There are better performances in the films prepared by ba2ca2cu3ox target than by ba2cacu2ox target. the single - phase tl2ba2cacu2o8 hts thin film was obtained with a tc0 of 107k at the optimal tl2o partial pressure and thallination temperature 750. on excursion from the optimal conditions, there exist some impurities in the resultant films resulting in a reduction in tc0 and surface quality with change in the microstructure morphology
研究結果表明,採用成分為ba2ca2cu3ox的靶材制備的薄膜性能要優于成分為ba2cacu2ox的靶材;使用組成式為tl1 . 9ba2ca2cu3oy的
鉈片做
鉈源時,形成的tl2o分壓達到最佳值;在最佳tl2o分壓和最佳
鉈化溫度750的條件下,制備出了純相完全c軸取向的tl2ba2cacu2o8高溫超導薄膜,其tc0高達107k ,膜面均勻平整光滑,呈圓片狀組織;偏離最佳制備工藝參數的條件下,制得的薄膜中都含有一定量的雜相,雜相的生成使得tc0值下降,薄膜表面質量下降,薄膜組織形貌發生變
化。
Calibration and usage of thallium - activated sodium iodide detector systems for assay of radionuclides
鉈的校準和使用.放射性核素分析用活性碘
化鈉探測系統
The phases of sulfuric acid slag of various sizes were drawn by seven - step method in the improved separation condition of disturber, and phases of thallium were compared before and after the slag was grinned to analyze phase migration
為了進一步探討顆粒物中
鉈相態提取的技術和方法,在優
化干擾物分離條件下,採用七步法提取了幾種不同粒徑硫酸廢渣中
鉈的相態,比較了廢渣研磨前、后各相態
鉈的異同。
First, we prepared amorphous bacacuo precursor thin films on single crystal laalo3 ( 001 ) substrate by rf magnetron sputtering. then tl2ba2cacu2o8 hts thin films were obtained by an ex situ post annealing
本文採用射頻磁控濺射法在laalo3 ( 001 )單晶基片上制備了bacacuo非晶前驅物薄膜,然後將前驅物薄膜進行非原位
鉈化處理,制備了tl2ba2cacu2o8高溫超導薄膜。
In the first step, effect of the target ' s components on properties of thin films was investigated. influences of tl2o partial pressure and thallination temperature on the component phases and properties of tl2ba2cacu2o8 hts thin films were studied in the second step of ex situ post annealing treatments
在濺射沉積前驅物薄膜的過程中,研究了靶材成分對薄膜性能的影響;
鉈化后處理過程中,研究了tl2o分壓和
鉈化溫度對tl2ba2cacu2o8高溫超導薄膜相組成及其性能的影響。
Simultaneous determination of gallium, indium and thallium in geochemical samples by inductively coupled plasma mass spectrometry
電感耦合等離子體質譜法直接同時測定地球
化學樣品中鎵銦
鉈
Nuclear instrumentation - thallium activated sodium iodide detector systems for assay of radionuclides - calibration and usage
核儀器.放射性核素分析用
鉈活性碘
化鈉探測系統.校正和使用方法
Nuclear instrumentation - thallium activated sodium iodide detector systems for assay of radionuclides - calibration and usage iec 61453 : 1997
核儀器.放射性核素分析用
鉈活性碘
化鈉探測系統.校正
Industrial pollution has been a problem in certain areas of hong kong, and 12 parameters relating to metals and metalloids were initially used in 1986 to measure the degree of such pollution. these parameters are aluminium, arsenic, boron, cadmium, chromium, copper, iron, mercury, manganese, nickel, lead, and zinc. in 1997, another seven were added antimony, barium, beryllium, molybdenum, silver, thallium, and vanadium, making a total of 19
香港部分地區多年來一直受工業污染的困擾, 1986年河溪水質監測計劃推行初期我們用12項金屬及準金屬參數來檢驗工業污染水平:鋁砷硼鎘鉻銅鐵汞錳鎳鉛及鋅其後在1997年起另添加了七項新參數:銻鋇鈹鉬銀
鉈及釩,監測的參數共19項,此外並測試了四項與工商業污染有密切關系的參數,即氰
化物總量氟油脂及洗滌劑。
Clinical manifestations include atypical chest pain, an abnormal resting ekg, a positive treadmill test, sustained ventricular tachycardia, bundle branch blockage, paroxysmal atrioventricular block, reversible perfusion defect noted on thallium scan, etc
臨床表徵包括非型胸痛、異常心電圖變
化、跑步機式驗陽性、持續性心室頻脈、吏傳導阻滯、陣發性房室阻斷、
鉈-心肌掃描可見可逆性心肌灌流不足等等。
Continuous determination of trace silver, cadmium and thallium in geochemical samples by flame atomic absorption spectrophotometry with ki - mibk extraction
火焰原子吸收分光光度法連續測定地球化學樣品中痕量銀鎘鉈