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Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University最新文献

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[Retention of Pt-Co magnet for dental prosthesis]. [Pt-Co磁铁在口腔修复中的保留]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
O Okuno, T Nakano, H Hamanaka, Y Kinouchi
{"title":"[Retention of Pt-Co magnet for dental prosthesis].","authors":"O Okuno,&nbsp;T Nakano,&nbsp;H Hamanaka,&nbsp;Y Kinouchi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Though Pt-Co magnet is inferior to rare-earth magnet in magnetic properties, the magnet is much superior to the corrosional resistances in oral fluids. The purpose of this investigation was to determined the retentive characteristics of Pt-Co magnet. The break away force between the magnet and XM27 stainless steel keeper were measured. The retention of phi 4x 1.5 mm Pt-Co magnet was 49 g. This retention could be increased to 172 g by using stainless steel cup type yoke. These retention were rather small, but if 3 or more couples of attachments or larger Pt-Co magnet attachment were fixed in denture, the retention level approach that of clasp or mechanical precision attachments.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Recording of the temperature distribution on a bed and its application to the assessment of body movement]. [记录床上的温度分布及其在身体运动评估中的应用]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
J X Zhou, T Tamura, T Togawa, H Mizukami
{"title":"[Recording of the temperature distribution on a bed and its application to the assessment of body movement].","authors":"J X Zhou,&nbsp;T Tamura,&nbsp;T Togawa,&nbsp;H Mizukami","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In order to assess body movements during sleep, a system which records the temperature on a bed was developed. The system consists of 16 temperature sensors and a data logger with a memory card (RAM card). The 15 temperature sensors were arranged in line with a separation of 6 cm on a flat cable which was placed between the bed sheet and the mattress in such a manner that it crossed the bed at the level of the breast. 15 temperatures on the bed and the room temperature were stored in a RAM card at interval from 30 seconds to 30 minutes. The memory card can store 504 successive data. The stored data were transferred into a micro computer. It was shown that posture changes and the body movements during sleep, could be recognised from the changes in the temperature profile, and these changes were well visualized by a three-dimensional display of the successive temperature profile on the bed.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"105-12"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13633574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Problems on the determination of intracellular free calcium concentration when measured by fura-2/AM in mast cells]. [肥大细胞fura-2/AM法测定胞内游离钙浓度的问题]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01 DOI: 10.1016/s0021-5198(19)55074-0
T. Ohashi, H. Azuma
{"title":"[Problems on the determination of intracellular free calcium concentration when measured by fura-2/AM in mast cells].","authors":"T. Ohashi, H. Azuma","doi":"10.1016/s0021-5198(19)55074-0","DOIUrl":"https://doi.org/10.1016/s0021-5198(19)55074-0","url":null,"abstract":"","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 1","pages":"59-64"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/s0021-5198(19)55074-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55532397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[17O-NMR spectra of serum in rats exposed to far-infrared radiation]. [远红外辐射大鼠血清的17O-NMR谱]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
Y Komoda, K Honda, S Inoue
{"title":"[17O-NMR spectra of serum in rats exposed to far-infrared radiation].","authors":"Y Komoda,&nbsp;K Honda,&nbsp;S Inoue","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>17O-nuclear magnetic resonance (NMR) spectra of serum were taken in rats, which had been exposed to far-infrared radiation since the prenatal period (either at 21 or at 61 days of age). No significant difference in half height width of water signal was observed between the exposed and the non-exposed rats.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"87-90"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13634828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Assessment of sensing parameters in the rate responsive cardiac pacemaker]. [速率响应型心脏起搏器传感参数的评估]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
H Saito, T Toyoshima, T Tamura, S C Su, T Togawa, K Suma
{"title":"[Assessment of sensing parameters in the rate responsive cardiac pacemaker].","authors":"H Saito,&nbsp;T Toyoshima,&nbsp;T Tamura,&nbsp;S C Su,&nbsp;T Togawa,&nbsp;K Suma","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Rate responsive cardiac pacemakers in which pacing rate is adjusted by hemodynamic and metabolic demands have been developed in recent years. Although different parameters such as body activity, QT interval, respiration rate, body temperature are used to presume metabolic demand, it is suspected that no single parameter can provide accurate estimate of metabolic demand, and hence rate responsive pacemaker by combined parameters is proposed. This study is aimed to investigate physiological parameters during exercise so as to obtain reliable pacing control algorithm. Twenty healthy volunteers were assessed by a traded treadmill exercise according to the Bruce protocol, and hart rate, QT interval, body temperatures (forehead deep body temperature, rectal, tympanic, oral and axillary temperatures) and respiration rate were monitored. The results showed that correlation coefficient between heart rate and QT interval was 0.979, and that between hart rate and respiration rate was 0.969. Hysteresis was observed when these parameters were plotted against hart rate through a whole exercise protocol.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"97-103"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13634830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Management of pacemaker patients by bathtub ECG]. [浴缸心电图对心脏起搏器患者的处理]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
H Mizukami, T Togawa, T Toyoshima, M Ishijima
{"title":"[Management of pacemaker patients by bathtub ECG].","authors":"H Mizukami,&nbsp;T Togawa,&nbsp;T Toyoshima,&nbsp;M Ishijima","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We evaluated the efficacy of a new method for recording electrocardiogram (ECG) of pacemaker patients in bathtub (bathtub ECG). ECG from the pacemaker implanted patients in the bathtub with tap water was recorded through three silver/silver chloride electrodes (4 x 4 cm) fitted on the inside wall of bathtub. Electric signal was connected to the isolated amplifier and recorded on the strip chart recorder. Contrast to the conventional method for recording standard ECG, bathtub ECG does not require body surface electrodes and is recorded at patients home. Although the amplitude of bathtub ECG was reduced approximately to a quarter of standard ECG, cardiac arrhythmia can be easily interpreted by bathtub ECG. In patients with pacemaker system, the amplitude of the pacing pulse recorded by bathtub ECG was much larger than that of QRS complex recorded by standard ECG. Therefore, we conclude that bathtub ECG would be a suitable method to follow up patients with pacemaker system.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"113-9"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13635639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Degradation of polyurethanes in aqueous environment]. [聚氨酯在水环境中的降解]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1989-01-01
Y Imai, M Watanabe, Y Kadoma
{"title":"[Degradation of polyurethanes in aqueous environment].","authors":"Y Imai,&nbsp;M Watanabe,&nbsp;Y Kadoma","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The effect of in vitro exposure to aqueous environments on the change of properties of polyurethanes was studied as a model experiment for understanding the in vivo degradation of polyurethanes. Films of three commercially available medical polyurethanes consisting of diphenylmethane diisocyanate (MDI) (Biomer, Cardiothane and TM-3) and an experimental segmented polyurethane based on hydrogenated MDI (HMDI) were immersed in phosphate buffer or HEPES buffer containing lithium chloride at pH 7.4 at 70 degrees C for up to one year. Samples were subjected to ATR-FTIR measurement, tensile testing and viscosity measurement. Stability to hydrolytic degradation increased in the order: HMDI, TM-3, Biomer and Cardiothane. This ranking was consistent with that obtained in vivo. The results suggest that an in vitro model experiment is helpful for understanding and predicting degradation performance of polyurethanes in vivo.</p>","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"23 ","pages":"41-7"},"PeriodicalIF":0.0,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13635643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Mechanical properties of upper complete denture bases reinforced with carbon and aramid fiber-cloth]. [碳纤维和芳纶纤维布增强上全口义齿基托的力学性能]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1988-01-01
H Fukuda, M Kobayashi, M Nagai, H Miyairi
{"title":"[Mechanical properties of upper complete denture bases reinforced with carbon and aramid fiber-cloth].","authors":"H Fukuda,&nbsp;M Kobayashi,&nbsp;M Nagai,&nbsp;H Miyairi","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"22 ","pages":"61-7"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14209255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Synthesis of 4-phenyl and 4-benzyl substituted phthalazinone and its derivatives]. [4-苯基和4-苄基取代的酞嗪酮及其衍生物的合成]。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1988-01-01
Y Eguchi, Y Hasegawa, M Ishikawa
{"title":"[Synthesis of 4-phenyl and 4-benzyl substituted phthalazinone and its derivatives].","authors":"Y Eguchi,&nbsp;Y Hasegawa,&nbsp;M Ishikawa","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"22 ","pages":"47-52"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14382550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metabolism of vitamin D in human promyelocytic leukemia (HL-60). 人早幼粒细胞白血病(HL-60)中维生素D的代谢。
Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University Pub Date : 1988-01-01
M Shimizu, S Yamada, C Miyaura, T Suda
{"title":"Metabolism of vitamin D in human promyelocytic leukemia (HL-60).","authors":"M Shimizu,&nbsp;S Yamada,&nbsp;C Miyaura,&nbsp;T Suda","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75958,"journal":{"name":"Iyo Kizai Kenkyujo hokoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University","volume":"22 ","pages":"53-60"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14382551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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