Interactive effects of temperature and relative humidity on oviposition and development of Callosobruchus chinensis (L.) on azuki bean

The heat resistance of Listeria monocytogenes was determined in infant formula for all possible combinations of temperature (50, 55, and 60°C), pH level (5, 6, and 7), and NaCl concentration (0, 2, and 4%). Survival curves were fit using nonlinear regression with a Gompertz equation. The Gompertz equation was flexible enough to fit the three most commonly observed survival curves: linear curves, those with an initial lag region followed by a linear region, and sigmoidal shaped. Parameter estimates obtained by the method of nonlinear least squares were used to describe the effect(s) of different heating treatments on the lag region, death rate, and tailing region of survival curves. These estimates were further used to predict single and interactive effects of temperature, pH, and percentage of NaCl on the log of the surviving fraction (LSF) of bacteria. Interactions among these variables significantly (P ≤ .05) affected the LSF. Generally, increased pH or NaCl concentration lead to an increased LSF, whereas increased time or temperature lead to a decreased LSF. All multiple-factor interactions significantly (P ≤ .05) affected the LSF. The correlation of observed LSF versus predicted LSF (R2 = .92) indicated that the estimated Gompertz equation was in close agreement with the observation. This study demonstrated that the Gompertz equation and nonlinear regression can be used as an effective means to predict survival curve shape and response to heat of L. monocytogenes under many different environmental conditions.

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Interactive effects of temperature and geography on emigration behavior of Drosophila melanogaster. II. Further studies on geographical differences.

The Japanese Journal of Genetics ◽

10.1266/jjg.58.487 ◽

1983 ◽

Vol 58 (5) ◽

pp. 487-496 ◽

Cited By ~ 2

Author(s):

Kenji MIKASA ◽

Takashi NARISE

Keyword(s):

Drosophila Melanogaster ◽

Interactive Effects ◽

Geographical Differences ◽

Effects Of Temperature ◽

Emigration Behavior

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Effect Factors of Benzene Adsorption and Degradation by Nano-TiO2Immobilized on Diatomite

Journal of Nanomaterials ◽

10.1155/2012/593924 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Lijun Cheng ◽

Yong Kang ◽

Guishui Li

Keyword(s):

Relative Humidity ◽

Light Intensity ◽

Experimental Results ◽

Benzene Adsorption ◽

Effect Factors ◽

Benzene Concentration ◽

Effects Of Temperature ◽

Safe Concentration

Difference between adsorption of benzene by diatomite and nano-TiO2immobilized on diatomite was investigated. And effects of temperature, light intensity, relative humidity, and initial benzene concentration on adsorption and degradation of benzene by nano-TiO2immobilized on diatomite were also studied. The experimental results showed that when initial benzene concentration was2.2×10−3 mg L−1, it could be degraded to below safe concentration (1.1×10−4 mg L−1) after 50 h when temperature was 20°C, but it just needed 30 h at 35°C. When light intensity was 6750 Lx, it needed 30 h for benzene to be degraded to below safe concentration, but benzene could barely be degraded without light. When relative humidity was 50%, benzene could be degraded to1.0×10−4 mg L−1after 30 h, while its concentration could be reduced to7.0×10−5 mg L−1at the relative humidity of 80%.

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Survival of Endocronartium harknessii teliospores in a simulated airborne state

Canadian Journal of Botany ◽

10.1139/b89-122 ◽

1989 ◽

Vol 67 (3) ◽

pp. 928-932 ◽

Cited By ~ 5

Author(s):

Kan-Fa Chang ◽

P. V. Blenis

Keyword(s):

Relative Humidity ◽

Liquid Nitrogen ◽

Long Distance ◽

Spider Webs ◽

Considerable Potential ◽

Good Ability ◽

Endocronartium Harknessii ◽

Spore Longevity ◽

Effects Of Temperature ◽

Increasing Temperature

The effects of temperature and relative humidity (RH) on the survival of Endocronartium harknessii teliospores and the longevity of these spores out of doors during daylight hours were studied. In one experiment, fresh and liquid-nitrogen-stored spores of E. harknessii were impacted onto spider webs or plastic threads and incubated in darkness at temperatures of 6, 15, and 24 °C and RHs of 39 and 98%. Survival was measured after 1, 2, 4, 8, and 16 days. Spore longevity decreased with increasing temperature and was lower at 98 than at 39% RH. In a second experiment, spores were impacted onto spider webs and placed out of doors on clear days. Viability decreased linearly with time and averaged 33% after 12 h. The data suggest that E. harknessii has relatively good ability to survive in an airborne state and thus would have considerable potential for long distance spread.

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Effects of Temperature and Relative Humidity on Pollen Germinability and Pollen Tube Growth in the Style of Zingiber mioga Roscoe

Engei Gakkai zasshi ◽

10.2503/jjshs.57.43 ◽

1988 ◽

Vol 57 (1) ◽

pp. 43-51 ◽

Cited By ~ 3

Author(s):

Shinichi ADANIYA ◽

Teruo HIGA

Keyword(s):

Relative Humidity ◽

Pollen Tube ◽

Pollen Tube Growth ◽

Tube Growth ◽

Pollen Germinability ◽

Effects Of Temperature

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The Effect of Temperature and Humidity May Reduce the Growth Rate of the Coronavirus Disease 2019 Epidemic

10.21203/rs.3.rs-27890/v1 ◽

2020 ◽

Author(s):

Lei Qin ◽

Qiang Sun ◽

Jiani Shao ◽

Yang Chen ◽

Xiaomei Zhang ◽

...

Keyword(s):

Growth Rate ◽

Relative Humidity ◽

Effect Of Temperature ◽

Average Temperature ◽

Temperature And Humidity ◽

Scatter Plots ◽

Low Humidity ◽

Average Relative Humidity ◽

Effects Of Temperature ◽

The Relationship

Abstract Background: The effects of temperature and humidity on the epidemic growth of coronavirus disease 2019 (COVID-19)remains unclear.Methods: Daily scatter plots between the epidemic growth rate (GR) and average temperature (AT) or average relative humidity (ARH) were presented with curve fitting through the “loess” method. The heterogeneity across days and provinces were calculated to assess the necessity of using a longitudinal model. Fixed effect models with polynomial terms were developed to quantify the relationship between variations in the GR and AT or ARH.Results: An increased AT dramatically reduced the GR when the AT was lower than −5°C, the GR was moderately reduced when the AT ranged from −5°C to 15°C, and the GR increased when the AT exceeded 15°C. An increasedARH increased theGR when the ARH was lower than 72% and reduced theGR when the ARH exceeded 72%.Conclusions: High temperatures and low humidity may reduce the GR of the COVID-19 epidemic. The temperature and humidity curves were not linearly associated with the COVID-19 GR.

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