Inosov, D. S., Shapoval, T., Neu, V., Wolff, U., White, J. S., Haindl, S., ...
The disordered flux line lattice in single crystals of the slightly overdoped aFe_{2-x}Co_xAs_2 (x = 0.19, Tc = 23 K) superconductor is studied by magnetization measurements, small-angle neutron...
Large single crystal growth of BaFe1.87Co0.13As2 using a nucleation pole (2009)
Sun, D. L., Liu, Y., Park, J. T., Lin, C. T.
Co-doped iron arsenic single crystal of BaFe1.87Co0.13As2 with dimension up to 20 x 10 x 2 mm3 were grown by a nucleation pole: an alumina stick served as nucleation center during growth. The high...
Inosov, D. S., Park, J. T., Bourges, P., Sun, D. L., Sidis, Y., Schneidewind, A., ...
The proximity of superconductivity and antiferromagnetism in the phase diagram of iron arsenides, the apparently weak electron-phonon coupling and the "resonance peak" in the superconducting spin...
Park, J. T., Inosov, D. S., Niedermayer, Ch., Sun, G. L., Haug, D., Christensen, N. B., ...
Here we present a combined study of the slightly underdoped novel pnictide superconductor Ba1-xKxFe₂As₂ by means of x-ray powder diffraction, neutron scattering, muon-spin rotation (µSR), and...
Park, J. T., Inosov, D. S., Niedermayer, Ch., Sun, G. L., Haug, D., Christensen, N. B., ...
Here we present a combined study of the slightly underdoped novel pnictide superconductor Ba1-xKxFe₂As₂ by means of x-ray powder diffraction, neutron scattering, muon-spin rotation (µSR), and...
Inosov, D. S., Leineweber, A., Yang, Xiaoping, Park, J. T., Christensen, N. B., Dinnebier, R., ...
We present x-ray powder diffraction (XRPD) and neutron diffraction measurements on the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe2As2, Tc = 32K. Below the magnetic transition...
Haug, D., Hinkov, V., Suchaneck, A., Inosov, D. S., Christensen, N. B., Niedermayer, Ch., ...
We present a neutron-scattering study of the static and dynamic spin correlations in the underdoped high-temperature superconductor YBa(2)Cu(3)O(6.45) in magnetic fields up to 15 T. The field...
Khasanov, R., Amato, A., Luetkens, H., Niedermayer, Ch., Sun, G. L., ...
Using muon-spin rotation, we studied the anisotropy of the magnetic-field penetration depth \gamma_\lambda=\lambda_c/\lambda_ab in an extensively characterized sample of superconducting...
Park, J. T., Inosov, D. S., Niedermayer, Ch., Sun, G. L., Haug, D., Christensen, N. B., ...
Here we present a combined study of the slightly underdoped novel pnictide superconductor Ba(1-x)K(x)Fe(2)As(2) by means of X-ray powder diffraction, neutron scattering, muon spin rotation (muSR),...
(pi,pi)-electronic order in iron arsenide superconductors (2008)
Zabolotnyy, V. B., Inosov, D. S., Evtushinsky, D. V., Koitzsch, A., Kordyuk, A. A., Sun, G. L., ...
The distribution of valence electrons in metals usually follows the symmetry of an ionic lattice. Modulations of this distribution often occur when those electrons are not stable with respect to a...
Hot-Carrier-Induced Degradation of Lateral DMOS Transistors under DC and AC Stress (2008)
Lee, In-Kyong, Yun, Se-Re-Na, Yu, Chong-Gun, Park, J.T.
This paper presents the experimental findings on the different degradation mechanism which depends on the gate oxide thickness in lateral DMOS transistors. For thin oxide devices, the generation of...
Dodge, F. T., Park, J. T., Buckingham, J. C., Magott, R. J.
Computerized models are developed to predict the spreading, movement, evaporation, and dissolution of floating slicks formed by accidental spills of insoluble chemicals. Separate models are developed...
Park,J. T., Cerwin,S. A., Rogler,H. L.
An active-wall device was developed to determine those characteristics of traveling surface waves which are important in drag reduction with compliant coatings. Feasibility of an active wall was...
Yoo, K. Y., Lee, J. U., Kwak, S. H., Im, W. M., Jeong, C. Y., Chung, S. S., ...
Background. Brief myocardial ischaemia has been demonstrated to result in mechanical and coronary endothelial dysfunction, in which calcium may play a role. We examined whether the mechanical and...
Atmospheric Boundary Layer Measurements from an Oceanic Research Tower. (1998)
Preliminary fine-scale measurements of temperature, velocity, and their derivatives in the atmosphere have been completed on a U.S. Navy oceanographic research tower. The spectra and probability...
Dodge,F. T., Park,J. T., Buckingham,J. C., Magott,R. J.
Computerized models are developed to predict the spreading, movement, evaporation, and dissolution of floating slicks formed by accidental spills of insoluble chemicals. Separate models are developed...
Superelastic and inelastic He2++He state-selective electron capture (1994)
Irby, V. D., Gay, Timothy J., Park, J. T., Bross, S. W., Gaus, A. D.
Experimental studies have been made of superelastic and inelastic collision processes involved in the state-selective single-electron capture reaction 3He2++He(1 1S)→ +He+(n)+He+(n'), where n and...
State-selective capture in collisions of protons with noble gases (1992)
Schulz, M., Blakenship, D. M., Bross, S. W., Gaus, A. D., Gay, Timothy J., Htwe, W., ...
We have measured coincidences between neutral H atoms and Lyman-α photons for collisions between 50-keV protons and noble gases as a function of the projectile scattering angle. The coincidences are...
Seely, D. G., Bross, S. W., Gaus, A. D., Edwards, J. W., Schultz, D. R., Gay, Timothy J., ...
Angular-differential cross sections for charge transfer with simultaneous emission of a photon in collisions of protons with helium atoms have been measured. The incident proton energies were 25, 50,...
Park, J. T., Grimley, T. A., Mannheimer, R. J.
Velocity measurements by laser Doppler anemometry for fully-developed turbulent flow of a transparent non-Newtonian slurry are described. The slurry was measured to be a yield-power-law...
Peacher, J. L., Redd, E., Seely, D. G., Gay, Timothy J., Blakenship, D. M., Park, J. T.
Measurements of elastic angular differential cross sections have been carried out for four quasi-one-electron collision systems at intermediate energies. Data are presented for Na++H collisions at...
A knowledge-based approach to multiple query processing (1989)
Park, J. T., Teorey, Toby J., Lafortune, Stéphane
The collective processing of multiple queries in a database system has recently received renewed attention due to its capability of improving the overall performance of a database system and its...
Angular-differential studies of excitation in quasi-oneelectron collisions at "high" energy (1987)
Redd, E., Gay, Timothy J., Blakenship, D. M., Park, J. T., Peacher, J. L., Seely, D. G.
Qualitative differences have been observed between two types of "quasi-one-electron" collision systems. We have studied valence-electron excitation at "high" energy (relative collision velocities up...
Kvale, T. J., Seely, D. G., Blakenship, D. M., Redd, E., Gay, Timothy J., Kimura, M., ...
Angular differential cross sections for the proton-impact excitation of ground-state helium (11S) to the 21S and 21P states have been measured for the first time in the energy range 25 to 100 keV...
Interactions of Yersinia pestis penicillin-binding proteins with beta-lactam antibiotics.
Ferreira, R C, Park, J T, Camelo, D, De Almeida, D F, Ferreira, L C
The affinities of six major penicillin-binding proteins (PBPs) of Yersinia pestis EV76 to different beta-lactam antibiotics were determined. The results indicate that, similar to their counterparts...
Mengin-Lecreulx, D, Van Heijenoort, J, Park, J T
A gene, mpl, encoding UDP-N-acetylmuramate:L-alanyl-gamma-D-glutamyl-meso-diaminopimelat e ligase was recognized by its amino acid sequence homology with murC as the open reading frame yjfG present...
Hara, H, Yasuda, S, Horiuchi, K, Park, J T
We constructed a null allele of the ftsI gene encoding penicillin-binding protein 3 of Escherichia coli. It caused blockage of septation and loss of viability when expression of an extrachromosomal...
Penicillin-binding proteins in Clostridium perfringens.
Murphy, T F, Barza, M, Park, J T
The penicillin-binding proteins (PBPs) of Clostridium perfringens were studied. Six PBPs ranging in molecular weight from approximately 42,000 to 100,000 were detected in the cytoplasmic membrane....
Ferreira, R C, Park, J T, Ferreira, L C
Six major bands corresponding to penicillin-binding proteins (PBPs) with molecular weights ranging from 43,000 to 97,000 were detected in cell envelopes of Yersinia pestis EV76 grown at 28 degrees C....
Turnover of murein in oligopeptide permease-negative Escherichia coli cells appeared to be minimal or nonexistent. In one strain in which it was possible to measure turnover during the first...
Penicillin-binding proteins of bdellovibrios.
We examined the predacious gram-negative bacterium Bdellovibrio bacteriovorous 109J and free-living strains 109J-A1 and 109J-KA1 derived therefrom for penicillin-binding proteins (PBPs). We compared...
Burman, L G, Reichler, J, Park, J T
During diaminopimelic acid starvation of Escherichia coli W7, a large fraction of the preexisting murein cross-links are opened by murein endopeptidase and the resulting uncross-linked material is...
Penicillin-binding proteins of Rhodopseudomonas sphaeroides and their membrane localization.
Shepherd, W D, Kaplan, S, Park, J T
Cytoplasmic membranes (CM) prepared from both chemotrophic and phototrophic cells of Rhodopseudomonas sphaeroides possess penicillin-binding proteins (PBPs), as demonstrated by binding of...
Furazlocillin (1 microgram/ml) and piperacillin (5 microgram/ml) bound specifically to penicillin-binding protein 3 (PBP-3) and not to the other major PBPs in intact Escherichia coli cells. The...
Schmidt, L S, Botta, G, Park, J T
Furazlocillin binds selectively to penicillin-binding protein 3 (PBP-3), prevents septation of Escherichia coli, and allows the cells to form long filaments without lysis. The effect of furazlocillin...
The specific activities of three murein hydrolases, carboxypeptidase I, carboxypeptidase II, and amidase were studied with respect to cell division in toluene-treated cells of Escherichia coli K-12....
Nishimura, Y, Suzuki, H, Hirota, Y, Park, J T
A mutant of Escherichia coli defective in penicillin-binding protein 5 activity was isolated. The mutation (pfv) was shown to be located at 14.0 min on the E. coli chromosome map. Loss of...
Genetic characterization of a filament-forming, lipoprotein-deficient mutant of Escherichia coli.
The fam-715 allele of Escherichia coli ST715, previously described as a temperature-sensitive filament former with reduced levels of lipoprotein at the nonpermissive temperature (S. V. Torti and J....
Molecular model for elongation of the murein sacculus of Escherichia coli.
Labeling experiments are presented that suggest that new (radioactive) strands of murein are initially inserted adjacent to old strands. After 8 min, new strands start to be inserted adjacent to the...
Jacobs, C, Huang, L J, Bartowsky, E, Normark, S, Park, J T
A mechanism for bacteria to monitor the status of their vital cell wall peptidoglycan is suggested by the convergence of two phenomena: peptidoglycan recycling and beta-lactamase induction. ampG and...
Oberst, L, Zhao, G, Park, J T, Brugada, R, Michael, L H, Entman, M L, ...
Hypertrophic cardiomyopathy (HCM) is a disease of sarcomeric proteins. The mechanism by which mutant sarcomeric proteins cause HCM is unknown. The leading hypothesis proposes that mutant sarcomeric...
Changes in the composition of Escherichia coli murein as it ages during exponential growth.
Escherichia coli murein was specifically labeled with [14C]diaminopimelic acid in the mutant strains W7 (dap lysA) and BUG6. Pulse-labeled heat-denatured E. coli cells were digested with 2 mg of...
Evidence for diffuse growth of the cylindrical portion of the Escherichia coli murein sacculus.
Burman, L G, Raichler, J, Park, J T
High-resolution autoradiography of thin sections of Escherichia coli cells whose murein was pulse-labeled with [3H]diaminopimelic acid after a period of diaminopimelic acid deprivation indicated that...
Interactions of Yersinia pestis penicillin-binding proteins with beta-lactam antibiotics.
Ferreira, R C, Park, J T, Camelo, D, De Almeida, D F, Ferreira, L C
The affinities of six major penicillin-binding proteins (PBPs) of Yersinia pestis EV76 to different beta-lactam antibiotics were determined. The results indicate that, similar to their counterparts...
Mengin-Lecreulx, D, Van Heijenoort, J, Park, J T
A gene, mpl, encoding UDP-N-acetylmuramate:L-alanyl-gamma-D-glutamyl-meso-diaminopimelat e ligase was recognized by its amino acid sequence homology with murC as the open reading frame yjfG present...
Hara, H, Yasuda, S, Horiuchi, K, Park, J T
We constructed a null allele of the ftsI gene encoding penicillin-binding protein 3 of Escherichia coli. It caused blockage of septation and loss of viability when expression of an extrachromosomal...
Penicillin-binding proteins in Clostridium perfringens.
Murphy, T F, Barza, M, Park, J T
The penicillin-binding proteins (PBPs) of Clostridium perfringens were studied. Six PBPs ranging in molecular weight from approximately 42,000 to 100,000 were detected in the cytoplasmic membrane....
Ferreira, R C, Park, J T, Ferreira, L C
Six major bands corresponding to penicillin-binding proteins (PBPs) with molecular weights ranging from 43,000 to 97,000 were detected in cell envelopes of Yersinia pestis EV76 grown at 28 degrees C....
Turnover of murein in oligopeptide permease-negative Escherichia coli cells appeared to be minimal or nonexistent. In one strain in which it was possible to measure turnover during the first...
Penicillin-binding proteins of bdellovibrios.
We examined the predacious gram-negative bacterium Bdellovibrio bacteriovorous 109J and free-living strains 109J-A1 and 109J-KA1 derived therefrom for penicillin-binding proteins (PBPs). We compared...
Burman, L G, Reichler, J, Park, J T
During diaminopimelic acid starvation of Escherichia coli W7, a large fraction of the preexisting murein cross-links are opened by murein endopeptidase and the resulting uncross-linked material is...
Penicillin-binding proteins of Rhodopseudomonas sphaeroides and their membrane localization.
Shepherd, W D, Kaplan, S, Park, J T
Cytoplasmic membranes (CM) prepared from both chemotrophic and phototrophic cells of Rhodopseudomonas sphaeroides possess penicillin-binding proteins (PBPs), as demonstrated by binding of...
Furazlocillin (1 microgram/ml) and piperacillin (5 microgram/ml) bound specifically to penicillin-binding protein 3 (PBP-3) and not to the other major PBPs in intact Escherichia coli cells. The...
Schmidt, L S, Botta, G, Park, J T
Furazlocillin binds selectively to penicillin-binding protein 3 (PBP-3), prevents septation of Escherichia coli, and allows the cells to form long filaments without lysis. The effect of furazlocillin...
Changes in the composition of Escherichia coli murein as it ages during exponential growth.
Escherichia coli murein was specifically labeled with [14C]diaminopimelic acid in the mutant strains W7 (dap lysA) and BUG6. Pulse-labeled heat-denatured E. coli cells were digested with 2 mg of...
Evidence for diffuse growth of the cylindrical portion of the Escherichia coli murein sacculus.
Burman, L G, Raichler, J, Park, J T
High-resolution autoradiography of thin sections of Escherichia coli cells whose murein was pulse-labeled with [3H]diaminopimelic acid after a period of diaminopimelic acid deprivation indicated that...
The specific activities of three murein hydrolases, carboxypeptidase I, carboxypeptidase II, and amidase were studied with respect to cell division in toluene-treated cells of Escherichia coli K-12....
Nishimura, Y, Suzuki, H, Hirota, Y, Park, J T
A mutant of Escherichia coli defective in penicillin-binding protein 5 activity was isolated. The mutation (pfv) was shown to be located at 14.0 min on the E. coli chromosome map. Loss of...
Genetic characterization of a filament-forming, lipoprotein-deficient mutant of Escherichia coli.
The fam-715 allele of Escherichia coli ST715, previously described as a temperature-sensitive filament former with reduced levels of lipoprotein at the nonpermissive temperature (S. V. Torti and J....
Molecular model for elongation of the murein sacculus of Escherichia coli.
Labeling experiments are presented that suggest that new (radioactive) strands of murein are initially inserted adjacent to old strands. After 8 min, new strands start to be inserted adjacent to the...
Jacobs, C, Huang, L J, Bartowsky, E, Normark, S, Park, J T
A mechanism for bacteria to monitor the status of their vital cell wall peptidoglycan is suggested by the convergence of two phenomena: peptidoglycan recycling and beta-lactamase induction. ampG and...
Oberst, L, Zhao, G, Park, J T, Brugada, R, Michael, L H, Entman, M L, ...
Hypertrophic cardiomyopathy (HCM) is a disease of sarcomeric proteins. The mechanism by which mutant sarcomeric proteins cause HCM is unknown. The leading hypothesis proposes that mutant sarcomeric...