scholarly journals The effect of the design of housing systems for calves on the microclimatic conditions of the rearing environment

2013 ◽  
Vol 56 (1) ◽  
pp. 509-517 ◽  
Author(s):  
D. Němečková ◽  
I. Knížková ◽  
P. Kunc ◽  
L. Stádník
Keyword(s):  
Relative Humidity ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Rectal Temperature ◽  
Housing System ◽  
Air Humidity ◽  
Housing Systems ◽  
Relative Air Humidity ◽  
Microclimatic Conditions ◽  
Calf Rearing

Abstract. The objective of this study was to compare microclimatic conditions in three different housing systems designed for calf rearing – individual wooden hutches, individual tarpaulin hutches and individual pens under shelter – and to evaluate the thermal comfort of calves reared in these systems. Air temperature, relative air humidity and the rectal temperature of calves (n=324) were measured in the hutches and pens during three consecutive years. The hypothesis that the climatic conditions of different housing system designs used in calf rearing affect the thermal comfort of calves was confirmed, as the design of the individual housing systems affected microclimatic conditions and subsequently the rectal temperature of the housed calves as well. Statistically significant differences (P<0.05) were found between the shelter and individual outdoor calf hutches in relation to the measured parameters. In the summer, the shelter showed a significantly (P<0.05) lower air temperature and significantly higher level of both relative air humidity and calf rectal temperature. These significantly higher rectal temperatures in both summer and in transitional periods (from March to June and from September to December) can be explained by microclimatic conditions and specifically by the combination of air temperature and the highest relative humidity that caused less comfortable microclimatic conditions for calves. The high relative humidity is probably caused by inadequate ventilation under the shelter. Therefore, new technology of calf housing under shelter could be recommended as suitable housing only if adequate ventilation is provided.

scholarly journals How diets and the environment influence on the weight of Roman snail in captivity

2020 ◽  
Vol 222 ◽  
pp. 02046
Author(s):  
Irina Tkachenko ◽  
Sergey Tkachenko ◽  
Viktor Dedkov
Keyword(s):  
Weight Loss ◽  
Weight Gain ◽  
Relative Humidity ◽  
Air Temperature ◽  
Helix Pomatia ◽  
Average Weight ◽  
Air Humidity ◽  
Relative Air Humidity ◽  
In Captivity ◽  
Leaf Vegetable

This article presents the results of a study into the influence of the diet, air temperature and relative air humidity, and soil temperature on the average weight of Helix pomatia in captivity. It was shown that vegetables included in the mixed leaf-vegetable diet mitigated the effect of a high air temperature and a low relative humidity. It was established that the air temperature and relative humidity had opposite effects on weight gain in Helix pomatia. The increase in temperature predetermined the weight loss. Despite the high temperature, a humidity of over 75% caused all the molluscs gain weight regardless of their diet.

scholarly journals The Microclimate in Protective Fire Fighter Footwear: Foot Temperature and Air Temperature and Relative Humidity

2016 ◽  
Vol 16 (2) ◽  
pp. 75-79 ◽  
Author(s):  
Emilia Irzmańska
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Initial Level ◽  
Rest Period ◽  
Complete Information ◽  
Fire Fighter ◽  
Air Humidity ◽  
Dorsal Region ◽  
Relative Air Humidity ◽  
Plantar Region

Abstract The study material consisted of two models of protective firefighter footwear. The tests were conducted on subjects in a laboratory using an ergometric treadmill. The parameters of footwear microclimate were continuously recorded using T/RH sensors. For the leather footwear, the highest foot temperature was recorded in the 50th minute of the experiment (35.8°C in the dorsal region and 37.3°C in the plantar region) and for the polymer footwear in the 60th minute of the experiment (35.4°C in the dorsal region and 37.0°C in the plantar region). In the leather footwear, the temperature of the air surrounding the feet rose from 31.0°C to 35.4°C, and then declined, but did not return to the initial level during the rest period. In turn, in the polymer footwear, the temperature rose from 29.0 to 34.7°C, and then decreased to 33.7°C following the rest period. The highest relative air humidity was recorded in the polymer footwear (96.6%), while in the leather footwear it amounted to 91%. Testing the dynamics of the microclimate during footwear use provides complete information about changes in the temperature of the skin of the foot and the temperature and relative humidity of the footwear microclimate.

scholarly journals Microclima e a arborização: o caso de duas áreas do Núcleo Marabá Pioneira, Marabá - Pará

2016 ◽  
Vol 4 (2) ◽  
pp. 54
Author(s):  
Antônio Pereira Júnior ◽  
Edmir Dos Santos Jesus ◽  
Milka Beatriz Faval Bastos ◽  
Rafael Victor Castro Santos
Keyword(s):  
Quality Of Life ◽  
Relative Humidity ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Thermal Sensation ◽  
Urban Climate ◽  
Air Humidity ◽  
Discomfort Index ◽  
Opposite Tendency

Studies of the urban climate involve numerous climatic variables, such as temperature, air humidity and vegetation. The objective of this research was to determine the trend of two meteorological variables (air temperature relative humidity), in relation to the arborization, sensation and thermal hygrometric perception of the population in the microclimate of two areas (A1 = Avenue Antônio Maia; A2 = Street 5 de Abril) Core Marabá Pioneira. For the measurement of temperature and humidity of the air, the methodology recommended by the Agronomic Institute of Campinas (IAC), adapted for the schedules and collection numbers, was applied. To obtain data on thermal comfort, seventy mixed forms were applied for two consecutive days at 12 hours. The thermal sensation was classified per the contained in the Predicted Mean Vote (PMV) and the discomfort, with the Thom Discomfort Index (ID). Twelve daily readings (6:00 a.m. to 5:00 p.m.) were carried out at each hour in the four meteorological shelters (two in each area) during 23 days of July 2015. The results indicated that the air temperature has tendencies to elevation, The relative humidity of the air, presents opposite tendency. The thermal sensation is very hot (+3), the satisfaction with shading was classified as good (A2 = 50%) and regular (A1 = 41.67%), thermal comfort (A1 = 28.76 °C; A2 = 27.70 ºC), ranges from uncomfortable to very uncomfortable. Therefore, there is a need to improve afforestation in the Marabá Pioneira Nucleus, in order to reduce the discomfort index and the quality of life of the population.

scholarly journals Evaluation of Microclimatic Data on Localities with Different Ratio of Vegetation in Urban Environment

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Soňa Keresztesová ◽  
Ján Klein ◽  
Zdenka Rózová
Keyword(s):  
Urban Environment ◽  
Air Temperature ◽  
Open Space ◽  
Significant Contribution ◽  
The Other ◽  
Air Humidity ◽  
Open Spaces ◽  
Heat Islands ◽  
Relative Air Humidity ◽  
Microclimatic Conditions

AbstractMany authors (Akbari, Taha, 1992; Čaboun, 2008; Klein, 2013; Keresztesová, 2013) proved the influence of vegetation on microclimate as well as on the decrease of heat islands. We were interested in how different ratio of vegetation and open spaces influences microclimatic factors. From April to July 2012 microclimatic factors of two different localities with respect to various ratios of vegetation and open spaces were observed in Nitra, Slovakia. More specifically we observed the air temperature, relative air humidity and surface temperatures of four selected points in both localities. We have found out that in the park, i.e. in the locality with a higher portion of vegetation than open space was the course of temperatures more balanced, thanks to the attribute of vegetation to keep a stable microclimate. We have not observed any major Differences between the monitored points variously located in the vegetation in one locality, but on the other hand, we have observed remarkable differences between the two monitored localities. We may allege that the ratio of vegetation and open spaces makes significant contribution to microclimatic conditions of urban environment.

Notes on coexistence of closely related Leiobunum rupestre and L. subalpinum (Opiliones, Eupnoi, Sclerosomatidae)

Zootaxa ◽  
2021 ◽  
Vol 4984 (1) ◽  
pp. 34-42
Author(s):  
PETER KOZEL ◽  
MIHA DELAKORDA ◽  
CHRISTIAN KOMPOSCH ◽  
LJUBA SLANA NOVAK ◽  
TONE NOVAK ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Regression Analyses ◽  
Air Humidity ◽  
Resting Sites ◽  
Relative Air Humidity ◽  
Preliminary Research

Two closely related, syntopic species, Leiobunum rupestre and L. subalpinum, spend the day at apparently randomly distributed resting sites. In this preliminary research, we studied differences in their microclimatic preferences at a locality in the Pohorje Mts., Slovenia. We measured air temperature and relative humidity at individual resting sites, and found that L. subalpinum occupied a slightly wider air temperature-relative humidity ecospace as compared to L. rupestre. Individuals of L. rupestre rested at more humid sites than L. subalpinum. Regression analyses revealed that the presence of L. rupestre was most likely at resting sites with air temperature in the range of 12–17°C and with relative air humidity of 98.1%. In contrast, the presence of L. subalpinum was most likely at resting sites with air temperature 23.1°C and relative air humidity in the range of 65–85%. Nevertheless, microclimatic niches of both species overlapped almost completely, indicating that niche filtering may allow the coexistence of the two species. 

scholarly journals Simulação por ENVI-met das Condições Higrotérmicas da Universidade de Cuiabá, Campus Barão

2020 ◽  
Vol 21 (2) ◽  
pp. 200-205
Author(s):  
Jonathan Willian Zangeski Novais ◽  
Sílvia Finger Dalmaso ◽  
Roberta Daniela de Souza ◽  
Naara Soares dos Santos Brito
Keyword(s):  
Thermal Comfort ◽  
Air Temperature ◽  
Green Roof ◽  
Urban Heat Islands ◽  
Air Humidity ◽  
Dry Period ◽  
Heat Islands ◽  
Relative Air Humidity ◽  
And Performance ◽  
The Times

O crescimento mal planejado das grandes cidades acarreta o aparecimento das chamadas ilhas de calor urbano, que consequentemente geram desconforto nos cidadãos. Em um contexto universitário, o desconforto térmico pode prejudicar a concentração e desempenho de alunos, professores e funcionários. Assim simulou-se o microclima da Universidade de Cuiabá, campus Barão, com o objetivo de analisar as partes críticas desconfortáveis do campus e sugerir estratégias que possam melhorar o conforto térmico local. Para a simulação utilizou-se o software ENVI-met, que espacializa as variáveis temperatura do ar e umidade relativa do ar, sendo simulados os horários de 08, 14 e 20 horas no período chuvoso e seco, conforme a sazonalidade climática local. Encontrou-se como zonas críticas a entrada do Campus, Bloco A, a área de convivência nos intervalos dos alunos e o estacionamento, atingindo temperaturas máximas de 34 ºC. Outra questão que causa preocupação é a baixa umidade relativa do ar no período seco, em que as 14 horas chegou a mínima 23%. Conclui-se que a intensificação de áreas verdes no campus, como gramados e arborização, a substituição de pavimentos, substituindo parte da área asfáltica por pavimentos de calor específico menor, e a utilização de telhado verde, podem contribuir para a melhoria do conforto térmico do campus.   Palavras-chave: Conforto Térmico. Temperatura do Ar. Umidade Relativa do Ar. Telhado Verde. Arborização.   Abstract The poorly planned growth of large cities leads to the appearance of the so-called urban heat islands, which consequently generate discomfort for citizens. In a university context, thermal discomfort can impair the concentration and performance of students, teachers and staff. Thus, the microclimate of University of Cuiabá, Barão campus was simulated, with the objective of analyzing the uncomfortable critical parts of the campus and suggesting strategies that can improve the local thermal comfort. For the simulation, the ENVI-met software was used, which spatializes the variables air temperature and relative air humidity, simulating the times of 08, 14 and 20 hours in the rainy and dry period, according to the local climatic seasonality. Critical areas were the entrance to Campus, Block A, the living area in the students’ break time and the parking, reaching maximum temperatures of 34ºC. Another issue that causes concern is the low relative air humidity in the dry period, when the 14 hours reached a minimum 23%. It is concluded that the green areas intensification at the campus, such as lawns and afforestation, the replacement of pavements, replacing part of the asphalt area with pavements with lower specific heat, and the use of a green roof, can contribute to the improvement of the campus thermal comfort.   Keywords: Thermal Comfort. Air Temperature. Green Roof. Afforestation.  

scholarly journals Hypertension, pregnancy and weather: is seasonality involved?

2014 ◽  
Vol 60 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Brena Melo ◽  
Melania Amorim ◽  
Leila Katz ◽  
Isabela Coutinho ◽  
José Natal Figueiroa
Keyword(s):  
Relative Humidity ◽  
Correlation Coefficient ◽  
Pearson Correlation ◽  
Hypertensive Disorder ◽  
Air Humidity ◽  
Hypertensive Disorders Of Pregnancy ◽  
Monthly Temperature ◽  
Hypertensive Disorders ◽  
Relative Air Humidity ◽  
Hypertensive Disorder Of Pregnancy

Objective: The present study aimed at assessing the association between environmental temperature and the relative humidity of the air with frequency of hypertensive disorders of pregnancy. Methods: A prospective and retrospective, descriptive, ecological study was held at a teaching maternity in Recife, Brazil. Data from all 26.125 pregnant women admitted between 2000 and 2006 were analysed and 5.051 had the diagnosis of hypertensive disorder of pregnancy. The incidence percentages were calculated monthly per deliveries. Data on mean monthly temperature and relative humidity of the air were collected and monthly comparisons were conducted. February was chosen as the reference month due to its lowest incidence of the disease. The relative chance of hypertensive disorders of pregnancy for each other month was estimated by odds ratio and Pearson's correlation coefficient was used to calculate the relation between the incidence of hypertensive disorders of pregnancy and the mean monthly temperature and relative air humidity. Results: February presented the lowest mean monthly incidence (9.95%) and August the highest (21.54%). Pearson correlation coefficient revealed a higher incidence of hypertensive disorders of pregnancy in the cooler months (r= -0.26; p=0.046) and no significant effect of relative air humidity (r=0.20; p=0.128). Conclusion: The incidence of hypertensive disorders of pregnancy may be affected by variations in temperature, increasing during cooler periods.

scholarly journals ПРОГНОЗ РАЗМНОЖЕНИЯ ВРЕДОНОСНЫХ ПОКОЛЕНИЙ ГРОЗДЕВОЙ ЛИСТОВЕРТКИ В УСЛОВИЯХ РАВНИННО-СТЕПНОГО КРЫМА

2012 ◽  
pp. 84-87
Author(s):  
С. Н. Лебедев
Keyword(s):  
Mathematical Models ◽  
Air Temperature ◽  
Lobesia Botrana ◽  
Air Humidity ◽  
Protective Measures ◽  
Relative Air Humidity

Наводяться дані про залежність розвитку шкід-ливих поколінь ґронової листовійки на винограднихнасадженнях рівнинно-степового Криму від абіо-тичних чинників: середньодобової температуриповітря, суми опадів, відносної вологості повітря,а також площі листової поверхні куща винограду.На основі цих даних розроблені математичні мо-делі прогнозу розвитку фітофага, що дадуть змо-гу оптимізувати кратність і своєчасність захис-них заходів у боротьбі з зазначеним шкідником наконкретному сорті винограду. Provides information on the intent of the development ofmalicious generations Lobesia botrana of the leaf rolleron vine plantations of plain-steppe Crimea from abioticfactors: the average daily air temperature, amount of precipitation,relative air humidity, as well as the area of leafsurface bush of grapes. On the basis of these datadeveloped mathematical models of forecasting of thedevelopment of the phytophage, that allows to optimizethe frequency and timeliness of protective measures inthe fight against this pest on a particular cultivar ofgrapes.

scholarly journals Human Thermal Comfort Situation in the Goller (Lakes) District of Turkey

2016 ◽  
pp. 137-144
Author(s):  
Yuksel Guclu
Keyword(s):  
Relative Humidity ◽  
Thermal Comfort ◽  
Human Health ◽  
Air Temperature ◽  
Mediterranean Region ◽  
Human Thermal Comfort ◽  
Almost All ◽  
Relative Humidity Data ◽  
Recreation Activities

Abstract In this study, the determination of the human thermal comfort situation in the Goller District (in the Mediterranean Region) of Turkey has been aimed. In the direction of the aim, the air temperature and relative humidity data of total 11 meteorology stations have been examined according to The Thermo-hygrometric Index (THI) and the New Summer Simmer Index (SSI). According to this, it has been determined that the thermal comfort conditions are not appropriate in the period of October-May on average monthly. The months of June and September are the most appropriate to almost all kinds of tourism and recreation activities in the outdoor in terms of thermal comfort. When THI and SSI indices’ values are evaluated together, the periods between 5th – 25th June and 29th August-16th September are the most appropriate periods in the study area on average in terms of the thermal comfort for the tourism and recreation activities in the outdoor. Keywords: Thermal comfort, human health, The Thermo-Hygrometric Index, The Summer Simmer Index, Goller District, Turkey.

scholarly journals The Importance of the Microclimatic Conditions Inside and Outside of Plant Buildings in Odorants Emission at Municipal Waste Biogas Installations

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6463
Author(s):  
Marta Wiśniewska ◽  
Andrzej Kulig ◽  
Krystyna Lelicińska-Serafin
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Waste Treatment ◽  
Municipal Waste ◽  
Technological Line ◽  
Waste Storage ◽  
Significant Relationships ◽  
Pumping Stations ◽  
Biogas Plants ◽  
Microclimatic Conditions

Municipal waste biogas plants are an important element of waste treatment and energy policy. In this study, odorant concentrations and emissions were measured together with the air temperature (T) and relative humidity (RH) to confirm the hypothesis that the microclimatic conditions have an important impact on the level of odorant emission at municipal waste biogas plants. A simple correlation analysis was made to evaluate the strength and the direction of the relationship between the odorant concentration and emission and air temperature and relative humidity. The mean volatile organic compound (VOC) and NH3 concentrations vary depending on the stage of the technological line of the analysed municipal waste biogas plants and are in the following ranges, respectively: 0–38.64 ppm and 0–100 ppm. The odorant concentrations and emissions correlated statistically significantly with T primarily influences VOC concentrations and emissions while RH mainly affects NH3 concentrations and emissions. The strongest correlations were noted for the fermentation preparation section and for emissions from roof ventilators depending on the analysed plant. The smallest influence of microclimatic factors was observed at the beginning of the technological line—in the waste storage section and mechanical treatment hall. This is due to the greater impact of the type and quality of waste delivered the plants. The analysis of correlation between individual odorants showed significant relationships between VOCs and NH3 for most stages of the technological line of both biogas plants. In the case of technological sewage pumping stations, a significant relationship was also observed between VOCs and H2S. The obtained results may be helpful in preparing strategies to reduce the odours from waste treatment plants.

Sign in / Sign up

Export Citation Format

Share Document