维普中文期刊产品整合服务
2059篇 您的检索式:作者名="Choi N"
    题名 作者 年代 出处 被引量
1Enhanced second-harmonic generation from two-dimensional MoSe_(2) on a silicon waveguide显示文摘Two-dimensional transition-metal dichalcogenides(TMDCs)with intrinsically broken crystal inversion symmetry and large secondorder nonlinear responses have shown great promise for future nonlinear light sources.However,the sub-nanometer monolayer thickness of such materials limits the length of their nonlinear interaction with light.Here,we experimentally demonstrate the enhancement of the second-harmonic generation from monolayer MoSe_(2) by its integration onto a 220-nm-thick silicon waveguide.Such on-chip integration allows for a marked increase in the interaction length between the MoSe_(2) and the waveguide mode,further enabling phase matching of the nonlinear process.The demonstrated TMDC–silicon photonic hybrid integration opens the door to second-order nonlinear effects within the silicon photonic platform,including efficient frequency conversion,parametric amplification and the generation of entangled photon pairs.Haitao Chen Vincent Corboliou Alexander S Solntsev Duk-Yong Choi Maria A Vincenti Domenico de Ceglia Costantino de Angelis Yuerui Lu Dragomir N Neshev 2017Light(Science & Applications)2017,6,1:7
2Immunohistochemical expression of intrarenal renin angiotensin system components in response to tempol in rats fed a high salt diet显示文摘AIM To determine the effect of tempol in normal rats fed high salt on arterial pressure and the balance between antagonist components of the renal renin-angiotensin system.METHODS Sprague-Dawley rats were fed with 8% Na Cl highsalt(HS) or 0.4% Na Cl(normal-salt,NS) diet for 3 wk,with or without tempol(T)(1 mmol/L,administered in drinking water). Mean arterial pressure(MAP),glomerularfiltration rate(GFR),and urinary sodium excretion(UVNa) were measured. We evaluated angiotensin Ⅱ(Ang Ⅱ),angiotensin 1-7(Ang 1-7),angiotensin converting enzyme 2(ACE2),mas receptor(Mas R),angiotensin type 1 receptor(AT1R) and angiotensin type 2 receptor(AT2R) in renal tissues by immunohistochemistry.RESULTS The intake of high sodium produced a slight but significant increase in MAP and differentially regulated components of the renal renin-angiotensin system(RAS). This included an increase in Ang Ⅱ and AT1 R,and decrease in ACE-2 staining intensity using immunohistochemistry. Antioxidant supplementation with tempol increased natriuresis and GFR,prevented changes in blood pressure and reversed the imbalance of renal RAS components. This includes a decrease in Ang Ⅱ and AT1 R,as increase in AT2,ACE2,Ang(1-7) and Mas R staining intensity using immunohistochemistry. In addition,the natriuretic effects of tempol were observed in NS-T group,which showed an increased staining intensity of AT2,ACE2,Ang(1-7) and Mas R.CONCLUSION These findings suggest that a high salt diet leads to changes in the homeostasis and balance between opposing components of the renal RAS in hypertension to favour an increase in Ang Ⅱ. Chronic antioxidant supplementation can modulate the balance between the natriuretic and antinatriuretic components of the renal RAS.Gabriel Cao Silvana Lorena Della Penna Nicolas Martín Kouyoumdzian Marcelo Roberto Choi Susana Gorzalczany Belisario Enrique Fernández Jorge Eduardo Toblli María Inés Roson 2017World Journal of Nephrology2017,6,1:4
3Preddctive factors in radiotheraphy for non-mall cell lung cancer:presentstatus 显示文摘Choi N Baumann M Flentjie M 2001Lung Cancer2001,3,1:2
4Renal dopaminergic system:Pathophysiological implications and clinical perspectives显示文摘Fluid homeostasis, blood pressure and redox balance in the kidney are regulated by an intricate interaction between local and systemic anti-natriuretic and natriuretic systems. Intrarenal dopamine plays a central role on this interactive network. By activating specific receptors, dopamine promotes sodium excretion and stimulates anti-oxidant and anti-inflammatory pathways. Different pathological scenarios where renal sodium excretion is dysregulated, as in nephrotic syndrome, hypertension and renal inflammation, can be associated with impaired action of renal dopamine including alteration in biosynthesis, dopamine receptor expression and signal transduction. Given its properties on the regulation of renal blood flow and sodium excretion, exogenous dopamine has been postulated as a potential therapeutic strategy to prevent renal failure in critically ill patients. The aim of this review is to update and discuss on the most recent findings about renal dopaminergic system and its role in several diseases involving the kidneys and the potential use of dopamine as a nephroprotective agent.Marcelo Roberto Choi Nicolás Martín Kouyoumdzian Natalia Lucía Rukavina Mikusic María Cecilia Kravetz María Inés Rosón Martín Rodríguez Fermepin Belisario Enrique Fernández 2015World Journal of Nephrology2015,4,2:2
5Input feature selection for classification problems显示文摘KWAK N CHOI C H 2002IEEE Transactions on Neural Networks2002,3,1:1
6Antifungal activity of the methanol extract of Myristica malabarica fruit rinds and the active ingredients malabaricones against phytopathogenic fungi 显示文摘Choi H N Choi J G Jang S K 2008Plant Pathol2008,24,3:1
7Risk factors for acquisition of imipenem-resistant Acinetobacter baumannii: a case-control study显示文摘Lee SO Kim N J Choi SH 2004Antimicrob Agents Chemother2004,48,1:1
8Protective effects of extract with phenolics from Camellia (Camellia japonica) leaf against oxidative stress- induced neurotoxicity显示文摘JEONG C H KIM J H CHOI G N 2010Food Sci Biotechnol2010,19,5:1
9Serum response factor enhances liver metastasis of colorectal carcinoma via alteration of the E cadherin/beta catenin complex 显示文摘Choi H N Kim K R Lee J H 2009Oncol Rep2009,21,1:1
10Purification and characteriza-tion of iron superoxide dismutase and copper-zine superoxide dismutase from Acanthamoeba castellanii显示文摘Choi D H N a B K Seo M S 2000J Parasitol2000,86,5:1
11Spinal involvement of hematopoietic malignancies and metastasis: differentiation using MR imaging显示文摘Kim H J Ryu K N Choi W S 1999Clin Imaging1999,23,2:1
12Heparanase: a new metastasis-associated antigen recognized in breast cancer patients by spontaneously induced memory T lymphocytes显示文摘Sommerfeldt N Beckhove P Ge Y Sehutz F Choi C Bucur M Domsehke C Sohn C Sehneeweis A Rom J Poll- mann D Leneht D Vlodavsky I Sehirrmaeher V 2006Cancer Res2006,66,15:1
13The novel acute phase protein, IHRP, inhibits actin polymerization and phagocytosis of polymorphonuclear cells显示文摘Choi - Miura N H Takahashi K Yoda M 2000Inflamm Res2000,49,:1
14Protective effects of hyperoside against carbon tetrachloride-induced liver damage in mice 显示文摘CHOI J H KIM D W YUN N 2011J Nat Prod2011,74,5:1
15Face recognition based on 2D images under illumination and pose variations显示文摘Choi S Choi C H Kwak N 2011Pat- tern Recognition Letters2011,32,4:1
16Tumor necrosis factor α-induced interleukin-32 is positively regulated via the Syk/protein kinase Cδ/JNK pathway in rheumatoid synovial fibroblasts显示文摘Mun S H Kim J W Nah S S Ko N Y Lee J H Kim J D Kim do K Kim H S Choi J D Kim S H Lee C K Park S H Kim B K Kim H S Kim Y M and Choi W S 0,,03:1
17Numerical investigation on the flow, combustion and NOx emission characteristics in a 500 MW tangentially fired pulverized-coal boiler显示文摘Choi C R Kim C N 2009Fuel2009,88,9:1
18Environmental energy efficiency of China's regional economics: A non-oriented slacks-based measure analysis显示文摘Zhang N Choi Y 2013The Social Science Journal2013,,50:1
19Magnetorheological isolators using muhiple fluid modes 显示文摘Brigley M Choi Y T Wereley N M 2007Journal of Intelligent Material Systems and Structures2007,18,12:1
20Challenges facing li thium baueries and electrical double-layer capacitors 显示文摘Choi N S Chen Z H Freunberger S A et ai 2012Angew Chem Int Ed2012,51,40:1
返回顶部 每页显示:
共103页 首页 上一页 第1页 下一页 末页 /103 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费