Matthews studies

The course of the reaction can be determined not only by the amount of product formed but also by the change in concentration of the actual oxidant. It is often difficult to determine the true concentration of the oxidant, because of its transient nature, or to determine in what form the oxidant is reacting with the sugar. Bunzel and Matthews studied the rate of reaction of bromine with D-glucose quite extensively and determined the specific reaction rates. The reaction rates were related to the bromine concentration and it was concluded that the free halogen, rather than hypobromous acid, was the oxidant. 

Matthews-Akgerman The free-volume approach of Hildebrand was shown to be valid for binary, dilute liquid paraffin mixtures (as well as self-diffusion), consisting of solutes from Cg to Cig and solvents of Cg and C o- The term they referred to as the diffusion volume was simply correlated with the critical volume, as = 0.308 V. We can infer from Table 5-15 that this is approximately related to the volume at the melting point as = 0.945 V, . Their correlation was vahd for diffusion of linear alkanes at temperatures up to 300°C and pressures up to 3.45 MPa. Matthews et al. and Erkey and Akger-man completea similar studies of diffusion of alkanes, restricted to /1-hexadecane and /i-octane, respectively, as the solvents. 

Protein crystals contain between 25 and 65 vol% water, which is essential for the crystallisation of these biopolymers. A typical value for the water content of protein crystals is 45% according to Matthews et al. l49,150). For this reason it is possible to study the arrangement of water molecules in the hydration-shell by protein-water and water-water interactions near the protein surface, if one can solve the structure of the crystal by X-ray or neutron diffraction to a sufficiently high resolution151 -153). 

Fung, I. Y., Prentice, K. C., Matthews, E., Lerner, J. and Russell, G. (1983). Three-dimensional tracer model study of atmospheric CO2 Response to seasonal exchanges with the terrestrial biosphere, /. Geophys. Res. 88,1281-1294. 

Careful empirical selection of the expression platform for carotenogenesis has included selection of the best strains for stability and degree of accumulation and the selection of compatible drug-resistance combinations and low copy number polycistronic plasmids to enhance product accumulation by decrease of metabolic burden." 5 Matthews and Wurtzel discussed culture and induction conditions - that have been explored in most studies. Most efforts to engineer carotenoid biosynthesis in E. coli focused on the genes and enzymes of the pathway and had a modest effect on improved accumulation. For example, substitution and over-expression of a GGPPS that uses IPP directly (discussed in... 

Essentially identical conclusions arose from the studies of Matthews et al. [138], An anti-peptide antibody directed against the cytoplasmically exposed C-terminal region of the Ca " -ATPase (985-994) reacted freely in native sarcoplasmic reticulum, in agreement with earlier observations [137], while the antibody directed against the putative luminal loop (877-888) reacted strongly only after solubilization of sarcoplasmic reticulum with Ci2Eg, Purified ATPase preparations reacted freely with both antibodies under both conditions. A 30-kDa protease-resistant fragment obtained... 

Despite the potential problems, two recent studies provide positive results. Matthews et al. (2000) analyzed the 5D of fluid inclusions in present-day cave carbonates from Soreq cave (Israel) using the method of thermal vacuum extraction and standard techniques on cave pool water from the same cave to estimate isotopic fractionation during measurement (Aex = 5Dextracted water - 8Dcave water). After subtracting Aex from 5D... 

Guinsburg, Arlene Miller. Paracelsian magic and theology A case study of the "Matthew" commentaries. Medizinhistorische Journal 16 (1981). 

A recent study by Matthews et al.94 on the reactivity of products of the association reactions,... 

Abdel-Hamid, F.M., J.A. Moore, and H.B. Matthews. 1981. Comparative study of 3,4,3, 4 -tetrachlorobiphenyl in male and female rats and female monkeys. Jour. Toxicol. Environ. Health 7 181-191. 

L. Matthews. Jefferson, NC McFarland, 1998. Contains chapters written by a psychologist, an attorney and two physicians with expertise in MCS. A medical section addresses porphyria, SPECT scan studies, and psychological issues related to MCS. A legal section discusses how one state s workers compensation system fails workers in a toxic age. A personal section discusses the author s experience in the workers compensation system science and the literature is addressed in yet another section. 

The closest organic specie to the inorganic boric acid are the boronic acids generally described as R-B(OH)2. Boronic acids have been shown to act as inhibitors of the subtilisins. X-ray crystallographic studies of phenylboronic acid and phenyl-ethyl-boronic acid adducts with Subtilisin Novo have shown that they contain a covalent bond between the oxygen atom of the catalytic serine of the enzyme and the inhibitor boron atom (Matthews et al, 1975 and Lindquist Terry, 1974). The boron atom is co-ordinated tetrahedrally in the enzyme inhibitor complex. It is likely that boric acid itself interacts with the active site of the subtilisins in the same manner. 

Matthews, D.A. Alden, R.A Birktoft, J.J. Freer, S.T. Kraut, J (1975) X-ray Crystallographic Study of Boronic Acid Adducts with Subtilisin BPN (Novo). J. Biol. Chem. 250, 7120-7126. 

Swindle TD, Podosek FA (1988) Iodine-Xenon dating. In Meteorites and the Early Solar System. Kerridge JF and Matthews MS (eds) University of Arizona Press, Tucson, p 1114-1146 Tang M, Lewis RS, Anders E (1988) Isotopic anomalies of Ne, Xe, and C in meteorites. I. Separation of carriers by density and chemical resistance. Geochim Cosmochim Acta 52 1221-1234 Tera F, Eugster O, Burnett DS, Wasserburg GJ (1970) Comparative study of Li, Na, K, Rb, Cs, Ca, Sr and Ba abundances in achondrites and in Apollo 11 lunar samples. Geochim Cosmochim Acta Suppl 1 1637-1657... 

Mandemack KW, Bazylinski DA, Shanks III WC, Bullen TD (1999) Oxygen and iron isotope studies of magnetite produced by magnetotactic bacteria. Science 285 1892-189 Mann S, Sparks NHC, Couling SB, Larcombe MC, Franke RB (1989) Crystallochemical characterization of magnetite spinels prepared from aqueous solution. J Chem Soc Far Trans 85 3033-3044 Matthews A, Zhu XK, O Nions K (2001) Kinetic iron stable isotope fractionation between iron (-II) and (-III) complexes in solution. Earth Planet Sci Lett 192 81-92... 

Doe BR (1994) Zinc, copper, and lead in mid-ocean ridge basalts and the source rock control on Zn/Pb in ocean-ridge hydrothermal deposits. Geochim Cosmochim Acta 58 2215-2223 Ehrlich S, Butler I, Halicz L, Rickard D, Oldroyd A, Matthews A (submitted) Experimental study of copper isotope fractionation between aqueous Cu(II) and covellite, CuS. Chem Geol Finney LA, O Halloran TV (2003) Transition metal speciation in the cell insights from the chemistry of metal ion receptors. Science 300 931-936... 

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