For actual rock masses with massive natural cracks, there are three basic fracture modes, including mode.
Each year animal shelters receive, care for, and rehome dogs, cats, and other companion animals. Even under the best of circumstances, however, shelters can be challenging environments for the animals admitted.
The most non-trivial of the established microscopic theories of physics is QCD the theory of the strong interaction. A critical link between theory and experiment is provided by the methods of perturbative QCD, notably the well-known factorization theorems. Giving an accurate account of the concepts, theorems, and their justification, this book is a systematic treatment of perturbative QCD. As …
Heavy ion collision experiments recreating the quark–gluon plasma that filled the microseconds-old Universe have established that it is a nearly perfect liquid that flows with such minimal dissipation that it cannot be seen as made of particles.
The electroweak theory unifies two basic forces of nature the weak force and electromagnetism. This achievement is comparable to Maxwell’s unification of electricity and magnetism. The theory made numerous predictions that have been confirmed by experiments.
The Standard Model of particle physics is the mathematical theory that describes the weak, electromagnetic and strong interactions between leptons and quarks, the basic particles of the Standard Model. The new edition of this introductory graduate textbook provides a concise but accessible introduction to the Standard Model.
The majority of the world’s largest carbon emitters are either federations or have adopted systems of decentralised governance. The realization of the world’s climate mitigation objectives, therefore, depends in large part on whether and how governments within federal systems can cooperate to reduce carbon emissions and catalyze the emergence of low-carbon societies.
Exactly 100 years ago prof. Joukowsky, one of the founders of modern aerodynamics, published the first rotor performance prediction. The tools of Jankowsky and his contemporaries were mathematics and wind tunnel experiments, nowadays we use mathematics, numerics, full scale experiments and, still, wind tunnel experiments.
The most important fact related with fluid motion is to understand the fluid patterns, and the flow structure †vortices, recirculation zones, high mix regions, poor mix regions, calm regions, to name a few. Moreover, most of the flows have turbulent characteristics and turbulence remains one of the unsolved problems in physics.