and

摘要： Art is much less important than life,but what a poor life without it!--Jasper Johns There are many different kinds of wonderful activities for us to take part in.The English Dubbing Contest(配音比赛)is for English lovers while the typing contest(打字比赛)is like a shooting game for those computerholics with flexible fingers.There is also a history speech contest to arouse our deep love for the Party and the country.And artists in each class can fully show their talents in the painting and calligraphy contest(书画比赛)and the musical instrument competition.And what makes every student crazy is the school art festival.

摘要： I want to wish the conference all the best.The Chinese Association for International Understanding(CAFIU)has organised that conference back on28 th of November 2019.It was exchanging and looking at mutual learning among civilisations.And this time we focus more on diversity of civilisations and carrying forward shared values of mankind.So this second Dialogue is an important gathering and important meeting.

摘要： As we all know,Qixi,which falls on the seventh day of the 7th lunar year,is the Chinese traditional Day.It has been named as Chinese Valentine's Day to remember the true love between two lovers.And nowadays another meaning behind the festival is showing love to older people.

摘要： Iron formations are valuable archives of sedimentary conditions and post-depositional events.However,geochemical proxies commonly used to determine genetic characteristics can be variably modified during metamorphism and deformation,hampering their use as records of regional geological events.This work focuses on strongly reworked magnetite-quartz-rich rocks from the São Josédo Campestre Massif,one of the oldest fragments of preserved crust in South America.The genetic classification of these magnetite-quartz-rich rocks is not straightforward because primary assemblages and textures were variably modified by granulite facies metamorphism during a regional Paleoproterozoic migmatization event.To address genetic ambiguities,we analyzed their magnetite and pyroxene chemistry,wholerock geochemistry,and Sm-Nd isotopes.Magnetite chemistry indicates that pyroxene-poor iron formations(Type B)are low in trace elements such as Ti,Al,V,and Mn,suggesting a chemical similarity to iron formations elsewhere.In contrast,magnetites from pyroxene-enriched Type A iron formations are rich in trace elements and more akin to magnetite crystallized from higher temperature systems,such as skarn and IOCG.The^(147)Sm/^(144)Nd of these rocks show substantial variation even at the outcrop scale,indicating a locally-controlled,highly heterogeneous mixture of Archean,Paleoproterozoic,and Neoproterozoic sources.Therefore,our geochemical tools point out to heterogenous signatures of these magnetitequartz rocks and proxies compatible with both low and high-temperature conditions and age of deposition spanning sources from the Archean to the Neoproterozoic.We interpret that the studied São Josédo Campestre magnetite-quartz rocks represent Archean iron formations with original magnetite chemistry and isotopic signatures variably modified by metamorphism and by at least one deformation-related hydrothermal event.These results contrast with similar examples from China and Greenland where iron formations either preserved the magnetite chemistry or the primary isotopic signatures.Our study indicates that metamorphism can selectively affect chemical proxies used to study iron formations and undermine the genetic classification of iron ores.Thus,these proxies should be carefully applied in the interpretation of syn-depositional environments of polydeformed belts.

摘要： [Objectives]To study the temporal and spatial variation of SOC content in cultivated land in black soil region in Liaoning Province.[Methods]Through the evaluation and analysis of the research data of this project and the data of the second national soil census,and using GIS technology,this paper studied the temporal and spatial variation characteristics of SOC in the black soil region of Liaoning Province,and provided a basis for improving cultivated land carbon storage and soil organic matter content.[Results]Since 1980,the SOC content in cultivated land in the black soil region in Liaoning Province has generally declined,and the spatial distribution difference has gradually decreased.From 1980 to 2018,the homogeneity of SOC distribution weakened,and the variation in a small range strengthened.The SOC content generally showed the characteristics of increase and decrease,and the changes in the area were scattered.[Conclusions]This study is of great significance to the sustainable utilization of land resources.

摘要： [Objectives]To explore the differences in nitrogen accumulation and transport characteristics and grain protein content of wheat varieties with different nitrogen efficiencies and their responses to irrigation.[Methods]Under field conditions,using nitrogen-inefficient varieties Luohan 17 and Xinhua 818 and nitrogen-efficient varieties Bainong 418 and Bainong 419 as materials,this paper studied the nitrogen accumulation and transport characteristics,grain protein content and protein yield of wheat with different nitrogen efficiencies under rainfed and irrigated conditions.[Results]Compared with the nitrogen-inefficient wheat varieties,the pre-flowering nitrogen transport and the shoot nitrogen accumulation at the mature stage of nitrogen-efficient wheat varieties decreased by 15.08%and 28.25%,respectively,and the grain protein content decreased by 11.66%,under rainfed conditions.Compared with rainfed conditions,nitrogen accumulation in shoots of nitrogen-inefficient wheat varieties and nitrogen-efficient wheat varieties at the mature stage increased by 6.59%and 67.05%,respectively,and grain protein content decreased by 13.50%and 3.47%,respectively,under irrigated conditions.The two nitrogen efficiency types of wheat had different responses to irrigation after flowering.After irrigation,the nitrogen accumulation of nitrogen-efficient varieties increased by 274.80%,while that of nitrogen-inefficient varieties decreased by 51.15%.Finally,the grain protein yield of nitrogen-inefficient wheat varieties remained stable,while the grain protein yield of nitrogen-efficient wheat varieties increased by 40.37%.[Conclusions]The nitrogen accumulation and transport characteristics and grain protein content of wheat varieties with different nitrogen efficiencies are different under different irrigation conditions.In production,it is necessary to take different irrigation measures in accordance with the difference in nitrogen efficiency of wheat varieties,so as to increase the protein content of wheat grains.

摘要： By grasping the characteristics and laws of the growth of excellent talents,this paper objectively analyzes the current situation of ideological and political education and the problems existing in the innovation process of ideological and political education.In accordance with the inherent requirements of the innovation of ideological and political education in colleges and universities,efforts should be made to build a specific path for the innovation of ideological and political education in colleges and universities,which is consistent with the training mode of excellent and innovative talents.

摘要： There are no handles upon a language Whereby men take hold of it And mark it with signs for its remembrance.It is a river,this language,Once in a thousand years Breaking a new course Changing its way to the ocean.It is mountain effluvia Moving to valleys And from nation to nation Crossing borders and mixing.

摘要： “I need to sell.me wool,”the boy told the merchant.The shop was busy,and the man asked the shepherd to wait until the afternoon.So the boy sat on the steps of the shop and took a book from his bag.“I didn''t know shepherds knew how to read,”said a girl''s voice behind him.The girl was typical of the region of Andalusia,with flowing black hair,and eyes that vaguely recalled the Moorish conquerors.

摘要： Dear readers,Its a brand new year,and its full of possibilities!What do you want to accomplish this year?I hope you have some goals and ideas and have plans to make them happen!You never know where those ideas may take you—or how big they may become.In our article“Billion-Dollar Ideas”(p.22),you can learn how some side hustles became huge successes.Instagram is just one example!And speaking of good ideas,a couple of retail giants had the idea to sell products online.Now they are competing against each other for control of the e-commerce market,which grows bigger each year.Who are the two companies?Read “The War Between Two Retail Giants”(p.28)to find out.

摘要： [Abstract] This paper is aimed at analyzing an area power system. After detailedcalculationwe found it is necessary to control the transient stability of thus area powersystem. Based On to the characteristic of the area powersystema decentralied andintegrated Control mode is introduced to solve the problem. It is simple and can be easilyrealized to compare the valne of △P when fault occurs with thai of △P set.

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 该文在开发了一个超媒体组合体CAI课件的基础上，讨论了超媒体工程制图CAI的设计路线，各媒体数据的制作技巧，论述了半自动交互建模和由实体自动生成符合国标的二维视图系统。文中所述的设计思想和方法具有较强的实用性和普遍性。

摘要： 本发明涉及气垫船运动控制领域，具体涉及的是一种基于纵向速度规划的气垫船高速回转控制方法。本发明采用基于侧滑角约束的航速规划方法解决了气垫船采用传统非线性反馈控制在高速回转时的失速问题，能够保证气垫船在回转的同时实现精确的航速跟踪，提高了气垫船的机动性和作业能力，本发明在保证气垫船在高速回转过程中准确跟踪期望艏向的同时避免回转率过大导致的甩尾现象，提高了气垫船在高速回转时的可靠性和安全性。

摘要： 本发明适用于材料技术领域，提供了一种低光泽度聚氯乙烯材料及其制备方法、应用，其中，所述低光泽度聚氯乙烯材料包括以下重量份数的原料：聚氯乙烯树脂80～100份、稳定剂1～10份、增塑剂4～15份、加工助剂0.8～5份、改质剂4～15份、消光剂0～5.5份以及润滑剂0.5～5份。本发明通过稳定剂、增塑剂、加工助剂、改质剂、消光剂以及润滑剂各原料的合理配比，配合特定种类的聚氯乙烯树脂，所得到的低光泽度聚氯乙烯材料，不仅易于加工成型、且具有较为优异力学性能，且低光泽度，耐温以及成本低；另外，通过消光剂的加入可进一步降低材料光泽度的同时，进一步提高本发明聚氯乙烯材料机械力学性能，具有很好的经济效益。

摘要： 本发明涉及光纤耦合技术领域，尤其涉及一种高效率的叠阵型半导体激光器，包括激光源、光束整形组件、会聚透镜、鲍威尔棱镜组件和光纤；所述激光源发出的光束经过光束整形组件进行整形；整形后的光束经会聚透镜会聚，会聚后光束经过鲍威尔棱镜组件进行光束整形可以耦合进光纤的光束。本发明系统结构简单,便于操作,减少了操作步骤,光纤耦合效率达到84.3％。

摘要： 本申请公开了一种变频空调控制方法、装置、电子设备和介质。其中方法包括：获取空调的设置温度值，获取当前室内温度值；根据所述设置温度值、所述当前室内温度值和预设偏差阈值，确定所述变频空调的系统负荷率；获取当前室外温度值，获取所述变频空调的目标器件的信息；依据所述当前室外温度值、所述目标器件的信息以及所述系统负荷率，确认总传热温差；以达到所述总传热温差为目标，对所述变频空调的制冷系统进行控制，可以控制空调系统在不同负荷率下、不同室外温度值下运行在比较高的能效，实现空调系统节能运行。

摘要： 本发明涉及兽医生物技术领域，尤其涉及一种猪轮状病毒重组蛋白以及表达该蛋白的重组腺病毒和应用。所述所述重组蛋白由猪轮状病毒5型VP7蛋白和猪轮状病毒9型VP8蛋白连接组成，具体包括如SEQ ID NO:1所示的氨基酸序列。本发明将猪轮状病毒5型VP7蛋白和猪轮状病毒9型VP8蛋白的编码基因的基因序列构建至腺病毒表达载体中，并进行密码子优化，制备得到针对猪轮状病毒的重组腺病毒，该重组腺病毒表达的目的蛋白的结构和功能与天然状态完全一致，具有较高的安全性和免疫原性。

摘要： 本发明公开了一种改性TPEE电缆料及其制备方法，所述改性TPEE电缆料，按重量份数计，其组分包含改性TPEE100份，阻燃剂50‑100份，阻燃协效剂2‑10份，润滑剂1‑5份，抗氧剂1‑5份，助剂5‑10份。本发明提供的改性TPEE电缆料通过对TPEE接枝功能化石墨烯，以及对阻燃剂氢氧化镁进行改性，使其兼具优异的阻燃性能，力学性能，热老化性能以及加工性能，并且可回收利用，环境友好。

摘要： 本发明公开了一种路线规划方法，包括：获取N个订单的物流信息，所述物流信息包括订单地址，所述订单地址包括第一地址以及第二地址，其中，所述第一地址为目的地在直送范围内的地址，所述第二地址为目的地在直送范围外的地址，N为正整数；筛选出所述订单地址为所述第一地址的M个订单，确定配送M个订单的第一初始路线，对所述第一初始路线进行优化，得到第一优化路线，M为小于等于N的正整数；筛选出所述订单地址为所述第二地址的N‑M个订单，确定配送所述N‑M个订单的第二初始路线，对所述第二初始路线进行优化，得到第二优化路线。

摘要： 本发明公开了一种芳砜纶/四氧化三铁磁性长丝的制备方法，包括如下步骤：四氧化三铁磁性纳米颗粒制备、芳砜纶/四氧化三铁共混纺丝液制备、湿法纺丝，得到具有不同截面形状的磁性长丝。本发明可以实现芳砜纶的连续化湿法纺丝，制备过程温和可控；本发明将四氧化三铁磁性颗粒结合到芳砜纶纤维中，可以实现芳砜纶纤维的功能化，使得芳砜纶纤维具备磁性；本发明采用蛋白模板调控法制备四氧化三铁磁性颗粒，实现四氧化三铁磁性颗粒形貌及尺寸调控，同时使得纳米颗粒在纺丝液中分散均匀性；本发明制备的芳砜纶/四氧化三铁磁性长丝可用于保健、过滤、智能纺织品等领域。

摘要： 本发明属于污水处理技术领域，尤其是涉及一种污水水质预处理快速检测装置，包括检测水箱，检测水箱内壁上固定连接有第一竖板和第二竖板，第一竖板和第二竖板将检测水箱分隔成处理腔室、检测腔室和储存腔室，处理腔室内底壁上固定连接有向下延伸的梯形凸起，且梯形凸起内形成沉淀腔室，梯形凸起的下端固定连接有两根竖直的排污管，检测水箱的侧壁上固定连接有与处理腔室连通的污水进水管。优点在于：本发明可以对不同分层的污水进行水质检测，且多层之间的检测过程均为独立过程，不会出现相互之间的影响，能够对污水进行实时的检测，有助于后续的数据统计，另外采用分级式的检测方式，能够有效的对污水进行全面的检测，提高检测的质量。

摘要： 本发明公开了一种软硬件联合验证系统及方法。该系统包括：驱动软件、基于systemc模拟的存储器和异构集群；驱动软件嵌入在systemc框架中；驱动软件根据预设验证需求向异构集群发送驱动指令；存储器加载并保存待验证数据；异构集群根据驱动指令从存储器中提取待验证数据，计算得到输出数据，发送至驱动软件；驱动软件根据输出数据进行软硬件的联合验证。通过systemc模拟异构集群，驱动软件嵌入systemc框架，为驱动软件提供与硬件功能相等的模型，实现驱动软件对硬件的控制流程，协助软件前期的开发与调试，为硬件提供标准数据。解决了现有技术中软件与硬件在大多数的系统开发中分开进行，导致开发周期长的技术问题。