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121.
122.
Roy S Zanotti KJ Murphy CT Tanious FA Wilson WD Ly DH Armitage BA 《Chemical communications (Cambridge, England)》2011,47(30):8524-8526
Guanine-rich peptide nucleic acid probes hybridize to DNA G quadruplex targets with high affinity, forming PNA-DNA heteroquadruplexes. We report a surprising degree of kinetic discrimination for PNA heteroquadruplex formation with a series of DNA targets. The fastest hybridization is observed for targets folded into parallel morphologies. 相似文献
123.
Alberola A Carter E Constantinides CP Eisler DJ Murphy DM Rawson JM 《Chemical communications (Cambridge, England)》2011,47(9):2532-2534
The β-sheet structure associated with chlorinated aromatics (d(Cl···Cl)≈ 4.0 ?) has been implemented to drive formation of π-stacked structures of dithiadiazolyl radicals. Both title compounds exhibit an increase in paramagnetism above 150 K but solid-state EPR studies indicate that the origin of the paramagnetism in these two systems is different. 相似文献
124.
The many-body diagrammatic Rayleigh-Schrödinger perturbation theory (RSPT) is used for the calculation of ionization potentials of open-shell systems with one unpaired electron. This theoretical approach is tested on the simple examples of NO2 and NF2 molecules described by the INDO semi-empirical hamiltonian. The first- and second-order results are presented. 相似文献
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127.
Isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS) was applied to the certification of Pb in four levels of NIST blood SRM, 955a. This standard reference material (SRM) represents a significant improvement over the previous blood reference material and will greatly aid method development. The lowest level, 47.76 ng/g Pb was determined with analysis uncertainty (95% CI, ID-ICP-MS uncertainties) of less than 1% and the highest level, 517.9 ng/g Pb to 0.3%. Uncertainty in the lowest level was due to sample inhomogeneity and variability in the analytical blank as the RSD on ratio measurements was typically better than 0.2%. Properly applied isotope dilution coupled with careful isotope ratio measurements on the ICP-MS offers precision and accuracy for blood Pb analyses beyond what is currently obtainable with routine methods. 相似文献
128.
N.
zkan A. St. J. Murphy R. N. Boyd A. L. Cole M. Famiano R. T. Güray M. Howard L.
ahin J. J. ZachR. deHaan J. Grres M. C. WiescherM. S. IslamT. Rauscher 《Nuclear Physics A》2002,710(3-4)
Total cross section measurements for the 102Pd(p, γ)103Ag and 116Sn(p, γ)117Sb reactions have been performed in the proton energy range 2.6 to 4.25 MeV, and for the 112Sn(α, γ)116Te reaction over the alpha beam energy range 7.0 to 10.5 MeV. An activation technique was used in which gamma rays from decays of the reaction products were detected off-line by two hyper-pure germanium detectors in a low background environment. Where possible, reaction rates are derived and the results compared to those of calculations generated by the NON-SMOKER and the MOST statistical model codes so as to judge their applicability for describing the cross sections needed for network calculations of nucleosynthesis in explosive astrophysical environments via the γ- and rp-processes. 相似文献
129.
Gerard J. Murphy 《Integral Equations and Operator Theory》1996,24(3):298-319
The concept of a twisted crossed product associated to a non-classical C*-dynamical system is introduced and studied. The relationship between a covariant projective representation of the system and the corresponding induced representation of the twisted crossed product is investigated, particularly from the point of view of determining when the induced representation is faithful. Conditions are given on the C*-dynamical system that ensure nuclearity, simplicity or primeness of the twisted crossed product. 相似文献
130.
In this paper we give an approximate probability distribution for the maximum order complexity of a random binary sequence. This enables the development of statistical tests based on maximum order complexity for the testing of a binary sequence generator. These tests are analogous to those based on linear complexity. 相似文献