استخدمت في هذا البحث الأقمشة التقنية كأغطية لسطح التربة تمنعها من الانجراف و تدعم نمو البذور كطريقة للتخفيف من مشكلة التصحر.
حضرت خمسة أنواع مختلفة من الأقمشة من ألياف طبيعية: جوز الهند، و قنب، و جوت، قطن معالج و قطن خام. اختبرنا ثلاث خصائص هيدروليكية للأقمشة المحضرة: الانتفاخ، الامتصاصية للماء و النفوذية لبخار الماء.
و وجد أن الأقمشة المحضرة جميعها هي مناسبة لمكافحة التصحر فجميعها تملك امتصاصية عالية للماء و تقلل من تبخر الماء، يملك القماش المحضر من الجوت و القطن المعالج أعلى امتصاصية للماء، و يملك القماش المحضر من القنب مع القطن الخام أقل نفوذية لبخار الماء.
In this research, technical fabrics are used as blankets which prevent soil surface erosion and promote
seed germination as way to mitigation of desertification .
Five different types of fabrics are prepared of natural fiber: coir, hemp, jute, treated cotton and raw
cotton, then three hydraulic properties for prepared fabrics are tested: swell, water absorption, water
vapour permeability.
It is found that all types of prepared fabrics are suitable to combat desertification whereas they have a
high water absorption and they reduce water evaporation, the fabrics of jute and treated cotton have the
highest water absorption and the fabrics of hemp and raw cotton have the lowest water vapour
permeability.
References used
A. R. Horrocks and S. C. Anand,Handbook of Technical Textiles,Woodhead Publishing , 2000
A technical guidance manual : terminology, index,& performance testing procedure for rolled erosion control blanket,Erosion Control Technology Council • Copyright 2006
Amit Rawal, Harshvardhan Saraswat, Stabilisation of soil using hybrid needlepunched nonwoven geotextiles, Geotextiles and Geomembranes xxx (2010) 1-4
The ideal selection of raw materials in manufacturing process is a very important step to
develop this process and to improve the product. For this purpose, we search for initial
parameters to guide us in using clay materials (wherever it locate) i
Hydraulic drives are able to generate high forces and move large loads. With the help of proportional
valves, it is possible to control movements fast and accurately.
Depending on the application, a linear cylinder, a rotary cylinder or a rotary mo
A Study was carried out to evaluate the impact of some insecticide.
The results showed that no effects on growth of the studied fungi
were observation when Deltamethrin and Chlorpyrifos were used by
the low concentration.
The extensive theoretical and empirical studies about the
pressure and flux speed of an incompressible fluid have shown a
number of varied hydraulic problems. This is as a result of
insufficiency In analyzing and studying the variable forces and
This Research aims to study some thermodynamics
properties for some organic liquids depending on the law of
corresponding states using the dimensionless variables (
transferred Parameters ) in the law of condition for liquids and
gases . These va