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Articles and publications listed below are written by Visilab Signal Technologies's personnel. Some of them are scanned as PDF documents. Some of them are published elsewhere, some are unpublished. Unfortunately, we can not publish all of our reports and studies as they are either classified by our customers or the copyright has been passed to another party.
Henrik Stenlund,
"Recursion Relations and Functional Equations for the
Riemann Zeta Function", arXiv:1107.3479v3[math.GM], 18 Jul 2011
Visilab Report #2011-07
- New recursion relations for the Riemann zeta function are
introduced.
Henrik Stenlund,
"The Inversion Formula Applied to Some Examples , 01-01-2011
Visilab Report #2011-01
- The inversion formula for analytic functions is applied to some example functions.
Henrik Stenlund, "Inversion Formula", arXiv:1008.0183v2[math.GM], 27 Jul 2010
Visilab Report #2010-07
- An inversion formula for analytic functions is introduced.
Henrik Stenlund, "Technical Report: "Three Methods of Solution of Concentration Dependent Diffusion Coefficient", 6-18-2004
- A mathematical study for finding methods of solution for determining the dependence of the diffusion coefficient from experimental concentration data.
Henrik Stenlund, "Report on Optimization of an
Optical System", 01-15-2001
- A detailed study for optimizing an optical multichannel
detector system for a colour measuring system. The distance dependence was the
most important parameter. Monte Carlo method was used in ray tracing.
Henrik Stenlund, "Technical Report: A
Research on Mutual Interaction of Two Electron Beams via Space Charge",
12-13-1999
- A study of the mutual interaction of two electron beams in a vacuum CRT.
Actual application in the effects found at a CRT factory.
Henrik Stenlund, "Technical Report: Thin Cassette Oven for GC with a Silica Column", 03-12-1990
- A summary report of the development project for a high temperature oven. The target system was a thin small cassette for a narrow Silica gas chromatographic (GC) column. The temperature range is from +50 to +400 C with a very high control accuracy and very small temperature gradients inside the cassette. Theoretical work around thermal conductivity and temperature distributions of the cassette formed the basis. According to those results a few prototypes were built and tested. Verification of proper operation was made with true GC runs.
Henrik Stenlund, "Technical Report: Measuring Paper Formation with Beta Radiation", KCL P8622, 06-19-1986
- A theoretical report on measuring paper formation with beta radiation. Radioactive intensity calculations for required signal level are established with formulas.
Henrik Stenlund, "Technical Report: Design and Implementation of
Time-of-Flight Mass Spectrometer",
TEKES 105/425/84;119/1985, 3-30-1986
- Final report of a project for designing two differing TOFMS of optimized reflection type. All technical details of electronics, mechanics and software are shown.
Henrik Stenlund, Karl Holmström, "Technical Report: Using Microwaves for
Measuring Blade Play in a Fiber Grinding Machine", KCL P8636, 02-09-1986
- A preliminary report on feasibility of using microwaves for
measuring blade play in a grinder. Continuous measurement would allow
replacement of the blade in time and save in fiber quality, energy and
productivity.
Henrik Stenlund, "Technical Report: Measuring the Hydrodynamic Pressure
in a Wet Pressing Process",
KCL P8630 06-03-1986
- A theoretical report on measuring the hydrodynamic pressure
of water and fiber mixture in a wet press for paper production. Part 3.
Henrik Stenlund, "Technical Report: Design of the Vacuum System for the
Wet Press Simulator Instrument",
KCL P8630 01-20-1986
- A vacuum pumping station was designed for measuring the
hydrodynamic pressure of water and fiber mixture in a wet press for paper
production. Pumping equations were solved and recommendations were given for
proper building of the system.
Henrik Stenlund, "Technical Report: Measuring the Hydrodynamic Pressure
in a Wet Pressing Process",
KCL S8630 01-10-1986
- A theoretical report on measuring the hydrodynamic pressure
of water and fiber mixture in a wet press for paper production. Part 2.
Henrik Stenlund, "Technical Report: Measuring the Hydrodynamic Pressure
in a Wet Pressing Process",
KCL S8545 12-04-1985
- A theoretical report on measuring the hydrodynamic pressure
of water and fiber mixture in a wet press for paper production. Part 1.
Henrik Stenlund, Department of Chemistry, University of Helsinki, "Time-of-Flight Mass Spectrometry", Finnish Physical Society Meeting, Oulu, 2-8-1985
- A prototype of a reflection type TOFMS is presented.
Henrik Stenlund, "Technical Report: Design of
an Ultrasound Sensor Head for Sinuscan Sinuitis Diagnosing Device",
Orion Pharma Oy, Orion Analytica, 05-08-1984
- a feasibility study over an ultrasound transducer for the
Sinuscan brand analyzer. Ultrasonics was studied both in theory and practice. As
a result, manufacturing guidance was established for the product.
Henrik Stenlund, "Theory of Ionization",
a lecture presented at Orion Pharma Oy, Orion Analytica, 02-19-1981
- a lecture over various ionization methods for gases was
given. Also some ion mass separation techniques were explained.
Henrik Stenlund,
"Design of a High Intensity Electron Gun and Its Focusing System",
Res. rep. 2/1980, Helsinki University of Technology, Laboratory of Physics
- Electron optical system design with magnetic lenses for an X-ray system. The spherical electron gun design is also described in detail.
Henrik Stenlund, "Quantum Theory of Interstitial Diffusion of Light Impurities in Si and Ge", University of Helsinki, Department of Theoretical Physics, 1979, a Licenciate Thesis
- A quantum mechanical treatment for calculating the diffusion coefficients of Li in Si and Ge. The theory is based on using multiphonon collision theory and transport theory.
Henrik Stenlund, "Quantum Theory of Interstitial Diffusion", University of Helsinki, 1979, a private study
- A quantum mechanical treatment for calculating the diffusion coefficients of Li in Si and Ge. The theory is based on using a restricted plane wave expansion in a special potential model and transport theory.
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