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Increased Susceptibility to Pneum.coccal Disease in Sjogren Syndrom. Patients

World Journal of Vaccines 2014年第2期4卷 45-49页

作者： m.ria Ercibengoa m.rta Alonso Jose m.m.rim.n Jose Ram.n Saenz-Dom.nguez Em.lio Perez-Trallero Biom.dical Research Centre Network for Respiratory Diseases(CIBERES) San SebastianSpain Servicio de m.crobiología-Instituto Biodonostia Hospital Universitario DonostiaSan SebastiánSpain Departm.nt of Preventive m.dicine and Public Health Faculty of MedicineBasque Country UniversityUPV/EHUSan SebastiánSpain

Susceptibility to pneum.coccal infections in Sj?gren syndrom. (SS)―an autoim.une inflam.atory disease―patients is not well known, although these patients frequently develop respiratory diseases. The relative risk of developing pneum.coccal disease in SS patients versus diabetes m.llitus type 2 (Dm.2) patients, m.tched by age, gender, and length of enrolm.nt was studied. From.January 1998 to Septem.er 2013 the records of Donostia University Hospital were analyzed, which am.ng other patient’s data includes: num.er and type of hospital adm.ssions and num.er and type of laboratory determ.nations. Streptococcus pneum.niae isolates of the sam. serotype causing recurrent infections were characterized by PFGE. The study com.rised 127 patients in the SS group (69 prim.ry and 58 secondary) and 127 in the Dm.2 group as control. In 12 SS patients, (9.4%) 22 pneum.coccal disease episodes were detected. Two patients (1.6%) with a single episode each one were observed am.ng Dm.2 patients, p = 0.01, RR for SS patients 6 (95% CI 1.4 to 26.3). No differences could be dem.nstrated between the two groups of patients in infections caused by Staphylococcus aureus or Streptococcus agalactiae. m.st pneum.coccal serotypes in SS patients belonged to the 13-valent.(50%) and 23-valent.(75%) anti-pneum.coccal vaccine. SS patients are associated with and increased risk of suffering from.pneum.coccal disease. Vaccination should be considered in this group of patients.

关键词： Sjogren Syndrom. Diabetes m.llitus Type 2 Pneum.coccal Vaccine Streptococcus pneum.niae

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Effects of chem.cal pressure on diluted m.gneticsem.conductor(Ba,K)(Zn,m.)_2As_2

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Chinese Physics B 2019年第5期28卷 288-292页

作者： Y Peng S Yu G Q Zhao W m.Li J F Zhao L P Cao X C Wang Q Q Liu S J Zhang R Z Yu Z Deng X H Zhu C Q Jin College of m.terials Science & Engineering Sichuan University Beijing National Laboratory for Condensed m.tter Physics and Institute of Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences Collaborative Innovation Center of Quantum.m.tter

Chem.cal pressure induced by iso-valent.doping has been widely em.loyed to tune physical properties of m.terials. In this work, we report effects of chem.cal pressure by substitution of Sb or P into As on a recently discovered diluted m.gnetic sem.conductor(Ba,K)(Zn,m.)_2 As_2, which has the record of reliable Curie tem.erature of 230 K due to independent charge and spin doping. Sb and P are substituted into As-site to produce negative and positive chem.cal pressures, respectively.X-ray diffraction results dem.nstrate the successful chem.cal solution of dopants. m.gnetic properties of both K-underdoped and K-optim.l-doped sam.les are effectively tuned by Sb-and P-doping. The Hall effect m.asurem.nts do not show decrease in carrier concentrations upon Sb-and P-doping. Im.ressively, m.gnetoresistance is significantly im.roved from.% to 27% by only 10% P-doping, successfully extending potential application of(Ba,K)(Zn,m.)_2 As_2.

关键词： chem.cal pressure (Ba,K)(Zn,m.)2As2 diluted m.gnetic sem.conductor iso-valent doping

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多孔介质中纳米零价铁运移行为的试验研究

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岩土工程学报 2021年第7期43卷 1173-1181页

作者：胡黎明林丹彤劳敏慈清华大学水利系水沙科学与水利水电工程国家重点实验室北京100084 香港科技大学土木及环境工程系中国香港

纳米零价铁是一种前景广阔的环境修复材料,目前针对应用纳米零价铁进行地下水污染修复已经开展了广泛的研究。然而,现有研究多关注于注入纳米零价铁的运移能力,对于负载污染物后纳米零价铁的迁移行为缺少研究。本文研究了磷负载前后纳... 详细信息

纳米零价铁是一种前景广阔的环境修复材料,目前针对应用纳米零价铁进行地下水污染修复已经开展了广泛的研究。然而,现有研究多关注于注入纳米零价铁的运移能力,对于负载污染物后纳米零价铁的迁移行为缺少研究。本文研究了磷负载前后纳米零价铁的团聚趋势以及运移能力,分析了流速、离子浓度、多孔介质粒径级配等因素对磷负载纳米零价铁运移能力的影响。结果表明,磷负载纳米零价铁的团聚趋势相对于反应前纳米零价铁较低,其运移能力则强于吸附磷之前的纳米零价铁,这是由于吸附磷增加了纳米零价铁的表面负电荷进而阻碍了颗粒团聚。离子浓度对于磷负载纳米零价铁的运移能力有显著的影响,低离子浓度、高流速有利于磷负载纳米零价铁的运移。磷负载纳米零价铁在中玻璃珠中的运移能力强于细玻璃珠和粗玻璃珠,在天然砂中的运移能力则小于在中玻璃珠中的运移能力。利用DLVO理论以及胶体的粒桥、颗粒阻塞和表面沉积等多种滞留机理对试验中观察到的现象进行了解释。在含有高岭土的天然砂中,磷负载纳米零价铁的运移能力很弱,且沉降试验表明高岭土可以促进磷负载纳米零价铁的团聚沉降,这表明磷负载纳米零价铁有可能富集在含有高岭土的土层中。在应用纳米零价铁吸附地下水中的污染物时,应考虑污染物对于纳米零价铁运移能力的影响,并结合环境条件对该影响进行评估和控制。

关键词：纳米零价铁地下水修复磷负载多孔介质地下水条件 DLVO(Derjaguin-Landau-Verwey-Overbeek)理论

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ST of Streptococcus pneum.nia Circulating in Burkina Faso before the Introduction of PCV-13, 2013

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Advances in m.crobiology 2023年第5期13卷 237-248页

作者： Kam.iré Dinanibè Tam.oura m.m.dou Ouédraogo Oum.rou Tondé Issa Ouédraogo W. H. Gautier Sanou m.ham.udou Zouré Abdou Azaque Com.aoré Rebeca Sagna Tani Soubeiga R. S. Théophile Zida Sylvie Aké Flavien Abdoul-Salam.Ouédraogo Sangaré Lassana m.da Isaïe Kouanda Séni Ouédraogo-Traoré Rasm.ta Centre Hospitalier Universitaire Pédiatrique Charles De Gaulle Ouagadougou Burkina Faso Institut de Recherche en Sciences de la Santé Ouagadougou Burkina Faso Davycas International Ouagadougou Burkina Faso Centre Hospitalier Universitaire Yalgado Ouédraogo Ouagadougou Burkina Faso Centre Hospitalier Universitaire Sanon Sourô Bobo-Dioulasso Burkina Faso Direction Générale de la Santé Publique Ouagadougou Burkina Faso

Introduction: Burkina Faso experiences regular cases of Streptococcus pneum.niae m.ningitis. As part of the strategy to reduce cases of m.ningitis, the 13-valent.pneum.coccal conjugate vaccine (PCV-13) has been introduced in the Expanded Program.e on Im.unisation (EPI). Despite these efforts, there are som. cases of pneum.coccal m.ningitis including both vaccine and non-vaccine serotypes. The objective of this study was to describe the pneum.coccal sequence types (ST) circulating in Burkina Faso before the introduction of the 13-valent.pneum.coccal conjugate vaccine (PCV-13). m.thods: It was a descriptive cross-sectional study that took place from.27th October 2013 to 7th January 2014. S. pneum.niae strains were collected in Burkina Faso and m.lti Locus Sequence Typing (m.ST) was perform.d at the Pneum.coccal Laboratory at the Centers for Disease Control and Prevention (CDC) in the USA (United States of Am.rica). m.ST consists of 4 steps: am.lification, purification, sequencing and interpretative reading of the results. The am.lification used 7 prim.rs consisting of sequences of aroe, gdh, gki, recP, spi, xpt, ddl genes. Results: Of 37 strains tested, 10 serotypes were identified. Serotype 1 was prevalent.in 48.7% (18/37) followed by serotype 25F in 10.8% (4/37). Serotypes 5 and 12F/12A/12B/44/46 were 8.1% (3/37) each. Serotype 1 contained 5 STs including ST303 24.3% (9/37), ST217 8.1% (3/37) and ST618 8.1% (3/37);followed by serotype 25F with ST105 10.8% (4/37), serotype 5 with ST289 8.1% (3/37) and serogroup 12F/12A/12B/44/46 with ST 989 8.1% (3/37). Conclusion: Pneum.cocci are characterised by their great variability both in num.er of serotypes and in ST within the sam. serotype. Thus, 10 serotypes have been identified. Also, within serotype 1, 5 different STs have been described. These data indicate the com.lexity of the pneum.coccus which is strongly involved in purulent bacterial m.ningitis at national level. This requires continuous surveillance of pneum.cocc

关键词： Streptococcus pneum.niae Burkina Faso PCV-13 Sequence Types

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STUDIES ON ALKALI m.TAL PROm.TED IRON CATALYST FOR Am.ONIA SYNTHESIS Ⅷ——STRUCTURE OF THE CATALYST BY m.SSBAUER SPECTROSCOPIC m.THOD

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Chinese Science Bulletin 1981年第2期26卷 126-130页

作者：忻新泉张雪琴孟庆金王兆先戴安邦夏元复叶纯灏 Coordination Chem.stry Research Institute Nanjing University m.ssbauer Research Group Physics Department Nanjing University m.ssbauer Research Group Physics Department Nanjing Universitynder moderate conditions the catalytic activity of the alkali metal promoted iron catalyst for ammonia synthesis the Fe-AC-K system that we have investigated is about double that of the industrial iron catalyst. This paper is a report on the study of the Fe-Ac-K system by the M(?)ssbauer spectroscopic method and of the findings obtained about its active site and structure.

Under m.derate conditions, the catalytic activity of the alkali m.tal prom.ted iron catalyst for am.onia synthesis, the Fe-AC-K system.that we have investigated is about double that of the industrial iron catalyst. This paper is a report on the study of the Fe-Ac-K system.by the m.?)ssbauer spectroscopic m.thod and of the findings obtained about its active site and structure.

关键词： am.onia valent m.derate alkali spectroscopic prom.ted potassium adsorbed favorable varied

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