根

Methods In the treatment group,80 teeth of 150 cases were treated with the modified paste after the rountine drilling in the pulp canal and the enlarging and clearing of the root canal.

方法对 156例，180颗慢性根尖周围炎患牙常规开髓，清理扩大根管，采用自行配制的改良式复方根充糊剂行根管充填术。

If MB2 could not be found, to try again after cleaning the floor of pulp chamber by using 10P tip of the retrieval instruments and removal part of dentin on the location estimated by slow-speed round bur.

找到后通畅根管，若无法扩通，使用慢速圆钻在MB2根管口处向根方去除少量牙本质，结合使用EDTA再次通畅根管。

Methods: One hundred and twenty teeth with curved root canals were randomly divided into 2 groups: 74 curved root canals in group PT were prepared by ProTaper rotary Nickel-Titanium file with crown-down technique, and 75 curved root canals in group SS were prepared by K-files with step-back technique.

选择2005年6月至12月间本院口腔内科行根管治疗的120例患者（120颗牙），随机分为两组：试验组用ProTaper机用镍钛锉及冠根向预备技术预备弯曲根管74个，对照组用不锈钢K型锉及逐步后退法技术预备弯曲根管75个。

Objective To evaluate clinical effect of the handling ProTaper Nickel-titanium rotary instruments in preparation of canals of posterior teeth.Methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling ProTaper rotary instruments using step-down technique,and by K files using step-back technique for control.All teeth were obturated with lateral condensation methods.The efficiency of preparation was analyzed with ra-diographs before and after operation.

目的 评价手用ProTaper预备后牙根管的临床效果方法选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用ProTaper 锥度镍钛旋转器械逐步伸入法预备根管，对照组用K锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗后的X线片，评价后牙根管预备效果。

Methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling ProTaper rotary instruments using step-down technique,and by K files using step-back technique for control.All teeth were obturated with lateral condensation methods.The efficiency of preparation was analyzed with ra-diographs before and after operation.

选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用ProTaper多锥度镍钛旋转器械逐步伸入法预备根管，对照组用K锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗前后的X线片，评价后牙根管预备效果。

G. cutting roots from 4 surface on the position 20cm away from the stem base nor cutting roots too near from stem base e.

若断根数量太多（如距茎20厘米处4面断根），或断根位置距茎基部太近（距茎基部10厘米处1面或4面断根），都不利于叶片含钾量提高

This metallic yarn are at an ordinary yarn (such as nylon, polyester, rayon, or base itìyarn types) outside of a metallic twist together into a shape Serratula; or at a gold two-way call it a day around the silver-coated polyester yarn of the two.

这种金银丝纱线是在一根普通纱线（如锦纶、涤纶、人造丝、人造棉或基它种类纱线）外面捻合了一根金银丝成麻花状；或者在一根金银丝的周围双向交差包覆了两根涤纶纱。

The root hair morphology of cv. RM109 was observed and compared. The results indicated that in the distance of 1 cm to the apical of seed root, the number of root hair of RM109 was 19% of cv. Oochikara, and the root diameters were not different from cv. Oochikara; in the distance of 8 cm, the number of root hair and the root diameters of RM109 were 45% and 79% of cv. Oochikara, in the distance of 3 cm, the length of the longest root hair was 33% of cv. Oochikara; but the length from the apical of the seed root to root hair initiation was not different.

根毛观察比较显示，距种子根根端1 cm处的RM109根毛数是&大力&品种的19%，差异极显著，根直径与&大力&品种差异不显著；距根端8 cm处的RM109根毛数和根直径分别是&大力&品种的45%和79%，二者差异极显著；距根端3 cm处，RM109最大根毛长是&大力&品种的33%，差异极显著；RM109种子根根端到根毛发生区的长度，与&大力&品种的差异不显著。

The optimum temperature for 1601—L—1 growth was at 25℃. More than 35℃, hairy root growth and cell division were heavenly stopped.

最适合于发根生长的温度为25℃，大于35℃显著地抑制发根的生长，影响发根的根尖细胞的正常分裂。

The results showed that VAM increaced soil acid and alkaline phosphatase activity in the rhizosphere. The effect of G. margarita was the biggest.

结果表明，接种菌根真菌增加了根际土壤酸性和碱性磷酸酶活性，Gigasporamargarita菌根菌的作用大于其它两个菌根菌。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。