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| 1 | 青藏高原多年冻土区天然气水合物形成条件模拟研究显示文摘基于野外气体地球化学调查研究,以及前人有关冻土表层温度、冻土层内地温梯度、冻土层下地温梯度等的资料,对青藏高原多年冻土区天然气水合物的形成条件开展了模拟研究.结果显示:研究区冻土条件能够满足天然气水合物形成的基本要求;气体组成、冻土特征(如冻土厚度或冻土表层温度、冻土层内地温梯度、冻土层下地温梯度等)是影响研究区天然气水合物稳定带厚度的最重要因素,其在不同点位上的差异性可能导致天然气水合物分布的不均匀性的主要原因;研究区最可能的天然气水合物为甲烷与重烃(乙烷和丙烷)的混合气体型天然气水合物;在天然气水合物分布的区域,其产出的上临界点深度在几十至一百多米间,下临界点深度在几百至近一千米间,厚度可达到几百米.与CanadianMallik三角洲多年冻土区相比,青藏高原多年冻土区除了冻土厚度小些外,其他条件,如冻土层内地温梯度、冻土层下地温梯度、气体组成等条件较为相近,具有一定的可比性,预示着良好的天然气水合物潜力. | 卢振权 SULTAN Nabil 金春爽 饶竹 罗续荣 吴必豪 祝有海 | 2009 | 地球物理学报2009,52,1: | 35 |
| 2 | 天然气水合物形成条件与含量影响因素的半定量分析显示文摘天然气水合物形成条件及其含量的研究是天然气水合物调查研究中最为关心的两个问题.从天然气水合物形成过程的热动力学理论模型出发,半定量地探讨了不同因素(温度、压力、气体组成、孔隙水盐度、沉积物孔隙大小等)对天然气水合物形成作用及含量的影响程度.结果显示,气体组成特别是丙烷的加入对天然气水合物形成的温度和压力条件影响最大,孔隙水盐度也会对天然气水合物形成的温度和压力条件产生重要影响,沉积物孔隙在一定范围内(1×10-6m^4×10-8m)对天然气水合物形成的温度和压力条件影响有限.天然气水合物含量受孔隙大小和盐度影响较小,主要只与气体的供应大小有关. | 卢振权 SULTAN Nabil 金春爽 王明君 祝有海 吴必豪 | 2008 | 地球物理学报2008,51,1: | 32 |
| 3 | SJWD14121600000297显示文摘 | Jacques Ferlay Isabelle Soerjomataram Rajesh Dikshit Sultan Eser Colin Mathers Marise Rebelo Donald Maxwell Parkin David Forman Freddie Bray | 2015 | Int. J. Cancer2015,,5: | 31 |
| 4 | Hepatitis B virus,HBx mutants and their role in hepatocellular carcinoma显示文摘Hepatocellular carcinoma(HCC)is one of the leading causes of death induced by cancer in the modern world and majority of the cases are related to chronic hepatitis B virus(HBV)infection.HBV-encoded X protein(HBx)is known to play a pivotal role in the pathogenesis of viral induced HCC.HBx is a multifunctional protein of17 kDa which modulates several cellular processes by direct or indirect interaction with a repertoire of host factors resulting in HCC.HBX might interfere with several cellular processes such as oxidative stress,DNA repair,signal transduction,transcription,protein degradation,cell cycle progression and apoptosis.A number of reports have indicated that HBx is one of the most common viral ORFs that is often integrated into the host genome and its sequence variants play a crucial role in HCC.By mutational or deletion analysis it was shown that carboxy terminal of HBx has a likely role in protein-protein interactions,transcriptional transactivation,DNA repair,cell,signaling and pathogenesis of HCC.The accumulated evidence thus far suggests that it is difficult to understand the mechanistic nature of HBx associated HCC,and HBx mediated transcriptional transactivation and signaling pathways may be a major determinant.This article addresses the role of HBx in the development of HCC with particular emphasis on HBx mutants and their putative targets. | Ashraf Ali Hany Abdel-Hafiz Mohd Suhail Amany Al-Mars Mohammad Khalid Zakaria Kaneez Fatima Sultan Ahmad Esam Azhar Adeel Chaudhary Ishtiaq Qadri | 2014 | World Journal of Gastroenterology2014,20,30: | 29 |
| 5 | GRADE指南:Ⅸ.证据质量升级显示文摘证据质量升级的最常见原因是效应量大。当方法学严谨的观察性研究表明风险至少降低或增加2倍时,GRADE建议考虑将证据质量升高1级;当风险至少降低或增加5倍时,考虑将证据质量升高2级。当存在剂量-反应关系,或所有合理的混杂、偏倚会降低明显的治疗效应,或混杂、偏倚使得结果无效为假效应时,系统评价作者和指南制定者也可考虑升高证据质量。其他考虑因素包括起效迅速、潜在的疾病(状态)趋势以及间接证据。 | Gordon H.Guyatt Andrew D.Oxman Shahnaz Sultan Paul Glasziou Elie A.Akl Pablo Alonso-Coello David Atkins Regina Kunz Jan Brozek Victor Montori Roman Jaeschke David Rind Philipp Dahm Joerg Meerpohl Gunn Vist Elise Berliner Susan Norris Yngve Falck-Ytter M.Hassan Murad Holger J.Schünemann 代表GRADE工作组 李幼平 杨晓妍 李玲 王应强 | 2011 | 中国循证医学杂志2011,11,12: | 22 |
| 6 | H2O2处理后的黄铜矿和黄铁矿对黄药的吸附作用及其浮选分离(英文)显示文摘通过一系列浮选试验和矿物表面分析技术研究H2O2处理对黄药浮选分离黄铜矿与黄铁矿的影响。浮选试验结果表明,H2O2对两种矿物的浮选行为具有一定影响,H2O2对黄铁矿的抑制效果强于黄铜矿。在一定H2O2浓度条件下,黄铜矿在pH 9.0时可从黄铁矿中选择性分离出来,此时黄铜矿的回收率达84%以上,而黄铁矿回收率低于24%。Zeta电位、紫外-可见分光光谱以及红外光谱等分析结果表明,H2O2处理后的两种矿物对捕收剂的吸附量不同,黄铜矿表面对黄药的吸附量远远大于黄铁矿表面对黄药的吸附量。红外光谱和XPS分析结果表明,H2O2处理可大幅度提高黄铁矿表面的亲水性,从而抑制捕收剂的吸附,使其可浮性下降;而黄铜矿对H2O2不产生吸附,因此对黄药的吸附和对二黄原酸的氧化效果较好,黄铜矿的浮选回收率较高。 | Sultan Ahmed KHOSO 胡岳华 吕斐 高雅 刘润清 孙伟 | 2019 | Transactions of Nonferrous Metals Society of China2019,29,12: | 21 |
| 7 | 运输应激猪骨骼肌中热应激蛋白HSP_(70)和HSP_(90)家族的表达显示文摘利用Westernblot技术 ,检测长途运输试验猪骨骼肌 (背最长肌和臀大肌 )中分属于HSP70 家族和HSP90 家族的 4种应激蛋白 (HSP70 ,HSP72 ,HSP86和HSP90 )的表达。所有运输应激猪和对照猪肌肉组织中均检测到了上述 4种HSP。对照猪组织中HSP的表达说明HSP除了在受应激的细胞内行使生理功能外 ,还具有独立于应激刺激应答以外的其它作用。6h的长途运输后 ,HSP的表达量明显不同 ,HSP70 和HSP72 在肌肉组织中的表达虽然有一定的增加 ,但统计学分析差异不显著 (P >0 0 5 ) ;而HSP86和HSP90 在骨骼肌中的表达明显下降 ,尤以HSP90 下降最为显著 (P <0 0 1)。提示HSP90 家族成员与肉品品质相关 。 | 鲍恩东 K R Sultan B Nowak J Hartung | 2001 | 南京农业大学学报2001,24,1: | 21 |
| 8 | Trends and outcomes of pancreaticoduodenectomy for periampullary tumors: A 25-year single-center study of 1000 consecutive cases显示文摘AIM To evaluate the evolution, trends in surgical approaches a n d r e c o n s t r u c t i o n t e c h n i q u e s, a n d i m p o r t a n t lessons learned from performing 1000 consecutive pancreaticoduodenectomies(PDs) for periampullary tumors.METHODS This is a retrospective review of the data of all patients who underwent PD for periampullary tumor during the period from January 1993 to April 2017. The data were categorized into three periods, including early period(1993-2002), middle period(2003-2012), and late period(2013-2017).RESULTS The frequency showed PD was increasingly performed after the year 2000. With time, elderly, cirrhotic and obese patients, as well as patients with uncinate process carcinoma and borderline tumor were increasingly selected for PD. The median operative time and postoperative hospital stay decreased significantly over the periods. Hospital mortality declined significantly, from 6.6% to 3.1%. Postoperative complications significantly decreased, from 40% to 27.9%. There was significant decrease in postoperative pancreatic fistula in the second 10 years, from 15% to 12.7%. There was a significant improvement in median survival and overall survival among the periods.CONCLUSION Surgical results of PD significantly improved, with mortality rate nearly reaching 3%. Pancreatic reconstruction following PD is still debatable. The survival rate was also improved but the rate of recurrence is still high, at 36.9%. | ayman el nakeeb waleed askar ehab atef ehab el hanafy ahmad m sultan tarek salah ahmed shehta mohamed el sorogy emad hamdy mohamed el hemly ahmed a el-geidi tharwat kandil mohamed el shobari talaat abd allah amgad fouad mostafa abu zeid ahmed abu el eneen nabil gad el-hak gamal el ebidy omar fathy ahmed sultan mohamed abdel wahab | 2017 | World Journal of Gastroenterology2017,23,38: | 15 |
| 9 | SJWD14121600000297显示文摘 | Jacques Ferlay Isabelle Soerjomataram Rajesh Dikshit Sultan Eser Colin Mathers Marise Rebelo Donald Maxwell Parkin David Forman Freddie Bray | 2015 | Cancer2015,,5: | 15 |
| 10 | Prehypertension: Underlying pathology and therapeutic options显示文摘Prehypertension(PHTN) is a global major health risk that subjects individuals to double the risk of cardiovascular disease(CVD) independent of progression to overt hypertension. Its prevalence rate varies considerably from country to country ranging between 21.9% and 52%. Many hypotheses are proposed to explain the underlying pathophysiology of PHTN. The most notable of these implicate the renin-angiotensin system(RAS) and vascular endothelium. However, other processes that involve reactive oxygen species, the inflammatory cytokines, prostglandins and C-reactive protein as well as the autonomic and central nervous systems are also suggested. Drugs affecting RAS have been shown to produce beneficial effects in prehypertensives though such was not unequivocal. On the other hand, drugs such as β-adrenoceptor blocking agents were not shown to be useful. Leading clinical guidelines suggest using dietary and lifestyle modifications as a first line interventional strategy to curb the progress of PHTN; however, other clinically respected views call for using drugs. This review provides an overview of the poten-tial pathophysiological processes associated with PHTN, abridges current intervention strategies and suggests investigating the value of using the 'Polypill' in prehypertensive subjects to ascertain its potential in delaying(or preventing) CVD associated with raised blood pressure in the presence of other risk factors. | Sulayma Albarwani Sultan Al-Siyabi Musbah O Tanira | 2014 | World Journal of Cardiology2014,6,8: | 13 |
| 11 | 运输应激猪肝脏中热应激蛋白的定位与表达显示文摘利用免疫组织化学定位方法和Westernblot技术 ,对长途运输试验猪肝脏中 5种不同分子量的热应激蛋白HSP70 、HSP72 、HSP86、HSP90 和HSP2 7进行定位和表达。所有长途运输后应激猪和对照猪肝脏组织中均同时检测到了上述 5种HSP。肝细胞胞浆和胞核均显示阳性信号 ,但HSPs在肝细胞中的定位有差异 ,大多数HSP70 、HSP72 和HSP2 7主要分布于肝细胞胞浆内 ,而HSP90 和HSP86阳性颗粒在核内的分布比其在胞浆中的分布更为明显。肝小叶周边区有明显颗粒变性和脂肪变性的肝细胞中HSPs的阳性染色信号较弱。 6h的长途运输应激后 ,与对照组相比 ,HSPs在肝脏组织中的表达量存在差异 ,表现为HSP70 家族的HSP70 和HSP72 的表达没有明显的升高 (P >0 .0 5 ) ,HSP90 家族的HSP90 的表达出现极显著的增加 (P <0 .0 1) ,然而 ,HSP90 家族的HSP86和小分子量家族的HSP2 7的表达量呈现明显的下降 (P <0 .0 5 )。 | 鲍恩东 Sultan K R Nowak B Hartung J | 2002 | 中国农业科学2002,35,9: | 13 |
| 12 | Geodynamic Background of Intracontinental Cenozoic Alkaline Volcanic Rocks in Laojiezi, Western Yangtze Craton: Constraints from Sr-Nd-Hf-O Isotopes显示文摘The Laojiezi alkaline volcanic rocks, which are located in the intraplate region of the Yangtze craton, coincide with the formation of the Jinshajiang-Ailaoshan-Red River alkaline rock belt. Although this belt has been widely studied by geologists because of its porphyry-related Pb-Ag-Au polymetallic deposit and geotectonic location, the material sources of this belt are still debate. Whole-rock analyses show that these rocks have high total alkali contents(3.73–11.08 wt%), and their aluminum saturation index(ASI) values widely vary from 0.82 to 3.07, which comprise a metaluminous-peraluminous magma series. These rocks are characterized by high K(K2 O/Na2 O>1) and low Ti and Mg contents; enrichment in large-ion lithophile elements, such as Rb, Ba, K and light rare earth elements; and depletion in high field strength elements, such as Ta, Nb, P, and Ti. These rocks exhibit moderate Eu(Eu/Eu*=0.86–1.04) and Ce(Ce/Ce*=0.63–0.96) anomalies. Their(87 Sr/86 Sr)i, εNd(t), zircon εHf(t) and δ18 O values range from 0.70839 to 0.71013, from-10.16 to-12.45, from-19.6 to-5.8, and from 5.69‰ to 8.54‰, respectively, and their Nd and Hf two-stage model ages(TDM2) are 1.67–1.86 Ga and 1.27–2.02 Ga, respectively. These data reflect the primary partial melting of Paleoproterozoic to Mesoproterozoic lower crust with minor residual continental lithospheric mantle and supracrustal metasediments. The lithosphere was likely thickened along the southeastern margin of the Tibetan Plateau following the Indian-Asian continentcontinent collision(65–41 Ma). During the post-collision phase(36–16 Ma), the transition from a compressional to extensional setting triggered the convective removal of the over-thickened CLM beneath the Yangtze craton, which led to the upwelling of asthenospheric materials. This process created alkali-rich and high-K magma through the partial melting of the thickened lower crust. Magma that carried Cu-Au-Pb-Ag minerals was emplaced by strike-slip motion along the E-to W-or ENE-to WSWtrending tectonically weak zone, finally forming an alkaline porphyry Cu-Au-Pb-Ag polymetallic deposit. | YAN Qinggao JIANG Xiaojun LI Chao ZHOU Limin WANG Zhongqiang Sultan Baig SHER QU Wenjun DU ANDao | 2018 | Acta Geologica Sinica(English Edition)2018,92,6: | 12 |
| 13 | Comparison of the diagnostic yield and outcomes between standard 8 h capsule endoscopy and the new 12 h capsule endoscopy for investigating small bowel pathology显示文摘AIM: To evaluate the completion rate and diagnostic yield of the Pill Cam SB2-ex in comparison to the Pill Cam SB2.METHODS:Two hundred cases using the 8-h Pill Cam SB2 were retrospectively compared to 200 cases using the 12 h Pill Cam SB2-ex at a tertiary academic center.Endoscopically placed capsules were excluded from the study.Demographic information,indications for capsule endoscopy,capsule type,study length,completion of exam,clinically significant findings,timestamp of most distant finding,and significant findings beyond 8 h were recorded.RESULTS:The 8 and 12 h capsule groups were well matched respectively for both age(70.90±14.19vs 71.93±13.80,P=0.46)and gender(45.5%vs48%male,P=0.69).The most common indications for the procedure in both groups were anemia and obscure gastrointestinal bleeding.Pill Cam SB2-ex had a significantly higher completion rate than Pill Cam SB2(88%vs 79.5%,P=0.03).Overall,the diagnostic yield was greater for the 8 h capsule(48.5%for SB2vs 35%for SB2-ex,P=0.01).In 4/70(5.7%)of abnormal SB2-ex exams the clinically significant findingwas noted in the small bowel beyond the 8 h mark.CONCLUSION:In our study,we found the Pill Cam SB2-ex to have a significantly increased completion rate,though without any improvement in diagnostic yield compared to the Pill Cam SB2. | Merajur Rahman Stuart Akerman Bethany De Vito Larry Miller Meredith Akerman Keith Sultan | 2015 | World Journal of Gastroenterology2015,21,18: | 12 |
| 14 | Predictors of long term survival after hepatic resection for hilar cholangiocarcinoma:A retrospective study of 5-year survivors显示文摘AIM:To determine predictors of long term survival after resection of hilar cholangiocarcinoma(HC) by comparing patients surviving > 5 years with those who survived < 5 years.METHODS:This is a retrospective study of patients with pathologically proven HC who underwent surgical resection at the Gastroenterology Surgical Center,Mansoura University,Egypt between January 2002 and April 2013.All data of the patients were collected from the medical records.patients were divided into two groups according to their survival:patients surviving less than 5 years and those who survived > 5 years.RESULTS:There were 34(14%) long term survivors(5 year survivors) among the 243 patients.Fiveyear survivors were younger at diagnosis than those surviving less than 5 years(mean age,50.47 ± 4.45 vs 54.59 ± 4.98,p = 0.001).Gender,clinical presentation,preoperative drainage,preoperative serum bilirubin,albumin and serum glutamic-pyruvic transaminase were similar between the two groups.The level of CA 19-9 was significantly higher in patients surviving < 5 years(395.71 ± 31.43 vs 254.06 ± 42.19,p = 0.0001).Univariate analysis demonstrated nine variables to be significantly associated with survival > 5 year,includingyoung age(p = 0.001),serum CA19-9(p = 0.0001),non-cirrhotic liver(p = 0.02),major hepatic resection(p = 0.001),caudate lobe resection(p = 0.006),well differentiated tumour(p = 0.03),lymph node status(0.008),R0 resection margin(p = 0.0001) and early postoperative liver cell failure(p = 0.02).CONCLUSION:Liver status,resection of caudate lobe,lymph node status,R0 resection and CA19-9 were demonstrated to be independent risk factors for long term survival. | Mohamed Abd El Wahab Ayman El Nakeeb Ehab El Hanafy Ahmad M Sultan Ahmed Elghawalby Waleed Askr Mahmoud Ali Mohamed Abd El Gawad Tarek Salah | 2016 | World Journal of Gastrointestinal Surgery2016,8,6: | 10 |
| 15 | Post-endoscopic retrograde cholangiopancreatography pancreatitis: Risk factors and predictors of severity显示文摘AIM To detect risk factors for post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis(PEP) and investigate the predictors of its severity.METHODS This is a prospective cohort study of all patients who underwent ERCP.Pre-ERCP data,intraoperative data,and post-ERCP data were collected.RESULTS The study population consisted of 996 patients.Their mean age at presentation was 58.42(± 14.72) years,and there were 454 male and 442 female patients.Overall,PEP occurred in 102(10.2%) patients of the study population; eighty(78.4%) cases were of mild to moderate degree,while severe pancreatitis occurred in 22(21.6%) patients.No hospital mortality was reported for any of PEP patients during the study duration.Age less than 35 years(P = 0.001,OR = 0.035),narrower common bile duct(CBD) diameter(P = 0.0001) and increased number of pancreatic cannulations(P = 0.0001) were independent risk factors for the occurrence of PEP.CONCLUSION PEP is the most frequent and devastating complication after ERCP.Age less than 35 years,narrower median CBD diameter and increased number of pancreaticcannulations are independent risk factors for the occurrence of PEP.Patients with these risk factors are candidates for prophylactic and preventive measures against PEP. | Ayman El Nakeeb Ehab El Hanafy Tarek Salah Ehab Atef Hosam Hamed Ahmad M Sultan Emad Hamdy Mohamed Said Ahmed A El Geidie Tharwat Kandil Mohamed El Shobari Gamal El Ebidy | 2016 | World Journal of Gastrointestinal Endoscopy2016,8,19: | 10 |
| 16 | 埃及尼罗河三角洲城市化监测显示文摘对1972、1984和1990年在尼罗河三角洲获取的Landsat MSS和TM影象(scenes)处理的和协同配准的(coregistered)数字镶嵌图比较表明,城镇增长正危及着埃及农业的生产力。在1972、1984和1990年尼罗河三角洲的城镇面积至少分别占3.6%、4.7%和5.7%,在这18年期间增长了58%。大约一半的增长出现在1984~1990年期间。如果这种趋势继续下去,到2010年埃及将因城市化而丧失农地总面积的12%。尽管事实上城镇增长主要出现在城市周围,但在几千个小村庄周围的增长却对尼罗河三角洲的农业生产构成最大的威胁。1972~1990年间,城市和大村庄的累积增长率为37%,而同期小村庄的累积增长率为77%。 | Mohamed Sultan Michael Fiske Thomas Stein Mohamed Gamal Yehia Abdel Hady Hesham El Araby Ahmed Madani Salah Mehanee Richard Becker 石培礼 | 1999 | AMBIO-人类环境杂志1999,28,7: | 9 |
| 17 | 复配捕收剂从白云石中选择性浮选菱锌矿(英文)显示文摘将苯甲羟肟酸(BHA)与油酸钠(NaOL)混合,制备一种新的复配捕收剂(BHOA),并将其应用于从白云石中浮选分离菱锌矿。浮选结果表明,单独使用油酸钠对菱锌矿和白云石均有较好的捕收性能,但选择性较差。在BHA/NaOL摩尔比为2:1的复配体系中,菱锌矿与白云石的回收率分别为90%和5%左右。表面张力分析表明,由于协同效应,复配捕收剂BHOA的表面活性高于单一油酸钠。Zeta电位和XPS测量结果显示,在复配捕收剂BHOA存在的情况下,BHA与NaOL在菱锌矿表面发生共吸附,白云石表面仅观察到油酸钠。 | 王丽 胡广艳 孙伟 Sultan Ahmed KHOSO 刘润清 张祥锋 | 2019 | Transactions of Nonferrous Metals Society of China2019,29,5: | 7 |
| 18 | Neurocysticercosis:A case report and brief review显示文摘Neurocysticercosis(NCC) is one of the seven neglected endemic zoonoses targeted by the World Health Organization.It is considered a common infection of the nervous system caused by the Tanenia solium and is known to be the primary cause of preventable epilepsy in many developing countries.NCC is commonly resulted by the ingestion of Tanenia solium eggs after consuming undercooked pork,or contaminated water.The parasite can grow in the brain and spinal cord within the nervous system,causing severe headache and seizures beside other pathological manifestations.Immigration and international travel to endemic countries has made this disease common in the United States.NCC can be diagnosed with computed tomography and magnetic resonance imaging of the brain.The treatment of the NCC including cysticidal drugs(eg.,albendazole and praziquantel),and neurosurgical procedure,depending upon a the situation.A patient of Asian origin came to our clinic with complaints of dizziness,headaches and episodes seizures for the past twelve years without proper diagnosis.The computed tomography and magnetic resonance imaging scans indicated multilobulated cystic mass in the brain with the suspicion of neurocysticercosis. | Syed A.A.Rizvi Ayman M.Saleh Hanns Frimpong Hussain M.Al Mohiy Jasmin Ahmed Ronda D.Edwards Sultan S.Ahmed | 2016 | Asian Pacific Journal of Tropical Medicine2016,9,1: | 7 |
| 19 | Intraoperative endoscopic retrograde cholangiopancreatography: A useful tool in the hands of the hepatobiliary surgeon显示文摘AIM: To evaluate the efficacy of intraoperative endoscopic retrograde cholangio-pancreatography(ERCP) combined with laparoscopic cholecystectomy(LC) forpatients with gall bladder stones(GS) and common bile duct stones(CBDS).METHODS: Patients treated for GS with CBDS were included. LC and intraoperative transcystic cholangiogram(TCC) were performed in most of the cases. Intraoperative ERCP was done for cases with proven CBDS.RESULTS: Eighty patients who had GS with CBDS were included. LC was successful in all cases. Intraoperative TCC revealed passed CBD stones in 4 cases so intraoperative ERCP was performed only in 76 patients. Intraoperative ERCP showed dilated CBD with stones in 64 cases(84.2%) where removal of stones were successful; passed stones in 6 cases(7.9%); short lower end stricture with small stones present in two cases(2.6%) which were treated by removal of stones with stent insertion; long stricture lower 1/3 CBD in one case(1.3%) which was treated by open hepaticojejunostomy; and one case(1.3%) was proved to be ampullary carcinoma and whipple's operation was scheduled. CONCLUSION: The hepatobiliary surgeon should be trained on ERCP as the third hand to expand his field of therapeutic options. | Ayman El Nakeeb Ahmad M Sultan Emad Hamdy Ehab El Hanafy Ehab Atef Tarek Salah Ahmed A El Geidie Tharwat Kandil Mohamed El Shobari Gamal El Ebidy | 2015 | World Journal of Gastroenterology2015,21,2: | 6 |
| 20 | 煅烧-水化处理提高脱硫石膏转化为α-半水石膏的相变活性(英文)显示文摘湿法石灰石-石膏烟气脱硫过程中产生的脱硫石膏的大量堆积不仅会浪费土地而且会对周边环境造成严重污染。制备α-半水石膏是高附加值利用脱硫石膏的重要途径。目前,常压甘油-水溶液法被认为是一种制备α-半水石膏的优良方法,但是在这种溶液体系中二水石膏转化效率不高。用煅烧-水化预处理方法活化脱硫石膏使其能够比较容易地完成相变转化。预处理后脱硫石膏的结晶性变差并形成细碎的无规则薄片状晶体,这大幅度地提高了脱硫石膏的比表面积。另外,预处理还将大部分吸附在脱硫石膏表面的有机物去除。结晶性变差、比表面积提高以及表面有机物的消除大幅度地提高了脱硫石膏的相变反应活性,有利于二水石膏的溶解和α-半水石膏的成核结晶,最终促进脱硫石膏向α-半水石膏的转化。 | 管青军 孙伟 官长平 余伟健 朱向楠 Sultan Ahmed KHOSO 王平 彭文庆 | 2019 | Journal of Central South University2019,26,12: | 4 |