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2006

Iowa State University

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Normal?, Olivia Langenberg Dec 2006

Normal?, Olivia Langenberg

Sketch

No abstract provided.


Synthesis And Characterization Of Hydrated Rubidium Thio-Hydroxosilicogermanates Using Mechanochemical Hydrothermal Synthesis, Carly R. Nelson, Sarah Olson, Steven A. Poling, Steve W. Martin Dec 2006

Synthesis And Characterization Of Hydrated Rubidium Thio-Hydroxosilicogermanates Using Mechanochemical Hydrothermal Synthesis, Carly R. Nelson, Sarah Olson, Steven A. Poling, Steve W. Martin

Materials Science and Engineering Publications

The synthesis, structure, and proton conductivity of the hydrated thio-hydroxosilicogermanates RbzGexSi1-xSz(OH)4-z·yH2O (2 ≤ z ≤ 3; 0 < y < 1.7) are reported. X-ray diffraction indicates that the z = 2 materials are amorphous and show no unreacted starting materials, which is consistent with the mechanochemical hydrothermal evaporation−precipitation synthesis method. Infrared spectroscopy shows a fully reacted system where both silicon and germanium central anions have vibrational modes at 950, 780, 667, and 450 cm-1 associated with asymmetric modes for Si−O, Ge−O, Si−S, and Ge−S chemical bonds, respectively. O−H stretching and bending modes are present at ...


Behavioral Subtyping Is Equivalent To Modular Reasoning For Object-Oriented Programs, Gary T. Leavens, David A. Naumann Dec 2006

Behavioral Subtyping Is Equivalent To Modular Reasoning For Object-Oriented Programs, Gary T. Leavens, David A. Naumann

Computer Science Technical Reports

Behavioral subtyping is an established idea that enables modular reasoning about behavioral properties of object-oriented programs. It requires that syntactic subtypes are behavioral refinements. It validates reasoning about a dynamically-dispatched method call, say E.m(), using the specification associated with the static type of the receiver expression E. For languages with references and mutable objects the idea of behavioral subtyping has not been rigorously formalized as such and the standard informal notion has inadequacies. This paper formalizes behavioral subtyping and introduces a new formalization of modular reasoning, called supertype abstraction. A Java-like sequential language is considered, with classes and interfaces ...


Carbon Monoxide Mass Transfer In A Syngas Mixture, Amir Kapic, Samuel T. Jones, Theodore J. Heindel Dec 2006

Carbon Monoxide Mass Transfer In A Syngas Mixture, Amir Kapic, Samuel T. Jones, Theodore J. Heindel

Mechanical Engineering Publications

A myoglobin assay for measuring concentrations of dissolved carbon monoxide (CO) from an artificial synthesis gas blend (20% CO, 18% CO2, 52% N2, and 10% H2) was utilized to determine volumetric CO−water mass-transfer rates in a 0.211-m-diameter stirred-tank reactor (STR). The data are well correlated using the power density and superficial gas velocity, but this correlation is valid only for this STR size. A gas−liquid scale-up model developed for dissolved oxygen mass-transfer rates using air was used to develop a CO−liquid scale-up model for syngas fermentation. The model is applicable in the STR hydrodynamic range associated ...


New Extension Corn Production Web Site, Lori Abendroth, Roger W. Elmore Dec 2006

New Extension Corn Production Web Site, Lori Abendroth, Roger W. Elmore

Integrated Crop Management News

We've designed a new Web site for Iowa State University Extension corn production that has current and relevant management information for producing corn in Iowa. The Web site provides research-based recommendations and diagnostic tools for producers and agribusinesses. The largest section of the Web site is devoted to "Corn Management," which is broken into categories based on whether the topic addresses overarching production issues, such as cropping systems and rotations, or if the topic can be isolated to a certain time of the growing season (planting, early-season, mid-/late-season, harvest). For example, in the "Planting" category, users can find ...


A Response To Phenomenon In 2006: Multiple Ears Per Node, Roger W. Elmore, Lori Abendroth Dec 2006

A Response To Phenomenon In 2006: Multiple Ears Per Node, Roger W. Elmore, Lori Abendroth

Integrated Crop Management News

Corn hybrids from several companies expressed more than one ear at a single node from Iowa to Indiana in 2006. Multiple ears are not unexpected, but they typically occur at different nodes (as with prolific hybrids), not on the same node. This trait was expressed in different ways in Iowa. In the most extreme cases, up to eight ears occurred at a single node. Some have called these "bouquets." Ears on these plants were usually barren. In one case, a field with bouquet ears yielded 50 bu/acre.


How To Interpret Scn Soil Test Results, Gregory L. Tylka Dec 2006

How To Interpret Scn Soil Test Results, Gregory L. Tylka

Integrated Crop Management News

Soybean yield loss due to the soybean cyst nematode (SCN) occurred throughout much of Iowa in 2006. Damage from this pest was particularly noticeable in areas of the state that were very dry. There seems to be increased interest in testing for and managing SCN in Iowa this fall, and there likely has been more fields sampled for SCN this fall than in recent years. Following are some commonly asked questions and answers that illustrate things to consider when interpreting SCN soil sample results. This information is excerpted from Iowa State University Extension publication IPM 61, Interpreting SCN Soil Sample ...


Crop Performance Test Bulletins Now Available, Keven Arrowsmith Dec 2006

Crop Performance Test Bulletins Now Available, Keven Arrowsmith

Integrated Crop Management News

Results of the 2006 Iowa Crop Performance Tests for alfalfa, barley, corn, oat, soybean, triticale, and winter wheat are now available. For those wanting to download a copy of the bulletins, visit the Iowa Crop Improvement Association (ICIA) Web site or the Iowa State University (ISU) Extension Distribution Center (EDC) online store. Published bulletins may be requested by contacting ICIA at (515) 294-6921 or EDC at (515) 294-5247.


Aphids In The Air: What Is The Risk For 2007?, Wayne Ohnesorg, Matthew E. O'Neal, Marlin E. Rice Dec 2006

Aphids In The Air: What Is The Risk For 2007?, Wayne Ohnesorg, Matthew E. O'Neal, Marlin E. Rice

Integrated Crop Management News

The 2006 growing season has come to a close and with it another year's worth of experience with the soybean aphid. For many, it was a quiet, "low aphid" year with few reports of economic outbreaks within Iowa. Reflecting these low populations in the field, we observed fewer aphids within our suction traps (Figure 1) compared to the 2005 growing season when the traps collected nearly 100 times more aphids (Figure 2). For the last two years, the Iowa suction trap network (Figure 3) has been part of a larger network of suction traps located in nine states throughout ...


Dynamics And Structures Of Segregation In A Dense, Vibrating Granular Bed, Jin Sun, Francine Battaglia, Shankar Subramaniam Dec 2006

Dynamics And Structures Of Segregation In A Dense, Vibrating Granular Bed, Jin Sun, Francine Battaglia, Shankar Subramaniam

Mechanical Engineering Publications

We study the rise dynamics of a large particle in a granular bed under vertical vibration using molecular dynamics simulations. Systematic variation of the particle properties and external wall friction in the simulations shows that the large particle rising is very sensitive to external wall friction. The dynamical response of the granular bed with wall friction is shown to include an expansion stage and a compression stage within one cycle. With wall friction, large-scale force networks bearing larger-than-average forces are found in the compression stage. However, without wall friction, large strong force networks do not exist. The distribution of normal ...


High-Resolution, Real-Time Three-Dimensional Shape Measurement, Song Zhang, Peisen S. Huang Dec 2006

High-Resolution, Real-Time Three-Dimensional Shape Measurement, Song Zhang, Peisen S. Huang

Song Zhang

We describe a high-resolution, real-time 3-D shape measurement system based on a digital fringe projection and phase-shifting technique. It utilizes a single-chip digital light processing projector to project computer-generated fringe patterns onto the object, and a high-speed CCD camera synchronized with the projector to acquire the fringe images at a frame rate of 120frames∕s. A color CCD camera is also used to capture images for texture mapping. Based on a three-step phase-shifting technique, each frame of the 3-D shape is reconstructed using three consecutive fringe images. Therefore the 3-D data acquisition speed of the system is 40frames∕s. With ...


Equilibrium Layoff As Termination Of A Dynamic Contract, Cheng Wang Dec 2006

Equilibrium Layoff As Termination Of A Dynamic Contract, Cheng Wang

Economics Working Papers (2002–2016)

In a dynamic model of the labor market with moral hazard, equilibrium layoff is modeled as termination of an optimal long-term contract. Termination, together with compensation (current and future), is used as an incentive device to induce worker efforts. I then use the model to study analytically the effects of a firing tax on termination and worker compensation and utility. There are three layers to the impact of a firing tax on layoff and worker utility. A higher firing tax could either reduce aggregate termination and increase worker utility, or increase aggregate termination and reduce worker utility, depending on the ...


Cases, Regulations, And Statutes, Robert P. Achenbach Jr Dec 2006

Cases, Regulations, And Statutes, Robert P. Achenbach Jr

Agricultural Law Digest

No abstract provided.


Index To Volume 17, Nos. 1-24, Agricultural Law Digest Dec 2006

Index To Volume 17, Nos. 1-24, Agricultural Law Digest

Agricultural Law Digest

No abstract provided.


Bankruptcy Court Interpretation Of Chapter 12 Tax Rules, Neil E. Harl, Joseph A. Peiffer Dec 2006

Bankruptcy Court Interpretation Of Chapter 12 Tax Rules, Neil E. Harl, Joseph A. Peiffer

Agricultural Law Digest

The first Bankruptcy Court interpretation1 of the provisions in the Bankruptcy Abuse Prevention and Consumer Protection Act of 20052 pertaining to the income tax treatment of asset dispositions in Chapter 12 bankruptcy cases3 has been published. The first case, involving a hog farmer from Northern Iowa who had encountered disease problems in the swine herd and a series of accidents (following a period of low hog prices), tested the income tax rules enacted in 2005 for Chapter 12 filers. Although the decision was favorable to the taxpayers on some issues, the opinion did not go as far ...


Report To The Provost From The Task Force To Review Dialogues On Diversity, Task Force To Review Dialogues On Diversity, Iowa State University Dec 2006

Report To The Provost From The Task Force To Review Dialogues On Diversity, Task Force To Review Dialogues On Diversity, Iowa State University

Office of the Provost Reports

One of the action items arising from the work of the Campus Climate Implementation Team and the President’s Advisory Committee on Diversity was a request from the President to the Provost to review the Dialogues on Diversity course. The Provost instructed this Task Force to review the current Dialogues on Diversity course to determine how it should be continued for optimal impact and to determine whether it is appropriate to add a “Dialogues—Part 2” to the curriculum. The Provost’s charge to the Task Force also asked for recommendations that include details on the following components of the ...


Modeling Of The Size Effects On The Behavior Of Metals In Microscale Deformation Processes, Gap-Yong Kim, Jun Ni, Muammer Koc Dec 2006

Modeling Of The Size Effects On The Behavior Of Metals In Microscale Deformation Processes, Gap-Yong Kim, Jun Ni, Muammer Koc

Gap-Yong Kim

For the accurate analysis and design of microforming process, proper modeling of material behavior at the micro/mesoscale is necessary by considering the size effects. Two size effects are known to exist in metallic materials. One is the “grain size” effect, and the other is the “feature/specimen size” effect. This study investigated the feature/specimen size effect and introduced a scaling model which combined both feature/specimen and grain size effects. Predicted size effects were compared with three separate experiments obtained from previous research: a simple compression with a round specimen, a simple tension with a round specimen, and ...


Partially Identifying The Prevalence Of Health Insurance Given Contaminated Sampling Response Error, Brent Kreider Dec 2006

Partially Identifying The Prevalence Of Health Insurance Given Contaminated Sampling Response Error, Brent Kreider

Economics Working Papers (2002–2016)

This paper derives simple closed-form identification regions for the U.S. nonelderly population's prevalence of health insurance coverage in the presence of household reporting errors. The methods extend Horowitz and Manski's (1995) nonparametric analysis of contaminated samples for the case that the outcome is binary. In this case, draws from the alternative distribution (i.e., not the distribution of interest) might naturally be defined as response errors. The derived identification regions can dramatically reduce the degree of uncertainty about the outcome distribution compared with the contaminated sampling bounds. These regions are estimated using data from the Medical Expenditure ...


Modular Subclass Verification: Safely Creating Correct Subclasses Without Superclass Code, Clyde Ruby Dec 2006

Modular Subclass Verification: Safely Creating Correct Subclasses Without Superclass Code, Clyde Ruby

Computer Science Technical Reports

The documentation of object-oriented frameworks and class libraries needs to provide enough information so programmers can reason about the correctness of subclass methods without superclass code. Even though a superclass method satisfies its specification and behaves properly in the context of the superclass itself, a new subclass may cause that method to have unexpected or unverifiable behavior. For example, inherited superclass code can call down to subclass methods which may cause a superclass method to no longer satisfy its specification. Furthermore, without superclass code, downcalls can result in unverifiable side-effects. Aliasing can also result in unexpected or unverifiable side-effects. In ...


Effect Of Chain Architecture And Surface Energies On The Ordering Behavior Of Lamellar And Cylinder Forming Block Copolymers, V. Khanna, Eric W. Cochran, A. Hexemer, G. E. Stein, G. H. Fredrickson, E. J. Kramer, X. Li, J. Wang, S. F. Hahn Dec 2006

Effect Of Chain Architecture And Surface Energies On The Ordering Behavior Of Lamellar And Cylinder Forming Block Copolymers, V. Khanna, Eric W. Cochran, A. Hexemer, G. E. Stein, G. H. Fredrickson, E. J. Kramer, X. Li, J. Wang, S. F. Hahn

Eric W. Cochran

We investigate the effect of surface energy and chain architecture on the orientation of microdomains in relatively thick films (600-800 nm) of lamellar and cylindrical block copolymers of poly(cyclohexylethylene) (C) and poly(ethylene) (E). The E block has 26 ethyl branches per 1000 backbone carbon atoms. Melt surface energies of the C and E blocks are 22.3 and 20.9 mJ/m 2, respectively. Grazing-incidence small-angle X-ray scattering (GISAXS), scanning force microscopy (SFM), and cross-sectional transmission electron microscopy (TEM) show that cylindrical and lamellar CEC triblock copolymers orient their microdomains normal to the surface throughout the film thickness ...


Magic And Superstition In Europe: A Concise History From Antiquity To The Present, Michael D. Bailey Dec 2006

Magic And Superstition In Europe: A Concise History From Antiquity To The Present, Michael D. Bailey

History Books

The only comprehensive, single-volume survey of magic available, this compelling book traces the history of magic, witchcraft, and superstitious practices such as popular spells or charms from antiquity to the present day. Focusing especially on Europe in the medieval and early modern eras, Michael Bailey also explores the ancient Near East, classical Greece and Rome, and the spread of magical systems_particularly modern witchcraft or Wicca_from Europe to the United States. He examines how magic and superstition have been defined in various historical eras and how these constructions have changed over time. He considers the ways in which specific categories of ...


Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, Bradley Allen Miller, Matt Helmers Dec 2006

Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, Bradley Allen Miller, Matt Helmers

Ecology, Evolution and Organismal Biology Reports

The primary objective of this project was to estimate the nitrate reduction that could be achieved using restored wetlands as nitrogen sinks in tile-drained regions of the upper Mississippi River (UMR) and Ohio River basins. This report provides an assessment of nitrate concentrations and loads across the UMR and Ohio River basins and the mass reduction of nitrate loading that could be achieved using wetlands to intercept nonpoint source nitrate loads. Nitrate concentration and stream discharge data were used to calculate stream nitrate loading and annual flow-weighted average (FWA) nitrate concentrations and to develop a model of FWA nitrate concentration ...


Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, B. A. Miller, Matthew J. Helmers Dec 2006

Potential Benefits Of Wetland Filters For Tile Drainage Systems: Impact On Nitrate Loads To Mississippi River Subbasins, William G. Crumpton, Greg A. Stenback, B. A. Miller, Matthew J. Helmers

Agricultural and Biosystems Engineering Technical Reports and White Papers

The primary objective of this project was to estimate the nitrate reduction that could be achieved using restored wetlands as nitrogen sinks in tile-drained regions of the upper Mississippi River (UMR) and Ohio River basins. This report provides an assessment of nitrate concentrations and loads across the UMR and Ohio River basins and the mass reduction of nitrate loading that could be achieved using wetlands to intercept nonpoint source nitrate loads. Nitrate concentration and stream discharge data were used to calculate stream nitrate loading and annual flow-weighted average (FWA) nitrate concentrations and to develop a model of FWA nitrate concentration ...


High-Level Resistance To Bacillus Thuringiensis Toxin Cry1ac And Cadherin Genotype In Pink Bollworm, Aaron J. Gassmann, Robert W. Biggs, Jeffrey A. Fabrick, Bruce E. Tabashnick, Timothy J. Dennehy, Yves Carriere, Shai Morin Dec 2006

High-Level Resistance To Bacillus Thuringiensis Toxin Cry1ac And Cadherin Genotype In Pink Bollworm, Aaron J. Gassmann, Robert W. Biggs, Jeffrey A. Fabrick, Bruce E. Tabashnick, Timothy J. Dennehy, Yves Carriere, Shai Morin

Aaron J. Gassmann

Resistance to transgenic cotton, Gossypium hirsutum L., producing Bacillus thuringiensis (Bt) toxin Cry1Ac is linked with three recessive alleles of a cadherin gene in laboratory-selected strains of pink bollworm, Pectinophora gossypiella (Saunders), a major cotton pest. Here, we analyzed a strain (MOV97-R) with a high frequency of cadherin resistance alleles, a high frequency of resistance to 10 μg of Cry1Ac per milliliter of diet, and an intermediate frequency of resistance to 1,000 μg of Cry1Ac per ml of diet. We selected two strains for increased resistance by exposing larvae from MOV97-R to diet with 1,000 μg of Cry1Ac ...


Aujeszky’S Disease, Iowa State University Center For Food Security And Public Health Dec 2006

Aujeszky’S Disease, Iowa State University Center For Food Security And Public Health

Center for Food Security and Public Health Technical Factsheets

Aujeszky’s disease (pseudorabies) is a highly contagious, economically significant disease of pigs. This viral infection causes central nervous system (CNS) signs and high mortality rates in young animals, and respiratory illness in older pigs. Other species may be infected when they come in contact with infected pigs, resulting in a universally fatal CNS disease. Aujeszky’s disease can result in trade restrictions from regions where it is endemic. Eradication programs are underway or have been successful in many countries. In the United States, all states are now considered to be free of the virus in domesticated swine, and a ...


Amblyomma Hebraeum, Iowa State University Center For Food Security And Public Health Dec 2006

Amblyomma Hebraeum, Iowa State University Center For Food Security And Public Health

CFSPH fichas de las enfermedades

Amblyomma hebraeum es una garrapata dura que infesta al ganado y a los animales silvestres. También pica a los humanos. Las largas piezas bucales de Amblyomma hacen que esta garrapata sea difícil de quitar en forma manual; estas garrapatas también dejan grandes heridas que se pueden infectar con bacterias o infestar con gusanos barrenadores. A. hebraeum puede transmitir Ehrlichia ruminantium (anteriormente denominada Cowdria ruminantium), que es el agente causal de la cowdriosis. Esta garrapata también es portadora de Rickettsia africae, que causa la fiebre por picadura de la garrapata africana, una zoonosis emergente en zonas rurales del África subsahariana y ...


Amblyomma Hebraeum, Iowa State University Center For Food Security And Public Health Dec 2006

Amblyomma Hebraeum, Iowa State University Center For Food Security And Public Health

Center for Food Security and Public Health Technical Factsheets

Amblyomma hebraeum is a hard tick that infests livestock and wildlife. It also bites humans. The long mouthparts of Amblyomma ticks make them difficult to remove manually; these ticks also leave large wounds that may become infected by bacteria or infested by screwworms. A. hebraeum can transmit Ehrlichia ruminantium (formerly Cowdria ruminantium), the agent of heartwater. This tick also carries Rickettsia africae, the agent of African tick-bite fever, an emerging zoonosis in rural sub-Saharan Africa and the Caribbean.


Creating Offshore-Ready It Professionals: A Global Perspective And Strong Collaborative Skills Are Needed, Kevin P. Scheibe, Brian E. Mennecke, Christopher W. Zobel Dec 2006

Creating Offshore-Ready It Professionals: A Global Perspective And Strong Collaborative Skills Are Needed, Kevin P. Scheibe, Brian E. Mennecke, Christopher W. Zobel

Supply Chain and Information Systems Publications

Outsourcing of IT functions has become a widespread corporate practice, which has naturally led to concerns among IT works about how this affects their jobs. The issue is complex, and many companies are bringing their IT functions back inhouse. In light of this complexity, what skills do IT workers need to be com-petitive? We address this question first by reviewing the literature and then by examining two corporate case studies that have dealt with outsourcing issues. Based on this view of outsourcing, we discuss the skills that can provide a com-petitive advantage in the current environment.


Enfermedad De Aujeszky, Iowa State University Center For Food Security And Public Health Dec 2006

Enfermedad De Aujeszky, Iowa State University Center For Food Security And Public Health

CFSPH fichas de las enfermedades

La enfermedad de Aujeszky (seudorrabia) es una enfermedad altamente contagiosa que afecta a los cerdos, de gran importancia económica. Esta infección viral afecta el sistema nervioso central (SNC), presenta índices de mortalidad elevados en los animales jóvenes; en cerdos adultos produce afecciones respiratorias. Otras especies pueden infectarse al entrar en contacto con cerdos infectados, dando como resultado una enfermedad del SNC de alta mortalidad. Esta enfermedad puede ocasionar restricciones comerciales para las regiones endémicas. Actualmente existen programas de erradicación que han resultado exitosos en muchos países. Hoy en día, se considera que en Estados Unidos los cerdos domésticos están libres ...


Monitoring Responses By Use Of Five-Color Flow Cytometry In Subsets Of Peripheral T Cells Obtained From Cattle Inoculated With A Killed Mycobacterium Avium Subsp Paratuberculosis Vaccine, Ratree Platt, James A. Roth, Ryan L. Royer, Charles O. Thoen Dec 2006

Monitoring Responses By Use Of Five-Color Flow Cytometry In Subsets Of Peripheral T Cells Obtained From Cattle Inoculated With A Killed Mycobacterium Avium Subsp Paratuberculosis Vaccine, Ratree Platt, James A. Roth, Ryan L. Royer, Charles O. Thoen

Veterinary Microbiology and Preventive Medicine Publications

Objective—To monitor by use of 5-color flow cytometry the antigen-specific responses of subsets of peripheral T cells in cattle inoculated with a killed Mycobacterium avium subsp paratuberculosis (MAP) vaccine and to compare results with those for 2 established cell-mediated immunity assays.

Animals—45 female Holstein cattle with negative results for MAP in skin tests conducted at time of inoculation with MAP.

Procedures—Cattle were allocated to 4 groups. Cattle of group 1 (n = 12) were 0 to 3 months old and inoculated with a killed MAP vaccine. The 10 cattle of group 2 were the same age as those ...