Publications by authors named "Guelhanim Haciyakupoglu"

This study deals with performance of removal of cesium (Cs) and strontium (Sr) ions from synthetic aqueous solution using amino pyridine sulfone amid resin as a barrier material for nuclear waste storage areas to reduce environmental risk. The effects of adsorbate concentration, temperature and contact time on the efficiencies of the engineering barrier material for Cs and Sr ions were investigated and evaluated. It was found that total adsorption capacity was higher for cesium ions than strontium ions.

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Aim: In glioblastoma multiforme, the balance between the procoagulant system, anticoagulant system and fibrinolytic system is impaired in favour of hypercoagulability. The aim of this study was to compare glioblastoma multiforme with astrocytoma grade II by subjectively evaluating the levels of prothrombin and biotinylation thrombin, and G protein serum protease activatin receptors, as tissue factors causing hypercoagulation and affecting coagulation.

Material And Methods: Specimens from 35 cases with glioblastoma multiforme and 23 cases with astrocytoma grade II were evaluated immunohistochemically.

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Aim: To review our experience gained from the use of intraoperative ultrasonography (IOUSG) in intradural spinal tumor surgery.

Material And Methods: IOUSG was used during surgery of 69 intradural spinal tumors, operated on between 2012 and 2016. A 5-8 MHz probe of IOUSG was used, before and after durotomy to perform the exact durotomy and myelotomy, and after tumor resection, to detect a residual tumor.

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Aim: To analyze the results of stereotactic radiosurgery (SRS) or surgical treatment of 18 cases with cavernous malformation and report 2 cases with unusual localization and size.

Material And Methods: We present 11 and 8 patients who underwent surgery and SRS between 2010 and 2018 respectively. The operated group comprised six men and five women (mean age, 33.

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Chronic subdural hematoma is a frequent type of hemorrhage, which terminates with mortality if not diagnosed and treated early. The aim of this clinical study is to evaluate the patients with unilateral and bilateral recurrent chronic subdural hematoma. The study group consisted of 13 cases with unilateral and bilateral recurrent chronic subdural hematomas who underwent aggressive wide craniotomy, duraectomy, inner and outer membranectomy, dural border coagulation, incision through cortical vein trace and hang up of dural edge, between 2009 - 2016.

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Article Synopsis
  • The yearly incidence of subdural hematoma is about 13.1 cases per 100,000 people.
  • Subdural hematomas caused by metastases from skull and dura mater are uncommon.
  • This study discusses a case of a 71-year-old man with prostate adenocarcinoma who developed a chronic subdural hematoma linked to metastasis in the skull and dura mater.
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Aim: To examine morphological, radiological and biochemical effects of arginine vasopressin (AV) and V1 receptor antagonist on cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH) in rabbits.

Material And Methods: Forty male New Zealand white rabbits were randomly divided into four groups comprising 10 rabbits each. The groups were; 1) Control group, 2) SAH group, 3) SAH+AV group, 4) SAH+V1 antagonist group.

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  • Bentonite is being explored as a material for buffering radioactive waste due to its high sorption capacity for cations, but it struggles to adsorb anions because of its negative surface charge.
  • The study introduces organic-pillared bentonite (OPBent), which is modified to enhance its anion adsorption capabilities, specifically targeting selenium (Se), a toxic byproduct of radioactive waste.
  • Experimental results indicate that modifying bentonite significantly improves its ability to adsorb Se, suggesting potential for further research on using this modified material for other anionic pollutants and remediation applications.
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This paper summarizes key findings and identifies the main lessons learnt from a 5-year (2002-2008) coordinated research project (CRP) on "Assessing the effectiveness of soil conservation measures for sustainable watershed management and crop production using fallout radionuclides" (D1.50.08), organized and funded by the International Atomic Energy Agency through the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture.

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  • Balloon kyphoplasty (BKP) has been explored as a treatment for both AO type A1 and incomplete AO type A3.1 osteoporotic fractures, although the latter carries a higher risk of cement leakage.
  • A study analyzed 138 patients who underwent BKP, examining postoperative CT scans to assess the frequency and patterns of cement leakages associated with different fracture types.
  • Results indicated a 30.6% overall leakage rate, with similar rates in AO type A3.1 and various A1 fractures, but higher leakage rates in A3.1 compared to A1.1 fractures and concerning levels of intraspinal leakages, which pose a significant risk.
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Congenital intrascleral cysts are rare. They are mostly located at the limbus with corneal involvement. We report a case of a 30-month-old boy with a bulber conjunctival cyst noticed at birth.

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Object: Fresh autogenous bone graft is the most preferred osteoplastic material, whether the purpose is cosmetic, psychological, or for the protection of the brain. These grafts are not rejected and do not react immunologically. The aim of this study was to evaluate the efficacy of autogenous fat rolled with bone dust derived from the bur hole in closing small cranial defects.

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  • Between 1972 and 1996, 93 patients with huge intracranial meningiomas underwent 109 surgeries at Cukurova University, revealing a patient population predominantly female (2:1 ratio) with an average age of about 49 years.
  • The study found a postoperative mortality rate of 3.2% and an overall recurrence rate of 19%, with many patients experiencing a good outcome post-surgery.
  • The research concluded that larger meningiomas adversely impact surgical removal success, recurrence likelihood, patient outcomes, and survival rates.
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This story investigated the effects of interferon-alpha-2b (IFN-alpha2b) on the optic nerves of 17 adult male Wistar albino rats. Animals were divided into 3 groups: 6 rats (group 1) received 7.5 units (5 mIU/m2) IFN-alpha2b-a normal treatment dose, and 6 (groups 2) received 30.

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A case of recurrent meningioma with atypical features and extracranial metastases is reported. A 34-year-old female was operated in 1996, 2000, and 2002, and frontal parasagittal meningioma was extirpated. Histological diagnoses of all the resected tumors were meningotheliomatous meningioma, WHO Grade I.

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Objective: To evaluate the efficacy of diazepam and atropine sulfate premedication in preventing nausea and vomiting after strabismus surgery under general anesthesia.

Methods: Fifty children age 4 to 15 years who underwent strabismus surgery at Cukurova University Medical Faculty, Department of Ophthalmology, from February 2000 to June 2000 were randomized into 2 groups: 25 children in the control group did not receive premedication, whereas 25 children in the treatment group received premedication with 0.15 mg/kg diazepam and 0.

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  • The study investigated the effects of deferoxamine on optic nerve changes caused by blood element breakdown in a rabbit model.
  • Three groups of rabbits were used: one with induced blood clots and no treatment, one with induced clots treated with deferoxamine, and one only given deferoxamine without clots.
  • Results showed that while the optic nerves in untreated rabbits displayed significant damage, those treated with deferoxamine exhibited minimal changes, indicating that this treatment is effective in preventing nerve degeneration related to blood clots.
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  • This study examined the relationship between angiogenic features, ATP-ase activities, and SOD concentration in patients with intracranial meningiomas and glial tumors.
  • The research involved 20 tumor samples divided into two groups: 10 from meningiomas and 10 from glial tumors, revealing higher ATP-ase activities in the meningioma group but lower SOD activity compared to glial tumors.
  • Electron microscopy showed more significant vascular endothelial proliferation and cytoplasmic changes in glial tumors, indicating a relationship between endothelial growth, ATP-ase levels, and SOD activity in both tumor types.
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We induced ischemia, hypertension and hypotension in 15 rabbits in order to evaluate the ischemic changes in the optic nerve and the effect of hypertension and hypotension on ischemia. We cauterized the right internal and external carotid arteries of 15 rabbits and applied dopamine hydrochloride and glycerol trinitrate to 5 each of these rabbits. Two rabbits were used as controls.

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Object: The authors examined the relationships of brain-tumor interfaces, specific magnetic resonance (MR) imaging features, and angiographic findings in meningiomas to predict tumor cleavage and difficulty of resection.

Methods: Magnetic resonance imaging studies, angiographic data, operative reports, clinical data, and histopathological findings were examined retrospectively in this series, which included 126 patients with intracranial meningiomas who underwent operations in which microsurgical techniques were used. The authors have identified three kinds of brain-tumor interfaces characterized by various difficulties in microsurgical dissection: smooth type, intermediate type, and invasive type.

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Intracranial dissecting and giant serpentine aneurysms are rare vascular anomalies. Their precise cause has not yet been completely clarified, and the radiological appearance of such lesions can be different in each case according to the effect of hemodynamic stress on a pathologic vessel wall. For berry aneurysms, available evidence overwhelmingly favors their causation by hemodynamically induced degenerative vascular disease and there is an obvious need to determine the hemodynamic parameters most likely to induce the precursor atrophic lesions.

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