A study of carbon fixation and proteomic analysis of a deep-sea Roseobacter bacteria

玫瑰杆菌类群（Roseobacterbacteriaclade）是海洋微型生物α-变形菌中红螺菌科的主要分支，在海洋中分布广泛、普遍存在，并参与海洋碳循环和硫循环。该类群系统发育相近，但具有非常丰富的形态和生理特征。玫瑰杆菌生活环境多样复杂，生存代谢方式受到环境的影响呈现多样化，并具有一定的灵活性。人们对分布在近岸、表层及深海沉积物的可培养的玫瑰杆菌已有相当认识，但处于深海这片广阔区域的玫瑰杆菌却少有分离及培养。本研究基于深海玫瑰杆菌ThiobacimonasprofundaJLT2016的全基因组测序结果，发现其具有多样可变的代谢方式，例如具有异养代谢中心环节糖酵解途径及三羧酸循环途径的关键...The Roseobacter clade is a major lineage of the Rhodobacteraceae within the Alphaproteobacteria. Strains of this clade are widespread in marine environments and make a contribution to marine carbon and sulfur cycle. The Roseobacter clade shows a phylogenetically coherent, but has heterogeneous phenotypic and physiological characteristics. What’s more, a large variety of habitats lead to the flexib...学位：理学硕士院系专业：海洋与地球学院_海洋生物学学号：2232013115142

理解的直觉实验研究

持久的哲学论争形成了关于理解的两大传统主张:我们所能理解的每一个命题都必须由我们所亲知的成分组成;理解是知道怎样做的一部分。跨时三年的关于理解的直觉实验研究发现这两大基于专家直觉的主张并不都能得到大众直觉的支持,关于理解的修正的赖尔式主张既获得了哲学论证,也获得了大众直觉的支持。专家直觉与大众直觉对理解的认知研究都非常有意义

Looking into the Evolution of Mandarin duck Group from Red Rose

《红玫瑰》创刊于1924年7月2日，终刊于1932年1月28日，共出版350期，出版历时长达七年之久，是现代通俗文学期刊中寿命最长的刊物之一，被公认为鸳鸯蝴蝶派的代表刊物，展现了通俗文学杂志的第二代风貌。作为一份大众通俗刊物，《红玫瑰》在二十世纪二三十年代的上海非常流行，深受市民读者喜爱，但在接下来的时间长期遭受人们的非议与批判，并未得到国内学术界应有的客观且公正的评价。八十年代中期后，随着学术界对鸳鸯蝴蝶派及通俗文学研究的深入，这份期刊成为鸳鸯蝴蝶派研究的原始佐证史料不断被提及，但遗憾的是将其作为研究对象的专文专著尚未出现。笔者力图通过翔实的史料研究梳理与突入文本内部的感性体认，还《红玫瑰》..."Red Rose," was published in the July 2, 1924, finally published in the January 28, 1932, a total of 350 publications, lasting for seven years. It is the longest publication in modern popular literature periodicals, and it is recognized as the behalf publications of "Mandarin duck Group", for it shows the "the second-generation style of Popular Literature magazine". As a popular literary publicati...学位：文学硕士院系专业：人文学院中文系_中国现当代文学学号：2005130005

桃花之于玫瑰——中西方俗词语之爱情意象探微

文化的全球化并非世界文化的同质化。文明的冲突必然给文化打下深深的烙印,并体现在人类生活的方方面面。本文从中西方对比的角度,集中考查了国俗词语中原初语用上意在象征爱情的植物词汇——桃花与玫瑰的趋同性与趋异性,揭示了因文化背景和传统习俗的差异而衍生出的不同文化寓意

Research on the Extraction of Total Flavonoids from Rose Residues of Rose rugosa cv. Plena and their Activities in Vitro

This paper studies the total flavonoids extraction and activity in vitro of Rose rugosa cv. Plena residues from Shandong province. Single factor experiment and orthogonal experiment are designed to determine the optimal extraction conditions for flavonoids. The antioxidant and antimicrobial activities of total flavonoids in vitro are evaluated by free radical scavenging method and Oxford cup method. Results show that the optimal extraction process for flavonoids are as follows: set the ethanol concentration to 60%and the solid-liquid ratio of 1∶30, then shake the rose residues at 80 ℃ for 1.5 hours, after which run it ultrasonic treatment for 45 minutes at 140 W and 60 ℃. This process gives us the total flavonoids content of 58.53 mg/g. The extracted flavonoids from rose residues demonstrates good antioxidant activity. The scavenging rates of DPPH· radical, ABTS+ radical and hydroxyl radical are 91.58%, 73.71% and 467.91 U/mL respectively. The total flavonoids have good antimicrobial activity on Staphylococcus aureus and Bacillus cereus. The flavonoids could significantly inhibit Staphylococcus aureus. This study would laid a solid foundation for the comprehensive utilization of Rose rugosa cv. Plena residues

Progress of dye-sensitized water-splitting for hydrogen production

The mechanism of dye-sensitized water-splitting for hydrogen production is introduced. Research works on the use of different dye molecules and redox mediators are reviewed. It is found that the light absorption characteristics of dye molecules, excited dye potential level, the relative position of semiconductor conduction band, the adsorption of dye molecules on the surface of semiconductor, as well as the bonding between dye molecules and semiconductor, determine the photon absorption and electron injecti...介绍了染料敏化分解水制氢的基本原理。综述了染料分子的选取,使用氧化还原调节剂的机理和研究进展。指出染料分子对光谱的吸收特性,激发态染料分子能级与半导体导带的相对位置,染料分子与半导体的吸附情况,表面键合强度直接影响对光子的吸收,电子的注入,从而影响产氢量。此外,I-/I3-作为氧化还原调节剂可有效还原染料分子,实现持续产氢。最后提出了染料敏化分解水制氢的间歇式反应器结构,以及通过选择用于敏化的半导体来提高产氢率的思路。published_or_final_versio

Antioxidant and Perservation Effect of Aromatic Hydrosol and Its Application in Fresh-Cut Agaricus bisporus (Lange) Sing. Preservation

Polyphenol oxidase (PPO) is one of the most important factors affecting the browning of fresh-cut fruit and vegetable products. In this research, the effect of aromatic hydrosol on the activity of PPO and its biological antioxidant effect were studied. Aromatic hydrosol extracted from 12 kinds of aromatic plants by steam distillation all inhibited the activity of PPO. Eight of the 12 aromatic hydrosols had a significant scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2’-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cation, and 2-phenyl-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl (PTIO) radicals. Total antioxidant capacity assay showed that they had strong antioxidant activity. Analysis by electronic nose and gas chromatography-mass spectrometry (GC-MS) showed that terpenoids and aromatic compounds were the major volatile components of aromatic hydrosol. The efficacy of aromatic hydrosol was evaluated in preserving the quality of fresh-cut mushrooms (Agaricus bisporus). The results showed that compared with the control group, the PPO activity in mushrooms treated with aromatic hydrosol was inhibited, and the increase in browning index (BI) was delayed. In addition, total phenol content, hardness, mass loss and total microbial load were effectively controlled. These results indicate that aromatic hydrosol treatment has a positive effect on maintaining the quality of fresh-cut mushrooms

Research progress on ocular rosacea

Ocular rosacea is a chronic inflammatory disease that affects the ocular surface. The clinical manifestations are blepharitis and Meibomian gland dysfunction, severe corneal involvement and visual impairment. The study of the pathogenesis in recent years is believed to be the result of a combination of risk factors. Its clinical manifestations lack specificity, but early diagnosis and standard treatment can significantly improve symptoms and restore vision. This review focuses on the latest research progress in ocular rosacea

叶芝诗歌中玫瑰的多重意义

玫瑰是爱尔兰著名诗人威廉·巴特勒·叶芝钟爱的诗歌意象。叶芝在作品中赋予了玫瑰多重象征含义：浪漫多情的玫瑰象征着诗人对美好爱情的执著追求;热烈明艳的玫瑰代表着诗人对祖国的满腔热血;高贵神秘的玫瑰则寄托着诗人对永恒之美的不懈探寻。这些内涵丰富的玫瑰意象体现了叶芝对个人情感、家国命运和精神理想的深刻思考

Abundance and diversity of planktonic bacteria and Roseobacter clade in the Arctic Kongsfjorden

作为全球冷源之一的北极海域，蕴藏着数量庞大、种类繁多的微生物，这些微生物在海洋食物链中是重要的食物来源，并且在有机物循环及海洋生物地球化学循环中扮演着重要角色，因此了解北极海洋微生物的群落结构和确定优势种群非常重要。广泛分布于海洋环境的玫瑰杆菌支系具有一些重要的生态功能，如好氧不产氧光合作用、CO氧化、硫转化、降解芳香族化合物、产生次级代谢产物以及释放基因转移因子等，这些功能决定了玫瑰杆菌支系可能在海洋上层生态系统的碳、硫循环中具有重要的生态学地位并发挥着举足轻重的生态功能。已有的研究主要集中在热带、亚热带等海域，少有相关工作在极地低温海域开展。王湾作为北极地区典型海洋生态系统之一，夏季浮游细...Arctic ocean contains a huge number and variety of microorganisms.These organisms not only are an important food source in marine food webs,but also play crucial roles in the cycling of organic matters in marine ecosystems.Understanding the Arctic marine microbial community structure and determine which bacterial groups are the dominant members are very important. Roseobacter clade is widespread i...学位：理学硕士院系专业：生命科学学院_微生物学学号：2162010115237