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Tel E, Ugur FA, Gokce AA. Alpha Induced Reaction Cross Section Calculations of Tantalum Nucleus. JOURNAL OF FUSION ENERGY 2012. [DOI: 10.1007/s10894-012-9550-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Tel E, Yiğit M, Tanır G. Cross Sections Calculations of (d, t) Nuclear Reactions up to 50 MeV. JOURNAL OF FUSION ENERGY 2012. [DOI: 10.1007/s10894-012-9564-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kaplan A, Özdoğan H, Aydın A, Tel E. Deuteron-Induced Cross Section Calculations of Some Structural Fusion Materials. JOURNAL OF FUSION ENERGY 2012. [DOI: 10.1007/s10894-012-9532-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tel E, Kara A. Neutron, Proton and Alpha Emission Spectra of Nickel Isotopes for Proton Induced Reactions. JOURNAL OF FUSION ENERGY 2011. [DOI: 10.1007/s10894-011-9470-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Tel E, Yiğit M, Tanır G. Study on (n,t) Reactions of Zr, Nb and Ta Nuclei. JOURNAL OF FUSION ENERGY 2011. [DOI: 10.1007/s10894-011-9450-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tel E, Aydin A. Investigation of Lead Target Nuclei Used on Accelerator-Driven Systems for Tritium Production. JOURNAL OF FUSION ENERGY 2011. [DOI: 10.1007/s10894-011-9433-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sahan M, Tel E, Aydin A, Yegingil I. Investigation of Some Stellar Iron Group Fusion Materials for (n, p) Reactions. JOURNAL OF FUSION ENERGY 2011. [DOI: 10.1007/s10894-011-9430-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tel E, Şahan M, Aydın A, Bölükdemir M, Şahan H, Uğur FA. Investigation of Some Structural Fusion Materials for (n, α) Reactions at the 14–15 MeV Energy Region. JOURNAL OF FUSION ENERGY 2010. [DOI: 10.1007/s10894-010-9337-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aydin A, Tel E, Şahan M. Calculation of Equilibrium and Pre-equilibrium 4He-Emission Spectra at 62 MeV Proton Incident Energy. JOURNAL OF FUSION ENERGY 2010. [DOI: 10.1007/s10894-010-9339-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Aydin A, Türeci G, Tel E, Kaplan A. Investigation of Deuteron Emission Spectra at 62 MeV Proton Incident Energy. JOURNAL OF FUSION ENERGY 2010. [DOI: 10.1007/s10894-010-9283-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Tel E, Kaplan A, Aydın A, Büyükuslu H, Demirkol İ, Arasoğlu A. Triton Emission Spectra in Some Target Nuclei Irradiated by Ultra-Fast Neutrons. JOURNAL OF FUSION ENERGY 2010. [DOI: 10.1007/s10894-010-9281-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kaplan A, Büyükuslu H, Aydin A, Tel E, Yıldırım G, Bölükdemir MH. Excitation Functions of Some Neutron Production Targets on (d,2n) Reactions. JOURNAL OF FUSION ENERGY 2009. [DOI: 10.1007/s10894-009-9255-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Aydin A, Yalim H, Tel E, Şarer B, Ünal R, Sarpün İ, Kaplan A, Dağ M. Level density parameter dependence of the fission cross sections of some subactinide nuclei induced by protons with the incident energy up to 250MeV. ANN NUCL ENERGY 2009. [DOI: 10.1016/j.anucene.2009.07.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bölükdemir MH, Tel E, Aktı NN, Aydın A, Okuducu Ş. Improved Formula for (n,3He) Fusion Reactions Cross Sections Using Optical Model. JOURNAL OF FUSION ENERGY 2009. [DOI: 10.1007/s10894-009-9220-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Aydin A, Tel E, Kaplan A. Calculation of 14–15 MeV (n, d) Reaction Cross Sections Using Newly Evaluated Empirical and Semi-empirical Systematics. JOURNAL OF FUSION ENERGY 2008. [DOI: 10.1007/s10894-008-9140-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aydin A, Şarer B, Tel E. New calculation of excitation functions of proton-induced reactions in some medical isotopes of Cu, Zn and Ga. Appl Radiat Isot 2007; 65:365-70. [DOI: 10.1016/j.apradiso.2006.10.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Accepted: 10/01/2006] [Indexed: 10/23/2022]
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Arslantas A, Gucuyener D, Uzuner N, Cosan E, Durmaz R R, Atasoy MA, Ozdemir G, Tel E. Assessment of cerebral blood flow velocities in pre and post angiographic states with transcranial doppler. Neurol India 2002; 50:459-61. [PMID: 12577095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
The frequency of complications resulting from angiograms reported in the literature vary between 0.2-5 percent. This study was planned to determine the changes in cerebral blood flow velocity before and after angiography, using transcranial doppler in patients of subarachnoid hemorrhage (SAH) undergoing angiographies. Thirty patients with subarachnoid hemorrhage underwent transcranial doppler ultrasonography immediately before and after angiography. Nonionic water-soluble agents were used during the angiograms. The mean flow velocity (MFV) and pulsatility index (PI) at the M1 segment of both middle cerebral arteries was simultaneously measured. When the patients (11 male, 19 female, mean age+SD; 52.45+12.06) were compared according to changes in MFV and PI, pre and post-angiography, there was no statistical difference in MFV (p=0.51 and p=0.99, left and right side respectively), and in PI (p=0.48 and p=0.66) pre and post angiography. Although angiogram can be used to detect vasospasm in SAH, it can also be cause of vasospasm, partially due to the effect of the contrast agent on the cerebral arteries. This study proposes that the angiographic method is still safe and TCD can be used to follow up any possible changes in diameter of cerebral arteries before and after angiography.
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Arslantaş A, Atasoy M, Güner A, Coşan E, Durmaz R, Adapinar B, Tel E. Three-dimensional computed tomography in spinal pathologies. Radiography (Lond) 2002. [DOI: 10.1053/radi.2002.0380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dundar E, Arslantas A, Acikalin MF, Tel E. Cerebellar metastasis from clear cell sarcoma of the kidney. A case report with immunohistochemistry. J Neurosurg Sci 2001; 45:228-31; discussion 231. [PMID: 11912476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The aim of this study was to describe a child with a right cerebellar hemisphere metastasis from primary clear cell sarcoma of the kidney without evidence of bone metastases, and to investigate the immunohistochemical features of primary and metastatic tumors. A 12-month old boy was admitted our hospital due to an abdominal mass. Abdominal computed tomography revealed a large right renal tumor. Tumor was removed with nephrectomy. Histopathologic examination of tumor revealed clear cell sarcoma of the kidney. The patient received radiotherapy and chemotherapy in postoperative period. He suffered from gait disturbance and confusion 8 months later. A computed tomography scan revealed a tumor that was enhanced with contrast medium at right cerebellar hemisphere concomitant with ventricular enlargement. After ventriculo-peritoneal shunting procedure, tumor was excised totally and histopathologic diagnosis showed metastasis of clear cell sarcoma of the kidney. Immunohistochemically vimentin, actin, desmin, neuron specific enolase, cytokeratin, P 53, Ki-67 and P-170 were performed using formalin fixed, paraffin embedded sections. Both of the tumors were positive for vimentin and negative for desmin, actin, neuron specific enolase, cytokeratin and P 53. Scattered nuclei were stained by Ki-67 in primary and metastatic cerebellar tumor. Both primary and metastatic tumors were negative for p53 and P-170. The treatment consisted of surgery, radiotherapy and chemotherapy. The patient is alive and well without evidence of recurrence 16 months after second surgery. Clear cell sarcoma of the kidney is most commonly associated with bone metastasis. Cerebellar metastasis of clear cell sarcoma of the kidney is very unusual. To the best of our knowledge, this patient is second case in the English literature. With review of the literature, our immunohistochemical findings support the theory that relapse and metastasis of primary clear cell sarcoma of the kidney are not related with increase of aggressiveness.
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Arslantas A, Cosan E, Durmaz R, Ert Lav K, Atasoy M, Tel E. Instrumentation for posterior stabilisation of cervical traumatic and degenerative disorders: bullet-shaped implant and titanium cable. J Neurosurg Sci 2001; 45:202-4; discussion 204-5. [PMID: 11912470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
BACKGROUND Numerous implants for posterior stabilisation of cervical spine have been described so far. The aims of all these implants and techniques are rigid spinal stabilisation without neurologic damage, restoration of neuroanatomy and excellent radiological studies in postoperative period. The objective of this study was to determine the effectively and clinical safety of this system. METHODS We conducted a retrospective analysis of patients treated with posterior stabilisation system for the stabilisation of traumatic and osteodegerative disorders of lower cervical spine in our department. This posterior cervical stabilisation system consist of titanium bullet-shaped implant (Ti-Frame) and titanium cables (sof' wire). RESULTS All patients underwent only posterior fixation except 2 (anterior decompression and posterior stabilisation in 2 stages) and postoperative early immobilisation was allowed with Philadelphia collar in all patients. At the follow-up period 15.2 months (9-25 months), none of the patients had superficial or deep infection, implant resection or failure. CONCLUSIONS In conclusion, this system (Ti-frame and titanium cables) is a simple, safe and effective system for posterior cervical stabilisation in patients with traumatic and osteodegenerative disorders due to provide rigid fixation and allow CT and MR imaging without the significant artifact.
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Cosan TE, Kabukcuoğlu S, Arslantas A, Atasoy MA, Dogan N, Ozgunes I, Kebabci M, Tel E. Spinal toxoplasmic arachnoiditis associated with osteoid formation: a rare presentation of toxoplasmosis. Spine (Phila Pa 1976) 2001; 26:1726-8. [PMID: 11474362 DOI: 10.1097/00007632-200108010-00019] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN An extremely rare presentation of an isolated spinal toxoplasmic arachnoiditis is described. OBJECTIVE To draw attention to the fact that spinal arachnoid membranes may be a potential reservoir for Toxoplasma gondii. SUMMARY OF BACKGROUND DATA Central nervous system toxoplasmosis is a common manifestation in patients who are immunodeficient. Reports on the spinal toxoplasmosis are rare and focused on spinal cord involvement. METHODS An adult patient presented with symptoms of spastic paraparesis that had begun 13 years before admission. Thoracic spinal magnetic resonance imaging showed small lesions in posterior subarachnoid space at Th7-Th8. A Th7-Th8 laminectomy was performed. Intradural-extramedullary lesions were excised. RESULTS Clinical, immunologic, and pathologic examinations showed adhesive spinal arachnoiditis associated with osteoid formation caused by past toxoplasmic infection. There was no impairment of the immunologic defense system. CONCLUSION Where no causative factor is found in serious spinal adhesive arachnoiditis, the possibility of spinal toxoplasmosis should also be investigated.
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Durmaz R, Atasoy MA, Durmaz G, Adapinar B, Arslantaş A, Aydinli A, Tel E. Multiple nocardial abscesses of cerebrum, cerebellum and spinal cord, causing quadriplegia. Clin Neurol Neurosurg 2001; 103:59-62. [PMID: 11311481 DOI: 10.1016/s0303-8467(00)00123-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this paper we present a case of a diabetic patient with nocardial abscesses of cerebrum, cerebellum and the spinal cord. The present case is the first case in the literature of solitary intramedullary abscess in cervical spinal cord, causing tetraplegia. Nocardia asteroides grew in a culture of the abscess pus. After either surgical excision or drainage of lesions, a triple combination regimen of chemotherapy (amikacin, ceftriaxone and trimethoprim-sulfamethoxazole) was given, but the patient was lost in the postoperative period. This case gives suggestive evidence of an association between cervical spinal cord involvement and poor prognosis in CNS nocardiosis.
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Cosan TE, Arslantas A, Guner AI, Vural M, Kaya T, Tel E. Injury caused by deeply penetrating knife blade lodged in infratemporal fossa. Eur J Emerg Med 2001; 8:51-4. [PMID: 11314822 DOI: 10.1097/00063110-200103000-00010] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Knife-inflicted, deeply penetrating head and neck trauma is an uncommon life-threatening injury and a challenging problem. An examination of the neurovascular and systemic physical status is a first requirement and the decision as to which approach to adopt for the removal of the blade is of critical importance. Here we report a rare case of a pre-auricular stab wound with the knife blade deeply lodged in the extracranial infratemporal fossa. Radiological investigations showed that the knife blade had entered from the temporomandibular joint and become lodged through the anterior margin of foremen magnum below the petrosal bone. Minimal left vocal cord paresis, left palatal weakness and a slight deviation of the tongue towards the left side were observed. The other neurological and systemic physical evaluations were normal. Simple withdrawal of the blade in the operating room did not cause serious neurovascular injury. Here we discuss and compare the expanded exposure of anatomical structures for blade removal and simple withdrawal in similar injuries.
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Cosan TE, Tel E, Arslantas A, Vural M, Guner AI. Indications of Philadelphia collar in the treatment of upper cervical injuries. Eur J Emerg Med 2001; 8:33-7. [PMID: 11314819 DOI: 10.1097/00063110-200103000-00007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The principles of the management of upper cervical injuries remain controversial. The specific anatomical conditions render upper cervical injuries more problematic than lower cervical injuries. Here we present and discuss our experiences with upper cervical injury, comparing them with other treatment modalities. The 24 patients admitted to our department with upper cervical injury were treated surgically or conservatively according to their neurological and radiological status. Five patients were treated surgically due to neurological abnormality associated with compression to neural structures observed in computerized tomography/magnetic resonance imaging (CT/MRI). Patients with no neural compression were managed conservatively, with the Philadelphia collar. All patients showed stable fracture healing and experienced no additional clinical disability on follow-up after a minimum of 3 months, except one who died due to cardiac and respiratory failure. Regardless of the type of injury, indication for surgery in many cases of upper cervical injury is neurological abnormality associated with radiologically observed neural compression. It is our belief that, in the absence of both neurological abnormality and compression to neural structures observed in CT/MRI, treatment with the Philadelphia collar alone is safe, cost-effective and easily applicable for many cases of upper cervical injury.
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Cosan TE, Gucuyener D, Dundar E, Arslantas A, Vural M, Uzuner K, Tel E. Cerebral blood flow alterations in progressive communicating hydrocephalus: transcranial Doppler ultrasonography assessment in an experimental model. J Neurosurg 2001; 94:265-9. [PMID: 11213964 DOI: 10.3171/jns.2001.94.2.0265] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT In many cases communicating hydrocephalus is the result of impairments in cerebrospinal fluid absorption in the arachnoid villi at the cranial convexity. Reported methods of creating experimental hydrocephalus have not sought to produce an arachnoidal adhesion in the cranial convexity. In this study the authors investigate alterations in cerebral blood flow (CBF) in experimental communicating hydrocephalus induced by the injection of kaolin into the subarachnoid space at the convexity in neonatal rats. METHODS In neonatal rats, kaolin was injected into the subarachnoid space at the cranial convexity. Assessment of CBF alterations was performed using transcranial Doppler ultrasonography preinjection and at 10 days, 4 weeks, and 8 weeks postinjection. Light microscopy examination was also performed at 4 weeks and 8 weeks postinjection. Conspicuous lateral ventricle enlargements of different dimensions were observed in kaolin-injected rats at 4 to 8 weeks postinjection. The third and fourth ventricles were dilated to a lesser extent. Resistance to CBF and increased mean CBF velocity were apparent 8 weeks after kaolin injection. Further, destruction and even loss of ependymal layers were more prominent at the chronic stage. CONCLUSIONS The present model may be considered a progressive communicating hydrocephalus because of marked changes in blood flow dynamics and destruction of the ependymal layer at the chronic stage.
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