نتایج جستجو برای: سیکلون cyclone

تعداد نتایج: 5834  

2014
Elizabeth A. Ritchie Scott Tyo

The primary objective is to continue to use innovative signal-processing methodologies to extract tropical cyclone (TC) structure information, including genesis likelihood from clouds clusters, intensity information, and wind field structure information from remote-sensing platforms in oceanic regions where in situ observations are sparse. This information is used to develop objective, accurate...

2017
Osezua O. Ibhadode Emmanuel O.B. Ogedengbe Marc A. Rosen

A biofuel from any biodegradable formation process such as a food waste bio-digester plant is a mixture of several gases such as methane (CH4), carbon dioxide (CO2), hydrogen sulfide (H2S), ammonia (NH3) and impurities like water and dust particles. The results are reported of a parametric study of the process of separation of methane, which is the most important gas in the mixture and usable a...

2015
P. Reutter

This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract It is well known that the storm tracks are a preferred region of stratosphere–troposphere exchange (STE), but a systematic and climatological investigation of the connection between cyclones and STE has not yet been p...

Journal: :فیزیک زمین و فضا 0
تیمور علیزاده دانشگاه تهران قاسم عزیزی دانشگاه تهران علیرضا محب الحجه دانشگاه تهران فرامرز خوش اخلاق دانشگاه تهران

today, extra tropical cyclones are recognized not only for the important influence they exert on midlatitude weather conditions but also for their integral role in the earth’s climate system. (gary luckmann, 2012). extra tropical cyclones are fundamental meteorological features and play a key role in a broad range of weather phenomena. they are a central component maintaining the global atmosph...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1392

سیکلون های جداساز یکی از متداول ترین دستگاه ها برای جداسازی فاز گسسته از جریان گاز، با استفاده از نیروهای سانتریفوژ می باشند. بطور کلی جریان گاز همراه با ذرات گرد و غبار از دهانه مماسی در بالای سیکلون وارد محفظه می شوند. نیروهای سانتریفوژ سبب جدایش ذرات از جریان گاز شده و آنها را به سمت دیواره استوانه ای و سپس به سمت دهانه خروجی غبار در پایین دیواره مخروطی هدایت می کند. نهایتا جریان گاز تمیز شد...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده فنی و مهندسی 1390

اخیراً استفاده از مارپیچ در فرآوری ذغالسنگ ریز دانه (150 تا ???? میکرون) مرسوم شده است. در کارخانه ذغالشویی زرند برای فرآوری سه جریان از جریان های ریز دانه، واحد سیکلون- مارپیچ به کار می رود. در کنسانتره واحد های جیگ و سیکلون- مارپیچ، عامل اصلیِ بالا بودن خاکستر، به ترتیب مربوط به بخش های ابعادی زیر ??? و ??? میکرون است. لذا با انتقال این جریان ها به سرندهای 5/0 میلی متری، بخش زیادی از ذرات کوچکت...

Mansour Shirvani, Mohammad Reza Zahiri Sepideh Akhbarifar Sorood Zahedi Yousef Shamsaii

In this paper a new process is presented for improving efficiency of cyclone de-dusting systems. The cyclone is coupled with a specially designed cylindrical chamber which includes a rotating tube inside it with air impinging nuzzles, drilled on the peripheral surface of the tube. The nuzzles help in pushing and throwing the particles to the outer radius distances during downward flow of du...

2002
Trevor Jim J. Gregory Morrisett Dan Grossman Michael W. Hicks James Cheney Yanling Wang

Cyclone is a safe dialect of C. It has been designed from the ground up to prevent the buffer overflows, format string attacks, and memory management errors that are common in C programs, while retaining C’s syntax and semantics. This paper examines safety violations enabled by C’s design, and shows how Cyclone avoids them, without giving up C’s hallmark control over low-level details such as d...

2004
Philip Klotzbach

5) Two metrics were evaluated to determine trends over the past twenty years. The first metric is the Accumulated Cyclone Energy (ACE) index, which is the maximum sustained wind speed squared at six-hour intervals. ACE represents an approximation of the kinetic energy generated by a tropical cyclone. ACE correlates globally at 0.97 with Emanuel’s PDI index which is the wind speed cubed at six-h...

1998

INTERFERENCES: Larger than respirable particles (over 10 μm) have been found in some cases by microscopic analysis of cyclone filters. Over-sized particles in the sample are known to be caused by inverting the cyclone assembly. Heavy dust loadings, fibers, and water-saturated dusts also interfere with the cyclone's size-selective properties. The use of cond uctive samplers is recommended to min...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید