Previous studies have shown that visual cortical neurons in old mammals exhibit higher spontaneous activity,higher responsiveness to visual stimuli,and lower selectivity for stimulus orientations and motion directions...Previous studies have shown that visual cortical neurons in old mammals exhibit higher spontaneous activity,higher responsiveness to visual stimuli,and lower selectivity for stimulus orientations and motion directions than did neurons in young adult counterparts.However,whether the responsive difference in cortical neurons between young and old animals resulted from different effects induced by anesthetics has remained unclear.To clarify this issue,we recorded the response properties of individual neurons in the primary visual cortex of old and young adult cats while systematically varying the anesthesia level of urethane,a widely used anesthetic in physiology experiments.Our results showed that cumulatively administrating 50 mg and 100 mg of urethane upon the minimal level of urethane required to anesthetize an old or young adult cat did not significantly alter the degree of neuronal response selectivity for stimulus orientations and motion directions nor significantly change the visually-driven response and spontaneous activity of neurons in old and young adult cats.Cumulatively administrating 150 mg of urethane decreased neuronal responsiveness similarly in both age groups.Therefore,urethane appears to exert similar effects on neuronal response properties of old and young adult animals.展开更多
Runge-Kutta scheme is one of the versatile numerical tools for the simulation of engineering systems. Despite its wide and acceptable engineering use, there is dearth of relevant literature bordering on visual impress...Runge-Kutta scheme is one of the versatile numerical tools for the simulation of engineering systems. Despite its wide and acceptable engineering use, there is dearth of relevant literature bordering on visual impression possibility among different schemes coefficients which is the strong motivation for the present investigation of the third and fourth order schemes. The present study capitalise on results of tedious computation involving Taylor series expansion equivalent supplemented with Butcher assumptions and constraint equations of well-known works which captures the essential relationship between the coefficients. The simulation proceeds from random but valid specification of two out of the total coefficients possible per scheme. However the remaining coefficients are evaluated with application of appropriate function relationship. Eight and thirteen unknown coefficients were simulated respectively for third and fourth schemes over a total of five thousand cases each for relevant distribution statistics and scatter plots analysis for the purpose of scheme comparison and visual import. The respective three and four coefficients of the slope estimate for the third and fourth schemes have mix sign for large number of simulated cases. However, none of the two schemes have above three of these coefficients lesser than zero. The percentages of simulation results with two coefficients lesser than zero dominate and are respectively 56.88 and 77.10 for third and fourth schemes. It was observed that both popular third and fourth schemes belong to none of the coefficients being zero classification with respective percentage of 0.72 and 3.28 intotal simulated cases. The comparisons of corresponding scatter plots are visually exciting. The overall difference between corresponding scatter plots and distribution results can be used to justify the accuracy of fourth scheme over its counterpart third scheme.展开更多
Objective: to study the clinical application effect of visual painless artificial abortion and conventional artificial abortion in artificial abortion. Methods: during the period from January 2018 to January 2020, 100...Objective: to study the clinical application effect of visual painless artificial abortion and conventional artificial abortion in artificial abortion. Methods: during the period from January 2018 to January 2020, 100 pregnant women who underwent artificial abortion in our hospital were selected as the research objects and randomly divided into the observation group and the control group with 50 in each group. The pregnant women in the observation group underwent visual painless artificial abortion, while those in the control group underwent conventional painless artificial abortion. The postoperative recovery, abortion and the probability of complications of the two groups were observed, and the advantages and disadvantages of the two surgical methods were analyzed. Results: comparing the data of the two groups, it can be seen that the operation time of abortion in the observation group is less than that in the control group, and the amount of hemorrhage in the operation is also less than that in the control group. The incidence of complications in the observation group is lower than that in the control group, and the satisfaction degree of pregnant women and their families to the operation is higher than that in the control group, P < 0.05. Conclusion: visual painless artificial abortion surgery can effectively increase the therapeutic effect compared with conventional abortion surgery, with shorter operation time, less bleeding during the operation and higher safety. It can also reduce complications and alleviate the pain of pregnant women, and is very worthy of promotion and use.展开更多
Objective:To assess the effectiveness of a visual double-lumen bronchial catheter in teaching lung isolation skills to anesthesia resident trainees.Methods:Between September 2023 and September 2024,20 anesthesiology r...Objective:To assess the effectiveness of a visual double-lumen bronchial catheter in teaching lung isolation skills to anesthesia resident trainees.Methods:Between September 2023 and September 2024,20 anesthesiology residents from Jiangsu Cancer Hospital were randomly divided into two groups:the visual double-lumen group(n=10)and the conventional double-lumen group(n=10).Randomization was achieved using a random number table.The study assessed several outcomes,including total intubation time,positioning time,one-time intubation success rate,intraoperative catheter displacement rate,surgeon satisfaction scores,and the incidence of postoperative complications(pharyngeal pain,hoarseness,and dry cough)within 24 hours.Results:The visual double-lumen group demonstrated superior results compared to the conventional double-lumen group in the following measures:total intubation time(70.2±11.8 s vs 224.9±35.6 s),positioning time(30.1±5.7s vs 176.6±26.4 s),one-time intubation success rate(85%vs 45%),intraoperative catheter displacement rate(10%vs 40%),surgeon’s intubation satisfaction score(8.10±1.07 vs 6.90±1.41),satisfaction score for pulmonary isolation(8.35±1.04 vs 6.55±1.36),and airway management satisfaction score(8.40±1.3 vs 6.70±1.34).Additionally,the incidence of postoperative pharyngeal pain(15%vs 45%),hoarseness(10%vs 40%),and dry cough(5%vs 35%)was significantly lower in the visual double-lumen group(all P<0.05).Conclusion:The visual double-lumen bronchial catheter significantly enhances the training of anesthesia residents in lung isolation by reducing intubation and positioning times,improving intubation success rate,increasing surgeon satisfaction,and reducing intubation-related complications.This method offers a more effective teaching approach compared to conventional techniques.展开更多
An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, clo...An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.展开更多
Neurons in the nervous system make connections with ascending feedforward projections and descending feedback projections,as well as projections from neural structures at the identical hierarchical level.These neurons...Neurons in the nervous system make connections with ascending feedforward projections and descending feedback projections,as well as projections from neural structures at the identical hierarchical level.These neurons form extremely complicated neural networks and pathways.Compared with the role of the feedforward projection,much less is known concerning the functional roles of the feedback projection.Visual cortex is a good model for studying functional roles of cortical feedback projections which involve many high functions,such as attention,searching and cognition.The present review mainly focused on the functional roles of feedback projections in the visual system.展开更多
目的:基于文献计量学分析榄香烯相关研究领域的发展现状和发展态势。方法:从中国知网(CNKI)和Web of Science核心合集中检索2004—2024年榄香烯研究领域的相关文献,运用CiteSpace和VOSviewer进行文献计量学与可视化分析。结果:共纳入文...目的:基于文献计量学分析榄香烯相关研究领域的发展现状和发展态势。方法:从中国知网(CNKI)和Web of Science核心合集中检索2004—2024年榄香烯研究领域的相关文献,运用CiteSpace和VOSviewer进行文献计量学与可视化分析。结果:共纳入文献1 821篇,其中中文文献462篇,英文文献1 359篇。相比之下,英文文献发文量较大且总体呈逐年上升趋势。中英文发文量均为第一的作者为杭州师范大学的谢恬,其所在单位杭州师范大学也是英文文献发文量第一的科研机构。中英文关键词显示,榄香烯的研究热点主要集中于活性成分分析、榄香烯衍生产品和抗肿瘤作用。主要成分“β-榄香烯”为中英文文献中出现频数最高的关键词。结论:榄香烯相关研究领域目前仍处于上升阶段,发展前景良好,因此应深度剖析榄香烯的可能作用机制和临床应用,充分发挥其疗效优势和临床价值以推动中医药的传承创新发展。展开更多
基金Supported by Natural Science Foundation of Anhui Province (070413138)the Key Research Foundation of Anhui Province Education Department (KJ2009A167)
文摘Previous studies have shown that visual cortical neurons in old mammals exhibit higher spontaneous activity,higher responsiveness to visual stimuli,and lower selectivity for stimulus orientations and motion directions than did neurons in young adult counterparts.However,whether the responsive difference in cortical neurons between young and old animals resulted from different effects induced by anesthetics has remained unclear.To clarify this issue,we recorded the response properties of individual neurons in the primary visual cortex of old and young adult cats while systematically varying the anesthesia level of urethane,a widely used anesthetic in physiology experiments.Our results showed that cumulatively administrating 50 mg and 100 mg of urethane upon the minimal level of urethane required to anesthetize an old or young adult cat did not significantly alter the degree of neuronal response selectivity for stimulus orientations and motion directions nor significantly change the visually-driven response and spontaneous activity of neurons in old and young adult cats.Cumulatively administrating 150 mg of urethane decreased neuronal responsiveness similarly in both age groups.Therefore,urethane appears to exert similar effects on neuronal response properties of old and young adult animals.
文摘Runge-Kutta scheme is one of the versatile numerical tools for the simulation of engineering systems. Despite its wide and acceptable engineering use, there is dearth of relevant literature bordering on visual impression possibility among different schemes coefficients which is the strong motivation for the present investigation of the third and fourth order schemes. The present study capitalise on results of tedious computation involving Taylor series expansion equivalent supplemented with Butcher assumptions and constraint equations of well-known works which captures the essential relationship between the coefficients. The simulation proceeds from random but valid specification of two out of the total coefficients possible per scheme. However the remaining coefficients are evaluated with application of appropriate function relationship. Eight and thirteen unknown coefficients were simulated respectively for third and fourth schemes over a total of five thousand cases each for relevant distribution statistics and scatter plots analysis for the purpose of scheme comparison and visual import. The respective three and four coefficients of the slope estimate for the third and fourth schemes have mix sign for large number of simulated cases. However, none of the two schemes have above three of these coefficients lesser than zero. The percentages of simulation results with two coefficients lesser than zero dominate and are respectively 56.88 and 77.10 for third and fourth schemes. It was observed that both popular third and fourth schemes belong to none of the coefficients being zero classification with respective percentage of 0.72 and 3.28 intotal simulated cases. The comparisons of corresponding scatter plots are visually exciting. The overall difference between corresponding scatter plots and distribution results can be used to justify the accuracy of fourth scheme over its counterpart third scheme.
文摘Objective: to study the clinical application effect of visual painless artificial abortion and conventional artificial abortion in artificial abortion. Methods: during the period from January 2018 to January 2020, 100 pregnant women who underwent artificial abortion in our hospital were selected as the research objects and randomly divided into the observation group and the control group with 50 in each group. The pregnant women in the observation group underwent visual painless artificial abortion, while those in the control group underwent conventional painless artificial abortion. The postoperative recovery, abortion and the probability of complications of the two groups were observed, and the advantages and disadvantages of the two surgical methods were analyzed. Results: comparing the data of the two groups, it can be seen that the operation time of abortion in the observation group is less than that in the control group, and the amount of hemorrhage in the operation is also less than that in the control group. The incidence of complications in the observation group is lower than that in the control group, and the satisfaction degree of pregnant women and their families to the operation is higher than that in the control group, P < 0.05. Conclusion: visual painless artificial abortion surgery can effectively increase the therapeutic effect compared with conventional abortion surgery, with shorter operation time, less bleeding during the operation and higher safety. It can also reduce complications and alleviate the pain of pregnant women, and is very worthy of promotion and use.
文摘Objective:To assess the effectiveness of a visual double-lumen bronchial catheter in teaching lung isolation skills to anesthesia resident trainees.Methods:Between September 2023 and September 2024,20 anesthesiology residents from Jiangsu Cancer Hospital were randomly divided into two groups:the visual double-lumen group(n=10)and the conventional double-lumen group(n=10).Randomization was achieved using a random number table.The study assessed several outcomes,including total intubation time,positioning time,one-time intubation success rate,intraoperative catheter displacement rate,surgeon satisfaction scores,and the incidence of postoperative complications(pharyngeal pain,hoarseness,and dry cough)within 24 hours.Results:The visual double-lumen group demonstrated superior results compared to the conventional double-lumen group in the following measures:total intubation time(70.2±11.8 s vs 224.9±35.6 s),positioning time(30.1±5.7s vs 176.6±26.4 s),one-time intubation success rate(85%vs 45%),intraoperative catheter displacement rate(10%vs 40%),surgeon’s intubation satisfaction score(8.10±1.07 vs 6.90±1.41),satisfaction score for pulmonary isolation(8.35±1.04 vs 6.55±1.36),and airway management satisfaction score(8.40±1.3 vs 6.70±1.34).Additionally,the incidence of postoperative pharyngeal pain(15%vs 45%),hoarseness(10%vs 40%),and dry cough(5%vs 35%)was significantly lower in the visual double-lumen group(all P<0.05).Conclusion:The visual double-lumen bronchial catheter significantly enhances the training of anesthesia residents in lung isolation by reducing intubation and positioning times,improving intubation success rate,increasing surgeon satisfaction,and reducing intubation-related complications.This method offers a more effective teaching approach compared to conventional techniques.
基金Project(51274250)supported by the National Natural Science Foundation of ChinaProject(2012BAK09B02-05)supported by the National Key Technology R&D Program during the 12th Five-year Plan of China
文摘An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.
基金supported by the National Natural Science Foundation of China(No.90208013)Shanghai Leading Academic Project B111 and"211"Projectof Ministry of Education of China
文摘Neurons in the nervous system make connections with ascending feedforward projections and descending feedback projections,as well as projections from neural structures at the identical hierarchical level.These neurons form extremely complicated neural networks and pathways.Compared with the role of the feedforward projection,much less is known concerning the functional roles of the feedback projection.Visual cortex is a good model for studying functional roles of cortical feedback projections which involve many high functions,such as attention,searching and cognition.The present review mainly focused on the functional roles of feedback projections in the visual system.
文摘目的:基于文献计量学分析榄香烯相关研究领域的发展现状和发展态势。方法:从中国知网(CNKI)和Web of Science核心合集中检索2004—2024年榄香烯研究领域的相关文献,运用CiteSpace和VOSviewer进行文献计量学与可视化分析。结果:共纳入文献1 821篇,其中中文文献462篇,英文文献1 359篇。相比之下,英文文献发文量较大且总体呈逐年上升趋势。中英文发文量均为第一的作者为杭州师范大学的谢恬,其所在单位杭州师范大学也是英文文献发文量第一的科研机构。中英文关键词显示,榄香烯的研究热点主要集中于活性成分分析、榄香烯衍生产品和抗肿瘤作用。主要成分“β-榄香烯”为中英文文献中出现频数最高的关键词。结论:榄香烯相关研究领域目前仍处于上升阶段,发展前景良好,因此应深度剖析榄香烯的可能作用机制和临床应用,充分发挥其疗效优势和临床价值以推动中医药的传承创新发展。
