Search results for "amazon"
showing 10 items of 97 documents
Wide-scope screening of pharmaceuticals, illicit drugs and their metabolites in the Amazon River.
2021
Only a limited number of households in the Amazon are served by sewage collection or treatment facili- ties, suggesting that there might be a significant emission of pharmaceuticals and other wastewater contaminants into freshwater ecosystems. In this work, we performed a wide-scope screening to assess the occurrence of pharmaceuticals, illicit drugs and their metabolites in freshwater ecosystems of the Brazilian Amazon. Our study included 40 samples taken along the Amazon River, in three of its major tributaries, and in small tributaries crossing four important urban areas (Manaus, Santarém, Macapá, Belém). More than 900 compounds were investigated making use of target and suspect screenin…
“Pensare con” i popoli indigeni dell’Amazzonia i rapporti tra uomo e cosmo
2020
Despite the devastation produced by centuries of European colonization, Amerindian societies have maintained worldviews and conceptions of humanity which present a great richness, originality and variety. As shown both by Lévi-Strauss (1992) and, in a study perspective closer to Eliade's approach, by Sullivan (1988), they share some common characteristics which it is useful to compare, by difference and analogy, with those of Euro-Western cosmologies. As Viveiros de Castro argued with specific reference to the indigenous cosmologies of the Amazon, the importance of the aspects of relationality of reality, its eminently transformative dynamic nature, the ontological multiplicity of its compo…
Danno da prodotto difettoso e responsabilità delle piattaforme di E-Commerce: uno sguardo oltreoceano
2022
L’articolo prende in esame due recenti decisioni della Court of Appeal della California circa la responsabilità delle piattaforme di e-commerce per prodotti difettosi alienati da venditori circa la responsabilità delle piattaforme di e-commerce per prodotti difettosi alienati da venditori terzi. Dopo aver ricostruito il case law californiano in materia di danno da prodotto ed il ruolo della tradizionale filiera distributiva nel migliorare la sicurezza dei prodotti, l’Autore passa all’esame delle pronunce della Court of Appeal rese nei casi Bolger v. Amazon.com del 2020 e Loomis v. Amazon.com del 2021. Secondo la Corte di secondo grado, le piattaforme di e-commerce sono destinatarie del regi…
Brazīlijas Federatīvās Republikas starptautisko pienākumu saturs attiecībā pret amazones baseina lietusmežu ugunsgrēku novēršanu
2020
Amazones baseina lietus mežs sedz ievērojamu Brazīlijas Federatīvās Republikas teritorijas daļu, un Brazīlijai ir saistoši vairāki starptautiska rakstura pienākumi saistībā ar cilvēktiesībām un vides aizsardzību ugunsgrēku novēršanā. 2019. gada vasarā Amazones lietus mežā izcēlās apjomīgs ugunsgrēks, kā pamatā ir vairāki iespējamie izcelšanās iemesli, piemēram, neilgtspējīga mežsaimniecība, neefektīvs nacionālais regulējums sankciju piemērošanā un ietekmes uz vidi novērtējuma īstenošanā, kā arī prettiesiska Amazones baseina mežu izciršana lauksaimniecības vajadzībām. Darba mērķis ir apzināt Brazīlijas starptautiskos vides tiesību un cilvēktiesību pienākumus un noskaidrot, vai cita valsts, k…
Health and Demographic Characteristics of Patients Attending a Newly-Opened Medical Facility in a Remote Amazonian Community: A Descriptive Study
2018
Peru is a country with wide regional disparities in health. Remote Amazonian communities have high rates of poverty and poor access to health services. There is a lack of data on morbidity and use of health services in the region. We describe a descriptive, cross-sectional study of the demographic characteristics and presenting complaints of attendees to a newly-opened primary care facility in a remote community. This was supplemented by structured interviews of adult attendees to build a picture of sociocultural determinants of health locally, including engagement with traditional forms of medicine. Our study provides novel insights into an under-studied and under-resourced area. We found …
From habitat use to social behavior: natural history of a voiceless poison frog, Dendrobates tinctorius
2019
AbstractDescriptive studies of natural history have always been a source of knowledge on which experimental work and scientific progress rely. Poison frogs are a well-studied group of small Neotropical frogs with diverse parental behaviors, distinct calls, and bright colors that warn predators about their toxicity; and a showcase of advances in fundamental biology through natural history observations. The dyeing poison frog, Dendrobates tinctorius, is emblematic of the Guianas region, widespread in the pet-trade, and increasingly popular in research. This species shows several unusual behaviors, such as the lack of advertisement calls and the aggregation around tree-fall gaps, which remain …
Editorial : Tropical Climate Variability and Change: Impacts in the Amazon
2019
Vast amounts of data from satellites and ground-based systems, and improvements on modeling techniques, allows a better understanding of Earth processes and advances on climate science. The tropics play a key role on global climate processes, and the tropical forest is a sensitive biome in the global hydrological and carbon cycles. In particular, the Amazon region includes about one half of the world’s tropical forest, and relatively small change in Amazon forest dynamics have the potential to substantially affect the rate of climate change. This Research Topics focus on recent finding on the impacts of tropical climate variability and change over the Amazon ecosystem using satellite data, …
Sensitivities of Amazonian clouds to aerosols and updraft speed
2017
Abstract. The effects of aerosol particles and updraft speed on warm-phase cloud microphysical properties are studied in the Amazon region as part of the ACRIDICON-CHUVA experiment. Here we expand the sensitivity analysis usually found in the literature by concomitantly considering cloud evolution, putting the sensitivity quantifications into perspective in relation to in-cloud processing, and by considering the effects on droplet size distribution (DSD) shape. Our in situ aircraft measurements over the Amazon Basin cover a wide range of particle concentration and thermodynamic conditions, from the pristine regions over coastal and forested areas to the southern Amazon, which is highly poll…
Systematics of the Boana semilineata species group (Anura: Hylidae), with a description of two new species from Amazonian Ecuador
2020
Abstract The combination of genetic and phenotypic characters for species delimitation has allowed the discovery of many undescribed species of Neotropical amphibians. In this study, we used DNA sequences (genes 12S, 16S, ND1 and COI) and morphologic, bioacoustic and environmental characters of the Boana semilineata group to evaluate their phylogenetic relationships and assess their species limits. In addition, we included DNA sequences of several species of Boana to explore cryptic diversity in other groups. We found three Confirmed Candidate Species (CCS) within the B. semilineata group. Holotype examination of Hyla appendiculata shows that it is a valid species that corresponds to one of…
Transformation of the Forest-based Bioeconomy by Embracing Digital Solutions
2017
This paper attempts to explore a new insight to both industrialized and growing economies by demonstrating a digital-driven creative disruption in the forest-based bioeconomy which is beginning to replace its conventional and narrow concept of a forest-blinded economy. Notwithstanding the potential broad cross-sectoral benefits to both industrialized and growing economies, natural environments and locality constraints and the incessant challenge of distance have impeded balanced development of this economy. However, driven by digital solutions the economy has taken big steps forward in recent years. Digitalization has enabled real-time end-to-end supply chain visibility, improved delivery a…