Results 21 to 30 of about 2,746,619 (87)

Remark on functions with all derivatives univalent

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 3, Issue 1, Page 193-196, 1980., 1980
An attractive conjecture is discounted for the class of normalized univalent functions whose derivatives are also univalent.
M. Lachance
wiley   +1 more source

Experimental and Numerical Investigations of Flow Incidence Effects on Surface Pressure Distributions of Axial Compressor Blades

open access: yes, 2015
In the present research work, intensive investigations were performed on axial compressor blades from experimental and numerical point of views and results are confined to variations of surface pressure distributions versus flow incidence. Test model was
Reza   +6 more
semanticscholar   +1 more source

Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China

open access: yesNational Science Review, 2020
To control the spread of the 2019 novel coronavirus (COVID-19), China imposed nationwide restrictions on the movement of its population (lockdown) after the Chinese New Year of 2020, leading to large reductions in economic activities and associated ...
Xin Huang   +26 more
semanticscholar   +1 more source

Dysbiosis-Induced Secondary Bile Acid Deficiency Promotes Intestinal Inflammation.

open access: yesCell Host and Microbe, 2020
Secondary bile acids (SBAs) are derived from primary bile acids (PBAs) in a process reliant on biosynthetic capabilities possessed by few microbes. To evaluate the role of BAs in intestinal inflammation, we performed metabolomic, microbiome, metagenomic,
S. Sinha   +14 more
semanticscholar   +1 more source

Percutaneous Repair or Medical Treatment for Secondary Mitral Regurgitation

open access: yesNew England Journal of Medicine, 2018
BACKGROUND In patients who have chronic heart failure with reduced left ventricular ejection fraction, severe secondary mitral‐valve regurgitation is associated with a poor prognosis. Whether percutaneous mitral‐valve repair improves clinical outcomes in
J. Obadia   +29 more
semanticscholar   +1 more source

Second Hankel determinant for bi-starlike and bi-convex functions of order \b{eta}

open access: yes, 2015
In the present investigation the authors obtain upper bounds for the second Hankel determinant of the classes bi-starlike and bi-convex functions of order beta.Comment: 8 pages, submitted to a ...
Deniz, Erhan   +2 more
core   +1 more source

Hardy spaces and unbounded quasidisks

open access: yes, 2010
We study the maximal number $0\le h\le+\infty$ for a given plane domain $\Omega$ such that $f\in H^p$ whenever ...
Kim, Yong Chan, Sugawa, Toshiyuki
core   +1 more source

Stress and defense responses in plant secondary metabolites production

open access: yesBiological Research, 2019
In the growth condition(s) of plants, numerous secondary metabolites (SMs) are produced by them to serve variety of cellular functions essential for physiological processes, and recent increasing evidences have implicated stress and defense response ...
T. Isah
semanticscholar   +1 more source

A note on successive coefficients of convex functions

open access: yes, 2016
In this note, we investigate the supremum and the infimum of the functional $|a_{n+1}|-|a_{n}|$ for functions, convex and analytic on the unit disk, of the form $f(z)=z+a_2z^2+a_3z^3+\dots.$ We also consider the related problem to maximize the functional
Li, Ming, Sugawa, Toshiyuki
core   +1 more source

Some properties of a class of holomorphic functions associated with tangent function

open access: yesDemonstratio Mathematica
In this study, we define new class of holomorphic functions associated with tangent function. Furthermore, we examine the differential subordination implementation results related to Janowski and tangent functions. Also, we investigate some extreme point
Khan Muhammad Ghaffar   +5 more
doaj   +1 more source

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