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Performance ratings of impact noise insulation materials using the tapping machine and a non-standardized source
(ANTAC - Associação Nacional de Tecnologia do Ambiente Construído, 2020)
Different lead sources in an abandoned uranium mine (Urgeirica - Central Portugal) and its environment impact - isotopic evidence
(GEOLOGICAL SOC PUBL HOUSEBATH, 2012)
Different lead sources were identified in a large uranium tailings deposit (5Mton) in the Central Region of Portugal using lead isotopic ratios obtained by ICP-QMS. These ratios helped to clarify the different sources of ...
Social entrepreneurs’ views on traditional and impact investors in Brazil
(2021-12-13)
From the viewpoint of social entrepreneurs in Brazil who may resort to various sources of financing in the process of establishing and expanding their businesses while generating social and/or environmental impact, this ...
Avaliação do isolamento do ruído de impacto em baixas frequências de pisos de edifícios
(Universidade Federal de Santa MariaBREngenharia CivilUFSMPrograma de Pós-Graduação em Engenharia Civil, 2013-07-30)
The objective of this study is to evaluate the sound pressure level generated by different kinds of sound impact sources in buildings at frequencies between 80 - 400 Hz using different combinations of flooring and resilient ...
Influence of ideal and non-ideal excitation sources on the dynamics of a nonlinear vibro-impact system
(2013-01-01)
The objective of the present work is to analyze the dynamics of a vibro-impact system consisting of two blocks of different mass coupled by a spring with two stages. Two different types of excitation sources for the system ...
Influence of ideal and non-ideal excitation sources on the dynamics of a nonlinear vibro-impact system
(Polish Soc Theoretical & Applied Mechanics, 2013-01-01)
The objective of the present work is to analyze the dynamics of a vibro-impact system consisting of two blocks of different mass coupled by a spring with two stages. Two different types of excitation sources for the system ...
Different sources of phosphorus supplementation and its excretion by Nile tilapia juveniles (Oreochromis niloticus)
(2016-01-01)
Fish farming causes environmental impacts due to the wastewater produced by fish excreta and unconsumed feed. The differences in phosphorus excretion by Nile tilapia (Oreochromis niloticus) juveniles when fed diets composed ...