In this paper, a mathematical model is developed to calculate the conversion and the residence time reaction for plug flow and mixed flow in the reactors filled with cylin-drical particles using the shrinking core model. In this modeling, the size of the particles is un-chamged during the reaction. Also, the reaction rate is controlled by the gas layer resistance, the ash layer resistance, and ...

The effect of leukopenia on the susceptibility of rabbits to the localized Shwartzman reaction was studied in those receiving whole body irradiation and nitrogen mustard respectively. Of animals receiving nitrogen mustard in which the total polymorphonuclear leukocyte count was less than 100 cells/c.mm. only 17 per cent developed positive local Shwartzman reactions whereas 75 per cent of irradi...

Mixed lymphocyte reactions occur when mouse spleen cell populations depleted of thymus-derived (T) lymphocytes are cultured with allogeneic target cells inactivated by mitomycin C or X irradiation, and when F(1) hybrid responder cells are cultured with inactivated parental target cells. These responses might be interpreted as indicating that T lymphocytes are not required for responsiveness and...

by Spencer Greene R e c e n t n e w s t h a t t h e University's Board of Governors will be considering South-Afr icarelated investments prompted a mixed reaction f rom Rice faculty members last week. Professors w h o spoke to the Thresher expressed a general air of caution, many describing the issue as "complex" and declining fur ther comment without detailed study of the subject. Several, how...

Cerebrovascular inflammation contributes to secondary brain injury following ischemia. Recent in vitro studies of cell migration and molecular guidance mechanisms have indicated that the Slit family of secreted proteins can exert repellant effects on leukocyte recruitment in response to chemoattractants. Utilizing intravital microscopy, we addressed the role of Slit in modulating leukocyte dyna...

A 60-year-old male with locally invasive bladder carcinoma (pT4 pNo Mo) had a remarkable leukocytosis of 64,900/mm3 in the peripheral blood count without any findings of inflammatory disease. The grade 3 transitional cell carcinoma (TCC) measuring 60 by 58 mm involved the prostate, but radiological examinations including abdominal CT scan and isotopic bone scan failed to prove distant metastasi...

Repeatedly transfused thrombocytopenic patients frequently form antibodies directed against human leukocyte antigens (HLA) and become unresponsive to random donor platelet transfusions. Although exposure to foreign antigens borne on donor leukocytes appears necessary to provoke primary sensitization, the stability of leukocyte antigens during routine platelet storage is largely unknown. Accordi...

the aim of this study was to investigate the association of bovine leukocyte antigen-drb3 alleles with peripheral blood mononuclear cell (pbmc) proliferation in response to staphylococcus aureus. the animals included in this study (n=347) were approximately of same age and comprised of f2 holstein-friesian ´ charolais (n = 155), holstein-friesian backcross (f0 holstein-friesian dams crossed wit...

Lysates of mixed human leukocyte suspensions released histamine from intact human leukocytes in vitro. Microgram quantities of leukocyte lysate protein released up to 90% of the total available histamine. The mixed leukocyte lysates were separated by differential centrifugation into nuclear (800 g pellet), lysosomal (25,000 g pellet), and postlysosomal supernatant (25,000 g supernatant) fractio...