Wajid Hasan1 and C. P. Singh2
Relationship between the population of mustard aphid,Lipaphis erysimi (Kaltenbach) and weather parameters on different cultivars of Indian mustard ( Brassica juncea L.)
...rainfall, wind velocity, evaporation and positive with afternoon and morning relative humidity. The values of coefficient of determination (R ) were high (0.92 to 0.99), indicated that the population of L. erysimi governed significantly with the weather parameters. It concluded that the temperature (max. 18.7 and min. 5.0 C), relative humidity (morning 91.5 and afternoon 50.5 percent), rainfall (000.0 mm), evaporation (below...
Abdul Razaq*, Muhammad Jamal Khan*, Tahir Sarwar* and Mohammad Jamal Khan**
EFFECT OF DEFICIT IRRIGATION, SOWING METHODS AND MULCHING ON WHEAT YIELD AND NITROGEN UPTAKE
...ng temperature with high evaporation rate and poor sowing, an experiment was conducted at the research farm of the University of Agriculture, Peshawar during 2011-12. In the study three factors were studied i.e., sowing methods, mulching and deficit irrigation with four levels viz: full irrigation (DI ), 20% deficit irrigation (DI ), 40% deficit irrigation (DI ) and 60% deficit irrigation (DI ). Soil moisture was continuously monitored and full irrigation was ...
Radek Aulicky1,*, Vaclav Stejskal1 and George Opit2
...f 1-, 6-, and 24-h DDVP (evaporation rate: 0.15 ± 0.02 g.day-1) strip exposures on 5 stored-product pests, namely, Tribolium castaneum, Oryzaephilus surinamensis, Cryptolestes ferrugineus, Rhyzopertha dominica and Sitophilus granarius in an experimental chamber. We tested two DDVP evaporation regimes from the strips, namely, “preventive” and “repressive&r...
Aamir Saleem1, Arshad Mahmood Malik2*, Najam Ul Hassan1 and Imtiaz A. Qamar3
...n fall, temperature, pan evaporation, sunshine and wind speed for interpreting results along with their statistical analysis as fixing legume with grass has improved the forage quality. Overall, these results has suggested that grass-legume mixtures can improve livestock and pasture productivity, sustainability and as well as to fix atmospheric nitrogen and this may improve soil N status also. These mixtures were also recommended for use in the semi-arid regio...
Tajwali Khan1*, Ihtzaz Qamar1, Feroz Shah2, Kareem Akhtar2, Rehman Akhtar3
MODEL FOR FUEL DROPLET EVAPORATION IN COMBUSTION CHAMBER OF LIQUID PROPELLANT ROCKET ENGINES
...o component fuel droplet evaporation model is developed and proposed for droplet evaporation in liquid rocket
engine based on heat and mass transfer. Effect of the fuel droplet curvature on vapor pressure is incorporated in the
model. The model is applied on a small-scale combustion chamber of bi-propellant liquid rocket engine where fuel
concentration away from droplet is not zero. A code is generated a...
engine based on heat and mass transfer. Effect of the fuel droplet curvature on vapor pressure is incorporated in the
model. The model is applied on a small-scale combustion chamber of bi-propellant liquid rocket engine where fuel
concentration away from droplet is not zero. A code is generated a...
Muhammad Irfan*, Saeed Gul*, Mohammad Younas*
SOLAR STILL PERFORMANCE FOR SEA WATER PURIFICATION: A STATISTICAL AND EXPERIMENTAL STUDY
...nd optimized for maximum evaporation rate of model sea water. The various parameters such as water depth in still, average day temperature and average water temperature in still were studied experimentally and verified statistically though ANOVA (analysis of variance). It was found that the water temperature in the still is the most significant parameter that largely affects the evaporation rate. The fres...
Asad Naeem Shah1,2, GE Yun-shan1, HE Chao1,3
MACROSCOPIC SPRAY CHARACTERISTICS OF DIESEL AND BIODIESEL-DIESEL BLEND: AN EXPERIMENTAL COMPARISON
...ey role in the fuel evaporation and mixing of fuel with air in the combustion chamber. It was found that the injection pressure, spray tip penetration and cone angle of the fuels increased with the increase in injection duration. Furthermore, the injection pressure of B20 was higher than that of diesel because of its higher incompressibility, which increased the droplet momentum and tip penetration. The ambient pressure displayed a stronger...
Djoko Kisworo*, Martina Safitri, BRD Wulandani, Bulkaini, Syamsuhaidi
... mainly due to bacteria, evaporation of the egg contents, indicated by egg weight loss, Haugh Unit (HU), air cavity, and an increase in pH. This research aims to determine the best level of sour starfruit (SSF) extract on the shelf life of chicken eggs. A Completely randomized design (CRD) was used in a 3 x 3 factorial pattern with five replications. The Factors were the level of SSF (0%, 10%, and 20%) and storage time (2, 4, and 6 weeks). Data were analyzed a...
*Arshad Javaid1, Syeda Fakehha Naqvi1 and Iqra Haider Khan1
...acted in methanol. After evaporation of the solvent, the remaining
extract was mixed in water and partitioned with n-hexane, chloroform and finally with ethyl
acetate. The last fraction was analyzed through GC-MS that indicated the presence of 15
compounds. These included the three major compounds namely o-xylene (15.03%),
cyclopentanol (13.42%) and 2-hexanol (13.99%). The moderately and less abundant
Syed Said Badshah Bukhari and Ghulam Ali Bajwa
...n temperature, rainfall, evaporation and wind was assessed based on instrumental meteorological observations during 1985-09 in Peshawar. The results showed 0.85oC (0.77oC - 0.92oC) increase in temperature. The spring season started 15.6 days earlier as well as spring season period was shortened by 17.8 days. The summer season was extended and spread over seven months (April-October) having mean maximum temperature >30o
K. M. Siddiqui
...ratures and high rate of evaporation in them, still, most of the soil degradation, including salinity and waterlogging have occurred in these regions due to removal of natural vegetation of dry tropical thorn forests and disturbance of natural ecosystem and drainage in the first instance which was subsequently extended by faulty irrigation practices for production of food and fiber to meet the needs of increasing population. In the latter case, the seepage of ...
Mahmood Iqbal Sheikh
... no loss of water due to evaporation or seepage, the plants are supplied with a quantity just sufficient for their survival and growth....
M. A. Quraishi, A. Khalique, Shahida Perveen and Perveen Akhtar
...ation, wind velocity and evaporation; and low soil moisture. Under such conditions the natural regeneration of this species is scanty and efforts are being made to plant it.
The aim of the present investigation was to gain information about the water balance factors of this species under natural conditions....
The aim of the present investigation was to gain information about the water balance factors of this species under natural conditions....
Muhammad Iqbal1*, Saba Iqbal1, Asmat Ullah2, Arbab Jahangeer1, Naveed Akhtar3, Tahira Tabassum3, Ali Zohaib3, Naveed Ramzan3
...hing which reduces water evaporation from soil hence limits upward movement of salts. Moreover, it also reserves soil moisture, increases utilizing efficiencies of nutrient and water hence improves crop yield. Critical research gaps exist in understanding the long-term effectiveness of various mulching materials on cotton yield and soil health in saline soils. Comparative analyses between organic and inorganic mulches and mechanistic understanding of salt redu...
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Effect of Organic Fertilizers on Potato Cultivars in Parachinar (District Kurram), Pakistan
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