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so how do we look at this question experimentally?
پس چگونه به این سوال نگاه آزمایشی داشته باشیم؟
Last Update: 2015-10-13
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experimentally, this is what we've done in the last year.
عملا این چیزی است که ما تا حال توانسته ایم در آزمایشگاه در سال گذشته انجام بدهیم.
Last Update: 2015-10-13
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its stated goal is to experimentally observe all of the proteins produced by the sequences translated from the human genome.
پروژه پروتئوم انسانهدف این پروژه در حقیقت شناسایی تمامی پروتئین‌های انسانی پس از ترجمه از روی توالی آنها است.
Last Update: 2016-03-03
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additionally, the symmetry of the experimentally measured conductance indicates that hole and electron mobilities should be nearly the same.
همچنین تقارن اندازه گیری‌های تجربی رسانندگی نشان می‌دهد که تحرک پذیری برای الکترون‌ها و حفره‌ها باید یکسان باشد.
Last Update: 2016-03-03
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at the 1978 summer school in erice he proposed the existence of broken supersymmetry in atomic nuclei, which has since been observed experimentally.
در مدرسه تابستانی در سال ۱۹۷۸ در اریس (erice) برای هسته‌های اتمی یک ابر تقارن شکسته شده پیشنهاد کرد، که این پدیده در ازمایشگاه نیز مشاهده شده است.
Last Update: 2016-03-03
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so you see the leaflets opening and closing -- of this heart valve that's currently being used experimentally to try to get it to further studies.
اینجا میتونید باز و بسته شدن دریچه های این دریچه ی قلب را ببینید که اکنون بصورت آزمایشی از آن استفاده میشه تا از آن برای تحقیقات آینده استفاده کنیم.
Last Update: 2015-10-13
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==ultracold atomic gases==superfluidity in an ultracold fermionic gas was experimentally proved by wolfgang ketterle and his team who observed quantum vortices in 6li at a temperature of 50 nk at mit in april 2005.
ابرشارگی یک گاز فرمیونی فوق سرد به صورت تجربی توسط wolfgang ketterle به اثبات رسید و تیم او گرداب‌های کوانتومی را در دمای ۵۰ نانوکلوین در mit در ماه آوریل سال ۲۰۰۵ مشاهده کردند.
Last Update: 2016-03-03
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heating and evaporation of droplets are important processes in numerous applications, including those in internal combustion engines [1,2], spray coating [3], fire suppression [4], the pharmaceutical industry [5], and agriculture [6,7]. this has stimulated intensive research to develop robust models for the description of these processes [1,8–10]. our analysis is focused primarily on ethanol/gasoline fuel blend droplets, the interest in which has been mainly stimulated by the depletion of fossil fuels and environmental concerns. the heating and evaporation of these blends have been investigated numerically and experimentally [11–14]. in these studies, however, gasoline has been approximated by isooctane or a mixture of isooctane/n-heptane, whilst the commercial gasoline fuels consist of tens of hydrocarbons [15]. the effects of fuel compositions, transient diffusion of species, temperature gradient, and recirculation inside moving droplets on their heating and evaporation have been commonly described using the discrete component (dc) model [9,16], and the effective thermal conductivity/ effective diffusivity (etc/ed) model [8]. these models have been validated against experimental data [17–19]. the dc model was used previously for the analysis of blended fuel droplet heating and evaporation, including blends of diesel/biodiesel and ethanol/gasoline fuels [17,20–24]. in these studies, however, raoult's law was assumed to be valid (the activity coefficient (ac) was assumed equal to one). unlike fossil fuels, ethanol and biodiesel fuels are polar liquids. therefore, raoult's law may not be suitable for predicting the vapour pressures of these fuel blends [25]. to address this issue, in our analysis we took into account the contributions of nonunity acs. in some studies (e.g. [26]), the wilson equation was used for the predictions of acs. the wilson equation is a simple approach, but limited to binary components. in the general case, the universal quasichemical functional–group ac (unifac) model is believed to be the most suitable for prediction of the multi-component acs [11,27]. in [28], the unifac model was used to predict the acs of 20 components in gasoline face c and 98 components in diesel fuel. this approach, however, was based on the initial molar fractions of components and droplet surface temperatures. in the current analysis, we investigate the impact of transient acs on the evolutions of blended ethanol/gasoline fuel droplet temperatures and radii. the transient droplet surface temperatures and diffusion of 21 components are taken into account using the unifac model. the governing equations and main features of the dc model used in our analysis are summarised in [8,29], and will not be discussed in this paper. the main features of the model and the implementation of unifac equations into relevant equations of the dc model are described in section 2. the results predicted by the modified dc model, using the corrected acs, are presented and discussed in section 3. the main results are summarised in section 4.
Last Update: 2020-06-13
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