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.

Arithmetic properties of bipartitions with even parts distinct

Abstract: In this work, we consider various arithmetic properties of the function ped−2(n) that denotes the number of bipartitions of n with even parts distinct. We prove two infinite families of congruences for p−2(n) modulo 3. We also give characterizations of ped−2(n) modulo 2 and 4. Furthermore, for a fixed positive integer k, we show that ped−2(n) is divisible by 2k for almost all n.

Purification and characterization of two novel angiotensin I-converting enzyme inhibitory peptides derived from R-phycoerythrin of red algae ( Bangia fusco - purpurea )

Abstract: R-phycoerythrin prepared from red algae (Bangia fusco-purpurea) was hydrolyzed by pepsin followed by trypsin to produce angiotensin I-converting enzyme (ACE) inhibitory peptides. The IC50 of the hydrolysate of R-phycoerythrin (HRPE) was 191.1 ± 4.1 μg/mL, and the molecular weight of most products (89.9 %) was below 2 kDa. After sequential gel permeation and reversed-phase chromatography steps to purify the hydrolysate, two peptides with the sequences of ALLAGDPSVLEDR and VVGGTGPVDEWGIAGAR were obtained and their IC50 values were 57.2 ± 5.0 and 66.2 ± 4.2 μg/mL, respectively. The ALLAGDPSVLEDR and VVGGTGPVDEWGIAGAR peptides were derived from the β- and α-subunit of R-phycoerythrin from Polysiphonia urceolata, with a 92.3 % (12/13) and 94.1 % (16/17) match, respectively. Both peptides were resistant to digestion by proteinases common in the gastrointestinal tract. Therefore, the identified novel peptides derived from R-phycoerythrin may be used as potential nutraceuticals for development of functional foods.

Liquidity, Skewness and Stock Returns: Evidence from Chinese Stock Market

Abstract: In this paper, a capital asset pricing model (CAPM) incorporating liquidity and skewness factors is proposed and tested by using the Chinese stock market data. The empirical results indicate that, under various market conditions, the liquidity-adjusted three-moment CAPM provides a better fit to the realized returns of various stock portfolios. Overall, this research reveals that illiquidity cost, liquidity risk and as well as skewness have important impacts on asset pricing in the Chinese stock market.

Real-time loop-mediated isothermal amplification for rapid detection of Enterocytozoon hepatopenaei.

Abstract: Background Enterocytozoon hepatopenaei (EHP) is a newly emerged microsporidian parasite that causes retarded shrimp growth in many countries. But there are no effective approaches to control this disease to date. The EHP could be an immune risk factor for increased dissemination of other diseases. Further, EHP infection involves the absence of obvious clinical signs and it is difficult to identify the pathogen through visual examination, increasing the risk of disease dissemination. It is urgent and necessary to develop a specific, rapid and sensitive EHP-infected shrimp diagnostic method to detect this parasite. In the present study, we developed and evaluated a rapid real-time loop-mediated isothermal amplification (real-time LAMP) for detection of EHP. Methods A rapid and efficient real-time LAMP method for the detection of EHP has been developed. Newly emerged EHP pathogens in China were collected and used as the sample, and three sets of specificity and sensitivity primers were designed. Three other aquatic pathogens were used as templates to test the specificity of the real-time LAMP assay. Also, we compared the real-time LAMP with the conventional LAMP by the serial dilutions of EHP DNA and their amplification curves. Application of real-time LAMP was carried out with clinical samples. Results Positive products were amplified only from EHP, but not from other tested species, EHP was detected from the clinical samples, suggesting a high specificity of this method. The final results of this assay were available within less than 45 min, and the initial amplification curve was observed at about 6 min. We found that the amplification with an exponential of sixfold dilutions of EHP DNA demonstrated a specific positive signal by the real-time LAMP, but not for the LAMP amplicons from the visual inspection. The real-time LAMP amplification curves demonstrated a higher slope than the conventional LAMP. Discussion In this study, pathogen virulence impacts have been increased in aquaculture and continuous observation was predominantly focused on EHP. The present study confirmed that the real-time LAMP assay is a promising and convenient method for the rapid identification of EHP in less time and cost. Its application greatly aids in the detection, surveillance, and prevention of EHP.