778 research outputs found
The role of environmental factors in the spatial distribution of Japanese encephalitis in mainland China
No full textAbstract not availableLiya Wang, Wenbiao Hu, Ricardo J. Soares Magalhaes, Peng Bi, Fan Ding, Hailong Sun, Shenlong Li, Wenwu Yin, Lan Wei, Qiyong Liu, Ubydul Haque, Yansong Sun, Liuyu Huang, Shilu Tong, Archie C.A. Clements, Wenyi Zhang, Chengyi L
sj-pdf-1-pie-10.1177_09544089221149824 - Supplemental material for Application of state parameter learning for fault diagnosis on the large reciprocating compressor
No full textSupplemental material, sj-pdf-1-pie-10.1177_09544089221149824 for Application of state parameter learning for fault diagnosis on the large reciprocating compressor by Xiaoran Li, Tianshuo Guo, Weifeng Wu, Chengyi Li, Jie Li and Zhongqing Zhu in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Energy storage in Chlamydomonas reinhardtii measured with photoacoustic techniques
No full textThe energy storage efficiencies of the reaction centers in the intact cells of Chlamydomonas reinhardtii wild type cell, PSI-less mutants and PSII-less mutants in microsecond time window were determined using pulsed, time-resolved photoacoustic techniques. The heat emission from the photochemical reaction can result in the positive thermal expansion photoacoustic signal, opposing the negative thylokoid volume contraction signal caused by electrostriction during the charge separation. In this present research, we observed that PSI differed strongly from PSII, both in thermal expansion and volume contraction. Similar to the bacterial reaction centre, PSI is marked with the large volume contraction but small thermal expansion, in contrast to the large thermal expansion but small volume contraction in PSII. For wild type, the volume contraction signal is dominant over the thermal expansion signal upon low pulse energy illumination at room temperature. In microsecond time scale, the energy storage efficiencies were estimated to be 36%, 80±5%, and 50±14% per trap in wild type, PSI and PSII, respectively. The different energy conversion efficiencies are probably attributed to the escape of the bound counterions from the particle surface in PSI and rapid electron transfer in PSII. In the present work, we conducted the photoacoustic experiments to study the energy storage in different photosystem with the intact cells of PSI-less and PSII-less mutants, instead of using either specific wavelength excitation light or PSII inhibitors (e. g. DCMU), which were commonly applied in the previous studies. We also proved photoacoustic techniques’ usefulness and convenience in the photosynthesis research, especially in electron transfer and some related thermodynamics studies.M.S.Includes bibliographical references (p. 22-27)by Chengyi Ya
sj-docx-1-pie-10.1177_09544089231163377 - Supplemental material for Fault diagnosis of reciprocating compressor based on the prediction of comprehensive index extracted from the expansion process in indicator diagram
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231163377 for Fault diagnosis of reciprocating compressor based on the prediction of comprehensive index extracted from the expansion process in indicator diagram by Weifeng Wu, Chengyi Li, Jing Zhang, Yin Zhang, Xiaoran Li, Yifan Yang, Zhongqing Zhu and Bingsheng Wang in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Editorial: Physical exercise and brain health: functional mediators and therapeutic targets focusing on neuroendocrinology
No full textSINE jumping contributes to large-scale polymorphisms in the pig genomes
No full textAbstract Background Molecular markers based on retrotransposon insertion polymorphisms (RIPs) have been developed and are widely used in plants and animals. Short interspersed nuclear elements (SINEs) exert wide impacts on gene activity and even on phenotypes. However, SINE RIP profiles in livestock remain largely unknown, and not be revealed in pigs. Results Our data revealed that SINEA1 displayed the most polymorphic insertions (22.5 % intragenic and 26.5 % intergenic), followed by SINEA2 (10.5 % intragenic and 9 % intergenic) and SINEA3 (12.5 % intragenic and 5.0 % intergenic). We developed a genome-wide SINE RIP mining protocol and obtained a large number of SINE RIPs (36,284), with over 80 % accuracy and an even distribution in chromosomes (14.5/Mb), and 74.34 % of SINE RIPs generated by SINEA1 element. Over 65 % of pig SINE RIPs overlap with genes, most of them (> 95 %) are in introns. Overall, about one forth (23.09 %) of the total genes contain SINE RIPs. Significant biases of SINE RIPs in the transcripts of protein coding genes were observed. Nearly half of the RIPs are common in these pig breeds. Sixteen SINE RIPs were applied for population genetic analysis in 23 pig breeds, the phylogeny tree and cluster analysis were generally consistent with the geographical distributions of native pig breeds in China. Conclusions Our analysis revealed that SINEA1–3 elements, particularly SINEA1, are high polymorphic across different pig breeds, and generate large-scale structural variations in the pig genomes. And over 35,000 SINE RIP markers were obtained. These data indicate that young SINE elements play important roles in creating new genetic variations and shaping the evolution of pig genome, and also provide strong evidences to support the great potential of SINE RIPs as genetic markers, which can be used for population genetic analysis and quantitative trait locus (QTL) mapping in pig
High performance Li–CO<sub>2</sub> batteries with NiO–CNT cathodes
No full textA NiO/CNT composite was prepared by a solvothermal method. The composite was used as the air cathode for Li–CO2 batteries, and displayed great stability and high catalytic activity.</p
Analysis of impact factors on scrubland soil respiration in the southern Gurbantunggut Desert, central Asia
No full textMonitoring soil CO2 respiration with chamber measurements and identifying controlling factors such as the diversity of vegetation species, moisture and temperature can help guide desert scrubland management. Soil CO2 respiration and potential controlling factors at four sites in desert scrubland were examined along the Sangong River Basin (SRB) in northwestern China in 2004. Soil CO2 respiration descended along the SRB as did the diversity of vegetation species, air temperature and air humidity. The two sites of the field station (FS) and the north desert (ND) and the low reaches of the SRB among these locations were monitored to analyze the effects of pH value, soil organic carbon (SOC), total nitrogen (TN) and calcium carbonate (CaCO3) on soil CO2 respiration during the growing season in 2005. The ND site was located at the southern edge of the Gurbantunggut Desert; the FS site was in the border area of the SRB Alluvial Fan. One-way ANOVA was performed. The result showed that air humidity and CaCO3 content had a strong influence on soil CO2 respiration; SOC content was a limitation to soil CO2 respiration in the arid-desert zone. Effective management activities can attenuate soil CO2 respiration and keep carbon balance trends at a desirabe level in desert scrublands
Polymer Inclusion Membranes with P507-TBP Carriers for Lithium Extraction from Brines
No full textThe separation of lithium and magnesium from salt-lake brines with high Mg2+/Li+ ratios is a main challenge for lithium extraction. In this work, novel polymer inclusion membranes (PIMs) were developed by incorporating 2-ethylhexyl phosphonic acid mono 2-ethylhexyl (P507) and tributyl phosphate (TBP) as the carriers into cellulose triacetate (CTA) polymers. The Li+ could be stripped from the P507-TBP extracting carriers using pure water eluents without adding concentrated hydrochloric acid, which can help decrease carriers’ leakage risk from membrane matrixes and keep the stability of PIMs. The morphology, composition, and wettability of P507-TBP-based PIMs were characterized systematically, and the carrier content in the PIM was also optimized. In the transport experiment with the feed of 0.1 mol/L LiCl and 4.0 mol/L MgCl2, the CTA/P507-TBP60% membrane exhibits a Li+ permeability of 4.76 × 10−3 mol·m−2·h−1 and a Li/Mg separation ratio of 10.2. After recycling seven times, the selectivity of the PIM is well-retained (>10), and the permeability of Li+ decreases slightly (less than 15%). With a decent selectivity and excellent stability, PIMs containing P507-TBP carriers show great potential for sustainable and efficient lithium recovery from brines with high Mg/Li ratios
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