The kinetics of the transesterification of phosphatidylcholine (PC) with α-linolenic acid ethyl ester (ALAEE) catalyzed by immobilized lipase in hexane was studied. The reaction proceeded via a Ping-Ping Bi-Bi mechanism without inhibition by both the substrates at various concentrations tested. A reaction kinetic model was proposed with the experimental data. The kinetic constants of the model ...

Jian-Song WU1,∗, Ying-Kai XIAO, Yu-Ping LIU, Wan-Bang XU, Mei-Fang LIANG, Jian CHENG, Jian-Ping WAN, Ling-Zhu CHEN School of Chemistry Science and Technology, Zhanjiang Normal College, 524048, Zhanjiang-CHINA e-mail: [email protected] Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, 810008, Xining-CHINA Guangdong Institute fo...

Department of Science and Environmental S Kong, 10 Lo Ping Road, Tai Po, Hong Kong Fax: +86 852 29487676; Tel: +86 852 29487 College of Chemistry and Chemical Engine China Centre for Education in Environmental Su Hong Kong, 10 Lo Ping Road, Tai Po, Hong Institute of Natural Medicine and Green Ch and Light Industry, Guangdong University China † Electronic supplementary informa 10.1039/c6sc05584b...

Ping-Chung Leung1,2* 1State Key Laboratory of Phytochemistry and Plant Resources in West China, The Chinese University of Hong Kong, Shatin, Hong Kong, China 2Institute of Chinese Medicine, The Chinese University of Hong Kong *Corresponding author: Ping Chung Leung, 5/F School of Public Health Building, Prince of Wales Hospital, Shatin, Hong Kong, Tel: (852) 2252 8868; Fax: (852) 2632 5441; E-m...

Germline-specific Piwi-interacting RNAs (piRNAs) protect animal genomes against transposons and are essential for fertility. piRNAs targeting active transposons are amplified by the ping-pong cycle, which couples Piwi endonucleolytic slicing of target RNAs to biogenesis of new piRNAs. Here, we describe the identification of a transient Amplifier complex that mediates biogenesis of secondary piR...

The standard “ping” utility provides a momentary measurement of round trip time. Sequences of ping events are used to gather longer-term statistics about jitter and packet loss in order to describe the quality of service of a network path. A more finegrained tool is needed to evaluate paths which carry interactive media streams for collaborative environments. Natural interaction depends on obta...

Re cently the Whitesail Lake map area (NTS 093E), im me di ately north and east of Bella Coola, BC has been the fo cus of re gional map ping pro grams, in clud ing the cur rent Geoscience BC funded map ping pro gram of Mahoney et al. (2006) and the map ping con ducted in 2004 un der the Rocks to Riches pro gram (Mahoney et al., 2005). The re gional map ping ex er cise dis cov ered a new oc cur ...

The study was conducted in order to investigate the immuno-enhancing property of the Chinese herbal formula, Gan lian Yu ping feng powder. Three hundred and thirty six 45-day-old chicks were randomly divided into eight groups. The chicks in groups A, B, C were orally given 0.25 g/mL (low-), 0.5 g/mL (middle-) and 1.0 g/mL (high) dose of Gan lian Yu ping feng powder in the drinking water respect...

Synchronous rhythmic spiking in neuronal networks can be brought about by the interaction between E-cells and Icells (excitatory and inhibitory cells). The I-cells gate and synchronize the E-cells, and the E-cells drive and synchronize the I-cells. We refer to rhythms generated in this way as PING (pyramidal-interneuronal gamma) rhythms. The PING mechanism requires that the drive I(I) to the I-...