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| 1 | Plasmonic enhancement of upconversion emission in Ag@NaYF4:Er^3+/Yb^3+phosphor显示文摘In this article upconversion luminescence of silver nanoparticles(AgNPs) coated NaYF_4:Er^(3+)/Yb^(3+)phosphor nano-particles was investigated.The prepared samples were characterized through various techniques.The surface plasmon band is observed for prepared AgNPs by analyzing UV-vis measurements and is used to enhance the upconversion emission.From the upconversion measurement the emission bands are observed at 522,546,and 656 nm corresponding to the ~2 H_(11/2)→ 4~1_(15/2),~4 S_(3/2)→~4 I_(15/2)and ~4 F_(9/2)→~4 I_(15/2) levels,respectively.The upconversion emission intensity of the above bands is found to enhance for sample containing 1 mmol AgNPs.Decay time of ~4 S_(3/2) and 4~F_(9/2) levels is found to decrease on coating of AgNPs and hence intensity enhancement is assumed due to the surface plasmon resonance(SPR) effect. | S.K.Maurya S.R Tiwari A.Kumar K.Kumar | 2018 | Journal of Rare Earths2018，36，9： | 3 |
| 2 | 添加石墨/Al_2O_3和SiC颗粒对搅拌摩擦加工技术制备6061-T6铝基复合材料磨损性能的影响(英文)显示文摘采用搅拌摩擦加工技术,将平均粒径为20μm的(SiC+石墨)或(SiC+Al2O3)混合粉末掺入到6061-T6铝合金板中,制备铝基表面混杂复合材料。组织观察结果表明,SiC、石墨和Al2O3颗粒均匀分散于铝基表面复合材料的焊合区中。与添加Al2O3和SiC相比,添加石墨和SiC颗粒虽然使表面复合材料的显微硬度有所降低,但却使其磨损性能得到显著提升。对复合材料的显微组织和磨损表面进行了分析。 | A.DEVARAJU A.KUMAR B.KOTIVEERACHARI | 2013 | Transactions of Nonferrous Metals Society of China2013，23，5： | 3 |
| 3 | High Order Stable Infinite Impulse Response Filter Design Using Cuckoo Search Algorithm显示文摘In this paper,an efficient technique for optimal design of digital infinite impulse response(IIR) filter with minimum passband error(ep),minimum stopband error(es),high stopband attenuation(As),and also free from limit cycle effect is proposed using cuckoo search(CS) algorithm.In the proposed method,error function,which is multi-model and non-differentiable in the heuristic surface,is constructed as the mean squared difference between the designed and desired response in frequency domain,and is optimized using CS algorithm.Computational efficiency of the proposed technique for exploration in search space is examined,and during exploration,stability of filter is maintained by considering lattice representation of the denominator polynomials,which requires less computational complexity as well as it improves the exploration ability in search space for designing higher filter taps.A comparative study of the proposed method with other algorithms is made,and the obtained results show that 90% reduction in errors is achieved using the proposed method.However,computational complexity in term of CPU time is increased as compared to other existing algorithms. | N.Agrawal A.Kumar V.Bajaj G.K.Singh | 2017 | International Journal of Automation and computing2017，14，5： | 2 |
| 4 | Development of peptide inhibitors of HIV transmission显示文摘Treatment of HIV has long faced the challenge of high mutation rates leading to rapid development of resistance,with ongoing need to develop new methods to effectively fight the infection.Traditionally,early HIV medications were designed to inhibit RNA replication and protein production through small molecular drugs.Peptide based therapeutics are a versatile,promising field in HIV therapy,which continues to develop as we expand our understanding of key protein-protein interactions that occur in HIV replication and infection.This review begins with an introduction to HIV,followed by the biological basis of disease,current clinical management of the disease,therapeutics on the market,and finally potential avenues for improved drug development. | Siyu Shi Peter K.Nguyen Henry J.Cabral Ramon Diez-Barroso Paul J.Derry Satoko M.Kanahara Vivek A.Kumar | 2016 | Bioactive Materials2016，1，2： | 2 |
| 5 | iPSC-derived cranial neural crest-like cells can replicate dental pulp tissue with the aid of angiogenic hydrogel显示文摘The dental pulp has irreplaceable roles in maintaining healthy teeth and its regeneration is a primary aim of regenerative endodontics.This study aimed to replicate the characteristics of dental pulp tissue by using cranial neural crest(CNC)-like cells(CNCLCs);these cells were generated by modifying several steps of a previously established method for deriving NC-like cells from induced pluripotent stem cells(iPSCs).CNC is the anterior region of the neural crest in vertebrate embryos,which contains the primordium of dental pulp cells or odontoblasts.The produced CNCLCs showed approximately 2.5-12,000-fold upregulations of major CNC marker genes.Furthermore,the CNCLCs exhibited remarkable odontoblastic differentiation ability,especially when treated with a combination of the fibroblast growth factors(FGFs)FGF4 and FGF9.The FGFs induced odontoblast marker genes by 1.7-5.0-fold,as compared to bone morphogenetic protein 4(BMP4)treatment.In a mouse subcutaneous implant model,the CNCLCs briefly fated with FGF4+FGF9 replicated dental pulp tissue characteristics,such as harboring odontoblast-like cells,a dentin-like layer,and vast neovascularization,induced by the angiogenic self-assembling peptide hydrogel(SAPH),SLan.SLan acts as a versatile biocompatible scaffold in the canal space.This study demonstrated a successful collaboration between regenerative medicine and SAPH technology. | Yoshifumi Kobayashi Julie Nouet Erdenechimeg Baljinnyam Zain Siddiqui Daniel HFine Diego Fraidenraich Vivek A.Kumar Emi Shimizu | 2022 | Bioactive Materials2022，7，8： | 2 |
| 6 | Effect of Substrate and Annealing Temperatures on Mechanical Properties of Ti-rich NiTi Films显示文摘The effect of substrate and annealing temperatures on mechanical properties of Ti-rich NiTi films deposited on Si (100) substrates by DC magnetron sputtering was studied by nanoindentation.NiTi films were deposited at two substrate temperatures viz.300 and 400 ℃.NiTi films deposited at 300 ℃ were annealed for 4 h at four different temperatures,i.e.300,400,500 and 600 C whereas films deposited at 400 ℃ were annealed for 4 h at three different temperatures,i.e.400,500 and 600 ℃.The elastic modulus and hardness of the films were found to be the same in the as-deposited as well as annealed conditions for both substrate temperatures.For a given substrate temperature,the hardness and elastic modulus were found to remain unchanged as long as the films were amorphous.However,both elastic modulus and hardness showed an increase with increasing annealing temperature as the films become crystalline.The results were explained on the basis of the change in microstructure of the film with change in annealing temperature. | A.Kumar S.K.Sharma S.Bysakh S.V.Kamat S.Mohan | 2010 | Journal of Materials Science & Technology2010，26，11： | 2 |
| 7 | Gradient HPLC of antibiotics in urine,ground water,chicken muscle,hospital wastewater,and pharmaceutical samples using C-18and RP-amide columns显示文摘 | A.Kumar A.K.Malik D.K.Tewary | | 0，，： | 1 |
| 8 | Lyocell纤维及其混纺织物湿处理中的纤维素酶显示文摘 | A.Kumar 杨泽志 张建春 | 2000 | 国外纺织技术(纺织针织服装化纤染整)2000，，5： | 1 |
| 9 | 查看详情显示文摘 | R.J.Zeches M.D.Rossell J.X.Zhang A.J.Hatt Q.He C.H.Yang A.Kumar C.H.Wang A.Melville C.Adamo G.Sheng Y.H.Chu J.F.Ihlefeld R.Erni C.Ederer V.Gopalan L.Q.Chen D.G.Schlom N.A.Spaldin L.W.Martin and R.Ramesh | | 0，，5955： | 1 |
| 10 | ZnO nanocrystalline powder synthesized by ultrasonic mist-chemical vapour deposition显示文摘 | P.Singh A.Kumar Deepak D.Kaur | | 0，，： | 1 |
| 11 | 查看详情显示文摘 | D.Mazumdar V.Shelke M.Iliev S.Jesse A.Kumar S.V.Kalinin A.P.Baddorf and A.Gupta | | 0，，07： | 1 |
| 12 | The haemodynamic response to propranolol in cirrhosis with arterial hypertension: a comparative analysis with normotensive cirrhotic patients显示文摘 | P.Sharma A.Kumar S.Jha S. R.Mishra B. C.Sharma S. K.Sarin | 2010 | Alimentary Pharmacology & Therapeutics2010，，1： | 1 |
| 13 | Influence of Al_2O_3 particles on the microstructure and mechanical properties of copper surface composites fabricated by friction stir processing显示文摘The influence of three factors, such as volume percentage of reinforcement particles(i.e. Al2O3), tool tilt angle and concave angle of shoulder, on the mechanical properties of Cue Al2O3 surface composites fabricated via friction stir processing was studied. Taguchi method was used to optimize these factors for maximizing the mechanical properties of surface composites. The fabricated surface composites were examined by optical microscope for dispersion of reinforcement particles. It was found that Al2O3 particles are uniformly dispersed in the stir zone. The tensile properties of the surface composites increased with the increase in the volume percentage of the Al2O3 reinforcement particles.This is due to the addition of the reinforcement particles which increases the temperature of recrystallization by pinning the grain boundaries of the copper matrix and blocking the movement of the dislocations. The observed mechanical properties are correlated with microstructure and fracture features. | L.SUVARNA RAJU A.KUMAR | 2014 | Defence Technology(防务技术)2014，10，4： | 1 |
| 14 | Reliability analysis of waste clean up manipulator using genetic algorithms and fuzzy methodology显示文摘 | N.Kumar J.-H.Borm A.Kumar | | 0，，02： | 1 |
| 15 | Summer monsoon convection in the Himalayan region:Terrain and land cover effects显示文摘 | Medina S R.A.Houze Jr A.Kumar D.Niyogi | | 0，，： | 1 |
| 16 | Corneal graft rejection显示文摘 | Anita Panda M.Vanathi A.Kumar | | 0，，04： | 1 |
| 17 | Erratum:Measurement of(n,α)and(n,2n)reaction cross sections at a neutron energy of 14.92±0.02 MeV for potassium and copper with uncertainty propagation,[A.Gandhi,Aman Sharma,Rebecca Pachuau et al.,Chin.Phys.C 46,014002(2022)]显示文摘Experimentally measured neutron activation cross sections are presented for the^(65)Cu(n,α)^(62m)Cu,^(41)K(n,α)^(38)Cl,and^(65)Cu(n,2n)^(64)Cu reactions with detailed uncertainty propagation.The neutron cross sections were measured at an incident energy of 14.92±0.02 MeV,and the neutrons were based on the t(d,n)αfusion reaction.The^(27)Al(n,α)^(24)Na reaction was used as a reference reaction for the normalization of the neutron flux.The pre-calibrated lead-shielded HPGe detector was used to detect the residues'γ-ray spectra.The data from the measured cross sections are compared to the previously measured cross sections from the EXFOR database,theoretically calculated cross sections using the TALYS and EMPIRE codes,and evaluated nuclear data. | A.Gandhi Aman Sharma Rebecca Pachuau Namrata Singh L.S.Danu S.V.Suryanarayana B.K.Nayak A.Kumar | 2022 | Chinese Physics C2022，46，7： | 1 |
| 18 | A reference model for team-enabled workflow management systems显示文摘 | W.M.P.VAN DER AALST A.KUMAR | | 0，，03： | 1 |
| 19 | Angiogenic CXC chemokine expression during differentiation of human mesenchymal stem cells towards the osteoblastic lineage显示文摘 | D.S.Bischoff J.H.Zhu N.S.Makhijani A.Kumar D.T.Yamaguchi | 2008 | J Cell Biochem2008，，3： | 1 |
| 20 | Wavelength conversion in optical networks显示文摘 | J.Kleinberg A.Kumar | | 0，，01： | 1 |
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