Physical Sciences and Engineering

As is known, the Riemann-Liouville fractional integration operator establishes an isomorphism between Hölder spaces for functions one variables. We study mixed Riemann-Liouville fractional integration operats and mixed fractional derivative in Marchaud form of function of two variables in Hölder spaces of different orders in each variables. The obtained results extend the well known theorem of Hardy-Littlewood for one-dimensuianl fractional integrals to the case of mixed Hölderness.

The computerized modeling of the 9α-iodine derivative of cortisol has provided structural information on bond lengths and bond angles for the title compound. It was shown that the C-C, C=C and C=O bonds practically coincide with those of dexametasone, chlorocortisol and bromocortisol. The basic difference consists in the lengths of the C-Hal bonds, which are in linear relationship with halogens ionic radii.

Objective: The objective of the study was to evaluate the effects of the incidence of gamma radiation of Cobalt-60 on caffeine. Material and Methods: The samples were studied in aqueous solution and powdered form after irradiation at doses: 2, 4, 8, 16 and 32 kGy by ionizing radiation source of 60Co. Afterwards, they were analyzed by differential scanning calorimetry (DSC), thermogravimetry (TG), and high performance liquid chromatography (HPLC).

People Management has assumed a greater role as a competitive differential in the structures of organizations trying to create a management that has its employees as the main actor. A bibliographic review was carried out based on the publications on policies and practices of people management. The survey and bibliographical analysis was carried out through the search tool of the Brazilian Portal of Periodicals of CAPES - Coordination of Improvement of Higher Education Personnel.

Nowadays it is relevant to improve the thermal-energy performance in housing envelopes and heating water systems, assuming or not an acceptable increase in costs. This issue is due to the growth of electricity demand expected in the residential sector for the next two decades. The objective of this research was to develop a multicriteria decision tool to assist in decision making about housing envelope solutions and heating water system during the initial stages of the building venture.

The goal of this study is to understand how the Design Thinking tool helps the identification of opportunities, creation and development of new products or services developed by academics. Therefore, the stages of identification, inspiration, ideation and implementation of the development of products and services were studied through observation, interviews and questionnaires applied to the teams of academics who developed a product as a curricular activity to be presented at the Entrepreneur Fair, which happens every year.

This study aims todesign and developa Collapsible Four Valve Spring Compressorand assess its functionality in terms ofdesign, construction and operating performance. The study employed a descriptive - development design, weighted mean as the statistical tool, questionnaire and actual observation to gather data. Based on the findings of the assessment, the researcher concluded that the Collapsible Four Valve Spring Compressorishighly functional in terms of design, construction and operating performance.

The developed electronic biomedical dynamometer was able to measure palmar grip strengths and varying forces over time produced by grip forces ranging from 5 N to 1000 N. This dynamometer has a very affordable mechanical structure, compact signal conditioning circuit and microcomputer. The mechanical structure consists of a dynamic support developed in Metalon and a static support also developed in Metalon.

The scientific knowledge is subjected to a process of production whose dynamics involves transformations in the understanding of the treatment of nature, which impedes from being characterized as ready, true and finished. Moreover, this is a challenge in the field of scientific education. In this sense, it is one of the functions of Science teaching to enable the student to appropriate the structure of scientific knowledge and its explanatory and transformative potential.

This paper presents the development of a pressurized ejector for particulate material handling by means of pneumatic transport, defined as a way to transport materials mainly in powder or granular form using a gas stream. Operating through high-pressure batches, the proposed equipment consists in an alternative to the conventional Pressure Vessel commonly used in pneumatic transport, having as advantages the reduction in complexity of operation; equipment dimensions; energy expenditure and production cost.