نتایج جستجو برای: روش sol
تعداد نتایج: 386356 فیلتر نتایج به سال:
هدف: پژوهش حاضر با هدف تعیین نقش تعاملی خودشفقت ورزی زوجین در تنظیم شناختی هیجان خود و همسر به روش مدلسازی وابستگی متقابل عامل-شریک انجام شد. روش: از نوع توصیفی_همبستگی مدل یابی معادلات ساختاری بود. جامعه آماری شامل کلیه ساکن شهر تهران سال 1399 بود که بین آنها 167 زوج (334 شرکت کننده) نمونه گیری دردسترس عنوان نمونه انتخاب برای گرداوری داده ها پرسشنامه راهبردهای تنظیم هیجان_فرم کوتاه گ...
Porosity reduction, packing, pore-size distribution, and anatase to rutile phase transformation behavior of nanostructured titania ceramics prepared from both peptized and unpeptized sols were studied and compared using XRD, DSC, and nitrogen-gas physisorption techniques. Precursor gels prepared from the peptized sol had a green density of about 70% after drying at 4 0 T , whereas the samples p...
Since its inception a decade ago, sol-gel encapsulation has opened up an intriguing new way to immobilize biological materials. An array of substances, including catalytic antibodies, DNA, RNA, antigens, live bacterial, fungal, plant and animal cells and whole protozoa, have been encapsulated in silica, metal-oxide, organosiloxane and hybrid sol-gel polymers. The advantages of these 'living cer...
An one-step, fast and potential low cost process has been developed to fabricate silica like glass nanostructures by combining sol-gel chemistry and thermal nanoimprint. An inorganic-organic sol-gel thin film is patterned at low pressure and temperature with flexible stamps. Various geometries are achieved with a patterning resolution of about 150 nm and patterns aspect ratio higher than 4. To ...
An analysis of the plasma proteins in the sol phase of sputum was carried out using quantitative cross immunoelectrophoresis. The average concentrations of nine plasma proteins were estimated in the sol phase of sputum specimens from 30 patients with chronic bronchitis and the values were compared with the concentrations of these proteins in saliva and serum specimens from the same group of pat...
A heat-induced O/W emulsion gel that undergoes a phase transition from sol to gel on heating was formed from the addition of aqueous HCl to a toluene solution of a long-chain amidoamine derivative (C18AA). The heat induced O/W emulsions are highly sensitive to temperature, and the sol-gel transition temperature could be simply controlled by adjusting the C18AA concentration. Interestingly, the ...
The development of scintillating materials is believed to reach a new step by controlling their preparation on a nanometric level. Sol-Gel chemistry offers very unique tools for nanoscale mastering of the materials preparation. In particular, shaping of the materials as thin films or nanoparticles offers new application in medical imaging. The control of doping ions dispersion thanks to soft ch...
We present a study on filamentous actin solutions containing heavy meromyosin subfragments of myosin II motor molecules. We focus on the viscoelastic phase behavior and internal dynamics of such networks during adenosine-triphosphate depletion. By combining microrheology and fluorescence microscopy, we observed a sol-gel transition accompanied by a sudden onset of directed filament motion. We i...
Surface Tension. To properly direct the Cassie-Wenzel transition using variations in the surface tension of the aqueous solution (sol ) in contact with the SH film, we first established the behavior of sol at various mass fractions of ethanol (Figure S1). The surface tension of the liquid was as high as 71.3 mN/m for pure water (water ) and as low as 21.7 mN/m for pure ethanol (EtOH ), and...
در این پژوهش دستیابی به تولید لایه های نازک سرامیکی با تکیه بر یک فناوری ساده موردنظر قرار گرفته و لایه نشانی sio2 به کمک فرایند نوین sol-gel بر روی زیرلایه هایی از جنس شیشه سودا ـ لایم انجام شده است. برای این منظور پس از آماده سازی نمونه ها و تهیه محلول sol ، عملیات لایه نشانی به روش غوطه وری در فواصل زمانی مختلف پس از ساخت محلول بر روی نمونه ها انجام شده و پس از خشک کردن، تحت عملیات پخت قرار ...
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