Noise is an important source of stress that is able to impact negatively on animals' welfare.Anthropogenic activities are a major contributor to noise, and their cumulative effects on individuals could have consequences for wildlife populations. Although transportation noise impacts have been evaluated for vocal and charismatic animals, research regarding the effects of other types of anthropogenic noise on non-charismatic animals has not been undertaken. This research explored the effects of mining noise, which is prevalent in the Australian soundscape, on wild mice (Mus musculus) and Eastern blue tongued lizards (Tiliqua scincoides). The first experimental stage focused on developing a reliable methodology to assess behavioural responses in the blue tongued lizard, and suitable noise exposure and acoustic processing techniques for subsequent experimentation. This was achieved through the analysis of the effects of typical transport stressors on lizards' behaviour. Lizards were exposed to Heat (35 o C), Cold (15 o C), high or low frequency noise or a Control treatment with no stimulus in a test chamber for a 5 s. The test chamber was connected to an escape chamber, accessible after exposure to the stimulus, and a small hiding chamber opposite the test chamber. Lizard behaviour was monitored during stimulus exposure and then for a further 15 minutes, after which each lizard was removed. Lizards exposed to Cold spent less time in the test chamber and more time inactive in the escape chamber. They also spent longer walking towards the hiding chamber both away from the wall and by the wall and walking in the hiding chamber away from the stimulus. Thus, cold temperatures were noxious for lizards in a simulated transport environment as they reduced activity and increased escape attempts.In a second experiment, noise exposure was studied in more detail and the behaviour of blue tongued lizards when exposed to five combinations of mining machinery noise was evaluated.Lizards were exposed to low and high frequencies (≤ or > 2 kHz) at both low (60-65 dB (A)) and high (70-75 dB (A)) amplitudes, and a Control treatment, following the same exposure technique developed in the first experiment. In the test chamber lizards exposed to any mining machinery noise, but especially high frequencies, spent more time freezing, a typical stress response in reptiles, when compared with animals in the Control treatment. In the hiding chamber, high frequencies at high amplitudes decreased durations of the head being held to the right face downwards, suggesting a lateralized fear reaction. High frequency, high amplitude noise was the most detrimental. Mining noise had negative effects on the lizards' behavior and welfare. To estimate mining machinery noise effects on the second animal model, wild mice, amplitudes and frequencies were tested separately to differentiate between these two important components of noise. Using the high and low amplitudes previously established, wild mice were exposed to 3 weeks of continuous noise. Effe...
En la presente propuesta de mejora de procesos en Corporación ZAMTSU S.R.L., que es una empresa dedicada a la comercialización de instrumentos de medición industriales para el sector minero, energético y petrolero. Para la obtención de información, se realizaron entrevistas a los responsables de los procesos de venta y calibración, además se analizó una serie de registros, documentos, archivos, formatos y bases de datos, los cuales permitieron realizar un adecuado diagnóstico para establecer los problemas, sus causas y posibles soluciones. Una vez procesada la información, se llegó a la conclusión que, ZAMTSU no tenía un adecuado tratamiento para sus procesos, descuidando algunos aspectos de alta relevancia. Por otro lado, el 97% de los problemas encontrados se distribuye entre la falta de planificación en aprovisionamiento de instrumentos de medición industrial y retrasos en la calibración no conforme. Es por ello, que cualquier iniciativa o propuesta de mejora debe ir enfocada a los procesos que involucran estos problemas. El impacto económico por los procesos de calibración y ventas representa 72,412 nuevos soles de pérdida acumulada en el periodo 2013-2016, lo cual argumentó la elaboración de propuesta de mejora que se expondrá en los siguientes apartados.
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