Trends of Outdoor Thermal Discomfort in Mymensingh: an Application of Thoms’ Discomfort index

2018 ◽  
Vol 10 (2) ◽  
pp. 151-156 ◽  
Author(s):  
MSJ Talukdar ◽  
MS Hossen ◽  
MA Baten
Keyword(s):  
Risk Assessment ◽  
Natural Resources ◽  
Thermal Comfort ◽  
Air Temperature ◽  
The Other ◽  
Thermal Discomfort ◽  
Other Hand ◽  
Discomfort Index

Thermal comfort is considered very important in aspects of risk assessment, summertime morbidity or in building designing. The present study applied Thom’s discomfort index (DI) to assess the trend of outdoor thermal discomfort in Mymensingh City during 2006-2015. It wasfound that December to February months was comparatively comfortable, DI values were typically <21 and therefore no people felt any discomfort in these months. On the other hand, under 50% population experienced discomfort during March and November months when discomfort valueswere ranged between 21- 24. From April to October months discomfort values varied from 25-27, which indicated thatover 50% population suffered from discomfort in this period. Though no extreme discomfort condition observed in Mymensingh city, the results revealed from June to September months most of the population suffered from severe discomfort in Mymensingh city due to the high air temperature, and high relative humidity.J. Environ. Sci. & Natural Resources, 10(2): 151-156 2017

The Study of Thermal Comfort and Noise Level in Battery Plate Factory

2014 ◽  
Vol 663 ◽  
pp. 474-479
Author(s):  
Mohd Anas Mohd Sabri ◽  
Mohd Faizal Mat Tahir ◽  
Kamaruzaman Sopian ◽  
Muhammad Hadi Zabidi Rosdi
Keyword(s):  
Relative Humidity ◽  
Metabolic Rate ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Noise Level ◽  
Comfort Level ◽  
The Other ◽  
Air Velocity ◽  
Other Hand ◽  
Radiant Temperature

The successful of manufacturing factories in industry is highly dependent on a productivity of their employees especially operators. It was identified that comfort and noise level can reduce the productivity of their workers. This study is to determine the level of thermal and noise comfort in the battery plate factory. This study was conducted in three days and location of the study is at battery plate factory in Semenyih, Selangor, Malaysia. The scope of study is focused at plate manufacturing area where the employee estimated 40 persons. The thermal comfort level can be determined by calculating PMV and PPD. This study involved six factors of comfort which is air temperature, average radiant temperature, air velocity, relative humidity, metabolic rate and clothes insulation. Then the study of noise level was conducted by determining LAeq, T, Lmax and Lmin. To carry out this study, Babuc-A equipment were used. The analysis show the area of the manufacturing battery plate having a discomfort condition and PMV result is between 1.5 until 3. Air temperature on the other hand is between 27.4°C-37.8°C while relative humidity is between range 35.35% -92.1% and air velocity 0 m/s-1.28 m/s. Meanwhile the LAeq,T value in the factory is varied from 68 to 80 dB.

scholarly journals Adult caddisflies (Trichoptera) attracted to artificial lights in the middle reaches of the Shinano River from 2005 to 2007

Zoosymposia ◽  
2011 ◽  
Vol 5 (1) ◽  
pp. 143-146 ◽  
Author(s):  
KIMIO HIRABAYASHI ◽  
GORO KIMURA ◽  
EISO INOUE
Keyword(s):  
Species Composition ◽  
Air Temperature ◽  
Large Scale ◽  
Abundant Species ◽  
The Other ◽  
Seasonal Abundance ◽  
Other Hand ◽  
The Mean ◽  
Summer Flood

The species composition and abundance of adult caddisflies attracted to the illuminated showcase of a vending machine set along the middle reaches of the Shinano River were investigated every Sunday night from April to November in 2005 to 2007. A total of 1,405 adult caddisflies was collected during the investigation periods. We identified a total of 13 species belonging to 11 genera of 8 families. The most abundant species was Psychomyia acutipennis (Ulmer 1908) each year. Psychomyia acutipennis adults were collected from mid-May to the beginning of October (the range of mean air temperature was 13.8 to 27.7°C), with its seasonal abundance divided into several peaks, i.e., the end of May, the beginning of June, and the end of August to the beginning of September in both 2006 and 2007. On the other hand, in 2005 when there was no large-scale summer flood and there were no marked abundance peaks. The present study suggests that the mean air temperature and summer floods impacted the seasonal abundance of P. acutipennis adults.

scholarly journals Climatic characteristics of summer human thermal discomfort in Athens and its connection to atmospheric circulation

2013 ◽  
Vol 13 (12) ◽  
pp. 3271-3279 ◽  
Author(s):  
A. Bartzokas ◽  
C. J. Lolis ◽  
P. A. Kassomenos ◽  
G. R. McGregor
Keyword(s):  
Pressure Gradient ◽  
Atmospheric Circulation ◽  
Aegean Sea ◽  
The Other ◽  
Thermal Discomfort ◽  
Circulation Types ◽  
Light Wind ◽  
Discomfort Index ◽  
Climatic Characteristics ◽  
Weather Characteristics

Abstract. The climate characteristics of summer human thermal discomfort in Athens and its connection to atmospheric circulation are studied for the period 1954–2012. The human thermal discomfort is examined in terms of the Predicted Mean Vote (PMV) discomfort index for calm and light wind (3 ms-1) conditions. Its inter-annual variability is characterised by a significant increase from the middle 1980s to the end of the study period. The onset and the cessation of the discomfort period are found to take place around the beginning of July and the end of August respectively, but from middle 1980s the dates of onset and cessation have slightly moved earlier and later, respectively, leading to a longer summer discomfort period. The connection between human thermal discomfort and atmospheric circulation is studied by examining the distribution of discomfort cases across six objectively defined circulation types over Europe, based on Athens weather characteristics. High values of the PMV discomfort index are mainly associated with two typical high-summer pressure patterns with the intensity of discomfort depending on the pressure gradient over the Aegean Sea. On the contrary, low PMV discomfort index values prevail mainly on days typified by the other four circulation types, which are more frequent during May, June, and September.

Optimal Minimum Airflow for Air Circulation of Single-Duct VAV Terminal Boxes

2008 ◽  
Author(s):  
Young-Hum Cho ◽  
Mingsheng Liu
Keyword(s):  
Thermal Comfort ◽  
Air Temperature ◽  
Thermal Discomfort ◽  
Variable Air Volume ◽  
Air Handling Unit ◽  
Optimal Value ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations ◽  
Air Circulation ◽  
The Impact

Thermal comfort in an area is directly controlled by terminal boxes in variable air volume (VAV) air-handling unit (AHU) systems. The terminal box either modulates airflow or adjusts the discharge air temperature. Reduced air circulation will cause thermal discomfort in a conditioned space if the airflow and discharge air temperature are not suitable. The objective of this study is to identify an optimal value for airflow and discharge air temperature that will maintain room thermal comfort. Optimal room airflow and discharge air temperature is analyzed, and the impact of room airflow and discharge air temperature on thermal stratification is verified through CFD (Computational Fluid Dynamics) simulations.

scholarly journals Constitutional protection of the environment with particular regard to the Hungarian, German, Italian and Belgian constitutional regulation

2021 ◽  
Vol 16 (31) ◽  
pp. 99-120
Author(s):  
Flóra Orosz ◽  
Noémi Suri ◽  
Renáta Hrecska-Kovács ◽  
Péter Szőke
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Environmental Protection ◽  
The Other ◽  
Future Generations ◽  
Constitutional Protection ◽  
Other Hand ◽  
The World ◽  
Fundamental Law

Environmental protection has become a burning issue which plays a more and more important role in the world. The aim of this study is to give a picture of the constitutional regulation of environmental protection which is the highest legal source of a nation. Besides the Hungarian Fundamental Law, the German, Italian and Belgian constitutions were examined in the study. On one hand, we looked into how environment is regulated in the constitutions, as a right (right to environment) or a state task or objective (protect the environment). On the other hand, we analysed how related regulatory subjects appear in the constitutions, such as natural resources, future generations and sustainable development.

scholarly journals Investigation of Chemical Parameters and Major Anions of Two Selected Aquaculture Ponds at Santosh Region, Tangail, Bangladesh

2015 ◽  
Vol 7 (2) ◽  
pp. 89-92 ◽  
Author(s):  
F Hossain ◽  
R Afrin ◽  
MY Mia ◽  
MA Akbor ◽  
MA Ahsan
Keyword(s):  
Natural Resources ◽  
Water Sample ◽  
Water Samples ◽  
The Other ◽  
Chemical Parameters ◽  
Other Hand ◽  
Aquaculture Ponds ◽  
Major Anions ◽  
Value Of Water

The study was conducted to analyze the chemical parameters and major anionic contents of water from Taltola and Mullahbari Pond at Santosh, Tangail during the months from January to March 2014. Chemical parameters such as pH, EC, DO, TDS, BOD and Alkalinity of all water samples were ranged from 7.56 to 7.78, 239.7 to 342 ?S/cm, 4.3 to 5.7 mg/L, 123.7 to 175 mg/L, 2.1 to 2.63 mg/L and 87 to 154 ppm, respectively. On the other hand, the anions such as F-, Cl-, NO2-, NO3-, SO4-- were ranged from 0.221 to 3.8, 16 to 24, 2.5 to 3.8, 0.96 to 1.67 and 1.99 to 17.93 mg/L, respectively. In case of Br- the anionic value of water sample was not detectable.DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22213 J. Environ. Sci. & Natural Resources, 7(2): 89-92 2014

scholarly journals PRODUKSI POLONG DAN BIJI TANAMAN GAMAL (Glirisidia sepium) DARI BERBAGAI PROVENANSI DENGAN PEMUPUKAN NPK

PERENNIAL ◽  
2006 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Muh. Restu ◽  
Baharuddin Mappangaja
Keyword(s):  
Natural Resources ◽  
Seed Production ◽  
Forest Productivity ◽  
The Other ◽  
Other Hand ◽  
Average Production ◽  
Biological Reproduction

The productivity of forest natural resources is now decreasing and therefore rehabilitation efforts is urgently needed. Breeding of forest plant is the best solution to increase forest productivity in both quantity and quality. The biological reproduction can be conducted through seed production with fertilization. This research was aimed at determining the effect of fertilizing treatments on pod and seed production of different Glirisidia sepium provenances to find out the best provenance and best fertilizer dosage. Fertilization treatments showed a significant effect on the pod and seed production. On the other hand, the provenance and its interaction with fertilizing did not show any significant effects on the pod and seed production. The best performance was found on the fertilization treatment of 500 g resulting in the average production of 1,288 pods and 27,621 seeds/tree. Keywords: Fertilizing, Seed Production, Provenance, Glirisidia sepium

scholarly journals ANÁLISE DO CONFORTO TÉRMICO HUMANO NO MUNICÍPIO DE ARAPIRACA – ALAGOAS, UTILIZANDO SOFTWARE MATLAB (ANALYSIS OF THE HUMAN THERMAL COMFORT THE CITY OF ARAPIRACA - ALAGOAS USING SOFTWARE MATLAB)

2015 ◽  
Vol 7 (5) ◽  
pp. 939
Author(s):  
Juliete Baraúna dos Santos
Keyword(s):  
Thermal Comfort ◽  
Air Temperature ◽  
Effective Temperature ◽  
Rainy Season ◽  
Prolonged Exposure ◽  
Urban Climate ◽  
Heat Stroke ◽  
Human Thermal Comfort ◽  
Discomfort Index ◽  
The City

Foram obtidas medidas das variáveis meteorológicas temperatura do ar, umidade relativa do ar e velocidade do vento através da estação automática instalada em Arapiraca com a finalidade de monitorar as condições de tempo no município em diferentes períodos (época chuvosa e seca). Sendo utilizado o índice de desconforto (ID), o índice de desconforto de Kawamura (IDK), índice da temperatura efetiva (TE) e o índice de temperatura efetiva em função do vento (TEV). Os valores mais elevados dos índices que foram registrados para o período chuvoso, foram do índice id com aproximadamente 2,5 °C acima dos valores observados da temperatura do ar (em média 26,5 °C), caracterizando crescente desconforto para os indivíduos locais.  Para o período seco não houve registros de grandes variações entre os respectivos índices. E assim como no período chuvoso, os valores mais elevados no período seco foram do índice id, indicando nesse período também forte desconforto. Os valores obtidos estiveram condizentes com a literatura, sendo a sensação térmica mais preponderante durante o inverno. E, de acordo com as variações, em todo período de estudo (05 de maio de 2008 a 05 de maio de 2011) a população foi submetida aos alertas de atenção e muito cuidado, situação esta que pôde provocar fadiga ou cãibras, esgotamento e insolação nos casos de exposição prolongada e atividade física.      A B S T R A C T Measurements of meteorological variables air temperature, relative humidity and wind speed by automatic station installed in Arapiraca in order to monitor the weather conditions in the city in different periods (dry and rainy season) were obtained. Being used the discomfort index (ID), the discomfort index of Kawamura (IDK), index of effective temperature (TE) and the index of effective temperature as a function of wind (TEv). Higher index values ​​that were recorded for the rainy season, the index id were approximately 2.5 ° C above the observed values ​​of air temperature (average 26.5 ° C), indicating increasing discomfort for local individuals . For the dry period there were no reports of large variations between the respective indices. And just as the rainy season, the highest values ​​in the dry season were the index id, indicating that period also strong discomfort. The values ​​obtained were consistent with the literature, the most predominant wind chill during the winter. And, according to the variations in the study period (May 5, 2008 to 05 maio 2011) the population was subjected to warnings of attention and care, a situation that could cause fatigue or cramps, exhaustion and heat stroke in cases of prolonged exposure and physical activity.   Key-Words: Urban climate. Thermal comfort Human. Bioclimatic

scholarly journals Attaining Oil and Gas Sovereignty by Forming Indonesia Incorporate Businesses

2020 ◽  
Vol 4 (1) ◽  
pp. 23
Author(s):  
Yoga Partamayasa ◽  
Rafiqi Anjasmara
Keyword(s):  
Natural Resources ◽  
Oil And Gas ◽  
Legal Reform ◽  
The State ◽  
High Income ◽  
The Other ◽  
The Earth ◽  
Other Hand ◽  
The People ◽  
Very High

<p>Oil and gas are non-renewable types of natural resources. On the other hand, in the current era human dependence on oil and gas is very high. To meet Indonesia's national needs for natural resources, Article 33 of the Indonesian Constitution has mandated that "the earth, water and natural resources contained therein be controlled by the state for the greatest prosperity of the people." But in its development the distribution of welfare over natural resources, especially oil and gas, has not been able to be well distributed in Indonesia. The "Jakarta Sentris" concept is still the basis for distributing natural resources, especially oil and gas. This makes regions that are rich in natural resources not necessarily have prosperous people and not necessarily high-income areas. Therefore, legal reform is needed in the field of oil and gas management by regions in Indonesia.</p>

scholarly journals RISK ASSESSMENT OF AGGREGATE LOSS BY STORM SURGE INUNDATION IN ISE AND MIKAWA BAY

2018 ◽  
pp. 35
Author(s):  
Shota Hirai ◽  
Tomohiro Yasuda
Keyword(s):  
Risk Assessment ◽  
Storm Surge ◽  
Storm Surges ◽  
Insurance Contract ◽  
The Other ◽  
Insurance Company ◽  
Aichi Prefecture ◽  
Other Hand ◽  
Aggregate Loss

In the event of disaster, the risk of disaster are intertwined, and there is an occurrence possibility of simultaneous damage in multiple areas. Nationwide companies have more risks of simultaneous damage in multiple areas by one disaster. For example, factories in Osaka and in Nagoya, can be damaged by one typhoon. In this case, company will need more money when damage happened and better to make special insurance contract, e.g. Catastrophe bond. On the other hand, insurance company has to assess amount of insurance payout because to pay it for contracted companies quickly. Insurance company may have difficulty to estimate total amount since there are few researches assessing aggregate loss caused by coastal disasters. This research proposes a procedure of assessment of aggregate loss by storm surges in Ise and Mikawa Bay located in Aichi prefecture, Japan.

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