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Search Results: 1 - 10 of 269 matches for " Surucu HS "
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Surgical approach to the cerebellopontine angle and dissection of the temporal bone: a continuing medical education course at Hacettepe University
Surucu HS
Neuroanatomy , 2004,
Abstract: When two complex structures like cerebellum and pons build up anangle, the one formed is not simple like the ones formed by twointersecting lines in geometry, but one, difficult to understand even by thepeople who see and cut it every day. To get close to a tumor here, onewill have to cut the complex temporal bone but from which direction andhow? Answering to a question like this and many difficult others in oneday was the aim of this meeting. Diverging the attention to the surgicaltechniques and anatomy, rather than the indications of surgery made thisgoal accomplished successfully.There were 30 participants, of almost equal numbers of anatomists,otolaryngologists and neurosurgeons, by coincidence. Even this was givinga good clue about how the chosen field was in the center of clinical andbasic science cooperation. The plenary session started and chaired byRuhgun Basar. The first presentation by Nuran Yener was giving everydetail of clinical anatomy of the temporal bone. Following, Sarp Saracpresented mastoidectomy and facial nerve decompression techniques withbeautiful schematic slides and real operation movies. The movies werecleverly montaged focusing on the important moments and landmarks andcropping out the intervals in between. Otherwise the movies of these longoperations can be more difficult to watch than doing the operation.After a fifteen minute coffee break, the second session started with thebeautiful presentation of Levent Sennaroglu about labyrnthectomy andtranslabyrenthal approach to the cerebellopontine angle. He describedmedial, lateral and inferior approaches which are used for different purposes.The next presentation was about anatomy of the neurovascular structures ofthe cerebellopontine angle by Beliz Tascioglu. Her presentation was mostlyby real photographs and their explanory drawings at each slide. This typeof presentation supplied extreme good orientation to the surgeons besidesteaching the complex anatomy of the region.Ibrahim Ziyal presented the middle cranial and retrosigmoid approach ofthe neurosurgeons. He also demonstrated some operational movies andgave important clues to the surgeons. The discussion became interesting byparticipation of Dr Gokhan Akdemir and his experiences from his studieswith the famous surgeon Dr Mecit Sami.At the lunch everybody was fascinated with the presentations of the morningand waiting impatiently for the practical part which would be held in theanatomy dissection laboratory. The practicals were not less successful. Theanatomy laboratory has almost turned to an operation hall or even betterwith
Neurophysiologic basis of Front-Mu points
Cabioglu MT,Kaya Y,Surucu HS
Neuroanatomy , 2009,
Abstract: Front-Mu points are specific acupuncture points located on the ventral surfaces of chest and abdominal wall.Acupuncture to Front-Mu points is used for treating diseases related with visceral organs. Applying acupunctureon Front-Mu points regulates visceral functions. In this article we tried to explain the effect mechanism ofFront-Mu point acupuncture by corresponding these points with the segmental autonomic innervation ofinternal visceral organs. Changes in the visceral organs caused by application of acupuncture can be explainedby viscero-cutaneous, cutaneo-visceral autonomic reflexes and modulation of sympathetic and parasympatheticsystems by these reflexes.
Time Dependent Wave Packet Study of the H-+ H2 Nonreactive Scattering  [PDF]
Sinan Akpinar, Seda Surucu
Journal of Quantum Information Science (JQIS) , 2011, DOI: 10.4236/jqis.2011.12013
Abstract: Time dependent wave packet calculations have been performed for the H-+ H2nonreactive scattering, summed of elastic and inelastic probabilities, on the recent reported potential energy surface of the systems. The total probabilities for total angular momentum J up to 35 have been calculated to get the converged integral cross sections over collision energy range of 0.20 - 1.42 eV. Integral cross-sections and rate constants have been calculated from the wave packet transition probabilities for the initial states (υ = 0, j = 0) by means of J-shifting method and uniform J-shifting method for J > 0.
Hazard rate estimation for location-scale distributions under complete and censored data
Baris Surucu
Statistics , 2012,
Abstract: In reliability and life testing studies, the topic of estimating hazard rate has received great attention in recent years since an estimate of hazard rate is a quite useful tool for making decisions. Some works have included nonparametric approaches while some have considered parametric structural models for complete as well as censored data sets; see Meeker et al. (1992), Antoniadis and Gr\'egoire (1999), Rai and Singh (2003), Bezandry et al. (2005), Brunel and Comte (2008), and Mahapatra et al. (2012). Depending on the shapes of the hazard rate, efficiencies differ markedly across proposed estimators. This situation is remarkable especially when different estimation techniques are utilized for unknown parameters of underlying distributions in parametric approaches. That is, estimated hazard rate (and also reliability) at a specific time point t as functions of these estimators leads to inconsistent coverage probabilities as distributional convergence of hazard rate estimator may not be at the desired rate for certain sample sizes. This manuscript focuses on the estimation of monotone hazard rate when the distribution of concern is of location-scale type. A very simple and efficient approximation of hazard rate for a complete sample is introduced as a function of order statistics, which allows a fast convergence to the asymptotic distribution while achieving highly accurate coverage probabilities for confidence intervals (CI). Efficiency of the method is demonstrated on simulation studies by considering a number of location-scale distributions having various hazard shapes. We also consider the case of censored samples by incorporating the predicted future order statistics into the picture.
Some Characteristics of Soils on the Man Made Mounds in The Harran Plain of Turkey
Seyyid Irmak,Abdulkadir Surucu
Pakistan Journal of Biological Sciences , 2007,
Abstract: Morphological, chemical and some mineralogical characteristics of five soils, were researched to understand the genesis of soils on the man made mounds in the Harran Plain, in the Southeast Anatolia Region of Turkey. Five soil profiles developed on the man made mounds in the arid region. Time and climate have affected soil formation. Also, parent material has influenced the chemistry of soils. The parent material of man made mounds were carried from around soils in the Harran Plain by men in years ago. The parent materials of around soils are calcareous parent materials and alluvium materials. Pedon 1 was described on the Konuklu man made mounds the northeast of the study area and Pedon 5 was described on the Kupluce man made mounds the southeast of the study area. According to the place of man made mounds were ordered from north to south as following: Pedon 1, Pedon 2, Pedon 3, Pedon 4 and Pedon 5. The old of Konuklu mounds is approximately 5000-6000 years. The old of Sultantepe and Koruklu mounds are approximately 6000 years. Pedon 4 which was described on the old Harran city remnants have the youngest soils of study area. The Harran mounds was made in 1258 A.I. by Mongolians. Mongolians destroyed the Harran City and made the Harran mounds. The most important pedogenic processes is carbonate leaching and accumulation in the pedon 5 on the Kupluce man made mounds. The CaCO3 content of Pedon 5 may be attributed to eolian addition from Syria. Total Al2O3 contents of soils higher than total Fe2O3 content. According to the degree of soil formation the profiles were ordered as following: Pedon 3>Pedon 5>Pedon 2> Pedon 1>Pedon 4. The results of total elements analysis were used to determine the β leaching factor according to Jenny. The leaching factor were determined as < 1 in the Pedon 1 (0.99), Pedon 2 (0.97), Pedon 3 (0.74) and Pedon 5 (0.92). The leaching factor were determined as >1 in the Pedon 4 (1.13).
Soil Formation on Different Landscape in a Semi-humid Region of Turkey
A. Durak,A. Surucu
Journal of Agronomy , 2005,
Abstract: The purpose of this study was to determine the relation between pedogenesis and landscape (LS) in various slope and elevations located in the coast of Black Sea region in north of Samsun, Turkey. The landscape is characterized by Quaternary fluvial deposits, tertiary calcareous rocks and mesozoic basalt. Eight pedons were examined by field investigation and laboratory soil characterization techniques. A Typic Haplustalf on the summit position had the greatest degree of pedogenesis. However, a Typic Ustifluvent, with the minimum soil formation, formed on toeslope position. The soils on shoulder and backslope position were determined as a moderate development formation.
Kynurenine and serotonin pathways: A review
HS Adegbusi
Bayero Journal of Pure and Applied Sciences , 2012,
Abstract: This paper seeks to elucidate the two-key pathways involving tryptophan matabolism, namely, kynurenine and serotonin pathways. In the kynurenine pathway (KP), the discussion considers the steps of the oxidative degradation of tryptophan to yield nicotinate mononucleotide, a precursors for the biosynthesis of nicotinate nucleotides ( NAD+ and NADP+), while serotonin pathway (SP) considers the biosynthesis of serotonin from tryptophan. Two different isoforms of tryptophan hydroxylase (TPH) are involved in SP: Tryptophan hydroxylase -1 (TPH1) catalysis SP in enterochromaffin cells of the gut, while Tryptophan hydroxylase-2 (TPH2) catalysis SP in the nerve cells of the central nervous system, the brain. Emphasis is given to the relevance of pyridoxal phosphate (PLP) in KP and also identified in the pathway of KP is the liberation of alanine as a biproduct, a basis for the gluconeogenecity of tryptophan. Serotonin, a major bioactive end-product of SP is a potent neurotransmitter, vasoconstrictor, regulation of intestinal motility and a player in cognitive function. Foods that give an increased ratio of tryptophan to phenylalanine and leucine such as nuts of walnut, plantains, bananas, dates, pineapples and tomatoes are good sources of serotonin. Research suggests a diet rich in carbohydrates and low protein is also a good source. Owning to the significance of some the major bioactive end-products, intermediates and byproducts of these pathways for the well-being and happiness of human beings, more research should be carried out therein not only to unravel some of the disorders they may be associated with but to also help in the development and production of; therapeutic drugs for psychiatric and sexual disorders, and intestinal antidote.
Considerations in selecting rapid-onset opioids for the management of breakthrough pain
Smith HS
Journal of Pain Research , 2013, DOI: http://dx.doi.org/10.2147/JPR.S40745
Abstract: nsiderations in selecting rapid-onset opioids for the management of breakthrough pain Review (492) Total Article Views Authors: Smith HS Published Date March 2013 Volume 2013:6 Pages 189 - 200 DOI: http://dx.doi.org/10.2147/JPR.S40745 Received: 26 November 2012 Accepted: 17 January 2013 Published: 06 March 2013 Howard S Smith Departments of Anesthesiology, Medicine, and Physical Medicine and Rehabilitation Albany Medical College, Albany, NY, USA Abstract: Breakthrough pain (BTP) is a transitory pain that occurs despite the use of long-term, around-the-clock analgesia. It is highly prevalent in certain populations and places a significant burden on patients, their families, caregivers, and health-care systems. Despite its prevalence and impact, BTP is sometimes unrecognized and often undertreated. Various formulations of fentanyl – a rapid-onset opioid with short duration of action – are available for the management of BTP. The efficacy of formulations using transmucosal, transbuccal, sublingual, and intranasal administration routes has been demonstrated for BTP treatment in clinical trials. However, a lack of head-to-head trials evaluating their relative efficacy makes it challenging for physicians to reach informed decisions on the most efficacious intervention for individual patients. In the absence of clear data on the relative efficacy of fentanyl formulations, prescribing decisions need to be based on physician understanding and experience and product cost and availability, taking into account the individual patient's needs, the ability of the patient or caregivers to administer medication, and the patient's wishes. This review evaluates current pharmacologic methods of alleviating BTP and discusses factors that should be considered when selecting the most appropriate formulation for individual patients. With the range of fentanyl formulations available, it is now possible to successfully address BTP in the majority of patients.
Pregnancy complicated by morbidly adherent placenta in a patient with bilateral ovarian agenesis: a case report
Wong HS
International Journal of Women's Health , 2013, DOI: http://dx.doi.org/10.2147/IJWH.S37380
Abstract: egnancy complicated by morbidly adherent placenta in a patient with bilateral ovarian agenesis: a case report Case report (500) Total Article Views Authors: Wong HS Published Date February 2013 Volume 2013:5 Pages 53 - 55 DOI: http://dx.doi.org/10.2147/IJWH.S37380 Received: 27 August 2012 Accepted: 25 September 2012 Published: 05 February 2013 Hong Soo Wong Australian Women's Ultrasound Centre, Brisbane, Australia Abstract: The author presents a case of in vitro fertilization pregnancy complicated by morbidly adherent placenta in a patient with congenital bilateral ovarian agenesis. A 31-year-old woman with congenital bilateral ovarian agenesis who had undergone two previous dilatation and curettage procedures conceived following in vitro fertilization with a donor egg. Spontaneous labor occurred at 38 weeks and 5 days' gestation. The labor was augmented in the active phase and resulted in instrumental vaginal delivery. The third stage was complicated by hemorrhage and retained placenta. Morbidly adherent placenta was diagnosed on attempt at manual removal of the placenta, and the adherent part of the placenta was left in situ. This was removed uneventfully at 5 weeks following childbirth when there was no blood flow observed between the placenta and the myometrium on Doppler ultrasound examination. In conclusion, successful parturition is possible in patients with congenital bilateral ovarian agenesis. When morbidly adherent placenta is managed conservatively, the placenta may be safely removed if there is no vascularity between the placenta and the myometrium.
Pregnancy complicated by morbidly adherent placenta in a patient with bilateral ovarian agenesis: a case report
Wong HS
International Journal of Women's Health , 2013,
Abstract: Hong Soo WongAustralian Women's Ultrasound Centre, Brisbane, AustraliaAbstract: The author presents a case of in vitro fertilization pregnancy complicated by morbidly adherent placenta in a patient with congenital bilateral ovarian agenesis. A 31-year-old woman with congenital bilateral ovarian agenesis who had undergone two previous dilatation and curettage procedures conceived following in vitro fertilization with a donor egg. Spontaneous labor occurred at 38 weeks and 5 days' gestation. The labor was augmented in the active phase and resulted in instrumental vaginal delivery. The third stage was complicated by hemorrhage and retained placenta. Morbidly adherent placenta was diagnosed on attempt at manual removal of the placenta, and the adherent part of the placenta was left in situ. This was removed uneventfully at 5 weeks following childbirth when there was no blood flow observed between the placenta and the myometrium on Doppler ultrasound examination. In conclusion, successful parturition is possible in patients with congenital bilateral ovarian agenesis. When morbidly adherent placenta is managed conservatively, the placenta may be safely removed if there is no vascularity between the placenta and the myometrium.Keywords: IVF, placenta accreta, parturition, myometrium
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