Learning Science

Learning Science - learn it with Dr C N Rao

Home Page   of Professor Chintamani Nagesa Ramachandra Rao

http://www.ignouonline.ac.in/sakshat/html/doctor.html

	Learning Science Part-I
	Learning Science part-II
	Learning Science part-III
	Learning Science part-IV

 

The Organic Reactions Wiki

 Organic Reactions A comprehensive resource which provides information about the most important and useful synthetic reactions, organized primarily by reaction type. It contains mechanism, scope, and limitations of reactions for each reaction type. 

Based on this large work, there is freely accessible wiki which provides basic information about a reaction published in this collection. this can be accessed at http://organicreactions.org/index.php/Welcome_to_the_Organic_Reactions_Wiki_Home_Page

American conventions and definitions on terms like periodicity/frequency

 It is observed that America dominates the scholarly environment, hence American conventions and definitions on terms like periodicity/frequency will be followed as is given below:

 

S No	Abbreviation	Periodicity	Frequency	Number
1.	d	Daily	once per day	365/12
2.	i	——–	three times per week	156/12
3.	c	Semi-Weekly	two times per week (‘half of a week’)	104/12
4.	w	Weekly	once per week	52/12
5.	j	——–	three times per month	36/12
6.	e	Bi-Weekly	every two weeks	26/12
7.	s	Semi-Monthly = Fortnight	two times per month (‘half of a month’)	24/12
8.	m	Monthly	once per month	12/12
9.	b	Bi-Monthly	every two months	6/12
10.	q	Quarterly	four times per year	4/12
11.	t	——–	three times per year	3/12
12.	f	Semi-Annual = Bi-Annual	two times per year (‘half of a year’)	2/12
13.	a	Annual	once per year	1/12
14.	g	Biennial	every two years	1/24
15.	h	Triennial	every three years	1/36
16.	z	——–	KNOWN: other frequencies (quadrennial – every four years, quinquennial – every five years, etc.)	1/48, 1/60 etc
17.	k	Irregular	known to be so (no determinable frequency)
18.	u	——–	UNKNOWN other frequencies