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Articles 1 - 30 of 49
Full-Text Articles in Chemistry
11,12-Bis(2,2-DimethylPropYl)-9,10-Dihydro-9,10-Ethenoanthracene, Joseph P. Herres, Mark A. Forman, Kraig A. Wheeler
11,12-Bis(2,2-DimethylPropYl)-9,10-Dihydro-9,10-Ethenoanthracene, Joseph P. Herres, Mark A. Forman, Kraig A. Wheeler
Kraig A. Wheeler
The title compound, C26H32, was retrieved as one of three products from the reaction of tert-butyllithium with 11,12-dimethylene-9,10-dihydroethenoanthracene and 4,5-diiodopentacyclo[4.3.0.02,4.03,8.05,7]nonane. The structure shows the expected ethenoanthracene geometry with molecules arranged via van der Waals surfaces.
54th Spsj Annual Meeting Yokohama, Japan, May 25-27, 2005, Jane C. Vogl, Hiroyuki Ohno
54th Spsj Annual Meeting Yokohama, Japan, May 25-27, 2005, Jane C. Vogl, Hiroyuki Ohno
Otto Vogl
No abstract provided.
Optimization Of Electrode Alignment For Electrochemical Detection In Capillary Electrophoresis Using A Scanning Electrochemical Microscope, David Roach, Stephanie Hooper, Mark Anderson
Optimization Of Electrode Alignment For Electrochemical Detection In Capillary Electrophoresis Using A Scanning Electrochemical Microscope, David Roach, Stephanie Hooper, Mark Anderson
Mark R. Anderson
Electrochemical detection in capillary electrophoresis requires decoupling the voltage applied to the working electrode from the separation voltage applied across the capillary. End-capillary electrochemical detection achieves this by placing the electrode just outside the ground end of the separation capillary. Obtaining adequate signal-to-noise in this arrangement requires using small inner diameter capillaries. Decreasing the inner diameter of the separation capillary, however, increases the difficulty of aligning the microelectrode with the open end of the capillary. Using scanning electrochemical microscopy (SECM), the position of the capillary opening is determined while electroactive material is continuously emerging from the end of the capillary. …
1,4-Dimethyl-1,4-Diazoniabicyclo[2.2.2]Octane Diiodide Acetonitrile Solvate, Daron E. Janzen, Paul C. Ewbank, Kent R. Mann
1,4-Dimethyl-1,4-Diazoniabicyclo[2.2.2]Octane Diiodide Acetonitrile Solvate, Daron E. Janzen, Paul C. Ewbank, Kent R. Mann
Daron E Janzen, Ph.D.
No abstract provided.
Macromolecules In Graz, Austria, December 3, 2004, Otto Vogl, Volker Ribitsch
Macromolecules In Graz, Austria, December 3, 2004, Otto Vogl, Volker Ribitsch
Otto Vogl
No abstract provided.
Application Of Correlation-Gas Chromatography To Evaluate The Vaporization Enthalpy Of A Component In An Equilibrium Mixture, Manuel Temprado, James S. Chickos
Application Of Correlation-Gas Chromatography To Evaluate The Vaporization Enthalpy Of A Component In An Equilibrium Mixture, Manuel Temprado, James S. Chickos
James Chickos
No abstract provided.
Unraveling The Mechanism Of A Potent Transcriptional Activator, Brian Brennan, Zhen Lu, Steven Rowe, Sarah Davis, Renee Metzler, Johnathan Nau, Chinmay Majmudar, Anna Mapp, Aseem Ansari
Unraveling The Mechanism Of A Potent Transcriptional Activator, Brian Brennan, Zhen Lu, Steven Rowe, Sarah Davis, Renee Metzler, Johnathan Nau, Chinmay Majmudar, Anna Mapp, Aseem Ansari
Brian B. Brennan
Despite their enormous potential as novel research tools and therapeutic agents, artificial transcription factors (ATFs) that up-regulate transcription robustly in vivo remain elusive. In investigating an ATF that does function exceptionally well in vivo, we uncovered an unexpected relationship between transcription function and a binding interaction between the activation domain and an adjacent region of the DNA binding domain. Disruption of this interaction leads to complete loss of function in vivo, even though the activation domain is still able to bind to its target in the transcriptional machinery. We propose that this interaction parallels those between natural activation domains and …
Synthesis And Characterization Of Highly Amine Functionalized Mesoporous Organosilicas By An “All-In-One” Approach, Rebecca Voss, Arne Thomas, Markus Antonietti, Geoffrey A. Ozin
Synthesis And Characterization Of Highly Amine Functionalized Mesoporous Organosilicas By An “All-In-One” Approach, Rebecca Voss, Arne Thomas, Markus Antonietti, Geoffrey A. Ozin
Rebecca Cademartiri
Mesoporous organosilicas (MOs) represent a promising class of organic–inorganic nanocomposites for a broad range of applications like catalysis, sensing, separation, or microelectronics. Their distinct feature is the presence of organic groups incorporated into the channel walls of a mesoporous structure. Here, we present a convenient “all-in-one” approach using silsesquioxane surfactant precursors for the functionalization of the channel walls with primary amine groups. The monomer is made by a hydroboration/aminolysis sequence on the base of a commercial monomer, with the template bound to the functionalization site by hydroboration and released after silica condensation and aminolysis. This combination ensures both the placement …
Polymers With Pendant Coumarins: Synthesis And Characterization Of Polystyrenes And Polymethacrylates With Pendant Coumarin Moieties, T. Christopher Corkery
Polymers With Pendant Coumarins: Synthesis And Characterization Of Polystyrenes And Polymethacrylates With Pendant Coumarin Moieties, T. Christopher Corkery
Chris Corkery
No abstract provided.
An Entry To A Chiral Dihydropyrazole Scaffold: Enantioselective [3 + 2] Cycloaddition Of Nitrile Imines, Mukund P. Sibi, Levi M. Stanley, Craig P. Jasperse
An Entry To A Chiral Dihydropyrazole Scaffold: Enantioselective [3 + 2] Cycloaddition Of Nitrile Imines, Mukund P. Sibi, Levi M. Stanley, Craig P. Jasperse
Levi M. Stanley
We have developed a versatile strategy to access dihydropyrazoles in highly enantioenriched form. Dipolar cycloaddition of electron-deficient acceptors and in situ-generated nitrile imines proceeds with high regio- and enantioselectivity using 10 mol % chiral Lewis acid catalyst. A variety of dihydropyrazoles that incorporate functionality for further manipulation have been prepared.
Chemical Manipulation Of High-Tc Ferromagnetism In Zno Diluted Magnetic Semiconductors, Kevin R. Kittilstved, D. R. Gamelin, N. S. Norberg
Chemical Manipulation Of High-Tc Ferromagnetism In Zno Diluted Magnetic Semiconductors, Kevin R. Kittilstved, D. R. Gamelin, N. S. Norberg
Kevin R. Kittilstved
We report the use of targeted p- and n-type chemical perturbations to manipulate high-TC ferromagnetism in Mn2+∶ZnO and Co2+∶ZnO in predictable and reproducible ways. We demonstrate a clear correlation between nitrogen and high-TC ferromagnetism for Mn2+∶ZnO and an inverse correlation for Co2+∶ZnO, both as predicted by recent theoretical models. These chemical perturbations reveal rich possibilities for exerting external control over high-TC spin ordering in diluted magnetic semiconductors.
11-(2,2-Dimethylpropyl)-12-{2-[12-(2,2-Dimethylpropyl)- 9,10-Dihydro-9,10-Ethenoanthracen-11-Yl]- Ethyl}-9,10-Dihydro-9,10-Ethenoanthracene, Joseph P. Herres, Mark A. Forman, Kraig A. Wheeler, Glenn P.A. Yap
11-(2,2-Dimethylpropyl)-12-{2-[12-(2,2-Dimethylpropyl)- 9,10-Dihydro-9,10-Ethenoanthracen-11-Yl]- Ethyl}-9,10-Dihydro-9,10-Ethenoanthracene, Joseph P. Herres, Mark A. Forman, Kraig A. Wheeler, Glenn P.A. Yap
Kraig A. Wheeler
Reaction of tert-butyllithium with 11,12-dimethylene-9,10- dihydro-9,10-ethanoanthracene and 4,5-diiodopentacyclo- [4.3.0.02,4.03,8.05,7]nonane gives three products, one of which crystallizes from petroleum ether as the title compound, C44H46, (I). Molecules of (I) are positioned on inversion centers (Z0 = 0.5) in the space group P21/n and lack any discernible intermolecular interactions.
The Synthesis Of Chiral Lactones From Racemic -Hydroxyamides Using The Amidase From Brevibacterium Sp. Strain R312, Thomas Goyne, Jennifer Yamaoka, Matthew Pridgeon, Kyle Miner, Stephen Taylor, Min-Ken Liao
The Synthesis Of Chiral Lactones From Racemic -Hydroxyamides Using The Amidase From Brevibacterium Sp. Strain R312, Thomas Goyne, Jennifer Yamaoka, Matthew Pridgeon, Kyle Miner, Stephen Taylor, Min-Ken Liao
Thomas Goyne
No abstract provided.
Using A Microplate Reader To Add A ‘Taste Of Research’ To An Undergraduate Biochemistry Teaching Laboratory, Thomas Goyne, Kasey Hammond, Kevin Mccusker, Jacob Riehm
Using A Microplate Reader To Add A ‘Taste Of Research’ To An Undergraduate Biochemistry Teaching Laboratory, Thomas Goyne, Kasey Hammond, Kevin Mccusker, Jacob Riehm
Thomas Goyne
No abstract provided.
Site-Specific And Synergistic Stimulation Of Methylation On The Bacterial Chemotaxis Receptor Tsr By Serine And Chew, Robert Weis
Site-Specific And Synergistic Stimulation Of Methylation On The Bacterial Chemotaxis Receptor Tsr By Serine And Chew, Robert Weis
Robert Weis
Background Specific glutamates in the methyl-accepting chemotaxis proteins (MCPs) of Escherichia coli are modified during sensory adaptation. Attractants that bind to MCPs are known to increase the rate of receptor modification, as with serine and the serine receptor (Tsr), which contributes to an increase in the steady-state (adapted) methylation level. However, MCPs form ternary complexes with two cytoplasmic signaling proteins, the kinase (CheA) and an adaptor protein (CheW), but their influences on receptor methylation are unknown. Here, the influence of CheW on the rate of Tsr methylation has been studied to identify contributions to the process of adaptation. Results Methyl …
Size-Driven Domain Reorientation In Hydrothermally Derived Lead Titanate Nanoparticles, Zhiyuan Ye, Elliot B. Slamovich, Alexander H. King
Size-Driven Domain Reorientation In Hydrothermally Derived Lead Titanate Nanoparticles, Zhiyuan Ye, Elliot B. Slamovich, Alexander H. King
Alexander H. King
High-resolution transmission electron microscopy studies of hydrothermally derived platelike lead titanate nanoparticles reveal that below a critical size of approximately 70 nm, the single ferroelectric domain polarization axis reorients from perpendicular to parallel to the plate. We suggest that during particle growth, ions in the hydrothermal processing medium compensate for the ferroelectric depolarization energy. When the processing medium is removed by washing and drying, single domain nanoparticles minimize their depolarization energy by c-axis flipping.
Modified Electrodes For Mediated Electron Transport: Detection Of Glucose And Glutamate, Alice Harper, Mark Anderson
Modified Electrodes For Mediated Electron Transport: Detection Of Glucose And Glutamate, Alice Harper, Mark Anderson
Mark R. Anderson
No abstract is currently available.
Electrode Placement Optimization For Capillary Electrophoresis Using A Scanning Electrochemical Microscope, David Roach, Mark Anderson
Electrode Placement Optimization For Capillary Electrophoresis Using A Scanning Electrochemical Microscope, David Roach, Mark Anderson
Mark R. Anderson
No abstract is currently available.
Studies Toward Understanding The Role Of Molecular Structure And Bulk Interfacial Properties, Mark Anderson
Studies Toward Understanding The Role Of Molecular Structure And Bulk Interfacial Properties, Mark Anderson
Mark R. Anderson
No abstract is available at this time.
Studies Of The Relationship Between The Structure And Properties Of Interfacial Thin Films, Mark Anderson
Studies Of The Relationship Between The Structure And Properties Of Interfacial Thin Films, Mark Anderson
Mark R. Anderson
No abstract is available at this time.
Amyloid-Β Protofibrils Differ From Amyloid-Β Aggregates Induced In Dilute Hexafluoroisopropanol In Stability And Morphology, Michael Nichols, Melissa A. Moss, Dana K. Reed, Stephanie Cratic-Mcdaniel, Jan H. Hoh, Terrone L. Rosenberry
Amyloid-Β Protofibrils Differ From Amyloid-Β Aggregates Induced In Dilute Hexafluoroisopropanol In Stability And Morphology, Michael Nichols, Melissa A. Moss, Dana K. Reed, Stephanie Cratic-Mcdaniel, Jan H. Hoh, Terrone L. Rosenberry
Michael Nichols
Measurement Of The Vaporization Enthalpy Of Complex Mixtures By Correlation-Gas Chromatography. The Vaporization Enthalpy Of Rp-1, Jp-7, And Jp-8 Rocket And Jet Fuels At T = 298.15 K, James S. Chickos, Hui Zhao
Measurement Of The Vaporization Enthalpy Of Complex Mixtures By Correlation-Gas Chromatography. The Vaporization Enthalpy Of Rp-1, Jp-7, And Jp-8 Rocket And Jet Fuels At T = 298.15 K, James S. Chickos, Hui Zhao
James Chickos
No abstract provided.
Cubane, Cuneane, And Their Carboxylates: A Calorimetric, Crystallographic, Calculational, And Conceptual Coinvestigation., Maria Victoria Roux, Juan Z. Davalos, Pilar Jimenez, Rafael Notario, Obis Castano, James S. Chickos, William Hanshaw, Hui Zhao, Nigam Rath, Joel F. Liebman, Behzad S. Farivar, A. Bashir-Hashemi
Cubane, Cuneane, And Their Carboxylates: A Calorimetric, Crystallographic, Calculational, And Conceptual Coinvestigation., Maria Victoria Roux, Juan Z. Davalos, Pilar Jimenez, Rafael Notario, Obis Castano, James S. Chickos, William Hanshaw, Hui Zhao, Nigam Rath, Joel F. Liebman, Behzad S. Farivar, A. Bashir-Hashemi
James Chickos
No abstract provided.
The Thermochemistry Of 2,4-Pentanedione Revisited: Observance Of A Nonzero Enthalpy Of Mixing Between Tautomers And Its Effects On Enthalpies Of Formation, Manuel Temprado, Maria Victoria Roux, Patamaporn Umnahanant, Hui Zhao, James S. Chickos
The Thermochemistry Of 2,4-Pentanedione Revisited: Observance Of A Nonzero Enthalpy Of Mixing Between Tautomers And Its Effects On Enthalpies Of Formation, Manuel Temprado, Maria Victoria Roux, Patamaporn Umnahanant, Hui Zhao, James S. Chickos
James Chickos
No abstract provided.
Mathematical Modeling Of The Hypothalamic-Pituitary-Adrenal System Activity, Zeljko D. Cupic
Mathematical Modeling Of The Hypothalamic-Pituitary-Adrenal System Activity, Zeljko D. Cupic
Zeljko D Cupic
No abstract provided.
Involvement Of Porin N,N-Dicyclohexylcarbodiimide-Reactive Domain In Hexokinase Binding To The Outer Mitochondrial Membrane, Philadelphia University
Involvement Of Porin N,N-Dicyclohexylcarbodiimide-Reactive Domain In Hexokinase Binding To The Outer Mitochondrial Membrane, Philadelphia University
Philadelphia University, Jordan
No abstract provided.
Modeling And Analysis Of An On Line Fms, Philadelphia University
Modeling And Analysis Of An On Line Fms, Philadelphia University
Philadelphia University, Jordan
No abstract provided.
Novel Technique To Control The Premature Infant Incubator System Using Ann, Philadelphia University
Novel Technique To Control The Premature Infant Incubator System Using Ann, Philadelphia University
Philadelphia University, Jordan
No abstract provided.
Rules Of Ownership Of Artificial Persons Of Intellectual Property Rights -Comparative Study Between Jordanian, & French Laws-, Philadelphia University
Rules Of Ownership Of Artificial Persons Of Intellectual Property Rights -Comparative Study Between Jordanian, & French Laws-, Philadelphia University
Philadelphia University, Jordan
No abstract provided.
The Role Of Knowledge Management In Enhancing The Competitiveness Of Small And Medium-Sized Enterprises (Smes), Philadelphia University
The Role Of Knowledge Management In Enhancing The Competitiveness Of Small And Medium-Sized Enterprises (Smes), Philadelphia University
Philadelphia University, Jordan
No abstract provided.