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Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 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 Journal of Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials Periodical 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.)

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Copyright of Mountain Research (10082786) is the property of Mountain Research 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.)

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Copyright of Journal of Tea Science is the property of Journal of Tea 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.)

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Copyright of Journal of Synthetic Crystals is the property of Journal of Synthetic Crystals 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 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 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.)

(1) Background--M ic m - cn Lcrpriscs play an imporLanL role in poverLy cradicaLion, employ mcnL promo Lion and economic promo Lion, injccLing new forces inLo China's economic devclopmcnL. Mie m-Lea cnLerprisc is a Lype of micm-enLcipriscs, whose Lea sale mainly depends on Lhe rccommendaLion of relaLives, friends, CLisLomei's and oLher neLwork mcmbci's. (2) Methods--Combined wiLh fcaLurcs of micro-Lea enLerprises and Lea LransacLion, Lhe social capiLal Lhe- ory is inLmdnced. From Lhe pcrspecLive of social neLwork, sLrncLural eqnaLion model, BooLsLrap mediaLor LesL, and hierarchy regression analysis arc employed Lo probe inLo Lhe mechanism of micro-Lea enLerprises' social ncL- work aTfccLing Lhe performance of Lea markcLing channels. (8)Results--This rcscai'ch explores Lhe influencing mechanism of Lea markcLing channel performance from Lhe pei'spccLive of social neLwork. ITie final resulLs arc as follows: FirsLlv, neLwork ccnLraliLy (0. 150), neLwork heLcrogcnciLv (0.200) and neLwork rclaLionship (0.210) all play a sLimidaLivc role in markcLing channel performance. Secondly, channel sLabiliLy plays a mediaLing role in Lhe impacL of social neLwork on mai- kcLing channel performance, in which channel sLabiliLv plays a full mediaLing role in Lhe impacL of neLwork cen- LraliLv (0. 078) on markcLing channel performance，and plays a patl of mediaLing role in Lhe impacL of neLwork heLcrogcnciLy (0.050) and neLwork rclaLionship (0. 050) on markcLing channel performance. Thirdly, social LrnsL (0. 170) has a posiLive moderaLing cffecL on markcLing channel performance. As an informal insLiLiiLional atTangemenL, social LrnsL can snpplcmenL Lhe shorLeomings of Lhe formal conLracL sysLem, help Lo improve Lhe efficiency of matkeL operaLions，and Lhns improve Lhe markcLing performance of enLerprises. According Lo Lhe influence inLcnsiLv of Lea markcLing channel performance，Lhe Lhrcc can he ranked as follows: neLwork relaLion- ship (0. 241)，neLwork heLemgeneiLy (0. 219), and neLwork ccnLraliLy (0. 171). The expansion and mainLe- nancc of social neLwork is of greaL significance Lo Lhe Lransmission an sharing of social capiLal in Lhe operaLion of micro-Lea enLerprises. Thus，iL is necessary Lo csLablish a good and sLablc social neLwork wiLh cnLeipriscs, gov- ernmenL agencies or oLher organizaLional consumers so as Lo promoLe Lhe growth of micro-Lea enLerprises. In addi- Lion, Lhe level of social LrnsL is also an imporLanL envimnmenLal foLindaLion LhaL influences Lhe survival and devel- opmenL of micro-enLerprises. (4)Conclusions and Discussions--Based on Lhcsc resulLs, some SHggcsLions arf as follows: CD Ifs necessary Lo csLablish a rclaLionship neLwork mainLenance sysLem Lo realize Lhe cfricicnL Lransfer and iiLilizaLion of informaLion rcsoLirccs.②We should expand hcLcrogcncoLis social neLwork and realize Lhe cffecLivc devclopmcnL and rccombinaLion of informaLion rcsoLirccs. Moreover, we should Lry Lo connccL wiLh employees and scienLific research insLiLnLions wiLh differenL indusLrial backgrounds.③lL is csscnLial Lo Lry Lo occupy Lhe cenLral posiLion of social neLwork, realizing Lhe rapid exchange and inLegraLion of informaLion resources. In addiLion, we should csLablish dirccL c ounce Lion wiLh organizaLional cons nmol's in order Lo occupy Lhe cenLral posiLion of Lhe neLwork. [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.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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 present methods for the determination of heavy metals in soil by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) have many disadvantages including an inappropriate decomposition process and the parameters of instruments requiring optimization. To address this inadequacy, soil samples for an investigation of heavy metal pollution have been characterized by complex matrices, large weights and different properties of measured elements. Combining acid decomposition on an electric heating plate with ICP-MS, the key to determination of four kinds of main heavy metal pollutants, Cr, Cu, Cd and Pb, in soil were explored and are presented in this study. The results show that the samples can be decomposed completely by a mixture of nitric acid, hydrochloric acid, hydrofluoric acid, and sulfuric acid (50%). The matrix effect is reduced effectively by the work curve and the mass spectrum interference is reduced effectively by both adopting collision/reaction cell technology and by mathematical correction. Integration time and repeated times of ICP-MS have significant influences on testing results of trace Cd, so the optimal parameters of them are 0.4s and 3 times, respectively. The detection limits of this method for Cr, Cu, Cd and Pb are 1.74, 0.89, 0.015 and 0.08μg/g, respectively. This study provides a rapid and accurate method for determining heavy metals in soil. [ABSTRACT FROM AUTHOR]

目的探讨早期及术中使用硫酸镁(MgSO4)对重型颅脑损伤患者预后改善的作用。方法选取该院2011 年1月至2014年1月符合标准的重型颅脑损伤患者62例随机纳入对照组（19例）、常规组（18例）和早期及术中应用组 (25例）。对照组不使用任何Mg2+制剂，常规组于入院时使用MgSO4,早期及术中应用组于入院时及术中使用MgSO4;三组 均在入院时、入院后24、48、72h监测患者血清Mg2+浓度，对比患者术前、术后CT平扫结果及伤后3个月的格拉斯哥预 后评分（H0S)。结果早期及术中应用组仅提升伤后24 h血清Mg2+;浓度，且较其他两组高，差异均有统计学意义(P<0.05); 早期及术中应用组患者脑水肿改善情况优于其他两组，差异均有统计学意义(P<0.05);早期及术中应用组患者伤后3个月 H0S中各项目所占比例优于其他两组，差异均有统计学意义(P<0.01或0.05)。结论重型颅脑损伤患者宜在早期及术中应 用MgSO4,可改善患者预后。 [ABSTRACT FROM AUTHOR]