中子吸收作用 的英文怎麼說

中文拼音 [zhōngzixīshōuzuòyòng]
中子吸收作用 英文
neutron absorption
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 吸 : 動詞1 （把液體、氣體等引入體內） inhale; breathe in; draw 2 （吸收） absorb; suck up 3 （吸引） a...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 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...
  1. Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time

    隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。
  2. We have calculated one - and two - photon absorption cross sections of the lowest excited states of a series of molecules combined with benzene, stilben, thiophene as center attached with amine, diphenylamine, diethylamine as electron - donor and nitryl as electron - acceptor ; the effects of molecular length, n center and electron - donor on two - photon absorption cross sections have been studied and all calculations have been carried out using the density functional theory at an ab initio level. it is found that the molecular length and the one - photon absorption intensity are quite strongly c orrelated factors, and that a corresponding correlation for the two - photon absorption is decreasing. it is also found that a most crucial role for the two - photon absorption is played by the n center

    我們分別以苯、二苯乙烯、噻吩為中心，氨基、二苯氨基和二乙氨基為電子給體，硝基為電子受體組合形成的分子為研究對象，在從頭計算的水平上用密度泛函理論計算了這些分子在低激發態下的單、雙光子吸收強度，重點研究了分子的長度、中心和給體的供電子能力對分子單、雙光子吸收的影響。研究結果表明，分子長度與單光子吸收強度之間有密切關系，而在雙光子吸收中這種關系較弱；中心在雙光子吸收中具有重要的作用；在中心和受體一定的情況下，增加給體的供電子能力，可提高雙光子吸收強度。
  3. Some by - products of this work can be used as routine tools in the uv laser laboratory. commercial video ccd cameras are used to image uv laser and soft x rays, window glass as a fluorescer is used to indirectly measure the uv laser beam profile with high energy density, and a special glass which permits uv light to pass through while absorbs the visible, is introduced into the uv beam profiling in strong visible stray light environment

    實驗中發展了一些測量技術，例如用可見光視頻ccd直接測量紫外激光的光束分佈和激光等離子體產生的x光二維圖象，利用窗玻璃作為熒光體測量能量密度較高的紫外光束分佈，利用可見吸收紫外透射玻璃製成的衰減器測量有嚴重背景光的紫外光束分佈，可以作為實驗室的常規測量工具，並有一定的推廣價值。
  4. The main study in this paper included as follows : the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city ; the acute toxicity and joint toxicity of mercury and selenium to swordtail fish ( xiphophorus helleri ) ; the damage of mercury to the indexes of antioxidant system in the gills and livers in swordtail ( including the measurement of the activities of total antioxidative capacity [ t ~ aoc ], superoxide dismutase [ sod ], glutathione peroxidase [ gsh - px ] and the concentration of malondiald - ehyde [ mda ] ) and the relief effects of selenium on it, as well as the physiological damage of mercury on the tissues, namely : the antagonistic effect of na + - k + ~ atpase activity on the tissues between selenite and mercury, and the ultrastructural damage under the exposure of mercury

    研究內容主要有：廣州市河涌沉積物及底棲生物體內重金屬含量及評價；汞和硒對劍尾魚的急性毒性和聯合毒性及安全濃度的評價；汞對劍尾魚鰓和肝臟中抗氧化系統的毒性，包括對總抗氧化能力、超氧化物歧化酶、谷胱甘肽過氧化物酶活力及丙二醛含量的測定及硒對其保護作用；汞對劍尾魚組織生理毒性即：汞對na ~ + - k ~ + atpase活力的影響及硒的保護作用和汞和對劍尾魚組織超微結構的損傷等。以高氯酸?硝酸消化法和火焰原子吸收分光光度法測定了廣州市河涌沉積物和底棲生物中重金屬含量。
  5. Both the red shift of the plasmon absorption band and the sers effect result from the interparticle interactions of gold nanoparticles within the films

    吸收峰紅移及sers效應與薄膜中的金納米粒子間的電磁耦合作用有關。
  6. In this thesis, we design a series of trans - stilbene derivatives and study their two - photon absorption properties by response and few states model. the work is done on dalton and gaussian - 98 program packs

    本論文中；我們選擇二苯乙烯系列衍生物作為研究對象，分別採用響應場方法和少態模型方法研究了它們的雙光子吸收性質，計算過程分別在dalton和gaussian
  7. Zircaloy - 4 is generally used as fuel tubes in pressurized water reactors because of it " s low neutron absorption cross - section, excellent corrosion resistance, good strength and ductility

    由於鋯4合金具有低的中子吸收截面，良好的抗腐蝕能力、高強度以及延展性好的特點，被廣泛用於壓水堆作為核燃料棒的包殼材料。
  8. So we figured that the influence of the electron - electron interactions must be considered in our work. added an electron - electron interaction ( up to the fourth neighbor ) term to the baranowski - buttner - voit ( bbv ) model for polyaniline, we carried out a self - consistent - variation calculation for an biexciton in the pernigranlilne - base polymer, in order to confirm the model hamiltonian. the results showed that two peaks ( near l. oev and 1. 5ev ) appeared in the calculated optical absorption, besides the reproduced electronic structure, bond order wave ( bow ) and ring - torsion angles

    發現引入電子?電子相互作用后，聚苯胺靜態激子的性質受到影響，該聚合物的鍵序波、芳環扭角和電子中文摘要結構發生了變化，而且在理論吸收譜的低能端出現了明顯的二特徵吸收峰（ 1 . 0ev和1 . 5ev附近） ，這一結果與實驗數據很好的吻合，從而這一點表明我們所考慮的因素是合理的。
  9. Use of borosilicate - glass raschig rings as a neutron absorber in solutions of fissile material

    裂變材料溶液中用作中子吸收劑的硼硅玻璃雷氏環的使用
  10. Zirconium alloys are employed extensively in light water cooled reactors ( lwr ) as the cladding materials of fuel elements and other structural materials because of the low capture cross - section for thermal neutrons, good resistance to water - side corrosion at elevated temperature, adequate mechanical properties and high thermal conductivity

    由於鋯的熱中子吸收截面小，並具有優異的耐高溫水腐蝕性能、良好的綜合力學性能和理想的熱導率，因此，鋯合金被用作核電站水冷動力堆核燃料元件的包殼材料和堆芯的其它結構材料。
  11. Lead and cadmium in tap water were preconcentrated by quartz sub - boiling distiller and determined by faas in this method

    摘要把分析測試工作中常用來制備高純水的石英亞沸蒸餾器用於濃縮富集自來水中的鉛、鎘，並用火焰原子吸收光譜法對鉛、鎘進行測定。
  12. Abstract : this paper describes the methods to form silver clusters in solid, liquid and gas phases ; the properties of clusters such as absorption bands, esr, redox potential, ea and ip, and their catalytic behaviours in photo - splitting water and photographic development processes

    文摘:本文綜述了在固相、液相和氣相中形成銀團簇的方法，銀團簇的主要性質如吸收光譜、 esr 、氧還電位、電子親和勢與電離能，以及銀團簇在光解水和照相顯影過程中的催化作用。
  13. The highest concentration of lead was found in antennal gland by atom absorption spectrum, which suggested that the antennal gland might play an important role in detoxifying process of lead. 2

    原子吸收光譜分析表明，觸角腺中鉛的含量最高，達637mg ? kg ~ （ - 1 ） ，表明觸角腺在鉛的解毒方面起著重要作用。
  14. These molecules are secreted into junctions called synapses, where nerve cells abut one another, and when they have done their job they are absorbed back into the cells that secreted them, a process called re - uptake

    這類分子被分泌到神經細胞之間相鄰的突觸連接部位，當它們完成使命后便會通過再吸收作用被吸收回分泌產生了它們的細胞中。
  15. Have used atom to absorb spectral photometer inorganic element contents in determining the fruit of chinese wolfberry, have discussed whose appearance relation with pesticide effect, the health care effect, have provided the certain basis to the effect studying whose pharmacology further and

    用原子吸收分光光度計測定枸杞子中的無機元素的含量，並探討了其與藥效、保健作用的相關關系，為進一步研究其藥理作用提供了一定的依據。
  16. Each quantum of light is removed from the light beams by absorption.

    每一個量子由於吸收作用而從光束中消失。
  17. Abstract : it is reported that in the presence of an appropriate amount of triethanol amine ( tea ) and dodecyltrimethyl - ammonium chloride ( dtac ), the sensitivity for the faas determination of molybdenum and the ability to eliminate interference are remarkably enhanced

    文摘:介紹了在火焰原子吸收光譜法中三乙醇胺及氯化十二烷基三甲基銨對鉬的增感作用及消除干擾的能力。
  18. This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method

    在綜合前人工作基礎上，本文對時域有限差分（ fdtd ）法及其在開關電源輻射電磁場數值計算中的應用進行了系統的分析和研究，其核心內容包括：偽低頻電磁場數值計算中pml吸收邊界條件性能的研究；基於基準問題?電偶極子天線三維輻射電磁場，驗證了本文構造的基於pml吸收邊界條件的三維fdtd法及其計算軟體，並應用於高頻開關電源輻射電磁場的數值分析；提出了一種改進的交替方向隱格式時域有限差分法。
  19. Choosing the atomic absorption spectrometry as a basic analytic method and icp / ms as a contrast method and using the sequential selective extraction schedule, the characteristics of weak geochemical signals from deeply concealed deposits were studied in loess covered jiaolongzhang polymetallic deposit and zhangquanzhuang gold deposit

    本文採用原子吸收法作為基本分析方法，並以icp ms為比較方法，通過選擇性循序提取試驗，研究了甘肅蛟龍掌多金屬礦和河北張全莊金礦黃土覆蓋條件下，地表黃土中地球化學弱信息特徵。
  20. It is show that, for the ultraviolet pre - ionization tea co2 laser, the absorption of two photos in the process of the photo - ionization plays an important role

    研究表明，在紫外預電離teaco _ 2激光器中的光離化過程中雙光子吸收起著十分重要的作用。
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