scholarly journals SEMI-QUANTITATIVE PRECIPITATION FORECASTS FOR RIVER PUN PUN BY SYNOPTIC ANALOGUE METHOD

MAUSAM ◽  
2022 ◽  
Vol 46 (2) ◽  
pp. 149-154
Author(s):  
K.M. SINGH ◽  
M. C. PRASAD ◽  
G. PRASAD
Keyword(s):  
Blocking Effect ◽  
Analogue Method ◽  
Quantitative Precipitation Forecasts

   An attempt has been made to issue semi-quantitative precipitation forecasts for river Pun Pun by synoptic analogue method. Based upon twelve years data (1982-93) the study reveals that it is possible to issue semi-quantitative precipitation forecasts with confidence. The severe floods in the river Pun Pun pose problems to Patna town due to blocking effect of Ganga.      

scholarly journals Semi-quantitative precipitation forecasts for Kosi/Mahananda catchment by synoptic analogue method

MAUSAM ◽  
2021 ◽  
Vol 61 (2) ◽  
pp. 175-186
Author(s):  
K. M. SINGH ◽  
M. C. PRASAD ◽  
G. PRASAD ◽  
R. PRASAD ◽  
M. K. JHA
Keyword(s):  
Lower Troposphere ◽  
Moist Air ◽  
Nepal Himalaya ◽  
Air Masses ◽  
Orographic Effects ◽  
South West Monsoon ◽  
Analogue Method ◽  
Local Topography ◽  
Quantitative Precipitation Forecasts ◽  
West Monsoon

An attempt has been made to issue semi-quantitative precipitation forecasts for Kosi/Mahananda catchment by synoptic analogue method. Based upon 22 years of data (1982 - 2003) the study reveals that it is possible to issue semi­-quantitative forecasts with confidence. Local topography of the catchments and its steep gradient from Bhim nagar to Chatra / Brahkshetra in Kosi and hills in Darjeeling are favourable regions where moist air masses of the Bay of Bengal and the Arabian Sea during South West Monsoon in lower troposphere converge and trough at 500 hPa especially diffluent in rear creates divergence and moist air mass is pulled up resulting in heavy / very heavy rainfall in sub montane districts of Bihar and Nepal Himalaya in addition to orographic effects. This gives birth to severe floods and makes the life of densely populated districts of  Pumea / Katihar / Saharsa / Kisanganj / Madhepura miserable and badly affects the economy of the region.

scholarly journals Daily quantitative precipitation forecasts based on the analogue method: Improvements and application to a French large river basin

2016 ◽  
Vol 169 ◽  
pp. 147-159 ◽  
Author(s):  
Aurélien Ben Daoud ◽  
Eric Sauquet ◽  
Guillaume Bontron ◽  
Charles Obled ◽  
Michel Lang
Keyword(s):  
River Basin ◽  
Large River ◽  
Analogue Method ◽  
Quantitative Precipitation Forecasts

PLASMA CORTICOSTEROID LEVELS AND ADRENAL ASCORBIC ACID AFTER INTRAVENOUS CORTICOTROPHIN INJECTIONS AND »STRESSFUL« STIMULI IN THE RAT

1962 ◽  
Vol 39 (4) ◽  
pp. 527-538 ◽  
Author(s):  
Pavo Hedner ◽  
Claus Rerup
Keyword(s):  
Ascorbic Acid ◽  
Abdominal Surgery ◽  
Response Curve ◽  
Significant Rise ◽  
Blocking Effect ◽  
High Dose ◽  
Ascorbic Acid Concentration ◽  
Unilateral Adrenalectomy ◽  
Subcutaneous Injections ◽  
Hypophysectomized Rats

ABSTRACT Measurements of plasma corticosteroid levels and adrenal ascorbic acid concentration in steroid blocked and hypophysectomized rats were performed. It was found that prednisolone and dexamethasone were effective in blocking endogenous corticotrophin release within 3–4 hours after subcutaneous injection. These agents also prevented completely the normally occurring rise in plasma corticoid levels after exposure of the rats to ether. Abdominal surgery (unilateral adrenalectomy) resulted in a slight but significant rise in plasma corticoid levels in spite of dexamethasone blockade. The values of adrenal ascorbic acid were not affected significantly. The blocking effect of two daily subcutaneous injections of a high dose of dexamethasone persisted for about one week after the last injection. The sensitivity of the plasma corticoid response was essentially the same in hypophysectomized and dexamethasone blocked rats. The lower part of the log dose response curve was found to be clearly non-linear in the plasma corticoid method following intravenous corticotrophin injection. As a consequence the dose level in quantitative assays of intravenously injected corticotrophin are, in our hands, of the same order as in the adrenal ascorbic acid depletion method.

Experimental study of hydrodynamic effects in the inverse water hydrocarbon emulsions flow in microchannels

2016 ◽  
Vol 11 (1) ◽  
pp. 30-37 ◽  
Author(s):  
A.A. Rakhimov ◽  
A.T. Akhmetov
Keyword(s):  
High Speed ◽  
Petroleum Industry ◽  
Chemical Compounds ◽  
High Viscosity ◽  
Blocking Effect ◽  
High Speed Photography ◽  
Simple Chemical ◽  
Reported Study ◽  
Dynamic Blocking ◽  
Hydrodynamic Effects

The paper presents results of hydrodynamic and rheological studies of the inverse water hydrocarbon emulsions. The success of the application of invert emulsions in the petroleum industry due, along with the high viscosity of the emulsion, greatly exceeding the viscosity of the carrier phase, the dynamic blocking effect, which consists in the fact that the rate of flow of emulsions in capillary structures and cracks falls with time to 3-4 orders, despite the permanent pressure drop. The reported study shows an increase in viscosity with increasing concentration or dispersion of emulsion. The increase in dispersion of w/o emulsion leads to an acceleration of the onset of dynamic blocking. The use of microfluidic devices, is made by soft photolithography, along with high-speed photography (10,000 frames/s), allowed us to see in the blocking condition the deformation of the microdroplets of water in inverse emulsion prepared from simple chemical compounds.

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