Pedro Xavier da Silva

ORCID: 0000-0002-4217-0126
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About
Contact & Profiles
Research Areas
  • Animal Nutrition and Physiology
  • Archaeological and Geological Studies
  • Pleistocene-Era Hominins and Archaeology
  • Archaeological and Historical Studies
  • Archaeology and ancient environmental studies
  • Geological and Geophysical Studies Worldwide
  • Geology and Paleoclimatology Research
  • Antioxidant Activity and Oxidative Stress
  • Meat and Animal Product Quality
  • Forensic Anthropology and Bioarchaeology Studies
  • Animal Genetics and Reproduction
  • T-cell and Retrovirus Studies
  • Male Reproductive Health Studies
  • Pineapple and bromelain studies
  • Image Processing and 3D Reconstruction
  • Rural Development and Agriculture
  • Vascular Malformations and Hemangiomas
  • Aquaculture Nutrition and Growth
  • Environmental Sustainability and Education
  • Birth, Development, and Health
  • Maritime and Coastal Archaeology
  • Digestive system and related health
  • Agricultural and Food Sciences
  • Maternal and Neonatal Healthcare
  • Plant Virus Research Studies

University of Minho
2019-2023

Direção Geral do Património Cultural
2020-2023

Universidade Federal de Santa Catarina
2019

Universidade Federal do Rio Grande do Sul
2009-2016

The Tardiglacial of Portugal has been associated with the Magdalenian culture and lithic industries characterized by tool miniaturization, a diversity microlith types, absence intentional blade production. technological characterization, chronology phasing Portuguese have defined based on data recovered from open-air sites Estremadura region (Central Portugal). This paper presents an overview research undertaken over last twenty-five years, including results preventive archaeology fieldwork...

10.1016/j.quaint.2020.03.018 article EN cc-by-nc-nd Quaternary International 2020-04-09

An experiment was carried out with the objective of evaluating addition 25-hydroxycholecalciferol (25(OH) D3) in diets broiler breeder hens. The used Cobb 500 hens and allotted to a complete randomized design four treatments eight replications twenty females two males each. consisted vitamin premixes 2,000 3,400 IU/kg diet D3 as only source or IU plus 35 69 mg/t 25(OH) D3. Results this indicated that had no significant effect on egg production parameters from 32 67 weeks. supplementation...

10.1590/s1516-35982009000700018 article EN cc-by Revista Brasileira de Zootecnia 2009-07-01

Abstract In the 1990s, a research project was developed to identify, in mountainous areas of Northwest (NW) Portugal, existence an occupation model associated with last hunter–gatherer prehistoric communities region. Therefore, set consistent and detailed field surveys took place mountains NW leading discovery archaeological site named “Rock Shelter 1 Cerdeira Valley,” granite rock shelter situated Cabreira mountain. The campaigns excavations undertaken permitted identification two...

10.1515/opar-2022-0252 article EN cc-by Open Archaeology 2022-01-01

Os anticoncepcionais hormonais orais proporcionam contracepção de grande eficácia, sejam sintéticos ou naturais, sendo o método mais utilizado por mulheres no mundo. Contudo, à medida em que se aumentou uso dos hormônios, também fez a incidência Trombose Venosa Profunda (TVP) nessa população. Diante disso, evidencia-se necessidade investigar literatura relacione esses eventos.

10.34119/bjhrv7n10-105 article PT Brazilian Journal of Health Review 2024-12-16

The present work concerns the study of geological raw materials obtained from an excavation site located in Serra da Cabreira (NW Portugal). majority artifacts are made quartz varieties (with minor occurrences flint). Milky is dominant, being similar to diverse veins immediate neighborhood. There other varieties, indicating possibility locations farther away shelter. can be seen as important source archaeological information, illustrating evolution past relationships between humans and...

10.3390/iecg2019-06191 article EN cc-by 2019-06-04

Geological raw materials are an important component of the archaeological record in Prehistory (namely due to their persistence under buried conditions) and pinpointing original position on geological context could give information about activities ancient human groups. However, lithic artefacts impose strict restrictions analytical procedures need preserve features with cultural meaning, which might affect effectiveness procedure. We attempt here a critical overview non-destructive...

10.17979/cadlaxe.2019.41.1.5820 article EN cc-by-sa Cadernos do Laboratorio Xeolóxico de Laxe Revista de Xeoloxía Galega e do Hercínico Peninsular 2019-12-02

As tecnologias de informação têm sido vistas como um fator fundamental para a tomada decisão na agricultura e pecuária. A atividade rural possui determinados fatores que difere outras atividades econômicas, o produtor necessita controlar, organizar planejar sua produção, fim se obter uma maior lucratividade. Desta forma, abrem-se possibilidades da utilização das auxiliar nas ações administrativas gerenciais propriedades. O presente estudo busca analisar importância propriedades rurais do...

10.17765/2176-9168.2016v9n2p305-322 article PT cc-by-nc Revista em Agronegócio e Meio Ambiente 2016-07-01

Resumo: O acompanhamento arqueológico realizado no âmbito da construção de um pavilhão industrial, lugar Bouro, Esposende (NW Portugal), permitiu a recolha mais duas centenas artefactos líticos talhados, produzidos partir seixos rolados quartzito. conjunto significativo, com utensílios que remetem para o tecno-complexo Acheulense (bifaces e unifaces), associa-se terraço marinho implantado 15-20 m n.m.m. Tendo como referência datações por OSL obtidas em terraços marinhos localizados norte,...

10.30893/eq.v0i23.208 article PT Estudos do Quaternário / Quaternary Studies 2023-04-22
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