Results 51 to 60 of about 318,211 (166)

An evaluation of geographic and annual variation in morphometric characters and gill-raker counts of yellowfin tuna, Thunnus albacares, from the Pacific Ocean [PDF]

open access: yes, 1992
ENGLISH: Samples of yellowfin tuna, Thunnus albacares, collected from five areas of the Pacific Ocean (Mexico, Ecuador, Australia, Japan, and Hawaii) between January and May of 1988 and 1990 were examined for spatiotemporal variation in morphometric ...
Schaefer, Kurt M.
core  

Strategic materials and state capacity in Renaissance Italy: The economic policies of ‘Roman saltpetre’ procurement

open access: yesThe Economic History Review, Volume 79, Issue 2, Page 757-780, May 2026.
Abstract Demonstrating the existence of a soaring demand for strategic materials in fifteenth‐century Rome, the article pioneers research in the late medieval trade in saltpetre, the irreplaceable, rare component of gunpowder, indispensable for waging war following the diffusion of artillery technology.
Fabrizio Antonio Ansani
wiley   +1 more source

Diet composition of fish species from the southern continental shelf of Colombia [PDF]

open access: yes, 2002
The diet composition of 30 fish species belonging to 16 families from the Pacific Coast of Colombia is described. Benthic crustaceans (37.5%) and bony fishes (23.7%, chiefly demersal) were the most important food items for the fish species analyzed. Data
Arcila, C.A.T., Lopez-Peralta, R.H.
core  

The Role of Tax‐Benefit Systems in Reducing the Gender Income Gap in Latin America

open access: yesSocial Policy &Administration, Volume 60, Issue 3, Page 390-408, May 2026.
ABSTRACT This paper aims to assess the extent to which cash transfers, direct taxes, and social insurance contributions help to reduce gender income inequalities in seven Latin American countries: Argentina, Bolivia, Colombia, Ecuador, Mexico, Peru, and Uruguay.
María Cecilia Deza   +4 more
wiley   +1 more source

Gillraker analysis and speciation in the thread herring genus Opisthonema [PDF]

open access: yes, 1963
ENGLISH: The thread herrings, genus Opisthonema, family Clupeidae, are marine fishes that occur only in tropical and subtropical waters off both coasts of the American continent.
Barrett, Izadore, Berry, Frederick H.
core  

High‐Resolution Observations Unveil (Sub)Mesoscale Heat Fluxes Shaping Upper‐Ocean Heat Content

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Upper‐ocean heat content (UOHC) modulates air–sea exchange in tropical regions; however, its variability at (sub)mesoscale remains insufficiently resolved. Here we combine Surface Water and Ocean Topography (SWOT) observations with high‐resolution glider sections in the northeastern tropical Pacific, where mesoscale eddies and sharp frontal ...
Mathieu Gentil   +5 more
wiley   +1 more source

Why do entrepreneurs leave the market? An explanation from experimental economics in Peru

open access: yesEconomía, 2016
Understanding the behavior of those who start--or intend to start--a business is vital for a country of entrepreneurs such as Peru, which registered the third highest rate of active entrepreneurship worldwide in 2011, according to the Global ...
José Carlos Raunelli   +2 more
doaj   +1 more source

Survey of El Nino 1957-58 in its relation to tropical pacific meteorology [PDF]

open access: yes, 1966
ENGLISH: The survey aims at demonstrating the close relationship between anomalies of sea temperature observed along the tropical Pacific coast of the Americas and those observed in the oceanwide tropical belt. The survey also covers the variations, from
Bjerknes, Jacob
core  

Meridional Dipole in Eddy Activity Along Peruvian Coast During Eastern Pacific El Niño Events

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Mesoscale oceanic eddies (O $O$(100)km) play a key role in regulating climate by affecting the transport of heat and water mass properties. However, most climate models struggle to simulate these eddies due to coarse horizontal resolution. Using a 120‐year ultra‐high‐resolution simulation with 1/10° ${}^{\circ}$ horizontal ocean resolution ...
Carlos Conejero   +5 more
wiley   +1 more source

Labor Market Discrimination Against Venezuelans in Peru: Evidence from a Correspondence Study

open access: yesEconomía
Through a correspondence study in Peru between July and September of 2021, we analyze the probability of Peruvian and Venezuelan applicants receiving callbacks to participate in a second stage of a job selection process. We studied the difference in the
Javier Torres   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy