Digital Commons Network^™

Modeling And Control Of Vinyl Chloride In Drinking Water Distribution Systems, Michael Beardsley, Craig D. Adams

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In water distribution systems containing PVC pipe manufactured in the "early era" (prior to 1977), vinyl chloride can leach into drinking water resulting in vinyl chloride concentrations exceeding the 2 μg·L-1 maximum contaminant level. Field testing of dead-end segments of water distribution systems consisting of early-era PVC pipe was conducted to examine their initial intrapipe vinyl chloride monomer (VCM) concentrations based on a Fickian-diffusion-Based leaching model. the experiments showed a wide range of VCM concentrations within early-era PVC pipe ranging from less than 50 to more than 600 mg·kg-1. based on the diffusion modeling approach, a protocol was designed that …

The Estimation And Control Of A Laboratory Heating And Ventilation System, Robin P. Mooney

Masters in Advanced Engineering

This dissertation is concerned with the estimation and control of a laboratory heating and ventilation system (Instrutek VVS-400). The system is a 2x2 multi-input multi-output process (MIMO). It has been shown that simple techniques such as the ultimate cycle method do not provide adequate control of the process. The system was interfaced with a PC using Matlab/Simulink via a data acquisition package (Humusoft). Continuous time process identification techniques were applied to the flow and temperature processes. The alternative tangent and point method was used to model the processes, and their interaction, using a first order lag plus delay model. Models …

My Heart, Laura Clark

A Midwestern Review: A Magazine of the Arts and Issues at DePauw University

Laura Clark is a senior English Writing major from Greencastle, Indiana. She plans to pursue a career in publishing.

Maximizing The Student Teaching Experience: Cooperating Teachers Share Strategies For Success, Donna R. Sanderson

Essays in Education

This article critically examines the results of a survey completed by fifty-seven cooperating teachers from nine different school districts in the greater Philadelphia area. All of the cooperating teachers had welcomed elementary education student teachers into their classrooms. Strategies used to help alleviate student teachers’ fears and concerns related to their student teaching experience are shared and explored. Findings suggest that teachers use a multitude of strategies to calm their student teachers and set them up for a successful student teaching semester. Cooperating teachers detailed the tasks needed to be accomplished BEFORE the beginning of the student teaching semester to …

What Is Your Diagnosis?, Pranee Tuntivanich

The Thai Journal of Veterinary Medicine

No abstract provided.

The Detection Of Oestrus : A Key Role In Enhancing Mating Efficiency In Pigs, Padet Tummaruk

The Thai Journal of Veterinary Medicine

This review focuses on oestrous detection, which is a vital factor for mating efficiency in pigs. The content includes information concerning the timing of ovulation, in relation to oestrous behavior, follicular growth and hormonal changes before and during oestrus. Also the factors affecting the oestrous interval, the importance of boar contact, oestrus detection in gilts and the diagnosis and treatment of anoestrus and/or ovarian dysfunction in sows.

The Epididymal Sperm Survival Interval Following Orchidectomy In Dogs, Sudson Sirivaidyapong, Theerawat Swangchan-Uthai

The Thai Journal of Veterinary Medicine

The aim of the study was to investigate the motility and viability of canine epididymal spermatozoa, collected from the epididymides following orchidectomy (castration), over a period of time. Sperm samples were collected at 25-28oC from the caudal epididymis, 0, 1, 3, 6, and 12 hours, after the castration of 75 fertile dogs (1-10 years old). Progressive motility and viability of the epididymal sperm decreased over a period of time, after the collection. The epididymal sperm motility was 82.3±6, 76.3±8, 72.0±7, 60.3±9, and 22.7±20% while the percentage of viable spermatozoa was 85.5±5, 78.8±7, 77.5±7, 64.4±7, and 27.1±21 at 0, 1, 3, …

The Efficacy Of Ivermectin (Ivomec®) Against Gastrointestinal Nematodes Of Sheep In Thailand, Vanni Chaisanabunthid, Kanchana Kengkoom, Wantanee Ratanasak, Darunee Buripakdi Lawson

The Thai Journal of Veterinary Medicine

Rectal, faecal samples from 14 sheep were collected 3 times a day (morning, noon and evening) and examined for nematode eggs by the formalin-ether, sedimentation technique and the Brine floatation technique. The faecal egg counts were done by using the Stoll’s dilution, egg counting technique. The sheep were injected with ivermectin (Ivomec®) (0.2 mg/kg) subcutaneously. Three weeks later, faecal samples were collected and examined to determine the outcome of the treatment. It was found that strongyles and Trichuris ovis eggs were absent. It was concluded that Ivomec® showed good efficacy for the treatment of some gastrointestinal nematodes in this study …

The Relationship Between Pathological Gastric Changes And Helicobacter Spp. In Dogs, Nopadon Pirarat, Thepsirin Makbunsri, Sirichoke Sukkamon, Suchada Amornchailertrat, Anudep Rungsipipat, Boonmee Sunyasootcharee

The Thai Journal of Veterinary Medicine

A study of canine, gastric, Helicobacter spp. infection was performed. A total of 56 biopsied samples of cardia, fundus, body and pyloric antrum, submitted to the Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, during October, 2001 to 2002, were investigated. The objective of this study was to detect Helicobacter spp. infections in the stomach of dogs and to confirm any relationship between the histopathological changes in the stomach with the presence of bacteria. The histopathological results revealed inflammatory cell infiltration 100%(56/56), crypt distortion 69.64%(39/56), lymphoid follicular formation 67.86% (38/56) and epithelial degeneration 28.57%(16/56). The presence of Helicobacter spp. …

Serum Bone-Specific Alkaline Phosphatase Of Dogs With Various Bone Condition, Warapat Prachasilpchai, Tapmanus Bupha-Intr, Marissak Kalpravidh, Meena Sarikaputi, Sumit Durongphongtorn

The Thai Journal of Veterinary Medicine

Serum total and bone alkaline phosphatase (TAP and BAP) including Ca and P were measured in 6 dogs with osteoporotic bone and 10 dogs with less than a week fracture presented to the Small Animal Hospital, Faculty of Veterinary Science, Chulalongkorn University. The serum chemistry and ulnar radiographs were evaluated in plaster casting 9 normal experimental dogs before and after ulnar osteotomy on weeks 1, 2, 4, 6, 8, 10, 12, 14 and 16, postoperation. The 9 normal experiment dogs had the average (±SE) of 97.7(±19.1) U/L TAP, 23.3(±21.4) U/L BAP, 9.6(±0.4) U/L Ca and 5.4(±0.3) U/L P. Serum TAP, …

The Effect Of Chronic Heat Stress On The Urinary System Pathology Of Broilers, Worapol Aengwanich, Suchint Simaraks

The Thai Journal of Veterinary Medicine

Thirty six, one day old broiler chicks were obtained from a commercial hatchery. They were brooded for 20 days before being placed in layer cages, with a wire floor, at 26-28oC, for a 7 day adaptation period. On day 28, the broilers were transferred into environmentally controlled housing, at 26-28oC, and were subjected to heat stress for 5 hrs, at a temperature of 33±1oC, each day, for 21 days. Fifteen birds were then randomly killed by cervical dislocation for macroscopic and microscopic examination of the urinary system. The results revealed that the ureters in 9 out of 15 broilers showed …

Ecg Quiz, Chollada Buranakarl, Kris Angkanaporn, Suwanakiet Sawangkoon

The Thai Journal of Veterinary Medicine

No abstract provided.

The Role Of United Charities In Fundraising: The Case Of Singapore, Vincent Chua, Chung Ming Wong

Research Collection School Of Economics

Theory suggests that a united charity helps to economize on fundraising costs by reducing competition for donations among member charities. However, donors often cannot control the allocation of their donations, and charities may dislike the monitoring of their activities. This paper examines these and other issues relating to the Community Chest of Singapore. The results, based on analysis of financial positions and fundraising costs of a large number of charities, suggest that the Community Chest does possess important fundraising advantages. Thus charities in financial difficulties or in need of funds for additional programs tend to seek membership. However, organizations that …

A Comparison Of Morphine And Nalbuphine For Intraoperative And Postoperative Analgesia, F N. Minai, F A. Khan

Department of Anaesthesia

Introduction: Short acting narcotics are not available in Pakistan and the supply of drugs like morphine and pethidine is short and erratic; therefore there is a need for investigating acceptable alternatives for analgesia, to be used for balanced anaesthesia.Objective: We studied the agonist-antagonist narcotic nalbuphine compared to morphine, for intra and postoperative pain relief in total abdominal hysterectomies.Methods: In a randomised double blind trial, fifty ASA I and II patients in two groups of twenty five each were given equianalgesic doses of morphine and nalbuphine. Hemodynamic stability, intraoperative analgesia, recovery profiles, incidence of side effects and need for postoperative supplements …

Toward Equity In Education: Academic Performancesof Medical Students In Regular, Mesrapand Problem-Based Programs, B. Laisnitsarekul

Chulalongkorn Medical Journal

No abstract provided.

Impact Of Anemia In Cancer Patients, N. Voravud, N. Charuruks, W. Limpanasithikul

Chulalongkorn Medical Journal

No abstract provided.

Extrarenal Wilms' Tumor, M Yunus, R Hashmi, S H. Hasan, H M. Brohi

Department of Radiology

No abstract provided.

Saving City Lifelines: Lessons Learned In The 9-11 Terrorist Attacks, Mti Report 02-06, Brian M. Jenkins

Mineta Transportation Institute

This case study of the September 11, 2001, terrorist attacks examines how the Metropolitan Transportation Authority, New York City Transit, Port Authority, and other transit systems responded to the events of 9-11, and how the Office of Emergency Management (OEM) worked to coordinate response and recovery operations; it also seeks to identify those lessons that can be captured before participants rotate or retire, memories dim, and what was learned is lost. The scope is limited to the evaluation of transit response, not other surface transportation elements such as bridges and tunnels, which seemed to function quite well and could be …

Diet And Exercise In Low Income, Culturally Diverse Middle School Students, Marilyn Frenn, Shelly Malin

College of Nursing Faculty Research and Publications

It is important to understand constructs essential to low-fat-diet and physical-activity behaviors of low-income culturally diverse middle-school-age students, because ethnicity and socioeconomic status influence body weight status, and these groups are most at risk for obesity later in life. In this descriptive study, constructs important in low-fat diet and physical activity in low- to middle-income, culturally diverse middle school students were examined. Revised for cultural/developmental appropriateness and reading level, instruments incorporating constructs from the Health Promotion and Transtheoretical Models were tested with 221 youth. Results demonstrated that percentage of fat in diet, total number of strategies used for a low-fat …

Effect Of Computer Keyboard Slope On Wrist Position And Forearm Electromyography Of Typists Without Musculoskeletal Disorders, Guy G. Simoneau, Richard W. Marklin, Joseph E. Berman

Physical Therapy Faculty Research and Publications

Positioning a computer keyboard with a downward slope reduces wrist extension needed to use the keyboard and has been shown to decrease pressure in the carpal tunnel. However, whether a downward slope of the keyboard reduces electromyographic (EMG) activity of the forearm muscles, in particular the wrist extensors, is not known. Subjects and Methods. Sixteen experienced typists participated in this study and typed on a conventional keyboard that was placed on slopes. Electromyographic activity of the extensor carpi ulnaris (ECU), flexor carpi ulnaris (FCU), and flexor carpi radialis (FCR) muscles was measured with surface electrodes, while the extension and ulnar …

The Palestinians In Egypt: An Investigation Of Livelihoods And Coping Strategies, Oroub El Abed

Faculty Journal Articles

No abstract provided.

A Browser For Incremental Programming, Andrew P. Black

Computer Science Faculty Publications and Presentations

Much of the elegance and power of Smalltalk comes from its programming environment and tools. First introduced more than 20 years ago, the Smalltalk browser enables programmers to “home in” on particular methods using a hierarchy of manually-defined classifications. By its nature, this classification scheme says a lot about the desired state of the code, but little about the actual state of the code as it is being developed. We have extended the Smalltalk browser with dynamically computed virtual categories that dramatically improve the browser’s support for incremental programming. We illustrate these improvements by example, and describe the algorithms used …

Substrate Specificity, Metal Binding Properties, And Spectroscopic Characterization Of The Dape-Encoded N-Succinyl-L,L-Diaminopimelic Acid Desuccinylase From Haemophilus Influenzae, David L. Bienvenue, Danuta M. Gilner, Ryan S. Davis, Brian Bennett, Richard C. Holz

Physics Faculty Research and Publications

The catalytic and structural properties of divalent metal ion cofactor binding sites in the dapE-encoded N-succinyl-l,l-diaminopimelic acid desuccinylase (DapE) from Haemophilus influenzae were investigated. Co(II)-substituted DapE enzyme was 25% more active than the Zn(II)-loaded form of the enzyme. Interestingly, Mn(II) can activate DapE, but only to ∼20% of the Zn(II)-loaded enzyme. The order of the observed k_cat values are Co(II) > Zn(II) > Cd(II) > Mn(II) >Ni(II) ∼ Cu(II) ∼ Mg(II). DapE was shown to only hydrolyze l,l-N-succinyl-diaminopimelic acid (l,l-SDAP) and was inactive toward d,l-, l,d-, and d,d-SDAP. DapE was also inactive toward several acetylated amino acids as …

Risk Factors For Cardiovascular Disease In School Children--A Pilot Study., A. K. Khuwaja, Zafar Fatmi, W. B. Soomro, N. K. Khuwaja

Community Health Sciences

OBJECTIVE:

To assess the frequencies of risk factors for cardiovascular disease in school children. The information may help in designing interventions aimed at modifying unhealthy lifestyle in children, which may reduce the later incidence of cardiovascular disease in adults.

METHODS:

A cross-sectional study was conducted on 206 students (ages 14-18 years), enrolled in higher secondary school. Students were interviewed about their lifestyles, family history of cardiovascular disease and its risk factors. Moreover, they were assessed for height, weight and blood pressure.

RESULTS:

Twenty nine percent of the children were physically inactive, 31% were taking unhealthy diet daily, 21% were overweight …

Beneficial Effects Of Flexible Insulin Therapy In Children And Adolescents With Type 1 Diabetes Mellitus, Ramin Alemzadeh, P. Palma-Sisto, Elaine Parton, Joan P. Totka, Mary De Sales Kirby

College of Nursing Faculty Research and Publications

The purpose of this study was to determine the feasibility of a flexible multiple daily insulin (FMDI) regimen in routine pediatric diabetes care by comparing HbA_1c, body mass index (BMI), and episodes of severe hypoglycemia (SH) before and after initiation of FMDI therapy. Data from 44 patients (2-16 years old), on a conventional insulin (CI) regimen, were collected during quarterly diabetes clinic visits. These patients were transitioned from CI to FMDI regimen: pre-meal lispro (bolus) and once or twice daily Humulin Ultralente with or without bedtime Humulin NPH as the basal insulin. There was a significant improvement in …

The New Economy Is Dead, Long Live The Information Economy, Phillip J. Bryson

Faculty Publications

The arrival of the 2001-2003 recession caused many to suppose that the so-called "New Economy" was now defunct. This article addresses a number of related issues, including the question of the durability and viability of business cycles in the face of the technological developments of the information age. It asks what went wrong with the New Economy and examines its characteristics as well as its remaining possibilities and prospects for the future. Finally, it considers the spread of the Information Economy to Europe, especially to Germany, the country that one might expect to be the leading European player, but which …

Are We Queer? Are We Medieval? The Need To Be All Things To All People, Stephen Morris

Medieval Feminist Forum: A Journal of Gender and Sexuality

No abstract provided.

Bs News

Building Services Engineering

No abstract provided.

Re-Engaging Chineseness: Political, Economic And Cultural Imperatives Of Nation-Building In Singapore, Eugene K. B. Tan

Research Collection Yong Pung How School Of Law

This article examines the management of Chinese identity and culture since Singapore attained independence in 1965. Due to the delicate regional environment, ethnic Chinese identity has been closely managed by the ruling elites, which have been dominated by the English-educated Chinese. There is the evolution from a deliberate policy of maintaining a low-key ethnic Chinese profile to the recent effort to re-sinicize--in form--the majority ethnic group. The article examines the policy impulses and implications for such a landmark change in reconceptualizing the Chinese-Singapore identity, which can be attributed to the needs of regime maintenance buttressed by Confucian ethos as well …

High Bile Duct Injury Following Laparoscopic Cholecystectomy, Mohammed I. Al-Sebayel

Saudi Medical Journal

OBJECTIVE: Laparoscopic cholecystectomy is now widely applied in hospitals throughout the Kingdom of Saudi Arabia (KSA). Iatrogenic bile duct injury occurs rarely. It is a serious complication with long term consequences on patients. This paper describes our experience in dealing with this complication and the eventual outcome of the patients. METHODS: Between July 1993 and December 1999, 17 patients with high bile duct injury were referred to the Hepatobiliary Unit of King Khalid University Hospital and King Fahad National Guard Hospital, Riyadh, KSA. Their charts were reviewed retrospectively. Once a patient was referred, a clinical evaluation with particular attention to …