Objective: To present a new theoretical construct, the Minimum Energy Hypothesis, which explains structural changes observed in the spine concomitant to spinal joint fixation resolution in initial investigations.
Design: Theoretical analysis.
Hypothesis: A unified theory of manipulative effectiveness is proposed that integrates the fixation and sensory tonus models of manipulation. The theory is based on the fact that the spine will assume a position of minimum internal energy when mechanical equilibrium is achieved. By using a simple mathematical model, it is shown that the fixation model and the sensory tonus models are 2 different aspects of the same theoretical construct. The Minimum Energy Hypothesis predicts that the spine will seek an optimal minimum energy configuration if the constraints preventing it from doing so are removed. Constraints are hypothesized to be joint fixations caused by inflammation in and about the spine and its sequella, muscle spasm, fibroadipose and scar tissue, and ultimately, degeneration. It is further hypothesized that the use of a computerized mechanical manipulative device may resolve such fixations, an example of which is radiographically demonstrable cervical hypolordosis.
Conclusion: A unified theory of manipulative effectiveness based on the concept of minimum energy to attain mechanical equilibrium is brought forward to explain the results of initial investigations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1067/mmt.2002.121412 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Minimum Energy Conical Intersection Optimization Using DFT/MRCI(2).
J Chem Theory Comput
January 2025
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5,Canada.
The combined density functional theory and multireference configuration interaction (DFT/MRCI) method is a semiempirical electronic structure approach that is both computationally efficient and has predictive accuracy for the calculation of electronic excited states and for the simulation of electronic spectroscopies. However, given that the reference space is generated via a selected-CI procedure, a challenge arises in the construction of smooth potential energy surfaces. To address this issue, we treat the local discontinuities that arise as noise within the Gaussian progress regression framework and learn the surfaces by explicitly incorporating and optimizing a white-noise kernel.
View Article and Find Full Text PDFHerbal decoctions always contain numerous plant microRNAs (miRNAs), and some of these can be absorbed orally to exert cross-kingdom gene regulation. However, little is known about which specific types of herbal decoction-borne plant miRNAs are more likely to be absorbed. Thus, two antiviral herbal decoctions, Qingfei Paidu (QFPD) and Qingre Huashi Kangdu (QRHS), were administered to human volunteers and rats, respectively, to investigate the characteristics of orally absorbed decoction-borne plant miRNAs.
View Article and Find Full Text PDFTorsion-Vibration Interactions in S and S Phenylsilane.
J Phys Chem A
January 2025
College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia.
We report the results of a study of the interaction between torsion and the low frequency out-of-plane silyl wag vibration in the ground, S, and excited, S, electronic states of phenylsilane. These studies follow the observation of interactions between methyl torsion and the out-of-plane methyl wagging vibration in toluene, several fluoro-substituted toluenes and -methylpyrrole. The interaction leads to various spectroscopic constants becoming divorced from their usual physical meaning.
View Article and Find Full Text PDFProbing London Dispersion in Proton-Bound Onium Ions: Are Alkyl-Alkyl Steric Interactions Reliably Modeled?
J Am Chem Soc
January 2025
Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich 8093, Switzerland.
We report spectroscopic and spectrometric experiments that probe the London dispersion interaction between -butyl substituents in three series of covalently linked, protonated -pyridines in the gas phase. Molecular ions in the three test series, along with several reference molecules for control, were electrosprayed from solution into the gas phase and then probed by infrared multiphoton dissociation spectroscopy and trapped ion mobility spectrometry. The observed N-H stretching frequencies provided an experimental readout diagnostic of the ground-state geometry of each ion, which could be furthermore compared to a second, independent structural readout via the collision cross section.
View Article and Find Full Text PDFOptimizing key parameters for grinding energy efficiency and modeling of particle size distribution in a stirred ball mill.
Sci Rep
January 2025
Minerals Beneficiation and Agglomeration Department, Minerals Technology Institute, Central Metallurgical Research & Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, 11722, Egypt.
Fine grinding using a stirred ball mill can enhance ore liberation but incurs high energy consumption, which can be minimized by optimizing operating conditions. This study explores the impact of key operational parameters-grinding time, stirrer tip speed, solid concentration, and feed size-on grinding efficiency, evaluated using specific energy inputs, in stirred milling of Egyptian copper ore. The particle size distribution (PSD) of ground products was simulated using the Gates-Gaudin-Schuhmann model (GGS) and the Rosin-Rammler-Benne (RRB) function.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!