58 research outputs found
Review of the effects of anesthetic agents used as premedication for patients undergoing electroconvulsive therapy with diagnoses of bipolar disorder or major depression on convulsion, recovery period, and hemodynamic parameters
Objective: The aim of this study was to examine the effects of anesthetic agents used as premedication in patients undergoing electroconvulsive therapy (ECT) for diagnoses of bipolar disorder or major depression in terms of convulsion, recovery period, and hemodynamic parameters. Materials and Method: This retrospective study was carried out by screening the anesthesia forms of patients in a psychiatry clinic in Turkey. Results: Researchers reviewed 104 patient files, of which 39 fit the inclusion criteria. 26 patients were given premedication; 13 patients were not given premedication. The study found a significant difference between the group to which dexmedetomidine was given and the non-premedication group in terms of mean arterial blood pressure and heart rate. A significant difference was also found between the group to which midazolam was given and the non-premedication group in terms of peripheral oxygen saturation. Conclusion: Premedication before ECT may be used to reduce the side effects after ECT without affecting convulsions and the recovery period
A two phased fuzzy methodology for selection among municipal projects
A municipality improves the quality of community life through its projects and actions. However, project selection and prioritization by municipalities are highly complex processes. Therefore, multicriteria decision making (MCDM) methodologies are very suitable for determining the best alternative. Recently, some studies have concentrated on the selection of the best project alternatives. In this paper, a two phased fuzzy MCDM methodology is proposed for the selection among municipal projects. In the first phase, fuzzy TOPSIS method is used to select the main project group and then fuzzy AHP is used to select the best sub-municipal project. The application of the suggested methodology has been made at the central district municipality in Konya, Turkey
Applicability of pressure retarded osmosis power generation technology in Istanbul
In this study, the applicability of pressure retarded osmosis power generation was investigated in order to meet the electricity demand in Turkey. Pressure retarded osmosis (PRO) is a method that converting salinity gradients to power using a semi-permeable membrane against an applied pressure and PRO is one of the promising candidates to reduce fossil fuel dependency. In PRO, water is transported from a low concentrated feed solution to a high-concentrated draw solution. According to the literature findings, in order to produce 1MW of electricity 1m3/s fresh water flow is needed. Turkey is surrounded on three sides by water and has a big potential to develop this technology. Riva River is investigated in the scope this study. Currently Turkey’s total installed power capacity reached 85.200 MW at the end of 2017.Calculations of PRO power generation reveals that it is possible to generate 25,45 MW, If using 5% of total river flow
Solving large-scale uncapacitated facility location problems with evolutionary simulated annealing
Uncapacitated Facility Location (UFL) Problems are, in general, modelled as mixed integer programming problems, which are known as NP-hard problems. In recent years, a few publications have appeared on the metaheuristics for solving UFL problems, discussing the performance of particular implementations of metaheuristics for small and middle size UFL benchmarks. The large-scale problems remain untouched. The approach presented in this paper attempts to tackle them with a metaheuristics combining two well-known approaches. The idea is to enable algorithm searching through solution space by taking advantage of both underlying approaches in order to avoid local minima. The power of simulated annealing (SA) in local search and that of the evolutionary approach in global search have been brought together to obtain the desired solution quality within a shorter time
A 2-hop Coloring-Based Collision Free Infrastructure Design for Wireless Sensor Networks
13th HONET-ICT International Symposium on Smart MicroGrids for Sustainable Energy Sources enabled by Photonics and IoT Sensors -- OCT 13-14, 2016 -- Nicosia, CYPRUSWOS: 000391440600011This paper mainly proposes a design for a communication infrastructure for Wireless Sensor Networks. The proposed design prevents message collisions by arranging the time schedules to send, receive, forward and overhear packets of the nodes considering 2-hop graph coloring mechanism. The system aims to exclude the compromised nodes in the network using the overhearing mechanism, and copes with recovering the paths of the legitimate nodes using multipath redundancy. The proposed scheduling-based and overhearing supported infrastructure brings the advantage of providing the Sensor Networks with both reliable communication using backup paths and energy conservation by preventing the collisions.HONET ICT, IEEE Commun Soc, IEEE, UCCTEA Chamber Elect Engineers, CYPRUS Int Univ, UNC CHARLOTT
Anesthetic Management of a Pediatric Patient with Arginase Deficiency
Arginase deficiency is an autosomal recessive disorder of the urea cycle in which a defect in conversion of arginine to urea and ornithine leads to hyperammonemia. Patients with urea cycle disorders may show increased protein catabolism due to inadequate intake of energy, protein and essential amino acids; infections, fever and surgery. A 12-year-old girl with arginase deficiency, ASA II who weighed 40 kg was scheduled for bilateral adductor, quadriceps and gastrocnemius tenotomies. She had mental retardation, spasticity and flexion posture of thelower limbs. Metabolic homeostasis was restored with appropriate diet. Successful anesthetic management allowed the patient to be discharged 48 hours after surgery. Increased levels of arginine and ammonia during or after surgery may lead to serious complications such as hypotension, cerebral edema, convulsions, hypothermia and spasticity. Thus special attention must be given to metabolic homeostasis and nutrition of the patients with arginase deficiency in the perioperative period. Primary goals should be to minimize stress levels by effective anxiolysis, provide an adequate amount of protein-free energy with proper fluid management and to obtain an effective preemptive and postoperative analgesia. In addition to a high level of knowledge, successful anesthesia requires professional communication among nursing staff, dietitians, pediatric metabolism specialist, surgeon and anesthesiologist
Determining Pull-Out Deformations by Means of an Online Photogrammetry Monitoring System
Chemical anchorages are applied in many engineering implementations, particularly strengthening of
reinforced concrete structures. During strengthening procedure; chemical anchorages should be tested, since
they supply to transfer the load between existing construction elements and newly added elements. Therefore;
the study of the quality of chemical anchorages is an important issue in construction materials science. In this
context; the most important experiment is to determine the pull-out loads of embedded anchorage
reinforcement by applying axial loads. In this study; it is aimed to determine the displacements of steel
reinforcements, embedded into concrete by using chemical anchorages, while applying axial pulling loads. In
order to determine the displacements and load - deformation graphs; starting conditions and every 10 bar
pressure applied conditions of the steel reinforcements were captured by the cameras. The obtained images
were evaluated by using photogrammetric software. Based on the photogrammetric post-processing results, the
load - deformation graphs were plotted and the loads at loss of adhesion were determine
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