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  • Values and Preferences of Pharmacotherapy in Patients with Primary and Secondary Prevention of Atherosclerotic Cardiovascular Disease:a Mixed-methods Study

    Subjects: Medicine, Pharmacy >> Preventive Medicine and Hygienics submitted time 2024-05-21 Cooperative journals: 《中国全科医学》

    Abstract: Background  Pharmacotherapy is the cornerstone of primary and secondary prevention of atherosclerotic cardiovascular diseases(ASCVD),but the values and preferences of community patients for pharmacotherapy remain unclear. Objective  To understand the values and preferences surrounding pharmacotherapy among community patients at risk of or undergoing treatment for ASCVD,which would help clarify the individualized treatment burden and provide patient centered clinical practice. Methods  This study employed a sequential exploratory mixed-methods design. Firstly,we recruited eligible patients in West China Hospital of Sichuan University and Yulin Community Health Service Center in Wuhou District,Chengdu City from November 2021 to January 2022. for a focus group discussion,aiming to collect qualitative insights into their experience,values,and preferences for medication use. The software MAXQDA 2020 was used to support qualitative data analysis,and Colaizzi's seven-step approach was further used to identify themes. After completing the qualitative phase,a questionnaire was designed based on the emergent themes to further quantitatively analyze the values and preferences regarding pharmacotherapy. Results  Four themes emerged from the qualitative data,including knowledge and use of medications,barriers of medication use,facilitators of medication use,and need for medical services. A total of 186 valid questionnaires were collected in the quantitative study(response rate of 93.5%). The quantitative data showed a commonality in missed dose and confirmed the existence of social stigma and treatment burden in this group of participants. Although preferences in medication use were highly heterogeneous,participants generally preferred taking fewer medications with less frequency,and were less likely to use injectable medications. Conclusion  The study suggests that it may be appropriate to increase the use of compound preparations,and make treatment plans in accordance with patients' daily lives and work to reduce the treatment burden of pharmacotherapy. In addition,we should be active in managing the misconceptions and improper practices in pharmacotherapy in order to improve patients' medication adherence.

  • 书院制育人模式下的全生异科陪伴路径浅析

    Subjects: Other Disciplines >> Synthetic discipline submitted time 2024-03-05 Cooperative journals: 《第八届海峡两岸暨港澳地区高校现代书院制教育论坛 》

    Abstract:书院制是近十余年来国内高校人才培养模式改革的一个重要方向,随着书院制教育成为大学教育改革的新模式,本科生导师制度近年来受到国内越来越多高校追捧,紧密联系、互动的新型师生关系也逐渐受到青睐,在大学教育中也逐渐发挥越来越重要的作用。晋中信息学院作为山西省内首家全员书院制模式普通高等院校,积极探索、创新推进全生异科导师制改革实践,推动学生个人素质全面发展。

  • Analysis of Clinical Characteristics and Influencing Factors of Gastrointestinal Dysfunction Associated with Peritoneal Dialysis in Uremia

    Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2024-01-03 Cooperative journals: 《中国全科医学》

    Abstract: Background  Gastrointestinal dysfunction is a very common complication in peritoneal dialysis patients,which not only seriously affects the appetite and mood of patients,but also induces malnutrition,dehydration,electrolyte disorders,or systemic inflammatory reactions,and even leads to a decrease in the effectiveness of peritoneal dialysis,thus increasing the difficulty of medical treatment and lowering the patients' standard of living. Objective  To analyse the clinical characteristics and influencing factors of patients with peritoneal dialysis-associated gastrointestinal dysfunction,and provide reference for the clinical diagnosis and treatment of peritoneal dialysis-associated gastrointestinal dysfunction. Methods  A retrospective study was conducted to select 304 uremic patients who underwent continuous ambulatory peritoneal dialysis in the Nephrology Department of the First Teaching Hospital of Tianjin University of Traditional Chinese Medicine from 2019-09-01 to 2021-09-01. The patients were divided into the gastrointestinal dysfunction group and non-gastrointestinal dysfunction according to the combination of gastrointestinal dysfunction. General data,comorbidities,laboratory test indexes,and dialysis adequacy related indexes of the two groups of patients were collected and compared. SPSS 23.0 software was used to statistically analyze the clinical data, the clinical characteristics of peritoneal dialysis-associated gastrointestinal dysfunction,and binary Logistic regression analysis was used to explore the factors influencing the occurrence of peritoneal dialysis-associated gastrointestinal dysfunction in patients with uremia. Results  A total of 304 peritoneal dialysis patients were included,of which 189(62.2%) were in the gastrointestinal dysfunction group, with the median age of 62(52,67)years. The differences in age,proportions of primary diabetic nephropathy and combined hypertension and coronary artery disease between the two groups were statistically significant(P<0.05);the levels of blood calcium,cholesterol,creatine kinase,C-reactive protein,total bilirubin,blood glucose,glycosylated hemoglobin,procalcitonin,and triglyceride were compared between the two groups,and the differences were statistically significant(P<0.05);standardized comparison of the levels of blood urea nitrogen,residual renal urea clearance index(Kt/V),peritoneal Kt/V,total creatinine clearance(Ccr),residual kidney Ccr,and total Ccr between the two groups showed statistically significant(P<0.05). The results of multivariate Logistic regression analysis showed that primary diabetic nephropathy(OR=7.471,95%CI=1.161-48.061,P=0.034),elevated glycosylated hemoglobin(OR=1.367,95%CI=1.080-1.731,P=0.009)were the independent risk factors for the occurrence of peritoneal dialysis associated gastrointestinal function in uremic patients,and elevated residual kidney Ccr(OR=0.952,95%CI=0.908-0.997,P=0.038)was an independent protective factor for the occurrence of peritoneal dialysis-associated gastrointestinal disorders in uremic patients. Conclusion  The incidence of peritoneal dialysis-related gastrointestinal dysfunction was relatively high,with a clinical prevalence in the elderly. Diabetic nephropathy and elevated glycosylated hemoglobin may be independent risk factors for peritoneal dialysis-associated gastrointestinal dysfunction in patients with uremia. Elevated residual kidney Ccr may be an independent protective factor for peritoneal dialysis-associated gastrointestinal dysfunction in uremic patients.

  • Development and Application of Document Delivery Robot Based on the Selenium Framework

    Subjects: Library Science,Information Science >> Library Science submitted time 2023-12-28

    Abstract:   Purpose/significance The author is responsible for document delivery work on the Jiangsu Engineering Technology Literature Information Center platform where mechanical repetitive operations account for a large proportion, seriously encroaching on work time. Moreover, the literature requirement is 24 hours, and as a duty librarian, it can only be transmitted within a limited time, making it difficult to ensure the timeliness of transmission. So, the author attempts to develop a document delivery robot to automate the completion of document delivery work. Method/process The paper takes the Jiangsu Engineering Technology Literature Information Center platform as an example, based on the Selenium framework, designs and develops a document delivery robot, which realizes the entire process of logging in, checking in, obtaining orders, searching, downloading, uploading, completing literature transfer, and then continuing to wait for dispatching. Result/conclusion After a month of operation analysis, it was found that although the document delivery robot cannot completely replace manual delivery, it can effectively solve the high proportion of mechanical repetitive work in the literature delivery process, improve the delivery efficiency, and expand the service time, allowing the delivery librarians to have more energy to solve difficult to find literature such as special literature. Finally, document delivery robots also have reference significance for the field of document delivery and other related scenarios.
     

  • 中国城市形象在互联网上的传播策略——以合肥为例

    Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》

    Abstract:【目的】文章以合肥为例,分析国际社会对中国城市的总体认知,旨在提出进一步提升中国城市国际形象的针对性建议。【方法】基于“韦氏词典”“大英百科全书”“旅行顾问”三大海外网站,研究合肥有关英文网页主要内容及其存在问题。【结果】国际社会对中国城市还缺乏足够了解,城市有关数据、信息等掌握并不准确,展示并不全面,尚不能在互联网这一重要平台充分展现中国城市完整的、真正的形象与气质。【结论】建议有关部门、机构、组织,以及关心中国城市发展及城市形象国际传播的各界人士与国外各大网站和平台建立联系,开展交流与合作,并积极参与城市国际形象的建构与传播;汇集各方力量,整合现有资源,打造中国自有、具有世界影响力的全国城市外宣门户网站或大型综合平台;潜精研思,思考如何向海外受众讲好中国故事,讲好中国城市故事。

  • 移动互联网背景下高校校园媒体融合之道

    Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》

    Abstract:移动互联网的风靡,催发媒体领域进行着一场前所未有的变革,媒体融合从学术讨论上升为实践决策。不少高校开始尝试传统媒体与新兴媒体的融合发展。本文着眼于移动互联网的深刻背景,坚持以先进理念为支撑、内容建设为根本,推动校园媒体在内容、渠道、平台等方面的深度融合。

  • Prevalence of Dyslipidemia in Pregnancy and Early Predictive Value of Blood Lipid Levels

    Subjects: Medicine, Pharmacy >> Preventive Medicine and Hygienics submitted time 2023-08-16 Cooperative journals: 《中国全科医学》

    Abstract: Background  Elevated dyslipidemia during pregnancy can adversely affect maternal and child health. It not only increases the risk of preeclampsia,gestational diabetes mellitus(GDM),hypertriglyceridemic pancreatitis,late abortion,premature delivery and macrosomia,but also significantly increases the risk of postnatal cardiovascular disease. Objective  To analyze the distributional characteristics of dyslipidemia in the first,second and third trimesters of pregnancy and the predictive value of early lipid levels for dyslipidemia in the second and third trimesters of pregnancy. Methods  This was a single-center retrospective study,which included singleton pregnant women who were enrolled in Beijing Obstetrics and Gynecology Hospital,Capital Medical University from January 2018 to June 2019 for obstetrics checkups until delivery. Clinical data and lipid data〔total cholesterol(TC),triacylglycerol(TG),low-density lipoprotein cholesterol(LDL-C),and high-density lipoprotein cholesterol(HDL-C)〕were collected in the first,second and third trimesters of pregnancy. The reference range of lipids in department of obstetrics,Beijing Obstetrics and Gynecology Hospital,Capital Medical University was used as the diagnostic standard for dyslipidemia,including high total cholesterolemia,high triacylglycerolemia,low HDL-cholesterolemia and high LDL-cholesterolemia. The correlation between lipid levels in the first trimester of pregnancy and dyslipidemia in the second and third trimesters of pregnancy was analyzed by using binary Logistic regression,and the receiver operating characteristics(ROC)curves of the subjects were plotted to obtain the area under ROC curve(AUC),to evaluate the predictive value of the lipid levels in the first trimester of pregnancy for dyslipidemia in the second and third trimesters of pregnancy,and to determine the optimal cut-off value according to the sensitivity and specificity. Results  A total of 8 511 singleton pregnant women were included in the study,with an average age of(31.7±3.9)years and an average pre pregnancy BMI of(21.7±3.2)kg/m2 . Among them,988(11.6%)were of low pre-pregnancy body mass,5 568(65.4%)were of normal pre-pregnancy body mass,1 271(14.9%)were overweight,366(4.3%)were obese,1 415(16.7%) were with GDM,and 650(7.6%)were with hypertensive disorders of pregnancy(HDP). The levels of TC,TG and LDL-C in the second and third trimesters of pregnancy were higher than those in the first trimester of pregnancy(P<0.05). The level of HDL-C in the third trimester of pregnancy was higher than that in the first trimester of pregnancy,but lower than that in the second trimester of pregnancy(P<0.05). The prevalence of dyslipidemia in the first trimester of pregnancy was 23.4%(1990/8511),and the prevalence of dyslipidemia in the second and third trimesters of pregnancy was lower than that in the first trimester of pregnancy(P<0.05). The prevalence of dyslipidemia in overweight and obese pregnant women in the first trimester of pregnancy was higher than that in pregnant women with normal pre-pregnancy body mass,but there was no statistical difference in the prevalence of dyslipidemia in the third trimester of pregnancy(P>0.05). The prevalence of dyslipidemia in first and second trimesters of pregnancy in the GDM group was higher than that in the non-GDM group,and the prevalence of dyslipidemia in first,second and third trimesters of pregnancy in HDP group was higher than the non-HDP group(P<0.05). After excluding pregnancy comorbidities and complications that may affect blood lipids,the optimal cut-off values for predicting dyslipidemia in the second trimester of pregnancy were TC of 4.485 mmol/L(AUC=0.854),TG of 1.325 mmo/L(AUC=0.864),HDL-C of 1.275 mmol/L(AUC=0.908),and LDL-C of 2.265 mmol/L(AUC=0.823),respectively;the optimal cut-off values for predicting dyslipidemia in the third trimester of pregnancy were TC of 4.485 mmol/L(AUC=0.809),TG of 1.145 mmol/L(AUC=0.833),HDL-C of 1.285 mmol/L(AUC=0.851),LDL-C of 2.195 mmol/L(AUC=0.766). Conclusion  The prevalence of dyslipidemia did not increase during pregnancy. There were significant differences in the prevalence of dyslipidemia during pregnancy among pregnant women with different pre-pregnancy BMI,between GDM and non-GDM pregnant women,between HDP and non-HDP pregnant women,respectively. The blood lipid level in the first trimester was helpful to predict the occurrence of dyslipidemia in the second and third trimesters of pregnancy.

  • Research on Metadata Fusion of Multi-Source Documents Based on the Decision Tree

    Subjects: Library Science,Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》

    Abstract: [Purpose/significance] Constructing a multi-source document metadata fusion model will help improve the overall quality of document metadata, promote metadata management and utilization in the resource discovery system, and optimize user resource discovery service experience. In view of the document metadata duplication judgment strategy proposed by the writers before, this paper optimizes the strategy from experience-oriented to automated, and improves the automation level in the whole process on the premise of guaranteeing the duplication judgment and fusion effect.[Method/process] The metadata items of different types of documents were different, and the metadata items of the same document from different sources were different, which will make the method of judging duplication different. An automatic multi-source document metadata fusion model based on the decision tree was proposed, which transformed a duplication judgment problem into a classification problem. This paper selected features according to feature similarity and constructed the decision tree, on this basis, it implemented metadata duplication judgment and fusion, and took different types of document resource metadata as examples to conduct experiments to verify the effectiveness of the strategy.[Result/conclusion] The results show that for the five document types of metadata, the accuracy of the duplication judgment strategy is more than 99%, and the recall rate is more than 98%. The overall effect is good. Judgment on the effect of the fusion strategy, the quality improvement ratios of the metadata items of patents, dissertations, journal papers, conference papers and books are 15.15%, 36.80%, 15.29%, 52.63% and 15.38% respectively, all of which have significant improvement.

  • “Coastal Grass Belt” as Paradigm for Grass-based Livestock Husbandry around Bohai Bay

    Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》

    Abstract: One of the burning questions of food security in current China is how to produce sufficient forage products and animal feeds. The limited arable land has to be devoted to cereal production, and exploring more terrestrial land is a prerequisite for the sustainable forage production and the development of grass-based livestock husbandry. Bohai rim is consist of coastal line of the North China Plain, which has a significant amount of medium-low yielding fields and unutilized saline-alkali land as well as intensive livestock production. In this study, a new concept of “Coastal Grass Belt”, proposed by LI Zhensheng, an academician of Chinese Academy of Sciences (CAS), was introduced, which addresses how to develop grass/forage farming system according to the severity of salinity. This concept can not only improve soil quality but also provide sufficient forage for livestock. Meanwhile, the concept is also aligned with China’s national strategies of storing grain in land and in agricultural technology to ensure the self-sufficiency of important agricultural products and the integration of the security of land and marine ecosystems. This paper provides a detailed description of the “Coastal Grass Belt” concept, elaborates its goals, key scientific issues and innovative modes, and analyzes the ecological environmental and economic-industrial benefits. Finally, the much-needed innovation platforms, agro-industry modes and policies for the development of “Coastal Grass Belt” are discussed.

  • 《游戏化视角下的互动视频分析——以B站为例》

    Subjects: Digital Publishing >> Digital Newspaper submitted time 2023-03-24

    Abstract: With the rapid development of new media technology, deep integration has become the mainstream of The Times, "audience" has become "user", and more attention is paid to individual choice and process experience. Interactive video mobilizes the user's skills to deal with unknown challenges, and users gain a sense of agency and participation through pauses, choices, substitution and immersion. Based on the gamification theory, taking Bilibili's popular interactive videos as an example, through online participatory observation, the text data of bullet screen is mined to explore the emotional experience generated by users in the process of watching, as well as the cultural significance highlighted behind it and audience behavior, so as to clarify the communication characteristics of interactive videos of Bilibili.

  • Practice of Total Quality Management Mode in the Management of "One Certificate, One Product" Specialized Nursing Demonstration Ward

    Subjects: Nursing >> Nursing submitted time 2023-03-06

    Abstract: Through the construction of "one certificate and one product" specialized nursing demonstration ward carried out by our hospital, establishes a Chinese medicine nursing service brand that highlights the characteristics of the elderly. Construct and implement the practice of Total Quality Management (TQM) model in specialized demonstration wards. further improves the level of specialized nursing services, and improves the comprehensive nursing quality of nursing staff. To enable patients to obtain standardized, professional and homogeneous nursing services and improve patient satisfaction.

  • Individualized management targets of inpatient hyperglycemia

    Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2022-11-16 Cooperative journals: 《中国全科医学》

    Abstract:

    Inpatient hyperglycemia is common in clinical practice, and is associated with various adverse outcomes in hospital,increased mortality in critically ill patients, and prolonged爃ospital stay in non-critically ill patients.牋Currently, guidelines in China and abroad all recommend aggressive and comprehensive management of inpatient hyperglycemia. Glycemic targets should be individualized based on patient characteristics. This paper reviewed the management and target of inpatient hyperglycemia in China and other countries, and discussed the research progress of inpatient hyperglycemia management.

  • The investigation and analysis of the quality status of nursing documents for critical patients in hospitals of traditional Chinese medicine(TCM)in Beijing

    Subjects: Nursing >> Nursing submitted time 2022-10-21

    Abstract: Objective: This study aims to provide a reference for the quality management of nursing documents in TCM hospitals, by investigating and analyzing the quality status of nursing documents for critical patients in TCM hospitals in Beijing.Methods: This study adopted cluster sampling method to select 38 third-level and second-level TCM hospitals and integrated traditional Chinese and Western medicine hospitals in Beijing as the survey subjects, and selected archived medical records from January 1st to October 31st, 2020. Each hospital will extract 5 nursing records of critical patients, and exclude medical records with less than 3 days recording. Finally, the quality of the selected 175 nursing records were investigated, and the quality defects discovered were analyzed.Results: The average score of writing quality of 175 nursing records was 82.12 points. And the quality defects occurred 917 times, including 76 times(8.29%) quality defects in ADL Assessment Scale and 106 times (11.56%) quality defects in Temperature Chart, and quality defects occurred most up to 720 times(78.52%) in Nursing Record Sheet. Nursing record defects mainly appears in 6 areas: incorrect recording of time limit, lack of specialized nursing connotation, nonstandard TCM technology records, untidy handwriting, nonstandard signatures, and other problems.Conclusion: The overall quality of nursing documents for critical patients in Beijing TCM hospitals has been improved. Critical patients’ nursing document quality defects still occur frequently, and the types of quality defects are complex. Improvements should be made from instituting standards in detail, implementing tabular electronic medical records, and strengthening the training of nurses’ comprehensive capabilities. The management department should attach great importance to the quality of nursing document writing and analyze reasons for the defects and take effective measures.

  • Traditional Chinese Medicine emotional nursing in the surgical care

    Subjects: Nursing >> Nursing submitted time 2022-09-06

    Abstract:

    Traditional Chinese Medicine (TCM) emotional nursing is a kind of psychological therapy, which is based on the theory of medical psychology, through the language, expression, posture, attitude, behavior and temperament of the nursing staff to affect and improve the patient emotional state. According to the patient’s condition, appropriate psychological care is carried out to relieve the negative emotions, so as to achieve the purpose of disease prevention and treatment.

  • Nursing of a patient with septic shock

    Subjects: Nursing >> Nursing submitted time 2022-09-06

    Abstract:

    Sepsis shock is a life-threatening disease to ICU patients, which is one of the important factors causing the death of ICU patients. This paper summarized the nursing measures for a patient with septic shock, including nursing personnel arrangement, illness condition observation, medication care, skin care, mechanical ventilation nursing, and nutrition support. In addition to giving patients scientific and effective treatment, it is of positive significance to carry out detailed and comprehensive nursing measures for patients with septic shock.

  • The impact of materialism on green consumption: Promotion or inhibition?

    Subjects: Psychology >> Management Psychology Subjects: Psychology >> Personality Psychology submitted time 2022-01-02

    Abstract: In today’s Chinese society, where materialistic values prevail, the promotion of green consumption is a matter of concern. Previous studies have drawn contradictory conclusions regarding the relationship between materialism and green consumption. Apropos this, the current research takes the conspicuous and inconspicuous characteristics of green products themselves as the breakthrough point. This study first examines the boundary conditions of materialism affecting green consumption, namely the moderating role of green products’ conspicuous characteristics. It further explores the psychological mechanisms of materialism promoting conspicuous green consumption and inhibiting inconspicuous green consumption, and finally investigates the intervening effects of nature contact on this basis. These studies provide new ideas for solving existing research differences and make management suggestions for enterprises and the government to guide green consumption."

  • Moral foreign language effect and its moderating variables: a systematic review and meta-analysis

    Subjects: Psychology >> Cognitive Psychology submitted time 2021-07-27

    Abstract: When presented with the moral decision-making situation within a foreign language context, the individuals will show a stronger utilitarian moral evaluation tendency compared with the same situation within the native language context. This phenomenon is defined as the moral foreign language effect. Numerous research studies have explored how the language context can influence moral judgment. However, the results were far from consistent. In this work, we used meta-analysis to explore the effect of the language type (native language vs. foreign language) on the individuals’ utilitarian tendency in moral judgments, and we analyzed several moderating variables. We retrieved 19 papers from the literature, with 46 independent samples, 97 effect sizes and 9672 participants that met the inclusion criteria. The results demonstrated a small but stable moral foreign language effect (g = 0.23). Analyzing the moderation factors indicated that the moral foreign language effect was influenced by the story type, with a small but stable effect for personal moral dilemma stories (g = 0.32). On the other hand, there was no foreign language effect for impersonal moral dilemma stories (g = 0.11) or daily moral evaluation stories (g = 0.12). In addition, the foreign language effect for impersonal moral dilemma stories was affected by the scoring method. There was a significant effect under multi-point scoring (g = 0.27), but not under two-point scoring (g = 0.05). As for the sex and language family type, no significant moderating effect was observed. Our results suggest that the language type has a certain impact on the individuals' decision tendency when faced with moral dilemmas. More attention should be paid to the influence of the moral dilemma story type and a scoring method in future research.

  • Bibliometric Analysis of Chinese Journal of Applied Psychology from 1986 to 2020

    Subjects: Psychology >> Other Disciplines of Psychology submitted time 2021-03-15

    Abstract: This present study aims to explore characteristics in the 1986~2020 literature of Chinese Journal of Applied Psychology by bibliometric analysis. The results showed that the proportion of empirical research in Chinese Journal of Applied Psychology has declined in recent years, while the proportion of non-empirical research has increased. The proportion of fund funding has been increasing year by year. The number of authors co-published articles was 1101, and 6 clusters were formed among highly productive authors. The main issuing institutions were normal universities, and Zhejiang colleges and universities published more articles. The proportion of inter-agency cooperation was rising. There was a significant positive correlation between cited frequency and download frequency. The research hotspots of Chinese Journal of Applied Psychology have experienced three stages: overview of applied psychology, psychology and behavior of different groups, and artificial intelligence. This study believes that this journal has the following characteristics: (1) It has good "Quality" and big "quantity"; (2) The trend of cooperation in scientific research is obvious; (3) The journal articles exit regional; (4) Social demand promotes the development of Chinese Journal of Applied Psychology. In the future, the journal should continue to improve while maintaining its advantages to better serve the development of the discipline and meet social needs. " "

  • 巨菌草根部促生菌的筛选及其促生效应

    Subjects: Biology >> Botany >> Applied botany submitted time 2019-06-17 Cooperative journals: 《广西植物》

    Abstract:本研究采用巨菌草根部为主要研究材料,进行巨菌草促生菌的筛选,并测定促生菌株的促生效应。以解磷、固氮和产IAA等为筛选标准,对初筛菌株进行多项促生能力的测定,通过形态观察、生理生化特性和 16S r DNA序列同源性分析对促生效果最好的菌株YB-07进行分类和鉴定。分别测定其促生能力后,从中筛选出促生效应强的11个菌株进行盆栽试验,通过对这些菌株单独回接和多菌混接的小麦盆栽试验测定了其对小麦的促生效应。从巨菌草根部分离得到了101株促生菌株,分类鉴定结果显示菌株YB-07归属于根瘤菌属(Rhizobium),其溶磷量为20.1 mg•L-1、产IAA量为23.7 mg•L-1且同时具有产氨能力。盆栽试验的测定结果表明:多菌混合接种对小麦的促生效应在株高、干重、鲜重和叶绿素含量上较对照组分别增加了24.49%、31.84%、28.06%和34.14%。单菌接种对小麦对促生在株高、干重、鲜重、和叶绿素含量上较对照组分别增加了13.54%、20.45%、16.84%和35.19%。所筛选到的菌株具有良好的促生长作用,能为进一步构建巨菌草促生菌菌群提供良好的种质资源。

  • 500kV高压直流输电线离子流场对绝缘子 电位分布特性影响

    Subjects: Dynamic and Electric Engineering >> Electrical Engineering submitted time 2019-03-05 Cooperative journals: 《电气工程学报》

    Abstract:由于特高压直流输电线周围存在空间电荷,直流输电线附近电场分布复杂, 对附近的绝缘子闪络存在影响。本文基于上流有限元方法计算模拟了 500kV 单极高压 直流线路附近的离子流场,采用迭代收敛控制算法,以保证迭代收敛;研究了空间电 荷的存在对 500kV 直流绝缘子沿面参数的影响