cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.20027393
title: Method to capture and prioritize future users requirements of low-income housing

description: Abstract In construction, product value, from an end user's perspective, consists of complex choices between many positive and negative attributes. Moreover, there is a lack of methods that reduce the gap between received and intended value by the user. Thus, this research aims to propose a method to capture and prioritize end user requirements, to subsidize the conception and design phases of low-income housing projects, based on a case study carried out in the Minha Casa Minha Vida - Entidades Program (Brazil), using Design Science Research as the research method. The research was divided into three phases, in addition to a literature review. Firstly, in the Exploratory Phase, the Choice-based Conjoint Analysis Technique was adapted to the research context. Secondly, the Development Phase consisted of three steps: (a) user requirements’ capture; (b) requirements’ hierarchy and prioritization; and (c) relationship between Preference Models and end user families of further housing projects. Thirdly, in the Analysis and Reflection Phase, a method for capturing and prioritizing end user requirements was devised, aimed to help the conception and design process of low-income housing projects.
DOI: 10.6084/m9.figshare.20027393.v1
title: Method to capture and prioritize future users requirements of low-income housing

description: Abstract In construction, product value, from an end user's perspective, consists of complex choices between many positive and negative attributes. Moreover, there is a lack of methods that reduce the gap between received and intended value by the user. Thus, this research aims to propose a method to capture and prioritize end user requirements, to subsidize the conception and design phases of low-income housing projects, based on a case study carried out in the Minha Casa Minha Vida - Entidades Program (Brazil), using Design Science Research as the research method. The research was divided into three phases, in addition to a literature review. Firstly, in the Exploratory Phase, the Choice-based Conjoint Analysis Technique was adapted to the research context. Secondly, the Development Phase consisted of three steps: (a) user requirements’ capture; (b) requirements’ hierarchy and prioritization; and (c) relationship between Preference Models and end user families of further housing projects. Thirdly, in the Analysis and Reflection Phase, a method for capturing and prioritizing end user requirements was devised, aimed to help the conception and design process of low-income housing projects.
DOI: 10.5281/zenodo.6624055
title: Kryptolebias gracilis decontaminated gx

description: .
DOI: 10.5281/zenodo.6624054
title: Kryptolebias gracilis decontaminated gx

description: .
DOI: 10.6084/m9.figshare.20027409
title: Effects of termal treatment on the physical properties of Buchenavia sp. (branquilho) wood

description: Abstract This work aimed to evaluate the effect of heat treatment on the physical properties of wood from Buchenavia sp. The heat treatments were carried out at temperatures of 180 °C and 200 °C for 2 h. Apparent density (AD), basic density (BD), porosity (Ф), mass loss, longitudinal (LS), radial (RS), tangential (TS) and volumetric (VS) shrinkages and anisotropic factor (AF) were determined. The lowest values of basic density (0.67 g cm-3), apparent density (0.77 gcm-3), and porosity (43.3%) were observed for the wood treated at a temperature of 200 °C. Mass losses increased with increasing temperature and the highest values were observed under the condition of 200 °C (9.3%). The LS and AF was not affected by heat treatments. The mean values for RS (3.1%), TS (5.1%), and VS (9.1%) were reduced after the performance of heat treatments at temperatures of 180°C and 200°C, which did not differ from each other. The thermal treatments were able to reduce the dimensional instability of Buchenavia sp. Thermal treatments enhance the use of less prestigious Amazonian woods in the civil construction market.
DOI: 10.5517/ccdc.csd.cc29xwkp
title: CCDC 2142923: Experimental Crystal Structure Determination

description: Related Article: Lixia Chen|2022|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.6084/m9.figshare.20027408
title: Behavior patterns in operations of lighting and air conditioning systems in commercial buildings

description: Abstract Occupant behavior is one of the main reasons to bridge the gap between predicted and actual energy consumption. The paper identifies and categorizes the existing usage patterns in operation of lighting systems and air conditioning in a commercial building. A questionnaire survey was applied in Londrina, Paraná, in a commercial building with facades constituted by glasses in which the low solar factor, flexible layout, central core and mixed ventilation. The data was collected through interviews with 100 users, approaching 72 influence factors in systems’ operation. Using the cluster analysis method five patterns were identified, presenting differences mainly when it comes to the frequency of use of the natural ventilation and blinds. Pearson's chi-square and Kruskal-Wallis statistical tests were applied and identified this was influenced mainly by contextual aspects and design decisions such as exposure to solar radiation, preferences, habits, nearness to windows and work activity. Besides that, the overage of glass areas in the east facade resulted in a 20% more use of air-conditioning. This way, the actions of the users are heterogeneous, not being possible to represent them in a unique pattern behavior.
DOI: 10.6084/m9.figshare.20027408.v1
title: Behavior patterns in operations of lighting and air conditioning systems in commercial buildings

description: Abstract Occupant behavior is one of the main reasons to bridge the gap between predicted and actual energy consumption. The paper identifies and categorizes the existing usage patterns in operation of lighting systems and air conditioning in a commercial building. A questionnaire survey was applied in Londrina, Paraná, in a commercial building with facades constituted by glasses in which the low solar factor, flexible layout, central core and mixed ventilation. The data was collected through interviews with 100 users, approaching 72 influence factors in systems’ operation. Using the cluster analysis method five patterns were identified, presenting differences mainly when it comes to the frequency of use of the natural ventilation and blinds. Pearson's chi-square and Kruskal-Wallis statistical tests were applied and identified this was influenced mainly by contextual aspects and design decisions such as exposure to solar radiation, preferences, habits, nearness to windows and work activity. Besides that, the overage of glass areas in the east facade resulted in a 20% more use of air-conditioning. This way, the actions of the users are heterogeneous, not being possible to represent them in a unique pattern behavior.
DOI: 10.5517/ccdc.csd.cc2b6nhq
title: CCDC 2151353: Experimental Crystal Structure Determination

description: Related Article: Isabel Cordeiro Santos, Leonor Maria|2022|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc29g6dd
title: CCDC 2128813: Experimental Crystal Structure Determination

description: Related Article: Chenghao Li, Wei-Fang Zuo, Jin Zhou, Wu-Jingyun Zhou, Meng Wang, Xiang Li, Gu Zhan, Wei Huang|2022|Org.Chem.Front.|9|1808|doi:10.1039/D2QO00021K
description: Related Article: Chenghao Li, Wei-Fang Zuo, Jin Zhou, Wu-Jingyun Zhou, Meng Wang, Xiang Li, Gu Zhan, Wei Huang|2022|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc21fkbd
title: CCDC 1889863: Experimental Crystal Structure Determination

description: Related Article: Jinxin Wang|2022|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2b8xl4
title: CCDC 2153526: Experimental Crystal Structure Determination

description: Related Article: Huarui Wang|2022|CSD Communication|||
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.6084/m9.figshare.20027411
title: Analysis of creep under compression on impact noise insulation of cementitious plates with EVA waste

description: Abstract Impact noise in multi-floor buildings is reduced with the execution of a floating floor, which has a resilient material between the subfloor and the slab. In this study, the evaluation of the influence of compression of this material on the acoustic performance of the system was sought. Two resilient materials were compared, one being produced in the laboratory (cementitious plates with EVA - PEVA1,8 waste), and the other commercially (blanket recycled from PET waste - MantaPET). The measurements aiming to relate the dynamic stiffness of the materials and the acoustic performance were up to three years. Additionally, estimates were made for ten years, based on theoretical models and creep compression tests. While PEVA1,8 decreased its dynamic stiffness (20.0 MN/m³ to 17.7 MN/m³) over time, MantaPET increased (2.0 MN/m³ to 3.5 MN/m³), but both maintained intermediate performance (according to NBR 15575-3:2013) to impact noise, presenting L’ nT,w equal to 60 dB and 56 dB in a test floor, respectively. Estimates for ten years indicated less deformation for PEVA1,8 (3.42%), compared to MantaPET (20.15%) and confirmed the trend of changes in the dynamic stiffness, without compromising the acoustic performance of these materials.
DOI: 10.6084/m9.figshare.20027411.v1
title: Analysis of creep under compression on impact noise insulation of cementitious plates with EVA waste

description: Abstract Impact noise in multi-floor buildings is reduced with the execution of a floating floor, which has a resilient material between the subfloor and the slab. In this study, the evaluation of the influence of compression of this material on the acoustic performance of the system was sought. Two resilient materials were compared, one being produced in the laboratory (cementitious plates with EVA - PEVA1,8 waste), and the other commercially (blanket recycled from PET waste - MantaPET). The measurements aiming to relate the dynamic stiffness of the materials and the acoustic performance were up to three years. Additionally, estimates were made for ten years, based on theoretical models and creep compression tests. While PEVA1,8 decreased its dynamic stiffness (20.0 MN/m³ to 17.7 MN/m³) over time, MantaPET increased (2.0 MN/m³ to 3.5 MN/m³), but both maintained intermediate performance (according to NBR 15575-3:2013) to impact noise, presenting L’ nT,w equal to 60 dB and 56 dB in a test floor, respectively. Estimates for ten years indicated less deformation for PEVA1,8 (3.42%), compared to MantaPET (20.15%) and confirmed the trend of changes in the dynamic stiffness, without compromising the acoustic performance of these materials.
DOI: 10.6084/m9.figshare.20027414
title: Representativeness analysis and apparent density as estimators of modulus of elasticity of class C60 of NBR7190:1997

description: Abstract For correct dimensioningof wood structures, the premises of the Brazilian standard are extremely valuable as a guide for structural engineers, as it exhibits standard values of resistance. Thus, this study aims to analyze whether the value of the class C60 elasticity module shown in the Brazilian standard matches the values obtained in the test of 23 Brazilian species, using the Bootstrap methodology with 1 million simulations. In addition, it sought to analyze, with regression models, whether it is possible to estimate this rigidity property (E c0 ) of these 23 species as a function of apparent density. Finally, it was possible to conclude that the Brazilian standard overestimates the modulus of elasticity of Brazilian woods, presenting a value almost 35% higher than what actually resists, showing that the standard needs to be revised. Another point was that the regression models do not show significance, in other words, with the apparent density it was not possible to estimate the analyzed rigidity property.
DOI: 10.6084/m9.figshare.20027414.v1
title: Representativeness analysis and apparent density as estimators of modulus of elasticity of class C60 of NBR7190:1997

description: Abstract For correct dimensioningof wood structures, the premises of the Brazilian standard are extremely valuable as a guide for structural engineers, as it exhibits standard values of resistance. Thus, this study aims to analyze whether the value of the class C60 elasticity module shown in the Brazilian standard matches the values obtained in the test of 23 Brazilian species, using the Bootstrap methodology with 1 million simulations. In addition, it sought to analyze, with regression models, whether it is possible to estimate this rigidity property (E c0 ) of these 23 species as a function of apparent density. Finally, it was possible to conclude that the Brazilian standard overestimates the modulus of elasticity of Brazilian woods, presenting a value almost 35% higher than what actually resists, showing that the standard needs to be revised. Another point was that the regression models do not show significance, in other words, with the apparent density it was not possible to estimate the analyzed rigidity property.
DOI: 10.6084/m9.figshare.20027412
title: Impact noise isolation of prefabricated ribbed slab with prestressed joist and ceramic block

description: Abstract Impact noise is one of the main discomfort factors among users of multi-storey buildings. Thus, this research seeks to: determine the acoustic properties of insulation against impact noise in the prefabricated ribbed slab system, composed of prestressed joists and ceramic blocks in three montage compositions, evaluate the performance of insulation against impact noise of the technique on floating floor over the slab, using fifteen different resilient materials, and compare the results obtained for the various compositions with the Brazilian criteria of performance standard 15575-3:2013. The tests were carried out in the UFSM laboratory, in accordance with ISO 140-7 parameters updated to ISO 16283-2:2020, and ISO 717-2:2020, to determine the weighted standard impact sound pressure level ( L' nT,w ) of each composition tested. It can be concluded that the constructive typology, with a 4 cm subfloor and ceramic coating, needs acoustic treatment to fit the Brazilian regulations, and that the use of the floating floor technique is a good solution, since the great majority compositions with resilient materials reach an intermediate level of the standard between 56 and 65 dB.
DOI: 10.6084/m9.figshare.20027412.v1
title: Impact noise isolation of prefabricated ribbed slab with prestressed joist and ceramic block

description: Abstract Impact noise is one of the main discomfort factors among users of multi-storey buildings. Thus, this research seeks to: determine the acoustic properties of insulation against impact noise in the prefabricated ribbed slab system, composed of prestressed joists and ceramic blocks in three montage compositions, evaluate the performance of insulation against impact noise of the technique on floating floor over the slab, using fifteen different resilient materials, and compare the results obtained for the various compositions with the Brazilian criteria of performance standard 15575-3:2013. The tests were carried out in the UFSM laboratory, in accordance with ISO 140-7 parameters updated to ISO 16283-2:2020, and ISO 717-2:2020, to determine the weighted standard impact sound pressure level ( L' nT,w ) of each composition tested. It can be concluded that the constructive typology, with a 4 cm subfloor and ceramic coating, needs acoustic treatment to fit the Brazilian regulations, and that the use of the floating floor technique is a good solution, since the great majority compositions with resilient materials reach an intermediate level of the standard between 56 and 65 dB.
DOI: 10.6084/m9.figshare.20027415
title: Durability, life cycle cost and life cycle assessment of binary mixtures with fly ash, rice husk ash and concrete demolition waste

description: Abstract This study analyses, by means of lifespan cost and lifespan assessment, the production of binary concrete admixtures compound by artificial pozzolan and concrete demolition waste. Ten formulations were developed, differentiating them in terms of mixtures, binder and aggregate content, in order to verify their potential use in concrete columns. The replacements were 25% of Portland cement for fly ash and rice husk ash, 15% and 30% of natural coarse aggregates for concrete demolition waste. The results revealed that the mixtures with pozzolan and demolition waste showed higher resistance to chloride penetration. The lowest concrete cost was achieved in the highest compressive strength (35 MPa) and the concrete admixture containing 15% replacement of the natural coarse aggregate by the recycled concrete aggregate and 25% substitution of cement by rice husk ash can be classified as the most environmentally sustainable one, especially in carbon dioxide emissions, among the mixtures studied.
DOI: 10.6084/m9.figshare.20027415.v1
title: Durability, life cycle cost and life cycle assessment of binary mixtures with fly ash, rice husk ash and concrete demolition waste

description: Abstract This study analyses, by means of lifespan cost and lifespan assessment, the production of binary concrete admixtures compound by artificial pozzolan and concrete demolition waste. Ten formulations were developed, differentiating them in terms of mixtures, binder and aggregate content, in order to verify their potential use in concrete columns. The replacements were 25% of Portland cement for fly ash and rice husk ash, 15% and 30% of natural coarse aggregates for concrete demolition waste. The results revealed that the mixtures with pozzolan and demolition waste showed higher resistance to chloride penetration. The lowest concrete cost was achieved in the highest compressive strength (35 MPa) and the concrete admixture containing 15% replacement of the natural coarse aggregate by the recycled concrete aggregate and 25% substitution of cement by rice husk ash can be classified as the most environmentally sustainable one, especially in carbon dioxide emissions, among the mixtures studied.
DOI: 10.6084/m9.figshare.20027417
title: The influence of cellulose microfibers in on the fresh state of mortars

description: Abstract New technology, such as cellulose microfiber addition, can improve the performance of fresh mortars moret due to the the fibers’ hydrophilic characteristics. However, the additions’ physical and chemical characteristics, such as the ratio used in the mix, should be controlled to keep the mortars’ behavior suitable. The aim of this work is to evaluate the influence of cellulose microfibers on mortars air ratio, water retention and rheology. Three types of microfibers with three different ratios were used in this research. The results showed that the additions modified the materials’ characteristics and, for these reasons, it should have a limit of microfiber insertion, and, it is important to analyze its characteristics in to attempt the ideal development of each mortar application.
DOI: 10.6084/m9.figshare.20027417.v1
title: The influence of cellulose microfibers in on the fresh state of mortars

description: Abstract New technology, such as cellulose microfiber addition, can improve the performance of fresh mortars moret due to the the fibers’ hydrophilic characteristics. However, the additions’ physical and chemical characteristics, such as the ratio used in the mix, should be controlled to keep the mortars’ behavior suitable. The aim of this work is to evaluate the influence of cellulose microfibers on mortars air ratio, water retention and rheology. Three types of microfibers with three different ratios were used in this research. The results showed that the additions modified the materials’ characteristics and, for these reasons, it should have a limit of microfiber insertion, and, it is important to analyze its characteristics in to attempt the ideal development of each mortar application.
DOI: 10.6084/m9.figshare.20027418
title: Production of mahogany particleboards using branches and wood residues

description: Abstract Mahogany (Swietenia macrophylla King) is one of the most valuable wood species found in the American Continent. This study is an evaluation of the production of particleboards using wood residues from the branches and trunk of a mahogany tree. It was designed to test the feasibility of production and the mechanical and physical characteristics of the finished particleboards, as well as to compare the results with similar studies and the requirements of normative documents. The particles were generated from the trunk and branches of a mahogany tree separately and mixed in different proportions to test their influence on the final product. They were bonded using 12% polyurethane resin from renewable resources and pressed under 90º C and 3.5 MPa for 10 minutes. The specimens were prepared and tested according to the guidelines established by the NBR 14810 regarding the static bending, internal bond, stiffness and thickness swelling (24h) tests. The results indicated that there is no significant correlation between the trunk-branches proportion and the Modulus of Elasticity/Rupture values. The production of the particleboards using the residues is feasible and the results of most of the tests fitted the normative requirements, which means that with the refinement of the production process it is possible to have a good product that fully complies with the technical standards.