243 research outputs found

    The Impact of Energy Resource Development of Water Resource Allocations

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    This research used a linear programming model of the agricultural and energy sectors of Utah to examine the economically efficient allocation of water between agriculture and energy. Data were collected for agricultural returns, costs, and water requirements; energy returns, costs, and water requirements; and water supply costs. Results indicate that if large scale energy development occurs in the Colorado River Basin in Utah, most of irrigated agriculture will be eliminated, given Utah’s consumptive use constraint under the Upper Colorado Rive Compact. On the other hand, for two more “probable” levels of energy development, including the Energy Research and Development Administration’s projections for the year 2000, only minor reductions in irrigation acreages would be expected. Under conditions of severe, prolonged drought, energy demands would consume almost all the water currently used in agriculture, given either of the “probably” scenarios

    The Virgin River Basin Study: A Regional Approach to Multiobjective Planning for Water and Related Resources

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    A joint research effort by the Utah Water Research Laboratory and the Nevado Center for Water Resources Research applied two multiobjective planning models to the Virgin River Basin in order to test the efficiency and practicality of applying such tools in water resrouces planning. The surrogate Worth Trade-off (SWT) method couples mathematical optimization to quantify trade offs among noncommensurable objectives with interviews to compare public preferences with respect to these trade offs. PROPDEMM uses information on interest group objectives, balues, willingness to pay, influence, lebel of information, etc. to compare the political feasibility of alternative courses of action. Both models were applied to assess the difficulties in doing so and the usefulness of the results. The trade offs identified by the SWT method showed agricultural water use to be so dominant in the basin that slight adjustments in irrigation efficiency could supply all foreseeable needs for additional water for other uses, such trade offs to be too inconsequential to identify and compare public preferences, and other trade offs to be impossible because of the position taken by ecologists that any environmental change would destroy a rare species of minnow. Prior to analyzing a situation by the SWT method, the planner should make sure that the trade offs will be of a magnitude meaningful to the public and that the model selected will be sufficiently refined in analyzing small units in time and space to identify locally significant trade offs. PROPDEMM showed the politically most controversial trade off to be between construction of energy generating facilities and life support for the minnow, a controbersy that would probably be decided in favor of the environmentalist because of their power and non-openness to change. Improvements to the model to do a better job of interfacing environmental with social data were recommended. Social modeling in such low population areas was found to be restricted by laws against disclosure of private information because of the very small numbers of individuals living in many evaluation units

    Safety and efficacy of transdermal fentanyl in patients with cancer pain: phase IV, Turkish oncology group trial

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    We have performed a prospective evaluation of the efficacy, safety and convenience of the transdermal therapeutic system - fentanyl (TTS-F) in Turkish cancer patients when it was newly available in Turkey. Ninety-nine patients with historically confirmed malignancy and pain entered the study; the mean age was 55.1 (16-58) years. The study duration was 28 days. Transdermal therapeutic system - fentanyl was used in opioid-naive or pre-treated patients. Most patients reported a decrease in pain severity. Use of rescue medication decreased from day 4 to day 28. The majority of patients rated patch convenience of use as excellent. A total of 22.2% of patients experienced adverse events that were either probably related or very likely to be related to the study drug. The majority of the adverse events mentioned were related to the digestive system. Eighteen serious adverse events were reported by 13 patients. Six events were doubtfully related, and 12 events were not related to the study drug. Four patients died during the trial. None of these deaths was attributed to the study drug. In conclusion, the trial showed that TTS-F is easily managed, effective and will help to enable the appropriate opioid administration to patients who are suffering from cancer pain in Turkey

    Neurogenic bladder in patients with traumatic spinal cord injury: Treatment and follow-up

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    Study design:Multi-center, cross-sectional study.Objectives:Our aim was to evaluate the treatment methods and follow-up of neurogenic bladder in patients with traumatic spinal cord injury retrospectively using a questionnaire.Setting: Turkey.Methods:Three hundred and thirty-seven patients who had spinal cord injury for at least 2 years were enrolled from six centers in the neurogenic bladder study group. They were asked to fill-out a questionnaire about treatments they received and techniques they used for bladder management.Results:The study included 246 male and 91 female patients with a mean age of 42±14 years. Intermittent catheterization ( IC) was performed in 77.9% of the patients, 3.8% had indwelling catheters, 13.8% had normal spontaneous micturition, 2.6% performed voiding maneuvers, 1.3% used diapers and 0.6% used condom catheters. No gender difference was found regarding the techniques used in bladder rehabilitation ( P>0.05). Overall, 63.2% of patients used anticholinergic drugs; anticholinergic drug use was similar between genders ( P>0.05). The most common anticholinergic drug used was oxybutynin ( 40.3%), followed by trospium ( 32.6%), tolterodine ( 19.3%) darifenacin ( 3.3%), propiverine ( 3.3%) and solifenacin ( 1.1%). The specialties of the physicians who first prescribed the anticholinergic drug were physiatrists ( 76.2%), urologists ( 22.1%) and neurologists ( 1.7%). Only four patients had previously received injections of botulinum-toxin-A into the detrusor muscle and three of them stated that their symptoms showed improvement. Most of the patients ( 77%) had regular follow-up examinations, including urine cultures, urinary system ultrasound and urodynamic tests, when necessary; the reasons for not having regular control visits were living distant from hospital ( 15.3%) and monetary problems ( 7.7%). Of the patients, 42.7% did not experience urinary tract infections ( UTI), 36.4% had bacteriuria but no UTI episodes with fever, 15.9% had 1-2 clinical UTI episodes per year and 5% had ≥3 clinical UTIs. The clinical characteristics of patients with and without UTI ( at least one symptomatic UTI during 1 year) were similar ( P>0.05). The frequency of symptomatic UTI was similar in patients using different bladder management techniques ( P>0.05).Conclusion:The most frequently used technique for bladder rehabilitation in patients with SCI was IC ( 77.9%). In all, 63.2% of patients used anticholinergic drugs, oxybutynin being the most commonly used drug. Also, 77% of patients had regular control visits for neurogenic bladder; 42.7% did not experience any UTIs. © 2014 International Spinal Cord Society

    Intermittent catheterization in patients with traumatic spinal cord injury: Obstacles, worries, level of satisfaction

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    Objectives: The aim of this study is to examine the obstacles in people with traumatic spinal cord injury (SCI) face performing intermittent catheterization (IC), also their worries and level of satisfaction. Methods: Two hundred sixty-nine patients performing IC for at least 3 months were asked to fill-out a questionnaire about their opinions on IC. Results: In total, 69.5% of patients performed IC themselves, 10.4% had performed by their mothers, 7.8% by another caregiver and 7.4% by their spouse. For the 72 (26%) patients unable to apply IC, reasons were insufficient hand function (56.1%), being unable to sit appropriately (35.4%) and spasticity (8.5%). In all, 70% of male patients had insufficient hand function, 20% could not sit and 10% had spasticity while 56.3% of female patients could not sit, 37.5% had insufficient hand function and 63% had spasticity. Difference between sexes was found to be statistically significant (P<0.05). Worries patients had when starting IC were fear of being dependent on IC (50.2%), accidentally injuring self (43.8%), embarrassment (43.2%), causing an infection (40.2%), bleeding (32.7%), fear of feeling pain (30.2%) and hygiene (24.7%). More women felt embarrassment; other items were similar in both sexes. In all, 46.9% of patients had urinary incontinence in intervals. Conclusion: In total, 69.5% of patients performed IC themselves. Men's most common obstacle was insufficient hand function while women's was being unable to sit appropriately. Patients' most common worries were being dependent on IC for life. In all, 46.9% had incontinence in intervals; 47.9% said IC improved their life quality; and 97.4% preferred IC over continuous catheterization. © 2014 International Spinal Cord Society All rights reserved
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