Synchronous control of dual-channel all-optical multi-state switching

We have experimentally observed optical multistabilities (OMs) simultaneously on both the signal and generated Stokes fields in an optical ring cavity with a coherently-prepared multilevel atomic medium. The two observed OMs, which are governed by different physical processes, are coupled via the multilevel atomic medium and exhibit similar threshold behaviors. By modulating the cavity input (signal) field with positive or negative pulses, dual-channel all-optical multi-state switching has been realized and synchronously controlled, which can be useful for increasing communication and computation capacities

Throughput capacity of two-hop relay MANETs under finite buffers

Since the seminal work of Grossglauser and Tse [1], the two-hop relay algorithm and its variants have been attractive for mobile ad hoc networks (MANETs) due to their simplicity and efficiency. However, most literature assumed an infinite buffer size for each node, which is obviously not applicable to a realistic MANET. In this paper, we focus on the exact throughput capacity study of two-hop relay MANETs under the practical finite relay buffer scenario. The arrival process and departure process of the relay queue are fully characterized, and an ergodic Markov chain-based framework is also provided. With this framework, we obtain the limiting distribution of the relay queue and derive the throughput capacity under any relay buffer size. Extensive simulation results are provided to validate our theoretical framework and explore the relationship among the throughput capacity, the relay buffer size and the number of nodes

Effect of RuanGanJieDu decoction inhibit experimental hepatic fibrosis of rats

Background: RuanGanJieDu (RGJD) is a traditional Chinese medicine comprising nine Chinese medicinal herbs. The clinical use of RGJD by us was found that it has a good control effect on hepatic fibrosis (HF) patient. In order to further investigate the Anti-fibrosis mechanism of RGJD, hence this experiment has been carried out.Methods: After treatment, the general conditions of rats in each group were observed. The liver tissues morphology and HF phases were observed under light microscope. The weights of livers and spleens were recorded; the indices of liver and spleen were calculated. The α-SMA and E-cadherin of the liver tissues were determined by Immunohistochemistry, and the contents of ALT、AST and PCIII＋PCIV＋HA＋LN in rat serum were detected by ELISA.Results: After treatment, the rats in model group presented with abdominal distention and rough hair, lethargy and mental sluggishness, slow movement and irritability; Most rats in RGJD group and colchicine(Col) group were in good spirits and no obvious abnormal motion state. The RGJD had shown significant effects in improving the liver tissue morphology. The HF phases of RGJD group and Col group mainly distributed in the S1-S2 phases, were finer than the model group in the S3 phase (P<0.05). The wet weights and indices of livers and spleens in RGJD group were lower than the control groups (P<0.05). Moreover, the expressions of E-cadherin, α-SMA and the serum levels of AST, ALT and PCIII＋PCIV in RGJD group were obviously decreased than the control groups except HA and LN (P<0.05).Conclusion: RGJD can improve the liver tissue morphology and reduce serum biochemical and collagen indices of HF, which proved a better curative effect of Chinese medicine than Col on HF and improving liver function.Keywords: RuanGanJieDu Decoction, hepatic fibrosis, α-SMA,E-cadherin, colchicin

Improved O(N) neighbor list method using domain decomposition and data sorting

The conventional Verlet table neighbor list algorithm is improved to reduce the number of unnecessary inter-atomic distance calculations in molecular simulations involving large amount of atoms. Both of the serial and parallelized performance of molecular dynamics simulation are evaluated using the new algorithm and compared with those using the conventional Verlet table and cell-linked list algorithm. Results show that the new algorithm significantly improved the performance of molecular dynamics simulation compared with conventional neighbor list maintaining and utilizing algorithms in serial programs as well as parallelized programs.Singapore-MIT Alliance (SMA