scholarly journals Surveillance of work environment and heat stress assessment using meteorological data

2019 ◽  
Vol 63 (2) ◽  
pp. 195-196 ◽  
Author(s):  
Chuansi Gao ◽  
Kalev Kuklane ◽  
Per-Olof Östergren ◽  
Tord Kjellstrom
Keyword(s):  
Heat Stress ◽  
Work Environment ◽  
Meteorological Data ◽  
Stress Assessment

scholarly journals Simulating Heat Stress of Coal Gangue Spontaneous Combustion on Vegetation Using Alfalfa Leaf Water Content Spectral Features as Indicators

2021 ◽  
Vol 13 (13) ◽  
pp. 2634
Author(s):  
Qiyuan Wang ◽  
Yanling Zhao ◽  
Feifei Yang ◽  
Tao Liu ◽  
Wu Xiao ◽  
...  
Keyword(s):  
Heat Stress ◽  
Water Content ◽  
Spontaneous Combustion ◽  
Leaf Water ◽  
Coal Gangue ◽  
Leaf Water Content ◽  
Spectral Features ◽  
Lasso Regression ◽  
Stress Assessment ◽  
First Derivative

Vegetation heat-stress assessment in the reclamation areas of coal gangue dumps is of great significance in controlling spontaneous combustion; through a temperature gradient experiment, we collected leaf spectra and water content data on alfalfa. We then obtained the optimal spectral features of appropriate leaf water content indicators through time series analysis, correlation analysis, and Lasso regression analysis. A spectral feature-based long short-term memory (SF-LSTM) model is proposed to estimate alfalfa’s heat stress level; the live fuel moisture content (LFMC) varies significantly with time and has high regularity. Correlation analysis of the raw spectrum, first-derivative spectrum, spectral reflectance indices, and leaf water content data shows that LFMC and spectral data were the most strongly correlated. Combined with Lasso regression analysis, the optimal spectral features were the first-derivative spectral value at 1661 nm (abbreviated as FDS (1661)), RVI (1525,1771), DVI (1412,740), and NDVI (1447,1803). When the classification strategies were divided into three categories and the time sequence length of the spectral features was set to five consecutive monitoring dates, the SF-LSTM model had the highest accuracy in estimating the heat stress level in alfalfa; the results provide an important theoretical basis and technical support for vegetation heat-stress assessment in coal gangue dump reclamation areas.

scholarly journals Heat stress assessment in artistic glass units

2018 ◽  
Vol 56 (2) ◽  
pp. 171-184 ◽  
Author(s):  
Francesca Romana d’AMBROSIO ALFANO ◽  
Boris Igor PALELLA ◽  
Giuseppe RICCIO ◽  
Massimo BARTALINI ◽  
Fabio STRAMBI ◽  
...  
Keyword(s):  
Heat Stress ◽  
Stress Assessment

scholarly journals Occupational heat stress assessment and protective strategies in the context of climate change

2017 ◽  
Vol 62 (3) ◽  
pp. 359-371 ◽  
Author(s):  
Chuansi Gao ◽  
Kalev Kuklane ◽  
Per-Olof Östergren ◽  
Tord Kjellstrom
Keyword(s):  
Climate Change ◽  
Heat Stress ◽  
Stress Assessment ◽  
Protective Strategies

scholarly journals Análise do conforto térmico para trabalhadores rurais durante a colheita do tabaco na região do Vale do Rio Pardo

2020 ◽  
Vol 42 ◽  
pp. 4
Author(s):  
Heloísa De Gois ◽  
Zanandra Boff de Oliveira ◽  
Clarissa Moraes da Silva ◽  
Irajá Jantasch de Souza ◽  
Larrissa Ribeiro Rodrigues ◽  
...  
Keyword(s):  
Heat Stress ◽  
Thermal Comfort ◽  
Meteorological Data ◽  
The State ◽  
Family Farming ◽  
Rural Workers ◽  
Humidity Index ◽  
Tobacco Cultivation ◽  
Working Day ◽  
Rural Producers

Tobacco cultivation, besides being an important source of income for family farming, also translates into one of the most relevant in the state. Thus, the aim of the present study is to analyze the thermal comfort of rural workers during tobacco harvest, through the temperature and humidity index (UTI) calculated with meteorological data from the years 2017/2018 and 2018/2019, in the Vale region. from Rio Pardo. For this, information was first collected anonymously through a questionnaire answered by 80 rural producers from different municipalities in the region and later, a bioclimatic analysis was performed through the calculation and interpretation of the UTI. The results indicated that the tobacco harvest in the region is held from October to January, in the morning (07:00 to 11:00) and afternoon (14:00 to 19:00) shifts. Thermal comfort analysis showed that in the morning there is no heat stress (UTI <74), unlike the afternoon where UTI indicates thermal heat discomfort (from November to January), which is progressive over the period. (UTI increases from 2:00 pm to 6:00 pm) and may be potentiated by the physical stress accumulated throughout the working day.

scholarly journals Pengendalian Heat Stress Pada Tenaga Kerja di Bagian Furnace PT. X Pangkalpinang Bangka Belitung

2017 ◽  
Vol 12 (2) ◽  
pp. 150
Author(s):  
Gita Fajrianti ◽  
Zahroh Shaluhiyah ◽  
Daru Lestantyo
Keyword(s):  
Content Analysis ◽  
Heat Stress ◽  
Work Environment ◽  
Health And Safety ◽  
Qualitative Approach ◽  
Fluid Replacement ◽  
Stress Control ◽  
Work Area ◽  
Negative Impacts ◽  
Depth Interviews

ABSTRAKTempat kerja yang nyaman merupakan salah satu faktor penunjang gairah kerja. Lingkungan kerja yang panas dan lembab akan menurunkan produktivitas kerja, juga akan membawa dampak negatif terhadap kesehatan dan keselamatan kerja. Suhu panas terutama berakibat menurunkan prestasi kerja berfikir. Penurunan kemampuan berfikir terjadi sesudah suhu udara melampaui suhu 32⁰C. Suhu dilingkungan area furnace sebesar 34,9⁰C, melebihi NAB yang distandarkan sebesar 30,5⁰C. Tujuan dari penelitiaan ini adalah untuk menganalisis pengendalian heat stress pada tenaga kerja dibagian furnace PT.X Pangkalpinang Kepulauan Bangka Belitung. Penelitian ini menggunakan pendekatan kualitatif dengan wawancara mendalam pada 8 informan utama, 5 orang tenaga kerja dibagian produksi dan 3 orang dari manajemen. Analisa data menggunakan metode content analysis. Hasil penelitian menunjukkan bahwa semua informan mengungkapkan suhu dilingkungan kerja area tanur panas sesuai dengan hasil pengukuran suhu dilapangan sebesar 34,9⁰C melebihi ambang batas yang distandarkan, pengendalian heat stress dengan training (pendidikan atau latihan tentang pengendalian heat stress dan mengendalikan resiko tekanan panas) belum rutin dilaksanakan,  pengendalian dengan penggantian cairan  sudah disediakan  oleh perusahaan tetapi aturan dan pola konsumsi belum dilaksanakan, pengendalian dengan aklimatisasi belum dilaksanakan diperusahaan.Kata Kunci: heat stress, pengendalian, pekerja Control of Heat Stress on Labor at Part Furnace PT. X Pangkalpinang Bangka Belitung. Comfortable workplace is one of the factors supporting morale. The work environment is hot and humid will reduce labor productivity, it will also have negative impacts on health and safety. Warmer temperatures result in lower performance primarily thinking. Decreased ability to think happened after the temperature has exceeded 32⁰ C. The temperature within the furnace area of 34.9⁰ C, which exceeds the standardized NAV of 30.5⁰ C. The purpose of this is to research analyze control of heat stress on the workforce section furnace PT.X Pangkalpinang Bangka Belitung. This study used a qualitative approach with in-depth interviews on 8 key informants, 5 labor section of the production and management 3. Analysis of the data using content analysis. The results showed that all informants reveal the temperature within the furnace hot work area in accordance with the results of temperature measurements in the field at 34.9⁰ C exceeds the threshold standardized, control heat stress with training (education or training on heat stress control and controlling the risk of heat stress) is not routinely executed, control with fluid replacement has been provided by the company but the rules and patterns of consumption have not been implemented, control with acclimatization yet implemented in the company . Keywords: heat stress, control, worker

scholarly journals Sea Breeze Front and Outdoor Thermal Comfort during Summer in Northeastern Brazil

Atmosphere ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 1013
Author(s):  
Max Anjos ◽  
António Lopes ◽  
Andrews José de Lucena ◽  
Francisco Mendonça
Keyword(s):  
Heat Stress ◽  
Thermal Comfort ◽  
Meteorological Data ◽  
Sea Breeze ◽  
Weather Conditions ◽  
Northeastern Brazil ◽  
Outdoor Thermal Comfort ◽  
Physiological Equivalent Temperature ◽  
Local Climate ◽  
Local Climate Zones

Characterizing the behaviour of the sea breeze phenomenon is the foremost factor in the reduction in the heat stress and the achievement of the pleasant environment in coastal cities globally. However, this seminal study shows that the Sea Breeze Front (SBF) development can be related to an increase in outdoor thermal discomfort in a northeastern Brazilian city during summer. We explored the relationship between SBF and thermal comfort conditions using in situ meteorological observations, the SBF identification method, local climate zones (LCZs) classification, and the Physiological Equivalent Temperature (PET) thermal comfort index. SBF days and Non-SBF days were characterized in terms of weather conditions, combining meteorological data and technical bulletins. SBF days included hot and sunny days associated with the centre of the Upper Tropospheric Cyclonic Vortices (UTCV). In contrast, Non-SBF days were observed in UTCV’s periphery because of cloudy sky and rainfall. The results showed that the mean temperature and PET in the SBF days were 2.0 °C and 3.8 °C higher, respectively, compared to Non-SBF days in all LCZ sites. The highest PET, of 40.0 °C, was found on SBF days. Our findings suggest that SBF development could be an aggravating factor for increasing heat stress of the people living in the northeastern coast of the Brazilian city, after SBF passage.

Sign in / Sign up

Export Citation Format

Share Document