scholarly journals Changes in facial surface temperature of laying hens under different thermal conditions

2020 ◽  
Author(s):  
Na Yeon Kim ◽  
Seong Jin Kim ◽  
Mirae Oh ◽  
Se Young Jang ◽  
Sang Ho Moon
Keyword(s):  
Surface Temperature ◽  
Laying Hens ◽  
Thermal Conditions

scholarly journals Changes in facial surface temperature of laying hens under different thermal conditions

2020 ◽  
Author(s):  
Na Yeon Kim ◽  
Seong Jin Kim ◽  
Mirae Oh ◽  
Se Young Jang ◽  
Sang Ho Moon
Keyword(s):  
Surface Temperature ◽  
Laying Hens ◽  
Thermal Conditions

scholarly journals Surface Wetting and Its Effect on Body and Surface Temperatures of Domestic Laying Hens at Different Thermal Conditions

2008 ◽  
Vol 87 (12) ◽  
pp. 2441-2450 ◽  
Author(s):  
S. Mutaf ◽  
N. Şeber Kahraman ◽  
M.Z. Fırat
Keyword(s):  
Laying Hens ◽  
Thermal Conditions ◽  
Surface Wetting ◽  
Surface Temperatures

scholarly journals Using Landsat Thematic Mapper (TM) sensor to detect change in land surface temperature in relation to land use change in Yazd, Iran

Solid Earth ◽  
2016 ◽  
Vol 7 (6) ◽  
pp. 1551-1564 ◽  
Author(s):  
Sajad Zareie ◽  
Hassan Khosravi ◽  
Abouzar Nasiri ◽  
Mostafa Dastorani
Keyword(s):  
Land Use ◽  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Land Use Changes ◽  
Thermal Conditions ◽  
Kappa Coefficient ◽  
Thematic Mapper ◽  
Landsat Thematic Mapper ◽  
Land Use Types

Abstract. Land surface temperature (LST) is one of the key parameters in the physics of land surface processes from local to global scales, and it is one of the indicators of environmental quality. Evaluation of the surface temperature distribution and its relation to existing land use types are very important to the investigation of the urban microclimate. In arid and semi-arid regions, understanding the role of land use changes in the formation of urban heat islands is necessary for urban planning to control or reduce surface temperature. The internal factors and environmental conditions of Yazd city have important roles in the formation of special thermal conditions in Iran. In this paper, we used the temperature–emissivity separation (TES) algorithm for LST retrieving from the TIRS (Thermal Infrared Sensor) data of the Landsat Thematic Mapper (TM). The root mean square error (RMSE) and coefficient of determination (R2) were used for validation of retrieved LST values. The RMSE of 0.9 and 0.87 °C and R2 of 0.98 and 0.99 were obtained for the 1998 and 2009 images, respectively. Land use types for the city of Yazd were identified and relationships between land use types, land surface temperature and normalized difference vegetation index (NDVI) were analyzed. The Kappa coefficient and overall accuracy were calculated for accuracy assessment of land use classification. The Kappa coefficient values are 0.96 and 0.95 and the overall accuracy values are 0.97 and 0.95 for the 1998 and 2009 classified images, respectively. The results showed an increase of 1.45 °C in the average surface temperature. The results of this study showed that optical and thermal remote sensing methodologies can be used to research urban environmental parameters. Finally, it was found that special thermal conditions in Yazd were formed by land use changes. Increasing the area of asphalt roads, residential, commercial and industrial land use types and decreasing the area of the parks, green spaces and fallow lands in Yazd caused a rise in surface temperature during the 11-year period.

scholarly journals Experimental forecast of thermal conditions in the South Kuril region in summer by modified Fourier method

2021 ◽  
Vol 201 (2) ◽  
pp. 458-469
Author(s):  
T. A. Shatilina ◽  
G. Sh. Tsitsiashvili ◽  
T. V. Radchenkova
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Air Temperature ◽  
Temperature Anomaly ◽  
Linear Trend ◽  
Fourier Method ◽  
Thermal Conditions ◽  
Sea Surface ◽  
Fourier Decomposition ◽  
South Kuril Region

Time series of air temperature and sea surface temperature in South Kuril region in July and August are extrapolated to 2020–2024 using modified method of Fourier decomposition. Both cyclic harmonic components and linear trend are accounted. Two main cycles with period of 2 years and 6–7 years dominate in variability of air temperature anomaly (in Wakkanai, Abashiri, Nemuro) and sea surface temperature anomaly (at Кurilsk, Yuzhno-Kurilsk, Malokurilskoe, in the area of Soya Current, and in the area southeastward from Hokkaido), as well as in variability of AT 500 hPa height in the regional centers of atmospheric action, as Far-Eastern depression and Okhotsk anticyclone.

scholarly journals An estimation of the accuracy of the topoclimate range based on the land surface temperature with reference to a case study of the Drawa National Park, Poland

2020 ◽  
Vol 142 (1-2) ◽  
pp. 369-379
Author(s):  
Marek Półrolniczak ◽  
Aleksandra Zwolska ◽  
Leszek Kolendowicz
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
National Park ◽  
Thermal Conditions ◽  
Landsat 8 ◽  
Digital Maps ◽  
Almost All ◽  
Terra Satellite

Abstract Topoclimate depends on specifically local-scale climatic features caused by the interrelations between topography, water, soil, and land cover. The main purpose of this study is to identify, characterize, and delimit the range of topoclimate types at the Drawa National Park (DPN) and to estimate their accuracy while taking into consideration the thermal conditions of the land surface. Based on a set of digital maps, and with the use of the heat-balance Paszyński method, seven types of topoclimate were distinguished. Next, with the use of Landsat 8 and Terra satellite images, the DPN’s land surface temperature (LST) was calculated. The estimation of LST using the distinguished types of topoclimate allowed for determining their degree of quantity diversification as well as assessing the differences between those types. The obtained LST values indicated statistically significant differences between the medians of LST values for almost all of the distinguished topoclimate types, thereby confirming the suitability of the applied topoclimate determination procedure.

Transient Thermal Response of a Rotating Cylindrical Silicon Nitride Workpiece Subjected to a Translating Laser Heat Source, Part I: Comparison of Surface Temperature Measurements With Theoretical Results

1998 ◽  
Vol 120 (4) ◽  
pp. 899-906 ◽  
Author(s):  
J. C. Rozzi ◽  
F. E. Pfefferkorn ◽  
F. P. Incropera ◽  
Y. C. Shin
Keyword(s):  
Silicon Nitride ◽  
Surface Temperature ◽  
Material Removal ◽  
Thermal Response ◽  
Thermal Conditions ◽  
Intense Laser ◽  
Laser Source ◽  
Beam Diameter ◽  
Laser Assisted Machining ◽  
Translational Speed

Laser-assisted machining (LAM), in which the material is locally heated by an intense laser source prior to material removal, provides an alternative machining process with the potential to yield higher material removal rates, as well as improved control of workpiece properties and geometry, for difficult-to-machine materials such as structural ceramics. To assess the feasibility of the LAM process and to obtain an improved understanding of governing physical phenomena, a laser assisted machining facility was developed and used to experimentally investigate the thermal response of a rotating silicon nitride workpiece heated by a translating CO2 laser. Using a focused laser pyrometer, surface temperature history measurements were made to determine the effect of rotational and translational speed, as well as the laser beam diameter and power, on thermal conditions. The experimental results are in good agreement with predictions based on a transient three-dimensional numerical simulation of the heating process. With increasing workpiece rotational speed, temperatures in proximity to the laser spot decrease, while those at circumferential locations further removed from the laser increase. Near-laser temperatures decrease with increasing beam diameter, while energy deposition by the laser and, correspondingly, workpiece surface temperatures increase with decreasing laser translational speed and increasing laser power, In a companion paper (Rozzi et al., 1998), the detailed numerical model is used to further elucidate thermal conditions associated with laser heating and to assess the merit of a simple, analytical model which is better suited for online process control.

scholarly journals Measuring the Urban Land Surface Temperature Variations in Zhengzhou City Using the Landsat-Like Data

2018 ◽  
Author(s):  
Zongmin Wang ◽  
Penglei Mao ◽  
Haibo Yang ◽  
Yong Zhao ◽  
Tian He ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Urban Expansion ◽  
Negative Relationship ◽  
Thermal Conditions ◽  
Landsat Data ◽  
Thermal Environments

Satellite-based remote sensing technologies are utilized extensively to investigate urban thermal environments under rapid urban expansion. Current MODIS data is, however, unable to adequately represent the spatially detailed information because of its relatively coarser spatial resolution, while Landsat data can’t explore temporally the refined analysis due to the low temporal resolution. In order to resolve this situation, we used MODIS and Landsat data to generate “Landsat-like” data by using the flexible spatiotemporal data fusion method (FSDAF), and then studied spatiotemporal variation of land surface temperature (LST) and its driving factors. The results showed that 1) The estimated “Landsat-like” data have high precision; 2) By comparing 2013 and 2016 datasets, LST increases ranging from 1.8°C to 4°C were measurable in areas where the impervious surface area (ISA) increased, while LST decreases ranging from -3.52°C to -0.70°C were detected in areas where ISA decreased; 3) LST has a strongly negative relationship with the Normalized Difference Vegetation Index (NDVI), and a strongly positive relationship with Normalized Difference Built Index (NDBI) in summer; and 4) LST is well correlated with Building density (BD), in a complex conic mode, and LST may increase by 0.460°C to 0.786°C when BD increases by 0.1. Our findings can provide information useful for mitigating undesirable thermal conditions and for long-term urban thermal environmental management.

scholarly journals Land-sea Thermal Contrast in Relation With Summer Monsoon Onset Over the Chao Phraya River Basin

2022 ◽  
Author(s):  
Tomohito J. Yamada ◽  
Sourabh Shrivastava ◽  
Ryosuke Kato
Keyword(s):  
Surface Temperature ◽  
River Basin ◽  
Summer Monsoon ◽  
Asian Summer Monsoon ◽  
Thermal Conditions ◽  
Total Heat ◽  
Western Hemisphere ◽  
Summer Monsoon Onset ◽  
Chao Phraya River ◽  
Early Late

Abstract An earlier onset of the Southeast Asian summer monsoon (SAM) was observed over the Chao Phraya River basin in Thailand using Thai Meteorological Department (TMD)-derived high-resolution merged rainfall from 1981 to 2016. As the SAM is precipitous, its variability depends on many local and global factors, such as thermal conditions over the Bay of Bengal (BoB) and Tibetan Plateau (TbT). Despite tremendous studies in the past, the role of thermal heat contrast over SAM is still not fully understood. Using the observation and reanalysis datasets, it was found that the absolute value of total heat over the BoB was higher. However, the interannual variability in total heat is higher over the TbT. Significant changes in surface temperature (±1.5°C), air thickness (±20 meters) and geopotential height found over the TbT were associated with early (late) SAM onset. The results also suggested that the significant changes in air thickness were influenced by the surface temperature difference over the TbT, and the changes in the integrated apparent heat source and integrated apparent moisture sink were up to ± 100 Wm−2, which resulted in stronger (weaker) convective activities over the BoB and mainland of the Indochina Peninsula during early (late) SAM onset. At the intraseasonal timescale, the instance MJO found over the Indian Ocean and Western Hemisphere at 4 to 10 days span during early SAM onset. An opposite scenario is found for a late SAM onset years with MJO location over Western Pacific and Maritime continent.

scholarly journals STUDI PENGARUH BAHAN PENUTUP ATAP TERHADAP KONDISI TERMAL PADA RUANG ATAP

2017 ◽  
Vol 1 (1) ◽  
pp. 35
Author(s):  
Amat Rahmat ◽  
Eddy Prianto ◽  
Setia Budi Sasongko
Keyword(s):  
Surface Temperature ◽  
Energy Use ◽  
Residential Buildings ◽  
Thermal Conditions ◽  
Heat Radiation ◽  
Air Cooling ◽  
Roof Shape ◽  
Roofing Material ◽  
Roofing Materials ◽  
Selection Of

Abstract:. The uncomfortable thermal conditions in the building are complained of by the inhabitants due to the inappropriate selection of roofing materials, thus making the building unable to achieve the expected thermal conditions. Selection of appropriate roofing material will help in air cooling process and minimize energy use for cooling space. This study was conducted to determine the thermal conditions of roof space generated from various types of roofing materials that have been determined. The study object of this study is the roof space in residential buildings with a saddle roof shape with a slope of 30O roof angle. Roofing material is tile, asbestos and zinc. The results data show that the average thermal spaces of roof space on tile roofs are 1.91OC-2.31OC lower than the asbestos roof and zinc. Roof tile is also more able to withstand the sun's heat radiation. The average surface tile roof temperature is 0.28˚C lower than the surface temperature of the asbestos roof and 1.55˚C lower than the zinc roof surface temperature. However, the average profile of the lowest roof surface temperature during the daytime is on the asbestos roof (38.71˚C). Keyword: Roofing material, Thermal condition, Roof room Abstrak: Kondisi termal yang tidak nyaman pada bangunan banyak dikeluhkan oleh penghuni karena pemilihan material atap yang tidak sesuai, sehingga menjadikan bangunan tidak dapat mencapai kondisi termal yang diharapkan. Pemilihan material penutup atap yang tepat akan membantu di dalam proses pendinginan udara serta meminimalisir penggunaan energi untuk pendinginan ruang. Penelitian ini dilakukan untuk mengetahui kondisi termal ruang atap yang dihasilkan dari berbagai jenis bahan material atap yang sudah ditentukan. Objek studi dari penelitian ini adalah ruang atap pada bangunan rumah tinggal dengan bentuk atap pelana dengan kemiringan sudut atap 30O. Bahan penutup atap adalah genteng, asbes dan seng. Data hasil penelitian menunjukkan bahwa rata-rata termal ruang atap pada atap genteng lebih rendah 1.91OC-2.31OC dari atap asbes dan seng. Atap genteng juga lebih dapat menahan radiasi panas matahari. Rata-rata nilai temperatur permukaan atap genteng lebih rendah 0.28˚C dari temperatur permukaan atap asbes dan 1.55˚C lebih rendah dari temperature permukaan atap seng. Namun rata-rata profil temperatur permukaan atap terendah saat siang hari adalah pada atap asbes  (38.71˚C).Kata Kunci: Bahan penutup atap, Kondisi termal, Ruang atap

RETRACTED ARTICLE: Regional differences in the surface temperature of Naked Neck laying hens in a semi-arid environment

2012 ◽  
Vol 57 (3) ◽  
pp. 377-380 ◽  
Author(s):  
João Batista Freire de Souza ◽  
Alex Martins Varela de Arruda ◽  
Hérica Girlane Tertulino Domingos ◽  
Leonardo Lelis de Macedo Costa
Keyword(s):  
Surface Temperature ◽  
Regional Differences ◽  
Laying Hens ◽  
Arid Environment ◽  
Naked Neck ◽  
Retracted Article ◽  
Semi Arid
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