A Normal Mode Analysis (NMA) of the Chesapeake Bay was performed using Neumann boundary conditions and COMSOL MultiPhysics (formerly known as FEMLAB). The lowest 100 eigenstates were calculated and compared to a finite difference solution. Based on the normal modes derived numerically, surface current vector fields can be calculated. The vector fields of the Chesapeake Bay provide tools for the...

Determining the changes in passive electrical properties of human tissues and the geometry changes of the body parts due to breathing and cardiac activity could be a method for monitoring these vital signs. We have designed a model with COMSOL Multiphysics to simulate a magnetic induction method for determining changes of these characteristics. Given the large number of parameters and variables...

Memristor is a novel device which act as forth fundamental circuit element envisioned by Prof. Chua in 1971. Memristor devices has great interest in research ranging from memory and logic to neuromorphic systems due to its several advantages: nonvolatality, good scalability, compatibility with CMOS technology. We study the ongoing models of memristor and compare them with known device specifica...

1 We present a software tool for simulations of flow and multi‐component solute transport in 2 two and three‐dimensional domains in combination with comprehensive intra‐phase and 3 inter‐phase geochemistry. The software uses IPhreeqc as a reaction engine to the multi‐ 4 purpose, multidimensional finite element solver COMSOL Multiphysics® for flow and 5 transport simulations. Here we used COMSOL...

Solar drying remains for developing African countries the only economical means of preserving foodstuffs which post-harvest losses sometimes reach 60%.
 It was modeled in this work, different elements that constitute a solar system by natural convection. This model is described heat, mass and momentum balance equations between exchange media.
 The initially made it possible to describ...

هدف: هدف پژوهش حاضر بررسی ویژگی‌های روان سنجی مقیاس استرس آسیب‌زا کوید-19 بود که اثرات ویروس کرونا را بر جنبه‌های مختلف زندگی مردم ایران مورد قرار می‌دهد. روش:پژوهش توصیفی از نوع همبستگی بود. جامعۀ آماری شامل کلیۀ افرد بزرگسال شهر تهران در دامنۀ سنی 17 تا 72 سال 461 نفر طریق فراخوانی اینترنتی تحقیق شرکت کردند. برای تجزیه‌وتحلیل داده‌ها دو روی‌آورد کلاسیک و نظریۀ سؤال- پاسخ نرم­افزارهای Spss نسخ...