Imbibition of seed of dry bean cultivars stored under high or low temperature and relative humidity conditions

1989 ◽  
Vol 40 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Juan A. Jimenez ◽  
Dermot P. Coyne ◽  
Frank N. Anderson ◽  
L.A. Pavlish
Keyword(s):  
Relative Humidity ◽  
Low Temperature ◽  
Dry Bean ◽  
High Or Low Temperature

scholarly journals Influence of relative humidity and low temperature hydrothermal degradation on fretting wear of Y-TZP dental ceramics

Wear ◽  
2019 ◽  
Vol 428-429 ◽  
pp. 1-9 ◽  
Author(s):  
Amparo Borrell ◽  
Lorena Gil ◽  
Alvaro Presenda ◽  
Maria D. Salvador ◽  
Jozef Vleugels ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Low Temperature ◽  
Fretting Wear ◽  
Dental Ceramics ◽  
Hydrothermal Degradation

Changes in Aerobic Plate and Escherichia coli–Coliform Counts and in Populations of Inoculated Foodborne Pathogens on Inshell Walnuts during Storage

2016 ◽  
Vol 79 (7) ◽  
pp. 1143-1153 ◽  
Author(s):  
JOHN C. FRELKA ◽  
GORDON R. DAVIDSON ◽  
LINDA J. HARRIS
Keyword(s):  
Escherichia Coli ◽  
Listeria Monocytogenes ◽  
Relative Humidity ◽  
Low Temperature ◽  
Foodborne Pathogens ◽  
Limit Of Detection ◽  
Sampling Time ◽  
E Coli ◽  
Plate Counts ◽  
Forced Air

ABSTRACT After harvest, inshell walnuts are dried using low-temperature forced air and are then stored in bins or silos for up to 1 year. To better understand the survival of bacteria on inshell walnuts, aerobic plate counts (APCs) and Escherichia coli–coliform counts (ECCs) were evaluated during commercial storage (10 to 12°C and 63 to 65% relative humidity) over 9 months. APCs decreased by 1.4 to 2.0 log CFU per nut during the first 5 months of storage, and ECCs decreased by 1.3 to 2.2 log CFU per nut in the first month of storage. Through the remaining 4 to 8 months of storage, APCs and ECCs remained unchanged (P > 0.05) or decreased by <0.15 log CFU per nut per month. Similar trends were observed on kernels extracted from the inshell walnuts. APCs and ECCs were consistently and often significantly higher on kernels extracted from visibly broken inshell walnuts than on kernels extracted from visibly intact inshell walnuts. Parameters measured in this study were used to determine the survival of five-strain cocktails of E. coli O157:H7, Listeria monocytogenes, and Salmonella inoculated onto freshly hulled inshell walnuts (~8 log CFU/g) after simulated commercial drying (10 to 12 h; 40°C) and simulated commercial storage (12 months at 10°C and 65% relative humidity). Populations declined by 2.86, 5.01, and 4.40 log CFU per nut for E. coli O157:H7, L. monocytogenes, and Salmonella, respectively, after drying and during the first 8 days of storage. Salmonella populations changed at a rate of −0.33 log CFU per nut per month between days 8 and 360, to final levels of 2.83 ± 0.79 log CFU per nut. E. coli and L. monocytogenes populations changed by −0.17 log CFU per nut per month and −0.26 log CFU per nut per month between days 8 and 360, respectively. For some samples, E. coli or L. monocytogenes populations were below the limit of detection by plating (0.60 log CFU per nut) by day 183 or 148, respectively; at least one of the six samples was positive at each subsequent sampling time by either plating or by enrichment.

scholarly journals Selection for wide temperature adaptation in Chrysanthemum morifolium (Ramat.) Hemsl.

1978 ◽  
Vol 26 (1) ◽  
pp. 110-118
Author(s):  
J. de Jong
Keyword(s):  
Low Temperature ◽  
Chrysanthemum Morifolium ◽  
Temperature Adaptation ◽  
Optimum Temperature ◽  
Selected Abstract ◽  
Days To Flowering ◽  
Selection For ◽  
High Or Low Temperature ◽  
Chrysanthemum Morifolium Ramat ◽  
Short Days

Rooted cuttings of commercial cvs were grown to flowering at five temperatures and the the number of short days to flowering was recorded. The optimum temperature for rapid flowering varied between cvs. The number of days to flowering at the optimum temperature was not related to the delay in flowering caused by either high or low temperature. In many cvs the delay in flowering at low temperature was accompanied by a similar delay at high temperature. It was concluded that for the character 'time to flowering' genotypes should preferably be selected at low temperatures. If low temperature cannot be realized, only rapidly flowering genotypes should be selected. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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 COLD TOLERANCE OF BANANA FRUITS OF DIFFERENT CULTIVARS

2016 ◽  
Vol 29 (3) ◽  
pp. 629-641 ◽  
Author(s):  
JOÃO ALISON ALVES OLIVEIRA ◽  
LUIZ CARLOS CHAMHUM SALOMÃO ◽  
DALMO LOPES DE SIQUEIRA ◽  
PAULO ROBERTO CECON
Keyword(s):  
Relative Humidity ◽  
Low Temperature ◽  
Cold Storage ◽  
Room Temperature ◽  
Storage Time ◽  
Chilling Injury ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Average Temperature ◽  
C Storage

ABSTRACT The objective of this work was to evaluate the tolerance of fruits of different banana cultivars to low temperature storages. Fruits of the cultivars Nanicão (AAA), Prata (AAB), Vitória (AAAB), Maçã (AAB) and Caipira (AAA) were used. Clusters of three fruits were kept in cold storage for 7, 14 and 21 days, with average temperature of 10.53±0.37°C and relative humidity of 85%. Subsequently, the clusters were transferred to temperatures of 22±0.39°C and evaluated for 16 days. The fruits of all cultivars remained green after 21 days of storage at 10.53±0.37°C. Fruits of the cultivar Nanicão did not completely ripened after transferred to the 22°C storage, when stored for 7 days at low temperature. These fruits were firmer, with green peel and low soluble solids and titratable acidity. The fruits of all cultivars complete the ripening when transferred to room temperature after 21 days of cold storage. Chilling injuries increased with cold storage time in all cultivars. The cultivars Nanicão, Caipira and Maçã had more symptoms of chilling injury, while Prata and Vitória were more tolerant to the cold storage (10.53°C) for up to 21 days, showing normal ripening after transferred to the 22±0.39°C storage.

Effective reduced graphene oxide sheets/hierarchical flower-like NiO composites for methanol sensing under high humidity

2018 ◽  
Vol 42 (11) ◽  
pp. 8638-8645 ◽  
Author(s):  
Cecilia A. Zito ◽  
Tarcísio M. Perfecto ◽  
Cristiane S. Fonseca ◽  
Diogo P. Volanti
Keyword(s):  
Graphene Oxide ◽  
Relative Humidity ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
High Humidity ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets ◽  
Sensing Performance

We report the methanol sensing performance of reduced graphene oxide/hierarchical flower-like NiO under 90% of relative humidity and relatively low-temperature.

Impacts of water temperature on the physiology and behaviours of the sea urchins Heliocidaris crassispina and Mesocentrotus nudus that reflect their range extension and disappearance in the Oga Peninsula, northern Honshu, Japan

2020 ◽  
Author(s):  
Wenping Feng ◽  
Nobuyasu Nakabayashi ◽  
Eri Inomata ◽  
Masakazu N. Aoki ◽  
Yukio Agatsuma
Keyword(s):  
Low Temperature ◽  
Native Species ◽  
Feeding Rate ◽  
Sea Urchins ◽  
Temperature Limit ◽  
Feeding Rates ◽  
Righting Response ◽  
Mesocentrotus Nudus ◽  
Temperature Rate ◽  
High Or Low Temperature

Ocean warming has facilitated the extension of Heliocidaris crassispina to Oga Peninsula, Japan, where the native species Mesocentrotus nudus has disappeared. To verify the temperature impacts on the physiology and behaviour of the two species, we reared small sea urchins at the increasing/decreasing temperature rate of 2.5°C week-1. The righting response, lantern reflex, gonad and gut carbon (C) and nitrogen (N) contents, and feeding rate were investigated. The high and low temperature limits of H. crassispina were 33.3°C and 3.9°C, respectively, which were higher than those of M. nudus. The optimal temperature ranges for behaviour and feeding in H. crassispina were 10.3–31.0°C and 10.3–33.4°C, respectively, which were higher than those in M. nudus. Feeding rates decreased significantly in both species when the temperature approached the high or low temperature limit, but the gut C and N contents of were not greatly affected. At 26–31°C, the feeding rate significantly decreased in M. nudus but not in H. crassispina, which may explain the replacement of M. nudus by H. crassispina in the Oga Peninsula.

MOSQUITOES OF MANITOBA: II. THE EFFECT OF STORAGE TEMPERATURE AND RELATIVE HUMIDITY ON HATCHING OF EGGS OF AEDES VEXANS AND AEDES ABSERRATUS (DIPTERA: CULICIDAE)

1969 ◽  
Vol 101 (12) ◽  
pp. 1285-1291 ◽  
Author(s):  
R. A. Brust ◽  
R. A. Costello
Keyword(s):  
High Temperature ◽  
Relative Humidity ◽  
Low Temperature ◽  
Storage Temperature ◽  
Storage Conditions ◽  
Aedes Vexans ◽  
Hatching Time ◽  
Saturated Atmosphere

AbstractOptimum storage conditions for eggs of Aedes vexans (Meigen) were found to be a temperature of 2 °C and a saturated atmosphere. These conditions are also suitable for storing eggs of Aedes abserratus (Felt and Young) but this species can be stored at lower temperatures. When eggs of both species are stored at 2 °C and placed in a hatching medium at 2 °C, hatching begins in A. abserratus but not in A. vexans. A comparable hatch in the latter occurs at 10°–15 °C. Desiccation and death of A. vexans embryos occur rapidly at a low relative humidity (20%) and a high temperature (21 °C) but slowly at low relative humidity and a low temperature (4 °C). Eggs that lose a substantial amount of water will still hatch and the larvae develop normally, but hatching time is delayed. The hatching time may be twice as long as in eggs kept in a saturated atmosphere at similar temperatures, indicating that embryos must regain some of the lost water before hatching can occur.

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