根

Tapirs have 14 toes altogether. Each of a tapir's front feet has four toes, and each of its back feet has three toes.

貘一共有十四根脚趾，每只前脚都有四根脚趾，后脚也各有三根脚趾。

Objective To observe the pain occurrence after root canal filling with three different kinds of materials.Methods 87 teeth for root canal treatment were divided into group A,group B and group C randomly.

根管治疗是目前公认的治疗牙髓炎和根尖周炎的首选方法[1]，但根管充填后其疼痛反应不仅增加了患者的痛苦，而且增加了医患矛盾。

Analysing ustiloxins inhibiting plant cell mitosis The inhibition experiment of growth of garlic radicle showed that there were more cells in the telophase stage in the garlic radicle dealed with culture filtrate of Ustilaginodea virens than those dealed with H2O. The cell volume of the former was bigger than that of the latter. So it seemed that ustiloxins could inhibit the cell mitosis, but not in the cell elongation.

毒素对植物细胞分裂的抑制作用分析：用大蒜根尖做抑制试验，发现用稻曲病菌培养滤液处理过的大蒜根尖呈分裂末期的细胞数目明显多于相同条件浙江大学硕士学位论文下对照的数目，抑制率为69%，且细胞明显比对照的细胞大，说明毒素抑制根尖细胞的有丝分裂，但不能抑制细胞的伸长。

A new fluotescence quenching method has been developed to determine nitrite in water samples. The method is based on the diazo-reaction between nitrite ion and thionine in dilute suifuric acid medium.

文章研究了在稀硫酸介质中亚硝酸根与硫堇发生的重氮化反应，基于硫堇的荧光强度随亚硝酸根的加入量增加而明显降低的现象，建立了荧光猝灭法测定痕量亚硝酸根的新方法。

However, MeJA treatment decreased DIMBOA and p－Hydroxybenzoic acid content of the third leaf significantly, while root DIMBOA content was increased significantly.

2MeSA处理叶片能诱导叶片中AOC基因、β－1，3葡聚糖酶基因（PR2a）基因及根中BX9基因的表达，使第三叶丁布含量降低，根中丁布含量升高，第三叶对羟基苯甲酸含量显著降低，6μL/L的MeSA处理则使根中香草酸含量升高。

After stimulating the peripheral endings of L2 DR with a train of square waves (0.8-1.2 mA, 100 Hz, 0.5 ms) for 2 s, the discharges at the distal end of transected L3 DR were recorded for 120 s.

在切断大鼠左侧L2、L3背根后，观察电刺激(刺激参数为0.8-1.2 mA，100 Hz，0.5 ms，总时程 2 s)L2背根外周端对 L3 背根放电活动的影响。

Objective: To explore the changes on expression of NT-4 and IGF-I in spared dorsal root ganglia (DRG, L6) in operated/acupuncture side and unoperated /unacupuncture side, spinal lamina II (L3, L5, L6) and Clarke' nucleus (L3) of normal adult, partial dorsal rhizotomy and acupuncture spared DRG cats so as to know the relation between NT-4, IGF-I and the plasticity of spinal cord as well as acupuncture promoting spinal cord plasticity.

目的：探讨NT-4和IGF-I在正常猫、部分去背根猫及针刺部分去背根猫的L_6背根节和脊髓Ⅱ板层(L_3、L_5、L_6)与背核(L_3)表达的时空变化，以了解该两因子在脊髓可塑性及针刺促进脊髓可塑性中的关系。

After unilateral lumbar rhizotomy, the FRAP positive area of the outermost part of contralateral lamina Ⅱ disappeared (that is,"the point of fishhook" disappeared), which indicates that some FRAP positive fibers cross from the operated side to terminate in the unoperated side.

虽然两组备用根大鼠非手术侧Ⅱ板层鱼钩状阳性反应区的钩尖有不同程度的缺失，但是吗啡组L〓阳性反应物面积大于非吗啡组，同时非手术侧L〓背根无髓纤维数也比非吗啡组非手术侧L〓背根增多50％。

For assisting identification of crude drug Herba Dendrobii. Methods Morphological and histological studies were carried out on 11 medicinal plant roots in Dendrobium Sw. by microstructural observation. The 11 species were divided into three groups according to their stem morphology: a pair fleshy-stem group, including D. chrysanthum, D. crepidatum, D. primulinum, D. hercoglossum, and D. crystallium; b thick-and rigid-stem group, including D. fimbriatum and D. aurantiacum var. denneanum; c node-or inter- node- bulgy-stem group, including D. findlayanum, D. gratiosissimum, D. pendulum, and D. wardianum. The surface descriptions of velamen were conducted for D. fimbriatum and D. aurantiacum var. denneanum which are similar in characters of cross section.

方法利用形态组织学方法，对茎多肉质的束花石斛Dendrobium chrysanthum及其易混的玫瑰石斛D.crepidatum、报春石斛D.primulinum、重唇石斛D.hercoglossum、晶帽石斛D.crystallium；茎粗硬的流苏石斛D.fimbriatum及其易混的叠鞘石斛D.aurantiacumvar.denneanum；茎节或节间肿胀的棒节石斛D.findlayanum、杯鞘石斛D.gratiosissimum、肿节石斛D.pendulum和大苞鞘石斛D.wardianum共11种药用石斛根进行显微结构研究；对根横切面结构相似的流苏石斛和叠鞘石斛，配合进行了根被表面制片观察。

It is already 20 years past since it was introduced to China in 1988. This paper reviewed the research and application of vetiver system in our agriculture, slope stabilization, and environmental protection, introduced the development and roles of China Vetiver Network, and proposed the potential of vetiver system in barren land afforestation, mine tail re-vegetation, bio-fuel, and green house effect relief.

本文回顾了香根草系统在我国农业、边坡防护、环境保护方面的研究和应用情况，介绍了香根草网络的发展和作用，并提出香根草系统在不毛之地造林、矿山植被恢复、生物燃料和缓解温室效应等方面的应用潜力。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。