نتایج جستجو برای: multiple response surface
تعداد نتایج: 2219804 فیلتر نتایج به سال:
Multiple responses must usually be considered when designing or developing complex products/processes. Therefore, simultaneously optimizing multiple responses is of priority concern for manufacturers hoping to gain a competitive advantage. Design of experiments (DOE) is extensively adopted in industry for determining an optimal parameter-setting or enhancing product quality. However, DOE can on...
با توجه به اهمیت علمی بالای نانوکامپوزیت های پلیمر در سال های اخیر، به دلیل بهبود خواص موادی و فرآیندپذیری آنها و با توجه به اینکه تنها نقطه ضعف این سامانه ها کاهش مقاومت ضربه آنها با افزودن نانورس است، هدف این تحقیق تهیه یک سامانه هیبریدی که هم مشخصات نانوکامپوزیت های پیشین را داشته باشد و هم این نقطه ضعف را نداشته باشد قرار دادیم. برای رسیدن به این هدف از یک فاز رابری در کنار یک سازگارکننده ب...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
I t has recently been observed that many weeks after injection of small amounts of antigen, removal of ant ibody from the circulation results in a specific, secondary-type, ant ibody response (1, 2). This observation suggests that a dynamic equilibrium between persisting immunogen and circulating antibody regulates the immune response (3), and further, that immunocompetent cells can capture ant...
BACKGROUND The purposes of this study, performed on a large sample of cancer patient-caregiver dyads, were: i) to simultaneously investigate, using an individualized quality of life (QoL) measure (Schedule for the Evaluation of Individual QoL, SEIQoL), the QoL domains freely expressed by cancer patients and their caregivers, and ii) to explore overlapping between the SEIQoL assessment and QoL a...
conclusions this study shows that an adequate nutritional support, in patients with severe burn injury, can improve sofa score. it is also more cost-effective, resulting in a shorter los in hospital. background severe burned patients developed metabolic imbalances and systemic inflammatory response syndrome (sirs), which can lead to malnutrition, impaired immunologic response, multiple organ fa...
The performance of a product is often evaluated by several quality characteristics. ptimizing the manufacturing process with respect to only one quality characteristic will not always lead to the optimum values for other characteristics. Hence, it would be desirable to improve the overall quality of a product by improving quality characteristics, which are considered to be important. The probl...
In the present study, Fe3O4 super paramagnetic nanoparticles were synthesized via co-precipitation of Fe3+ and Fe2+ chloride salts in the presence of ammonia Solution. The product was characterized by Fourier Transform Infrared spectroscopy (FT-IR), Transmission Electron Microscopy (TEM), and zeta–potential particle size distributing methods. The synt...
We examine the Rasch model for latent structure para- meters in binary and multiple response questionnaires and develop methodologies and data-analytic tools for assessing collaboration/che- ating in multiple choice tests
Test method facet is one of the factors which can have an influence on the test takers’ performance. The purpose of the current study was to investigate the effects of two different response types, multiple-choice cloze and multiple-choice test, on the pre-intermediate and intermediate test takers’ reading comprehension performance. To this end, 40 pre-intermediate and intermediate learners par...
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