检索结果-南通市图书馆

Natural variation in the cytochrome c oxidase subunit 5B OsCOX5B regulates seed vigor by altering energy production in rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第9期23卷 2898-2910页

作者： Chengwei Huang Zhijuan Ji Qianqian Huang liling peng Wenwen Li Dandan Wang Zepeng Wu Jia Zhao Yongqi He Zhoufei Wang Laboratory of Seed Science and Technology/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/South China Agricultural University Guangzhou 510642China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572025 China National Rice Research Institute Hangzhou 310006China

Seed vigor is a crucial trait for the direct seeding of *** we examined the genetic regulation of seed vigor traits in rice,including germination index(GI)and germination potential(GP),using a genome-wide association study *** major quantitative trait locus,qGI6/qGP6,was identified simultaneously for both GI and *** candidate gene encoding the cytochrome c oxidase subunit 5B(OsCOX5B)was validated for qGI6/*** disruption of OsCOX5B caused the vigor traits to be significantly lower in Oscox5b mutants than in the japonica Nipponbare wild type(WT).Gene co-expression analysis revealed that OsCOX5B influences seed vigor mainly by modulating the tricarboxylic acid cycle *** glucose levels were significantly higher while the pyruvic acid and adenosine triphosphate levels were significantly lower in Oscox5b mutants than in WT during seed *** elite haplotype of OsCOX5B facilitates seed vigor by increasing its expression during seed ***,we propose that OsCOX5B is a potential target for the breeding of rice varieties with enhanced seed vigor for direct seeding.

关键词： cytochrome c oxidase natural variation rice seed vigor

在线全文

学校读者我要写书评

暂无评论

论藏族旋律的复合性及其文化背景

音乐艺术（上海音乐学院学报） 2007年第2期 89-95页

作者：蒲亨强彭李玲南京师范大学音乐学院

藏族旋律绝无仅有的民族风格呈现出某种复合性,它并非单纯表现为南音或北音风格,而是在南音风格基础上又兼容了较多北乐风范。本文着重从旋律形态角度就其风格特征进行具体分析论证,并论及其风格形成的经济、地理、人文历史等文化背景... 详细信息

藏族旋律绝无仅有的民族风格呈现出某种复合性,它并非单纯表现为南音或北音风格,而是在南音风格基础上又兼容了较多北乐风范。本文着重从旋律形态角度就其风格特征进行具体分析论证,并论及其风格形成的经济、地理、人文历史等文化背景特点。

关键词：藏族旋律复合性文化

Trends in the Application of Dyadic Coping in Older Adults with Mild Cognitive Impairment and Their Spouses

在线全文

学校读者我要写书评

暂无评论

Advances in Aging Research 2024年第5期13卷 107-119页

作者： Yonghong Jiang Lin Wang Lixia peng liling Wang Department of Nursing University of Jinan Guangzhou China The First Affiliated Hospital Jinan University Guangzhou China Baoan Central Hospital of Shenzhen Shenzhen China

Dyadic coping plays an important role in older adults with mild cognitive impairment and their spouses. Significant correlations were found between dyadic coping and self-efficacy, anxiety and depression, marital quality, and quality of life in elderly patients with mild cognitive impairment and their spouses, and there were gender differences, with a 36.1% [P = 0.028, OR = 0.639, 95% CI (0.429, 0.952)] and 54% [P = 0.004, OR = 0.460, 95% CI (0.269, 0.785)] reduction in the risk of MCI and dementia for older men aged 65 - 69 years with a spouse and for those aged 80 years and older with a spouse, respectively. In contrast, there was no significant difference in the association between having or not having a spouse and developing MCI and dementia in older women (all P > 0.05). Psychosocial interventions, skills interventions, and exercise from the perspective of dyadic relationships were effective in improving the physical and mental health of older adults with mild cognitive impairment and their spouses. However, there is a lack of specific intervention programs for dyadic relationships in the local cultural context as an entry point. Therefore, it is necessary to draw on internal and external relevant literature to treat both partners as a whole for intervention, provide personalized social, cognitive and motor therapy for patients and promote the integration and participation of caregivers, help patients and spouses to improve the sense of well-being and intimacy, reduce the burden of caregivers, and build a dyadic coping intervention program suitable for elderly patients with mild cognitive impairment in China. The current article aims to provide a conceptual review focusing on dyadic coping care to inform the development of a dyadic intervention program suitable for older adults with mild cognitive impairment in China. This review outlines the theoretical concepts, assessment tools, current state of research, and intervention methods for mild cognitive impairmen

关键词： Mild Cognitive Impairment Dyadic Coping Couples Review

一体化^(18)F-FDG PET/MRI用于诊断胰腺肿瘤

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国医学影像技术 2022年第1期38卷 83-87页

作者：高欣冯刚孙明祥袁正彭莉玲上海全景医学影像诊断中心上海200233 复旦大学附属华东医院放射科上海200040

目的探讨一体化^(18)F-FDG PET/MRI鉴别胰腺良、恶性病变和检测淋巴结和/或远处转移的价值。方法回顾性分析45例临床疑诊胰腺肿瘤并接受^(18)F-FDG PET/MRI患者,包括38例胰腺恶性病变和7例良性病变,以病理或随访结果为标准,评价一体化PE... 详细信息

目的探讨一体化^(18)F-FDG PET/MRI鉴别胰腺良、恶性病变和检测淋巴结和/或远处转移的价值。方法回顾性分析45例临床疑诊胰腺肿瘤并接受^(18)F-FDG PET/MRI患者,包括38例胰腺恶性病变和7例良性病变,以病理或随访结果为标准,评价一体化PET/MRI诊断胰腺良、恶性病变的效能。结果取3.20为最大标准摄取值(SUV_(max))的截断值,^(18)F-FDG PET/MRI诊断胰腺癌的敏感度、特异度、准确率、阳性预测值和阴性预测值分别为89.47%(34/38)、85.71%(6/7)、88.89%(40/45)、97.14%(34/35)和60.00%(6/10);以1.78作为平均表观弥散系数(ADC_(mean))的截断值时,其敏感度、特异度、准确率、阳性预测值和阴性预测值分别为97.37%(37/38)、71.43%(5/7)、93.33%(42/45)、94.87%(37/39)和85.71%(6/7);联合应用二者则分别为100%(38/38)、71.43%(5/7)、95.56%(43/45)、95.00%(38/40)和100%(5/5)。15例检查前未发现肝、肺、骨及淋巴结转移患者中,根据^(18)F-FDG PET/MRI结果,12例的治疗方案获得修正。结论一体化^(18)F-FDG PET/MRI是检测胰腺癌淋巴结和/或远处转移的较好方法;SUV_(max)与ADC_(mean)对于鉴别胰腺良、恶性病变具有较高价值。

关键词：胰腺肿瘤正电子发射断层显像磁共振成像

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

纳米粉体表面改性的必要性和应用前景

船电技术 2011年第3期31卷 35-37页

作者：彭丽玲广东省石油化工职业技术学校广东佛山528222

纳米粉体特有的小尺寸效应、量子效应和表面效应,表现出许多特殊的性质,但纳米粉体自身的缺陷却限制了其应用的领域。文章指出了纳米粉体的缺陷及改进目的,介绍了纳米粉体表面改性的主要应用,指出随着改性技术的成熟,纳米粉体的应用将... 详细信息

纳米粉体特有的小尺寸效应、量子效应和表面效应,表现出许多特殊的性质,但纳米粉体自身的缺陷却限制了其应用的领域。文章指出了纳米粉体的缺陷及改进目的,介绍了纳米粉体表面改性的主要应用,指出随着改性技术的成熟,纳米粉体的应用将更广泛。

关键词：纳米粉体表面改性应用

Assessment of cheese sign and its association with vascular risk factors:Data from PUMCH dementia cohort

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2024年第7期137卷 830-836页

作者： Xinying Huang Bo Hou Jie Wang Jie Li Li Shang Chenhui Mao liling Dong Caiyan Liu Feng Feng Jing Gao Bin peng Department of Neurology State Key Laboratory of Complex Severe and Rare DiseasePeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Department of Radiology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

Background:In the clinic,practitioners encounter many patients with an abnormal pattern of dense punctate magnetic resonance imaging(MRI)signal in the basal ganglia,a phenomenon known as"cheese sign".This sign is reported as common in cerebrovascular diseases,dementia,and old ***,cheese sign has been speculated to consist of dense perivascular space(PVS).This study aimed to assess the lesion types of cheese sign and analyze the correlation between this sign and vascular disease risk ***:A total of 812 patients from Peking Union Medical College Hospital(PUMCH)dementia cohort were *** analyzed the relationship between cheese sign and vascular *** assessing cheese sign and defining its degree,the abnormal punctate signals were classified into basal ganglia hyperintensity(BGH),PVS,lacunae/infarctions and microbleeds,and counted *** type of lesion was rated on a four-level scale,and then the sum was calculated;this total was defined as the cheese sign *** and Age-Related White Matter Changes(ARWMC)scores were used to evaluate the paraventricular,deep,and subcortical gray/white matter ***:A total of 118 patients(14.5%)in this dementia cohort were found to have cheese ***(odds ratio[OR]:1.090,95%confidence interval[CI]:1.064-1.120,P<0.001),hypertension(OR:1.828,95%CI:1.123-2.983,P=0.014),and stroke(OR:1.901,95%CI:1.092-3.259,P=0.025)were risk factors for cheese *** was no significant relationship between diabetes,hyperlipidemia,and cheese *** main components of cheese sign were BGH,PVS,and lacunae/*** proportion of PVS increased with cheese sign ***:The risk factors for cheese sign were hypertension,age,and *** sign consists of BGH,PVS,and lacunae/infarction.

关键词： Dementia Cerebrovascular disease Cheese sign Dense punctate lesions Basal ganglia Risk factor White matter

在线全文

学校读者我要写书评

暂无评论

“西部之光”计划顺利实施

中国科学院院刊 1998年第1期13卷 78-79页

作者：彭丽玲中国科学院人事局!北京100864

“西部之光”人才培养计划〈简称“西部之光”计划〉是中国科学院于1996年为贯彻落实党中央、国务院关于加快我国西部地区经济建设和社会发展的方针，促进全院结构性调整而推出的一项重大举措，是我院“九五”期间实施的青年科技骨干... 详细信息

“西部之光”人才培养计划〈简称“西部之光”计划〉是中国科学院于1996年为贯彻落实党中央、国务院关于加快我国西部地区经济建设和社会发展的方针，促进全院结构性调整而推出的一项重大举措，是我院“九五”期间实施的青年科技骨干培养计划的一个组成部分。经过一年多的实施，首批入选青年学者主持的受资助项目进展顺利，第二批入选者及受资助的项目已于日前揭晓，近期内即将启动。

关键词：经济研究所西部地区小麦新品种细胞工程科研团队春小麦春麦学术带头人青年西北高原配额结构性调整

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

纳米二氧化锆包覆氧化铝方法的研究

广东化工 2010年第7期37卷 53-54页

作者：彭丽玲广东省石油化工职业技术学校化工科广东广州510520

21世纪是纳米主导的科技,由于纳米粒子具有特殊的性质和不可避免的缺陷,使得纳米粉体改性应用广泛;文章从纳米二氧化锆表面包覆氧化铝的机理出发,讨论碱性条件的选择,陈化阶段的pH,温度等因素的影响;包覆氧化铝的纳米粉体亲油疏水性得... 详细信息

21世纪是纳米主导的科技,由于纳米粒子具有特殊的性质和不可避免的缺陷,使得纳米粉体改性应用广泛;文章从纳米二氧化锆表面包覆氧化铝的机理出发,讨论碱性条件的选择,陈化阶段的pH,温度等因素的影响;包覆氧化铝的纳米粉体亲油疏水性得到一定的改善,能有效分散于有机溶剂如二甲苯和醋酸丁酯中,有希望应用于油性涂料中。

关键词：纳米二氧化锆表面包覆氧化铝有机溶剂

采用MRI T2＊值定量评估重型β地中海贫血患者体内器官铁沉积的价值

在线全文

学校读者我要写书评

暂无评论

中华放射学杂志 2017年第4期51卷 284-287页

作者：陈钇地龙莉玲彭鹏黄仲奎李春燕广西医科大学第一附属医院放射科南宁530021

目的探讨采用MRI T2＊值定量评估重型β地中海贫血患者体内器官铁沉积的价值.方法为回顾性病例分析.患者为经基因检测诊断为重型β地中海贫血,且完成了心脏和（或）腹部MRI检查,共102例患者,其中47例接受了脾切除手术.95例行心脏MRI扫... 详细信息

目的探讨采用MRI T2＊值定量评估重型β地中海贫血患者体内器官铁沉积的价值.方法为回顾性病例分析.患者为经基因检测诊断为重型β地中海贫血,且完成了心脏和（或）腹部MRI检查,共102例患者,其中47例接受了脾切除手术.95例行心脏MRI扫描;102例行腹部肝脏、胰腺及肾脏扫描,55例行脾脏扫描.测量心脏、肝脏、脾脏、胰腺和肾脏T2＊值,并测量肝铁浓度（LIC）.81例行实验室血清铁蛋白（SF）测定.采用Spearman相关分析评价SF、LIC、年龄、各器官T2＊值间的相关性.采用独立样本t检验（正态分布）或Mann-Whitney U检验（非正态分布）比较脾脏切除组与未切除组患者间肝脏、心脏、肾脏和胰腺T2＊值的差异.结果 SF与LIC呈高度正相关,与年龄呈中度正相关,与肝脏及胰腺T2＊值呈中度负相关,r值分别为0.833、0.537、-0.623和-0.403,P均〈0.05;SF与心脏、肾脏、脾脏T2＊值无相关性（P〉0.05）.肝脏T2＊值与LIC呈高度负相关（r=-0.925,P〈0.01）.各器官T2＊值间,除了肝脏和脾脏、肝脏和胰腺间的T2＊值呈中度相关（r值分别为0.634、0.530,P〈0.01）,其他器官间的T2＊值均无相关性（P〉0.05）.LIC与年龄呈中度正相关（r=0.457,P〈0.01）.脾脏切除组患者的肝脏、胰腺T2＊值低于未切除组,肾脏T2＊值高于未切除组,差异均有统计学意义（P均〈0.05）;心脏T2＊值差异无统计学意义（P〉0.05）.结论重型β地中海贫血患者容易发生心脏和腹部多器官的铁沉积过量,采用MRI技术定量测量T2＊值可以反映体内铁过载情况.

关键词： β地中海贫血磁共振成像铁沉积过量