Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

The realization of long focal depth with a linear varied-area zone plate

Abstract: We report a linear varied-area zone plate, in which arbitrary long focal depth can be achieved by properly adjusting the corresponding parameters. Meanwhile, the lateral focal spot and side lobes can be kept very small. Numeral simulations are carried out to verify the performance of our zone plate through Fresnel–Kirchhoff diffraction theory, and the results are in good accord with the experimental verifications. The influences of our zone plate’s parameters to the intensity distribution in focal region are discussed in detail. Comparisons are made with the behaviour of a linear varied-line-space grating, and we find that the behaviour of our novel zone plate along optical axis is just like a reverse transformation of the focusing behaviour of a linear varied-line-space grating.

Statistical analysis of fatalities in underground coal mines in Pakistan

Abstract: The coal mining, being highly susceptible to accidents and fatalities, is considered amongst the most dangerous occupations. Historically, Pakistan has faced an alarmingly high rate of coal mine di...

Looking for new physics via semi-leptonic and leptonic rare decays of D and D s

Abstract: It is well recognized that looking for new physics at lower energy colliders is a path which is complementary to high energy machines such as the LHC. Using the large volume of data collected by BESIII, we may have a unique opportunity to tackle this. In this paper we calculate the branching ratios of the semi-leptonic processes and , and the leptonic processes D(0)→e(−)e(+) and D(0)→e(−)μ(+), in the frameworks of the U(1)′ model, 2HDM and unparticle model. It is found that both the U(1)′ model and 2HDM may influence the semi-leptonic decay rates, but only the U(1)′ model offers substantial contributions to the pure leptonic decays, and the resultant branching ratio of D(0)→e(−)μ(+) can be as large as 10(−)(7)∼10(−)(8). This might be observed at the future super τ-charm factory.

Positive solutions to the singular p-Laplacian BVPs with sign-changing nonlinearities and higher-order derivatives in Banach spaces on time scales

Abstract: . In this paper, in order to establish the existence criteria for positive solutions of a multiple-point Dirichlet-Robin BVPs in Banach spaces on time scales, first we prove a fixed point theorem on monotone operators and the Ascoli-Arzela’s theorem on time scales. Then using the monotone operator method, we explore the existence criteria of positive solutions for a general multiple-point Dirichlet-Robin BVPs in Banach spaces on time scales with the singular sign-changing nonlinearities and higher-order derivatives. Finally an example is illustrated to indicate the application of our main results, which generalize some well-known results in the literature.