Density, viscosity, refractive index, and related thermophysical properties of dibutyl ether +2-butanol + cyclohexane ternary systems

Producción CientíficaNew measured data for density, (ρ), dynamic and kinematic viscosities, (μD and μc), and refractive index, (nD), are presented at T = 298.15 K and p = 0.1 MPa for binary and ternary mixtures containing dibutyl ether, 2-butanol, and cyclohexane. As a result, the derived properties are estimated based on the measured data. Excess molar volume, (VE), dynamic viscosity deviation (ΔμD), and deviation in refractive index, (ΔnD), as derived properties, are fitted using the Redlich–Kister equation. In addition, perturbed-chain statistical associating fluid theory equation of state is employed to correlate the measured data of density

Genomic Sequencing of Dengue Virus Strains Associated with Papua New Guinean Outbreaks in 2016 Reveals Endemic Circulation of DENV-1 and DENV-2

Over the past decade, the Pacific region has experienced many arboviral outbreaks, including dengue, chikungunya, and Zika viruses. Papua New Guinea (PNG) has a high burden of arboviral diseases, but there is a paucity of knowledge about the epidemiology and circulation of these viruses in the country. In this study, we report investigations into suspected arboviral outbreaks of febrile disease in PNG from December 2015 to June 2017. DENV-1 and DENV-2 were the mostly commonly detected viruses, and low circulation of DENV-3 and ZIKV was also detected. DENV-4 and CHIKV were not detected during this period. Full genome sequencing of selected positive samples revealed that circulation was dominated by endemic indigenous strains belonging to DENV-1 (genotype IV) and DENV-2 (genotype C) that have been present in the country for up to a decade. A DENV-2 sublineage was also identified that has been associated with outbreaks of severe dengue in both PNG and the Solomon Islands

Obesity and the food system transformation in Latin America

The Latin America and the Caribbean (LAC) region faces a major diet-related health problem accompanied by enormous economic and social costs. The shifts in diet are profound: major shifts in intake of less-healthful low-nutrient-density foods and sugary beverages, changes in away-from-home eating and snacking and rapid shifts towards very high levels of overweight and obesity among all ages along with, in some countries, high burdens of stunting. Diet changes have occurred in parallel to, and in two-way causality with, changes in the broad food system – the set of supply chains from farms, through midstream segments of processing, wholesale and logistics, to downstream segments of retail and food service (restaurants and fast food chains). An essential contribution of this piece is to marry and integrate the nutrition transition literature with the literature on the economics of food system transformation. These two literatures and debates have been to date largely ‘two ships passing in the night’. This review documents in-depth the recent history of rapid growth and transformation of that broad food system in LAC, with the rapid rise of supermarkets, large processors, fast food chains and food logistics firms. The transformation is the story of a ‘double-edged sword’, showing its links to various negative diet side trends, e.g. the rise of consumption of fast food and highly processed food, as well as in parallel, to various positive trends, e.g. the reduction of the cost of food, de-seasonalization, increase of convenience of food preparation reducing women's time associated with that and increase of availability of some nutritious foods like meat and dairy. We view the transformation of the food system, as well as certain aspects of diet change linked to long-run changes in employment and demographics (e.g. the quest for convenience), as broad parameters that will endure for the next decades without truly major regulatory and fiscal changes. We then focus in on what are the steps that are being and can be taken to curb the negative effects on diet of these changes. We show that countries in LAC are already among the global leaders in initiating demand-related solutions via taxation and marketing controls. But we also show that this is only a small step forward. To shift LAC's food supply towards prices that incentivize consumption of healthier diets and demand away from the less healthy component is not simple and will not happen immediately. We must be cognizant that ultimately, food industry firms must be incentivized to market the components of healthy diets. This will primarily need to be via selective taxes and subsidies, marketing controls, as well as food quality regulations, consumer education and, in the medium term, consumers' desires to combine healthier foods with their ongoing quest for convenience in the face of busy lives. In the end, the food industry in LAC will orient itself towards profitable solutions, ie those demanded by the broad mass of consumers

Construction St Mary's Cathedral

St Mary's Catholic Cathedral nearing completion showing bell tower and concrete arch construction, located at the corner of Smith Street and McLachlan Street.Abala, Nyleta.Date:196

Monetary Policy Convergence within the EAC: A Focus on Interest Rate and Exchange Rate

This study was conducted to establish whether the key variables in monetary policy transmission mechanisms are converging within the East African Community. This region is eyeing having an economic union and subsequently a monetary union hence the significance of investing developments in the monetary sector. The analysis used panel data from the year 2005 to 2020 for five EACs. To test for convergence of interest rates and exchange rates, the analysis employed; unit-root test, sigma convergence, co-integration tests, and finally used the panel fixed effect model to establish the impact of the two variables on the GDP. The analysis shows that in the short run, there is no convergence in interest rates but there is convergence in exchange rates. However, in the long run, the two monetary policy variables are co-integrated indicating that the region is doing well in terms of integration in the financial sector in their preparation to form a common trade area and monetary union. The analysis of the impact of the two variables on economic growth shows that only the exchange rate is significant, therefore, the region should strive to foster a stable exchange rate regime to realize increased economic growth

Darwin view

Overview of part of Darwin seen from the corner of Cavenagh Street and Knuckey Street, showing Stokes Hill Power House, Chinese Temple and the houses in Litchfield Street. Looking towards the port.Abala, Nyleta.Date:197

Building site

Site of the Beaufort Hotel located between the Esplanade and Mitchell Street, showing the Poiniana Motel at centre right, and St Mary's Catholic Catheral further back.Abala, Nyleta.Date:198

Hospital

Darwin Hospital main building, as built in 1942, fronting onto Mitchell Street, before the street was closed off to allow the building of a new administrative section at right angles to the facade shown here. Hospital precinct vacated in the 1970s, when new Royal Darwin Hospital at Casuarina completed. Became Myilly Point campus of Northern Territory University.Abala, Nyleta.Date:196

Church

Christ Church Anglican Cathedral prior to Cyclone Tracy (1974) which blew all except the vestibule down.Abala, Nyleta.Date:196