CONCENTRATION OF PM1 IN DIFFERENT TYPES OF INDOOR ENVIRONMENT

2001 ◽  
Vol 32 ◽  
pp. 781-782
Author(s):  
P. REZACOVA ◽  
M. BRANIS
Keyword(s):  
Indoor Environment ◽  
Different Types

scholarly journals Green envelope as an architectural strategy for energy efficiency in a library building

2019 ◽  
Vol 266 ◽  
pp. 01004 ◽  
Author(s):  
Azlan Ariff Ali Ariff ◽  
Sabarinah Sheikh Ahmad ◽  
Mohd Aljefri Hussin
Keyword(s):  
Energy Consumption ◽  
Indoor Environment ◽  
Building Simulation ◽  
Treatment Results ◽  
Building Information Modelling ◽  
Design Alternatives ◽  
Different Types ◽  
Building Information ◽  
Reduction Of Energy Consumption ◽  
Envelope Functions

In the context of Malaysian tropical climate, green envelope functions to provide satisfying indoor environment and achieve the best performance with minimal energy consumption. Buildings that rely on air-conditioning to improve thermal comfort could benefit from green envelope potentials. Hence, the objective of this paper is to explore the impacts of various types of green envelope towards reducing the energy consumption of a two-storey library building. The methodology approach is quantitative and data are collected through building simulation using Revit Building Information Modelling (BIM). Parameters studied are building orientation, wall insulation, envelope materials, and façade treatment. Results showed that different types of green envelope posed different impact on energy consumption of the library and double glazed windows contribute the most significant reduction of energy consumption. The study establishes the contribution of green envelope and advocates the use of building simulation as research methodology, as it helps to improve envelope design, and to predict the possible outcomes of design alternatives.

scholarly journals Comparative Analysis on the Effects of Natural & Artificial Indoors Lighting on the Learning and Interactive Process

2021 ◽  
Vol 16 ◽  
pp. 121-127
Author(s):  
Mostafa M. E. F. Shams ◽  
Hosam Abd El-Aziz Amr ◽  
Rania Rushdy Moussa
Keyword(s):  
Comparative Analysis ◽  
Negative Feedback ◽  
Indoor Environment ◽  
Building Design ◽  
Learning Spaces ◽  
Interactive Process ◽  
Natural Lighting ◽  
Different Types ◽  
Indoor Lighting

Schools and universities are the main spaces for learning, in which he building design can easily affect the learning and interactive process where indoor environment should be considered carefully when designing these learning spaces. One of the most important factors considered is lighting. The aim of this research is to investigate the effect of different types of indoor lighting on the learning and interactive process. In this research, The indoors lighting efficacy in two different types of educational places were tested in a quantitative way in addition to users survey for these places to test their satisfaction with the current indoor lighting quality which results that the users prefers natural lighting although it got negative feedback due to inconsistency. Finally, this research gives some recommendations for the usage of the indoors lighting to further enhance the learning and interactive process

scholarly journals Monocular Vision-Based Robot Localization and Target Tracking

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Bing-Fei Wu ◽  
Wang-Chuan Lu ◽  
Cheng-Lung Jen
Keyword(s):  
Unmanned Aerial Vehicles ◽  
High Speed ◽  
Indoor Environment ◽  
Image Sequences ◽  
Robot Motion ◽  
Single Camera ◽  
Robot Localization ◽  
Motion Model ◽  
Different Types ◽  
Target Locations

This paper presents a vision-based technology for localizing targets in 3D environment. It is achieved by the combination of different types of sensors including optical wheel encoders, an electrical compass, and visual observations with a single camera. Based on the robot motion model and image sequences, extended Kalman filter is applied to estimate target locations and the robot pose simultaneously. The proposed localization system is applicable in practice because it is not necessary to have the initializing setting regarding starting the system from artificial landmarks of known size. The technique is especially suitable for navigation and target tracing for an indoor robot and has a high potential extension to surveillance and monitoring for Unmanned Aerial Vehicles with aerial odometry sensors. The experimental results present “cm” level accuracy of the localization of the targets in indoor environment under a high-speed robot movement.

scholarly journals ROUGHNESS CHARACTERIZATION OF AN INDOOR ENVIRONMENT

2011 ◽  
Vol 20 (3) ◽  
pp. 225 ◽  
Author(s):  
Nisrine Douiri ◽  
Majdi Khoudeir ◽  
Christian Olivier
Keyword(s):  
Frequency Analysis ◽  
Indoor Environment ◽  
Image Space ◽  
Level Surface ◽  
60 Ghz ◽  
Original Image ◽  
Grey Level ◽  
Different Types

For a transmission at 60 GHz inside the buildings, the models of propagation currently developed do not take into account the 3D roughness of surfaces under consideration. In this paper, we deal with the evaluation of the 3D roughness of surfaces in this kind of environment. An indoor environment includes different types of surfaces but the most representative of 3D roughness are walls, ceiling and floor. We propose a method to characterise the 3D roughness of these surfaces by constructing an image space made up of the original image, the image of gradient, the image of curvature and the image of the angles between the perpendicular to the grey level surface and the perpendicular to the whole image. The method we have developed is based, first, on the study of correlation variations of our image space, and second on a frequency analysis of the angle image histograms. The elaborated criteria allowed us to classify the surfaces studied.

scholarly journals Parametric Analysis of Buildings’ Heat Load Depending on Glazing—Hungarian Case Study

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3291 ◽  
Author(s):  
Gábor L. Szabó ◽  
Ferenc Kalmár
Keyword(s):  
Heat Load ◽  
Indoor Environment ◽  
Fossil Fuels ◽  
Heat Waves ◽  
Surface Cooling ◽  
Different Types ◽  
Hungarian Case ◽  
Load Analysis

The share of cooling is rising in the energy balance of buildings. The reason is for increasing occupants’ comfort needs, which is accentuated by the fact that the number and the amplitude of heat waves are increasing. The comfortable and healthy indoor environment should to be realized with the minimum amount of energy and fossil fuels. In order to meet this goal, designers should know the effect of different parameters on the buildings’ energy consumption. The energy need for cooling is mainly influenced by the glazed ratio and orientation of the facades, the quality of glazing and shading. In this paper the heat load analysis was done by assuming different types of summer days and surface cooling, depending on the glazing ratio, shading factor and solar factor of glazing. It was proven that, for a certain parameter, the sensitivity of the heat load depends on the orientation and chosen summer day. If the glazing area is doubled, the heat load increases with about 30%. Decreasing the glazed area to 50%, the heat load decreases with about 10%. The heat load decreases with about 3% if the g factor is lowered with 25% or the shading factor is reduced with 60%.

scholarly journals Microbial contamination screening and interpretation for biological laboratory environments

2018 ◽  
Author(s):  
Xi Li ◽  
Xue Zhu ◽  
Wenjie Wang ◽  
Kang Ning
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Indoor Environment ◽  
Sampling Site ◽  
Microbial Community Composition ◽  
The Public ◽  
Different Types ◽  
Public Areas ◽  
Microbial Contaminants ◽  
Potential Impact

AbstractAdvances in microbiome researches have led us to the realization that the composition of microbial communities of indoor environment is profoundly affected by the function of buildings, and in turn may bring detrimental effects to the indoor environment and the occupants. Thus investigation is warranted for a deeper understanding of the potential impact of the indoor microbial communities. Among these environments, the biological laboratories stand out because they are relatively clean and yet are highly susceptible to microbial contaminants. In this study, we assessed the microbial compositions of samples from the surfaces of various sites across different types of biological laboratories. We have qualitatively and quantitatively assessed these possible microbial contaminants, and found distinct differences in their microbial community composition. We also found that the type of laboratories has a larger influence than the sampling site in shaping the microbial community, in terms of both structure and richness. On the other hand, the public areas of the different types of laboratories share very similar sets of microbes. Tracing the main sources of these microbes, we identified both environmental and human factors that are important factors in shaping the diversity and dynamics of these possible microbial contaminations in biological laboratories. These possible microbial contaminants that we have identified will be helpful for people who aim to eliminate them from samples.ImportanceMicrobial communities from biological laboratories might hamper the conduction of molecular biology experiments, yet these possible contaminations are not yet carefully investigated. In this work, a metagenomic approach has been applied to identify the possible microbial contaminants and their sources, from the surfaces of various sites across different types of biological laboratories. We have found distinct differences in their microbial community compositions. We have also identified the main sources of these microbes, as well as important factors in shaping the diversity and dynamics of these possible microbial contaminations. The identification and interpretation of these possible microbial contaminants in biological laboratories would be helpful for alleviate their potential detrimental effects.

The extinction time of a general birth and death process with catastrophes

1986 ◽  
Vol 23 (04) ◽  
pp. 851-858 ◽  
Author(s):  
P. J. Brockwell
Keyword(s):  
Laplace Transform ◽  
Size Distribution ◽  
Sufficient Conditions ◽  
Necessary And Sufficient Conditions ◽  
Death Process ◽  
Extinction Time ◽  
Birth And Death Process ◽  
Different Types ◽  
The Laplace Transform ◽  
Necessary And Sufficient

The Laplace transform of the extinction time is determined for a general birth and death process with arbitrary catastrophe rate and catastrophe size distribution. It is assumed only that the birth rates satisfyλ0= 0,λj> 0 for eachj> 0, and. Necessary and sufficient conditions for certain extinction of the population are derived. The results are applied to the linear birth and death process (λj=jλ, µj=jμ) with catastrophes of several different types.

Differentiating between different forms of moral obligations

2020 ◽  
Vol 43 ◽  
Author(s):  
Rajen A. Anderson ◽  
Benjamin C. Ruisch ◽  
David A. Pizarro
Keyword(s):  
Moral Character ◽  
Moral Obligations ◽  
Different Types

Abstract We argue that Tomasello's account overlooks important psychological distinctions between how humans judge different types of moral obligations, such as prescriptive obligations (i.e., what one should do) and proscriptive obligations (i.e., what one should not do). Specifically, evaluating these different types of obligations rests on different psychological inputs and has distinct downstream consequences for judgments of moral character.

Ultrastructural Investigations of the Contractile Filaments of Amoebae

1974 ◽  
Vol 32 ◽  
pp. 188-189
Author(s):  
P.L. Moore
Keyword(s):  
Cytoplasmic Streaming ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Amoeboid Movement ◽  
Different Types ◽  
Chemical Conditions ◽  
Complete Interpretation

Previous freeze fracture results on the intact giant, amoeba Chaos carolinensis indicated the presence of a fibrillar arrangement of filaments within the cytoplasm. A complete interpretation of the three dimensional ultrastructure of these structures, and their possible role in amoeboid movement was not possible, since comparable results could not be obtained with conventional fixation of intact amoebae. Progress in interpreting the freeze fracture images of amoebae required a more thorough understanding of the different types of filaments present in amoebae, and of the ways in which they could be organized while remaining functional.The recent development of a calcium sensitive, demembranated, amoeboid model of Chaos carolinensis has made it possible to achieve a better understanding of such functional arrangements of amoeboid filaments. In these models the motility of demembranated cytoplasm can be controlled in vitro, and the chemical conditions necessary for contractility, and cytoplasmic streaming can be investigated. It is clear from these studies that “fibrils” exist in amoeboid models, and that they are capable of contracting along their length under conditions similar to those which cause contraction in vertebrate muscles.

Study of the Molecular Architecture of Keratin Filaments by Electron Microscopy

1982 ◽  
Vol 40 ◽  
pp. 118-119
Author(s):  
U. Aebi ◽  
P. Rew ◽  
T.-T. Sun
Keyword(s):  
Electron Microscopy ◽  
Structural Organization ◽  
Cell Types ◽  
Structural Features ◽  
Molecular Architecture ◽  
The Past ◽  
Keratin Filaments ◽  
Different Types ◽  
10 Nm Filaments ◽  
Different Cell Types

Various types of intermediate-sized (10-nm) filaments have been found and described in many different cell types during the past few years. Despite the differences in the chemical composition among the different types of filaments, they all yield common structural features: they are usually up to several microns long and have a diameter of 7 to 10 nm; there is evidence that they are made of several 2 to 3.5 nm wide protofilaments which are helically wound around each other; the secondary structure of the polypeptides constituting the filaments is rich in ∞-helix. However a detailed description of their structural organization is lacking to date.

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