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114篇 您的检索式:作者名="Elvis"
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1Pulmonary vein stenosis:Etiology,diagnosis and management显示文摘Pulmonary vein stenosis(PVS) is rare condition characterized by a challenging diagnosis and unfavorable prognosis at advance stages. At present, injury from radiofrequency ablation for atrial fibrillation has become the main cause of the disease. PVS is characterized by a progressive lumen size reduction of one or more pulmonary veins that, when hemodynamically significant, may raise lobar capillary pressure leading to signs and symptoms such as shortness of breath, cough, and hemoptysis. Image techniques(transesophageal echocardiography, computed tomography, magnetic resonance and perfusion imaging) are essential to reach a final diagnosis and decide an appropriate therapy. In this regard, series from referral centers have shown that surgical and transcatheter interventions may improve prognosis. The purpose of this article is to review the etiology, assessment and management of PVS.Pablo Pazos-López Cristina García-Rodríguez Alba Guitián-González Emilio Paredes-Galán María ángel De La Guarda álvarez-Moure Marta Rodríguez-álvarez José Antonio Baz-Alonso Elvis Teijeira-Fernández Francisco Eugenio Calvo-Iglesias Andrés íniguez-Romo 2016World Journal of Cardiology2016,8,1:6
2Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings显示文摘The aim of this study was to determine the structural, compositional, and mineralogical composition of carbonatitic copper sulfide concentrator plant streams. Three samples, each from a different stream(run of mine(ROM), concentrate, and tailings) of a copper concentrator were characterized using various techniques, including stereomicroscopy, X-ray fluorescence, X-ray diffraction, Fourier transform infrared(FTIR) spectroscopy, scanning electron microscopy(SEM) in conjunction with energy-dispersive X-ray spectroscopy(EDS), and optical microscopy. The results reveal that each stream possesses its own unique compositional features. Carbonate minerals associated with calcite and dolomite, followed by quartz, remain the major minerals in both the ROM and tails streams. In the ROM stream, chalcopyrite appears to occur as veins within the carbonatite-hosting ore body. Mineral phase mutation was discovered in the tails stream because magnetite formerly identified in the ROM as the primary iron oxide had evolved into hematite. This metamorphosis was likely promoted by the concentration process. The concentration process was effective, upgrading the chalcopyrite content from 2 wt% in the ROM stream to 58 wt% in the concentrate stream; it was accompanied by bornite(4 wt%), anilite(3 wt%), and digenite(2.5 wt%). In addition, the concentrate stream exhibited properties distinctive from those of the other streams. The FTIR analysis showed the existence of a sulfide group related to the chalcopyrite mineral. Free chalcopyrite grains were observed in the concentrate by SEM analysis, and their mineral presence was supported by the EDS analysis results. All characterization techniques corresponded well with each other regarding the structure, chemistry, and composition of the samples.Kolela J Nyembwe Elvis Fosso-Kankeu Frans Waanders Kasongo D Nyembwe 2019International Journal of Minerals,Metallurgy and Materials2019,26,2:3
3不同pH值硫酸铁溶液中碳酸盐岩型黄铜矿的浸出机理显示文摘在pH值0.5~2.5、温度25℃和时间12 h的条件下,研究碳酸盐岩型黄铜矿在H_(2)SO_(4)−Fe_(2)(SO_(4))_(3)−FeSO_(4)−H_(2)O体系中的溶解行为。实验所用的颗粒粒度为53~75μm。在所有pH条件下,Cu的回收率均低于15%。浸出渣的XRD、SEM−EDS和光学显微镜(OM)分析结果表明,溶解过程中形成了中间相。pH为0.5和1.0时的中间相分别是Cu_(3.39)Fe_(0.61)S_(4)和Cu_(2)S,而pH值为1.5和1.8时的主要矿物为Cu_(5)FeS_(4)。热力学模拟预测产物的生成顺序为CuFeS_(2)→Cu_(5)FeS_(4)→Cu_(2)S→CuS。Cu_(5)FeS_(4) and Cu_(2)S为可溶性中间相,而CuS和Cu_(3.39)Fe_(0.61)S_(4)是难溶中间相,在整个溶解过程中不断积累。所得结果表明,CuFeS_(2)浸出过程中CuS和Cu_(3.39)Fe_(0.61)S_(4)的生成有助于形成钝化膜。Kolela J NYEMBWE Elvis FOSSO-KANKEU Frans WAANDERS Martin MKANDAWIRE 2021Transactions of Nonferrous Metals Society of China2021,31,7:2
4Preventing masks from becoming the next plastic problem显示文摘Face masks help prevent the spread of coronavirus and other diseases,and mass masking is recommended by almost all health groups and countries to control the COVID-19 pandemic(Brooks et al.,2020).Recent studies estimated an astounding 129 billion face masks being used globally every month(3 million/minute)and most are disposable face masks made from plastic microfibers(Prata et al.,2020).With increasing reports on inappropriate disposal of masks,it is urgent to recognize this potential environmental threat and prevent it from becoming the next plastic problem.Elvis Genbo Xu Zhiyong Jason Ren 2021Frontiers of Environmental Science & Engineering2021,15,6:2
5The role of genomic structural variation in the genetic improvement of polyploid crops显示文摘Many of our major crop species are polyploids, containing more than one genome or set of chromosomes. Polyploid crops present unique challenges, including difficulties in genome assembly, in discriminating between multiple gene and sequence copies, and in genetic mapping, hindering use of genomic data for genetics and breeding. Polyploid genomes may also be more prone to containing structural variation, such as loss of gene copies or sequences(presence–absence variation) and the presence of genes or sequences in multiple copies(copynumber variation). Although the two main types of genomic structural variation commonly identified are presence–absence variation and copy-number variation, we propose that homeologous exchanges constitute a third major form of genomic structural variation in polyploids. Homeologous exchanges involve the replacement of one genomic segment by a similar copy from another genome or ancestrally duplicated region, and are known to be extremely common in polyploids. Detecting all kinds of genomic structural variation is challenging, but recent advances such as optical mapping and long-read sequencing offer potential strategies to help identify structural variants even in complex polyploid genomes. All three major types of genomic structural variation(presence–absence, copy-number, and homeologous exchange) are now known to influence phenotypes in crop plants, with examples of flowering time, frost tolerance, and adaptive and agronomic traits. In this review,we summarize the challenges of genome analysis in polyploid crops, describe the various types of genomic structural variation and the genomics technologies and data that can be used to detect them, and collate information produced to date related to the impact of genomic structural variation on crop phenotypes. We highlight the importance of genomic structural variation for the future genetic improvement of polyploid crops.Sarah-Veronica Schiessl Elvis Katche Elizabeth Ihien Harmeet Singh Chawla Annaliese S.Mason 2019The Crop Journal2019,7,2:2
6Capacity gaps in health facilities for case management of intestinal schistosomiasis and soil-transmitted helminthiasis in Burundi显示文摘Background:Schistosomiasis and soil-transmitted helminthiasis(STH)are endemic diseases in Burundi.STH control is integrated into health facilities(HF)across the country,but schistosomiasis control is not.The present study aimed to assess the capacity of HF for integrating intestinal schistosomiasis case management into their routine activities.In addition,the current capacity for HF-based STH case management was evaluated.Methods:A random cluster survey was carried out in July 2014,in 65 HF located in Schistosoma mansoni and STH endemic areas.Data were collected by semi-quantitative questionnaires.Staff with different functions at the HF were interviewed(managers,care providers,heads of laboratory and pharmacy and data clerks).Data pertaining to knowledge of intestinal schistosomiasis and STH symptoms,human and material resources and availability and costs of diagnostic tests and treatment were collected.Findings:Less than half of the 65 care providers mentioned one or more major symptoms of intestinal schistosomiasis(abdominal pain 43.1%,bloody diarrhoea 13.9%and bloody stool 7.7%).Few staff members(15.7%)received higher education,and less than 10%were trained in-job on intestinal schistosomiasis case management.Clinical guidelines and laboratory protocols for intestinal schistosomiasis diagnosis and treatment were available in one third of the HF.Diagnosis was performed by direct smear only.Praziquantel was not available in any of the HF.The results for STH were similar,except that major symptoms were more known and cited(abdominal pain 69.2%and diarrhoea 60%).Clinical guidelines were available in 61.5%of HF,and albendazole or mebendazole was available in all HF.Conclusions:The current capacity of HF for intestinal schistosomiasis and STH detection and management is inadequate.Treatment was not available for schistosomiasis.These issues need to be addressed to create an enabling environment for successful integration of intestinal schistosomiasis and STH case management into HF routine activities in Burundi for better control of these diseases.Paul Bizimana Katja Polman Jean-Pierre Van Geertruyden Frederic Nsabiyumva Celine Ngenzebuhoro Elvis Muhimpundu Giuseppina Ortu 2018Infectious Diseases of Poverty2018,7,1:2
7A phase Ⅲ study of single-agent vinorelbine as first-line treatment in elderly patients with advanced non-small cell lung cancer显示文摘Gridelli Elvis 2001Oncologist2001,,:1
8Effects of vinorelbine on quality of life and survival of elderly patients with advanced Non-small Cell Lung Cancer显示文摘Elderly Lung Cancer Vinorelbine Italian Study(ELVIS)Group 1999J Natl Cancer Inst1999,91,4:1
9Laparovaginal hysterectomy: A decade of evolution显示文摘Jennifer R.Cook Robert T.O’Shea Elvis I.Seman 2004Australian and New Zealand Journal of Obstetrics and Gynaecology2004,,2:1
10Receptor for AGEs (RAGE) as Mediator of NF-kB Pathway Activation in Neuroinflammation and Oxidative Stress显示文摘Julio C. Tobon-Velasco Elvis Cuevas Mónica A. Torres-Ramos 2014CNS & Neurological Disorders - Drug Targets2014,,:1
11Effects of vinorelbine on quality of life and survival elderly patients with advancednon-small cell lung cancer显示文摘The elderly lung cancer vinorelbine Italian study group(ELVIS) 1999J Natl Cancer Inst1999,91,1:1
12Effect of 11β-HSD1 dehydrogenase activity on bone histomorphometry of glucocorticoid-induced osteoporotic male Sprague-Dawley rats显示文摘Elvy Suhana MR Farihah HS Faizah O 0,,11:1
13Maximizing information exchange between complex networks显示文摘Bruce J. West Elvis L. Geneston Paolo Grigolini 2008Physics Reports2008,,1:1
14Rheumatoid arthritis specific anti-Sa antibodies target citrullinated vimentin显示文摘Erik RV Normand D Elvy L 2004Arthritis Res Ther2004,6,:1
15Test-Takers’Interaction with an L2 Video Listening Test显示文摘Wagner Elvis 2010System2010,38,2:1
16Valuation of Rice Postharvest Losses in Sub-Saharan Africa and Its Mitigation Strategies显示文摘Data on rice harvest and postharvest loss in Sub-Sahara Africa(SSA)is scanty making it difficult for stakeholders to appreciate the loss and set priority areas for loss reduction along the value chain.To address this problem,a protocol was developed and validated for postharvest loss(PHL)quantification in SSA.Quantitative losses at each segment were determined by field measurements.Interactive effect of origin of rice(domestic versus imported)and type of processing(white versus parboiled milled)on rice price in 33 markets in Africa was used to estimate qualitative loss for both white and parboiled milled rice.Total PHL for rice in SSA in 2018 is estimated at about US$10.24 billion,representing 47.63%of the expected total production.The highest loss recorded was quantitative loss before and during harvesting,followed by qualitative loss along the entire value chain,quantitative loss during milling,parboiling,threshing in that order,with the lowest being quantitative loss during drying.Priority areas to be targeted for PHL reduction in SSA and some loss mitigation tools and technologies piloted or suitable for SSA are proposed.Sali Atanga NDINDENG Alphonse CANDIA Delphine Lamare MAPIEMFU Vohangisoa RAKOTOMALALA Nahemiah DANBABA Kurahisha KULWA Paul HOUSSOU Sow MOHAMMED Ousman M.JARJU Salimata S.COULIBALY Elvis A.BAIDOO Jean MOREIRA Koichi FUTAKUCHI 2021Rice science2021,28,3:1
17International financial institution investments in tourism and hospitality显示文摘JOZE PERIC ELVIS MUJACEVIC MISLAV SIMUNIC 2011Journal of International Business and Cultural Studies2011,,1:1
18Evidence based application of BNP/NT-proB NP testing in heart failure显示文摘Don-Wauchope AC McK elvie RS 2015Clin Biochem2015,48,:1
19Ozone therapy: a clinical review 显示文摘Elvis AM Ekta JS 2011J Nat Sci Biol Med2011,2,1:1
20Effect of llI3-HSD1 dehydrogenase activity on bone histomor phometry of glucocorticoid-induced osteoporotic male Sprague-Dawley rats显示文摘Elvy Suhana MR Farihah HS Faizah O 2011Singapore Med J2011,52,11:1
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