Beitrage zur Tabakforschung International/ Contributions to Tobacco Research最新文献_第7页

The Determination of Benzofuran in Tobacco Smoke / Über das Vorkommen von Benzofuranen im Tabakrauch 可以确定

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1968-01-01 DOI: 10.2478/cttr-2013-0191

G. Neurath, J. Gewe, H. Wichern

引用次数: 0

A Method for the Automatic Determination of the Nitrate Content of Tobacco / Eine Methode zur automatischen Nitratbestimmung im Tabak 烟叶中硝酸盐含量的自动测定方法/烟叶中硝酸盐自动测定法

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1968-01-01 DOI: 10.2478/cttr-2013-0180

W. Schulz, F. Seehofer

引用次数: 0

The Design of an Automated Syringe-Type Smoking Machine 自动注射器式抽烟机的设计

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-10-01 DOI: 10.2478/cttr-2013-0168

R. M. Wiley, J. Ferri

{"title":"The Design of an Automated Syringe-Type Smoking Machine","authors":"R. M. Wiley, J. Ferri","doi":"10.2478/cttr-2013-0168","DOIUrl":"https://doi.org/10.2478/cttr-2013-0168","url":null,"abstract":"Abstract An automated smoking machine, and improved associated equipment, has been described. The automatic portion consists of a \"string cut-off\" technique which instantly and accurately stops the puffing action on cigarettes. This is achieved by an electronic sequence that deactivates three-way solenoid valves and vents the smoking train to the air at the syringe. Solenoid deactivation is achieved through the use of microswitches and relays. An automatic puff-counting unit records the number of puffs taken on the cigarettes on each port. The counters are pulsed by a signal generator set for 5 pulses per second. The generator is activated by a 2-second cam and microswitch attached to the 4-second cam that cycles the smoking machine. Constant puff volume and puff duration are maintained by use of individual syringe eccentric cams that allow precise volume adjustment on each port and solenoid valves that serve as intake and exhaust valves and provide positive action. The solenoid valves are activated by the 2-second cam and microswitch that is synchronized with the puffing downstroke of the syringe. The 2.0 AA± 0.2-second puff is precisely obtained through the machine's variable speed controlled gear driven electric motor. This feature yields a stable volume and duration regardless of the resistance of the cigarettes. The level of precision obtained previously on the O'Keeffe and Lieser machine was reduced by one-third by the automation developments described in this paper.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1967-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78673535","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: 3

The Toxicity of Tobacco Smoke Solutions to Proteus Vulgaris 烟草烟雾溶液对寻常变形杆菌的毒性研究

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-10-01 DOI: 10.2478/cttr-2013-0172

P. W. Brown, C. A. Fowler

引用次数: 3

Comparison of Different Instruments for the Determination of the Diameter of Cigarettes - Vergleich verschiedener Geräte zur Bestimmung des Cigarettendurchmessers 卷烟直径测定不同仪器的比较- Vergleich verschiedener Geräte zur Bestimmung des卷烟制造商

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-10-01 DOI: 10.2478/cttr-2013-0171

E. Erxleben, K. Janke

引用次数: 0

Evaluation of Dicyclohexyl and the n-Alkanes C12 to C15 in Tobacco - Über das Vorkommen des Dicyclohexyls und der n-Alkane C12 bis C15 im Tabak 对烟草中的二氧化氢和n谷C12至C15的评估

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-10-01 DOI: 10.2478/CTTR-2013-0170

G. Neurath, H. Wichern

引用次数: 0

An Inhalation Apparatus Designed for Laboratory Animals / Berauchungsapparatur für Laboratoriumstiere 一种为实验动物设计的吸入装置/ berauchungsapparatus / r Laboratoriumstiere

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-08-01 DOI: 10.2478/CTTR-2013-0166

W. Dontenwill, G. Reckzeh, L. Stadler

引用次数: 10

A Study on Pipe Smoking / Beitrag zum Studium des Pfeifenrauchens 产生烟草

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-08-01 DOI: 10.2478/CTTR-2013-0164

C. Braun, E. Osch, L. Schertz

引用次数: 0

Tobacco Products and Smoke: General Report 烟草制品和烟雾:一般报告

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-08-01 DOI: 10.2478/cttr-2013-0161

G. Neurath

{"title":"Tobacco Products and Smoke: General Report","authors":"G. Neurath","doi":"10.2478/cttr-2013-0161","DOIUrl":"https://doi.org/10.2478/cttr-2013-0161","url":null,"abstract":"Abstract During the last three and a half years remarkable progress has been made in tobacco and tobacco smoke research. The fact that tobacco and smoke constituents of interest generally occur in extremely low concentrations necessarily led to the development of sophisticated analytical methods which were found to be of general interest in microanalysis. The composition of the gaseous phase of tobacco smoke is by now well known owing to studies using a combination of high resolution gas chromatography and mass spectrometry. A great many compounds were identified for the first time in tobacco or tobacco smoke by means of analytical procedures newly developed or adapted from other research fields. Terms concerning the distribution of the total smoke to the different smoke streams have been defined, and the possibilities of selective retention of smoke components have been examined. The distribution of water consisting of tobacco moisture and of combustion water among the different smoke streams and other transportation phenomena in the burning process of a cigarette have been studied. Particle size distribution, the determination of the air permeability of cigarette paper, and the mechanical properties of tobacco have been investigated by means of physical measuring procedures.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1967-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89619589","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: 2

Animal Experiments on the Influence of Cigarette Smoke Inhalation on the Respiratory Frequency / Tierexperimentelle Untersuchungen über die Beeinflussung der Atmung während der Inhalation von Cigarettenrauch 花嘉瑞特烟吸入厂烟的影响

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1967-08-01 DOI: 10.2478/CTTR-2013-0165

K. Rücker, W. Dontenwill

{"title":"Animal Experiments on the Influence of Cigarette Smoke Inhalation on the Respiratory Frequency / Tierexperimentelle Untersuchungen über die Beeinflussung der Atmung während der Inhalation von Cigarettenrauch","authors":"K. Rücker, W. Dontenwill","doi":"10.2478/CTTR-2013-0165","DOIUrl":"https://doi.org/10.2478/CTTR-2013-0165","url":null,"abstract":"Abstract In confirmation of experimental results previously obtained the investigation of the respiratory frequency of rats and hamsters exposed to inhaled cigarette smoke by means of different principles of procedure revealed that the intake of smoke is no more guaranteed if CO-intoxication exceeds a certain level. The experimental results demonstrate by comparison that smoke inhalation at fixed intervals involves a higher risk of reflex apnea. In relation to the duration of exposure the \"open\" inhalation procedure affects the frequency of respiration and the one-minute respiratory volume to a smaller extent. The \"open\" smoking technique permits the intake of larger quantities of smoke and causes less danger to the experimental animal. Hamsters proved to be considerably less susceptible to nicotine and were, therefore, found to be more suitable for inhalation experiments. It should be pointed out that the individual animal species varied in alteration of the respiratory rate. It is once again shown that inhalation experiments are able to produce good results only on the condition that a relatively small CO-intake guarantees a sufficient respiratory frequency.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1967-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86474866","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: 3