نتایج جستجو برای: superabsorbent composite
تعداد نتایج: 122142 فیلتر نتایج به سال:
Cracking is a major concern in building applications. Cracks may arise from shrinkage, freeze/thawing and/or structural stresses, amongst others. Several solutions can be found but superabsorbent polymers (SAPs) seem to be interesting to counteract these problems. At an early age, the absorbed water by the SAPs may be used to mitigate autogenous and plastic shrinkage. The formed macro pores may...
This article briefly describes the general aspects and cross-linking polymerization of superabsorbent polymers (SAPs) and superabsorbent polymer composites (SAPCs). Research and development of SAPs has become very active after the Northern Region Laboratory of the United States Department of Agriculture invented the first SAP, used as a soil conditioner. Based on the advancements in organic/ino...
OBJECTIVE To evaluate the capacity of a superabsorbent dressing (DryMax Extra; AbsorbestAB) to manage excessive exudate, thereby protecting peri-wound skin and facilitating wound healing. METHOD Patients with acute and chronic wounds of various aetiology were assessed, and treatment of their wounds with the superabsorbent dressing was evaluated. The starting point for this study was the needs...
increasing the efficiency of water use is one of the main topics of sustainable agriculture in arid and semi-arid. the use of some materials such as superabsorbent polymers increase water storage in the soil and thus reduces the water use. increase water storage in the soil to reduce the effects of drought and saline soil. in order to evaluate the effect of super absorbent polymer on survival a...
the superabsorbent polymer withholding water and disperse it gradually to roots increase soil water capacity. to study the effect of superabsorbent polymer on decreasing water stress effect as well as increasing irrigation efficiency a factorial experiment based on randomized block design with 4 replicates was design. treatments were 0, 10 and 20 % v superabsorbent and irrigation levels 25, 50 ...
To study the effects of adding a superabsorbent (bentonite) to different substrates on the vegetative growth and yield of snap beans, two randomized complete block design experiments with 4 replications were conducted at Greenhouse of Isfahan University of Technology. In the first experiment, 9 treatments including rice hull, saw dust, sand and their combinations, with 10 and 20% superabsorbent...
OBJECTIVE Urinary tract is one of the most common sources of infection in children under the age of two years. Many known and unknown risk factors predispose to this important disease in children. This study was conducted to determine whether using a specific type of diaper plays a role in urinary tract infection (UTI) in girls under the age of 2 years. METHODS This case control study was per...
Two cross-linkers with different functional groups amide (N,NMethylenebisacrylamide (NMBA)) and esters (Ethylene Glycol Dimethylacrylate (EGDMA)) have been selected for comparative study for crosslinking polyaspartic acid (PAsp) and acrylic acid (AA). Thus, resulting in formation of different polymers with PAsp and acrylic acid in different ratios and cross-linked with different cross-linkers. ...
تأثیر پلیمرهای سوپرجاذب بر خصوصیات مورفولوژیک گیاه رزماری (Rosmarinus officinalis) در شرایط تنش خشکی
In order to study the effects of superabsorbent polymers and drought stress on some morphological characteristics of Rosmarinus officinalis, a pot experiment was conducted as factorial, based on completely randomized design with four replications, in which factors included four levels of drought stress (irrigation up to 100, 75, 50 and 25 percent of field capacity (FC) level, respectively) and ...
Water stress is a global crisis and is considered a serious threat for agriculture. Superabsorbent polymers, through improving soil physical conditions, prevent moisture stress in arid and semi-arid areas. To evaluate the effects of a natural superabsorbent (bentonite) and a synthetic superabsorbent (A200) on growth of lettuce, a factorial experiment in a completely randomized design with four ...
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