While in the non-stationary scenario, this situation would raise the major problem generating pronounced estimation variation for the reason that only a small piece of samples could be considered as stationary and processed once with autocorrelation estimation in STFT-CS.
We need a very small piece of sample for testing, just 1 cubic centimeter, or about the size of your pinky nail.
A transverse cut was made through the midportion of the prostate, and a small piece of sample (5 mm in each dimension) was taken in the peripheral zone for analysis.
For light microscopy (LM) of sporangia and sporangiophores, small pieces of the samples were transferred to 5% chloral hydrate to restore turgidity.
Briefly, the embryonic heart was dissected into small pieces of tissue samples under the light microscope.
Small pieces of liver samples from each group were dissected and fixed in 10 % neutral formalin, dehydrated in ascending grades of alcohol and embedded in paraffin wax.
Small pieces of lung samples were homogenized using a lysis buffer (50 mM Tris, 150 mM NaCl, 1% Igepal, 5 mM EDTA, 1 mM DTT, 1/1000 protease inhibitor) for 30 min at 4°C, in an orbital mixer.
Small pieces of plant sample material (1 g) or soil (2 g) were weighed into a 50-ml tube, and internal standard Cl2-CAP was added.
Advantages with these statistical methods include measurements of phylogenetic relationship with relatively small pieces of DNA sampled from almost anywhere within genomes, detection of foreign/conserved DNA, and homology searches.
Small pieces of the muscle samples were homogenised following standard procedures, 16 which resulted in a solution containing isolated myofibrils.
