Dangerous Activity
Mostrando 1-12 de 38 artigos, teses e dissertações.
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1. Peculiarities of drilling and blasting in underground small-scale mines
Abstract Artisanal and Small-scale Mining (ASM) is a prominent activity in the extractive industry: considering only gold, it produces about 20% of the world market supply. Despite this fact, ASM is generally associated with the negative aspects of its environ mental impact, and operational research is generally neglected. This article empha sizes the peculi
REM, Int. Eng. J.. Publicado em: 2020-09
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2. Risk management during construction of electric power substations
Resumo A construção de subestações de energia elétrica representa um grande número de riscos devido ao seu ambiente periculoso. O objetivo deste trabalho foi avaliar a percepção dos trabalhadores da construção civil sobre os riscos, os métodos que utilizam para avaliação e o gerenciamento dos riscos a que estão expostos. Este estudo realizou um
Gest. Prod.. Publicado em: 17/10/2019
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3. Bioactivity and action mechanism of green propolis against Pythium aphanidermatum
Abstract: We have established how natural compounds from green propolis collected by the species Apis mellifera act against the growth of Pythium aphanidermatum. On the basis of mass spectrometry (Q-ToF MS), we determined that Artepillin C, the major constituent of green propolis, underlies the effect and displays activity against P. aphanidermatum at a mini
An. Acad. Bras. Ciênc.. Publicado em: 01/07/2019
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4. Cloning, structural modelling and characterization of VesT2s, a wasp venom hyaluronidase (HAase) from Vespa tropica
Abstract Background: Wasp venom is a complex mixture containing proteins, enzymes and small molecules, including some of the most dangerous allergens. The greater banded wasp (Vespa tropica) is well-known for its lethal venom, whose one of the major components is a hyaluronidase (HAase). It is believed that the high protein proportion and activity of this e
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 01/12/2016
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5. Role of pH on antioxidants production by Spirulina (Arthrospira) platensis
Abstract Algae can tolerate a broad range of growing conditions but extreme conditions may lead to the generation of highly dangerous reactive oxygen species (ROS), which may cause the deterioration of cell metabolism and damage cellular components. The antioxidants produced by algae alleviate the harmful effects of ROS. While the enhancement of antioxidant
Braz. J. Microbiol.. Publicado em: 2016-06
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6. O enfrentamento da dependência de crack em crianças e adolescentes pelas equipes multiproficionais da rede de saúde mental do município de Cascavel : estratégias, desafios e possibilidades
Drugs have always existed and they will hardly disappear. In each historical period new substances were used. Crack cocaine appears as the contemporary drug. It presents some similarities with other drugs regarding to risk, protection factors and the strategies of treatment, but at the same time, it s different from the others because of the speed the depend
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2011
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7. Efeito ansiolítico do ondansetron, antagonista dos receptores 5-HT3, injetado na amídala de camundongos submetidos à exposição e reexposição no labirinto em cruz elevado
Against of stimuli that are dangerous, animals manifest defense reactions that cause fear and anxiety. These stimuli activate the serotonergic system, which sends projections to structures involved in defense mechanisms such as the septum, hypothalamus, hippocampus, amygdala and periaqueductal gray modulates the behavioral changes that can be characterized a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2011
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8. Correlation of biological serum markers with the degree of hepatic fibrosis and necroinflammatory activity in hepatitis C and schistosomiasis patients
Liver biopsy is the gold-standard method to stage fibrosis; however, it is an invasive procedure and is potentially dangerous. The main objective of this study was to evaluate biological markers, such as cytokines IL-13, IFN-γ, TNF-α and TGF-β, platelets, bilirubins (Bil), alanine aminotransferase (ALT) and aspartate aminotransferase (AST), total proteins
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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9. Origins of the coronary arteries and their significance
OBJECTIVE: To describe the normal and variant anatomy of the coronary artery ostia in Indian subjects. INTRODUCTION: Anomalous coronary origins may cause potentially dangerous symptoms, and even sudden death during strenuous activity. A cadaveric study in an unsuspected population provides a basis for understanding the normal variants, which may facilitate d
Clinics. Publicado em: 2010
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10. Purification and partial characterization of a coagulant serine protease from the venom of the Iranian snake Agkistrodon halys
Agkistrodon halys is one of several dangerous snake species in Iran. Among the most important signs and symptoms in patients envenomated by this snake is disseminated intravascular coagulation. A thrombin-like enzyme, called AH143, was isolated from Agkistrodon halys venom by gel filtration on a Sephadex G-50 column, ion-exchange chromatography on a DEAE-Sep
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2009
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11. Estudo do comportamento alimentar de raias de água doce em cativeiro, e de seus aspectos biológicos
Freshwater stingrays (Potamotrygonidae) belong to the only family of elasmobranches totally adapted for live in freshwater. Not much is known about them and their biological aspects. They own special skills for active predation and appropriate to several kinds of food. The studies about freshwater stingrays, essentially of behavior, are rare, people believe
Publicado em: 2008
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12. Response of tomato plants (Lycopersicon esculentum cv Micro-Tom) to cadmium / Resposta de plantas de tomate (Lycopersicon esculentum cv Micro-Tom) ao cádmio
It is known that among the main environmental contaminants are included the heavy metals, a result of the intense industrialized activity. Cadmium (Cd) is a non essential element that is among the most dangerous heavy metals, leading to considerable losses in plant productivity and hazardous health effects, even in low concentrations. Considering the high Cd
Publicado em: 2008