生物擴大作用 的英文怎麼說
中文拼音 [shēngwùkuòdàzuòyòng]
生物擴大作用
英文
biological magnify- 生 : Ⅰ動詞1 (生育; 生殖) give birth to; bear 2 (出生) be born 3 (生長) grow 4 (生存; 活) live;...
- 物 : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
- 擴 : 動詞(擴大) expand; enlarge; extend
- 用 : Ⅰ動詞1 (使用) use; employ; apply 2 (多用於否定: 需要) need 3 (敬辭: 吃; 喝) eat; drink Ⅱ名...
- 生物 : living things; living beings; organisms; bios (pl bioi bioses); biont; thing; life生物材料 biol...
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The single function of biological reaction filler had been applied widely, which merely supplied the reaction place and the large amounts of microbe for biological reactor, though it had the large specific area and the surface character suitable for conglutinating microbe
目前應用的生物反應填料作用單一,只是通過較大的比表面積和宜於生物附著的表面性質,為生物反應裝置提供較高的生物量及為生物反應提供場所,但不能為生物反應裝置創造良好的傳質擴散條件。Results indicated that rain eluviation was one of the means by which p. multisectum released allelochemicals, the allelopathy of the leaching might play an important role in enhancing the competitive ability of the species
由此表明,雨水淋溶是多裂駱駝蓬向環境釋放化感物質的途徑之一,化感作用在增強其生態競爭力和擴大種群中起著重要的作用。According to the markov approximation under a long haul condition, we get the inter - correlation function, log - amplitude and phase covariance function. the thesis puts much emphasis on three phenomenon of the laser under the effects of turbulence, i. e., intensity fluctuation ( atmosphere glistening ), beam floating and extension, phase fluctuation
重點介紹湍流作用下的激光的三種物理現象及其產生機理,即強度起伏(大氣閃爍) ,光束漂移和擴展,相位起伏和到達角起伏。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象,考慮滲流與傳熱的相互作用,採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明,高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域,增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降,熱滲透深度擴大,熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域,孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用Aimed at developing a set of methods efficient in inducing the hairy roots with agrobacterium rhizogenes from trichosanthes bracteata voigt to meet needs for hairy roots for bioreactor culture research and application ; and also in order to investigate the roles of explants, agrobacterium rhizogenes, affecting factors and their magnitude and the underlying mechanism in the transformation, therefore to determine the optimum explants, pre - culture time, tested strain concentration, infection time, co - culture time, affecting factors and their effects working together and to obtain the optimum transforming condition by performing orthogonal test, this project was launched. with cotyledons and stems from trichosanthes bracteata voigt plantlets as explants, agrobacterium rhizogenes r1601 and r1000 as infection agents, transformation was performed using different methods and under various circumstances
為了建立一種有效的誘導大苞栝樓發根的方法及其發根培養體系,以適合於發根生物反應器擴大培養研究和應用基礎的需要;本研究對誘導發根的外植體在發根農桿菌和環境因子等影響作用下進行發根的誘發及其可能的機理進行探討,從而找出用於發根誘導和培養的最佳外植體、預培養時間、發根農桿菌濃度、感染時間和共培養時間、誘導條件,並通過正交試驗得出優化的誘導條件。This overview highlights selected algorithmic solver code advances in the used simulation tools, the use and the modelling of new materials for crash energy absorption, concept car design techniques, massive parallel programming and performance gains, side impact barrier modelling, mechanical occupant surrogate modelling ( dummies ), biomechanical models of human parts, as well as extensions of crash simulation techniques to the simulation of drop tests for appliances, shock absorption of a mars lander, etc
內容包括作為模擬手段的計算程序的最新進展,新的緩沖材料的應用和模擬,大規模并行程序的編制和性能的增加,側撞障礙物模擬,乘客模型(假人) ,生物人體部件模型,碰撞模擬技術擴展應用到設備跌落試驗和火星著陸艙的緩沖等。Therefore, the administration continues to maintain a system of dual - use controls, including on china, that focuses on evaluating the appropriateness of the proposed export to the civil needs of the end - user and the risk of diversion. the commerce department under the ear maintains dual - use controls that include china in the following areas of proliferation and military concern ; national security ( ns ), nuclear nonproliferation ( np ), missile technology ( mt ), and chemical and biological weapons ( cb )
美國商務部根據《出口管理條例》 ( ear )在以下涉及擴散和軍事問題的領域對兩用品實施管制,其中包括對中國;國家安全( ns ) 、核不擴散( np ) 、導彈技術( mt )和化學及生物武器( cb ) 。涉及國家安全的管制特別提出廣泛審議的政策,如向中國的某項出口對電子和反潛艇戰爭、情報收集、力量推進或空中優勢有「直接或重大」作用,將拒絕核準。The sxj type of clastic machine was specially designed and built for machining metal pieces. the characteristics, working principle, technical indices, production line and its application were introduced. the design provides a simple and convenient method for extending the working range of waste metal filling and shellroof materials
介紹了sxj型碎屑機的設計製造的特點、工作原理、技術指標、碎屑生產線及其應用;為了擴大廢鋼屑,薄殼物料的加工范圍,提供了簡單、易行的方法。Various social activities and tours for participants including accompanying persons will be organized during the congress, such as a tour to the great wall, the ming tombs and other enjoyable entertainment, post - congress tours will also be arranged. hotel and accommodation a block of rooms in the hotel kun - lun, the great wall sheraton hotel, the continental grand hotel, the cadic hotel, the hua du hotel, etcwill be reserved for participants
福州綠谷生物藥業技術研究所林樹錢研究員作了題為"靈芝菌種的dna指紋分析"的專題報告,該所應用基因組dna的隨機擴增多態性rapd技術和核糖體rdna5 . 8s its區段的限制性片斷長度多態性rflp技術,對中國大陸30個靈芝菌種dna進行dna指紋分析。Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題,尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的,但另外一些則有著嚴重的後果,會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式,概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑,來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結,這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化(瓶頸效應及種群擴張) .最後,我們以歐洲櫟癭蜂(膜翅目,癭蜂科,癭蜂族)一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上,多態的等位酶位點上等位基因頻率的數據表明: 1 )遺傳多樣性沿入侵路線呈不斷下降的趨勢,支持了冰河期避難所作為遺傳多樣性中心的作用; 2 )入侵地區的種群與該物種原產地的種群相比,遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映In this passage, author has studied the quota of irrigation that can make water used economically for various plants, if the irrigation quota can be lowered from 6795 m3 / a to 4500 m3 / a during the processes of irrigation, there will be a saving water amount of 3. 386million m3 / a, in shiyang river basin. there is no doubt that we can open the second source of river water that can provide the possibility of transporting 300 million m3 / a water amount to lower reaches of the river. in this paper, there are some analysis and prospects for the future situation of supply and demand of water resources in 2010
民勤水資源減少的主要原因是人為因素,如全流域人口增加、中上游耕地面積擴大,用水量增加,造成灌區重心上移;沒有樹立可持續發展觀,在經濟中搞短期行為;對石羊河流入民勤水量不斷減少、地表水、地下水轉化活躍、生態用水問題突出等方面進行了分析論證;對目前開發利用現狀、供需狀況進行了較為詳細的計算和評價;通過對各種農作物節水灌溉定額的研究,若從現狀灌溉定額6795m ~ 3 ha降低到4500m ~ 3 ha實施灌溉,石羊河流域將節水3 . 3867億m ~ 3 ,這無疑于開辟了第二水源,提供了向下游調水3億m ~ 3的可能性。In keeping with the biosphere reserve model, it will promote greater community involvement and intergovernmental coordination in managing nature reserves
按照生物圈保護區模型,本項目還將進一步擴大社區的參與以及加強在自然保護區管理的過程中政府間的協調作用。The whole dissertation can be divided into 9 chapters, which are mainly engaged on the comparative theories of the common balance and the partial balance, and the methodology of the demonstration and criterion economics to do the analysis and res earch on the purpose of making relatively thorough and deep assessment on the policy - making and related improvement suggestions on such areas as the implement performance of the agriculture policies, the requirement structure of agriculture, the structure of employment, the basic elements and arrangement of agriculture production, the sustainable development of agriculture and the agriculture internationalization etc. the basic innovative points of the dissertation are as follows : ( 1 ) to establish a systematic framework for the research on the policies of agriculture industry and the structure of agriculture industry ; the framework for grand agriculture industry structure ; the framework of subject relationship in the agriculture socialized service system ; the circulation framework of sustainable development for agriculture ; the model framework for corporation development for agriculture institution ; ( 2 ) to expand the external scope of the concept of agriculture ; ( 3 ) to put forward the ideas of the corporation orientation by restructuring and innovating the present agriculture operational institution ; ( 4 ) to raise the viewpoints to set up the quality standard system for agriculture produce and to initiate the same system of the internal and external trade ; ( 5 ) to offer the suggestions on guiding the development of the township and private enterprises through the industry policies ; ( 6 ) to raise the innovative viewpoint by way of the systematic analysis on agriculture and the employment structure of the countryside, the district arrangement, technological innovation and the marketing system of agriculture produce ; ( 7 ) to put forward the comprehensive thinking way to broaden the logistics services for agriculture produce ; ( 8 ) to raise the new idea of the agriculture supporting system and the policy suggestions on expanding the areas for the government to support agriculture industry, reorganization of agriculture insurance system and aid to the weak masses of the countryside
本課題是在國家農業產業政策不斷完善和產業經濟學科科學發展的背景下,從農業產業政策的實踐出發,從大農業產業結構、組織、技術、資金、勞動力、土地等資源配置以及區域布局、國內外關聯等角度,以農業產業政策與農業發展的互動關系為切入點,提出了農業產業政策調整取向,初步形成和發展了政策理論。全文共分9章,主要運用一般均衡和局部均衡比較等理論,實證、規范經濟學研究等方法進行探討,對農業產業政策實施績效、農村需求結構、就業結構、農業生產要素和布局、農業可持續發展、農業國際化等命題以及對策建議作了比較全面深入的評析。本課題研究主要有以下創新觀點:初步搭建了農業產業政策和結構理論框架,設計了政策和結構體系圖;延伸了「農業」概念外延,提出了「大農業」的構想;提出了農業產業經營組織再造和創新的公司化發展方向,設置了農業產業化、公司化發展模式圖和產業化公司模型圖;設計了農業可持續發展良性循環圖和農業資金投入效益模型圖;提出了建立農產品質量標準體系、推行內外貿一體制的觀點;建立了農業保障體系參照圖,建議通過產業政策引導鄉鎮、私營企業和「三資」企業發展;剖析農村勞動力就業結構、區域布局、科技創新、農產品市場體系;提出了加大農產品物流配送的整體思路;提出了農業支撐體系新觀念及擴大政府支農范圍、重構農業保險體系、扶持弱勢群體的政策建議。The network carbide and acicular martensites that existed in the microstructure of the root grooves of the spline due to improper carburating and quenching process of the shafts, led to the initiation and propagation of the intergranular microcracks and were the main reason that caused the early fracture of the shafts
由於滲碳淬火工藝不當,在二軸花鍵槽根部的組織中產生了網狀破化物和粗大的針狀馬氏體,在外力作用下形成沿晶顯微裂紋並擴展,是導致二軸疲勞斷裂的主要原因。Diagenesis not only can change mineral composition, fabric component, and texture, etc., but more important it can change the reservoir capability greatly, that is, it can build up, or reduce, or enlarge original pores, and even form a series of diagenetic crack. those secondary pores and cracks are important to improve reservoir capability, especially for carbonate
成巖作用不僅使巖石或沉積物的礦物成分結構組分構造等發生程度不同的變化,更重要的是使原巖的儲集性能發生很大的變化,即對原生孔隙或堵塞或殘留或擴大,而且還可產生一系列的成巖孔縫次生孔縫,這些次生孔縫對巖石儲集性的良化,尤其是對碳酸鹽巖是至關重要的。In this paper a numerical method for equations of transport and biodegradation in the fractured media is discussed. because the equations consist of terms related to advection, diffusion, biochemical as well as the term of exchange betwen the fracture and the porous media, it is very difficult to find their solution. in order to find more efficient method for solving these equations, several numerical methods for the equations without biochemical terms are discussed first. the numerical results show that the cubic spline method can be used to solve advection flow dominated problem which often occurred in the fractured media. then, the equation with both advection - diffusion term and biochemical term are discussed. the splitting - operator is used to decouple the advection and diffusion terms with biochemical term in the equations. the way to determine the smaller time step for solving fast biochemical terms is introduced through comparing the order of characteristic time of biochemical term with that advection ( diffusion ) term. numerical simulation results show that good agreement between analytical solution and experiment result is attained
本文討論了含裂隙介質地下水污染物輸運與生物降解非線性方程組數值求解方法.方程含有對流項、擴散項、生長、死亡、吸附、解吸、趨化和孔隙與裂隙介質界面間的交換項的非線性偶合,使演算法十分困難.本文討論了無生化過程時的幾種求解方法,數值結果表明:用三次迎風插值法對常見的對流項占優勢,且場變量有較大梯度的問題較適用.在討論有生化反應過程時,利用對流項與生化反應項的特徵時間量級估算,給出了求生化過程作用子步的時間步長估算辦法.用上述方法所得到的模擬結果與解析解、無化學反應和有化學反應的實測值對比,吻合很好The study on the function and mechanism of phrip1 is important for clarifying how the cell plate and cell wall form in plants. in this study, full length of phrip1 is amplified by pcr and ligated into pks plasmid, then the bait plasmid, peg202 - phrip1, is constructed. the inseret gene are sure to be translated into the right fusion protein through its sequence. in the yeast two - hybrid system, the bait plasmid ( peg202 - phrip1 ) and a reporter plasmid ( psh18 - 34 ) are introduced into the yeast ( egy48 ) by co - transformation. then cdna library ( which is in pjg4 - 5 ) is screened and two genes are obtained. the two insert gene fragments are sequenced. one of them is plastocyanin, the other is putative photosystem i reaction center subunit ii precursor, both of them are the necessary components of photosynthetic chain
成膜素相關蛋白1 ( phrip1 )是一個含608個氨基酸的蛋白質,它對于植物胞質分裂中細胞板的形成起到了十分重要的作用。研究phrip1的功能和機制,對在分子水平上闡明植物細胞板以及細胞壁形成的機理具有重大的生物學意義。在本實驗中,根據phrip1的序列設計引物對其進行pcr擴增,得到該基因后將其連接到了pks質粒上,並進一步構建成了誘餌質粒peg202 - phrip1 。The development of science and technology journal is limited obviously by its circumstance such as region, contribution, reader, etc. under the influence of these conditions, the confined mind and the unenterprise attitude is produced by editors. thus, the weak link of developing science and technology journal is showed conspicuously in blazing new trails of content, expanding circulation, and founding famous brand. for expanding the developing space of science and technology journal, some effective measures should be adopted. first, the content and quality of journal should be highly valued. the constantly bring forth new ideas in the content should be promoted by publishing original theses, supporting new subject, introducing new direction, creating characteristic column, etc. by means of these methods, the aim of spreading original achievement, starting new fields of scientific research can be achieved. so academic standard and effect of the journal can be improved. second, the operate mechanism of journal as a processing workshop should be changed. the varied methods should be adopted for selling, circulating and information feedback of journal. third, the reputation of the journal should be safeguarded by correcting ideology of publish. the resources of the journal should be rationally used and developed. it can promote the science and technology journal growing continued
科技期刊的發展受到地域、稿源、讀者等環境因素的制約.受其影響,編輯易產生封閉、不思進取的心態,使科技期刊在內容創新、擴大流通、創立品牌等方面突現出薄弱環節.為拓展科技期刊的發展空間,首先應抓內容和質量,通過刊發創新論文、扶持創新學科、引進創新方向、創辦特色欄目促進科技期刊內容創新,以傳播創新成果,開辟創新領域,提高期刊的學術水平,擴大影響力;其次,應改變純粹的生產單位、加工車間的運作機制,採用多種局道、多種方法加強科技期刊出版后的營銷、流通及信息反饋等工作,走出重生產、輕開發、輕流通的誤區,擴大影響面;第三,應端正出版理念,維護刊物的聲譽,合理利用、充分拓展科技期刊的品牌資源,促進科技期刊的可持續發展The transfer of the carrier in photoconductor is anisotropy owing to the column structure of the film is anisotropy. on the basis of the new concept suggested in this paper, the maximum diffusion length in the lateral direction of the photo - carrier in the photoconductor ( which is related to the resolution of lclv directly ) as function of conductivities of both in lateral and normal directions in the film can be obtained as the expression as following. the nc - si / a - si : h photoconductor of lclv deposited and crystallized at low temperature of exactly 250 c stack column structure by al inducing a - si : h
本文根據柱狀結構存在各向異性的特點,並根據半導體物理知識,推出光導層光生載流子橫向最大擴散長度(該擴散長度與液晶光閥光導層解析度直接相關)與薄膜橫向和縱向電導率關系的表達式為:由於a - si : h在al金屬的誘導作用下在不高於250的溫度下即開始晶化,本文對用金屬al誘導非晶硅晶化制備的nc - si a - si : h薄膜進行研究。Biosorption, has emerged as the most promising process because of its high efficiency and favorable economics. in this study, microorganisms with high ability of cadmium resistance and accumulation were isolated and screened, then characteristics and mechanisms of cadmium removal by selected strain were studied
本實驗進行了抗鎘和富集鎘菌株的篩選,並對其抗性和富集特性及機製作了系統的研究,為擴大微生物在鎘污染治理中的應用范圍奠定基礎。分享友人