Results 41 to 50 of about 17,940 (252)
Applied Sciences, 2023 Trochoidal milling is an efficient strategy for the rough machining of difficult-to-cut materials. The true trochoidal toolpath has C2 continuity and avoids sharp changes in engagement angle and cutting load, resulting in smooth machine tool movement ...
Xu Zhou +4 more
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FEBS Open Bio, EarlyView.This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill +4 more
wiley +1 more source
, 2013 A polarization ellipse, from this figure the Stokes parameters are defined. A is the amplitude of the wave, β the angle relating the two principalaxes of the ellipse, φ0 the polarization angle and z is the direction of propagation.When β = 0, ± π2 the ...
Magnus Vilhelm Persson (388643)
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El discutido influjo de la Historia Roderici en el Cantar de mio Cid
E-Spania, 2013 L’hypothèse d’un rapport entre le Cantar de mio Cid et l’Historia Roderici a soulevé, comme on sait, une querelle vive et encore irrésolue. Cette étude se propose de revisiter la question en soumettant à un nouvel examen deux passages de la biographie ...
Salvatore Luongo
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Derivation of closed-form ellipsoidal X-ray mirror shapes from Fermat's principle
Journal of Synchrotron Radiation, 2022 Ellipsoidal and plane-elliptical surfaces are widely used as reflective, point-to-point focusing elements in many optical systems, including X-ray optics.
Kenneth A. Goldberg
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How phagocytic cells kill bacteria: Lessons from a professional killer
FEBS Open Bio, EarlyView.How phagocytic cells ingest and kill bacteria has been studied for more than a century, but many questions remain unanswered. The study of the amoeba Dictyostelium discoideum brings new answers, and new questions. Professional phagocytic cells such as neutrophils and macrophages, as well as free‐living soil amoebae like Dictyostelium discoideum, employ
Otmane Lamrabet, Pierre Cosson
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The perimeter of a flattened ellipse can be estimated accurately even from Maclaurin’s series
Cubo, 2019 For the perimeter $P(a,b)$ of an ellipse with the semi-axes $a\ge b\ge 0$ a sequence $Q_n(a,b)$ is constructed such that the relative error of the approximation $ P(a,b)\approx Q_n(a,b)$ satisfies the following inequalities \begin{align*} 0\le -\frac{
Vito Lampret
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021 Aiming at the problem of camshaft torsional oscillation caused by the torque of the engine camshaft spring, this paper carries out the research on the compensation of the elliptical pulley timing system for the torsional oscillation of the camshaft.
Jianhua GUO +5 more
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Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source
A New Hough Transform Mapping for Ellipse Detection [PDF]
, 1995 Detecting geometric primitives in images is one of the basic tasks of computer vision. The Hough transform (HT) and its extensions constitute a popular method for extracting geometric shapes. Primitives on the HT are represented by parametric curves with
Nixon, M.S., Aguado, A.S.
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