Limiting spheroid size as a function of growth factor source location

Acoustic wavefield evolution as function of source location perturbation

The wavefield is typically simulated for seismic exploration applications through solving the wave equation for a specific seismic source location. The direct relation between the form (or shape) of the wavefield and the source location can provide insights useful for velocity estimation and interpolation. As a result, I derive partial differential equations that relate changes in the wavefield...

Pressure as a Limiting Factor for Life

Facts concerning the stability and functioning of key biomolecular components suggest that cellular life should no longer be viable above a few thousand atmospheres (200-300 MPa). However, organisms are seen to survive in the laboratory to much higher pressures, extending into the GPa or even tens of GPa ranges. This is causing main questions to be posed concerning the survival mechanisms of si...

Inoculum size as a factor limiting success of inoculation for biodegradation.

A study was conducted to determine the role of inoculum size of a bacterium introduced into nonsterile lake water in the biodegradation of a synthetic chemical. The test species was a strain of Pseudomonas cepacia able to grow on and mineralize 10 ng to 30 micrograms of p-nitrophenol (PNP) per ml in salts solution. When introduced into water from Beebe Lake at densities of 330 cells per ml, P. ...

Residue of horse serum purification as a nitrogen source for growth of microorganisms, l-Clostridia

Diagnostic Value of Serum Levels of Vascular Endothelial Growth Factor as a Marker of Tubal Pregnancy

Background and purpose: Tubal pregnancy is a life threatening condition that not only causes mortality but also reduces fertility by less than 50%. In many patients, the level of βhCG does not reach detection threshold, and for definite diagnosis, long-term follow-up considering βhCG titration and transvaginal ultrasonography are needed which could lead to delay in diagnosis and treatment. The ...