Intrinsic characterization of structure-borne sound sources and isolators from in-situ measurements

2013 ◽  
Vol 133 (5) ◽  
pp. 3462-3462
Author(s):  
Andy Moorhouse ◽  
Andy Elliott ◽  
Yong Hwa Heo
Keyword(s):  
In Situ Measurements ◽  
Sound Sources ◽  
Intrinsic Characterization

scholarly journals Characterization of Water and Energy Consumptions at the End Use Level in Rural and Urban Environments: Preliminary Results of the ENERWAT Project

Urban Science ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 8
Author(s):  
Cristina Matos ◽  
António Cunha ◽  
Francisco Pereira ◽  
Arminda Gonçalves ◽  
Elisabete Silva ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Urban Environments ◽  
In Situ Measurements ◽  
Joint Analysis ◽  
Preliminary Results ◽  
Rural And Urban ◽  
Energy Consumptions ◽  
End Use

The characterization of water and energy consumptions is essential in order to define strategies for their rational use. The way these resources are used in households is the path for efficient and rational management, interdependent from each other. It is believed that there are significant differences between the patterns of water and energy consumption in rural and urban areas, where influencing factors should also be identified. This article aims to provide some preliminary results of a research project named ENERWAT, with the main goal to characterize the relation between water and energy consumption at the end use level for urban and rural environments. One of the goals of the aforementioned project was the design, application, and results analysis of a survey, in order to find the main differences in the water and energy consumptions at the end use level and the factors that influence it in urban and rural households. A total of 245 households participated in the research during 2016 (110 urban dwellings and 135 rural), responding to questions on their family composition, dwellings characterization, water and energy consumption habits, and conservation behaviors of these resources. The project also includes the instrumentation and monitoring of dwellings in rural and urban environments to quantify the water consumption and related energy consumption. This stage is still in progress and includes in situ measurements of nine different households (four in rural and five in urban environments) during at least one year. In this article, some of the results obtained by the survey application and the in situ measurements are presented. Despite the large number of data and the associated complexity, it can be concluded that the joint analysis of the results allows identification of a connection between water and energy consumption, as well as a household’s consumption patterns.

Characterization of Resistivity of Sb2S3 Semiconductor Nanowires by Conductive AFM and In Situ Methods

2011 ◽  
Vol 222 ◽  
pp. 106-109
Author(s):  
Janis Bukins ◽  
Gunta Kunakova ◽  
Pāvels Birjukovs ◽  
Juris Prikulis ◽  
Justin Varghese ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Adhesion Force ◽  
Semiconductor Nanowires ◽  
Soft Material ◽  
In Situ Measurements ◽  
Conductive Afm ◽  
In Situ Methods

Conductive AFM and in situ methods were used to determine contact resistance and resistivity of individual Sb2S3 nanowires. Nanowires were deposited on oxidized Si surface for in situ measurements and on Si surface with macroelectrodes for conductive AFM (C-AFM) measurements. Contact resistance was determined by measurement of I(V) characteristics at different distances from the nanowire contact with the macroelectrode and resistivity of nanowires was determined. Sb2S3 is a soft material with low adhesion force to the surface and therefore special precautions were taken during measurements.

Comparison of different in situ measurements techniques of intelligibility in an open-plan office

2018 ◽  
Vol 25 (2) ◽  
pp. 111-122 ◽  
Author(s):  
Dario D’Orazio ◽  
Elena Rossi ◽  
Massimo Garai
Keyword(s):  
Direct Method ◽  
Measurement Techniques ◽  
Background Level ◽  
In Situ Measurements ◽  
Sound Sources ◽  
Transmission Index ◽  
Acoustic Comfort ◽  
Open Plan

Acoustic comfort in open-plan offices is a relatively recent research topic and some practices have not yet been consolidated. The goal in these spaces is to achieve good speech privacy at every workstation, reaching a high value of spatial decay of the sound pressure level. In case of refurbishment, a proper measurement of intelligibility criteria is needed, for example, in order to properly calibrate a numerical model or to plan acoustic treatments. This work compares different measurement techniques to evaluate the spatial distribution of intelligibility criteria. In situ measurements were done in an open-plan office used as a case study. Both omnidirectional and directional sound sources with different sound power levels were used, according, respectively, to ISO 3382-3:2012 and ITU-T P.51:1996. Furthermore, compensation algorithms were used in impulse response measurements in presence of Heating, Ventilation and Air Conditioning noise. The study shows, in a preliminary way, how different techniques and equipment can influence intelligibility criteria used in the open-plan office characterization. Results show that the indirect method of measuring Speech Transmission Index could not be used when the background level is high as the case study while the direct method returns good results.

scholarly journals Characterization of natural gas by Raman spectroscopy and its application for in-situ measurements

2018 ◽  
Vol 35 (1) ◽  
pp. 125
Author(s):  
Karol M. Dąbrowski ◽  
Szymon Kuczyński ◽  
Tomasz Włodek ◽  
Rafał Smulski ◽  
Jan Barbacki
Keyword(s):  
Raman Spectroscopy ◽  
Natural Gas ◽  
In Situ Measurements
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