[en] Objective: To explore the possibility of ^99mTc-gelatin acting as imaging reagent for glomerular filtration. Methods: ^99mTc-gelatin was prepared by using ⁹⁹Mo-^99mTc generator. Rate of Radioactive uptake and radiocounting of ^99mTc-gelatin were detected in heart, liver, lung, spleen, kidney and stomach of mice. Results: High uptake rate and long holding period of ^99mTc-gelatin were discovered in kidney, but the removal in blood was very fast. Conclusion: ^99mTc-gelatin was hopeful to be a kind of imaging reagent of glomerular filtration. (authors)

[en] By using the Faddeev—Senjanovic path integral quantization method, we quantize the composite fermions in quantum electrodynamics (QED). In the sense of Dirac's conjecture, we deduce all the constraints and give Dirac's gauge transformations (DGT). According to that the effective action is invariant under the DGT, we obtain the Noether theorem at the quantum level, which shows the fractional charges for the composite fermions in QED. This result is better than the one deduced from the equations of motion for the statistical potentials, because this result contains both odd and even fractional numbers. Furthermore, we deduce the Noether theorem from the invariance of the effective action under the rotational transformations in 2-dimensional (x, y) plane. The result shows that the composite fermions have fractional spins and fractional statistics. These anomalous properties are given by the constraints for the statistical gauge potential. (general)

[en] Highlights: • For an electron confined on a thin film reconstructed by dual-frequency corrugation, the depth of the attractive wells determined by geometric potential is extremely affected by the multiple frequency number n of the composite corrugation. • The grade number of Dirac combs constructed by the geometric potential is determined by the multiple frequency number n. In different grades, the attractive wells have different depths. • In the discussed model, transmission gaps and resonant tunneling domains emerge from the corrugations. More specifically, the transmission gaps are extremely widened and the resonant tunneling domains are substantially sharpened by increasing the multiple frequency number n. • These results can be briefed as 1) A thin film reconstructed by a composite corrugation; 2) Transmission gaps reshaped by the composite corrugation; 3) Curvature-tunable electronic switch. -- Abstract: For an electron confined to a surface reconstructed by double-frequency corrugations, we give the effective Hamiltonian by the formula of geometric influences, obtain an additive scalar potential induced by curvature that consists of attractive wells with different depth. The difference is generated by the multiple frequency of the double-frequency corrugation. Subsequently, we investigate the effects of geometric potential on the transmission probability, and find the resonant tunneling peaks becoming rapidly sharper and the transmission gaps being substantially widened with increasing the multiple frequency. As a potential application, double-frequency corrugations can be employed to select electrons with particular incident energy, as an electronic switch, which are more effective than a single-frequency ones.