短衰期的 的英文怎麼說
中文拼音 [duǎnshuāiqīde]
短衰期的
英文
short decayed-
So in fact, if they senesce just a tiny tiny bit over time - - that is, if their half - life gets shorter, very very slowly - - we wouldn ' t actually be able to tell that this was happening in the time that we took our measurements, because the acceleration in the rate of atoms decaying ( relative, of course, to the number that had not decayed already, which is always decreasing ) would be too tiny to be statistically detectable
所以在事實上,如果它們隨時間衰老得只那麼一點點, ?就是說,如果它們的半衰期縮短得非常慢?那麼我們實際上不可能知道,在我們測量期間發生過衰減,因為原子衰減的速率加速得太小,統計學上檢測不出(當然,是相對于不曾衰減的數目而言,不曾衰減的原子數目總是在減少) 。Although thoron is one of isotopes of radon, and the characteristics of thoron and thoron progenies are similar to those of radon and radon progenies, because the half life of thoron is shorter ( 55. 6s ), the concentrations of thoron and thoron daughters in environment are lower, people usually think that the effective dose from thoron and its progenies can be eliminated, and the measurements of thoron progenies concentrations are difficulty, a little research work on the dose evaluation of thoron and thoron progenies in environment has been done
雖然(氣土)是氡的同位素,它及其子體的特性也與氡及其子體的相似,但由於(氣土)的半衰期短( 55 6s ) ,環境中(氣土)濃度較低, (氣土)及其子體濃度的測量較難,人們一般認為(氣土)及其子體所致劑量可以忽略,所以對環境中(氣土)及其子體劑量評價研究很少。The writer studies the developed steps of real estate industry in the above - mentioned period and describes its generation mechanism, characteristics and cause of business cycle fluctuation of real estate industry in the period of our economy system shift. it is necessary to point out that policy cycle fluctuation should be a fundamental cause on business cycle fluctuation of real estate industry in china. writer here jumps at the conclusion that the recovery phase and depression phase of business cycle in our real estate industry should be later than the expansion phase and decline phase
該部分內容由第3章構成,即從房地產經濟周期波動的一般研究轉到對我國房地產經濟周期波動進行分析,從總體上看,改革開放以來我國房地產業的真正形成與發展只有20年的歷史,通過對這一短時期中國房地產業發展的探討,指明轉軌時期中國房地產經濟周期波動的一些主要特點,同時指出我國房地產經濟周期波動形成機制與原因,當前我國經濟轉軌時期,政策周期波動是房地產經濟周期波動的根本原因,並從理論角度分析了房地產經濟周期波動與宏觀經濟周期波動在各個階段間的相互關系,得出我國房地產經濟周期相對于宏觀經濟周期波動來說在復甦期和蕭條期滯后,但高漲期和衰退期卻先行的結論。Where, i is net fixed capital formation, v is the value added of industries, i is the number of industrial, t is the year, t is the flexibility changes of fixed capital formation on the industry growth, denoted the level of flexibility of change capabilities on increasing the investment in the optimistic prospective industries and reducing the investment in the pessimistic prospective industries
這表明經濟發展過程中存在對于發展企業的「投資不足」和對于衰退企業的「過度投資」現象,並且我國在資本配置過程中存在顯著的「短期現象」 。這些現象主要都是由我國金融體制對國有經濟的金融支持偏好和國有經濟對這種支持的剛性依賴這個原因造成的。This is what gerontologists have done : they have defined the term " senescence " to mean a positive correlation between age and risk of death in the coming short time period ( typically a year for humans )
這是老年學家已經做的事情:他們已經把「衰老」這一術語定義為年齡與即將到來的短時期(在典型情況下,人類為一年)的死亡風險正相關。Rubber tree ( hevea brasiliensis ) is an important economic woody - crop in tropical areas. its latex is the unique source of crude rubber used in current industry. because of its special and important use, the rubber tree has been extensively planted in tropical areas. increase production is always the main target in rubber tree cultivation. since the ethrel was applied in increasing latex production in 1968 for the first time as a chemical stimulant, not only the latex production had been increased largely, but also a new set of rubber tapping system had been established, leading to a series of economic benefit. owing to ethrel " s extensive application, its side effects had been found more and more obviously, such as tapping dry, speeding up senescence, shortening the life span of rubber tree etc. in order to overcome the side effects and increase production more availably, for a long time, people had carried out lots of research work on cell level, membrane level, physiology and biochemistry of laticifer contents. but the mech anism why ethrel increased latex production was not yet understood completely. this study had cloned the ethylene receptor gene ( efrl ) from rubber tree, and researched the relationship between etrl expression in laticifers and ethrel stimulation on transcription level and protein translation level. the results were as follows : 1
但是,由於乙烯利應用的普及,乙烯利刺激割膠引起橡膠樹發生死皮病及加速膠樹衰老,縮短膠樹壽命等副作用也越來越明顯。為了克服這些副作用,使乙烯利能更有效地刺激增產,長期以來,人們在細胞水平、膜水平和乳管細胞內含物的生理生化層面上進行了大量的研究,但仍未完全了解乙烯對膠樹的作用機制。本研究從分子水平入手,克隆橡膠樹的乙烯受體基因( etr1 ) ,並在轉錄水平和蛋白質翻譯水平上研究etr1基因在乳管細胞中的表達及與乙烯刺激的關系,取得了以下結果: 1The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity. the bigger the seeds of the species and the earlier or later the seeds of the species matured, the higher the proportion of the seed rain damaged by animals. the quantitative variation of seed rain, active seed rain and seed bank did not take place at the same time. at early time, the number of seed banks of castanopsis fargesii, lithocarpus glabra, quercus myrsinrefolia, castanopsis plasyacantha, cinamomum subavenium. which own more active seed rain increased by geomitric series. the seed banks of castanopsis orthacantha and schima argentea were small, only survived a short time, and did not sprout next year. the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals, dying speed of seeds and their resistance to pathogens and adverse circumstances, and the state of seed germination
對重慶四面山常綠闊葉林建群種種子雨、種子庫的研究表明,建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種,其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的數量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等,其種子庫密度在早期以近幾何級數的方式增長,元江栲、銀木荷種子庫小,存在時間短,翌年無一年生萌發苗;種子庫數量動態、消減率動態決定於種子被取食的強度、種子衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition
本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論,然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼,並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬,分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下,可以獲得較短的捕獲時間和較大的捕獲概率。Compared with the traditional curve - based method, this method can calculate the currents with high accuracy and little user effort. it can automatically calculate the periodic components of varying short circuit currents at anytime, and the aperiodic components of the symmetric short circuit currents
該計算機演算法大大減輕了傳統運算曲線演算法的工作量,且具有較高的準確度,能夠自動完成系統短路時任意時刻電流衰減周期分量的求解,及對稱短路時短路電流非周期分量的求解。In addition, the pith of root and stem is flourishing for prosperous growth period and declining period, the vascular tissue storing the nutrient and providing the nourishment for the biennial plant in next year from abnormal secondary growth is developing in pith, unusual structure eg. epidermis and vice - epidermis, bubble form cell, short pipe numerators and wreath grid types leaf etc. in each organ of pugionium comutum ( l. ) gaertn. had been formed to adapt to dry environment, so the characteristics on appearance and anatomies in pugionium cornutum ( l ) gaertn. has closely of relation with its anti - drought and its adapting to desert environment
此外,葉片旺盛生長期、衰退期根莖具發達的髓,髓內有異常次生生長形成的維管組織,貯藏養分,為沙芥次年形成二年生植株提供營養,沙芥各器官在解剖結構方面都形成了特化結構如具表皮及副表皮、泡狀細胞、短的導管分子及環柵型葉等以適應乾旱的環境,因此沙芥各器官的形態及解剖特點與其抗旱、適應沙漠環境有密切的關系。They found two events showing the shortening of pulsating cycle and decaying of radiations intensity. the signatures matched theories of what scientists would predict to see. when matter is falling so close to the event horizon, it will be circling the black hole with increasing speed and its light will rapidly dim as it is stretched by gravity to ever - longer wavelengths
研究人員分析了極大量來自緻密天體天鵝座xr - 1的紫外線輻射,發現其中兩組數據顯示,輻射脈沖的周期隨時間縮短,而其強度則隨時間衰減至消失,這現象與一些物質在接近黑洞視界時繞著黑洞急促旋轉,放出的輻射因為重力紅移而衰減的情況相符。So far, there are many studies on growth hormone ( gh ) replacement in aging with some relatively short - term achievements showing improvement of the symptoms
目前已有許多關于生長激素替代治療抗衰老的研究,一些相對較短期的研究顯示出其改善了衰老的相關癥狀。The long period attenuation relationship of acceleration response spectrum is developed using this database. the short - period attenuation equation is developed by using the analog strong motion records of western north america. by connecting the short period and the long period attenuation relationships together, the wide period ( 7 " = 0. 04 - 20sec ) attenuation relationships for horizontal acceleration response spectrum of western north america are obtained
與用模擬式強震儀記錄所得出的美國西部地區短周期( t = 0 . 04s - 4s )加速度反應譜衰減關系結合,得出了美國西部地區水平向基巖寬周期( t = 0 . 04 - 20s )加速度反應譜衰減關系。Prostate ( pgi2 ) is stronger blood vessels and the expansion of the role of platelet inhibition, but because of the short half - life, performance instability, clinical efficacy not sure
前列腺環素( pgi2 )具有更強的擴張血管和抑制血小板作用,但因其半衰期短,性能不穩定,臨床應用療效不肯定。The rapid deterioration of the external environment now threatens to prolong the cyclical downturn in hong kong, engulfing the vigorous, but all too brief, resurgence last year
外圍環境迅速惡化,可能會令香港面對的周期性衰退持續一段更長的時間,令去年出現的強勁但短暫的復甦消失於無形。The high estimate is based on past trends with only short term adjustment in response to the current economic down turn
高增長預測是按過往經濟增長的趨勢,並因應現時的經濟衰退情況經進行短期調整后而作出的評估。分享友人