輻照變性 的英文怎麼說
中文拼音 [fúzhàobiànxìng]
輻照變性
英文
modification by irradiation-
Variational analysis on therm - elastical stresses of plane strain problem of thermal barrier coating structure in laser radiate
激光輻照熱障塗層中平面應變問題的熱彈性變分分析The degradation of the electrical characteristics in sic pn junctions irradiated by neutron is attributed to the recombination centers and the electric field effect on the thermal emission of traps within the depletion region. the relationship of the ideality factor to the applied voltage is theoretically studied
提出了中子輻照下sicpn結電特性退化的新的理論, pn結耗盡區中的輻照陷階在耗盡區電場的作用下熱發射效應得到加強,從而導致pn結正偏和反偏時的復合電流和產生電流的改變。The activities of nr increased fistly and then decreased after uv - b treatment. the gdh activities of treated plants were lower than those of control plants during the whole experiment. enhanced uv - b radiation reduced the contents of no3 - - n in spirodela polyhiza
Uv - b輻射處理后硝酸還原酶( nr )活性呈先升后降的變化趨勢,谷氨酸脫氫酶( gdh )活性在整個處理期間均低於對照; uv - b輻射導致硝態氮含量降低。The x - ray is isotropic measured by pin detector, the hard x - ray ( > 30kev ) production become smaller with the reduction of the incident laser intensity, when the intensity is lower than 101 ? w / cm2, there is no hard x - ray generation
這是第一次實驗測量紫外飛秒激光輻照固體靶產生的硬x -射線連續譜,為研究把紫外激光應用於慣性約束聚變「快點火」的可能性提供了實驗數據。By using arabidopsis thaliana as material, the study had been focused on the ion beam implantation - induced effects and the changes of the configuration. with the rapd method and the analysis of the pod, the mechanism in molecular biology and physiology were stated
以擬南芥為對象做離子注入的物理誘變,觀測記載了離子束注入后供試材料的形態性狀變化,利用rapd方法探討了引起形態性狀誘變的分子機理,結合同工酶分析結果,分析了離子束輻照引起的生理誘變效應。It calculates the effects during each time step of winds carrying along the various atmospheric properties and of the processes of evaporation, rainfall, surface friction, infrared cooling and solar heating that occur in the area of interest
在每個時步里,模式計算的作用包括:各種隨著風改變的大氣性質、蒸發過程、降水、表面摩擦以及在重要地區的長波輻射冷卻與日照加熱。The variation of optical spectrum of a special kind of optical fiber has been reported after - radiation, which may be used as a new kind of optical fiber filter
摘要報導了2種結構的大芯徑石英光纖在輻照后的光譜特性的變化,發現摻雜光纖在輻照后具有光學濾波作用,由此可利用這種特性研製一種新型的光纖濾波器。The band was previously associated with f - type color centers and v - type color centers, as analyzed in x - ray irradiated ysz sample. however, the absorption band observed in our experiments has a shift towards the longer wavelength ( red shift ) as comparing with that in the x - ray or neutron irradiated ysz spectra. this shift may mainly due to large local distortions near the f - type centers and the v - type centers and the presence of multiple color centers
本文通過光吸收、光熒光、 tem 、 xps測試及trim96計算分別研究了不同注量xe ~ +注入ysz前後光學性能和缺陷形態變化,以及ni ~ +注入對不同摻雜單晶al _ 2o _ 3結構和光學性能的影響,得到以下結果: ( 1 ) ysz注量達到10 ~ ( 16 ) cm ~ ( - 2 )時,開始出現由f型和v型色心重疊而產生的吸收帶,與x射線、中子輻照相比,重離子輻照產生了更為復雜的缺陷復合體而導致吸收峰紅移。In order to reveal the mechanisms of extreme radioresistance and dna repair in deinococcus radiodurans, we examined proteome changes in a wild type strain following y - irradiation using 2 - dimensional polyacrylamide gel electrophoresis and silver staining
為了研究耐輻射球菌極強的輻射抗性與dna修復機理,我們應用雙向電泳結合銀染的方法考察了野生型菌株kd8301在射線照射前後細胞體內總蛋白組的變化情況。One is about of temperature - dependence of luminescence of eu3 + and tb3 + doped in oxide glass and nanocrystalline y2o3 ; the other is about of light - induced luminescent and structural change in nanocrystalline y2o3 : tb. the creative works are as follows : ( 1 ) euand tb doped nanocrystalline y2o3 with different sizes were prepared by combustion synthesis. dependences of particle size, crystallinity and fluorescence characteristic on ratio of gly / y ( no3 ) 3 and annealing temperature were studied
本文以變溫與光輻照為實驗方法研究了eu與tb摻雜y _ 2o _ 3納米晶及氧化物玻璃中發光性質隨溫度的變化關系和光誘導y _ 2o _ 3 : tb納米晶發光性質及結構的改變過程,得到如下創新性研究成果: ( 1 )用燃燒法制備了稀土摻雜y _ 2o _ 3納米晶,研究了甘氨酸與硝酸釔的反應比例( g n ) 、退火條件對稀土摻雜y _ 2o _ 3納米晶顆粒尺寸、結晶狀況及發光特性的影響。Not only the uniformity of laser energy on the target surface, but also the high uniformity of laser intensity at any time is needed for icf ( inertial confinement fusion ), so power balance is the important stage of the precision upgraded modification to multi - beams high power laser driver
慣性約束核聚變不僅對輻照靶面的激光能量均衡性而且對任意時刻的功率均衡性都有很高的要求,因此功率平衡是多路激光驅動器精密化升級改造的重要環節。Lastly, the rapd method make the effects of the ion beam irradiation induced the arabidopsis thaliana dna clear. and in the molecule level explain the results of the different doses act on the arabidopsis thaliana dna and the molecule mechanisms
利用rapd方法揭示了離子注入對擬南芥dna多態性的影響,並在分子水平上揭示了輻照的不同劑量對擬南芥遺傳多態性的影響,闡明了離子誘變的分子機制。This topic focused on the radiation effect on the uhmwpe fiber with electron beam ( eb ) radiation. and instron, sem, atr - ir, xps, epr, xrd et al were used to characterize the structure and properties of uhmwpe fiber before and after radiation treatmentand on this condition we probed into the grafting modification with eb radiation technology
本課題研究uhmwpe纖維的電子束輻照效應,運用電子強力機、掃描電鏡( sem ) 、全反射紅外( atr ? ir )光譜、 x射線光電子能譜( xps ) 、電子順磁共振儀( epr ) 、 x射線衍射儀( xrd ) 、接觸角和交聯度測定等方法對uhmwpe纖維在電子束輻照作用下的主要結構與性能變化規律進行了表徵和分析,在此基礎上對運用電子束輻照技術進行uhmwpe纖維的表面接枝改性進行了探討。Standard lamp and diffusers are very important calibration elements, in chapter three, first uv and vuv radiometric standard for calibration are introduced. then the fabrication and characteristics of baso4 diffuser and alminium diffuser are researched, the baso4 diffuser ' s hemispheric reflectance and bi - directional reflectance distribution function were measured and compared with lambtian surface, and the deviation from that of lambtian surface is given. in the experiment, al diffuser ' s brdf is researched, obtain the change of spectral characteristic of al diffuser, compare al diffuser ' s brdf before and after coated with al + mgf2, and different al diffusers with different surface roughness
鋁漫反射板作為一個漫反射光學元件安裝在太陽紫外光譜監視器的入射狹縫前,太陽紫外光譜監視器在軌測量時,太陽輻射入射到鋁漫反射板后進入入射狹縫,光譜輻照度的角度是變化的,本章測量了鋁漫反射的相對雙向反射分佈函數,研究了鍍膜( al + mgf _ 2 )前後光譜反射率的變化,漫反射的光譜特性及漫反射板表面粗糙度對相對雙向反射分佈函數的影響,使得測量數據反演成為可能。The thermoluminescence intensity increases with the increase of radiation dose and a linear relation is obtained at certain dose period
實驗結果顯示,輻照劑量增加,熱釋光發射隨之增強,並在所研究的劑量范圍內呈線性變化。The results show : ( 1 ) the light compensation point and light saturation point of s1 s2 and s3 were in range of 12 ~ 27 mol / m2 s and 180 ~ 360 mol / m2 s, respectively, and they changed with the irradiance. ( 2 ) both light compensation point and light saturation point of s1 were higher than those of s2 and 83, and s1 showed greater capability against high irradiance than s2 and s3. ( 3 ) the optimal temperature of the three strains were 25, 35 and 30, respectively, and they had temporal effect. ( 4 ) respiratory rate rose as the temperature rising, and at about 40, it reached the peak
結果表明: ( 1 ) s _ 1 、 s _ 2 、 s _ 3的光補償點和光飽和點的變化范圍分別為12 27 mol m ~ 2 ? s和144 360 mol m ~ 2 ? s ,二者可隨光照環境的變化而變化,其中s _ 1的光補償點和光飽和點均高於s _ 2和s _ 3 ,且表現出強于其餘兩個藻種的抵禦強光輻射的能力; ( 2 )三個藻種的最適溫度分別為25 , 35 ,和30 ,具有時間效應; ( 3 )呼吸速率隨溫度的升高而升高,最大值出現在40附近;溫度低於25 , s _ 1的光合速率最高,呼吸速率最低,表現出很強的低溫適應性; ( 4 )螺旋藻的光合特性可隨光照環境的變化而變化,光強增強,可使螺旋藻的最適光照范圍增大,抵禦強輻射的能力增強; ( 5 )螺旋藻受到溫度脅迫時,其最適光照范圍變窄,對光強的敏感性增加。In respect of direct radiation in air and from the ground, real - time measurements are undertaken by 10 fixed stations of the radiation monitoring network ( figure 1 ) which send data back to hko every minute. the air is also sampled at these sites to cover the inhalation pathway. to enable early response, an automatic gamma spectrometry system at ping chau, the station closest to daya bay, continuously samples the air, carries out measurements and transmits the results to hko, all automatically
該網路由十個固定監測站所組成,不停地測量香港境內空氣及土壤中放射性物質的直接照射,並每分鐘實時把測量結果傳回天文臺總部。此外,每個監測站亦會抽取空氣樣本,監測呼吸途徑中放射性物質。為了在發生事故時能盡快作出應變,天文臺在香港最接近大亞灣的平洲設立了一套自動伽馬譜法系統,不停地收集空氣樣本,作實時實地的輻射測量,並將測量結果全自動地傳送回天文臺。In photorefractive crystal light illumination changes the refractive index of the crystal due to linear electrooptical effect, which in turn changes the light distribution. as a result of the development of this process, a beam, called the phase conjugation wave, leaves the crystal back along the direction of the incident beam and is its phase conjugate replica
光折變晶體在光輻照下,通過晶體中的線性電光效應而產生折射率隨光強的空間分佈而變化,即在晶體內建立起體相位柵。The lifetime of particles co - doped with li + and na + increased as compared to that of un - doped one. however, the lifetime decreased as co - doped with other dopants. in addition, we also studied that ultraviolet ( uv ) light - induced spectral change in eu3 + - doped aluminosilicate glass and red to blue up - conversion emission of tm3 + -, yb3 + - doped y2o3 nanocrystals
( 2 )在紫外光輻照下, eu ~ ( 3 + )摻雜的氧化物玻璃電荷遷移帶強度降低,通過研究輻照與激光的功率密度、波長的關系,發現這種變化屬于單光子過程,並具有頻率選擇性。Electronic states d contact charging of polymers
輻照效應改變聚合物表面靜電特性之研究分享友人