Jan Helm - Articles - Scientific Research Publishing

New Solutions of Gravitational Collapse in General Relativity and in the Newtonian Limit (Articles)

Jan Helm

Journal of High Energy Physics, Gravitation and Cosmology Vol.8 No.2，April 29, 2022

DOI: 10.4236/jhepgc.2022.82034 226 Downloads 1,485 Views Citations
Approximate and Exact GR-Solutions for the Two-Body Problem (Articles)

Jan Helm

Journal of High Energy Physics, Gravitation and Cosmology Vol.8 No.3，July 28, 2022

DOI: 10.4236/jhepgc.2022.83051 1,964 Downloads 3,303 Views Citations
New Solutions of Tolman-Oppenheimer-Volkov-Equation and of Kerr Spacetime with Matter and the Corresponding Star Models (Articles)

Jan Helm

Journal of High Energy Physics, Gravitation and Cosmology Vol.8 No.3，July 28, 2022

DOI: 10.4236/jhepgc.2022.83052 392 Downloads 2,222 Views Citations
Quantum Chromodynamics on Lattice: Direct Minimization of QCD-QED-Action with New Results (Articles)

Jan Helm

Journal of High Energy Physics, Gravitation and Cosmology Vol.10 No.1，January 29, 2024

DOI: 10.4236/jhepgc.2024.101019 130 Downloads 399 Views Citations
Calculation of the Standard Model Parameters and Particles Based on a SU(4) Preon Model (Articles)

Jan Helm

Journal of Modern Physics Vol.15 No.1，January 30, 2024

DOI: 10.4236/jmp.2024.151003 106 Downloads 409 Views Citations
A New Version of the Lambda-CDM Cosmological Model, with Extensions and New Calculations (Articles)

Jan Helm

Journal of Modern Physics Vol.15 No.2，February 23, 2024

DOI: 10.4236/jmp.2024.152011 172 Downloads 807 Views Citations
This article belongs to the Special Issue on Gravitation, Astrophysics and Cosmology
Calculation of Particle Decay Times in the Standard Model (Articles)

Jan Helm

Journal of Modern Physics Vol.15 No.3，February 29, 2024

DOI: 10.4236/jmp.2024.153014 170 Downloads 943 Views Citations
This article belongs to the Special Issue on High Energy Physics
Ashtekar-Kodama Gravity as a Classical and Quantum Extension of Loop Quantum Gravity (Articles)

Jan Helm

Journal of Modern Physics Vol.15 No.6，May 24, 2024

DOI: 10.4236/jmp.2024.156038 114 Downloads 425 Views Citations
Origin and Basic Mechanism of Life (Articles)

Jan Helm

Open Journal of Biophysics Vol.14 No.3，June 6, 2024

DOI: 10.4236/ojbiphy.2024.143011 122 Downloads 497 Views Citations
Bridging Art and Science: STEAM Lessons and Their Impact on Pupils’ Learning Motivation Characteristics (Articles)

Julia Lauss, Christoph Helm

Creative Education Vol.16 No.4，April 22, 2025

DOI: 10.4236/ce.2025.164030 55 Downloads 258 Views Citations
This article belongs to the Special Issue on Science Education
A Study Protocol on the Evaluation of Referral Strategies for Inflammatory Arthritis in Primary Care Patients at the Level of Healthcare Organization, Patient Relevant Outcomes and Costs (Articles)

Elke Theodora Antonia Maria van Delft, Deirisa Lopes Barreto, Jan Arno Matteo Roeterink, Khik Hoo Han, Ilja Tchetverikov, Anna Helena Maria van der Helm-van Mil, Johanna Maria Wilhelmina Hazes, Angelique Elisabeth Adriana Maria Weel

Health Vol.12 No.3，March 13, 2020

DOI: 10.4236/health.2020.123020 589 Downloads 1,493 Views Citations
A Longitudinal Analysis of the Stability of Household Money Demand (Articles)

Jan Tin

Modern Economy Vol.2 No.3，July 28, 2011

DOI: 10.4236/me.2011.23046 6,977 Downloads 12,060 Views Citations
A Spectral Method in Time for Initial-Value Problems (Articles)

Jan Scheffel

American Journal of Computational Mathematics Vol.2 No.3，September 28, 2012

DOI: 10.4236/ajcm.2012.23023 7,546 Downloads 12,320 Views Citations
Operationalizing Sustainability Principles in the Engineering Profession (Articles)

Jan Adamowski

Natural Resources Vol.3 No.4，December 21, 2012

DOI: 10.4236/nr.2012.34024 5,490 Downloads 8,290 Views Citations
Chaos in Planar, Circular, Restricted Three-Body Problem (Articles)

Jan Vrbik

Applied Mathematics Vol.4 No.1，January 25, 2013

DOI: 10.4236/am.2013.41008 6,703 Downloads 9,759 Views Citations
Short Report: A Sponge Phantom Provides a Homogeneous k-Space Pattern at MRI (Articles)

Jan Menke

Open Journal of Radiology Vol.4 No.2，June 17, 2014

DOI: 10.4236/ojrad.2014.42026 7,877 Downloads 9,343 Views Citations
Compound Means and Fast Computation of Radicals (Articles)

Jan Šustek

Applied Mathematics Vol.5 No.16，September 2, 2014

DOI: 10.4236/am.2014.516241 5,328 Downloads 6,058 Views Citations
Fully Integrated High-Voltage Generators with Optimized Power Efficiency (Articles)

Doutreloigne Jan

Journal of Computer and Communications Vol.2 No.13，November 19, 2014

DOI: 10.4236/jcc.2014.213001 5,345 Downloads 6,287 Views Citations
Production of Methane Emissions from Ruminant Husbandry: A Review (Articles)

Jan Broucek

Journal of Environmental Protection Vol.5 No.15，November 26, 2014

DOI: 10.4236/jep.2014.515141 18,348 Downloads 25,890 Views Citations
This article belongs to the Special Issue on Environmental Management
Time Series Econometrics: A Critique (Articles)

Jan Kmenta

Open Journal of Applied Sciences Vol.5 No.12，December 30, 2015

DOI: 10.4236/ojapps.2015.512081 6,248 Downloads 8,344 Views Citations

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