In the field of nuclear safeguard , physical protection is an important technical measure 在核保障領(lǐng)域,實物保護是一項重要的技術(shù)手段。
Last year , in an effort to avoid being referred to the security council for its egregious breaches of nuclear safeguards , iran offered to clear up all outstanding issues in just three weeks 去年,在一次逃避聯(lián)合國安理會追究它的核裝置問題的努力中,伊朗提出3周內(nèi)解決所有明顯的爭議問題。
Uranium enrichment measurement and attributes determination are important activities in mc & a system and routine safeguards inspections . y - ray spectrometry is important one of nda methods widely used in nuclear safeguards 鈾樣品的富集度分析及屬性判定是核保障中衡算測量和核查測量的重要內(nèi)容,能譜分析方法是核保障無損分析( nda )技術(shù)中重點研究的方法。
Under a nuclear safeguards agreement , australia will need to accept chinese assurances that any uranium exported from australia would be used for peaceful purposes only , and that it would comply with the international nuclear non - proliferation treaty ( npt ) 在一項核能源安全控制協(xié)議下,澳大利亞需要中國保證任何輸出的鈾都只能用于和平的目的,這也和澳大利亞參加的國際核不擴散條約( npt )一致。
For example , the united states continues to be concerned about chinese sales of dangerous weapons and technologies . through our dialogue , however , we have built a record of cooperation on agreements to ban nuclear explosions , outlaw chemical arms and enhance international nuclear safeguards 自一九五二年起,我們與日本的安全關(guān)系一直是維持該區(qū)安定環(huán)境的要素,使該區(qū)各國不用分心研發(fā)武器而可全力發(fā)展經(jīng)濟。
These activities include efforts to strengthen export controls , international nuclear safeguards , physical protection of nuclear materials and facilities , nuclear emergency management , and radioactive source security by setting up information exchanges and training programs 這些安全努力包括:通過建立信息交流和培訓(xùn)項目加強出口控制、國際核安全保障、核材料及設(shè)施實地保護、核危機處理以及對放射源的保護。
Nondestructive assay ( nda ) techniques have become powerful tools for quantitative determination of special nuclear materials ( snm ) , and played an important role in nuclear material control and accounting ( mc & a ) , also in inspection of nuclear safeguards 無損分析( nda : nondestructiveassay )技術(shù)已經(jīng)成為定量分析特種核材料( snm : specialnuclearmaterials )的重要工具,它在核材料控制與衡算( mc & a )方面以及在核保障核查工作中起著重要作用。
The agreement establishes a process to collaborate with each other and with the international atomic energy agency ( iaea ) on export controls , international nuclear safeguards , protection of nuclear materials and facilities , nuclear emergency management and radioactive source security , it said 這一協(xié)議為雙方的合作,以及國際原子能組織控制下的核能出口,國際核安全、核原料的安全和保護、核問題緊急的處理、放射性核能的安全問題,都作出了建設(shè)性的貢獻。
The present work is the first in china to research tgs according to the requirements of nuclear safeguards technology in china . three key techniques , determination of detection efficiency , tgs transmission image reconstruction methods and fast reconstruction technique of tgs emission image , are researched thoroughly based on the careful analysis of lots of information on tgs 本文在充分調(diào)研和分析了國外1990年到現(xiàn)在有關(guān)tgs技術(shù)的信息資料和大量論文報告的基礎(chǔ)上,針對tgs技術(shù)研究中的探測效率刻度、透射測量圖像重建計算和發(fā)射測量圖像快速重建計算三個關(guān)鍵技術(shù)進行了如下三方面的研究。
Ann methods are feasible for the verification measurements in nuclear safeguards . experimental data sets have been used to study the performance of neural networks involving radial basis function neural network and generalized regression neural network ( grnn ) . the optimization of the parameter spreads have been given and the analysis error of grnn no more than 0 . 2 % 分析結(jié)果表明,使用泛化能力較高的混合訓(xùn)練集訓(xùn)練神經(jīng)網(wǎng)絡(luò),網(wǎng)絡(luò)給出的富集度值與標準樣品的標稱值之間的相對差異小于13 % ;使用泛化能力相對較弱的分組訓(xùn)練集訓(xùn)練神經(jīng)網(wǎng)絡(luò),網(wǎng)絡(luò)給出的分析結(jié)果的不確定度小于2 % ;使用分組訓(xùn)練集和廣義回歸神經(jīng)網(wǎng)絡(luò),網(wǎng)絡(luò)給出的分析結(jié)果的不確定度小于0