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91.
We analyze how to solve hyperbolic PDEs with compactly supported orthonormal wavelets adaptively. We use thresholded wavelet expansions of signals and operators. A tree structure is used to represent the signal, and a multidimensional analogue of the fast wavelet transform is used to expand the operators. We solve the advection equation and Burgers' equation on a periodic domain. 相似文献
92.
93.
Mats Hamberg 《Lipids》1989,24(4):249-255
The major part (80%) of the fatty acid hydroperoxide isomerase activity present in homogenates of the fungus,Saprolegnia parasitica, was localized in the particle fraction sedimenting at 105,000×g.
13(S)-Hydroperoxy-9(Z),11(E)-octadecadienoic acid and 9(S)-hydroperoxy-10(E),12(Z)-octadecadienoic acid were both good substrates for the particle-bound hydroperoxide isomerase. The products formed from
the 13(S)-hydroperoxide were identified as an α,β- and a γ,δ-epoxy alcohol, i.e., 11(R),12(R)-epoxy-13(S)-hydroxy-9(Z)-octadecenoic acid and 9(S),10(R)-epoxy-13(S)-hydroxy-11(E)-octadecenoic acid, respectively. The 9(S)-hydroperoxide was converted in an analogous way into an α,β-epoxy alcohol, 10(R),11(R)-epoxy-9(S)-hydroxy-12(Z)-octadecenoic acid and a γ,δ-epoxy alcohol, 12(R),13(S)-epoxy-9(S)-hydroxy-10(E)-octadecenoic acid.
9(R,S)-Hydroperoxy-10(E),12(E)-octadecadienoic acid and 13(R,S)-hydroperoxy-9(E),11(E)-octadecadienoic acid were poor substrates for theS. parasitica hydroperoxide isomerase. Experiments with 13(R,S)-hydroperoxy-9(Z),11(E)-octadecadienoic acid showed that the 13(R)-hydroperoxy enantiomer was slowly isomerized by the enzyme. The major product was identified as α,β-epoxy alcohol 11(R),12(R)-epoxy-13(R)-hydroxy-9(Z)-octadecenoic acid. 相似文献
94.
Tuomisto Martti T.; Majahalme Silja; K?h?nen Mika; Fredrikson Mats; Turjanmaa V?in? 《Canadian Metallurgical Quarterly》2005,24(1):77
Increased blood pressure (BP) reactivity to subtypes of psychological stimuli may differentially predict the development of future BP elevation or hypertension. The authors present the 9-12-year follow-up results of 82 (86%) of 95 male participants with different BP levels. They were healthy, untreated, and age-matched volunteers from a routine health checkup carried out on all 35-, 40-, and 45-year-olds from a medium-sized city. Intra-arterial systolic blood pressure (SBP) during the psychological tasks improved the prediction of future casual SBP and noninvasive 24-hr ambulatory SBP compared with predictions from casual diagnostic measurements. Diastolic blood pressure (DBP) was very useful when added to casual DBP in predicting the need for antihypertensive medication. Reactivity to active tasks especially predicts the need for antihypertensive medication. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
95.
Diffusion and interface control of reactions in alloys 总被引:6,自引:0,他引:6
Mats Hillert 《Metallurgical and Materials Transactions A》1975,6(1):5-19
96.
Eija Jms Heidi Holkeri Helena Vihinen Mats Wikstrum Marjo Simonen Bjrn Walse Nisse Kalkkinen Juha Paakkola Marja Makarow 《Yeast (Chichester, England)》1995,11(14):1381-1391
Escherichia coli β-lactamase was secreted into the culture medium of Saccharomyces cerevisiae in biologically active form, when fused to the C-terminus of the hsp150δ-carrier. The hsp150δ-carrier is an N-terminal fragment of the yeast hsp150 protein, having a signal peptide and consisting mostly of a 19 amino acid peptide repeated 11 times in tandem. Here we expressed the hsp150δ-carrier fragment alone in S. cerevisiae. Apparently due to a positional effect of the gene insertion, large amounts of the hsp150δ-carrier were synthesized. About half of the de novo synthesized carrier molecules were secreted into the culture medium, the rest remaining mostly in the pre-Golgi compartment. The extensively O-glycosylated carrier fragment was purified from the culture medium under non-denaturing conditions. Circular dichroism spectroscopy showed that it had no regular secondary structure. Nuclear magnetic resonance spectroscopy showed that a non-glycosylated synthetic peptide, the consensus sequence of the repetitive 19 amino acid peptide, also lacked secondary structure. The unstructured carrier polypeptide may facilitate proper folding and secretion of heterologous proteins attached to it. 相似文献
97.
Hans Harvig Gernot Kirchner Mats Hillert 《Metallurgical and Materials Transactions B》1972,3(1):329-332
The thermodynamics of ferrite containing dissolved copper is analyzed theoretically, taking into account the effect of copper
on the Curie temperature. By combination with experimental information on the solubility of copper in austenite, this model
is used to predict the solubility of copper in ferrite. The result shows good agreement with experimental data but indicates
that the data should be extrapolated in a manner different from that which has been previously suggested. The effects of copper
and cobalt on the relative stability of the α and γ phases in iron-rich alloys are compared. It is concluded that their difference
is mainly caused by the difference in their effects on the Curie temperature of α-iron. 相似文献
98.
Mats Hillert 《Calphad》1985,9(2):143-151
In this paper the system NaClCaCl2SrCl2 and its binary systems were studied. Using a previously calculated phase diagram of the NaClCaCl2SrCl2 system as a basis, accurate measurements were carried out by MDTA with high sensitivity. It is a simple eutectic system with a eutectic point at 41.9 mol % NaCl, 40.C mol % CaCl2, 18.1 mol % SrCl2, 744 K. In the liquidus surface for saturation with the CaCl2SrCl2 solid solution a univariant line starts from a point 24.8 mol % NaCl, 50.1 % CaCl2, 25.1 mol % SrCl2 at 823 K. The uncertainty in the liquidus temperatures is estimates to be less than ±5K, for the reason that the errors due to Supercooling and change of sample compositions were reduced by our experimental method.A new calculation of the phase diagram of the NaClCaCl2SrCl2 system has been performed with a new asymmetric method. It is based upon a critical assessment of the thermodynamic properties and phase diagrams of the binary systems.The agreement between our present measured and calculated phase diagrams is within ±2.5 mol %. Their good agreement indicates that the phase diagram calculated from the binary data is relatively sensitive to the se1f-consistency between thermodynamic properties and phase diagrams of binary systems. 相似文献
99.
Mats Hillert 《Journal of Phase Equilibria》1982,3(1):4-8
Two general equations for the slopes of phase boundaries are given for the purpose of promoting numerical calculations of phase diagrams. The entropy enters into the basic equation and it is shown when it can be substituted by the corresponding enthalpy. The equations are used to demonstrate some features of phase diagrams, which are generalizations of features discussed in a recent paper by D. Goodman, J.W. Cahn, and L. Bennett. 相似文献
100.