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Abstract  

Two new BATO complexes99mTcC1 (dmg)3BC6H4CH3 (Cholor[bis {2,3-butanedionedioxime(1-)-O} {2,3-butanedionedioximato (2-)-N,N',N",N'",N"",N""'} (m-tolueneborato) technetium]) and99m TcCl (4-MCDO)3MeB, ([bis{4-methyl-1,2-cyclohexanedioximato (1-)-O} {4-methyl-cyclohexane-1, 2-dione-dioximato (2-)-O} {methyl-borato (2-)-N,N', N", N'", N"", N""'} chlorotechnetium]), generally called BATO (Boronic Acid Adducts of Technetium Dioximes, had been synthesized and evaluated for potential use in brain and myocardial perfusion imaging. Their labeling conditions were also investigated. In their biodistribution studyies they showed higher radiochemical stability and rapid brain uptake and myocardial uptake in mice. After i.v administration, the first complex had 0.87%ID in the brain and 1.02% ID in the heart at 2 min and it had a longer retention in brain (0.62%ID was maintained at 15 min postinection) but rapidly cleared from heart (0.33%ID postinjection). For the second complex, it showed very rapid blood clearance. The uptake of heart, lung and blood in mice at 2 min respectively were: 1.32%ID, 2.48%ID and 6.66%ID. These two complexes formation were 2rapid, simple and of high yield(91%). The processes were easy to kit formulation.

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Abstract  

This article is dedicated to develop an experimental approach for directly visualizing the global freezing phase change behavior of micro liquid droplets. The infrared (IR) thermograph was proposed to image the basic solidification phenomena of droplet and to acquire its temperature variations during the transient process. In particular, the volumetric recalescence event, regarded as initiation of freezing, was revealed by IR images for the first time. Preliminary results demonstrated that the involved temperature transition due to release of the latent heat can be accurately characterized by evident color break in IR images. Further, experiments were also performed simultaneously on three kinds of droplets made of pure water, dimethylsulfoxide (DMSO) and nano liquid to grasp more precise temporal and spatial temperature distribution. Types of the occurring solidification and the initial frozen volume produced from the recalescence were generally discussed. The IR monitoring method suggests a straightforward way for detecting the freezing phase change activity and its temperature evolution at micro scale.

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In this paper, by using topological degree theory and some analysis skill, we consider the periodic solutions for the dissipative neutral differential systems with singular potential and p -Laplacian: ( ϕ p ( x ′( t ) − μx ′( tτ 1 )))′ +
\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{bbm} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$\tfrac{d} {{dt}}$$ \end{document}
grad G ( x ( tτ 2 )) = e ( t ). Sufficient conditions to guarantee the existence of periodic solution for the systems are obtained under having no restriction on the damping forces
\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{bbm} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$\tfrac{d} {{dt}}$$ \end{document}
grad F ( x ).
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In this paper we give a weak classification of locally linear pseudofree actions of the cyclic group of order 3 on an elliptic surface E (4), and prove the existence of such actions which can not be realized as smooth actions on the standard smooth E (4).

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Abstract  

Weak atomic decompositions of B-valued martingales with two-parameters in weak Hardy spaces w p Σα and w p H α are established and the boundedness of sublinear operators on these spaces are proved. By using them, some characterizations of the smoothness of Banach spaces are obtained.

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Summary The Institute of Higher Education, Shanghai Jiao Tong University published on the web the Academic Ranking of World Universities and attracted wide attentions worldwide. 60% of their criteria are based on the databases using scientometrics. They were aware of all possible technical problems, have gone through “clean up” processes and made necessary corrections. Highly cited researchers and articles published in Nature and Science were identified one by one and attributed to the correct institutions. They are confident that errors including human ones in their data are less than two percent. They will continue their ranking efforts, improve their ranking methodologies and provide more choices on the ranking lists.

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Abstract  

Cross-sections for (n,2n), (n,p), (n,α), and (n,d*) (The expression (n,d*) cross section used in this work includes a sum of (n, d), (n, np) and (n, pn) cross sections) reactions have been measured on erbium isotopes at the neutron energies from 13.5 to 14.8 MeV using the activation technique in combination with high-resolution gamma-ray spectroscopy. Data are reported for the following reactions: 162Er(n,2n)161Er, 164Er(n,2n)163Er, 168Er(n,α)165mDy, 166Er(n,p)166gHo, 170Er(n,α)167Dy, 168Er(n,p)168m+gHo, 170Er(n,p)170gHo, and 170Er(n,d*)169Ho. The cross sections were discussed and compared with experimental data found in the literature, and with the comprehensive evaluation data in ENDF/B-VII.0 and l JEFF-3.1/A libraries.

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Abstract  

The energy-loss straggling for low-energetic 16O ion in Co, Ni and Lu was measured. The obtained results were compared with various theoretical predictions. The variance of foil thickness was measured by different methods and the target quality was discussed.

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Journal of Radioanalytical and Nuclear Chemistry
Authors:
Li Yu-guo
,
Huang Xuan
,
Liu Riu-li
,
Li Qing-nuan
,
Zhang Xiao-dong
, and
Li Wen-xin

Summary  

The water-soluble fullerene derivative C60(OH)x was radiolabeled with 67GaCl3. The labeling yields were determined by radio-PLC. The effects of pH, reaction time, temperature and the amount of C60(OH)x on the labeling yields were studied. The stability of 67Ga-C60(OH)x was also examined. The results showed that the labeling yields could reach 97% under the best labeling conditions and the radiochemical purity of 67Ga-C60(OH)x solution kept at 37 °C remained at 88% after 212 hours. The biodistribution studies of 67Ga-C60(OH)x in mice showed a high localization of 67Ga-C60(OH)x in the bone marrow, bone, liver and spleen with slow clearance and a negligible accumulation in the blood. These data suggest that the water-soluble C60(OH)x, having the same properties as microcolloids, may be used as a carrier of drug system for lymphatic targeting.

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Abstract  

Two marine sediment cores were collected from nearshore off Xinghua Bay mouth in Fujian, China and the 40K, 137Cs, 210Pb, 226Ra, 228Ra, 228Th and 238U in the cores were measured using γ-spectroscopy. For the core ZK6, the activities of 40K were vertically homogeneous within measured error in the whole core and 226Ra, 228Ra and 228Th showed large vertical variations with the same tendency. The sedimentation rates were 0.400 cm·y−1 above 50 cm and 0.737 cm·y−1 below depth of 50 cm. The change of sedimentation rates indicates the heterotaxy, which was justified by the absence of 137Cs in the zone of 25–50 cm. For core ZK6, the sedimentation rate was 0.179 cm·y−1. Vertical distributions of 40K, 226Ra, 228Ra, 228Th and 238U in the core ZK18 are similar to each other although there were significant large variations with depth. The large variations of radioisotopes with depth in the cores mean that the sediment cores have been disturbed largely due to marine environment change. The mean activities of radioisotopes in the core ZK6 are higher than ZK18 that may be ascribed to different hydrodynamic environments.

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