Journal of research of the National Bureau of Standards (1977)最新文献_第8页

A Density Comparison of Silicon Artifacts Between NML (Australia) and NBS (U.S.). NML（澳大利亚）和NBS（美国）之间硅伪影的密度比较。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.016

J B Patterson, R S Davis

引用次数: 3

Mass Comparator for In-Situ Calibration of Large Mass Standards. 用于大质量标准品现场校准的质量比较器。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.017

R M Schoonover

引用次数: 1

INTERNATIONAL ASSEMBLY DISCUSSES MECHANISMS OF DNA DAMAGE, REPAIR. 国际会议讨论DNA损伤和修复机制。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.021

Michael G Simic

{"title":"INTERNATIONAL ASSEMBLY DISCUSSES MECHANISMS OF DNA DAMAGE, REPAIR.","authors":"Michael G Simic","doi":"10.6028/jres.090.021","DOIUrl":"https://doi.org/10.6028/jres.090.021","url":null,"abstract":"For five days, 60 invited speakers, 11 5 contributors and more than 200 additional attendees probed the mysteries of DNA at the International Conference on \"Mechanisms of DNA Damage and Repair: Implications for Carcinogenesis and Risk Assessment,\" held at 148S. Donald R. Johnson, director of NBS' National Measurement Laboratory and the chairman of the organizing committee,' opened the June 2-7 conference and introduced Ernest Ambler, director of NBS, who greeted the distinguished gathering of foremost experts in the field. The conference chairman, Michael G. Simic, ralsed the question: \"How do we protect ourselves from natural and man-created hazards which damage DNA, and to which we are exposed on a daily basis?\" Meeting for the first time to exchange ideas and perceptions of future trends were scientists dealing with topics as diverse as DNA and protein damage, DNA repair enzymes, the consequences of unrepaired DNA or faulty repair of DNA, site-specific DNA binding drugs, dosimetry of exposure to genotoxic agents, DNA damage in risk assessment, and the role of science in regulatory decisions. The conference was subdivided into an introduction, three scientific sections, and a poster exhibition. The three sections \"Mechanisms of DNA Damage,\" \"DNA Repair and Consequences,\" and \"Risk Assessment\" were chaired by distinguished veterans in those fields: George Scholes, Larry Grossman, and Arthur D. Upton, respectively. Each section was further subdivided into half-day sessions. In all of the sessions the primary objective was to discuss the mechanisms of phenomena at the molecular level. As was pointed out repeatedly, we are exposed to many actual and potential hazards. It is now becoming increasingly clear that we cannot devote all our resources to the investigation of hazardous aspects of all agents to which we are or might be exposed. Consequently, mechanistic understanding of deleterious processes is becoming necessary to assure predictability","PeriodicalId":93321,"journal":{"name":"Journal of research of the National Bureau of Standards (1977)","volume":"90 4","pages":"321-326"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6692282/pdf/jres-90-321.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39473796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metrics and Techniques to Measure Microcomputer Productivity. 测量微型计算机生产率的标准和技术。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.019

Wilma M Osborne, Lynne Rosenthal

引用次数: 0

MICROBES PLAY A CONSIDERABLE ROLE IN CORROSION. 微生物在腐蚀中起着重要的作用。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.022

Warren P Iverson

引用次数: 0

Recalibration of the U.S. National Prototype Kilogram. 美国国家原型公斤的重新校准。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.015

R S Davis

引用次数: 13

Conference Report: FIELD EFFECTS ON RYDBERG ATOMS. 会议报告:场对里德伯原子的影响。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.020

John W Cooper, Charles W Clark

引用次数: 0

Determination of the Enthalpies of Combustion and Formation of Substituted Triazines in an Adiabatic Rotating Bomb Calorimeter. 在绝热旋转弹量热计中测定燃烧焓和取代三嗪的生成。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-07-01 DOI: 10.6028/jres.090.018

Walter H Johnson, Edward J Prosen

{"title":"Determination of the Enthalpies of Combustion and Formation of Substituted Triazines in an Adiabatic Rotating Bomb Calorimeter.","authors":"Walter H Johnson, Edward J Prosen","doi":"10.6028/jres.090.018","DOIUrl":"https://doi.org/10.6028/jres.090.018","url":null,"abstract":"To obtain reliable thermodynamic data on substituted triazines, it is necessary to use a calorimeter that is capable of high precision with small quantities of sample and in which a homogeneous solution of the corrosive combustion products can be maintained. The enthalpies of combustion of six substituted triazines have been determined in a platinum-lined adiabatic rotating bomb calorimeter. These are the first determinations of enthalpies of combustion or formation to have been reported for these compounds. The values derived for the enthalpies of formation in kJ/mol at 25 °C are as Follows: 2,4,6-trimethoxy-l,3,5-triazine, - 478.60± 0.87; 2,4,6-triethozy- 1,3,5-triazine, - 584.99± 1.50; 2,4,6-tris(2-fluoro-2,2-dinitroethoxy)-l,3,5-triazine, -1109.80±l.53; 2,4-dimethoxy-6-(2-fluoro-2,2-dimtroethoxy)-l,3,5-triazine, -697.08± 1,15; 2-methoxy- 4,6-bis(2-fluoro-2,2-dinitroethoxy)-l,3,5-triazine, -907.71± 2.40; 2-amino-4,6-bis(2-fluoro-2,2-dinitroethoxy)-l,3,5-triazine, - 773-12±1.50.","PeriodicalId":93321,"journal":{"name":"Journal of research of the National Bureau of Standards (1977)","volume":"90 4","pages":"295-303"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6664203/pdf/jres-90-295.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39452456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

A High Temperature, High Pressure Reaction-Screening Apparatus. 一种高温高压反应筛选装置。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-05-01 DOI: 10.6028/jres.090.013

Thomas J Bruno, Gretchen L Hume

引用次数: 15

Production Rates for Oxyfluorides SOF₂, SO₂F₂, and SOF₄ in SF₆ Corona Discharges. SF6电晕放电中氟氧化物SOF2、SO2F2和SOF4的产率

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-05-01 DOI: 10.6028/jres.090.012

R J Van Brunt

{"title":"Production Rates for Oxyfluorides SOF2, SO2F2, and SOF4 in SF6 Corona Discharges.","authors":"R J Van Brunt","doi":"10.6028/jres.090.012","DOIUrl":"https://doi.org/10.6028/jres.090.012","url":null,"abstract":"The most abundant, long-lived stable gaseous species generated by corona discharges in SF6 gas containing trace levels of O2 and H2O are the oxyfluorides SOF2, SO2F2, and SOF4. Absolute energy and charge rates-of-production of these and the minor products SO2, OCS, and CO2 have been measured at different total gas pressures from 100 kPa to 300 kPa and for discharges of different current, power, and polarity. Oxyfluoride yields for SF6/O2 mixtures containing up to 10% O2 have also been measured. The results indicate that oxyfluoride production is not controlled by the concentrations of either O2 or H2O at levels below about 1%, and the rate controlling factor is the dissociation rate of SF6 in the discharge. The discharge current and time dependence of the production rates are discussed in terms of gas-phase mechanisms that have been proposed to explain previous observations of electrical, thermal, and laser-induced decomposition of SF6 and SF6/O2 mixtures. Upper limits on the total SF6 decomposition rate in low-current discharges have been estimated. Details of the chemical analysis procedures are given, and application of the results to the design of chemical diagnostics for SF6-insulated, high-voltage apparatus is discussed.","PeriodicalId":93321,"journal":{"name":"Journal of research of the National Bureau of Standards (1977)","volume":"90 3","pages":"229-253"},"PeriodicalIF":0.0,"publicationDate":"1985-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6692278/pdf/jres-90-229.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39473788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 100