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Search Results: 1 - 10 of 461534 matches for " A. Bamba "
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Stress Management and Job Performance in the Industries Sector of Mali  [PDF]
Massaran Bamba
Journal of Service Science and Management (JSSM) , 2016, DOI: 10.4236/jssm.2016.93023
Abstract: Work has severaldefinitions. However it is defined as an activity that is to perform a specifictask in a given environment social, organizational and production in a given time and for compensation. The first component of work is the physical environment in which it takes place. In this set are distinguished on one hand the atmosphere and the other hand factors of production. To qualitatively assess work, it’s determined by its performance. The stress is positive because of the finished product, marketing, margins and earnings. This means that the leaders of the industry manage well the micro and macroeconomics; shareholders ensure financial and strategic activity that bankers give the best loans and credits (heritage, Finance, strategy), that references to grant the delivery inputs of guarantee (economics, Finance, strategy) conditions take account of sociability, liquidity, sector risk, strength of the business, its future and the competence of its leaders. The stress is negative in an industry if it has increased internal and international competition; the emergence of substitute products; the loss of an important client or his bankruptcy; the bankruptcy of a bank with which the industry had preferred financial relations; the emergence of new regulations concerning safety and the protection of the environment in which the industry did not; the decline continues to the listing on the stock exchange; the rotation of stocks and different clients of the industry standard; the financing of investments by operation of repeated losses of operating resources; the impossibility of renewal of credit stress is a reaction to physical or psychological constraints. It can highlight different sources of occupational stress investments sources at work (working conditions, urgency of the time etc.). Ambiguities and overload conflicts of roles of responsibilities (several suicide in French companies); career too or no promotion, lack of job security, ambition thwarted, difficult professional relationship with supervisor, colleagues, subordinates, difficulties of delegation of authority, organizational climate: no or limited participation in the process of decisions, restrictions on the power of decisions (budget), family and personal life can also be a source of stress.
Searching for Diffuse Nonthermal X-Rays from the Superbubbles N11 and N51D in the Large Magellanic Cloud
H. Yamaguchi,M. Sawada,A. Bamba
Physics , 2010, DOI: 10.1088/0004-637X/715/1/412
Abstract: We report on observations of the superbubbles (SBs) N11 and N51D in the Large Magellanic Cloud (LMC) with Suzaku and XMM-Newton. The interior of both SBs exhibits diffuse X-ray emission, which is well represented by thin thermal plasma models with a temperature of 0.2-0.3keV. The presence of nonthermal emission, claimed in previous works, is much less evident in our careful investigation. The 3-sigma upper limits of 2-10keV flux are 3.6*10^{-14}ergs/cm^2/s and 4.7*10^{-14}ergs/cm^2/s for N11 and N51D, respectively. The previous claims of the detection of nonthermal emission are probably due to the inaccurate estimation of the non X-ray background. We conclude that no credible nonthermal emission has been detected from the SBs in the LMC, with the exception of 30 Dor C.
Critical homogenization of Levy process driven SDEs in random medium
Rémi Rhodes,Bamba A. Sow
Mathematics , 2009,
Abstract: We are concerned with homogenization of stochastic differential equations (SDE) with stationary coefficients driven by Poisson random measures and Brownian motions in the critical case, that is when the limiting equation admits both a Brownian part as well as a pure jump part. We state an annealed convergence theorem. This problem is deeply connected with homogenization of integral partial differential equations
Measuring surface geometry of adherent cells using oblique transillumination  [PDF]
Shinji Deguchi, Haruhisa Bamba
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.25053
Abstract: We present a new technique for estimating cell surface geometry. A dish supporting adherent cells is observed using oblique transillumination and rotated in the horizontal plane using a stepping motor. The stage rotation-dependent movements of the start and end points of a shadow formed behind the illuminated cells uniquely determine the relative height differences between points along the cell surface. Thus, using custom-made apparatuses and living endothelial cells, we demonstrate that the combination of a rotating stage and oblique lighting allows for the evaluation of three-dimensional surface geometry of adherent cells. As compared to confocal microscopy and atomic force microscopy, which are commonly used for measuring cell surface geometry, this approach can be performed rapidly and is especially suitable for the observation of unstained cells over a large surface covering multiple cells at a time.
Cathodic Using of ZrB2-αSiC and TiB2-αSiC for PEM Electrolysis and Water Electrolysis at Low Temperature  [PDF]
Kafoumba Bamba, Nahossé Ziao
American Journal of Analytical Chemistry (AJAC) , 2016, DOI: 10.4236/ajac.2016.71001
Abstract: 39 mol% SiC of ceramic pellets ZrB2-αSiC and TiB2-αSiC were synthesized by the reactive hot pressure RHP process at 1850°C under 40 Mpa in vacuum. The XR diffraction displays the absence of other reagents apart from ZrB2, SiC and TiB2 confirming the purity of the pellets. The cathodic exploitation of both of them through electrochemical study shows that TiB2-αSiC is the most active for Hydrogen Evolution Reaction (HER) and Hydrogen Oxidation Reaction (HOR) in 0.5 M of H2SO4 solution at room temperature. Moreover, the kinetic exploitation shows that for both pellets the system is controlled by mass transport when they are used as HER. However, in the case of HOR, the system is controlled by the electron transfer.
Production de Oreochromis niloticus avec des aliments à base de sousproduits agricoles
Y Bamba, A Ouattara, KS Da Costa, G Gourene
Sciences & Nature , 2008,
Abstract: Des alevins de Oreochromis niloticus (0,7 ± 0,06 g) ont été nourris dans seize étangs avec quatre aliments dont trois aliments tests (A1, A2 et A3) formulés uniquement à base de sous-produits agricoles. La composition de ces aliments tests est la suivante : A1 (tourteaux de soja, de coton, sons de ma s et de mil) ; A2 (tourteaux de soja, de coton, sons de ma s et de riz) et A3 (tourteaux de soja, de coton, sons de mil et de riz). Le quatrième (At), contenant de la farine de poisson, est un produit industriel et a servi de témoin. Deux densités de mise en charge (10 et 13 ind./m2 ) ont été appliquées pour chaque traitement alimentaire. Chaque densité d\'élevage a été répliquée une fois. Après 120 jours d\'élevage, tous les poissons ont atteint au moins 25 g (poids seuil de sexage). Les meilleures performances zootechniques sont obtenues avec l\'aliment A1, suivi de l\'aliment A2. Les poids moyens finaux observés aux densités 10 et 13 ind./m2 sont de 54,69 ± 7,76 et 46,77 ± 5,87 g (A1), 46,32 ± 6,71 et 41,23 ± 5,32 g (A2) ; 40,90 ± 7,64 et 37,31 ± 5,73 g (A3) puis de 41,72 ± 6,57 et 37,45 ± 5,84 g (At). Les quotients nutritifs respectifs correspondants sont de 1,13 ; 1,30 ; 1,87 et 1,72 (10 ind. /m2), puis de 1,40 ; 1,63 ; 1,74 et 1,80 (13 ind. /m2). Les aliments A1 et A2 permettent un niveau de production supérieur à celui du témoin. Comparés au témoin, des taux de réduction respectifs de 30 % et d\'environ 14 à 37% des co ts des aliments tests et de production des fingerling ont été obtenus.. Alevins of Oreochromis niloticus (0.7 ± 0,06 g) were fed with three test diets (A1, A2 and A3) formulated using agricultural by-products and a commercial one containing fish meal (control diet = At). The composition of these test diets is: A1 (oilcakes of soy, of cotton, bran of corn and of millet); A2 (oilcakes of soy, of cotton, bran of corn and of rice) and A3 (oilcakes of soy, of cotton, bran of millet and of rice). Two stocking densities (10 and 13 ind. / m2) were applied for each experimental diet. At the end of 120 days of rearing, all experimental fish reached more than 25g (doorstep weight for manual sexing). Diets A1 and A2 displayed the better growth and food utilization performances. Final mean weight of fish at stocking densities 10 and 13 ind. / m2 respectively, ranged from 54.69 ± 7.76 to 46.77 ± 5.87 g (A1), 46.32 ± 6.71 to 41.23 ± 5.32 g (A2); 40.90 ± 7.64 to 37.31 ± 5.73 g (A3) and 41.72 ± 6.57 to 37.45 ± 5.84 g (At). The corresponding food conversion rates were 1.13; 1.30; 1.87 and 1.72 (10 ind. /m2), then 1.40; 1.63; 1.74 and 1.80 (13 ind. /m2). Test diets A1 and A2 produced more yield than the control one. Relatively to the assessment economic aspect, test diets reduce the diet cost and fingerlings production cost, respectively of rate about 30 % and 14 to 37 %, compared to that of the control diet.
Refractory hypokalemia due to conventional amphotericin B in patients with leukemia
Bamba A,Jadhav M,Prabhu R,Ray S
Indian Journal of Cancer , 2009,
Liposomal amphotericin B (Fungisome TM ) for the treatment of cryptococcal meningitis in HIV/AIDS patients in India: A multicentric, randomized controlled trial
Jadhav M,Bamba A,Shinde V,Gogtay N
Journal of Postgraduate Medicine , 2010,
Abstract: Background : There is need to investigate the use of liposomal amphotericin B in cryptococcal meningitis in India. Aims : To compare the efficacy, safety, duration of treatment and cost of two doses of liposomal amphotericin B (Amp B) (Fungisome TM ) in cryptococcal meningitis in HIV/AIDS patients. Settings and Design : Prospective, randomized, multicenter study in tertiary care hospitals across India. Materials and Methods : Adult patients with culture-proven cryptococcal meningitis with HIV/AIDS were randomized to receive either 1 (Group A) or 3 mg/kg/day of Fungisome (Group B). Clinical efficacy and tolerability, laboratory evaluations and mycological response were assessed daily, twice weekly and weekly respectively. The patients were assessed at four and eight-week follow-up. Statistics : We calculated average and standard deviation for the various parameters. Results : The time to show clinical response was 13.66 days (1 mg) and 9.55 days (3 mg). In Group B (n=6 complete response), 50% patients responded within one week by microbial conversion, 83% in two weeks and 100% in three weeks. Patients with 1 mg dose (n=4 complete response), none showed microbial conversion within one week, 75% responded in two weeks, whereas one patient took four weeks. The average duration of treatment was 36.5±14.4 and 26.5±5.89 (S.D.) days in 1 and 3 mg/kg/day respectively. Drug was tolerated with little renal, hepatic or hematological toxicity. The cost was found to be 3.81 lacs and 1.74 lacs with 3mg/kg/day and 1mg/kg/day respectively. Conclusion : Higher dose showed better efficacy and quicker microbial conversion of Cerebrospinal fluid (CSF) (cerebrospinal fluid) than 1 mg/kg/day. It shortened the duration of treatment in days by 27% while drug cost almost doubled (Clinical trial registration number: ISRTCN 52812742)
Fine Structure of the Thermal and Non-Thermal X-Rays in the SN 1006 Shell
A. Bamba,R. Yamazaki,M. Ueno,K. Koyama
Physics , 2003, DOI: 10.1016/j.asr.2003.08.015
Abstract: The North Eastern shell of SN 1006 is the most probable acceleration site of high energy electrons (up to about 100 TeV) with the Fermi acceleration mechanism at the shock front. We resolved non-thermal filaments from thermal emission in the shell with the excellent spatial resolution of Chandra. The non-thermal filaments seem thin sheets with the scales of about 1 arcsec (0.01 pc) and about 20 arcsec (0.19 pc) upstream and downstream of the shock, respectively. In a simple diffusive shock acceleration (DSA) model with the magnetic field parallel to the shock normal, the downstream region should have a highly disordered magnetic field of 30-40 micro G. The width at the upstream side is extremely small, comparable to the gyro-radius of the maximum energy electrons. This result might imply that the possible scenario is not the conventional diffusive shock acceleration with a parallel magnetic field but that with a nearly perpendicular field or electron shock surfing acceleration.
Galactic X-ray Survey
K. Ebisawa,S. Yamauchi,A. Bamba,M. Ueno,S. Senda
Physics , 2002, DOI: 10.1002/asna.200310014
Abstract: We review highlights of the results obtained from recent Galactic X-ray survey observations, in particular ASCA Galactic center and plane survey and our Chandra deep survey on the (l,b)=(28.5,0) region. Strong hard X-ray diffuse components are observed from Galactic ridge, center and bulge, and they have both thermal and non-thermal spectral components. Dozens of discrete and extended sources have been discovered on the Galactic plane, which also indicate thermal and/or non-thermal X-ray energy spectra. They are often associated with radio sources and are considered to be SNR candidates. Most of the hard X-ray point sources in the outer part of the Galactic plane are considered to be background AGNs, while fraction of the Galactic hard X-ray sources (such as quiescent dwarf novae) increases toward the Galactic center. Most of the soft X-ray sources on the Galactic plane are presumably nearby active stars.
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