M. Karam Ouharou

Vers l'avenir des semi-conducteurs :  Recherche et développement de matériaux avancés et de dispositifs quantiques

  BREF L'étude des particules élémentaires constitue l'un des domaines les plus fascinants de la physique moderne. Depuis des décennies, les scientifiques se sont engagés dans une quête incessante pour comprendre la structure fondamentale de l'univers. Dans cet article, nous explorons les développements récents et les avancées majeures dans le domaine des particules, en mettant l'accent sur la découverte du boson de Higgs, l'exploration des neutrinos et la recherche de nouvelles particules au-delà du Modèle standard. Les particules élémentaires sont les briques fondamentales de la matière et de ses interactions. Le modèle standard de la physique des particules, développé au cours du 20e siècle, a fourni une description robuste de ces particules et de leurs interactions. Cependant, de nombreuses questions fondamentales restent sans réponse, ce qui motive les chercheurs à explorer de nouvelles frontières. En 2012, une découverte historique a été faite au Large...

  ❶ One of the primary concerns that people have about drug manufacturers is the high cost of prescription medications. Many believe that drug companies prioritize profits over the well-being of patients, resulting in exorbitant prices for lifesaving drugs. The cost of some medications can be prohibitive, and people who need them may not be able to afford them. This has led to debates about access to healthcare and the need for government intervention in regulating drug prices. ❷ Another issue that has been raised is the role of drug manufacturers in promoting the overuse of prescription drugs. Some people believe that drug manufacturers engage in aggressive marketing practices, encouraging doctors to prescribe their drugs for conditions that may not necessarily require medication. In some cases, drug companies have been accused of downplaying the risks associated with their products, or failing to disclose negative clinical trial data. ❸ There have also been concerns ...

❶ Drug manufacturers play a crucial role in providing medicines to people all over the world. However, there have been numerous instances where these companies have engaged in unethical practices, putting profits before the health and safety of their customers. This article will examine some of the evils of drug manufacturers and their impact on society. ❷ One of the most egregious practices of drug manufacturers is the deliberate manipulation of clinical trial data. In many cases, companies will only publish positive results from their trials and conceal negative ones. This can result in patients being prescribed drugs that are less effective or more dangerous than advertised. In some cases, this can even lead to death. ❸ Another issue is the over prescription of certain drugs. Pharmaceutical companies often engage in aggressive marketing campaigns to push doctors to prescribe their drugs, even when they are not necessary or appropriate. This has led to widespread addiction and abuse ...

 On Monday 6 February, at 4.17 a.m., a 7.8 magnitude earthquake struck Turkey and Syria. Earthquakes in this part of the world are common, but the magnitude of this one is clearly impressive: to find an earthquake this strong on this fault, you have to go back to 1114. Ten minutes after the strongest quake, a 6.7 magnitude aftershock occurred near the epicentre and other aftershocks continue to occur in an area stretching over 350 kilometres from eastern Turkey to the Syrian border. These 'aftershocks', the earthquakes that occur after a major earthquake, are expected and their statistical behaviour is well known. More surprisingly and dramatically, a second earthquake of magnitude 7.5 occurred at 13:24 local time, further north. This earthquake is not an aftershock: according to the first data processed live by the major international seismological agencies, it occurred on an east-west fault cutting the main rupture. We do not yet have all the information provided by satellite...

A 2022 measurement of the mass of the W boson threatened to up end particle physics as we know it, but new results from CERN indicate the standard model was right all along

  La récente théorie radicale selon laquelle les rides sont en fait à l'origine du vieillissement   LE JOUR DE SON 120e anniversaire, Jeanne Calment - généralement considérée comme la personne la plus âgée ayant jamais vécu - a prouvé qu'elle avait encore toute sa tête : "Je n'ai qu'une seule ride", dit-elle avec humour, "et je m'assois dessus". C'est drôle, mais c'est faux. La Française est alors extrêmement ridée. Sur l'échelle des rides de Fitzpatrick, elle aurait pu être classée dans la catégorie supérieure, avec des rides profondes et une peau décolorée qui avait perdu son élasticité. Quelle surprise ! Elle n'était peut-être pas aussi âgée qu'elle le prétendait, mais elle avait au moins 97 ans. Quiconque vit jusqu'à 100 ans ou plus peut s'attendre à la même chose. Historiquement, ce problème a été considéré par beaucoup comme un problème purement esthétique. Dans certaines cultures, les rides, les affaissements et...