Digital Commons Network^™

Evaluation Of Drug Delivery Systems By Electron Microscopy Techniques, Y. V. Pathak, V. D. Labhashetwar

Cells and Materials

This review covers the applications of electron microscopic techniques to the characterization and evaluation of drug delivery systems. Various electron microscopic (EM) related techniques such as transmission electron microscopy, scanning electron microscopy (SEM), SEM with energy dispersive X-ray microanalysis, and freeze-fracture electron microscopy are extensively used for this purpose. Microcapsules, microspheres, nanocapsules, liposomes , polymeric carriers and other drug delivery systems are characterized using EM related techniques for their surface topography, size and shape analysis, biodegradation, in vitro - in vivo evaluation and drug excipient interactions and characterization. Electron microscopy methods are very useful in understanding the mechanism of drug …

Soil Sampling Made Easier, Mike Bolland, Mike Baker

Journal of the Department of Agriculture, Western Australia, Series 4

A new rotary blade soil sampler has taken the hard work out of collecting soil samples from Western Australia's hard-setting soils to test for soil phosphorus levels .

Conceived and developed by Department of Agriculture technical officer Mike Baker, it should enable soil testing to be more widely adopted. Fortunately, the soil calibration tests that were developed using pogo samples can also be used for the new sampler.

In Vitro Studies Of Encrustations On Catheters, A Model Of Infection Stone Formation, W. Schmitz, A. Nolde, G. Marklein, A. Hesse

Cells and Materials

Deposition of infection-induced stone material on urinary catheters is a common problem in urological patients. Therefore, a crystallization model was developed in order to form this material in a reproducible manner. Furthermore, the dissolving potency of two solutions (Suby-G® and Solution-R®) was investigated with this model. The encrustations were examined by infrared (IR) spectroscopy, chemical encrustation analysis , scanning electron microscopy (SEM) and X-ray microanalysis. In addition, the encrustations were calculated from the results of the urine analysis, before and after each experiment, as contents remaining in each artificial bladder. The model conditions changed during the experiment and led to …

Industrial Agricultural Products Center Review 1993

Industrial Agricultural Products Center: Publications and Information

Significant progress has been made toward the goals of the Center. Activities have centered on the identification of opportunities in terms of new industrial uses of agricultural commodities. Assistance has been provided to UNL faculty to procure funding research in the respective areas. In other cases, specific faculty positions have been identified. Subsequent hirings have built a strong group of faculty affiliates.

The main emphasis in the Center has been research on developing new processes and products. A fairly comprehensive list of projects funded and the faculty involved are listed in a subsequent section. Two strategic planning sessions have been …

Phosphorus Accumulation In Bottom Sediments Of Retention/Detention Ponds, Kriss Young Kaye

Retrospective Theses and Dissertations

Laboratory and field studies were conducted to characterize phosphorus in bottom sediments for retention/detention ponds. The laboratory studies, including batch and column experiments, were conducted to assess possible removal processes. Sediment core samples were collected from detention ponds receiving urban runoff. These cores were analyzed for phosphorus at different layers including accumulated top sediments and the lower parent soil beneath it at a depth of 1, 3, 5, 10 and greater than 10 cm. The phosphorus accumulation rate was found to decline with calculated overflow rates from an average storm. Also attenuation of phosphorus with sediment depth followed an exponential …

Impulse, Cindy Maisch, Cindy Price, Nichole Nymoen, Lois Hatton, Julianne Trautmann

Impulse (Jerome J. Lohr College of Engineering Publication)

FEATURES
[Page 2] College of Engineering expands outreach programs
[Page 5] First Sioux Falls EET grad assumes advising role
[Page 5] Engineering students run Karate for Kids
[Page 6] New SWE chapter accepted 'like seeds on fertile ground'
[Page 8] SDSU Chapter of AISES reaches out
Empi expansion boosts Clear Lake's economy, employment inside back cover

Departments:
Students:
[Page 9] Engineering Exploration Days to include Inventors Congress April 22-23
[Page 10] Phonathon set for Feb. 15-20
[Page 11] Students intern with Zytec
[Page 11] Engineering students program Shanghai message center
[Page 11] Computer science major competes for Miss Rodeo America …

Relative Humidity And Temperature Effects On Tensile Strength Of Edible Protein And Cellulose Ether Films, A. Gennadios, H. J. Park, Curtis L. Weller

Department of Agricultural and Biological Systems Engineering: Faculty Publications

The effect of relative humidity and temperature on tensile strength of two types of protein-based [corn zein (CZ) and wheat gluten (WG)] and two types of cellulosic [methylcellulose (MC) and hydroxypropyl cellulose (HPC)] hydrophilic edible films was investigated.

Property Modification Of Edible Wheat, Gluten-Based Films, A. Gennadios, Curtis L. Weller, R. F. Testin

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Procedures were developed to produce edible wheat, gluten-based films. A film was produced as a standard. Five additional films were then produced by modifying the initial film-forming solution. Modifications included changing the plasticizer, partially substituting wheat gluten with soy protein isolate and corn zein, and incorporating two acetylated monoglyceride products. All films were characterized by measuring selected mechanical properties, and permeabilities to water vapor and to oxygen. Comparison of the films, in terms of their measured properties, indicates ways to improve the overall performance of the standard film as a potential packaging material. A main limitation of all of the …

Mathematical Model And Simulation Of The Progression Of Cutaneous T-Cell Lymphoma, Maria L. Agostinho

Theses

A simple mathematical model and simulation of the progression of cancer with particular emphasis on Cutaneous T Cell Lymphoma was investigated. The mathematical model consists of a set of differential equations that first satisfies the homeostasis levels of the different components present and second predicts the dynamics during a diseased or unhealthy condition. The simulation was done using a FORTRAN program for integrating the differential equations.

Simulation of the immune system is important in evaluating the usefulness of particular sorts of biologically targeted therapies and in selecting the most promising treatment strategies for clinical trials. In particular, the effects of …

A Technical And Practical Study Of Composting As A Solid Waste Management Alternative For The Air Force, Donald R. Abrams, Timothy D. Brecheen

Theses and Dissertations

This thesis reviews composting as a solid waste management option for the Air Force. The Air Force's Pollution Prevention Program Mandates composting as an opportunity to reduce landfill disposal and save future environmental costs. This research considers composting technologies used in mixed municipal solid waste and yard waste applications. The thesis presents technical aspects of composting and also summarizes operational techniques of successful composting sites across the United States. Composting is a biological process for converting organic waste into a stable product for use as a soil amendment or mulch. The Air Force should immediately begin yard waste composting programs …

Impulse, Cindy Price, Julianne Trautmann, Steve Poessnecker

Impulse (Jerome J. Lohr College of Engineering Publication)

Features:
[Page 2] InterActive, a multimedia leader with plans to grow
[Page 4] SDSU/lnterActive link producing new voice command system
[Page 5] South Dakota climate nurtures life
[Page 7] Dakota Mobile Hydraulics continues to expand
[Page 8] Special Teams president puts SDSU minor to good use
[Page 10] Eleanor Baum: challenges for women in engineering
[Page 12] Crossman, Borhard named 1992 Distinguished Engineers
[Page 13] 1992 Engineering Exploration Days includes inventors' congress
Departments:
Faculty:
[Page 14] SDSU chosen for NASA JOVE project
[Page 16] Retiring professor to run for legislature, finish book on family history
[Page 17] University/Industry Technology Service …

Optimization Of Cryopreservation Protocols For Cardiovascular Tissue, Jianfei Hu

Theses and Dissertations in Biomedical Sciences

The purpose of this research was to determine the effects of cryopreservation on the physical, biochemical and cellular aspects of heart valve tissue. The present study demonstrated that radiolabeled proline accumulation provides a quantitative estimate of total cellular metabolic viability. Radiolabeled inulin was demonstrated to be a useful marker for extracellular tissue space. Assessment of metabolic viability of the cellular population of leaflet tissue as a function of procurement and processing revealed that proline accumulation declined with increasing warm and cold ischemic times. Amphotericin B and streptomycin were toxic to the cells. Cefoxitin, lincomycin, polymyxin B, vancomycin and penicillin had …

Clinical Applications Of Recombinant Gene Technology: Bone And Cartilage Repair, Thomas A. Einhorn

Cells and Materials

Over the past decade, the field of molecular biology has given rise to the development of the applied discipline of molecular medicine. Based on recent developments using recombinant gene technology, genetic mapping analysis and other investigational tools, the physician and surgeon is now ready to begin using those instruments in the diagnosis and treatment of musculoskeletal disease. This article reviews the history of scientific exploration in recombinant gene technology as it applies to bone and cartilage repair. Clinical cases are presented to show how the fruits of scientific knowledge may be brought to bear on some of the more challenging …

Bioengineering For Water Cleanup: State-Of-The-Art Assessment, Judith L. Sims, Ronald C. Sims, Jon S. Ginn

Reports

No abstract provided.

Temperature Regulation Post Hemorrhagic Shock In Rats : Atheoretical Analysis, Kahambwe Shungu

Theses

The adequacy of a mathematical model in simulating temperature regulation in rats after resuscitation from hemorrhagic shock is investigated. This model, proposed elsewhere, was devised to study temperature profiles during hyperthermia in humans.

Hemorrhagic shock was achieved by bleeding rats to an average mean arterial pressure (MAP) of 30mmHg. The rats were then maintained at this MAP for up to four hours by withdrawing or reinfusing the shed blood. One group (the control group), was allowed to return to normal body temperature after the shock episode without external intervention. A second group (microwave group) was irradiated, for an average of …

A Biomechanical Analysis Of Three Humeral Fracture Fixation Systems, Alina Michelle Waite

Theses

Often, humeral fractures requiring internal fixation can be a challenging orthopaedic procedure. Each method of treatment possesses clinical and biomechanical advantages and disadvantages. Rigid plate fixation is highly successful in treating a large variety of long bone fractures. Nevertheless, excessive soft tissue dissection is necessary, and vascular and neural anatomy of the humerus can make plate application and removal difficult. An intramedullary nail offers a relatively simple procedure, thereby reducing these anatomical concerns. However, rotational instability at the fracture site is a common complication with a conventional intramedullary nail. Thus, a study was conducted to evaluate a new interlocking intramedullary …

Impulse, Carrie Sword, Carey Crouse, Ross Berndt, Steve Poessnecker

Impulse (Jerome J. Lohr College of Engineering Publication)

Features:
[Page 2] Water research: Saving for a 'dry day'
[Page 4] Regional water center enjoys benefits of Brookings
[Page 5] Feed Jake'
[Page 6] SDSU honors distinguished engineers
[Page 8] Scholarships awarded at annual banquet
[Page 10] New South Dakota businesses proposed by SDSU students

Departments:
Faculty:
[Page 11] Transportation technology service receives funding
[Page 11] Wayne Knabach honored
[Page 12] Faculty and students attendance at Dalton.
[Page 12] Conference focuses on women, minorities
[Page 13] Professors receive doctorates
[Page 13] Fulbright Scholar
[Page 14] Two retire from College of Engineering faculty
[Page 14] Former dean of engineering dies …

Acuta Enews June 1991, Vol. 20, No. 6

ACUTA Newsletters

In This Issue

Panel to focus on fraud

Interactive video bandwidth

Aggregator requirements

Telex can still be useful

Penn State still pioneering

Positions availabe

The Calendar - April 1991, Nova University

The Calendar

No abstract provided.

A Computer Simulation Model Of Waterhyacinth And Weevil Interactions, Kunter S. Akbay, F. G. Howell, J. W. Wooten

Mechanical Engineering Faculty Research and Publications

A personal computer simulation model termed "INSECT" has been developed to evaluate biological control of waterhyacinth (Eichhornia crassipes (Mart.) Solms.) by two species of weevil (Neochetina eichhorniae Warner, and N. bruchi Hustache). The model results were compared with the data from three different locations. For each data set, the simulated plant biomass, adult and larva populations were plotted against the 95% confidence intervals of the actual field observations. In many cases, the simulation results were within the 95% confidence intervals, and especially during the growing season, they indicated trends similar to those seen in the field data. However, there were …

Lake Mead Nutrient Enhancement Project, Peter D. Vaux, Larry J. Paulson, Nevada Department Of Wildlife, National Oceanic And Atmospheric Administration

Publications (WR)

The Lake Mead Fertilization Project is a research program designed to investigate the potential for using large-scale artificial fertilization to enhance the game fisheries of this reservoir through an increase in the population of threadfin shad, the system's primary forage species. A substantial decline in the population of largemouth bass, together with poor condition of adult striped bass, are the two major issues affecting the Lake Mead game fisheries. Both issues have been hypothesized to be a result of an inadequate amount of forage in the reservoir. Previous studies have in turn suggested that a major factor limiting the shad …

Application Of Fuzzy Set Technique To Agricultural Planning, S Kumar, Narasingh Misra, B C Ghosh

IIMB Management Review

In India, agriculture remains the dominant sector of economic activity with 74 percent work force depending on it. But the share of income from agriculture sector is less than the employment in it. Also the menace of unemployment and food requirement is increasing with growing population. Hence , there is a great need for increasing production and net profit levels on one hand and employment generation on the other. Irrigation planning plays an .mportant role in increasing agricultural production, net benefit, employment generation etc. as only 32 percent of the total cultivated area is irrigated in our country. Irrigation Planning …

Study Of Essential Factors Affecting The Efficiency Of Sludge Digestion, I-Chang Tsao

Theses

The sludge produced by wastewater treatment plant has some major characteristics such as high COD ( 52093 mg/1 - 79683 mg/1) and VS ( 19247 mg/1 - 44178 mg/1). The present laboratory investigation has indicated that successful treatment and purification of the subject of sludge is possible using multiple-stage anaerobic digestion system.

The multiple-stage system is capable of degrading 40-55% of COD and 50 to 60% of VS. The conventional digestion system degrades 30-45% of COD and 40-50% of VS. After treated by conventional system and multiple-stage system, the concentration of COD and VS are still high (21200 mg/1 - …

Treatment Of Trucking Station Wastewater By Two-Phase Anaerobic Digestion System And Rotating Biological Contactor, Tzu-Wen Uen

Theses

The wastewater produced as a result of trucking station activities has some major characteristics such as high COD (26,880 mg/1-42,925 mg/1) and BOD (12,278 mg/1-7,265 mg/1), high COD to BOD ratio (3.49-3.69), high pH range (3.72-11.7), and high grease content (480 mg/1-1,960 mg/1). Therefore, prior to any treatment, it is important to provide some sort of pre-treatment for pH adjustment and grease/oil removal.

The present laboratory investigation has indicated that successful treatment and purification of the subject wastewater is possible using two-phase anaerobic digestion system followed by rotating biological contactor. More than 90% of both COD and BOD was removed …

Santa Clara Magazine, Volume 32 Number 2, Winter 1990, Santa Clara University

Santa Clara Magazine

12 - WHO TAKES CARE OF THE KIDS Day care is one of the major issues society will be forced to grapple with in the 1990s. By Susan Frey

17 - THE GENERAL PAYS A VISIT The superior general of the Jesuit order makes a rare visit to Santa Clara and addresses the SCU and Bellarmine communities. By Peter-Hans Kolvenbach, S.J.

22 - PASSPORT TO FRIENDSHIP A Nome, Alaska Cub Scout troop makes the ultimate field trip, an exchange visit with the Young Pioneers in Provideniya, Russia. By Claire Murphy

26 - WHO, ME? Hazelden is considered the nation's premier …

Free Radicals And The Etiology Of Colon Cancer, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This hypothesis paper reviews diverse evidence suggesting that intracolonic production of oxygen radicals may play a role in carcinogenesis. The hypothesis began to evolve when the author made the chance discovery that 1/10,000 dilutions of feces generated detectable quantities of highly reactive hydroxyl radicals (HO). The rate of HO formation, detected using DMSO as a molecular probe, was quite remarkable, corresponding to that which would be produced by over 10,000 rads of gamma irradiation per day, absorbed in the periphery of the fecal mass adjacent to the mucosa. The relatively high concentrations of iron in feces, together with the ability …

Santa Clara Magazine, Volume 32 Number 1, Fall 1989, Santa Clara University

Santa Clara Magazine

10 - A TIME TO DIE? The debate over euthanasia changes and grows more interesting as we grow older and live longer. By Julie Sly

15 - LOOKING FOR LIFE IN SPACE SCU's scientist-in-residence talks about how resumption of planetary probe aids his origin of life research. By Maureen Mclnaney

20 - MEMORIES - THE WAY WE WERE A 1939 alumnus tells what Santa Clara was like 50 years ago and offers vignettes of Jesuits he remembers. By Norman Bayley

24 - EASTSIDE PROJECT Students and faculty are involved in this special partnership between SCU and East San Jose communities. …

On The Orders Of Magnitude Of Epigenic Dynamics And Monoclonal Antibody Production, Joanne M. Savinell (Belovich), Gyun Min Lee, Bernhard O. Palsson

Chemical & Biomedical Engineering Faculty Publications

The hybridoma cell's maximum capacity for monoclonal antibody (MAb) production is estimated to be 2300–8000 MAb molecules/cell/s, using measured rates of transcription and translation, and the limitations imposed by the size of the polymerase molecule and the ribosome. Nearly all the production rates reported in the literature fall into or below this range of production rates. Data from batch cultures of hybridomas demonstrate a constant specific rate of MAb production until the time integral of the viable cell concentration reaches about 10⁸ cells · h/cm³. At this point, some essential nutrients from the standard media …

A Dss For Animal Nutrition Planning, Krishna Prasad, M R Gopalan, S Sridhar

IIMB Management Review

In recent years, after the much acclaimed success of the Green
Revolution, the nation’s planners are coming to realize that it is not adequate for
the nation to have enough to eat, it is also important to have quality food. There
has, therefore, recently been a new emphasis on industries such as dairy and
poultry. It has been realized that there is a need to harness India’s enormous
animal resources. (There are, by one estimate, some 480 million livestock in the
country, including about 230 million cattle and 136 million poultry). Significant
improvements in the productivity of livestock can be …

Variations Of Alkalinity, Ph, Oxidation Reduction Potential, And Conductivity In Single And Multi-Stage Sludge Digestion Systems, Nasser M. Kamazani

Theses

Anaerobic digestion is used at many municipal and industrial wastewater treatment plants. Recent increase in the cost of energy and search for an alternative source of energy for the future have prompted renewed interest in anaerobic digestion for energy recovery by production of methane from waste materials, including wastewater sludges and agricultural and municipal solid wastes. Accordingly, a large literature exist on the subject, most of it dealing with more physical aspects of different process design. Little or not enough attention has been paid to its highly complex biochemical characteristics.

The purpose of this study is a preliminary investigation regarding …