Physical Sciences and Engineering

According to ESRL / GMD FTP data (as of March 9, 2017), regularities in the dynamics of the seven greenhouse gases of Antarctica at the SPO station since March 1975 were revealed and binary relations between them were obtained. In dynamics, as an influencing variable, we obtained a rating of CH4, CO, H2, C14C13, CO2, CO2O18, and CO2C13. Rating as dependent indicators starts with CH4, H2, CO. Greenhouse gas CO2 has the highest linear correlation coefficient of 0.9970. Its wavelet with a one-year cycle has a correlation coefficient of 0.8407.

The main purpose of the study was to determine the genetic divergence among the ten corn genotypes cultivated in the 2017/2018 crop in the municipality of Santa Maria das Barreiras-PA. The work consisted basically of making an experiment with corn genotypes at different concentrations of potassium (high, low and general (low + high)). Both experiments were conducted in randomized blocks, with line spacing 0.9 meters, a total of three repetitions for each potassium concentration.

A pregnant woman's body changes throughout her pregnancy, as the fetus needs to grow and develop. Manual Lymphatic Drainage is the safest for this period, besides promoting pain relief, provides relaxation, mobilizes structures, reduces edema, prevents deformity and assists in activities of daily living, among others. The purpose of this paper is to identify the benefits of manual lymphatic drainage in pregnant women. This is a literature review study, including complete books and articles available online.

Objetivo: Bibliométricos gratuitos (BibExcel,Sitkis,CiteSpace, PublishorPerish, SCImago e VOS Viewer). A realização do estudo bibliométrico, a partir de uma base de dados, é fundamental para determinar o status de pesquisa de determinado tema, quanto à contribuição científica dos trabalhos realizados.

The problem of analyzing stationary temperature fields in the form of a parallelepiped is under consideration. Heat sources are located on the top of the parallelepiped. The path to the solution of the problem starts from the basic equa-tion of thermal conductivity which is mathematically described with the Laplace equation system.

The objective of this work was to evaluate economic indexes of maize under water and nitrogen (N) levels. The experiment was conducted in two seeding seasons (spring/summer and autumn/winter) in Rio Largo, Alagoas, Brazil, with 20 treatments and four repetitions. Maize was submitted to five irrigation levels (40, 80, 120, 160 and 200% of crop evapotranspiration - ETc) and four nitrogen fertilization rates (0, 75, 150, 225 kg ha-1 of N).

Pereskia Aculeata Miller, also known as Ora-Pro-Nóbis (OPN), is an underutilized species that belongs to the Cactaceae family. It is mainly distributed in the southern United States and Brazil, from Bahia to the Rio Grande do Sul state, growing in stony and sandy coastal plains. The aim of this study is to evaluate the effects of the use of OPN leaves on the metabolic parameters of Wistar rats.

Objective: The calculation of some physical constants requires different lab equipment and tools and time to conduct practical experiments and repeat them in accordance with the student's manual skills in dealing with different devices and tools. These experiments are financially expensive and presented with physical risks in addition to the time taken. Therefore, we can take advantage of the computer in dispensing with devices and tools and reduce the time taken to conduct experiments. There are many programs used in automated testing, most notably Matlab.

Bearings are considered among the most important elements of power transmission in machines. The main purpose of using bearings is to carry or support rotating shafts in machines to reduce friction and transmit the applied loads from the shafts to the housings. They are classified as either sliding or rolling bearings. Rolling bearings are more efficient, and therefore much more widely used in various engineering applications than other bearing types due to their lower friction, lower maintenance, and more indication signals before failure.

O presente estudo visou identificar se há distúrbios de sono em policiais militares e descrever quais os fatores que mais colaboram para esta condição. Para tal, foram entrevistados através do questionário de Pittsburgh 119 praças da 8ª Companhia Independente da Polícia Militar do Paraná – Brasil, entre soldados e subtenentes com idade média de 34 anos e tempo médio de corporação de 11 anos, sendo 103 homens e 16 mulheres.