Three experiments were done with different particle sizes of corn feed on its zootechnical performance, passing rate and apparent digestibility of juvenile tambaqui (Colossoma macropomum). In the first, 200 juveniles were used and distributed in 20 tanks (220 L), 10 fish per unit (four replicates). The experimental system used to record passage time was composed of five incubators with 200 L. In the second, 75 juveniles were used per 55 days (three replications). In the third, 75 juveniles were used and distributed in five incubators of 200 L. All experiments were performed randomly. Different linear behavior treatments were observed for apparent digestibility of crude protein; and the smaller particle size (150 μm) had better results digestibility. smaller particle size of the corn had better results, affected the growth performance of tambaqui and the apparent digestibility of crude protein and ether extract. Thus, is recommended that a particle size of 150 μm of corn be used for tambaqui.The ability of pathogenic bacteria acquire resistance to the existing antibiotics has long been considered a dangerous health risk threat. Currently, the use of visible light has been considered a new approach to treat bacterial infections as an alternative to antibiotics. Herein, we investigated the antimicrobial effect of two range of visible light, blue and red, on Staphylococcus aureus and Pseudomonas aeruginosa, two pathogenic bacterial commonly found in healthcare settings-acquired infections and responsible for high rate of morbidity and mortality. Bacterial cultures were exposed to blue or red light (470 nm and 660 nm) provided by light-emitting diodes - LED. The fluencies and irradiance used for blue and red light were 284.90 J/cm2, 13.19 mW/cm2 and 603.44 J/cm2, 27.93 mW/cm2 respectively. Different experimental approaches were used to determine the optimal conditions of light application. Only exposure to blue light for 6 hours was able to inhibit about 75% in vitro growth of both bacterial species after 24 hours. The surviving exposed bacteria formed colonies significantly smaller than controls, however, these bacteria were able to resume growth after 48 hours. Blue light was able to inhibit bacterial growth upon inoculation in both saline solution and BHI culture medium. We can conclude that blue light, but not red light, is capable of temporarily retarding the growth of gram negative and gram positive bacteria.This article examines President Donald Trump's handling of the covid-19 pandemic in the United States.This article compares the scenarios generated in the Spanish flu pandemic of 1918-1919 and covid-19 in Argentina. It analyzes governmental policies and structural imbalances in the earlier pandemic based on case studies of the city of Buenos Aires and the province of Salta. It then studies those same topics for the covid-19 pandemic. It describes national policies and analyzes the province of Jujuy, where the health care system was overwhelmed. ZYS-1 cell line It concludes that in order to manage the pandemic it is necessary to create consensus policies to solve the structural imbalanaces in the country.The appearance of the first coronavirus cases in Argentina led to debate about features of the health care system and ways of accessing its services and benefits. This article reviews the moments when changes were made during the process of acquiring health care rights in the twentieth and twenty-first centuries. The process has been a complex and fraught one.This article aims to provide researchers and students with information on digital archives in libraries in Latin America and elsewhere. It is aimed at those interested in health history, focusing on Peru and Chile.This work focuses on the scientific research conducted by women at Portugal's Institute of Tropical Medicine between 1943 and 1966. The Institute's scientific journal documents the participation of women in tropical medicine during this period. Their publications addressed a variety of subjects and resulted from research carried out in the metropolis as well as Portugal's overseas colonies. Most of the articles written by these women were are co-authored by their male colleagues, reflecting the incorporation of female researchers into scientific networks already established by men. This work in progress provides a starting point to lend visibility to a group of scientific actors who are practically absent from the historiography of tropical medicine."Emerging and reemerging infectious diseases" pose a growing threat to the hegemony of biomedicine, raising questions about whether its discourse and practices can handle the global challenge they represent. The construction of this new nosological category is analyzed in this article, which examines some notable examples of the impact of (re)emerging diseases on public health, food security and human development on a global scale. It discusses irresponsible practices by sectors of the pharmaceutical and agricultural industries which led to the emergence and spread of these diseases; and points to some crucial failures of approach and time management in global health policies on HIV/AIDS, with disastrous consequences for sub-Saharan Africa.This paper argues that many of the foundations and trends that led to the rise in obesity and other diet-related health problems in Latin America began to develop in the late nineteenth century. The tendency towards presentism in the nutrition transition literature provides a much abbreviated and limited history of changes in diet and weight. Whereas medical and nutrition researchers have tended to emphasize the recent onset of the crisis, a historical perspective suggests that increasingly global food sourcing prompted changes in foodways and a gradual "fattening" of Latin America. This paper also provides a methodological and historiographic exploration of how to historicize the nutrition transition, drawing on a diverse array of sources from pre-1980 to the present.This work is part of a larger survey on how Roberto Freire's somatherapy emerged and developed from the counterculture of the 1970s, addressing the creation and initial development of somatherapy, starting from what is understood to be a "creation myth," an orderly and coherent narrative explaining the emergence of this therapy that is frequently repeated with few changes. Later narratives referring to the process of naming somatherapy are also examined, revealing inconsistencies and conflicts in the data that indicate the complexity of these processes and the authors' efforts to add order and legitimacy to this therapeutic technique.