نتایج جستجو برای: and superabsorbent polymer

تعداد نتایج: 16854149  

2011
Mathias Holm Anna Dahlman-Höglund Kjell Torén

BACKGROUND The primary aim of the present study was to investigate if exposure to dust from absorbent hygiene products containing superabsorbent polymer is related to symptoms from the airways and from the eyes. The secondary aim was to estimate the current exposure to superabsorbent polymer among production and maintenance workers in a plant producing hygiene products. METHODS The cohort com...

2017
Vinay Mohan Pathak Navneet Kumar

Synthetic polymer was exploited as water-superabsorbent hydrogel and helped to conserve water in the agricultural soil. The hydrogel polymers were synthesized the carboxymethyl cellulose (CMC) and starch in addition to SiO2 nanoparticles. Superabsorbent hydrogel polymer having 35% water retention ability was analyzed with three replicates. Hydrogel increased the water restoration capability of ...

Journal: :پژوهش های کاربردی زراعی (زراعت سابق) 0
احمدرضا عابدینی کارشناس ارشد زراعت دانشگاه آزاد اسلامی اراک نورعلی ساجدی استادیار گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی واحد اراک

in order to study the effects of a superabsorbent polymer on yield and yield components of dry land wheat cultivars, a field experiment was carried out in factorial arrangement using randomized complete block design with four replications on research field in khomein city, during 2010-2011 cropping season. the experimental factors included three dry land cultivars called azar2, sardari, rasad a...

Journal: :علوم باغبانی 0
مریم حقیقی مریم مظفریان زهرا عفیفی پور

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 ...

2007
Suda Kiatkamjornwong

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...

Journal: :آب و خاک 0
افسانه تنگو علی مهدوی احسان صیاد

to study the effect of aquazorb super absorbent polymer (sap) on reducing drought stress of acacia victoriae seedling, a split plot experiment based on the completely randomized design was conducted. in this research, stressed treatment as the main plots and amount of superabsorbent were considered as sub plot. treatments were applied consisted of four levels of drought stress (15, 30, 60 and 1...

2010
Hao Feng Jian Li Lijuan Wang

Superabsorbent polymer was prepared by graft polymerization of acrylic acid onto the chain of cellulose from flax shive by using potassium persulfate (KPS) as an initiator and N,N-methylenebisacrylamide (MBA) as a crosslinker under microwave irradiation. SEM photographs were also studied for more information about the shive, cellulose from shive, and the superabsorbent polymer. The structure of...

سیاری, محمد, صفری‌نیا, هیثم, صیدی, مهدی, قنبری , فردین ,

Water deficiency stress as the most important abiotic stress plays an important role in the yield suppression of plants worldwide. Considering physiological indices to improve drought resistance is of paramount importance. The objective of present study was to evaluate the effects of different irrigation intervals (irrigation after 5, 7, 9 and 11 days) and rates of superabsorbent polymer (Nil, ...

2008
Yu Chen Yun-fei Liu Hui-min Tan

Superabsorbent polymer was prepared by graft polymerization of acrylic acid onto the chain of carboxymethyl cellulose. This superabsorbent polymer was further treated by the solvent precipitation method. We found that the water absorption rate of the treated polymer was greatly increased and the microstructure of the treated polymer was changed from close-grained structures to loose macropores....

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