neutron capture 中文意思是什麼
neutron capture
解釋
中子捕獲-
In recent years, study of boron neutron capture therapy has been aimed at the establishment of epithermal neutron beams in order to avoid the open - skull surgury and for the treatment of deep - seated tumors
摘要近年來，硼中子捕捉治療之研究傾向于採用超熱中子束以避免切開頭蓋骨之手術及進行較深層之腫瘤治療。 -
Neutron capture therapy ; liposome ; gadolinium complex ; tumor cell
中子俘獲治療脂質體釓配合物癌細胞 -
Transport of liposome as a carrier for gadolinium neutron capture therapy
脂質體作為釓中子俘獲治療腫瘤藥物載體的 -
On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element
本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。 -
The average abundance distributions of heavy elements in metal - poor stars can provide fairly direct and detailed information on the nucleosynthesis in every stage after the formation of galaxies. furthermore, it can put more accurate constraints on the chemical evolution of neutron - capture elements. the solution to this problem will have important effect on the solution to a series of problems about nuclear astrophysics and the galactic evolution
貧金屬星的中子俘獲元素豐度分佈能提供星系形成后各個階段核合成的較為直接和詳細的信息，並為星系化學演化的研究提供更為準確的約束，這一問題的解決將對核天體物理及星系化學演化的一系列問題的解決產生重要影響。 -
Perhaps nuclear reactions, such as neutron capture
也許是某種核反應，例如，中子捕獲？ -
But if we want to make it work normaly and make it work with electronic development to distinguish the neutron ' s inelastic scattering y spectra with the capture spectra, then we can get the element ' s inelastic scattering y spectra, we must research again the controlled circuit of the pulse neutron generator
而要使脈沖中子發生器正常工作並且能於我們自己研製的電控門配合，將中子與物質中所含元素的原子核相互作用的非彈性散射反應和俘獲反應區分丌來，從而得到能夠較好的表徵該元素的非彈性散射譜。 -
The results show that the contribution of direct capture is primary in the interested temperature range of astrophysics. toward the 12c ( n, y ) 13c reaction, our calculations are good agreement with a recent experiment at low energy. a obvious enhancement of the cross section of 12c ( n, y ) 13c first excited state has been found, and it supports that the first excited state 1 / 2 + of 13c is a neutron halo state which has been found experimentally by our department group
對于第一個核反應，我們計算了直接俘獲過程以及兩個共振態的俘獲截面和總截面，我們的計算結果顯示，在天體感興趣的溫度范圍內，直接俘獲過程對總截面的貢獻是主要的；對于第二個反應，我們的計算結果與已有的實驗結果符合的較好，其中~ （ 12 ） c （ n ， ） ~ （ 13 ） c的第一激發態計算結果顯示出截面有明顯增大，這從理論上支持了我所關于~ （ 13 ） c第一激發態具暈結構的實驗發現，這是國際上第一次在激發態中發現暈結構。 -
This letter aiming at this respect, hints for neutron capture element are derived : 1. based on the adopted galactic evolution scenario, together with the three - zone multi - phase model, observational features of the solar vicinty region can be well reproduced. among those are particuly g - dwarf problem. the g - dwarf problem in halo and thin - disk can be solved
本文正是從這方面著手，對中子俘獲元素進行了研究，得到如（ 1 ） r過程元素核合成產量隨著超新星前身星的質量的增加而單調增加， r -過程核合成場所是sn ，質量范圍是18m _ m 50m _ ，這與mathews 、 tsujimoto和travaglio等人的結果完全不同。 -
In czochralski silicon crystals ( czsi ) through fast neutron irradiation, formation and conversion of defects were investigated using fourier transform infrared spectroscopy ( ftir ), positron annihilation technology ( pat ) and scanning electron microscope ( sem ). the results showed that fast neutron irradiation induced large quantity of metastable defects which can be the capture centers of positron, positron annihilation average lifetime of samples increased with increasing of irradiation dosage. positron annihilation average lifetime of irradiation samples through dosage up to 1 1018 n. cm - 2 tended to constant
本文對直拉硅樣品進行了不同劑量的快中子輻照，在硅中引入大量的亞穩態缺陷，研究這些亞穩態缺陷的形成，並在較寬的溫度范圍內對輻照樣品進行了退火處理，研究退火后亞穩態缺陷的轉化及同硅中氧的相互作用，應用傅立葉變換紅外光譜技術（ ftir ） 、正電子湮沒技術（ pat ）和掃描電鏡（ sem ）進行了測試。 -
Measurement and monte - carlo correction of neutron radiative capture cross section for 75as
中子輻射俘獲截面的實驗測量及蒙特卡羅修正 -
Using it, time amplitude converter and pulse neutron generator, the y spectra of 14mev pulse neutrons is measured. utilizing the time difference of several different reactions about the interaction of neutrons and nucleus, the whole spectra and the capture spectra are measured. a method that uses double gate subtracting background to gain the fast neutrons " inelastic scattering y spectra is introduced
研製了一種線性門電路，介紹了它與脈沖中子發生器、多道脈沖幅度分析器配合，進行14mev脈沖中子譜的測量，利用中子和原子核相互作用的幾種反應在時間上的差異，測量了總譜和俘獲譜，採用雙門減本底方法得到了快中子非彈性散射譜。 -
Liposome is an effective nuclide delivery agent for neutron capture therapy. in this paper liposomes containing encapsulated gadolinium complex were prepared and characterized. the influence of formulation factors such as ph, ionic strength, buffer, and storage time upon the stability of liposomes was investigated. the uptake rate constant and its concentration dependence of lgd in tumor cells were compared in vitro with that of gd complex itself. the results indicate that the uptake rate of lgd in tumor cells increases to eight times as much as that of gd - edta, but the release rate of gd from tumor cells containing lgd is remarkably lower than that from the tumor cells containing gd - edta. the results reveal that lgd would be a potential drug for neutron capture therapy of cancer
制備和表徵了包埋gd - edta的脂質體，測定了ph ，離子強度，緩沖液組成及溫度對gd - edta脂質體的影響，比較了gd - edta脂質體和gd - edta被腫瘤細胞攝入的動力學曲線。結果表明， gd - edta脂質體在37和生理條件下最穩定，腫瘤細胞攝入gd - edta脂質體速率是gd - edta的8倍，而釋放gd的速率， gd - edta脂質體遠遠低於gd - edta ，這些結果提供了脂質體包埋gd - edta作為釓中子俘獲治療藥物的可能性。 -
Consequently the distributions of the corresponding solar s, h component is typical and can serve as a standard pattern in investigating the abundance distribution of neutron capture elements at any metallicity
因而太陽系的s _ （ ml ）的88 a 138部分可以近似做為任何金屬豐度情況下的標準豐度分佈模式。一s -
Kinetics and mechanism study of across - membrane transport of liposome as a carrier for gadolinium neutron capture therapy
脂質體作為釓中子俘獲治療腫瘤藥物載體的跨膜動力學及機理研究 -
From 1950s to 1980s, the ( superscript 10 ) b - neutron capture therapy ( bnct ) has been considered as an effective and useful treatment modality for some kinds of cancer through a series of testing work
摘要自1950年代到1980年代，硼捉中子治療模式經過種種的試驗階段，其臨床實用性終于在某些癌病的治療上獲得初步證實。
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