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Results for “Guyana”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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DOE OSTI2020

Energy Snapshot - Guyana

This profile provides a snapshot of the energy landscape for Guyana, a country on the northern mainland of South America that is culturally tied to the Caribbean. In the Nationally Determined Contributions, Guyana has committed to develop a mix of wind, solar, biomass and hydro-power to supply both demand of the national grid and the energy requirements for towns and villages in Guyana’s hinterland. Guyana has set an ambitious target of achieving close to 100% renewable energy in the power sector by 2025.

44 EE - Strategic Programs, Energy Transition Init↗

DOE OSTI2020

Guyana Energy Snapshot 2020

This fact sheet is an update of Energy Transitions Initiative Islands series energy profile for Guyana.

ETI, Energy Transitions Initiative, Islands, Snaps↗

DOE OSTI2020

Farysia magdalena sp. nov. and description of the anamorph of Anthracocystis heteropogonicola from the Americas

Several interesting Ustilaginaceae yeast morphs were isolated during ongoing surveys of phylloplane-associated fungi in Louisiana (USA) and Guyana. In this work, we describe Farysia magdalena sp. nov., a phylloplane yeast isolated in southern Louisiana, based on phylogenetic analyses, assimilation profiles and morphological characters, and discuss the yeast morphs in this genus. Additionally, we describe the anamorphic stage of Anthracocystis heteropogonicola, isolated from plant phylloplanes from the Americas. This is the first report of this fungus in the Western Hemisphere and the first description of the yeast morph for a species of Anthracocystis.

1 new taxon↗

DOE OSTI2024

Identification of 2 Novel Subtypes of Hepatitis C Virus Genotype 8 and a Potential New Genotype Successfully Treated With Direct Acting Antivirals

Abstract Background Hepatitis C virus (HCV) has high genetic diversity and is classified into 8 genotypes and >90 subtypes, with some endemic to specific world regions. This could compromise direct-acting antiviral efficacy and global HCV elimination. Methods We characterized HCV subtypes “rare” in the United Kingdom (non-1a/1b/2b/3a/4d) by means of whole-genome sequencing via a national surveillance program. Genetic analyses to determine the genotype of samples with unresolved genotypes were undertaken by comparison with International Committee on Taxonomy of Viruses HCV reference sequences. Results Two HCV variants were characterized as being closely related to the recently identified genotype (GT) 8, with >85% pairwise genetic distance similarity to GT8 sequences and within the typical intersubtype genetic distance range. The individuals infected by the variants were UK residents originally from Pakistan and India. In contrast, a third variant was only confidently identified to be more similar to GT6 compared with other genotypes across 6% of the genome and was isolated from a UK resident originally from Guyana. All 3 were cured with pangenotypic direct-acting antivirals (sofosbuvir-velpatasvir or glecaprevir-pibrentasvir) despite the presence of resistance polymorphisms in NS3 (80K/168E), NS5A (28V/30S/62L/92S/93S) and NS5B (159F). Conclusions This study expands our knowledge of HCV diversity by identifying 2 new GT8 subtypes and potentially a new genotype.

59 BASIC BIOLOGICAL SCIENCES↗

DOE OSTI2020

Energy Snapshot - Suriname

This is a snapshot of the energy landscape of Suriname, a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north, French Guiana to the east, Guyana to the west and Brazil to the south.

44 EE - Strategic Programs, Energy Transition Init↗