The second molar dislocation is more common clinically.To investigate the related factors of the second permanent molar dislocation,and provide reference for the clinical diagnosis and treatment of orthodontics.From t...The second molar dislocation is more common clinically.To investigate the related factors of the second permanent molar dislocation,and provide reference for the clinical diagnosis and treatment of orthodontics.From the current clinical research,the clinical methods of orthodontic erect secondary molars are also diverse and clinical.The narrower first molar alveolar arch width,smaller ANB angle,and crowded maxillary posterior segment arch are the factors that cause the maxillary second permanent molar dislocation.The narrow alveolar arch width,the smaller SNB angle,the larger ANB angle,and the crowded lower mandibular arch are the factors leading to the dislocation of the mandibular second permanent molar.In addition,for the second mandibular molar malposition,it is particularly important to select the corrective treatment plan.It is especially important to improve the treatment.展开更多
[Objective] The experiment aimed to inquire into the regular pattern of the flavonoids content in erect type Ophiopogon jaonicus preliminarily.[Methods]In the main Ophiopogon jaonicus-producing area,we use the method ...[Objective] The experiment aimed to inquire into the regular pattern of the flavonoids content in erect type Ophiopogon jaonicus preliminarily.[Methods]In the main Ophiopogon jaonicus-producing area,we use the method of home position dynamic method to gather sample for experiments,use UV to determine the flavonoids content in Ophiopogon jaonicus and use correlation and regression method to analyze the relation between flavonoids content and the growth period of Ophiopogon jaonicus.[Results]The relation between flavonoids content(y1)and the growth period(x∥d)of erect type Ophiopogon jaonicus is:y=1.235 6lnx-4.748 9(n=7,50≤x≤730,0≤y≤3.128,r0.001=0.950 7,r=0.954 2).[Conclusion]During a determinate time(50≤x≤730),positive correlation exists between flavonoids content and the growth period of Ophiopogon jaonicus.Our research has a great importance in directing the scientific harvest and GAP production of erect type Ophiopogon jaonicus.展开更多
文摘The second molar dislocation is more common clinically.To investigate the related factors of the second permanent molar dislocation,and provide reference for the clinical diagnosis and treatment of orthodontics.From the current clinical research,the clinical methods of orthodontic erect secondary molars are also diverse and clinical.The narrower first molar alveolar arch width,smaller ANB angle,and crowded maxillary posterior segment arch are the factors that cause the maxillary second permanent molar dislocation.The narrow alveolar arch width,the smaller SNB angle,the larger ANB angle,and the crowded lower mandibular arch are the factors leading to the dislocation of the mandibular second permanent molar.In addition,for the second mandibular molar malposition,it is particularly important to select the corrective treatment plan.It is especially important to improve the treatment.
基金Supported by Crop Breeding Key Project of Eleventh Five Year Plan in Sichuan Province(2006yzgg12-9)~~
文摘[Objective] The experiment aimed to inquire into the regular pattern of the flavonoids content in erect type Ophiopogon jaonicus preliminarily.[Methods]In the main Ophiopogon jaonicus-producing area,we use the method of home position dynamic method to gather sample for experiments,use UV to determine the flavonoids content in Ophiopogon jaonicus and use correlation and regression method to analyze the relation between flavonoids content and the growth period of Ophiopogon jaonicus.[Results]The relation between flavonoids content(y1)and the growth period(x∥d)of erect type Ophiopogon jaonicus is:y=1.235 6lnx-4.748 9(n=7,50≤x≤730,0≤y≤3.128,r0.001=0.950 7,r=0.954 2).[Conclusion]During a determinate time(50≤x≤730),positive correlation exists between flavonoids content and the growth period of Ophiopogon jaonicus.Our research has a great importance in directing the scientific harvest and GAP production of erect type Ophiopogon jaonicus.
