منابع مشابه
Types of centrifugal separations
One way of improving the resolution of particles by size is to minimize the difference in RCF between the top and bottom of the sample. Practically this is achieved by layering the sample as a narrow band over a continuous density gradient. This is called rate-zonal gradient (sedimentation velocity) centrifugation; the conditions are chosen such that ρρ always remains greater than ρl. In a cont...
متن کاملCentrifugal Clarification of Molasses
The compositions of the various organic and inorganic species in cane molasses show wide variations. Centrifugation can be used to remove suspended so!id particles. The bulk of these are precipitated calcium compounds. Removal of calcium by precipitation and subsequent centrifugation can be enhanced by the addition of sulphuric acid. The effects of dilution, temperature, and acid addition on th...
متن کاملCentrifugal Agglutination for Diagnosis
coccus suspension with immune serum at 1,800 r.p.m. for 10 minutes, and obtained very encouraging results. Mayer and Dowling (1945) used a centrifugal method for the detection of agglutinins against meningococci and obtained highly specific results. Feldman (1946) used a similar method in the identification of cultures, specially those of the dysentery group. The present paper gives the results...
متن کاملCentrifugal pump failures.
Centrifugal pumps will not pass gross quantities of gaseous emboli due to the nonocclusive nature of the pump. However, retrograde flow can occur under circumstances that include: product malfunctions, low flows, and human errors. Negative pressure created by falling arterial perfusate can draw air into the cannula. Food and Drug Administration (FDA) records about centrifugal pump malfunctions ...
متن کاملA Centrifugal Gradocol Filter.
Details of a centrifugal Seitz filter for sterilizing small quantities of fluid were reported some months ago in this journal (Hilson and Elek, 1950). It was then considered that a similar filter, fitted with a gradocol membrane (Elford, 1931) for virus or bacteriophage work where an asbestos pad is not suitable, might be useful. Moreover, a suggestion has been made (Latner and Slack, 1950) tha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1985
ISSN: 0028-0836,1476-4687
DOI: 10.1038/313259d0