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The sella turcica and the hypophyseal fossa should be considered different entities, the latter being part of the former. Their morphology and dimensions correlate to some extent with those of the contained pituitary gland and have, for this reason, attracted the interest of anatomists and radiologists. With the application of MRI, however, these data are of limited use in the diagnosis of pituitary disorders, although they remain valuable with regard to a microsurgical approach to the hypophysis. The proposed morphometric method was applied to 20 dry skulls. We first made casts of the corresponding sellae. Their volumes were then measured by immersion. The frontal section of each hypophyseal fossa was obtained through its deepest point and magnified. The Cartesian co-ordinates of the contour of the section were used to evaluate the corresponding area and centroid. The volume of each fossa was finally obtained by the use of Pappus’ theorem applied to solids of rotation. The volumes of the sellae obtained as above ranged from 460 mm³ to 1570 mm³ with a mean value of 835 mm³. These figures are comparable to those reported from previous authors. To our knowledge the method described has enabled a close approximation of the volumes of the hypophyseal fossae to be made for the first time. These volumes ranged from 24 mm³ to 300 mm³, with a mean value of 157 mm³. Similar numerical methods might be applicable in vivo by the use of MR imaging.
In the course of myopia many anatomical changes in the structure of the eyeball take place. These changes surface during early childhood. It is unclear if these changes form during the stage of foetal life. The aim of the paper was to examine whether changes which predestine to the formation of myopia occur during the prenatal period. 26 eyeballs of humans aged between 4 and 8 months of foetal life, fixed in a 10% solution of formalin were examined. The axial, equatorial and corneal dimensions were measured with Vernier calipers. The data were elaborated statistically by the Student t test, the significance level being p < 0.05. It was observed that in the course of maturation the axial length, equatorial and corneal diameter of the foetal eye increase. It was also observed that the dimensions of the eyeball expand symmetrically in all directions. This indicates that there is no predisposition to the development of myopia in the period of prenatal life.
As a result of research conducted by the author, there were 120,200 hectares of areas identified in Polish cities that require regeneration, which constitutes a little more than 21% of all invested and urbanized areas. In terms of surface area and frequency of occurrence, the main problem is the one, which concerns old downtown districts. Drab prefabricated towerblock housing estates which, according to many municipal authorities are in a crisis, occupy a much smaller surface area of 14,000 hectares, yet the number of their residents approximates that of the old downtown districts and amounts to ca. 2.1 million people. The conducted research shows that there are 4.4 million people, who live presently in degraded areas and in areas that need to be regenerated. Also 24,000 hectares of post-industrial areas were identified. Other estimates indicate that there may even be twice as much of those post-industrial areas (40,000 hectares) but due to their contained nature and limited accessibility municipal authorities are not always aware of their existence. Based on the estimates of PKP S.A. Railways authorities one can assume that already today ca. 15,000 hectares of post-railway areas might be subjected to regeneration and reuse, including 100 multi-mode railway stations, which are critical for urban development. In 140 Polish cities and towns there were ca. 11,800 hectares of post-military areas identified, the majority of which have already been developed or adapted for urban purposes. Still there remain ca. 4,000 hectares of areas that require specific actions.
Neurological symptoms as the result of non-typical course of superficial cerebral veins are described in available literature very rarely. The case described below indicates that in some circumstances the compression symptoms derived from the cerebral cortex may be incredibly more serious than their anatomical reasons. In our observation a young woman was described complaining of paroxysmal numbness of the left upper limb with paraesthesiae of the left side of the face, the left eye and left half of the tongue. The patient said that in childhood she used to have paroxysmal itching of the left hand. She also said that CT of the head made a few years ago after a car accident was without pathological changes. Neurological examination, x-ray of the skull and EEG test performed during first visit proved normal. After one year of the disease, Jackson-type epilepsy, combined with loss of sensation of the left half of the face for the first time, was present. Neurological and ophthalmological examination of the bottom of the eye proved normal. Skull x-ray was normal. Then disturbances of the vision in the left half of the field appeared. EEG was still in norm. The MRI test showed the asymmetry in the course and dilated superficial vein between the basis of the right temporal lobe and the tentorium of the cerebellum. The diameter of this vein was 2.5 mm, but there were no vascular malformations. Bottom of the eye was normal, but in the field of vision the white and red colours were dominated.
Body mass of the European bison Bison bonasus (Linnaeus, 1758) was determined for 152 animals (86 males, 66 females) from captive breeding centre in Białowieża and for 492 (248, 244) animals from the free-ranging herd in the Białowieża Forest. Body measurements were taken for a total of 472 bison (204, 268). Age-related changes in body mass and measurements of 375 bison (165, 210) were analysed. Bison body mass was significantly correlated with age. Captive bison were heavier than those from a free-ranging herd. Measurements showed the changes in bison body structure in the postnatal development. All measurements were highly correlated with age and mass of the animals and increased most intensively during the first year of life. Sex-related differences in body mass and measurements were most pronounced in bison > 3 years old. Physical development of females ends at the age of 5 years, and that of males at the age of 7 years.
Ulnar dimensions were measured in 14 species of armadillos (Xenarthra: Dasy- podidae). An index of f'ossorial ability (IFA) was constructed, relating the length of the olecranon process to the remaining length of the ulna. For comparative purposes, the same measurements were taken in 14 other species of mostly South American mammals belonging to 3 orders and 11 families. The fossorial habits of these mammals were classified into 3 categories: (1) species mostly cursorial and non-digging; (2) species that often dig, but to which digging plays no essentia! part in their alimentary strategy and are not burrowers; and (3) species that are burrowers. IFA means of the studied mammal orders were compared using one-way analysis of variance on log-trans formed data. Bivariate size allametry between ulnar dimensions and body mass was assessed by fitting (least squares and geometric mean) linear regressions of log-transformed data. It is concluded that the IFA discriminates among the species according to their fossorial habits within orders, but it is not equally useful in distinguishing fossorial species between orders. In armadillos, the relationships between ulnar dimensions and body mass are isometrical, Finally, the IFA is independent of body size.
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