검색어: particle size determination (영어 - 페르시아어)

particle size
اندازه ذره

particle size:
اانداز‌ۀ ذره:

sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample.
تعیین اندازه نمونه همان عمل انتخاب تعداد مشاهدات و تکرارها برای شامل شدن در یک نمونه آماری می‌باشد.

at most outcrops the color comes from ferric compounds; the color relates to the mineralogy and particle size.
در بسیاری از برون زدگی‌ها رنگ از ترکیبات فریک به دست می‌آید؛ رنگ به مینرالوژی و اندازه ذرات بستگی دارد.

• polymer molecules serve as nanoreactors and provide a confined medium for the synthesis (thus controlling particle size and distribution)
• مولکول های پلیمر به عنوان نانو راکتورها عمل می کنند و یک محیط محدود برای سنتز فراهم می کنند (بنابراین اندازه و توزیع ذرات را کنترل می کنند)

the particle size distribution (in table 2) of the red mud was determined in accordance with bs 3892 1 (1997), and the percentage passing the 0.045 mm sieve was 76%.
توزیع اندازه ذرات (در جدول 2) گل قرمز مطابق با bs 3892 1 (1997) تعیین شد و درصد عبور از الک 0.045 میلی متر 76٪ بود.

abstract: four direct shear (ds) apparatuses having different sizes with the specimen lengths ranging from 40 to 800 mm were constructed in the study. the vertical and shear stresses acting on the shear zone were measured as accurately as possible confirming its importance. noticeable effects of specimen shape were observed. the effects of specimen size were evaluated by performing constant pressure ds tests on a fine poorly graded sand (toyoura sand) in the small, semimedium, medium and large ds apparatuses and a well-graded sandy gravel in the medium ds apparatus. the residual shear strength of toyoura sand was independent of the specimen size and initial density. due likely to specimen size effects on both progressive failure and boundary mechanical restraint, the peak strength decreased with an increase in the specimen size. as the specimen size increased with dense toyoura sand and as the particle size increased in the medium ds tests, the shear displacement at the peak stress and the ultimate volume increase at the residual state consistently increased while the postpeak strain softening became slower. these specimen size effects can be attributed to the thickness of shear zone and the number of shear bands included in the shear zone.
تأثیر اندازه نمونه و برخی عوامل دیگر بر مقاومت و تغییر شکل خاک دانه در آزمایش برش مستقیم