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    题名 作者 年代 出处 被引量
1足尺磁流变阻尼器的建模及动态特性显示文摘在过去三十年左右的时间里,结构保护系统受到了广大研究者的普遍关注。这种保护系统可以用来降低自然灾害(如地震、强风)对土木工程建筑的损害。由于磁流变阻尼器机械结构简单,动态范围大,能耗低、回复力大,鲁棒性良好,能够在满足不同工程项目需求的同时提供有效的结构抗震抗风手段,目前它是一种非常有前途的半主动结构减震装置。本文首先介绍了磁流变液体和装置的主要特性和优点,建立了磁流变阻尼器的伪静力轴对称模型.并将其结果和平行板模型以及阻尼器实验结果进行了比较。尽管伪静力模型对于阻尼器的设计十分有效,但是它们还不足以描述阻尼器的动态特性。对实际工程应用来说,动态响应时间是一项非常重要的性能指标。文章还讨论了影响磁流变阻尼器动态响应时间的因素,建立了基于Bouc—Wen模型的阻尼器动态模型。同时文章也提出了优化阻尼器动态响应的途径和方法以及其实验验证。杨广强 B.F SpencerJr J.D.Carlson M.K. Sain 2001地震工程与工程振动2001,21,S1:32
2Nonlinear optics in all-dielectric nanoantennas and metasurfaces:a review显示文摘Free from phase-matching constraints,plasmonic metasurfaces have contributed significantly to the control of optical nonlinearity and enhancement of nonlinear generation efficiency by engineering subwavelength meta-atoms.However,high dissipative losses and inevitable thermal heating limit their applicability in nonlinear nanophotonics.All-dielectric metasurfaces,supporting both electric and magnetic Mie-type resonances in their nanostructures,have appeared as a promising alternative to nonlinear plasmonics.High-index dielectric nanostructures,allowing additional magnetic resonances,can induce magnetic nonlinear effects,which,along with electric nonlinearities,increase the nonlinear conversion efficiency.In addition,low dissipative losses and high damage thresholds provide an extra degree of freedom for operating at high pump intensities,resulting in a considerable enhancement of the nonlinear processes.We discuss the current state of the art in the intensely developing area of all-dielectric nonlinear nanostructures and metasurfaces,including the role of Mie modes,Fano resonances,and anapole moments for harmonic generation,wave mixing,and ultrafast optical switching.Furthermore,we review the recent progress in the nonlinear phase and wavefront control using all-dielectric metasurfaces.We discuss techniques to realize alldielectric metasurfaces for multifunctional applications and generation of second-order nonlinear processes from complementary metal–oxide–semiconductor-compatible materials.Basudeb Sain Cedrik Meier Thomas Zentgraf 2019Advanced Photonics2019,1,2:17
3Multichannel vectorial holographic display and encryption显示文摘Since its invention,holography has emerged as a powerful tool to fully reconstruct the wavefronts of light including all the fundamental properties(amplitude,phase,polarization,wave vector,and frequency).For exploring the full capability for information storage/display and enhancing the encryption security of metasurface holograms,smart multiplexing techniques together with suitable metasurface designs are highly demanded.Here,we integrate multiple polarization manipulation channels for various spatial phase profiles into a single birefringent vectorial hologram by completely avoiding unwanted cross-talk.Multiple independent target phase profiles with quantified phase relations that can process significantly different information in different polarization states are realized within a single metasurface.For our metasurface holograms,we demonstrate high fidelity,large efficiency,broadband operation,and a total of twelve polarization channels.Such multichannel polarization multiplexing can be used for dynamic vectorial holographic display and can provide triple protection for optical security.The concept is appealing for applications of arbitrary spin to angular momentum conversion and various phase modulation/beam shaping elements.Ruizhe Zhao Basudeb Sain Qunshuo Wei Chengchun Tang Xiaowei Li Thomas Weiss Lingling Huang Yongtian Wang Thomas Zentgraf 2018Light(Science & Applications)2018,7,1:15
4Effect of IOP based infusion system with and without balanced phaco tip on cumulative dissipated energy and estimated fluid usage in comparison to gravity fed infusion in torsional phacoemulsification显示文摘Background:To evaluate the effect of three different combinations of tip designs and infusion systems in torsional phacoemulsification(INFINITI and CENTURION)in patients with cataract.According to the manufacturer,two unique improvements in the Centurion are:active fluid dynamic management system and use of an intrepid balanced tip.The study specifically aimed to evaluate the beneficial effects,if any,of change in tip design and infusion system individually and in combination on both per-operative parameters as well as endothelial health over 6 months.Methods:One hundred and twenty six consenting patients of grade 4.0-6.9 senile cataract were randomized into three groups for phacoemulsification:Group A(n=42):Gravity fed infusion system and 45° Kelman miniflared ABS phaco tip;Group B(n=42):intraocular pressure(IOP)based infusion system and 45° Kelman miniflared ABS phaco tip;Group C(n=42):IOP based infusion system and 45° Intrepid balanced phaco tip.The cumulative dissipated energy(CDE),estimated fluid usage(EFU)and total aspiration time(TAT)were compared peroperatively.The endothelial parameters were followed up postoperatively for six months.Results:The three arms were matched for age(p=0.525),gender(p=0.96)and grade of cataract(p=0.177).Group C was associated with significant reductions in CDE(p=0.001),EFU(p<0.0005)as well as TAT(p=0.001)in comparison to the other groups.All three groups had comparable baseline endothelial cell density(p=0.876)and central corneal thickness(p=0.561).On post-operative evaluation,although all groups were comparable till 3 months,by 6 months,the percentage losses in endothelial cell density were significantly lower in group C as compared to the other groups.Conclusions:Use of an IOP based phacoemulsification system in association with use of the Intrepid balanced tip reduces the CDE,EFU and TAT in comparison to a gravity fed system with a mini flared tip or IOP based system with a mini flared tip while also providing better endothelial preservation thus favouring the use of an IOP fed system with a balanced tip.Praveen K.Malik Taru Dewan Arun Kr Patidar Ekta Sain 2017Eye and Vision2017,4,1:11
5INK-JET PRINT QUALITY IMPROVEMENT THROUGH THE USE OF CATIONIC SMA RESIN ADDITIVE IN PAPER COATING显示文摘Ink-jet printing technology is a prominent feature of any home office as it is more economical when compared with other printing technologies. The base paper for this study was a commercial fine paper, coated on one side with a typical formula of 100 pph pigment: 30 pph binder: ≤ 1 pph additive at 25% solids content. The focus of this paper was to evaluate a cationic resin additive in the coating formulation and its effect on print image sharpness. The print image sharpness was assessed based on the measured parameters of mean grey scale, area and perimeter of the image. Compared with a typical coating additive (i.e. Poly-dadmac), the coatings with SMA resin additives showed good grey scale ink density on the sheet. Compared to uncoated samples, the ink deposited on the SMA containing coated sheets was not absorbed into the paper, allowing for better print areas to be produced. The results of this study demonstrated the potential of further developing this cationic resin as a paper coating additive.M. Sain F. Correia R. Farnood Bill Dougherty 2004天津科技大学学报2004,19,A01:11
6Metasurface interferometry toward quantum sensors显示文摘Optical metasurfaces open new avenues for the precise wavefront control of light for integrated quantum technology.Here,we demonstrate a hybrid integrated quantum photonic system that is capable of entangling and disentangling two-photon spin states at a dielectric metasurface.Via the interference of single-photon pairs at a nanostructured dielectric metasurface,a path-entangled two-photon NOON state with circular polarization that exhibits a quantum HOM interference visibility of 86±4% is generated.Furthermore,we demonstrate nonclassicality andphase sensitivity in a metasurface-based interferometer with a fringe visibility of 86.8±1.1%in the coincidence counts.This high visibility proves the metasurface-induced path entanglement inside the interferometer.Our findings provide a promising way to develop hybrid-integrated quantum technology operating in the high-dimensional mode space in various applications,such as imaging,sensing,and computing.Philip Georgi Marcello Massaro Kai-Hong Luo Basudeb Sain Nicola Montaut Harald Herrmann Thomas Weiss Guixin Li Christine Silberhorn Thomas Zentgraf 2019Light(Science & Applications)2019,8,1:7
7铜及其配合物在生物体系中的作用显示文摘自人类有历史记载以来,铜及其配合物即用作药物。铜是人体必需的金属元素。人体的正常代谢过程需要它们,但无法体内合成,因此,需要每天从饮食摄取和吸收。生物药学家和研究者以极大的努力彻底地了解铜及其配合物在生物体系中的作用,希望获得更多地信息以利于人类疾病的预防和治疗。本综述评述了铜在组织中的分配和代谢、铜依赖酶、在病态时铜的非正常代谢、铜配合物的药疗活性和抑制氧自由基的产生。Khan* M. Farid Ismail, Norhayati Yusof, Ahmad Pauzi M. Khan*, Gul Majid(School of Pharmaceutical Sciences, University Sains Malaysia, 11800 Pulau Pinang, Malaysia) 1998无机化学学报1998,14,1:7
8基于叠前地震数据和岩石物理的游离气定量估算方法——以印度Krishna-Godavari盆地NGHP01-10A井为例显示文摘天然气水合物稳定带下方游离气分布模式、气体含量及其对水合物富集成藏的指示是水合物研究中的难点,而利用振幅随偏移距变化(Amplitude Versus Offset,AVO)与岩石物理模型能够对游离气含量进行地震定量解释.我们对印度Krishna-Godavari(K-G)盆地的地震资料进行了叠前保幅处理,在测井数据和层位标定的基础上,基于等效介质岩石物理模型和AVO正演模拟定量估算了NGHP01-10A井的游离气饱和度,发现水合物下方的游离气饱和度与其分布模式有关.游离气呈均匀分布时饱和度为孔隙空间的0.3%~0.4%,而块状分布时为3%~4%,该结果与NGHP01-10D实测计算的泊松比交汇分析结果吻合很好.最后再根据干燥岩石骨架的泊松比反演结果进一步判断游离气分布为均匀分布,其饱和度为0.3%~0.4%.钱进 王秀娟 董冬冬 吴时国 Sain Kalachand 叶月明 2016地球物理学报2016,59,7:6
9All-dielectric silicon metalens for two-dimensional particle manipulation in optical tweezers显示文摘Dynamic control of compact chip-scale contactless manipulation of particles for bioscience applications remains a challenging endeavor,which is restrained by the balance between trapping efficiency and scalable apparatus.Metasurfaces offer the implementation of feasible optical tweezers on a planar platform for shaping the exerted optical force by a microscale-integrated device.Here we design and experimentally demonstrate a highly efficient silicon-based metalens for two-dimensional optical trapping in the near-infrared.Our metalens concept is based on the Pancharatnam–Berry phase,which enables the device for polarization-sensitive particle manipulation.Our optical trapping setup is capable of adjusting the position of both the metasurface lens and the particle chamber freely in three directions,which offers great freedom for optical trap adjustment and alignment.Two-dimensional(2D)particle manipulation is done with a relatively low-numerical-aperture metalens(NA(ML)=0.6).We experimentally demonstrate both 2D polarization-sensitive drag and drop manipulation of polystyrene particles suspended in water and transfer of angular orbital momentum to these particles with a single tailored beam.Our work may open new possibilities for lab-on-a-chip optical trapping for bioscience applications and microscale to nanoscale optical tweezers.TEANCHAI CHANTAKIT CHRISTIAN SCHLICKRIEDE BASUDEB SAIN FABIAN MEYER THOMAS WEISS NATTAPORN CHATTHAM AND THOMAS ZENTGRAF 2020Photonics Research2020,8,9:6
10石墨化生物质炭复合材料制备研究显示文摘在高温氮气流中制备竹基和木基生物质炭,并将其掺入聚丙烯(PP)中制备生物质炭-聚丙烯复合材料,探究生物质炭对复合材料力学性能的影响。通过拉曼光谱(Raman)、X射线衍射(XRD)和衰减全反射(ATR)红外光谱及复合材料中的空隙因子归一化分析表明:竹基生物质炭和木基生物质炭具有明显的石墨特性;与纯聚丙烯相比,竹基生物质炭-聚丙烯复合材料有效拉伸强度降低了约10%;木基生物质-聚丙烯复合材料拉伸强度为32.3 MPa,冲击强度为17.4 J/m,与纯聚丙烯相比,木基生物质炭-聚丙烯复合材料的拉伸模量、抗弯强度和抗弯模量分别增加56%、19%和67%;木基生物质炭掺入热塑性聚丙烯中可增强复合材料的力学性能。赖润燊 周吓星 陈礼辉 SAIN Mohini 黄方 2022林产工业2022,59,6:5
11Cellulose-based Antimicrobial Composites and Applications: A Brief Review显示文摘Cellulose-based antimicrobial composites,typically in the form of functional films and cloth,have received much attention in various applications,such as food,medical and textile industries.Cellulose is a natural polymer,and is highly biodegradable,green,and sustainable.Imparting antimicrobial properties to cellulose,will significantly enhance its applications so that its commercial value can be boosted.In this review paper,the use of cellulose for antimicrobial composites’preparation was discussed.Two different approaches:surface loading/coating and interior embedding,were focused.Three most widely-applied sectors:food,medical and textile industries,were highlighted.Nanocellulose,as a leading-edge cellulose material,its unique application on the antimicrobial composites,was particularly discussed.Bo Sun Fangong Kong Min Zhang Weijun Wang Birat Singh KC Jimi Tjong Mohini Sain 2019Paper And Biomaterials2019,4,4:5
12Robotic total meso-rectal excision for rectal cancer: A systematic review following the publication of the ROLARR trial显示文摘AIM To compare outcomes in patients undergoing rectal resection by robotic total meso-rectal excision(RTME) vs laparoscopic total meso-rectal excision(LTME).METHODS Standard medical electronic databases such as Pub-Med, MEDLINE, EMBASE and Scopus were searched to find relevant articles. The data retrieved from all types of included published comparative trials in pati-ents undergoing RTME vs LTME was analysed using the principles of meta-analysis. The operative, post-operative and oncological outcomes were evaluated to assess the effectiveness of both techniques of TME. The summated outcome of continuous variables was expressed as standardized mean difference(SMD) and dichotomous data was presented in odds ratio(OR).RESULTS One RCT(ROLARR trial) and 27 other comparative studies reporting the non-oncological and oncological outcomes following RTME vs LTME were included in this review. In the random effects model analysis using the statistical software Review Manager 5.3, the RTME was associated with longer operation time(SMD, 0.46; 95%CI: 0.25, 0.67; z = 4.33; P = 0.0001), early passage of first flatus(P = 0.002), lower risk of conversion(P = 0.00001) and shorter hospitalization(P = 0.01). The statistical equivalence was seen between RTME and LTME for non-oncological variables like blo-od loss, morbidity, mortality and re-operation risk. The oncological variables such as recurrence(P = 0.96), number of harvested nodes(P = 0.49) and positive circumferential resection margin risk(P = 0.53) were also comparable in both groups. The length of distal resection margins was similar in both groups. CONCLUSION RTME is feasible and oncologically safe but failed to demonstrate any superiority over LTME for many sur-gical outcomes except early passage of flatus, lower risk of conversion and shorter hospitalization.Katie Jones Mohamed G Qassem Parv Sains Mirza K Baig Muhammad S Sajid 2018World Journal of Gastrointestinal Oncology2018,10,11:4
13Isolation and characterization of nanofibers from agricultural residues – Wheat straw and soy hulls显示文摘Ayse Alemdar Mohini Sain 2007Bioresource Technology2007,,6:3
14Phenomenological Model for Magnetorheological Dampers显示文摘B. F. Spencer Jr. S. J. Dyke M. K. Sain J. D. Carlson 1997Journal of Engineering Mechanics1997,,3:3
15Modeling and control of magnetorheological dampers forseismic response reduction 显示文摘DYKE S J SPENCER B F SAIN M K CARLSON J D 1996Smart Materials and Structures1996,5,5:2
16多次覆盖的深地震反射剖面炮集产生的单边折射数据的模拟与反演:推导浅层速度结构的方法显示文摘地壳尺度多次覆盖的近垂直深地震反射剖面产生大量的单边炮集,因浅层折射波的交互覆盖而产生众多的数据集。我们介绍一种推导浅层速度结构的方法,该方法是通过模拟和反演单边地震折射初至走时数据来实现的。我们将该方法应用于在印度地盾西北新元古代马尔瓦尔盆地进行的炮检距为100m、长12km的剖面上获得的数据集。该方法表明,在描述浅层折射层深度、陡的倾角和速度方面是成功的,即使缺少常规的相遇折射剖面也如此。研究揭示出马尔瓦尔盆地的2层沉积建造、默拉尼火山岩和复杂基底地形,并测量出了所估算模型参数的分辨率和不确定性。发现近道选排的地震截面图在性质上与导出的盆地结构特征相一致。在布格重力剖面上观测到的相对高和低的异常进一步证实了导出的这一速度模型。本文提出的方法对那些只能获得单边、多次覆盖的地震剖面数据集的近海等地区是非常有用的。V. V. Rao K. Sain V. G. Krishna 刘越(译) 谢汝一(译) 梁慧云(校) 2007世界地震译丛2007,38,5:2
17Biocomposites reinforced with natural fibers: 2000–2010显示文摘Omar Faruk Andrzej K. Bledzki Hans-Peter Fink Mohini Sain 2012Progress in Polymer Science2012,,11:2
18Probabilistic stability measures for controlled structures subject to the real parameter uneertainties显示文摘SPENCER JR B F SAIN M K KANOR J C 1992Smart Materials and Structures1992,1,2:1
19Synthesis, characterization and catalytic activity of cobalt phthalocyanine tetrasulphonamide in sweetening of LPG 显示文摘Gautam Das Bit Sain Sunil Kumar 2009Catalysis Today2009,141,:1
20Preparation and characterization of wheat straw fibers for reinforcing application in injection molded thermoplastic composites显示文摘PANT H S ZERKSHKIAN A SAIN M 2006Bioresource Technology2006,97,26:1
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