The sedimentation velocity profiles of the entities in mouse bone marrow responsible for erythropoietic burst formation (BFU-E) and for erythrocytic colony formation (CFU-E) have been studied under conditions designed to determine whether the values observed are real or result from cell interactions occurring during culture of the fractions. Bone marrow cells of adult C3Hf/Bi mice were subjecte...

The pathogenic agent of influenza A has been sedimented from infected extra-embryonic fluids of the developing chick, embryo by ultracentrifugation. Material so obtained contains two fractions resolvable in the analytical centrifuge cell. The first, a homogeneous fraction, showed a sedimentation constant S(20) = 20 to 31 x 10(-13). The second showed a sedimentation constant S(20) = about 800 +/...

We describe a computational analysis method to evaluate the efficacy of immunomagnetic rare cell separation from non-Newtonian particulate blood flow. The core procedure proposed here is calculation of local viscosity distributions induced by red blood cell (RBC) sedimentation. Numerical calculation methods have previously been introduced to simulate particulate behavior of individual RBCs. How...

Abstract Water treatment of river water is generally carried out conventionally, a rapid sand filter consisting coagulation unit, flocculation, sedimentation, and filtration. One the disadvantages filters that it requires large volume for washing, inconsistent quality, escape microorganisms less than 0.01 mm in size. Membrane technology can solve this problem with advantages including more comp...

BACKGROUND Air-borne bacteria in the operating room (OR) may contaminate the surgical wound, either by direct sedimentation from the air or indirectly, by contaminated sterile instruments. Reduced air contamination can be achieved with an efficient ventilation system. The current study assesses the additive effect of a mobile laminar airflow (MLAF) unit on the microbiological air quality in an ...

Hotels produce wastewater as much 80% of the total use clean water, is categorized domestic wastewater. Hotel X a 4-star hotel with need for water 64,396 m3/day and waste produced 49.33 m3/day. Based on observations evaluations, it was concluded that X's treated at WWTP performance still not optimal. So method used in this research descriptively analyzing primary secondary data, then proceed ev...