Results 41 to 50 of about 745 (145)

Barter and Hierarchy: A Practical Perspective on Food, Society, and Knowledge in the Inca Empire

open access: yesJournal of Arts, Humanities and Social Science
The Inca Empire developed a sophisticated system of food production, social organisation, and knowledge transmission without the use of money or writing. This article introduces the concept of a barter economy structured through hierarchical cooperation,
Luis-Felipe Arizmendi
doaj   +1 more source

Resistance exercise breaks during prolonged sitting augment the blood flow response to a subsequent oral glucose load in sedentary adults

open access: yesExperimental Physiology, Volume 111, Issue 6, Page 3082-3098, 1 June 2026.
Abstract Sitting‐induced impairments in postprandial blood flow are an important link between sedentary behaviour and cardiometabolic disease risk. The objective of this work was to examine the effects of resistance exercise breaks (REB) performed every 30 min during an otherwise sedentary 3‐h period on the vasodilatory response to a subsequent oral ...
Emily M. Rogers   +8 more
wiley   +1 more source

El modelo de Max Uhle para el estudio de los "quipus", a la luz de sus notas inéditas de trabajo de campo (1894-1897) [PDF]

open access: yes, 2000
This article illustrates the European models that were applied to the study of the quipu during the XIX century. Emphasis is given to the proposal of German archaeologist Max Uhle (1856-1944), who endorsed the diffusionist theory in vogue at that time ...
Loza, Carmen Beatriz
core   +1 more source

Report results: Impact of whole‐body resistance exercise timing on mitigating hyperglycaemia‐induced vascular dysfunction in healthy adults

open access: yesExperimental Physiology, Volume 111, Issue 4, Page 1657-1668, 1 April 2026.
Abstract Postprandial hyperglycaemia is characterized by elevated blood glucose levels following a meal and is associated with impaired vascular endothelial function. Regular exercise has been shown to preserve and improve vascular endothelial function.
Laura K. Smith   +6 more
wiley   +1 more source

Evidence for early endothelial dysfunction associated with the ALDH2 rs671 gene variant: A preliminary investigation with young East Asians

open access: yesExperimental Physiology, Volume 111, Issue 4, Page 1636-1642, 1 April 2026.
Abstract Aldehyde dehydrogenase 2 (ALDH2) is a mitochondrial enzyme that plays an important role in aldehyde detoxification. A large percentage (30–50%) of the East Asian population carry a single point mutation in the ALDH2 gene (ALDH2*2 variant) that causes a severe reduction or lack of ALDH2 enzyme activity, and leads to disrupted cellular ...
Beatrice Lioy   +4 more
wiley   +1 more source

Brachial blood flow and pressure responses are unrelated to the greater isometric handgrip tolerance of females compared to males

open access: yesPhysiological Reports, Volume 14, Issue 8, April 2026.
Abstract Isometric handgrip (IHG) training lowers blood pressure (BP), but sex differences in fatigability may be confounding. We hypothesized that the greater time‐to‐fatigue during IHG in females would relate to preserved brachial blood flow, with males exhibiting reductions in flow.
João L. Marôco   +6 more
wiley   +1 more source

Quipu y Quilca

open access: yesBoletín APAR, 2015
El primer problema historiográfi co por dilucidar en el campo histórico peruano, es el que se refi ere a la existencia de la escritura entre los Incas o los pueblos preincaicos, al que se liga por muchos la existencia misma de la historia. El análisis de las originales formas mnemotécnicas usadas por los Incas, puede llevar a un ensanchamiento de la ...
openaire   +1 more source

Los modelos etnomatemáticos de representación cosmogónica en los pueblos indígenas Americanos

open access: yesRevista Latinoamericana de Etnomatemática, 2015
Diverse forms of representation used in the past and in the present by American indigenous peoples of many cultures are pointed out and analyzed in this paper.
Alejandro Jaén Rojas
doaj   +2 more sources

Weaving Waves. A platform on text, textile and technology

open access: yesArtnodes
Weaving Waves is a speculative platform to study shared genealogies between text, textiles and technology. Due to the nature of the research, this proposal is necessarily conceived as partial.
Lorenzo Sandoval
doaj   +1 more source

Similarities and differences in carotid artery, hemodynamic, and autonomic reactivity induced by mental stress or cold in adults: A randomized crossover study

open access: yesPhysiological Reports, Volume 14, Issue 5, March 2026.
The Stroop test and cold pressor test elicit comparable common carotid artery vasodilation. However, mental stress induced by the Stroop test leads to an earlier peak response, possibly influenced by anticipatory mechanisms. Created in BioRender. Speretta, G. (2026) https://BioRender.com/mwpc1hw.
Francisco J. Fensterseifer   +5 more
wiley   +1 more source

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