Early Growth of Massive Black Holes in Quasars (2007)
Wang, J. M., Chen, Y. M., Yan, C. S., Hu, C.
Episodic activity of quasars is driving growth of supermassive black holes (SMBHs) via accretion of baryon gas. In this Letter, we develop a simple method to analyse the duty cycle of quasars up to...
Marturunkakul, Sutiyao, Chen, Jeng I., Chen, Y. M., Kumar, J., Tripathy, Sukany K.
The relaxation of poled nonlinear optical (NLO) chromophores in polymer films was characterized by infrared reflection-absorption spectroscopy. Both a guest-host system and a photo-crosslinkable...
Tactical Oceanographic Measurement System (TOMS) Feasibility Report. (1998)
Donohue,G. L., Poehls,K. A., Chen,Y. M., Patton,R.
Transmission loss predictions were used to demonstrate the sensitivity of acoustic propagation to details of the environment. Significant modifications to predicted convergence zone location, width...
Mandal, B. K., Chen, Y. M., Jeng, R. J., Takahashi, T., Huang, J. C.
A number of corona poled guest-host systems have been investigated to understand the nature of interaction between the guest and the host molecules, the compatibility and relaxation behavior. This...
Photocross-Linked Second Order Nonlinear Optical Polymers. (1998)
Chen, Y. M., Mandal, B. K., Lee, J. Y., Miller, P., Kumar, J.
We report a novel method to obtain stable second order nonlinear optical (NLO) properties in polymeric thin films. Photocross-linking between the NLO active molecules and a photoreactive polymer is...
Takahashi, T., Mandal, B. K., Chen, Y. M., Lee, J. Y., Samuelson, L.
Polymeric thin films doped with NLO molecules are easily prepared. Recently, we have reported a number of new homo- and co- polymers in which the NLO molecules separated by flexible methylene spacer...
Takahashi, T., Miller, P., Chen, Y. M., Samuelson, L., Galotti, D. M.
Langmuir-Blodgett (LB) film formation has been investigated for polymers in which nonlinear optical (NLO) moieties are attached in the side chain of polymethacrylate (PMA) backbone. Polymer monolayer...
A New Approach to Design of Cross-Linked Second-Order Nonlinear Optical. (1998)
Mandal, B. K., Lee, J. Y., Zhu, X. F., Chen, Y. M., Prakeenvincha, E.
A new class of crosslinked second-order nonlinear optical (NLO) polymers has been developed by processing a NLO-dye and a polymer similar to conventional 'doped polymer' system. Intermolecular...
Stable Second-Order Optical Nonlinearity in Novel Photocrosslinkable Polymers. (1998)
Li, L., Zhu, X., Jeng, R. J., Chen, Y. M., Kumar, J.
Optical Characterization of novel photocrosslinkable second-order nonlinear optical (NLO) polymers are presented. These polymer systems have been designed with nonlinear optical moieties in the...
Jeng, R. J., Chen, Y. M., Mandal, B. K., Kumar, J., Tripathy, S. K.
Epoxy based material incorporating 4-(4'-nitrophenylazo) phenylamine has been synthesized and subsequently functionalized with cinnamoyl groups. These materials can be easily solution-processed into...
A New Guest-Host System: Towards Stable Second-Order Optical Nonlinearity. (1998)
Jeng, R. J., Chen, Y. M., Jain, A. K., Tripathy, S. K., Kumar, J.
A new guest-host system based on the azo dye disperse red 1 and phenyl siloxane polymer has been investigated. The second order susceptibility of the polymer cured at 220 deg C was found to be stable...
Photocrosslinkable Polymers with Stable Second Order Optical Nonlinearity. (1998)
Zhu, X. F., Chen, Y. M., Li, L., Jeng, R. J., Mandal, B. K.
Linear and nonlinear optical properties of photocrosslinkable polymers are reported. These polymers exhibit relatively stable second order nonlinearity. Electro-optic and second harmonic generation...
Photoprocessable Second Order Nonlinear Optical Polymers. (1998)
Kumar, J., Tripathy, S. K., Mandal, B. K., Chen, Y. M., Jeng, R. J.
Dye-doped polymers and polymers with covalently attached nonlinear-optical (NLO) moieties have demonstrated that large second-order susceptibilities in polymers are achievable. For practical...
Novel Crosslinked Guest-Host System with Stable Second Order Nonlinearity. (1998)
Jeng, R., Chen, Y. M., Kumar, J., Tripathy, S.
An epoxy based nonlinear optical (NLO) polymeric material incorporating 4-(4'-nitrophenylazo) phenylamine has been synthesized and subsequently functionalized with acryloyl groups. A glass transition...
Efficient Cerenkov Second-Harmonic Generation in Crosslinked Poled Polymer Waveguides. (1998)
Zhu, X. F., Chen, Y. M., Kamath, M., Jeng, R. J., Kumar, J.
This paper presents frequency doubling results by Cerenkov radiation from stable poled polymer slab waveguides. For a 1064 nm Nd-YAG laser, the harmonic wavelength is away from the strong absorption...
Chen, J. I., Marturunkakul, S., Chen, Y. M., Kumar, J., Tripathy, S. K.
The relaxation of poled nonlinear optical (NLO) chromophores in polymer films was characterized by infrared reflection-absorption spectroscopy. Both a guest-host system and a photocrosslinkable...
Wear Behaviour of Partially Stabilized Zirconia at High Sliding Speed. (1998)
Chen, Y. M., Rigaut, B., Armanet, F.
The wear behavior of three partially stabilized zirconias (PSZs) against steel was investigated on a pin-on-disk wear machine under dry conditions (from 5 m/s to 50 m/s, at 5 N load). In order to...
Friction and Wear of Alumina Ceramics at High Sliding Speed. (1998)
Chen, Y. M., Rigaut, B., Armanet, F.
The influence of the sliding speed (from 5 to 50 m/s) on friction properties of two Al2O3/steel sliding couples was studied by pin-on-disk wear testing. For one Al2O3 pin on a steel disk, a...
Poled Ordered Phenoxy-Silicon Polymer as Second Order Nonlinear Optical Materials. (1996)
Jeng, R. J., Chen, Y. M., Chen, J. I., Kumar, J., Tripathy, S. K.
Copyright: American Copyright: American
Abstracts of scientific presentations (1986)
Clark, J., Munitz, H. A., Benjamin, S. B., Frager, J., Janower, M. L., Wolf, E. L., ...
Peer Reviewed
Chen, Y M, Okayama, A, Lee, T H, Tachibana, N, Mueller, N, Essex, M
The tax gene product (Tax protein) of human T-cell leukemia virus type I (HTLV-I) is a specific transcriptional activator of the viral long terminal repeat sequence and is essential for the...
Jinn, T. L., Chen, Y. M., Lin, C. Y.
Examination of an ammonium sulfate-enriched fraction (70-100% saturation) of heat-shock proteins (HSPs) by nondenaturing polyacrylamide gel electrophoresis revealed the presence of a high molecular...
Jinn, T. L., Chang, PFL., Chen, Y. M., Key, J. L., Lin, C. Y.
A monospecific polyclonal antibody was used to study the tissue-type specificity and intracellular localization of class I low-molecular-weight (LMW) heat-shock proteins (HSPs) in soybean (Glycine...
Lucher, L A, Chen, Y M, Walker, J B
Dialyzed extracts of the gentamicin producer Micromonospora purpurea catalyze reactions which represent transaminations proposed for 2-deoxystreptamine biosynthesis. To determine whether these...
Hidalgo, E, Chen, Y M, Lin, E C, Aguilar, J
The gene ald, encoding aldehyde dehydrogenase, has been cloned from a genomic library of Escherichia coli K-12 constructed with plasmid pBR322 by complementing an aldehyde dehydrogenase-deficient...
L-1,2-Propanediol is an irretrievable end product of L-fucose fermentation by Escherichia coli. Selection for increased aerobic growth rate on propanediol results in the escalation of basal synthesis...
Mutant analysis revealed that complete utilization of L-fucose and L-rhamnose by Escherichia coli requires the activity of a common NAD-linked aldehyde dehydrogenase which converts L-lactaldehyde to...
Cross-induction of the L-fucose system by L-rhamnose in Escherichia coli.
Chen, Y M, Tobin, J F, Zhu, Y, Schleif, R F, Lin, E C
Dissimilation of L-fucose as a carbon and energy source by Escherichia coli involves a permease, an isomerase, a kinase, and an aldolase encoded by the fuc regulon at minute 60.2. Utilization of...
Regulation of the adhE gene, which encodes ethanol dehydrogenase in Escherichia coli.
The respiratory control of adhE, which encodes ethanol (alcohol) dehydrogenase in Escherichia coli, was examined at the transcriptional level by using various phi (adhE'-lacZ) adhE+ merodiploid...
During anaerobic growth on L-fucose, Escherichia coli excretes L-1,2-propanediol formed by an inducible NAD-linked oxidoreductase. The activity of this enzyme is highly induced by L-fucose only...
Anaerobic growth of Escherichia coli on L-fucose or L-rhamnose as the sole source of carbon and energy depends on the regeneration of NAD from NADH by disposing the intermediate L-lactaldehyde as...
Clustering of genes for L-fucose dissimilation by Escherichia coli.
Chakrabarti, T, Chen, Y M, Lin, E C
Aerobic and anaerobic L-fucose utilization by Escherichia coli involves an inducible trunk pathway mediated by a permease, an isomerase, a kinase, and an aldolase. Tn5 insertion mutants of a parental...
Constitutive activation of L-fucose genes by an unlinked mutation in Escherichia coli.
Chen, Y M, Chakrabarti, T, Lin, E C
Wild-type Escherichia coli cannot grow on L-1,2-propanediol; mutants that can do so have increased basal activity of an NAD-linked L-1,2-propanediol oxidoreductase. This enzyme belongs to the...
Chen, Y M, Backman, K, Magasanik, B
DNA was prepared from a strain of Escherichia coli bearing a mutation which confers the GlnC phenotype (inability to reduce the expression of glnA and other nitrogen-regulated operons in response to...
Factors which influence levels of selected organisms in saliva of older individuals.
Loesche, W J, Schork, A, Terpenning, M S, Chen, Y M, Stoll, J
The most commonly measured bacterial parameters in saliva are the levels of the mutans group streptococci and lactobacilli, which have diagnostic implications for the incidence of dental decay....
Isolation and characterization of simian T-cell leukemia virus type II from New World monkeys.
Chen, Y M, Jang, Y J, Kanki, P J, Yu, Q C, Wang, J J, Montali, R J, ...
Since the description of human T-cell leukemia virus type I (HTLV-I) and its simian counterpart, simian T-cell leukemia virus type I (STLV-I), the possible existence of other related simian...
Chen, Y M, Lee, T H, Samuel, K P, Okayama, A, Tachibana, N, Miyoshi, I, ...
The primary protein product of the human T-cell leukemia virus type 1 (HTLV-1) env gene, gp61, is cleaved to produce both the exterior (gp46) and the transmembrane (gp21) portions of the HTLV-1...
Matsuda, Z, Chou, M J, Matsuda, M, Huang, J H, Chen, Y M, Redfield, R, ...
Eight coding regions designated gag, pol, env, sor, R, tat, art/trs, and 3' orf have been identified in the genome of the human immunodeficiency virus type 1 (HIV-1). Several other open reading...
Heat shock proteins of higher plants
Key, Joe L., Lin, C. Y., Chen, Y. M.
The pattern of protein synthesis changes rapidly and dramatically when the growth temperature of soybean seedling tissue is increased from 28°C (normal) to about 40°C (heat shock). The synthesis of...
Physical and genetic characterization of the glnA--glnG region of the Escherichia coli chromosome.
Backman, K, Chen, Y M, Magasanik, B
We have cloned and characterized a fragment of the Escherichia coli chromosome spanning glnA, the structural gene for glutamine synthetase (L-glutamate:ammonia ligase (ADP-forming), EC 6.3.1.2]. The...
Enhancement of soybean RNA polymerase I by auxin.
Guilfoyle, T J, Lin, C Y, Chen, Y M, Nagao, R T, Key, J L
When etiolated soybean seedlings are treated with the synthetic auxin, 2,4-dichlorophenoxy-acetic acid, cells of the mature hypocotyl become swollen and proliferate abnormally. This abnormal growth...
Molecular characterization of Oryza sativa 16.9 kDa heat shock protein.
Young, L S, Yeh, C H, Chen, Y M, Lin, C Y
A rice class I low-molecular-mass heat shock protein (LMM HSP) Oshsp 16.9 was overexpressed in Escherichia coli. Oligomerized complexes of Oshsp16.9 were harvested and electron microscopic...
Mathematical modeling of BTX: biotransformation and transport in the subsurface.
A two-dimensional compositional model is presented; this model describes the transport and biotransformation of organic contaminants in a variably saturated subsurface environment. Modeled processes...
Chen, Y. M., Wang, Q. J., Hu, H. S., Yu, P. C., Zhu, J., Drewes, G., ...
The PAR-3/PAR-6/atypical PKC (aPKC) complex is required for axon–dendrite specification of hippocampal neurons. However, the downstream effectors of this complex are not well defined. In this...
Chen, Y M, Okayama, A, Lee, T H, Tachibana, N, Mueller, N, Essex, M
The tax gene product (Tax protein) of human T-cell leukemia virus type I (HTLV-I) is a specific transcriptional activator of the viral long terminal repeat sequence and is essential for the...
Jinn, T. L., Chen, Y. M., Lin, C. Y.
Examination of an ammonium sulfate-enriched fraction (70-100% saturation) of heat-shock proteins (HSPs) by nondenaturing polyacrylamide gel electrophoresis revealed the presence of a high molecular...
Jinn, T. L., Chang, PFL., Chen, Y. M., Key, J. L., Lin, C. Y.
A monospecific polyclonal antibody was used to study the tissue-type specificity and intracellular localization of class I low-molecular-weight (LMW) heat-shock proteins (HSPs) in soybean (Glycine...
Lucher, L A, Chen, Y M, Walker, J B
Dialyzed extracts of the gentamicin producer Micromonospora purpurea catalyze reactions which represent transaminations proposed for 2-deoxystreptamine biosynthesis. To determine whether these...
Hidalgo, E, Chen, Y M, Lin, E C, Aguilar, J
The gene ald, encoding aldehyde dehydrogenase, has been cloned from a genomic library of Escherichia coli K-12 constructed with plasmid pBR322 by complementing an aldehyde dehydrogenase-deficient...
L-1,2-Propanediol is an irretrievable end product of L-fucose fermentation by Escherichia coli. Selection for increased aerobic growth rate on propanediol results in the escalation of basal synthesis...
Mutant analysis revealed that complete utilization of L-fucose and L-rhamnose by Escherichia coli requires the activity of a common NAD-linked aldehyde dehydrogenase which converts L-lactaldehyde to...
Cross-induction of the L-fucose system by L-rhamnose in Escherichia coli.
Chen, Y M, Tobin, J F, Zhu, Y, Schleif, R F, Lin, E C
Dissimilation of L-fucose as a carbon and energy source by Escherichia coli involves a permease, an isomerase, a kinase, and an aldolase encoded by the fuc regulon at minute 60.2. Utilization of...
Regulation of the adhE gene, which encodes ethanol dehydrogenase in Escherichia coli.
The respiratory control of adhE, which encodes ethanol (alcohol) dehydrogenase in Escherichia coli, was examined at the transcriptional level by using various phi (adhE'-lacZ) adhE+ merodiploid...
During anaerobic growth on L-fucose, Escherichia coli excretes L-1,2-propanediol formed by an inducible NAD-linked oxidoreductase. The activity of this enzyme is highly induced by L-fucose only...
Anaerobic growth of Escherichia coli on L-fucose or L-rhamnose as the sole source of carbon and energy depends on the regeneration of NAD from NADH by disposing the intermediate L-lactaldehyde as...
Clustering of genes for L-fucose dissimilation by Escherichia coli.
Chakrabarti, T, Chen, Y M, Lin, E C
Aerobic and anaerobic L-fucose utilization by Escherichia coli involves an inducible trunk pathway mediated by a permease, an isomerase, a kinase, and an aldolase. Tn5 insertion mutants of a parental...
Constitutive activation of L-fucose genes by an unlinked mutation in Escherichia coli.
Chen, Y M, Chakrabarti, T, Lin, E C
Wild-type Escherichia coli cannot grow on L-1,2-propanediol; mutants that can do so have increased basal activity of an NAD-linked L-1,2-propanediol oxidoreductase. This enzyme belongs to the...
Chen, Y M, Backman, K, Magasanik, B
DNA was prepared from a strain of Escherichia coli bearing a mutation which confers the GlnC phenotype (inability to reduce the expression of glnA and other nitrogen-regulated operons in response to...
Factors which influence levels of selected organisms in saliva of older individuals.
Loesche, W J, Schork, A, Terpenning, M S, Chen, Y M, Stoll, J
The most commonly measured bacterial parameters in saliva are the levels of the mutans group streptococci and lactobacilli, which have diagnostic implications for the incidence of dental decay....
Isolation and characterization of simian T-cell leukemia virus type II from New World monkeys.
Chen, Y M, Jang, Y J, Kanki, P J, Yu, Q C, Wang, J J, Montali, R J, ...
Since the description of human T-cell leukemia virus type I (HTLV-I) and its simian counterpart, simian T-cell leukemia virus type I (STLV-I), the possible existence of other related simian...
Chen, Y M, Lee, T H, Samuel, K P, Okayama, A, Tachibana, N, Miyoshi, I, ...
The primary protein product of the human T-cell leukemia virus type 1 (HTLV-1) env gene, gp61, is cleaved to produce both the exterior (gp46) and the transmembrane (gp21) portions of the HTLV-1...
Matsuda, Z, Chou, M J, Matsuda, M, Huang, J H, Chen, Y M, Redfield, R, ...
Eight coding regions designated gag, pol, env, sor, R, tat, art/trs, and 3' orf have been identified in the genome of the human immunodeficiency virus type 1 (HIV-1). Several other open reading...
Heat shock proteins of higher plants
Key, Joe L., Lin, C. Y., Chen, Y. M.
The pattern of protein synthesis changes rapidly and dramatically when the growth temperature of soybean seedling tissue is increased from 28°C (normal) to about 40°C (heat shock). The synthesis of...
Physical and genetic characterization of the glnA--glnG region of the Escherichia coli chromosome.
Backman, K, Chen, Y M, Magasanik, B
We have cloned and characterized a fragment of the Escherichia coli chromosome spanning glnA, the structural gene for glutamine synthetase (L-glutamate:ammonia ligase (ADP-forming), EC 6.3.1.2]. The...
Enhancement of soybean RNA polymerase I by auxin.
Guilfoyle, T J, Lin, C Y, Chen, Y M, Nagao, R T, Key, J L
When etiolated soybean seedlings are treated with the synthetic auxin, 2,4-dichlorophenoxy-acetic acid, cells of the mature hypocotyl become swollen and proliferate abnormally. This abnormal growth...
Molecular characterization of Oryza sativa 16.9 kDa heat shock protein.
Young, L S, Yeh, C H, Chen, Y M, Lin, C Y
A rice class I low-molecular-mass heat shock protein (LMM HSP) Oshsp 16.9 was overexpressed in Escherichia coli. Oligomerized complexes of Oshsp16.9 were harvested and electron microscopic...
Chen, Y. M., Wang, Q. J., Hu, H. S., Yu, P. C., Zhu, J., Drewes, G., ...
The PAR-3/PAR-6/atypical PKC (aPKC) complex is required for axon–dendrite specification of hippocampal neurons. However, the downstream effectors of this complex are not well defined. In this...
Mathematical modeling of BTX: biotransformation and transport in the subsurface.
A two-dimensional compositional model is presented; this model describes the transport and biotransformation of organic contaminants in a variably saturated subsurface environment. Modeled processes...