scholarly journals Seasonal Influences on the Levels of Particulate Cd, Cr and PB in Kuantan River, Pahang

2018 ◽  
Vol 34 (2) ◽  
pp. 813-819
Author(s):  
Fikriah Faudzi ◽  
Kamaruzzaman Yunus ◽  
Mohd. Fuad Miskon ◽  
Mokhlesur Rahman
Keyword(s):  
Seasonal Influences

Preliminary analysis of meteorological and seasonal influences on crustal gas emission relevant to earthquake prediction

1981 ◽  
Vol 71 (1) ◽  
pp. 211-222
Author(s):  
Ronald W. Klusman ◽  
James D. Webster
Keyword(s):  
Soil Temperature ◽  
Earthquake Prediction ◽  
Barometric Pressure ◽  
Radon Emanation ◽  
Phase Lag ◽  
Gas Emission ◽  
Short Term ◽  
Mercury Emission ◽  
Thaw Cycle ◽  
Seasonal Influences

abstract The emission of gas from the Earth's crust is a complex process influenced by meteorological and seasonal parameters. The use of gas emission as a tool in earthquake prediction will require an understanding of these influences. Radon emanation has been integrated over weekly intervals and free mercury vapor emission over 212 hour intervals at a low seismic risk site in Colorado. Radon measured by the Track Etch® technique ranged from 136 to 1750 tracks/mm2 (81 to 1040 pC/liter) over the 1-yr period of the experiment. There was a strong correlation of radon emanation with: instrument vault temperature, barometric pressure, outside temperature, soil temperature, and whether or not the surface soil was frozen. Seasonal influences on radon emanation are important with 94 per cent of the variance being accounted for by the measured meteorological and seasonal parameters. Mercury concentrations in the instrument vault ranged from <1 to 53 ng/m3 over the 1 yr. Mercury emission correlates with vault temperature, vault relative humidity, outside temperature, barometric pressure, soil temperature and moisture, and the soil freeze-thaw cycle. Diurnal cycles are common but do not occur on all days. Other short-term noise in mercury emission is also important and phase shift or phase lag effects are important. Only 32 per cent of the variance in mercury emission can be accounted for by the measured meteorological and seasonal parameters. The short-term noise coupled with phase lags are important factors in mercury emission rates.

scholarly journals Seasonal influences on blood pressure in high normal to mild hypertensive range.

Hypertension ◽  
1989 ◽  
Vol 14 (1) ◽  
pp. 22-27 ◽  
Author(s):  
S Giaconi ◽  
S Ghione ◽  
C Palombo ◽  
A Genovesi-Ebert ◽  
C Marabotti ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Seasonal Influences ◽  
Mild Hypertensive

Wool follicle morphology and cell proliferation in New Zealand Romney sheep: a seasonal comparison of fleeceweight-selected and control rams

1994 ◽  
Vol 45 (4) ◽  
pp. 769 ◽  
Author(s):  
SA Holle ◽  
PM Harris ◽  
AS Davies ◽  
MJ Birtles
Keyword(s):  
New Zealand ◽  
Three Dimensional ◽  
Dermal Papilla ◽  
Proliferating Cells ◽  
Root Sheath ◽  
Inner Root Sheath ◽  
Dimensional Measurements ◽  
Wool Follicle ◽  
Seasonal Influences ◽  
And Control

Effects of selection for high fleeceweight in the New Zealand Romney sheep were investigated in relation to the morphology of individual follicles and changes in the germinative cell population of the follicle bulb. Two-year-old Romney rams, 10 from each of two selection lines (Massey University fleeceweight-selected (FWT) and control (CLT) flock), were run together on pasture for a period from June to early December. At three times during this observation period (June, August and November) skin samples were taken from their midside flanks after local injection of bromodeoxyuridine (BrdU), to assess proliferation of bulb cells and several dimensional measurements of the follicle bulb and dermal papilla. FWT sheep had larger follicle dimensions than CLT sheep during winter and summer, with a greater number of proliferating bulb cells. Both flocks showed a seasonal change in follicle size, with a decline during winter, but the size of the dermal papilla was less affected than the germinative tissue area. Measurements of proliferation density (number of proliferating cells per area/volume of bulb tissue) suggest that changes in proliferation density do not contribute to flock differences in fleece production. However, during summer, FWT showed a 40% advantage over CLT sheep in hourly cell production based on data from three dimensional follicle bulb extrapolation. The different genotypes showed variations in width, as well as area of cortex and inner root sheath (IRS), measured across the top of the dermal papilla. The expression of these differences was further enhanced through seasonal influences, suggesting that there is an interaction between genetic/flock influences and seasonal influences on cell distribution to cortex and inner root sheath.

“Easterlies”‐induced precipitation in eastern Patagonia: Seasonal influences of ENSO'S FLAVOURS and SAM

2020 ◽  
Vol 40 (13) ◽  
pp. 5464-5484
Author(s):  
Eduardo A. Agosta ◽  
Santiago I. Hurtado ◽  
Paula B. Martin
Keyword(s):  
Seasonal Influences
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