Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

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An equipment for mixed use of wide-band ADSL and marrow-band cards features that associated LVDS transceiver and on-board connector are installed to ATVC card and WAN card. The high-speed wide band ADSL data line can use LVDS mode to conveniently realize the mixed use of wide-band ADSL and ordinary analog user card on narrow-band speech exchange or the ONU rack of optical network unit. It is connecessary to modify the backplate of POTS and machine rack. The existing narrow-band device can be upgraded to have wide-band access function.

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In this paper, we discuss the method of error-correcting codes on the design of block ciphers.

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In this paper, the factors that may cause crack breaking of concrete pavement of several built highways were analyzed systematically and thoroughly. From analysis to site experiments and calculation, it is believed that crack breaking is mainly caused by factors as follows: 1 欧美污视频一区、 Unqualified sedimentation and losing stabilization of the roadbedinduced crack in the early; 2人与动人物XXXX国产AAAA片、 Construction technology、 materials and incorrect treatment methodswere adopted;3 国产淫秽视频网站、 Crack breaking induced by thermal stress; 4中字在线中文字幕、 Water cant circulate makes crack cause;With regard to the afore-mentioned problems, corresponding preventive measures, qualified control indices and site control approach are presented based on analysis theory and site experiments.

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As for this condition the study of physical measure of seismic intensity and damage potential of ground motion based on the abundant records and specified damage material from Chi-Chi earthquake is conducted in this paper. The main contents and conclusions of this dissertation are followed.

針對(duì)這種狀況人人爽,人人操人人，本文利用臺(tái)灣集集地震提供的同一地震中得到的豐富的地震記錄和詳盡的震害資料開(kāi)展了烈度物理標(biāo)準(zhǔn)和地震動(dòng)破壞勢(shì)的研究，主要研究?jī)?nèi)容和成果有以下幾個(gè)方面：(1)整理統(tǒng)計(jì)了集集地震的工程震害資料www.99riav29.com，并以此為基礎(chǔ)采用平均震害指數(shù)方法繪制了集集地震的烈度等震線(xiàn)性欧美激情视频免费观看。

In these portion,the article begins the study of tone sandhi from the point view of two-character phrases and three-character phrases,which is also the focus and difficult point as well.On the basis of substantial materials of Dingzhou dialect,the author elaborates its rules and principles of tone sandhi of the general phrases and those with light tones,and reiterative location.the author puts his views as follows: 1.The rules of tone sandhi of two- character phrase are simple and unitive. 2.The complex of the phrase with light tones lies in the combination of the first tone and light tone.In the case,there are two different pronunciations in Dingzhou dialect.The author guesses it is the coexist of ancient pronunciations and common spoken Chinese. 3.The tone sandhi of general three-character phrases on the basis of the rules of that of two- character phrases,using the grammar structure of the three-character phrases as the restricted conduction,which function jointly. 4.The rules of tone sandhi of three- character phrases with light tones are restricted only by that of the two- character phrases with light tones and thus are foreign to grammar structure. 5.The tone sandhi of the words with reiterative location has their own system.

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Theoretical Part: Through theoretical analysis of chemothermodynamics, combustion and engineering thermodynamics, factors that affect explosion limit were determined, which include temperature, pressure, spark ignition energy, electrode shape, direction of flame propagation and size of explosion vessel.

理論部分：根據(jù)化學(xué)熱力學(xué)亚洲高清偷拍一区二区、燃燒學(xué)和工程熱力學(xué)的基礎(chǔ)理論www.99re.8com，從本質(zhì)上定性地分析了爆炸極限的影響因素，包括溫度365电影18禁天天影院、壓力国产剧情亚洲一区二区日韩、爆炸容器的大小男人天堂黄片、點(diǎn)火能量大小18免网站免费、以及火焰?zhèn)鞑シ较虻龋贸隽诉@些影響因素對(duì)爆炸極限的影響規(guī)律色小说综合在线，以確保實(shí)驗(yàn)有完整的理論基礎(chǔ)指導(dǎo)色婷婷九月综合桃花网；在此基礎(chǔ)上本文提出了一種新的推算在常溫常壓下可燃性純質(zhì)和混合工質(zhì)制冷劑爆炸極限濃度的理論方法，該方法由可燃性氣體的化學(xué)組成來(lái)推算上下限濃度影音av全网资源，不需要其它條件中文字幕精品一区；對(duì)混合工質(zhì)制冷劑，只要再知道混合配比国内精品色，即可以推算出爆炸極限狠狠色天天综合网，使預(yù)測(cè)爆炸極限的工作更簡(jiǎn)單、方便插入女生视频。

objective:to investigate the therapeutic action of somatostatin in pancreatic leakage after pancreaticoduodenectomy.methods: to collect 100 patients with pancreaticoduodenectomy during 2003～2006,contrast 44 patients use somatostatin after pancreaticoduodenectomy as experimental group,and 56 patients with conventional therapy as control group.results:there were no pancreatic leakage case in the modified group of 44 cases.3 cases complicating pancreatic leakage occurd in control group,and the proportion of pancreatic leakage are different examined by statistic mathord.conclusions:use somatostatin after pd can restrain organism excrete diastase vera,and help anastomotic stoma to concrescent and decrease pancreatic leakage;pancreatic leakage should be treated by different grades,grade 1 can be cured by persistent drainage with somatostatin and nutritional support;grade 2 should be pay more energetic intervention.

作者單位：濰坊醫(yī)學(xué)院激情偷乱人伦小说动漫，濰坊 261042；濰坊市人民醫(yī)院肝膽外科国产欧美综合在线视频，濰坊 261042 目的：探討生長(zhǎng)抑素在胰十二指腸切除術(shù)后減少胰漏的作用国产freeXXXX性播放乳。方法：收集2003年1月～2006年12月施行pd患者100例，術(shù)后應(yīng)用生長(zhǎng)抑素持續(xù)泵入病人44例5060网全毛A片，并與同期施行的pd術(shù)后常規(guī)應(yīng)用全腸外營(yíng)養(yǎng)及抗生素治療病人56例意大利色Av资源站，結(jié)果進(jìn)行了對(duì)比觀(guān)察。結(jié)果：實(shí)驗(yàn)組病人44例無(wú)1例發(fā)生胰漏欧美特黄色视频，對(duì)照組56例病人色哟哟免费小黄片，3例發(fā)生不同程度的胰漏，發(fā)生率5.3%国产在线永久域名，統(tǒng)計(jì)學(xué)比較有顯著差異（p＜0.05）一级毛片网站在线观看。結(jié)論： pd后應(yīng)用生長(zhǎng)抑素持續(xù)泵入可以抑制胰酶的作用，使胰腸吻合口較好地愈合91啪在线观看精品，從而有效地減少胰漏的發(fā)生免费人成黄页在线观看；胰漏可進(jìn)行分級(jí)治療，ⅰ級(jí)胰漏采用通暢引流為主99riav3，同時(shí)使用生長(zhǎng)抑素和營(yíng)養(yǎng)支持等治療多可治愈黄色网址手机在线观看亚洲无码，ⅱ級(jí)胰漏需要積極治療。