35,689 research outputs found
Towards an Improved Test of the Standard Model's Most Precise Prediction
The electron and positron magnetic moments are the most precise prediction of
the standard model of particle physics. The most accurate measurement of a
property of an elementary particle has been made to test this result. A new
experimental method is now being employed in an attempt to improve the
measurement accuracy by an order of magnitude. Positrons from a "student
source" now suffice for the experiment. Progress toward a new measurement is
summarized
Proceedings of the Twentieth Annual Biochemical Engineering Symposium
The 20th Annual Biochemical Engineering Symposium was held at Kansas State University on April 21,1990. The objectives of the symposium were to provide: (i) a forum for informal discussion of biochemical engineering research being conducted at the participating institutions and (ii) an opportunity for students to present and publish their work.
Twenty-eight papers presented at the symposium are included in this proceedings. Some of the papers describe the progress of ongoing projects, and others contain the results of completed projects. Only brief summaries are given of the papers that will be published in full elsewhere. The program of the symposium and a list of the participants are included in the proceedings.
ContentsCell Separations and Recycle Using an Inclined Settler, Ching-Yuan Lee, Robert H. Davis and Robert A. Sclafani
Micromixing and Metabolism in Bioreactors: Characterization of a 14 L Fermenter, K.S. Wenger and E.H. Dunlop
Production, Purification, and Hydrolysis Kinetics of Wild-Type and Mutant Glucoamylases from Aspergillus Awamori, Ufuk Bakir, Paul D. Oates, Hsiu-Mei Chen and Peter J. Reilly
Dynamic Modeling of the Immune System, Barry Vant-Hull and Dhinakar S. Kompala
Dynamic Modeling of Active Transport Across a Biological Cell: A Stochastic Approach, B.C. Shen, S.T. Chou, Y.Y. Chiu and L.T. Fan
Electrokinetic Isolation of Bacterial Vesicles and Ribosomes, Debra T.L. Hawker, Robert H. Davis, Paul W. Todd, and Robert Lawson
Application of Dynamic Programming for Fermentative Ethanol Production by Zymomonas mobilis, Sheyla L. Rivera and M. Nazmul Karim
Biodegradation of PCP by Pseudomonas cepacia, R. Rayavarapu, S.K. Banerji, and R.K. Bajpai
Modeling the Bioremediation of Contaminated Soil Aggregates: a Phenomenological Approach, S. Dhawan, L.E. Erickson and L.T. Fan
Biospecific Adsorption of Glucoamylase-I from Aspergillus niger on Raw Starch, Bipin K. Dalmia and Zivko L. Nikolov
Overexpression in Recombinant Mammalian Cells: Effect on Growth Rate and Genetic Instability, Jeffrey A. Kern and Dhinakar S. Kompala
Structured Mathematical Modeling of Xylose Fermentation, A.K. Hilaly, M.N. Karim, I. C. Linden and S. Lastick
A New Culture Medium for Carbon-limited Growth of Bacillus thuringiensis, W. -M. Liu and R.K. Bajpai
Determination of Sugars and Sugar Alcohols by High Performance Ion Chromatography, T. J. Paskach, H.-P. Lieker, P.J. Reilly, and K. Thielecke
Characterization of Poly-Asp Tailed B-Galactosidase, M.Q. Niederauer, C.E. Glatz, l.A. Suominen, C.F. Ford, and M.A. Rougvie
Computation of Conformations and Energies of cr-Glucosyl Disaccharides, Jing Zepg, Michael K. Dowd, and Peter J. Reilly
Pentachlorophenol Interactions with Soil, Shein-Ming Wei, Shankha K. Banerji, and Rakesh K. Bajpai
Oxygen Transfer to Viscous Liquid Media in Three-Phase Fluidized Beds of Floating Bubble Freakers, Y. Kang, L.T. Fan, B.T. Min and S.D. Kim
Studies on the Invitro Development of Chick Embryo, A. Venkatraman and T. Panda
The Evolution of a Silicone Based Phase-Separated Gravity-Independent Bioreactor, Peter E. Villeneuve and Eric H. Dunlop
Biodegradation of Diethyl Phthalate, Guorong Zhang, Kenneth F. Reardon and Vincent G. Murphy
Microcosm Treatability of Soil Contaminated with Petroleum Hydrocarbons, P. Tuitemwong, S. Dhawan, B.M. Sly, L.E. Erickson and J.R. Schluphttps://lib.dr.iastate.edu/bce_proceedings/1019/thumbnail.jp
Proceedings of the Third Biochemical Engineering Symposium (April 28, 1973)
This report presents the proceedings of the Biochemical Engineering Symposium held at Kansas State University, April 28, 1973. Since a number of the contributions will be published in detail elsewhere, only brief summaries of each contribution are included here. Requests for additional information on projects conducted at The University of Nebraska should be directed to Dr. Peter J. Reilly, and those at Kansas State University to the editors.
ContentsKenneth J. Jacobson, Andrew H.C. Chan, and Raymond C. Eliason, Properties and Utilization of Small Particulates in Cattle Manure
Cady R. Engler and James S. Yohn, Protein from Manure
Robert J. Williams, Kinetics of Sucrose Inversion Using Invertase Immobilized on Hollow Fibers of Cellulose Acetate
David F. Aldis and Thomas A. Carlisle, Study of a Triiodide-Resin Complex Disinfection System
John C. Heydweiller, Modeling and Analysis of Symbiotic Growth
Kenneth J. Jacobson, Synchronized Growth of the Blue Green Alga Microcystis aeruginosa
Clarence C. Y. Ron arui Lincoln L. S. Yang, Computer Modeling of the Reductive Pentose Phosphate Cycle
Ming-ching T. Kuo, Application of a Parallel Biochemical Oxidation Kinetic Model to the Design of an Activated Sludge System Including a Primary Clarifier
Prakash N. Mishra, Optimal Synthesis of Water Renovation Systemshttps://lib.dr.iastate.edu/bce_proceedings/1002/thumbnail.jp
Proceedings of the Twelfth Annual Biochemical Engineering Symposium
This work presents the proceedings of the twelfth symposium which was held at Kansas State University on April 24, 1982. Since a number of the contributions will be published in detail elsewhere, only brief reports are included here. Some of the reports describe current progress with respect to ongoing projects. Requests for further information should be directed to Dr. Peter Reilly at Iowa State University, Dr. V. G. Murphy at Colorado State University, Dr. Rakesh Bajpai at University of Missouri, Dr. Ed Clausen at University of Arkansas, Dr. L. T. Fan and Dr. L. E. Erickson at Kansas State University.
ContentsA Kinetic Analysis of Oleaginous Yeast Fermentation by Candida curvata on Whey Permeate, B.D. Brown and K.H. Hsu, Iowa State University
Kinetics of Biofouling in Simulated Water Distribution Systems Using CSTR, T.M. Prakash, University of Missouri
Kinetics of Gas Production by C. acetobutylicum, Michael Doremus, Colorado State University
Large Scale Production of Methane from Agricultural Residues, O.P. Doyle, G.C. Magruder, E.C. Clausen, and J.L. Gaddy, University of Arkansas
The Optimal Process Design for Enzymatic Hydrolysis of Wheat Straw, M.M Gharpuray and L.T. Fan, Kansas State University
Extractive Butanol Fermentation, Michael Sierks, Colorado State University
Yields Associated with Ethyl Alcohol Production, M.D. Oner, Kansas State University
Estimation of Growth Yield and Maintenance Parameters for Microbial Growth on Corn Dust, B.O. Solomon, Kansas State University
Milling of Ensiled Corn, Andrzej Neryng, Iowa State University
Protein Extraction from Alfalfa, Ravidranath Joshi, Colorado State University
Analysis of Disaccharides by Capillary Gas Chromatography, Z.L. Nikolov, Iowa State University
Characterization of High Viscosity Fermentations in Tower Fermentors, S.A. Patel and C.H. Lee, Kansas State University
Utilization of Sugars in Sorghum Molasses by Clostridium acetobutylicum B. Hong, K.C. Shin, and L.T. Fan, Kansas State Universityhttps://lib.dr.iastate.edu/bce_proceedings/1011/thumbnail.jp
Proceedings of the Fifth Biochemical Engineering Symposium
This report presents the proceedings of the Biochemical Engineering Symposium held at Kansas State University, April 26, 1975. Since a number of the contributions will be published in detail elsewhere, only brief summaries of each contribution are included here. Requests for additional information on projects conducted at Iowa State University should be directed to Dr. Peter J. Reilly, and those at Kansas State University to the editors.
Contents Enzymatic Breakdown of Hemicellulose, Alfred R. Fratzke, Iowa State University
Biochemical Aspects of Hydrocarbon Uptake in Hydrocarbon Fermentations, Tadaatsu Nakahara, Kansas State University
Optimal Concentration Profiles for Bifunctional Catalysts with Langmuir-Hinshelwood Kinetics and Varying Effectiveness Factors, Ho Nam Chang, Iowa State University
Single Cell Protein Production from Hydrocarbons in Tower Systems, J. R. Gutierrez, Kansas State University
Effect of Temperature and pH on the Stability and Activity of Immobilized Glucoamylase and Glucose Isomerase, Gene K. Lee, Iowa State University
Oxygen Transfer in a Tower System with Two Liquid Phases, G. T. MacLean, Kansas State University
Continuous Production of Glucose from Dextrin by Glucoamylase Immlobilized on Porous Silica, Douglas D. Lee, Iowa State Universityhttps://lib.dr.iastate.edu/bce_proceedings/1004/thumbnail.jp
Biochemical Engineering Symposium Proceedings (June 4, 1971)
This report presents the proceedings of the Biochemical Engineering Symposium held at Kansas State University, June 4, 1971. Since most of the papers will be published elsewhere, only very brief papers are included here. Moreover, several of the projects are still in progress at this time. Request for additional information on projects conducted at the University of Nebraska should be directed to Dr. Peter J. Reilly and for Kansas State University to Dr. L. E. Erickson.
ContentsChao, Chih-Cheng, University of Nebraska, Symbiotic Growth of Actobacter suboxydans and Saccharomyces carlsbergensis in a Chemostat
S.Y. Chiu, Kansas State University, Model Identification in Mixed Populations Using Continuous Culture Data
Shinji Goto, University of Nebraska, Symbiotic Growth of Bacteria and Blue Green Algae in a Chemostat
I.C. Kao, Kansas State University, ATP as a Parameter of Mixed Culture Interaction
Indravadan R. Kothari, University of Nebraska, Growth of Single Cells of Schizocaccharomyces pombe under Nutrient Limitation
G.C.Y. Chu, Kansas State University, Experimental Optimization of Biological Waste Treatment Processes
Mark Young, University of Nebraska, Aerobic Fermentation of Paunch Liquor
P.S. Shah, Kansas State University, Optimal Control of Growth Processeshttps://lib.dr.iastate.edu/bce_proceedings/1000/thumbnail.jp
Optimal focusing for maximal collection of entangled narrow-band photon pairs into single-mode fibers
We present a theoretical and experimental investigation of the emission
characteristics and the flux of photon pairs generated by spontaneous
parametric downconversion in quasi-phase matched bulk crystals for the use in
quantum communication sources. We show that, by careful design, one can attain
well defined modes close to the fundamental mode of optical fibers and obtain
high coupling efficiencies also for bulk crystals, these being more easily
aligned than crystal waveguides. We distinguish between singles coupling,
conditional coincidence, and pair coupling, and show how each of these
parameters can be maximized by varying the focusing of the pump mode and the
fiber-matched modes using standard optical elements. Specifically we analyze a
periodically poled KTP-crystal pumped by a 532 nm laser creating photon pairs
at 810 nm and 1550 nm. Numerical calculations lead to coupling efficiencies
above 94% at optimal focusing, which is found by the geometrical relation L/z_R
to be ~ 1 to 2 for the pump mode and ~ 2 to 3 for the fiber-modes, where L is
the crystal length and z_R is the Rayleigh-range of the mode-profile. These
results are independent on L. By showing that the single-mode bandwidth
decreases as 1/L, we can therefore design the source to produce and couple
narrow bandwidth photon pairs well into the fibers. Smaller bandwidth means
both less chromatic dispersion for long propagation distances in fibers, and
that telecom Bragg gratings can be utilized to compensate for broadened photon
packets--a vital problem for time-multiplexed qubits. Longer crystals also
yield an increase in fiber photon flux proportional to sqrt{L}, and so,
assuming correct focusing, we can only see advantages using long crystals.Comment: 19 pages, 15 figures, ReVTeX4, minor revisio
Recommended from our members
Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses
Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments
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