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ÕâÊÇÎÒÔÚmitbbs.comµÄ»¯Ñ§°æ¿´µ½µÄÌû×Ó£¬¾õµÃºÜ²»´í¡£×ªÔعýÀ´£¬Ï£ÍûÄܸø´ó¼ÒÒ»µãÆô·¢¡£ ³ö´¦£ºhttp://www.mitbbs.com/article_t/Chemistry/31177720.html ¹¤Òµ½ç×÷Ñо¿ºÍÏóÑÀËþÀï×÷Ñо¿µÄ²»Í¬ ·¢ÐÅÈË: jn74612001 (potty training layman), ÐÅÇø: Chemistry ±ê Ìâ: ¹¤Òµ½ç×÷Ñо¿ºÍÏóÑÀËþÀï×÷Ñо¿µÄ²»Í¬ ·¢ÐÅÕ¾: BBS δÃû¿Õ¼äÕ¾ (Fri May 2 01:58:24 2008) 1¡£³É±¾¡£´óѧʵÑéÊÒÀï×öʵÑéÓжàÉÙÈ˻ῼÂÇʵÑé³É±¾£¿ÓжàÉÙÀϰå»áÒòΪÊÔ¼ÁÌ«¹ó ¶ø·ÅÆúʵÑ飿²»¶à¡£¹«Ë¾ÀïR&DÔ¤ËãºÜ¶àÊÇÒªÓÉÉú²úºÍÊг¡²¿ÃŹ²Í¬¾ö¶¨µÄ,³É±¾Ì«¸ßµÄ projectËûÃÇÄDZ߾Íͨ²»¹ý¡£ 2¡£scaling up.´óѧʵÑéÊÒÀï×ö¸ö·´Ó¦Óü¸¿Ë»ò¼¸Ê®ºÁ¿ËÔÁÏ£¬ÔÚ1x1cmµÄsubstrateÉÏ ³¤Ä¤»ò×ödevice£¬½á¹û²»´í£¬¾Í·¢ÎÄÕÂÁË¡£¹«Ë¾Àï¾ÍÒª¿¼ÂÇÈç¹û°ÑÕâ¸öprocessÒÆÖ²µ½ 12 inch wafer »ò1x1m µÄsubstrateÉÏ£¬ÊÇ·ñÄܵÃͬÑùºÃµÄ½á¹û¡£Èç¹û²»ÄÜscale up£¬ ½á¹ûÔÙºÃÒ²Êǰ××ö¡£ÓжàÉÙ½ÌÊÚдpaperµÄʱºò¿¼Âǹýscale up µÄÎÊÌ⣿ 3¡£reproducibility.×öÁË10¸öʵÑ飬ֻÓÐ5¸ö¿ÉÒÔÖØ¸´£¬´ó¼ÒÍùÍù»áÏë³ö¸÷ÖÖÀíÓɰÑ5 ¸ö²»ºÃµÄ½á¹û¸øÌÞ³ý£¬½á¹ûдpaperµÄʱºòÖ»°Ñ5¸öºÃ½á¹ûд½øÈ¥ÁË¡£¹«Ë¾ÀïÕâÑù¸ã¾ÍÍê µ°ÁË£¬×ö³öÀ´µÄ²úƷÿ´Î¶¼²»Ò»Ñù˸ÒÒª£¿ 4¡£yield. Ö»ÓÐ1%µÄ²úÂÊÖ»Òª½á¹ûºÃÕÕÑù¿ÉÒÔ·¢paper.¹«Ë¾À﹤ҵ»¯Éú²úÈç¹ûÖ»ÓÐ1%µÄ ²úÂÊ£¬ÒªËüºÎÓã¿ 5¡£¶¾º¦¡£´óѧÀï×öʵÑé»ù±¾ÉÏʲôʵ¼Ê¶¼¸ÒÓá£ÎÒ¼û¹ýÓÐÈËÔÚʵÑéÊÒÀïÓÃÑÎËáºÍÇ軯 ÄÆÖÆÇâÇèËáµÄ£¬¶øÇÒºÜÉÙ¿¼ÂÇ·ÏÆúÎïµÄÅÅ·Å¡£ÔÚ¹«Ë¾Àï¾Í±ØÐ뿼ÂÇ¡£ ¹é¸ùµ½µ×£¬¹¤Òµ½çµÄÑо¿¿¼ÂǵÄÊÇʵÓã¬×ö³öÀ´µÄ¶«Î÷ûÓÐÊг¡»ò³É±¾Ì«¸ß£¬ÕâÑùµÄÑÐ ¾¿¾Í²»»áͶ×Ê¡£´óѧÀïºâÁ¿Ò»¸ö½ÌÊÚµÄˮƽÖ÷Òª¾ÍÊÇ¿´paperµÄÖÊÁ¿ºÍÊýÁ¿£¬ÓÐÁËpaper µ×Æø²Å×㣬ÖÁÓÚÑо¿ÊÇ·ñʵÓ㬲»ÔÚ´ó¶àÊý½ÌÊڵĿ¼ÂÇ·¶Î§Ö®ÄÚ£¬¾¡¹ÜÔÚдpaperºÍ proposalʱºòËûÃÇ»á°Ñ×Ô¼ºÑо¿µÄÓ¦ÓüÛÖµ´µµÃÌ컨ÂÒ×¹¡£ ËùÒÔÏ´ÎÔÚNanoLettÉÏÔÙ¿´µ½½ÌÊÚÃǺöÓÆ×Ô¼ºµÄ²ÄÁ϶àôµÃÓÐʵÓÃǰ¾°£¬ÄãÒªÐÄÀïÓÐÊý £¬Õâǰ¾°ÓÐ99.99%µÄ¿ÉÄÜÐÔÊÇʵÏÖ²»Á˵ģ¬Ô½ÊÇfancyµÄ¶«Î÷Ô½²»ÊµÓᣠÕâÊÇ»ØÌûÖбȽϾ«²ÊÓмûµØµÄÒ»¸ö ·¢ÐÅÈË: wqs (³¤Éú»¯,¾§°¢¶·;¿ÕʯÓÍ, Öйú(Ë®ÖÐ)), ÐÅÇø: Chemistry ±ê Ìâ: Re: ¹¤Òµ½ç×÷Ñо¿ºÍÏóÑÀËþÀï×÷Ñо¿µÄ²»Í¬ ·¢ÐÅÕ¾: BBS δÃû¿Õ¼äÕ¾ (Fri May 2 15:26:21 2008) Not meant to pour cold water on this. But the below comments only applies to certain chemical industries. For example, the drug discovery program (Med Chem) is almost the exact opposite. ¸ôÐÐÈç¸ôɽ£¬every industry is unique. It is very hard to draw a univeral picture. *** indicates my take on the drug discovery industry (process chemistry is excluded because it is on the development side) 1¡£³É±¾¡£´óѧʵÑéÊÒÀï×öʵÑéÓжàÉÙÈ˻ῼÂÇʵÑé³É±¾£¿ÓжàÉÙÀϰå»áÒòΪÊÔ¼ÁÌ«¹ó ¶ø·ÅÆúʵÑ飿²»¶à¡£¹«Ë¾ÀïR&DÔ¤ËãºÜ¶àÊÇÒªÓÉÉú²úºÍÊг¡²¿ÃŹ²Í¬¾ö¶¨µÄ,³É±¾Ì«¸ßµÄ projectËûÃÇÄDZ߾Íͨ²»¹ý¡£ ***: Don't care cost. Never drop project due to high cost. As a matter of fact, the cost for research is nothing compared to massive clinical trials and marketing. 2¡£scaling up.´óѧʵÑéÊÒÀï×ö¸ö·´Ó¦Óü¸¿Ë»ò¼¸Ê®ºÁ¿ËÔÁÏ£¬ÔÚ1x1cmµÄsubstrateÉÏ ³¤Ä¤»ò×ödevice£¬½á¹û²»´í£¬¾Í·¢ÎÄÕÂÁË¡£¹«Ë¾Àï¾ÍÒª¿¼ÂÇÈç¹û°ÑÕâ¸öprocessÒÆÖ²µ½ 12 inch wafer »ò1x1m µÄsubstrateÉÏ£¬ÊÇ·ñÄܵÃͬÑùºÃµÄ½á¹û¡£Èç¹û²»ÄÜscale up£¬ ½á¹ûÔÙºÃÒ²Êǰ××ö¡£ÓжàÉÙ½ÌÊÚдpaperµÄʱºò¿¼Âǹýscale up µÄÎÊÌ⣿ ***: Don't care scalability. My job is to make a couple of miligram for biological assay. 3¡£reproducibility.×öÁË10¸öʵÑ飬ֻÓÐ5¸ö¿ÉÒÔÖØ¸´£¬´ó¼ÒÍùÍù»áÏë³ö¸÷ÖÖÀíÓɰÑ5 ¸ö²»ºÃµÄ½á¹û¸øÌÞ³ý£¬½á¹ûдpaperµÄʱºòÖ»°Ñ5¸öºÃ½á¹ûд½øÈ¥ÁË¡£¹«Ë¾ÀïÕâÑù¸ã¾ÍÍê µ°ÁË£¬×ö³öÀ´µÄ²úƷÿ´Î¶¼²»Ò»Ñù˸ÒÒª£¿ ***: Don't care about reproducibility. I only care about getting the final product, even for only once. The compound may well be useless, so there is no point to develop a robust experiment. 4¡£yield. Ö»ÓÐ1%µÄ²úÂÊÖ»Òª½á¹ûºÃÕÕÑù¿ÉÒÔ·¢paper.¹«Ë¾À﹤ҵ»¯Éú²úÈç¹ûÖ»ÓÐ1%µÄ ²úÂÊ£¬ÒªËüºÎÓã¿ ***: Again, only tiny amount is required. We frequently have reations below 5% yield. Some even below <1%. No big deal, all we want is a couple of miligram for initial test. 5¡£¶¾º¦¡£´óѧÀï×öʵÑé»ù±¾ÉÏʲôʵ¼Ê¶¼¸ÒÓá£ÎÒ¼û¹ýÓÐÈËÔÚʵÑéÊÒÀïÓÃÑÎËáºÍÇ軯 ÄÆÖÆÇâÇèËáµÄ£¬¶øÇÒºÜÉÙ¿¼ÂÇ·ÏÆúÎïµÄÅÅ·Å¡£ÔÚ¹«Ë¾Àï¾Í±ØÐ뿼ÂÇ¡£ ***: Any chemical under sun is usable for Med Chem lab. We frequently use large amount of cyanide, phosgene and other highly toxic chemicals. Again, our sole purpose is to get there fast and we don't care how we get there. ¹é¸ùµ½µ×£¬¹¤Òµ½çµÄÑо¿¿¼ÂǵÄÊÇʵÓã¬×ö³öÀ´µÄ¶«Î÷ûÓÐÊг¡»ò³É±¾Ì«¸ß£¬ÕâÑùµÄÑÐ ¾¿¾Í²»»áͶ×Ê¡£´óѧÀïºâÁ¿Ò»¸ö½ÌÊÚµÄˮƽÖ÷Òª¾ÍÊÇ¿´paperµÄÖÊÁ¿ºÍÊýÁ¿£¬ÓÐÁËpaper µ×Æø²Å×㣬ÖÁÓÚÑо¿ÊÇ·ñʵÓ㬲»ÔÚ´ó¶àÊý½ÌÊڵĿ¼ÂÇ·¶Î§Ö®ÄÚ£¬¾¡¹ÜÔÚдpaperºÍ proposalʱºòËûÃÇ»á°Ñ×Ô¼ºÑо¿µÄÓ¦ÓüÛÖµ´µµÃÌ컨ÂÒ×¹¡£ ËùÒÔÏ´ÎÔÚNanoLettÉÏÔÙ¿´µ½½ÌÊÚÃǺöÓÆ×Ô¼ºµÄ²ÄÁ϶àôµÃÓÐʵÓÃǰ¾°£¬ÄãÒªÐÄÀïÓÐÊý £¬Õâǰ¾°ÓÐ99.99%µÄ¿ÉÄÜÐÔÊÇʵÏÖ²»Á˵ģ¬Ô½ÊÇfancyµÄ¶«Î÷Ô½²»ÊµÓᣠ***: Optimistically speaking, 99.99% of the compounds a medicinal chemists makes will not be a drug. Once the data are collected, the compound and the chemistry are useless. Even for processing research, people run very high- cost chiral HPLC on a large scale just to be able to deliver on time. Time is everything. Once we have a promising drug candidate identified, anything else is fixable later. |
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