目的单根毛囊单位在眉毛种植中的应用和心得体会方法选用耳后较细的毛发采用FUE方法提取单根毛囊,在显微镜下经专业毛囊分离人员加工分离成单根毛囊,将分离好的单根毛囊单位种植于眉毛缺失处。结果应用FUE方法提取单根毛囊,眉毛种植60例,术后随访6~12个月,眉毛生长良好,效果满意,无并发症。有5例患者自觉密度欠佳,再次加密。结论单根毛囊单位进行眉毛种植,效果自然,无并发症,术后眉毛更浓密、更自然。

Objective TO application and experience of single hair follicle unit in planting the eyebrow Methods Use FUE method to extract single hair follicle of fine hair at rear of the ear. After separated by professional under the microscope, the single follicle units will be planted at the hair missing area in the eyebrow. Results Apply FUE method to extract single hair follicle, eyebrow plantation 60 cases and followed up satisfactory, well growing of eyebrow, no complications in the 1-12 months after the operation.Conclusion The single follicle unit of eyebrow planting is proved with natural effect without complications and the eyebrow looks bushy and natural after the operation.

以莴苣幼苗为材料,检测了分离自细果角茴香的生物碱对莴苣幼苗根生长及根毛发育的影响。结果表明:50~200μmol·L-1浓度范围内,8-甲氧基二氢血根碱对莴苣幼苗根长显著抑制;10、20和30μmol·L-18-甲氧基二氢血根碱对莴苣幼苗根毛的长度和数量有显著的抑制作用,且抑制作用均表现了浓度依赖性。通过对莴苣根尖细胞有丝分裂研究发现,50μmol·L-1的8-甲氧基二氢血根碱能显著抑制根尖细胞的有丝分裂,而且莴苣幼苗净增值率与根尖细胞的有丝分裂之间呈正相关,证明8-甲氧基二氢血根碱主要通过抑制根尖细胞有丝分裂对莴苣根的生长产生影响。

Effects of 8-methoxy dihydrosanguinarine isolated from Hypecoum leptocapum on the root growth and root hair development of Lactuca sativa seedlings were studied.The results showed that the root growth was signifi-cantly inhibited by 8-methoxy dihydrosanguinarine at the concentration of 50-200μmol??L-1;the inhibitory effect on root hairs increased with concentration ranging from 10 to 30μmol??L-1 .The inhibitory effects of tested compound on the length and number of root hairs showed a dose-dependent manner.Moreover,the mitosis of apical cells could be inhibited by 8-methoxy dihydrosanguinarine at the concentrations above 50μmol??L-1 and revealed a positive linear regression with root NGR.Thus,the effect of 8-methoxy dihydrosanguinarine on Lactuca sativa seedlings mainly ex-plored on the inhibition of the mitotic activity.

植物应对磷胁迫的方法之一是改变根系的构型.以水稻 SUMO 化 E3连接酶 SIZ1突变体 ossiz1为供试材料,研究了 OsSIZ1在水稻根发育中的作用以及其与磷胁迫、生长素之间的关系.与野生型相比,OsSIZ1抑制 ossiz1种子根和不定根的伸长,促进侧根密度的增加和根毛的增多.缺磷时,突变体 ossiz1的反应更强烈,即不定根伸长、侧根密度增大和根毛增多的趋势更加明显.说明 OsSIZ1参与调控水稻根构型的改变,低磷时效果更明显.ossiz1地上部和地下部的总磷浓度显著高于野生型,说明 OsSIZ1在水稻中负调控磷素的吸收利用.定量 RT-PCR 结果显示,ossiz1中 OsYUCCA1和 OsP IN1a/1b的相对表达量显著高于野生型,说明 OsSIZ1负调控根中生长素的合成与极性运输,并且缺磷时负调控作用减弱.结果表明,SUMO 化 E3连接酶 OsSIZ1调控缺磷条件下根构型的形成,而且这一过程可能是通过调控生长素分布完成的.

Plants cope with the low P environment by altering their root architecture.Here,we studied the role of SUMO E3 ligase SIZ1 on the root development and architecture,and the relationship among OsSIZ1 ,phosphate stress and auxin using ossiz1 mutants.Compared with wild-type (WT),the ossiz1 mutation inhibited the elongation of seminal roots and adventitious roots,promoted lateral roots formation and root hair proliferation.However,the response of the ossiz1 mutation was stronger than WT under Pi deficiency,namely,the trend of root elongation and the increase of the lateral root density and the root hair number of ossiz1 were more obvious relative to WT seedlings. This suggests that OsSIZ1 regulates the root architecture,and the effect is more obvious under Pi deficiency.The total P concentration of shoots and roots in ossiz1 is higher than WT,this suggests that OsSIZ1 negatively regulates phosphorus acquisition and use.And relative expression of OsYUCCA1 and OsP I N1a/1b in ossiz1

混凝土材料所具有的多孔隙结构是由其本身的物理、化学性质所决定的，而孔隙结构又决定了混凝土整体的强度和渗透性。将混凝土复杂的孔隙结构简化为单根毛细管，根据 Fick 定律和质量守恒原理推导出混凝土孔隙溶解控制方程，并运用 Bear 理论中关于多孔介质毛细孔渗透率的研究理论及饱和溶质运移扩散方程建立侵蚀模型。模拟结果表明，该模型能够有效地反映混凝土孔隙中固相钙离子溶解、浓度变化和孔隙边壁侵蚀厚度变化过程。

The concrete material has a porous structure due to its own physical and chem ical properties, and the pore structure determ ines the strength and permeability of concrete. In this paper, the complex porous structure of concrete was simplified to the single capillary. According to the Fick''s law and mass conservation principle, the dissolution equation of concrete pores was obtained, and the erosion model was established based on the research of capillary permeability of porous medium in Bear theory and saturated solute t ransport diffusion equations. The simulation results showed that the model can reflect the variations of dis-solution and concent ration of solid phase calcium ions and erosion thickness of side wall inpores.

以模式植物拟南芥为研究材料,探讨了Ca在拟南芥根生长发育及抵御盐胁迫过程中的重要生理作用。结果表明,低Ca条件会导致拟南芥幼苗鲜质量降低、抑制主根生长、侧根发育及根毛发育与生长。研究发现,50 mmol/L NaCl胁迫会导致对照培养植物产生1个细胞质Ca2+([Ca2+]cyt)升高峰值,为0.325μmol/L;而低Ca培养植物产生3个[Ca2+]cyt升高值,升高频率明显增多,最高达0.467μmol/L,是对照的1.40倍。由此推断,低Ca条件使植物对盐胁迫更敏感。

We choose Arabidopsis as material. The research studies on the important physiology role of calcium in root development and resistance to salt stress. In this study,the fresh weight,primary root,lateral roots and root hairs of Arabidopsis thaliana were all inhibited on the calcium deprivation media. The plants grown on control media were evoked a transient rise of cytosolic Ca2+( [ Ca2+] cyt ) by 50 mmol/L NaCl,while the plants grown on calcium deprivation media were evoked three. The peaks of signal were 0. 325,0. 476 μmol/L,respectively. It is suggested the plants were more sensitive to salt stress under the calcium deprivation condition.