Large-scale oil and gas exploration started in the East African Rift basins in 1982 (Yapaskurt 1989), but positive results were obtained only during the last 12 years when large oil reserves were discovered in the basins of the western branch of the East African Rift system (Davison et al. 2014).
Recently, Aggarwal (2011) compared GPS-TEC with the output of the IRI-2007 model at Rajkot, a station near the northern anomaly crest region in India, and found that good agreement between observations and the model is obtained only during daytime hours.
Positive culture results were obtained only during the second year of our study, through the use of better aseptic conditions during dissection, the crushing of kidney samples and sedimentation of the debris before mixing the supernatant with fresh medium.
Diminished cell growth was obtained only during cultivation with gluconate plus DTDP (Fig. 2).
However, the adherent cells were obtained only during the early phase after surgery.
The investigations on the pathogenesis of epilepsy are rarely carried out based on the human tissues, which can be obtained only postmortem or during the surgical resection of epileptic foci.
Because human tissues for the research of epilepsy can be obtained only postmortem or during surgical resection of epileptic foci, the investigations of the most interesting period of epileptogenesis are carried out based on animal models of the disease.
However, defects free and superior products can be obtained only if the process parameters are carefully controlled during forming.
Since the Hessian is obtained only once during the entire procedure, it is more efficient compared to Newton's method where an approximate Hessian is obtained for every iteration.
Because of the low concentration of the plume, SO2/H2S and CO2/SO2 ratios were obtained only 15 and 3 times during the one-year observation, respectively.
Plasma samples were obtained only from indwelling catheters or during scheduled laboratory collections.
