摘要：
Weeds cause significant production losses estimated at 25%in tropical countries and constitute main factor limiting rice production in Madagascar.This research,which was conducted at Anosibe-Ifanja(Antananarivo,Madagascar),aims to propose the most cost-effective weed management strategies for both irrigated and rainfed rice system to improve rice production.To make the management of these potential rice weeds effective,two cultural practices were tested as good agricultural and farmers’practices on two rice systems.A phytoecological study and a floristic inventory were carried out on test plots,followed by an economic profitability analysis of management strategies.In rainfed rice,a greater number of species were inventoried(42 species in 14 families)than in irrigated rice(37 species in 9 families).The most important families found in both systems were Poaceae and Cyperaceae.But in rainfed rice,two other families are also dominant:Fabaceae and Asteraceae.The study on weed management strategy showed that adoption of in-season and out-of-season tillage combined with regular weeding is effective for weed control in irrigated rice.As far as rainfed rice is concerned,improved farming practice by integrating in-season tillage with aerial ploughing combined with the use of pre-emergence herbicide pendimethalin is more cost-effective.This research has resulted in an in-depth knowledge of rice weeds and weed control strategies that are only feasible with mechanization or animal traction.
摘要：
In work features of a hydrological regime of catchments of the river of the Pripyat in climate change are considered.Researches of meteorological characteristics of the given territory show the tendency to growth,both tem-peratures of air,and precipitation,evaporation from a surface of water and ground also show the tendency to increase.That is not unequivocally re-flected in change of a course of hydrological characteristics waters objects of territory.On a part of pools of the rivers the mid-annual runoff of water in the rivers in time tends to growth,and Change of levels of subsoil waters decreases for parts-on a turn-here,as a rule,tends a course in time oppo-site to a mid-annual runoff of water in the rivers.Change of the maximal temperature of water in the rivers in time repeats the tendency of a course of a runoff of water in them,i.e.at increase in a runoff of water in the riv-ers-the maximal temperature increases,and at reduction-decreases.The increase in temperature of a superficial component of a runoff of the rivers occurs because of the general increase in temperature of air in considered territory.Silt charge waters in all territory decreases,despite of increase in quantity of atmospheric precipitation and increases or reduction of a runoff of water in the rivers.The relationship between the water runoff layer and precipitation and soil moisture has a certain time delay.The average annual water temperature over time shows a tendency to increase at almost all stations,while the change in the maximum water temperature in rivers over time has a multidirectional tendency and to a greater extent depends on the change in water depth in the river,a decrease in high water maximums and frequent thaws,etc.The studies carried out show that the preservation of moisture in thick layers of soil(0 cm-100 cm)contributes to an increase in water flow in rivers and in the modern conditions of Polesie of Ukraine this will solve a number of problems with the provision of high-quality water resources for various industries and the population.
摘要：
小朋友,你知道我們平時學(xué)的數(shù)學(xué)知識如何用英語表達(dá)嗎?下面和小靈通一起來學(xué)習(xí)一下吧!English:There were 5 Tuesdays and 4 Wednesdays in October in a year.It was()of the week on 20 October of the year.中文:某年的10月有5個星期二,4個星期三,這年的10月20日是()。
摘要：
小朋友,你知道我們平時學(xué)的數(shù)學(xué)知識如何用英語表達(dá)嗎?下面和小靈通一起來學(xué)習(xí)一下吧!English:There is 3/8 of a pizza in one box and 1/4 of a pizza in another box.How much do you have altogether?中文:一個盒子里有3/8個比薩,另一個盒子里有1/4個比薩,一共有多少比薩?
摘要：
The paper presents the construction of a steel footbridge in the People’s Park in Lublin.The initiation and development of the architectural design of an interesting and,as it eventually turned out,aesthetically pleasing footbridge is discussed.Two teams of architects and bridge engineers worked in parallel on the design.The design process of the footbridge structure is discussed along with its trial installation and on-site construction.The span of the footbridge is short,but its structure is innovative.For this reason its numerical model was developed used as a basis for an analysis of the dynamic response of the designed structure.The basic element of the acceptance procedure was constituted by a dynamic test load and an analysis of the pedestrian footbridge user comfort.Last but not least,the final section reviews the aesthetic canons of bridges and focuses on the footbridge in question in this context.A statistical measure of the aesthetic impression induced by a visit to the footbridge was applied resulting in a predictable and obvious final aesthetical assessment.
摘要：
由楊培增教授獨(dú)自完成的大型英文葡萄膜炎專著《Atlas of Uveitis:Diagnosis and Treatment》已于2020年12月由Springer出版社和人民衛(wèi)生出版社聯(lián)合出版。此書是目前國際上單人完成的最大葡萄膜炎專著,共860頁、3000余張患者圖片,約合中文l70萬字。此書分為Overview、Diagnosis of Uveitis、Treatment of Uveitis.Uveitisentities,Scleritis and Episcleritis四大部分。
摘要：
大型隊(duì)列已經(jīng)成為生物醫(yī)學(xué)研究重要的科研基礎(chǔ)設(shè)施和衛(wèi)生決策支撐平臺,其意義不斷凸顯,多國已布局大型隊(duì)列建設(shè)。本文以美國All of Us隊(duì)列項(xiàng)目為例,從建設(shè)與管理視角出發(fā),深入剖析其前期規(guī)劃設(shè)計、組織模式、管理方案、運(yùn)行機(jī)制以及資源采集、共享方案等要素,總結(jié)了其建設(shè)經(jīng)驗(yàn)與特點(diǎn),以期為大型隊(duì)列建設(shè)與管理提供借鑒。美國All of Us隊(duì)列項(xiàng)目建設(shè)與管理的主要經(jīng)驗(yàn)和啟示包括:1)頂層設(shè)計完善,前期經(jīng)過充分磋商與科學(xué)規(guī)劃,制定了科學(xué)可行的大型隊(duì)列建設(shè)實(shí)施方案;2)政府主導(dǎo)建設(shè),全國一體化組織和管理,充分調(diào)動全國優(yōu)勢力量共同推動隊(duì)列建設(shè)和運(yùn)行;3)采用統(tǒng)一的規(guī)范和標(biāo)準(zhǔn)進(jìn)行隊(duì)列建設(shè)和資源管理,保證隊(duì)列資源的標(biāo)準(zhǔn)化、規(guī)范化和系統(tǒng)化;4)采用多元化招募方式確保全民覆蓋,并鼓勵參與者參與隊(duì)列建設(shè)與監(jiān)督工作,保證隊(duì)列研究人群的多樣性和高隨訪率;5)對數(shù)據(jù)資源進(jìn)行集中存儲與管理,并依據(jù)可開放程度進(jìn)行分層級存儲和訪問,在保障參與者數(shù)據(jù)安全的前提下實(shí)現(xiàn)開放共享。
摘要：
1.Two squares with a side length of 5 cm form a rectangle.What is the perimeter of the rectangle?2.When a 45 cm long wire is enclosed into a square with a side length of 9 cm,what is the length of the wire left?
摘要：
Do you want to be a good member of your group?Your answer must be"Yes",I believe.But how can you be a good member of your group?你想做好團(tuán)隊(duì)中的一員嗎?我相信你的回答一定是"是的"。但是,如何才能做好團(tuán)隊(duì)中的一員呢?
摘要：
本發(fā)明涉及獸醫(yī)生物技術(shù)領(lǐng)域，尤其涉及一種豬輪狀病毒重組蛋白以及表達(dá)該蛋白的重組腺病毒和應(yīng)用。所述所述重組蛋白由豬輪狀病毒5型VP7蛋白和豬輪狀病毒9型VP8蛋白連接組成，具體包括如SEQ ID NO:1所示的氨基酸序列。本發(fā)明將豬輪狀病毒5型VP7蛋白和豬輪狀病毒9型VP8蛋白的編碼基因的基因序列構(gòu)建至腺病毒表達(dá)載體中，并進(jìn)行密碼子優(yōu)化，制備得到針對豬輪狀病毒的重組腺病毒，該重組腺病毒表達(dá)的目的蛋白的結(jié)構(gòu)和功能與天然狀態(tài)完全一致，具有較高的安全性和免疫原性。
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