Jim Simpson

Learn More
— We have developed an experimental 4-channel stimulator prototype capable of performing voltage controlled stimulation (VCS), current controlled stimulation (CCS), and switched capacitor based stimulation (SCS) all on the same platform for neurological experiments. The stimulator allows changing main stimulation parameters such as amplitude, pulse width,(More)
INTRODUCTION Preoperative identification and treatment of anaemia is advocated as part of Patient Blood Management due to the association of adverse outcome with the perioperative use of blood transfusion. This study aimed to establish the rate of anaemia identification, treatment and implications of this preoperative anaemia on ARBT use. METHODS All(More)
We describe a system that allows researchers to control an implantable neural microstimulator from a PC via a USB 2.0 interface and a novel dual-carrier wireless link, which provides separate data and power transmission. Our wireless stimulator, Interestim-2B (IS-2B), is a modular device capable of generating controlled-current stimulation pulse trains(More)
Resource Group) provided immeasurable support and assistance with database management, technology (STRATUM and PDAs), editing and formatting. Van Wieren (Tree Trust) trained and coordinated the volunteers and provided a welcome environment while in Minnesota. Resources) were also instrumental in training the volunteers. Jim Baldwin (USDA Forest Service) and(More)
The title compound, C24H21ClN2O, crystallizes with two unique mol-ecules in the asymmetric unit. In each mol-ecule, the central imidazole ring is substituted at the 2-, 4- and 5-positions by benzene rings. The 2-substituted ring carries a Cl atom at the 4-position. One of the imidazole N atoms in each mol-ecule has a propan-2-ol substituent. In the crystal,(More)
The isomeric derivatives 1,2-bis-(iodo-meth-yl)benzene, (I), and 1,3-bis-(iodo-meth-yl)benzene (II), both C8H8I2, were prepared by metathesis from their di-bromo analogues. The ortho-derivative, (I), lies about a crystallographic twofold axis that bis-ects the C-C bond between the two iodo-methyl substituents. The packing in (I) relies solely on C-H⋯I(More)
The title compound, C16H10, crystallizes with four unique mol-ecules, designated 1-4, in the asymmetric unit of the monoclinic unit cell. None of the mol-ecules is planar, with the benzene rings of mol-ecules 1-4 inclined to one another at angles of 42.41 (4), 24.07 (6), 42.59 (4) and 46.88 (4)°, respectively. In the crystal, weak C-H⋯π(ring) interactions,(More)
The title compound, C21H16N2O, has an almost planar (r.m.s. deviation = 0.0074 Å) 1,2-di-benzyl-idenehydrazine backbone with an approximately orthogonal almost planar (r.m.s. deviation = 0.0368 Å) phenyl-ethanone substituent on one of the imine C atoms. The dihedral angle between the two mean planes is 76.99 (4)°. In the crystal, mol-ecules are linked via(More)
The title compound C25H29BrClNO4, comprises a 3,3,6,6-tetra-methyl-tetra-hydro-acridine-1,8-dione ring system that carries a hy-droxy-ethyl substituent on the acridine N atom and a 3-bromo-5-chloro-2-hy-droxy-phenyl ring on the central methine C atom of the di-hydro-pyridine ring. The benzene ring is inclined to the acridine ring system at an angle of 89.84(More)
The title compounds, [Co2(C8H11BrO3)(CO)6], (1), and [Co2(C12H16Br2O4)(CO)6], (2), result from the replacement of two carbonyl ligands from dicobalt octa-carbonyl by the alkynes 4-hy-droxy-but-2-ynyl 2-bromo-2-methyl-propano-ate and but-2-yne-1,4-diyl bis-(2-bromo-2-methyl-propano-ate), respectively. Both mol-ecules have classic tetra-hedral C2Co2 cluster(More)