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The in-depth transmission and reception process of the factors influencing review helpfulness from the signaling timeline perspective
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作者 Mohan Wang Fei Wan +1 位作者 Jiaying Zhang Songyun Xia 《中国科学技术大学学报》 CSCD 北大核心 2024年第10期35-50,I0006,I0007,共18页
Many existing studies have considered the factors influencing review helpfulness,mainly focusing on reviewer impact,review informativeness,and managerial response,based on signaling theory.However,previous studies hav... Many existing studies have considered the factors influencing review helpfulness,mainly focusing on reviewer impact,review informativeness,and managerial response,based on signaling theory.However,previous studies have simply regarded these factors as independent signals,thus ignoring their in-depth transmission and reception processes.The conclusions about the impact of reviewers on review helpfulness are also inconsistent due to the inaccurate measure-ment of variables.To fill the above gaps,we followed the signaling timeline theoretical framework used in signaling the-ory and employed a bootstrapping analysis to examine how reviewer impact,review informativeness,and hotel manageri-al responses interact to influence review helpfulness.In this study,we used a unique dataset that included official labels from one leading online travel agency.The results show that reviewer impact may affect review helpfulness sequentially through review informativeness and hotel managerial response.Furthermore,by using official labels,both reviewer expert-ise and reviewer experience significantly affect review helpfulness.Finally,we discussed the theoretical and practical im-plications of these findings. 展开更多
关键词 signaling timeline review helpfulness reviewer impact review informativeness managerial response
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Analysis of Review Helpfulness Based on Consumer Perspective 被引量:6
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作者 Yuanlin Chen Yueting Chai +1 位作者 Yi Liu Yang Xu 《Tsinghua Science and Technology》 SCIE EI CAS CSCD 2015年第3期293-305,共13页
When consumers make purchase decisions, they generally refer to the reviews generated by other consumers who have already purchased similar products in order to get more information. Online transaction platforms provi... When consumers make purchase decisions, they generally refer to the reviews generated by other consumers who have already purchased similar products in order to get more information. Online transaction platforms provide a highly convenient channel for consumers to generate and retrieve product reviews. In addition, consumers can also vote reviews perceived to be helpful in making their decision. However, due to diverse characteristics, consumers can have different preferences on products and reviews. Their voting behavior can be influenced by reviews and existing review votes. To explore the influence mechanism of the reviewer, the review, and the existing votes on review helpfulness, we propose three hypotheses based on the consumer perspective and perform statistical tests to verify these hypotheses with real review data from Amazon. Our empirical study indicates that review helpfulness has significant correlation and trend with reviewers, review valance, and review votes. In this paper, we also discuss the implications of our findings on consumer preference and review helpfulness. 展开更多
关键词 consumer preference online decision making review helpfulness behavior analysis
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基于HELP护理模式的医护一体化干预在老年下肢骨折术后患者中的应用
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作者 马程程 李晓琳 《山东医学高等专科学校学报》 2025年第5期66-68,共3页
随着年龄的增大,骨骼强度也逐渐下降,老年人更易因骨折损伤而发生髋部骨折、股骨骨折等,不仅影响患者的健康与生活质量,还增加致残风险。临床以手术治疗为主,但受年龄、不良生活习惯、骨折类型、基础疾病等因素的影响,术后患者仍可能因... 随着年龄的增大,骨骼强度也逐渐下降,老年人更易因骨折损伤而发生髋部骨折、股骨骨折等,不仅影响患者的健康与生活质量,还增加致残风险。临床以手术治疗为主,但受年龄、不良生活习惯、骨折类型、基础疾病等因素的影响,术后患者仍可能因机体免疫力下降而影响伤口愈合,增加感染风险,或因局部组织水肿、出血而压迫下肢静脉,影响血液回流而诱发静脉血栓栓塞(Venous thromboembolism,VTE)等并发症,阻碍术后肢体功能恢复,严重者甚至可能因栓塞脱落而死亡^([1-2])。 展开更多
关键词 HELP护理模式 医护一体化 下肢骨折 老年患者 静脉血栓栓塞
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My Best Friend
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作者 尹文康 张超(指导) 《中学生英语》 2025年第14期7-7,共1页
I have a best friend・His name is Li Xuan・We live in the same neighborhood and go to the same school.Li Xuan is a kind and clever boy.He always smiles and is ready to help others.One day,I had a problem with my math ho... I have a best friend・His name is Li Xuan・We live in the same neighborhood and go to the same school.Li Xuan is a kind and clever boy.He always smiles and is ready to help others.One day,I had a problem with my math homework and I was very worried. 展开更多
关键词 KIND HELP best friend NEIGHBORHOOD li xuan we math homework SCHOOL CLEVER
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The Future of the Past
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作者 SUDESHNA SARKAR 《China Today》 2025年第3期70-73,共4页
Besides supporting cultural tourism,the Hong Kong Palace Museum sees its mission as helping build a community with a shared future for all.
关键词 SUPPORTING HELPING TOURISM
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I CAN HELP!
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作者 Garrett Hart 《空中英语教室(初级版.大家说英语)》 2025年第1期14-15,51,共3页
"You worked hard.You're almost done,"says Philip as he looks around.He's at his friend Brett's house。"Almost.Packing all these boxes was a lot of work.I'm excited to move into my new ap... "You worked hard.You're almost done,"says Philip as he looks around.He's at his friend Brett's house。"Almost.Packing all these boxes was a lot of work.I'm excited to move into my new apartment,"Brett says. 展开更多
关键词 EXCITED HELP FRIEND
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大学生互联赋能Help平台设计分析
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作者 常冰琪 崔国祥 +2 位作者 周建 张鑫宇 周欣 《社会科学前沿》 2025年第5期681-689,共9页
移动互联网新媒体的快速发展,推动了以4G/5G网络技术为核心技术的移动智能手机在学生群体中的普及。随着大学学业体系的逐渐完善,大学生对综合服务与资源共享平台的需求日益增长。党的二十届三中全会《决定》对深化教育综合改革作出部署... 移动互联网新媒体的快速发展,推动了以4G/5G网络技术为核心技术的移动智能手机在学生群体中的普及。随着大学学业体系的逐渐完善,大学生对综合服务与资源共享平台的需求日益增长。党的二十届三中全会《决定》对深化教育综合改革作出部署,提出“强化科技教育和人文教育协同”。本文以微信公众号“同窗请问”作为基本平台,旨在分析平台如何整合学习辅导、职业规划、生活求助及社交互动等多元功能,运用先进的互联网技术架构,构建科技–人文教育一体化。The rapid development of mobile Internet new media has promoted the popularization of mobile smartphones with 4G/5G network technology as the core technology among students. With the gradual improvement of the university academic system, college students have an increasing demand for comprehensive services and resource sharing platforms. The Decision of the Third Plenary Session of the 20th Central Committee of the Communist Party of China made arrangements for deepening the comprehensive reform of education, proposing to “strengthen the coordination of science and technology education and humanities education”. This paper takes the WeChat official account “Classmates Ask” as the basic platform, and aims to analyze how the platform integrates multiple functions such as learning guidance, career planning, life help, and social interaction, and uses advanced Internet technology architecture to build the integration of science and technology-humanities education. 展开更多
关键词 互联赋能 微信公众号 HELP 高等教育
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Addressing the Physician Mental Health Crisis with Psychoeducation:A Brief Communication
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作者 Traci N.Adams Carol S.North 《International Journal of Mental Health Promotion》 2025年第7期1045-1050,共6页
Physician mental health(MH)is in crisis,particularly in high-stress areas of medicine such as the emergency roomand the intensive care unit.The high prevalence of burnout and psychiatric illness among critical care ph... Physician mental health(MH)is in crisis,particularly in high-stress areas of medicine such as the emergency roomand the intensive care unit.The high prevalence of burnout and psychiatric illness among critical care physicians,along with delays in seeking psychiatric care,can lead to suicide,ruined careers,damaged relationships,and medical errors.Psychoeducation programs can reduce MH sick leave days,increase empathy,and enhance helpseeking attitudes.The purpose of this brief communication is to demonstrate that physician psychoeducation programs can improve patient care,improve outcomes in physicians with psychiatric illness,and improve burnout rates,and we describe the essential aspects of such a program. 展开更多
关键词 SUICIDE intensive care unitthe emergency roomand BURNOUT physician mental health psychiatric illness PSYCHOEDUCATION help seeking attitudes
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Do coping strategies play a role? Examining the effects of abusive supervision and workengagement on employees’ helping behavior
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作者 Anthony Frank Obeng Yongyue Zhu 《Journal of Psychology in Africa》 2025年第4期505-512,共8页
The study examined work engagement and coping strategies in the relationship between abusive supervision and helping behaviors among hospitality employees.Participants were 386 frontline hospitality employees(50.8%fem... The study examined work engagement and coping strategies in the relationship between abusive supervision and helping behaviors among hospitality employees.Participants were 386 frontline hospitality employees(50.8%females;38.9%with 1–5 years of experience;78.3%in the 18–40 age range).They self-reported coping strategies,abusive supervision,work engagement,and helping behaviors.Structural equation model results showed that abusive supervision to be associated with lower employee helping behaviors.Work engagement was higher with employees’helping behaviors.Engaged employees would unleash helping behaviors.Work engagement mediated the relationship between abusive supervision and helping behaviors,lowering the abusive supervision risk.Finally,avoidance of contact exacerbated the moderated abusive supervision–work engagement relationship for lower work engagement,while support-seeking and reframing exerted no moderation role.Findings suggest that avoiding an immediate supervisor exacerbates abusive supervision.Hence,applying behavior-based interviews when hiring supervisors would be of strategic advantage to employees’productivity. 展开更多
关键词 abusive supervision work engagement coping strategies employees’helping behavior
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How does perceived human-computer interaction affect employee helping behavior?
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作者 Xin Liu Zimeng Chen 《Journal of Psychology in Africa》 2025年第2期257-263,共7页
This study examined how perceived human-computer interaction(HCI)is related to employees’helping behaviors with role breadth self-efficacy and digital fluency.An online scenario experiment(study 1;female=61.3%;mean a... This study examined how perceived human-computer interaction(HCI)is related to employees’helping behaviors with role breadth self-efficacy and digital fluency.An online scenario experiment(study 1;female=61.3%;mean age=30.79 years;bachelor’s degree=68.7%)and a questionnaire survey(study 2;male=44.2%;younger than 30 years=50.6%;bachelor’s degree=61.5%)found that perceived HCI exerts a significant positive indirect effect on employee helping behavior through improved role breadth self-efficacy.This positive indirect effect is stronger when employee digital fluency is high.Findings are consistent with social cognitive theory,which proposes that the relationship among environment,individual cognition,and behavior is mutually determined,and the influence of environment on individual behavior varies with individual characteristics.The findings imply a need for employer organizations to create favorable human-computer interaction environment for employees’digital fluency to promote role breadth self-efficacy and helping behavior in the digital age. 展开更多
关键词 perceived HCI role breadth self-efficacy digital fluency helping behavior social cognitive theory
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主题2 课标词汇之社会公益
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作者 刘苏梅 《疯狂英语(新悦读)》 2025年第12期71-73,80,共4页
悦读·明其义The power of community service社区服务的力量Community service,often called volunteering,is a valuable way to contribute to society and make a positive difference.It involves offering time and skills wi... 悦读·明其义The power of community service社区服务的力量Community service,often called volunteering,is a valuable way to contribute to society and make a positive difference.It involves offering time and skills without expecting money in return,focusing on helping those in need or improving the environment.For high school students,participating in such activities not only benefits communities but also builds character and practical experience that textbooks alone cannot teach. 展开更多
关键词 practical experience helping need community service community service community serviceoften VOLUNTEERING character practical experience character building time skills
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Social anxiety and problematic Internet use in college students:The moderating role of attitudes toward seeking professional psychological help
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作者 Ronghua Wen Lan Luo +2 位作者 Shiping Luo Tianlin Chen Meng Fan 《Journal of Psychology in Africa》 2025年第2期231-239,共9页
This study investigated the relationship between social anxiety and problematic Internet use in college students,and how it is moderated by attitudes toward seeking professional psychological help.Participants were 14... This study investigated the relationship between social anxiety and problematic Internet use in college students,and how it is moderated by attitudes toward seeking professional psychological help.Participants were 1451 Chinese college students(female=60.2%;mean age=19.85 years,SD=1.89 years).They completed the Interaction Anxiousness Scale,the Attitudes Toward Seeking Professional Psychological Help Scale-Short Form,and the Problematic Internet Use Scale.The results revealed that college students with higher social anxiety reported greater severity of problematic Internet use.Moreover,students with negative attitudes toward seeking professional psychological help also reported greater severity of problematic Internet use.Notably,attitudes toward seeking professional psychological help moderated the relationship between social anxiety and problematic Internet use in college student,such that the relationship was weakened when attitudes toward seeking professional psychological help was positive.These findings suggest a need for student development and support programs for promoting openness to seeking professional psychological help if with problematic Internet use from social anxiety. 展开更多
关键词 college students social anxiety problematic Internet use attitudes toward seeking professional psychological help
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HELP法在中草药分析中的应用研究──冬虫夏草的化学成分测定 被引量:27
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作者 龚范 彭源贵 +3 位作者 崔卉 梁逸曾 AlexanderK.M.Leung Foo-timChau 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 1999年第2期199-203,共5页
基于直观推导式演进特征投影(HELP)法,对冬虫夏草子座和虫体分别进行了多组分同时定性定量测定.结果表明,HELP法能减少样本提取分离的步骤,降低色谱分离条件的要求,提高检测准确度.
关键词 冬虫夏草 多组分分析 分析 HELP
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二维色谱/光谱重叠峰的定性定量方法研究(I)——水中多种酚二维色谱/光谱重叠峰的分辨与定性定量 被引量:14
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作者 陈迪钊 梁逸曾 +2 位作者 沈海林 崔卉 俞汝勤 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 1998年第5期703-707,共5页
探讨了HELP法在水中酚类色谱重叠峰的分辨与定性定量分析中的应用.实验结果表明,各组分浓度比为1∶50的范围内分辨光谱与真实光谱十分吻合.在10-4~10-6g/mL的浓度范围内分辨色谱的定量结果线性关系良好.分辨下... 探讨了HELP法在水中酚类色谱重叠峰的分辨与定性定量分析中的应用.实验结果表明,各组分浓度比为1∶50的范围内分辨光谱与真实光谱十分吻合.在10-4~10-6g/mL的浓度范围内分辨色谱的定量结果线性关系良好.分辨下限3.0×10-7g/mL,相对标准偏差为5.0%. 展开更多
关键词 酚类 二维色谱 重叠峰分辨 分析 水样 HELP
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垃圾体渗透性试验及填埋场水文分析研究 被引量:12
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作者 柯瀚 冉龙 +1 位作者 陈云敏 冯世进 《岩土工程学报》 EI CAS CSCD 北大核心 2006年第5期631-634,共4页
探讨了城市生活垃圾水力学参数的实验测试方法,设计并制作了一套实验装置,对在不同压力条件下填埋体的渗透系数进行了实验测试。通过对实验结果的拟合分析,阐述了垃圾体渗透系数随孔隙比变化的规律。采用美国环保署的HELP模型,利用垃圾... 探讨了城市生活垃圾水力学参数的实验测试方法,设计并制作了一套实验装置,对在不同压力条件下填埋体的渗透系数进行了实验测试。通过对实验结果的拟合分析,阐述了垃圾体渗透系数随孔隙比变化的规律。采用美国环保署的HELP模型,利用垃圾体在不同压力条件下的渗透试验结果,对填埋场进行了水体平衡分析。结果表明压力场对填埋场水文状况的影响不容忽略。 展开更多
关键词 垃圾填埋场 城市固体垃圾 渗透 压缩 HELP模型
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住院老年人生活项目干预促进老年髋部骨折患者术后早期离床活动 被引量:42
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作者 霍妍 彭贵凌 +1 位作者 贾云洋 梁小芹 《护理学杂志》 CSCD 北大核心 2021年第4期76-78,81,共4页
目的降低老年髋部骨折患者术后并发症发生率,提高日常生活活动能力。方法将132例老年髋部骨折手术患者按入院时间段分为对照组68例、干预组64例。对照组实施常规康复护理措施;干预组实施住院老年人生活项目(HELP)早期离床活动方案,包括... 目的降低老年髋部骨折患者术后并发症发生率,提高日常生活活动能力。方法将132例老年髋部骨折手术患者按入院时间段分为对照组68例、干预组64例。对照组实施常规康复护理措施;干预组实施住院老年人生活项目(HELP)早期离床活动方案,包括术前预康复训练,术后离床前专项评估、无痛模式下康复训练、赋能教育、营养管理、体位管理,日常自护模式训练等。结果干预组首次离床时间显著短于对照组(P<0.01),出院时生活活动能力评分显著高于对照组(P<0.01),便秘发生率显著低于对照组(P<0.05),干预组未发生下肢深静脉血栓及肺部感染。结论基于HELP的干预有利于老年髋部骨折患者术后早期离床活动,从而降低术后并发症、提高日常生活自理能力。 展开更多
关键词 老年人 髋部骨折 脆性骨折 早期活动 早期离床 住院老年人生活项目(HELP) 多学科协助 骨科护理
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GC-MS与HELP法分析玫瑰精油化学成分 被引量:9
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作者 余峰 张彬 +2 位作者 周武 任杰 王国宇 《食品科学》 EI CAS CSCD 北大核心 2011年第10期237-240,共4页
气相色谱-质谱法(GC-MS)分析江西大马士革玫瑰精油的化学成分。各色谱峰对应的质谱于NIST标准质谱库中进行相似度检索,共匹配鉴定64个组分,占总峰面积的92.8%;分别提取6个色谱峰的色谱-质谱二维数据,直观推导式演进特征投影分析法(HELP... 气相色谱-质谱法(GC-MS)分析江西大马士革玫瑰精油的化学成分。各色谱峰对应的质谱于NIST标准质谱库中进行相似度检索,共匹配鉴定64个组分,占总峰面积的92.8%;分别提取6个色谱峰的色谱-质谱二维数据,直观推导式演进特征投影分析法(HELP)解析获得新的色谱和质谱。结果结合NIST质谱库检索,与纯品色谱对照,共鉴定出7个组分,总相对含量为49.77%。解析所得组分中,β-苯乙醇、橙花醇、L-香茅醇和香叶醇的相对含量接近ISO 9842:2003《玫瑰油》保加利亚同类油的要求。 展开更多
关键词 气相色谱-质谱法(GC-Ms) 直观推导式演进特征投影法(HELP) 玫瑰精油 化学成分
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GC-MS结合化学计量学方法用于女贞子乙醚提取物的定性定量分析 被引量:9
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作者 王向利 张良晓 +1 位作者 梁逸曾 戴慧 《中国中药杂志》 CAS CSCD 北大核心 2010年第17期2303-2307,共5页
目的:对湖南产女贞子乙醚提取物化学成分进行定性与定量分析。方法:利用气相色谱-质谱(GC-MS)进行检测;通过直观推导式演进特征投影(HELP)法对产生的二维数据进行解析得到重叠峰中各组分的纯色谱图和质谱;并利用质谱相似度结合程序升温... 目的:对湖南产女贞子乙醚提取物化学成分进行定性与定量分析。方法:利用气相色谱-质谱(GC-MS)进行检测;通过直观推导式演进特征投影(HELP)法对产生的二维数据进行解析得到重叠峰中各组分的纯色谱图和质谱;并利用质谱相似度结合程序升温保留指数(PTRI),实现了对同分异构体(特别是构象异构)组分的定性分析,最后对各组分进行相对定量分析。结果:共分辨出84个色谱峰,鉴定了其中75个组分,占乙醚提女贞子化学成分总含量的84.3%。结论:女贞子主要挥发成分为顺式油酸(cis-oleic acid,9.805%)、羽扇豆醇(lupeol,8.848%)和9,12-亚油酸[(Z,Z)-9,12-octadecadienoic acid,8.357%]。 展开更多
关键词 女贞子 乙醚提取 GC-MS 直观推导式演进特征投影法(HELP) 程序升温保留指数(PTRI)
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联用色谱和化学计量学方法分析赤芍挥发性成分 被引量:5
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作者 李国辉 兰正刚 李晓如 《中南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2007年第1期89-92,共4页
采用气相色谱-质谱(GC-MS)检测,通过直观推导式演进特征投影法(HELP)对二维色谱/质谱数据进行解析,得到各组分的纯色谱曲线和质谱,从而实现对赤芍挥发性成分的定性和定量分析。根据色谱保留时间和质谱,在质谱库中进行相似检索,实现对... 采用气相色谱-质谱(GC-MS)检测,通过直观推导式演进特征投影法(HELP)对二维色谱/质谱数据进行解析,得到各组分的纯色谱曲线和质谱,从而实现对赤芍挥发性成分的定性和定量分析。根据色谱保留时间和质谱,在质谱库中进行相似检索,实现对组分的定性分析,然后用归一化法进行定量分析。研究结果表明:从赤芍挥发性成分中共分辨出57个色谱峰,通过质谱库对分辨的纯组分进行检索,鉴定其中36个成分,占挥发性成分总含量的95.21%;赤芍主要挥发成分为水杨醛、正十六碳酸和(Z,Z)-9,12-十八碳二烯酸。 展开更多
关键词 赤芍 挥发性成分 GC/MS HELP法
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抗人Elp3的N末端抗体制备及在染色质免疫沉淀中的应用 被引量:3
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作者 李芬 田树娟 +4 位作者 许森 武玉光 孔艳 张帅 王艳芳 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2009年第10期919-925,共7页
人Elp3(human elongator protein 3,hElp3)具有组蛋白乙酰转移酶活性,是与延伸中的RNA聚合酶Ⅱ结合的elongator复合物的催化亚基,可参与组蛋白的乙酰化修饰与基因的转录延伸.Elp3及其复合物功能异常与人类多种疾病相关.为运用染色质免... 人Elp3(human elongator protein 3,hElp3)具有组蛋白乙酰转移酶活性,是与延伸中的RNA聚合酶Ⅱ结合的elongator复合物的催化亚基,可参与组蛋白的乙酰化修饰与基因的转录延伸.Elp3及其复合物功能异常与人类多种疾病相关.为运用染色质免疫沉淀等手段深入研究Elp3功能,PCR法克隆pYES2-hElp3质粒中编码hElp3的N端亲水区段(1~69氨基酸残基),构建原核表达载体pMXB10-hElp3-210,经IPTG诱导和几丁质柱纯化后,免疫兔制备多克隆抗体.ELISA检测显示,该抗体有较高的效价(不低于1∶2 500).免疫印迹实验结果表明,该抗体可与纯化的及HeLa细胞中的hElp3蛋白特异性结合.运用该抗体对转入elp3Δ菌株的人Elp3的染色质免疫沉淀实验结果表明,人Elp3可参与酵母SSA3基因的转录调控,这可能是人Elp3能够部分补偿酵母SSA3基因延迟表达缺陷的原因. 展开更多
关键词 hElp3 原核表达 多克隆抗体 染色质免疫沉淀分析
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