Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Polymer Science (19)
- Otto Vogl (12)
- 02. My Life with Polymer Science (11)
- Memoirs (11)
- Photographs (10)
-
- 03. The History of the Pacific Polymer Federation (8)
- Pacific Polymer Federation (8)
- Block copolymers (2)
- 07. Selected Conferences on Polymer Science (1)
- 2 - Phloem Transport & Forisomes (1)
- 2004 (1)
- 3' phosphoinositide (1)
- Acetic acid derivative (1)
- Annealing (1)
- Binary metal oxide (1)
- Biomimetic actuators (1)
- Biomimetic smart materials (1)
- Biomolecules (1)
- Block copolymer (1)
- Brevibacerium (1)
- C2+ hydrocarbons (1)
- Carbon dioxide (1)
- Carrier concentration (1)
- Catalysis and Reaction Engineering (1)
- Catalyst for Methane Conversion (1)
- Catalyst screening (1)
- CeO2 (1)
- Cell membrane (1)
- Cellular distribution (1)
- Characterization (1)
- Publication
- File Type
Articles 1 - 30 of 42
Full-Text Articles in Entire DC Network
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
Otto Vogl
My "life story" will begin with my formative years, my childhood and student days at the University of Vienna, including my dissertation. It will be followed by my teaching appointment as an Instructor at the II. Chemical Institute of the University of Vienna. The urge to see other lands, learn other languages and scientific methods led to the Wandering Years that brought me to the United States. After three years spent as a Research Associate at the University of Michigan and at Princeton University I spent more than 13 years in an industrial career at the Du Pont Company in …
Biomimetic Actuators: Where Technology And Cell Biology Merge [Review Article], Michael Knoblauch, Winfried Peters
Biomimetic Actuators: Where Technology And Cell Biology Merge [Review Article], Michael Knoblauch, Winfried Peters
Winfried S. Peters
Surface Structure Of Alkylsilylated Hzsm-5 As Phase-Boundary Catalyst, Hadi Nur, Yun Hau Ng, Mohd Nazlan Mohd Muhid, Halimaton Hamdan
Surface Structure Of Alkylsilylated Hzsm-5 As Phase-Boundary Catalyst, Hadi Nur, Yun Hau Ng, Mohd Nazlan Mohd Muhid, Halimaton Hamdan
Yun Hau Ng
The need for cleaner environment concerns motivates the development of more efficient catalytic system. Based on this consideration, recently a novel catalyst named "Phase-boundary catalyst", a bimodal amphiphilic solid catalyst, was proposed. It was demonstrated that the catalytic system containing phase-boundary catalyst required neither stirring to make an emulsion nor addition of a co-solvent to make a homogeneous solution to drive the reaction. The driving force that has prompted this paper is to investigate the surface structure of alkylsilylated HZSM-5 as phase-boundary catalyst. Temperature Programmed Desorption (TPD) of ammonia and, 13C and 29Si MAS NMR spectroscopy were used to elucidate …
Pictures From My Life With Polymer Science: Album 01, Otto Vogl
Pictures From My Life With Polymer Science: Album 01, Otto Vogl
Otto Vogl
No abstract provided.
Ordered Network Phases In Linear Poly(Isoprene-B-Styrene-B-Ethylene Oxide) Triblock Copolymers, Thomas H. Epps Iii, Eric W. Cochran, Travis S. Bailey, Ryan S. Waletzko, Cordell M. Hardy, Frank S. Bates
Ordered Network Phases In Linear Poly(Isoprene-B-Styrene-B-Ethylene Oxide) Triblock Copolymers, Thomas H. Epps Iii, Eric W. Cochran, Travis S. Bailey, Ryan S. Waletzko, Cordell M. Hardy, Frank S. Bates
Eric W. Cochran
The equilibrium phase behavior of 43 linear poly(isoprene-b-styrene-b- ethylene oxide) (ISO) triblock copolymer melts, with molecular weights that place these materials near the order-disorder transition, is reported. Ordered phase morphologies were characterized using small-angle X-ray scattering, transmission electron microscopy, dynamic mechanical spectroscopy, and static birefringence measurements. Interpretation of these results was aided by a modeling technique that facilitates resolution of reciprocal and real-space experimental data, leading to definitive three-dimensional morphological structures. Three distinct multiply continuous network morphologies are identified across a range of compositions between 0.1 ≤ f o ≤ 0.3, situated between two-domain and three-domain lamellae, where f o …
Pictures From My Life With Polymer Science: Album 02, Otto Vogl
Pictures From My Life With Polymer Science: Album 02, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 03, Otto Vogl
Pictures From My Life With Polymer Science: Album 03, Otto Vogl
Otto Vogl
No abstract provided.
Biomolecule-Directed Assembly Of Nanoscale Building Blocks Studied Via Lattice Monte Carlo Simulation, Ting Chen, Monica H. Lamm, Sharon C. Glotzer
Biomolecule-Directed Assembly Of Nanoscale Building Blocks Studied Via Lattice Monte Carlo Simulation, Ting Chen, Monica H. Lamm, Sharon C. Glotzer
Monica H. Lamm
The self-assembly of functionalized inorganic nanoscale building blocks (NBB) was investigated using recognitive biomolecule linkers. The NBBs and linkers were studied using bond fluctuation model and algorithm on a simple cubic lattices. The loops contained in the soluble material to avoid double counting when calculating the fraction of loops. The algorithm was used to calculate additional network properties when volume fractions above the percolation threshold was simulated.
Screening Of Mgo- And Ceo2-Based Catalysts For Carbon Dioxide Oxidative Coupling Of Methane To C2+ Hydrocarbon, Istadi, Nor Aishah Saidina Amin
Screening Of Mgo- And Ceo2-Based Catalysts For Carbon Dioxide Oxidative Coupling Of Methane To C2+ Hydrocarbon, Istadi, Nor Aishah Saidina Amin
Istadi
The catalyst screening tests for carbon dioxide oxidative coupling of methane (CO2-OCM) have been investigated over ternary and binary metal oxide catalysts. The catalysts are prepared by doping MgO- and CeO2-based solids with oxides from alkali (Li2O), alkaline earth (CaO), and transition metal groups (WO3 or MnO). The presence of the peroxide (O2_2 ) active sites on the Li2O2, revealed by Raman spectroscopy, may be the key factor in the enhanced performance of some of the Li2O/MgO catalysts. The high reducibility of the CeO2 catalyst, an important factor in the CO2-OCM catalyst activity, may be enhanced by the presence of …
Network Phases In Abc Triblock Copolymers, Thomas H. Epps Iii, Eric W. Cochran, Cordell M. Hardy, Travis S. Bailey, Ryan S. Waletzko, Frank S. Bates
Network Phases In Abc Triblock Copolymers, Thomas H. Epps Iii, Eric W. Cochran, Cordell M. Hardy, Travis S. Bailey, Ryan S. Waletzko, Frank S. Bates
Eric W. Cochran
Many naturally occurring and engineered products are influenced by network structures. Collagen networks provide a scaffold for living tissue, while swollen arrays of physically cross-linked polypeptides constitute gelatin, the familiar dessert and electrophoresis medium. Although the associated mesh sizes differ by several orders of magnitude, these examples share a common feature: three-dimensional connectivity that imparts mechanical rigidity. Intercalating additional interconnected components can yield broader functions, e.g., ionic or electrical conductivity, optical band gaps, and tailored heat and mass transfer.
Shear-Induced Network-To-Network Transition In A Block Copolymer Melt, Eric W. Cochran, Frank S. Bates
Shear-Induced Network-To-Network Transition In A Block Copolymer Melt, Eric W. Cochran, Frank S. Bates
Eric W. Cochran
The tricontinuous (10, 3)c shear-induced network-to-network transition in a block copolymer melt was analyzed using small-angle x-ray scattering. Investigations show that field-induced network-to-network phase transition was unprecedented in soft condensed matter. It was found that shear transforms were used for self-assembling the soft material into a single crystal (10, 3)d network. The results show the delicate nature of block copolymers phase behavior, where candidate morphologies were spaced closely together on the free energy surface.
Pictures From My Life With Polymer Science: Album 04, Otto Vogl
Pictures From My Life With Polymer Science: Album 04, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 05, Otto Vogl
Pictures From My Life With Polymer Science: Album 05, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 06, Otto Vogl
Pictures From My Life With Polymer Science: Album 06, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 07, Otto Vogl
Pictures From My Life With Polymer Science: Album 07, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 08, Otto Vogl
Pictures From My Life With Polymer Science: Album 08, Otto Vogl
Otto Vogl
No abstract provided.
Consequences Of Block Number On The Order-Disorder Transition And Viscoelastic Properties Of Linear (Ab)N Multiblock Copolymers, Lifeng Wu, Eric W. Cochran, Timothy P. Lodge, Frank S. Bates
Consequences Of Block Number On The Order-Disorder Transition And Viscoelastic Properties Of Linear (Ab)N Multiblock Copolymers, Lifeng Wu, Eric W. Cochran, Timothy P. Lodge, Frank S. Bates
Eric W. Cochran
The effect of block number on the order-disorder transition (ODT) and viscoelastic properties were studied for linear (AB) n multiblock copolymers. A series of symmetric poly(styrene-b-isoprene) n multiblocks ((SI) n, n = 1-10) were synthesized by anionic polymerization, and their order-disorder transition temperatures (T ODT) were located using dynamic mechanical spectroscopy. As n increases, T ODT approaches an asymptotic value, consistent with random phase approximation calculations. A systematic difference between the experimental and theoretical results is attributable to the effects of fluctuations, independent of the number of blocks. Addition of up to 20 vol % of a nonselective solvent depresses …
Pictures From My Life With Polymer Science: Album 09, Otto Vogl
Pictures From My Life With Polymer Science: Album 09, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Otto Vogl
No abstract provided.
Hypothetical Thermodynamic Properties: The Boiling And Critical Temperatures Of Polyethylene And Polytetrafluoroethylene, James S. Chickos
Hypothetical Thermodynamic Properties: The Boiling And Critical Temperatures Of Polyethylene And Polytetrafluoroethylene, James S. Chickos
James Chickos
No abstract provided.
Efficient Wastewater Treatment Process For Brine Water, Carl Vavra, Adrian Bonilla-Petriciolet
Efficient Wastewater Treatment Process For Brine Water, Carl Vavra, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
The objective of this project is to develop a simple, economically feasible process for purifying salt water (brine) solutions. It involves choosing the best membrane for optimum performance, while reviewing durability, membrane service life, separation capabilities and costs. Scale-up data are collected to evaluate the commercial feasibility of this technology. The optimization of processing parameters (pressure, flow, temperature and concentration) is reviewed to maximize the performance of the membrane. Cleaning and sanitizing the membrane after use for storage and reuse will also need to be studied.
Effective Approach To Cyclic Steady State In The Catalytic Reverse-Flow Combustion Of Methane, Krzysztof Gosiewski
Effective Approach To Cyclic Steady State In The Catalytic Reverse-Flow Combustion Of Methane, Krzysztof Gosiewski
Krzysztof Gosiewski
Computer-based simulations of a reverse-flow reactor should be carried out till the attainment of the so-called cyclic steady state. Usuallythis state is achieved bythe method of direct dynamic simulations. In the paper of Unger et al. (Comput. Chem. Eng. 21 (1997) 5167.) special approaches, making use of various minimization algorithms based most often on Newton algorithms, are proposed. In the present paper one deals with a comparison and an appraisal of these methods, applied to the reverse-flow catalytic combustion of methane that occurs in coal-mine ventilation air.
Influence Of Boundary Slip On The Optimal Excitations In Thermocapillary Driven Spreading, Jm Davis, Sm Troian
Influence Of Boundary Slip On The Optimal Excitations In Thermocapillary Driven Spreading, Jm Davis, Sm Troian
Jeffrey M. Davis
Thin liquid films driven to spread on homogeneous surfaces by thermocapillarity can undergo frontal breakup and parallel rivulet formation with well-defined wavelength. Previous modal analyses have relieved the well-known divergence in stress that occurs at a moving contact line by matching the front region to a precursor film. Because the linearized disturbance operator is non-normal, a generalized, nonmodal analysis is required to probe film stability at all times. The effect of the contact line model on nonmodal stability has not been previously investigated. This work examines the influence of boundary slip on thermocapillary driven spreading using a transient stability analysis, …
Renewable Alkanes By Aqueous-Phase Reforming Of Biomass-Derived Oxygenates, George W. Huber, R. D. Cortright, J. A. Dumesic
Renewable Alkanes By Aqueous-Phase Reforming Of Biomass-Derived Oxygenates, George W. Huber, R. D. Cortright, J. A. Dumesic
George W. Huber
A clean stream of alkanes from renewable biomass resources is obtained through aqueous-phase reforming in a single reactor. Alkanes are produced from biomass-derived sorbitol through a bifunctional pathway (see scheme) that involves the dehydration of sorbitol on acid sites (SiO2/Al2O3) and hydrogenation of intermediates on a metal catalyst under a H2 atmosphere. Hydrogen is produced from sorbitol and water on the metal catalyst in the same reactor.
Effect Of Sn On The Reactivity Of Cu Surfaces, George W. Huber, A. Gokale, J. A. Dumesic, M. Mavrikakis
Effect Of Sn On The Reactivity Of Cu Surfaces, George W. Huber, A. Gokale, J. A. Dumesic, M. Mavrikakis
George W. Huber
Periodic, density functional theory (DFT-GGA) calculations, using PW91 (self-consistently) and RPBE functionals, have been employed to determine preferred binding sites, adsorbate structures, and binding energies for the adsorption of atomic (H, N, O, S, and C), molecular (NO and CO), and radical (OH) species on Cu(111) and CuSn(0001) alloy surfaces. Our results indicate the following order in the binding energies from the least to the most strongly bound: NO < CO < H < OH < N < O < S < C for Cu-terminated CuSn(0001). On Cu(111), the corresponding relative order of adsorbates from the least strongly bound to the most strongly bound is CO < NO < H < OH < N < O < S < C. On the Sn-terminated CuSn(0001) surface, CO does not adsorb and the relative order of adsorbates from the least strongly bound to the most strongly bound is NO < H < OH < N < S < O < C. For all adsorbates, the binding on Cu-terminated CuSn(0001) is stronger than on Cu(111), resulting from a combination of electronic and strain effects caused by the addition of Sn to Cu. CO dissociation is endothermic on Cu-terminated CuSn(0001) and Cu(111) surfaces, while CO oxidation is exothermic on these surfaces. OH dissociation is endothermic on all three surfaces. On all surfaces studied, thermodynamics of NO decomposition are much more favorable than those of CO and OH dissociation on the corresponding surfaces. Our microcalorimetric studies of the interaction of NO with Cu/SiO2 and Cu6Sn5/SiO2 samples give initial heats of 270 (2.80 eV) and 130 (1.35 eV) kJ/mol, respectively. These values correspond to the decomposition of NO to give adsorbed oxygen plus gaseous N2 on Cu/SiO2 and adsorbed oxygen plus gaseous N2O on the Sn-terminated phase of Cu6Sn5/SiO2.
Rational Pathway Engineering Of Type I Fatty Acid Synthase Allows The Biosynthesis Of Triacetic Acid Lactone From D-Glucose In Vivo, Wenjuan Zha, Zengyi Shao, John W. Frost, Huimin Zhao
Rational Pathway Engineering Of Type I Fatty Acid Synthase Allows The Biosynthesis Of Triacetic Acid Lactone From D-Glucose In Vivo, Wenjuan Zha, Zengyi Shao, John W. Frost, Huimin Zhao
Zengyi Shao
Metabolic pathway engineering is a powerful tool to synthesize structurally diverse and complex chemicals via genetic manipulation of multistep catalytic systems involved in cell metabolism. Here, we report the rational design of a fatty acid biosynthetic pathway, Brevibacterium ammoniagenes fatty acid synthase B (FAS-B), that allows the microbial synthesis of triacetic acid lactone (TAL) from an inexpensive feedstock, D-glucose. TAL can be chemically converted to phloroglucinol, which is a core structure for the synthesis of various high value bioactive compounds and energetic compounds such as 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). Synthesis of phloroglucinol from d-glucose using this combined biological and chemical synthesis may …
Spatial Analysis Of 3′ Phosphoinositide Signaling In Living Fibroblasts: Ii. Parameter Estimates For Individual Cells From Experiments, Ian C. Schneider, Jason M. Haugh
Spatial Analysis Of 3′ Phosphoinositide Signaling In Living Fibroblasts: Ii. Parameter Estimates For Individual Cells From Experiments, Ian C. Schneider, Jason M. Haugh
Ian C. Schneider
Fibroblast migration is directed by gradients of platelet-derived growth factor (PDGF) during wound healing. As in other chemotactic systems, it has been shown recently that localized stimulation of intracellular phosphoinositide (PI) 3-kinase activity and production of 3′ PI lipids in the plasma membrane are important events in the signaling of spatially biased motility processes. In turn, 3′ PI localization depends on the effective diffusion coefficient, D, and turnover rate constant, k, of these lipids. Here we present a systematic and direct comparison of mathematical model calculations and experimental measurements to estimate the values of the effective 3′ PI diffusion coefficient, …
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
Otto Vogl
No abstract provided.
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
Otto Vogl
The History of the Pacific Polymer Federation (PPF) describes the background and pursuit that was needed to create the PPF and bring it to a functioning organization. It includes a general description, as well as edited Pacific Polymer Newsletters and articles that have been written in Polymer News describing additional PPF activities and the Pacific Polymer Conferences.
D. Founding Of The Pacific Polymer Federation, Otto Vogl
D. Founding Of The Pacific Polymer Federation, Otto Vogl
Otto Vogl
An account of the process which led to the founding of the Pacific Polymer Federation and a copy of the Constitution of the Pacific Polymer Federation.