• Energy Research

Abstract In a recent work we have shown that quantum mechanics could be, and had to be extended to negative energy states, which go with negative masses. The Janus Cosmological Model has introduced negative energy and negative mass particles, with good agreement with observational data. Based on the metric properties of JCM we suggest a mass inversion process which would make possible interstellar travels in moderate travel times. In addition our craft would not need any propulsion system.

status: published

Nachdem wir die tiefe Krise heraufbeschworen haben, die Kosmologie und Physik kennen, untersuchen wir die verschiedenen Versuche, negative Massen in das kosmologische Modell einzuführen. Nur das kosmologische Janus-Modell weist sowohl eine mathematische als auch eine physikalische Kohärenz auf und ist durch zahlreiche Beobachtungen bestätigt worden. Es stellt sich als geometrische Erweiterung der allgemeinen Relativitätstheorie dar und ist eine mögliche Lösung für die Krise der Kosmologie. Après avoir évoqué la crise profonde que connaissent la cosmologie et la physique, nous examinons les différentes tentatives d'introduction de masses négatives dans le modèle cosmologique. Seul le modèle cosmologique de Janus présente à la fois une cohérence mathématique et physique, ainsi que de nombreuses confirmations observationnelles. Se présentant comme une extension géométrique de la relativité générale, il représente une solution possible à la crise de la cosmologie. After having evoked the deep crisis that cosmology and physics know, we examine the different attempts to introduce negative masses in the cosmological model. Only the Janus cosmological model presents both a mathematical and physical coherence, as well as numerous observational confirmations. Presenting itself as a geometrical extension of general relativity, it represents a possible solution to the crisis of cosmology.

International audience ; Nachdem wir die tiefe Krise heraufbeschworen haben, die Kosmologie und Physik kennen, untersuchen wir die verschiedenen Versuche, negative Massen in das kosmologische Modell einzuführen. Nur das kosmologische Janus-Modell weist sowohl eine mathematische als auch eine physikalische Kohärenz auf und ist durch zahlreiche Beobachtungen bestätigt worden. Es stellt sich als geometrische Erweiterung der allgemeinen Relativitätstheorie dar und ist eine mögliche Lösung für die Krise der Kosmologie. ; After having evoked the deep crisis that cosmology and physics know, we examine the different attempts to introduce negative masses in the cosmological model. Only the Janus cosmological model presents both a mathematical and physical coherence, as well as numerous observational confirmations. Presenting itself as a geometrical extension of general relativity, it represents a possible solution to the crisis of cosmology. ; Après avoir évoqué la crise profonde que connaissent la cosmologie et la physique, nous examinons les différentes tentatives d'introduction de masses négatives dans le modèle cosmologique. Seul le modèle cosmologique de Janus présente à la fois une cohérence mathématique et physique, ainsi que de nombreuses confirmations observationnelles. Se présentant comme une extension géométrique de la relativité générale, il représente une solution possible à la crise de la cosmologie.

Harnessing energy from ocean waves in an economic manner remains a challenge. Recent efforts are targeted at improving the performance of a wave energy device without resorting to reactive control. One such strategy is to use a negative stiffness mechanism. Theoretically, negative stiffness is able not only to lengthen the resonance period of the device, but also to broaden its resonance bandwidth, thus making it potentially capable of capturing energy from a broader spectrum of incoming waves. This study aims to extend the application of such mechanism to pitching wave energy devices by studying Salter-duck type devices as a specific case. We consider first a single duck, and then two lines of multiple ducks meeting at an angle. The analysis is carried out using linear frequency-domain models. For this purpose, equivalent linearised stiffness of the negative stiffness mechanism is derived. Our study confirms that negative stiffness improves the power performance of pitching devices. However, it is most effective when the pitch rotation axis is fixed. It becomes less effective when the axis is allowed to move.

Direct Air Capture (DAC) is regarded as an effective method to decrease the concentration of CO2 in the atmosphere and thus alleviate the greenhouse effect. This article conducts a comparative analysis of the CO2 emissions of 12 state-of-the-art DAC technologies. The evaluations consider regional (EU, USA, and China) and temporal (years 2023, 2030, and 2050) energy supply variations. It is found that the CO2 emissions generally decrease over time for all the different regions considered. The best CO2 emission performance is found in Europe, followed by the United States and China. The evaluation also finds that currently a substantial number of DAC technologies could not achieve net-negative emission, especially for China. In 2050, most of the DAC technologies are found to perform significantly better in terms of their negative emission performance. We also found that the utilization of fossil fuels, especially coal, needed to operate the DAC process, substantially hinders its ability to achieve net-negative emission. Electrochemical-based technologies are found to outperform others in all scenarios, especially when powered with renewable electricity. The DAC technologies relying on steambased sorbent regeneration can greatly reduce their CO2 emission when low-carbon energy is used for steam generation. Finally, in all the different scenarios, the DAC technologies incorporating high-temperature calcination regenerations exhibit the worst performance due to the lack of low-emission energies for generating fired heat.

Climate change and increasing population pressure make it increasingly urgent to find ways to improve the management of the water-energy nexus. The desalination, pumping, distribution, and treatment of water use significant energy resources. The extraction and production of energy consume substantial amounts of water resources. In addition, negative effects on the environment are often the consequences of the management of the water and energy sectors. The report highlights the prospects for addressing these and other challenges at the water-energy nexus. It does this by drawing, in part, on some of the most important breakthroughs in the nexus that have come from the region.

Hlavní náplní této práce bylo hlouběji proniknout do problematiky obnovitelných zdrojů energie. Jednak jsme se jednotlivými typy obecně zabývali a přiblížili si jejich charakteristiky, ale zejména se zaměřili na negativní dopady, které s sebou nesou. Vzhledem k tomu, že obnovitelné zdroje energie jsou naší budoucností, je třeba obeznámit se s jejich potenciálem, možnými nedostatky, mírou závažnosti těchto problémů a případnými řešeními. V poslední části práce jsme se zabývali využíváním obnovitelných zdrojů v České republice a vyhodnocením stávající politiky a energetického trhu. The main focus of this work was to delve deeper into the issue of renewable energy. Firstly, we have looked at the different types in general and their characteristics, but in particular we have focused on the negative impacts they bring. Since renewable energy sources are our future, it is necessary to become familiar with their potential, possible shortcomings, the degree of severity of these problems and possible solutions. In the last part of the thesis, we looked at the use of renewables in the Czech Republic and evaluated the current policy and energy market. C