Search

旨在为大豆低温粕产品质量的提高及生产成本的降低提供指导，对当前两种典型的大豆粕低温脱溶工艺（气流闪蒸脱溶和AB双筒脱溶）分别进行了详细介绍，从低温粕水溶性蛋白的损失、碎料的形成、粕料色泽、设备的正常运行及维护周期、溶剂消耗和蒸汽消耗等方面对两种大豆粕低温脱溶工艺进行对比分析。相较于气流闪蒸脱溶工艺，AB双筒脱溶过程中水溶性蛋白的损失更低、粕料成型度更好、粕料色泽变化更小，有效地减轻了设备堵塞、磨损现象，延长了设备使用周期，减少了系统维护、检修费用，同时也间接地节省了溶剂和蒸汽消耗。综上，可优先选择AB双筒脱溶工艺对大豆粕进行低温脱溶处理。To provide guidance for improving the quality of soybean white flake and reduce production cost, the current typical two soybean meals low temperature desolventizing processes, namely air flow flash desolventizing and tank AB double-cylinder desolventizing process were introduced in detail, and the two soybean meals low temperature desolventizing processes were compared from the loss of water-soluble protein in soybean white flake, the formation of crushed material, the color of meal, the normal operation of the equipment and the maintenance cycle, the solvent consumption and steam consumption, etc. Compared with air flow flash desolventizing process, tank AB double-cylinder desolventizing process has lower water-soluble protein loss, better meal forming, smaller meal material color change, and can effectively reduce the equipment blockage, wear phenomenon, extend the equipment usage cycle, reduce the system maintenance, examine and repair costs, indirectly save the solvent and steam consumption. In conclusion, the tank AB double-cylinder desolventizing process can be preferred for the low temperature desolventizing treatment of soybean meals.

第5代移动通信技术（5G）前传是承载网络的重要组成部分，高精度时间同步以及海量连接的需求对接入网有了更高的要求。为了解决前传哑资源管理及光纤资源问题，中国移动提出了中等波分复用（MWDM）前传方案。针对MWDM方案的需求和5G前传推行需要降低成本的问题，文章提出了一款应用于MWDM光模块的25 Gbit/s光发射组件（TOSA），采用低成本的同轴气密封装，并内置半导体制冷器来支持室外场景的严苛条件。文章主要介绍了TOSA的关键设计和封装形式，并从设计和工艺上对其控温能力进行了优化，最后对样品的光电性能、控温能力以及传输性能进行了测试。测试结果表明，器件性能优良，且满足SFP28封装形式和IEEE 802.3协议标准。

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Metal Working (1674-165X) is the property of Metal Working Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mechanical & Electrical Engineering is the property of Mechanical & Electrical Engineering Magazine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Mechanical Engineering is the property of Editorial Board of China Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Steel Pipe is the property of Steel Pipe Magazine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of China University of Petroleum is the property of China University of Petroleum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】The study aimed to reveal the distribution preference pattern of simple sequence repeats (SSR) in Oryza sativa ssp.japonica genome.【Method】Using bioinformatics methods, a genome-wide analysis was performed to analyze the distribution regularities of SSRs among the 5′-flanking regions, the 3′-flanking regions, the extron regions and the intron regions in gene locus.【Result】The relative frequency (a ratio of the frequency of a type of SSR in a certain genomic region by the frequency of this SSR in whole genome) of SSRs decreased with increasing of the distance of 5′-flanking regions from start codon, and was more than 1.50 obviously in a range from about 1 bp to 500 bp. However, the relative frequency of SSRs was slightly larger than 1.00 in both extron regions and 3′-flanking regions while the relative frequency of SSRs was less than 1.00 obviously in intron regions. Furthermore, in 5′-flanking regions, 3 SSR types, including CCG, AGG and AG, showed the highest frequency and the relative frequency of each of them was more than 1.50 in a distance ranges of 1-200, 1-400 and 1-600 bp, respectively; In 3′-flanking regions, 4 SSR types, including A, ATCG, AAG and AATT, possessed both a high frequency and a high relative frequency in a near range from coding regions, and showed various ranges with a relative frequency greater than 1.50; In the extron regions, most of SSRs belonged to triplet SSR type and among them, 5 types with a high C/G contents, including CCG, AGG, ACG, AGC and ACC, showed both a high frequency and a high relative frequency; In intron regions, it was found that A had both a high frequency and a relative frequency.【Conclusion】SSRs distribute preferentially in a distance range from about 1 bp to 500 bp of the 5′-flanking regions with 3 major specific types, including CCG, AGG and AG; Both in the extron regions and in the 3′-flanking regions, the mount of SSRs is slightly more than that in genome and the major specific SSRs types of the former possess a high C/G content, including CCG, AGG, ACG, AGC and ACC, while the major specific SSRs types of the latter include A, ATCG, AAG and AATT; However, the intron region contains a small amount of SSRs with a major specific type of A. The study can provide a reference for better understanding the function of SSR and developing SSR molecular markers in rice. [ABSTRACT FROM AUTHOR]

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Li+ adsorption and separation from low concentration solution by lithium-ion sieve has become one of the most promising methods due to the high selectivity, adsorption capacity and adsorption rate towards lithium ion (Li+). However, the industrial application of lithium manganese oxide ion-sieve is limited due to its difficult recovery, high Mn dissolution loss rate and poor circulation performance. In this paper, the spinel-structure chromium-iron composite doped lithium-ion sieves were prepared by high-temperature solid state reaction method using LiOH·H2O, MnO2, Fe2O3, and Cr2O3 as raw materials. The effects of Cr doping amounts and calcination temperature on the phase structure, adsorption performance, and Mn dissolution loss rate of the lithium-ion sieve precursors were investigated. The results showed that the adsorption capacity of the synthesized lithium-ion sieve could reach 27.30 mg/g and the Mn dissolution loss rate was only 0.43% when the molar ratio of Li, Mn, Fe and Cr was 1∶2∶0.05∶0.05 and the calcination temperature was 550 °C. The selection adsorption experiments showed that the lithium-ion sieve presents excellent selection performance for Li+. Furthermore, the recycling performance of chromium-iron doped lithium-ion sieve showed that the adsorption capacity could still remain 89% of the second cycle (18.51 mg/g) after five cycles, which is greater than 56% of the undoped lithium-ion sieve. [ABSTRACT FROM AUTHOR]

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenyang Pharmaceutical University is the property of Shenyang Pharmaceutical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai University of Engineering Science / Shanghai Gongcheng Jishu Daxue Xuebao is the property of Journal of Shanghai University of Engineering Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Xi'an Jiaotong University is the property of Editorial Office of Journal of Xi'an Jiaotong University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Since the establishment of the first human diploid cell line derived from aborted fetal tissue in the 1960s, human embryoderived cells have been widely used in biomedical field and significantly contributes to improving human health. In recent years, human pluripotent stem cells, including human embryonic stem cells (hESCs), have shown great therapeutic potential in regenerative medicine, and thus received great attention from governments and the public. However, due to various factors such as history, culture, religious beliefs, ethics and morality, research and application involving human embryo-derived cells have been controversial worldwide. This study explores the history and progress of human embryo-derived cells in the field of biomedicine, and analyzes the evolution of regulatory systems in different countries, with the aim of facilitating the improvement of China's regulatory framework and technical requirements in this field. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of China University of Petroleum is the property of China University of Petroleum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of China University of Petroleum is the property of China University of Petroleum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aiming at the problem that the vibration signal of wind turbine bearings affected by strong background noise and other equipment excitation sources leaded to the difficulty of feature extraction for early bearing weak fault features, a wind turbine bearing fault diagnosis method based on maximum correlation kurtosis deconvolution (MCKD), optimized by multi-objective beluga whale optimization (MOBWO) algorithm was proposed. Firstly, based on the powerful global and local search capabilities of MOBWO, the key parameters of MCKD were optimized, and the optimal parameter combination of MOBWO was obtained. Secondly, the optimized MCKD was employed to process the original signal by deconvolution operation for eliminating the influence of background noise and other equipment excitation sources and highlighting the bearing periodic pulse signal. Then, the envelope spectrum method was used to process the deconvolution signal to perform the extraction of bearing fault characteristic frequency, and the obtained fault characteristic frequency values were compared with the theoretical calculation values for diagnosis. Finally, in order to validate the effectiveness of MOBWO-MCKD, the experiments were conducted on the actual collected inner and outer ring fault data of wind turbine bearings. The results show that the fault feature extraction method based on MOBWO-MCKD can effectively eliminate the background noise and other excitation source interference of the early bearing weak fault features. The inner ring signal envelope spectrum shows the inner ring failure frequency fIR=125.87Hz and 2fIR=251.74Hz. The envelope spectrum of the outer ring signal can be seen as the outer ring failure frequency that fOR=84.47Hz, 2fOR=168.94Hz, 3fOR=253.41Hz, which has a certain application value for the extraction of early weak fault characteristics of wind turbine bearings in practical engineering. [ABSTRACT FROM AUTHOR]

Copyright of Electric Power Engineering Technology is the property of Editorial Department of Electric Power Engineering Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Zhengzhou University: Engineering Science is the property of Editorial Office of Journal of Zhengzhou University: Engineering Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)