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Search Results: 1 - 10 of 582738 matches for " A D Olusesi "
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A Correlation Of Symptomatology With Nasal Smear Eosinophilia In Non-Infectious Chronic Rhinitis Preliminary Report
A D Olusesi, M A Said, E J Amodu
Nigerian Journal of Clinical Practice , 2007,
Abstract: Objective: To correlate subjective and objective clinical features with nasal smear cytology findings in non-infectious chronic rhinitis. Design: An analysis of prospectively collected data of consecutive patients with non-infectious seasonal and perennial rhinosinusitis seen at a tertiary health institution. Methodology: Clinical assessments including Visual Analog Scale (VAS) scoring of presenting symptoms of 45 patients suffering from non-infectious chronic rhinosinusitis are measured. Subjects had a medical questionnaire regarding presence and duration of symptoms, family history of atopy or allergy, occupational exposure to allergens, provocative agents, and medication usages. Subjects had detail Ear, Nose, and Throat assessment, and nasal secretions were analyzed for eosinophils counts and statistically correlated with clinical parameter. Result: A total of 45 patients were recruited. Age range was 13 to 71 years (SD 11.516). 73% (n=33) were females while 27% (n=12) were males. The modal occupation was homemaking (24%, n=11). 38% (n=17) had family history of atopy, while 13% (n=6) had family history of allergy. Symptoms were perennial in 62% (n=28) and seasonal in 38% (n=17). 9% (n=4) of the subjects keep pets at home, while 40% (n=18) grow flowers or trees around the house. All subjects gave a history of identifiable provocative agents. There is positive correlation of itchy nose with total symptom score. There was negative history of occupational exposure to allergens in all subjects. The average subjective symptom score are Sneezing (6.3), Itchy nose (6.1), Nasal obstruction (6.2) and Runny nose (6.7). There is a high positive correlation of sneezing with runny nose (r = 0.51), but poor correlation with nasal obstruction (r = 0.15). There is negative correlation of total individual symptom score with keeping of pets (r = -0.24) or growing of flowers or trees around house (r = -0.039). There is also low correlation of total symptom score with family history of atopy (r = 0.06). There is positive correlation of total symptom score with number of provocative agents identified (r = 0.34). There is low positive correlation of nasal smear eosinophilia with total symptom score (r = 0.030) and itchy nose score (r = 0.038). Nasal smear eosinophilia show negative correlation with sneezing score (r = -0.076). Conclusion: The best predictors of nasal smear eosinophilia in non-infectious chronic rhinosinusitis are itchy nose score and Individual Total Symptom (ITS) score.
Introducing Intelligent Agents Potential into a competent Integral Multi-Agent Sensor Network Simulation Architecture Design  [PDF]
A. Filippou, D. A. Karras
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.67B008

During this research we spot several key issues concerning WSN design process and how to introduce intelligence in the motes. Due to the nature of these networks, debugging after deployment is unrealistic, thus an efficient testing method is required. WSN simulators perform the task, but still code implementing mote sensing and RF behaviour consists of layered and/or interacting protocols that for the sake of designing accuracy are tested working as a whole, running on specific hardware. Simulators that provide cross layer simulation and hardware emulation options may be regarded as the last milestone of the WSN design process. Especially mechanisms for introducing intelligence into the WSN decision making process but in the simulation level is an important aspect not tackled so far in the literature at all. The herein proposed multi-agent simulation architecture aims at designing a novel WSN simulation system independent of specific hardware platforms but taking into account all hardware entities and events for testing and analysing the behaviour of a realistic WSN system. Moreover, the design herein outlined involves the basic mechanisms, with regards to memory and data management, towards Prolog interpreter implementation in the simulation level.

“Life, Memory, Recognition and Aging” of Grey Tin  [PDF]
A. D. Styrkas
Journal of Materials Science and Chemical Engineering (MSCE) , 2016, DOI: 10.4236/msce.2016.411001
Abstract: It was shown that tin has two types of memory: 1) “memory of the structure” about of the event when it was in the α configuration, and 2) “memory of recognition (discern)” whereby tin recognises that an object with which it in contact, was previously in contact with substances of a particular type (“infection”). Transformations of metallic white tin into the grey semiconductor occur with the help of either small pieces of grey tin or other substances isomorphous with grey tin [1] [2] [3]. These pieces (when pressed into white tin) initiate phase transition (by “infection”) from white tin into grey tin. Once the tin is transformed into its grey form, it retains a “memory” about this after it is transferred back into white tin. Thus, for second and subsequent phase transformations, there is no need for external initiators to be used. The tin has the “memory of recognition” too—when the tin can recognises that an object with which it is in contact, was previously in contact with the “infection”. This phenomenon is concerned with the aging of tin: firstly, with the loss of “memory of the structure” of tin of the event when it was in the grey tin configuration, and, secondly, with the loss of “memory of recognition” of tin whereby the tin recognises that an object with which it is in contact, was previously in contact with substances of a particular type. Factors that effect the aging of tin has been studied in detail and an explanation of the mechanism of action of these factors has been suggested.
The Role of Water Motion in Natural Processes  [PDF]
A. D. Styrkas
Journal of Materials Science and Chemical Engineering (MSCE) , 2017, DOI: 10.4236/msce.2017.54003
Abstract: A study of the behavior of water during its movements under mechanical shaking is presented. It is shown that rhythmic shaking of water with 1Hz causes the same rhythmic effects in a periodic [H+] growth and products with higher positive potential. This paper discusses the role of water motion in nature.
Serum lipid growth curves for children and adolescents in predicting adult dyslipidemia (Data from the Slovak Lipid Community Study)  [PDF]
Roman Alberty,Dá?a Albertyová
Advances in Biological Chemistry (ABC) , 2013, DOI: 10.4236/abc.2013.35045
Abstract: Objectives: To create age-and sex-specific growth curves for serum lipids in Slovak children and adolescents, and to compare age-and sex-specific cut-off points with the currently recommended procedure using a single set of risk values for the whole child and adolescent population. Methods: Data were extracted from a cross-sectional Slovak Lipid Community Study conducted in 2005-2007; 873 healthy children and adolescents aged 7-18 years were selected for this study. Smoothed percentile curves were generated by LMS Pro software. Results: All lipid parameters (except for total cholesterol and LDL-cholesterol in girls) were higher in puberty than in adolescence, with the lowest serum lipids between the ages of 15 and 16 years. Mean triglyceride levels were higher in girls than in boys in all age groups. At the age of 18 years, about 19% boys and 25% girls had borderline and 6% boys and 15% girls had elevated total cholesterol. Elevated triglyceride levels were seen in 13% of boys and 11% of girls while abnormally low levels of HDL-cholesterol were found in 17% of boys and 10% of girls. Conclusions: The results of this study suggest that 1) age and gender play a strong role in lipid measurements in children and adolescents, 2) Slovak children and adolescents have a relative high proportion of abnormal lipid levels, and 3) age-and sex-specific cut-off points for serum lipids could be used to identify children and adolescents with an elevated risk of dyslipidemia in adulthood.
Evaluation of Onchocerciasis: A Decade of Post Treatment with Ivermectin in Zainabi and Ririwai Doguwa Local Government Area of Kano State  [PDF]
D. A. Sufi, Tukur Zainab
Advances in Entomology (AE) , 2015, DOI: 10.4236/ae.2015.31001
Abstract: Rapid Assessment Method (RAM) were carried out to assess the current situation of Onchocerciasis after repetition of annual community directed distribution of Ivermectin in Zainabi and Ririwai of Doguwa Local Government area of Kano State. Certain manifestations, like nodules, leopard skin and blindness, were used to measure the endemicity level in the community. The subjects of 30 - 50 years who are engaged in rural occupation, resident in that community, were examined for the presence of nodules, skin lesion and blindness. The common manifestation in both communities is nodules with 3 (3.40%) and 2 (3.44%). Leopard skin and blindness were found in Zainabi with 2 (2.27%) and 2 (2.27%). The manifestation of Onchocerciasis was found in older age groups of 49 - 70 and 50 - 69 respectively, which give an indication that the disease was eliminated in the community due to mass distribution of Ivermectin in the previously known endemic community. We recommend mass distribution of Mectizan in other identified endemic foci.
A Short Vector Solution of the Foucault Pendulum Problem  [PDF]
I. A. Ciureanu, D. Condurache
World Journal of Mechanics (WJM) , 2015, DOI: 10.4236/wjm.2015.52002
Abstract: The paper studies the motion of the Foucault Pendulum in a rotating non-inertial reference frame and provides a closed form vector solution determined by vector and matrix calculus. The solution is determined through vector and matrix calculus in both cases, for both forms of the law of motion (for the Foucault Pendulum Problem and its “Reduced Form”). A complex vector which transforms the motion equation in a first order differential equation with constant coefficients is used. Also, a novel kinematic interpretation of the Foucault Pendulum motion is given.
Phenolic Compositions of Litchi Shoot Tips and Zygotic Embryos Collected in Different Months and Their Effects on the Explant Browning and Its Control  [PDF]
D. K. Das, A. Rahman
Advances in Anthropology (AA) , 2016, DOI: 10.4236/aa.2016.64008
Abstract: In the research it was examined the changes in total phenolic contents and seven major phenolic compounds (gallic acids, +() catechin, catechol, Chlorogenic acid, o-coumaric acid, rutin and quercetin) of two litchi cultivars (Purbi and Bedana) shoot tips and fruits (for zygotic embryos) collected in different months, in order to determine their effects on the explants browning during establishment stage of shoot tip culture. The concentrations of phenolic compounds varied depending on the cultivars and the months. Phenolic compounds showed various correlation coefficients with the explants browning. Total phenolic content and some individual phenolic compounds including +() catechin, catechol, gallic acid, chlorogenic acid and rutin quantified in this study showed significant positive correlations with the explants browning, while o-coumaric acid and quercetin did not exhibit any significant one. According to our results, explants browning are affected by the phenolic compounds at different ranges. In both litchi cultivars, shoot tips and fruits (for zygotic embryos) collected in March exhibited the lowest explants browning during the establishment stage as compared to those collected in the other months. So it may be possible to increase the success of shoot tip and zygotic embryo culture with the selection of the most suitable terms of explants collection. Browning of explants could be controlled by the use of antioxidants both in semi-solid and liquid culture.
The Barrier Properties of Flake-Filled Composites with Precise Control of Flake Orientation  [PDF]
A. Tsiantis, T. D. Papathanasiou
Materials Sciences and Applications (MSA) , 2017, DOI: 10.4236/msa.2017.83016
Abstract: Additive manufacturing, especially in the form of 3D printing, offers the exciting possibility of generating heterogeneous articles with precisely controlled internal microstructure. One area in which this feature can be of significant advantage is in diffusion control, specifically in the design and fabrication of microstructures which optimize the rate of transport of a solute to and from a contained fluid. In this work we focus on the use of flakes as diffusion-control agents and study computationally and theoretically the effect of orientation on the barrier properties of flake-filled composites. We conducted over 1500 simulations in two-dimensional, doubly-periodic unit cells each containing up to 3000 individual flake cross-sections which are randomly placed and with their axes forming an angle (\"\") with the direction of macroscopic diffusion. We consider long-flake systems of aspect ratio (\"\") 100 and 1000, from the dilute (\"\") and into the concentrated (\"\") regime. Based on the rotation properties of the diffusivity tensor, we derive a model which is capable of accurately reproducing all computational results (\"\" and \"\"). The model requires as inputs the two principal diffusivities of the composite, normal and parallel to the flake axis. In this respect, we find the models of Lape et al. [1] and Nielsen [2] form an excellent combination. Both our model and our computational data predict that at \"\" the quadratic dependence of the Barrier Improvement Factor (BIF) on (\"\") is lost, with the BIF approaching a plateau at higher values of (\"\"). This plateau is lower as (\"\") increases. We derive analytical estimates of this maximum achievable BIF at each level of misalignment; these are also shown to be in excellent agreement with the computational results. Finally we show that our computational results and model are in agreement with experimental evidence at small values of
Performance of a 270 MW Gas Power Plant Using Exergy and Heat Rate  [PDF]
D. A. Aderibigbe, G. Osunbor
Energy and Power Engineering (EPE) , 2019, DOI: 10.4236/epe.2019.112002
Abstract: The performance of a 270 MW (9 × 30 MW) AES Corporation barge mounted gas turbine power plant in Nigeria is evaluated using the heat rate and entropy generation by the components of the plant to characterize the irreversibility in each component when operating at different loads between 90% and 25%. The power plants have the peculiarity that three of the plants were supplied by three (3) different Original Equipment Manufacturers (OEM); A, B and C. This study is sequel to the fact that the gas turbines were the first independent power plants in the country and after more than fifteen years of operation, it is reasonable to evaluate the performance of the major components. By analyzing the thermodynamic performance of these components, the study demonstrates the utility value of exergy efficiency as an important parameter in the evaluation of major components in a gas power plant. Exergy efficiency is shown to be an important parameter in ranking the power plant components, identifying and quantifying the possible areas of reduction in thermodynamic losses and improvement in efficiencies. A new relationship is derived to demonstrate the correlation between the exergy efficiency and the heat rate of a 30 MW gas power plant. The prediction of the derived relationship correlates well with the observed operational performance of the 30 MW power plants. The combustion chamber in each of the plants provides the maximum exergy destruction during operation. Its exergy efficiency is shown to exhibit good correlation with its energy efficiency and the plant rational exergy. The implication is that from an operational and component selection viewpoint in the specifications of a gas power plant, knowledge of the Heat Rate which is usually provided by the OEM is adequate to make a reasonable inference on the performance of some critical components of the plant.
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