Page 181 - The International Journal of the Royal Society of Thailand Vol.XIII-2021

The International Journal of the Royal Society of Thailand
The International Journal of the Royal Society of Thailand
Volume XIII – 2021
Volume XII, 2020

• The paper should be submitted to the Editorial Board in three copies
Question 2: This is a more crucial question. How did the initial consonants
get reduced from 38 in number in ancient Thai to 21 in the present?
and an electronic file as a text file (e.g. doc).
• Figures should be numbered and stored in separate files with legends
The answer is that there were some of the initial consonants in ancient Thai
included in the main text file.
that changed which made the consonants like and merge with others as follows:
• Either English or American spelling can be used but should be

The International Journal of the Royal Society of Thailand
Volume X - 2020
consistent for the entire article.
a) Velar fricative consonants such as ฃ *x and ฅ * had their sound changed

a) Velar fricative consonants such as ฃ *x and ฅ *ɣ had their sound changed to the
to the same as that of velar aspirated stop consonants ข kh and ค *g
Article Structure
same as that of velar aspirated stop consonants ข kh and ค *g respectively,
Each article should contain the following :
respectively, resulting in a reduced number of consonants as follows:
• Title resulting in a reduced number of consonants as follows:
• Short title for page headings

• Authors and their affiliations (4 CLs : 2 Cs)
(4 CLs : 4 Cs)
(4 CLs : 2 Cs)
(4 CLs : 4 Cs)
• A concise abstract (not more than 300 words)
ข-ฃ kh
ข kh
ข kh
• Key words ฃ *x ข-ฃ kh
ฃ *x
• Main text divided into sections e.g. Introduction, Materials and
ค-ฅ *g
ค *g
Methods, Results and Conclusion
ค *g
ค-ฅ *g
• References (of all articles cited in the text)
ฅ *ɣ
ฅ *

• Table and Figure captions (numbered in sequence as they appear in

the text)
The sound of ค, ฅ *g also changed in b) as follows:
Abstract
The sound of ค, ฅ *g also changed in b) as follows:
The International Journal of the Royal Society of Thailand


The abstract should be concise and informative, not more than 300 words.
b) Voiced consonants (ค-ฅ *g, ช-ฌ *, ฑ-ฒ-ท-ธ *d, พ-ภ *b, ฟ *v, ซ *z) had
Volume X - 2020
b) Voiced consonants (ค-ฅ *g, ช-ฌ *ǰ, ฑ-ฒ-ท-ธ *d, พ-ภ *b, ฟ *v, ซ *z) had their
It should not only indicate the general scope of the article but also state the main
a) Velar fricative consonants such as ฃ *x and ฅ *ɣ had their sound changed to the
their sounds changed to that of the voiceless consonants (ข-ฃ kh, ฉ ch, ฐ-ถ th, ผ ph,
sounds changed to that of the voiceless consonants (ข-ฃ kh, ฉ ch, ฐ-ถ th, ผ ph, ฝ ph, ศ-ษ-ส s)
results and conclusions.
ฝ ph, ศ-ษ-ส s) resulting in a reduction of consonant as follows:
same as that of velar aspirated stop consonants ข kh and ค *g respectively,
resulting in a reduction of consonant as follows:
Ethical Guidelines

resulting in a reduced number of consonants as follows:
Experimental investigation papers must state in the Materials and
(22 CLs : 12 Cs)
(22 CLs : 6 Cs)

Methods section that ข-ฃ kh (4 CLs : 2 Cs)

(22 CLs : 12 Cs)
(22 CLs : 6 Cs)
ข-ฃ-ค-ฅ kh
(4 CLs : 4 Cs)
1) informed consent was obtained from all adult participants and from

ข kh
ข-ฃ kh
ข-ฃ-ค-ฅ kh
ข-ฃ kh
ค-ฅ *g
parents or legal guardians of minors, including the name of the appropriate

ค-ฅ *g
ฃ *x
institutional review board having approved the project;
ฉ-ช-ฌ ch
ฉ ch
2) the maintenance and care of experimental animals comply with the
ค *g
ค-ฅ *g
ฉ
ch
ช-ฌ *ǰ

ฉ-ช-ฌ ch

Thai National Institute of Health Guidelines for the humane use of laboratory
ฅ *ɣ
ช-ฌ *

animals or the equivalent country authority or agency;
ฐ-ถ-ฑ-ฒ-ท-ธ th
ฐ-ถ th

3) approval is obtained from the relevant ethical committee.
The sound of ค, ฅ *g also changed in b) as follows:
ฑ-ฒ-ท-ธ *d

Anant Laulertvorakul 19
b) Voiced consonants (ค-ฅ *g, ช-ฌ *ǰ, ฑ-ฒ-ท-ธ *d, พ-ภ *b, ฟ *v, ซ *z) had their
sounds changed to that of the voiceless consonants (ข-ฃ kh, ฉ ch, ฐ-ถ th, ผ ph, ฝ ph, ศ-ษ-ส s)
171
Anant Laulertvorakul 191
resulting in a reduction of consonant as follows:

(22 CLs : 12 Cs) (22 CLs : 6 Cs)
_21-0619(189-196)END.indd 191 5/1/2565 BE 09:05
ข-ฃ kh ข-ฃ-ค-ฅ kh
ค-ฅ *g
ฉ ch ฉ-ช-ฌ ch
ช-ฌ *ǰ

ฐ-ถ th ฐ-ถ-ฑ-ฒ-ท-ธ th
ฑ-ฒ-ท-ธ *d
Anant Laulertvorakul 19