A ctivation measurement of neutron distribution in intermediate energy heavy ion target area

The distribution of neutrons produced by the reaction of 50MeV/u ^12C-ion on a thick Cu target are studied.The neutrons are measured with threshold activation detectors.Al.F,C,Al and In activation samples were used to measure neutrons with energy greater than 7,11,20,50MeV and thermal neutrons,respectively,The fluence rate,energy and angular distributions of neutrons,total neutron yield of 12C-ion and the emission rate in the forward direction of neutrons over 11 and 20MeV were obtained.     

基于多幅图像的有效点扩散函数的高精度测量

将图像融合以及高精度测量方法应用于天文图像处理,对图片进行处理得到有效点扩散函数,并将有效点扩散函数拟合星像,得到星体的位置与光度信息．结果表明, 方向平均定位精度为0．036 pixel,Y方向平均定位精度为0．O44 pixel,平均测光精度达到0．032 magnitude,测量结果验证了该算法的有效性．     

α—Fe2O3气敏元件的可靠性环境试验

探讨了α－Ｆｅ２Ｏ３半导体气敏元件的可靠性环境试验方法，对该元件的可靠性环境试验结果进行了数据处理和统计分析；探讨了该元件的主要失效模式，运用不同的评定方法对元件的环境应力适应能力进行了定量估计。     

Invariant Deformation Element Model Interpretation to the Crystallography of Diffusional Body-Centered-Cube to Face-Centered-Cube Phase Transformations

The crystallography of body-centered-cube to face-centered cube (bcc-to-fcc) diffusion phase transformations in a duplex stainless steel and a Cu-Zn alloy, including long axis, orientation relationship (OR), habit plane (HP), and dislocation spacing, is successfully interpreted with one-step rotation from the Bain lattice relationship by applying a simplified invariant line (IL) analysis. It is proposed that the dislocation slipping direction in the matrix plays an important role in controlling the crystallography of precipitation.     

Thermodynamic Study on the Rare Earth Vapour Complex PrAl_3Cl_(12)

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Ultrasensitive aptamer-based multiplexed electrochemical detection by coupling distinguishable signal tags with catalytic recycling of DNase I

This work reports an aptamer-based, disposable, and multiplexed sensing platform for simultaneous electrochemical determination of small molecules, employing adenosine triphosphate (ATP) and cocaine as the model target analytes. The multiplexed sensing strategy is based on target-induced release of distinguishable redox tag-conjugated aptamers from a magnetic graphene platform. The electronic signal of the aptasensors could be further amplified by coupling DNase I with catalytic recycling of self-produced reactants. The assay was based on the change in the current at the various peak potentials in the presence of the corresponding signal tags. Experimental results revealed that the multiplexed electrochemical aptasensor enabled the simultaneous monitoring of ATP and cocaine in a single run with wide working ranges and low detection limits (LODs: 0.1 pM for ATP and 1.5 pM for cocaine). This concept offers promise for rapid, simple, and cost-effective analysis of biological samples.     

氨基磷酸树脂负载镧化合物杂化吸附剂的制备与性能

制备了水合氧化镧(LaH)并将水合氧化镧负载于氨基磷酸树脂(APAR)上制得杂化吸附剂LaH-APAR,用红外光谱(FT-IR)、热重(TGA)对LaH-APAR的结构和热学性能进行了测试,并研究了pH值、温度对LaH及LaH-APAR吸附氟离子性能的影响。结果表明,La3+与APAR以配位键结合,LaH-APAR吸附剂在300℃以下比较稳定,它与LaH吸附性能基本相同,受pH值影响不大,可以在较宽的pH范围内使用;在pH不变的情况下,LaH-APAR随着温度的升高吸附速率也相应提高,属于温度控制吸附,且为化学吸附。