Helge Bøvik Larsen
Professor
Contact
Telephone: 51832174
Email: helge.b.larsen@uis.no
Room: KE E-327
Department
Faculty of Science and Technology
Department of Mathematics and Physics
Publications
Vitenskapelige publikasjoner
Ramsnes, Stian Penev; Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2020)
MaXrd updated with emphasis on model construction and reciprocal-space simulations.Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 53.
Hefte 6.
s.1620-1624.
Zhang, Qiuyuan; Polikarpov, Maxim; Nataliya, Klimova; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann; Thorkildsen, Gunnar; Snigireva, Irina; Snigirev, Anatoly
(2019)
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation.AIP Conference Proceedings.
ISSN 0094-243X.
Volum 2054.
Hefte 1.
s.1-6.
DOI: 10.1063/1.5084638
Ramsnes, Stian Penev; Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2019)
Using Mathematica as a platform for crystallographic computing.Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 52.
s.214-218.
Zhang, Qiuyuan; Polikarpov, Maxim; Klimova, Nataliya; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann; Thorkildsen, Gunnar; Snigireva, Irina; Snigirev, Anatoly
(2018)
Investigation of `glitches' in the energy spectrum induced by single-crystal diamond compound X-ray refractive lenses.Journal of Synchrotron Radiation.
ISSN 0909-0495.
Volum 26.
s.1-10.
Jubeli, Emile; Maginty, Amanda B.; Khalique, Nada Abdul; Raju, Liji; Nicholson, David Graham; Larsen, Helge Bøvik; Pungente, Michael D.; Goldring, William P.D.
(2017)
Cationic lipids bearing succinic-based, acyclic and macrocyclic hydrophobic domains: Synthetic studies and in vitro gene transfer.European Journal of Medicinal Chemistry.
ISSN 0223-5234.
Volum 125.
s.225-232.
Khalifeh, Mahmoud; Saasen, Arild; Larsen, Helge Bøvik; Hodne, Helge
(2017)
Development and Characterization of Norite-Based Cementitious Binder from an Ilmenite Mine Waste Stream.Advances in Materials Science and Engineering.
ISSN 1687-8434.
Volum 2017.
DOI: 10.1155/2017/6849139
Khalifeh, Mahmoud; Saasen, Arild; Vrålstad, Torbjørn; Larsen, Helge Bøvik; Hodne, Helge
(2016)
Experimental study on the synthesis and characterization of aplite rock-based geopolymers.Journal of Sustainable Cement-Based Materials.
ISSN 2165-0373.
Volum 5.
Hefte 4.
s.233-246.
Parvizi-Bahktar, P.; Mendez-Campos, J.; Raju, Liji; Khalique, Nada Abdul; Jubeli, Emile; Larsen, Helge Bøvik; Nicholson, David Graham; Pungente, Michael D.; Fyles, Thomas Murray
(2016)
Structure-activity correlation in transfection promoted by pyridinium cationic lipids.Organic and biomolecular chemistry.
ISSN 1477-0520.
Volum 14.
Hefte 11.
s.3080-3090.
DOI: 10.1039/c6ob00041j
Larsen, Helge Bøvik; Thorkildsen, Gunnar; Nicholson, David Graham; Pattison, Philip
(2016)
Thermal induced structural properties of silver(I) sulphate (Ag2SO4).Crystal Research & Technology.
ISSN 0232-1300.
Volum 51.
Hefte 12.
s.730-737.
Jubeli, Emile; Maginty, Amanda B; Khalique, Nada Abdul; Raju, Liji; Abdulhai, Mohamad; Nicholson, David Graham; Larsen, Helge Bøvik; Pungente, Michael D.; Goldring, William PD
(2015)
Next generation macrocyclic and acyclic cationic lipids for gene transfer: Synthesis and in vitro evaluation.Bioorganic & Medicinal Chemistry.
ISSN 0968-0896.
Volum 23.
Hefte 19.
s.6364-6378.
Parvizi, Paria; Jubeli, Emile; Raju, Liji; Khalique, Nada Abdul; Almeer, Ahmed; Allam, Hebatalla; Manaa, Maryem; Larsen, Helge Bøvik; Nicholson, David Graham; Pungente, Michael; Fyles, Thomas
(2014)
Aspects of nonviral gene therapy: Correlation of molecular parameters with lipoplex structure and transfection efficacy in pyridinium-based cationic lipids.International Journal of Pharmaceutics.
ISSN 0378-5173.
Volum 461.
Hefte 1-2.
s.145-156.
Øpstad, Christer Lorentz; Zeeshan, Muhammad; Zaidi, Asma; Sliwka, Hans-Richard; Partali, Vassilia; Nicholson, David Graham; Surve, Chinmay; Izower, Mitchell A.; Bilchuk, Natalia; Lou, Howard H.; Leopold, Philip; Larsen, Helge Bøvik; Liberska, Alexandra; Khalique, Nada Abdul; Raju, Liji; Flinterman, Marcella; Jubeli, Emile; Pungente, Michael D.
(2014)
Novel cationic polyene glycol phospholipids as DNA transfer reagents - Lack of a structure-activity relationship due to uncontrolled self-assembling processes.Chemistry and Physics of Lipids.
ISSN 0009-3084.
Volum 183.
s.117-136.
Larsen, Helge Bøvik; Thorkildsen, Gunnar; Natland, Sølvi; Pattison, Philip
(2014)
Average crystal structure(s) of the embedded meta stable η′-phase in the Al-Mg-Zn system.Philosophical Magazine.
ISSN 1478-6435.
Volum 94.
Hefte 15.
s.1719-1743.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2014)
Crystallography of embedded particles in Al-Mg-Zn alloys. Symmetry analysis.Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 47.
Hefte 5.
s.1736-1748.
Larsen, Helge Bøvik; Thorkildsen, Gunnar; Nicholson, David Graham
(2012)
X-ray attenuation factors in fluorescence intensity emission-effects of finite sample size.Physica Scripta.
ISSN 0031-8949.
Volum 86.
Hefte 6.
Sjølyst-Kverneland, Atle; Hansen, Vidar; Thorkildsen, Gunnar; Larsen, Helge Bøvik; Pattison, P; Li, X.Z.; Gjønnes, Jon
(2011)
Transformations and structures in the Al-Zn-Mg alloy system: A diffraction study using synchrotron radiation and electron precession.Materials Science & Engineering: A.
ISSN 0921-5093.
Volum 528.
Hefte 3.
s.880-887.
Sjølyst-Kverneland, Atle; Hansen, Vidar; Thorkildsen, Gunnar; Larsen, Helge Bøvik; Pattison, Philip; Li, XZ; Gjønnes, Jon
(2010)
Transformations and structures in the Al?Zn?Mg alloy system: A diffraction study using synchrotron radiation and electron precession.Materials Science & Engineering: A.
ISSN 0921-5093.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Beukes, Jon Are
(2006)
Angle calculations for a three-circle goniostat.Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 39.
s.151-157.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Beukes, Jon Are
(2006)
Angle calculations for a three-circle goniostat.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 39.
Thorkildsen, Gunnar; Larsen, Helge B.; Weckert, Edgar; Mo, Frode; Mathiesen, Ragnvald H.
(2005)
Three-beam resonant X-ray diffraction in germanium - Laue transmission cases.
Acta Crystallographica Section A: Foundations of Crystallography.
ISSN 0108-7673.
Volum A61.
s.460-470.
Thorkildsen, Gunnar; Weckert, Edgar; Mo, Frode; Larsen, Helge Bøvik; Mathiesen, Ragnvald
(2005)
Three-beam resonant X-ray diffraction in germanium - Laue transmission cases.
Acta Crystallographica Section A: Foundations of Crystallography.
ISSN 0108-7673.
Volum 61.
s.460-470.
Larsen, Helge Bøvik; Thorkildsen, Gunnar; Weckert, Edgar
(2005)
Three-beam diffraction in an elastically strained crystal plate.
Acta Crystallographica Section A: Foundations of Crystallography.
ISSN 0108-7673.
Volum 61.
s.134-138.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Weckert, Edgar; Semmingsen, Dag
(2003)
Three-beam X-ray diffraction -- profile analysis.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 36.
s.1324-1333.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2002)
Three-beam X-ray diffraction in a semi-infinite perfect crystal.
?.
Volum 58.
s.252-258.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Semmingsen, Dag; Bjaanes, Øystein
(2001)
Generalized extinction in bipyramidal crystals.
?.
Volum 57.
s.201-211.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Weckert, Edgar
(2001)
Approximate solution of the Takagi-Taupin equations for a semi-infinite crystal in the three-beam Laue-Laue case.
?.
Volum 57.
s.389-394.
Bae, Martin; Larsen, Helge Bøvik
(2001)
Observation of strain induced boundary migration (SIBM).
Praktische metallographie.
ISSN 0032-678X.
Volum 38.
s.680-686.
Thorkildsen, Gunnar; Larsen, Helge B.; Mathiesen, Ragnvald H.; Mo, Frode
(2000)
Three-beam interference measurements with a six-circle kappa diffractometer.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 33.
s.49-51.
Thorkildsen, Gunnar; Larsen, Helge B.; Mathiesen, Ragnvald H.; Mo, Frode
(2000)
Three-beam interference measurements with a six-circle kappa diffractometer.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 33.
s.49-51.
Thorkildsen, Gunnar; Larsen, Helge B.
(2000)
Comments on Extinction-Corrected mean thickness and integral width used in the program UMWEG98 by Rossmanith (2000).
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 33.
Thorkildsen, Gunnar; Mathiesen, Ragnvald H.; Larsen, Helge B.
(1999)
Angle calculations for a six-circle kappa diffractometer.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 32.
s.943-950.
Thorkildsen, Gunnar; Mathiesen, Ragnvald H.; Larsen, Helge B.
(1999)
Angle calculations for a six-circle kappa diffractometer.
Journal of Applied Crystallography.
ISSN 0021-8898.
Volum 32.
s.943-950.
Thorkildsen, Gunnar; Larsen, Helge B.; Authier, Andre
(1999)
Nonsymmetrical X-ray diffraction in a perfect rectangular t x l crystal. Extinction and absorption.
?.
Volum A55.
Hefte 1.
s.1-13.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(1999)
X-ray diffraction in perfect t x l crystals. Rocking curves.
?.
Volum A55.
s.840-854.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(1999)
X-ray intensity patterns from finite perfect crystals.
?.
Volum A55.
s.1000-1013.
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose.NaCl.H2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
Acta Crystallographica Section A: Foundations of Crystallography.
ISSN 0108-7673.
Volum A54.
Hefte 3.
s.338-347.
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(1998)
A New Technique: Physically Estimated Triplet Phases.
ESRF Newsletter.
ISSN 1011-9310.
Hefte 30.
s.34-36.
Mathiesen, Ragnvald; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose NaCl H_2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
Acta Crystallographica Section A: Foundations of Crystallography.
ISSN 0108-7673.
Volum A54.
s.338-347.
Thorkildsen, Gunnar; Larsen, Helge B.; Authier, Andre
(1998)
Three-Beam Diffraction in Finite Perfect Crystals. I: Exploring Laue-Laue and Bragg-Laue Scattering Using a Series-Expansion Approach for the Solution of the Takagi-Taupin Equations.
?.
Volum A54.
Hefte 1.
s.120-128.
Larsen, Helge B.; Thorkildsen, Gunnar; Authier, Andre
(1998)
Three-Beam Diffraction in Finite Perfect Crystals. II. Influence of Absorption, Resonant Scattering and Polarization.
?.
Volum A54.
Hefte 1.
s.129-136.
Larsen, Helge B.; Thorkildsen, Gunnar; Authier, Andre
(1998)
Three-Beam Diffraction in Finite Imperfect Crystals. An Analysis of Coherent Wavefield Interactions Using Statistical Dynamical Theory.
?.
Volum A54.
Hefte 1.
s.137-145.
Thorkildsen, Gunnar; Larsen, Helge B.; Authier, Andre
(1998)
Primary Extinction in Cylinders and Spheres.
?.
Volum A54.
s.172-185.
Thorkildsen, Gunnar; Larsen, Helge B.; Authier, Andre
(1998)
Absorption and Weighted Path Lengths in Cylinders and Spheres.
?.
Volum A54.
s.186-190.
Thorkildsen, Gunnar; Larsen, Helge B.; Authier, Andre
(1998)
Symmetrical X-ray Diffraction in a Perfect Rectangular t x l Crystal. Extinction and Absorption.
?.
Volum A54.
s.416-429.
Larsen, Helge B.; Thorkildsen, Gunnar; Authier, Andre
(1998)
An exact analytical expression for the primary extinction factor for a perfect spherical crystal in the limit oh->/2.
?.
Volum A54.
s.511-512.
Mathiesen, Ragnvald; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.; Authier, Andre
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose NaCl H_2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
?.
Volum A54.
s.338-347.
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.; Cornuejols, D.
(1998)
A New Technique: Physically Estimated Triplet Phases.
ESRF Newsletter.
ISSN 1011-9310.
Hefte 30.
s.34-36.
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.; Authier, A.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose.NaCl.H2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
?.
Volum A54.
Hefte 3.
s.338-347.
Mathiesen, R.H.; Mo, F.; Eikenes, A.; Nyborg, T.; Larsen, H.B.
(1998)
Existence of Two Crystal Structures of the Complex a-D-Glucose- NaCl.H2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
Acta Crystallographica.
ISSN 0365-110X.
Volum A 54.
Hefte 3.
s.338-347.
Bøker og kapitler
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2007)
Crystallography of embedded particles in FCC metal matrices.
Universitetet i Stavanger.
ISBN 9788276443325.
Hefte No. 24.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Beukes, Jon Are
(2005)
Angle Calculations for a Six Circle Kappa-Diffractometer IV Orientation Matrix.
Universitetet i Stavanger.
ISBN 8276442544.
Hefte 2.
Thorkildsen, Gunnar; Larsen, Helge Bøvik; Beukes, Jon Are
(2004)
Angle Calculations for a six circle kappa-diffractometer. III. psi-rotations and scan procedures.
ISBN 8276442153.
Hefte 131.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2002)
Angle Calculations for a Six Circle Kappa-Diffractometer II. General Orientation of Axes.
Universitetet i Stavanger.
ISBN 8276441858.
Hefte 110.
Bae, Martin; Larsen, Helge Bøvik
(2001)
Evidence of Strain Induced Boundary Migration in a Stainless Steel.
Universitetet i Stavanger.
Hefte 93.
Thorkildsen, Gunnar; Larsen, Helge B.
(1999)
Two Beam Diffraction in Perfect Crystals analyzed by Takagi's Equations. Part 4. Rocking Curves. Mathematica Function Definitions and Notebooks.
Universitetet i Stavanger.
ISBN 82-7644-074-6.
Hefte 53.
Thorkildsen, Gunnar; Larsen, Helge B.; Mathiesen, Ragnvald H.; Mo, Frode
(1998)
Test Experiments with the KUMA6 Diffractometer at the SNBL, EH-2. Project 01-02-115.
Thorkildsen, Gunnar; Larsen, Helge B.; Mathiesen, Ragnvald H.; Mo, Frode
(1998)
Test Experiments with the KUMA6 Diffractometer at the SNBL, EH-2. Project 01-02-115.
Thorkildsen, Gunnar; Mathiesen, Ragnvald H.; Larsen, Helge B.
(1998)
Angle Calculations for a Six-Circle kappa-Diffractometer.
Universitetet i Stavanger.
ISBN 82-7644-065-7.
Hefte 46.
Thorkildsen, Gunnar; Larsen, Helge B.
(1998)
Three-beam Diffraction in Imperfect Crystals.
Universitetet i Stavanger.
ISBN 82-7644-052-5.
Hefte 40.
Thorkildsen, Gunnar; Larsen, Helge B.
(1998)
Two Beam Diffraction in Perfect Crystals Analyzed by Takagi's Equations. Part 3. Rocking Curves and Intensity Distributions.
Universitetet i Stavanger.
ISBN 82-7644-056-8.
Larsen, Helge Bøvik
(1997)
Dynamical effects in the scattering of X-rays from perfect and imperfect finite crystals.
ISBN 82-471-0063-0.
Hefte 1997:33.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(1997)
Two Beam Diffraction in Perfect Crystals Analyzed by Takagi's Equations. Part 1-Basic Principles and Methods of Solutions.
Universitetet i Stavanger.
ISBN 82-7644-040-1.
Hefte 30.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(1997)
Two Beam Diffraction in Perfect Crystals Analyzed by Takagi's Equations. Part 2-Function Definitions, Notebooks and Worksheets.
Universitetet i Stavanger.
ISBN 82-7644-042-8.
Hefte 31.
Formidling
Bø, Lund Øystein; Larsen, Helge Bøvik; Sydnes, Magne Olav
(2023)
UiS, energihovedstaden og satsing på kjernekraft.
Stavanger Aftenblad.
ISSN 0804-8991.
s.22-22.
Bø, Lund Øystein; Larsen, Helge Bøvik; Sydnes, Magne Olav
(2021)
Sammen om det grønne skiftet.
Stavanger Aftenblad.
ISSN 0804-8991.
s.28-28.
Dommersnes, Espen; Khalifeh, Mahmoud; Larsen, Helge Bøvik
(2020)
Potential Utilization of Neutron Logging Technology for Casing Cement Evaluation - Feasibility Study.
Abu Dhabi International Petroleum Exhibition & Conference;
2020-11-09 - 2020-11-12.
Larsen, Helge Bøvik
(2020)
Doctoral Supervision in the 21st Century.
TUH- Professors Lounge;
2020-01-30.
Ramsnes, Stian Penev; Larsen, Helge Bøvik; Thorkildsen, Gunnar; Nicholson, David Graham
(2019)
Utilising MaXrd in the Study of Inclusion Compounds.
32nd European Crystallographic Meeting;
2019-08-18 - 2019-08-23.
Zhang, Qiuyuan; Polikarpov, Maxim; Klimova, Nataliya; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann; Snigireva, Irina; Snigirev, Anatoly
(2018)
Glitch spectroscopy of X-ray compound refractive lenses.
Poster;
2018-02-05 - 2018-02-07.
Zhang, Qiuyuan; Larsen, Helge Bøvik; Mathiesen, Ragnvald
(2018)
Investigation of glitches induced by single-crystal diamond compound refractive lenses.
Synchrotron Radiation Instrumentation (SRI 2018);
2018-06-10 - 2018-06-15.
Larsen, Helge Bøvik
(2017)
What is happening inside the synchrotron?.
Fellesseminar ved Universitetet i Bergen;
2017-03-17.
Larsen, Helge Bøvik
(2016)
Moderne solcellematerialer.
Åpen fagdag;
2016-11-15 - .
Larsen, Helge Bøvik
(2016)
Between kinematical and dynamical X-ray diffraction.
Invitert foredrag;
2016-11-22.
Khalifeh, Mahmoud; Saasen, Arild; Vrålstad, Torbjørn; Larsen, Helge Bøvik; Hodne, Helge
(2015)
Cap rock restoration in plug and abandonment operations; possible utilization of aplite-based geopolymers for permanent zonal isolation and well plugging.
SPE Offshore Europe Conference and Exhibition;
2015-09-08 - 2015-09-11.
Parvizi, Paria; Raju, Liji; Khalique, Nada Abdul; Jubeli, Emile; Nicholson, David Graham; Larsen, Helge Bøvik; Pungente, M.D.; Fyles, Thomas
(2015)
Correlation of molecular properties and supramolecular assembly od cationic lipoplexes with transfection efficiency.
Pacifichem 2015;
2015-12-15 - 2015-12-20.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2015)
The atomic anisotropic displacement tensor - completing the picture.Acta Crystallographica Section A: Foundations and Advances.
ISSN 2053-2733.
Volum 71.
s.467 -470.
Barrier, Elise; Braz Fernandes, Francisco Manuel; Bujan, Maya; Feiters, Martin C.; Froideval, Annick; Ghijsen, Jacques; Hase, Thomas; Hough, Michael A.; Jergel, Matej; Jimenez, Ignacio; Kajander, Tommi; Kikas, Arvo; Kokkinidis, Michael; Kover, Laszlo; Larsen, Helge Bøvik; Lawson, David Mark; Lawniczak-Jablonska, Krystyna; Mariani, Carlo; Mikulik, Petr; Monnier, Judith; Morera, Solange; McGuinness, Cormac; Müller-Buschbaum, Peter; Meedom Nielson, Martin; Pietsch, Ullrich; Tromp, Moniek; Simon, Marc; Stangl, Julian; Zanotti, Giuseppe
(2014)
The benefit of the European User Community from transnational access to national radiation facilities.Journal of Synchrotron Radiation.
ISSN 0909-0495.
Volum 21.
Hefte 3.
s.638-639.
Larsen, Helge Bøvik
(2013)
SAXS/SAXRD studies part II: Structural studies on Lipid-DNA complexes.
Symposium on Nonviral Delivery of Biotherapeutics;
2013-11-26.
Parvizi, Paria; Khalique, Nada Abdul; Jubeli, Emile; Raju, Liji; Larsen, Helge Bøvik; Nicholson, David Graham; Fyles, Thomas; Pungente, Michael
(2013)
Correlation of lipoplex morphology and transfection efficacy for pyridium-based cationic lipids by means of synchrotron radiation and X-ray diffraction.
Annual reserach conference of the Qatar Science Foundation;
2013-11-24 - 2013-11-26.
Parvizi, Paria; Jubeli, Emile; Raju, Liji; Khalique, Nada Abdul; Almeer, Ahmed; Allam, Hebatalla; Manaa, Maryem; Larsen, Helge Bøvik; Nicholson, David Graham; Fyles, Thomas; Pungente, Michael
(2013)
Correlation of molecular parameters with lipoplex structure and the transfection efficacy in pyridium-based cationic lipids.
16th Annual Meeting of the American Society for Gene & Cell Therapy;
2013-05-15 - 2013-05-18.
Larsen, Helge Bøvik; Nicholson, David Graham
(2012)
Single crystal diffraction and FLEXAFS -- complementary opprotunities.
PSI seminar;
2012-06-06.
Larsen, Helge Bøvik
(2012)
Synkrotroner og synkrotronstråling - nødvendige storskala verktøy for å studere stoffers oppbygning på atomært nivå.
Møte i Norges Teknisk-Naturvitenskapelige Vitenskapsakademi;
2012-10-25.
Hansen, Vidar; Oddsen, Ingunn Cecilie; Kverneland, Atle; Larsen, Helge Bøvik; Pattison, Philip; Thorkildsen, Gunnar; Gjønnes, Jon
(2009)
Diffuse scattering from zones and particles in the Al-Zn-Mg alloy system.
SNBL/ESRF Workshop on Diffuse Scattering;
2009-06-25 - 2009-06-26.
Natland, Sølvi; Larsen, Helge Bøvik; Thorkildsen, Gunnar; Pattison, Philip
(2008)
Diffraction studies of an Al-Mg-Zn single crystal by synchrotron radiation.
XXI Congress of the International Union of Crystallography;
2008-08-23 - 2008-08-31.
Hansen, Vidar; Kverneland, Atle; Li, X.Z.; Thorkildsen, Gunnar; Larsen, Helge Bøvik; Gjønnes, Jon
(2008)
Elektronmikroskopi og synkrotronrøntgen diffraksjonsstudier av transformasjoner og strukturer i 7xxx-legeringer.
29. Metallurgiske Sommermøtet;
2008-05-21 - 2008-05-22.
Hansen, Vidar; Kverneland, Atle; Thorkildsen, Gunnar; Larsen, Helge Bøvik; Vincent, Roger; Gjønnes, Jon
(2007)
Structure analysis of the n'-precipitate in Al-Zn-Mg alloys by the precession technique in electron diffraction and synchrotron radiation.
19Th Nordic Structural Chemistry Meeting;
2007-01-08 - 2007-01-11.
Hansen, Vidar; Kverneland, Atle; Thorkildsen, Gunnar; Larsen, Helge Bøvik; Pattison, Philip; Gilmore, Cristopher; Vincent, Roger; Gjønnes, Jon
(2006)
Structure determination of nanosized semi-coherent Al-Mg-Zn precipitates by precession electron diffraction and synchrotron X-ray diffraction.
23rd European crystallographic Meeting;
2006-08-06 - 2006-08-11.
Hansen, Vidar; Kverneland, Atle; Larsen, Helge Bøvik; Pattison, Philip; Vincent, Roger; Gjønnes, Jon
(2005)
Structure Determination of Embedded Precipitates by Precession Electron Diffraction and Synchrotron Radiation: A Comparison.
XX Congress of the International Union of Crystallography;
2005-08-23 - 2005-08-31.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2004)
Kappa six circle diffractometer -- benchmarking.
utenTitteltekst;
2004-05-10.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2004)
Three-beam diffraction in imperfect crystals.
utenTitteltekst;
2004-06-23.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2004)
Multiple beam diffraction -- the basics, applications and possible developments.
utenTitteltekst;
2004-12-06.
Larsen, Helge Bøvik
(2003)
Synchrotron radiation and syncrotrons -- necessary large-scale tools in studying structure at atomic level. I: NTVA Årbok 2002.
ISBN 82-7719-044-1.
s.43-46.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2003)
Three-beam X-ray diffraction -- profile analysis.
21st EUROPEAN Crystallographic Meeting.;
2003-08-24 - 2003-08-29.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2002)
TE-6254 Materialfysikk.
Universitetet i Stavanger.
Larsen, Helge Bøvik
(2002)
Diffraksjon av røntgenstråler fra materialer.
Hansen, Vidar; Larsen, Helge Bøvik
(2002)
Metallenes indre liv.
utenTitteltekst;
2002-11-28.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2001)
Three-beam Diffraction -- Only for Phase-Estimation??.
11'th ESRF User's Meeting;
2001-02-19 - 2001-02-20.
Thorkildsen, Gunnar; Larsen, Helge Bøvik
(2001)
Dynamical scattering of X-rays in finite crystals.
1. Brukermøte norsk Synktrotronforskning;
2001-01-18 - 2001-01-19.
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(2001)
Three-beam Diffraction -- Only for Phase-Estimation ???.
1.Brukermøte norsk Synkrotronforskning;
2001-01-18 - 2001-01-19.
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(2000)
Experimental phase estimates applied in solving crystallographic problems. The structure(s) of alpha-D-Glc NaCl H2O (2:1:1).
The Swiss-Norwegian Beamlines at ESRF: Research Highlights 2000.;
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(2000)
Experimental phase estimates applied in solving crystallographic problems. The structure(s) of alpha-D-Glc NaCl H2O (2:1:1).
The Swiss-Norwegian Beamlines at ESRF: Research Highlights 2000.;
Larsen, Helge B.; Thorkildsen, Gunnar
(2000)
Measurements of dynamical diffraction effects in finite crystals.
SNBL -user's meeting No.1. Research highlights.;
Larsen, Helge B.
(2000)
Synchrotron Radiation -- Applications in Materials Science.
utenTitteltekst;
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(1999)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose.NaCl.H2O (2:1:1) Verified by Three-Beam Diffraction.
NSM-16, 08.-10.01.98;
Larsen, Helge Bøvik; Thorkildsen, Gunnar
(1999)
Interference Patterns from semi-infinite and finite Crystals.
utenTitteltekst;
Mathiesen, Ragnvald H.; Mo, Frode; Eikenes, Anders; Nyborg, Tanja; Larsen, Helge B.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose.NaCl.H2O (2:1:1) Verified by Three-Beam Diffraction.
NSM-16, 08.-10.01.98;
Thorkildsen, Gunnar; Larsen, Helge B.
(1998)
Polarization Effects in Three-Beam Diffraction from Small, Finite Crystals.
International School of Crystallography;
Thorkildsen, Gunnar; Larsen, Helge B.
(1998)
Calculating the Integrated Power as a Function of Wavelenght for a Finite Perfect Crystal using MATHEMATICA.
International School of Crystallography;