بزرگترین بانک مقالات علمی .:. انجمن سهند

The path of those whom you blessed ,not of those who have deserved wrath,nor of the strayers

1. Horse of a different color

2. Take it on the lamb

3. Cat got your tongue

4. Get in someone's hair

5. Jump down someone's throat

6. Shoot off one's mouth

7. Pull someone's leg

در این نسخه کلیه گرامر زبان در به صورت کامل توضیح داده شده است . 

 برای دانلود بر روی لینک زیر کلیک کنید :

دانلود کتاب

 Azan

Allah is the Greatest, Allah is the Greatest
Allah is the Greatest, Allah is the Greatest
I bear witness that there is none worthy of worship but Allah
I bear witness that there is none worthy of worship but Allah
I bear witness that Muhammad is the Messenger of Allah
I bear witness that Muhammad is the Messenger of Allah

I bear witness that Ali is the                of Allah

I bear witness that Ali is the                of Allah
Hasten to the Prayer, hasten to the Prayer
Hasten to real success, hasten to real success
Allah is the Greatest, Allah is the Greatest
There is none worthy of worship but Allah

Eghame

Allah is the Greatest, Allah is the Greatest
Allah is the Greatest, Allah is the Greatest
I bear witness that there is none worthy of worship but Allah
I bear witness that there is none worthy of worship but Allah
I bear witness that Muhammad is the Messenger of Allah
I bear witness that Muhammad is the Messenger of Allah

I bear witness that Ali is the                of Allah

 I bear witness that Ali is the               of Allah
Hasten to the Prayer, hasten to the Prayer
Hasten to real success, hasten to real success
Prayer is ready, Prayer is ready
Allah is the Greatest, Allah is the Greatest
There is none worthy of worship but Allah

The periodic table of the chemical elements is a tabular method of displaying the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.^[1] 

The Sun is a huge, glowing ball at the center of our solar system. The sun provides light, heat, and other energy to Earth. The sun is made up entirely of gas. Most of it is a type of gas that is sensitive to magnetism. This sensitivity makes this type of gas so special that scientists sometimes give it a special name: plasma. Nine planets and their moons, tens of thousands of asteroids, and trillions of comets revolve around the sun. The sun and all these objects are in the solar system. Earth travels around the sun at an average distance of about 92,960,000 miles (149,600,000 kilometers) from it.

Idesire you to be effective,jast as the necessery.

This effctiveness couldcause you to resist

Andtolerate in face of difficulties.

I wish you to be patient not only about some ones who do tiny mistakes,

But also abaut some ones who do great and irreprable mistakes.

I desire you to be symbol of petient for others

If you are young, Iamhopping not to mature so soon.

And do not behave as a young if you get mature

Do natbe happeless if you are old

Beacuse each periot of life has its sadness and happeness

So leave it to pass

I desire you to feed bird and

Listen to the song of goldfinch early in the morning

In this way,you fell joy freely

Iam hopping you plant a seed

And follow its grouing to know

How much life is for tree.

Azan

Allah is the Greatest, Allah is the Greatest
Allah is the Greatest, Allah is the Greatest
I bear witness that there is none worthy of worship but Allah
I bear witness that there is none worthy of worship but Allah
I bear witness that Muhammad is the Messenger of Allah
I bear witness that Muhammad is the Messenger of Allah

INTRODUCING AMINO ACIDS

This page explains what amino acids are, concentrating on the 2-amino acids that are biologically important. It looks in some detail at their simple physical properties such as solubility and melting pسمشoints

What are the building blocks of matter?

What are the most fundamental building blocks of all matter -- the pieces of matter that make up everything from flowers to people to galaxies and cannot be broken down into anything smaller?

Model of a Helium Atom

Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles.

Every atom contains a central core called the nucleus, made of particles called protons and neutrons. The nucleus is surrounded by mostly empty space, except for very tiny particles called electrons that orbit the nucleus. Recently, scientists have discovered that protons and neutrons are made of smaller particles known as quarks.

Today, physicists don't know of anything smaller than quarks and electrons, but they don't know for sure whether these are the simplest building blocks of matter.

 Which factors are important for you and attract your attention about him or her?
There are different answers for these questions. It depends on your culture, the way that you brought up, your customs,...
Different countries obey different rules in dating new people. For some people appearance wearing a nice suite, an elegant tie and for some others their body movements is important. Here are some nice texts about different nations in dating with new people: What do you do when you meet someone for the first time?

  

Have you ever think about your appearance?
I mean the way that you wear. As you know some people pay lot’s of attention to their own clothes.
Surely it’s obvious that others appearance is important. But you know people’s status (their category) in society force them to wear special things or act in different way. But it’s one of the factors that some people judge by this. Here is a nice text about people’s shoes and how important they are in judging.

One look at his shoes you know every thing about a man. Is he easygoing or straitlaced? Rich or poor? Messy or fussy? Hip or conservative? The artistic type? Professional? Vice president? Or middle management? From the Midwest or California?
It’s called Shoe reading:

در بيشتر ديکشنريها براي نشان دادن استرس (stress) از علامت  '  استفاده مي‌کنند. گاهي هم از حروف بزرگ استفاده مي‌شود. به عنوان مثال به کلمه‌هاي زير دقت کنيد:

magazine /,'/

letter /'/

در کلمه اول استرس روي سيلاب (يا بخش) سوم (-zine) و در کلمه دوم روي سيلاب اول (-let) قرار دارد.

هر کلمه انگليسي که داراي دو يا چند سيلاب باشد، حتماً داراي يک سيلاب استرس دار نيز مي‌باشد:

ساختار

کاربرد

1- براي بيان عملي که هم‌اکنون جريان دارد:

• She is watching the TV.

• He is working at the moment.

2- براي بيان عملي يا موقعيتي که در حال حاضر در حال وقوع مي‌باشد، اما الزاماً در همين زمان صحبت کردن در حال رخ دادن نيست:

• I'm reading an exciting book.

• He is learning Arabic.

(توجه داشته باشيد که مثلاً در جمله‌ اول، شخص گوينده ممکن

به خاطر سپردن لغتهای یک زبان خارجی می تواند یکی از بخشهای خسته کننده در فراگیری زبان باشد. خوشبختانه روشهای مختلفی برای سرعت بخشیدن و نیز لذت بخش کردن آن وجود دارد که در ادامه به آن می پردازیم:

بسياري از مشکلاتي تلفظي که زبان‌آموزان با آنها مواجه هستند در نتيجه استفاده غلط از اصواتي است که در زبان مادري خود به کار مي‌برند. بنابراين مشکلات تلفظي که شما از آن رنج مي‌بريد احتمالاً مشابه مشکلاتي است که ديگر زبان‌آموزان «هم زبان» شما هم با آن مواجه هستند. وقتي يک انگليسي‌زبان بومي (native) به شما مي‌گويد که شما (بعنوان مثال) لهجه روسي يا چيني داريد، در واقع اين نکته را تأييد مي‌کند. بسياري از برنامه‌هاي کاهش لهجه بر اساس تحقيقاتي است که اصوات خاصي را که هر گروه زباني (مثلاً فرانسوي، چيني، اسپانيايي، ژاپني و ...) موقع اداي کلمات انگليسي دارد، مشخص مي‌کنند. بعنوان مثال 70% اسپانيايي‌ زبانها در تلفظ صداي /st/ در کلمه stick مشکل دارند در حاليکه چيني زبانها هيچ مشکلي در تلفظ آن ندارند. نکته‌هاي زير به شما کمک مي‌کنند که تأثير زبان مادري خود بر انگليسي‌تان را کاهش دهيد.
 

 سريع خواني

معمولاً افراد هنگام مطالعه‌ي يک متن (مثلاً يک روزنامه) سعي مي‌کنند با حداقل تلاش و حداکثر سرعت به مضمون اصلي مطلب پي ببرند. شايد بتوان اين استراتژي را «سريع خواني» ناميد. در اين استراتژي مغز تلاش مي‌کند تا جاي ممکن کلمات کمتري را بخواند و تنها کسري از ثانيه روي هر کلمه توقف مي‌کند. ممکن است زبان‌آموزان نيز اين استراتژي را براي خواندن متون انگليسي بکار بگيرند.

حال بايد ديد اين استراتژي (سريع خواني) چه ويژگيهايي دارد:

آزمون آیلتس (IELTS= International English Language Testing System) جهت سنجش میزان آمادگی داوطلبان برای ادامه تحصیل، فراگیـری مهارتهـای تخصصـی و یـا کار و اقامـت در کشـورهـای انگلیسی زبان طراحی شـده است. ایـن آزمون مشترکاً تـوسط دانشگاه کمبریج، کنسول بریتانیـا (British Council) و مرکز آیلتس استرالیا در بیش از 500 مرکز در 120 کشور جهان برگزار می‌شود و سالانه چیزی حدود یک و نیم میلیون نفر در آن شرکت می‌کنند.

این آزمون در دو نوع مختلف موجود می‌باشد: آکادمیک (Academic) و عمومی (General Training). افرادی که قصد تکمیل تحصیلات خود در دانشگاههای انگلیسی زبان را دارند (کارشناسی به بالا) باید از نوع آکادمیک این آزمون، و افرادی که به منظور گذراندن دوره‌های کوتاه‌مدت فنی و حرفه‌ای، اخذ دیپلم، کار و یا اقامت قصد سفـر به کشورهـای انگلیسی زبان را دارند، می‌توانند از نوع عمومی این آزمون استفاده کنند.

تافل يک آزمون جـامع زبان انگليسي است که بـراي ورود به بيش از 4400 کالج و دانشگاه در ايالات متحده و کانادا، و ديـگر بخشهـاي جهان، مورد نيـاز مي‌باشد. همچنيـن خارجياني که داراي مشاغل حرفه‌اي مي‌باشند، بـراي ادامه فعاليتهاي حرفه‌ايشان در آمريکا و کانادا مرتباً به يک رتبه تافل نياز دارند.

• همه چيز درباره تافل
  مقاله‌اي بسيار مفيد که در آن مي‌توانيد اطلاعات جامع و کاملي در مورد نسخه‌هاي کتبي و کامپيوتري تافل (CBT و PBT) بدست آوريد.

• با تافل اينترنتي (iBT) آشنا شويم
  در اين مقاله نيز سعي شده است علاوه بر اينکه شما را با نسخه جديد تافل، يعني تافل اينترنتي (iBT)،  آشنا کند، تفاوتهاي عمده بين اين نسخه تافل و نسخه‌هاي قديمي‌تر تافل را نيز براي شما بازگو کند.

A screw is a shaft with a helical groove or thread formed on its surface. Its main uses are as a threaded fastener used to hold objects together, and as a simple machine used to translate torque into linear force. It can also be defined as an inclined plane wrapped around a shaft.

Threaded fastener

A screw used as a threaded fastener consists of a shaft, which may be cylindrical or conical, and a head. The shaft has a helical ridge or thread formed on it. The thread is essentially an inclined plane wrapped around a shaft. The thread mates with a complementary helix in the material.

Underneath the harvest moon
Where the ancient shadows will play and hide...
With a ghostly tune and the devil's pride...
"Stranger" whispered all the town
Has he come to save us from Satan's hand?
Leading them away to a foreign land...
Play for me, minstrel, play
And take away our sorrows...

.......?Do you want to buy a new pair of sunglasse