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Search Results: 1 - 10 of 18499 matches for " U. Tsolmon "
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Environmental and Occupational Risk Factors Effect to Arterial Hypertension: Correlation between Arterial Hypertension and Lead  [PDF]
D. Оyunbileg, I. Bolormаа, U. Tsolmon, О. Chimedsuren
Journal of Geoscience and Environment Protection (GEP) , 2015, DOI: 10.4236/gep.2015.32010

The main risk factors for hypertension include smoking, the consumption of alcohol, poor dietary habits, lack of exercise, and stress. Scientists have also linked exposure to lead as a risk factor for hypertension. Chemicals are fundamental negative factors for occupational health as they penetrate an organism through the respiratory tract in the state of vapors, gases, dust, and others. There is high correlation between the concentration of chemicals in the environment and time spent of exposure to the chemicals. Some chemicals compounds penetrate through the respiratory tract and irritate the upper respiratory track and lung lobes. They have different influences depending on their solubility. Lead has a harmful effect on organism when it is in higher doses than normal. It exerts an especially harmful effect upon the nervous and circulatory systems. Sources of environmental lead pollution are benzene, coal, paints containing lead, and some working conditions. A population based case controlling model of an analytic study was used. For the study data analysis SPSS 20.0 program were applied single and combined risk factors were accounted by regressive investigation method and results gained were expressed by odds ratio and 95% confidence interval (95% CI) p value. The goal is to assess the correlation of lead to arterial hypertension among miners of the Gobi region provinces. In the sampling we employed a random collection method with collection ratio of 1:2. One hundred miners with hypertension took part in the study. In the control group people without hypertension were assigned and they were of the same age and sex with the experimental group. Among the participants, those of working age had a high prevalence of hypertension and the disease is beginning to affect those of a younger age as well. 82% of those in the experimental group work in hard working conditions and 86% of them work for an average of 11.3 hours in noisy and dusty conditions. The increase of blood-lead content greatly depends on service length. Miners with arterial hypertension who worked for many years had a high content of lead in their blood. Lead content in the air outside of working places has a weak correlation (r = 0.3) with hypertension among those in the experimental group and was statistically significant (p = 0.007). With an increased blood-lead content, a risk for arterial hypertension (AH) increased two times (OR = 2.11 [95% CL; 1.52 - 2.94], p = 0.0001). But lead content in drinking water has an inversely associated with

Needlestick and sharps injuries among health care workers at public tertiary hospitals in an urban community in Mongolia
Mayo Kakizaki, Nayu Ikeda, Moazzam Ali, Budbazar Enkhtuya, Muugolog Tsolmon, Kenji Shibuya, Chushi Kuroiwa
BMC Research Notes , 2011, DOI: 10.1186/1756-0500-4-184
Abstract: A survey of 621 health care workers was undertaken in two public tertiary hospitals in Ulaanbaatar, Mongolia, in July 2006. A semi-structured and self-administered questionnaire was distributed to study injection practices and the occurrence of NSSIs. A multiple logistic regression analysis was performed to investigate factors associated with experiencing NSSIs. Among the 435 healthcare workers who returned a completed questionnaire, the incidence of NSSIs during the previous 3 months was 38.4%. Health care workers were more likely to report NSSIs if they worked longer than 35 hours per week (odds ratio, OR: 2.47; 95% confidence interval, CI: 1.31-4.66) and administered more than 10 injections per day (OR: 4.76; 95% CI: 1.97-11.49). The likelihood of self-reporting NSSIs significantly decreased if health care workers adhered to universal precautions (OR: 0.34; 95% CI: 0.17-0.68).NSSIs are a common public health problem at public tertiary hospitals in Mongolia. The promotion of adequate working conditions, elimination of excessive injection use, and adherence to universal precautions will be important for the future control of potential infections with blood-borne pathogens due to occupational exposures to sharps in this setting.Percutaneous exposures to blood and body fluids through contaminated needlesticks and sharps are an important occupational hazard for morbidity and mortality from infections with blood-borne pathogens among health care workers[1,2]. Among the 35 million health care workers worldwide, three million experience needlestick and sharps injuries (NSSIs) every year,[3] with a high incidence of these injuries being reported from health care facilities in a number of countries that vary in terms of their level of economic development[4-12]. NSSIs pose a considerable risk for the transmission of more than 20 kinds of blood-borne pathogens, such as hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV)[2]. The World Hea
Use of Kostiakov’s Infiltration Model on Michael Okpara University of Agriculture, Umudike Soils, Southeastern, Nigeria  [PDF]
Magnus U. Igboekwe, Ruth U. Adindu
Journal of Water Resource and Protection (JWARP) , 2014, DOI: 10.4236/jwarp.2014.610083

The main purpose of this study is to obtain the water infiltration parameters of the soils of Michael Okpara University of Agriculture, Umudike. This could be used in simulating infiltration for these soils when designing irrigation projects, thereby saving time and cost of field measurement. Field measurements of infiltration were first made using a double ring infiltrometer. The test lasted for 180 mins in each location. Infiltration values ranged from 0.03 cm/min to 0.1 cm/min. The highest value was obtained in the Forest Block. Kostiakov’s infiltration model was then applied on the field data in order to determine the soils’ infiltration parameters and equations. The model empirical constants or parameters obtained were “m” and “n”. For “m” the values were: 0.53 for the soil of Forest Block, 0.42 for Poultry block, 0.50 for P.G. block, 0.41 for the soils of Staff School and Guest House. The corresponding “n” values were: 1.37, 1.12, 0.37, 1.79, and 1.38. Infiltration equations: 0.4It1.38, 0.4lt1.79, 0.42t1.12, and 0.53t1.37 were determined for the locations. These were used to simulate data which were evaluated by comparing them with the field data. The two data sets showed closed relationships. This implied that the model could be used to simulate water infiltration during irrigation projects in the farms of Michael Okpara University of Agriculture, Umudike.

Effects of Kolaviron, the Major Constituent of Garcinia kola, on the Histology of the Hypothalamus, Pituitary, and Testes Using Adult Male Wistar Rats as a Model Organism  [PDF]
A. U. Obi, P. U. Nwoha
Forensic Medicine and Anatomy Research (FMAR) , 2014, DOI: 10.4236/fmar.2014.23014
Abstract: This study determined the effects of kolaviron on the histology of organs of the hypothalamic-pi- tuitary-gonadal axis, mainly the hypothalamus, pituitary and testis. The aim was to ascertain if its consumption has deleterious effects on these organs. Thirty six adult Wistar rats divided into six groups of six animals each were used and kolaviron administered at 100, 200, 400 and 800 mg/kg body weight. The results showed that gross cellular depletion and desquamation of cells of testis significantly reduced number of cells in the hypothalamus and pituitary (P < 0.05). It significantly reduced the relative brain weight (P < 0.05). These findings suggest that kolaviron can alter the histology of the axis which may impair its reproductive function.
A Multi-Objective Obnoxious Facility Location Modelon a Plane  [PDF]
U. K. Bhattacharya
American Journal of Operations Research (AJOR) , 2011, DOI: 10.4236/ajor.2011.12006
Abstract: In this paper a Vertex Covering Obnoxious Facility Location model on a Plane has been designed with a combination of three interacting criteria as follows: 1) Minimize the overall importance of the various exist-ing facility points; 2) Maximize the minimum distance from the facility to be located to the existing facility points; 3) Maximize the number of existing facility points covered. Area restriction concept has been incor-porated so that the facility to be located should be within certain restricted area. The model developed here is a class of maximal covering problem, that is covering maximum number of points where the facility is within the upper bounds of the corresponding mth feasible region Two types of compromise solution methods have been designed to get a satisfactory solution of the multi-objective problem. A transformed non- linear programming algorithm has been designed for the proposed non-linear model. Rectilinear dis-tance norm has been considered as the distance measure as it is more appropriate to various realistic situa-tions. A numerical example has been presented to illustrate the solution algorithm.
Role of HLA-A, HLA- B, HLA-DRB1 and HLADQB1 Alleles in HIV-1 Patients with Pulmonary Tuberculosis Co-Infection from Western India  [PDF]
U. Shankarkumar, A. Shankarkumar
World Journal of AIDS (WJA) , 2011, DOI: 10.4236/wja.2011.14019
Abstract: We attempted to study the role of HLA HLA-A, B, DRB1 and DQB1 in HIV-1 patient’s co infected with pulmonary tuberculosis (PTB). A total of 102 HIV-1 + patients co-infected with pulmonary tuberculosis and 200 healthy controls were included in HLA analysis. HLA-A*, HLA-B* HLA-DRB1* and DQB1* typing was done molecularly by PCR- SSOP (Polymerase Chain reaction-Sequence Specific Oligonucleotide Probing) method using kit (Dynal Kit – Invitrogen). The frequencies of the HLA-A, B HLA-DRB,1 and DQB1 alleles were determined using standard software. The HLA alleles identified among HIV + ve/PTB + ve co-infected patients as compared with healthy controls showed a significantly increased frequency of HLA-B*08:01:01 in HIV + ve/PTB + ve co-infected patients when compared with healthy controls (p = 0.011, OR 3.335, 95% CI 1.35-8.18), Likewise HLA-DQB1*03:01:03 was significantly increased in HIV + ve/PTB + ve co-infected patients as against healthy controls (p < 0.0001, OR 107.5, 95% CI 6.195 - 1865.3). Similarly HLA-DQB*06:01:02 allele frequency was observed in HIV + ve/PTB + ve co-infected patients as against healthy controls (p = 0.003, OR 4.808, 95% CI 1.72-13.39), HLA-DQB1*03:01:01 (p = 0.045, OR 0.219, 95% CI 0.051 - 0.940), HLA-DQB1*06:01:01:01 (p = 0.012, OR 0.334, 95% CI 0.145 - 0.770), alleles in HIV + ve/PTB + ve co-infected patients when compared with healthy controls. We can be concluded that different HLA alleles may render susceptibility or protection to in different ethnic population.
Unsteady Incompressible Flow of a Generalised Oldroyed-B Fluid between Two Infinite Parallel Plates  [PDF]
D. Bose, U. Basu
World Journal of Mechanics (WJM) , 2013, DOI: 10.4236/wjm.2013.32012

This paper presents a study of visco-elastic flow of an incompressible generalized Oldroyd-B fluid between two infinite parallel plates in which the constitutive equation involves fractional order time derivative. The solutions of field equations are being obtained for the motion of the said fluid between two parallel plates where the lower plate starts to move with steady velocity and the upper plate remains fixed in the first problem and the upper plate oscillates with constant frequency and the other being at rest in the second problem. The exact solutions for the velocity field are obtained by using the Laplace transform and finite Fourier Sine transform technique in terms of Mittag Leffler and generalised functions. The analytical expression for the velocity fields are derived and the effect of fractional parameters upon the velocity field is depicted graphically.

The Density of Energy States for Nonparabolic Dispersion Law in a Strong Magnetic Field  [PDF]
U. I. Erkaboev
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.411208
For nonparabolic dispersion law is determined by the density of the energy states (Ns) in a quantizing magnetic field. The effect of temperature on the expansion of the Lan-dau levels of electrons semiconductors with the nonquadratic dispersion is studied. The density of states at low temperatures is calculated from data on high-tem- perature Ns.
GIS Based Analysis of Shoreline Change in Ibeno, Akwa Ibom State, Nigeria  [PDF]
F. U. Ekong
Journal of Environmental Protection (JEP) , 2017, DOI: 10.4236/jep.2017.85041
Abstract: The study is an attempt to detect shoreline and land use change with a view to determining the trend and nature of the change in Ibeno, Akwa Ibom State, Nigeria. Landsat and Ikonos imageries and GIS techniques were utilized in capturing these changes over a period of 22 years (1986 to 2008) using 3 time periods. The result of the analysis indicated that there were more eroding than accretion portion in the shoreline of the study area. The study recommended monitoring of the shoreline change from time to time, establishment and enforcement of development setbacks, implementation of development control measures as well as the introduction of integrated coastal zone planning and management within the Niger Delta region to reduce hazards and protect the beautiful sand beaches.
Applications of Fractional Calculus to Newtonian Mechanics  [PDF]
Gabriele U. Varieschi
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.66105
Abstract: We investigate some basic applications of Fractional Calculus (FC) to Newtonian mechanics. After a brief review of FC, we consider a possible generalization of Newton’s second law of motion and apply it to the case of a body subject to a constant force. In our second application of FC to Newtonian gravity, we consider a generalized fractional gravitational potential and derive the related circular orbital velocities. This analysis might be used as a tool to model galactic rotation curves, in view of the dark matter problem. Both applications have a pedagogical value in connecting fractional calculus to standard mechanics and can be used as a starting point for a more advanced treatment of fractional mechanics.
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