{"title":"Antenna-to-input stage matching for lowest noise figure in animal-tracking receivers.","authors":"J J Potgieter","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>There is a difference in designing the antenna-to-input stage matching in receivers for optimum noise figure and maximum power transfer. The former is the predominant requirement for animal-tracking receivers, but tests have shown that this is not always attained in practice although the design procedure is known. A simple theoretical analysis explains how this difference arises and is supported by test results for a very sensitive tracking receiver.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"7 3-4","pages":"199-205"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18228918","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}
{"title":"Fifth International Symposium on Biotelemetry. Program and abstracts.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"7 1","pages":"1-56"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17169282","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}
{"title":"Determination of fish swimming speed by ultrasonic telemetry.","authors":"F A Voegeli, D G Pincock","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Design of a small and simple sensor for direct measurement of swimming speed of fish and its incorporation into ultrasonic telemetry transmitters is described. The sensor used measures the speed of rotation of a free-wheeling propeller which is exposed to water flow. Two transmitters incorporating this sensor are described. The first is a very simple one providing swimming speed while the second incorporates two temperature sensors as well.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"7 3-4","pages":"215-20"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18207716","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}
{"title":"Activity recording of radio-tagged animals.","authors":"G Cederlund, P A Lemnell","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A system for automatic activity recording of free-living animals instrumented for radio tracking is described. Technical details are given on a recorder, based on a frictionless transducer assuring extreme accuracy (Gould Brush 220 and 222). Activity separation from chart roll diagrams is possible for inactivity (resting, lying, etc.) and some activity performances like moving while foraging on a restricted area, steady movements of a walking pace, and rapid movements (running and jumping). Distinction between different activities could be done with an accuracy of less than 1 min. Examples from recorded data of an instrumented free-living roe deer and a mountain hare at the Grimsö Research Area are shown. For both species daily activity pattern is more or less related to sunrise and sunset, when activity reaches its highest value. Except for the roe deer in winter, day activity is lower than during night. The mean length of active periods in roe deer is fairly equal between winter and summer while mean length of inactive periods is significantly extended in winter. This could be explained by the digestive processes in relation to food quality.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"7 3-4","pages":"206-14"},"PeriodicalIF":0.0,"publicationDate":"1980-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18228919","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}
{"title":"Clinical suitability and accuracy of a new combined system for the transcutaneous and intravascular determination of PO2.","authors":"D Kettler, G Hentze","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The clinical suitability and accuracy of the Hoffmann-La Roche continuous oxygen partial pressure measuring system, consisting of transcutaneous and intravascular probes, modules and recorder, was tested in routine use in a unit for vascular and heart surgery of the University Clinic in Göttingen. The stability of the system was good, accuracy was sufficient for clinical purposes (compared with a conventional discrete blood gas analysis technique) and practical suitability was good in routine use. The unit was simple to use, provided preparatory and calibratory steps were completed with necessary care and precision. Based on our experience with the unit, it is correct to say that it represents a refined and sufficiently accurate method suitable for use under clinical conditions. The need for strict adherence to the operating instructions must, however, be emphasized if incorrect measurements are to be avoided.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 1-2","pages":"66-74"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11692416","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}
C N McLeod, R Harding, P Johnson, M E McClelland, P L Whyte
{"title":"Studies on the control of respiration and behaviour during development in ewe-reared lambs.","authors":"C N McLeod, R Harding, P Johnson, M E McClelland, P L Whyte","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Radiotelemetric recordings have been made in a series of newborn lambs with implanted electrodes and transducers and an external back-pack transmitter. Cardiac, respiratory and behavioural data have been gathered. These data have been analysed firstly with respect to age. The cardiac and respiratory data have then been related to both sleep state and age. An unexpected rise in both heart and respiratory rates was found after birth and marked differences were obvious in respiratory control in REM and non-REM sleep states.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 4","pages":"171-5"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11445494","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}
{"title":"A portable smoking pattern recorder.","authors":"D E Creighton, M J Noble, R T Whewell","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An instrument has been developed which can be used to record the smoking patterns of human smokers in almost any location. The smoker is required to smoke the cigarette through an orifice plate cigarette holder connected to the recorder. The smoking pattern data are recorded onto a standard audio cassette as pressure and flow signals together with timing impulses and speech. The instrument is battery powered and can be built into a small brief case. The four channels of data are decoded on a separate instrument, which uses the timing signals to synchronise a data logger, thus making the whole system independent of tape speed errors. The speech channel is used to identify the smoker, cigarette, location, etc. Comparisons have been made of the performance of the portable recorder and a laboratory smoking analyser and data logger. It was found that data decoded from the portable recorder are generally within 1% of the values recorded directly on the laboratory instrument.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 4","pages":"186-91"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11730895","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}
{"title":"A general-purpose implantable multichannel telemetry system for physiological research.","authors":"S J Gschwend, J W Knutti, H V Allen, J D Meindl","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The majority of physiologically significant parameters can be accurately measured with relatively simple transducers and with a minimum of sophisticated electronics; such parameters include temperature, pressure, and electrical activity and generally require less than a 200 Hz bandwidth. In most experiments, however, measurements at multiple sites are needed to characterize fully a particular response, and the use of totally implantable telemetry systems becomes attractive as the problems of percutaneous leads in conscious animals are compounded in proportion to the number of sensors. These systems have been produced in limited quantities because a large number of components and long assembly times are necessary to provide simple amplifications and signal processing in a small implantable package. A new six-channel system incorporates all signal processing on a single integrated circuit, and only one CMOS divider chain and an integrated telemetry transmitter are required for support. This high level of integration accelerates assembly time and increases reliability by minimizing the interconnections. Such advancements are essential before the full potential of implantable telemetry can be realized. This paper details the performance of this system during initial applications requiring pressure, bioelectrical, or temperature telemetry.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 3","pages":"107-17"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11713134","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}
{"title":"Continuous monitoring of arterial oxygen partial pressure. Contributions to a workshop, Basel, June 7, 1978.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 1-2","pages":"1-90"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11262334","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}
{"title":"Is ECG monitoring in the operating room cost effective?","authors":"D Hur, J S Gravenstein","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>ECG monitoring during anesthesia detects many arrhythmias, even in healthy patients. The clinical significance of these arrhythmias is uncertain. However, a conservative analysis of the cost of ECG monitoring in the USA reveals that the prevention of cardiac arrests occurring in 1 of 3,500 cases is quite cost effective. Routine ECG monitoring for all anesthetics in the USA is recommended.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"6 4","pages":"200-6"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11337871","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}