Publications (5607)
ARTICLE
Nucleation and growth in electrodeposition of metals on n-Si(111)
R. Krumm a, B. Guel b, C. Schmitz a, G. Staikov a,*
Initial stages of electrodeposition of Tl, Cd and Cu on n-Si(111) from sulfate electrolyte solutions are studied using cyclic voltammetry and chronoamperometry. Capacitance measurements in metal ion free solutions were used to determine the flat band potential of n-Si. Results show that the relative position of the metal equilibrium potential(...)
Electrodeposition; Nucleation; Crystal growth; Semiconductors; Flat band potential
ARTICLE
Isolation and characterization of Desulfovibrio burkinensis sp. nov. from an African ricefield, and phylogeny of Desulfovibrio alcoholivorans
A. S. Ouattara, B. K. C. Patel, J.-L. Cayol, N. Cuzin, A. S. Traore and J.-L. Garcia
A sulfate-reducing bacterium, strain HDvT (T¯type strain), was isolated from an anoxic ricefield soil. Cells were Gram-negative, non-sporulating curved rods motile by means of a single polar flagellum. Cytochrome c3 and desulfoviridin
were present. In the presence of sulfate, glycerol, 1,2- and 1,3-propanediol, dihydroxyacetone, pyruvate, lac(...)
sulfate reduction, rice®elds, sulfate-reducing bacteria, Desulfovibrio burkinensis, Desulfovibrio alcoholivorans, Desulfovibrio burkinensis sp. nov.
ARTICLE
Incorporating batch effects in the estimation of drug stability parameters using an Arrhenius model
I T Some, P Bogaerts, R Hanus, M Hanocq, J Dubois
The nonlinear estimation of drug stability parameters (energy of activation E a and shelf-life t Y) by conventional approaches employs equations relating drug content determination C at time t and temperature T. The identification procedures lead to the determination of only one initial drug content C 0 for several different experiments. Howev(...)
Mots clés non renseignés
ARTICLE
Study on the activation of phospholipases A 2 by purinergic agonists in rat submandibular ductal cells
E. KABRE
Extracellular ATP and benzoyl-ATP (Bz-ATP) increased the release of [3H] arachidonic acid ([3H] AA) from prelabeled rat submandibular gland (RSMG) ductal cells respectively two-and threefold. Both agonists also increased the release of [3H] AA from acini but at a lower level (+ 50% and+ 100% respectively). Carbachol had no significant effect o(...)
Mots clés non renseignés
ARTICLE
Activation by P2X7 Agonists of Two Phospholipases A2 (PLA2) in Ductal Cells of Rat Submandibular Gland COUPLING OF THE CALCIUM-INDEPENDENT PLA2 W...
E. KABRE
Isolated ductal cells of rat submandibular gland phospholipid pools were labeled with [3 H] arachidonic acid (AA). The tracer was incorporated preferentially to phosphatidylcholine (46% of the lipidic fraction). Extracellular ATP induced the release of [3 H] AA to the extracellular medium in a time-and dose-dependent manner (EC 50= 220 μ m). A(...)
Mots clés non renseignés
ARTICLE
Differential sensitivity to nickel and SK&F96365 of second messengerm operated and receptormoperated calcium channels in rat submandibular ductal cells
E. KABRE
The intracellular concentration of calcium ([Ca 2+] i) of rat submandibular ductal cells was measured with the intracellular fluorescent dye Fura-2. Carbachol (100 μM) and ATP (1 mM) both increased the [Ca 2+] j. The late response to ATP was blocked by 0.5 mM Ni 2+. This concentration of Ni 2+ also blocked the increase of the [Ca 2+] i and the(...)
Mots clés non renseignés
ARTICLE
Electrodeposition of Pb on n-Si (111)
B. Rashkova, B. Guel, R.T. Pötzschke, G. Staïkov and W. J. Lorenz
Electrodeposition of lead was studied in the system n-Si(111)/Pb2+, ClO4
ÿ, H+ using cyclic voltammetry, chronoamperometry, ex situ optical microscopy and in situ scanning probe microscopy (SPM).
Comparative studies were also performed in the system HOPG(0001)/Pb2+, ClO4
ÿ, H+. No underpotential
deposition (UPD) of 2D Pb phases could be ob(...)
electrodeposition, semiconductors, phase formation
ARTICLE
Activation of the Na+-K+ (NH4+)-2Cl−-cotransporter from rat submandibular glands in response to VIP
E. KABRE
A cellular suspension from rat submandibular glands was prepared with collagenase. The intracellular pH (pH i) was estimated with 2′, 7′-bis-(2-carboxy-ethyl)-5 (6)-carboxyfluorescein (BCECF). After exposure to NH 4 Cl, the pH i transiently increased (diffusion of NH 3) and then dropped (influx of NH 4+). Isoproterenol increased 2.5-fold the r(...)
Mots clés non renseignés
ARTICLE
Double épidémie de rougeole et de méningite à Bobo-Dioulasso (BF) au 1er semestre 1996: données hospitalières pédiatriques
K. NAGALO
Au cours du 1er semestre 1996, une double épidémie de rougeole et de méningite cérébro-spinale a éclaté au Burkina Faso:. 528 cas de rougeoles graves et 241 méningites purulentes ont été hospitalisées entre le 1er janvier et le 30 juin dans le Service de Pédiatrie du Centre Hospitalier National Sourô Sanou (CHNSS) de Bobo-Dioulasso. Les pics d(...)
Mots clés non renseignés
ARTICLE
Study of nonspecific cation channel coupled to P2z purinergic receptors using an acid load technique
E. KABRE
The intracellular pH (pHi) of rat submandibular cells was measured by 2', 7'-bis (carboxyethyl)-5 (6)-carboxyfluorescein (BCECF). The cells recovered from ammonium (30 mM) prepulse to their resting pHi within 10 min. Ethylisopropylamiloride (EIPA), an inhibitor of the Na+/H+ exchanger, slows the rate of pHi recovery. ATP (1 mM), in the presenc(...)
Mots clés non renseignés
ARTICLE
"Negritude and African Literature"
KIEMA, Alfred
En faisant un survol de la négritude , l'article décrit l'impact ou le non impact de ce courant littéraire sur la littérature africaine francophone et anglophone.
Negritude, , literature, , impact, non impact
ARTICLE
Les instruments de musique chez les Moosé du Burkina Faso » publié dans les Cahiers du CERLESH, Université de Ouagadougou.
NAO Oumarou
HHDUUUD
Mots clés non renseignés
ARTICLE
"L'imaginaire et le thème du voyage dans La Voix de Gabriel Okara"
KIEMA, Alfred
A partir d'une structure du récit de la quête et d'une narration atypique, Gabriel Okara décrit le voyage du héro Okolo à la recherche des valeurs ancestrales pour redonner sens et vie au monde dominé par le matérialisme, le déni de justice et la corruption.
Voyage, , imaginaire, quête, , valeurs morales
ARTICLE
Sur une classe d'algèbres à puissances associatives
M. OUATTARA
Many papers in connection with power associativity in genetic algebras show a class of commutative power-associative algebras which are one-dimensional modulo their maximal nil ideals. In this paper we study power-associative algebras with principal and absolutely primitive idempotent and the Peirce decomposition A= A 1⊕ A 1 2⊕ A 0 of which ei(...)
Mots clés non renseignés
ARTICLE
"The Great Carbuncle": La quête de vérité de l'humanité
PODA Michel
L’écrivain Américain du 19ème siècle Nathaniel Hawthorne est sans aucun doute un écrivain dont la fiction allie subtilité artistique et profondeur sémantique dans le regard critique qu’il porte à la marche de l’humanité. Sa nouvelle "The Great Carbuncle" nous sert ici d’illustration. L’aventure des chercheurs de la Grande Escarboucle(...)
quête, la grande escarboucle, la vérité, ironie, la tromperie