COVID-19 Living Overview of Evidence repository is highly comprehensive and can be used as a single source for COVID-19 studies.

BACKGROUND AND OBJECTIVE: The coronavirus disease 2019 Living OVerview of Evidence (COVID-19 L·OVE) is a public repository and classification platform for COVID-19 articles. The repository contains more than 430,000 articles as of September 20, 2021 and intends to provide a one-stop shop for COVID-19 evidence. Considering that systematic reviews conduct high-quality searches, this study assesses the comprehensiveness and currency of the repository against the total number of studies in a representative sample of COVID-19 systematic reviews. METHODS: Our sample was generated from all the studies included in the systematic reviews of COVID-19 published during April 2021. We estimated the comprehensiveness of COVID-19 L·OVE repository by determining how many of the individual studies in the sample were included in the COVID-19 L·OVE repository. We estimated the currency as the percentage of studies that was available in the COVID-19 L·OVE repository at the time the systematic reviews conducted their own search. RESULTS: We identified 83 eligible systematic reviews that included 2,132 studies. COVID-19 L·OVE had an overall comprehensiveness of 99.67% (2,125/2,132). The overall currency of the repository, that is, the proportion of articles that would have been obtained if the search of the reviews was conducted in COVID-19 L·OVE instead of searching the original sources, was 96.48% (2,057/2,132). Both the comprehensiveness and the currency were 100% for randomized trials (82/82). CONCLUSION: The COVID-19 L·OVE repository is highly comprehensive and current. Using this repository instead of traditional manual searches in multiple databases can save a great amount of work to people conducting systematic reviews and would improve the comprehensiveness and timeliness of evidence syntheses. This tool is particularly important for supporting living evidence synthesis processes.

Systematic Review and Study of S Curves for Biomass Quantification in Solid-state Fermentation (SSF) and Digital Image Processing (DIP) Applied to Biomass Measurement in Food Processes.

BACKGROUND: There are several methods for the quantification of biomass in SSF, such as glucosamine measurement, ergosterol content, protein concentration, change in dry weight or evolution of CO2 production. However, all have drawbacks when obtaining accurate data on the progress of the SSF due to the dispersion in cell growth on the solid substrate, and the difficulty encountered in separating the biomass. Studying the disadvantages associated with the process of biomass quantification in SSF, the monitoring of the growth of biomass by a technique known as digital image processing (DIP), consists of obtaining information on the production of different compounds during fermentation, using colorimetric methods based on the pixels that are obtained from photographs. OBJECTIVE: The purpose of this study was to know about the state of the technology and the advantages of DIP. METHODS: The methodology employed four phases; the first describes the search equations for the SSF and the DIP. A search for patents related to SSF and DIP carried out in the Free Patents Online and Patent inspiration databases. Then there is the selection of the most relevant articles in each of the technologies. As a third step, modifications for obtaining the best adjustments were also carried out. Finally, the analysis of the results was done and the inflection years were determined by means of six mathematical models widely studied. RESULTS: For these models, the inflection years were 2018 and 2019 for both the SSF and the DIP. Additionally, the main methods for the measurement of biomass in SSF were found, and are also indicated in the review, as DIP measurement processes have already been carried out using the same technology. CONCLUSION: In addition, the DIP has shown satisfactory results and could be an interesting alternative for biomass measurement in SSF, due to its ease and versatility.

Utilização da conformação, do comprimento da carcaça e da perna como estimadores do peso dos cortes do serrote em novilhos holandês

Sixteen carcasses of Holstein steers raised in feed lot from six to twenty four months, where used to test measurements of the carcass, trought simple linear regression equation, as predictors of hinquarter cuts weight. The independent variables were conformation, carcass length, leg length while the dependent variables were weight of hindquarter cuts. From the results obtained, one may conclude that conformation was a good predictor only for eye round; the carcass length was a good predictor for knuckie, stripling and eye round; leg length only estimated rump cover weight.

Foram utilizadas 16 carcaças de novilhos Holandês, criados em confinamento, dos 6 aos 24 meses de idade, com o objetivo de testar medidas realizadas na carcaça como estimadores do peso dos cortes do serrote. Utilizaram-se equações de regressão linear simples. As variáveis independentes foram: conformação, comprimento da carcaça e comprimento da perna e as dependentes foram: o peso dos cortes do serrote. Os resultados obtidos mostraram que a conformação, estimou com precisão o peso do tatu. O comprimento de carcaça mostrou ser bom estimador do patinho, do contrafilé e do tatu. O comprimento de perna, foi responsável apenas pela estimativa do peso da picanha. Os resultados permitem concluir que a conformação, o comprimento da carcaça e da perna, isoladamente, não devem ser utilizados para estimar o peso dos cortes do serrote.

Utilização da conformação, do comprimento da carcaça e da perna como estimadores do peso dos cortes do serrote em novilhos holandês

Sixteen carcasses of Holstein steers raised in feed lot from six to twenty four months, where used to test measurements of the carcass, trought simple linear regression equation, as predictors of hinquarter cuts weight. The independent variables were conformation, carcass length, leg length while the dependent variables were weight of hindquarter cuts. From the results obtained, one may conclude that conformation was a good predictor only for eye round; the carcass length was a good predictor for knuckie, stripling and eye round; leg length only estimated rump cover weight.

Foram utilizadas 16 carcaças de novilhos Holandês, criados em confinamento, dos 6 aos 24 meses de idade, com o objetivo de testar medidas realizadas na carcaça como estimadores do peso dos cortes do serrote. Utilizaram-se equações de regressão linear simples. As variáveis independentes foram: conformação, comprimento da carcaça e comprimento da perna e as dependentes foram: o peso dos cortes do serrote. Os resultados obtidos mostraram que a conformação, estimou com precisão o peso do tatu. O comprimento de carcaça mostrou ser bom estimador do patinho, do contrafilé e do tatu. O comprimento de perna, foi responsável apenas pela estimativa do peso da picanha. Os resultados permitem concluir que a conformação, o comprimento da carcaça e da perna, isoladamente, não devem ser utilizados para estimar o peso dos cortes do serrote.