±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 2247  |  »Ø¸´: 11
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

[ÇóÖú] Ó¢ÒëÖУ¬Ò»¾ä»°£¬ÖÊÆ×Ïà¹Ø£¬Ç붮רҵµÄͬѧ½ø£¬Ð»Ð»

In the Introduction they state The high resolution and sensitive system have the ability to obtain the result of elemental composition analyses .  This is true only if there are enough ions in the isotopic envelope that allow to extract valuable information about the isotopic composition of each individual ion (ion intensities must reflect the correct isotopic distribution for any given ion within the isotopic envelope).

» ²ÂÄãϲ»¶

Ëĺ£Îª¼ÒµÄÁ÷ÀËè
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hjj8151

Ìú³æ (СÓÐÃûÆø)

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
°®ÓëÓêÏÂ(½ð±Ò+1): 2012-01-17 19:58:18
remayking(½ð±Ò+2): ¡ïÓаïÖú 2012-01-18 14:55:00
sltmac(½ð±Ò+5, ·­ÒëEPI+1): 2012-02-09 15:18:09
sltmac(·­ÒëEPI-1): 2012-02-09 15:18:27
ÔÚÒýÑÔÖÐËûÃÇ˵¸ß·Ö±æÂʺÍÁéÃô¶ÈµÄϵͳ¾ßÓлñµÃÔªËØ×é³É·ÖÎö½á¹ûµÄÄÜÁ¦¡£½öµ±Âú×ãÈçÏÂËùÊöʱÕâ²ÅÊǶԵ쬼´¡°Í¬Î»Ëط⡱ÖÐÓÐ×ã¹»µÄÀë×ÓÒÔÈ¡µÃ¹ØÓÚÿ¸öµ¥¸öÀë×ÓµÄÍ¬Î»ËØ×é³ÉµÄÓмÛÖµµÄÐÅÏ¢£¨Àë×ÓÇ¿¶È±ØÐë·´Ó³¡°Í¬Î»Ëط⡱ÖÐÈÎÒ»¸ø¶¨Àë×ÓµÄÕýÈ·µÄÍ¬Î»ËØ·Ö²¼£©¡£
¡°isotopic envelope¡±Ì«×¨ÒµÁË£¬ÔÝʱ·­Òë³É¡°Í¬Î»Ëط⡱°É£¬²»ÖªµÀ¶Ô²»¡£ÆäËü·­Òë¾ø¶ÔûÎÊÌâ¡£
2Â¥2012-01-17 10:16:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
2Â¥: Originally posted by hjj8151 at 2012-01-17 10:16:46:
ÔÚÒýÑÔÖÐËûÃÇ˵¸ß·Ö±æÂʺÍÁéÃô¶ÈµÄϵͳ¾ßÓлñµÃÔªËØ×é³É·ÖÎö½á¹ûµÄÄÜÁ¦¡£½öµ±Âú×ãÈçÏÂËùÊöʱÕâ²ÅÊǶԵ쬼´¡°Í¬Î»Ëط⡱ÖÐÓÐ×ã¹»µÄÀë×ÓÒÔÈ¡µÃ¹ØÓÚÿ¸öµ¥¸öÀë×ÓµÄÍ¬Î»ËØ×é³ÉµÄÓмÛÖµµÄÐÅÏ¢£¨Àë×ÓÇ¿¶È±ØÐë·´Ó³¡°Í¬Î» ...

лл»Ø´ð£¬"isotopic envelope"ÎÒÒ²²»¶®Ê²Ã´Òâ˼£¬Ö÷Òª¾ÍÊÇÕâ´Ê²»¶®£¬Ôì³ÉÕû¾äµÄ²»Àí½â¡£
Ëĺ£Îª¼ÒµÄÁ÷ÀËè
3Â¥2012-01-17 10:19:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hjj8151

Ìú³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
°®ÓëÓêÏÂ(½ð±Ò+1): 2012-01-17 20:02:24
"isotopic envelope"û±ØÒªÀí½â°¡£¬Ò²Ã»±ØÒªÇ¿·­Ò룬ºÃ¶àרҵ´Ê»ã²»ÓÃÇ¿·­ÒëµÄ¡£±ÈÈç˵"toluene"£¬ÄãÈô²»ÖªµÀËüÊÇ¡°¼×±½¡±µÄÒâ˼ÓÐʱҲû¹ØÏµ°¡£¬Ö»ÒªÖªµÀËüÊÇÒ»ÖÖ»¯Ñ§Ò©Æ·¾ÍÐÐÁË¡£ÕâÀïÄãÖ»ÐèÖªµÀ¡°isotopic envelope¡±ÊÇ´æ·ÅºÃ¶àÀë×ӵĵط½¾ÍÐÐÁË£¬ÎÒ¾õµÃ¸ú¡°Àë×ÓÚ塱²î²»¶à£¬¿´Ñù×ÓСµã£¬^_^¡£ÈôÏë³¹µ×Ū¶®¾ÍµÃÉîÈëѧϰÕâ·½ÃæµÄרҵ֪ʶ£¨ÓÈÆäÊÇÍâÎÄÎÄÏ׺Í׍ָ£©ÁË£¬ÄǾͿ´ÄãͶÈëÖµ²»ÖµµÃÁË¡£²»¿ÉÄÜͨ¹ýһƪÎÄÕ¾Ͷ®µÄ¡£
4Â¥2012-01-17 10:28:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
Â¥: Originally posted by hjj8151 at 2012-01-17 10:28:17:
"isotopic envelope"û±ØÒªÀí½â°¡£¬Ò²Ã»±ØÒªÇ¿·­Ò룬ºÃ¶àרҵ´Ê»ã²»ÓÃÇ¿·­ÒëµÄ¡£±ÈÈç˵"toluene"£¬ÄãÈô²»ÖªµÀËüÊÇ¡°¼×±½¡±µÄÒâ˼ÓÐʱҲû¹ØÏµ°¡£¬Ö»ÒªÖªµÀËüÊÇÒ»ÖÖ»¯Ñ§Ò©Æ·¾ÍÐÐÁË¡£ÕâÀïÄãÖ»Ðè ...

лл¡£¿ÉÊÇÕâÊÇÎҵľܸåÐÅÖеÄÒ»¾ä°¡£¬ÕýÊÇÒòΪÕâ¸öisotopic envelope£¬Ê¹µÃÎÒÕû¸ö²»ÖªµÀËûÊÇÏë˵ʲôÒâ˼£¬ÎØÎØ~
Ëĺ£Îª¼ÒµÄÁ÷ÀËè
5Â¥2012-01-17 12:59:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

лл£¬¿ÉÊÇÕâÊÇÎҾܸåÐÅÖеÄÒ»¾ä£¬ÒòΪisotopic envelope²»ÖªµÀʲôÒâ˼£¬ÕûµÃÎÒ¶¼²»ÖªµÀËûÏë±í´ïʲôÒâ˼£¬ÎØÎØ~
Ëĺ£Îª¼ÒµÄÁ÷ÀËè
6Â¥2012-01-17 13:01:02
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

Ë­Äܰï°ïÎÒ°¡£¿Ð»Ð»
Ëĺ£Îª¼ÒµÄÁ÷ÀËè
7Â¥2012-01-17 20:46:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

remayking

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

µ½µ×ʲôÊÇisotopic envelope°¡£¿Ë­Äܰï°ïÎÒ°¡£¿Ð»Ð»¡£
Ëĺ£Îª¼ÒµÄÁ÷ÀËè
8Â¥2012-01-18 12:24:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sciencechn

½ð³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
°®ÓëÓêÏÂ(½ð±Ò+1): 2012-01-28 10:39:23
The collection of peaks (signals in a mass spectrum) for a
peptide containing different numbers of heavy atoms is referred to as an isotope envelope.
For a small peptide, the first (lightest) peak in the envelope is the most intense peak. This is
not the case for larger molecules in which the incorporation of naturally occurring heavy
isotopes becomes statistically more and more likely and hence the isotope envelope shifts to
higher and higher masses.
9Â¥2012-01-18 12:57:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sciencechn

½ð³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï
remayking(½ð±Ò+5, ·­ÒëEPI+1): ¡ï¡ï¡ïºÜÓаïÖú 2012-01-18 14:54:42
sltmac(½ð±Ò+2): 2012-02-09 15:18:36
isotopic envelope  Õâ¸ö¹À¼ÆÃ»ÓÐ׼ȷµØÖÐÎÄ·­Òë
Æäʵ²»ÐèÒª·­Ò룺·­ÒëµÄ»° ÎÒÈÏΪÒë³É¡°Í¬Î»ËØÀë×ÓÊø¡±»òÊÇ¡°Í¬Î»ËØÀë×Ó°ü¡±

Õâ¾ä»°µÄº¬Òå¾ÍÊÇ Äã½²¸ß·Ö±æÂÊ»òÊÇÁéÃô¶ÈµÄʱºòÓ¦¸Ã  ×¼È·µÄ¶ÔÍ¬Î»ËØµÄÀë×ÓÊø½øÐнâÎö ±ÈÈç˵µÃµ½µÄÍ¬Î»ËØÀë×Ó×é³É±ÈÀýµÈÆäËüµÄÌØÕ÷ÓëÀíÂÛ¼ÆËãÖµÏà±È½ÏÈçºÎ£¿
10Â¥2012-01-18 13:05:16
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ remayking µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 327Çóµ÷¼Á +6 ¼³Òàê» 2026-03-29 6/300 2026-03-29 13:40 by peike
[¿¼ÑÐ] 329Çóµ÷¼Á +10 Å¥¶÷Ñ© 2026-03-25 10/500 2026-03-29 13:32 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©Àí¹¤´óѧ±¾¿Æ211²ÄÁϹ¤³Ì294Çóµ÷¼Á +8 mikasaµÄΧ½í 2026-03-28 8/400 2026-03-29 12:48 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 356Çóµ÷¼Á +4 gysy?s?a 2026-03-28 4/200 2026-03-29 10:32 by ÌÆãå¶ù
[¿¼ÑÐ] 356Çóµ÷¼Á +3 gysy?s?a 2026-03-28 3/150 2026-03-29 00:33 by 544594351
[¿¼ÑÐ] ÊýÒ»Ó¢Ò»271ר˶£¨085401£©Çóµ÷¼Á£¬¿É¿ç +7 ǰÐбØÓйâ 2026-03-28 8/400 2026-03-28 23:22 by Сľ³ætim
[¿¼ÑÐ] 085701Çóµ÷¼Á³õÊÔ286·Ö +4 secret0328 2026-03-28 4/200 2026-03-28 21:09 by 15366876211
[¿¼ÑÐ] 311Çóµ÷¼Á +9 lin0039 2026-03-26 9/450 2026-03-28 13:05 by ÌÆãå¶ù
[¿¼ÑÐ] 291Çóµ÷¼Á +15 hhhhxn.. 2026-03-23 21/1050 2026-03-28 11:26 by self2008
[¿¼ÑÐ] 340Çóµ÷¼Á +5 jhx777 2026-03-27 5/250 2026-03-28 04:18 by fmesaito
[¿¼ÑÐ] »¯Ñ§308·ÖÇóµ÷¼Á +8 ÄãºÃÃ÷ÌìÄãºÃ 2026-03-23 9/450 2026-03-27 14:01 by Ñî¹âÓÚÇàÔÆ
[¿¼ÑÐ] 343Çóµ÷¼Á +4 ÔùÎÒÒ»±¾Êé 2026-03-23 4/200 2026-03-27 00:40 by wxiongid
[¿¼ÑÐ] 351Çóµ÷¼Á +4 Âó¿Ë°¢ÀÚ 2026-03-24 4/200 2026-03-27 00:32 by wxiongid
[¿¼ÑÐ] Ò»Ö¾Ô¸ºÓ¹¤´ó 081700 276Çóµ÷¼Á +4 µØÇòÈÆ×ÅÌ«Ñôת 2026-03-23 4/200 2026-03-26 14:27 by zzll406
[¿¼ÑÐ] »¯Ñ§µ÷¼ÁÒ»Ö¾Ô¸ÉϺ£½»Í¨´óѧ336·Ö-±¾¿ÆÉϺ£211 +4 СÓã°®Óлú 2026-03-25 4/200 2026-03-26 10:19 by aa331100
[¿¼ÑÐ] ´ò¹ýºÜ¶à¾ºÈü£¬085406¿ØÖƹ¤³Ì300·Ö£¬Çóµ÷¼Á +3 askeladz 2026-03-26 3/150 2026-03-26 09:08 by ¸øÄãÄã×¢ÒâÐÝÏ¢
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϺ½ 335·Ö | 0856²ÄÁÏ»¯¹¤ | GPA 4.07 | ÓпÆÑо­Àú +6 cccchenso 2026-03-23 6/300 2026-03-25 22:25 by 544594351
[¿¼ÑÐ] ¡¾2026¿¼Ñе÷¼Á¡¿ÖÆÒ©¹¤³Ì 284·Ö ÇóÏà¹Ø×¨Òµµ÷¼ÁÃû¶î +4 Ô¬Û¼Û¼ 2026-03-25 8/400 2026-03-25 14:32 by lbsjt
[¿¼ÑÐ] 292Çóµ÷¼Á +4 ¶ì¶ì¶ì¶î¶î¶î¶î¶ 2026-03-24 4/200 2026-03-24 16:41 by peike
[¿¼ÑÐ] ÇóÀÏʦÊÕÎÒ +3 zzh16938784 2026-03-23 3/150 2026-03-23 12:56 by ztnimte
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û