Study on the rice grain quality in farmer fields and its pre-harvest predictability

Tohoku University博士（農学）博士学位論文 (Thesis(doctor))thesi

Estimate methods and influencing factors of total factor productivity in China

经济增长关系到国家长期的稳定发展以及社会福利的增加，因此这是每个国 家非常重视和关心的话题。几个世纪以来，经济学家们也对这个问题进行了深入 的探索。生产函数研究的兴起，以及全要素生产率的出现使人们开始讨论经济增 长的动力或是影响因素有哪些。经过了几十年市场经济体制，我国的经济迅速发 展，并且年均GDP增长率始终保持在7%以上。但是随着经济全球化的加深，竞 争日益激烈的国际市场暴露出我国很多经济发展问题，因此讨论生产率的估计过 程和影响因素，对了解生产率如何发展以及怎样调整发展政策都具有十分重要的 意义。 由于现阶段学术界存在不同的测算生产率的方法，因此会得到不同的测算结 果。...The economical growth can promote the development of a country and the increase of social welfare. Therefore, it is a so key issue for every country. Across the centuries, many economists have studies the issue. The study of productio n function and the appearance of Total factor productivity make people want to know what the motivation of the economical growth is or what factors can affect it...学位：经济学硕士院系专业：经济研究所_产业经济学学号：2902011115209

A study of Spy Activities in Song Dynasty

内容摘要 宋代内外战争频繁，为间谍情报活动提供了广阔的发展空间，宋代也保存了大量翔实的史料，为后人研究当时的历史提供了必要的条件。但遗憾的是，迄今为止，史学界还没有对宋代间谍情报活动进行较为全面的研究。本文试图通过对宋代间谍情报活动的初步研究，来分析宋代间谍情报活动的具体运作、发展。全文分为四个部分： 第一章:宋代间谍情报活动的管理机构。本章主要通过对宋代间谍情报活动的管理机构进行考察，主要分析了两宋时期从中央到地方的间谍情报活动的管理机构，从整体上论证了两宋有严密、统一的管理间谍情报活动的机构。 第二章：宋代间谍的任务、招募及其身份。本章主要讨论宋代间谍主要担任哪些主要的任务，宋代官方...Abstract Because of frequent wars, the spy activities thrived in Song dynasty and leaved us lot of historical records. However, until recently, spy activities in Song dynasty went surprisingly neglected as a well-developed topic of study among historians. Thus, focusing on the specific execution and development of spy activities, this article tries to devot to such a topic as the following four p...学位：历史学硕士院系专业：人文学院历史学系_专门史学号：1032006115011

Easy to talk about“High”

目前有关《新潮》和新潮社的研究文章比较零散，数量不多，大部分论作将《新潮》与五四新文化运动结合起来，着重分析和阐述《新潮》对新文化运动的贡献。少部分论作有兼顾谈及《新潮》的不足和局限，但是较为简单，只是在结尾处略点一二。本文将通过分析《新潮》的办刊理念、办刊主旨和目的，刊物布局和刊物内容等方面内容并结合陈衡哲的《西洋史》对欧洲文艺复兴的阐释和当代一些关于欧洲文艺复兴运动的研究论著来阐释《新潮》如何将欧洲文艺复兴的重大成果、影响和近代西洋的新知及中国新文化运动的一些主张结合起来来构建救国之路，并通过这些阐释探讨《新潮》的创办所走入的误区和它在通往中国文艺复兴之路上对五四新文化运动所做出的独特的贡...Now on the hip and trendy the article is fragmented, quantity, most of the theory on the hip "new cultural movement and may be combined, analysis and clarifications on the hip to the new culture movement in a small contribution. There are the requirements of the high, and limitations, but the relatively simple, but in the end of a point or two. The article through the analysis of the high ideals a...学位：文学硕士院系专业：人文学院中文系_中国语言文学学号：1022008115244

论我国撤并乡镇改革

当前我国某些地区出现乡镇行政区划改革,有一些乡镇改革已经完成,还有些正在酝酿改革。本文主要探讨我国撤并乡镇的原因、撤并乡镇的几种方式以及适合我国乡镇撤并的方式

General Life Satisfaction and Self-esteem of University Students

目的 :研究大学生的一般生活满意度及其与自尊的关系。方法 :运用一般生活满意度量表和自尊量表对 12 0名大学生进行测试。结果 :本组大学生的一般生活满意度总体处于中等水平 ,其中女生平均分为 4 3 1,男生平均分为 3 65 ,女生生活满意度显著高于男生 (t =3 2 1,P <0 0 1) ; 来自城市学生的平均分为 4 3 0 ,来自农村学生的平均分为 3 67,城市学生生活满意度显著高于农村学生 (t =3 0 6,P <0 0 1)。12 0名大学生的自尊总均分约 3分 ,属较高水平 ,女生高于男生 ,城市大学生高于农村学生但差异不显著。高自尊组学生生活满意度高于低自尊组学生。结论 :大学生对现在的生活中等程度满意 ; 其生活满意度存在性别和地区差异。自尊水平高的大学生 ,其生活满意度亦比较高

Capacity Modulation Device with Changing Concentration of Mixture Refrigerant:A State-of-the-art Review

Air source heat pump is widely used, and a capacity modulation with concentration of mixture refrigerant is a new type modulation of environment protection and energy conservation. In this paper, the state of the art of existing variable concentration devices with mixture refrigerant is presented and their types are described according to their locations in the system. The analysis results indicate that the variable concentration device should be set at the outlet of liquid refrigerant in order to change concentration of mixture refrigerant in air source heat pump. Moreover, a rectification section is more effective to change concentration than a gasliquid separator or liquid reservoir, and the middle throttling apparatus should be an electronic regulation device other than a capillary tube. The improvement and application of variable concentration devices in air source heat pumps are also discussed

Diet composition of Difflugia tuberspinifera( testate amoeba) based on a clone library technique

瘤棘砂壳虫是东亚特有的原生动物,广泛分布于长江与珠江中下游以及福建地区的湖泊和水库,作为水生态系统的捕食者,在维持水生态系统的结构与功能方面发挥着重要作用。利用18S rrnA基因PCr扩增和克隆文库测序等分子生物学技术方法,从基因水平研究瘤棘砂壳虫的食物组成。结果表明:所获得的46条序列在97%相似度水平含有11类OTuS(OPErATIOnAl TAXOnOMIC unITS,操作分类单元),其中包括轮虫6个,桡足类5个,说明瘤棘砂壳虫的捕食类群以轮虫和桡足类为主,同时也证明单细胞生物可以直接以多细胞的后生动物为食。此外,通过克隆文库测序技术分析原生动物的食物组成比例,不仅是一种方便、高效、快速,重复性高的方法,同时也为分析原生动物的生态功能提供了一种新的视角。Difflugia is a morphologically diverse genus of the free-living shelled amoeboid protozoa that are important components of freshwater ecosystems and play crucial roles in nutrient cycles and energy flow through food webs.Difflugia tuberspinifera is an endemic species of East Asia and is widely distributed in freshwater lakes and reservoirs in China.Clearly,this species plays a critical role in maintaining the structure and function of freshwater ecosystems.However,little is known about its diet composition and predatory behavior at both species and gene levels.This testate amoeba( D.tuberspinifera) was first found in the Wujiang River,Guizhou Province,China.Subsequently,more detailed studies on its morphology and biometry have been done on natural populations from Yangtze River and Pearl River valleys,and Fujian reservoirs.Recently,Han et al.illustrated that D.tuberspinifera is an active and agile hunting carnivore that can capture swimming prey including micro-particulates,rotifers,and other metazoans.In previous studies,however,the specimen identifications were done by microscopic examination,which requires a broad and deep taxonomic knowledge and is verylaborious,time-consuming,and somewhat variable because of insufficient taxonomic resolution.In order to facilitate the identification of diet composition in D.tuberspinifera,an inexpensive,efficient,rapid and easy-to handle gene clone library has been developed for diet detection and analysis.The plankton samples were collected from the Hubian Reservoir in Xiamen city in September of 2010.Individual cells were isolated using a glass capillary under an inverted microscope and washed 3—5 times with distilled water before DNA extraction and PCR amplification.The 18 S rRNA gene was amplified by the universal eukaryotic primers,and the purified PCR products were ligated into the p GEM-T vector and transformed into Escherichia coli DH5α-competent cells.In total,46 plasmids containing target gene fragments were successfully identified and sequenced.Each sequence was compared with sequences available in the Gen Bank database using BLAST,and the closest relatives were identified for diet or food composition analysis.Finally,11 OTUs( operational taxonomic units) were identified at 97% sequence similarity level,and they belonged to either Rotifera( 52%) or Copepoda( 48%).Our results,combined with existing data,suggested that:1) the diet composition of Difflugia tuberspinifera is composed of both rotifera and copepoda species;2) unicellular protozoa are not only the food of metazoa,but they can also prey on multicellular micro-metazoa;3) molecular methods are universally applicable,and the SSU rRNA( small subunit ribosomal RNA) gene clone library is an efficient,rapid,and repeatable approach to study the diet composition of protozoa.国家自然科学基金项目(31172114;30800097); 福建省杰出青年科学基金项目(2012J06009

利用表面增强拉曼光谱快速鉴别卷烟生产中烟用香精香料

烟用香精香料的配方是卷烟工业中的核心技术,也是构建不同特色卷烟产品的关键之一。然而,现有的香精香料质量评价手段主要是人工嗅香和测定某些特定的物性指标,如折光指数、相对密度、酸值、挥发份总量等。在实验室科研中还有使用色谱-质谱联用等方法。但是上述手段仍存在较多问题,比如受主观意识影响,操作繁琐,前处理耗时长,费用高,灵敏度低等。基于此,本文开发了一种利用表面增强拉曼光谱技术结合主成分分析算法来快速鉴别实际生产中不同种类、不同掺兑样的烟用香精香料的方法。本文利用该方法成功获取不同种类、同一种类不同生产批次及烟用香精香料不同掺兑量样品的增强拉曼谱图。经主成分分析表明不同种类以及不同掺兑量样品的散点分布在不同区域,直接区分度高;同一种类不同生产批次的香精香料谱图类似,在散点图中较为集中;说明不同生产批次的样品以及不同掺兑量的样品都可以与其他种类的香精香料标准样品进行有效区分。本文利用表面增强拉曼光谱结合主成分分析算法对烟用香精香料进行检测的方法操作简易,检测快捷,成本低廉,结果便于分析识别,适用于烟用香精香料实际生产中的质量控制。国家自然科学基金(No.21522508)浙江中烟工业有限责任公司科技项目(No.ZJZY2016C002