Nephrology

Massry, Shaul G. MediMedia Korea 1991 JAMA-Korea Vol.6 No.11

Intra-regional Trade Effects of ASEAN Free Trade Area in the Textile and Clothing Industry

( Mohammed Faiz Shaul Hamid ),( Mohamed Aslam ) 세종대학교 경제통합연구소(구 세종대학교 국제경제연구소) 2017 Journal of Economic Integration Vol.32 No.3

This study investigates intra-regional trade effects of the ASEAN Free Trade Area in the textile and clothing industry by focusing on trade competitiveness and complementarities. Using a novel method of investigating intra-regional trade through 20 bilateral pairs of ASEAN countries, the study analyzed 1,040 observations at the HS3 level to determine revealed comparative advantage and intra-industry trade. The results for both revealed comparative advantage and intra-industry trade in the context of the textile and clothing industry show that most ASEAN countries compete predominantly in trade of unprocessed products or raw materials. Consumer or finished products do not exhibit a high degree of competition, which suggests that product diversification has enabled ASEAN countries to actively export to the global market. The results also show trade-creating and trade-diverting effects in a number of products categories, categories, suggesting that this divergence may disrupt ASEAN`s vision of becoming a regional hub for the textile and clothing industry.

Thrombophilia, Left Ventricular Dysfunction and Intracardiac Thrombi in Children

Ibrahim Abu-Kishk,Shaul Baram,Eran Kozer,Baruch Klin,Gideon Eshel 대한심장학회 2011 Korean Circulation Journal Vol.41 No.8

Background and Objectives: Reports on the incidence of intracardiac thrombi (ICT) have increased over the last few decades, but ICT are still relatively rare among children. Left ventricular systolic dysfunction and dilatation may contribute to the formation of ICT, especially when a hypercoagulable state exists. The aim of this study was to describe the incidence of ICT in children suffering from cardiac failure with left ventricular dysfunction and to identify risk factors on admission for developing ICT. Subjects and Methods: We conducted a retrospective chart review of children up to 18 years of age admitted to the Pediatric Intensive Care Unit due to cardiac failure with left ventricular dysfunction between January 1, 2003 and December 31, 2008. Results: Twenty-one patients were admitted with clinical signs of cardiac failure and echocardiographic findings compatible with dilated cardiomyopathy or acute myocarditis. Dilated cardiomyopathy was diagnosed in 11 patients (52%). Adenoviruses and enteroviruses were suspected to be the cause of acute myocarditis in 5 cases. The personal or family history of hypercoagulable states were obtained from 19 out of 21 patients (90%). Among patients with a hypercoagulable state, 3 out of 7 developed ICT compared with none out of 12 among patients without hypercoagulability (p=0.043). Two of these 3 patients experienced an embolic event. Conclusion: Cardiac failure with left ventricular dysfunction may predispose the patient to ICT and increase the risk of thromboembolism, especially when an underlying hypercoagulable state exists. The hypercoagulable state must be carefully evaluated on admission in these patients.

Nonlinear Response of Classical Dynamical Systems to Short Pulses

Dellago, Christoph,Mukamel, Shaul Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.8

Valuable insight into the nonlinear dynamics of a system can be gleaned from its response to a single intense short pulse. We derive expressions for the corresponding nonlinear response functions and show that the fluctuation-dissipation theorem may be extended beyond the linear response limit to an arbitrary pulse intensity. As an illustrative example, we calculate response functions up to 11th order for the regular Lorentz gas in two dimensions.

Arnoldi Algorithm for the Simulation of Multidimensional Infrared Spectroscopy

Hayashi, Tomoyuki,Mukamel, Shaul Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.8

The cubic and quartic anharmonic force field of malonaldehyde is calculated using density functional theory at the B3LYP/6-31G(d,p) level, and used to simulate coherent infrared vibrational spectra. 12 normal modes are included in the simulation, and the Arnoldi method is employed for the diagonalization of the Hamiltonian. The calculated three pulse infrared signals in the k1 + k2 - k3 direction show signatures of the intramolecular hydrogen bond couplings between the C=O stretch, H-O-C bend and O-H stretch vibrations.

Mapping mammalian synaptic connectivity

Yook, Chaehyun,Druckmann, Shaul,Kim, Jinhyun Springer Basel 2013 Cellular and molecular life sciences Vol.70 No.24

<P>Mapping mammalian synaptic connectivity has long been an important goal of neuroscientists since it is considered crucial for explaining human perception and behavior. Yet, despite enormous efforts, the overwhelming complexity of the neural circuitry and the lack of appropriate techniques to unravel it have limited the success of efforts to map connectivity. However, recent technological advances designed to overcome the limitations of conventional methods for connectivity mapping may bring about a turning point. Here, we address the promises and pitfalls of these new mapping technologies.</P>

Tensor Components in Three Pulse Vibrational Echoes of a Rigid Dipeptide

Dreyer, Jens,Moran, Andrew M.,Mukamel, Shaul Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.8

The effects of different polarization conditions on vibrational echo signals are systematically explored for the rigid cyclic dipeptide 2,5-diazabicyclo[2,2,2]octane-3,6-dione. An anharmonic vibrational Hamiltonian is constructed by computing energy derivatives to fourth order using density functional theory. Molecular frame transition dipole orientations are then used to calculate polarization dependent orientational factors corresponding to various Liouville space pathways. Enhancement and elimination of specific peaks in twodimensional correlation plots is accomplished by identifying appropriate pulse configurations.

Schaffer Collateral Inputs to CA1 Excitatory and Inhibitory Neurons Follow Different Connectivity Rules

Kwon, Osung,Feng, Linqing,Druckmann, Shaul,Kim, Jinhyun Society for Neuroscience 2018 The Journal of neuroscience Vol.38 No.22

<P>Neural circuits, governed by a complex interplay between excitatory and inhibitory neurons, are the substrate for information processing, and the organization of synaptic connectivity in neural network is an important determinant of circuit function. Here, we analyzed the fine structure of connectivity in hippocampal CA1 excitatory and inhibitory neurons innervated by Schaffer collaterals (SCs) using mGRASP in male mice. Our previous study revealed spatially structured synaptic connectivity between CA3 and CA1 pyramidal cells (PCs). Surprisingly, parvalbumin-positive interneurons (PVs) showed a significantly more random pattern spatial structure. Notably, application of Peters' rule for synapse prediction by random overlap between axons and dendrites enhanced structured connectivity in PCs, but, by contrast, made the connectivity pattern in PVs more random. In addition, PCs in a deep sublayer of striatum pyramidale appeared more highly structured than PCs in superficial layers, and little or no sublayer specificity was found in PVs. Our results show that CA1 excitatory PCs and inhibitory PVs innervated by the same SC inputs follow different connectivity rules. The different organizations of fine scale structured connectivity in hippocampal excitatory and inhibitory neurons provide important insights into the development and functions of neural networks.</P>

Computational studies on electron and proton transfer in phenol-imidazole-base triads

Yan, Shihai,Kang, Sunwoo,Hayashi, Tomoyuki,Mukamel, Shaul,Lee, Jin Yong Wiley Subscription Services, Inc., A Wiley Company 2010 Journal of computational chemistry Vol.31 No.2

<P>The electron and proton transfer in phenol-imidazole-base systems (base = NH<SUB>2</SUB><SUP>−</SUP> or OH<SUP>−</SUP>) were investigated by density-functional theory calculations. In particular, the role of bridge imidazole on the electron and proton transfer was discussed in comparison with the phenol-base systems (base = imidazole, H<SUB>2</SUB>O, NH<SUB>3</SUB>, OH<SUP>−</SUP>, and NH<SUB>2</SUB><SUP>−</SUP>). In the gas phase phenol-imidazole-base system, the hydrogen bonding between the phenol and the imidazole is classified as short strong hydrogen bonding, whereas that between the imidazole and the base is a conventional hydrogen bonding. The n value in sp<SUP>n</SUP> hybridization of the oxygen and carbon atoms of the phenolic CO sigma bond was found to be closely related to the CO bond length. From the potential energy surfaces without and with zero point energy correction, it can be concluded that the separated electron and proton transfer mechanism is suitable for the gas-phase phenol-imidazole-base triads, in which the low-barrier hydrogen bond is found and the delocalized phenolic proton can move freely in the single-well potential. For the gas-phase oxidized systems and all of the triads in water solvent, the homogeneous proton-coupled electron transfer mechanism prevails. © 2009 Wiley Periodicals, Inc. J Comput Chem, 2010</P> <B>Graphic Abstract</B> <P> <img src='wiley_img/01928651-2010-31-2-JCC21339-gra001.gif' alt='wiley_img/01928651-2010-31-2-JCC21339-gra001'> </P>

Signatures of Through-Space Charge Transfer in Two-Photon Absorption of Paracyclophane Derivatives

Abbas Salimi,조대흠,이진용,강선우,Shaul Mukamel 대한화학회 2019 Bulletin of the Korean Chemical Society Vol.40 No.11

Third order polarizability, (?) taken from the collective electronic oscillator (CEO) method was used to calculate the two-photon absorption (TPA) of tetrastyryl-[2,2]paracyclophane derivatives with different through-space charge transfer configurations considering various donor and acceptor combinations at the terminal styryl groups. For the virtually same linear absorption, different TPA spectra were obtained. For controlling and fine-tuning frequency and cross-sections of TPA the through-space charge transfer interactions can be used. The results are explained by the electronic density matrices corresponding to governing oscillators in one- and two-photon absorption and the ground state. It is indicated that for the studied systems mainly the lowest four oscillators are responsible for the TPA cross-sections rather than a simple effective three-state model.