Texas Journal of Engineering and Technology
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PHP is one of the main tools for creating a Web page in computer science lessons.
Get PDFThe article discusses the main characteristics and advantages of one of the most popular web programming languages PHP
Determination the groundwater effects on corrosion in Nano composite material Silicon- Carbide reinforced aluminum alloys in Baghdad Iraq.
Get PDFThis article presents the results of a study to determine the effects of groundwater on the mechanical properties of an aluminum alloy. The corrosion was evaluated on this aluminum alloy that was subjected to an aqueous solution attack from a four-point extractor at a depth of (4-4.5) meter in an area west of Baghdad. The results indicated that the addition of silicon carbide nanoparticles improved the properties. The mechanical strength of the base alloy, especially at a ratio 2.0 wt.%, significantly reduced the rate of pittin
Selection of Compronents for Tracking Systems of A Solar Plant
Get PDFThe article presents a methodology for selecting electrical and mechanical components of solar installation tracking systems to improve the overall efficiency of a solar installation
The role of chemical and mineral supplements in the development of highly durable concrete structures
Get PDFModern construction practice involves the widespread use of chemical additives in concrete. As a chemical additive, there is not a kind of effective, universal and easy-to-use tool for radically changing the properties of concrete mixture and concrete
Properties of Polymer Materials and Coatings
Get PDFThe classification of composite materials is based on several criteria of material science. These are origin, function, type of matrix material, nature of elements (components), size of phase inclusions, signs of structure, methods of production. We will consider them one by one
Activity, patterns, and localization of carbonic acid enzymes in algae used in wastewater treatment.
Get PDFThis article presents the results on the presence, activity, localization, properties and functional role of the carbonic anhydrase enzyme involved in the carbon metabolism of microalgae - euglena (which has a specific nutritional feature similar to heterotrophic and protozoa) Chlamydomonas and Dunaliella grown in intensive and mass culture, depending on the activity of various forms of carbonic anhydrase on the concentration of CO2 and nitrogen in the gas phase and medium. As analyzes have shown, all studied species and strains of algae have carbonic anhydrase activity, depending on the type of strain and cultivation conditions, 0,10-3,60 per mg of dry matter or 12-416 per chlorophyll unit. The lowest activity of the carbonic anhydrase enzyme was observed in the Dunalilla minute algae grown in an open-air semiproduction facility. In laboratory conditions grown in glass vessels, the minimum enzyme activity is observed in Chlamydomonas Reinhardii UA-5-16. The study of the localization of carbonic anhydrase in various cellular fractions of algae showed that in Dunaliella and Chlamydomonadal algae. The enzyme activity is mainly localized in the soluble fraction and gives similar values for both the homogeneous and the fraction of soluble proteins. In eugelena algae, a certain part (up to 40%) of carbonic anhydrase activity is localized in the membrane-bound fractio
Digital Transformation Based on Technological Innovations
Get PDFThe application of technological digital platform in the creation of design development, the most important factors of an innovative economy, is considered. It is shown that the digital platform is the basis for designing the main links of the technological chain. The concept of the ecosystem and the object of the innovation structure is give
Development of information competence of future informatics teachers as a pedagogical problem
Get PDFthis article presents scientific information based on the introduction of innovations in the educational system in the issues of solving the pedagogical problem of the development of information competence of future Informatics teachers
Constructing the Minimum Coverage of the I Graph
Get PDFDescribes the structural methods of testing programs such as branch testing, program verification, symbolic testing and the generation of structural tests. An algorithm for the minimum coverage of the program graph based on a packaged adjacency matrix and a specific example of the minimum coverage of the program graph are introduce
Electronic Digital Signature Protocol of an Asymmetric Encryption Algorithm Based on the Complexity of Performing Actions About Elliptic Curve Points and Multiplication of Matrices with a Parameter on a Final Field
Get PDFIn article the report of the electronic digital signature on the basis of asymmetric algorithm of the enciphering based on complexity of performance of operation of addition of points with rational coordinates of an elliptic curve on a final field at which, in process formation of the digital signature possibility a choice of any number from the signed is provided is develope