A new variant of Brucella melitensis

ABSTRACTBrucella melitensis is highly pathogenic and constitutes a serious risk to public health. In Argentina, biovar 1 has been isolated from infected animals, but the Rev.1 strain vaccine is not authorised for use. This report describes nine atypical B. melitensis isolates obtained from humans. These isolates grew slowly, produced small colonies and were susceptible to penicillin and dyes, similar to the B. melitensis Rev.1 vaccine strain, but were inhibited by streptomycin 2.5 mg/L. The isolation of such atypical B. melitensis variants has never been reported from animals in Argentina, and could indicate the emergence of a new mutant variant

Pensamento, Teoria e Estudos Latino-americanos

RESUMOO presente trabalho configura como artigo inicial do Dossiê Especial ”“ Pensamento, Teoria e Estudos Latino-americanos, organizado conjuntamente por nós, a pedido da Revista de Estudos e Pesquisas sobre as Américas (CEPPAC), do Instituto de Ciências Sociais (ICS), da Universidade de Brasília (UnB). De forma breve, este artigo apresenta a importância alcançada pelo Pensamento, pela Teoria, e, sobre tudo, pelos Estudos Latino-americanos nas últimas décadas. Em seguida, o artigo apresenta os quatorze trabalhos e uma resenha que compõem este Dossiê, resultado da contribuição de diferentes pesquisadores de distintas localidades da região, organizados em três blocos: Ciências Sociais Latino-americanas, Pensamento e Estudos.PALAVRAS CHAVE: Ciências Sociais Latino-americanas; Pensamento Latino-americanos; Teoria Latino-americana; Estudos Latino-americanos.---RESUMENEl presente trabajo configura como articulo inicial del Dossier Especial ”“ Pensamiento Teoría y Estudios Latinoamericanos, organizado conjuntamente por nosotros, a pedido de la Revista de Estudos e Pesquisas sobre as Américas (CEPPAC), del Instituto de Ciências Sociais (ICS), de la Universidade de Brasília (UnB). De forma breve, este articulo presenta la importancia alcanzada por el Pensamiento, por la Teoría, y, sobre todo, por los Estudios Latinoamericanos en las últimas décadas. En seguida, el articulo presenta los catorce trabajos e una reseña que componen este Dossier, resultado de la contribución de diferentes investigadores de distintas localidades de la región, organizados en tres bloques: Ciencias Sociales Latinoamericanas, Pensamiento y Estudios.PALABRAS CLAVE: Ciencias Sociales Latinoamericanas; Pensamiento Latinoamericano; Teoría Latinoamericana; Estudios Latinoamericanos.---ABSTRACTThis paper is set up as the initial article of this Special Dossier - Thought, Theory and Latin American Studies, which we organized collectively, at the request of the Journal of Study and Research on the Americas (CEPPAC), the Institute of Social Sciences (ICS), and of the University of Brasilia (UnB). In brief, this article presents the significance achieved by the Thought, the Theory, and, above all, by Latin American Studies in recent decades. Next, the paper presents the fourteen articles and the review that constitute this dossier, which results from the contribution of researchers from different locations of the region. The dossier was arranged into three sections: Latin American Social Sciences, Thought and Studies.KEYWORDS: Latin American Social Sciences; Latin American Thinking; Latin American theory;  Latin American Studies

Evaluation of Treatments to Reduce Hardness of Agave americana Core

Biljka Agave americana sadrži inulin kao rezervu ugljikohidrata, stoga je zanimljiva za ekstrakciju inulina prešanjem. Prinos je procesa malen zbog velike tvrdoće srčike. Cilj je ovoga rada procjena prethodne obrade radi smanjenja tvrdoće pri prešanju biljke. Ispitana je i optimirana obrada biljke vodom, s 1 % masenog udjela sumporne kiseline ili 1 % masenog udjela natrijeve lužine. Prethodna obrada srčike A. americana s 1 % sumporne kiseline smanjila je tvrdoću s 30000 g na 2000 g (sile kidanja). Dobiveni matematički model predviđa optimalnu obradu pri 84 °C tijekom 75 min. Obrada s 1 % sumporne kiseline omogućava dobivanje bijele srčike A. americana, dok se ostalim načinima obrade dobiva srčika žute boje. Ti rezultati omogućuju dobru alternativu za dobivanje proizvoda dodatne vrijednosti.Agave americana contains inulin as storage carbohydrate. Therefore, agave is interesting to be used for the extraction of inulin by pressing. The yield of the process is low due to the high hardness of the core. The objective of this work was to evaluate pretreatments to reduce the hardness in the process of obtaining inulin by pressing. Treatments with water, sulphuric acid 1 % (by mass) or sodium hydroxide 1 % (by mass) were tested and optimized. The pretreatment of the core of A. americana with sulphuric acid 1 % allowed the reduction of hardness from 30 000 g to 2000 g of breaking force. The mathematical model obtained predicts an optimum processing at 84 °C during 75 min. The treatment with sulphuric acid 1 % also allows white core of A. americana to be obtained, while the other treatments provide yellow core. These results open a good alternative to obtain value added products from this resource

Evaluation of Treatments to Reduce Hardness of Agave americana Core

Biljka Agave americana sadrži inulin kao rezervu ugljikohidrata, stoga je zanimljiva za ekstrakciju inulina prešanjem. Prinos je procesa malen zbog velike tvrdoće srčike. Cilj je ovoga rada procjena prethodne obrade radi smanjenja tvrdoće pri prešanju biljke. Ispitana je i optimirana obrada biljke vodom, s 1 % masenog udjela sumporne kiseline ili 1 % masenog udjela natrijeve lužine. Prethodna obrada srčike A. americana s 1 % sumporne kiseline smanjila je tvrdoću s 30000 g na 2000 g (sile kidanja). Dobiveni matematički model predviđa optimalnu obradu pri 84 °C tijekom 75 min. Obrada s 1 % sumporne kiseline omogućava dobivanje bijele srčike A. americana, dok se ostalim načinima obrade dobiva srčika žute boje. Ti rezultati omogućuju dobru alternativu za dobivanje proizvoda dodatne vrijednosti.Agave americana contains inulin as storage carbohydrate. Therefore, agave is interesting to be used for the extraction of inulin by pressing. The yield of the process is low due to the high hardness of the core. The objective of this work was to evaluate pretreatments to reduce the hardness in the process of obtaining inulin by pressing. Treatments with water, sulphuric acid 1 % (by mass) or sodium hydroxide 1 % (by mass) were tested and optimized. The pretreatment of the core of A. americana with sulphuric acid 1 % allowed the reduction of hardness from 30 000 g to 2000 g of breaking force. The mathematical model obtained predicts an optimum processing at 84 °C during 75 min. The treatment with sulphuric acid 1 % also allows white core of A. americana to be obtained, while the other treatments provide yellow core. These results open a good alternative to obtain value added products from this resource

Educational Web Tool for Digital Image Processing

En este trabajo se propuso un modelo de una herramienta que ayuda al aprendizaje en el área de procesamiento digital de imágenes dirigido a los alumnos de grado y postgrado de la Facultad Politécnica. Además, se llevó a cabo la implementación de la primera fase de la herramienta.CONACYT – Consejo Nacional de Ciencia y TecnologíaPROCIENCI

Dataset from fundus images for the study of diabetic retinopathy.

This article presents a database containing 757 color fun dus images acquired at the Department of Ophthalmology of the Hospital de Clínicas, Facultad de Ciencias Médicas (FCM), Universidad Nacional de Asunción (UNA), Paraguay. Firstly, the retinal images were acquired with a clinical procedure presented in this paper. The acquisition of the retinographies was made through the Visucam 500 camera of the Zeiss brand. Next, two expert ophthalmologists have classified the dataset. These data can help physicians and researchers in the detection of cases of Non-Proliferative Diabetic Retinopa thy (NPDR) and Proliferative Diabetic Retinopathy (PDR), in their different stages. The dataset generated will be useful for ophthalmologists and researchers to work on automatic detection algorithms for Diabetic Retinopathy (DR).CONACYT - Consejo Nacional de Ciencia y TecnologíaPROCIENCI

Mapping 123 million neonatal, infant and child deaths between 2000 and 2017

Since 2000, many countries have achieved considerable success in improving child survival, but localized progress remains unclear. To inform efforts towards United Nations Sustainable Development Goal 3.2—to end preventable child deaths by 2030—we need consistently estimated data at the subnational level regarding child mortality rates and trends. Here we quantified, for the period 2000–2017, the subnational variation in mortality rates and number of deaths of neonates, infants and children under 5 years of age within 99 low- and middle-income countries using a geostatistical survival model. We estimated that 32% of children under 5 in these countries lived in districts that had attained rates of 25 or fewer child deaths per 1,000 live births by 2017, and that 58% of child deaths between 2000 and 2017 in these countries could have been averted in the absence of geographical inequality. This study enables the identification of high-mortality clusters, patterns of progress and geographical inequalities to inform appropriate investments and implementations that will help to improve the health of all populations

ECMO for COVID-19 patients in Europe and Israel

Since March 15th, 2020, 177 centres from Europe and Israel have joined the study, routinely reporting on the ECMO support they provide to COVID-19 patients. The mean annual number of cases treated with ECMO in the participating centres before the pandemic (2019) was 55. The number of COVID-19 patients has increased rapidly each week reaching 1531 treated patients as of September 14th. The greatest number of cases has been reported from France (n = 385), UK (n = 193), Germany (n = 176), Spain (n = 166), and Italy (n = 136) .The mean age of treated patients was 52.6 years (range 16–80), 79% were male. The ECMO configuration used was VV in 91% of cases, VA in 5% and other in 4%. The mean PaO2 before ECMO implantation was 65 mmHg. The mean duration of ECMO support thus far has been 18 days and the mean ICU length of stay of these patients was 33 days. As of the 14th September, overall 841 patients have been weaned from ECMO support, 601 died during ECMO support, 71 died after withdrawal of ECMO, 79 are still receiving ECMO support and for 10 patients status n.a. . Our preliminary data suggest that patients placed on ECMO with severe refractory respiratory or cardiac failure secondary to COVID-19 have a reasonable (55%) chance of survival. Further extensive data analysis is expected to provide invaluable information on the demographics, severity of illness, indications and different ECMO management strategies in these patients