Vibrator sensors for atmospheric pressure, temperature, and humidity measurements

1974 ◽  
Vol 56 (5) ◽  
pp. 1644-1649 ◽  
Author(s):  
Yukio Kagawa
Keyword(s):  
Atmospheric Pressure ◽  
Temperature And Humidity ◽  
Humidity Measurements

scholarly journals Climatological and statistical characteristics of the Haines Index for North America

2007 ◽  
Vol 16 (2) ◽  
pp. 139 ◽  
Author(s):  
Julie A. Winkler ◽  
Brian E. Potter ◽  
Dwight F. Wilhelm ◽  
Ryan P. Shadbolt ◽  
Krerk Piromsopa ◽  
...  
Keyword(s):  
North America ◽  
Spatial Variability ◽  
Atmospheric Pressure ◽  
Statistical Characteristics ◽  
Potential Contribution ◽  
Extensive Analysis ◽  
Temperature And Humidity ◽  
Humidity Measurements ◽  
Operational Tool

The Haines Index is an operational tool for evaluating the potential contribution of dry, unstable air to the development of large or erratic plume-dominated wildfires. The index has three variants related to surface elevation, and is calculated from temperature and humidity measurements at atmospheric pressure levels. To effectively use the Haines Index, fire forecasters and managers must be aware of the climatological and statistical characteristics of the index for their location. However, a detailed, long-term, and spatially extensive analysis of the index does not currently exist. To meet this need, a 40-year (1961–2000) climatology of the Haines Index was developed for North America. The climatology is based on gridded (2.5° latitude × 2.5° longitude) temperature and humidity fields from the NCEP/NCAR reanalysis. The climatology illustrates the large spatial variability in the Haines Index both within and between regions using the different index variants. These spatial variations point to the limitations of the index and must be taken into account when using the Haines Index operationally.

Differences in the microenvironment of a polycarbonate caging system: bedding vs raised wire floors

1983 ◽  
Vol 17 (2) ◽  
pp. 85-89 ◽  
Author(s):  
T. H. Raynor ◽  
W. H. Steinhagen ◽  
T. E. Hamm
Keyword(s):  
Bedding Material ◽  
Temperature And Humidity ◽  
Humidity Measurements

The microenvironment of polycarbonate cages housing rats with and without various types of bedding was compared with that of cages that utilized wire floor inserts with different bedding types. Parameters monitored were temperature, humidity, ammonia concentrations and particulates. No differences were noted in the various caging types in relation to temperature and humidity measurements. Significant differences in ammonia concentrations existed in some of the cages when bedding material was used. The use of raised floorwalk inserts also demonstrated significant differences in particulate counts to cages without inserts. The data obtained demonstrated that contact bedding was useful in controlling ammonia generation and that a raised floorwalk insert reduced significantly the aerosolization of bedding particles that could be ingested or inhaled by the rats.

Parameter Measuring System Based on STM32

2013 ◽  
Vol 411-414 ◽  
pp. 922-925 ◽  
Author(s):  
Yao Liang Shi ◽  
Guang Yu Zheng ◽  
Li Wu ◽  
Shu Sheng Peng
Keyword(s):  
Atmospheric Pressure ◽  
Rotation Speed ◽  
Host Computer ◽  
Measuring System ◽  
Nand Flash ◽  
The Core ◽  
Temperature And Humidity ◽  
Parameter Measuring ◽  
Sd Card

A parameter measuring system is introduced in this paper, which is used for recording the temperature and humidity, atmospheric pressure, rotation speed and acceleration, etc. The system uses a 32-bit RISC microprocessor of STM32F103ZET6 based on the core of ARM Coretex-M3 as master chip. And it writes the data recorded to NAND FLASH. After it finishes, it copies the data to host-computer through SD card.

scholarly journals EFFECT OF SOME RADIO CLIMATIC FACTORS ON DIGITAL TERRESTRIAL TELEVISION SIGNAL IN A SAHEL SAVANNAH CITY OF NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 111-118
Author(s):  
Akinsanmi Akinbolati ◽  
Moses Oludare Ajewole
Keyword(s):  
Atmospheric Pressure ◽  
Climatic Factors ◽  
Correlation Coefficients ◽  
Digital Signal ◽  
Signal Strength ◽  
Mean Value ◽  
Wet Season ◽  
Temperature And Humidity ◽  
Data Points ◽  
Digital Terrestrial Television

This study investigates the effect of some radio climatic factors on the Received Signal Strength (RSS) of a Digital Terrestrial Television Broadcast Station (DTTBS) in Katsina City, Nigeria. The RSS was measured at intervals along selected routes around the station using a digital signal strength meter.  GPS receiver was used to log the line of sight, geographic coordinates and heights of data points from the station. The atmospheric pressure, temperature and humidity corresponding to data points were concurrently measured using a compact weather station whereas the corresponding surface radio refractivity (Ns) values were computed. Data were collected during dry and wet season months’ in the year 2017. Results shown that, Ns is inversely proportional to RSS irrespective of routes and seasons with correlation coefficients of -0.51 and -0.57 during dry and wet season months respectively. Higher mean value of, 358.50 (N-units) was deduced during wet compared to the dry season months of 301.20 (N-units). Average atmospheric pressure of 951.92 and 949.61 (hPa) and as well as humidity values of 32.25 and 77.93 %RH were deduced during dry and wet season months’ respectively. Findings also show that pressure is inversely proportional to RSS. The overall effects of pressure, temperature and humidity on RSS is better understood using the effect of Ns since the latter is derived from those parameters. This study concludes that the specified radio climatic factors have attenuation effect on UHF signal and should be put into consideration when planning link’s design and power budgets on the UHF band.  

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