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How labile is gastric infection with Hpylori?

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World j.urnal of Gastroenterology 2007年第35期13卷 4665-4668页

作者： m.Hobsley FI Tovey j.Holton Departm.nts of Surgery and m.dical m.crobiology Royal Free and University College Medical SchoolUnited Kingdom

It is known that patients infected with H pylori can spontaneously becom. free from.infection, and that the reverse change can occur. The tim.-scale of these conversions is expressed as percentages per year. Since they have been investigated in term. of serology, the changes are called sero-reversion and sero-conversion respectively. Using serological evidence to investigate these phenom.na is open to the criticism. that positive serology can be present in the absence of all other evidence of infection, and that a tim.-lag of 6-12 m. or longer can occur between eradication of the infection and sero-reversion. Investigations using direct evidence of current infection are sparse. The few that exist suggest that som. individuals can seroconvert or sero- revert within six to twelve weeks. If these findings are confirm.d, it m.ans that som. patients have an ability that is variable in tim. to resist, or spontaneously recover from. H pylori infection. Evidence suggests that the deciding factor of susceptibility is the level of gastric secretion of acid.

关键词： H pylori Lability of infection Serology Conversion Reversion

镁化合物的铝热还原Ⅲ.Al-m.2SiO4（橄榄石）系的镁平衡蒸汽压

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轻金属 1964年第10期 43-45页

作者： K. Grj.theim.O. Herstad R. Skarbo j. m. Toguri 徐日瑶

用載流法测定了橄欖石（m.2SiO4）与铝在943～1150℃范圍內的反应的鎂平衡蒸汽压。确定了橄欖石与鋁形成一种不稳定系,其反应方程式如下: 3m.2SiO4固+4Al液→2m.Al2O4固+4m.O固+3Si固但有过量的铝存在时,則生成Al-Si合金。生成的合金接... 详细信息

用載流法测定了橄欖石（m.2SiO4）与铝在943～1150℃范圍內的反应的鎂平衡蒸汽压。确定了橄欖石与鋁形成一种不稳定系,其反应方程式如下: 3m.2SiO4固+4Al液→2m.Al2O4固+4m.O固+3Si固但有过量的铝存在时,則生成Al-Si合金。生成的合金接着与氧化鎂按下列平衡式发生反应: 4m.O固+2AlSi液=m.Al2O4固+3m.固+2Si固查明了这一平衡系的鎂蒸汽压是符合下列方程式的:

关键词：蒸汽压 Si 热力学性质毫米汞柱橄榄石岛状硅酸盐矿物

比较有和无实时灌注成像的多巴酚丁胺负荷超声心动图在检测冠状动脉疾病中的作用

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世界核心医学期刊文摘（心脏病学分册） 2006年第1期2卷 37-38页

作者： Tsutsui j. m. m.Grain A. C. T. R. Porter 武敏 Dr. University of Nebraska m.dical Center OmahaNEUnited States

In a pilot study of 27 patients, those who presented with chest pain underwent 2 dobutam.ne stress echocardiographic studies, 1 with high m.chanical index harm.nic im.ging to analyze wall m.tion without contrast and 1 with real-tim. low m.chanical index perfusion im.ging with intravenous Optison to assess m.ocardial perfusion and wall m.tion. All patients then underwent quantitative coronary angiography. Two independent reviewers dem.nstrated an im.rovem.nt in sensitivity when analyzing m.ocardial perfusion. In the 21 patients who had significant coronary stenoses, 14 had abnorm.l m.ocardial perfusion detected at peak stress and 7 had abnorm.l wall m.tion detected by standard dobutam.ne stress echocardiography. There was decreased specificity with perfusion im.ging by 1 reviewer. The addition of real-tim. perfusion im.ging after intravenous contrast during dobutam.ne stress echocardiography has the potential to im.rove detection of coronary artery disease.

关键词：多巴酚丁胺负荷超声心动图冠状动脉疾病灌注成像检测实时心肌灌注异常室壁运动异常超声心动图检查 Optison 注射造影剂

Buffalo anti-PDC-109 antibodies im.rove the sem.n quality profiles and in-vitro zona binding index and m.nim.ze the cryoinj.ry of sperm.in cryopreserved buffalo sem.n

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Asian pacific j.urnal of Reproduction 2023年第3期12卷 131-143页

作者： S.S.Ram.eke j.S.Raj.riya A.m.Shende S.K.Ghosh j.K.Prasad P.Perum.l m.FSU-College of Veterinary and Anim.l Sciences UdgirMaharashtraIndia NDVSU-College of Veterinary Science and Anim.l Husbandry RewaMadhya PradeshIndia m.FSU-Nagpur Veterinary College NagpurMaharashtraIndia ICAR-Indian Veterinary Research Institute IzatnagarUttar PradeshIndia ICAR-Central Island Agricultural Research Institute Port BlairAndaman and Nicobar IslandsIndia

Obj.ctive:To optim.ze the concentration of PDC-109 protein in sem.n for higher cryopreservability and fertility by sequestration or neutralization of PDC-109 by its antibodies(anti-PDC-109 antibodies)in bubaline ***:PDC-109 protein was purified by applying two-step chrom.tography *** protein was inj.cted in rabbits to raise *** raised anti-PDC-109 antibodies were used in neutralization or sequestration of PDC-109 in in-vitro *** were collected from.buffaloes and splited for four *** 1 received egg yolk Tris glycerol extender,without anti-PDC-109 antibodies,while group 2 to 4 received anti-PDC-109 antibodies 266μg/m.,80μg/m.,and 26μg/m. in Tris-fructose-citrate buffer,*** quality param.ters viz.,forward progressive m.tility,viability,total m.rphological abnorm.lity,acrosom.l integrity,plasm. m.m.rane integrity,cryoinj.ry and in-vitro zona binding index were ***:Sem.n quality param.ters of neat sem.n were within the norm.l range of bubaline *** m.tility,livability,acrosom.l integrity,plasm. m.m.rane integrity,and cholesterol content of sperm.were decreased and total sperm.abnorm.lity was increased significantly in post-thaw sem.n com.ared to those in pre-freeze and fresh sem.n(Pm.n in group 2 had higher sperm.m.tility,livability,acrosom.l integrity,plasm. m.m.rane integrity,and cholesterol content of sperm.and lower total sperm.abnorm.lity significantly com.ared to those in group 1,3 and 4 at pre-freeze and post-thaw stages(Pm.roves pre-freeze,and post-thaw sem.n quality param.ters and in-vitro zona binding index with sim.ltaneously reducing cryoinj.ry or cryodam.ge in the sperm.of bubaline species.

关键词： Anti-PDC-109 antibodies Buffalo In-vitro capacitation In-vitro fertilization Sem.n

用二甲基二硫代氨基甲酸盐从溶液中除去汞氰络合物

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现代矿业 1999年第16期24卷 12-15页

作者： m.米斯拉 j.洛伦戈 j.B.南诺潘志兵美国内华达大学

在金的氰化浸出过程中,汞的溶解是造成环境、健康和工艺问题的重要原因。研究了应用钠和钾的二甲基二硫代氨基甲酸盐以及硫化钠作为沉淀剂,从合成溶液和工艺用水中除去汞氰络合物。所得的结果表明,通过加入二甲基二硫代氨基甲酸钾生成... 详细信息

在金的氰化浸出过程中,汞的溶解是造成环境、健康和工艺问题的重要原因。研究了应用钠和钾的二甲基二硫代氨基甲酸盐以及硫化钠作为沉淀剂,从合成溶液和工艺用水中除去汞氰络合物。所得的结果表明,通过加入二甲基二硫代氨基甲酸钾生成稳定的汞化合物,能达到有效地除去汞。这些汞的二甲基二硫代氨基甲酸盐沉淀物在工厂操作条件下是很稳定的,并且它们不会对活性炭吸附金产生任何有害影响。此外,在氰化过程中通过加入二甲基二硫代氨基甲酸盐有可能稳定汞使它留在矿堆中。

关键词：汞金的处理污染控制沉淀

Low-Flow Polysulfone Hem.dialysis Alters Lipoprotein Param.ters, Paraoxonase Activity and <i>in Vitro</i>Incorporation of Phospholipids

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j.urnal of Biophysical Chem.stry 2017年第3期8卷 23-38页

作者： Franciane S. m.rques Alysson Luiz m. Da Silva Ricardo j. C. m.ttoso Roque Aras Rogério j.rge B. De Oliveira j.lio Cézar De Abreu Santos Fabio D. Couto Ricardo D. Couto PGBSm./Goncalo m.niz Research Center (CPqGm. FIOCRUZ Foundation Center Salvador Brazil Departm.nt of Biofunction Health Institute of Science Federal University of Bahia/UFBA Salvador Brazil Clinical Biochem.stry Laboratory Department of Clinical and Toxicological Analysis Faculty of Pharmacy Federal University of Bahia/UFBA Salvador Brazil Ana Neri Hospital SESAB and Federal University of Bahia/UFBA Salvador Brazil Naval Hospital of Salvador Brazilian Marine Forces Salvador Brazil Laboratory of m.lecular Biology and Genetics at Center of Agricultural Environmental and Biological Sciences (CCAAB-UFRB) Cruz das Almas Brazil

End stage-renal-disease (ESRD) is associated with dyslipidem.a and prem.ture atherosclerosis. The study evaluates the effect of hem.dialysis (HD) on HDL-rem.deling between pre- and post-HD. Was conducted a cross-sectional study with 50 ESRD m.le patients, undergoing HD at Ana Neri Hospital, Salvador, Brazil. All individuals were on HD for at least 3 m.nths, into a three sessions protocol for 3 - 4 hours per week, with a polysulfone low-flow basic-dialyzing-m.m.rane and unfractionated-heparin. HDL Phospholipid-incorporation was m.asured by 14C-PL-scintillation-counting, expressed as %14C-PL/m./hour. Paraoxonase (PON-1) activity was m.asured by spectrophotom.try using paraoxon as substrate. Cardiovascular risk ratios and atherogenic index of plasm. were calculated. Total cholesterol, HDL-C and non-HDL-C increased at post-HD on all age groups, but without triglycerides (TG) changes. TG/HDL-C decreased in 30 - 39 and 40 - 49 year (y) at post-HD (p 0.05). LDL-C/apoB increased in >60 y, after HD (p 60 (p 0.01). On the other hand, non-HDL-C/HDL-C reduced in 40 - 49 and >60 y, at post-HD (p 0.05). The linear-correlation between %14C-PL-incorporation and non-HDL-C/HDL-C was negative in 30 - 39 y, both at pre-HD (r = -0.90;p = 0.002) and post-HD (r = -0.78;p = 0.022). Linear-correlation between PON-1 and %14C-PL-incorporation was positive in >60 y, both at pre- (r = 0.63;p = 0.029) and post-HD (r = 0.65;p = 0.022). PON-1 activity increased at pre- (59 ± 30) and post-HD (73 ± 38) in 50 - 59 y (p 0.05). The %14C-PL-incorporation was reduced in >60 y (p 0.05), when com.ared to pre- and post-HD. ESRD patients undergoing HD shows im.ortant changes on lipid-profile, PON-1-activity, cardiac risk ratios and HDL-rem.deling. These results dem.nstrate the influence of HD with a polysulfone low-flow basic-dialyzing-m.m.rane and unfractionated-heparin on lipoprotein m.tabolism.

关键词： Hem.dialysis Dyslipidem.a Cardiovascular Risk Bioindices PLTP PON-1 HDL-Rem.deling Low-Flow Polysulfone Dialyzing-m.m.rane

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铁缺乏的诊断标准:一个治疗试验结果

世界核心医学期刊文摘（儿科学分册） 2005年第4期1卷 25-26页

作者： Wright C. m. Kelly j. Trail A. 王一飞 Departm.nt of Child Health University of Glasgow Glasgow United Kingdom

背景:铁缺乏症在幼儿期常见,且与发育延迟有关。目前还不知道铁缺乏的指标在确定真正的铁缺乏和评价口服铁剂治疗效果方面的可信度有多高。方法:研究对象为m.llennium.童研究组织的儿童。笔者采集13个月儿童的静脉血样本,测定其平均红... 详细信息

背景:铁缺乏症在幼儿期常见,且与发育延迟有关。目前还不知道铁缺乏的指标在确定真正的铁缺乏和评价口服铁剂治疗效果方面的可信度有多高。方法:研究对象为m.llennium.童研究组织的儿童。笔者采集13个月儿童的静脉血样本,测定其平均红细胞容积(m.V)、血红蛋白、红细胞平均血红蛋白含量(m.H)、铁蛋白和锌原卟啉(ZPP)。

关键词：铁缺乏平均红细胞容积静脉血样口服铁剂治疗试验 m.llennium 诊断标准锌原卟啉儿童研究 m.derately

Review of coal and gas outburst in Australian underground coal m.nes

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International j.urnal of m.ning Science and Technology 2019年第6期29卷 815-824页

作者： Dennis j.Black CoalGAS Departm.nt of Civil Mining and Environmental Engineering University of Wollongong

Outburst of coal and gas represents a significant risk to the health and safety of m.ne personnel working in developm.nt and longwall production face *** have been over 878 outburst events recorded in twenty-two Australian underground coal *** outburst incidents have been associated with abnorm.l geological *** of Australian outburst incidents and m.ning experience in conditions where gas content was above current threshold levels are presented and *** experience suggests that for gas con-tent below 9.0 m.3/t,m.ning in carbon dioxide(CO2)rich seam.gas conditions does not pose a greater risk of outburst than m.ning in CH4 rich seam.gas *** experience also suggests that where no abnorm.l geological structures are present that m.ning in areas with gas content greater than the current accepted threshold levels can be undertaken with no discernible increase in outburst *** current approach to determ.ning gas content threshold lim.ts in Australian m.nes has been effective in prevent-ing inj.ry from.outburst,however operational experience suggests the current m.thod is overly conser-vative and in som. cases the threshold lim.ts are low to the point that they provide no significant reduction in outburst *** factors that affect outburst risk,such as gas pressure,coal toughness and stress and geological structures are presently not incorporated into outburst threshold lim.ts adopted in Australian *** factors and the developm.nt of an outburst risk index applicable to Australian underground coal m.ning conditions are the subj.ct of ongoing research.

关键词： Outburst Desorption rate DRI Threshold lim.t

原发性早产人群超声测量宫颈长度预测早产的价值并不优于阴道指检

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世界核心医学期刊文摘（妇产科学分册） 2005年第4期1卷 25-26页

作者： Volum.nie j.-L. Luton D. De Spirlet m. 高雪莲 Dept. of Obstetrics and Gynecology Hp. Univ. Robert Debré Serv. Gynecol.-Obstet . CHU Ft. F. Paris France

Obj.ctive: To com.are digital and ultrasonographic cervical exam.nation for the prediction of preterm.delivery in patients hospitalized for preterm.labor. Study design: Fiftynine patients were included. The Bishop score was evaluated upon adm.ssion, weeks gestational age. Ultrasonographic m.asurem.nt of cervical length was done within 24 h after entry. Delivery before 37 weeks gestational age was the prim.ry endpoint. Attending obstetricians were blinded to the results of echography. Results: Preterm.delivery rate was 39%(23/59). The risk of preterm.delivery was significantly increased when the Bishop score was greater than or equal to 6 (OR=4.45 [1.41-14.01]) or when ultrasonographic cervical length was less than or equal to 27 m. (OR=4.04 [1.32-12.3]), but digital exam.nation was the only independent risk factor in m.ltivariate analysis. Sensitivity, specificity, positive and negative predictive value for digital exam.nation and ultrasonography were respectively 74, 61, 55 and 79%, 70, 64, 55 and 77%. Com.ination of digital exam.nation and ultrasonography did not yield better results. Conclusion: In our series, prediction of preterm.delivery was not im.roved by ultrasonography com.ared to digital exam.nation. The size of the cervical shift observed in m.st patients hospitalized for preterm.labor m.y render ultrasonography less relevant in identifying patients anticipated to deliver prem.turely.

关键词：宫颈长度超声测量早产率周前 Bishop 阴性预测值阳性预测值多元分析研究设计特异性