导抗

以研究梯形网络策动点导抗为例介绍用梯形网络组成多阶有理多项式的线路的两种方法：阻抗函数方法与导纳函数方法。

Taking the study on driving-point adpedance of ladder network for example , this paper introduced two ways of circuits of multi-order rational polynomial made up of ladder network : ways of impedance function and ways of adpedance function .

Itoh提出的谱域导抗法比较，在等效网络中引入了理想变压器元件。

Itch 's spectral domain immittance approach , the ideal transformers are used in the network .

多层螺旋CT与声导抗测试对中耳炎咽鼓管功能的评价

Functional evaluation of eustachian tube in patients with otitis media using multi-slice spiral CT and impedance audiometry

目的：观察桃金娘油辅助治疗C型鼓室导抗图的分泌性中耳炎的疗效。

AIM : To observe the therapeutic effects of myrtol in adjuvant treatment of secretory otitis media ( SOM ) with C type tympanogram .

N阶导抗函数的OTA-C电路的实现

Implementation of N Stair Immittance Function in OTA - C Circuit

DC对去脾后一定时间内的皮下荷S180小鼠可介导抗肿瘤免疫反应。

DC may induce antitumor immune reaction for splenectomy mice bearing S180 in certain time .

一周后，再测动物声导抗，ABR阈值。

After one week , the acoustic impedance and auditory brainstem response were measured again .

结果DF－521组动物鼓室导抗图由B型变为A或C型比例高于激素组和生理盐水组。

Results The rate of tympanogram from type B to A in group DF - 521 was higher than that in group hormone and nomad saline .

指出AD型的鼓室导抗图和鼓室导抗图上出现的呼吸波是否为诊断咽鼓管异常开放的灵敏指标值得探讨。

The present results indicated that the type AD of tympanogram and respiring waves which appeared in tympanogram might not be sensitive indications of diagnosing Eustachian tube closing failure .

目的：探讨介导抗凋亡基因bcl-XL转染视网膜感光细胞的有效方法。

Objective : To investigate an optimal gene transfer method for retinal photoreceptors .

方法对53例慢性鼻窦炎病人、10例健康成人做声导抗检查，采用多状态Logistic回归模型，对慢性鼻窦炎可能影响鼓室导抗图的因素进行评价。

Methods This study involved 53 patients with chronic sinusitis who underwent acoustic immittance measurements . The chronic sinusitis-related factors affecting middle ear function were evaluated with multinomial logistic regression .

而测听可信度、声导抗和ABR阈值两组间差异无统计学意义（P>005）。

No significant difference was found between the two groups in audiometry reliability , acoustic immittance and ABR ( P > 0.05 ) .

方法对19例（38耳）LVAS患者进行了纯音听阈测试、盖莱氏试验、声导抗测试及颞骨高分辨CT检查。

Methods Pure tone audiometry , Gelle 's test , acoustic impedance radiological examination were performed in the 19 patients ( 38 ears ) .

提出了一种N阶导抗元件的OTA-C模拟电路综合法，分别对接地元件和浮地元件两种情况进行讨论。

A kind of OTA-C dummy load synthesis method with N stairs immittance element is proposed . Two circuits with ground element and floating element are discussed separately .

目的探讨纯音测听、声导抗测试与仔细的鼓膜检查、电耳镜检查、鼓膜穿刺等方法对分泌性中耳炎（SOM）的诊断价值。

Objective To probe the value of pure tone checking , accoustic impedence and checking up tympanic membrane , electro-otoscopy , tympanotomy in diagnosis of SOM .

婴儿1000Hz探测音鼓室导抗测试结果分析

The Application of 1000 Hz Probe Tone Tympanometry to Infants

HLA-Ⅰ在APM成员的协助下，完成内源性抗原肽的组装、负载和提呈，介导抗肿瘤或病毒的细胞和体液免疫。

HLA - ⅰ works together with the members of APM in the assembling , loading and presentation of endogenous antigenic peptide , mediates anti-tumor or anti-viral cellular and humoral immunity .

方法分析23例听神经病的临床表现、纯音听阈、声导抗、言语听力、听性脑干反应（ABR）和畸变产物耳声发射（DPOAE）检查。

Methods Clinical findings , pure tone threshold , acoustic impedance audiometry , speech audiometry , auditory brainstem response ( ABR ) and distortion product otoacoustic emission ( DPOAE ) were analyzed in 23 cases of auditory neuropathy .

病变耳中，听阈<20dB组以及耳镜检查存在中耳病变但声导抗正常组其TEOAE亦明显低于正常耳。

Although the hearing loss was lower than 20 dB and acoustic immittance was normal at some ears with middle ear disorders , the TEOAE was obviously lower than the normal .

方法：对14例（28耳）听神经病患者进行纯音测听、声导抗、听性脑干反应（ABR）和畸变产物耳声发射（DPOAE）、言语识别率检查。

Methods : Fourteen patients ( 28 ears ) with auditory neuropathy were evaluated who accepted pure tone test , acoustic immittance , auditory brainstem response ( ABR ), distortion product otoacoustic emission ( DPOAE ) and speech discrimination score .

28耳鼓室导抗图均为A型，20耳可引出声反射，声反射阈与听阈之差平均为28dBHL。

Acoustic impedance were performed in 28 ears , and tympanogram showed type A in all the ears . Acoustic reflex were present in 20 ears , and the average difference between acoustic reflex thresholds and pure-tone thresholds was 28 dB HL .

结论采用有频率特异性的短纯音刺激的ABR，结合耳声发射、中耳声导抗能较好地评估5岁以下无法配合行为测听的儿童的听阈。

Conclusion For infants and young children who failed the behavioral hearing test , it is a good way to adapted ABR and middle ear impedance measure , transient evoked otoacoustic emission ( TEOAE ), distortion product otoacoustic emission ( DPOAE ) to estimate their thresholds .

方法用MadsenCelesta503耳声发射仪对317例（634耳）正常农村小学1~6年级学生进行听力筛查，并用耳镜、纯音测听和鼓室导抗图系列检查作为金标准，验证其结果。

Methods TEOAE was recorded with Madsen Celesta 503 in 317 ( 634 ears ) primary school children , then the results were compared with gold standard test group , including otoscopy , pure tone audiometry and tympanogram .

任意形状耦合细天线的输入导抗

The input immittances of coupled antennas of arbitrary - shaped wires

CD8+T细胞是介导抗肿瘤保护性免疫的主要效应细胞。

Protective immunity in RLM depended on CD8 + T cells .

方法对10例听骨链中断患者的临床表现、纯音测听、声导抗检查以及耳显微手术探查结果作了临床分析。

Methods Clinical analysis of 10 cases of ossicular chain interruption .

铁氧体基片微带线的谱域导抗法分析

Analysis of Spectral-Domain Immittance Approach for Microstrip Line with Ferrite Substrate

实验性中耳积液大鼠的鼓室导抗图测试

Tympanograms of Middle Ear Effusion : an Experimental Study in Rats

豚鼠鼓室导抗图正常值测试及结果分析

The Establishment of Normal Values of Tympanogram in Guinea Pigs

120例分泌性中耳炎声导抗结果回顾性分析分泌缺失性消化停止

Retrospective Analysis of Acoustic Immittance Examination of 120 with Secretory Otitis Media