Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Bernd Neidhart"'
Autor:
Bernd Neidhart, Bernhard Lendl, Rainer W. Stephany, Ángel Ríos, Kaj Heydorn, Boris L. Milman, Damià Barceló, Klaus Klemm, Alan Townshend, Lutgarde M. C. Buydens, Bo Karlberg, Soledad Cárdenas, Adolf Zschunke, Miguel Valcárcel
Publikováno v:
Accreditation and Quality Assurance, 8, 2, pp. 68-77
Accreditation and Quality Assurance, 8, 68-77
Accreditation and Quality Assurance, 8, 68-77
The European Commission has supported the G6MA-CT-2000–01012 project on ”Metrology of Qualitative Chemical Analysis” (MEQUALAN), which was developed during 2000–2002. The final result is a document produced by a group of scientists with exper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d7a20622f629a9eacf174722d6f7865
https://doi.org/10.1007/s00769-002-0556-x
https://doi.org/10.1007/s00769-002-0556-x
Publikováno v:
Chemical Physics Letters. 363:349-354
We have observed heavy-gas trapping in stationary ultrasonic fields. This effect as well as the recently observed cold-gas traps have been investigated. Both can be explained by the difference in mass density between the trapped gas and ambient media
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0b81e1a41dee4f6bb4300fc41cc591d
https://doi.org/10.1016/s0009-2614(02)01178-8
https://doi.org/10.1016/s0009-2614(02)01178-8
Publikováno v:
Analytical and Bioanalytical Chemistry. 372:122-127
Evaporation constants of acoustically levitated drops from the homologue series of n-alkanes and 1-alkanols in ambient air have been evaluated by size and temperature measurements. The size of the pure liquid drops, within a diameter range of 0.1 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f79003326a0dc394c2bdd254b4614d9e
https://doi.org/10.1007/s00216-001-1132-7
https://doi.org/10.1007/s00216-001-1132-7
Publikováno v:
Physik in unserer Zeit. 32:69-75
Der gegebene Uberblick uber die Grundlagen und Anwendungen stehender Ultraschallfelder zur Positionierung fester, flussiger und gasformiger Proben in der Gasphase mag die Bedeutung dieser Technik veranschaulicht haben. Ausgehend von dem Phanomen der
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18f5a46c5bb891c7776f3be244f70ab7
https://doi.org/10.1002/1521-3943(200103)32:2<69::aid-piuz69>3.0.co
https://doi.org/10.1002/1521-3943(200103)32:2<69::aid-piuz69>3.0.co
Autor:
Bernd Neidhart, Karsten Bergmann
Publikováno v:
Journal of Separation Science. 24:221-225
An analytical method for the simultaneous in situ derivatization of organotin and organolead compounds in water samples is described. Propylated derivatives of the analytes formed directly in the aqueous medium by reaction with tetrapropylborate ions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dfa733e89f321616ed7389881e78597
https://doi.org/10.1002/1615-9314(20010301)24:3<221::aid-jssc221>3.0.co
https://doi.org/10.1002/1615-9314(20010301)24:3<221::aid-jssc221>3.0.co
Publikováno v:
Analytica Chimica Acta. 393:157-165
The application of quality assurance to routine analytical testing is fairly well established with widespread availability of general and specific guidance, both on general principles and in support of quality standards and accreditation/certificatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb008df3065dd338c825c8c46af48b4f
https://doi.org/10.1016/s0003-2670(99)00281-0
https://doi.org/10.1016/s0003-2670(99)00281-0
Publikováno v:
Chemosphere. 38:379-392
In this study the environmental fate of amitrole in terrestrial and aquatic model ecosystems was investigated. Under aerobic conditions mineralization of amitrole is the main degradation pathway. The experiments revealed that the leaching behaviour i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::105843a903ad44925a0d30e20addf973
https://doi.org/10.1016/s0045-6535(98)00185-4
https://doi.org/10.1016/s0045-6535(98)00185-4
Autor:
Bernd Neidhart, Wolfhard Wegscheider
terms of the scatter of the results, e.g. in round-robin tests. In considering the role of AQA in the higher education sector it is necessary to differentiate between the various university activities which include services, research and development
Autor:
Bernd Neidhart, Sigurd Bauerecker
Publikováno v:
The Journal of Chemical Physics. 109:3709-3712
The formation of ice particles in stationary ultrasonic fields (SUSFs) from ice aerosol was observed. Under suitable experimental conditions aerosol particles gather in stable ellipsoidal systems at temperatures down to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::752069bac758f9208d9483de15898a4e
https://doi.org/10.1063/1.476971
https://doi.org/10.1063/1.476971
Publikováno v:
Liebigs Annalen. 1997:1195-1199
By means of the negative solvatochromic betaine dyes 1a, b, the UV/Vis-spectroscopically derived empirical solvent polarity parameter ET(30) for supercritical carbon dioxide (sc-CO2) was determined in the temperature and pressure ranges 40–80°C an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5152710e3dcd3a38a37790f6edc83593
https://doi.org/10.1002/jlac.199719970622
https://doi.org/10.1002/jlac.199719970622