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当代外语研究 1998年第10期 4-5页

作者： Ellen f.Licking 许蓉

在平均气温零下68°,降水量不到4英寸的南极,永久冰冻的厚厚冰层中居然存在100种不同的微生物,这一奇迹的发现使人们想到对与南极自然环境相似的火星和木星的探测有可能取得极其重大的突破:外星生命的存在不无可能。

关键词：光养生物异养生物

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熊彼得与凯恩斯

经济译文 1991年第3期 12-16页

作者：德.,彼f

Evaluating seroprevalence to circumsporozoite protein to estimate exposure to three species of Plasmodium in the Brazilian Amazon

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Infectious Diseases of Poverty 2018年第1期7卷 448-459页

作者： Virginia Araujo Pereira Juan Camilo Sanchez-Arcila Mariana Pinheiro Alves Vasconcelos Amanda Ribeiro ferreira Lorene de Souza Videira Antonio Teva Daiana Perce-da-Silva Maria Teresa Queiroz Marques Luzia Helena de Carvalho Dalma Maria Banic Luiz Cristovao Sobrino Porto Joseli Oliveira-ferreira Laboratory of Immunoparasitology Oswaldo Cruz Institute/FiocruzAv.Brasil 4365ManguinhosRio de JaneiroBrazil Institute of Infectology Emilio Ribas São PauloSao PauloBrazil Laboratory of Immunodiagnosis Departament of Biological SciencesNational School of Public Health/FiocruzRio de JaneiroBrazil Laboratory of Clinical Immunology Oswaldo Cruz Institute/FiocruzRio de JaneiroBrazil Laboratory of Histocompatibility and Cryopreservation–HLA of DHE/IBRAG/UERJ Rio de JaneiroBrazil Molecular Biology and Malaria Immunology Research Group Centro de Pesquisas Rene Rachou/FiocruzBelo HorizonteMinas GeraisBrazil

Background:Brazil has seen a great decline in malaria and the country is moving towards ***,for eventual elimination,the control program needs efficient tools in order to monitor malaria exposure and *** this study,we aimed to evaluate whether seroprevalence to the circumsporozoite protein(CSP)is a good tool for monitoring the exposure to and/or evaluating the burden and distribution of Plasmodium species in the Brazilian ***:Cross-sectional surveys were conducted in a rural area of Porto Velho,Rondônia *** infection was detected by microscopy and polymerase chain *** to the sporozoite CSP repeats of Plasmodium vivax,***,and ***(PvCS,PfCS,and PmCS)were detected using the enzyme-linked immunosorbent assay *** leukocyte antigen(HLA)-DRB1 and DQB1 genes were typed using Luminex®xMAP®***:The prevalence of immunoglobulin G against *** CSP peptide(62%)was higher than ***(49%)and ***(46%)CSP *** of the studied individuals had antibodies to at least one of the three peptides(72%),34%had antibodies to all three peptides and 28%were *** the majority of the population was not infected at the time of the survey,74.3%of parasite-negative individuals had antibodies to at least one of the ***,among individuals carrying the haplotypes DRB1*04~DQB1*03,there was a significantly higher frequency of PfCS responders,and DRB1*16~DQB1*03 haplotype for PvCS and PfCS *** contrast,HLA-DRB1*01 and HLA-DQB1*05 allelic groups were associated with a lack of antibodies to *** and *** CSP repeats,and the haplotype DRB1*01~DQB1*05 was also associated with non-responders,including non-responders to ***:Our results show that in low transmission settings,naturally acquired antibody responses against the CSP repeats of ***,***,and *** in a single cross-sectional study may n

关键词： Malaria Circumsporozoite protein Serological marker Human leucocyte antigen IgG antibody Porto Velho Rondônia Brazil

THERMAL DECOMPOSITION BEHAVIOR Of AMMONIUM THIO TUNGSTATE in H_2

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Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 1171-1174页

作者： P. f. Xing , L. f. Ma , K. Quan and Y. C. Zhai School of Materials and Metallurgy , Northeastern University , Shenyang 110006 , China

The ther m al deco m position mechanism of a m m oniu m thiotungstate of the size of 63 ～75 μmin H2 has been investigated by D T A and X R D methods . The ther m al deco m position activationenergies and the orders of a m m oniu m thiotu ngstate were calculated by means of Kissinger , freem an Carroll and Coast Redfern m ethods . It w as also obtained that therm al deco m posi tion is cond ucted according to four reaction equations :( N H4) 2 W S4· H2 O(s) ( N H4) 2 W S4(s) + H2 O(g) W S2(s) + 2 N H3(g) + H2(g) + 2 S(s) + H2 O(g) W S2(s) + 2 N H3(g) + 2 H2 S(g) + H2 O(g) W S2(s) + W(s) + 2 N H3(g) + 2 H2 S(g) + H2 O(g) .

关键词： a m moniu m thiotungstate ther m al deco m position W S2 H2

Methylation of DAPK and THBS1 genes in esophageal gastric-type columnar metaplasia

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World Journal of Gastroenterology 2016年第18期22卷 4567-4575页

作者： Roberto Herrera-Goepfert Luis f Onate-Ocana José Luis Mosqueda-Vargas Luis A Herrera Clementina Castro Julia Mendoza Rodrigo González-Barrios Department of Pathology Instituto Nacional de Cancerologia (INCan) 10480 Mexico DF Mexico Clinical Research Division Instituto Nacional de Cancerologia (INCan) 10480 Mexico DF Mexico Unidad de Investigacion Biomedica en Cancer Instituto Nacional de Cancerologia (INCan)-Instituto de Investigaciones Biomedicas (IIB) Universidad Nacional Autonoma de Mexico (UNAM) 14080 Mexico DF Mexico

AIM: To explore methylation of DAPK, THBS1, CDH-1, and p14 genes, and Helicobacter pylori(H. pylori) status in individuals harboring esophageal columnar ***: Distal esophageal mucosal samples obtained by endoscopy and histologically diagnosed as gastric-type(non-specialized) columnar metaplasia, were studied thoroughly. DNA was extracted from paraffin blocks, and methylation status of deathassociated protein kinase(DAPK), thrombospondin-1(THBS1), cadherin-1(CDH1), and p14 genes, was examined using a methyl-sensitive polymerase chain reaction(MS-PCR) and sodium bisulfite modification protocol. H. pylori cag A status was determined by ***: In total, 68 subjects(33 females and 35 males), with a mean age of 52 years, were included. H. pylori cag A positive was present in the esophageal gastric-type metaplastic mucosa of 18 individuals. DAPK, THSB1, CDH1, and p14 gene promoters were methylated by MS-PCR in 40(58.8%), 33(48.5%), 46(67.6%), and 23(33.8%) cases of the 68 esophageal samples. H. pyloristatus was associated with methylation of DAPK(P = 0.003) and THBS1(P = 0.019).CONCLUSION: DNA methylation occurs in cases of gastric-type(non-specialized) columnar metaplasia of the esophagus, and this modification is associated with H. pylori cag A positive infection.

关键词： DNA methylation Esophageal columnar metaplasia Thrombospondin-1 Death-associated protein kinase Helicobacter pylori cagA

Improving the Thermal Efficiency and Performance of Refrigeration Systems:Numerical-Experimental Analysis of Minimization of frost formation

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Energy Engineering 2022年第5期119卷 1771-1788页

作者： felipe Mercês Biglia Raquel da Cunha Ribeiro da Silva fátima deMoraes Lino Kamal Abdel Radi Ismail Thiago Antonini Alves federal University of Technology-Parana(UTfPR) CuritibaBrazil federal University of Technology-Parana(UTfPR) GuarapuavaBrazil University of Campinas(UNICAMP) CampinasBrazil federal University of Technology-Parana(UTfPR) Ponta GrossaBrazil

The frost growth on cold surfaces in evaporators is an undesirable phenomenon which becomes a problem for the thermal efficiency of the refrigeration systems because the ice layer acts as a thermal insulation,drastically reducing the rate of heat transfer in the *** accumulation implies an increase in energy demand and a decrease in the performance of various components involved in the refrigeration process,reducing its efficiency and making it necessary to periodically remove the frost,resulting in expenses for the defrost *** the present work,a numerical-experimental analysis was performed in order to understand the formation process of porous ice in flat plates with different surface treatments and *** understanding is of utmost importance to minimize the formation of porous ice on cold surfaces and improve equipment efficiency and *** this context,a low-cost experimental apparatus was developed,enabling an experimental analysis of the phenomenon under *** environmental conditions evaluated are the temperature of the cold surface,roomtemperature,humidity,and air *** material of the surfaces under study are aluminum,copper,and brass with different surface finishes,designated as smooth,grooved(hydrophilic),and varnished(hydrophobic).The numerical-experimental analysis demonstrates measurements and simulations of the thickness,surface temperature,and growth rate of the porous ice layer as a function of the elapsed *** numerical results were in good agreement with the experimental results,indicating that the varnished surface,with hydrophobic characteristics,presents greater difficulty in providing the ***,the results showed that application of a coating allowed a significant reduction on the frost formation process contributing to the improvement of thermal efficiency and performance of refrigeration systems.

关键词： frost layer growth frost thickness minimization of frost hydrophobic surface refrigeration systems

LONG-LIfE ＆ COST-EffECTIVE BASE COURSES BY OPTIMIZING AGGREGATES＆ USING SBS MODIfIED BITUMENS

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LONG-LIFE ＆ COST-EFFECTIVE BASE COURSES BY OPTIMIZING AGGRE...

ISAP2012重载沥青路面和桥面铺装专题会议

作者： f.OLARD EIffAGE Travaux Publics Research ＆ Development Department

＜正＞Aggregate packing concepts initially developed in the field of high-performance cement concretes were transposed to the field of asphalt *** concepts,associated with the use of the gyratory compactor on aggregates only,enabled the development of a new laboratory design procedure of dense high-modulus asphalt ***,the use of only 4%of SBS modified bitumen combined with such an optimized aggregate packing leads to the design of the so-called GB5（?） material,showing excellent compactability,very high stiffness modulus and above all high fatigue resistance in a single

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12BΛ High Resolution Hypernuclear Spectroscopy at Jlab, HallA

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12BΛ High Resolution Hypernuclear Spectroscopy at Jlab, Hal...

The 6th China-Nuclear Physics Symposium

作者： f. Garibaldi ISS/INfN Italy

Experiment E94-107: "systematic" study of p shell light hypernuclei The experiment required important modifications on the Hall A apparatus Good quality data on 12C, 9Be and 16O targets (12BΛ , 9LiΛ and 16NΛ hypernuclei) New experimental equipment showed excellent performance Data on 12C show new information. for the

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Nanomechanics of Protein aggregation under biological conditions

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Nanomechanics of Protein aggregation under biological condit...

第18届国际真空大会

作者： f. Besenbacher Interdisciplinary Nanoscience Center （iNANO） Department of Physics and Astronomy University of Aarhus

Protein aggregation process shows a remarkable degree of structural polymorphism. Such polymorphism leads to significant differences in both aggregate stability and conformation. AfM shows morphological changes of the fibril aggregates deposited on surfaces at different stages during the aggregation process. The aggregate structure reflects the mechanical and dynamical properties of proteins. force measurements allow extending AfM observations of the actual fibril growth with an in-depth analysis of the underlying physical features of these fibrils, such as fibril flexibility, strength, elasticity, and other mechanical properties. By applying recently developed Microsecond force Spectroscopy （μfS）, one can applied it to quantitative nanomechanical imaging on protein fibrils, which allows determining the mechanical properties of fibrils of nanoscale dimensions （nanofibrils）. μfS will thus allow monitoring the morphological changes and mechanical changes, and elucidating the origin of the cascade event leading to fibrillation.

关键词： Stiffness mapping fibrillation AfM Microsecond force Spectroscopy

THE PROBLEM Of MAINTENANCE Of STRENGTH, LIfETIME AND SAfETY Of THE STRUCTURAL COMPONENTS OPERATIONAL NPP fROM ITEMS Of A SYSTEM APPROACH

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THE PROBLEM OF MAINTENANCE OF STRENGTH, LIFETIME AND SAFETY ...

第十八届国际反应堆结构力学大会

作者： A.f. Getman Coordination centre on reliability safety and lifetime of the equipment and pipelines of nuclear stations

＜正＞ The strength of the structural components and pipelines NPP determines largely their lifetime, radiation and nuclear safety. As shows world experience of operation NPP, in a series of cases during operation the local damages, breaks and destructions of elements of the equipment and pipelines emerge. These cases force maintaining organizations to execute on NPP large volumes of the control, repair and modernizing of the equipment and pipelines. These activities require large material inputs （net less than 50% of the cost of operation NPP）, however not always are effective and in a series of cases do not allow to reach required of level reliability and safety.

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