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71.
Faldella Eugenio Ghedini Silvano Morandi Carlo 《IEEE transactions on bio-medical engineering》1981,(11):761-766
This paper describes a measurement technique for precise evaluation of hematic ocular flow. The main characteristics and advantages of the proposed technique over conventional approaches are first pointed out. Next, the design criteria and the performance achievable with the prototype instrument developed to carry out the measurement completely automatically, are examined in detail. The instrument, thanks to its microprocessor-based implementation, allows a certain degree of tailoring of the measurement in accordance with the patient's peculiarities. Moreover, it provides the possibility of monitoring the ocular arterial inflow during the test, thus guaranteeing that safety limits will not be exceeded. 相似文献
72.
73.
A computer subprogram for the direct in-core solution of large symmetric systems of linear algebraic equations is presented. The procedure employs a sparse matrix technique and allows for symmetrical pivoting and reordering to improve numerical stability and reduce core allocation. The work is especially oriented to problems deriving from minimum or stationary principles in structural analysis. A FORTRAN print-out of the complete package is given in the Appendix. 相似文献
74.
A new dynamic programming algorithm for fast rescheduling thermal generation is presented. The savings in computational times are brought about by the introduction of two new techniques: the variable truncation dynamic programming and the limitation of the solution space to be searched. Several examples on a 20 machine system are used to illustrate the application of the algorithm and to show that optimal solutions are obtained at significantly reduced computational times. 相似文献
75.
76.
Lapolla A Reitano R Seraglia R Sartore G Ragazzi E Traldi P 《Molecular nutrition & food research》2005,49(7):685-690
Advanced glycation end products (AGE) and dicarbonyl compounds accumulate in serum and tissues of patients with diabetes and chronic renal failure. Pentosidine, free pentosidine, glyoxal and methylglyoxal have been evaluated in plasma of diabetic patients with poor metabolic control at baseline and after the improvement of glycemic levels, and in plasma and peritoneal dialysate of patients with renal failure before and after 12 h of peritoneal dialysis. In diabetic patients, acceptable metabolic control was unable to normalize levels of pentosidine (after 2 and 10 months), glyoxal and methylglyoxal (after 2 months). In patients with end-stage renal disease, mean values of pentosidine, free pentosidine, glyoxal and methylglyoxal decreased in plasma after dialysis. No pentosidine or free pentosidine were present in the peritoneal dialysate at time 0, but were found after 12 h of peritoneal dialysis; glyoxal and methylglyoxal decreased after 12 h of dialysis. So, glyoxal and methylglyoxal, already present in the dialysis fluid, can react with the peritoneal matrix protein, giving a reason for the gradual loss of peritoneal membrane function often observed in patients undergoing long-term peritoneal dialysis. 相似文献
77.
Eduardo N. Dvorkin Eugenio Onte Javier Oliver 《International journal for numerical methods in engineering》1988,26(7):1597-1613
An incremental Total Lagrangian Formulation for curved beam elements that includes the effect of large rotation increments is developed. A complete and symmetric tangent stiffness matrix is obtained and the numerical results show, in general, an improvement over the standard formulation where the assumption of infinitesimal rotation increments is made in the derivation of the tangent stiffness matrix. 相似文献
78.
The treatment of sulfate-rich wastewater using an anaerobic sequencing batch biofilm pilot-scale reactor 总被引:1,自引:0,他引:1
This paper presents the results from 92 cycles of an anaerobic sequencing batch biofilm reactor containing biomass immobilized on inert support (mineral coal) applied for the treatment of an industrial wastewater containing high sulfate concentration. The pilot-scale reactor, with a total volume of 1.2 m3, was operated at sulfate loading rates ranging from 0.15 to 1.90 kgSO42−/cycle (48 h — cycle) corresponding to sulfate concentrations of 0.25 to 3.0 gSO42− l− 1. Domestic sewage and ethanol were utilized as electron donors for sulfate reduction. Influent sulfate concentrations were increased in order to evaluate the minimum COD/sulfate ratio at which high reactor performance could be maintained. The mean sulfate removal efficiency remained between the range of 88 to 92% at several sulfate concentrations. Temporal profiles along the 48 h cycles were carried out under stable operation at sulfate concentrations of 1.0, 2.0 and 3.0 gSO42− l− 1. Sulfate removal reached 99% for cycle times of 15, 25, and 30 h, and the effluents sulfate concentrations were lower than 8 mgSO42− l− 1. The results demonstrate the potential applicability of the anaerobic configuration for the biological treatment of sulfate-rich wastewaters. 相似文献
79.
80.
Vaz Isabela C. F. Macchi Carlos Eugenio Somoza Alberto Rocha Leandro S. R. Longo Elson Cabral Luis da Silva Edison Z. Simões Alexandre Zirpoli Zonta Giulia Malagù Cesare Desimone P. Mariela Ponce Miguel Adolfo Moura Francisco 《Journal of Materials Science: Materials in Electronics》2022,33(15):11632-11649
Journal of Materials Science: Materials in Electronics - This study reports the electrical properties of Nd-doped cerium oxide (CeO2) films synthesized by microwave assisted hydrothermal using a... 相似文献