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Transgenic Dairy Cattle: Genetic Engineering On A Large Scale, R. J. Wall, D. E. Kerr, K. R. Bondioli Jan 1997

Transgenic Dairy Cattle: Genetic Engineering On A Large Scale, R. J. Wall, D. E. Kerr, K. R. Bondioli

Faculty Publications

Amid the explosion of fundamental knowledge generated from transgenic animal models, a small group of scientists has been producing transgenic livestock with goals of improving animal production efficiency and generating new products. The ability to modify mammary-specific genes provides an opportunity to pursue several distinctly different avenues of research. The objective of the emerging gene "pharming" industry is to produce pharmaceuticals for treat-ing human diseases. It is argued that mammary glands are an ideal site for producing complex bioactive proteins that can be cost effectively harvested and purified. Consequently, during the past decade, approximately a dozen companies have been created …

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Whose Team Are You On? My Team Or My Team?: The Nlra's Section 8(A)(2) And The Team Act, Rafael Gely Jan 1997

Whose Team Are You On? My Team Or My Team?: The Nlra's Section 8(A)(2) And The Team Act, Rafael Gely

Faculty Publications

This article analyzes employee participatory programs from the internal labor markets perspective. Internal Labor Markets (“ILM”) refer to the explicit or implicit agreements between employer and employees incorporating rules governing wages, working hours, promotion opportunities and grievance procedures. In order to function properly, ILMs require employees to learn skills that are valuable to the contracting firm, but are of much lesser value elsewhere. Employees agree to acquire such “firm-specific” skills and employers agree to subsidize the training needed to obtain these new skills. It is a mutually beneficial arrangement: employers expect to observe increases in productivity and efficiency and employees …

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The Zeus Leading Proton Spectrometer And Its Use In The Measurement Of Elastic Ρ0 Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti Jan 1997

The Zeus Leading Proton Spectrometer And Its Use In The Measurement Of Elastic Ρ0 Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti

Faculty Publications

The differential cross section dσ/dt for elastic ρ0 photoproduction, γp → ρ0ρ (ρ0 → π+π-), has been measured in ep interactions at HERA. The squared four-momentum exchanged at the proton vertex, t, has been determined directly by measuring the momentum of the scattered proton using the ZEUS Leading Proton Spectrometer (LPS), a large scale system of silicon micro-strip detectors operating close to the HERA proton beam. The LPS allows the measurement of the momentum of high energy protons scattered at small angles with accuracies of 0.4% for the longitudinal momentum and 5 MeV for the transverse momentum. Photoproduction of ρ0 …

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Search For Lepton Flavor Violation In Ep Collisions At 300 Gev Center Of Mass Energy, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam Jan 1997

Search For Lepton Flavor Violation In Ep Collisions At 300 Gev Center Of Mass Energy, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. R. Okrasiński, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, M. C.K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam

Faculty Publications

Using the ZEUS detector at the HERA electron-proton collider, we have searched for lepton flavor violation in ep collisions at a center-of-mass energy (√s) of 300 GeV. Events of the type e + p → ℓ + X with a final-state lepton of high transverse momentum, ℓ = μ or τ, were sought. No evidence was found for lepton flavor violation in the combined 1993 and 1994 data samples, for which the integrated luminosities were 0.84 pb-1 for e-p collisions and 2.94 pb-1 for e+p collisions. Limits on coupling vs. mass are provided for leptoquarks and R-parity violating squarks. For …

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Generation Of Attosecond Pulses In Macroscopic Media, Philippe Antoine, Dejan B. Milošević, Anne L’Huillier, Mette B. Gaarde, Pascal Salières, Maciej Lewenstein Jan 1997

Generation Of Attosecond Pulses In Macroscopic Media, Philippe Antoine, Dejan B. Milošević, Anne L’Huillier, Mette B. Gaarde, Pascal Salières, Maciej Lewenstein

Faculty Publications

We describe theoretically the generation of ultrashort (subfemtosecond) pulses using high-order harmonics of a laser pulse with a time-dependent degree of ellipticity. The single-atom response is calculated by using a low-frequency strong-field approximation. Propagation effects are taken into account using a method going beyond the slowly varying envelope approximation. Propagation modifies significantly the results obtained in the single-atom response and, in certain conditions, makes the generation of one attosecond pulse possible. We discuss prospects for the observation of these ultrashort pulses. © 1997 The American Physical Society.

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Mass Transfer Cycles In Close Binaries With Evolved Companions, A. R. King, J. Frank, U. Kolb, H. Ritter Jan 1997

Mass Transfer Cycles In Close Binaries With Evolved Companions, A. R. King, J. Frank, U. Kolb, H. Ritter

Faculty Publications

We give a global analysis of mass transfer variations in low-mass X-ray binaries and cataclysmic variables whose evolution is driven by the nuclear expansion of the secondary star. We show that limit cycles caused by irradiation of the secondary by the accreting primary are possible in a large class of these binaries. In the high state, the companion transfers a large fraction of its envelope mass on a thermal timescale. In most cases this implies super-Eddington transfer rates and would thus probably lead to common-envelope evolution and the formation of an ultrashort-period binary. Observed systems with (sub)giant secondaries stabilize themselves …

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Transients Among Binaries With Evolved Low-Mass Companions, A. R. King, J. Frank, U. Kolb, H. Ritter Jan 1997

Transients Among Binaries With Evolved Low-Mass Companions, A. R. King, J. Frank, U. Kolb, H. Ritter

Faculty Publications

We show that stable disk accretion should be very rare among low-mass X-ray binaries (LMXBs) and cataclysmic variables whose evolution is driven by the nuclear expansion of the secondary star on the first giant branch. Stable accretion is confined to neutron star systems in which the secondary is still relatively massive and to some supersoft white dwarf accretors. All other systems, including all black hole systems, appear as soft X-ray transients or dwarf novae. All long-period neutron star systems become transient well before most of the envelope mass is transferred and remain transient until envelope exhaustion. This complicates attempts to …

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Wards Cove Packing Or Not Wards Cove Packing? That Is Not The Question: Some Thoughts On Impact Analysis Under The Age Discrimination In Employment Act, Mack Player Jan 1997

Wards Cove Packing Or Not Wards Cove Packing? That Is Not The Question: Some Thoughts On Impact Analysis Under The Age Discrimination In Employment Act, Mack Player

Faculty Publications

No abstract provided.

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How Will We Regulate Genetic Enhancement, Maxwell J. Mehlman Jan 1997

How Will We Regulate Genetic Enhancement, Maxwell J. Mehlman

Faculty Publications

Genetic enhancement technologies present difficult and novel regulatory issues, including the problem of measuring and comparing risks and benefits and dealing with the impact of these technologies on social values. This Article describes and evaluates the potential approaches that may be taken to regulate these technologies. The author concludes that a variety of approaches will be necessary, involving self-regulation, government restrictions on access and use, licensing, and a national lottery.

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Model-Driven Simulation Of World-Wide-Web Cache Policies, Ying Shi, Edward Watson, Ye Sho Chen Jan 1997

Model-Driven Simulation Of World-Wide-Web Cache Policies, Ying Shi, Edward Watson, Ye Sho Chen

Faculty Publications

The World Wide Web (WWW) has experienced a dramatic increase in popularity since 1993. Many reports indicate that its growth will continue at an exponential rate. This growth has created a tremendous increase in network loads and user response times. The complexity and diversity of many WWW documents (e.g., texts, images, video, audio, etc.) and the diversity of user requested WWW information require sophisticated WWW cache management strategies. Several popular WWW cache algorithms perform rather poorly and lack mathematical or empirical foundations. As a result, WWW system administrators and browser users are forced to arbitrarily define certain important cache parameters. …

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Restating Capitalization Standards And Rules: The Case For "Rough Justice" Regulations (Part One), John W. Lee, Eldridge Blanton, Veena Luthra, Glenn Walberg, Darryl Whitesell Jan 1997

Restating Capitalization Standards And Rules: The Case For "Rough Justice" Regulations (Part One), John W. Lee, Eldridge Blanton, Veena Luthra, Glenn Walberg, Darryl Whitesell

Faculty Publications

No abstract provided.

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Nine Guidelines And A Reflection On Internet Copyright Practice, Howard C. Anawalt Jan 1997

Nine Guidelines And A Reflection On Internet Copyright Practice, Howard C. Anawalt

Faculty Publications

No abstract provided.

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The Intellectual Property Renaissance In Cyberspace: Why Copyright Law Could Be Unimportant On The Internet, Eric Goldman Jan 1997

The Intellectual Property Renaissance In Cyberspace: Why Copyright Law Could Be Unimportant On The Internet, Eric Goldman

Faculty Publications

No abstract provided.

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How To Encourage Global Electronic Commerce: The Case For Private Currencies On The Internet, Kerry L. Macintosh Jan 1997

How To Encourage Global Electronic Commerce: The Case For Private Currencies On The Internet, Kerry L. Macintosh

Faculty Publications

No abstract provided.

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"Sale" Of Law And Forum And The Widening Gulf Between "Consumer" And "Nonconsumer" Contracts In The Ucc, William J. Woodward Jr. Jan 1997

"Sale" Of Law And Forum And The Widening Gulf Between "Consumer" And "Nonconsumer" Contracts In The Ucc, William J. Woodward Jr.

Faculty Publications

No abstract provided.

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Ellipsometric And Raman Spectroscopic Study Of Thermally Formed Films On Titanium, E. Hristova, Lj. Arsov, Branko N. Popov, Ralph E. White Jan 1997

Ellipsometric And Raman Spectroscopic Study Of Thermally Formed Films On Titanium, E. Hristova, Lj. Arsov, Branko N. Popov, Ralph E. White

Faculty Publications

Thermal films on titanium surfaces were formed by heating titanium samples in air at atmospheric pressure. The optical constants, thickness, and structure of the formed films at various temperatures and times of heating were investigated by ellipsometry and Raman spectroscopy. The complex index of refraction and the thickness of generated films were determined by comparing the experimental loci and obtained by ellipsometric measurements with theoretical computed vs. curves. It was found that the thickness in homogeneity and porosity of formed films increase with increasing temperature and the duration of the thermal treatment. Beyond a certain critical temperature, the appearance of …

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The Effects Of Organic Compounds On Inhibition Of Hydrogen Permeation Through A Mild Steel Membrane, H. A. Duarte, D. M. See, Branko N. Popov, Ralph E. White Jan 1997

The Effects Of Organic Compounds On Inhibition Of Hydrogen Permeation Through A Mild Steel Membrane, H. A. Duarte, D. M. See, Branko N. Popov, Ralph E. White

Faculty Publications

The effectiveness of 5-(4-pyridyl)-2,7-nonadiene, and 1 phenyl-2-propyn-ol (PP) on inhibition of the hydrogen evolution reaction on a 1010 steel membrane and on the degree of hydrogen ingress into the membrane was determined. Hydrogen evolution rates and permeation currents were monitored as a function of time at different applied potentials. In the presence of 0.5 g/liter PP in the electrolyte, the hydrogen discharge and permeation current density were inhibited by 98 and95%, respectively.

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Optimization Of Out-Of-Core Computations Using Chain Vectors, M. Kandemir, J. Ramanujam, A. Choudhary Jan 1997

Optimization Of Out-Of-Core Computations Using Chain Vectors, M. Kandemir, J. Ramanujam, A. Choudhary

Faculty Publications

Over the last decade, processor speed has become significantly higher than memory and disk speeds. Therefore, exploiting the memory hierarchy has emerged as a key problem in parallel computing. An out-of-core computation is one which operates on disk-resident data. This paper uses the concept of chain vectors for tiling out-of-core codes. The theory of chain vectors is discussed and extended, and their relation to reuse vectors is established. Then, chain vectors are used to optimize the tile size, shape, allocation and scheduling for out-of-core codes.

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Mass/Heat Transfer In A Ribbed Blade Coolant Passage With Cylindrical Vortex Generators: The Effect Of Generator-Rib Spacing, Richard G. Hibbs, Sumanta Acharyal, Yi Chen, Dimitris E. Nikitopoulos Jan 1997

Mass/Heat Transfer In A Ribbed Blade Coolant Passage With Cylindrical Vortex Generators: The Effect Of Generator-Rib Spacing, Richard G. Hibbs, Sumanta Acharyal, Yi Chen, Dimitris E. Nikitopoulos

Faculty Publications

The effect of vortex-generators on the heat transfer from the internally ribbed passages of a turbine blade coolant channel is studied experimentally using a mass-transfer technique. Cylindrical vortexgenerators placed directly above the ribs have been used in this study. Results are reported on the effect of the spacing between the vortex-generator and the ribs. Detailed distributions of the Sherwood number contours and the centerline Sherwood number distributions are presented. Three generator-ribspacing/ rib-height (s/e) values of 0.55, 1, and 1.5 are considered. It is shown that at small generator-rib spacings (s/e=0.55), the two act as a single element, and lead to …

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Internet-Based Agents: Applications And Infrastructure, Munindar P. Singh, Michael N. Huhns Jan 1997

Internet-Based Agents: Applications And Infrastructure, Munindar P. Singh, Michael N. Huhns

Faculty Publications

Software agents are mitigating the complexity of modern information systems—technically by providing a locus for managing information subsets, and psychologically by providing an abstraction for human interaction with them.

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Conversational Agents, Michael N. Huhns, Munindar P. Singh Jan 1997

Conversational Agents, Michael N. Huhns, Munindar P. Singh

Faculty Publications

When you build or buy an agent for the Web, you want it to perform as well as possible. Increasingly, this means your agent should take advantage not only of the Web's information resources, but also of all the other agents that might be operating there.

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Agents Are Everywhere!, Michael N. Huhns, Munindar P. Singh Jan 1997

Agents Are Everywhere!, Michael N. Huhns, Munindar P. Singh

Faculty Publications

A decade ago this claim would have evoked images from the Cold War—and probably gotten this column classified! Today, it describes one of the hottest technical areas on the Internet.

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Chemical Stability Study Of Bace0.9Nd0.1O3−Α High Temperature Proton-Conducting Ceramic, Fanglin Chen, O. Toft Sorensen, Guangyao Meng, Dingkum Peng Jan 1997

Chemical Stability Study Of Bace0.9Nd0.1O3−Α High Temperature Proton-Conducting Ceramic, Fanglin Chen, O. Toft Sorensen, Guangyao Meng, Dingkum Peng

Faculty Publications

BaCe0.9Nd0.1O3−a (BCN) ceramic is known to be an excellent high-temperature proton conductor and is a candidate electrolyte for use in solid oxide fuel cells, hydrogen or steam sensors and steam electrolysers. In this work, the chemical stability of BCN was investigated systematically by combining XRD and DTA–TG techniques to study its processing compatibility and its feasibility in potential applications. It was found that above 1200 °C, BCN reacted with alumina or zirconia, leading to the loss of barium and an excess of cerium. In cold water, both sintered BCN disks and powder samples had very …

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Preparation Of Nd-Doped Baceo3 Proton-Conducting Ceramics By Homogeneous Oxalate Coprecipitation, Fanglin Chen, Ping Wang, O. Toft Sorensen, Guangyao Meng, Dingkum Peng Jan 1997

Preparation Of Nd-Doped Baceo3 Proton-Conducting Ceramics By Homogeneous Oxalate Coprecipitation, Fanglin Chen, Ping Wang, O. Toft Sorensen, Guangyao Meng, Dingkum Peng

Faculty Publications

Nd-doped BaCeO3 have been obtained from homogeneous coprecipitated oxalates when calcined at temperatures T≥1000 °C. Ball-milling of the calcined powders well disperses the agglomerates and consequently has a beneficial effect in the densification process. The calcination temperature has a major influence on the sintering process and powders calcined at 1100 °C possess good sinterabilities. The pressure applied to press the green pellets has no apparent influence on the sintered density at sintering temperatures of T≥1400 °C. By controlling the processing variables it was possible to obtain near fully dense Nd-doped BaCeO3 ceramics with homogeneous microstructure at a sintering …

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Governing Equations For Transport In Porous Electrodes, Pauline De Vidts, Ralph E. White Jan 1997

Governing Equations For Transport In Porous Electrodes, Pauline De Vidts, Ralph E. White

Faculty Publications

No abstract provided.

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Mathematical Modeling Of Proton‐Exchange‐Membrane Fuel‐Cell Stacks, Dhanwa Thirumalai, Ralph E. White Jan 1997

Mathematical Modeling Of Proton‐Exchange‐Membrane Fuel‐Cell Stacks, Dhanwa Thirumalai, Ralph E. White

Faculty Publications

No abstract provided.

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Electrowinning Of Nonnoble Metals With Simultaneous Hydrogen Evolution At Flow-Through Porous Electrodes Iii. Time Effects, Mahmoud M. Saleh, John W Weidner, Bahgat E. El-Anadouli, Badr G. Ateya Jan 1997

Electrowinning Of Nonnoble Metals With Simultaneous Hydrogen Evolution At Flow-Through Porous Electrodes Iii. Time Effects, Mahmoud M. Saleh, John W Weidner, Bahgat E. El-Anadouli, Badr G. Ateya

Faculty Publications

The electrowinning of zinc from a recirculating alkaline zincate solution at a flow-through porous electrode was investigated. Experimental results were obtained to test the predictions of a mathematical model. The effects of electrolyte flow rate, cell current, and electrode thickness on the concentration-time relations and coulombic efficiency-time relations were studied. The experimental results show that the highest recovery rate was obtained at both high flow rates and cell currents. There is, however, a practical limit for increasing both the cell current and the electrolyte flow rate. Reasonable agreement between the model predictions and experimental results was obtained. A case study …

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An Electrochemical Route For Making Porous Nickel Oxide Electrochemical Capacitors, Venkat Srinivasan, John W. Weidner Jan 1997

An Electrochemical Route For Making Porous Nickel Oxide Electrochemical Capacitors, Venkat Srinivasan, John W. Weidner

Faculty Publications

Porous nickel oxide films were prepared by electrochemically precipitating nickel hydroxide and heating the hydroxide in air at 300°C. The resulting nickel oxide films behave as an electrochemical capacitor with a specific capacitance of 59 F/g electrode material. These nickel oxide films maintain high utilization at high rates of discharge (i.e., high power density) and have excellent cycle life. Porous cobalt oxide films were also synthesized. Although the specific capacitances of these films are approximately one-fifth that of the nickel oxide films, the results demonstrate the versatility of fabricating a wide range of porous metal oxide films using …

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Molecular-Level Modeling Of The Viscoelasticity Of Crosslinked Polymers: Effect Of Time And Temperature, Philip P. Simon, Harry J. Ploehn Jan 1997

Molecular-Level Modeling Of The Viscoelasticity Of Crosslinked Polymers: Effect Of Time And Temperature, Philip P. Simon, Harry J. Ploehn

Faculty Publications

We present a new molecular-level picture of chain dynamics for describing the viscoelasticity of crosslinked polymers. The associated mathematical model consists of a time-dependent momentum balance on a representative polymer segment in the crosslinked network, plus phenomenological expressions for forces acting on the segments. These include a cohesive force that accounts for intermolecular attraction, an entropic force describing the thermodynamics governing chain conformations, and a frictional force that captures the temperature dependence of relative chain motion. We treat the case of oscillatory uniaxial deformation. Solution of the model equations in the frequency domain yields the dynamic moduli as functions of …

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Three-Dimensional Direct Simulation Monte Carlo Method For Slider Air Bearings, Alejandro Garcia, W. Huang, D. B. Bogy Jan 1997

Three-Dimensional Direct Simulation Monte Carlo Method For Slider Air Bearings, Alejandro Garcia, W. Huang, D. B. Bogy

Faculty Publications

The direct simulation Monte Carlo (DSMC) method is used to solve the three-dimensional nano-scale gas film lubrication problem between a gas bearing slider and a rotating disk, and this solution is compared to the numerical solution of the compressible Reynolds equations with the slip flow correction based on the linearized Boltzmann equation as presented by Fukui and Kaneko [molecular gas film lubrication (MGL) method] [ASME J. Tribol. 110, 253 (1988)]. In the DSMC method, hundreds of thousands of simulated particles are used and their three velocity components and three spatial coordinates are calculated and recorded by using a hard-sphere collision …

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