收声
1.The affects of slowness changes on hole diameter opposite a receiver could not be compensated completely.
2.The compensated ability varies with the difference of bed slowness and changes of hole diameter.
3.The affects of slowness changes in serious hole collapse interval are not ignored.
4.The new characteristics of borehole compensated ability of two transmitters and two receivers acoustic log system were given under a pulse resource and no attenuation ideal beds by numerical simulation.
5.The contrast table of the poorest compensated results in shale, sandstone, and dolomite was given.
6.<ABSTRACT> The arytenoid adduction and medial fixation was used to treat five patients with hoarseness caused by unilateral vocal cord paralysis. After 5to 30 months,the results were satisfactory.
8.But the main branch of ansa cervicalis nerve suture was superior to the other methods among which little difference was noted in the functional recovery, electrophysiological activity and muscle strength.
9.Results ①Abductory and adductory motion of the vocal cords in 10 sides of 6 patients were observed in the nerve-decompressed 13 sides of 8 patients and the vocal cord abductory excursion varied from 1 mm to 8 mm. The glottic chink increased to 6 mm to 12 mm during inspiration after surgery.
10.Although functional motion of vocal cord was still absent in two patients receiving nerve decompression with a course longer than 4 months and in one less than 4 months, and in all cases with unilateral vocal cord paralysis receiving ansa cervicalis anastomosis and end to end anastomosis of recurrent laryngeal nerve, these procedures did result in symmetric vibration of the vocal cords and physiological phonation.
