The purpose of this research project was to review the cross-linking techniques used to produce polyethylene pipes for domestic as well as other commercial applications. No matter how remarkable the properties of a plastic may be, it is the effectiveness of its applications that would make the plastic successful or unsuccessful, in the case of polyethylene it would be success. Polyethylene was first used in telephone cable insulation, however after its huge success it was then used in a wide...
This study analyses the effect of ultrasonic pre-irradiation treatment upon aqueous enzymatic extraction of essential oil from lemongrass, Cymbopogon citratus by comparing different irradiation time (0min, 5min, 10min, 15min), extraction process time (4hr, 6hr, 8hr) and conventional extraction method (steam distillation and hydrodistillation). Pectinase Ultra SP-L, a commercial enzyme were used in the aqueous enzymatic extraction of lemongrass essential oil. The essential oils extracted were...
Gluten triggers a t-cell mediated immune response from the body. T cells stands for Thymus- dependent because these cells are produced from stem cells in the thymus and then are stored in the thymus, spleen and lymph nodes, from which they are then sent out to other organs. T cells have receptors sensitive to antigens, related to immunoglobulins (antibody proteins), on the surface of specific other cells, and must come into close contact with the afflicted cell. B cells, which are made in...
Background: Idiopathic pulmonary arterial hypertension (IPAH) is a poorly understood debilitating disorder. There is a need for early diagnostic biomarkers to improve its poor prognosis. With proteomic techniques, profiling of the human plasma proteome become possible in searching for novel biomarkers. Methods: From a previous study, label free liquid chromatography tandem mass spectrometry (LC-MS/MS) was used to compare the plasma samples from eight IPAH patients and eight healthy controls....
Introduction Amphibians are members of the class Amphibia, subphylum Vertebrata, phylum Chordata. The class Amphibia includes frogs, toads, salamanders, newts and caecilians. Amphibians are characterized by a glandular skin without external scales, by gills during development (and in adulthood in some), and by eggs that may have jelly coats but develop without formation of extraembryonic membranes such as the amnion. Most amphibians also have four limbs. Limbs and lungs are adaptations for life...
In recent times next generation sequencing has been deployed to not only sequence genomes, but also to study gene expression and sequence transcriptomes. In global gene expression studies where microarrays have been previously been the main tools this new sequence technology now offers new opportunities. One approach is to create tag-sequence libraries that is created by using mRNA and combination of restriction enzymes and gives libraries where the same tag (20-21bp long) is sequenced in...
Waves are of many kinds, such as water, sound, light waves etc. But in 1873, Maxwell derived a wave form having electric and magnetic field components, revealing the wave-like nature of electric and magnetic fields. These two components had same wavelength, frequency, speed but differ in about 90 degree, in planes in which they travel. According to Maxwell, an oscillating electric field generates an oscillating magnetic field which in turn generates an oscillating electric field, and so on...
Myofibres are basic units of skeletal muscles. They are formed of large multinucleate muscle stem cells. There are two kinds of myofibres, fast and slow contracting. The determination of different kinds depend upon the myosin heavy chains isoforms they express.MyHC content within an individual differs because myosin are encoded by different nuclei and maintained in nuclear domain. [14]Fig 1. Differentiating capacity and typology of skeletal muscle stem cellsNew muscle fibres are produced after...
One of the most dangerous viruses still around today is the Dengue virus. It was first identified in the late 1700s, and has survived to this day to continue to infect millions of people around the world. The Dengue virus is a member of the Flaviviridae family, and there are four serotypes of the virus. It is spread when an Aedes aegypti mosquito vector bites a human host, thus transmitting the Dengue virus that they are carrying. The female mosquitoes lay their eggs on the side of...
ABSTRACT: The analysis of Heart sounds and Heart Murmurs plays important role in the diagnosis of Heart Diseases. This paper deals with The Design of a Laser based Tele-diagnosing system and its Signal processing module. There are two main sections in this paper. The First part deals with the signal acquisition using Electronic Stethoscope. The heart Sounds are first acquired using an electronic stethoscope which has the capability of transferring these signals to the near by workstation using...