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Thyroid Hormone Reference Intervals And The Prevalence Of Thyroid Antibodies, Aydan Çelebi̇ler, Si̇bel Bi̇lgi̇li̇, Emi̇ne Ömür Erkizan, Huri̇ye Seri̇n, Muhammet Baysal Karaca
Thyroid Hormone Reference Intervals And The Prevalence Of Thyroid Antibodies, Aydan Çelebi̇ler, Si̇bel Bi̇lgi̇li̇, Emi̇ne Ömür Erkizan, Huri̇ye Seri̇n, Muhammet Baysal Karaca
Turkish Journal of Medical Sciences
To establish new reference intervals for thyrotropin (TSH), free thyroxine (FT4), and free triiodothyronine (FT3) on the Beckman Coulter DxI 800 in healthy Turkish adults and assess the prevalence of laboratory evidence of thyroid antibodies in this population. Materials and methods: Specimens were obtained from 619 healthy volunteers (338 females, 281 males).The study was conducted with health care professionals and their relatives, The mean age of all the subjects was 34.7 and the median was 31 years, with ages ranging from 15 to 84. Moreover, the subjects had no evidence of thyroid autoimmunity or a history of drug use, both …
The Effects Of 3-Benzoyl-1-Methyl-4-Phenyl-4 Piperidinolhydrochloride (C1), Indomethacin, Nimesulide And Rofecoxib On Cyclooxygenase Activities In Carrageenan-Induced Paw Edema Model, Yaşar Nuri̇ Şahi̇n, Berna Demi̇rcan, Hali̇s Süleyman, Hülya Aksoy, Hali̇se İnci̇ Gül
The Effects Of 3-Benzoyl-1-Methyl-4-Phenyl-4 Piperidinolhydrochloride (C1), Indomethacin, Nimesulide And Rofecoxib On Cyclooxygenase Activities In Carrageenan-Induced Paw Edema Model, Yaşar Nuri̇ Şahi̇n, Berna Demi̇rcan, Hali̇s Süleyman, Hülya Aksoy, Hali̇se İnci̇ Gül
Turkish Journal of Medical Sciences
The aim of this study was to investigate the effects of 3-benzoyl-1-methyl-4-phenyl-4-piperidinol-hydrochloride (C1), which is a structural and also non-classical isomer of bis Mannich base, bis (3-aryl-3-oxo-propyl) methylamine hydrochlorides (B1), on cyclooxygenase (COX) activities in 48 rats with inflammation by using carrageenan-induced paw edema, and to compare its effect with other non-steroidal anti-inflammatory drugs (NSAIDs). Materials and methods: Experimental animals were supplied by the Center of Experimental Research and Practice in Ataturk University. The animals were housed and fed in the laboratory (normal room temparature, food and water) under standard conditions. Rats were randomly assigned to eight groups (n = …
Adrenergic And Cholinergic Responses Of The Tracheal Smooth Muscle Is Enhanced During Estrus Phase In Rat, M. Kasim Çayci, Yasemi̇n Aydin, Kubi̇lay Uzuner
Adrenergic And Cholinergic Responses Of The Tracheal Smooth Muscle Is Enhanced During Estrus Phase In Rat, M. Kasim Çayci, Yasemi̇n Aydin, Kubi̇lay Uzuner
Turkish Journal of Medical Sciences
The aim of this study was to evaluate influences of hormonal changes during rat estrous cycle on airway responsiveness to bronchoconstrictor and bronchodilator agents. Materials and methods: The study was performed in 5 groups of rat tracheal smooth muscle obtained during proestrus, estrus, metestrus, and diestrus phases of the estrous cycle, as well as the ovariectomized group (n:8/group). Cumulative acetylcholine contractions ranging from 10^{-8} to 10^{-3} M bath doses and the cumulative isoproterenol relaxations ranging from 10^{-8} to 10^{-3} M precontracted with 10^{-5} M of acetylcholine were recorded on isolated tracheas placed in a computerized tissue bath system. Results: Acetylcholine-induced …
Evaluation Of Oxidant/Antioxidant Status And Ecp Levels In Asthma, Ömer Emecen, Berri̇n Berçi̇k İnal, Füsun Erdenen, Murat Usta, Hale Aral, Güvenç Güvenen
Evaluation Of Oxidant/Antioxidant Status And Ecp Levels In Asthma, Ömer Emecen, Berri̇n Berçi̇k İnal, Füsun Erdenen, Murat Usta, Hale Aral, Güvenç Güvenen
Turkish Journal of Medical Sciences
Inflammatory and immune cells, such as eosinophils, macrophages, and neutrophils, generate more reactive oxygen species in patients with asthma than they do in healthy individuals, and oxygen radicals contribute to tissue injury in asthma. We aimed to measure total oxidant status (TOS) and antioxidant status (TAS) in order to assess oxidative and antioxidative capacity. Eosinophil cationic protein (ECP), total IgE, and eosinophils (%) were measured to evaluate the level of inflammation. Materials and methods: The study included 56 non-smoking asthma patients that were followed-up at the respiratory disease and allergy outpatient clinics, where they received ongoing treatment for 5 months …
Dermatoglyphics As Markers Of Prenatal Disturbances In Schizophrenia: A Case-Control Study, Bi̇rsen Özyurt, Ahmet Songur, Mustafa Sarsilmaz, Ömer Akyol, Mustafa Namli, Reha Demi̇rel
Dermatoglyphics As Markers Of Prenatal Disturbances In Schizophrenia: A Case-Control Study, Bi̇rsen Özyurt, Ahmet Songur, Mustafa Sarsilmaz, Ömer Akyol, Mustafa Namli, Reha Demi̇rel
Turkish Journal of Medical Sciences
Several studies have reported the importance of dermatoglyphics as markers of a prenatal disturbance in patients with schizophrenia. Due to the fact that finger- and handprints are formed by the end of the second trimester, they may provide clues to disturbances in early development. The aim of this study was to determine specific dermatoglyphical frequencies in a sample of patients with schizophrenia and normal controls. Materials and methods: Fingerprints and palm prints were obtained from 45 schizophrenic patients as well as 45 healthy controls. The dermatoglyphic patterns on the fingers (total finger ridge count [TFRC]) and palms (a-b, b-c, and …
Evaluation Of Coping Strategies, Social Support, And Depressive Symptoms In Spouses Of Patients With Hematological Cancer, Safi̇ye Özkan, Yasemi̇n Kutlu
Evaluation Of Coping Strategies, Social Support, And Depressive Symptoms In Spouses Of Patients With Hematological Cancer, Safi̇ye Özkan, Yasemi̇n Kutlu
Turkish Journal of Medical Sciences
The purpose of this study was the evaluation of coping strategies, social support, and depressive symptoms in spouses of patients with hematological cancer. Materials and methods: A descriptive design was used in current study. The study was carried out at the hematology clinic of 2 university hospitals located in İstanbul. The convenience sample consisted of 150 spouses of patients who had hematological cancer. The data were collected through structured face-to-face interviews using a questionnaire form, the "Ways of Coping" Questionnaire, the Multidimensional Perceived Social Support Scale, and Beck Depression Inventory. Percentage t-tests and Pearson's product moment correlation were used to …
Nitric Oxide And Trace Metals In Relation To Haemoglobin F Concentration In Nigerian Sickle Cell Disease Patients, John Ayodele Olaniyi, Olatubosun Ganiyu Arinola
Nitric Oxide And Trace Metals In Relation To Haemoglobin F Concentration In Nigerian Sickle Cell Disease Patients, John Ayodele Olaniyi, Olatubosun Ganiyu Arinola
Turkish Journal of Medical Sciences
Sickle cell disease (SCD) is an inherited haemoglobin (Hb) disorder associated with vaso-occlusive events, oxidative stress, high energy demand, and endothelial dysfunction. The endothelium plays a central role in the regulation of vascular homeostasis by releasing nitric oxide (NO) among other factors. Therefore, the objective of this study was to measure plasma levels of NO, trace metals, and HbF in SCD patients. Materials and methods: Plasma levels of NO, Zn, Mg, Mn, Se, Cu, Fe, Haemoglobin F (HbF) were measured in 59 steady state SCD patients referred to the Department of Haematology, University College Hospital, Ibadan, Nigeria and 35 age/sex …
Characterization Of Chitosan In Acetic Acid: Rheological And Thermal Studies, Esam A. El-Hafian, Elham S. Elgannoudi, Azizah Mainal, Abdul Haamid Bin Yahaya
Characterization Of Chitosan In Acetic Acid: Rheological And Thermal Studies, Esam A. El-Hafian, Elham S. Elgannoudi, Azizah Mainal, Abdul Haamid Bin Yahaya
Turkish Journal of Chemistry
This study examined the influence of temperature, concentration, shearing time, and storage time on the rheological properties, i.e. the dynamic viscosity and shear stress, as a function of shear rate of chitosan solubilized in weakly acid solutions. The results showed that shear thinning behavior (pseudoplastic non-Newtonian behavior) was pronounced at temperatures from 20 to 50 °C, but was more remarkable at lower temperature. In addition, the activation energy value derived from ln \eta vs. 1/T data was found to be 20.86 kJ mol^{-1}. When the effect of concentration was studied, the shear thinning behavior was pronounced at all concentrations. The …
Enhanced Adventitious Shoot Regeneration From Aerial Stem Explants Of Ginger Using Tdz And Its Histological Studies, Adinkudikuyyal Lincy, Bhaskaran Sasikumar
Enhanced Adventitious Shoot Regeneration From Aerial Stem Explants Of Ginger Using Tdz And Its Histological Studies, Adinkudikuyyal Lincy, Bhaskaran Sasikumar
Turkish Journal of Botany
A protocol for direct plantlet regeneration from aerial stem explants of ginger (Zingiber officinale Rosc.) has been developed. Adventitious shoots and roots were regenerated from in planta aerial stem explants of 2 ginger varieties viz. var. 'Jamaica' and var. 'Varada'. Maximum shoot and root regeneration were observed in the cultures containing TDZ and IBA (1:1; 1:0.1 mg L-1) in both varieties. Cultures containing TDZ alone showed poor shoot and root formation. Histological studies revealed that the shoot initials originated from the primary thickening meristem and apical meristem, while the root primordial originated from the primary thickening meristem present in the …
Male Individuals In Cultivated Fritillaria Persica L. (Liliaceae): Real Androdioecy Or Gender Disphasy?, Elisa Mancuso, Lorenzo Peruzzi
Male Individuals In Cultivated Fritillaria Persica L. (Liliaceae): Real Androdioecy Or Gender Disphasy?, Elisa Mancuso, Lorenzo Peruzzi
Turkish Journal of Botany
In the last twenty years the growing number of studies about the reproductive biology in angiosperms has brought to light new cases of andromonoecy and androdioecy, the rarest sexual models among flowering plants. Female-sterile sexual systems, especially within order Liliales and family Liliaceae, often seem to occur in the particular form of size/age dependent sex allocation, known as "gender disphasy". The presence of male individuals of Fritillaria persica (Liliaceae) is here documented. Comparative morphological and functional sexual expression of this species, among males and hermaphrodites, was investigated by means of flowers counting, morphometric measurements of plants and pollen-grains, pollen viability …
Tetanus In An Intensive Care Unit Of A Turkish Hospital: Patient Analysis Of A 6-Year Period, Behi̇ce Kurtaran, Emre Karakoç, Aslihan Candevi̇r, Süheyla Kömür, Ayşe Seza İnal, Fi̇li̇z Ki̇bar, Yeşi̇m Taşova, Neşe Saltoğlu, Hasan Sali̇h Zeki̇ Aksu
Tetanus In An Intensive Care Unit Of A Turkish Hospital: Patient Analysis Of A 6-Year Period, Behi̇ce Kurtaran, Emre Karakoç, Aslihan Candevi̇r, Süheyla Kömür, Ayşe Seza İnal, Fi̇li̇z Ki̇bar, Yeşi̇m Taşova, Neşe Saltoğlu, Hasan Sali̇h Zeki̇ Aksu
Turkish Journal of Medical Sciences
To retrospectively evaluate the clinical features of patients admitted to the medical intensive care unit (ICU) of our hospital between January 2001 and May 2007 due to tetanus. Materials and methods: Patient vaccination history, incubation period, nosocomial infections, noninfectious conditions, mortality, and length of stay in the ICU and hospital were documented. Results: Fifteen tetanus patients were admitted during the 6-year period. Mean age of the patients (9 male, 6 female) was 60 ± 13 years. Median length of stay was 42 days (range: 30-77 days) for survivors and 7 days (range: 1-59 days) for non-survivors. Mortality was consequent to …
Histopathologic Changes In The Rabbit Submandibular Gland After 5-Fluorouracil Chemotherapy, Oktay Özel, Abdullah Ayçi̇çek, Fethullah Kenar, Fatma Aktepe, Ramazan Sargin, Mustafa Deni̇z Yilmaz, Fevzi̇ Sefa Dereköy
Histopathologic Changes In The Rabbit Submandibular Gland After 5-Fluorouracil Chemotherapy, Oktay Özel, Abdullah Ayçi̇çek, Fethullah Kenar, Fatma Aktepe, Ramazan Sargin, Mustafa Deni̇z Yilmaz, Fevzi̇ Sefa Dereköy
Turkish Journal of Medical Sciences
To determine the early-stage effects of 5-fluorouracil (5-FU) on the histology of the submandibular gland. Materials and methods: The study included 30 New Zealand rabbits. They were divided into 3 groups. No drugs were administered to group 1 (control group), and 5-FU was administered for 5 days to group 2 and for 10 days to group 3. Submandibular gland excision was then performed. Histopathological examination was performed with hematoxylin-eosin staining, apoptosis was determined based on TUNEL staining, and cell proliferation was examined using the PCNA antibody. Results: While no granular change was seen in group 1, granular change was observed …
Effect Of Passive Smoking On The Development Of Chronic Obstructive Pulmonary Disease In Southeastern Turkey, Teki̇n Yildiz, Füsun Topçu, Yusuf Çeli̇k, Levent Akyildiz, Güngör Ateş, Di̇lek Durak
Effect Of Passive Smoking On The Development Of Chronic Obstructive Pulmonary Disease In Southeastern Turkey, Teki̇n Yildiz, Füsun Topçu, Yusuf Çeli̇k, Levent Akyildiz, Güngör Ateş, Di̇lek Durak
Turkish Journal of Medical Sciences
To determine the effect of passive smoking on the development of chronic obstructive pulmonary disease (COPD) among persons who spend a long time in cafes. Materials and methods: The study sample included 348 male smokers who were older than 40 years and spend a long time in cafes. The questions were derived from the European Coal and Steel Community (ECSC) questionnaire. We also inquired about the nature of cafe visits (hours/day, visits/week, visits/month). Results: COPD was found in 18.1% (63/348 subjects) of the smokers aged >=40 years. In these 63 subjects, based on spirometry results, the rate of mild and …
Programmable Design And Implementation Of A Chaotic System Utilizing Multiple Nonlinear Functions, Recai̇ Kiliç, Fatma Yildirim Dalkiran
Programmable Design And Implementation Of A Chaotic System Utilizing Multiple Nonlinear Functions, Recai̇ Kiliç, Fatma Yildirim Dalkiran
Turkish Journal of Electrical Engineering and Computer Sciences
In addition to exhibiting a rich variety of bifurcation and chaos via tuning parameters, a chaotic system introduced by Sprott can be modeled and realized with a fixed main system block and many different changeable nonlinear function blocks such as piecewise-linear function, cubic function and other trigonometric functions. This system is very suitable for implementing a programmable chaos generator according to its changeable nonlinearity. This paper presents a FPAA (Field Programmable Analog Array)-based programmable implementation of this system. Nonlinear function blocks used in this chaotic system are modeled with FPAA programming and a model is rapidly changed for realizing other …
Mineral And Whole-Rock Geochemistry Of The Kestanbol Granitoid (Ezine-Çanakkale) And Its Mafic Microgranular Enclaves In Northwestern Anatolia: Evidence Of Felsic And Mafic Magma Interaction, Sabah Yilmaz Şahi̇n, Yüksel Örgün, Yildirim Güngör, A. Feti̇ Göker, A. Haydar Gülteki̇n, Zeki̇ye Karacik
Mineral And Whole-Rock Geochemistry Of The Kestanbol Granitoid (Ezine-Çanakkale) And Its Mafic Microgranular Enclaves In Northwestern Anatolia: Evidence Of Felsic And Mafic Magma Interaction, Sabah Yilmaz Şahi̇n, Yüksel Örgün, Yildirim Güngör, A. Feti̇ Göker, A. Haydar Gülteki̇n, Zeki̇ye Karacik
Turkish Journal of Earth Sciences
The Miocene Kestanbol granitoid, in Ezine-Çanakkale, Turkey, is one of post-collision granitoids of western Anatolia, which have been related to the the late Cretaceous collision between the Anatolide-Tauride platform and the Pontides. Magmatism began during the early Miocene, with coeval alkaline to calc-alkaline plutonism and volcanism, controlled by the regional tectonic evolution. The Kestanbol pluton intruded regionally metamorphosed basement rocks. Volcanic and volcano-clastic sedimentary rocks overlie the pluton, which is bounded in the west and east by major faults. The pluton is frequently cut by felsic and mafic dykes and includes mafic microgranular enclaves (MMEs) that are mixing products of …
The Impact Of Tsunamis On The Island Of Majorca Induced By North Argelian Seismic Sources, José A. Álvarez-Gómez, Maitane Olabarrieta, Mauricio González, Luís Otero, Emilio Carreño, José M. Martínez-Solares
The Impact Of Tsunamis On The Island Of Majorca Induced By North Argelian Seismic Sources, José A. Álvarez-Gómez, Maitane Olabarrieta, Mauricio González, Luís Otero, Emilio Carreño, José M. Martínez-Solares
Turkish Journal of Earth Sciences
The north of Algeria is the main earthquake-related tsunami generation zone that threatens the Balearic Islands. In this work we review the major seismic series of the area -the 1980 El Asnam and the 2003 Boumerdes-Zemmouri earthquakes– in order to obtain a probable worst characteristic earthquake rupture. We estimate rupture dimensions of 55 km x 16 km, reaching the fault plane a depth of 13 km. The dip and rake have been taken as constants, with values of 50° and 90° respectively, while the strike is adjusted to the local tectonic structure. With these characteristics a magnitude M_w= 7.3 earthquake …
Thermal Evolution Of The Permo−Triassic Karakaya Subduction-Accretion Complex Between The Biga Peninsula And The Tokat Massif (Anatolia), Ilaria Federici, William Cavazza, Aral Okay, Olivier Beyssac, Massimiliano Zattin, Sveva Corrado, Francesco Dellisanti
Thermal Evolution Of The Permo−Triassic Karakaya Subduction-Accretion Complex Between The Biga Peninsula And The Tokat Massif (Anatolia), Ilaria Federici, William Cavazza, Aral Okay, Olivier Beyssac, Massimiliano Zattin, Sveva Corrado, Francesco Dellisanti
Turkish Journal of Earth Sciences
The results of the combined application of a series of analytical methods (clay mineralogy, vitrinite reflectance, Raman microspectroscopy) placed tight constraints on the thermal evolution of the Karakaya Complex of northern Anatolia, a mostly Permo-Triassic subduction-accretion complex resulting from the progressive closure of the Palaeotethys. The thermal evolution of the Karakaya Complex is the result of Permian-Triassic subduction-accretion processes, and was not significantly affected by later Alpine-age tectonism, as shown by Liassic shallow-water siliciclastic and carbonate deposits overlying unconformably the Karakaya Complex which did not undergo any significant burial. The Lower Karakaya Complex, comprising metabasite and subordinate marble and phyllite, …
Mathesia Mainelli (Hippuritoidea, Monopleuridae) From The Late Aptian−Albian Of The Mediterranean Region: A Revision, Jean-Pierre Masse, Mükerrem Fenerci̇-Masse
Mathesia Mainelli (Hippuritoidea, Monopleuridae) From The Late Aptian−Albian Of The Mediterranean Region: A Revision, Jean-Pierre Masse, Mükerrem Fenerci̇-Masse
Turkish Journal of Earth Sciences
Agria darderi Astre and Mathesia terticolloquiirudistarum Mainelli represent a single taxonomic entity: Mathesia darderi (Astre). Mathesia is characterized by an erect posterior myophoral plate and an anterior myophoral crest in the LV, the RV myophores being on the shell wall. A peculiar shell structure is observed in the RV: the junction between the outer calcitic shell layer and the inner formerly aragonitic shell layer is scalloped or festooned and usually includes longitudinal tubes. The overall morphological traits and myocardinal organisation of Mathesia are similar to those of Debrunia, although the latter lacks the scalloped or tubular inner shell features of …
Taxonomy Of Rudists From The Campanian Transgressive Sediments Of Brašljevica, Donje Orešje And Sv. Martin, Northern Croatia, Alan Moro, Vlasta Cosovic, Josip Benic, Jasmina Dokmanovic
Taxonomy Of Rudists From The Campanian Transgressive Sediments Of Brašljevica, Donje Orešje And Sv. Martin, Northern Croatia, Alan Moro, Vlasta Cosovic, Josip Benic, Jasmina Dokmanovic
Turkish Journal of Earth Sciences
Rudists are common fossils in transgressive Upper Cretaceous deposits in three localities placed in northwestern part of Croatia. Their appearances coincide with the beginning of a transgressive sequence through floatstones-thickets. Within the rudist community, Vaccinites Fischer 1887, Hippurites Lamarck 1801 and Hippuritella Douvillé 1908 could be differentiated according to their general or generic morphological elements. The age of deposits was obtained from the Sr-isotope composition of the rudist shells as well as the micro- and nannofossil community from sediments overlying the rudists-bearing sediments at the Donje Oresje and Brasljevica localities. According to this data the age of the transgressive sediments …
Morphology, Taxonomy And Lifestyle Of The Maastrichtian Rudist Bivalve Thyrastylon, Simon Francis Mitchell
Morphology, Taxonomy And Lifestyle Of The Maastrichtian Rudist Bivalve Thyrastylon, Simon Francis Mitchell
Turkish Journal of Earth Sciences
The rudist bivalve Thyrastylon is redescribed based on extensive material collected from Jamaica. The new material shows that the left valve contains slits, and that this is the diagnostic feature of the genus. The genus is redefined as follows: a radiolitid rudist with no ligamental infold, stretched cellular microstructure and compact layers in the outer layer of the right valve; the radial bands are partially infolded into the shell layer of the right valve; the left valve has oscules developed above the radial bands and has concentric, slit-like pores that penetrate the shell and open out onto the inner part …
Campanian-Maastrichtian Pseudosabinia From Turkey: Descriptions And Taxonomic Problems, Saci̇t Özer
Campanian-Maastrichtian Pseudosabinia From Turkey: Descriptions And Taxonomic Problems, Saci̇t Özer
Turkish Journal of Earth Sciences
Specimens of taxa assigned to Pseudosabinia Morris & Skelton, collected from the Campanian-Maastrichtian sequences of different regions of Turkey such as the Kocaeli Peninsula, Amasya, Bayburt (Pontides), Sivas, Malatya, Elazığ (eastern Anatolian platform) and Kahta-Adıyaman and Yaylaçiftliği-Antakya (northernmost part of the Arabian platform), are determined and the taxonomic statuses of the species are discussed. Pseudosabinia klinghardti (Böhm) uniquely presents all the characteristic features of the genus. Other species and subspecies assigned to the genus 'Pseudosabinia' rtanjica (Pejovic), 'Pseudosabinia' serbica (Kühn & Pejovic), 'Pseudosabinia' rtanjica triangularis (Karacabey) and 'Pseudosabinia' rtanjica tunisiensis (Philip) lack the cellular prismatic structure of the outer shell …
Distribution And Abundance Of Rudist Bivalves In The Cretaceous Platform Sequences In Egypt: Time And Space, Mohamed S. Zakhera
Distribution And Abundance Of Rudist Bivalves In The Cretaceous Platform Sequences In Egypt: Time And Space, Mohamed S. Zakhera
Turkish Journal of Earth Sciences
As the rudist bivalves represent important organic buildups in the Cretaceous platform sequences, this study emphasizes vertical and spatial distribution of this group of bivalves in the geographic divisions of Egypt, including Western Desert, Eastern Desert and Sinai. Rudists are encountered in different rock facies ranging from mudstones to carbonates. About sixty eight species belong to twenty one genera are reported from Egypt. They belong to six families: Requieniidae, Monopleuridae, Caprotinidae, Caprinidae, Hippuritidae, and Radiolitidae. The Radiolitidae is the most diverse family, comprising eleven genera and fifty-one species, dominated by species of Radiolites, Eoradiolites and Durania. The elevator morphotype of …
The Morphology And Function Of The Upper Valve Of Vaccinites Vesiculosus (Woodward), Dietrich Schumann
The Morphology And Function Of The Upper Valve Of Vaccinites Vesiculosus (Woodward), Dietrich Schumann
Turkish Journal of Earth Sciences
The evolutionary transformation of the upper valve (UV) to a probable particle filter system in some hippuritid genera belongs to the most drastic changes in pelycipod shell structures. The basic architecture of this product is well known since long times. Again discussed is the functional role of the canal system. The bottom of the canals is very smooth. The canal system of Vaccinites vesiculosus is completely roofed by a particular graceful sieve. A water exchange between the canals did not exist. The uppermost part of the upper valve (the sieve) most probably was an endoskeleton. The upper valve was not …
The Clinical And Polysomnographic Features In Complex Sleep Apnea Syndrome, Handan İnönü, Tansu Ulukavak Çi̇ftçi̇, Oğuz Köktürk
The Clinical And Polysomnographic Features In Complex Sleep Apnea Syndrome, Handan İnönü, Tansu Ulukavak Çi̇ftçi̇, Oğuz Köktürk
Turkish Journal of Medical Sciences
Complex sleep apnea syndrome (CompSAS) is characterized by the onset of central apneas or a Cheyne-Stokes breathing pattern in some patients with obstructive sleep apnea syndrome (OSAS) who were treated with continuous positive airway pressure (CPAP). The etiology of CompSAS is unclear, but derangement of respiratory control has been proposed. We sought to compare clinical and polysomnography (PSG) features of patients with CompSAS and OSAS. Materials and methods: Records of PSG were evaluated in a total of 270 patients, retrospectively. CPAP titration was prescribed in patients with an apnea-hypopnea index (AHI) of >=15. Patients who developed a central AHI of …