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Registros recuperados: 159
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A Comparative Study of Variation of the Pterion of Human Skulls from 13th and 20th Century Anatolia International Journal of Morphology
Ilknur,Ari; Mustafa,Kafa Ilker; Sinan,Bakirci.
The pterion is a commonly used anthropologic and neurosurgical landmark defined as the junction of the sphenoid, temporal, parietal and frontal bones. It is commonly classified into four types based on sutural pattern: sphenoparietal, in which the sphenoid and parietal bones are in direct contact; frontotemporal, in which the frontal and temporal bones are in direct contact; stellate, in which all four bones come into contact at a point; and epipteric, in which a small sutural bone is found between the parietal bone and the greater wing of the sphenoid bone. In the present study, 44 Anatolian skulls from two different eras, Byzantine (13th century) and contemporary (20th century), were investigated for morphology and location of the pterion. Sphenoparietal...
Tipo: Journal article Palavras-chave: Anatolian; Anthropology; Calvarial sutures; Epipteric bone; Morphometry.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400051
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A Morphometric Study of the Extraocular Muscles International Journal of Morphology
Villarreal-Silva,Eliud Enrique; Hinojosa Amaya,José Miguel; Bazaldua Cruz,Juan José; Martínez Fernández,David; Elizondo-Omaña,Rodrigo Enrique; Guzmán López,Santos.
Extraocular muscles are important references in strabismus surgery and in placement of intraorbital devices. We analyzed extraocular muscles morphometry and possible anatomical variances of 20 orbits. We report the length, width, and points of insertion of the extraocular muscles. No anatomical variations in length, width and points of insertion were found. With regard to the rectus muscles, it was found that the superior rectus and lateral rectus are the longest muscles and that the width difference between the superior and inferior rectus is greater than that between the medial and lateral rectus and that the point of insertion of the rectus muscles has a variable morphology. The superior oblique muscle was smaller in caliber than the inferior oblique,...
Tipo: Journal article Palavras-chave: Extraocular muscles; Morphometry; Orbits.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000100049
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A multi-approach analysis of the genetic diversity in populations of Astyanax aff. bimaculatus Linnaeus, 1758 (Teleostei: Characidae) from Northeastern Brazil Neotropical Ichthyology
Pamponet,Vanessa de Carvalho Cayres; Carneiro,Paulo Luiz Souza; Affonso,Paulo Roberto Antunes de Mello; Miranda,Viviam Souto; Silva Júnior,Juvenal Cordeiro; Oliveira,Claudine Gonçalves de; Gaiotto,Fernanda Amato.
Few reports are available about the ichthyofauna of typical semi-arid rivers, although the regional diversity has been constantly threatened by human activities, mainly related to impoundment and construction of dams. The goal of the present work was to evaluate using different methods, the population genetic structure of a characin fish, Astyanax aff. bimaculatus, widespread throughout hydrographic basins of Bahia, Northeastern Brazil. Morphological (meristic and morphometric data), cytogenetic (karyotype and Ag-NOR), and molecular (RAPD and SPAR) analyses were carried out in specimens collected upstream and downstream of Pedra Dam, in the main channel of Contas River (Contas River Basin), and in the Mineiro stream, which belongs to the adjacent Recôncavo...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morphometry; Cytogenetics; RAPD; Population structure; Contas River.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400010
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A Quantitative Assessment of the Morphological Characteristics of BeWo Cells as an in vitro Model of Human Trophoblast Cells International Journal of Morphology
Abaidoo,C.S; Warren,M. A; Andrews,P. W; Boateng,K. A.
In order to study the detailed morphology of trophoblast cells during human implantation, BeWo cells were cultured as spheroids in suspension culture. These cultures were then processed for light and electron microscopical examination. The present study showed that the BeWo spheroids consist of two cell types which are cytotrophoblast-like and syncytiotrophoblast-like. The cells with larger nuclear diameter made up only about 1% of the cell population and appear to be those of syncytiotrophoblast. Therefore the predominant cell type of the BeWo spheroids appeared to be relatively undifferentiated and cytotrophoblast-like. About 10% of the BeWo cells in the present study were mitotic, indicating a highly proliferative population. Total cell number increased...
Tipo: Journal article Palavras-chave: BeWo; Trophoblast; Morphometry; Spheroids.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400011
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A Radiological Investigation on the Hand Development in Human Fetuses Throughout the Fetal Period and an Evaluation Performed in Terms of its Clinical Importance Hand Development International Journal of Morphology
Raziye,Desdicioglu; Ceren,Uguz; Kadir,Desdicioglu; Osman,Sulak; Mehmed Ali,Malas.
It was aimed in this study that the morphometric development of the hand in human fetuses throughout the fetal period be radiologically investigated and the clinical importance of this period be evaluated. A total of 50 fetuses with no external pathology or anomaly, and the ages of which varied between 20-40 gestational weeks were incorporated into the study. The fetuses were separated into groups according to gestational weeks, trimesters and months. After the general external measurements of the fetuses were performed, mammography and hand radiographies of the fetuses were shot in the way that their hands would be in a pronational position. Afterwards, the morphometric measurements of the hands were performed with the help of a digital caliper through...
Tipo: Journal article Palavras-chave: Fetus; Hand; Fetal development; Morphometry; Radiology.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400057
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A Study on the Structure and Morphologic Development of Calcaneal Tendon and Triceps Surae Muscle in Human Fetuses during the Fetal Period and the Evaluation of Clinical Importance of Calcaneal Tendon International Journal of Morphology
Kadir,Desdicioglu; Ceren,Uguz; Busra,Sakalli; Esra,Koyuncu; Ali,Malas Mehmet.
It was aimed that the morphometric development of calcaneal tendon and the structures building it up in human fetuses during the fetal period be anatomically studied and that its clinical importance be evaluated. The study comprised a total of 102 fetus legs (51 human fetuses: 26 male and 25 female) whose ages varied between 15-40 gestational week, without external pathology or anomaly. The fetuses were divided in groups according to gestational weeks, trimesters and months. In the wake of the general external measurements of fetuses, leg dissection was performed. Afterwards, the morphometric parameters of gastrocnemius muscle, soleus muscle and calcaneal tendon were measured. The averages and the standard deviations of the measured parameters were...
Tipo: Journal article Palavras-chave: Fetal development; Morphometry; Calcaneal tendon; Anatomy.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300019
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Acromial Morphology and Subacromial Architecture in a South African Population International Journal of Morphology
Naidoo,N; Lazarus,L; Osman,S. A; Satyapal,K. S.
The acromion is classically described as one of the three scapular processes. Its antero-inferior aspect has been identified as the prime region of rotator cuff pathology. The purpose of this study was to determine the morphologic state of the acromion and the relative subacromial architecture within a South African population. The sample series comprised the morphological observation of one hundred and eighty-two scapulae specimens (n= 182). The classification scheme as stated by Bigliani et al. (1986) was employed. The morphometric architecture of the subacromial space was also investigated (n= 120). (a) Acromial Type: (i) Type I (flat inferior surface) 34.6%; (ii) Type II (curved inferior surface) 51.1%; (iii) Type III (hooked inferior surface) 14%. (b)...
Tipo: Journal article Palavras-chave: Acromion; Morphology; Subacromial architecture; Morphometry.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300002
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Acromial Morphometric Analysis Using Imaging Software International Journal of Morphology
Crahim,Lucas Fernandes; Nagato,Akinori Cardozo; Rocha,Carolina de Lourdes Julião Vieira; Silva,Marco Aurélio dos Santos; Bandeira,Ana Carla Balthar; Ferreira,Tereza Aparecida; Bezerra,Frank Silva.
The aim of this study was to accurately measure acromial morphology in order to describe the anatomical patterns of its subtypes and to conduct a survey of the literature regarding the relationships between morphological subtypes and their related diseases. We photographed scapulae from the Institute of Anatomy, University Severino Sombra, and analyzed the images using Image-J Software®. The average acromial angle was 139.23° ± 2.781, with no significant difference between the right and left sides. There was a positive correlation between the acromial angle and the angle of the spine of the scapula. The correlation mentioned above plays an important role in disorders of the shoulder-particularly impingement syndrome-which reinforces the importance of...
Tipo: Journal article Palavras-chave: Acromial morphology; Acromioclavicular; Impingement syndrome; Morphometry.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000100053
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Action of Trivalent Chromium on Rat Liver Structure. Histometric and Haematological Studies International Journal of Morphology
Silva,Rogério Ferreira da; Lopes,Ruberval A; Sala,Miguel A; Vinha,Dionísio; Regalo,Simone C. H.; Souza,Ana Maria de; Gregório,Zita Maria de O.
The trace mineral trivalent chromium (Cr3+) is an essential nutrient involved in the regulation of carbohydrate, lipid and protein metabolism via an enhancement of insulin action. The present work had as objective to characterize histopathologically and histometrically the hepatic alterations of female Wistar rats, determined by the chromium III administration in drinking water. Adult rats received ration and drinking water ad libitum containing 300 or 500 mg/l chromium III during 4 months. Control animals received only water and ration. All animals were sacrificed by lethal dose of anesthetic. Samples of liver were fixed in 10% formalin for 24 h. Tissues for microscopical pathology were processed using standard procedures. Paraffin sections prepared at 6...
Tipo: Journal article Palavras-chave: Liver; Rat; Chromium; Morphometry; Hematology.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000300014
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Age-related changes in quality and fertility of porcine semen Biol. Res.
Tsakmakidis,Ioannis A; Khalifa,Tarek AA; Boscos,Costas M.
The aim of this study was to investigate the effect of boar age on quality traits and fertility of liquid-stored semen. Boars were allocated into 3 age groups: 7-10 months (young), 18-33 months (mature), 51-61 months (old). Ejaculates of > 200x10(6) sperm/ml and 85% total motile sperm were extended to 30x10(6) sperm/ml, stored at 17-18 °C and used within 12-24 h for artificial insemination (AI) of 2062 multiparous sows. After 24 h of storage, aliquots of diluted semen were assessed for sperm progressive motility (SPM), incidence of sperm chromatin instability (SCI), proportion of live morphologically normal sperm (LMNS) and head morphometry of LMNS. The results showed that young boars had higher percentages of SCI and lower proportions of LMNS than...
Tipo: Journal article Palavras-chave: Boar age; Boar semen; Morphology; Morphometry; Sperm chromatin.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000400009
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An Osteometric Evaluation of the Jugular Foramen International Journal of Morphology
Ishwarkumar,S; Naidoo,N; Lazarus,L; Pillay,P; Satyapal,K. S.
The jugular foramina (JF) are bilateral openings situated between the lateral part of the occipital bone and the petrous part of the temporal bones in the human skull. It is a bony canal transmitting neurovascular structures from the posterior cranial fossa through the base of the skull to the carotid space. Since the JF depicts variations in shape, size, height and volume between different racial and gender groups, along with distinctive differences in laterality from its intracranial to extracranial openings, knowledge of the JF may be necessary to understand intracranial pathologies. Therefore, the purpose of this study was to evaluate the morphometric measurements of the jugular foramen. Various morphometric parameters of the JF and its relation to...
Tipo: Journal article Palavras-chave: Jugular foramen; Morphometry; Surrounding structures.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100039
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An Osteometric Evaluation of the Mandibular Condyle in a Black KwaZulu-Natal Population International Journal of Morphology
Ishwarkumar,S; Pillay,P; DeGama,B. Z; Satyapal,K. S.
The mandibular condyle is the rounded protuberance that articulates with the mandibular fossa to form the temporomandibular joint (TMJ). The shape of the mandibular condyle may be classified according to five basic shapes viz. flattened, convex, angled, rounded and concave. Previous research indicated that variation in the shape and size of the mandibular condyle, exists and that population-specific differences may also occur. This study aimed to document the shapes and size of the mandibular condyle and determine their relationship with regard to sex, age and race (if any). The morphometric and morphological parameters of the mandibular condyle were measured and assessed in 54 dry mandible specimens (n= 108). The Wedel et al. (1978) classification scheme...
Tipo: Journal article Palavras-chave: Mandibular condyle; Mandibles; Osteology; Morphometry; Morphology.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300005
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An Osteometric Study on Humerus International Journal of Morphology
Aydin Kabakci,A. D; Buyukmumcu,M; Yilmaz,M. T; Cicekcibasi,A. E; Akin,D; Cihan,E.
Humerus is the longest and thickest bone of the upper limb. As a long bone, it has two epiphysis and diaphysis. In this study, we aimed to conduct morphometric measurements belonging to human humerus. This study was conducted on 60 humerus (28 right, 32 left) in collections of Necmettin Erbakan University Meram Medicine Faculty Anatomy Laboratory. Digital calipers, osteometric board and precision scales for humerus bone measurements were used. Measurements were classified as measurements of diaphysis and proximal and distal epiphysis of humerus. Each bone weight was determined. Also nutrient foramen number and localization was determined. In this study, it was determined that mean right humerus length 30.41±1.73 mm, mean left humerus length 30.04±2.39 mm....
Tipo: Journal article Palavras-chave: Humerus; Morphometry; Osteometry.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100036
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Análisis de la unidad poblacional de la merluza de cola (Macruronus magellanicus). Estudio de las variaciones morfológicas somáticas y de los otolitos en relación con su distribución geográfica OceanDocs
Jerez, B.; Hernández, D.R.; Giussi, A.R.; Malaspina, A.M..
To determine the existence of different population units of longtail hake (Macruronus magellanicus) of the Argentine Sea, the meristic and morphometric characters of 861 specimens from two different areas were studied measuring 24 body distances with the landmark methods. Besides, the relation among weight, width and thickness of 806 pairs of sagittae otoliths as a function of length and sex of individuals was analyzed. Using the General Linear Model, the Principal Component Analysis and the Multivariate Analysis of Variance the fitted morphometric variables, the meristic characters and their relation to the Area and Sex factors were assessed. The variability observed does not show any conclusive evidence about the existence of more than one stock in the...
Tipo: Journal Contribution Palavras-chave: Stock identification; Meristic counts; Morphometry; Otoliths.
Ano: 2013 URL: http://hdl.handle.net/1834/5490
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Análisis de las variaciones morfológicas de la Isla Santa Clara en los últimos 30 años, con énfasis en el área de la Estación Científica CPFG Héctor Chiriboga OceanDocs
Martillo, C.; Moreira, L.; Pazmiño, A.; Chunga, K.; Rosero, J.; Calderón, M.; Romero, A..
La Isla Santa Clara se encuentra ubicada a la entrada de Guayaquil, es un Humedal de Importancia Internacional en el Marco de la Convención RAMSAR, habiendo sido declarada como sitio RAMSAR N° 1142, el 2 de febrero del 2002. En ella se encuentra construída la estación científica CPFG Héctor Chiriboga Guerra, donde se toman datos oceanográficos y meteorológicos. La Isla Santa Clara tiene un origen tectónico, pues es producto de un esfuerzo comprensivo del Pleistoceno Superior, ocasionado por el sistema de fallas transcurrentes Caracas-Guayaquil. Debido a procesos geológicos y ambientales, la Isla Santa Clara ha sufrido una erosión muy acelerada calculado en 1’824.710m3 entre los años 1980 a 2000, alrededor de toda la isla, y de 80,000m3 alrededor del sector...
Tipo: Journal Contribution Palavras-chave: Morphometry; Tectonics; Global positioning systems; Islands; Tectonics; Global positioning systems; Islands; Http://aims.fao.org/aos/agrovoc/c_31904; Http://aims.fao.org/aos/agrovoc/c_36733; Http://aims.fao.org/aos/agrovoc/c_3962.
Ano: 2009 URL: http://hdl.handle.net/1834/3371
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Análisis espacio-temporal del estado nutricional de larvas de anchoíta Engraulis anchoita. Relación con las características hidrográficas y la disponibilidad de alimento OceanDocs
Díaz, M.V..
Nutritional condition studies allow the assessment of physiological state of each larva and thus, the establishment of favourable nursery areas which provide better survival and growth. In the present work, morphometrical, histological and biochemical techniques were employed to assess nutritional condition of anchovy, Engraulis anchoita, larvae captured in the Argentine Sea. Its results were complemented with oceanographic data and information about zooplankton abundances, both prey and predators of anchovy larvae. Anchovy larvae abundance and distribution would be mainly determined by physico-chemical variables. Even though no significant differences were found in larval nutritional condition among the studied areas, larval condition was slightly better...
Tipo: Theses and Dissertations Palavras-chave: Fish larvae; Nutritional requirements; Morphometry; Histology; Hydrography; Nursery grounds; Fish larvae; Nutritional requirements; Hydrography; Nursery grounds; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5277; Http://aims.fao.org/aos/agrovoc/c_3727; Http://aims.fao.org/aos/agrovoc/c_25438.
Ano: 2010 URL: http://hdl.handle.net/1834/3548
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Anatomic Parameters of the Left Coronary Artery: an Angiographic Study in a South African Population International Journal of Morphology
Ajayi,N. O; Lazarus,L; Vanker,E. A; Satyapal,K. S.
An understanding of the left coronary artery (LCA) anatomy is important for accurate diagnosis and therapeutic intervention in the management of coronary arterial diseases. This angiographic study aims to document the parameters of the LCA that may be of importance in the diagnosis and treatment of coronary artery diseases. An analysis of 151 coronary angiograms obtained from the cardiac catheterization laboratory in the eThekwini Municipality area of KwaZulu-Natal, South Africa was performed. The mean length and diameter of the LCA were 10.4±4.1 mm (range 2.8-23.9 mm) and 3.8±0.8 mm (range 2.1-6.5 mm), respectively. The mean angle of division between the two main branches was 86.2°±26.1° (range 27°-68.5°). There was a positive correlation between the...
Tipo: Journal article Palavras-chave: Coronary arteries; Left coronary artery; Morphology; Morphometry; Coronary dominance.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400039
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Anthropometry of the Black Adult Tibia: A South African Study International Journal of Morphology
Naidoo,N; Lazarus,L; Ajayi,N. O; Satyapal,K. S.
The tibia is the medial long bone of the leg and is characterized by a shaft and two expanded extremities. Despite the recent advent of tibial bone graft harvesting, the tibia has also been confirmed to be of great forensic significance. As this appears to be the only tibial dry bone study done in Southern Africa, this study aimed to investigate morphological and morphometric parameters that are of clinical and anthropometric importance. Morphological and morphometric examination of 302 adult tibial bone specimens of Black South Africans obtained from the osteological bank of the Discipline of Clinical Anatomy at the University of KwaZulu-Natal was performed. The sample consisted of 168 males and 134 females with an age range of 15 to 87 years old. The...
Tipo: Journal article Palavras-chave: Tibia; Nutrient Foramen; Soleal Line; Morphometry.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200030
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Biología y ecología reproductiva de las especies del Género Bathyraja (Elasmobranchii, Rajidae) en la plataforma continental Argentina OceanDocs
Scenna, L.B..
Se estudia la biología y ecología reproductiva de las ocho especies de Bathyraja presentes en la plataforma continental argentina (Atlántico S.O.), a través del análisis del tamaño corporal, las cápsulas de huevos, el desarrollo de los embriones, la talla de madurez sexual, las variaciones en las condiciones reproductivas, las áreas de puesta y la segregación espacial de los individuos. El material examinado provino de campañas de investigación llevadas a cabo por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) entre 34º40'S y 54º30'S, desde septiembre 2003 hasta octubre 2007. La información presentada en el trabajo demuestra que las especies del Género Bathyraja en la plataforma argentina maduran a una talla alta en relación a la Lt...
Tipo: Theses and Dissertations Palavras-chave: Reproduction; Biogeography; Morphometry; Fish eggs; Sexual maturity; Spawning grounds; Marine fish; Rajidae; Marine environment.
Ano: 2011 URL: http://hdl.handle.net/1834/4776
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Body shape variation in meiotic gynogenetic and triploid sea bass, Dicentrarchus labrax ArchiMer
Peruzzi, Stefano; Wiborg-dahle, Stine; Haffray, Pierrick; Chatain, Beatrice; Primicerio, Raul.
A method of geometric morphometrics was used to characterize body shape variation in meiotic gynogenetic and triploid sea bass in comparison with diploid controls. A total of 13 coordinate landmark data were recorded on the profile of 34-month-old control (n = 81), gynogenetic (n = 117) and triploid (n = 131) siblings generated from two females (A and B). Three main axes of morphometric variation were consistent, and these accounted for 60.8 and 57.6% of the total variability in females A and B, respectively. There were significant shape deviations of triploid and gynogenetic fish relative to the controls, and differences were particularly evident in the progeny of one female. Overall, triploids displayed a more slender shape than diploids, whereas...
Tipo: Text Palavras-chave: Body shape variability; Morphometry; Geometry of Procrustes distance; Triploidy; Gynogenesis; European sea bass; Dicentrarchus labrax.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00025/13651/10757.pdf
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