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Duong, T.T.,Tuan, T.Q.,Dung, D.V.A.,Van Quy, N.,Vu, D.L.,Nam, M.H.,Chien, N.D.,Yoon, S.G.,Le, A.T. Elsevier 2014 CURRENT APPLIED PHYSICS Vol.14 No.12
Polyaniline nanowires (PANI NWs) were deposited onto fluorine-doped tin oxide (FTO) glass substrate using the cyclic voltammetric method with aniline monomer precursor in HCl aqueous solution. The secondary oxidation peak plays an important role in polymerization of aniline monomer and the optimization of catalytic activity of PANI-based counter electrodes was achieved by controlling the number of cycles. The photovoltaic performance of the dye-sensitized solar cells (DSSCs) with PANI NWs counter electrodes (CEs) was optimized at 4th cycles, and then following parameters were obtained: J<SUB>sc</SUB> = 17.2 mA cm<SUP>-2</SUP>, V<SUB>oc</SUB> = 0.71 V, FF = 59.3%, and efficiency (η) = 7.24%. While, J<SUB>sc</SUB> = 14.7 mA cm<SUP>-2</SUP>, V<SUB>oc</SUB> = 0.77 V, FF = 70.6%, and efficiency (η) = 7.98% in cells with Pt CEs. The PANI NWs were attractive as an alternative CEs for the low-cost DSSCs instead of Pt.
Extranodal NK/T-Cell Lymphoma, Nasal Type, Extranasal and Ulcerative Blister Variant, Case Report
Yadira Noemí Chávez Dávila,Víctor Hugo Pinos León,Sonia Tello Astudillo,Grace Margreth Loza Erazo,Jennyfer Daniela Granizo Rubio 대한피부과학회 2023 Annals of Dermatology Vol.35 No.-
The extranodal natural killer (NK) T-cell lymphoma of nasal type is a form of lymphoma that falls within the WHO/EORTC 2018 classification of cutaneous T-cell lymphomas. It is characterized for being aggressive, infrequent, and destroying midline facial structures; however, it can also be in primary or secondary form at extranasal sites, such as the skin or the gastrointestinal tract, among others. We report the case of an 18-year-old patient with an extranodal NK/T-cell lymphoma located in an extranasal site. The clinical presenta- tion is characterized for being multifocal and with erythematous-violaceous plaques that progress to hemorrhagic blisters and necrotic ulcers. Although this type of lymphoma has been reported previously by others, the presence of blisters is an atypical finding, which we believe has been described only in one case in the medical literature.
Extranodal NK/T-Cell Lymphoma, Nasal Type, Extranasal and Ulcerative Blister Variant, Case Report
( Yadira Noemí Chávez Dávila ),( Víctor Hugo Pinos León ),( Sonia Tello Astudillo ),( Grace Margreth Loza Erazo ),( Jennyfer Daniela Granizo Rubio ) 대한피부과학회 2023 Annals of Dermatology Vol.35 No.7
The extranodal natural killer (NK) T-cell lymphoma of nasal type is a form of lymphoma that falls within the WHO/EORTC 2018 classification of cutaneous T-cell lymphomas. It is characterized for being aggressive, infrequent, and destroying midline facial structures; however, it can also be in primary or secondary form at extranasal sites, such as the skin or the gastrointestinal tract, among others. We report the case of an 18-year-old patient with an extranodal NK/T-cell lymphoma located in an extranasal site. The clinical presentation is characterized for being multifocal and with erythematous-violaceous plaques that progress to hemorrhagic blisters and necrotic ulcers. Although this type of lymphoma has been reported previously by others, the presence of blisters is an atypical finding, which we believe has been described only in one case in the medical literature.
Extended Gaussian Filtering for Noise Reduction in Spectral Analysis
Le V. L.,Kim T. J.,Kim Y. D.,Aspnes D. E. 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.77 No.10
We present a method of reducing noise in spectra that is based on eliminating low-order derivatives of reciprocal-space (RS) filter functions, yet ensuring that the functions roll off smoothly to minimize Gibbs oscillations. The approach takes advantage of the fact that information and noise are separated in RS. The method preserves as much information as possible, while reducing or even eliminating unwanted contributions (noise). To demonstrate the method we apply it to a model spectrum, data including an XPS spectrum of S2p in hierarchical NiCo2S4 nanosheets, and the Raman spectrum of 10-layer film of FePS3 with polarization direction of 90° with respect to the a-axis.
External removal of endpoint-discontinuity artifacts in the reciprocal-space analysis of spectra
V.L. Le,T.J. Kim,Y. D. Kim,D.E. Aspnes 한국물리학회 2020 Current Applied Physics Vol.20 No.1
We present a systematic method of removing endpoint-discontinuity artifacts in the Fourier analysis of spectral segments, enabling the more accurate extraction of information. This principal-component-removal approach differs from a previous version by using extrapolated (or extended) data outside rather than inside the spectral range. This not only allows coefficients to be accessed to the white-noise limit with no distortion of the segment, but also generates interpolated coefficients for improved analytic insight. Examples are provided.
Le, V.P.,Nguyen, T.,Lee, K.N.,Ko, Y.J.,Lee, H.S.,Nguyen, V.C.,Mai, T.D.,Do, T.H.,Kim, S.M.,Cho, I.S.,Park, J.H. Elsevier Scientific Pub. Co 2010 Veterinary microbiology Vol.144 No.1
Foot-and-mouth disease (FMD) is a major cause of endemic outbreaks in Vietnam in recent years. In this work, six serotype A foot-and-mouth disease viruses (FMDV), collected from endemic outbreaks during January and February of 2009 in four different provinces in Vietnam, were genetically characterized for their complete genome sequences. Genetic analysis based on the complete viral genome sequence indicated that they were closely related to each other and shared 99.0-99.8% amino acid (aa) identity. Genetic and deduced aa analysis of the capsid coding gene VP1 showed that the six Vietnamese strains were all classified into the genotype IX from a total of 10 major genotypes worldwide, sharing 98.1-100% aa identity each other. They were most closely related to the type A strains recently isolated in Laos (A/LAO/36/2003, A/LAO/½006, A/LAO/6/2006, A/LAO/7/2006, and A/LAO/8/2006), Thailand (A/TAI/2/1997 and A/TAI/118/1987), and Malaysia (A/MAY/2/2002), sharing 88.3-95.5% nucleotide (nt) identities. In contrast, Vietnamese type A strains showed low nt identities with the two old type A FMDVs, isolated in 1960 in Thailand (a15thailand iso43) and in 1975 in the Philippines (aphilippines iso50), ranging from 77.3 to 80.9% nt identity. A multiple alignment based on the deduced amino acid sequences of the capsid VP1 coding gene of type A FMDV revealed three amino acid substitutions between Vietnamese strains and the strains of other Southeast Asian countries (Laos, Thailand, Malaysia, and the Philippines). Alanine was replaced by valine at residue 24, asparagine by arginine at residue 85, and serine by threonine at residue 196. Furthermore, type A FMDV strains recently isolated in Vietnam, Laos, Thailand, and Malaysia all have one amino acid deletion at residue 140 of the capsid VP1 protein compared with the two old type A FMDV strains from Thailand and the Philippines as well as most other type A representatives worldwide. This article is the first to report on the comprehensive genetic characterization of type A FMDV circulating in Vietnam.
CCQM-K90, formaldehyde in nitrogen, 2 μmol mol<sup>−1</sup> Final report
Viallon, le,Flores, Edgar,Idrees, Faraz,Moussay, Philippe,Wielgosz, Robert Ian,Kim, D,Kim, Y D,Lee, S,Persijn, S,Konopelko, L A,Kustikov, Y A,Malginov, A V,Chubchenko, I K,Klimov, A Y,Efremova, O V,Zh BUREAU INTERNATIONAL DES POIDS ET MESURES 2017 METROLOGIA -BERLIN- Vol.54 No.1
Nguyen, V.D.,Han, J.,Go, G.,Zhen, J.,Zheng, S.,Le, V.H.,Park, J.O.,Park, S. Elsevier Sequoia 2017 Sensors and actuators. B Chemical Vol.240 No.-
This work aims to develop a novel electromagnetic and macrophage-mediated drug delivery system to transport anticancer drug (Paclitaxel, PTX)-encapsulated magnetic liposomes (PTX-MLPs) to tumors. The PTX-MLPs are engulfed into macrophages by phagocytosis of murine macrophages (J774A1). Therefore, the macrophages with PTX-MLPs can be dually targeted both by an external electromagnetic field and by chemotaxis of the macrophages to the tumors. Under the electromagnetic field, a single macrophage with PTX-MLPs can be controlled following predefined paths and can reach an average velocity of 10.48+/-4.43μm/s. Meanwhile, using chemotaxis, the macrophages with PTX-MLPs can infiltrate through a 5μm pore membrane to chemo-attractants in transwell migration assays, with infiltration rate of up to 73.70+/-4.63%. In addition, their therapeutic efficacy is investigated using an in-vitro cytotoxicity assay on breast cancer (4T1) and colorectal cancer (CT26) models. The results confirm that the macrophages with PTX-MLPs can carry a sufficient amount of drug to kill the cancer cells with the IC<SUB>50</SUB> values for the 4T1 and CT26 cells of 52.97+/-1.06μg/mL and 117.04+/-1.82μg/mL, respectively. The outcomes of this study suggest that a potential active cancer therapy can be developed through the dual targeting system using macrophages with PTX-MLPs and magnetic actuation.
Temperature dependence of the dielectric function of monolayer MoS2
V.L. Le,T.J. Kim,H.G. Park,H.T. Nguyen,X.A. Nguyen,Y. D. Kim 한국물리학회 2019 Current Applied Physics Vol.19 No.2
An analytic expression of the dielectric function of monolayer molybdenum disulfide (MoS2) ε = ε1 + iε2 is presented for energies from 1.4 to 6.0 eV and temperatures from 35 to 350 K. The dielectric function parametric model is used to express ε as a sum of polynomials, which naturally includes asymmetry of critical-point lineshapes. The temperature dependence is achieved by fitting model parameters. In this way, the dielectric function of MoS2 for arbitrary temperature can be calculated. We observed the fundamental absorption peak, which occurs at the K point of the Brillouin zone. These results are expected to be useful in designing and understanding applied-device technologies based on monolayer MoS2.