摘要:

AbstractHuman blood (blood bank, expired) sheared through stainless steel capillary tubing (508 μm ID) is analyzed for plasma hemoglobin to study the effect of shear‐induced blood damage within the low‐stress regime (stress ≤ 20 Pa). Blood damage results are described in terms of capillary length (related to blood residence time) and wall shear rate for assessing bulk and surface effects. A phenomenological model is proposed to explain these experimental results, obtained over a shear rate range to 7,0

ISSN:0001-1541    

DOI:10.1002/aic.690330112

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

摘要:

AbstractIn centrifugal filtration, centrifugal forces serve as the driving force in the production of cakes. Centrifugal sedimentation leads to formation of a clear supernatant followed by a slurry and a cake that grows and compacts simultaneously. The slurry concentration is independent of radius but decreases everywhere within the suspension at the same rate with respect to time. The theoretical analysis of centrifugal filtration presented here takes cake compressibility and variable permeability into account. Experiments were carried out under low driving forces with a centrifuge having a diameter of 150 mm and speeds of 1,000–2,000 RPM. With centrifugal accelerations of 75–300gand pressure differentials under 1 atm, the sedimentation process was relatively slow and could be observed experimentally with e

ISSN:0001-1541    

DOI:10.1002/aic.690330113

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

摘要:

AbstractTwo distinctly different mechanisms that lead to growth rate dispersion have been observed experimentally. One of the mechanisms involves an initial growth rate distribution among nuclei, while the other allows crystal growth rates to fluctuate. The model formulated in the present work includes both phenomena. Solutions to population balances in a continuous mixed‐suspension, mixed‐product removal continuous crystallizer and a constant‐supersaturation batch crystallizer are obtained in terms of parameters characterizing the two mecha

ISSN:0001-1541    

DOI:10.1002/aic.690330114

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

摘要:

AbstractAn approach to chemical plant fault diagnosis is presented that utilizes patterns of violation and satisfaction of the quantitative constraints governing the process. Process knowledge consists of a list of the operational constraints on the plant together with sufficient conditions for violation of each constraint. Interpretation of the pattern of constraint violations is treated by Boolean and non‐Boolean techniques. It is shown that non‐Boolean reasoning techniques increase the stability and sensitivity of the diagnosis in the presence of noise. The techniques introduced in this paper are easily implemented in rule‐based expert systems using certainty fa

ISSN:0001-1541    

DOI:10.1002/aic.690330115

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330116

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330117

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330118

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330119

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330120

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690330121

出版商:American Institute of Chemical Engineers    

年代:1987

数据来源: WILEY