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Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe 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 Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese 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 China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS 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 Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & 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.)

A rapid multiresidue analysis method for 115 pesticides in Chinese prickly ash based on QuEChERS (quick, easy, cheap, effective, rugged and safe) procedure combined with gas chromatography-tandem mass spectrometry (GC-MS/MS) was developed and validated. The samples were pretreated with optimized QuEChERS technique, detected by GC-MS/MS based on multiple reaction monitoring mode, and analyzed quantitatively by matrix-matched internal standard method. The validation results showed a good linear relationship within the calibration linearity range of 0.002- 0.4 mg/L with the correlation coefficient(r) greater than 0.99. The limits of quantification for 115 pesticides were in the range of 0.01-0.02 mg/kg. The recoveries were in the range of 51%-150% with the RSDs of 0.8%-34%, when the fortified level was 0.01, 0.02, 0.05, 0.1 and 0.2 mg/kg. Among them, the recoveries of 80 pesticides were in the range of 70%-120% which met the residue analysis requirements. This method was simple, fast, accurate, precision and sensitivity, which provided a reliable analytical tool for rapid screening of pesticide multiresidues in Chinese prickly ash. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University 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 Experimental Technology & Management is the property of Experimental Technology & Management 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 Rare Metal Materials & Engineering is the property of Northwest Institute for Nonferrous Metal 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 Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui 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 Agriculturae Zhejiangensis is the property of Acta Agriculturae Zhejiangensis 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 Chinese Journal of Osteoporosis is the property of Chinese Journal of Osteoporosis 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 on Communication / Tongxin Xuebao is the property of Journal on Communications 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.)

Quartz optical fibers were successfully fabricated by high temperature wire drawing at different drawing rates with Yb3+-doped SiO2 preform as raw material. The structure, tensile strength and attenuation characteristics of quartz optical fibers fabricated at different wire drawing rates were studied by Fourier transform infrared spectroscopy, optical fiber stress analyzer and Model 2500. The results showed that the tensile strength of quartz optical fibers increased first and then decreased with the increase of wire drawing rate. When the wire drawing rate was 1700 m/min, the tensile strength of quartz optical fibers reached the maximum of 5.2 Gpa. The higher the wire drawing speed, the easier the internal damage and the failure of optical fibers would be caused by irradiation. This was mainly because the higher the drawing speed, the shorter the time in the high temperature region, the lower the frequency of Si-O chain breakage in the optical fiber, and the higher the tensile strength of the optical fiber. However, as the wire drawing rate continued to increase, the furnace temperature gradually increased, and the frequency of Si-O chain breakage in the fiber increased. The coupling effect of the two made the fiber strength increase first and then decrease with the drawing speed. When the irradiation dose increased gradually, the irradiation loss of quartz optical fibers increased rapidly in a straight line trend, but with the increase of the irradiation dose, the increase of the irradiation loss slowed down and stabilized gradually [ABSTRACT FROM AUTHOR]

Ｇｅｎｅｔｉｃ ｄｉｖｅｒｓｉｔｙ ｉｓ ｔｈｅ ｂａｓｉｓ ｏｆ ｇｅｎｅ ｍｉｎｉｎｇ, ｃｕｌｔｉｖａｒｓ ｉｍｐｒｏｖｅｍｅｎｔ ａｎｄ ｂｒｅｅｄｉｎｇ, ｔｈｅ ｇｅｎｅｔｉｃ ｄｉｖｅｒｓｉｔｙ ａｎａｌｙｓｉｓ ｏｆ ｒｅｃｕｒｒｅｎｔ ｓｅｌｅｃｔｉｏｎ ｐｏｐｕｌａｔｉｏｎ ｃｏｕｌｄ ｐｒｏｖｉｄｅ ｒｅｆｅｒｅｎｃｅ ａｎｄ ｇｕｉｄａｎｃｅ ｆｏｒ ｆｕｒｔｈｅｒ ｐｏｐｕｌａｔｉｏｎ ｉｍｐｒｏｖｅｍｅｎｔ ａｎｄ ｅｌｉｔｅ ｃｕｌｔｉｖａｒｓ ｓｃｒｅｅｎｉｎｇ. Ｉｎ ｔｈｉｓ ｓｔｕｄｙ, ｗｅ ｃｏｎｓｔｒｕｃｔｅｄ ｔｈｅ ｒｉｃｅ ｒｅｃｕｒｒｅｎｔ ｓｅｌｅｃｔｉｏｎ ｐｏｐｕｌａｔｉｏｎ ＸＴＢＧ-ＨＰ１ ｂａｓｅｄ ｏｎ ｆｏｕｒ ｕｐｌａｎｄ ｒｉｃｅ ｐｏｐｕｌａｔｉｏｎｓ ａｎｄ １７２ ｒｉｃｅ ｃｕｌｔｉｖａｒｓ ｏｒ ｃｏｍｂｉｎａｔｉｏｎ, ａｎｄ ｗｅ ｅｖａｌｕａｔｅｄ ｔｈｅ ｇｅｎｅｔｉｃ ｄｉｖｅｒｓｉｔｙ ｏｆ ｔｈｅ ｒｉｃｅ ｐｏｐｕｌａｔｉｏｎ, ｂｙ ｕｓｉｎｇ ｓｉｘｔｅｅｎ ｐｈｅｎｏｔｙｐｉｃ ｔｒａｉｔｓ ａｆｔｅｒ ｆｏｕｒ ｒｅｃｕｒｒｅｎｔ ｃｏｍｂｉｎａｔｉｏｎｓ. Ｔｈｅ ｒｅｓｕｌｔｓ ｗｅｒｅ ａｓ ｆｏｌｌｏｗｓ: (１) Ｔｈｅ ｆｏｕｒｔｅｅｎ ｑｕａｎｔｉｔａｔｉｖｅ ｔｒａｉｔｓ ｏｆ ｓｔｕｄｙ ｐｏｐｕｌａｔｉｏｎ ｗｅｒｅ ｎｏｒｍａｌ ｄｉｓｔｒｉｂｕｔｉｏｎ, ａｎｄ ｔｈｅｒｅ ｗｅｒｅ ｅｘｔｒｅｍｅ ｔｒａｉｔ ｉｎｄｉｖｉｄｕａｌｓ ｉｎ ｅａｃｈ ｐｈｅｎｏｔｙｐｅ. (２) Ｔｈｅ ｃｏｅｆｆｉｃｉｅｎｔ ｖａｒｉａｔｉｏｎ ｏｆ ｆｏｕｒｔｅｅｎ ｑｕａｎｔｉｔａｔｉｖｅ ｔｒａｉｔｓ ｒａｎｇｅｄ ｆｒｏｍ ０.０８ ｔｏ ０.４１ ｗｉｔｈ ａ ｍｅａｎ ｏｆ ０.２０. Ｓｈａｎｎｏｎ-Ｗｉｅｎｅｒ ｄｉｖｅｒｓｉｔｙ ｉｎｄｅｘ ｏｆ ｅａｃｈ ｔｒａｉｔ ｒａｎｇｅｄ ｆｒｏｍ ０.７２ ｔｏ １.９２ ｗｉｔｈ ａ ｍｅａｎ ｏｆ １.５０. (３) Ｔｈｅｒｅ ｗａｓ ｓｉｇｎｉｆｉｃａｎｔ ｃｏｒｒｅｌａｔｉｏｎ ｂｅｔｗｅｅｎ ｐｌａｎｔ ｔｙｐｅ ｔｒａｉｔｓ ａｎｄ ｙｉｅｌｄ ｃｏｍｐｏｎｅｎｔｓ ｔｒａｉｔｓ ｉｎ ｐｏｐｕｌａｔｉｏｎ, ｉｎｄｉｃａｔｉｎｇ ｔｈｅ ｓｅｌｅｃｔｉｏｎ ｏｆ ｐｏｐｕｌａｔｉｏｎ ｐｌａｎｔ ｔｙｐｅ ｃｏｕｌｄ ｉｍｐｒｏｖｅ ｐｏｐｕｌａｔｉｏｎ ｙｉｅｌｄ ｔｒａｉｔｓ. (４) Ｔｈｅ ｔｅｎ ｔｒａｉｔｓ ｏｆ ｆｌａｇ ｌｅａｆ ｌｅｎｇｔｈ, ｔｏｔａｌ ｎｕｍｂｅｒ ｏｆ ｐｅｒ ｐａｎｉｃｌｅ, １ ０００-Ｇｒａｉｎ ｗｅｉｇｈｔ, ｐａｎｉｃｌｅ ｌｅｎｇｔｈ, ｇｒａｉｎ ｌｅｎｇｔｈ, ｐｒｉｍａｒｙ ｂｒａｎｃｈ ｎｕｍｂｅｒ, ｅｆｆｅｃｔｉｖｅ ｐａｎｉｃｌｅ, ｆｌａｇ ｌｅａｆ ｗｉｄｔｈ, ｔｈｅ ｓｅｃｏｎｄａｒｙ ｂｒａｎｃｈ ｎｕｍｂｅｒ ａｎｄ ｈｅａｄｉｎｇ ｄａｔｅ ｃｏｕｌｄ ｂｅ ｕｓｅｄ ａｓ ｉｎｄｉｃａｔｏｒｓ ｆｏｒ ｐｏｐｕｌａｔｉｏｎ ｃｏｍｐｒｅｈｅｎｓｉｖｅ ｅｖａｌｕａｔｉｏｎ. (５) Ｔｈｅ ｆｌａｇ ｌｅａｆ ｌｅｎｇｔｈ, ｔｈｅ ｓｅｃｏｎｄａｒｙ ｂｒａｎｃｈ ｎｕｍｂｅｒ ａｎｄ ｔｏｔａｌ ｎｕｍｂｅｒ ｏｆ ｐｅｒ ｐａｎｉｃｌｅ ｗｉｔｈ ｈｉｇｈ ｇｅｎｅｔｉｃ ｖａｒｉａｔｉｏｎ, ｂｅｔｔｅｒ ｇｅｎｅｔｉｃ ｄｉｖｅｒｓｉｔｙ ａｎｄ ｈｉｇｈ ｃｏｒｒｅｌａｔｉｏｎ ｃｏｅｆｆｉｃｉｅｎｔ ｗｉｔｈ ｃｏｍｐｏｓｉｔｅ ｓｃｏｒｅｓ Ｆ ｖａｌｕｅ. Ｔｈｅ ｒｅｓｕｌｔｓ ｏｆ ｃｏｍｐｒｅｈｅｎｓｉｖｅ ｅｘｐｅｒｉｍｅｎｔ ａｎａｌｙｓｉｓ ｓｈｏｗｅｄ ｔｈａｔ ｔｈｅ ｒｅｓｅａｒｃｈ ｐｏｐｕｌａｔｉｏｎ ｈａｓ ａｂｕｎｄａｎｔ ｇｅｎｅｔｉｃ ｄｉｖｅｒｓｉｔｉｅｓ. Ｔｈｅ ｌａｔｅ ｐｏｐｕｌａｔｉｏｎ ｇｅｎｅ ｍｉｎｉｎｇ,ｓｅｌｅｃｔｉｏｎ ｏｆ ｇｏｏｄ ｂｒｅｅｄｉｎｇ ｍａｔｅｒｉａｌｓ ａｎｄ ｖａｒｉｅｔｉｅｓ ｉｍｐｒｏｖｅｍｅｎｔ ｃａｎ ｂｅ ｐｌａｃｅ ｅｍｐｈａｓｉｓ ｏｎ ｆｌａｇ ｌｅａｆ ｌｅｎｇｔｈ,ｔｈｅ ｓｅｃｏｎｄａｒｙ ｂｒａｎｃｈ ｎｕｍｂｅｒ,ａｎｄ ｔｏｔａｌ ｎｕｍｂｅｒ ｏｆ ｐｅｒ ｐａｎｉｃｌｅ,ａｎｄ ｍａｋｅ ｔｈｅ ｂｅｓｔ ｏｆ ｔｈｅ ｃｏｒｒｅｌａｔｉｏｎ ｂｅｔｗｅｅｎ ｐｌａｎｔ ｔｙｐｅ ｔｒａｉｔｓ ａｎｄ ｙｉｅｌｄ ｃｏｍｐｏｎｅｎｔｓ ｔｒａｉｔｓ. Ｉｎ ａｄｄｉｔｉｏｎ,ｉｎｄｉｖｉｄｕａｌｓ ｗｉｔｈ ｅｘｔｒｅｍｅ ｓｉｎｇｌｅ ｔｒａｉｔ ｏｒ ｈｉｇｈｅｒ Ｆ ｖａｌｕｅ ｉｎ ｔｈｅ ｓｔｕｄｙ ｐｏｐｕｌａｔｉｏｎ ｃａｎ ａｌｓｏ ｂｅ ｆｕｒｔｈｅｒ ｕｓｅｄ ｆｏｒ ｃｕｌｔｉｖａｒｓ ｉｍｐｒｏｖｅｍｅｎｔ. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management 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 (Natural Science Edition) is the property of Journal of Zhengzhou University (Natural Science Edition) 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 Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide 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.)

BACKGROUND: Vascular endothelial cell damage is shown to be closely related to blood brain barrier function disorder after traumatic brain injury. Epidermal growth factor-like domain 7 (EGFL7) is an important factor to promote angiogenesis. Whether EGFL7 can promote traumatic brain injury repair by activating angiogenesis remains unknown. OBJECTIVE: To explore the mechanisms by which EGFL7 promotes angiogenesis after traumatic brain injury in rats. METHODS: Forty-two healthy adult male rats were randomly divided into craniocerebral injury group (n=36, craniocerebral injury model was established by impacting rat dura mater with modified Feeney method) and sham group (n=6, only complete dura mater was exposed) and the rats were divided into six subgroups according to the sample time after injury: 1 hour, 6 hours, 24 hours, 3 days, 7 days and 14 days, 6 rats in each subgroup. The contusion lesion and the surrounding brain tissue were obtained after the neurological injury score was available. Another 18 rats were selected and randomized into three groups (n=6/group) to establish craniocerebral injury model. rAd-vector, rAd-EGFL7 and combined PI3K/Akt pathway inhibitor rAd-EGFL7+LY294002 was respectively injected into the ventricles of rats at 1 hour after injury. Samples were obtained at 12 hours later. RESULTS AND CONCLUSION: (1) RT-PCR, western blot assay and immumohistochemical staining results showed that the EGFL7 and CD34 were significantly up-regulated in rat brain after craniocerebral injury (P < 0.05). The expression of EGFL7 peaked on day 3 (P < 0.05), and the expression of CD34 had the same trend with EGFL7. The number of angiogenesis peaked on day 7. (2) After 12 hours of the rAd-EGFL7 microinjection in rat brain at 1 hour post-injury, the expression levels of EGFL7, CD34, pAkt and cyclin D1 were significantly up-regulated and the F0X01 expression was significantly down-regulated (all P < 0.05). (3) Microinjection of rAd-EGFL7 and PI3K/Akt inhibitor in rat brain at 1 hour post-injury, the EGFL7 expression was not significantly changed, but the CD34 expression was significantly inhibited (P < 0.05), and the number of angiogenesis was significantly decreased (P < 0.05). (4) To conclude, up-regulated EGFL7 in the injured brain tissue may be related to angiogenesis after traumatic brain injury. Overexpression of the EGFL7 promotes the angiogenesis in the injured brain tissue through activating PI3K/Akt signaling. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering 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 Journal of South China Agricultural University is the property of Gai Kan Bian Wei Hui 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 Signal Processing is the property of Journal of Signal Processing 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 Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics 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 Chemistry & Industry of Forest Products is the property of Chemistry & Industry of Forest Products 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 Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy 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 Rare Metal Materials & Engineering is the property of Northwest Institute for Nonferrous Metal 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 Chinese Journal of Applied Entomology is the property of Chinese Journal of Applied Entomology, 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.)

In order to investigate the property of “Transmicelle” a new lecithin tank mixing adjuvant, its physical characteristics were investigated by transmission electron microscopy (TEM) and laser particle size analyzer, and its synergistic effect in controlling rice planthopper was determined by bioassay and field trials. The results showed that “Transmicelle” contained round liposomes with a Z-average size of 129.5 nm. The bioassay exhibited that “Transmicelle” can increase the toxicity of sulfoxaflor by 1.67 times. Furthermore, the field trial results indicated that the control effect of sulfoxaflor was increased by 9.04%-41.77% with the “Transmicelle”. Compared to the normal dosage treatment without “Transmicelle”, no significant difference in the control effect was detected by adding “Transmicelle” if the amont sulfoxaflor was reduced by 40%. The above results illustrate that the “Transmicelle” of the lecithin tank mixing adjuvant can enhance the utilization rate of the pesticide by forming liposomes, which results in a synergistic effect. [ABSTRACT FROM AUTHOR]

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.)

Large quantities of crop stalk resources are produced in China every year, and some of the stalks are incinerated, which pollutes the environment. Biomass gasification is attracting a great deal of attention as a way of utilizing biomass waste. In this study, a circulating fluidized bed experimental system was designed and constructed with a treating capacity of 150 kg/h, which equipped with secondary back-feeding device, steam generator and air preheater. The influences of secondary back-feeding device on the gasification performance were investigated with corn stalk after crushing and drying pretreatment as biomass feedstock. The effects of air equivalence ratio (ER) within 0.20～0.35 on gasifier temperature, tar content, gas composition, carbon conversion rate and gasification efficiency were investigated when the secondary back-feeding device was closed and open. The gasification reaction was promoted by increasing ER, and gasification efficiency and carbon conversion showed a trend of increasing firstly and then decreasing. The results showed that good gasification results were both obtained at ER of 0.26. When the secondary back-feeding device was closed, the maximum carbon conversion rate and gasification efficiency were 91.19% and 72.95%, respectively. Whereas the carbon conversion rate and gasification efficiency were higher when the secondary back-feeding device was open, which was up to 93.54% and 77.06%, respectively. The experimental results also showed that secondary back-feeding device had a good effect on tar cracking. When the secondary back-feeding device was closed and open, the tar content in gas was 7.5 g/Nm3 and 4.5 g/Nm3 at ER of 0.26, respectively, which meant that tar content can be decreased by 40% when secondary back-feeding system was open. The effects of steam/biomass ratio (S/B) on gasification characteristics were investigated when the secondary back-feeding device was open. The results showed that gas quality and gasification efficiency were improved with air as main gasifying agent and steam assisted. The better operation conditions of the corn stalk gasification were 0.26 of ER and 0.2 of S/B, and gas calorific value and gasification efficiency reached to maximum value of 5.89 MJ/3 and 81.45%, respectively. The results of tar distillation analysis under typical operating conditions indicated that the pyrolysis conversion of tar was promoted by increasing the reaction temperature of gasifier and maintaining a certain amount of water vapor in the gasifier. The experiment can provide reference for efficient and clean transformation and utilization of straw biomass. [ABSTRACT FROM AUTHOR]

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control 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 Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University 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 Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)

Diffusion kurtosis imaging (DKI) as an emerging diffusion-weighted magnetic resonance imaging technology is based on non-Gaussian model. Compared with conventional diffusion technologies, i.e., diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI), DKI could be more sensitive to water diffusion in tissue microenvironment and can offer more plentiful diffusion information. DKI was originally used in the central nervous system. In recent years, the preliminary results about applications of body DKI has been obtained. In this review, we will outline DKI principles and review its situation and expectation on body application. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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.)