نتایج جستجو برای: clay

تعداد نتایج: 21970  

2009
S. Z. Jiang Z. B. Yang W. R. Yang B. Q. Yao H. Zhao F. X. Liu C. C. Chen

The effects of different levels of natural clay enterosorbent on the growth, nutrient availability, and genital organs of post-weaning female pigs fed with an addition of zearalenone (ZEA) were investigated in the study. A total of thirty-five post-weaning gilts (L×Y×D) with an average body weight of 12.36±1.46 kg were used in the test. The gilts were raised individually in metabolism cages and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1394

در بخش اول این پروژه تحقیقاتی، ذرات سیلیکای مجزا و نانوذرات طلا به روش کاهش شیمیایی سنتز شده اند. نانو ذرات هسته/پوسته sio2@au بدست آمده با استفاده از پراش پرتوx، میکروسکوپ الکترونی روبشی(sem)، میکروسکوپ الکترونی عبوری، اسپکتروسکوپی ftir و uv-vis مورد مطالعه قرار گرفتند. در بخش دوم این پروژه، یک الکترود اصلاح شده تحت عنوان fto/clay/ptآماده گردید. الکترواکسیداسیون اتانول در سطح الکترود fto/clay/...

2017
I. Esfandiarpour M. Ranjbar Khorasani H. Shirani

The main purpose of the current research is comparing the results of Artificial Neural Network (ANN) with Adaptive Neuro-Fuzzy Inference System (ANFIS) with regard to determination of the importance of soil properties affecting clay dispersibility. After taking samples from two depths of 0-40 and 40-80 cm, the spontaneous and mechanical dispersions of clay were recorded using both weighing and ...

2016
Youngmin Choi Hyunwook Choo Tae Sup Yun Changho Lee Woojin Lee

Water-repellent soils have a potential as alternative construction materials that will improve conventional geotechnical structures. In this study, the potential of chemically treated water-repellent kaolin clay as a landfill cover material is explored by examining its characteristics including hydraulic and mechanical properties. In order to provide water repellency to the kaolin clay, the sur...

2006
S. L. BARBOUR D. G. FREDLUND

The mechanical behavior of compressible clay soils may be strongly influenced by physicochemical effects when concentrated pore fluids are introduced to the soil. Conceptual models have been used to explain the influence of pore fluid chemistry on the mechanical behavior of clays in a qualitative way. In this paper an alternate macroscopic description of the osmotic volume change behavior of a ...

Journal: :ACS applied materials & interfaces 2012
Vincent Ojijo Suprakas Sinha Ray Rotimi Sadiku

Polylactide/poly[(butylene succinate)-co-adipate] (PLA/PBSA)-organoclay composites were prepared via melt compounding in a batch mixer. The weight ratio of PLA to PBSA was kept at 70:30, while the weight fraction of the organoclay was varied from 0 to 9%. Small angle X-ray scattering patterns showed slightly better dispersion in PBSA than PLA, and there was a tendency of the silicate layers to ...

2014
Udo Kielmann Gunnar Jeschke Inés García-Rubio

Polymer-clay nanocomposites (PCNCs) containing either a rubber or an acrylate polymer were prepared by drying or co-precipitating polymer latex and nanolayered clay (synthetic and natural) suspensions. The interface between the polymer and the clay nanoparticles was studied by electron paramagnetic resonance (EPR) techniques by selectively addressing spin probes either to the surfactant layer (...

2004
Thomas R. Way Tadashi Kishimoto

An 18 4R38 radial-ply tractor drive tyre was operated at 10% travel reduction, at three correctly inflated combinations of dynamic load and inflation pressures on a structured clay soil and at another combination of load and inflation pressure on a loose sandy loam and a loose clay loam soil. Soil–tyre interface pressures on the face of one lug and on an undertread region between two lugs were ...

1999
Peter Grindrod Mark Peletier Hiroyasu Takase

We consider the interaction between a saturated clay buffer layer and a fractured crystalline rock engineered disturbed zone. Once saturated, the clay extrudes into the available rock fractures, behaving as a compressible nonNewtonian fluid. We discuss the modelling implications of published experiments carried out in Sweden and more recently in Japan. Extrusion is halted either when the advanc...

2007
Ahmed Al-Futaisi Ahmed Al-Jamrah Amer Al-Rawas

The goal of this study is to investigate and develop a cost-effective procedure for the treatment of contaminated water by sorption technology using an Omani clay mineral. Attapulgite (Palygorskite) is a clay mineral that exists in the Sultanate of Oman in huge reserves in two deposits in the southern part of Oman. In this paper, we present our first findings about this important clay in the re...

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