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Search Results: 1 - 10 of 340924 matches for " Michalkiewicz E.L. "
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Adrenocortical tumors in children
Ribeiro R.C.,Michalkiewicz E.L.,Figueiredo B.C.,DeLacerda L.
Brazilian Journal of Medical and Biological Research , 2000,
Abstract: Childhood adrenocortical tumors (ACT) are rare. In the USA, only about 25 new cases occur each year. In Southern Brazil, however, approximately 10 times that many cases are diagnosed each year. Most cases occur in the contiguous states of S o Paulo and Paraná. The cause of this higher rate has not been identified. Familial genetic predisposition to cancer (p53 mutations) and selected genetic syndromes (Beckwith-Wiedemann syndrome) have been associated with childhood ACT in general but not with the Brazilian counterpart. Most of the affected children are young girls with classic endocrine syndromes (virilizing and/or Cushing). Levels of urinary 17-ketosteroids and plasma dehydroepiandrosterone sulfate (DHEA-S), which are abnormal in approximately 90% of the cases, provide the pivotal clue to a diagnosis of ACT. Typical imaging findings of pediatric ACT consist of a large, well-defined suprarenal tumor containing calcifications with a thin capsule and central necrosis or hemorrhage. The pathologic classification of pediatric ACT is troublesome. Even an experienced pathologist can find it difficult to differentiate carcinoma from adenoma. Surgery is the single most important procedure in the successful treatment of ACT. The role of chemotherapy in the management of childhood ACT has not been established although occasional tumors are responsive to mitotane or cisplatin-containing regimens. Because of the heterogeneity and rarity of the disease, prognostic factors have been difficult to establish in pediatric ACT. Patients with incomplete tumor resection or with metastatic disease at diagnosis have a dismal prognosis. In patients with localized and completely resected tumors, the size of the tumor has predictive value. Patients with large tumors have a much higher relapse rate than those with small tumors.
Adrenocortical tumors in children
Ribeiro, R.C.;Michalkiewicz, E.L.;Figueiredo, B.C.;DeLacerda, L.;Sandrini, F.;Pianovsky, M.D.;Sampaio, G.;Sandrini, R.;
Brazilian Journal of Medical and Biological Research , 2000, DOI: 10.1590/S0100-879X2000001000013
Abstract: childhood adrenocortical tumors (act) are rare. in the usa, only about 25 new cases occur each year. in southern brazil, however, approximately 10 times that many cases are diagnosed each year. most cases occur in the contiguous states of s?o paulo and paraná. the cause of this higher rate has not been identified. familial genetic predisposition to cancer (p53 mutations) and selected genetic syndromes (beckwith-wiedemann syndrome) have been associated with childhood act in general but not with the brazilian counterpart. most of the affected children are young girls with classic endocrine syndromes (virilizing and/or cushing). levels of urinary 17-ketosteroids and plasma dehydroepiandrosterone sulfate (dhea-s), which are abnormal in approximately 90% of the cases, provide the pivotal clue to a diagnosis of act. typical imaging findings of pediatric act consist of a large, well-defined suprarenal tumor containing calcifications with a thin capsule and central necrosis or hemorrhage. the pathologic classification of pediatric act is troublesome. even an experienced pathologist can find it difficult to differentiate carcinoma from adenoma. surgery is the single most important procedure in the successful treatment of act. the role of chemotherapy in the management of childhood act has not been established although occasional tumors are responsive to mitotane or cisplatin-containing regimens. because of the heterogeneity and rarity of the disease, prognostic factors have been difficult to establish in pediatric act. patients with incomplete tumor resection or with metastatic disease at diagnosis have a dismal prognosis. in patients with localized and completely resected tumors, the size of the tumor has predictive value. patients with large tumors have a much higher relapse rate than those with small tumors.
Library Services Standards Implemented in Colleges of Education in Nigeria
E.L. Adebayo
Pakistan Journal of Social Sciences , 2012,
Abstract: The study examines library services standards implemented in colleges of education in Nigeria. Data for the study was collected with the aid of structured questionnaire from 197 respondents in 58 colleges of education. Data analysis was by the use of frequency, percentage and chi square. Findings of study revealed that the colleges rendered basic library services as recommended by National Commissions for Colleges of Education (NCCE) such as Book loaning, Reference, Photocopying, Current awareness, Bindery. It was however revealed that colleges did not render indexing and abstracting services. For adequate teacher education at the colleges of education, it is therefore recommended that indexing and abstracting services must be adopted and taken more seriously.
Comparative Analysis of Library Automation Between Federal and State Colleges of Education in Nigeria
E.L. Adebayo
Asian Journal of Information Technology , 2012,
Abstract: There is no doubt that automation of library services will enhance efficiency. This is because automation is a computerized system. The National Commissions for Colleges of Education in Nigeria set laid down guidelines for Colleges of Education to follow regarding automation. This study compared library automation between Federal and State Colleges of Education in Nigeria. Data was collected from 197 librarians in 58 colleges of Education in Nigeria. Findings revealed that Colleges of Education in Nigeria are not automated. This has grave implications for teacher education. It is therefore recommended that Colleges of Education libraries be computerized.
Indonesian colonization of West- and central Africa?
E.L. Heins
Bijdragen tot de Taal-, Land- en Volkenkunde , 1966,
Abstract:
Essentially nonlinear theory of microdeformations in medium with periodic structure
Aero E.L.
Theoretical and Applied Mechanics , 2002, DOI: 10.2298/tam0229001a
Abstract: Essentially nonlinear theory of micro and macro deformations of a medium with cardinally rearranging periodic structure is presented using a new model of double continuum with variable local topology. In a frame of proposed model there are two deformation modes (macroscopic and microscopic) when some threshold is reached. Some problems such as twin transitions, catastrophic deformation waves, shock and tilting bifurcation waves are considered. An exact solution describing elasto plastic fragmentation of medium is constructed also when double periodic domain superstructure are formed. There are solid rotons of opposite signs with singular defects between them. They appear in a critical field of macroscopic deformations of pure shear. When this bifurcation point is overcome then dimensions of domains are stabilized. The letter depend on value of macroscopic deformations. Some criterion of global stability is established. .
Magnesium in clinical practice
E.L. Trisvetova
Rational Pharmacotherapy in Cardiology , 2012,
Abstract: Magnesium is a macronutrient that is needed for normal body functions. Magnesium deficiency resulting from the influence of exogenous and endogenous factors, is diagnosed by clinical manifestations, resembling the known disease. Magnesium deficiency corrected with the magnesium therapy. Studies show the effectiveness of magnesium orotate for many cardiovascular diseases.
System analysis in optimizing the choice of treatment for patients with complicated forms of chronic venous insufficiency of the lower extremities
Kukolnikov E.L.
Saratov Journal of Medical Scientific Research , 2011,
Abstract: Methods: to optimize treatment of patients with complicated forms of chronic venous insufficiency of our method was applied systems analysis, proposed by Th. Saaty (1993), and was called the method of analysis of hierarchies . Results: the results indicate a direct relationship to the choice of methods for the treatment of patients with complicated forms of chronic venous insufficiency of the influence of individual actors and the goals of each. Conclusion: applying the analytic hierarchy process in selecting a method of treatment in patients with complicated forms of chronic venous insufficiency of the lower extremities can improve the quality of life of patients and reduce the frequency of disability, reduce the rate of loss of ability to self-service, as well as reduce the costs of treating both the patient and medical institution
Ultracool dwarf legacy science with ESA's Euclid mission
Martin E.L.
EPJ Web of Conferences , 2013, DOI: 10.1051/epjconf/20134715003
Abstract: Euclid is an medium-class ESA mission that will carry out a 5 year survey of the extragalactic sky. The science drivers for the survey are cosmological and extragalactic. Nevertheless, the unprecedented depth over such a large area and the diffraction limited spatial resolution of the Euclid survey will have a long lasting impact in many fields of Astrophysics. This paper outlines the legacy science that will come out from Euclid in the field of ultracool dwarfs. In particular, it is foreseen that Euclid will increase the number of resolved ultracool binaries by more than an order of magnitude, and hence it will provide a stringent constraint on models of formation of very low-mass objects. Euclid can also find significant number of rare objects such as young free-floating planets or population III ultracool dwarfs.
Atmospheres and surfaces of small bodies and dwarf planets in the Kuiper Belt
Schaller E.L.
EPJ Web of Conferences , 2010, DOI: 10.1051/epjconf/201009021
Abstract: Kuiper Belt Objects (KBOs) are icy relics orbiting the sun beyond Neptune left over from the planetary accretion disk. These bodies act as unique tracers of the chemical, thermal, and dynamical history of our solar system. Over 1000 Kuiper Belt Objects (KBOs) and centaurs (objects with perihelia between the giant planets) have been discovered over the past two decades. While the vast majority of these objects are small (< 500 km in diameter), there are now many objects known that are massive enough to attain hydrostatic equilibrium (and are therefore considered dwarf planets) including Pluto, Eris, MakeMake, and Haumea. The discoveries of these large objects, along with the advent of large (> 6-meter) telescopes, have allowed for the first detailed studies of their surfaces and atmospheres. Visible and near-infrared spectroscopy of KBOs and centaurs has revealed a great diversity of surface compositions. Only the largest and coldest objects are capable of retaining volatile ices and atmospheres. Knowledge of the dynamics, physical properties, and collisional history of objects in the Kuiper belt is important for understanding solar system formation and evolution.
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