scholarly journals DEVELOPMENT OF THE AUSTRALIAN PLAGUE LOCUST, CHORTOICETES TERMINIFERA, IN RELATION TO WEATHER I. EFFECTS OF CONSTANT TEMPERATURE AND HUMIDITY

1983 ◽  
Vol 22 (3) ◽  
pp. 247-251 ◽  
Author(s):  
P. Gregg
Keyword(s):  
Constant Temperature ◽  
Temperature And Humidity ◽  
Australian Plague Locust

The Calculation of the Thickness for Uniform Corrosion and Localized Corrosion in Steel Corrosion

2011 ◽  
Vol 255-260 ◽  
pp. 514-518
Author(s):  
Zheng Yi Kong ◽  
Shan Hua Xu ◽  
Yu Sheng Chen
Keyword(s):  
Corrosion Rate ◽  
Constant Temperature ◽  
Safety Assessment ◽  
Steel Corrosion ◽  
Localized Corrosion ◽  
Power Relationship ◽  
Uniform Corrosion ◽  
Experiment Data ◽  
Temperature And Humidity ◽  
Corrosion Pits

Because of the complexity of corrosion, the law of uniform corrosion and localized corrosion is still not clear,so it is difficult to assess their impact on the structure safety. In order to differ them and find their own law, we obtain a lot of corrosion specimens by ways of constant temperature and humidity, and then detect the size of corrosion pits by roughness tester. After that, the method for calculating the thickness of uniform corrosion and localized corrosion is proposed. Then the method is used to analyze the experiment data. The result indicates the thickness of uniform corrosion and localized corrosion all increase with the rate of corrosion, and they all show a power relationship with corrosion rate, so it will provide a basis for distinguishing them in safety assessment.

Memoirs: The Early Embryonic Development of Rhodnius Prolixus (Hemiptera, Heteroptera)

1935 ◽  
Vol s2-78 (309) ◽  
pp. 71-90
Author(s):  
HELEN MELLANBY
Keyword(s):  
Relative Humidity ◽  
Embryonic Development ◽  
Early Development ◽  
Constant Temperature ◽  
Germ Cells ◽  
Rhodnius Prolixus ◽  
Posterior Pole ◽  
Early Embryonic Development ◽  
Temperature And Humidity ◽  
Cent Relative Humidity

1. Eggs of Rhodnius prolixus were incubated at constant temperature and humidity (21° C. and 90 per cent, relative humidity). Eighty-five per cent, was the lowest record of the controls hatched successfully under these conditions. 2. The processes of maturation and fertilization were not studied. 3. Cleavage begins 12-13 hours after incubation. At 25 hours there are 32 nuclei. Yolk-cells are derived from cleavage nuclei, and they multiply by mitosis up to 50 hours. Blastoderm formation is complete after 55-60 hours of incubation. 4. The ventral embryonic rudiment is similar to that of many other insects. As soon as it is formed, germ-cells are budded off at the posterior pole of the egg. 5. The first stage in blastokinesis is fully described. 6. The formation of the mesoderm is by invagination and overgrowth. 7. The endoderm arises from two proliferating areas situated anteriorly and posteriorly. 8. Numerous cells are given off into the yolk during the early development of the embryo. There they disintegrate.

Influence of Humidity on Mortality and Rate of Development of Immature Stages of the Grain-Infesting Mite Tyrophagus castellanii (Hirst) (Acarina: Acaridae) Reared on Mould Cultures

1958 ◽  
Vol 90 (12) ◽  
pp. 721-724 ◽  
Author(s):  
I. Rivard
Keyword(s):  
Direct Effect ◽  
Constant Temperature ◽  
Immature Stages ◽  
Food Material ◽  
Predator Prey ◽  
Rate Of Development ◽  
Fresh Food ◽  
Temperature And Humidity

It was observed that populations of Tyrophagus castellanii (Hirst) reared on cereal flakes and yeast for studies of predator-prey interactions were feeding on moulds rather than on the food material, and that an increase in humidity increased their rates of development. To discover whether this was caused by the direct effect of humidity on the mites or by a greater supply of fresh food brought about by an increase in humidity, rearings were made with a technique developed by Rivard (1958). The mites were reared exclusively on mould cultures under controlled temperature and humidity conditions. It was also possible with this technique to regdate modd growth to some extent, so that a supply of fresh food was always available to the mites. This is a report on the influence of various humidities on mortality and rate of development of the immature stages of T. castellanii at a constant temperature.

Accurate measurement of creep of nylon-6,6 at constant temperature and humidity

Polymer ◽  
1978 ◽  
Vol 19 (8) ◽  
pp. 977-983 ◽  
Author(s):  
David G Hunt ◽  
Michael W Darlington
Keyword(s):  
Constant Temperature ◽  
Nylon 6,6 ◽  
Temperature And Humidity

scholarly journals The decay of airborne bacteria and fungi in a constant temperature and humidity test chamber

2021 ◽  
Vol 157 ◽  
pp. 106816
Author(s):  
Caihong Xu ◽  
Hui Chen ◽  
Zhe Liu ◽  
Guodong Sui ◽  
Dan Li ◽  
...  
Keyword(s):  
Constant Temperature ◽  
Test Chamber ◽  
Airborne Bacteria ◽  
Temperature And Humidity ◽  
Bacteria And Fungi

Design and Performance of a Constant Temperature and Humidity Air-Conditioning System Driven by a Ground Source Heat Pump in Summer

2010 ◽  
Vol 2 (1) ◽  
Author(s):  
X. Yu ◽  
X. Q. Zhai ◽  
R. Z. Wang
Keyword(s):  
Heat Pump ◽  
Constant Temperature ◽  
Air Conditioning ◽  
Weather Condition ◽  
Coefficient Of Performance ◽  
Heat Extraction ◽  
Ground Source Heat Pump ◽  
Air Conditioning System ◽  
Ground Source ◽  
Temperature And Humidity

A constant temperature and humidity air-conditioning system driven by a ground source heat pump was designed and constructed in an archives building in Shanghai. The system consists of a water-to-water heat pump and 280 boreholes with 80 m in depth. During the operation in summer, the heat extraction from the condenser of the heat pump was divided: Part was rejected to the soil, while another was used to reheat the air in air handling units (AHUs). According to the experimental results under a typical summer weather condition of Shanghai, the average coefficient of performance of the heat pump was 5.4. The average indoor temperature and relative humidity of the archives house were 22.8°C and 46.6%, respectively. Since part of the heat extraction from the condenser was used to reheat the air in AHUs, the heat rejected to the soil was reduced by 23%, which was helpful for the earth energy conservation. According to the theoretical analysis, the distance between two boreholes is suggested to be 4–5 m. The deepness of the boreholes is suggested to be 80–100 m in Shanghai.

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