星體化學 的英文怎麼說
中文拼音 [xīngtǐhuàxué]
星體化學
英文
planetary chemistry-
Dr bernstein is a research scientist and deputy chief of the space science and astrobiology division at nasa ames research center where he studies the organic photochemistry of interstellar cometary ices
Dr bernstein是美國太空總署ames research center的太空科學及太空生物分部的副主管，並且在天體化學實驗室擔任研究科學家，專門研究星際和彗星上冰層的有機光化學。The extreme carbon stars, whose derived mass loss rates and optical depths are both very high, are more evolved than infrared carbon stars. these stars are expected to evolve into protoplanatary nebula soon
極端碳星是高度演化后的紅外碳星，它的質量損失率及光深都非常高，幾乎沒有其光學對應體，並將很快演化為前行星狀星雲。The secular influence of solar mass - loss on the orbital elements of meteor steams is examined by using the method of celestial mechanics of variable mass in this paper
摘要將作者在變質量天體力學所得理論結果應用於太陽質量損失對流星群軌道根數變化的長期效應上。Across the rigid - flexible coupling dynamic analysis, we acquired the coupled effects between the three - dimensional attitude motion of the satellite and the flexible vibration of the antenna ' s supporting beam, and got the dynamic behaviors of the system. and we found the change pattern of the antenna ' s structure parameters, which decide the system ' s connatural characteristic and its dynamic response
通過對衛星?天線形成的剛柔耦合系統進行動力學分析，獲得了衛星的剛體運動與天線的彈性振動之間的耦合影響規律及其真實的動力學行為，得到了天線結構參數對衛星?天線系統的固有特性及其動力學響應的影響規律，為衛星姿態控制和天線結構優化設計奠定了基礎。Evolution of stars of all masses takes place on a hydrodynamic time scale.
各種質量的恆星的演化，均以流體力學的時間尺度進行。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。So combine the item of “ space targets surveillance photoelectricity telescopes arrays system ”, this thesis does research in developing space targets visualization system. the main achievement in this thesis can be summarized as follows : 1. expatiate e the basic theory of satellite track dynamic, analyse the orbit characteristic of two - body problem and launch window, subastral point calculation, visibility and coverage analysis, two - line element sets
本文結合「空間目標監視光電望遠鏡陣系統」課題，進行了空間目標可視化系統的設計和研究，主要作了以下幾方面的工作: 1 、闡述了衛星軌道動力學的基本原理，分析了二體軌道特性和發射窗口的基本特性，星下點軌跡計算、可見性和覆蓋分析和兩行根數。Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented
許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型That both natality and mortality, as well as all other phenomena of evolution, tidal movements, lunar phases, blood temperatures, diseases in general, everything, in fine, in nature s vast workshop from the extinction of some remote sun to the blossoming of one of the countless flowers which beautify our public parks, is subject to a law of numeration as yet unascertained
文林奇先生算術學士提出了富於獨創性的建議：出生與死亡，與所有其他進化現象潮汐的漲落月亮的盈虧體溫的高低一般疾病一樣。總而言之，大自然之巨大作坊中的萬物，遠方一顆恆星之消失乃至點綴公園的無數鮮花之綻開，均應受計數法則的支配，而這一法則迄今尚未確定下來。The asteroids are the most important small bodies in the solarsystem, and they mainly lies in the two locations - a main belt between the mars ' s orbit and the jupiter ' s and the near - earth space. the most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth, thus they could move into inside of the earth ' s orbit, so that they might close approach or even colliside with the earth ( or other planets, such as the venus, the mars, etc. ). the characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality. by comparing the computation effects of several common numerical methods ( including symplectic algorithm ), and considering the nature of the movement of the small bodies, the corresponding treatments are provided here to improve the reliability of the computation
小行星是太陽系最重要的一類小天體，主要分佈在兩個區域；火星和木星軌道之間的一條主帶和近地空間.近地小行星軌道的最大特點是其軌道半長徑與地球軌道半長徑相近，或近日距離接近甚至小於日地平均距離，其運動可深入到地球軌道的內部，這將導致該類小行星與地球（還有金星、火星等）十分靠近甚至發生碰撞.這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效.通過對幾種常用數值方法（包括辛演算法）計算效果的比較，根據小天體運動自身的特性，給出了相應處理措施，從而可提高計算結果的可靠性Based on the theoretic research above, a prototype system of multidisciplinary synthetic design for system design of satellite is developed. practice indicates that the synthetic integration of mission analysis stage, system design argumentation stage and system design stage in the whole course of system design of satellite is basically implemented with this system, which offers an assistant tool of design and decision - making for the design staff
實踐表明，該原型系統基本實現了衛星總體方案設計中任務分析階段、總體方案論證階段和總體方案設計階段全過程的綜合集成，為設計人員提供了一個輔助設計分析、決策的工具;通過系統的開發，探索了一條開展衛星總體多學科綜合設計優化的技術途徑，實踐證明這條思路整體上是可行的。Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。The aim of the galaxy chemical evolution research is to reproduce the element abundance patter of stars and gas in the galaxy
銀河系化學演化研究的任務，從根本來說，是重現銀河系中恆星與氣體的元素豐度分布圖象。The chemistry of stars and interstellar space
天體化學關于星和星際空間的化學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。Immunohistochemistry method was used to observe the temporal and spatial expression of nmdar2, signal molecules, skeleton proteins and connexins in son neurons and glias ( astrocytes and microglias ). radioimmunoassay was used to detect vasopressin ( vp ) content in plasma before and after hyperosmotic stimulation. ultrastructure between activated son astrocytes and neurons was observed by double immune - electron - microscopic staining method
應用免疫組織化學方法光鏡下觀察高滲刺激后，大鼠視上核膠質細胞（星形膠質細胞和小膠質細胞）受體（ nmdar2 ） 、信號分子、骨架蛋白及縫隙連接蛋白的表達的時空變化；應用放免測定檢測高滲刺激前後血漿中vp含量。British mathematician, astronomer, and physicist who was an early exponent of the theory of relativity and conducted research on the evolution, structure, and motion of stars
愛丁頓，阿瑟?斯坦利1882 1944英國數學家、天文學家和物理學家，相對論的早期擁護者，在星體演化、結構和運動方面有很深研究Professor kwok enjoys high international standing in the field of stellar evolution and astrochemistry
郭教授在星體演化及天文化學領域上的國際地位甚高。Our model introduces the general equations of chemical evolution used in galaxies to studies of gcs. in this model the important gas outflow caused by the supernova explosion and other processes during the formation of globular clusters is included. based on such a self - enrichment model, monte carlo method is used to simulate the formation and chemical evolution of globular cluster systems, from which a new explanation of the bimodal metallicity distribution can be given
本文把星系演化中通用的化學演化方程引入到球狀星團這一系統中來，特別考慮到球狀星團中恆星形成過程中超新星爆發等因素引發的氣體外流，把這一重要的物理過程包含到化學演化方程中，並用蒙特卡羅方法來模擬球狀星團系統的自增豐演化。Pharmacokinetics of multiple - dose pazufloxacin mesilate sodium chloride injection in chinese healthy volunteers
多劑量甲磺酸帕珠沙星氯化鈉注射液在健康人體的藥代動力學分享友人