Jimei University

About: Jimei University is a education organization based out in Amoy, China. It is known for research contribution in the topics: Computer science & Population. The organization has 4645 authors who have published 4293 publications receiving 42239 citations. The organization is also known as: Jíměi Dàxué.

Identification of a myofibril-bound serine proteinase in the skeletal muscle of silver carp

Abstract: Myofibril-bound serine proteinase (MBSP) in the skeletal muscle of silver carp was characterized. Myosin heavy chain (MHC) degraded markedly when silver carp myofibril was incubated at 55-60C as shown by SDS-PAGE. Prolonged incubation of myofibrils also caused the degradation of other myofibrillar proteins such as α-actinin, actin and tropomyosin to some degree. The results suggest the existence of an endogenous myofibril associated proteinase. Serine proteinase inhibitors (Pefabloc SC and Lima bean trypsin inhibitor) greatly suppressed the degradation of myosin heavy chain, while inhibitors for cysteine, metallo, and aspartic proteinases did not show any effect, indicating that the endogeneous proteinase is a myofibril-bound serine proteinase.

Assessment of the Resilience of a Complex Network for Crude Oil Transportation on the Maritime Silk Road

Abstract: As one of the most strategically important natural resources, crude oil can be dangerous to transport by sea. The resilience of a maritime transport network denotes the ability of the system to withstand damage and remain operational after disturbances, representing the invulnerability of the network and its ability to recover from harm. In this study, we built a crude oil transportation network titled the Maritime Silk Road using Automatic Identification System (AIS) sensor data, designed a resilience assessment framework based on complex network theory, and assessed the resilience of the maritime crude oil transportation network from both qualitative and quantitative perspectives with the help of complex network metrics and a resilience model. The results show that the topology of the crude oil transportation network has a significant impact on its resilience, in that network density and centrality are negatively related to network resilience, whereas network connectivity and size are positively related to resilience. Subsequently, the resilience of crude oil transportation networks declines at a steady rate under random attacks but declines sharply under intentional attacks. Finally, a comprehensive analysis of invulnerability and recovery in the context of resilience concludes that strengthening small and medium-sized ports in the network is important to enhance network resilience. These results can provide reference and decision support for port planning, route design, optimization, and form a foundation for a more secure and reliable maritime transportation network system.

Cloning, expression, and characterization of carbonic anhydrase genes from Pyropia haitanensis (Bangiales, Rhodophyta)

Abstract: Carbonic anhydrases (CAs) play important roles in the utilization of inorganic carbon and have been studied in many higher plants and algae. Herein, based on unigene sequences from Pyropia haitanensis, six full-length CA of P. haitanensis (PhCA) genes were obtained by rapid amplification of complementary DNA (cDNA) ends, or by direct polymerase chain reaction (PCR), and named PhαCA1, PhαCA2, PhβCA1, PhβCA2, PhβCA3, and PhγCA1. The full-length cDNAs of the six PhCA genes comprised 1156, 1151, 1146, 847, 1124, and 1013 nucleotides, respectively. The encoded proteins were 275, 287, 206, 245, 307, and 290 amino acids, with isoelectric points of 10.26, 5.40, 6.03, 6.42, 7.66, and 4.75, respectively. On the basis of conserved motifs and phylogenetic tree analysis, the PhCAs were divided into three CA classes: PhαCA1 and PhαCA2 are α-CAs; PhβCA1, PhβCA2, and PhβCA3 are β-CAs; and PhγCA1 is a γ-CA. In different CO2 concentrations, the expression levels of PhβCA2, PhβCA3, and PhγCA1 showed no significant changes; however, the expression levels of PhαCA1, PhαCA2, and PhβCA1 decreased significantly under high CO2. The expression level of each PhβCA gene was significantly higher in the sporophytes than in the gametophytes; however, the expression levels of PhαCA and PhγCA in the sporophytes were significantly lower than those in the gametophytes. The expression level of each PhCA under desiccation and high-temperature stress had a different pattern. These results suggested that PhCAs play important roles in the utilization of inorganic carbon of P. haitanensis. Additionally, the expressions of PhCAs were significantly affected by environmental stresses.

A conservative difference scheme for conservative differential equation with periodic boundary

Abstract: The conservative form and singular perturbed ordinary differential equation with periodic boundary value problem were studied, and a conservative difference scheme was constructed. Using the method of decomposing the singular term from its solution and combining an asymptotic expansion of the equation, it is proved that the scheme converges uniformly to the solution of differential equation with order one.