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1535篇 您的检索式:作者名="Silva T"
    题名 作者 年代 出处 被引量
1未固结流砂地层采油过程中出砂情况模拟实验显示文摘为了研究未固结流砂储集层在采油过程中的出砂情况和影响出砂的主要因素,进行了不同条件下的出砂过程模拟实验。使用水洗白砂、黏土(高岭土)和蒸馏水制成未固结流砂地层模型,利用新开发的出砂模拟装置进行了模拟实验,并分析了作用于地层的拖曳力和地层胶结特征对出砂的影响。研究表明,随着拖曳力的增加,出砂速度和产油速度都加快;随着胶结物含量的增加,出砂量和产油量明显降低,甚至在胶结物含量较高的情况下出砂量几乎为零。地层压力大的油藏在开采期间由于产生了较大的拖曳力更可能出砂,而拖曳力和有效地层应力共同影响油藏的总体产油量。可以根据地层黏土含量估计出砂情况,从而通过采取适当的防砂措施尽可能减少出砂量。某些情况下油藏比气藏更容易出砂。PERERA M S A RANJITH P G RATHNAWEERA T D DE SILVA G P D LIU T 2017石油勘探与开发2017,44,5:8
2β-defensins and the epididymis: contrasting influences of prenatal, postnatal, and adult scenarios显示文摘β -defensins 是主人防卫的部件,与抗菌剂和多种的免疫调节的性质。在最后 15 年的研究表明了许多 β 的丰富的表示;在不同种类的出生后的 epididymis 的 -defensins。这些蛋白质的区域特定、房间特定的表示的一个坡度在出生后的 epididymis 的上皮被观察。他们进到他们沿着 epididymis 旅行的精子的钠液体和绑定的分泌物在繁殖特定的任务建议了他们的参与。因此,连续注意被给了各种各样的 β为他们在精子功能和富饶的角色的 -defensins。尽管 β -defensins 大部分依赖于雄激素,在 epididymis 调整他们的表达式和函数的内在的机制很好没被理解。最近的调查指出了到在哪儿的一种新、有趣的情形 β ; -defensins 在 Wolffian 管与一个不同表示模式出现, epididymis 的胚胎的先锋与成年 epididymis 对比,从而有关 β 的多功能的角色重新定义这个概念;在发展中的 epididymis 的 -defensins 。在这评论,我们总结 β 的一些当前的看法;在在 prenatal-to-postnatal 转变期间在发展中的 epididymis 在他们的角色上加亮我们的最近的数据和推测的 epididymis 的 -defensins ,在可以贡献 epididymal 生物学和男富饶的更好的理解的这个研究区域把注意带到许多未答复的问题。Camilla M Ribeiro Erick JR Silva Barry T Hinton Maria Christina W Avellar 2016Asian Journal of Andrology2016,18,2:4
3Proton nuclear magnetic resonance-based metabonomic models for non-invasive diagnosis of liver fibrosis in chronic hepatitis C:Optimizing the classification of intermediate fibrosis显示文摘AIM To develop metabonomic models(MMs), using 1 H nuclear magnetic resonance(NMR) spectra of serum, to predict significant liver fibrosis(SF: Metavir ≥ F2), advanced liver fibrosis(AF: METAVIR ≥ F3) and cirrhosis(C: METAVIR = F4 or clinical cirrhosis) in chronic hepatitis C(CHC) patients. Additionally, to compare the accuracy of the MMs with the aspartate aminotransferase to platelet ratio index(APRI) and fibrosis index based on four factors(FIB-4). METHODS Sixty-nine patients who had undergone biopsy in the previous 12 mo or had clinical cirrhosis were included. The presence of any other liver disease was a criterion for exclusion. The MMs, constructed using partial least squares discriminant analysis and linear discriminant analysis formalisms, were tested by cross-validation, considering SF, AF and C. RESULTS Results showed that forty-two patients(61%) presented SF, 28(40%) AF and 18(26%) C. The MMs showed sensitivity and specificity of 97.6% and 92.6% to predict SF; 96.4% and 95.1% to predict AF; and 100% and 98.0% to predict C. Besides that, the MMs correctly classified all 27(39.7%) and 25(38.8%) patients with intermediate values of APRI and FIB-4, respectively. CONCLUSION The metabonomic strategy performed excellently in predicting significant and advanced liver fibrosis in CHC patients, including those in the gray zone of APRI and FIB-4, which may contribute to reducing the need for these patients to undergo liver biopsy.Andrea Dória Batista Carlos Jonnatan Pimentel Barros Tássia Brena Barroso Carneiro Costa Michele Maria Goncalves de Godoy Ronaldo Dionísio Silva Joelma Carvalho Santos Mariana Montenegro de Melo Lira Norma ThoméJucá Edmundo Pessoa de Almeida Lopes Ricardo Oliveira Silva 2018World Journal of Hepatology2018,10,1:2
4Acute pancreatitis complicated with splenic rupture: A case report显示文摘Atraumatic splenic rupture is an uncommon complication of acute pancreatitis. This report describes the case of a 30-year-old man with acute pancreatitis and splenic vein thrombosis complicated by splenic rupture. The patient was admitted to the emergency department with pain in the upper abdomen that had been present for six hours and was associated with vomiting and sweating. He was diagnosed with acute pancreatitis of alcoholic etiology. Upon computed tomography(CT) of the abdomen, the pancreatitis was scored as Balthazar C grade, and a suspicious area of necrosis affecting 30% of the pancreas with splenic vein thrombosis was revealed. Seventytwo hours after admission, the patient had significant improvement in symptoms. However, he showed clinical worsening on the sixth day of hospitalization, with increasing abdominal distension and reduced hemoglobin levels. A CT angiography showed a large amount of free fluid in the abdominal cavity, along with a large splenic hematoma and contrast extravasation along the spleen artery. The patient subsequently underwent laparotomy, which showed hemoperitoneum due to rupture of the splenic parenchyma. A splenectomy was then performed, followed by ultrasound-guided percutaneous drainage.Bruno L Hernani Pedro C Silva Ricardo T Nishio Henrique C Mateus José C Assef Tercio De Campos 2015World Journal of Gastrointestinal Surgery2015,7,9:2
5Emergency medical services use and its association with acute ischaemic stroke evaluation and treatment in Singapore显示文摘Background Emergency medical services(EMS)is a critical link in the chain of stroke survival.We aimed to assess EMS use for stroke in Singapore,identify characteristics associated with EMS use and the association of EMS use with stroke evaluation and treatment.Methods The Singapore Stroke Registry combines nationwide EMS and public hospital data for stroke cases in Singapore.Multivariate regressions with the generalised estimating equations were performed to examine the association between EMS use and timely stroke evaluation and treatment.results Of 3555 acute ischaemic patients with symptom onset within 24 hours admitted to all five public hospitals between 2015 and 2016,68%arrived via EMS.Patients who used EMS were older,were less likely to be female,had higher stroke severity by National Institute of Health Stroke Scale and had a higher prevalence of atrial fibrillation or peripheral arterial disease.Patients transported by EMS were more likely to receive rapid evaluation(door-to imaging time≤25 min 34.3%vs 11.1%,OR=2.74(95%CI 1.40 to 5.38))and were more likely to receive intravenous tissue plasminogen activator(tPA,22.8%vs 4.6%,OR=4.61(95%CI 3.52 to 6.03)).Among patients treated with tPA,patients who arrived via EMS were more likely to receive timely treatment than self-transported patients(door-to needle time≤60 min 52.6%vs 29.4%,OR=2.58(95%CI 1.35 to 4.92)).Conclusions EMS use is associated with timely stroke evaluation and treatment in Singapore.Seamless EMS-Hospital stroke pathways and targeted public campaigns to advocate for appropriate EMS use have the potential to improve acute stroke care.Hanzhang Xu Ying Xian Fung Peng Woon Janet Prvu Bettger Daniel T Laskowitz Yih Yng Ng Marcus Eng Hock Ong David Bruce Matchar Deidre Anne De Silva 2020Stroke & Vascular Neurology2020,5,2:2
6Potassium permanganate oxidation of phenanthrene and pyrene in contaminated soils显示文摘Silva P T de souza e Silva V L Neto B B 2009Journal of Hazardous Materials2009,168,:1
7293 cell cycle synchronisation adenovirus vector production显示文摘Ferreira T B Perdigao R Silva A C 2009Biotechnol Prog2009,25,1:1
8Third-generation nephrectomy by natural orifice transluminal endoscopic surgery显示文摘Lima E Rolanda C Pego J M Henriques-Coelho T Silva D Osorio L 2007J Urol2007,178,:1
9Influence of excitation wavelength (UV or visible light) on the photoeatalytic activity of titania containing gold nanoparticles for the generation of hydrogen or oxygen from water显示文摘Silva C G Marino T Molinari R 2011Journal of the American Chemistry Society2011,133,3:1
10Reducing the radiation dose ~or CT colonography using adaptive statistical iterative re- construction~ a pilot study 显示文摘Flicek K T Hara A K Silva A C 2010AJR2010,195,1:1
11The essential oil of Eucalyptus tereticornis and its constituents, α-and β-pinene, show accelerative properties on rat gastrointestinal transit 显示文摘Juca D M Da Silva M T Junior RC Jr 2011Planta Med2011,77,1:1
12Novel scorpionate and pyrazole dioxovanadium complexes,catalysts for carboxylation and peroxidative oxidation of alkanes显示文摘Silva T F S Luzyanin K V Kirillova M V 2010Adv Synth Catal2010,352,:1
13Different ni- trogen sources affect biomass partitioning and quality of potato production in a hydroponic system 显示文摘Silva J G Franqa M G C Gomide F T F 2013American Journal of Potato Research2013,90,2:1
14Discrimination of agricultural crops in a tropical semi-arid region of Brazil based on L-band polarimetric airborne SAR data显示文摘Silva W F Rudorff B F T Formaggio A R 2009ISPRS Journal of Photogrammetry and Remote Sensing2009,64,5:1
15Chemical composition and free radical scavenging activity of pollen loadsfrom stingless bee Melipona subnitida D\icke显示文摘Silva T M S Camara C A da Silva Lins A C 2006Journal of Food Composition and Analysis2006,19,6:1
16One-week dual therapy with ranitidine bismuth citrate and clarithromycin for the treatment of Helicobacter pylori infection in Brazilian patients with peptic ulcer显示文摘AIM: To assess the efficacy and safety of ranitidine bismuth citrate plus clarithromycin given for 1 wk in Brazilian patients with peptic ulcer.METHODS: One hundred and twenty patients with peptic ulcer were randomized in two treatment groups: (1) 1-wk regimen consisting of ranitidine bismuth citrate 400 mg b.i.d. with clarithromycin 500 mg b.i.d. or (2) 2-wk regimen of the same treatment. Eradication of the infection was considered when both the histologic examination and the urease test were negative for the infection 3 mo after treatment.RESULTS: By intention to treat analysis, Helicobacter pylori (H pylori) was eradicated in 73% and 76% of patients, respectively treated for 1 or 2 wk (P>0.05). By per protocol analysis, the eradication rates were 80% and 83%,respectively, in patients treated for 1 or 2 wk (P>0.05). Nine patients (8.2%) reported minor side effects. CONCLUSION: One-week therapy with ranitidine bismuth citrate and clarithromycin is safe, well tolerated and effective for treatment of H pylori infection, andappears to be comparable to the 2-wk regimen in terms of efficacy.Maria Aparecida Mesquita S(o|^)nia Letícia Silva Lorena Jazon Romilson Souza Almeida Ciro Garcia Montes Fábio Guerrazzi Luciana T Campos José Murilo Rubiota Zeitune 2005World Journal of Gastroenterology2005,11,23:1
17Late paleocene to eocene paleocenography of the equatorial pacific ocean: stable isotopes recorded at ocean drilling program site 865, allison guyot显示文摘 Zachos J C Thomas E Parrow M Paul C K Kelly D C Silva I P Sliter W V Lohmann K C 1995Paleoceanography1995,10,:1
18Low -vs high -dose almitrine combined with nitric oxide to prevent hypoxia during open - chest one - lung ventilation 显示文摘Silva T Gallart L Valles J 2005Br J Anaesth2005,95,3:1
19Review of composting and anaerobic digestion of municipal solid waste and a methodological proposal for a mid-size city 显示文摘Silva M R Q Naik T R 2007Sustainable Construction Materials and Technologies2007,,:1
20Risk factors involved in symmetrical distal diabetic neuropathy显示文摘Viera G N Labastida S Z Silva T H 2001Rev Neurol2001,32,9:1
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