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Register a new userEffect of Changing Trajectory angle on Sprinkling Radius
تغير زاوية الرش و تأثيرها في نصف قطر الرش
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إن اختيار زاوية الرش و تحديد تغيراتها له أهمية كبيرة في أنظمة الري بالرش، حيث تستخدم المرشات ذات زوايا الرش المنخفضة عند رش المياه العادمة، و عند رش البساتين تحت القسم الخضري، في حين تستخدم المرشات ذات زوايا الرش الكبيرة عند رش المياه فوق القسم الخضري للنباتات.
Choosing of sprinkler trajectory angle and estimation of its changing is an important factor in sprinkling irrigation systems. Farmers choose sprinklers with small trajectory angle when they used treatment wastewater, or water is spraying below tree canopy. while sprinklers with high trajectory angle used when spraying above canopy.
References used
Drupka, S., 1980- Deszczownie i Deszczowanie, Panstwowe Wydawnictwo Rolnych i Lesne, Warszawa, p644
Friso, D., Bortolini, L., 2012- Influence of the trajectory angle and nozzle height from the ground on water distribution radial curve of a sprinkler, Journal of agricultural engineering,Vol43,No1, Italy
John Deere Water, 2014 - Sprinkler & Sprays, WWW.JohenDeereWater.com
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This study of the influence of some Soil management represented by
Ground covers and Sprinkling with herbicides on Apple fruit quality “Golden
Delicious“ on the root stock M٩ was conducted in ١٩٩٧ in learning and
investigation center Kuehnfeld in faculty of agriculture of Martin Luther
University in Germany.
The aim of this paper is to study the relation between muscles electrical activity and knee movement during walking for patient with patellafemoral pain by measurement both of electromyography (EMG) and changing of knee angle by electro-goniometer. T
he start and end of the gait cycle were determined by foot sensors, A program was designed for signal processing of the data, Testes were carried out at Hamish hospital in Damascus.
Subjects were divided into two groups: 46 normal subjects and 21 patient. Final results also showed that hamstring group activity and galf group activity decreases during stance phase because knee cancel it first flexion with increase in quadriceps femoris activity to keep extension of knee.
In swing phase, it is noted that the decrease in knee flexion and it depends on the increase in quadriceps femoris activity in all the period of swing phase, but hamstring group activity increases to keep hip instability, that is, it responds to increase activity of
quadriceps femoris with less knee flexion. The activity of subject muscles in the period of gait cycle is less than normal muscles.
A field experiment was conducted in the open field during the
autumn season in year 2015 to study the effect of spraying with two
organic fertilizers (Crop + Extra, Cremalga) on flowering and yield
parameters of cultivars cucumber Maximus F1.
the aim of this papers is to study the relation between calf muscles electrical activity
and knee movement during walking for patient with anterior cruciate ligaments injured
(acl) by measurement both of electromyography (emg) and changing of knee
angle by
electro-goniometer. the start and end of the gait cycle were determined by foot sensors, a
program was designed for signal processing of the data, testes were carried out at hamish
hospital in damascus. subjects were divided into two groups: 46 normal subjects and 10
patient. final results showed that the knee cancels its first flexion, there are activity of calf
muscles, .through push period there is no activity of calf, it is offen depend on hamstring
muscles activity early to keep stability of knee. . in swing phase it noted that decrease in
knee flexion.
Sour orange (Citrus aurantium L.) seedlings were sprayed three times a
season with four levels of urea (45 % N) (2.5, 5.0, 7.5 and 10.0 g/L) and two
levels of ascorbic acid (150 and 300 g/L), each alone or in combinations.
Meanwhile the seedlings
of control treatment sprayed with distilled water
during 2010 growing season, twenty days intervals between each spray and
another. Results obtained at the middle of October of the same season,
indicated that the foliar spray with urea at the concentrations of 5.0, 7.5 and
10.0 g/L significantly increased leaves N and chlorophyll concentrations, leaves
number, seedling leaves area, seedlings height, main stem diameter and leaves
fresh and dry weight, especially at the foliar spray with 10.0 g/L. The means of
these parameters were 3.19%, 66.80 SPAD, 146.66 leaves/seedling, 3700.00
Cm², 83.66 Cm, 4.50 mm, 4.70 g, 1.53 g, respectively. Meanwhile ascorbic acid
spray at two concentrations unsignificantly affected all parameters, except
leaves chlorophyll content, leaves number and seedling leaves area. Most
treatments of combinations spray with urea and ascorbic acid significantly
affected all studied parameters, especially the treatment of foliar spray of urea
and ascorbic acid at a concentration of 10.0 g/L and 300 mg/ L, which gave the
highest means of leaves N concentration, leaves number, seedling leaves area
and leaves fresh and dry weights, and it unsignificantly differs from the
treatments which gave the highest means of seedlings height, main stem
diameter and percentage of leaves dry matter weight .
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