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| 1 | Micromachined Infrared Thermopile Detector Based on a Suspended Film Structure显示文摘The micro-electromechanical system(MEMS)infrared thermopile is the core working device of modern information detection systems such as spectrometers,gas sensors,and remote temperature sensors.We presented two different structures of MEMS infrared thermopiles based on suspended film structures.They both deposited silicon nitride over the entire surface as a passivated absorber layer in place of a separate absorber zone,and the thermocouple strip was oriented in the same direction as the temperature gradient.The same MEMS preparation process was used and finally two different structures of the thermopile were characterized separately for testing to verify the impact of our design on the detector.The test results show that the circular and double-ended symmetrical thermopile detectors have responsivities of 27.932 V/W and 23.205 V/W,specific detectivities of 12.1×10^(7) cm·Hz^(1/2)·W^(-1) and 10.1×10^(7) cm·Hz^(1/2)·W^(-1),and response time of 26.2 ms and 27.06 ms,respectively.In addition,rectangular double-ended symmetric thermopile has a larger field of view than a circular thermopile detector,but is not as mechanically stable as a circular thermopile. | Cheng LEI Yihao GUAN Ting LIANG Xuezhan WU Yuehang BAI Mingfeng GONG Pingang JIA Jijun XIONG | 2023 | Photonic Sensors2023，13，3： | 0 |
| 2 | Effect of remimazolam vs. propofol on hemodynamics during general anesthesia induction in elderly patients: Single-center, randomized controlled trial显示文摘The current study aimed to compare the effects between remimazolam and propofol on hemodynamic stability during the induction of general anesthesia in elderly patients.We used propofol at a rate of 60 mg/(kg·h)in the propofol group(group P)or remimazolam at a rate of 6 mg/(kg·h)in the remimazolam group(group R)for the induction.A processed electroencephalogram was used to determine whether the induction was successful and when to stop the infusion of the study drug.We measured when patients entered the operating room(T_(0)),when the induction was successful(T_(1)),and when before(T_(2))and 5 min after successful endotracheal intubation(T_(3)).We found that mean arterial pressure(MAP)was lower at T_(1–3),compared with T_(0) in both groups,but higher at T_(2) in the group R,whileΔMAP_(T0–T2) andΔMAP_(max) were smaller in the group R(ΔMAP_(T0–T2):the difference between MAP at time point T_(0) and T_(2),ΔMAP_(max):the difference between MAP at time point T_(0) and the lowest value from T_(0) to T_(3)).Cardiac index and stroke volume index did not differ between groups,whereas systemic vascular resistance index was higher at T_(1–3) in the group R.These findings show that remimazolam,compared with propofol,better maintains hemodynamic stability during the induction,which may be attributed to its ability to better maintain systemic vascular resistance levels. | Mingfeng He Chanjuan Gong Yinan Chen Rongting Chen Yanning Qian | 2024 | The Journal of Biomedical Research2024，38，1： | 0 |
| 3 | Growth hormone promotes the reconstruction of injured axons in the hypothalamo-neurohypophyseal system显示文摘Previous studies have shown that growth hormone can regulate hypothalamic energy metabolism, stress, and hormone release. Therefore, growth hormone has great potential for treating hypothalamic injury. In this study, we established a specific hypothalamic axon injury model by inducing hypothalamic pituitary stalk electric lesions in male mice. We then treated mice by intraperitoneal administration of growth hormone. Our results showed that growth hormone increased the expression of insulin-like growth factor 1 and its receptors, and promoted the survival of hypothalamic neurons, axonal regeneration, and vascular reconstruction from the median eminence through the posterior pituitary. Altogether, this alleviated hypothalamic injury-caused central diabetes insipidus and anxiety. These results suggest that growth hormone can promote axonal reconstruction after hypothalamic injury by regulating the growth hormone-insulin-like growth factor 1 axis. | Kai Li Zhanpeng Feng Zhiwei Xiong Jun Pan Mingfeng Zhou Weizhao Li Yichao Ou Guangsen Wu Mengjie Che Haodong Gong Junjie Peng Xingqin Wang Songtao Qi Junxiang Peng | 2024 | Neural Regeneration Research2024，19，10： | 0 |
| 4 | Practice Research on Standardization of Undergraduate Graduation Design of Tunnel and Underground Engineering显示文摘Graduation project(thesis)is an important practice part in undergraduate education,which forms an organic whole with theoretical teaching link,and it is the continuation,deepening and examination of the theoretical teaching part.This paper focuses on the constitution that the lack of quality standards for undergraduate graduation design,resulting in different depth and breadth standards;the graduation design materials are scattered and lack of standardization,which leads to the lack of systematic reference materials for students,taking the tunnel and underground engineering major as an example,this paper carries out the practice research on the standardization of the graduation design of tunnel and underground engineering through investigation and combining the teaching resources accumulated in the past decades.Through the study of practice,the content of undergraduate graduation design of tunnel and underground engineering is standardized,the breadth and depth of graduation design is defined,and the“Guide for undergraduate graduation design of tunnel and underground engineering”is organized and compiled,which can provide reference for the standardization and guidance of undergraduate graduation design of tunnel and underground engineering. | Mingfeng Lei Weidong Wang Chenghua Shi Chaojun Jia Chenjie Gong | 2022 | Journal of Educational Theory and Management2022，6，1： | 0 |
| 5 | Research and Practice of Online Teaching Methods in Universities in the Context of COVID-19显示文摘In order to effectively prevent the spread of novel coronavirus pneumonia and ensure the orderly development of teaching tasks,colleges and universities have launched online teaching activities.As a new teaching method,how to reasonably carry out teaching design,teaching organization and ensure teaching quality has become a new problem in front of educators.Taking the“Subway”course as an example,this paper summarizes and introduces the online teaching methods and personal experience under the epidemic situation from the aspects of the overall framework design,specific implementation scheme,effect investigation and reflection of the online teaching mode based on MOOC platform,so as to enrich the experience of online teaching activities in colleges and universities during the epidemic period. | Mingfeng Lei Chenghua Shi Weidong Wang Chenjie Gong Chaojun Jia | 2022 | Journal of Educational Theory and Management2022，6，1： | 0 |
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