Rotation, tillage, and variety main effects on grain yield were all significant in 2002. Rice grain yield, over all treatment combinations, averaged 159 bu/acre, which was 22 bu/acre more than in 2001. Grain yields for the two 3-phase rotations were 180 bu/acre for the rice-corn-soybeans rotation and 177 bu/acre for the rice-corn (wheat)soybean rotation. These yields were slightly better than t...

Bis(sulfurdiimido)tin compounds of the type R2Sn[(NSN)'Bu]2 [R = Me (2a), Et (2b)] re­ act with triethylborane Et^B by rearrangement and N-ethylation to give the novel aminoborane derivatives R2Sn[N('Bu)SN(Et)BEt2]2 (5a, b), in the same way as "Bu3Sn(NSN)'Bu (1) reacts with Et.̂ B to give "Bu3Sn[N('Bu)SN(Et)BEt2] (4). In contrast, 2c (R = 'Bu) and tris(sulfurdiimido)tin compounds RSn[(NSN)'Bu]3 ...

BACKGROUND Cameroon is endemic for Buruli ulcer (BU) and organised institutional BU control began in 2002. The objective was to describe the evolution, achievements and challenges of the national BU control programme (NBUCP) and to make suggestions for scaling up the programme. METHODS We analysed collated data on BU from 2001 to 2014 and reviewed activity reports NBUCP in Cameroon. Case-dete...

A comparative study of three strategies used to synthesize well-defined carboxyl-end-capped polystyrenes is reported. Structural characterization was carried out using a combination of thin-layer chromatography (TLC) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). For the reaction of polystyryl anions with 4-bromo-1,1,1-trimethoxybutane, in addit...

5-Bromouracil (BU)-tolerant mutants of Bacillus subtilis 23 (thy his) have been isolated. Several classes of tolerant mutants were obtained by a sequential selection procedure. The classes can be distinguished by their relative BU tolerance as well as several other phenotypic characteristics. The mutants can grow for an extended period of time in minimal medium supplemented with amino acids and...

Busulfan (BU) is a widely used myeloablative and antineoplastic agent in clinical bone marrow transplantation (BMT). The lower incidence of BU-associated toxicities and lower therapeutic effectiveness in young children given BU doses based on body weight (ie, 16 mg/kg) is associated with altered pharmacokinetics of BU; the area under the curve (AUC) of BU concentration versus time is significan...

With asynchronous packet arrivals, we nd that, when the number of packet its is close to the fan-in of the crossbar switch, performance of a non-multiport central bu er switch becomes comparable to its multiport counterpart. Assuming the same amount of bu er memory, simulations of oblivious routing on hypercube indicate that split input bu ering outperforms central bu ering, even when dedicated...

A new method for the preparation o f monoalkylamides o f composition Cp'TiCl2N H R is reported. Me3SnNHR (R = /Bu la , CH/Pr-, lb ) reacts with Cp'TiCl3 with elimination o f M e3SnCl to yield Cp'TiCLNHR (2) (2a: Cp' = C5H 5, R = /Bu, 2b: Cp' = Me3SiC5H4, R = t Bu, 2c: Cp' = (M e3Si)?C5H3, R = /Bu, 2d: Cp' = Me4C5H, R = /Bu, 2e: Cp' = Me5C5, R = t Bu, 2f: Cp' = C5H 5, R = CH/Pr2, 2g: Cp' = M e3S...

BACKGROUND Buruli ulcer (BU), caused by Mycobacterium ulcerans (M. ulcerans), is a necrotizing skin disease found in more than 30 countries worldwide. BU incidence is highest in West Africa; however, cases have substantially increased in coastal regions of southern Australia over the past 30 years. Although the mode of transmission remains uncertain, the spatial pattern of BU emergence in recen...

Risk factors for Buruli ulcer (BU) are poorly understood. We conducted a case-control study in southern Benin to investigate the association between haemoglobin variants S or C and BU, and particularly the association between haemoglobinopathies HbSS/SC and BU osteomyelitis. We compared the haemoglobin genotype of 179 patients with BU and 44 with BU osteomyelitis to that of 242 community contro...