scholarly journals Evaluation of water productivity in the saline areas of lower karkheh basin and determination of its causes : a study from southern Iran

2011 ◽  
Vol 44 (3) ◽  
Author(s):  
S. Absalan ◽  
N. Heydari ◽  
M. Sedaghat
Keyword(s):  
Water Productivity ◽  
Southern Iran ◽  
Karkheh Basin

scholarly journals Study and determination of energy consumption to produce conventional rice of the Guilan province

2012 ◽  
Vol 58 (No. 3) ◽  
pp. 99-106 ◽  
Author(s):  
A. Alipour ◽  
H. Veisi ◽  
F. Darijani ◽  
B. Mirbagheri ◽  
A.G. Behbahani
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Water Productivity ◽  
Diesel Oil ◽  
Energy Productivity ◽  
Energy Inputs ◽  
Total Input ◽  
Efficiency And Productivity ◽  
Guilan Province

The aim of this study was to determine the energy efficiency indices in the agro-ecosystems of the Guilan province in 2010. One hundred and twenty-seven farmers were interviewed using a particularly designed questionnaire. The inputs in the calculation of energy use in agro-ecosystems embraced labour, machinery, electricity, diesel oil, fertilizers, seeds, while rice and straw yield were included in the output. The results depicted that total input and output energy into these agro-ecosystems were about 47,604 and 90,680.04 MJ/ha, respectively. The highest energy input was related to water (38.84%), electricity (27.87%) and nitrogen fertilizer (17.5%). Energy efficiency and energy productivity in these agro-ecosystems was 2.19 and 0.064 kg/MJ, respectively, and water productivity was 0.11 kg/m<sup>3</sup>. The results also showed that due to application of flood irrigation in these agro-ecosystems and also water elicited from subterranean sources by electrical pump, the inputs had the largest portion among the energy inputs to agro-ecosystems that this matter increased energy use in the unit area and also reduced energy efficiency and productivity.

scholarly journals Determination of Rotavirus, Sapovirus and Norovirus Co-Infection among Children Suffering from Gastroenteritis Referred to Ahvaz Abuzar Hospital, Southern Iran

2011 ◽  
Vol 5 (4) ◽  
pp. 29-31
Author(s):  
M Parsa-Nahad ◽  
AR Samarbaf-Zadeh ◽  
M Makvandi ◽  
Sh Jalilian ◽  
Gh Kalvandi ◽  
...  
Keyword(s):  
Southern Iran

scholarly journals Geological and tectonic preconditions for hydraulic heterogeneity of the rocks in the area of the Gotse Delchev valley

2021 ◽  
Vol 35 (1) ◽  
pp. 51-61
Author(s):  
Peter Gerginov
Keyword(s):  
Water Productivity ◽  
Potential Method ◽  
Geophysical Survey ◽  
The Self ◽  
Geological Environment ◽  
Precise Data ◽  
Hydrogeological Conditions ◽  
Self Potential ◽  
Hydraulic Heterogeneity

Hydrogeological conditions largely depend on the permeability of the geological environment. In areas with complex geological and tectonic conditions, the detection of hydraulic heterogeneity of the rocks and determination of groundwater-rich zones is a challenge for hydrogeological practice. The aim of the study is to analyze the geological and tectonic prerequisites for hydraulic heterogeneity of the sediments for the Gotse Delchev valley (Southwestern Bulgaria), which predetermine the degree of their water productivity. In order to obtain more precise data for specific sites, a geophysical survey was conducted. The Self-Potential method was chosen, which is one of the most commonly used techniques for applications for hydrogeological purposes. The results of the geophysical survey carried out in selected sites allowed to locate groundwater-rich zones, to establish the depth of occurrence of hard low permeable rocks, as well as to confirm the presence of faults.

scholarly journals DETERMINATION OF WEAK EARTHQUAKE FOCAL MECHANISMS AND MODERN GEODYNAMICS OF SOUTHERN IRAN

2017 ◽  
Vol 8 (4) ◽  
pp. 971-988 ◽  
Author(s):  
Yu. L. Rebetsky ◽  
A. A. Lukk ◽  
R. E. Tatevossian ◽  
V. V. Bykova
Keyword(s):  
Focal Mechanisms ◽  
Southern Iran ◽  
Earthquake Focal Mechanisms ◽  
Weak Earthquake

Determination of actual evapotranspiration for summer clusterbean (Cyamopsis tetragonoloba) using mini-lysimeters in hot arid zone of India

2019 ◽  
Author(s):  
H. M. Meena ◽  
R. K. Singh ◽  
U. Burman
Keyword(s):  
Arid Zone ◽  
Water Productivity ◽  
Actual Evapotranspiration ◽  
Yield Reduction ◽  
Cyamopsis Tetragonoloba ◽  
Irrigation Level ◽  
Arid Zone Research ◽  
Maximum Water ◽  
Irrigation Levels

A field experiment was conducted for three consecutive years 2015-17 during the summer season at the experiment farm of ICAR-Central Arid Zone Research Institute, Jodhpur to determine the actual evapotranspiration of clusterbean [Cyamopsis tetragonoloba (L.) Taub.] using mini-lysimeter by imposing different levels of irrigation based on cumulative pan evaporation (CPE) 50 mm irrigation at 100, 80, 60 and 40% of CPE. Three year averaged actual crop ET was observed 686, 554, 454 and 340 mm under 100, 80, 60 and 40 % irrigation levels, respectively. The highest crop ET was recorded under 100% followed by 80, 60 and 40 % irrigation levels. However, maximum water productivity (0.35 kg m-3) at 80% irrigation level, while the lowest (0.21 kg m-3) was observed at 40% irrigation level.The results also indicated that to achieve maximum water productivity, crop ET would need to be at least 554 mm and the crop can save 19.2% (132 mm) of water with a compromise in yield reduction by 10.4% (225 kg).

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Sign in / Sign up

Export Citation Format

Share Document