Results 31 to 40 of about 139,769 (296)

Crafting Conic Sections [PDF]

open access: yesMath Horizons, 2021
Circles, ellipses, parabolas, and hyperbolas are called conic sections because each of these curves arises as the boundary of a slice of a cone. Imagine slicing a solid cone of clay.
openaire   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

open access: yesMolecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen   +11 more
wiley   +1 more source

Numerical and experimental investigation of swirling flow in a conical diffuser

open access: yesEPJ Web of Conferences, 2015
The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus ...
David Štefan   +3 more
doaj   +1 more source

Une caractéristique pour les unifier toutes et dans l’harmonie les lier. Unification des équations dans les textes De la méthode de l’universalité

open access: yesPhilosophia Scientiæ, 2021
Living in Paris is known to have a significant influence on the development of Leibnizian thought. During this period, Leibniz met many scientists, discovered mathematics and became a prolific writer.
Simon Gentil
doaj   +1 more source

Electromagnetic conic sections [PDF]

open access: yesAmerican Journal of Physics, 2002
Certain orthogonal coordinate systems naturally correspond to basis vectors which are both curl-free and divergence-free, and hence solve Maxwell’s equations. After first comparing several different traditional approaches to computing div, grad, and curl in curvilinear coordinates, we present a new approach, based on these “electromagnetic” basis ...
Tevian Dray, Corinne A. Manogue
openaire   +1 more source

Peculiarities of rolling in caliber conical roll [PDF]

open access: yes, 2013
Theoretically and experimentally analyzed rolling of sections and reduction rolling in calibers four conical rollers. Describe the kinematics of metal flow during rolling strips in square and round calibers.
Андрюкова, Е. А.   +2 more
core  

Springer theory via the Hitchin fibration [PDF]

open access: yes, 2011
In this paper, we translate the Springer theory of Weyl group representations into the language of symplectic topology. Given a semisimple complex group G, we describe a Lagrangian brane in the cotangent bundle of the adjoint quotient g/G that produces ...
Borho   +6 more
core   +1 more source

Establishment of a humanized patient‐derived xenograft mouse model of high‐grade serous ovarian cancer for preclinical evaluation of combination immunotherapy

open access: yesMolecular Oncology, EarlyView.
We have established a humanized orthotopic patient‐derived xenograft (Hu‐oPDX) mouse model of high‐grade serous ovarian cancer (HGSOC) that recapitulates human tumor–immune interactions. Using combined anti‐PD‐L1/anti‐CD73 immunotherapy, we demonstrate the model's improved biological relevance and enhanced translational value for preclinical ...
Luka Tandaric   +10 more
wiley   +1 more source

STUDY REGARDING THE GEOMETRY OF SOME PIECES USED IN FLAT-OVAL DUCTS

open access: yesJournal of Industrial Design and Engineering Graphics, 2022
Nowadays people spend increasingly more time indoors, which has led to higher expectations in terms of comfort and indoor air quality. In this respect, an important role belongs to the ventilation and air conditioning systems, which transport fresh or ...
Carmen MARZA   +2 more
doaj  

Release mechanisms and waves interaction during liquified CO2 depressurization in a double-membrane conical vessel

open access: yesSN Applied Sciences, 2022
An unintended release of liquid CO2 during its transport results in depressurization with rapid phase transitions, evaporation, and expansion. Such progression may lead to catastrophic container failure with boiling liquid expanding vapor explosion ...
Osama M. Ibrahim   +3 more
doaj   +1 more source

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