Timed weighted marked graphs are a subclass of timed Petri nets that have wide applications in the control and performance analysis of flexible manufacturing systems.Due to the existence of multiplicities(i.e.,weights...Timed weighted marked graphs are a subclass of timed Petri nets that have wide applications in the control and performance analysis of flexible manufacturing systems.Due to the existence of multiplicities(i.e.,weights)on edges,the performance analysis and resource optimization of such graphs represent a challenging problem.In this paper,we develop an approach to transform a timed weighted marked graph whose initial marking is not given,into an equivalent parametric timed marked graph where the edges have unitary weights.In order to explore an optimal resource allocation policy for a system,an analytical method is developed for the resource optimization of timed weighted marked graphs by studying an equivalent net.Finally,we apply the proposed method to a flexible manufacturing system and compare the results with a previous heuristic approach.Simulation analysis shows that the developed approach is superior to the heuristic approach.展开更多
This article focuses on the discussion of Chinese topics and English marked theme. It will be divided into four parts. Part I is introduction part. It introduces the concepts of Chinese topic and English marked theme....This article focuses on the discussion of Chinese topics and English marked theme. It will be divided into four parts. Part I is introduction part. It introduces the concepts of Chinese topic and English marked theme. Part II tells different types of Chinese topics and English marked themes. Part III discusses the functions of Chinese topics and English themes. Part IV is the conclusion part.展开更多
Introduction: Endotracheal suction plays a crucial role in the management of mechanically ventilated patients. This study aims to evaluate the clinical effectiveness and safety of suction tubes with markings in mechan...Introduction: Endotracheal suction plays a crucial role in the management of mechanically ventilated patients. This study aims to evaluate the clinical effectiveness and safety of suction tubes with markings in mechanically ventilated pediatric patients. Materials and Methods: A randomized assignment was carried out on a cohort of 52 pediatric patients who underwent mechanical ventilation in the Pediatric Intensive Care Unit at the Third Affiliated Hospital of Sun Yat-sen University, covering the period from January 2022 to December 2022. These patients were divided into two groups: an improved group (n = 26) utilizing marked suction tubes, and a regular group (n = 26) employing conventional suction tubes. The objective of our study was to evaluate the clinical effectiveness of marked suction tubes. Results: The effects of the improved group on the vital signs of children undergoing mechanical ventilation were small and statistically significant compared with the regular group (p < 0.05). Additionally, the improved group exhibited a reduced frequency of sputum suction, shorter mechanical ventilation duration, and fewer days of hospitalization in the PICU compared to the regular group during the ventilation period. Notably, the difference in the duration of PICU hospitalization was statistically significant (p < 0.05). Moreover, the incidence of adverse reactions in the improved group was notably lower, with statistically significant differences observed in airway mucous membrane damage and irritating cough when compared to the regular group (p < 0.05). Conclusion: The utilization of marked suction tubes provides clinical nurses with clear guidance for performing suctioning with ease, efficiency and safety. Consequently, advocating for the widespread implementation of marked suction tubes in clinical practice is a commendable pursuit.展开更多
At the Plant of Production of Radioisotopes part of Nuclear Center of Mexico （ININ）, weekly radiofarmaceutics of sodium iodohippurate and meta-iodobenzyl-guanidine are prepared, these compounds are known as marked m...At the Plant of Production of Radioisotopes part of Nuclear Center of Mexico （ININ）, weekly radiofarmaceutics of sodium iodohippurate and meta-iodobenzyl-guanidine are prepared, these compounds are known as marked molecules with iodine-131. Currently the processes for the preparation of these compounds are carried out individually and in manual form, in box of gloves, presenting radiological risks. To avoid these risks, this work, shows equipment that is inside a warm cell with the finality of minimizing the radiological risks. Also, this semi-automated equipment has the purpose of to reduce the radiation exposure of personnel involved in the process of marking molecules. The routine industrial production with this equipment starts with the preparation of 9 marked doses of sodium iodohippurate of 2.73 mCi of iodine-131, each of the vials with saline solution of 4.5 mL and the product that containing the marked molecules of 0.5 mL with a percentage of marked of 95.6%. The innovation of this work consists in presenting a new design of equipment, for marked molecules, formed by electrical, mechanical, vacuum systems, and air extraction system.展开更多
Carboxymethylpachyman(Ⅰ)was formed by carboxymethylation of β-pachyman.The antitumour activity of carboxymethylpachyman(Ⅰ)against S_(180)、EAC、 MA、U_(14)was measured.The structure of carboxymethylpachyman(Ⅰ)was ...Carboxymethylpachyman(Ⅰ)was formed by carboxymethylation of β-pachyman.The antitumour activity of carboxymethylpachyman(Ⅰ)against S_(180)、EAC、 MA、U_(14)was measured.The structure of carboxymethylpachyman(Ⅰ)was proved by IR ^(13)CNMR spectroscopy.展开更多
The essay first reviews the grammatical cases in English and Chinese,and focus on the nominative case in Chinese.Then it studies Chinese language as Topic-construction.On the basis of the above research,the essay stud...The essay first reviews the grammatical cases in English and Chinese,and focus on the nominative case in Chinese.Then it studies Chinese language as Topic-construction.On the basis of the above research,the essay studies the nominative case assigned to Topic-marked NPs in Modern Chinese according to Jie Xu's theory.展开更多
When a steel plate produced by a steel plant leaves the factory,its upper surface should be marked with the specification,variety,batch number,and other identifying information,and its side should be marked with a sid...When a steel plate produced by a steel plant leaves the factory,its upper surface should be marked with the specification,variety,batch number,and other identifying information,and its side should be marked with a side marking.The side marking contains the plate number,specification,batch number,and other information,which are convenient for customers to accurately identify relevant information after stacking.However,because of the influence of weather,environment,and other factors,the side marking becomes unidentifiable when the steel plate is corroded,affecting the customer’s loading,unloading,and other operations.The development and application of side anticorrosion devices and cleaning of finished heavy steel plates with antirust agents will solve the problem of unrecognizable side marking due to corrosion.展开更多
In handling patent disputes, China observes an operational method of mutual cooperation and coordination through two channels: judicial adjudication and administrative settlement. Over the past decade, practice has pr...In handling patent disputes, China observes an operational method of mutual cooperation and coordination through two channels: judicial adjudication and administrative settlement. Over the past decade, practice has proved that the specific way of handling patent disputes by patent administrative organs has played an important role in the prompt resolu tion of patent disputes, protecting the legitimate rights and interests of patent-展开更多
针对当前集成了不同厂家几套子系统的一些燃驱压缩机组控制系统结构复杂、维护成本高等问题,应用基于Mark VIe控制平台来升级改造该系统。以某改造项目为例,应用双冗余Mark VIe控制系统架构,Mark VIe SIL3模件作为紧急停机和火气保护系...针对当前集成了不同厂家几套子系统的一些燃驱压缩机组控制系统结构复杂、维护成本高等问题,应用基于Mark VIe控制平台来升级改造该系统。以某改造项目为例,应用双冗余Mark VIe控制系统架构,Mark VIe SIL3模件作为紧急停机和火气保护系统的硬件,同时采用Mark VIe ControlST统一软件平台。结果表明:新控制系统采用了一体化硬件、软件设计,提高了机组控制系统的安全可靠性,有利于日常运行维护,而且新系统具有在线监测功能,有助于系统故障排查。展开更多
On Dec. 10, 2009, the International Human Rights Day, Scholars and students inBeijing gathered to commemorate the 61st anniversary of the adoption of the Universal Declaration of Human Rights in China University of Po...On Dec. 10, 2009, the International Human Rights Day, Scholars and students inBeijing gathered to commemorate the 61st anniversary of the adoption of the Universal Declaration of Human Rights in China University of Political Science and Law. The Human Rights and Humanitarian Law Institute of China University of Political Science and Law, the Law School of Renmin University of China, and the LawSchool of Tsinghua University jointly sponsored the commemorations. The commemoration consisted of four parts including ＂the 61 st Anniversary of the Adoption of the Universal Declaration of Human Rights Photo Exhibition＂, ＂Remembrance of the Universal Declaration of Human Rights＂, and relative academic seminars.展开更多
基金supported by the National Natural Science Foundation of China(61803246,61703321)the China Postdoctoral Science Foundation(2019M663608)+2 种基金Shaanxi Provincial Natural Science Foundation(2019JQ-022,2020JQ-733)the Fundamental Research Funds for the Central Universities(JB190407)the Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing,Xi’an University of Technology(SKL2020CP03)。
文摘Timed weighted marked graphs are a subclass of timed Petri nets that have wide applications in the control and performance analysis of flexible manufacturing systems.Due to the existence of multiplicities(i.e.,weights)on edges,the performance analysis and resource optimization of such graphs represent a challenging problem.In this paper,we develop an approach to transform a timed weighted marked graph whose initial marking is not given,into an equivalent parametric timed marked graph where the edges have unitary weights.In order to explore an optimal resource allocation policy for a system,an analytical method is developed for the resource optimization of timed weighted marked graphs by studying an equivalent net.Finally,we apply the proposed method to a flexible manufacturing system and compare the results with a previous heuristic approach.Simulation analysis shows that the developed approach is superior to the heuristic approach.
文摘This article focuses on the discussion of Chinese topics and English marked theme. It will be divided into four parts. Part I is introduction part. It introduces the concepts of Chinese topic and English marked theme. Part II tells different types of Chinese topics and English marked themes. Part III discusses the functions of Chinese topics and English themes. Part IV is the conclusion part.
文摘Introduction: Endotracheal suction plays a crucial role in the management of mechanically ventilated patients. This study aims to evaluate the clinical effectiveness and safety of suction tubes with markings in mechanically ventilated pediatric patients. Materials and Methods: A randomized assignment was carried out on a cohort of 52 pediatric patients who underwent mechanical ventilation in the Pediatric Intensive Care Unit at the Third Affiliated Hospital of Sun Yat-sen University, covering the period from January 2022 to December 2022. These patients were divided into two groups: an improved group (n = 26) utilizing marked suction tubes, and a regular group (n = 26) employing conventional suction tubes. The objective of our study was to evaluate the clinical effectiveness of marked suction tubes. Results: The effects of the improved group on the vital signs of children undergoing mechanical ventilation were small and statistically significant compared with the regular group (p < 0.05). Additionally, the improved group exhibited a reduced frequency of sputum suction, shorter mechanical ventilation duration, and fewer days of hospitalization in the PICU compared to the regular group during the ventilation period. Notably, the difference in the duration of PICU hospitalization was statistically significant (p < 0.05). Moreover, the incidence of adverse reactions in the improved group was notably lower, with statistically significant differences observed in airway mucous membrane damage and irritating cough when compared to the regular group (p < 0.05). Conclusion: The utilization of marked suction tubes provides clinical nurses with clear guidance for performing suctioning with ease, efficiency and safety. Consequently, advocating for the widespread implementation of marked suction tubes in clinical practice is a commendable pursuit.
文摘At the Plant of Production of Radioisotopes part of Nuclear Center of Mexico （ININ）, weekly radiofarmaceutics of sodium iodohippurate and meta-iodobenzyl-guanidine are prepared, these compounds are known as marked molecules with iodine-131. Currently the processes for the preparation of these compounds are carried out individually and in manual form, in box of gloves, presenting radiological risks. To avoid these risks, this work, shows equipment that is inside a warm cell with the finality of minimizing the radiological risks. Also, this semi-automated equipment has the purpose of to reduce the radiation exposure of personnel involved in the process of marking molecules. The routine industrial production with this equipment starts with the preparation of 9 marked doses of sodium iodohippurate of 2.73 mCi of iodine-131, each of the vials with saline solution of 4.5 mL and the product that containing the marked molecules of 0.5 mL with a percentage of marked of 95.6%. The innovation of this work consists in presenting a new design of equipment, for marked molecules, formed by electrical, mechanical, vacuum systems, and air extraction system.
文摘Carboxymethylpachyman(Ⅰ)was formed by carboxymethylation of β-pachyman.The antitumour activity of carboxymethylpachyman(Ⅰ)against S_(180)、EAC、 MA、U_(14)was measured.The structure of carboxymethylpachyman(Ⅰ)was proved by IR ^(13)CNMR spectroscopy.
文摘The essay first reviews the grammatical cases in English and Chinese,and focus on the nominative case in Chinese.Then it studies Chinese language as Topic-construction.On the basis of the above research,the essay studies the nominative case assigned to Topic-marked NPs in Modern Chinese according to Jie Xu's theory.
文摘When a steel plate produced by a steel plant leaves the factory,its upper surface should be marked with the specification,variety,batch number,and other identifying information,and its side should be marked with a side marking.The side marking contains the plate number,specification,batch number,and other information,which are convenient for customers to accurately identify relevant information after stacking.However,because of the influence of weather,environment,and other factors,the side marking becomes unidentifiable when the steel plate is corroded,affecting the customer’s loading,unloading,and other operations.The development and application of side anticorrosion devices and cleaning of finished heavy steel plates with antirust agents will solve the problem of unrecognizable side marking due to corrosion.
文摘In handling patent disputes, China observes an operational method of mutual cooperation and coordination through two channels: judicial adjudication and administrative settlement. Over the past decade, practice has proved that the specific way of handling patent disputes by patent administrative organs has played an important role in the prompt resolu tion of patent disputes, protecting the legitimate rights and interests of patent-
文摘针对当前集成了不同厂家几套子系统的一些燃驱压缩机组控制系统结构复杂、维护成本高等问题,应用基于Mark VIe控制平台来升级改造该系统。以某改造项目为例,应用双冗余Mark VIe控制系统架构,Mark VIe SIL3模件作为紧急停机和火气保护系统的硬件,同时采用Mark VIe ControlST统一软件平台。结果表明:新控制系统采用了一体化硬件、软件设计,提高了机组控制系统的安全可靠性,有利于日常运行维护,而且新系统具有在线监测功能,有助于系统故障排查。
文摘On Dec. 10, 2009, the International Human Rights Day, Scholars and students inBeijing gathered to commemorate the 61st anniversary of the adoption of the Universal Declaration of Human Rights in China University of Political Science and Law. The Human Rights and Humanitarian Law Institute of China University of Political Science and Law, the Law School of Renmin University of China, and the LawSchool of Tsinghua University jointly sponsored the commemorations. The commemoration consisted of four parts including ＂the 61 st Anniversary of the Adoption of the Universal Declaration of Human Rights Photo Exhibition＂, ＂Remembrance of the Universal Declaration of Human Rights＂, and relative academic seminars.
