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Amwoga Khalwale PAN( Personal Area Network) PAN stands for Personal Area Network. It is sometimes referred to as Wireless personal Area Network (WPAN). It’s a network covering a very small area, typically a small room. It enables computer devices to communicate with other nearby computers and exchange information and data. Devices in one PAN network can establish … Read more
Transpiration is the process in which plants lose water in the form of moisture or water vapor. Parts of plant like stem, small pores on leaves and flowers evaporate the water to the atmosphere. 90% of the transpiration occurs through foliar surface or surface of leaves. Types of transpiration include: stomatal, lenticular and cuticular transpiration. … Read more
What Are Lenticels? Lenticels are one of the many raised pores in the stem of a woody plant that allows gas exchange between the atmosphere and the internal tissues. Usually, lenticels consist of large intercellular spaces in the periderm, especially in secondarily thickened organs and the bark of woody stems and roots of dicotyledonous flowering … Read more
Batch Fermentation (Batch Culture) Batch fermentation is the simplest mode of fermentation; it is made up of a mechanically stirred vessel with other accessories such as a gas sparger and a heating/cooling jacket. It is also widely used in biological industry, including microbial fermentation, cell metabolism and production of products. In batch fermentation, substrate and … Read more
An image function f(x,y) must be digitized both spatially and in amplitude in order to become suitable for digital processing. Typically, a frame grabber or digitizer is used to sample and quantize the analogue video signal. Therefore, in order to create an image which is digital, we need to convert continuous data into digital form. … Read more
Heartwood and Sapwood are terms used to describe the two primary categories that depict the naturally occurring wood of a tree. HEARTWOOD Heartwood also referred to as Duramen, is the older, harder nonliving central wood of trees that is usually darker, denser, less permeable and more durable than the surrounding sapwood. Heartwood is mechanically strong … Read more
Virtual Memory Virtual memory is a memory management capability of an operating system (OS) that uses hardware and software to allow a computer to compensate for physical memory shortages by temporarily transferring data from random access memory (RAM) to disk storage. In other words, it is the separation of logical memory from physical memory. This … Read more
Gram Negative Bacteria & Gram Positive Bacteria The “gram-positive” and “gram negative” are terms used by microbiologists to classify bacteria. The classification is based on the bacterium’s chemical and physical cell wall properties. For proper determination as to weather a bacteria is gram-positive or gram-negative, microbiologist usually performs a special type of staining technique referred … Read more
Bluetooth is a wireless connection standard that allows for exchange of data over short distances. It’s named after the 10th century Danish King Harald Bluetooth, who united Denmark’s tribes into a single kingdom. A new version of Bluetooth standard means various improvements, but only when used with compatible peripherals. Before Bluetooth version 4.2 in 2014, … Read more
The polarity of the electric current created by the welding machine, which runs through the electrode, is either AC or DC. These are the two types of polarity and the welding quality and efficiency depend significantly on the type of current used. AC Welding AC stands for Alternating Current. In an AC electric circuit, the … Read more