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Influence of preoperative comprehensive education on anxiety,depression,pain,and sleep in elderly patients operated under general anesthesia
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作者 Li Qu Rui Ma +5 位作者 Yan-Kai Ma Xuan Zhao Jing Jin Qian-Qian Zhu Xue-Ying Chen Gui-Ping Xu 《World Journal of Psychiatry》 SCIE 2024年第12期1845-1853,共9页
BACKGROUND Owing to the particularities of their physical characteristics,older patients undergoing surgery under general anesthesia experience great surgical traumas.Thus,exploring more refined and individualized nur... BACKGROUND Owing to the particularities of their physical characteristics,older patients undergoing surgery under general anesthesia experience great surgical traumas.Thus,exploring more refined and individualized nursing approaches is an urgent need to mitigate the negative effects of surgery on such patients.AIM To analyze the influence of preoperative comprehensive education on anxiety,depression,pain,and sleep in older patients who underwent surgery under general anesthesia.METHODS In total,163 older adults who underwent surgery under general anesthesia between June 2022 and November 2023 were selected,77 of them received routine nursing care(control group),and 86 received preoperative comprehensive education(research group).Subsequently,comparative analyses were performed from the following perspectives:Surgical indicators(operation time,time to complete regain of consciousness,and temperature immediately after the procedure and upon recovery from anesthesia)before and after nursing care;negative emotions[self-rating anxiety scale(SAS)/self-rating depression scale(SDS)];pain severity[visual analog scale(VAS)];sleep quality[Pittsburgh sleep quality index(PSQI)];incidence of sleep disturbances(difficulties in falling asleep for the first time,falling asleep again after waking up frequently at night,falling asleep again after waking up early,and falling asleep all night);and incidence of adverse events(airway obstruction,catheter detachment,aspiration,and asphyxia).RESULTS The research group had significantly lower operation time and time to complete regain of consciousness than the control group after nursing care and markedly better recovery of postoperative body temperature and body temperature at awakening.In addition,more notable decreases in SAS,SDS,VAS,and PSQI scores were observed in the research group than in the control group.Furthermore,the incidence rate of sleep disturbance(8.14%vs 29.87%)and adverse events(4.65%vs 19.48%)were lower in the research group than in the control group.CONCLUSION Preoperative comprehensive education in older patients who underwent surgery under general anesthesia can improve postoperative indicators,effectively reduce the occurrence of anxiety and depression,alleviate postoperative pain,and improve sleep quality. 展开更多
关键词 Preoperative comprehensive education Surgery under general anesthesia Elderly patients Anxiety and depression PAIN SLEEP
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Exploration of the Integration of Curriculum Ideology and Politics into the Educational Pathway of Standardized Training for General Practice Residents
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作者 Zhuan Huang Yaodong Li +4 位作者 Lina Ma Rui Xu Fang Yang Yingpeng Shi Junlin Liu 《Journal of Contemporary Educational Research》 2024年第5期91-96,共6页
In recent years,the national higher education reform has proposed the concept of curriculum ideological and political education as a major element.This integration into the standardized training of general practice re... In recent years,the national higher education reform has proposed the concept of curriculum ideological and political education as a major element.This integration into the standardized training of general practice residents(commonly referred to as general resident training)is an unavoidable trend in the teaching field.Based on the actual situation of our unit at The First Affiliated Hospital of Xi’an Medical University,this paper emphasizes the necessity of incorporating ideological and political education into the general resident training curriculum,despite the absence of pertinent practical experience in how to effectively incorporate such courses into comprehensive residential training.In our hospital,we must assess the ideological and political education in the curriculum of general resident training,proposing a scientific,reasonable ideological and political education concept system for general practice courses,integrating ideological and political education with general practice resident training,and strengthening the team of ideological and political education physicians to teach them to carry out such education,this would foster enthusiasm and initiative.Strengthening admission education and training for general practice resident training,as well as regularly hosting symposiums to share ideas and understand the mission of doctors can provide effective experience for ideological and political education in general resident training courses. 展开更多
关键词 Curriculum ideological and political education general practice general practice residents Standardized training education path EXPLORATION
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A combination therapy of ethanol injection and radiofrequency ablation under general anesthesia for the treatment of hepatocellular carcinoma 被引量:10
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作者 Kazutaka Kurokohchi Seishiro Watanabe +8 位作者 Hirohito Yoneyama Akihiro Deguchi Tsutomu Masaki Takashi Himoto Hisaaki Miyoshi Hamdy Saad Mohammad Akira Kitanaka Tomohiko Taminato Shigeki Kuriyama 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第13期2037-2043,共7页
AIM: To summarize the effects of laparoscopic ethanol injection and radiofrequency ablation (L-EI-RFA), thora- coscopic (T-EI-RFA) and open-surgery assisted EI-RFA (O-EI-RFA) under general anesthesia for the treatment... AIM: To summarize the effects of laparoscopic ethanol injection and radiofrequency ablation (L-EI-RFA), thora- coscopic (T-EI-RFA) and open-surgery assisted EI-RFA (O-EI-RFA) under general anesthesia for the treatment of hepatocellular carcinoma (HCC). METHODS: Time-lag performance of RFA after ethanol injection (Time-lag PEI-RFA) was performed in all cases. The volume of coagulated necrosis and the applied en- ergy for total and per unit volume coagulated necrosis were examined in the groups treated under general (group G) or local anesthesia (group L). RESULTS: The results showed that the total applied energy and the applied energy per unit volume of whole and marginal, coagulated necrosis were significantly larger in group G than those in the group L, resulting in a larger volume of coagulated necrosis in the group G. The rate of local tumor recurrence within one year was extremely low in group G. CONCLUSION: These results suggest that EI-RFA, un- der general anesthesia, may be effective for the treat- ment of HCC because a larger quantity of ethanol and energy could be applied during treatment under pain- free condition for the patients. 展开更多
关键词 combination therapy Ethanol injection Radiofrequency ablation general anesthesia Local anesthesia
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A Comparative Study of School-enterprise Cooperation and Work-study Combination System Construction in Vocational Education at Home and Abroad 被引量:1
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作者 Huang Juan 《教育研究前沿(中英文版)》 2019年第3期23-27,共5页
In this paper, based on the experience and practice of school-enterprise cooperation in developed countries, the current situation ofschool-enterprise cooperation in China was studied. Through analysis and comparison,... In this paper, based on the experience and practice of school-enterprise cooperation in developed countries, the current situation ofschool-enterprise cooperation in China was studied. Through analysis and comparison, the mode of school-enterprise cooperationsuitable for higher vocational education in China was explored to promote the development of higher vocational education inChina. The current situation and existing problems of work-study integration in higher vocational education in China wereanalyzed, and different modes of work-study combination in foreign higher vocational education were compared. Under thecurrent situation, earnestly studying and drawing lessons from the experience of foreign developed countries is of greatsignificance to the continuing development of school-enterprise cooperation and the talent training mode of work-studycombination in national model colleges and key universities. 展开更多
关键词 School-Enterprise Cooperation Work-Study combination Vocational education
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Research on Chinese Education Philosophy of "Truth, Kindness, and Aesthetics Combination "
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作者 龚丹 《海外英语》 2011年第15期95-97,共3页
Chinese Education Philosophy of "Truth, Kindness, and Aesthetics Combination" manifests in the research on Chinese education from aesthetics perspective. It aims at the "narrow and limited view" of... Chinese Education Philosophy of "Truth, Kindness, and Aesthetics Combination" manifests in the research on Chinese education from aesthetics perspective. It aims at the "narrow and limited view" of "not the general aesthetics, but the artistic beauty only", and it aims at biased opinion of "the interest saying", "the fine arts saying", "the esthetic sense saying" on aesthetics. It also aims at serious distraction of "LEFT in form but RIGHT in essence" of the mainstream ideology "the thought", "the revolution", "politics" and so on. It is a complex study of Chinese education from the philosophy of the unity of Truth, Kindness, and Aesthetics of oriental aesthetics, the consensus of Truth, Kindness, and Aesthetics of Western aesthetics, and the identity of Truth, Kindness, and Aesthetics of Marx aesthetics. From aesthetics perspective, it studies Chinese education, "combing" the reversed relationships among "truth", "kindness" and "aesthetics" in Chinese, adopting the methods of "research with great ease", "cases study", and "combination of ration and perception", to achieve "truth" of in Chinese, "kindness" of and "aesthetics" of , promote the development of "Chinese intellectual education", "Chinese moral education", and "Chinese aesthetic education" harmoniously, to realize the "Truth, Kindness, and Aesthetics Combination" of Chinese education and to reach the brand-new boundary territory of "human development and integrity construction" effectively. 展开更多
关键词 Chinese education PHILOSOPHY Truth Kindness and AESTHETICS combination Ideal target Brand-new boundary territory
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An analysis of British and American literature education from the perspective of integration of general education and professional education
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作者 Xijun Xu 《International Journal of Technology Management》 2017年第3期64-66,共3页
In foreign language teaching in colleges, British and American literature is a key course. In this paper, we first described the literature status of English curriculum system in colleges and universities, then based ... In foreign language teaching in colleges, British and American literature is a key course. In this paper, we first described the literature status of English curriculum system in colleges and universities, then based on the analysis of British and American literature teaching mode of quality education, puts forward some corresponding measures. General education, as a universal education for all students, is an important part of education reform. In the general education system of colleges and universities, the setting up of foreign language courses plays an important role and value. British and American literature is an important part of foreign language teaching, but also an important way to improve students' humanistic quality. 展开更多
关键词 general education professional education model construction APPLICATION teaching mode.
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A Comparative Study of School-enterprise Cooperation and Work-study Combination System Construction in Vocational Education at Home and Abroad
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作者 Huang Juan 《管理科学与研究(中英文版)》 2019年第1期78-81,共4页
In this paper, based on the experience and practice of school-enterprise cooperation in developed countries, the current situation of school-enterprise cooperation in China was studied. Through analysis and comparison... In this paper, based on the experience and practice of school-enterprise cooperation in developed countries, the current situation of school-enterprise cooperation in China was studied. Through analysis and comparison, the mode of school-enterprise cooperation suitable for higher vocational education in China was explored to promote the development of higher vocational education in China. The current situation and existing problems of work-study integration in higher vocational education in China were analyzed, and different modes of work-study combination in foreign higher vocational education were compared. Under the current situation, earnestly studying and drawing lessons from the experience of foreign developed countries is of great significance to the continuing development of school-enterprise cooperation and the talent training mode of work-study combination in national model colleges and key universities. 展开更多
关键词 School-enterprise cooperation Work-study combination VOCATIONAL education
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The Probe into the Methods of Implementing General Education in Application-oriented Civilian-run Colleges and Universities
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作者 Nini Huang 《International Journal of Technology Management》 2017年第1期4-6,共3页
This paper conducts the probe into the methods of implementing the general education in application-oriented civilian-run colleges and universities. As the basic education for the construction of high-quality teachers... This paper conducts the probe into the methods of implementing the general education in application-oriented civilian-run colleges and universities. As the basic education for the construction of high-quality teachers more and more urgent, how to make application-oriented colleges and universities teacher education in the personnel training level and training mode to meet the basic education development needs. Therefore, accomplishes the counted by the 100 million high quality worker diligently, ten million counts the professional personnel and a large quantities of best pick of the crop innovation talented person, specially raises the considerable amount to stress in the practical work department on the solution actual problem high level. Compared with the state-of-the-art core applications, this paper’s idea is novel and effective. 展开更多
关键词 general education Application-oriented Civilian-run COLLEGES
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A Comparative Study of General Education Between China’s and Singapore’s Universities
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作者 Yunfei Yang 《Journal of Contemporary Educational Research》 2020年第10期76-79,共4页
Along with the development of knowledgebased economy,interdisciplinary talents have received widespread attention.While teaching students professional knowledge,universities also focus on general education.By studying... Along with the development of knowledgebased economy,interdisciplinary talents have received widespread attention.While teaching students professional knowledge,universities also focus on general education.By studying the education objectives and curriculum of China and Singapore,this paper makes a comparative analysis of the similarities and differences between UESTC and NTU in terms of general education objectives and curriculum design,so as to provide certain references for universities,especially science and engineering universities,and to further improve general education. 展开更多
关键词 general education education Objective Curriculum System
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The Department of Otolaryngology Head and Neck Surgery,PLA General Hospital (national key academic unit) The PLA Institute of Otolaryngology (PLA key laboratory for acoustic trauma) The PLA Medical College Department of Deafness Education Key Laboratory
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《Journal of Otology》 2013年第1期77-81,共4页
Led by four generations of leadership from late Prof.JIANG Sichang(academician,Chinese Academy of Engineering),Prof.YANG Weiyan(Honorary President,Division of Otolaryngology Head and Neck Surgery,Chinese Medical Assoc... Led by four generations of leadership from late Prof.JIANG Sichang(academician,Chinese Academy of Engineering),Prof.YANG Weiyan(Honorary President,Division of Otolaryngology Head and Neck Surgery,Chinese Medical Association),Prof.HAN Dongyi(President Elected,Division of Otolaryngology Head and Neck Surgery,Chinese Medical Association)to now Prof.YANG Shiming(President,Division of Otolaryngologists, 展开更多
关键词 PLA key laboratory for acoustic trauma The Department of Otolaryngology Head and Neck Surgery PLA general Hospital The PLA Institute of Otolaryngology The PLA Medical College Department of Deafness education Key Laboratory national key academic unit
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Research on the General and Professional Integrated Education at Universities under the Background of Engineering Education Accred­itation
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作者 Shaojie Zhao Daiqiang Deng Wang Liu 《Journal of Educational Theory and Management》 2022年第1期81-87,共7页
Under the background of“Engineering Education Accreditation”,it is of great significance to carry out the general and professional integrated education at universities.This paper discusses the epoch connotation of g... Under the background of“Engineering Education Accreditation”,it is of great significance to carry out the general and professional integrated education at universities.This paper discusses the epoch connotation of general education at universities and the necessity of developing general education in the professional courses of the universities.The conceptual characteristics,practice modes and ways of carrying out the general and professional integrated education at universities under the background of Engineering Education Accreditation are discussed.Finally,an example is given to verify the feasibility and implementation effect of carrying out general education in professional courses of university,so as to provide references for the development of the general and professional integrated education at universities in the new era. 展开更多
关键词 general and professional integrated education Model general education Engineering education Accreditation CONNOTATION
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Current Situation of the Teaching of Ophthalmology in General Practice Medical Education and the Application of TBL
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作者 Rong Li Chuntao Xing +2 位作者 Ying Deng Cong Jiao Guomin Yao 《Journal of Contemporary Educational Research》 2022年第4期108-113,共6页
Ophthalmology is an integral part of general practice education,and it is of great significance to have some knowledge on ophthalmology even if the general practitioner is not an ophthalmologist.The subject characteri... Ophthalmology is an integral part of general practice education,and it is of great significance to have some knowledge on ophthalmology even if the general practitioner is not an ophthalmologist.The subject characteristics,the traditional mode of teaching,and the cognitive deviation of students have greatly influenced its teaching quality.The application of team-based learning(TBL)in ophthalmology education responds to the demand of modern medical education.Building a team,designing questions that combine theory and clinical practice,as well as employing a fair scoring system can stimulate students’learning interest and improve their learning autonomy and ability to ask questions and solve problems. 展开更多
关键词 OPHTHALMOLOGY general practice medical education Team-based learning Mode of teaching
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The Feasibility Study on Developing General Education in Public English Courses of Higher Vocational Colleges
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作者 雷静 《海外英语》 2020年第3期279-280,共2页
The implementation of general education is the only way to train higher vocational complex talents.Through analysis ofthe feasibility of developing general education in public English courses of higher vocational coll... The implementation of general education is the only way to train higher vocational complex talents.Through analysis ofthe feasibility of developing general education in public English courses of higher vocational colleges,it is hoped that the reform ofpublic English will be promoted effectively. 展开更多
关键词 PUBLIC ENGLISH general education FEASIBILITY
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Application of BOPPPS + Mind Maps to Improve Clinical Competence of General Practitioner Residents: Taking Cough as an Example
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作者 Yue Wang 《Journal of Clinical and Nursing Research》 2024年第6期295-299,共5页
Objective:To analyze the importance of general practitioner residents using the combined teaching method(BOPPPS+mind maps).Methods:From September 2023 to August 2024,a study was conducted with 6 control group particip... Objective:To analyze the importance of general practitioner residents using the combined teaching method(BOPPPS+mind maps).Methods:From September 2023 to August 2024,a study was conducted with 6 control group participants receiving traditional teaching and 6 observation group participants receiving the combined teaching method(BOPPPS+mind maps).The study analyzed various indicators between the two groups(including mind map scores and assessment results).Results:Compared with the control group,the assessment scores of the observation group were significantly higher(P<0.05).Conclusion:The application of the combined teaching method(BOPPPS+mind maps)by general practitioner residents can significantly improve their comprehensive abilities. 展开更多
关键词 general practitioner residents Combined teaching BOPPPS Mind maps
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Pedagogical Approaches to Teaching a General Course on Popular Music Culture:Insights and Strategies
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作者 Wei Geng 《Journal of Contemporary Educational Research》 2024年第12期201-206,共6页
This article explores the benefits of incorporating popular music into university liberal arts education,emphasizing the role of popular music in student development and its ability to stimulate student interest.Throu... This article explores the benefits of incorporating popular music into university liberal arts education,emphasizing the role of popular music in student development and its ability to stimulate student interest.Through rich illustrations,it outlines strategies for effective teaching,such as connecting music to historical and cultural contexts,promoting interaction,and fostering critical thinking.The article also emphasizes the need for inclusive teaching methods to cater to diverse student backgrounds.By incorporating popular music,education can enhance cultural literacy,critical thinking,and creativity,and cultivate students’global awareness and social responsibility. 展开更多
关键词 general education Popular music Teaching strategies Critical thinking
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Effect of epidural block combined intravenous general anesthesia stress on the stress response and T lymphocyte subsets in patients with breast cancer undergoing radical mastectomy 被引量:3
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作者 Yuan Yao Yong-Sheng Wu +1 位作者 Hong-Xia Zhu Xin-Jing Su 《Journal of Hainan Medical University》 2017年第18期120-123,共4页
Objective: To investigate the effect of epidural block combined with intravenous anesthesia on stress response and T lymphocyte subsets in patients with breast cancer undergoing radical mastectomy. Methods: In our hos... Objective: To investigate the effect of epidural block combined with intravenous anesthesia on stress response and T lymphocyte subsets in patients with breast cancer undergoing radical mastectomy. Methods: In our hospital from July 2016 to June 2017 undergoing radical mastectomy for breast cancer of 88 patients were randomly divided into observation group and control group of 44 cases, 2 patients underwent routine preoperative preparation, and routine blood pressure, heart rate, pulse, oxygen saturation, ECG monitoring, control group with intravenous anesthesia. The observation group was treated with epidural block combined with intravenous anesthesia. 2 groups of patients before anesthesia, 30 MIM (T0), 1 h after skin incision (T1), 4 h after operation (T2), 24 h after operation (T3), 48 h after operation (T4) from peripheral venous blood were measured by interleukin-8 (IL-8) and interferon gamma (IFN-γ), cortisol (Cor), prolactin (PRL), growth hormone (GH) and T lymphocyte subsets (CD3+, CD4+, CD8+), the calculation of CD4+/CD8+ value. Results: the serum IL-8 level of T1, T2, T3and T4 decreased gradually, were lower than at T0, and the control group at each time point had no significant difference, T1, T2, T3group, T4IL-8 levels lower than the control group;the 2 groups of serum IFN-γ levels T1 and T2had no significant change, T3and T4increased gradually, was higher than that of T0, but no significant difference between the 2 groups of IFN-γ levels. 2 serum Cor levels peaked at T1, decreased at T2, was higher than that of T0, T3, T4returned to T0, the observation group T1, T2Cor level lower than the control group;the serum PRL levels of 2 groups reached a peak at T1, T2, T3at the time of T4decreased gradually, was higher than that of T0, T1, T2, T3of the observation group at the PRL level is lower than the control group;the serum level of GH 2 in group T1increased gradually, reached a peak at T2, T3and T4 decreased gradually, was higher than that of T0, the observation group T1, T2, T3, T4, GH levels lower than the control group. 2 groups of CD3+ decreased gradually in T1, T2, were lower than T0, T3, T4returned to T0, the observation group T1, T2CD3+ was higher than the control group;group CD4+ decreased gradually in T1, T2, T3and T4were lower than control, T0when, and the observation group CD4+ in T1, T2, T3, T4, no significant changes were observed in group T1, T2, T3, T4and CD4+ higher than that of the control group;the 2 group CD8+ had no obvious changes in T1, T2, T3, T4;observation group CD4+/CD8+ decreased gradually in T1, T2, were lower than T0, T3, T4returned to T0, the observation group T1, T2CD4+/CD8+ was higher than the control group. Conclusion: epidural block combined with intravenous anesthesia for breast cancer radical mastectomy can effectively relieve the stress and inflammatory reaction, alleviate the immunosuppression, and help to restore the postoperative immune function. 展开更多
关键词 Total INTRAVENOUS ANESTHESIA EPIDURAL block COMBINED INTRAVENOUS general ANESTHESIA Radical MASTECTOMY STRESS response T lymphocyte subsets
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Effects of Total Intravenous Anesthesia and Static Aspiration Combined General Anesthesia on Postoperative Cognitive Function and Psychological State of Elderly Patients with Esophageal Cancer 被引量:1
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作者 Lan Xie Chuanzhen Li 《Open Journal of Anesthesiology》 2022年第5期161-167,共7页
Objective: To compare the effects of total intravenous anesthesia and static aspiration combined general anesthesia on postoperative cognitive function and psychological state of elderly esophageal cancer patients. Me... Objective: To compare the effects of total intravenous anesthesia and static aspiration combined general anesthesia on postoperative cognitive function and psychological state of elderly esophageal cancer patients. Methods: From July 2020 to April 2021, 180 elderly patients who underwent radical esophageal cancer surgery in our hospital were randomly divided into 90 cases in the control group and 90 in the observation group. The control group used static aspiration compound general anesthesia, and the patients in the observation group used intravenous anesthesia to compare the cognitive function and psychological state of the two groups of patients. Results: There was no statistical difference in the cognitive function score of patients in the observation group 30 minutes before anesthesia, 1 h and 24 hours after anesthesia compared with that in the control group, P > 0.05;there was no statistical difference between the Hamilton Anxiety Scale (HAMA) scores 30 minutes before and 24 hours after anesthesia in the observation group compared with the control group, P > 0.05;the cognitive function score of patients in the observation group of 4 h after surgery and 12 h after operation was significantly higher than that of the control group;the HAMA scores of patients in the observation group of 1 h, 4 h and 12 h after surgery were significantly lower than that of the control group, P Conclusion: The application of total intravenous anesthesia in elderly patients with esophageal cancer surgery can reduce the impact of anesthesia on their cognitive function and psychological state, which is worth popularizing and applying in clinical practice. 展开更多
关键词 Total Intravenous Anesthesia Static Aspiration Combined general Anesthesia Esophageal Cancer ELDERLY SURGERY Postoperative Cognitive Function Psychological State
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Are efforts up to the mark? A cirrhotic state and knowledge about HCV prevalence in general population of Pakistan
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作者 Muhammad Sohail Afzal 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2016年第6期597-598,共2页
Pakistan is declared a cirrhotic state by WHO because of high prevalence of Hepatitis C virus(HCV). It is proposed that there are more than 10 million infected individuals in Pakistan. Keeping in mind the scenario, on... Pakistan is declared a cirrhotic state by WHO because of high prevalence of Hepatitis C virus(HCV). It is proposed that there are more than 10 million infected individuals in Pakistan. Keeping in mind the scenario, one should expect to have proper surveillance system for HCV monitoring across the country not only for high risk groups but also for general population as well. Monitoring the general population is of considerable help to identify the hot spots for infection spread and will help in designing effective strategies. In this study the current available data from last 6 years is analyzed. The results showed that the range of HCV seroprevalence in general population in Pakistan varied from 3.13%-23.83%. Similarly year wise HCV prevalence showed great variation and the prevalence was 9.57%, 6.04%, 7.46%, 4.9% and 11.04% in 2010, 2011, 2012, 2013 and 2014 respectively. The current analysis declared that available data is not sufficient and is not presenting the original picture of the situation. On these basis, a proper surveillance system is proposed across the country to get an actual picture of the infection for better management in future and massive community education programmes should be warranted in identified hot spots across the country. 展开更多
关键词 HCV general POPULATION PREVALENCE COMMUNITY education Pakistan
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General Analytical Shakedown Analysis of a Structure Subjected to Combined Loading with Constant and Cyclic Loads
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作者 Zongyuan Zou Baofeng Guo Miao Jin 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2017年第3期67-75,共9页
The shakedown behavior of structures subjected to a combined loading of constant and cyclic loads has been well researched.For some specified problems,shakedown limit loads have been obtained.However,the general effec... The shakedown behavior of structures subjected to a combined loading of constant and cyclic loads has been well researched.For some specified problems,shakedown limit loads have been obtained.However,the general effect of combined loading on the structural shakedown has not yet been presented.The general analytic solution of the elastic shakedown limit load is thus derived for a structure subjected to combined loading.Polizzotto's extended static shakedown theorem for combined loading is applied.The stress field in equilibrium with the external constant load required in Polizzotto's extended theorem is constructed by subtracting the reference elastic stress field of the peak cyclic load from the elastic-plastic stress field of the combined constant load and peak cyclic load.The shakedown condition of the stress field is then derived according to the extended theorem.Through the analytical analysis of the shakedown condition,the structural shakedown behavior under combined loading is investigated.A general solution of the shakedown limit load is then derived,and the effects of the combined loading on the shakedown behavior are proposed.The obtained general analytical result is applied to a hollow tension specimen under constant tension and alternating torsion and a plate with a central hole under constant and cyclic tension.The results are consistent with the solutions reported in the literature. 展开更多
关键词 ELASTIC-PLASTIC SHAKEDOWN LIMIT load general ANALYTICAL solution combined loading
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Analysis of Combining Ability for Resistance of Sugarcane Parents and Cross Combinations to Brown Stripe Disease
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作者 Zhu Jianrong 《Plant Diseases and Pests》 CAS 2017年第2期39-42,46,共5页
[Objectives] The paper was to screen resistant sugarcane varieties against brown stripe disease,and to breed disease-resistant germplasm resource.[Methods]The combining ability for resistance to sugarcane brown stripe... [Objectives] The paper was to screen resistant sugarcane varieties against brown stripe disease,and to breed disease-resistant germplasm resource.[Methods]The combining ability for resistance to sugarcane brown stripe disease was analyzed based on 23 female parents,21 male parents and 29 cross combinations. [Results]The average heritability of resistance to sugarcane brown stripe disease successively were female parents( 95. 3%),cross combinations( 93. 0%)and male parents( 79. 1%). The general combining ability of 12 female parents showed negative effect,including Pma 98-40,Yacheng 93-26,Yunrui 05-283,Yuetang 91-976,Chuanzhe 19,ROC10,Yunzhe 06-80,ROC26,Zhanzhe 74-141,K86-110,Yunzhe 03-194 and ROC25. The general combining ability of 10 male parents showed negative effect,including Q 199,Yunrui 06-649,Yunrui 05-733,CP 84-1198,CP 88-1762,Yacheng 84-125,Yunrui 05-784,Yuetang 00-236,CP72-3591 and CP 94-110. The special combining ability of 16 cross combinations showed negative effect,including Pma 98-40 × Yunrui 05-649,Yacheng 93-26 ×Yunrui 05-733,Yunrui 05-283 × Q199,Yuetang 91-976 × CP 84-1198,Chuanzhe 19 × CP 88-1762 and ROC10 × Yuenong 73-204. [Conclusions] There were significant differences in combining ability among female parents,male parents and cross combinations,which were mainly controlled by additive and non-additive gene. 展开更多
关键词 SUGARCANE Sugarcane brown stripe disease general combining ability Special combining ability
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