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Search Results: 1 - 10 of 111847 matches for " Ogundoyin O "
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Spontaneous scrotal faecal fistula: A rare complication of incarcerated inguinal hernia in infancy
Sowande O,Adejuyigbe O,Ogundoyin O,Uba A
Journal of Indian Association of Pediatric Surgeons , 2006,
Abstract: Spontaneous scrotal faecal fistula is a rare complication of incarcerated inguino-scrotal hernia in the neonate and infants. Only five previous cases have been reported in the English medical literature. We report another case of a 28-day-old neonate, who presented with fecal fistula following prolonged incarceration of a right inguino-scrotal hernia. The etiology and management of this rare complication is discussed.
Pattern and outcome of childhood intestinal obstruction at a Tertiary Hospital in Nigeria
OO Ogundoyin, AO Afolabi, DI Ogunlana, TA Lawal, AC Yifieyeh
African Health Sciences , 2009,
Abstract: Background: Intestinal obstruction is a common cause of pediatric surgical emergency with a high morbidity and mortality in Africa. Methods: A retrospective review of cases managed from January 1996 to December 2005 at a teaching hospital in Southwestern, Nigeria was done to examine the pattern of causes of intestinal obstruction in children and the management outcome. Results: One hundred and thirty cases were seen over the study period with an age range of 2 hours to 14 years. Majority (61.24%) were infants, while 18.46% were neonates. Fifty-five cases (42.31%) were due to congenital causes while the rest were of acquired causes. The major causes of intestinal obstruction in the study were intussusception (29.23%), anorectal malformations (22.31%), obstructed inguinoscrotal hernia (16.92%) and Hirschsprungs disease (13.85%). Surgical site infection and sepsis were the commonest complications observed with an overall complication rate of 60.78%. The mortality rate was 3.08% and most (75%) occurred in neonates. Conclusion: While mortality as an outcome of management is low, the morbidity was very high in this study.
A review of typhoid perforation in a rural African hospital
EA Agbakwuru, ARK Adesunkanmi, SO Fadiora, OS Olayinka, AOA Aderonmu, OO Ogundoyin
West African Journal of Medicine , 2003,
Abstract: In Wesley Guild Hospital Ilesa in the South – West region of Nigeria a retrospective study of 105 consecutive cases operated upon for typhoid perforation between January 1988 and November 2001 was carried out. The ages of the patients were between 4 to 70 years with a mean age of 19.2 ± 8.81. There were 84 males (80%) and 21 females (20%) giving a ratio of 4:1. Diagnoses were based on clinical and radiological findings. All the patients had laparotomy after resuscitations with intravenous fluids, electrolytes replacement, broad spectrum antibiotics, Nasogastric intubation/suctioning and urethral catherterisation. There were five negative laparotomies (4.8%). Eighty patients (76.2%) had a single perforation, while the rest 20 had multiple perforations. The perforations were located between 7cm and 100cm from the ileo-Caecal junction. Apart from the patients who had resection and primary anastomosis, 95(90.5%) had 2 layered closure of the perforation. The most common complications were wound infections (26.7%). Intra-abdominal abscesses (9.5%) and would dehiscence (7.6%). The mortality rate was 16.2% showing a remarkable improvement in the West African Subregions.
Stress Loops Effect in Ductile Failure of Mild Steel  [PDF]
O.O. Oluwole
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2009, DOI: 10.4236/jmmce.2009.84026
Abstract: A simulation study of effect of stress on mild steel microstructure has revealed stress loops at areas of stress application which are believed to be the root cause of the ductile failure morphology (cup and cone) in ductile alloys under plane strain conditions. The areas of concentration of these stress loops were observed to be that of subsequent instability (or necking) observed in mild steel and other materials of low friction (flow) stress. Shear stress loops with angular bearing of 450 to the tensile axis were observed to instigate both the failure site and shear morphology in these materials. In plane stress conditions, shear was seen to be that of a wave shape running obliquely to area of stress application resulting in oblique necking observed in thin mild steel sheets.
Boundary Value Problem for an Operator-Differential Riccati Equation in the Hilbert Space on the Interval  [PDF]
O. O. Pokutnyi
Advances in Pure Mathematics (APM) , 2015, DOI: 10.4236/apm.2015.514081
Abstract: The paper is devoted to obtaining the necessary and sufficient conditions of the solvability of weakly perturbed boundary-value problems for the nonlinear operator-differential Riccati equation in the Hilbert space on the interval and whole line with parameter ?. We find the solution of the given boundary value problem which for ε = 0 turns in one of the solutions of generating boundary value problem. Solution of the generating problem is constructed with the using generalized operator in analytical form. Iterative process for finding of solutions of weakly nonlinear equation with quadratic error is constructed.
Vertex-transitive maps on a torus
O. Such
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE , 2011,
Abstract: We examine FVT (free, vertex transitive) actions of wallpaper groups on semiregular tilings. By taking quotients by lattices we then obtain various families of FVT maps on a torus, and describe the presentations of groups acting on the torus. Altogether there are 29 families, 5 arising from the orientation preserving wallpaper groups and 2 from each of the remaining wallpaper groups. We prove that all vertex-transitive maps on torus admit an FVT map structure.
Vertex-transitive maps on a torus
O. Such
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE , 2011,
Abstract: We examine FVT (free, vertex transitive) actions of wallpaper groups on semiregular tilings. By taking quotients by lattices we then obtain various families of FVT maps on a torus, and describe the presentations of groups acting on the torus. Altogether there are 29 families, 5 arising from the orientation preserving wallpaper groups and 2 from each of the remaining wallpaper groups. We prove that all vertex-transitive maps on torus admit an FVT map structure.
Definition of secret reasons of errors, appeared during aviation operators’ professional activity Определение скрытых причин происхождения ошибок, возникающих в профессиональной деятельности авиационных операторов ВИЗНАЧЕННЯ ПРИХОВАНИХ ПРИЧИН ПОХОДЖЕННЯ ПОМИЛОК, ЩО ВИНИКАЮТЬ У ПРОФЕС ЙН Й Д ЯЛЬНОСТ
O.?. Луппо,О.М. Ал?кс??в
Proceedings of National Aviation University , 2005,
Abstract: Development of discover secret reasons of error actions of aviation operators allows to define reasons of secret factors of error action in time and will give opportunity to develop more effective prevention measures in order to prevent mistake actions in time. Разработана система выявления скрытых причин ошибочных действий авиационных операторов, позволяющая своевременно определять причины и механизмы возникновения скрытых факторов, которые приводят к ошибочным действиям, и осуществлять более действенные профилактические мероприятия по их своевременному предотвращению. Розроблено систему виявлення прихованих причин помилкових д й ав ац йних оператор в, що дозволя сво часно визначати причини механ зми виникнення прихованих чинник в, як призводять до помилкових д й, та зд йснювати б льш д в проф лактичн заходи щодо х сво часного запоб гання.
НТЕГРАЦ Я ЗАСОБ В Д АГНОСТИКИ, ПРОГНОЗУВАННЯ КЕРУВАННЯ Р ВНЕМ БЕЗПЕКИ ПОЛЬОТ В Integration of diagnosis, prognosis and management level of safety Интеграция средств диагностики, прогнозирования и управления уровнем безопасности полетов
В.П. Харченко,O.?. Луппо,О.М. Ал?кс??в
Proceedings of National Aviation University , 2007,
Abstract: Розглянуто один з шлях в п двищення контролю за р внем безпеки польот в нтеграц я вс х засоб в форм у комплексних автоматизованих системах. Запропоновано виб р кращого вар анта засобу керування р внем безпеки польот в за допомогою комплексного автоматизованого застосування математичних моделей, методолог чних п дход в до виконання початкових етап в моделювання, концептуального проектування, формал зац алгоритм зац моделей. One of ways rise and control after a level of safety flights is integration of all facilities and forms in the complex automated systems. Acceptance of decision about the choice of the best forms management of mean safety flights level in such terms is erected to satisfaction a number of indexes, and in spite of their possible contradiction is a problem which it is possible to decide by means the complex automated use application of mathematical models, methodological approaches to implementation initial stages of design, conceptual design, formalization and algoritmizationi of models and bases management mean of safety flights level. Рассмотрен один из путей повышения и контроля за уровнем безопасности полетов - интеграция всех средств и форм в комплексных автоматизированных системах. Предлагается выбор лучшего варианта средства управления уровнем безопасности полетов с помощью комплексного автоматизированного применения математических моделей, методологических логических подходов к выполнению начальных этапов моделирования, концептуального проектирования, формализации и алгоритмизации моделей.
НОВ П ДХОДИ ДО КЛАСИФ КАЦ ПРИЧИН АВ АЦ ЙНИХ ПОД Й ТА НЦИДЕНТ В ЯК ЕФЕКТИВНИЙ ЗАС Б П ДВИЩЕННЯ БЕЗПЕКИ ПОЛЬОТ В New approaches to the classification of causes of aviation accidents and incidents as an effective means of improving safety Новые подходы к классификации причин авиационных происшестви
O.?. Луппо,О.М. Ал?кс??в
Proceedings of National Aviation University , 2007,
Abstract: Розглянуто класиф кац ю ав ац йних под й та нцидент в, що да змогу оц нити питому частку кожно структури в зниженн безпеки польот . Виявлено головн причини та частоту повторюваност ав ац йних под й та нцидент в. Оц нено ефективн сть ран ше розроблених проф лактичних заход в щодо попередження однотипних ав ац йних под й та нцидент в у майбутньому. Classification of accidents and incidents makes principle of hieratic collateral subordination, which determines separate classification of direct and main reasons that enables to estimate weight destiny of every structure in the decline of safety flight and expose most bottleneck in the aviation system. Exposure of main reasons and frequency of their repetition, for a concrete period, allows to define the role of each components in the decline of safety of flights and estimate efficiency of the before developed prophylactic measures from warning of the same type aviation events and incidents in a future. Рассмотрены классификация авиационных происшествий и инцидентов, что позволяет оценить удельную долю каждой структуры в снижении безопасности полете. Выявлены основные причины и частоту повторяемости авиационных происшествий и инцидентов. Оценена эффективность ранее разработанных профилактических мероприятий по предупреждению однотипных авиационных происшествий и инцидентов в будущем.
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