Archives-June... 

In the present study bacterial species isolated from textile industry effluent were evaluated for their decolourization and degradation abilities. The textile waste has a high number of organic as well as inorganic pollutants which would be harmful to aquatic flora and faunas well as cause health problems if the industrial effluent is directly discharged into water bodies. Seven microbial strains were isolated and from them two strains identified as Pseudomonas fluorescens and Bacillus cereus were evaluated for their capability to degrade different dyes. Further the various condition for maximum dye degradation were analysed and Pseudomonas fluorescens was seen to give 95-98 % dye degradation under aerobic and agitated conditions at neutral pH.

This research investigates and reports the mineralogy, geochemistry, industrial implications and protolith of a marble deposit in the basement complex of Owan-East, Edo-State, Southwestern Nigeria. Field geology revealed the marble is interbedded with calc-silicate gneiss, quartz-biotite schist, polygenetic metaconglomerate, mica schist and quartzite. The marble occurs as lenses within the gneiss and overlain by a thin gritty tropical soil. The fine-grained marble occurs in three colour varieties (white, grey, and banded). The banded type exhibits strong axial foliation which is concordant with NNE-SSW regional strike with westerly dip ranging between 68° and 82°. Petrographic investigation revealed that calcite and dolomite account for over 85% of the marble. X-ray diffraction showed the marble is composed of calcite (52%), dolomite (35%), accessory quartz (6%), biotite (4%) and feldspar (2%). Optical and X-ray results indicate the bands in the banded variety represents clay impurities in the original limestone protolith.The marble is calcitic (CaO, 51.7-60.76%; MgO, 1.42 – 2.57%) with average Mg2+/Ca2+ ratio of 3:100. Average alkali (Na2O + K2O) contents (1.13%) suggest deep water, low saline (estuarine, brackish to paralic) environment of deposition for the ancient limestone. Alumina content of the marble (white, 0.5 %; grey 0.35 % and foliated 3.49 %) (total average: 1.45 %) and that of Fe2O3 (white, 0.19 %; grey 0.5 % and foliated 1.78) (total average: 0.82 %) exceed those of other marble deposits in southwestern Nigeria. Silica Ratio (SR) (1.28), Alumina Ratio (AR) (3.54), and Lime Saturation Factor (LSF) (537.75) suggest the marble is useful in the manufacture of cement. The marble also meets industrial specifications for fertilizer production and as refractory lime.

Mexico has one of the highest job desertion rates in Latin America and worldwide. This desertion causes that the companies that suffer from it to experience a decrease in workforce and therefore, that the accomplishment of their organizational objectives is not achieved. This situation is exacerbated when those who desert are those who command the middle management of the companies. Here are examined some of the most representative internal and external factors that cause talent instability in a company that is part of an auto parts manufacturer industrial group in the municipality of Celaya, Guanajuato, Mexico; identifying the causes that led to medium- or long-term abandonment of it. Strategies to detect and track this talent mobility are also evaluated.

In Burkina Faso, the increase in energy consumption in habitat can be expected to become even more marked, not only because of the expansion of air conditioning and the number of electrical appliances. In this work, we proceeded to a modeling and a simulation of the thermal behavior of the envelope of the habitat F1 (studio apartment) built in concrete block from the software COMSOL Multiphysics Simulation 5.3a. We have noted that the concrete block habitat has a high internal temperature (temperature above 35°C) with a low thermal phase shift of 02 hours during the hot months (March and April) of the year. Block constructions would require a very large daytime air conditioning load to keep the interior at a comfortable temperature. We can therefore say that for sustainable or bioclimatic design, the concrete block is not a material adapted to the climatic context of the city of Koudougou.

Ultrasonic waves are used widely in food production, industry and chemical reactions. For conducting such a reactions, it is need to have a reactor in which liquid is affected by the waves. Among the most important parameters used for reactor design, the reactor dimensions may be considered as the most important parameter that can take influence the most, from the wave cavitation. In this study, effects of ultrasonic power, horn diameter and horn height on the amount of energy absorbed by liquid in reactor were evaluated and models were further developed for estimating the absorbed energy. Statistical analysis indicated that the effects of input power, reactor diameter and reactor height were all significant on energy absorption (P<0.01). The results revealed that as the horn diameter increased from 70 to 100 mm, 9% decrease was occurred in the absorbed energy. By increasing the horn height from 30 to 70 mm, 11% decrease was observed in the energy absorption. There was an 11% increase in the energy, together with an increase in ultrasonic wave power from 100 to 300 W. It was also concluded that the second order model was most suitable to predict the amount of energy absorbed by liquid (R2=94.5%).

Multi-drug-resistant tuberculosis remains a significant threat in people living with HIV and promotes increased mortality rates. It is often a combination of pulmonary tuberculosis forms and extra-pulmonary forms. We report 6 cases of patients with HIV and multi-drug-resistant tuberculosis collected over a two-year period from 01/01/2018 to 31/12/2019 hospitalized for multi-drug-resistant tuberculosis at Moulay Youssef Hospital. We describe the radiological, evolutionary and therapeutic clinical characteristics of resistant TB in this patient category. The average age of our patients was 36. These are 2 women and 4 men. Of which 4 were known to carry retroviral infection, followed and treated with antiretroviral therapy, there was only one diabetic patient on insulin therapy. The signs of calls were respiratory in 3 patients, digestive in one patient, neurological in one case, and an alteration of the general state in the last case. Exclusive pulmonary involvement was noted in 4 patients, associated with neuromeningeal localization in one patient and cervical lymph node localization in the last case The radiological aspect was dominated by bilateral micronodular opacities often associated with sequellary opacities. Based on the results of the xpert Tb Rif and Hain Test 1 st line and 2 nd line 3 cases of our patients were Prexdr (resistant to injectable 1/3 cases, resistant to furoquinolone 2/3 cases), MDR in one patient, two patients were classified as RR due to the unavailability of genotypic tests. The evolution during hospitalization was marked by the occurrence of pneumocystosis in 2 patients who had progressed well under Bactrim high curative dose and systemic corticosteroids, pneumothorax in one case; we deplore the death of a patient by tuberculosis meningitis. Five patients were put individualized regimen of 20-24 months and only one case on a standardized regimen for 9-11 months, antiretroviral treatment was initiated after 1 month of the start of anti-bacillary treatment in 2 cases (CD4 rate > 500). Major adverse effects were observed in 3 patients. These were bilateral deafness, significant hepatic cytolysis, and severe cytopenia which required the permanent discontinuation of amikacin, Pza, Linezolid respectively. Minor side effects, a type of digestive intolerance, were noted in 2 patients who progressed well under symptomatic treatment. Minor side effects, a type of digestive intolerance, were noted in 2 patients who progressed well under symptomatic treatment.HIV infection increases the risk of the emergence of resistant strains of the TB bacillus in HIV-positive subjects. The combination of multi-drug-resistant tuberculosis and HIV infection is a major risk factor for morbidity-mortality.

Multivariate statistics was used to categorize the potential sampling sites of Lake and identify potential pollution sources by analyzing water quality parameters. Water quality parameters ,such as total dissolved solid (TDS), pH, temperature, conductivity, turbidity, dissolved oxygen (DO), five day biological oxygen demand (BOD5), total hardness as CaCO3, total alkalinity as CaCO3, nitrate, sulfate, orthophosphate, fluoride, - K, Mg, Cu, Cd, Cr, Fe, Mn, Pb, and Zn were determined and compared with WHO standards. Principal component analysis (PCA) extracted seven principal components. The first principal component (PC1) accounted for 22.1 % of the total variance, and pH, Mn turbidity, specific conductance (SC) and sulfate were strongly loaded on it. Principal component two was (PC2) mainly composed of BOD5, total hardness, temperature, iron, DO, and TDS. This component accounted for 17.3 % of the total variance. The third component (PC3), dominated by potassium, TDS, and zinc, explained 12.4 % of the total variance. Copper and fluoride were associated in the fourth principal component, accounting for 10.5 % of the total variance. In the fifth component, total alkalinity, phosphate, and zinc were the dominant components, which account for 10.2 % of the total variance. Nitrate, chromium, and lead were isolated in the sixth component (PC6), accounting for 9.4 % of the total variance. The last component was dominated by magnesium, explaining 7.6 % of the total variance. Hierarchical cluster analysis (HCA) divided the sampling sites into four clusters. Cluster A include five sampling sites and it was highly loaded with PC4 and PC6, which showed the presence of a high level of pollution from industrial effluents and agricultural runoff. Cluster B and C consisted of three sampling sites and one sampling site, respectively, and they were highly loaded with PC3 and PC6, which indicated the presence of a high level of pollution from domestic wastewaters, land development and urban runoff. Cluster D comprised two sampling sites and was highly loaded with all component loadings except for PC7. It was considered a highly polluted site from multiple sources of pollution. These results obtained from the multivariate analysis can be very useful for the surrounding rural and urban communities for the proper and safe use of the lake. In addition, it can reduce the cost associated with monitoring the lake by reducing the number of sampling sites.

There has been an increasing interest in unionization and decrease in union membership both for blue and white collar workers during the recent years in all over the world. For quite some time, public employment remains the largest group of union membership. However, this seems to be changing due to recent developments in professional workers’ demand for unionization mostly via professional associations, although ”not surprisingly, professionals and managerial personnel have been less likely to approve of labor unions and exhibit less confidence in organized labor and labor leaders than blue-collar workers (Brint, 1985)”. This paper attempts to shed light on what we know and don’t know about new trends in unionization and unionization among professionals. Paper mainly includes 4 sections. It starts with the introduction and in that part unionization is broadly defined. In the first section, unions’ historical development will also be investigated. More importantly, paper will try to answer what it means to be a career person and professional employee in the 21st century business world. These trends will be analyzed in three regions which are Europe, Asia and U.S.A. In section 2, theoretical roots in other words literature review on the subject will be presented. Causes of general decline will be explained and unionization among professionals such as teachers, professors, engineers, librarians, accountants and lawyers et cetera will be discussed in detail. In section 3, after explaining the historical development, unionization among professionals in Turkey will be brought up for discussion and comparison with these 3 regions. Section 4 will include unionization industry foresight for 2025, further research, discussion and conclusion. Besides giving insight about unionization in Turkey for comparison purposes between different regions of the world, the purpose of this paper is to provide information for the potential researchers about basic aspects of new trends in unionization and professionals’ attitudes and behaviors toward unions.

In this paper, we made an attempt to study the algebraic nature of fuzzy subfield of a field with respect to T-norm.

This article studies the problems and obstacles impeding the development of tourism industry in Iran focusing on marketing and promotion. For this purpose, it initially deals with the literature of tourism and marketing and then the importance of the research is expressed. After the data was collected and analyzed, the following items were identified as main obstacles to the development of tourism industry in Iran: lack of promotion in Iran’s attractions in target markets; inefficiency of national and international transportation facilities and systems; low quality of services such as hospitality and entertainment facilities; International negative publicity against Iran and insufficient training of people who are involved in the country’s tourism industry. The results from the research indicated that lack of promotions in the target markets (outside Iran) has become an obstacle to attracting tourists to Iran and negative untrue publicity against Iran launched by some international communities has become an obstacle to attracting tourists to the country. It was also confirmed that lack of suitable accommodations and recreation/entertainment facilities has become an obstacle to attracting tourists to Iran and the low quality of transportation in the country has become an obstacle to attracting tourists to Iran.