Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Helmut Büttner"'
Publikováno v:
KONA Powder and Particle Journal, Vol 18, Iss 0, Pp 183-193 (2014)
A scanning mobility particle sizer (SMPS, TSI Model 3934) and a white-light optical particle counter (OPC, as described by Umhauer 1983) are combined. With these two instruments, fast and non-intrusive on-line measurements of particle size distributi
Externí odkaz:
https://doaj.org/article/74d8edfb93b24435899a230fccff54c6
Autor:
Kunle Adegoke, Helmut Büttner
Publikováno v:
Pramana. 74:293-306
We have investigated the one-dimensional spin-1/2 axial next-nearest-neighbour Ising (ANNNI) model in two orthogonal magnetic fields at zero temperature. There are four different possible ground state configurations for the ANNNI model in a longitudi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8a3b743193f5f665f75c017d19cc3b7
https://doi.org/10.1007/s12043-010-0028-5
https://doi.org/10.1007/s12043-010-0028-5
Publikováno v:
Ferroelectrics. 363:73-78
Perovskite oxide ferroelectrics show classical soft mode behaviour typical for the onset of a homogeneous long-range polar state and a displacive phase transition. Besides these long wave length properties, local effects are observed by different pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a1182d331720e093ea9c7124767f2d7
https://doi.org/10.1080/00150190802019296
https://doi.org/10.1080/00150190802019296
Autor:
Helmut Büttner
Publikováno v:
Praktische Theologie. 43:30-35
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::228777bd9d7307f1390fab26ab9ad9ef
https://doi.org/10.14315/prth-2008-0107
https://doi.org/10.14315/prth-2008-0107
Publikováno v:
Journal of Physics A: Mathematical and General. 37:8595-8608
For a model system with a complex scalar field static topological solutions are found analytically. Various domain wall structures are discussed and especially the junction of three different domains (called Y-type junctions) is studied in detail. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d3803796a1bb83fafd050adb1668dc2
https://doi.org/10.1088/0305-4470/37/36/002
https://doi.org/10.1088/0305-4470/37/36/002
Publikováno v:
Chemie Ingenieur Technik. 76:253-258
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::701f4fa64ca67f8169fb304642fa0eef
https://doi.org/10.1002/cite.200403337
https://doi.org/10.1002/cite.200403337
Publikováno v:
Chemie Ingenieur Technik. 75:1787-1809
Aerosole – gezielt erzeugt oder unerwunscht gebildet – treten in vielen technischen Prozessen auf. So werden zum Beispiel Aerosole gezielt erzeugt, wenn Produkte, die aus feindispersen Feststoffen bestehen, in einem Gasphasenprozess (im weitesten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f52ed442c95230a6df055c0565178e87
https://doi.org/10.1002/cite.200306141
https://doi.org/10.1002/cite.200306141
Publikováno v:
Chemie Ingenieur Technik. 75:568-572
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2653308cb314e14c8a3791799be1090c
https://doi.org/10.1002/cite.200390110
https://doi.org/10.1002/cite.200390110
Autor:
Shu Chen, Helmut Büttner
Publikováno v:
The European Physical Journal B. 29:15-18
We generalize the Shastry-Sutherland model to three dimensions. By representing the model as a sum of the semidefinite positive projection operators, we exactly prove that the model has exact dimer ground state. Several schemes for constructing the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57cfdc760791f22d2dd2f3d8bc5324d0
https://doi.org/10.1140/epjb/e2002-00256-0
https://doi.org/10.1140/epjb/e2002-00256-0
Publikováno v:
Particle & Particle Systems Characterization. 19:229-239
The scanning mobility particle sizer (SMPS) is one of the best known instruments for measuring particle size distributions in the submicron range. The SMPS consists of two parts: an electrostatic aerosol classifier (differential mobility particle ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01f051e83f23bc08aeb17b3f085e9ed2
https://doi.org/10.1002/1521-4117(200208)19:4<229::aid-ppsc229>3.0.co
https://doi.org/10.1002/1521-4117(200208)19:4<229::aid-ppsc229>3.0.co