The two most popular thread styles in the world are British Standard Pipe Tapered (BSPT) and National Pipe Thread (NPT). For those who do not know what pipe threads are, they are designed to provide connections for the transfer of fluids, gases, steam, or hydraulic fluid. Both BSPT and NPT threads are tapered, which aids in sealing. Process industries use different kinds of sealing for pressure systems depending on the geographical region, size of the pressure system, and the environment.

There are many software available that are used to handle management of changes to computer files including documents and programs, or mainly source codes to make sure the system runs smoothly and efficiently. This system which keeps tabs on the changes to a file or multiple files is called “version control”. Without a proper version control system developing software becomes quite risky. It is simply a component of software configuration management that helps you track changes you make in your source code over time.

A Compact Disc Recordable (CD-R) is a Write Once Read Multiple (WORM) disc. These discs can only record data once and then the data becomes permanent on the disc. ... A Compact Disc Re-Writable (CD-RW) is an erasable disc that can be reused. The data on a CD-RW disc can be erased and recorded over numerous times. What is CDR and CDRW?Summary: Difference Between CDR and CDRW is that a CD-R (compact disc-recordable) is a multisession optical disc on which users can write, but not erase, their own items such as text, graphics, and audio.

Freedom vs Liberty   Difference between freedom and liberty is a puzzling topic as there are several interpretations of the difference between the two words. Consequently, freedom and liberty have become two words that are often confused when it comes to their meanings and connotations. However, there is some difference between the two words, which is a little difficult to understand. The word freedom is generally used in the sense of ‘independence’.

The key difference between simple and complex lipids is that simple lipids are esters of fatty acids with alcohols and do not carry other molecules while complex lipids are fatty acids with alcohols and other molecules such as phosphates, nitrogenous base, etc. Lipids are one of the organic molecules present in living organisms. They are insoluble in water but soluble in ether, alcohol, and chloroform. Furthermore, lipid molecule constitutes of a fatty acid chain and a glycerol molecule.

The key difference between Greek and Roman education is that Greek education involved the precise study of mathematics and science while Roman education did not. Roman education was based on Greek education. Both these systems focused only on educating boys from rich and elite families. The poor boys were left to find jobs while girls were taught to read, write at home, were trained in household chores, and be good wives.

The key difference between symmetric and asymmetric top molecules is that symmetric top molecules have one proper rotation axis and two moments of inertia that are equal to each other whereas asymmetric top molecules have all the principal components of the moment of inertia different from each other.   The term symmetric and asymmetric top molecules come under the classification of polyatomic molecules on the basis of the shape of the momental ellipsoid and the pure rotation spectra.

Alveoli vs Nephron Both the alveoli and the nephron are vital function areas of the human body. The main difference is that the alveoli are the main functional units of the lungs while the nephron is the main unit of the kidney. The Alveoli are that air sacs where carbon dioxide and oxygen are exchanged and transported. Inside the unit of the alveoli, you can find tissues that create the hormones, enzymes and other pulmonary surfactant.

LLC vs. Corporation For those who want to start a business, they first need to know some important theories behind starting, sustaining, and making their businesses prosper for the longest time possible. To achieve this, they must apply certain principles that will help them maximize their overall profits, and balance costs versus expenditures. Analyzing these aspects will help to make the business grow, and become a big company in the future, or even a giant corporation.

There are numerous video as well as audio file formats to store digital video data on a computer system or other devices such as hard disk, smartphone, and so on. Speaking of, video and audio digital recording are contemporary as it is seen far and near. In the abstract, it is typically an encoded numerical, which is decoded by the system, in a way to convey to users the best video audio quality.