scholarly journals التغیرات المناخیة الشهریة في قضا‌ء بنجوین وأثرها في الراحة الفسيولوجية للإنسان

Twejer ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 685-706
Author(s):  
Bahar BahaHassan Saeed ◽  
◽  
Hasim Othman Baram ◽  
Keyword(s):  
Relative Humidity ◽  
Climatic Changes ◽  
The Other ◽  
K Index ◽  
Climatic Elements

There are significant climatic changes among/during the months of the year in Penjwen, and that was found while the researchers were studying the climatic elements, and in order to identify the most comfortable months, they relied on both temperature, relative humidity and wind. The study was applied to the equations: Oliver, K index. The study has reached several results; the most important of them is that some months (June to August) are the most popular months of comfort by the residents of the study area, unlike the rest of the other months, in which the population of the study area feel annoyed and are uncomfortable.

scholarly journals Küresel Isınmanın Bazı İllerde Yağış Rejimi Üzerine Etkilerinin Projeksiyonları; Ankara, Rize, Aydın ve Hakkâri İlleri Örneği

2020 ◽  
Vol 8 (10) ◽  
pp. 2156-2163
Author(s):  
Hayati Gönültaş ◽  
Halil Kızılaslan ◽  
Nuray Kızılaslan
Keyword(s):  
Global Warming ◽  
Regional Differences ◽  
Climatic Changes ◽  
The Other ◽  
Annual Precipitation ◽  
Agricultural Activities ◽  
Dominant Form ◽  
The World ◽  
Average Annual Precipitation ◽  
Climatic Elements

The effects of global warming have begun to be observed in today's world. Global warming affects Turkey as it affects the other parts of the world. Climatic Elements Turkey differ from province to province as well as they are differ from region to region. In this study order to evaluate these kind of climatic changes in terms of provinces projections, for the provinces of Ankara, Rize, Aydın and Hakkari, intended to show precipitation, were prepared for 10,15,20 and 48 years of future. in order to take regional differences account the provinces were selected from different regions. According to the results of the analysis, while the average annual precipitation between 1971 and 2018 in Ankara was 408.59 mm, it was 2262.76 mm in Rize, 634.33 mm in Aydın and 746.93 mm in Hakkari. Compared to the data realized in the projections prepared for 2019-2066, it is observed that there are changes in almost every province in average annual precipitation in parallel with global warming. However, these changes do not mean excessive changes in precipitation. In this sense, the effect of global warming is not seen as excessive increases in precipitation amounts, but as irregular and dominant form of precipitation. This study is important as it sheds light on the issue of taking precautions in terms of the necessity of ensuring food safety as agricultural activities will suffer as a result of these irregular and dominant rains caused by global warming.

scholarly journals Development of gypsy moth (Lymantria dispar L) on the foliage of Quercus cerris L., Q. Petraea (matt) Liebl. and Q. Robur L. in the controlled conditions

2007 ◽  
pp. 55-67 ◽  
Author(s):  
Slobodan Milanovic
Keyword(s):  
Relative Humidity ◽  
Host Plant ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Environmental Conditions ◽  
Quercus Robur ◽  
Quercus Petraea ◽  
The Other ◽  
Study Results ◽  
Quercus Cerris

The development of Gypsy moth (Lymantria dispar L) was monitored in laboratory conditions, on the foliage of the species Quercus cerris L. Quercus petraea (Matt) Liebl. and Quercus robur L. The experiment was established in the controlled environmental conditions, at the temperature of 25?C, photoperiod 14:10 (day: night) and relative humidity 70%. The objective of the research was to determine the suitability of the study host plant species for gypsy moth development. The study results show that Gypsy moth caterpillars cultivated on Q. petraea foliage had a lower survival, higher number of moultings, longer preadult development and lower fecundity, which makes this species less suitable compared to the other two. Gypsy moth caterpillars cultivated on Q. cerris foliage had the highest survival degree the lowest number of moultings, the shortest preadult development and the highest fecundity, which makes this species the most favourable for gypsy moth development. Q. robur was between the former two species in this respect.

scholarly journals Cultivation of Milky Mushroom (Calocybeindica) in Greenhouse

2021 ◽  
pp. 63-69
Author(s):  
P. Indraja ◽  
M. Madhava ◽  
S. Satyam ◽  
P. R. Chandra ◽  
S. Joy Prince
Keyword(s):  
Relative Humidity ◽  
Traditional Method ◽  
Large Scale ◽  
Nutritive Value ◽  
Edible Mushroom ◽  
Atmospheric Temperature ◽  
The Other ◽  
Controlled Environment ◽  
Mushroom Cultivation ◽  
Experimental Conditions

Mushroom cultivation is one of the most important steps in diversification of agriculture. Milky mushroom (Calocybeindica) is a tropical edible mushroom, popular because of its good nutritive value and it can be cultivated commercially on large scale. Generally, by creating controlled environment in rooms mushroom cultivation is taken up, In traditional method  it is typical to manage the atmospheric temperature and humidity in desired range, which can be maintained easily in greenhouse by automatic control system.Cultivation of milky mushroom in greenhouse was taken up in controlled environment under three different conditions of controlled temperature and relative humidity (RH). The experimental conditions are 28°C and 79% RH, 24°C and 84% RH and 32°C and 72%RH. The yield obtained was found maximum at 24°C temperature and 84% relative humidity when compared with the other two greenhouse environment conditions. The yield from the mushroom cultivation under controlled environmental conditions in greenhouse was found to be high when compared with the conventional practice. It was concluded that, the mushroom cultivation yields high under controlled greenhouse conditions and also economical compared to the conventional method.

The Cause and Forecasting of Ice Fogs *

1953 ◽  
Vol 34 (9) ◽  
pp. 397-400 ◽  
Author(s):  
H. Appleman
Keyword(s):  
Relative Humidity ◽  
Low Temperature ◽  
Combustion Process ◽  
Hydrocarbon Fuels ◽  
Dew Point ◽  
The Other ◽  
Sudden Increase ◽  
Minimum Frequency ◽  
Ice Fog ◽  
Rare Phenomenon

Studies carried out in Alaska and Canada have shown that fog is a relatively rare phenomenon at temperatures between 0° and − 30°F, with a minimum frequency between − 20° and −30°. At still lower temperatures, however, the frequency of fog increases rapidly. This effect is noted only in the immediate vicinity of inhabited areas, such as towns and airfields. The reason for the sudden increase in fog frequency at these temperatures, and the rarity or lack of fog at the higher temperatures, has not been heretofore explained. In a recent study on aircraft condensation trails, it was shown that if the temperature is sufficiently low (between − 20 and − 40°F, depending on the relative humidity), the burning of hydrocarbon fuels, such as would occur in towns and at airfields, easily results in supersaturation of the air and a “surface contrail” or ice fog. At higher temperatures, on the other hand, combustion actually reduces the relative humidity of the atmosphere, hindering the formation of fog. In this paper it is shown that low-temperature (ice) fogs form as a result of the combustion process, and curves are presented showing the temperature-dew-point relationship necessary for the formation of such fogs.

scholarly journals Study On Photovoltaic Modules On Greenhouse Roof For Energy And Strawberry Production

2019 ◽  
Vol 118 ◽  
pp. 03049
Author(s):  
Yilian Tang ◽  
Ming Li ◽  
Xun Ma
Keyword(s):  
Power Generation ◽  
Relative Humidity ◽  
The Other ◽  
Soluble Solids ◽  
Active Radiation ◽  
Photovoltaic Modules ◽  
Pv Modules ◽  
Roof Area ◽  
Microclimate Conditions ◽  
Better Than

The aim of this study was to investigate the effect of PV modules mounted on top of a greenhouse, on the growth of strawberries and microclimate conditions as well as to estimate the generated energy. In this study, two greenhouses with the same volume were established. One greenhouse was equipped with the opaque photovoltaic (OPV) modules which accounted for 25.9% of the roof area, and the other was equipped with the semi-transparent photovoltaic (STPV) modules which accounted for 20% of the roof area. The maximum annual power generation of OPV and STPV modules was 880 and 388 kWh with 30° tilt angle, respectively, by simulating different tilt angles. The temperature under the OPV and STPV modules was 2.9 and 1.1 °C lower than the unshaded part in the greenhouses, respectively, at noon in clear weather, and had little effect on relative humidity. The photosynthetically active radiation (PAR) under OPV and STPV modules was reduced by 43.5% and 31.7%, respectively, under the PE film greenhouse. The contents of soluble solids in strawberries in OPV and STPV greenhouses were 16.4 and 15.7 mg/g respectively, which were higher than those in unshaded samples. The quality and yield of the strawberry samples under the shade of OPV were better than those of the STPV shade.

Effect of temperature of storage and age of fowl eggs on hatchability and sex ratio, growth, and viability of the chickens

1960 ◽  
Vol 11 (4) ◽  
pp. 664 ◽  
Author(s):  
MW McDonald
Keyword(s):  
Relative Humidity ◽  
Sex Ratio ◽  
Storage Temperature ◽  
Lower Number ◽  
The Other ◽  
Effect Of Temperature ◽  
White Leghorn ◽  
Rapid Fall ◽  
Cent Relative Humidity ◽  
Effect Of Age

Fertile White Leghorn eggs were stored for periods ranging from 24 hr to 7 days in environments controlled at 40, 60, or 80°F and 70 per cent. relative humidity. The eggs were then incubated, and observations on numbers of incubator clears and dead embryos at 10 days and again at 17 days, numbers of chickens hatched, weight at hatching, sex ratio, weight of pullets at 14 days of age, and mortalities were recorded. Eggs stored at 40 and 60°F showed no effect of age of egg on number of clears, dead embryos, or number of chickens hatched. Eggs stored at 80°F showed a rapid fall in number of chickens hatched with age of egg before incubation, this effect being produced by increases in number of clears and dead embryos. Storage at 40°F produced a lower number of chickens hatched than at 60°F, owing to a higher number of incubator clears. There was no difference in sex ratio between chickens hatched from eggs stored at 60 and 80°F, neither departing significantly from 50 per cent. pullets. However, storage at 40°F produced significantly more pullets than cockerels, 54.6 per cent. of the chickens being pullets. Storage temperature and age of egg did not affect the hatching weight of the chickens, but when 14 days old, pullets from the eggs stored at 80°F were significantly heavier than pullets from the other groups.

CANADIAN WILTSHIRE BACON: XII. EFFECT OF HEAT TREATMENT ON THE COLOUR AND COLOUR STABILITY OF BACON

1940 ◽  
Vol 18d (8) ◽  
pp. 289-299 ◽  
Author(s):  
C. A. Winkler ◽  
J. W. Hopkins
Keyword(s):  
Heat Treatment ◽  
Relative Humidity ◽  
Correlation Coefficients ◽  
The Other ◽  
Average Intensity ◽  
Colour Stability ◽  
Lower Intensity ◽  
Subsequent Exposure ◽  
Duration Of Heating ◽  
Nitrite Content

The colour of quadruplicate pieces of factory-cured bacon heated at temperatures of 20, 40, 50, 60, 70, and 80 °C. for 5, 10, 20, and 40 hr. was measured at the conclusion of heating, and also after subsequent exposure of the samples for 12, 20, and 96 hr. at 10 °C. and 95% relative humidity. Interacting effects of time and temperature of heating on colour at the conclusion of treatment were demonstrable. At 40 and 50°, total intensity increased with the duration of heating; at 60 and 70°, there was no definite trend, and at 80° it diminished markedly as the period of heating was prolonged. The maximum average intensity resulted from heating at 70°.The decrease in intensity after 12 hr. exposure was related to the duration, but not to the temperature, of previous heating. There was no significant change in intensity between 12 and 20 hr., but a further decrease was evident at the end of 96 hr. The decrease in green intensity was still related to the duration, rather than to the temperature, of heat treatment, but the effects of duration of heating on red and blue stability, noted at 12 and 20 hr., were now replaced by temperature effects.Partial correlation coefficients indicate that increased nitrite content of the meat at the conclusion of heating tended to be associated with a lower intensity of colour. On the other hand, both nitrite content and loss in weight (chiefly moisture) on heating were correlated with increased colour stability on exposure.

scholarly journals Climatic-change implications from long-term (1823-1994) ice records for the Laurentian Great Lakes

1995 ◽  
Vol 21 ◽  
pp. 383-386 ◽  
Author(s):  
R.A. Assel ◽  
D.M. Robertson ◽  
M.H. Hoff ◽  
J.H. Selgeby
Keyword(s):  
Great Lakes ◽  
Climatic Changes ◽  
The Other ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Lake Mendota ◽  
Air Temperatures ◽  
The 1960S ◽  
Different Parts

Long-term ice records (1823-1994) from six sites in different parts of the Laurentian Great Lakes region were used to show the type and general timing of climatic changes throughout the region. The general timing of both freeze-up and ice loss varies and is driven by local air temperatures, adjacent water bodies and mixing, and site morphometry. Grand Traverse Bay and Buffalo Harbor represent deeper-water environments affected by mixing of off-shore waters; Chequamegon Bay, Menominee, Lake Mendota, and Toronto Harbor represent relatively shallow-water, protected environments. Freeze-up dates gradually became later and ice-loss dates gradually earlier from the start of records to the 1890s in both environments, marking the end of the “Little lce Age”. After this, freeze-up dates remained relatively constant, suggesting little change in early-winter air temperatures during the 20th century. Ice-loss dates at Grand Traverse Bay and Baffalo Harbor but not at the other sites became earlier during the 1940s and 1970s and became later during the 1960s. The global warming of the 1980s was marked by a trend toward earlier ice-loss dates in both environments.

scholarly journals Moisture transfer modelling in polystyrene mortar with consideration of sorption hysteresis

2019 ◽  
Vol 128 ◽  
pp. 07006 ◽  
Author(s):  
Maroua Maaroufi ◽  
Kamilia Abahri ◽  
Fares Bennai ◽  
Rafik Belarbi
Keyword(s):  
Air Quality ◽  
Numerical Analysis ◽  
Relative Humidity ◽  
Significant Influence ◽  
Moisture Transfer ◽  
The Other ◽  
Hysteresis Phenomenon ◽  
Indoor Climate ◽  
Sorption Hysteresis ◽  
Transfer Modelling

The walls of buildings experience heat, air and moisture transfers. These transfers have a significant influence on indoor climate, since they affect the value of temperature and relative humidity inhouses. High levels of humidity lead to pathologies in the buildings, and influence the air quality and the hygrothermal comfort of the occupants. In this work, a numerical analysis of the behaviour of polystyrene mortar under hydric solicitations was led. The simulations were held using ComsolMultiphysics and MATLAB. There were two different moisture transfer models used in this work: the first one took into account sorption hysteresis phenomenon, and the other one did not. The computed results showed that considering sorption hysteresis in modelling the hydric behaviour of the material allows obtaining more accurate results comparing to a model that does not consider hysteresis.

UV Light Driven Photoelectric Properties of ZnO Film to Humidity

2020 ◽  
Vol 20 (12) ◽  
pp. 7516-7521
Author(s):  
Zhijun Zou ◽  
Tan Tan ◽  
Gaohua Liao ◽  
Chang Li ◽  
Xiaoxiang Sun ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Bias Voltage ◽  
Screen Printing ◽  
Photoelectric Property ◽  
Uv Light ◽  
The Other ◽  
Time Dependent ◽  
Zno Film ◽  
Photoelectric Properties ◽  
Other Hand

UV light driven photoelectric properties of ZnO film to humidity were researched. ZnO film was prepared through the method of screen printing sustained on Al2O3 substrate. ZnO was characterized by XRD, FE-SEM and EDX. The time-dependent UV light driven photoelectric properties of ZnO were investigated by exposing it to different bias voltages and different relative humidity (20% RH, 40% RH, 60% RH and 80% RH). On one hand, the photoelectric properties of ZnO increased with the augmenting of bias voltage, which shows that a higher bias causes more separation of carriers. On the other hand, the photocurrent decreased with the increase in relative humidity, which shows that bigger humidity results in smaller photoelectric property. To discuss these results, corresponding possible illustrations for the photoelectric properties under different conditions were proposed.

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