x
uploads/xe.jpg

xe Xe = 【化學】元素氙 (xenon) 的符號。

xebec

( 3 ) the research of lycoris on the systematical relationship of micro - morphology and anatomy is absent . it is essential to generalize the character inde xes of morphology , anatomy , cytology , palynology and molecular physiology . so we can establish classification system of lycoris and draw a reasonable family tree of lycoris 因此,必須綜合形態學、解剖學、細胞學、孢粉學和分子生物學等各方面的性狀指標,才能夠建立更合理的石蒜屬植物分類系統,并繪制出完整的石蒜屬分支系統樹。

Since that we could get the extreme value xe and the optimal catching efforts e . for the difficulties of giving specific expressions and computational steps for the multi - species system we took a two - dimension model as an example to interpret the steps so that the readers can get a intuitive and peculiar understanding of the process 由于多種群系統難以給出具體的計算步驟和表達式,本文還以二維系統情況為例給出了計算和討論的具體過程,使讀者對這個問題能有更直觀明確的了解

Finally , we rebuild a soft x - ray reflectometer in 8 - 30nm region by replacing its metal target with low - debris kr and xe aerosol spray targets . reflectivity of soft x - ray multilayer mirrors are measured by the new reflectometer , and the results show the accuracy is about 2 % % 最后,用低碎屑液體微滴噴射靶lpp光源代替污染嚴重的金屬靶lpp光源,改建了一臺波段范圍8 30nm的軟x射線反射率計,并對軟x射線多層膜的反射率進行了大量測量,反射率測量重復性達到2 。

When compared with kds301 ( lexa + ) , xe ( lexa - ) cells showed quite similar levels of survival curve to y - irradiation and mmc , indicating lexa gene had no effect on radiation resistance of deinococcus radiodurans . deinococcus radiodurans “ lexa had no revelance with its extremely radioresistance . the recombinant plasmid pza172 was constructed by cloning the lexa gene of deinococcus radiodurans into the vector plasmid puc19 in the downstream of lacz promoter 對lexa基因突變體xe的研究表明,其輻射抗性與lexa基因野生型的抗輻射菌kd8301相近,存活曲線上均顯示有一個寬大的肩區,結果發現lexa基因的突變并沒有改變抗輻射菌的獨特抗性,說明lexa基因與輻射抗性無關。

Therefore the profit expression with these two variablesharvesting efforts e and its mapping equilibrium xe could be translated into an expression which included only one variantthe positive equilibrium xe so that the problem is converted into the one of seeking stationary points in the range we requied by calculus essential principal . this equaled to solve a n - dimension linear equation group and we could easily analyse every possible situation of the solutions 由于此時系統的正平衡點存在且唯一,可從系統模型中求出正平衡點與相應捕獲努力量之間的關系式,從而可將包含捕獲努力量e和正平衡點x _ e兩個未知量的利潤表達式轉化為只含正平衡點x _ e的表達式

By analyzing the differentiae of the total cross sections ( tcs ) , the differential cross sections ( dcs ) , the partial wave cross sections ( pcs ) , the change patterns of the cross sections and the influence on the cross sections because of the var iations in the mass of systems and the relative kinetic energy of incoming atoms for symmetric isotopically substituted systems he , ne , ar , kr , xe - h2 , d2 , t2 have been obtained . in this paper , we use the tang - toennies potential model for the inertia gas atoms - h2 systems , the murrell - sorbie potential surface with five parameters for the molecules h2 , d2 , t2 . for the inertia gas atoms - d2 , t2 systems , we use the same potential surface with the inertia gas atoms - h2 systems 通過分析he 、 ne 、 ar 、 kr 、 xe ? h _ 2 、 d _ 2 、 t _ 2各碰撞體系在總截面、微分截面和分波截面等方面的差異,總結出在h _ 2分子的對稱同位素替代情形下惰性氣體原子與h _ 2分子體系碰撞截面的變化規律;通過比較he 、 ne 、 ar 、 kr 、 xe ? h _ 2 、 d _ 2 、 t _ 2各體系在碰撞總截面、微分截面、分波截面等方面的不同,詳細討論了同位素替代碰撞體系中體系約化質量及入射原子的相對碰撞能量的變化對碰撞截面的影響,得出了這種影響的規律性。

The time resolution of 43 s and 1 78 s , the wavelength range of 350 - 800nm and the wavelength resolution of 0 . 3nm have been reached in the experiment of xe flash - lamp spectral measuring . the time resolution of 100 s is obtained in the experiment of spectral measurement of matter under shock compressed with the same wavelength detecting range and the same wavelength resolution 研制成功了測量裝置,在xe閃光燈的瞬態光譜測量中,分別獲得了43ps和廠8ps的時間分辨率,在靶材的沖擊壓縮瞬態光譜測量中,獲得了100卜s的時間分辨率。

Thirdly , a new anisotropic potential energy surface is presented for the he - no system according to the ms potential model . the potential is not only quite agreement with the accurate esmsv potential for the system , but also has the same form and part parameters for the ms potentials of other rare gases ( ar , kr , xe ) with no molecule 第三,根據ms勢模型給出了he - no系統的各向異性勢能面,該勢能面不僅與he - no較準確的勢能面esmsv符合較好,而且與其它惰性氣體原子( ar 、 kr 、 xe )與no分子的ms勢具有相同的形式和部分勢能參數。

For liquid xe aerosol spray target , important lpp characteristics , such as laser - to - euv conversion efficiency , euv radiation absorption , debris production by target material erosion or deposition , are studied in detail , a 13 . 4nm conversion efficiency of 0 . 75 % into 2 % bandwidth and 2 steradian emission solid angle is achieved at 0 . 5mm laser - nozzle distance 在實驗上,建成了一套高光譜分辨率和高靈敏度的軟x射線脈沖輻射測量裝置。測量了co _ 2 、 o _ 2 、 cf _ 4 、 kr和xe液體微滴噴射靶lpp光源在6 20nm波段的軟x射線輻射光譜。

The studies on optical properties and irradiation effect of heavy ion implanted samples are very important from both theoretical and applied view points . in this work , the optical properties and defect structures in xe + - implanted ysz and ni + - implanted al2o3 were studied by using optical spectroscopy , tem , xps and trim 96 calculation . it was found that 1 ) a broad absorption band centered at 522 nm was observed in 1 1016 cm - 2 xe + - implanted ysz 離子注入是一種重要的表面改性技術, ysz ( yttria - stabilizedcubiczirconia )和- al _ 2o _ 3是兩種性能優良的陶瓷,前者是目前發現的最抗輻照的絕緣體,而后者則是抗輻照最差的絕緣體材料之一,研究重離子注入對其光學性能的影響并以此研究輻照效應,有重要的理論意義和應用價值。

Thirdly , we developed a spectrometer for spectrum diagnosis of soft x - ray pulse sources , and used it to measure spectra of liquid o2 , co2 , cf4 , kr and xe spray target lpp sources in 6 - 20nm band for 8x 10uw / cm2 laser irradiance the results coincide with cowan calculation fairly well 其次,利用低溫制冷技術研制出一臺可連續控溫的液體微滴噴射靶lpp光源。光源具有連續和脈沖噴射兩種工作模式,能使用多種氣?液相變溫度高于液氮溫度的非腐蝕性氣體工作。

( 1 ) the performance of the some lamp - house are compared , such as the incandescent lamp , the halogen - lamp and the xe - lamp , the experiment result shows it is difficulty that the incandescent lamp and halogen - lamp are maked solar simulator . but the xe - lamp cannot be used because the price is too high 對白熾燈、鹵鎢燈及氙燈等幾種光源的性能進行了比較,結果表明把白熾燈和鹵鎢燈作為太陽模擬器的光源是不理想的,而氙燈由于其成本太高,也未采用。

In this paper , the time - resolved spectrum measurement instrument has been improved and optimized based on what we have done , the real experiments for measuring time - resolved spectrum of xe flash - lamp and time - resolved spectrum of matter under pulse laser shocking were made 本文在本科研組已有工作基礎上改進和優化了時間分辨譜測量方法和裝置,對xe閃光燈脈沖時間分辨光譜進行了成功的實測,對脈沖激光沖擊靶材的輻射譜進行了時間分辨測量。

The blue shift could be associated with precipitation of xe gas bubbles . since the precipitation will change the defect morphology and reduce the sizes of each isolated defects , so to intensify the quantum size effects of nano - particles and induce the observed band gap broadening 10 ~ ( 17 ) cm ~ ( - 2 )樣品峰位藍移,是由于xe以氣泡形式析出,改變了缺陷形態、使缺陷的分立尺寸減小,納米粒子的量子尺寸效應變得明顯,導致能隙展寬。

The effect of ni + ion on luminescence had not been detected by fluorescence experiments for implanted doped crystals . 5 ) the xe ion peak concentration lies at a depth of about 47nm under the surface . after ion implantations , the two peaks in o1s spectrum merge into a single one ( 5 )注入的xe ~ +在距表面47nm處濃度取得最大值,離子注入使兩種類型氧格點的化學環境變得相似, o _ ( 1s )譜的兩個峰融合為一個峰。

In this study , lexa mutant of deinococcus radiodurans xe has been successfully constructed . the survival curve of this strain was measured using colony formation assay after treatment with different doses of radiation and different times of mmc 本研究利用已構建的抗輻射菌lexa基因突變體菌株xe ,經受不同劑量射線照射和不同時間的mmc作用,平板菌落計數,繪制存活曲線。

Hardy ' s weakness derived from his apparent inability to control the comings ab nd goings of these divergent impulses and from his unwillingness to cultivate and sustain the energetic and risky o xes 另一方面緣起于他不愿意去培養和維持那些富于生機活力和風險性強的創作沖動。

Conclusion aerosol inhalation of “ chuan xe zhi “ is quite effective for asthmatic bronchitis and acute attack of asthma 結論喘可治霧化吸入輔助治療兒童喘息性支氣管炎及哮喘急性發作效果明顯,同時有增加呼吸道抵抗力的作用。

The practical value of optical assay of platelet count by sysmex xe - 2100 hematoloical analyzer in abnormal platelet particle size distribution histogram 2100血液分析儀光學法計數血小板在血小板直方圖異常時的應用價值