查询词典 L.A.

A detection method for welding lines based on K-L algorithm is discussed. Infrared light source is applied to get high quality images of welding lines through CCD. Image template libraries for unwelded and welded lines are constructed and the welding line image is processed by K-L algorithm to match with the template libraries to judge if the welding line has been welded. The experiment shows that above method is effective with high precision and speed and it can be applied on real-time detection of welding lines.

提出计算机对所得图像进行滤波和图像分割，讨论了K-L算法的原理及其在红外焊缝图像检测中的应用；以红外光源照射焊缝，通过CCD摄取焊缝的图像，建立已焊和未焊的图像模板库，采用K-L算法对焊缝图像进行处理，并与模板库进行比较，得出焊缝是否焊接的结论；试验结果表明，该方法检测精度高，检测速度快，可以实时运用于对手工电弧焊的焊缝质量检测中。

Zostera marina L .is a marine higher angiosperm, which lives in the sea water with the salinity of 600mmol/L. Its salt-tolerance is obvious and therefore Zostera marina L .

大叶藻是海洋高等被子植物，生活于盐含量高达600mmol/L的海水中，其耐盐性之高是不言而喻的。

It's presence implies a breakthrough of a history-"l'arc-en-ciel" wished to bear a part in the memorial event that may affect a great deal to the neo-music culture in the country:the group offers the name of their hit album "ark" to this live house.

l'aarc-en-ciel/彩虹〕参加主题音乐餐厅的命名，意味着原创音乐历史新里程的开始，并将影响和推动今后原创音乐文化的发展。根据他们的倡议，将主题音乐餐厅的店名以〔l'aarc-en-ciel/彩虹〕代表唱片〔ark〕予以命名。

Strong alkaline PS resin is first turned to the form of Cu-CL complex ions, and then free and complex cyanides in effluent could be removed effectively through ion exchanger and co- mplexation, with a result of CN~- content in effluent.5mg/L and Cu~(2+)mg/L, which conform to the requirements of discharge regulations.

将通常的苯乙烯强碱树脂先转变成铜氯络离子形态，利用离子交换和络合反应可有效地去除废水中游离的和络合的氰化物，使处理后的废水中氰离子含量小于O.5mg/L，铜离子含量小于1mg/L，达到了排放要求。

Through a variety of resin filter, adsorption and elution conditions for the optimization, as well as decolorization, crystallization methods of research, this article eventually determine the strong acid cation resin HZ-001 which is at pH 3, 3BV / h, having the largest adsorption to the tryptophan; the fermentation broth were centrifuged to remove sediment,then treated with activated carbon to be decolored and then treated with strong acid cation resin HZ-001. After that,2mol/l amino acid were passed through the HZ-001 ion exchanging column,kept almost constants when the flow rate stayed 6 BV / h. At 60℃,it was condensed into the saturated state and then added Ethanol until its percentage reaching 30%. At 4 ℃ under 100rpm placed in the shaker 20h, the collection of L-tryptophan was dried up in vacuo.

本文通过对种树脂的筛选、吸附和洗脱条件的优化，以及对脱色、结晶方法的研究与摸索，最终确定强酸型阳离子树脂HZ-001在pH=3，3倍床体积流速，温度室温，对色氨酸有最大的吸附作用；将发酵液离心去沉淀并用活性炭脱色后通过HZ-001强酸型阳离子交换树脂柱，再用2mol/L的氨水6倍床体积流速在室温下进行洗脱，收集洗脱液，60℃浓缩为过饱和状态后加入30%无水乙醇，4℃下100rpm摇起晶20h，过滤搜集结晶并真空干燥得白色粉片状L-色氨酸晶体。

Our study includes four aspects. In the first aspect we study several important conditions of porcine oocytes maturation in vitro and oocytes cleavage after parthenogenetic activation and found mNCSU-23+15IU/mlPMSG+20IU/mlHCG+15% PFF+0.57mMcysteine is a good culture condition .When the Cocs are cultured in it ,the maturation rate and oocytes cleavage rate are higher than those of foreign covered. Our result are (86.7±3.35)% and (86.3±4.16)% and the highest report of foreign is(85.7±4.1)%.In the second aspect we study the effect of different chemical activations on development of porcine parthennogenetic embryo and found two best activation method. The first one is that putting the maturation MII oocytes in the 20μmol/L ionomycin for 30 minutes and then putting them in the NCSU-23 condition containing 5μg/mICB and 5mM/L6-DMAP for 3.5 hours, the oocytes cleavage rate and morulae/blastocysts development rate are (76.7±7.6)% and (37.1±6.4)%.The second one is that putting the maturation MII oocytes in the 200μM/L Thimerosal for 20 minutes and then putting them in the NCSU-23 condition containing 8mM DTT for 30 minutes

本研究分为4个部分，第一部分对影响猪卵母细胞体外成熟和孤雌激活后胚胎分裂的几个重要条件进行了比较研究，确立了一种较好的培养方法：与颗粒细胞共培养，找到了一种适合猪卵母细胞体外成熟的培养基：mNCSU-23+15IU/mlPMSG+20IU/mlHCG+15%PFF+0.57mM半胱氨酸，成熟率和分裂率分别为(86.7±3.35)%和(86.3±4.16)%，国外报道的最高成熟率为(85.7±4.1)%；第二部分对猪卵母细胞孤雌激活的化学方法进行了研究，确立了化学激活猪卵母细胞的两种最佳方法：1将成熟的去卵丘颗粒细胞的MII期卵母细胞用20μmol/Lionomycin作用30min，再将卵母细胞培养于含5μg/mlCB和5mM/L 6-DMAP(6-二甲基氨基嘌呤)的NCSU-23培养液中，卵裂率和桑囊胚发育率达到(76.7±7.6)%和(37.1±6.4)%2将成熟的去卵丘颗粒细胞的MII期卵母细胞在200μM/L的Thimerosal中处理20min，再与8mM的DTT共孵育30min，卵裂率和桑/囊胚形成率为(81.0±2.8)%和(39.6±2.7)%；第三部分对孤雌激活胚胎的培养条件进行了研究，确立了一种最佳的胚胎培养条件：在SOF简单培养基中添加颗粒细胞进行前3天的培养，然后转入添加胎牛血清的NCSU—23培养基并和输卵管上皮细胞进行后期的培养，其桑椹胚和囊胚的发育率为(59.5±3.2)%；第四部分研究了IGF-I

Whenadministrated to rings precontracted with 1μmol·L-1 PE in the absence ofextracellular Ca2+, a second extracelluar-calcium-dependent vasoconstrictioninduced by restoration of extracellular Ca2+ were also reduced by pretreatment of 50-200μmol·L-1 MLB dose-dependently.

在复钙实验中观察到，MLB 50-200μmol·L-1 不仅抑制PE 1μmol·L-1 诱导的内钙依赖性血管收缩，而且对复钙后外钙依赖性的血管收缩也有抑制作用。

The results showed as following: NMB was suitable for the callus induction, and MS for differentiation.500 mg/L of Glu or Arg redounded to the callus induction.All the cultures were kept under dark, 25-28 ℃, pH 5.8 for callus induction; and 25-28 ℃, 1 500-2 000 lx,12-14 h/d,pH 5.8 for differentiation.6-BA shows a significant result on the growth of callus;The optimal concentration of hygromycin is 50 mg/L.

结果表明：NMB培养基适合水稻成熟胚盾片愈伤组织诱导，MS培养基适合愈伤分化；500 mg/L谷氨酰胺或精氨酸有利于愈伤组织的形成；培养条件：愈伤组织诱导时温度25～28 ℃，暗培养，pH 5.8；分化时温度25～28 ℃，光照1 500～2 000 lx，12～14 h/d，pH 5.8；6-BA对继代过程中愈伤组织的生长有促进作用；潮霉素筛选的最佳浓度为50 mg/L。

Samples were saponified with 20 g/L sodium hydroxide. The sexual hormones were then extracted with dichloromethane-acetic acetate (40∶1, v/v) under acidic conditions (pH 3, adjusted with 1 mol/L HCl ). An XTerraTMRP18 column was employed and a mixture of water-methanol-acetonitrile (50∶32∶18, v/v) was used as mobile phase. The seven sexual hormones were detected at 230 nm. The average spiked recoveries for the seven sexual hormones ranged from 75.6% to 97.8% with relative standard deviations of 1.9% to 7.2%. The linear ranges of determination were from 5 to 50 mg/L with correlation coefficients of 0.9999, and the limits of detection were from 3.7 to 12 ng.

先在试样中加入20 g/L氢氧化钠溶液与油脂进行皂化反应，然后用二氯甲烷-乙酸乙酯(体积比为40∶1)混合液在酸性条件下(pH 3)萃取，选择XTerraTMRP18色谱柱，以水-甲醇-乙腈(体积比为50∶32∶18)混合液为流动相，在波长230 nm处检测。7种性激素分离良好并排除了样品中杂质峰的干扰，低、高浓度平均回收率范围为75.6%~97.8%；相对标准偏差为1.9%~7.2%；检出限为3.7~12 ng。

After optimizing the expression conditions, a higher production could be obtained when GS115-proCPB was induced in BMGY(pH 6.0), at 28℃, with addition of 0.5% casein acid, 3 mmol/L PMSF, and 0.5% methanol per 12 h. The yield of recombinant protein reached 500 mg/L, and achieved over 94% of total protein in the culture supernatant.

通过表达条件的优化，使用BMGY(pH 6.0)培养基，添加0.5%的酪蛋白水解物和3 mmol/L的PMSF，于28 ℃培养，每隔12 h补加0.5%的甲醇，重组酵母GS115-proCPB 表达的重组蛋白可达500 mg/L 以上，表达的目的蛋白占总蛋白的94%以上。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。