Reactions of a P-N hybrid ligand, N,N-bis(diphenylphosphanylmethyl)-3-aminopyridine (3-bdppmapy), with silver oxysalts including AgNO3, AgOAc, AgBz (Bz = benzoate) and AgSal (Sal = salicylate) under different reaction conditions give rise to seven coordination compounds {[Ag4(μ-η,η-NO3)2(μ-η,η(2)-NO3)2](3-bdppmapy)2}n (1), {[Ag4(μ-η,η(2)-NO3)4](3-bdppmapy)2}n (2), {[Ag2(μ-η(2)-OAc)(μ-η,η(2)-OAc...

Leptospira interrogans serotype patoc exhibited an increasing growth response when cultivated in media containing from 50 to 250 ,ug of sodium oleate per ml. Leptospiral growth in the presence of 250 ,ug of sodium oleate per ml was as good as that in the basal medium which contained 700 Mig of oleic acid (in Tween 80) per ml. When positional isomers of oleic acid (9-octadecenoic acid) were pres...

A rapid, optimized, and sensitive reversed-phase high-performance liquid chromatographic (RP-HPLC) method has been developed for determination of pentoxifylline in human plasma. The analyte was extracted from the plasma with dichloromethane after addition of 0.2 mL 1 M NaOH. HPLC separation was performed on a C18 analytical column (250 mm × 4 mm i.d.) with acetonitrile–water, 45:55 (v/v), as mo...

From the sedimentation and diffusion constant values obtained in a solution containing 1 g./ 100 ml. H substance, and using the determined value of the partial specific volume, the molecular weight was calculated from the usual equation (Svedberg & Pedersen, 1940) giving a value of 320 000. From the same data the frictional ratio f/fo obtained was 4-2. This corresponds to an axial ratio of > 10...

The effect of inoculum size and medium volume on methionine production by Bacillus species EZ- 13 ZM-10 was studied. methionine-producing bacteria had already been isolated from within Anambra State University (now Chukwuemeka Odumegwu Ojukwu University), Uli campus State. They were purified identified as EZ-13 using cultural biochemical characteristics. Thereafter, they used to evaluated the i...

XRD and EDX analyses confirmed the presence of Ag in all coatings deposited using electrochemical method and silver. The mean thickness coating was noted to be highest in EHA/AG group (102.20 4.20 um) followed by PHA (76.40 2.20 um). Mean coating thicknesses in other groups were: PHA/AgNO3 (76.20 1.29 um); EHA (32.98 2.50 um); EHA/ Ag/2-layers (30.70 2.40 um); EHA/AgNO3 (8.60 0.60 um). The aver...

UNLABELLED Despite recent interest in organic electrochemical transistors (OECTs), sparked by their straightforward fabrication and high performance, the fundamental mechanism behind their operation remains largely unexplored. OECTs use an electrolyte in direct contact with a polymer channel as part of their device structure. Hence, they offer facile integration with biological milieux and are ...

Infrared-visible sum-frequency-generation spectroscopy (SFG) is used to investigate the interfacial structure of hexadecanol (C16H33OH) and heneicosane (C21H44) in contact with polystyrene films (PS) spin coated on a sapphire substrate. The interfacial structure of hexadecanol is very different from heneicosane in contact with PS. In the crystalline state, the hexadecanol molecules are oriented...

Moggi-Cecchi, G.Pratesi, I.A. Franchi, R.C. Greenwood, Museo di Scienze Planetarie, Via Galcianese 20/h, I59100 Prato, Italy, e-mail: [email protected], Dipartimento di Scienze della Terra dell'Università degli Studi di Firenze, Via G.La Pira 4, I-50123 Firenze, Italy, e-mail: [email protected], Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Ke...

Program in Health Sciences – Child and Adolescent Health of uring Hemo 2014, a tribute was paid to the dedication of three f our most experienced colleagues. In a special session of he congress, Professors Marcos Borato Viana, Celso Bianco, nd Roberto Passetto Falcão were honored in recognition of heir years of commitment to the fields of hematology and ransfusion medicine, in particular to tea...