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We focused the study on the synthesis methods of quinoxaline, nitration of its aromatic ring and chlorination of its heterocycle. In this paper, we thought about environmental protection, the cost of material, the feasibility of industrialization, workup easily, and obtained 2,3(1H,4H)-quinoxalinedion, 6-nitro-2,3(1H,4H)-quinoxalinedion, 6,7-dinitro-2,3(1H,4H)–quinoxalinedion, 2,3-dichlo- roquinoxaline, 6–nitro-2,3-dichloroquinoxaline,and 6,7- initro-2,3-dichloro-quinoxaline. A more reasonable, easily, efficient and simple reactive route to synthesize above-mentioned compounds was developed by systematically investigating the yield, the purity and physical character of intermediates.

本文针对喹喔啉及其芳环硝化、杂环氯代的合成进行研究，主要考虑了环保性、原料成本、产业化的可行性、反应操作的简便性等问题，获得了2，3(1H，4H)-喹喔啉二酮、6-硝基-2，3(1H，4H)-喹喔啉二酮、6，7-二硝基-2，3(1H，4H)-喹喔啉二酮、2，3-二氯喹喔啉、6-硝基-2，3-二氯喹喔啉和6，7-二硝基-2，3-二氯喹喔啉等六个中间体，考察了反应产物的产率、纯度和性状等因素，得到了更为合理、方便、实用、简洁的可供产业化的合成路线。

The optimal temperature and pH for enzyme reactivity were 30℃ and 7.7 respectively.

酶反应的最适温度和pH分别为30℃和7.7。

Our Shanghai China business card printing and membership card production companies, since 2000, every year the total wages by the extraction of 1.5% of the recurrent expenditure on education on using in staff training, through 7 years of hard work, nearly a million funding, developed a business card printing and membership card making technician persons）, toolpusher to start 10, now senior workers across the enterprise more skilled workers account for the total number of technician 34.7%, well above the proposal to "" eleventh five-year at the end of senior workers of the proportion of 25% or above.

我所在的上海中华制卡和会员卡制作公司，自2000年以来，每年把按工资总额提取的1.5%的教育经费使用在员工培训上，通过7年的努力，近百万元资金的投入，培养出制卡和会员卡制作高级技师3名、技师10名，现在整个企业高级工以上的技术工人占到技工队伍总数的34.7%，远高于国家提出的到"十一五"末（2010年）高级工以上比重达到25%的要求。

Compared to the previous software with CSPM-930a STM, the STM images gotten by my software have less drift and are more directly related to their real dimensions and geometry. The UHV-STM has been used to fabricate atomic-scale grooves by extracting the Si atoms from the Si (111)-7×7 surfaces and redeposit them to form ridges at predetermined surface sites.

利用超高真空扫描隧道显微镜，用W针尖对样品Si（111）-7×7表面的原子进行操纵，成功地在样品表面挖出了具有原子级平直边界的沟槽，并首次在样品表面布出了连续的具有一定形状的凸起的线，首次确认在样品表面布出的凸起的线是由Si原子组成的，并首次用场强梯度诱导扩散理论对针尖在样品表面的布线过程和机理进行了解释。

Second, the supply structure is reasonable, but ordinary commodity housing supply or inadequate. 2004, 6,000 yuan per square metre below the pre-sale registration of the total area of housing accounted for 55.6%, 6000-9000 yuan per square metre of commercial housing accounted for 15.7% of total 28.7%,9000 yuan.

二是供应结构趋向合理，但普通商品住房供应量还是不足。2004年，每平方米6000元以下的商品住房占预售登记总面积的55.6％，每平方米6000－9000元的商品房占28.7％，9000元以上的占15.7％。

Results:As for BUS, CT, MRI, ERCP and PTC, preoperative qualitative veracity of tumor was 81.6%(111/136), 89.3%(68/76), 93.2%(68/73), 68.4%(13/19), 83.2%(15/17), while the actual removability was 71.9%(41/57), 84.8%(38/46), 94.3%(32/35), 63.6%(7/11) and 66.7%(8/12). The overall resection rate was 30.9%.

结果： 壶腹周围癌患者行B超、CT/CTA、MRI/MRCP、PTC和ERCP检查，术前临床诊断准确率分别为81.6%（111/136）、89.3%（68/76）、93.2%（68/73）、68.4%（13/19）、83.2%（15/17），术前评价肿瘤切除准确性分别为71.9%（41/57）、84.8%（38/46）、94.3%(32/35)、63.6%(7/11)、66.7%(8/12)。

Results On day 7, 15, 30 after injection with exogenous VEGF, the mice in VEGF group were found more renascent blood vessels, splenic corpuscles, central arteries and peripheral lymphatic sheathes in the autotransplanted splenic tissues than the control group, and eventually formed more integral structure of white pulp, marginal zone and red pulp with much less fibrous tissue, while on day 60 there was no significant difference between VEGF group and the control group.

结果术后7、15、30 d注射VEGF组注射VEGF后较对照组的血管数量明显增多；术后60 d注射VEGF组注射VEGF后与对照组各时相点的组织学特征没有明显差别；术后7、15、30 d注射VEGF组KDR面积密度值高于对照组，术后60 d注射VEGF组 KDR面密度值与对照组比较无显著差别；术后7、15、30 d注射 KDR mRNA表达阳性细胞密度高于对照组，术后60 d注射VEGF组 KDR mRNA表达阳性细胞密度与对照组比较没有明显差异。

Purpuraristatus, the growth, fertility, chromosome configuration, EST isozyme etc. were analyzed in this paper. The results showed that the growth potentiality of (E. sibiricus×E. purpuraristatus) F2 and (E. purpuraristatus×E. sibiricus) F1 were much stronger than their parents, the plant height of the former was 143.2 cm. The whole plant was reseda, the latter was 129.7 cm. The spike nodding of two hybrids were in the middle of their parents, the anther was yellow; the pollen fertility was 0.02%~0.03%, seed set was 0; the average chromosome configuration of former pollen mother cell at PMC M Ⅰ was 6.90Ⅰ+14. 02Ⅱ, the latter was 7.82Ⅰ+13.59 Ⅱ, and lagging chromosome and bridge fragment were observed at meiosis anaphase Ⅰ the EST of the two hybrids F1 and their parents at tillering stage was some certain different in locus, number and intensity.

结果表明，正交F1和反交F1植株的生长势均很强，正交F1株高143.2 cm、全株浅绿色，反交F1株高129.7 cm、全株灰绿色；正、反交F1的穗型均呈双亲中间型，花药呈黄色，花粉可育率0.02%~0.03%，结实率为0，说明杂种高度不育；正交F1的花粉母细胞减数分裂中期Ⅰ平均染色体构型为6.90Ⅰ+14.02Ⅱ，反交F1为7.82Ⅰ+13.59Ⅱ，减数分裂后期丁有落后染色体和染色体桥等不规则现象；亲本及其正、反交杂种F1分某期幼叶的EST同工酶酶带的位点、数目和强弱均存在一定差异，可作为亲本及杂种在蛋白质水平识别的重要依据。

Over that same period, the general retail price index of commodities increased 7.7 percent annually.

1979年——1994年，国防费的绝对值年平均增长6.22%，而此期间全国零售物价总指数年平均上涨7.7%。

The constant nutritional arteries of the great saphenous vein-saphenous nerve on the medial foot: Perforator at medial side of the tendon of the tibialis anterior ,it is （2.27±0.43）cm distal to the intermalleolar line .it passes across the medial side of the tendon of the tibialis anterior and pierces the deep fascia between the upper and lower bundle of the inferior extensor retinaculum with a diameter of （0.72±0.04）mm;The length of it after piercing the deep fascia is （7.3±0.6）mm,It has an emerging rate of 95%; Perforator between tendons ,it is （3.02±0.39）cm distal to the intermalleolar line;it pierces the deep fascia between the tendons of tibialis anterior and extensor digitorum longus with a diameter of (0.57±0.06)mm ;The length of it after piercing the deep fascia is （7.4±0.6）mm .It has an emerging rate of 94%; A constant distal fascial perforator pierces the deep fascia between abductor hallucis muscle and medial side of first metatarsal bone （1.97±0.23）mm distal to the first metatarsophalangeal joint with a diameter of (0.50±0.03)mm.

足内侧大隐静脉-隐神经营养血管近端来自内踝前动脉较为恒定，外径较大的穿支有：踝间线远端（2.27±0.43）cm，经胫骨前肌腱内侧、伸肌下支持带上、下束间穿出，外径(0.72±0.04)mm ，穿出深筋膜的长度为（7.3±0.6）mm，出现率为95%；踝间线远端（3.02±0.39）cm，经胫骨前肌腱与趾伸肌腱穿出，外径(0.57±0.06)mm，穿出深筋膜的长度为（7.4±1.2）mm ，出现率为94%；3远端来自交通支最为恒定，外径较大的穿支于踇展肌与第一跖骨内侧缘之间穿出深筋膜，距第一跖趾并节近端（1.97±0.23）cm，直径（0.50±0.03）mm，穿出深筋膜的长度为（6.5±0.5）mm，出现率为100%。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。