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Chinese journal Of Geochemistry 2010年第3期29卷 261-269页

作者： Al-Hwaiti M.S. Zielinski R.A. Bundham J.R. Ranville J.f. Ross P.E. Environmental Engineering Department Al-Hussein Bin Talal University USGS DenverCO 80225USA Environmental Science and Engineering Division Colorado School of Mines

Phosphogypsum (PG) is a by-product of the chemical reaction called the "wet process" whereby sul-phuric acid reacts with phosphate rock (PR) to produce phosphoric acid, needed for fertilizer production. Through the wet process, some impurities naturally present in the PR become incorporated in PG, including U decay-series radionuclides, are the main important concern which could have an effect on the surrounding environment and pre-vent its safe utilization. In order to determine the distribution and bioavailability of radionuclides to the surrounding environment, we used a sequential leaching of PG samples from Aqaba and Eshidiya fertilizer industry. The results showed that the percentages of 226Ra and 210Pb in PG are over those in the corresponding phosphate rocks (PG/PR), where 85% of the 226Ra and 85% of the 210Pb fractionate to PG. The sequential extraction results exhibited that most of 226Ra and 210Pb are bound in the residual phase (non-CaSO4) fraction ranging from 45%-65% and 55%-75%, respectively, whereas only 10%-15% and 10%-20% respectively of these radionuclides are distributed in the most labile fraction. The results obtained from this study showed that radionuclides are not incorporated with gypsum itself and may not form a threat to the surrounding environment.

关键词：天然放射性核素磷石膏化肥工业赋存状态 226Ra 反应产物化肥生产周围环境

Recovery of some valuable elements from lamprophyre dykes in the Abu Rusheid area, Southeastern Desert, Egypt

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Chinese journal Of Geochemistry 2012年第1期31卷 64-73页

作者： Zaki D.I. Shawky N. El-Sheikh E.M. Ahmed f.Y. Ibrahim M.E. Nuclear Materials Authority El MaadiP.O.Box 530 CairoEgypt Chemistry Dept. Faculty of Science for GirlAl-Azhar UniversityEgypt

In the Abu Rusheid area, Southeastern Desert of Egypt, polymineralized (HREEs, U, Zn and Pb) lam-prophyre dykes are recently recorded. The lamprophyre dykes cut cataclastic rocks along share zones in NNW-SSE trends. The secondary U-minerals are essentially represented by uranophane, kasolite, torbernite and autunite. Ex-perimental work was carried out on the lamprophyre dykes for the recovery of uranium and other valuable elements (e.g. Zn, Pb and Al) from 50 kg of technological sample. The optimum conditions were: 100 g/L sulfuric acid con-centration, 1:5 S/L (solid/liquid) and soaking for 15 days at room temperature. The leaching efficiencies for the re-covery of uranium and other elements like Al, Zn and Pb were 40, 33.6, 98.8 and 78, respectively.

关键词：有价元素煌斑岩岩脉沙漠埃及价值最佳工艺条件实验工作

fatigue strength and microstructure evaluation of Al 7050 alloy wires recycled by spray forming,extrusion and rotary swaging

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Transactions of Nonferrous Metals Society of China 2020年第12期30卷 3195-3209页

作者： joão G.J.de SALVO Conrado RMAfONSO Programa de Pós-graduação em Ciência e Engenharia de Materiais(PPG-CEM) Universidade Federal de São Carlos(UFSCar)Rod.Washington LuizKm 23513565-905 São Carlos-SPBrazil Divisão de Materiais Instituto de Aeronáutica e EspaçoCTAPraça Marechal Eduardo Gomes5012228-904 São Josédos Campos-SPBrazil Departamento de Engenharia de Materiais(DEMa) Universidade Federal de São Carlos(USFCar)Rod.Washington LuizKm 23513565-905 São Carlos-SPBrazil

Recycled high-strength aluminum alloys have limited use as structural materials due to poor mechanical properties. Spray forming remelting followed by hot extrusion is a promising route for reprocessing 7 xxx alloys. The 7050 alloy machining chips were spray formed, hot extruded, rotary swaged and heat-treated in order to improve mechanical properties. Microstructures, tensile properties and fatigue strength results for a 2.7 mm-diameter recycled wire are presented. Secondary phases and precipitates were investigated by XRD, SEM, EBSD, TEM and DSC. As-swaged and heat-treated(solution and aging) conditions were evaluated. Mechanical properties of both conditions outperformed AA7050 aerospace specification. Substantial grain refinement resulted from the extensive plastic deformation imposed by rotary swaging. Refined micrometric and sub-micrometric Al grains, as well as coarse and fine intermetallic precipitates were observed. Subsequent solution treatment resulted in a homogeneous, recrystallized and equiaxed microstructure with grain size of 9 μm. Nanoscale GP(I) zones and η′ phase precipitates formed after aging at 120 ℃, imparting higher tensile(586 MPa) and fatigue(198 MPa) strengths.

关键词： Al−Zn−Mg−Cu alloy spray forming thermomechanical processing microstructure fatigue

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Vincent van Gogh

Vincent van Gogh

Ultrasound imaging of abdominal sarcoidosis: State of the art

作者： Metzger Rainer. Walther Ingo f. Hulse Michael.

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World journal of Clinical Cases 2019年第7期7卷 809-818页

作者： Claudio Tana Cosima Schiavone Andrea Ticinesi fabrizio Ricci Maria Adele Giamberardino francesco Cipollone Mauro Silingardi Tiziana Meschi Christoph f Dietrich Internal Medicine and Critical Subacute Care Unit Medicine Geriatric-Rehabilitation Department and Department of Medicine and Surgery University-Hospital of Parma Department of Internistic Ultrasound "G. D’Annunzio" University of Chieti Department of Imaging and Clinical Sciences Institute for Advanced Biomedical Technologies "G. D’Annunzio" University of Chieti Geriatrics Clinic Department of Medicine and Science of Aging"G. D’Annunzio" University of Chieti Medical Clinic Department of Medicine and Science of Aging "G.D’Annunzio" University of Chieti Internal Medicine Unit Maggiore Hospital of Bologna Caritas-Krankenhaus Bad Mergentheim Academic Teaching Hospital of the University of Würzburg

Since it has been recognized that sarcoidosis(SA) is not an exclusive disorder of the lungs but can also affect other organs such as the liver and spleen, efforts have been made to define specific imaging criteria for the diagnosis of the single organ involvement, and the concept has been reinforced that the exclusion of alternative causes is important to achieve the correct diagnosis. Ultrasound(US)is a useful tool to evaluate patients with suspected abdominal SA, such as of the liver, spleen, kidney, pancreas and other organs, showing findings such as organomegaly, focal lesions and lymphadenopathy. While the diagnosis of abdominal SA is more predictable in the case of involvement of other organs(e.g.,lungs), the problem is more complex in the case of isolated abdominal SA. The recent use of contrast-enhanced ultrasound and endoscopic ultrasound elastography has provided additional information about the enhancement patterns and tissue rigidity in abdominal SA. Here we critically review the role of US in abdominal SA, reporting typical findings and limitations of current evidence and by discussing future perspectives of study.

关键词： Sarcoidosis Sarcoid lesions Granulomatous disorders Liver Spleen Rare diseases Ultrasound Contrast-enhanced ultrasound

Occultocarpon,a new monotypic genus of Gnomoniaceae on Alnus nepalensis from China

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fungal Diversity 2012年第1期52卷 99-105页

作者： Luis C.Mejía Amy Y.Rossman Lisa A.Castlebury Zhu L.Yang James f.White Jr USDA Agricultural Research ServiceSystematic Mycology&Microbiology LaboratoryB010A10300 Baltimore Ave.BeltsvilleMD 20705USA Department of Plant Biology and Pathology Rutgers UniversityNew BrunswickNJ 08901USA Key Laboratory of Biodiversity and Biogeography Kunming Institute of BotanyChinese Academy of SciencesKunming 650204(Yunnan ProvincePeople’s Republic of China Smithsonian Tropical Research Institute Apartado0843-03092BalboaAnconRepublic of Panama

Microfungi in the Gnomoniaceae(Diaporthales,Ascomycetes)comprise species commonly reported as pathogens and endophytes on trees and herbaceous hosts primarily from temperate forests of North America,Europe,and *** diversity of Gnomoniaceae in China is poorly known,although several plant families that occur there specifically the Betulaceae are considered important *** exploratory trip to Yunnan,China,resulted in the discovery of several members of the *** this paper a new monotypic genus,Occultocarpon and its species,***,are described and illustrated.A phylogeny based on three genes(LSU,rpb2,tef1-α)reveals that *** belongs to the Gnomoniaceae and forms a branch distinct from the currently known *** ailaoshanense is characterized by perithecia with thin,central to eccentric necks in groups embedded in a stroma and oblong elliptical-elongated,one-septate *** ailaoshanense occurs on the bark of branches of Alnus nepalensis(Betulaceae)in Yunnan,China.

关键词： Ascomycota Betulaceae DiaporthaleslGnomoniaceae Systematics Yunnan

MutL homolog 1 methylation and microsatellite instability in sporadic colorectal tumors among filipinos

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World journal of Gastrointestinal Oncology 2021年第12期13卷 2101-2113页

作者： Loraine Kay D Cabral Cynthia A Mapua filipinas f Natividad Caecilia H C Sukowati Edgardo R Cortez Ma Luisa D Enriquez Research and Biotechnology Group St.Luke's Medical CenterQuezon City 1112Philippines Centro Studi fegato Fondazione Italiana Fegato ONLUSTrieste 34149Italy Department of Surgery St.Luke's Medical CenterQuezon City 1112Philippines Center for Natural Science and Environmental Research De La Salle UniversityManila 1004Philippines

BACKGROUND Colorectal cancer(CRC)ranks third in terms of incidence and second in mortality *** CRC,the silencing of mismatch repair genes,including the mutL homolog 1(hMLH1)has been linked to microsatellite instability(MSI),the lengthening or shortening of microsatellite *** limited data have been presented so far on the link of hMLH1 methylation and MSI in Southeast Asia populations with sporadic CRC,and on its clinical *** To investigate the significance of the MSI status and hMLH1 methylation in CRC filipino *** fifty-four sporadic CRC patients with complete clinical data were included in this *** DNA from CRC tumor biopsies and their normal tissue counterparts were profiled for MSI by high resolution melting(HRM)analysis using the Bethesda Panel of Markers(BAT25,BAT26,D2S123,D5S346,and D17S250).hMLH1 methylation screening was performed using bisulfite conversion and methylation specific polymerase chain *** analysis was conducted to calculate their associations to clinicopathological characteristics and survival relevance(Kaplan-Meier curves and the log-rank test).RESULTS hMLH1 methylation was observed in 9%and 35%of CRC and normal samples,*** incidence of consistently methylated hMLH1 found in both normal and CRC was noticed for relation to location of tumor(Pfor MSI status,D2S123 the most common unstable microsatellite and MSI-high(MSIH)was the most common MSI profile,counted for 46%and 50%of normal and CRC tissues,*** presence of MSI-low(MSI-L)and microsatellite stable(MSS)was 43%and 11%for normal,and 31%and 19%for CRC *** mean month of patients’survival was shorter in patients whose normal and tumor tissues had methylated compared to those with unmethylated hMLH1 and with MSI-H compared to those with MSI-L/MSS(Pficant difference in Kaplan-Meier with log-rank *** data indicated that hMLH1 methylation

关键词： Sporadic colorectal cancer DNA methylation Microsatellite instability Population genetic Colorectal cancer

维苏威和武尔卡诺火山碎屑物中磷灰石挥发组分的研究

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矿物学报 2011年第2期31卷 180-184页

作者：刘羽 Stoppa f. 福州大学紫金矿业学院 Dipartimento Scienze della Terra Università G.d'AnnunzioChieti66013Italy

磷灰石中挥发分的类质同象替换可以反映其结晶时岩浆体系的成分特点。采用扫描电镜、能谱、电子探针、X射线单晶晶胞参数测定和红外、拉曼光谱,对维苏威和武尔卡诺火山碎屑物中磷灰石进行了初步研究,发现其Ca、P位置上不出现替换,主要... 详细信息

磷灰石中挥发分的类质同象替换可以反映其结晶时岩浆体系的成分特点。采用扫描电镜、能谱、电子探针、X射线单晶晶胞参数测定和红外、拉曼光谱,对维苏威和武尔卡诺火山碎屑物中磷灰石进行了初步研究,发现其Ca、P位置上不出现替换,主要替换形成于通道位置上。武尔卡诺磷灰石低硫富Cl,晶胞参数c/a值很小,在低压高温下形成;而维苏威磷灰石含硫稍多,通道离子主要由OH-f组成,形成于压力较大、温度较低的环境,Cl趋向于在早期喷发物中富集,而f则趋向于在晚期喷发物中富集。

关键词：磷灰石挥发分结构通道替换

A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+T Cell Epitope from SARS-CoV-2—Hubei Province,China,2021

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China CDC weekly 2022年第5期4卷 83-87,I0005页

作者： Jie Zhang Dan Lu Min Li Maoshun Liu Sijia Yao Jianbo Zhan William J.Liu George f.Gao NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Savaid Medical School University of Chinese Academy of SciencesBeijingChina College of Laboratory Medicine and Life Sciences Wenzhou Medical UniversityWenzhouZhejiangChina Hubei Provincial Center for Disease Control and Prevention WuhanHubeiChina

Introduction:Similar to antibody detection,severe acute respiratory syndrome coronavirus type 2(SARSCoV-2)-specific T-cell response evaluation is also pivotal among the coronavirus disease 2019(COVID-19)convalescents and the vaccinated ***(N)protein is one of the main structural proteins of SARS-CoV-2 and can trigger T-cell responses in ***:An overlapping peptide pool covering the full length of the N protein was designed,peptides with positive T-cell activating potency in COVID-19 convalescents were screened,and CD8^(+)T cell epitopes were further *** epitope was used to detect the SARS-CoV-2-specific CD8^(+)T cell responses in COVID-19 convalescents based in intracellular cytokine staining and tetramer staining in flow ***:A human leukocyte antigen A(HLAA)*1101-restricted CD8^(+)T cell epitope,which could stimulate the production of IfN-γvia peripheral blood mononuclear cells(PBMCs)of the convalescents was defined,and the tetramer generated with this epitope could detect SARS-CoV-2-specific T cells in the PBMCs of the *** structural investigation eliminated that the epitope was a typical HLA-A^(*)1101-restricted T-cell epitope which was conserved among all the ***:The newly identified SARS-CoV-2-derived T-cell epitope was helpful to detect the cellular immunity against different sarbecoviruses including SARS-CoV and *** study provided an evaluation method and also a peptide candidate for the research and development of T-cell based vaccine for the virus.

关键词： restricted immunity Human