分1分5例,3分2例,4分1例,5分2例。结论ADAPT技术治疗急性大血管闭塞性卒中安全、有效。展开更多
In the littlest Higgs model with T-parity(LHT) the mirror quarks induce the special flavor structures and some new flavor-changing couplings,which could greatly enhance the production rates of the flavor-changing proc...In the littlest Higgs model with T-parity(LHT) the mirror quarks induce the special flavor structures and some new flavor-changing couplings,which could greatly enhance the production rates of the flavor-changing processes. We in this paper study some bottom and anti-strange production processes in the LHT model at the International Linear Collider(ILC),i.e.,e^+e^-→bs andγγ→bs.The results show that the production rates of these processes are sizeable for the favorable values of the parameters.Therefore,it is quite possible to test the LHT model or make some constraints on the relevant parameters of the LHT through the detection of these processes at the ILC.展开更多
The implementation of ICT （information and communication technologies） into the educational process is becoming a reality in the 21st century. Today＇s students grow up with technology. To keep their attention, scie...The implementation of ICT （information and communication technologies） into the educational process is becoming a reality in the 21st century. Today＇s students grow up with technology. To keep their attention, scientific problems should be solved through visualization, which is made possible using ICT in the educational process. In the modem educational process, students still have difficulties in learning science concepts. Also, it is a very common problem that students cannot apply mathematical language and concepts into other science areas such as physics, engineering, etc. For example, students start learning about vectors in mathematics in secondary school. Vectors are very important because they have a wide area of applications especially in physics, engineering and navigation to represent forces, tension, velocity, etc.. Using the free mathematical software GeoGebra, a simulation of using vectors in these areas is made. It will be shown that such simulations increase students＇ interest, keep their attention, and make this knowledge more real and more understandable and connected to the physical world and thus more applicable to their other studies.展开更多
In the construction sector, which is one of the major goals of the new economy, the company is aiming at a new constructive practice and upgrading of the built, using ICT （information and communications technology） ...In the construction sector, which is one of the major goals of the new economy, the company is aiming at a new constructive practice and upgrading of the built, using ICT （information and communications technology） technologies. So the focus is on new operating and organizational models of sustainable building processes in the architecture, engineering and construction sectors, which are based on three-dimensional models of digital technology BIM （building information modeling）. It is intended as a human activity that improves building workflows and, through software and IFACs （industry foundation classes）, manages flexibility, coordinates and optimizes operational choices on time, economic, and environmental sustainability parameters. The goal is a new interoperable building process that involves designers, contractors and businesses from programming to lifecycle building and maintenance through the integrated project delivery of the building. Dynamic architectures, interactive with efficient technological and constructive systems, are integrated with innovative products of complex nature and bi-directional performance, engineered, with energy storage and renewable resources. The methodologies are based, above all, on the adoption of BIM technologies with the digital project manager and the use of robotic technological tools. Digitization is applied for the design and construction of architectural and infrastructure artifacts, in interaction with intelligent, adaptive, nanotechnical and user-friendly materials and climate. The results are aimed at efficient buildings with user comfort and safety, accuracy, and risk monitoring with remote monitoring, highlighting VDC （visual design construction） in CID （computational intelligent design）.展开更多
The introduction of the ICTs （Information and Communication Technologies） in education has set a new paradigm in knowledge acquisition. The Internet, overhead projectors and interactive boards, presentation and anim...The introduction of the ICTs （Information and Communication Technologies） in education has set a new paradigm in knowledge acquisition. The Internet, overhead projectors and interactive boards, presentation and animation software, and online databases are only some resources that teachers use in order to present information in a more dynamic, immediate, and stunning way, transforming and revitalizing the teaching-learning process. The ICTs have been established in the university classroom and nowadays, they have become an essential part in this teaching-learning process. Lecturers make use of them in the same proportion as they make of traditional materials. At the same time, students have to be acquainted with these new technologies and they also have to be able to deal with them. The objective of this paper is twofold： On the one hand, we study and show how our students make use of the technologies when they have to face their oral presentations in the subject Advanced English： Professional Settings （English Studies Degree at Universitat Jaume I in Castellen, Spain）. It is acknowledged that visual aids can be helpful to support a speech, but we want to analyze if the visual aids are successfully applied, how and to which extent. On the other hand, we want to make out the opinions of their classmates about the use of these graphical resources （students fill in a questionnaire about the effectiveness of the visual aids in their classmates＇ presentations and how they would improve them）. Results demonstrate that not only teachers make advantage of the new technological resources, we show, based on the students＇ oral presentations and their peer-reviews, that also our university students are increasingly aware of the advantage and importance of the ICTs in the classroom.展开更多
In this paper a comprehensive review of heat transfer enhancement through microchannels has been presented. Over the past few years due to multifunetion, shrinking package size and high power dissipation, the heat flu...In this paper a comprehensive review of heat transfer enhancement through microchannels has been presented. Over the past few years due to multifunetion, shrinking package size and high power dissipation, the heat flux per unit area has increased significantly. Microchannels, with their large heat transfer surface to volume ratio and their small volumes, have shown a good thermal performance. Microchannels have been proven to be a high per- formaace cooling technique which is able to dissipate heat flux effectively from localized hot spots over small surface area. A good amount of heat transfer augmentation techniques have been reported on flow disruption through microchannel. These techniques promote free stream separation at the leading edge which results in boundary layer development and enhanced mixing leading to increased heat transfer. Flow disruption can be achieved through passive surface modifications, such as, shape of channel, dimple surfaces, ribs, cavities, groove structures, porous medium, etc. Combined effects of these geometrical configurations in heat transfer augmenta- tion are also reported in the literature. In this paper recent developments in experimental and numerical simula- tions of single-phase liquid cooled microchannel have been discussed to analyze the pressure drop, friction and heat transfer characteristics due to different flow conditions, roughness structure and passive surface modifica- tions. It has been observed that the flow disruption techniques are effective for heat transfer enhancement with lower penalties of increased pressure drop. The review concludes with suggestions for future research in this area.展开更多
文摘1临床资料患者男,52岁。主因“反复胸闷痛1年余,再发伴加重3个月”于2019年2月25日收入江西省人民医院。患者入院1年前开始出现心前区闷痛,压榨样,症状每次持续数分钟,常于活动后诱发,休息或含服硝酸甘油可缓解。近3个月以来,上述胸闷痛症状反复发作,持续时间延长,在外院就诊行冠状动脉造影示右冠状动脉慢性完全闭塞(chronic total occlusion,CTO)病变,尝试正向开通失败,予以药物保守治疗后仍有胸闷痛发作,患者为进一步治疗就诊于江西省人民医院。既往有高血压病史(长期服用缬沙坦,血压控制良好)和长期吸烟史(20支/d,30年,未戒烟)。入院查体无明显阳性体征。实验室检查显示:血尿便三大常规、肝肾功能、凝血功能、甲状腺功能、心肌损伤标志物均正常,低密度脂蛋白胆固醇2.53 mmol/L,总胆固醇2.03 mmol/L。
文摘目的探讨使用直接抽吸首次通过技术(a direct aspiration first-pass technique,ADAPT)治疗急性大血管闭塞性卒中的安全性和有效性。方法回顾性分析12例采用ADAPT技术治疗急性大血管闭塞性卒中病人的临床资料。应用脑梗死溶栓(thrombolysis in cerebral infarction,TICI)分级评估闭塞血管再通情况,美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NIHSS)评分评估病人的神经功能缺失情况。术后90 d进行随访,采用改良Rankin量表(modified Rankin Scale,mRS)评分评估病人的独立生活情况。结果本组平均使用ADAPT(2.0±1.8)次,发病至股动脉穿刺的平均间隔时间(360.8±170.9)min,股动脉穿刺至血管再通平均时间(133.1±43.2)min。术后即刻获得有效再通(TICI 2b~3级)11例,其中TICI 3级7例,2b级4例;TICI 2a级1例。手术前后NIHSS评分差异有统计学意义(P<0.05)。死亡2例。10例病人术后90 d随访mRS评分1分5例,3分2例,4分1例,5分2例。结论ADAPT技术治疗急性大血管闭塞性卒中安全、有效。
基金Supported by the National Natural Science Foundation of China under Grant Nos.10775039,11075045by Specialized Research Fund for the Doctoral Program of Higher Education under Grant Nos.20094104110001,20104104110001by the Programme for Youth's Talents of Xinyang Normal University under Grant No.200950
文摘In the littlest Higgs model with T-parity(LHT) the mirror quarks induce the special flavor structures and some new flavor-changing couplings,which could greatly enhance the production rates of the flavor-changing processes. We in this paper study some bottom and anti-strange production processes in the LHT model at the International Linear Collider(ILC),i.e.,e^+e^-→bs andγγ→bs.The results show that the production rates of these processes are sizeable for the favorable values of the parameters.Therefore,it is quite possible to test the LHT model or make some constraints on the relevant parameters of the LHT through the detection of these processes at the ILC.
文摘The implementation of ICT （information and communication technologies） into the educational process is becoming a reality in the 21st century. Today＇s students grow up with technology. To keep their attention, scientific problems should be solved through visualization, which is made possible using ICT in the educational process. In the modem educational process, students still have difficulties in learning science concepts. Also, it is a very common problem that students cannot apply mathematical language and concepts into other science areas such as physics, engineering, etc. For example, students start learning about vectors in mathematics in secondary school. Vectors are very important because they have a wide area of applications especially in physics, engineering and navigation to represent forces, tension, velocity, etc.. Using the free mathematical software GeoGebra, a simulation of using vectors in these areas is made. It will be shown that such simulations increase students＇ interest, keep their attention, and make this knowledge more real and more understandable and connected to the physical world and thus more applicable to their other studies.
文摘In the construction sector, which is one of the major goals of the new economy, the company is aiming at a new constructive practice and upgrading of the built, using ICT （information and communications technology） technologies. So the focus is on new operating and organizational models of sustainable building processes in the architecture, engineering and construction sectors, which are based on three-dimensional models of digital technology BIM （building information modeling）. It is intended as a human activity that improves building workflows and, through software and IFACs （industry foundation classes）, manages flexibility, coordinates and optimizes operational choices on time, economic, and environmental sustainability parameters. The goal is a new interoperable building process that involves designers, contractors and businesses from programming to lifecycle building and maintenance through the integrated project delivery of the building. Dynamic architectures, interactive with efficient technological and constructive systems, are integrated with innovative products of complex nature and bi-directional performance, engineered, with energy storage and renewable resources. The methodologies are based, above all, on the adoption of BIM technologies with the digital project manager and the use of robotic technological tools. Digitization is applied for the design and construction of architectural and infrastructure artifacts, in interaction with intelligent, adaptive, nanotechnical and user-friendly materials and climate. The results are aimed at efficient buildings with user comfort and safety, accuracy, and risk monitoring with remote monitoring, highlighting VDC （visual design construction） in CID （computational intelligent design）.
文摘The introduction of the ICTs （Information and Communication Technologies） in education has set a new paradigm in knowledge acquisition. The Internet, overhead projectors and interactive boards, presentation and animation software, and online databases are only some resources that teachers use in order to present information in a more dynamic, immediate, and stunning way, transforming and revitalizing the teaching-learning process. The ICTs have been established in the university classroom and nowadays, they have become an essential part in this teaching-learning process. Lecturers make use of them in the same proportion as they make of traditional materials. At the same time, students have to be acquainted with these new technologies and they also have to be able to deal with them. The objective of this paper is twofold： On the one hand, we study and show how our students make use of the technologies when they have to face their oral presentations in the subject Advanced English： Professional Settings （English Studies Degree at Universitat Jaume I in Castellen, Spain）. It is acknowledged that visual aids can be helpful to support a speech, but we want to analyze if the visual aids are successfully applied, how and to which extent. On the other hand, we want to make out the opinions of their classmates about the use of these graphical resources （students fill in a questionnaire about the effectiveness of the visual aids in their classmates＇ presentations and how they would improve them）. Results demonstrate that not only teachers make advantage of the new technological resources, we show, based on the students＇ oral presentations and their peer-reviews, that also our university students are increasingly aware of the advantage and importance of the ICTs in the classroom.
文摘In this paper a comprehensive review of heat transfer enhancement through microchannels has been presented. Over the past few years due to multifunetion, shrinking package size and high power dissipation, the heat flux per unit area has increased significantly. Microchannels, with their large heat transfer surface to volume ratio and their small volumes, have shown a good thermal performance. Microchannels have been proven to be a high per- formaace cooling technique which is able to dissipate heat flux effectively from localized hot spots over small surface area. A good amount of heat transfer augmentation techniques have been reported on flow disruption through microchannel. These techniques promote free stream separation at the leading edge which results in boundary layer development and enhanced mixing leading to increased heat transfer. Flow disruption can be achieved through passive surface modifications, such as, shape of channel, dimple surfaces, ribs, cavities, groove structures, porous medium, etc. Combined effects of these geometrical configurations in heat transfer augmenta- tion are also reported in the literature. In this paper recent developments in experimental and numerical simula- tions of single-phase liquid cooled microchannel have been discussed to analyze the pressure drop, friction and heat transfer characteristics due to different flow conditions, roughness structure and passive surface modifica- tions. It has been observed that the flow disruption techniques are effective for heat transfer enhancement with lower penalties of increased pressure drop. The review concludes with suggestions for future research in this area.
