Engineering Commons^™

Magnetic Behavior Of Rapidly Solidified Pr–Co Alloys With The Tbcu7-Type Structure, J. Kostogorova, Jeffrey E. Shield

Nebraska Center for Materials and Nanoscience: Faculty Publications

Rapid solidification has been utilized to produce a series of Pr–Co alloys between the Pr₂Co₁₇ and PrCo₅ stoichiometries. In this system, PrCo₅ has easy axis magnetization while Pr₂Co₁₇ has easy-plane magnetization. Alloys of the form (Pr_xCo_1-x)₉₄Ti₃C₃ with x ranging from 0.105 corresponding to the Pr₂Co₁₇ compound tox=0.167 corresponding to the PrCo₅ compound were produced by melt spinning at a tangential wheel speed of 40 m/ s. The rapid solidification and alloying additions were found to suppress …

Structural And Magnetic Properties Of Laves Compounds Dy1-XPrX(Fe0.35Co0.55B0.1)2 (0≤X≤1), W.J. Ren, D. Li, Yucheng Sui, W. Liu, X.G. Zhao, J.J. Liu, J. Li, Z.D. Zhang

Nebraska Center for Materials and Nanoscience: Faculty Publications

Dy_1-xPr_x(Fe_0.35Co_0.55B_0.1)₂ (0≤x≤1) Laves compounds with a cubic MgCu₂-type structure were synthesized by arc melting and subsequent annealing. The lattice parameter of the Laves compounds linearly increases, while the Curie temperature T_c decreases with increasing Pr content. The saturation magnetization M₅ at 5 K or 295 K for the Dy_1-xPr_x(Fe_0.35Co_0.55B_0.1)₂ alloys decreases to reach a minimum, then increases with increasing Pr content. The composition for magnetic moment compensation is about x …

Acuta Enews April 2006, Vol. 35, No. 4

ACUTA Newsletters

ln This lssue

From the President............... Patricia Todus, Northwestern Univ., ACUTA President

Tech Talk: Working Up a Sweat over Power Consumption............ Kevin Tanzillo, Dux PR

Nominate for ACUTA Ruth A . Michalecki Award

lnfo Links................... Randy Hayes, Univ. of Northern lowa

How to Negotiate a Cell-Site Leasing Agreement............... Riny Ledgerwood, San Diego State Univ.

Board Report................. Riny Ledgerwood, Son Diego State Univ., ACUTA Sec..Treasurer

Web Tip: Visited the ACUTA Press Room Lately?................... Aaron Fuehrer, ACUTA lnformation Tech. Mgr.

DC Update...................... Whitney Johnson, Retired, No. Michigan Univ.

Welcome New Members

ACUTA Online Press Room

Internet Use By Teachers And Students In Engineering Colleges Of Punjab, Haryana, And Himachal Pradesh States Of India: An Analysis, Rajeev Kumar, Amritpal Kaur

E-JASL: Electronic Journal of Academic and Special Librarianship (1999-2009, Volumes 1-10)

Abstract

The aim of this study is to analyze the use of the Internet and related issues among the teachers and the students of engineering colleges in India’s three States viz. Punjab, Haryana and Himachal Pradesh. A well-structured questionnaire was distributed among the 1980 teachers and students of all the engineering colleges of the three states of India under study. The response rate was 80.9 percent. The present study demonstrates and elaborates the various aspects of Internet use, such as frequency of Internet use, methods used for learning of Internet skill, most frequently used place for Internet use, purposes for …

E-Resources And Services In Engineering College Libraries – A Case Study, K. R. Mulla, M. Chandrashekra

E-JASL: Electronic Journal of Academic and Special Librarianship (1999-2009, Volumes 1-10)

Introduction

Libraries have witnessed a great metamorphosis in recent years both in their collection development and in their service structure. Over the last several years, a significant transformation has been noticed in collection development policies and practices. Print medium is increasingly giving way to the electronic form of materials. This study examines libraries by region within the State of Karnataka, India. It examines the level of effort taken by the engineering college libraries in Karnataka to build electronic resources.

Engineering@Nebraska - Spring 2006

Engineering@Nebraska (Alumni Magazine)

Table of Contents:

A Swine Sensation: William Velander is creating a safe, inexpensive treatment for hemophilia using protein from the milk of transgenic pigs.
Bridging a Community: UNL and the Nebraska Department of Roads join together to build the United States’ first tied-arch bridge in Ravenna.
Five Men and a Machine Shop: The Engineering and Science Research Support Facility helps UNL faculty turn ideas into reality.
From the Gridiron to G-forces: Graduate student Curt Tomasevicz makes his Olympic debut.
The Industry Standard: The new Charles Durham School of Architectural Engineering and Construction is expected to train the next generation of …

Nebraska Blueprint – Spring 2006

Nebraska Blueprint (Student Publication)

Table of Contents:

Medical Marvels – "Biomedical engineering ties many branches of engineering together, encouraging teamwork and collaboration among departments as well as outside partners. This is a snapshot of some of the ongoing biomedical research at UNL."

Medication Nation: Pharmaceutical industry grows as it finds new uses for common drugs

The Freshman Connection – "The university's freshman learning community program"

E-Week 2006 [two photographs]

Semester Project For Engineering Management, Paul Savory

Department of Industrial and Management Systems Engineering: Instructional Materials

This is the team-based, semester project for my advanced engineering management course at the University of Nebraska-Lincoln. This project focuses on having student teams plan a successful, professional, innovative and enjoyable professional conference. This is an activity that many of of them will have the opportunity to be involved with during their career. The project is divided into nine tasks with peer feedback and rework part of the process.

Interfaces, Volume 8, Issue 1 - Spring 2006

INTERFACES: Newsletter of the Nebraska Center for Materials and Nanoscience

CONTENTS
From the Director
UNL Team Wins $3M DoD Grant
Recent Achievements of Center Researchers
Nanocomposite Permanent Magnets (by Jeff Shield)
NCMN Welcomes Mathias Schubert
Research Spotlight: Evgeny Tsymbal
Ion Beam Assisted Deposition at UNMC (by Fereydoon Namavar)
For the Ages - Book Projects at NCMN (by Ralph Skomski)

National Internet Repository For Course Portfolios, Paul Savory, Amy M. Goodburn, Amy Nelson Burnett

Department of Industrial and Management Systems Engineering: Faculty Publications

Faculty in higher education are increasingly asked to document, assess, and make public their teaching practices. Course portfolios are a valuable medium for capturing the scholarly work of one’s teaching by combining inquiry into the intellectual work of a course with a careful investigation of the quality of student understanding and performance. It enables a faculty member to document the careful, difficult, and intentional scholarly work of planning and teaching a course. Since a course portfolio can be read, evaluated, and used by others, it offers mechanisms for valuing teaching as scholarship and for improving student learning. This poster will …

Developing And Integrating A Campus Program For Scholarship Of Teaching And Learning Initiatives, Paul Savory, Amy M. Goodburn, Amy Nelson Burnett

Department of Industrial and Management Systems Engineering: Faculty Publications

Based on the successful campus model that the University of Nebraska-Lincoln has developed over ten years, and those of our project consortium partners (Texas A&M, Kansas State University, Indiana University–Bloomington, University of Michigan, and University of Kansas), this panel offers suggestions for creating a campus peer review program designed to promote the intellectual work of teaching generally and the scholarship of teaching and learning more specifically. We offer our perspective on approaches for getting started, establishing the project leadership, seeking funding to support a project, recruiting and supporting faculty participants, developing strategies for running the program, and assessing the project’s …

Flexible Tools For Specifying Design Variation, Trichy Pasupathy, Xiaoping Zhao, Robert Wilhelm

Department of Mechanical and Materials Engineering: Faculty Publications

This paper describes flexible tools for specifying design variations that are based on nonuniform profile tolerance definitions. These tools specify bounds of design performance that can be used for negotiation among engineers in a collaborative design process. These specification methods allow for the capture of many different design functions that are not easily described with current tool designs. In addition, these specification methods lend themselves to efficient verification methods. Profile tolerance definitions provide the most general variation controls for complex mechanical surfaces. Common design practices and engineering standards for profile tolerances exhibit many weaknesses and limitations. We present a rationale …

A Quantitative Model Of Error Accumulation During Pcr Amplification, Elsje Pienaar, M. Theron, M. Nelson, Hendrik J. Viljoen

Hendrik J. Viljoen Publications

The amplification of target DNA by the polymerase chain reaction (PCR) produces copies which may contain errors. Two sources of errors are associated with the PCR process: (1) editing errors that occur during DNA polymerase-catalyzed enzymatic copying and (2) errors due to DNA thermal damage. In this study a quantitative model of error frequencies is proposed and the role of reaction conditions is investigated. The errors which are ascribed to the polymerase depend on the efficiency of its editing function as well as the reaction conditions; specifically the temperature and the dNTP pool composition. Thermally induced errors stem mostly from …

Controlled Surface-Associated Delivery Of Genes And Oligonucleotides, Tatiana Segura, Lonnie D. Shea, Angela K. Pannier, Zain Bengali, Jae-Hyung Jang, Peter Chung, Brian C. Anderson

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A system and methods for controlled gene delivery comprising condensed nucleic acids complexed with polylinkers, wherein the complexes are covalently and/or noncovalently bound to the surface of a substrate capable of supporting cell adhesion. The gene delivery system achieves temporal and spatial control of nucleic acid delivery to a target cell or cells through control of complex density on the surface of the support substrate, and reversibility of the attachment of the polylinker to the support substrate. The system and method of the invention can be used to create spatial patterns of gene expression, and in tissue engineering, high throughput …

Retrofit Of Distillation Columns Using Thermodynamic Analysis, Yaşar Demirel

Papers in Physical Properties

Thermodynamic analysis provides the column grand composite curves and exergy loss profiles, which are becoming readily available for a converged distillation column simulation. For example, the Aspen Plus simulator performs the thermodynamic analysis through its Column–Targeting tool for rigorous column calculations. This study uses the column grand composite curves and the exergy loss profiles obtained from Aspen Plus to assess the performance of the existing distillation columns, and reduce the costs of operation by appropriate retrofits in a methanol plant. Effectiveness of the retrofits is also assessed by means of thermodynamics and economics. The methanol plant utilizes two distillation columns …

Updated Asabe Standard Manure Excretion Standard, Richard K. Koelsch

Department of Agricultural and Biological Systems Engineering: Presentations and White Papers

This newsletter introduces the new ASABE (American Society of Agricultural and Biological Engineers) Standard D384.2, Manure Production and Characteristics. This new standard provides an equation-based approach that integrates animal feeding program and performance into the final estimate of total solids, nitrogen, and phosphorus excretion for seven livestock and poultry species. This article reviews the opportunity this standard provides for improving accuracy of farm-specific nutrient management planning and introduces an educational opportunity for users to be introduced to new software for using the standard.

I propose to conduct one or more workshops on the standard and supporting software tool in June. …

Course Portfolio For Arch333/Cnst305: Building Environmental Technical Systems, Tim Wentz

UNL Faculty Course Portfolios

Due to the critical nature of team-based learning in this course, I propose to study the learning aspects of team-based learning, as I envision it in this course. Not having formally investigated this issue previously, I am left with a sense that some teams perform much better than other teams. I am looking for those criteria that separate the good teams from underperforming teams. Some of the issues that occur to me as I start this process include the following: - Team size - Academic diversity - Discipline diversity - Gender diversity - Geographic diversity How students best learn in …

Use Of A Modified Zirconia Support In The Separation Of Immunoproteins, Anuradha Subramanian, Sabyasachi Sarkar

Papers in Biotechnology

Zirconia beads (25–38 μm in diameter) were modified with N,N,N′,N′-ethylenediaminetetramethylenephosphonic acid to generate a zirconia based pseudoaffinity support, further referred to as r_PEZ. The influence of pH, salt concentration and temperature on the binding of human immunoglobulin G (hIgG) to r_PEZ was studied. Temperature had no significant impact on the maximum binding capacity (Qmax), and the equilibrium-binding constant (Kd), whereas pH and the salt concentration had a noticeable impact on both Qmax and Kd. The Qmax value of 55 mg hIgG/ml of bead was obtained at a pH of 5.5 and found to decrease with an increase of pH. The …

Comment On ‘‘Destructive Effect Of Disorder And Bias Voltage On Interface Resonance Transmission In Symmetric Tunnel Junctions’’, Julian P. Velev, Kirill D. Belashchenko, Evgeny Y. Tsymbal

Nebraska Center for Materials and Nanoscience: Faculty Publications

In a recent Letter Tusche et al. [1] showed that a complete and coherent FeO layer forms on both interfaces of a FejMgOjFe|001| magnetic tunnel junction (MTJ) when using oxygen-assisted growth. Their ab initio model for these MTJs predicted tunneling magnetoresistance (TMR) of several thousand percent due to the contribution from interface resonances (IRs) perfectly matched at the two interfaces. In this Comment, we show that in practice the predicted giant TMR is unfeasible because the IRs are mismatched by structural disorder and/or by applied bias voltage resulting in a moderate TMR.

A Comparative Study Of Monoclonal Antibodies (Mabs) Purified From Cell Culture Supernatant On Edtpa-Modified Zirconia Beads And Protein A-Hyper D Support, Anuradha Subramanian, Blanca Martinez, Jill Holm, Peter W. Carr, Clayton V. Mcneff

Papers in Biotechnology

Colloidal zirconia was spray dried to yield zirconia particles, which were further modified with N, N, N0, N0- Ethylenediamine tetra methylenephosphonic acid (EDTPA) to yield a sup-port for use in bioseparations. EDTPA modified zirconia particles will be further referred to as, r_PEZ. Cell culture supernatants rich in monoclonal antibody (Mab) subtypes IgG1, IgG2a, IgG2b, and IgG3 were chromatographed on a r_PEZ column, and on a protein A-hyper D col-umn that was purchased commercially. All Mab subtypes bound to r_PEZ and process yields in the range of 88 to 99% were obtained. The purity of the Mab products were ascertained by …

Risk Of Colon Cancer In Hereditary Non-Polyposis Colorectal Cancer Patients As Predicted By Fuzzy Modeling: Influence Of Smoking, Rhonda M. Brand, David D. Jones, Henry T. Lynch, Randall E. Brand, Patrice Watson, Ramesh Ashwathnayaran, Hemant K. Roy

Department of Agricultural and Biological Systems Engineering: Faculty Publications

AIM: To investigate whether a fuzzy logic model could predict colorectal cancer (CRC) risk engendered by smoking in hereditary non-polyposis colorectal cancer (HNPCC) patients.

METHODS: Three hundred and forty HNPCC mismatch repair (MMR) mutation carriers from the Creighton University Hereditary Cancer Institute Registry were selected for modeling. Age-dependent curves were generated to elucidate the joint effects between gene mutation (hMLH1 or hMSH2), gender, and smoking status on the probability of developing CRC.

RESULTS: Smoking significantly increased CRC risk in male hMSH2 mutation carriers (P < 0.05). hMLH1 mutations augmented CRC risk relative to hMSH2 mutation carriers for males (P < 0.05). Males had a significantly higher risk of CRC than females for hMLH1 non smokers (P < 0.05), hMLH1 smokers (P < 0.1) and hMSH2 smokers (P < 0.1). Smoking promoted CRC in a dose-dependent manner in hMSH2 in males (P < 0.05). Females with hMSH2 mutations and both sexes with the hMLH1 groups only demonstrated a smoking effect after an extensive smoking history (P < 0.05).

CONCLUSION: CRC promotion by smoking in HNPCC patients is dependent on gene mutation, gender and age. …

Acuta Enews March 2006, Vol. 35, No. 3

ACUTA Newsletters

In This lssue

From ACUTA Headquarters............ Jeri A. Semer, CAE, ACUTA Executive Director

Nominate for ACUTA Board of Directors

Tech Talk: Reputation Services Help Wage War on Spam................. Kevin Tanzlllo, Dux PR

Hunt for Unused Lines and Save.................. Mario Garcia, Cal State Dominguez Hills

lnfo Links................ Randy Hayes, Univ. of Northern lowa

ACUTA Audio Seminar: How to Negotiate a Cell-Site Leasing Agreement

Web Tip: Members Helping Members.............. Aaron Fuehrer, ACUTA lnformation Tech. Mgr.

Member Site to See

Board Report............ Riny Ledgerwood, Son Diego State Univ. ACUTA Sec./Treasurer

LambdaRail Completes Backbone

DC Update............... Whitney Johnson, Retired, No, Michigon Univ.

Welcome New …

Mitochondrial Dna Genome Sequencing And Snp Assay Development For Increased Power Of Discrimination, Thomas J. Parsons

United States Army: Publications

This report details the work performed over a period of five years in an NIJ-funded project intended primarily to develop a practical means for accessing the large reserve of genetic variation in the ~15,000 bp mtDNA coding region, as a means for augmenting the forensic discrimination provided by sequencing the hypervariable (HV) regions of the mtDNA control region. Our approach was to focus on the relatively small number of particularly common types present in US Caucasian, African American, and Hispanic populations, where the problem of limited discrimination is concentrated in practice. We sequenced 506 entire mtDNA genomes corresponding to 56 …

Intersection Safety, Aemal Khattak

Nebraska Department of Transportation: Research Reports

The objectives of this project included a study to determine the safety effects of intersection type (unsignalized, signalized, and interchange) on Nebraska expressway intersections, quantification of the safety effects of a Collision Countermeasure System (CCS), and update of the Nebraska Department of Roads (NDOR) expressway intersection guidelines. The CCS is an Intelligent Transportation Systems (ITS) traffic control device to warn drivers of conflicting cross-traffic at rural, non-signalized intersections. The goal was that if found effective, the CCS will become part of the intersection designer’s options for expressway intersection design (other options being an interchange, traffic signals, and traffic control signs). …

Restricted-Zone Requirements For Superpave Mixes Made With Local Aggregate Sources, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.

Effect Of Gravity On Methanol Diffusion Flames Burning Within A Forced Convective Environment, V. Raghavan, G. Gogos, V. Babu, T. Sundararajan

Combustion Research at University of Nebraska-Lincoln

Effect of Gravity on Methanol Diffusion Flames Burning within a Forced Convective Environment

Effects Of Forced Convection And Surface Tension During Methanol Droplet Convection,”, V. Raghavan, D. N. Pope, G. Gogos

Combustion Research at University of Nebraska-Lincoln

Effects of Forced Convection and Surface Tension during Methanol Droplet Convection,”

Numerical Simulation Of Fuel Droplet Extinction Due To Forced Convection,", D. N. Pope, G. Gogos

Combustion Research at University of Nebraska-Lincoln

Numerical Simulation of Fuel Droplet Extinction Due to Forced Convection,"

A New Multicomponent Diffusion Formulation For The Finite-Volume Method: Application To Convective Droplet Combustion, D. N. Pope, G. Gogos

Combustion Research at University of Nebraska-Lincoln

A New Multicomponent Diffusion Formulation for the Finite-Volume Method: Application to Convective Droplet Combustion

Combustion Of Moving Droplets And Suspended Droplets: Transient Numerical Results, D. N. Pope, D. Howard, K. Lu, G. Gogos

Combustion Research at University of Nebraska-Lincoln

Combustion of Moving Droplets and Suspended Droplets: Transient Numerical Results