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FIXED POINTS SOLUTIONS OF GENERALIZED EQUILIBRIUM PROBLEMS AND VARIATIONAL INEQUALITY PROBLEMS
Shehu, Yekini,Collins, C. Obiora The Korean Society for Computational and Applied M 2010 Journal of applied mathematics & informatics Vol.28 No.5
In this paper, we introduce a new iterative scheme for finding a common element of the set of common fixed points of infinite family of nonexpansive mappings and the set of solutions to a generalized equilibrium problem and the set of solutions to a variational inequality problem in a real Hilbert space. Then strong convergence of the scheme to a common element of the three sets is proved. As applications, three new strong convergence theorems are obtained. Our theorems extend important recent results.
Chemical Profile and Cytotoxicity Activity of Stem-bark of Anacardium occidentale
Shehu, Abdullahi,Ponnapalli, Mangala Gowri,Mahboob, Mohd,Prabhakar, Pitta Venkata,Olatunji, Gabriel Ademola The Korean Society of Pharmacognosy 2022 Natural Product Sciences Vol.28 No.2
Column chromatographic fractionation of the methanol and ethyl acetate extracts of the stem-bark of Anacardium occidentale led to the isolation of five compounds (1-5). Their structures were determined by spectroscopic means by comparing spectral data to be β-sitosterol (1), 2,4-dihydroxy acetophenone (2), 1-monolinolein (3), ethyl oleate (4) and β-sitosterol-3-O-β-D-glucopyranoside (5). These compounds were evaluated for cytotoxicity against human cancer cell lines: A549, SCOV3 and rat normal cell line NRK49f. Compounds 2-5 were for the first time isolated from A. occidentale.
( Jimoh Shehu ),( Martin Mokgwathi ) 한국스포츠정책과학원(구 한국스포츠개발원) 2007 International Journal of Applied Sports Sciences Vol.19 No.2
In the brave new world of physical education teacher education, subjecting teaching performance scores and the professional practices associated with these scores to regular theoretical and empirical scrutiny is necessary to root out preconceptions, stimulate pedagogical innovations, and provide cogent justifications for institutional investments in teaching practicum and clinical supervision. This study examines both the instruments used at the University of Botswana (UB) to evaluate the professional behaviours and personal attributes of physical education student teachers, and how the students have performed on these clinical evaluation scales. The dataset for the study contains the observation reports on 1,776 lessons taught by about 550 physical education student teachers from 1998-2004. Although students generally achieved high thresholds on various teaching skills and abilities, the results of rank ordering of aggregate points suggest a pattern of performance in which the supervisors consistently assigned highest ratings to some competencies and lowest ratings to others. In particular, students tended to receive lowest ratings on critical dimensions of teaching. Because high quality pedagogy is essential to student outcomes, teaching method courses in the context of UB must be redesigned to enhance students` competence in lesson preparation, presentation, conclusion, evaluation and creation of supportive environment for learner engagement.
FIXED POINTS SOLUTIONS OF GENERALIZED EQUILIBRIUM PROBLEMS AND VARIATIONAL INEQUALITY PROBLEMS
Yekini Shehu,Obiora Collins 한국전산응용수학회 2010 Journal of applied mathematics & informatics Vol.28 No.5
In this paper, we introduce a new iterative scheme for finding a common element of the set of common fixed points of infinite family of nonexpansive mappings and the set of solutions to a generalized equilibrium problem and the set of solutions to a variational inequality problem in a real Hilbert space. Then strong convergence of the scheme to a common element of the three sets is proved. As applications, three new strong convergence theorems are obtained. Our theorems extend important recent results.
Ma’aruf Shehu Minjibir 경남대학교 기초과학연구소 2022 Nonlinear Functional Analysis and Applications Vol.27 No.1
In this paper, iterative algorithms for approximating a common fixed point of a countable family of multi-valued demicontractive maps in the setting of Hadamard spaces are presented. Under different mild conditions, the sequences generated are shown to strongly convergent and Δ-convergent to a common fixed point of the considered family, accordingly. Our theorems complement many results in the literature.
Hindawi Publishing Corporation 2011 Fixed point theory and applications Vol.2011 No.1
<P>We introduce a new iterative scheme by hybrid method for finding a common element of the set of common fixed points of infinite family of k-strictly pseudocontractive mappings and the set of common solutions to a system of generalized mixed equilibrium problems and the set of solutions to a variational inequality problem in a real Hilbert space. We then prove strong convergence of the scheme to a common element of the three above described sets. We give an application of our results. Our results extend important recent results from the current literature.</P>
F-5 : Free Paper Presentation ; Clinical Characteristics and Outcomes in Patients with Possible UIP
이진욱,( Esmeralda Shehu ),박재석,전영준,노병학,이미영,권건영,최원일 대한결핵 및 호흡기학회 2013 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.116 No.0
Purpose: Possible UIP patients, diagnosed by High Resolution Computed Tomography (HRCT) constitute a small group of patients and till now little is known about their clinical characteristics and outcomes. Recent guidelines recommend the performance of surgical lung biopsy to increase the accuracy of possible UIP diagnosis. In this study we tried to determine the clinical characteristics, disease progression and, also, the survival rate of possible UIP patients. Methods: The study group consisted of 62 possible UIP patients diagnosed by HRCT and 544 IPF patients who served as a control group. We compare the clinical characteristics and outcomes of possible UIP and UIP pattern patients. Kaplan-Meyer survival curve was used to evaluate the survival of IPF and possible UIP patients. Results: We found higher survival rate in possible UIP compared with UIP pattern although it did not reach to statistical significance. The demoghraphic and clinical characteristics were similar in both groups. The proportion of combined lung cancer was no significant difference between UIP pattern and possible UIP. Pulmonary function tests showed lung volumes were not significantly different between two groups. However, lung diffusing capacity was significant lower in UIP pattern compared with possible UIP (p=0.004). Conclusions: Possible UIP patients have similar characteristics and outcomes as UIP pattern except lung diffusing capacity. The survival rate is slightly higher in possible UIP than UIP pattern patients.Purpose: Possible UIP patients, diagnosed by High Resolution Computed Tomography (HRCT) constitute a small group of patients and till now little is known about their clinical characteristics and outcomes. Recent guidelines recommend the performance of surgical lung biopsy to increase the accuracy of possible UIP diagnosis. In this study we tried to determine the clinical characteristics, disease progression and, also, the survival rate of possible UIP patients. Methods: The study group consisted of 62 possible UIP patients diagnosed by HRCT and 544 IPF patients who served as a control group. We compare the clinical characteristics and outcomes of possible UIP and UIP pattern patients. Kaplan-Meyer survival curve was used to evaluate the survival of IPF and possible UIP patients. Results: We found higher survival rate in possible UIP compared with UIP pattern although it did not reach to statistical significance. The demoghraphic and clinical characteristics were similar in both groups. The proportion of combined lung cancer was no significant difference between UIP pattern and possible UIP. Pulmonary function tests showed lung volumes were not significantly different between two groups. However, lung diffusing capacity was significant lower in UIP pattern compared with possible UIP (p=0.004). Conclusions: Possible UIP patients have similar characteristics and outcomes as UIP pattern except lung diffusing capacity. The survival rate is slightly higher in possible UIP than UIP pattern patients.
최원일,정혜라,( Esmeralda Shehu ),박재석,전영준,노병학,이미영,권건영 대한결핵 및 호흡기학회 2013 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.116 No.-
To date, there have been no reports of chronic pulmonary granulomatosis associated with exposure to polytetrafluoroethylene (PTFE). We report 3 cases of small airways centered granulomatous lesions in workers employed at facilities that apply coatings to pans and other utensils. The workers were repeatedly exposed to polytetrafluoroethylene particles that were probably generated by the high-pressure air spray and high temperatures (380-420oC) used in the application process. The duration of inhalational polytetrafluoroethylene exposure was between 7 and 20 years. We found granulomatous lung lesions around the small airways in lung biopsy specimens obtained from the workers. Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX) was performed focusing on the area where the PTFE particles were suspected to be located in macrophages. SEM/EDX analyses showed fluorine in the particles. Lung tissue samples from the all cases were analyzed using a fully automated Fourier transform infrared (FR-IR) spectrometer. Analysis of the spectrum extracted from the position of the foreign particles enabled the precise identification of the foreign bodies as PTFE. FT-IR detected all of the lung tissues samples had the bands at 1202-1148 cm-1 and 1202-1146 cm-1 are characteristic of the asymmetric and symmetric stretching vibrations of the C-F bonds of PTFE. These cases suggest that recurrent inhalational exposure to polytetrafluoroethylene particles causes chronic pulmonary granulomatosis. To date, there have been no reports of chronic pulmonary granulomatosis associated with exposure to polytetrafluoroethylene (PTFE). We report 3 cases of small airways centered granulomatous lesions in workers employed at facilities that apply coatings to pans and other utensils. The workers were repeatedly exposed to polytetrafluoroethylene particles that were probably generated by the high-pressure air spray and high temperatures (380-420oC) used in the application process. The duration of inhalational polytetrafluoroethylene exposure was between 7 and 20 years. We found granulomatous lung lesions around the small airways in lung biopsy specimens obtained from the workers. Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX) was performed focusing on the area where the PTFE particles were suspected to be located in macrophages. SEM/EDX analyses showed fluorine in the particles. Lung tissue samples from the all cases were analyzed using a fully automated Fourier transform infrared (FR-IR) spectrometer. Analysis of the spectrum extracted from the position of the foreign particles enabled the precise identification of the foreign bodies as PTFE. FT-IR detected all of the lung tissues samples had the bands at 1202-1148 cm-1 and 1202-1146 cm-1 are characteristic of the asymmetric and symmetric stretching vibrations of the C-F bonds of PTFE. These cases suggest that recurrent inhalational exposure to polytetrafluoroethylene particles causes chronic pulmonary granulomatosis.