scholarly journals Intensity variation of gamma radiation on ground level interface in São Jose dos Campos, SP, Brazil

2021 ◽  
Vol 3 (4) ◽  
pp. 2615-2621
Author(s):  
Alexandre Santos De Souza ◽  
Cleber Souza Correa ◽  
Inacio Malmonge Martin
Keyword(s):  
Relative Humidity ◽  
Gamma Radiation ◽  
Gas Dynamics ◽  
Intensity Variation ◽  
Ground Level ◽  
Rain Intensity ◽  
Daily Fluctuation ◽  
Relative Humidity Range ◽  
Humidity Range ◽  
Measurement Period

In the period June 22 to September 24, 2012 São José dos Campos region experienced dry climate with low relative humidity. The net rain intensity measured in this period was 60 mm/h and the relative humidity range between 30% to 40% on most days. The intensity of gamma radiation from 0.03 to 10.0 MeV, in the measurement period presents a daily fluctuation well clearly, and some small increases when there is rainfall.  These measures were realized at ITA's campus with a scintillator of NaI(Tl), photomultiplier and associated electronics laptop to a Dell 630 PC. A data acquisition interface purchased from (Aware Eletronics, USA) provides a file with measurements versus time, in the range from minute to minute recorded in txt. It was observed that the variation of gamma radiation in the interface soil/air at the region is originating from the local radon gas dynamics and of the presence of wind shear near the ground level.   No período de 22 de junho a 24 de setembro de 2012, a região de São José dos Campos experimentou um clima seco com baixa umidade relativa. A intensidade líquida de chuva medida neste período foi de 60 mm/h e a umidade relativa varia entre 30% a 40% na maioria dos dias. A intensidade de radiação gama de 0,03 a 10,0 MeV, no período de medição apresenta uma flutuação diária bem clara, e alguns pequenos aumentos quando há chuva.  Estas medidas foram realizadas no campus da ITA com um cintilador de NaI(Tl), fotomultiplicador e laptop eletrônico associado a um PC Dell 630. Uma interface de aquisição de dados adquirida da (Aware Eletronics, EUA) fornece um arquivo com medidas versus tempo, na faixa de minutos a minutos gravados em txt. Foi observado que a variação da radiação gama na interface solo/ar na região é originada pela dinâmica local do gás radônio e da presença de cisalhamento do vento próximo ao nível do solo.  

scholarly journals Intensity variation of gamma radiation on ground level interface in São Jose Dos Campos, SP, Brazil

2021 ◽  
Vol 3 (2) ◽  
pp. 853-858
Author(s):  
Inacio M. Martin ◽  
Marcelo P. Gomes
Keyword(s):  
Relative Humidity ◽  
Gamma Radiation ◽  
Gas Dynamics ◽  
Intensity Variation ◽  
Ground Level ◽  
Rain Intensity ◽  
Daily Fluctuation ◽  
Relative Humidity Range ◽  
Humidity Range ◽  
Measurement Period

In the period June 22 to September 24, 2012 São José dos Campos region experienced dry climate with low relative humidity. The net rain intensity measured in this period was 60 mm/h and the relative humidity range between 30% to 40% on most days. The intensity of gamma radiation from 0.03 to 10.0 MeV, in the measurement period presents a daily fluctuation well clearly, and some small increases when there is rainfall.  These measures were realized at ITA's campus with a scintillator of NaI(Tl), photomultiplier and associated electronics laptop to a Dell 630 PC. A data acquisition interface purchased from (Aware Eletronics, USA) provides a file with measurements versus time, in the range from minute to minute recorded in txt. It was observed that the variation of gamma radiation in the interface soil/air at the region is originating from the local radon gas dynamics and of the presence of wind shear near the ground level.

scholarly journals Boltzmann-Based Empirical Model to Calculate Volume Loss during Spirit Ageing

Beverages ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. 60
Author(s):  
Noemí del Toro del Toro ◽  
Fredy Fong Casas ◽  
Julio Ayan Rial ◽  
Maria Caridad Portuondo González ◽  
Harold Crespo Sariol ◽  
...  
Keyword(s):  
Boltzmann Equation ◽  
Relative Humidity ◽  
Quercus Alba ◽  
Volume Loss ◽  
Air Humidity ◽  
White Oak ◽  
The Boltzmann Equation ◽  
Relative Humidity Range ◽  
Two Parameters ◽  
Humidity Range

The Boltzmann equation is applied to fit data of volume loss for evaporation (in %) during spirit ageing in northern white oak (Quercus Alba) standard barrels of 205 L (+/− 10 L) using a temperature and humidity controlled cellar. The Boltzmann equation satisfactory fitted to the experimental data of the volume loss against temperature at constant humidity. Two parameters of the Boltzmann equation showed a linear dependency on the relative humidity of the air, while the other two parameters exhibited a constant value independently of the air humidity. The found empirical mathematical model can be used to calculate the volume loss for evaporation of spirits (40% v/v of ethanol) during ageing in terms of relative humidity (range: 40%–95%) and temperature (range: 10–30 °C) with significant accuracy.

Bioinspired stimuli-responsive multilayer film made of silk–titanate nanocomposites

2017 ◽  
Vol 5 (16) ◽  
pp. 3924-3931 ◽  
Author(s):  
Elena Colusso ◽  
Giovanni Perotto ◽  
Yu Wang ◽  
Marco Sturaro ◽  
Fiorenzo Omenetto ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Multilayer Structure ◽  
Multilayer Film ◽  
Stimuli Responsive ◽  
Term Stability ◽  
Long Term Stability ◽  
Relative Humidity Range ◽  
Responsive Behavior ◽  
Humidity Range

A bioinspired multilayer film made of a new silk–titanate nanocomposite material, showing a humidity-responsive behavior, has been fabricated. The multilayer structure mimics the structure of the cuticle of the Hoplia coerulea beetle and shows long-term stability over a very large relative humidity range.

Entomological Problems of Food Storage in Northern Nigeria

1952 ◽  
Vol 43 (1) ◽  
pp. 111-144 ◽  
Author(s):  
R. W. Howe
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Food Storage ◽  
Northern Nigeria ◽  
Diurnal Range ◽  
Relative Humidity Range ◽  
The Mean ◽  
Humidity Range

In Nigeria, shelled groundnuts are stored in sacks in covered warehouses and as pyramids in the open air. At the beginning of storage the nuts comprise approximately equal quantities of whole, split and broken nuts of a moisture content of 3·4 per cent. The sacks are exposed to direct hot sun whilst stacking.The mean monthly maximum shade temperature in Kano ranges from 101°F. in April to 85°F. in January and August and the mean monthly minimum from 75°F. in May to 56°F. in January. Monthly maximum relative humidities range from 100 per cent, in August and September to 45 per cent, in February, and the monthly minimum from 71 per cent, in August to 12 per cent, in February. The range of mean relative humidity is 81 per cent, in August and 18 per cent, in February. Rains fall between April and September, 70 per cent, falling in July and August. Heavy falls are recorded on about 25 days.Inside warehouses, the maximum monthly temperatures are 102°F. in May and 79°F. in January and February, and minimum temperatures are 81°F. in June, and 58°F. in February. In August the mean relative humidity range is 93 per cent, to 70 per cent. In December it is 34 per cent. to 20 per cent.Just under the roof of a warehouse and on the surface of pyramids the diurnal range is very large.

High relative humidity range sensor based on polymer-coated STW resonant device

2004 ◽  
Vol 100 (1-2) ◽  
pp. 126-130 ◽  
Author(s):  
P. Bruno ◽  
G. Cicala ◽  
F. Corsi ◽  
A. Dragone ◽  
A.M. Losacco
Keyword(s):  
Relative Humidity ◽  
High Relative Humidity ◽  
Range Sensor ◽  
Relative Humidity Range ◽  
Humidity Range

scholarly journals Effect of Relative Humidity on Mycelial Growth of Cercospora canescens

2021 ◽  
Vol 9 (3) ◽  
pp. 276-278
Author(s):  
Naresh Kumar ◽  
Keyword(s):  
Relative Humidity ◽  
Mycelial Growth ◽  
Mycelium Growth ◽  
Humidity Level ◽  
Mycelia Growth ◽  
Cent Relative Humidity ◽  
Relative Humidity Range ◽  
Humidity Range

The relative humidity studies revealed that maximum mycelial of fungus was observed at 90 per cent relative humidity (89.00 mm), which was followed by 100 per cent (86.30 mm). The least mycelia growth was observed at 50 per cent (45.30 mm). A significant decrease in mycelium growth was observed at 80, 70 and 60 per cent (80.40 mm, 70.20 mm and 57.00 mm) humidity level, respectively. Each fungus has its relative humidity range for the growth.

scholarly journals Highly sensitive, room temperature operated gold nanowire-based humidity sensor: adoptable for breath sensing

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 1157-1164
Author(s):  
Parag V. Adhyapak ◽  
Aishwarya M. Kasabe ◽  
Amruta D. Bang ◽  
Jalindar Ambekar ◽  
Sulabha K. Kulkarni
Keyword(s):  
Relative Humidity ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Gold Nanowire ◽  
Humidity Sensing ◽  
Highly Sensitive ◽  
Resistive Sensor ◽  
Relative Humidity Range ◽  
Humidity Range

A novel, highly sensitive gold nanowire (AuNW) resistive sensor is reported here for humidity sensing in the relative humidity range of 11% to 92% RH as well as for breath sensing.

scholarly journals Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound

Chemosensors ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 39 ◽  
Author(s):  
Maria Vesna Nikolic ◽  
Miloljub D. Lukovic
Keyword(s):  
Relative Humidity ◽  
Grain Boundary ◽  
Complex Impedance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Impedance Data ◽  
Analyze Sample ◽  
Relative Humidity Range ◽  
Humidity Range ◽  
Dominant Influence

A porous MgFe2O4-Fe2O3-SnO2 bulk compound with varying SnO2 content was obtained by sintering an appropriate mixture of magnesium oxide, hematite and tin oxide nanopowders at 1000 and 1100 °C. The obtained structure was confirmed by X-ray diffraction analysis. Scanning electron microscopy was used to analyze sample morphology, showing that the addition of SnO2 resulted in an inhomogeneous microstructure with smaller grain size especially at 1000 °C. Significant grain growth of hematite grains was noted at 1100 °C. The influence of relative humidity in the range 30–90% was monitored at room temperature (25 °C) in the frequency range 42 Hz- 1 MHz. The highest reduction of impedance with humidity was noted at lower frequency. Addition of low amounts of SnO2 and sintering at 1000 °C resulted in the highest sensitivity at 105 Hz of 0.391 MΩ/%RH in the RH30–90% range, while the compound with the highest amount of SnO2 showed the largest decrease in impedance with increase in relative humidity ~26 times. All samples showed low hysteresis (below 2%). Complex impedance data was analyzed using equivalent circuits reflecting the dominant influence of the grain boundary in the lower relative humidity range (30–60%) and both grain boundary and grain components in the higher relative humidity range (60–90%).

Influence of Relative Humidity on the Moisture Evaporation of Monocomponent Water-Borne Sealer for Wooden Furniture under Forced Drying Condition

2013 ◽  
Vol 561 ◽  
pp. 341-346
Author(s):  
Meng Wang ◽  
Ze Guang Lu ◽  
Wan Da Jia ◽  
Huai Yan Zhao ◽  
Feng Shuang Wang
Keyword(s):  
Relative Humidity ◽  
Drying Time ◽  
Moisture Evaporation ◽  
Base Materials ◽  
Relative Humidity Range ◽  
The Difference ◽  
Drying Conditions ◽  
Wooden Furniture ◽  
Humidity Range ◽  
Forced Drying

The moisture evaporation amount and drying velocity of monocomponent sealer on the maple-veneered panels as base materials, under the drying conditions of constant temperature of 30°C and relative humidity varied from 30% to 70%, were measured in this study. The results indicated that the moisture evaporation amount increased, and drying velocity decreased with drying time under the same relative humidity, while the moisture evaporation amount decreased with the increase of relative humidity. The drying velocities were remarkable different under different relative humidities. During the same period of drying time, the difference degree of moisture evaporation amount within the relative humidity range of 30% to 50% was smaller than that within the relative humidity range of 50% to 70%.

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