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yzhuang
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 3 (Ó×¶ùÔ°)
- ½ð±Ò: 3627.9
- Ìû×Ó: 199
- ÔÚÏß: 186.6Сʱ
- ³æºÅ: 315187
- ×¢²á: 2007-02-26
- ÐÔ±ð: GG
- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
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wmn1984(½ð±Ò+1): 2010-08-24 18:28:44
wmn1984(½ð±Ò+2):°ÑʣϵĽð±Ò¶¼¸øÄãÁË£¬Ì«¸ÐлÁË¡£¡£¡£¡£ 2010-08-24 18:36:56
yusen_1982(½ð±Ò+1):»¶ÓÌÖÂÛ£¡ 2010-08-24 20:07:37
americanyk(½ð±Ò+1):Thank you 2010-08-24 18:28:43
wmn1984(½ð±Ò+1): 2010-08-24 18:28:44
wmn1984(½ð±Ò+2):°ÑʣϵĽð±Ò¶¼¸øÄãÁË£¬Ì«¸ÐлÁË¡£¡£¡£¡£ 2010-08-24 18:36:56
yusen_1982(½ð±Ò+1):»¶ÓÌÖÂÛ£¡ 2010-08-24 20:07:37
americanyk(½ð±Ò+1):Thank you 2010-08-24 18:28:43
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PEGylation strategies for active targeting of PLA/PLGA nanoparticles. Journal of Biomedical Materials Research Part A PLGA was reacted with DCC and NHS in an organic solvent at 23 C to activate the carboxylic acids to the semi- stable amine-reactive activated NHS-ester of PLGA (PLGA-NHS). After a specific reaction time, the polymer mixture was filtered to remove insoluble dicyclohexyl urea byproduct. The solution was concentrated, transferred to two 45-mL Teflon centrifuge tubes (<4 mL per tube) and the polymer was precipitated with ethyl ether or -20 C methanol. The polymer was pelleted by centrifugation and the supernatant removed. The pellet was dissolved in DCM (<1 mL), precipitated, and centrifuged once more to remove excess DCC, NHS, and remaining dicyclohexyl urea byproduct. |
3Â¥2010-08-24 17:08:11
yzhuang
½ð³æ (СÓÐÃûÆø)
- Ó¦Öú: 3 (Ó×¶ùÔ°)
- ½ð±Ò: 3627.9
- Ìû×Ó: 199
- ÔÚÏß: 186.6Сʱ
- ³æºÅ: 315187
- ×¢²á: 2007-02-26
- ÐÔ±ð: GG
- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
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wmn1984(½ð±Ò+1): 2010-08-24 10:10:08
wmn1984(½ð±Ò+1):ÄܸæËßÎÒÔõôÕÒÕⲿ·ÖÎÄÏ×Âð£¿ÎÒÕÒÁ˺þö¼ÕÒ²»µ½¡£¡£¡£Ð»Ð»ÁË¡£ 2010-08-24 10:12:01
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wmn1984(½ð±Ò+1): 2010-08-24 10:10:08
wmn1984(½ð±Ò+1):ÄܸæËßÎÒÔõôÕÒÕⲿ·ÖÎÄÏ×Âð£¿ÎÒÕÒÁ˺þö¼ÕÒ²»µ½¡£¡£¡£Ð»Ð»ÁË¡£ 2010-08-24 10:12:01
yusen_1982(½ð±Ò+1):»¶ÓÌÖÂÛ£¡ 2010-08-24 20:07:29
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2Â¥2010-08-24 10:03:14
wmn1984
½ð³æ (ÕýʽдÊÖ)
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- ½ð±Ò: 843.7
- É¢½ð: 295
- ºì»¨: 4
- Ìû×Ó: 432
- ÔÚÏß: 97.8Сʱ
- ³æºÅ: 655479
- ×¢²á: 2008-11-16
- רҵ: È˹¤¾§Ìå
5Â¥2010-08-27 16:09:28
wuruqitu
Ìú¸Ëľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 19 (СѧÉú)
- ½ð±Ò: 9866
- É¢½ð: 1349
- ºì»¨: 2
- Ìû×Ó: 285
- ÔÚÏß: 499.1Сʱ
- ³æºÅ: 439683
- ×¢²á: 2007-10-18
- ÐÔ±ð: GG
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yusen_1982(½ð±Ò+1):»¶ÓÌÖÂÛ£¡ 2010-08-29 11:39:58
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yusen_1982(½ð±Ò+1):»¶ÓÌÖÂÛ£¡ 2010-08-29 11:39:58
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