Results 21 to 30 of about 2,979 (147)

The Resistance Research and Application of Typical Plants for Island Vegetation Restoration [PDF]

open access: yes, 2016
植被是海岛生态系统的重要组成部分,海岛植被修复对加快恢复受损的海岛生态环境,改善海岛居民的生活生产条件起关键作用。目前,我国大部分海岛生态破坏比较严重,而海岛植被修复工作起步较晚,海岛植被修复技术还不完善,对环境恶劣海岛植被修复依然缺乏良策。本文依托平潭海岛景观生境修复技术研究与示范项目,以木麻黄(Casuarinaequisetifolia)、夹竹桃(Neriumindicum)和台湾相思(Acaciaconfusa)为实验材料,室内人为控制干旱胁迫、根系盐胁迫和叶片盐胁迫的程度及时间 ...
陈慧英
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Effect of Methyl Jasmonate Combined with Calcium Chloride Treatment on Storage Quality of Dictyophora rubrovalvata [PDF]

open access: yes, 2023
The aim of this study was to investigate the effects of combined treatment of methyl jasmonate and calcium chloride on storage quality of Dictyophora rubrovalvata. The Dictyophora rubrovalvata was used as the experimental material in this experiment, and
Chao MA   +6 more
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Effect of Ba Zhu Decoction(BZD) on the related mechanisms of Aβ formation in 5xFAD transgenic mice [PDF]

open access: yes, 2016
目的:巴茱合剂是本人硕士导师治疗阿尔兹海默病(AD)的经验方,前期临床研究证明,巴茱合剂能有效缓解AD患者认知功能障碍,但对巴茱合剂的作用机制尚未深入研究。本文旨在通过AD转基因动物再次验证巴茱合剂的治疗效果,并进一步探索巴茱合剂治疗AD的相关分子生物学机制。 方法:(1)选取新型APP/PS1转基因小鼠(5xFAD小鼠)作为实验对象。将3月龄5xFAD小鼠随机分为模型组(5xFAD-Control)、巴茱合剂低剂量组(5xFAD-BZD-L)、中剂量组(5xFAD-BZD-M)、高剂量组(5xFAD ...
彭阿香
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Study on Alleviation Mechanism of Hydrogen Sulfide on Copper Stress in Rice Seedlings [PDF]

open access: yes, 2015
硫化氢(hydrogensulfide,H2S)是继一氧化氮(nitricoxide,NO)、一氧化碳和(carbonmonooxide,CO)之后被广泛关注的气体信号分子,低浓度的H2S在动物、植物和微生物中被证实参与了众多生理生化过程,调节了有机体的生长发育。H2S在植物应对盐害、干旱、重金属胁迫、冷热胁迫中发挥重要作用,增强植物对逆境的抵抗力。 铜污染是环境污染中不容忽视的一类重金属污染。本文中,我们以水稻(Oryzasativa)为材料,研究了H2S对铜胁迫的影响。结果显示低浓度的H2S ...
尹珊珊
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Analysis of Volatile Compounds in Ghana Cocoa Butter and Cocoa Mass(加纳可可脂与可可液块中挥发性成分分析) [PDF]

open access: yesShipin kexue jishu xuebao, 2015
Purge and trap (P&T) was used to extract volatile compounds in Ghana cocoa butter and cocoa mass and gas chromatography-mass spectrometry (GC-MS) was used to identify volatile compounds.
LIU Mengya(刘梦娅)   +5 more
doaj   +1 more source

Enrichment and Resistance Mechanism of Aegiceras corniculatum to Gas Elemental Mercury [PDF]

open access: yes, 2016
红树林是生长在热带、亚热带地区的木本植物群落,具有极为重要的生态价值和经济价值。红树植物具有较高的富集汞的能力,其叶与大气之间存在持续的汞交换过程。目前,关于红树植物对离子汞耐受性的研究已有很多,而有关红树植物对气态汞胁迫的响应及其耐受性机制的研究却鲜有报道。因此,本研究以桐花树(Aegicerascorniculatum)幼苗为材料,利用封闭通量箱测定其在饱和气态汞(Hg0)胁迫下的生理、解剖结构和亚细胞结构的变化,探究桐花树叶片与大气汞交换的昼间变化规律及其影响因素。探讨其对汞的富集和耐受机制 ...
袁俊
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Effects of Aureofuscin and Natamycin on Quality and Metabolizing Enzymes of Dong Jujube(金褐霉素和纳他霉素对冬枣品质及代谢相关酶的影响) [PDF]

open access: yesShipin kexue jishu xuebao, 2015
Effects of Aureofuscin on postharvest fruit quality during storage was investigated and a promising antifungal agent to be used industrially as a food preservative was developed. Dong Jujube was treated with Aureofuscin (1.0g/L) and Natamycin(1.0g/L) and
WEI Jie(魏 杰)   +3 more
doaj   +1 more source

Physiological and Proteomic Analyses in Responses of Mangrove Plant Kandelia obovata Seedling Leaves to Submergence Stress [PDF]

open access: yes, 2016
水淹是限制多数植物生长和发育的重要限制因子。红树植物是生活在滨海湿地的一类对水淹具有较高耐性的木本植物。近年来,在对红树林湿地的围垦和鱼塘养殖的开发过程中经常会造成对红树植物的严重水淹,甚至是长时间、整株植物的被淹(特别是对幼苗)。然而,红树植物对这种长时间、全淹胁迫的响应仍有待研究。在本研究中,基于蛋白质组学技术,我们采用红树植物秋茄(Kandeliaobovata)幼苗为实验材料,来探究红树植物秋茄耐受长时间、全淹胁迫的生理响应和分子机制。主要研究结果如下: (1)秋茄幼苗持续全淹处理 ...
李赞
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Effect of root exudate on behavirors of polycyclic aromatic hydrocarbons (PAHs) in mangrove sediments [PDF]

open access: yes, 2016
红树林是生长在热带、亚热带海岸潮间带的木本植物群落,对维护河口、海滨生态平衡和保护环境等方面具有重要意义。近年来,大量污染物被排放到红树林湿地生态系统中,其中以多环芳烃(Polycyclicaromatichydrocarbons,PAHs)为代表的有机污染物最为明显。由于PAHs具有较强的致癌、致畸、致突变作用,使其极易在沉积物中被吸附固定,研究根系分泌物对沉积物中PAHs的活化作用,植物修复PAHs的根际响应机制及其在根际微环境中的降解机理,将为深入探讨PAHs在根际沉积物中的生物有效性 ...
贾慧
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Study on the Adsorption of Iron Ion by Nano-Al2O3 and the Growth Effect on Microalgae [PDF]

open access: yes, 2016
本文首先研究了海水体系中纳米Al2O3对Fe离子的吸附过程,通过单因素和正交试验探讨了Fe初始浓度、海水pH和盐度等因素对吸附过程的影响。其次,以普通小球藻和球等鞭金藻为受试对象,用藻体的叶绿素a含量、蛋白质含量、超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量为指标,研究了不同浓度和粒径的纳米Al2O3、与Fe共存的纳米Al2O3对海洋微藻的生长效应。主要结论如下: (1)纳米Al2O3对铁离子吸附的平衡时间为15min,为准二级反应吸附,平衡吸附量qe为8.55mg/g。同等条件下(25°C ...
吴晓梅
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