Scientific Research Methods

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Donald Reinhardt

Thin-Layer Chromatography, Drug Identifications

TLC, thin-layer chromatography, is a procedure of chemistry that can identify over 700 types of biochemicals, including significant medical drugs of legal importance. more...

Placebos, Effects, What They are, How They Work

The history of medicine is awash with drug trials and procedures that failed in well-controlled experiments. Controls are basic and essential for validation of science. more...

Column Chromatography for Molecular Separations

Biochemistry advances with its technology. The ability to discover compounds, and test and evaluate substances enables scientists to advance medicine and therapies. more...

Coffee Filter Chromatography of Plant Pigments

Plant leaves contain pigments important for photosynthesis and cell protection. Chromatography experiments with leaf extracts clearly reveal chlorophyll and carotenoids. more...

Paper Chromatography Basic Principles and Facts

Paper chromatography, even today, has useful application for scientific investigations, and it reveals how chemists can separate and identify specific chemical compounds. more...

Centrifuge, Ultracentrifuge Methods and Theory

Round and round they spin, those centrifuges, creating high g-forces as they work and - under the right conditions - molecules and organelles separate and layer within. more...

Fraunhofer Lines, the Sun, Elements and Universe

Understanding the sun, solar systems, and the universe is a constant and intense quest of astronomers. Spectroscopes and Fraunhofer's lines reveal the universal elements. more...

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Scientific Research Methods

Tickling in the Laboratory

By: Feature Writer Jeffrey Willett

Natural tickling cannot be duplicated in the laboratory. As a result, research on tickling has been limited by the experimental methods chosen. more...

Hypothesis Testing Explained Simply

By: Martin Bell

Hypothesis Testing is used to check whether there is or is not likely to be a difference between one or more data sets. It is the cornerstone of all statistical testing. more...

Persuasive Research Uses a Triangular Approach

By: Marc Latham

When you get a writing job that needs to be researched it is best to include more than one method of data analysis. This article provides an overview of good practice. more...

How DNA Sequencing Began

By: Kenneth Rosen

Techniques that allowed for the rapid determination of the order of the nucleotide bases in a molecule of DNA started a new era in scientific research. more...

Occam's Razor and Scientific Certainty

By: George Garza

The simpler the explanation the better. This theory is otherwise know as KISS. It is also the basis of Occam's razor. This is a theory about evidence and method. more...

How to Measure Osmolarity

By: Sarah Mikula

Harness the power of water pressure by learning to calculate molecular content. more...

How to Perform a t-Test in Matlab

By: Sarah Mikula

Matlab is one of the most popular, powerful statistical software programs available. Running a basic t-test in Matlab helps determine significance between groups. more...

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