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Search Results: 1 - 10 of 1222 matches for " Tahir KURTULU? YOLDA? "
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Relation of Serum Uric Acid Level with Cognitive Functions and Number of Plaques in Patients with Relapsing-Remitting Multiple Sclerosis
Tahir KurtuluYolda,Hava D?nmez Kekliko?lu,?zkan Zengin,Elif Banu SOLAK
N?ropsikiyatri Ar?ivi , 2010,
Abstract: Objective: Several studies have identified impaired performance on the cognition test in people with multiple sclerosis (MS), yet uncertainty remains over the cause of this impairment. The aim of this study was to evaluate the correlation of serum uric acid (UA) level with cognitive impairment and magnetic resonance imaging (MRI) lesions in patients with relapsing-remitting multiple sclerosis (RRMS).Methods: In this study, 50 adults patients with RRMS (disease period 1-5 years) were assessed with neuropsychological test batteries and laboratory blood studies. All the patients were subjected to oranial MRI examination and clinical evaluation with the expanded disability status scale (EDSS) was applied. Results: Cognitive impairment was found in 44% of the patients. Mean UA serum level was measured as 4.38±1.60 mg/dl (2-9 mg/dl) and the mean EDSS score was 2.09±2.01 (0-7). Even it is not statistically significant, the relation between serum UA level and cognitive functions or number of plaques on MRI was found at about statistically significant level (p=0.09). A statistically significant correlation was observed between the scores of the concentration and distractibility subtest scores of the ADAS-cog test and the serum UA levels (p=0.01). However, the effects of exhaustion and emotional disorders on this relation can not be excluded.Conclusion: Our findings suggest that in RRMS patients there is no primary deficit in serum uric acid. Cognitive impairment and total MRI lesion load in RRMS patients are not directly effected by serum UA level. (Archives of Neuropsychiatry 2010; 47: 333-7)
Neuropsychiatric Findings in a Delayed Encephalopathy Due to Carbon Monoxide Intoxication
A. Emre SARGIN,Hava D?NMEZ,Sibel ?RSEL,Tahir KurtuluYOLDA
N?ropsikiyatri Ar?ivi , 2009,
Abstract: Carbon monoxide (CO) intoxication can be a deadly condition and is a very common public health problem in Turkey due to the use of coal stoves during the winter months in homes. Carbon monoxide intoxication accounts for more than half of the deaths due to intoxications in Turkey. It is very likely to misdiagnose the cases of delayed anoxic encephalopathy (DAE) which are seen after the latent period following the acute intoxication. In delayed anoxic encephalopathy, following complete recovery and after a latent period, neurologic and/or psychiatric symptoms appear again. The symptom triad of DAE is mental deterioration, urinary and/or gaita incontinence and gait disturbances. The psychiatric appearance in DAE can be seen in a variety of very different findings including dementia, amnestic syndromes, organic affective disorders, personality disorders and psychosis. In this case report, we present a 35-year-old man, who was admitted to the hospital because of irritability and loose mind. The patient did not have any previous psychiatric or neurologic disorder, but he had CO intoxication 33 days before the admission and was discharged from the hospital following a hyperbaric oxygen treatment with a complete recovery. After a 15-day latency period he was admitted to the hospital because of the mentioned symptoms. The differential diagnosis of the rich neuropsychiatric findings together with cranial magnetic resonance imaging findings (MRI) are discussed in this patient. (Archives of Neuropsychiatry 2009; 46: 121-4)
The Prognostic Value of Serum Uric Acid Level in Acute Ischemic Stroke
Hava D?NMEZ KEKL?KO?LU,Selda KESK?N,Tahir KURTULUYOLDA
Journal of Neurological Sciences , 2009,
Abstract: Introduction and Objective: Uric acid is a natural anti-oxidant that plays a role in acute oxidative stress reactions like acute ischemic stroke. In this study, we aimed to search the relation between serum uric acid level, length of hospital stay and severity of stroke in acute stroke patients, and consequently, the prognostic value of serum uric acid level.Patients and Methods: We performed a retrospective study on 100 patients who had presented to the emergency department with the findings of acute ischemic stroke. All the laboratory, radiological and clinical investigations were recorded. All the risk factors, National Institute of Health Stroke Scale (NIHSS), laboratory values, clinical findings, length of hospital stay of the patients and the treatment modalities were recorded.Results: The median serum uric acid level was 5.25±2.03 mg/dl. The median level in females was found to be higher than that in males. The length of hospital stay varied from 2 to 57 days and the median value was 13±8.66 days. In the multivariate analysis, increases in the levels of serum uric acid measured were significantly associated with decreased length of hospital stay. We detected a low value correlation between NIHSS and serum uric acid levels, but it was statistically insignificant. According to our results, there was a strong negative correlation between serum uric acid levels and the length of hospital stay, and a weak correlation between the serum uric acid level and the severity of stroke.
Methanol Poisoning and Putaminal Hemorrhage: Case Report
Hava D?NMEZ KEKL?KO?LU,Tahir KURTULUYOLDA,Y?ld?z ?ORUH
Journal of Neurological Sciences , 2007,
Abstract: Methanol is a highly toxic substance used as an industrial solvent and automotive antifreeze. The central nervous system and the visual pathway are the main targets of methanol poisoning. We present the cranial computerized tomography (CT) imaging findings in acute methanol intoxication in a 44-years-old man who was admitted to the emergency department with weakness, blurred vision and a progressive decrease in the level of consciousness. CT imaging showed bilateral putaminal hemorrhagic lesions. A case is hereby presented in which CT played an important role in making the diagnosis due to poor patient's history and unavailability of methanol assay.
Carbon Monoxide Induced Parkinsonism
Havva D?NMEZ KEKL?KO?LU,Hafize Nalan GüNE?,Tahir KurtuluYOLDA
Journal of Neurological Sciences , 2009,
Abstract: Carbon monoxide (CO) poisoning is a rather common in winter months of our country because of stove and flash gas heater. While low doses CO poisoning induce cardiac and neuropsychiatric symptoms; high doses acute or chronic CO poisoning induce coma and death. We evaluated consuquent 10 patients parkinsonism findings who submitted our hospital in the last 6 months. The patients were minimum 22 maximum 60 years-old (Mean 38). Three patients had unilateral and seven patients had bilateral hypokinesia and rigidity. Together with this symptoms; all patients had encephalopathy, psychotic, cardiac or internal symptoms, at different levels. Patients took hyperbaric oxygen, pramipexola and different treatment for their sypmtoms and one of the patients died at the hospital because of cardiac arrest. Other 9 patients symptoms have reduced and their treatment are continuing.
Opercular Syndrome Due to an Unilateral Opercular Infarction
Caner Baydar,H. Nalan Güne?,Ufuk ?ener,ahir KurtuluYolda
N?ropsikiyatri Ar?ivi , 2012,
Abstract: The opercular syndrome is also known as Foix-Chavany-Marie syndrome and also as facio-labio-pharyngo-glosso-laryngo-brachial paralysis or the cortical type of pseudobulbar paralysis. This rare neurological entity generally develops secondary to cerebrovascular accidents affecting the bilateral opercular regions, usually as a result of subsequent strokes. In this paper, we describe a 74-year-old woman who presented with acute onset of inability to speak and swallow. Neurological examination revealed bilateral palsy of lower motor cranial nerves with preservation of reflex and automatic movements. Magnetic resonance images of the brain demonstrated an acute left opercular infarction. This syndrome usually occurs due to bilateral opercular lesions, nevertheless, the typical features of the syndrome may develop as a result of unilateral opercular lesion. (Arc-hi-ves of Neu-ropsy-chi-atry 2012;49: 74-6)
A Research on the Impacts of Core Employees on the Performances of SME’s  [PDF]
Kurtulu? Y?lmaz Gen?
Sociology Mind (SM) , 2014, DOI: 10.4236/sm.2014.43021
Abstract:
This study includes a research on the impacts of core employees on the perceived performances of Small and Medium Sized Enterprises (SME’s). Employees, who are working at manufacturing department or basic function, were taken as core employees in the frame of the research. This research was conducted at the Middle and Eastern Black Sea region of Turkey; at 60 SME’s. The research was realised on the bases of the resource-based view of the firm; the relation between the characteristics of core employees as rareness, hardness to imitation and the perceived performances of SME’s were given. This study contributes to the literature for its regional focus to the topic and for the presentation of how SME’s perceive organizational performance as dimensional context. The results of the research didn’t support the hypothesis which claims that there is a positive relationship between the expertises of core employees, whose superior characteristics are specific to firms and the organizational performance.
Use of Masonry Construction & Demolition Waste in Concrete  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.52017
Abstract: Massive amounts of brick waste are obtained from demolition of old buildings and structures around the world. With the increased stress on sustainable construction, and environmentally friendly materials and greener concreting practices, a large proportion of such waste bricks are crushed and mixed with normal aggregates for use in concrete. The performance of concrete containing waste brick aggregates partially replacing normal aggregates have not been investigated for their performance. This paper covers investigations carried out on concrete with such aggregates obtained from demolition waste and mixed with varying proportions of normal aggregates to produce concrete. Two types of crushed brick aggregates were mixed with gravel in the ratios of 30:70 and 40:60 by weight and specimen were cast for investigations. Two w/c ratios were investigated. Various tests were carried out to assess the compressive strength of cubes and cylinders of mixed aggregates concrete along with f1exural strength, stress/strain behavior, moduli of elasticity, ultrasonic pulse velocity determination, densities, surface absorption, shrinkage and frost resistance. The values obtained from these tests were compared with the values of concrete with normal aggregates (gravel) with similar w/c ratios. While the strength tests and durability tests more or less gave satisfactory results however the larger moisture absorption by the waste brick aggregates reduces the frost resistance capacity somewhat thereby care needs to be exercised in using these mixes in regions/areas susceptible to frost.
Sustainable Construction—High Performance Concrete Containing Limestone Dust as Filler  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53034
Abstract: Massive amounts of limestone waste are produced by the stone processing industry worldwide. Generally, it is believed that 60% to 70% of the stone is wasted in processing in the form of fragments, powder and slurry out of which around 30% is in the form of fine powder [1]. This waste has no beneficial usage and poses environmental hazards. Use of this waste product in the construction industry can largely reduce the amount of waste to be disposed off by the local municipalities in addition to reducing large burden on the environment. Some basic research on use of limestone dust as cement/ concrete filler?has?been carried out in the recent past but high strength/ high performance concretes have not been investigated yet [2] [3]. The concrete industry is among the largest consumer of raw materials worldwide and has been investigated for use of various types of waste materials like crushed brick, rice husk and straw ash as either aggregates for concrete or as partial cement substitutes. Use of limestone dust as filler material in concrete can consume a huge amount of this waste material which has to be disposed off otherwise, creating large burden on the environment. This experimental study aimed at evaluating the properties of high performance concretes made from Portland cement, natural aggregates and sand. Limestone dust was added by replacing sand in the percentages of 10% and 20%. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?N/mm2, 80?N/mm2 and 100?N/mm2.
Sustainable Construction—Use of Stone Dust as Plasticiser in High Strength SCC with Blended Cement  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53035
Abstract: Extensive growth in the developing countries due to infrastructure development is resulting into massive consumption of concrete thereby increasing the demand on concrete materials. Quite large amounts of fine aggregates are required for concrete in developing countries thus shortages of quality river sand is putting pressure on availability of fine aggregates. To fulfill the high demand of fine aggregates, a search for alternative materials is in process. Stone crushing and processing industry is a large industry which generates large amounts of stone dust and slurry which is a waste produced from this process. Tons of such waste generated has no useful purpose except as landfill material. Some preliminary studies have been conducted into use of marble/ limestone waste for use in concrete [1] [2].?This study aims at using stone dust as partial replacement of sand in concrete to observe its effects on workability and other mechanical properties. This would result in useful consumption of this waste product thereby eliminating environmental issues related to its disposal. Partial replacement of 10% and 20% sand replacement with stone dust is carried out with the use of self-compacting concrete with blended cement. Blended cement used contains 50% rice husk ash and 50% Portland cement. Such high strength SCC with blended cement containing 50% rice husk ash and 50% Portland cement has already been tested to provide better quality concrete [3]. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?MPa & 80?MPa. Compressive strengths of high strength SCC with blended cements and 10% and 20% replacement of sand with stone dust for 60?MPa and 80?MPa were observed to be higher by about 10% to 13% than the control specimen. Higher elastic moduli and reduced permeability were observed along with better sulphate and
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