1993
Résultats de recherche
Il y a 11 heures · Riemannian manifold. In differential geometry, a Riemannian manifold (or Riemannian space) , so called after the German mathematician Bernhard Riemann, is a real, smooth manifold equipped with a smoothly-varying family of positive-definite inner products on the tangent spaces at each point .
Il y a 11 heures · DEATH VALLEY, Calif. (AP) — Hundreds of Europeans touring the American West and adventurers from around the U.S. were still drawn to Death Valley National Park on Monday, even though the desolate region known as one of the Earth's hottest places is being punished by a dangerous heat wave blamed for a motorcyclist's death over the weekend.
Il y a 11 heures · Various eco-friendly techniques are being researched for synthesizing ZnO-NPs, known for their bioactivity. This study aimed at biosynthesizing ZnO-NPs using Streptomyces baarnensis MH-133, characterizing their physicochemical properties, investigating antibacterial activity, and enhancement of their efficacy by combining them with a water-insoluble active compound (Ka) in a nanoemulsion form ...
Il y a 11 heures · There are brothers like Yung Bredda and others who use the Trinibad music but they sing positive things. And when you do, then we must support that, because the world is so nasty and full of negative things. "So when people come with something positive, it is to be respected, it is to be valued and it is to be supported.
Il y a 11 heures · Πότε βγαίνει στις αγορές η ΔΕΗ, η Σδούκου, ο Αϊβαλιώτης και οι μνηστήρες των μεταλλείων σε Χίο – Ξάνθη και ένα άγνωστο story για τη Σακελλαρίδη
Il y a 11 heures · The adsorption process reached equilibrium rapidly, and the Langmuir adsorption capacities increased with temperature, measuring 286.40 mg/g, 315.51 mg/g, and 349.70 mg/g at 298 K, 308 K, and 318 K, respectively. Thermodynamic analysis revealed positive values for ΔH0 and ΔS0, indicating an endothermic and spontaneous adsorption process.
Il y a 1 jour · Regelkreis. Als Regelkreis wird der dynamische Wirkungsablauf zwischen Regler und Regelstrecke zur Beeinflussung der Regelgröße in einem geschlossenen System bezeichnet, bei dem diese Größe fortlaufend gemessen und mit der Führungsgröße verglichen wird. [1] Wesentlich hierbei ist die Gegenkopplung (= negative Rückkopplung) des aktuellen ...
