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Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Global scenarios of organizations show investments wasted in projects with poor performances in more than 11 percent of cases, according to the Project Management Institute. This research aims to guide organizations in assertively investing in the right pertinent factors to improve project success rates and speed up project management maturity at a higher accuracy level using statistical predictions. Challenging existing drivers for project management maturity models and expanding their current practical view will be the result of a quantitative methodology based on a survey supported by data collection targeting the project management community in Brazil. The originality and value of this research are in contributing to the development of new project maturity models statistically supported by the increasing rate of maturity accuracy, which can be continually improved by confident data input into the model. The results show a high correlation between the performance measurement system and the project success rate associated with project management maturity. In addition, this research contemplates the relationship between organizational culture, business type, and project management office and project management maturity. [ABSTRACT FROM AUTHOR]

Guerra, MA Jr, Caldas, LA, Souza, HL, Tallis, J, Duncan, MJ, and Guimarães-Ferreira, L. The effects of physical fitness on postactivation potentiation in professional soccer athletes. J Strength Cond Res 36(6): 1643–1647, 2022—To investigate the relationship of the response to postactivation potentiation (PAP) with scores of physical fitness. Twenty-four professional male soccer players undertook tests of agility, muscular power, aerobic capacity, and body composition. Conditioning activities (CAs) were performed consisting of plyometrics exercises and sprints with sled towing. In the first and second sessions, body composition, agility, power, and aerobic capacity were assessed. At the third session, countermovement jumps (CMJ) were performed with 1, 3, and 5 minutes after the execution of the CA. Significant differences were found for CMJ height 1, 3, and 5 minutes after the CA compared with baseline values (3.58, 5.10, 5.48%, respectively). There was a significant positive correlation between the level of general physical fitness and PAP (CMJ height increase) 5 minutes after (r = 0.73). When the athletes were divided into groups with higher and lower physical fitness, the CA caused a significant increase in CMJ height in both groups, but a significant difference (p < 0.05) was observed at all times after PAP induction, with better performance in higher versus lower fitness level. The results suggest that plyometrics exercises associated with sled towing sprints as a CA result in an increase in CMJ performance in athletes and that physical fitness directly influences the PAP occurrence, with higher fit players demonstrating an enhanced PAP response. [ABSTRACT FROM AUTHOR]

The aim was to verify the efficiency of different glycerol concentrations (1%, 3%, and 5%) for cryopreservation of stallion semen. After semen collection, sperm cells were evaluated for motility and acrosin activity. The semen was divided into three equal parts and resuspended in freezing diluent without glycerol in a 1:1 proportion and were incubated for 20 minutes at room temperature. Immediately after centrifugation for 10 minutes at 600g and discarding the supernatant, each pellet was diluted with the same diluent and further centrifuged for 10 minutes. After the second centrifugation, each pellet received freezing glycerol-containing diluent under concentrations of 1%, 3%, and 5% and was loaded in 4mL macro-tubes. These macro-tubes were placed in liquid nitrogen vapor for 15 minutes for immediate immersion in liquid nitrogen and storage at -196°C. After thawing at 50°C for 40 seconds, semen samples were initially evaluated for sperm motility and acrosin activity. Moreover, semen was also incubated at 37ºC and evaluated for sperm motility after 60 and 120 minutes in a thermoresistance test (TRT). Immediately after thawing and during the TRT, both progressive and total sperm motility was lower in 1% glycerol (P0.05) between these two later concentrations. The acrosin activity in fresh semen was only greater (P0.05) between these later glycerol concentrations. In conclusion, based on sperm motility and acrosin activity, that 3% and 5% glycerol concentrations are suitable for stallion semen cryopreservation. [ABSTRACT FROM AUTHOR]

The addition of antioxidants to semen cryopreservation extenders has been employed for combating oxidative damage. This work aimed to evaluate the addition of carotenoid canthaxanthin to a cryopreservation extender of ram semen. Three breeder rams were used and, after semen collection, with 48-hour intervals between collection, the samples were included in the pool formation ( n = 6). The experimental groups comprised 0 (control), 0.1, 1, 10, and 25 μM of canthaxanthin. After thawing (37°C/30 s) and incubation at 37°C for 2 hours, semen aliquots from each group were evaluated for sperm kinetics (CASA), the integrity of the plasma and acrosomal membranes (iPAM), intracellular reactive oxygen species (ROS) production, and lipid peroxidation (LPO) by flow cytometry associated with the image. The control group and canthaxanthin 1 μM after incubation at 37°C for 2 hours showed increases of curvilinear velocity and amplitude of lateral head displacement with decreases of linearity, straightness, and wobble ( p < 0.05), which were not observed for the canthaxanthin 10 and 25 μM. The supplementation of a Tris-egg yolk extender with canthaxanthin had no effect on the iPAM, intracellular ROS production in viable spermatozoa, or LPO. In conclusion, supplementation with 10 and 25 μM of canthaxanthin in a Tris-egg yolk extender used for ram semen cryopreservation is able to protect ovine sperm from kinetic changes after incubation at 37°C for 2 hours post-thawing. [ABSTRACT FROM AUTHOR]

Beneficiation of manganese ores has been conducted around the world by circuits composed basically of crushing, screening and spiral classifier. Therefore, solely the coarse size fractions (and commonly the richest) are actually recovered: "lump" (-75+9mm) and "sinter feed" (-9+0.15mm). In the industrial plant which processes the ore from the Azul Mine-PA, the overflow of the spiral classifier (- 0.15mm) is disposed of in a tailings dam because it bears a low Mn content (<10%) and high kaolinite content (70%). This paper reports the findings of a process development conducted on laboratory scale with the aim of concentrating Mn-bearing minerals from the tailings of the Azul Mine-PA (7% of Mn and 70% of kaolinite). The process is composed of desliming (-10µm), followed by reverse cationic flotation of kaolinite (rougher, scavenger) at pH~5. Results indicate that the reverse cationic flotation in the acid medium, when utilizing amide amine as collector and in the presence of a silicate activator and a dispersing agent could be a possible route for the concentration of tailings that had previously been deslimed at 10µm. The results yielded a mass recovery of 18%, a metallurgical recovery of 50% and a 32% Mn concentrate which may be mixed with current high grade products, increasing the overall recovery of the plant. [ABSTRACT FROM AUTHOR]

The central idea of current article is to (re)establish a dialogue between poetry and philosophy, (re)connecting them with the existential human condition. It is important to listen to the poetry of the music Roda-viva by Chico Buarque de Holanda and, based on the thought of the Italian philosopher Giorgio Agamben, unveil the sense by which current politics has become biopolitics. At the same time, it reworks the thought that the work of art (in this case, the poetry) may emit opinion on our existential condition which is or perhaps has always been engaged in a constant dispute between the power over the life and power of life. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Direitos Fundamentais & Democracia is the property of Revista de Direitos Fundamentais & Democracia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article attempts a brief analysis of the Controversy of Valladolid, its relationship with the beginnings of human rights and the emergence of foucaultian biopower. Such controversy occurred in the city of Valladolid, Spain, in the years 1550 and 1551, from Fray Bartolome de Las Casas, prosecutor and defender of American Indians, and also advocate and protector of Human Rights, and the theologian and philosopher Juan Ginés de Sepúlveda for the benefit of the conquest of the Americas and the enslavement of the Indians of that region subjugated by Spain. This represents an important event in relation to human rights, because moving the primacy of the american revolution with its Declaration of Independence and the french revolution, the Declaration of the Rights of Men and Citizens, placing the sixteenth century, Spain and New World an as important landmarks. Finally, this shift relocates in a few centuries before the birth of foucaultian biopower and the biopolitics, which dates from the century XVII and mid-century XVIII, anticipating its contours in two centuries. [ABSTRACT FROM AUTHOR]