Digital Commons Network^™

Effect Of Oxygen Derived Free Radicals And Glycine On Sodium-Potassium Adenosine Triphosphatase In The Basolateral Membrane Of The Kidney In Ischemia-Reperfusion, Faten A. Zakaria

Saudi Medical Journal

OBJECTIVE: The aim of the present study was to examine the effect of exposing rats to ischemia-reperfusion while breathing 100% oxygen or room air, to find the effect of glycine on renal sodium-potassium adenosine triphosphatase (Na+-K+ATPase) and endogenous antioxidant enzymes, superoxide dismutase and catalase, also to ascertain the effect of ischemia-reperfusion on renal nitric oxide and lipid peroxides. METHODS: This study was carried out at King Saud University, Riyadh, Kingdom of Saudi Arabia, over a period of 11 months, February to December 2001. All previous measurements were carried out on the renal homogenate after 60 minutes ischemia, then after reperfusion …

Hematological Changes In Cement Mill Workers, Sultan A. Meo, Muhammad A. Azeem, Shoukat A. Arian, Merza M. Subhan

Saudi Medical Journal

OBJECTIVE: Considering the hazards of exposure to cement dust, this study incorporated basic hematological parameters, erythrocyte sedimentation rate and the total leukocyte count. The idea was to identify a simple, readily available and cost effective screening test that could help in identifying the presence of disease, its severity, or both in cement mill workers potentially related to their work place. METHODS: This study was carried out in the Department of Physiology, Faculty of Health and Medical Sciences, Hamdard University, Karachi and the University of Karachi, Pakistan, during the time frame 1999-2000. In this study a group of 50, apparently healthy …

Coasting. A Viable Option For Patients At Risk Of Ovarian Hyperstimulation Syndrome, Amin H. Gafar, Zeinab M. Abotalib

Saudi Medical Journal

OBJECTIVE: To present our experience in 48 coasted patients and how they performed in terms of the number of eggs collected, numbers of embryos available for embryo transfer after in vitro fertilization, pregnant and on going pregnancy rate. METHODS: The study was conducted at Lister Hospital, London, United Kingdom, during the period October 1998 through to May 2001. For the purpose of the study, we selected coasted cycles in patients who were less than 38 years of age (n=48 patients). A control group of cycles consisted of all cycles during the same period in patients less than 38 years of …

Obstetric Performance Of A Patient With Multiple Uterine And Cervical Fibroids And Expectant Management Of Retained Placenta, Mahfuza H. Begum, Mohamed S. Mustafa

Saudi Medical Journal

The aim of this case report is to describe the obstetric performance of a patient with multiple uterine and supravaginal cervical fibroids. A 36-year-old, gravida 3 para 0+2 with multiple uterine and cervical fibroids presented with inevitable abortion at 17 weeks gestation. She had a spontaneous rupture of membranes followed by expulsion of fetus as breech with entrapment of aftercoming head by a cervical fibroid. Oxytocin infusion and digital traction were able to deliver the fetus. The placenta, however, was trapped in the fundal area and could not be delivered under general anesthesia because of mechanical obstruction by the fibroid. …

Acquired Reactive Perforating Collagenosis Associated With Sick Euthyroid Syndrome, Mohamad I. Fatani, Yousef M. Al-Ghamdi, Khalid A. Al-Afif, Magdy R. Abdulghani, Talal M. Karima

Saudi Medical Journal

Acquired reactive perforating collagenosis is a rare skin disorder associated with several systemic diseases, particularly diabetes and chronic renal failure. A 52-year-old Saudi female patient with a known case of diabetes mellitus type II, chronic renal impairment, hypertension, peripheral vascular disease, congestive heart failure, stroke and left hemiplegia presented with multiple pruritic skin eruption on the trunk and extremities. We believe that this is the first case of acquired reactive perforating collagenosis in association with sick euthyroid syndrome to be reported.

Are We Underestimating The Leukemogenic Risk Of Hydroxyurea, Ali H. Al-Jam’A, Ibrahim A. Al-Dabbous, Adil A. Al-Khatti, Folayan G. Esan

Saudi Medical Journal

Hydroxyurea is an established drug that has been used for the treatment of myeloproliferative disorders and some solid tumors for some time. In recent years it has also been found to be effective in the treatment of sickle cell disease. Short term side effects are not serious, and are manageable. The major concern is the potential leukemogenesis with long term use. The risk of leukemogenesis is not defined with its use in benign hematological conditions. We report a case of acute myeloid leukemia with no preceding myelodysplastic syndrome, occurring after 2 years of hydroxyurea therapy in a patient with sickle …

Prevalence And Clinical Usefulness Of Thyroid Antibodies In Different Diseases Of Thyroid, Faiza A. Qari

Saudi Medical Journal

No abstract provided.

Surgery And Postoperative Mebendazole In The Treatment Of Hydatid Disease, Abdul-Wahed N. Meshikhes

Saudi Medical Journal

No abstract provided.

Sleep Disturbance In Children And Adolescents With Disorders Of Development: Its Significance And Management, Abdullah Al-Hathoul

Saudi Medical Journal

No abstract provided.

Adolescent Risk Factors For Sexual Victimization: A Longitudinal Analysis Of Rural Women, Janine M. Zweig, Aline Sayer, Lisa J. Crockett, Judith R. Vicary

Department of Psychology: Faculty Publications

Longitudinal data were used to examine risk factors for sexual victimization among 237 young adult rural women. In this sample, 8% reported experiencing forced sex (i.e., physically violent experiences) and a separate 22% reported experiencing coerced sex (i.e., external psychological manipulation, substance-related coercion, or internal psychological pressure.) Women who had more educated mothers had a greater probability of reporting forced sex. In addition, mothers’ education moderated the relationship between individual risk factors and the probability of reporting forced sex. For women with less educated mothers, higher frequency of sexual activity during adolescence was related to an increased probability of reporting …

Afghanistan And The Future Of Warfare: Implications For Army And Defense Policy, Stephen D. Biddle Dr.

Books, Monographs & Collaborative Studies

America's novel use of special forces, precision weapons, and indigenous allies has attracted widespread attention since its debut in Northern Afghanistan last fall. It has proven both influential and controversial. Many think it caused the Taliban's sudden collapse. For them, this "Afghan Model" represents warfare's future, and should become the new template for US defense planning. Critics, however, see Afghanistan as an anomaly - a non-repeatable product of local conditions. This briefing examines the Afghan Model's actual role in the fall of the Taliban using evidence collected from a combination of 45 participant interviews, terrain inspection in Afghanistan, and written …

Associations Between Cardiorespiratory Fitness And C-Reactive Protein In Men, Timothy S. Church, Carolyn E. Barlow, Conrad P. Earnest, James B. Kampert, Elisa L. Priest, Steven N. Blair

Faculty Publications

Objective - This study examined the association between cardiorespiratory fitness and C-reactive protein (CRP), with adjustment for weight and within weight categories.

Methods and Results - We calculated median and adjusted geometric mean CRP levels, percentages of individuals with an elevated CRP (≥2.00 mg/L), and odds ratios of elevated CRP across 5 levels of cardiorespiratory fitness for 722 men. CRP values were adjusted for age, body mass index, vitamin use, statin medication use, aspirin use, the presence of inflammatory disease, cardiovascular disease, and diabetes, and smoking habit. We found an inverse association of CRP across fitness levels (P for …

Tmdls: Statistical Correlations Or Mechanistic Modeling?, Scott A. Wells, Thomas M. Cole

Civil and Environmental Engineering Faculty Publications and Presentations

In developing TMDL waste-load allocations for the Snake River-Reservoir system in Western Idaho and Eastern Oregon, determinations of the assimilative capacity of the system and the impact of pollutant reduction strategies has been performed using both a statistical-correlation approach and a mechanistic modeling approach. The system included the Lower Snake River, Brownlee Reservoir, Oxbow Reservoir, and Hells Canyon Reservoir with the focus was on Brownlee Reservoir.

The statistical approach used on Brownlee Reservoir divided the system into riverine and lacustrine zones. Field data were then averaged over season and location to provide statistical correlations, such as between total phosphorus (TP) …

Heat Transfer, Pressure Drop, And Dissolved Gas Effect During Flow Boiling In Microchannels, Mark Steinke

Theses

Microchannels are being considered in many advanced heat transfer applications, including automotive, fuel cells, and electronics cooling. However, there are a number of fundamental issues still unresolved with respect to heat transfer and fluid mechanics perspective. An experimental investigation of the heat transfer, pressure drop, and flow patterns during flow boiling in microchannels is performed. Six parallel microchannels with a mean hydraulic diameter of 207 micron are manufactured and tested. Flow patterns have been observed in the channels under diabatic conditions. Observations suggest that the conventional flow patterns also occur in microchannels, however, the Reynolds number range is significantly lower …

Random Graph Process Models For Angiogenesis, Louis V. Quintas, Eric M. Wahl

CSIS Technical Reports

No abstract provided.

Motion-Based Video Representation For Scene Change Detection, Chong-Wah Ngo, Ting-Chuen Pong, Hong-Jiang Zhang

Research Collection School Of Computing and Information Systems

In this paper, we present a new framework to automatically group similar shots into one scene, where a scene is generally referred to as a group of shots taken place in the same site. Two major components in this framework are based on the motion characterization and background segmentation. The former component leads to an effective video representation scheme by adaptively selecting and forming keyframes. The later is considered novel in that background reconstruction is incorporated into the detection of scene change. These two components, combined with the color histogram intersection, establish our basic concept on assessing the similarity of …

Knowledge Discovery From Texts: A Concept Frame Graph Approach, Kanagasabai Rajaraman, Ah-Hwee Tan

Research Collection School Of Computing and Information Systems

We address the text content mining problem through a concept based framework by constructing a conceptual knowledge base and discovering knowledge therefrom. Defining a novel representation called the Concept Frame Graph (CFG), we propose a learning algorithm for constructing a CFG knowledge base from text documents. An interactive concept map visualization technique is presented for user-guided knowledge discovery from the knowledge base. Through experimental studies on real life documents, we observe that the proposed approach is promising for mining deeper knowledge.

Mining Of Correlated Rules In Genome Sequences, L. Lin, L. Wong, Tze-Yun Leong, P. S. Lai

Research Collection School Of Computing and Information Systems

With the huge amount of data collected by scientists in the molecular genetics community in recent years, there exists a need to develop some novel algorithms based on existing data mining techniques to discover useful information from genome databases. We propose an algorithm that integrates the statistical method, association rule mining, and classification rule mining in the discovery of allelic combinations of genes that are peculiar to certain phenotypes of diseased patients.

Defending Against Redirect Attacks In Mobile Ip, Robert H. Deng, Jianying Zhou, Feng Bao

Research Collection School Of Computing and Information Systems

The route optimization operation in Mobile IP Version 6 (MIPv6) allows direct routing from any correspondent node to any mobile node and thus eliminates the problem of "triangle routing" present in the base Mobile IP Version 4 (MIPv4) protocol. Route optimization, however, requires that a mobile node constantly inform its correspondent nodes about its new care-of addresses by sending them binding update messages. Unauthenticated or malicious binding updates open the door for intruders to perform redirect attacks, i.e., malicious acts which redirect traffic from correspondent nodes to locations chosen by intruders. How to protect binding update messages to defend against …

Lay Theories And Evaluation-Based Organization Of Impressions: An Application Of The Memory Search Paradigm, Yuk-Yue Tong, Chi-Yue Chiu

Research Collection School of Social Sciences

People may believe that personal attributes are fixed entities that cannot be changed (hold an entity theory). Alternatively, they may believe that qualities of a person are malleable (hold an incremental theory). In the present research, the authors used Sternberg's (1966) memory search task to examine entity and incremental theorists' cognitive strategies in memory search. It was hypothesized that entity theorists, who have a greater tendency to make spontaneous evaluation of people, would organize impressions in short-term memory according to whether the stimulus persons are positively or negatively evaluated. Next, they might compare the probe only to the stimulus persons …

On Nonexistence Of Magnetic Charge In Pure Yang-Mills Theories, Alex Kovner, Martin J. Lavelle, David Mcmullan

School of Engineering, Computing and Mathematics

No abstract provided.

Predicting Bottleneck Bandwidth Sharing By Generalized Tcp Flows, Archan Misra, Teunis Ott, John Baras

Research Collection School Of Computing and Information Systems

The paper presents a technique for computing the individual throughputs and the average queue occupancy when multiple TCP connections share a single bottleneck buffer. The bottleneck buffer is assumed to perform congestion feedback via randomized packet marking or drops. We first present a fixed point-based analytical technique to compute the mean congestion window sizes, the mean queue occupancy and the individual throughputs when the TCP flows perform idealized congestion avoidance. We subsequently extend the technique to analyze the case where TCP flows perform generalized congestion avoidance and demonstrate the use of this technique under the Assured Service model, where each …

The Capacity Of Multi-Hop Wireless Networks With Tcp Regulated Traffic, Sorav Bansal, Rajeev Shorey, Shobhit Chugh, Anurag Goel, Kapil Kumar, Archan Misra

Research Collection School Of Computing and Information Systems

We study the dependence of the capacity of multi-hop wireless networks on the transmission range of nodes in the network with TCP regulated traffic. Specifically, we examine the sensitivity of the capacity to the speed of the nodes and the number of TCP connections in an ad hoc network. By incorporating the notion of a minimal acceptable QoS metric (loss) for an individual session, we argue that the QoS-aware capacity is a more accurate model of the TCP-centric capacity of an ad-hoc network. We study the dependence of capacity on the source application (Telnet or FTP) and on the choice …

A Visual Tool For Building Logical Data Models Of Websites, Zehua Liu, Wee-Keong Ng, Feifei Li, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Information sources over the WWW contain a large amount of data organized according to different interests and values. Thus, it is important that facilities are there to enable users to extract information of interest in a simple and effective manner. To do this, We propose the Wiccap Data Model, an XML data model that maps Web information sources into commonly perceived logical models, so that information can be extracted automatically according to users' interests. To accelerate the creation of data models, we have implemented a visual tool, called the Mapping Wizard, to facilitate and automate the process of producing Wiccap …

Web Classification Using Support Vector Machine, Aixin Sun, Ee Peng Lim

Research Collection School Of Computing and Information Systems

In web classification, web pages from one or more web sites are assigned to pre-defined categories according to their content. Since web pages are more than just plain text documents, web classification methods have to consider using other context features of web pages, such as hyperlinks and HTML tags. In this paper, we propose the use of Support Vector Machine (SVM) classifiers to classify web pages using both their text and context feature sets. We have experimented our web classification method on the WebKB data set. Compared with earlier Foil-Pilfs method on the same data set, our method has been …

Don’T Isolate E-Business From The Marketing Communication Curriculum, James Pokrywczynski

College of Communication Faculty Research and Publications

No abstract provided.

Designed Physical Environments As Related To Selves, Symbols, And Social Reality: A Proposal For A Humanistic Paradigm Shift For Architecture, Ronald Smith, Valerie Bugni

Sociology Faculty Research

In this paper we will begin by briefly describing the concept of self, proceed by discussing the symbolic significance of physical environment, then describe as well as propose a humanist paradigm which we believe should be employed in architectural theory and practice, and finally discuss how the shift to a humanistic paradigm might be accomplished.

The Library As Laboratory, Patricia A. Iannuzzi, Diane Harvey

Library Faculty Presentations

Overview of Issues:

— Improving the Quality of Undergraduate Research

- Working with students and faculty
- Curricular and Extracurricular models

— Advancing the Undergraduate Research Agenda on Campus

- strategies
- partners
- projects

Corrosion Of Steel By Lead Bismuth Eutectic: Quarterly Report August September October 2002, John Farley

Transmutation Sciences Materials (TRP)

We continued with sputter depth profiling of 316 and 316L steel samples that have been exposed to LBE. We also calibrated the sputter depth profiling using a sample of SiO₂ on Si, and the SEM. This is a valuable independent determination of the thickness of oxide layers.

In the laboratory, progress continues using the XPS machine. Experiments have been performed on steel samples using Argon ions to mill away the surface of the sample, thereby making measurements as a function of depth. This "ion beam milling" proceeds slowly through the oxide layer that covers the steel sample. We are …

Inside Unlv, Diane Russell, Mae Worthey-Flennoy, Cate Weeks, Gian Galassi

Inside UNLV

No abstract provided.