نتایج جستجو برای: level factorial design
تعداد نتایج: 1932506 فیلتر نتایج به سال:
BACKGROUND The evaluation of more than one intervention in the same randomised controlled trial can be achieved using a parallel group design. However this requires increased sample size and can be inefficient, especially if there is also interest in considering combinations of the interventions. An alternative may be a factorial trial, where for two interventions participants are allocated to ...
در فاز غربالی، با به کارگیری طرح فاکتوریل دو سطحی (2-level factorial) حاوی نقاط مرکزی تاثیر نسبت های مختلف محلول ساکارز به میوه (2-10 برابر)، ضخامت برش های سیب (5/0-5/1 cm)، میزان کلرید کلسیم (0-5/0 %)، میزان اسید سیتریک (0-5/0 %)، بریکس شربت ساکارز در مرحله اوّل (45-60 ? )، مدت زمان نگهداری میوه ها در شربت مرحله اوّل (24-48 ساعت)، بریکس شربت ساکارز در مرحله دوّم (65-75 ? ) و مدت زمان نگهداری میوه...
Nanotechnology is forging era-defining breakthroughs across science and engineering. In particular, one-dimensional nanostructures such as nanowires, nanotubes and nanobelts are widely regarded as critical building blocks for creating the next generation of devices in electronics, optics, energy and biomedicine. Motivated by a practical problem of sequential synthesis of nanowires, we propose a...
solid lipid nanoparticles of atovaquone (atq-sln) were prepared by high shearhomogenization method using tripalmitin, trilaurin, and compritol 888 ato as the lipidmatrices and phospholipon 90h, tween 80, and poloxamer 188 as the surfactants. optimizationof the formulations was conducted using 6 sets of 24 full-factorial design based on fourindependent variables that were the number of homogeniz...
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