http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Acharya, S.K.,Ahn, B.G.,Jung, C.U.,Koh, J.H.,Choi, I.H.,Lee, S.K. Elsevier Sequoia 2014 JOURNAL OF ALLOYS AND COMPOUNDS Vol.603 No.-
Rb doped 0.94Bi<SUB>0.5</SUB>Na<SUB>0.5</SUB>TiO<SUB>3</SUB>-0.06BaTiO<SUB>3</SUB> (BNT-BT-Rb<SUB>x</SUB>) thin films with xmol% Rb (x=0, 2.5, 5, 7.5, 10) were deposited on Pt/Ti/SiO<SUB>2</SUB>/Si substrate by metal-organic solution deposition method. Experiments were conducted to investigate the effect of Rb doping on phase formation, microstructure, leakage current, and the resulting ferroelectric and piezoelectric property. It was found that substantial enhancement in structural, morphological and electrical properties can be achieved by Rb doping of BNT-BT thin films. Optimal electrical properties were obtained for 5mol% Rb doped BNT-BT thin films, with a dielectric constant, remnant polarization, and effective piezoelectric constant of ~681, ~28.9μC/cm<SUP>2</SUP> and ~86pm/V, respectively. It was suggested that the enhanced electrical properties in the case of 5mol% Rb BNT-BT thin films can be attributed to domain wall movement induced by A-site substitutions, large grain size, and lattice distortion.
The hydrogel template method for fabrication of homogeneous nano/microparticles
Acharya, G.,Shin, C.S.,McDermott, M.,Mishra, H.,Park, H.,Kwon, I.C.,Park, K. Elsevier Science Publishers 2010 Journal of controlled release Vol.141 No.3
Nano/microparticles have been used widely in drug delivery applications. The majority of the particles are prepared by the conventional emulsion methods, which tend to result in particles with heterogeneous size distribution with sub-optimal drug loading and release properties. Recently, microfabrication methods have been used to make nano/microparticles with a monodisperse size distribution. The existing methods utilize solid templates for making particles, and the collection of individual particles after preparation has not been easy. The new hydrogel template approach was developed to make the particle preparation process simple and fast. The hydrogel template approach is based on the unique properties of physical gels that can undergo sol-gel phase transition upon changes in environmental conditions. The phase reversible hydrogels, however, are in general mechanically too weak to be treated as a solid material. It was unexpectedly found that gelatin hydrogels could be made to possess various properties necessary for microfabrication of nano/microparticles in large quantities. The size of the particles can be adjusted from 200nm to >50@?m, providing flexibility in controlling the size in drug delivery formulations. The simplicity in processing makes the hydrogel template method useful for scale-up manufacturing of particles. The drug loading capacity is 50% or higher, and yet the initial burst release is minimal. The hydrogel template approach presents a new strategy of preparing nano/microparticles of predefined size and shape with homogeneous size distribution for drug delivery applications.
Acharya, Suresh,Stark, Timo D.,Oh, Seung Tack,Jeon, Songhee,Pak, Sok Cheon,Kim, Mina,Hur, Jinyoung,Matsutomo, Toshiaki,Hofmann, Thomas,Hill, Rodney A.,Balemba, Onesmo B. American Chemical Society 2017 Journal of agricultural and food chemistry Vol.65 No.18
<P>We investigated the antioxidative properties of (2R,3S,2'R,3'R)-manniflavanone (MF) using in vitro assays and examined its effects on myogenesis and lactate-induced oxidative stress in C2C12 cells. MF was purified from Garcinia buchananii stem bark. H2O2 and oxygen radical absorbance capacity assays demonstrated that MF is a powerful antioxidant. This finding was supported by diphenylpicrylhydrazine radical scavenging activity of MF. MF was less cytotoxic to C2C12 cells compared to ascorbic acid and myricetin. Moreover, MF accelerated myotube formation in the differentiated C2C12 cells by up-regulating myogenic proteins such as MyoG and myosin heavy chain. Furthermore, MF rescued late differentiation of myoblast suppressed by lactate treatment and up -regulated the expression levels of Nrf2 in lactate -induced oxidative stress, indicating that MF stimulates antioxidative activity inside C2C12 cells. Collectively, MF is a potent antioxidant with a higher safety profile than ascorbic acid and myricetin. It reduces oxidative stress -induced delaying of skeletal muscle differentiation by scavenging reactive oxygen species and regulating myogenic proteins factors.</P>
Inclusive J/<i>ψ</i> production in Xe–Xe collisions at <sub> s NN </sub> = 5.44 TeV
Acharya, S.,Acosta, F.T.-.,Adamová,, D.,Adolfsson, J.,Aggarwal, M.M.,Aglieri Rinella, G.,Agnello, M.,Agrawal, N.,Ahammed, Z.,Ahn, S.U.,Aiola, S.,Akindinov, A.,Al-Turany, M.,Alam, S.N.,Albuquerqu North-Holland Pub. Co 2018 Physics letters. Section B Vol.785 No.-
<P><B>Abstract</B></P> <P>Inclusive J/<I>ψ</I> production is studied in Xe–Xe interactions at a centre-of-mass energy per nucleon pair of <SUB> s NN </SUB> = 5.44 TeV, using the ALICE detector at the CERN LHC. The J/<I>ψ</I> meson is reconstructed via its decay into a muon pair, in the centre-of-mass rapidity interval 2.5 < y < 4 and down to zero transverse momentum. In this Letter, the nuclear modification factors <SUB> R AA </SUB> for inclusive J/<I>ψ</I>, measured in the centrality range 0–90% as well as in the centrality intervals 0–20% and 20–90% are presented. The <SUB> R AA </SUB> values are compared to previously published results for Pb–Pb collisions at <SUB> s NN </SUB> = 5.02 TeV and to the calculation of a transport model. A good agreement is found between Xe–Xe and Pb–Pb results as well as between data and the model.</P>
Acharya, S.,Adamová,, D.,Adolfsson, J.,Aggarwal, M.M.,Aglieri Rinella, G.,Agnello, M.,Agrawal, N.,Ahammed, Z.,Ahn, S.U.,Aiola, S.,Akindinov, A.,Al-Turany, M.,Alam, S.N.,Albuquerque, D.S.D.,Aleks North-Holland Pub. Co 2018 Physics letters. Section B Vol.780 No.-
<P><B>Abstract</B></P> <P>The production of <SUP> Z 0 </SUP> bosons at large rapidities in Pb–Pb collisions at <SUB> s NN </SUB> = 5.02 TeV is reported. <SUP> Z 0 </SUP> candidates are reconstructed in the dimuon decay channel ( <SUP> Z 0 </SUP> → <SUP> μ + </SUP> <SUP> μ − </SUP> ), based on muons selected with pseudo-rapidity − 4.0 < η < − 2.5 and <SUB> p T </SUB> > 20 GeV/ c . The invariant yield and the nuclear modification factor, <SUB> R AA </SUB> , are presented as a function of rapidity and collision centrality. The value of <SUB> R AA </SUB> for the 0–20% central Pb–Pb collisions is 0.67 ± 0.11 (stat.) ± 0.03 (syst.) ± 0.06 (corr. syst.) , exhibiting a deviation of 2.6<I>σ</I> from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3<I>σ</I> in the 0–90% centrality class and by 3<I>σ</I> in the 0–20% central collisions.</P>
Study of the Λ–Λ interaction with femtoscopy correlations in p p and p–Pb collisions at the LHC
Acharya, S.,Adamová,, D.,Adhya, S.P.,Adler, A.,Adolfsson, J.,Aggarwal, M.M.,Aglieri Rinella, G.,Agnello, M.,Agrawal, N.,Ahammed, Z.,Ahmad, S.,Ahn, S.U.,Aiola, S.,Akindinov, A.,Al-Turany, M.,Alam North-Holland Pub. Co 2019 Physics letters. Section B Vol.797 No.-
<P><B>Abstract</B></P> <P>This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in ▪ collisions at s = 13 TeV and p – Pb collisions at <SUB> s NN </SUB> = 5.02 TeV, combined with previously published results from ▪ collisions at s = 7 TeV. The Λ–Λ scattering parameter space, spanned by the inverse scattering length f 0 − 1 and the effective range <SUB> d 0 </SUB> , is constrained by comparing the measured Λ–Λ correlation function with calculations obtained within the Lednický model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the Λ–Λ interaction. The region in the ( f 0 − 1 , <SUB> d 0 </SUB> ) plane which would accommodate a Λ–Λ bound state is substantially restricted compared to previous studies. The binding energy of the possible Λ–Λ bound state is estimated within an effective-range expansion approach and is found to be <SUB> B Λ Λ </SUB> = 3.2 − 2.4 + 1.6 (stat) − 1.0 + 1.8 (syst) MeV.</P>
Measurement of jet radial profiles in Pb–Pb collisions at <sub> s NN </sub> = 2.76 TeV
Acharya, S.,Adamová,, D.,Adhya, S.P.,Adler, A.,Adolfsson, J.,Aggarwal, M.M.,Aglieri Rinella, G.,Agnello, M.,Agrawal, N.,Ahammed, Z.,Ahmad, S.,Ahn, S.U.,Aiola, S.,Akindinov, A.,Al-Turany, M.,Alam North-Holland Pub. Co 2019 Physics letters. Section B Vol.796 No.-
<P><B>Abstract</B></P> <P>The jet radial structure and particle transverse momentum ( <SUB> p T </SUB> ) composition within jets are presented in centrality-selected Pb–Pb collisions at <SUB> s NN </SUB> = 2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R = 0.3 at midrapidity | <SUB> η ch jet </SUB> | < 0.6 for transverse momenta <SUB> p T , ch jet </SUB> = 30 –120 GeV/<I>c</I>. Jet–hadron correlations in relative azimuth and pseudorapidity space ( Δ φ , Δ η ) are measured to study the distribution of the associated particles around the jet axis for different <SUB> p T , assoc </SUB> -ranges between 1 and 20 GeV/<I>c</I>. The data in Pb–Pb collisions are compared to reference distributions for pp collisions, obtained using embedded PYTHIA simulations. The number of high- <SUB> p T </SUB> associate particles ( 4 < <SUB> p T , assoc </SUB> < 20 GeV/<I>c</I>) in Pb–Pb collisions is found to be suppressed compared to the reference by 30 to 10%, depending on centrality. The radial particle distribution relative to the jet axis shows a moderate modification in Pb–Pb collisions with respect to PYTHIA. High- <SUB> p T </SUB> associate particles are slightly more collimated in Pb–Pb collisions compared to the reference, while low- <SUB> p T </SUB> associate particles tend to be broadened. The results, which are presented for the first time down to <SUB> p T , ch jet </SUB> = 30 GeV/<I>c</I> in Pb–Pb collisions, are compatible with both previous jet–hadron-related measurements from the CMS Collaboration and jet shape measurements from the ALICE Collaboration at higher <SUB> p T </SUB> , and add further support for the established picture of in-medium parton energy loss.</P>
ACHARYA TRI DEV,양인태,이동하 한국측량학회 2018 한국측량학회지 Vol.36 No.1
DEM (Digital Elevation Model) is a useful dataset which represents the earth surface. Beside many applications, production and frequent update of DEM is a costly task. Recently global satellite based DEMs are available which has huge potential for application. To check the accuracy, this study compares two global DEMs: AW3D30 (Advanced Land Observing Satellite World 3D 30m) and SRTM30 (Shuttle Radar Topography Mission Global 30m) with reference resampled LiDAR DEM 30m in a test area around Chuncheon, Korea. The comparison analysis was based on statistics of each DEM, their difference, profiles, slope, basin and stream orders. As a result, it is found that SRTM30 and AW3D30 were much similar but inconsistent in the test area compared to the LiDAR30 DEM. In addition, SRTM30 shows less difference with LiDAR30 compared to the AW3D30 DEM. But, DEMs should be very carefully examined for area which has temporal or season changes. For basin and stream analysis, global DEMs can be used only for regional scale analysis not local large scales.