Results 101 to 110 of about 6,366,194 (281)

Exact lower and upper bounds on the incomplete gamma function

open access: yes, 2020
Lower and upper bounds Ba(x) on the incomplete gamma function Γ(a,x) are given for all real a and all real x\u3e0. These bounds Ba(x) are exact in the sense that Ba(x) ∼ Γ(a,x) x↓0 and Ba(x) ∼ Γ(a,x).
Iosif Pinelis, Pinelis, Iosif
core   +1 more source

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

open access: yesAdvanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler   +7 more
wiley   +1 more source

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

open access: yesAdvanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang   +14 more
wiley   +1 more source

On the Containment of the Unit Disc Image by Analytical Functions in the Lemniscate and Nephroid Domains

open access: yesMathematics
Suppose that A1 is a class of analytic functions f:D={z∈C:|z|
Saiful R. Mondal
doaj   +1 more source

Remarks on Gauss’s Formula Associated with the Gamma Function

open access: yes, 2015
[[abstract]]The purpose of this paper is to prove the famous Gauss’s formula for the Gamma function by means of simple and elementary calculas. In [1] and [2], Theorem 2.1. is proved by using the logarithmic convexity of the Gamma function.
Shozo Niizeki
core  

Advanced Materials for Biologics Delivery to Brain Tumors

open access: yesAdvanced Materials, EarlyView.
Material innovation is central to unlocking the therapeutic potential of biologics against many central nervous system diseases, including brain cancer. By engineering carriers with controlled transport, targeting, and release properties, advanced materials can overcome the blood–brain barrier and tumor microenvironment, improving the delivery of ...
Yuran Feng   +4 more
wiley   +1 more source

High-Power Wind Turbine: Performance Calculation

open access: yesMATEC Web of Conferences, 2015
The paper is devoted to high-power wind turbine performance calculation using Pearson’s chi-squared test the statistical hypothesis on distribution of general totality of air velocities by Weibull-Gnedenko.
Goldaev Sergey V., Radyuk Karina N.
doaj   +1 more source

Application of incomplete gamma function to the initialization of fractional-order systems

open access: yes, 2008
This paper reviews some properties of the gamma function, particularly the incomplete gamma function and its complement, as a function of the Laplace variable s.
Carl F Lorenzo, Tom T Hartley
core  

Inductively Expandable Supraparticles as Microscopic Force Generators for Remote Mechanical Actuation

open access: yesAdvanced Materials, EarlyView.
This study demonstrates the combination of magnetic nanoparticles and functional blowing agents into supraparticles. Upon induction heating, they actuate via rapid gas generation or extensive volume expansion. These supraparticles lift up to 25 000 times their own mass and rapidly open cured epoxy resins, providing a versatile strategy for fast micron ...
Leoni Luthardt   +3 more
wiley   +1 more source

Analysis representation of the coefficients of an ideal fractional-order digital differentiator

open access: yes四川大学学报. 自然科学版
This paper demonstrates that the coefficients of an ideal fractional-order digital differentiator are equal to the values of the fractional-order derivatives of the Sinc function at integer points.The coefficients of the ideal fractional-order digital ...
YANG Jin-Song, YANG Zi-Yi, YUAN Xiao
doaj  

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