Kabir Academy: 2021:A

 Kabir Academy: 2021: A 

Online Study .... Digital Diary 

02 June, 2021 

Harmonic Functions ... PDF 

Harmonic conjugate 

11.06.2021 

Quantum tunnelling , proton decay, positron or antielectron , 

A femtosecond is equal to 1000 attoseconds, or 1/1000 picosecond. 

Femtochemistry is the area of physical chemistry that studies chemical reactions on extremely short timescales (approximately 10−15 seconds or one femtosecond, hence the name) in order to study the very act of atoms within molecules (reactants) rearranging themselves to form new molecules (products).

Later in 1999, Zewail received the Nobel Prize in Chemistry for his pioneering work in this field showing that it is possible to see how atoms in a molecule move during a chemical reaction with flashes of laser light. --- https://en.wikipedia.org/wiki/Femtochemistry 

Ahmed Hassan Zewail (Arabic: أحمد حسن زويل‎, Egyptian Arabic: [ˈæħmæd ˈħæsæn zeˈweːl]; February 26, 1946 – August 2, 2016) was an Egyptian-American chemist, known as the "father of femtochemistry".[3] He was awarded the 1999 Nobel Prize in Chemistry for his work on femtochemistry and became the first Egyptian to win a Nobel Prize in a scientific field.
--- https://en.wikipedia.org/wiki/Ahmed_Zewail

 Ultrafast Science and Technology 

31 July, 2021 

Math Exercises & Math Problems: Binomial Theorem .... Binomial PDF 

11 Aug, 2021 

ভরের আপেক্ষিকতা

14 Aug-2021 

Get your GCSE science study suggestions / https://www.bbc.co.uk/bitesize/quizzes

15 Aug-2021 

 There are four heart valves within the heart:

Mitral valve

Tricuspid valve

Aortic valve

Pulmonic valve (also called pulmonary valve)

Chapter 2 Blood circulation HUMAN HEART jantung Lukis

BBC > GCSE > The circulatory system

YT video: How does human circulatory system work – 3D animation – in English

https://www.youtube.com/watch?v=SwHjwO7BnsI

16 Aug-2021 

What are examples of Semilunar valve?

Two types of semilunar valves: 

There are two semilunar valves:

Pulmonary valve – located between the right ventricle and the pulmonary trunk (pulmonary orifice). The valve consists of three cusps – left, right and anterior (named by their position in the foetus before the heart undergoes rotation).

Aortic valve – located between the left ventricle and the ascending aorta (aortic orifice). The aortic valve consists of three cusps – right, left and posterior.

Atrioventricular Valves

The atrioventricular valves are located between the atria and the ventricles. They close during the start of ventricular contraction (systole), producing the first heart sound. There are two AV valves:

Tricuspid valve – located between the right atrium and the right ventricle (right atrioventricular orifice). It consists of three cusps (anterior, septal and posterior), with the base of each cusp anchored to a fibrous ring that surrounds the orifice.

Bicuspid/Mitral valve  – located between the left atrium and the left ventricle (left atrioventricular orifice). It is also known as the bicuspid valve because it has two cusps (anterior and posterior). Like the tricuspid valve, the base of each cusp is secured to fibrous ring that surrounds the orifice. 

The superior mesenteric vein is a blood vessel that drains blood from the small intestine (jejunum and ileum). Behind the neck of the pancreas, the superior mesenteric vein combines with the splenic vein to form the hepatic portal vein.

17 Aug-2021

Nova Scotia schools offering IB 

International Baccalaureate in Nova Scotia

Analysis & Approaches HL Past Papers

19 Aug-2021 

What is Rh factor?

Rh factor, also called Rhesus factor, is a type of protein found on the outside of red blood cells. The protein is genetically inherited (passed down from your parents). If you have the protein, you are Rh-positive. If you did not inherit the protein, you are Rh-negative. The majority of people, about 85%, are Rh-positive.

Why is Rh factor important?

This protein does not affect your overall health, but it is important to know your Rh status if you are pregnant. Rh factor can cause complications during pregnancy if you are Rh-negative and your child is Rh-positive.

https://my.clevelandclinic.org/health/diseases/21053-rh-factor

20 Aug-2021 

The genome is one copy of all an organism's DNA. 

26 Aug-2021

The thymus is a specialized primary lymphoid organ of the immune system. Within the thymus, thymus cell lymphocytes or T cells mature. ... The thymus is located in the upper front part of the chest, in the anterior superior mediastinum, behind the sternum, and in front of the heart. 

The spleen is an organ in the upper far left part of the abdomen, to the left of the stomach. The spleen varies in size and shape between people, but it’s commonly fist-shaped, purple, and about 4 inches long. Because the spleen is protected by the rib cage, you can’t easily feel it unless it’s abnormally enlarged.

@KabirSir , Dhaka, Bangladesh