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Search Results: 1 - 10 of 373 matches for " Keita Tokuishi "
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Chest Wall Hemangiopericytoma-Like Solitary Fibrous Tumor of the Pleura: Case Report with Computed Tomography Findings*  [PDF]
Motohisa Kuwahara, Hiroshi Nishimura, Masato Iwami, Kazuya Naritomi, Masae Mano, Koji Inutsuka, Keita Tokuishi, Akinori Iwasaki
Advances in Computed Tomography (ACT) , 2013, DOI: 10.4236/act.2013.24022

We present a case report of a 65-year-old woman who underwent resection of a chest wall tumor. In contrast with computed tomography, the tumor exhibited hypervascularity and was fed from the 9th intercostals artery. Histologically, the tumor was diagnosed as a cellular variant of solitary fibrous tumor of the pleura, with branching “staghorn” vessels and hypervascularity. The tumor thus resembled a chest wall hemangiopericytoma.

Combination of p53AIP1 and survivin expression is a powerful prognostic marker in non-small cell lung cancer
Shin-ichi Yamashita, Masao Chujo, Michiyo Miyawaki, Keita Tokuishi, Kentaro Anami, Satoshi Yamamoto, Katsunobu Kawahara
Journal of Experimental & Clinical Cancer Research , 2009, DOI: 10.1186/1756-9966-28-22
Abstract: Forty-seven samples from non-small cell lung cancer patients were obtained between 1997 and 2003. For quantitative evaluation of RNA expression by PCR, we used Taqman PCR methods.Although no correlation between p53AIP1 or survivin gene expression and clinicopathological factors was found, the relationship between survivin gene expression and nodal status was significant (p = 0.03). Overall survival in the p53AIP1-negative group was significantly worse than in the positive group (p = 0.04); however, although survivin expression was not a prognostic factor, the combination of p53AIP1 and survivin was a significant prognostic predictor (p = 0.04). In the multivariate cox proportional hazard model, the combination was an independent predictor of overall survival (p53AIP1 (+) survivin (+), HR 0.21, 95%CI = [0.01–1.66]; p53AIP1 (+) survivin (-), HR 0.01, 95%CI = [0.002–0.28]; p53AIP1 (-) survivin (-), HR 0.01, 95%CI = [0.002–3.1], against p53AIP1 (-) survivin (+), p = 0.03).These data suggest that the combination of p53AIP1 and survivin gene expression may be a powerful tool to stratify subgroups with better or worse prognosis from the variable non-small cell lung cancer population.A number of genes for apoptosis play an important role in tumorigenesis [1]. Several gene abnormalities were reported as prognostic markers of non-small cell lung cancer, such as p53 [2]; however, these processes are complex and remain unclear.The abnormal expression of p53 is frequently reported in a variety of cancers [3]. p53 mutations are generally more common in smokers than in nonsmokers and an excess of G to T transversions of p53 has been described as a molecular signature of tobacco smoke mutagens in smoking-associated lung cancers. There are also mutational hotspots (codons 157, 158, 245, 248, and 273) in the p53 gene in lung cancer [4]. Several reports have shown that p53 expression is a prognostic marker in non-small cell lung cancer [2]. p53 protein is a tumor suppressor gene and m
Note on a Continuum Multi-Country and International Trade  [PDF]
Keita Kamei
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.22040
Abstract: We provide an analytical solution for the continuum multi-country two-sector Ricardian model of Yanagawa (1996) [1], and obtain additional results that are not observed in the standard two-country two-good Ricardian model. Increases in productivity in each sector results in an increase in the number of countries producing high technology goods and a de- crease in the number of countries producing low technology goods.
Cholera in Guinea: The Implication for Safe Water Sources and Sanitations  [PDF]
Keita Mamady, Sylla Mafoule
Open Journal of Preventive Medicine (OJPM) , 2014, DOI: 10.4236/ojpm.2014.47064

Objectives: To lay stress upon the importance of adequate water and sanitation in the prevention of cholera in Guinea. Methods: The data on deaths and cases of cholera in Guinea from 2000 to 2011 were downloaded from the WHO Official website. The data on deaths and cases of cholera outbreak which occurred in Guinea from 02 February to 15 October 2012 were collected from the Guinean Ministry of Public Health. The cholera index case is confirmed by a laboratory test. Cholera cases were defined as individuals over one year old who had had watery stools with or without vomiting. Cholera incidence and case fatality rates between different areas of cholera occurrence in the country over time were computed. Results: Over the overall 12-year period (2000-2012), the case fatality rate showed a somewhat sign of slight rising trend when the incidence rates increased rapidly. During the seven consecutive years of cholera outbreaks in Guinea, between 2003 and 2009, the most affected areas were Conakry, Dubreka, Coyah, Boffa, Forécariah, Guékédou, Dalaba and Télimélé. In 2012, Cholera outbreak resulted in an incidence rate of 23.23 per 10,000 population and a case fatality ratio (CFR) of approximately 1.8%. Cases and deaths were reported in 12 prefectures out of 34: Conakry, Coyah, Forecariah, Fria, Boffa, Dubréka, Boké, Mamou, Kindia, Kankan, Kerouané and Dabola. Conclusion: Cholera is an important health problem in Guinea. Any earnest attempts to improve water and sanitation alongside with promotion of good hygienic practices will likely ward off the threat of cholera in the country.

Assessment of Head Injury Criterion Score of Shock Attenuation Material Employed around Playground Equipment Using Nonlinear Spring Contact Model  [PDF]
Yuji Ohue, Keita Miyoshi
Open Journal of Safety Science and Technology (OJSST) , 2014, DOI: 10.4236/ojsst.2014.42009
Abstract: In order to investigate the influence factors on HIC (Head Injury Criterion) score of shock attenuation materials employed around playground, impact tests were carried out in accordance with ASTM standard. Four kinds of the commercial shock attenuation materials were employed for the test. The apparatus is composed of the missile made from aluminum alloy with a mass of 4.6 kg and a triaxial accelerometer. The higher the missile was dropped, the more HIC score increased. The HIC score depended on the peak deceleration in collision. From the time-frequency analysis, it was obvious that HIC score depended on the characteristic frequency of the vibration system in collision between the missile and the shock attenuation material. There was sufficient evidence to suggest that the use of a simple vibration system with a nonlinear hardening spring is beneficial to assess HIC score and peak deceleration for the shock attenuation material.
Fatality from Road Traffic Accident in Guinea: A Retrospective Descriptive Analysis  [PDF]
Keita Mamady, Bin Zou, Sylla Mafoule, Jiabi Qin, Keita Hawa, Keita Fodé Lamine, Guoqing Hu
Open Journal of Preventive Medicine (OJPM) , 2014, DOI: 10.4236/ojpm.2014.411091
Abstract: Objectives: Causes and risk factors that result in fatal road traffic accident have not been described at the national level in Guinea yet. The goal of this study is to explore the causes and risk factors related to fatal road traffic accident, identified most vulnerable road users, and inform the road traffic prevention policy in Guinea. Methods: We made a retrospective descriptive analysis based on national fatal road traffic accident data from the Department of Health Information at the Guinean Ministry of Health for year 2011. Results: In 2011, road traffic accident was responsible for an aggregate number of 1655 deaths with an overall death rate of 15.3 per 100,000 population. Male experienced more than twice the risk of death from road traffic accidents (21.9 deaths per 100,000 population) compared with female (9.0 deaths per 100,000 population). While taking the population as a whole, the highest death rate was found among the middle aged in 35 - 49 age group accounting for (29.7 deaths per 100,000 population), followed successively by young adults age group 25 - 34 years (24.6 deaths per 100,000 population), and the middle aged in 50 - 64 age group (22.9 deaths per 100,000 population). Principally, occupants, motorcyclists and pedestrians sustained considerable burden of deaths respectively (9.2; 2.9; 2.2 per 100,000 population). In re-gional setting, the highest death rate was found in Upper Guinea (19.5 per 100,000 population), followed by Forest Guinea (18.7 per 100,000 population) and Middle Guinea (16.8 per 100,000 population). A large proportion of male was killed as motorcyclist than female while high per-centage of female died as occupant than male for all age group. The regional distribution showed that when a remarkable number of occupant death were observed in Upper and Forest Guinea, more people died as pedestrian and pedal cyclist in Conakry. Conclusions: This study demonstrated that most of the deaths were among occupants, motorcyclists and pedestrians, and the productive workforce aged 25 - 49 years. It was found that majority of the deaths happened in Upper Guinea followed by Forest Guinea. Improvement of roads design, strict enforcement of road safety laws and raising the awareness of general public about the causes and risks factors of road traffic accident through various channels are highly required which will promote economic growth in the local communities and then help people escape the poverty trap.
Horton Revisited: African Traditional Thought and Western Science
L Keita
Africa Development , 2007,
Abstract: Over the years Robin Horton has argued for what he refers to as the ‘continuity thesis’ according to which there are theoretical similarities between African traditional thought and modern Western science. Horton’s thesis stands in contrast to the standard Western anthropological appraisal of traditional African thought. The standard appraisal (Levy-Bruhl, Durkheim, Evans-Pritchard, et al.) stated that the two modes of thought were incommensurate. I argue that while the continuity thesis holds for certain aspects of African thought – empirical, protoscientific and metaphysical – it does not apply to traditional African religious expression. My thesis here is that belief systems founded on magic, religion and their combinations should be understood as belonging to what might be referred to as general metaphysics. I argue too that if the continuity thesis is to apply to the history of thought in Africa then the more apt comparison should be between the different phases of technological and scientific thought of the West. Thus Horton’s claim that traditional African religious thought is configured according to the goals of explanation, prediction and control thereby putting it on the same epistemic plane as modern Western science is thereby rendered irrelevant. On the other hand the goal of traditional African religion like that of many other religious traditions – including those of the West – has principally been to seek a conscious communion with ancestors and anthropomorphised godheads and spiritual entities of the metaphysical realm.
Book Review: How Rich Countries Got Rich and Why Poor Countries Stay Poor
L Keita
Africa Development , 2009,
Abstract: by Erik S. Reinert, How Rich Countries Got Rich and Why Poor Countries Stay Poor, New York: Public Affairs, 2008. pp. xxix + 365. $17.95.
Dynamic Structural Modeling and Its Applications: An Analysis of Anxiety Structure
Keita Kinjo
International Journal of Computer Science Issues , 2012,
Abstract: This study aims at investigating and analyzing the changes of consciousness structure. The method is already known and is referred to as structural modeling; to investigate and analyze the change of consciousness structure. However, there have been only a few studies conducted to analyze the change of consciousness structure. We have therefore proposed the dynamic structural modeling as an outline to investigate and analyze the change of consciousness structure. As an example, we have applied the principle to the data about the structural change of human anxiety at the 2011 off the Pacific coast of Tohoku Earthquake and the result gives us useful information.
Coexistent States of Charge Density Wave and Spin Density Wave in One-Dimensional Systems with the Inter-site Coulomb Interaction under the Electron Filling Control
Keita Kishigi
Physics , 2000,
Abstract: The coexistent state of the spin density wave (SDW) and the charge density wave (CDW) in the one-dimensional systems is studied by the mean field approximation at T=0 in various electron-filling cases. We find that the coexistent state of SDW and CDW is stabilized when the on-site and the inter-site Coulomb interactions have the values estimated for the organic conductors. The ground state energies have cusp-like minima at 1/4, 3/8, 5/12, 7/16, 7/20 and 9/20-fillings.
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