1.It is shown that the radioactivity level of tin polymetallic ore, undressed ore and adjacent formation is affected by the strata and mineralization type, the radioactivity level of sulfide ore is not high as a whole, while that of tin ore generally is several times higher than the background value and that of debris and slag is also relatively high, whose impact on the environment is not neglectable.
锡多金属矿原矿及围岩放射性水平受地层与矿化类型影响很大，硫化矿整体放射性水平不高，砂锡矿却普遍高出背景值数倍，尾矿、炉渣放射性水平也相对较高，对环境的影响不容忽视。
2.The contamination of isotope is an important factor that affects radioactivity isotope tracer injection profile logging, and the application of "GTP tiny ball without radioactivity" is an efficient way to eliminate contamination of isotope.
摘要同位素沾污是影响放射性同位素示踪注水剖面测井的一个重要因素，采用“冷球”是减少同位素沾污的一种有效手段。
3.When NFC-14(5.5×10~5 cpm) was administered orally, however, only 7.2% of radioactivity was excreted in the urine in five hours, while about 84% of the dose was found in the feces and gastro-intestinal tract. The twenty-four hour urinary excretion of radioactivity was about 17%.
口服N-甲C~(14)后5小时及24小时,分?e自尿排出剂量的7.2％及17.4％,自粪排出3.8％及38.9％,自胃?道?热菸锶椿厥樟思亮康?0.4％及11.0％。
4.The relative radioactivity of various organs and bloodwere detected by liquid scintillation counting technique。 The relative radioactivity of liver was thehighest in various organs after ￣3H-ACM-IBC-NP was injected via mice tail vein and orally admin-istered,and it was obviously different from ￣3H-ACM solution。
毫微粒制剂在小鼠各脏器中相对放射性强度以肝脏最高，尾静脉iv与po给药分别达给予量的71．21％与53．76％，分别是￣3H－阿克拉霉素A水溶液分布量的3．62倍和3．95倍。
5.The radioactivity of per gram medial rectus in group A was higher than that in group B(t=3.731,P=0.01),but there was no significant difference in the radioactivity of per gram muscles among other homonymous muscles (P>0.05).
2组同名肌的单位质量放射性活度比较,A组内直肌明显高于B组(t=3.731,P=0.01),而其他同名肌之间则无明显差异(P>0.05)。
6.Subsequently, 233 Pa is eluted from the Vycor glass column with concentrated H 2SO 4 solutiion and Np and Pa is completely separated. Then α radioactivity of 237 Np and γ radioactivity of 233 Pa are measured with liquid scintillation counting method and γ energy spectrum method separately.
研究结果表明 ,用H2 SO4 解吸2 33Pa ,能使2 37Np与2 33Pa定量分离。
7.By the combination of charged particle activation analysis (CPAA) with channeling, we have measured the 11C radioactivity from the reaction 10B(d,n)11C using irradiation of about 2. 7 MeV deuterons along , and random directions of LEC (Liquid Encapsulated Czochralski) grown GaAs. With our theoretical treatment based on the channeling theory, we have calculated the lattice location of boron in LEC GaAs.
利用荷电粒子活化分析和沟道技术相结合,通过测定从〈100〉、〈110〉及随机方向入射的氘束由~(10)B(d,n)~(11)C而产生的~(11)C的放射性活度A_(〈100〉)、A_(〈100〉)及A_T,经过理论计算,便可以得出硼在砷化镓中的晶格位置的分布。
8.The determination of potassium in soil by AAS and calculation of β-radioactivity of ~(40)K
泥土中钾的原子吸收法测定和~(40)K的β放射性计算
9.Within 0.5～1 hour after administration of ~3H-pyquiton to mice infected with Schistosoma japonicum at a single dose of 100 mg/kg, the radioactivity levels of the worms reached maximum, but declined markedly 4 hours later In vitro, the uptake of ~3H-pyquiton by bisexual worms maintained in cultural medium was also prompt.
感染小鼠一次口服~3H-吡喹酮100mg/kg后,其体内两性血吸虫的~3H含量以给药后0.5～1小时为最高,4小时后则有明显减少。
