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The proteinaceous binding media used in Tang Dynasty polychrome pottery was determined using matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS). The optimum conditions for the extraction and subsequent enzymatic hydrolysis of the protein sample were established, and applied to the pretreatment of model and historical samples. Complexation of EDTA in combination with dialysis was determined to be the most effective method for eliminating interferences in polychrome layers taken from historical samples. Model samples were aged by burial in loess so as to more closely replicate the ageing process of the historical samples. Using the aforementioned optimized conditions, the "peptide mass fingerprint" of the binding media of historical and model samples was determined by MALDI-TOF-MS. Comparisons between the "peptide mass fingerprint" obtained for the historical sample and those of the model samples proved that animal glue was used as the binding media for the Tang Dynasty polychrome pottery. It also shows that animal glue used as binding media enjoys a long history in China. 相似文献
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王思成 周小红 方永得 张玉虎 石跃 柳敏良 王建国 郭应祥 高丙水 滑伟 李仕成 马飞 李广顺 何龙 王志刚 颜鑫亮 方芳 吴晓光 贺创业 郑云 王治民 许甫荣 《中国科学:物理学 力学 天文学》2012,(6):639-646
利用非完全熔合反应192Os(7Li,(p,d,t)xn)布居了稳定核195pt的高自旋态.根据γ-γ合关系、γ射线的相对强度和各向异性度的测量结果,建立了195pt核的能级纲图,其中包括11条新的γ跃迁和9个新能级.通过与邻近核的能级系统性比较,指出了195Spt核基于vi-113/2,和vi-213/2vj-1(j=p3/2,f5/2)组态的转动带能级结构.同时,利用Total-Routhian-Surface(TRS)理论计算结果讨论了195pt核的转动带性质. 相似文献
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李仕成 方永得 石跃 张玉虎 周小红 柳敏良 王建国 郭应祥 马飞 方芳 王思成 高丙水 李广顺 丁兵 张宁涛 王志刚 何龙 颜鑫亮 吴晓光 贺创业 郑云 王治民 许甫荣 《中国科学:物理学 力学 天文学》2012,(1):32-41
利用非完全熔合反应192Os(7Li,α2n)布居了稳定核193Ir的高自旋态.基于标准在束γ谱学实验测量结果,扩展了193Ir核原有的能级纲图,并首次观测到了建立在πh11/2组态上的转动带能级结构.根据邻近奇A核已有的高自旋态核结构知识,通过系统学比较和分析,建议了193Ir核的3-准粒子组态.实验发现187-193Ir核πh11/2转动带的旋称劈裂随着中子数的增加而逐渐增大.利用Total-Routhian-Surface理论计算,可以定性地解释这种变化规律. 相似文献
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Numerical simulation on gas production from a hydrate reservoir underlain by a free gas zone 总被引:1,自引:0,他引:1
Physical and mathematical models of gas production by depressurization from a hydrate reservoir underlain by a free gas zone
are established. The mathematical model can interpret the effects of the flow of multiphase fluids, the process of hydrate
dissociation, ice-water phase transition, the variation of permeability, the convection and conduction on hydrate dissociation
and gas and water production. The evolutions of temperature, pressure, and saturations in the hydrate and free gas zones are
elucidated during gas production. The variation of some parameters, such as gas and water rates, with time is presented. The
results show that the overlying hydrate zone can supply a certain amount of gas to improve the output of a production well
and evidently prolong the lifespan of a gas reservoir.
Supported by the National High Technology Research and Development Program of China (Grant No. 2006AA09A209) and the National
Basic Research Program of China (Grant No. 2009CB219507) 相似文献
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通过重离子核反应^116Cd(^27Al,4n)与在束γ谱的实验技术,对A=130-140核区的奇A核139Pm的高自旋态进行了研究.根据γ-γ符合关系、γ射线的相对强度和各向异性度的测量结果,扩展并更新了^139Pm的能级纲图.实验观测到基于πh11/2和πg7/2 [πh11/2]^2(或者πd5/2 [πh11/2]^2)组态的转动带,利用已有的理论计算结果对这些转动带进行了解释.同时还观测到三个具有很强M1跃迁、旋称劈裂很小的△I=1的带.通过简单分析和系统学比较,指认了它们的组态,发现它们具备磁转动带的特性,很可能是磁转动带. 相似文献
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王海霞 张玉虎 周小红 柳敏良 丁兵 周厚兵 李广顺 OSHIMA M KOIZUMI M TOH Y KIMURA A HARADA H FURUTAKA K KITATANI F NAKAMURA S HATSUKAWA Y OHTA M HARA K KIN T 孟杰 《中国科学:物理学 力学 天文学》2012,(5):505-514
利用150Nd(28Si,5n)熔合蒸发反应居了173W的高旋态.于标准在束核谱学实验测量结果,扩展了于γ7/2+[633],γ5/2-[512]和γ1/2-[521]准组态的转动带.首次建了173W γ1/2-[521]转动带的能量非优先分支.发现γ5/2-[512]转动带在低旋区出现旋称反转.相似的旋称劈行为表明174Reπ1/2-[541]γ5/2-[512]转动带的旋称反转来位于5/2-[512]轨道的中.旋称反转制有待进一研究. 相似文献
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First mass measurement of short-lived nuclides at HIRFL-CSR 总被引:1,自引:0,他引:1
Xu HuShan Tu XiaoLin Yuan YouJin Xia JiaWen Zang YongDong Wang Meng Mao RuiShi Hu ZhengGuo Mei Bo Shuai Peng Zhu ZhiChao Tang ShuWen Geng Peng Liu Yong Zhao TieCheng Zhang XueYing Yang JianCheng Mao LiJun Zhang YuHu Zhou XiaoHong Huang WenXue Xiao GuoQing Zhao HongWei Zhan WenLong 《科学通报(英文版)》2009,54(24):4749-4752
Recent commissioning of the HIRFL-CSR has demonstrated its ability to perform direct mass measurement for short-lived nuclides. Projectile fragments produced by the 78Kr ions at 481.88 MeV/u were separated with the new radioactive beam line in Lanzhou (RIBLL2), and injected into and stored in the experimental storage ring (CSRe). By operating the CSRe as an isochronous mass spectrometry, a typical mass resolution around 2.0×10?5 has been achieved. The masses for 63Ge, 65As and 67Se were measured for the first time. The measured masses are compared with theoretical predictions and the location of the proton drip-line for As isotopes is discussed. The implication of the 65As mass in the astrophysical rapid proton capture process has also been addressed. 相似文献