Results 41 to 50 of about 610,412 (358)
Positive solutions of higher order fractional integral boundary value problem with a parameter
Nonlinear Analysis, 2019 In this paper, we study a higher-order fractional differential equation with integral boundary conditions and a parameter. Under different conditions of nonlinearity, existence and nonexistence results for positive solutions are derived in terms of ...
Xinan Hao, Luyao Zhang, Lishan Liu
doaj +1 more source
Frontiers in Cellular Neuroscience, 2023 IntroductionUnderstanding how photoreceptor genes are regulated is important for investigating retinal development and disease. While much is known about gene regulation in cones, the mechanism by which tandemly-replicated opsins, such as human long ...
Ashley A. Farre +10 more
doaj +1 more source
Kähler cone substructure [PDF]
Advances in Theoretical and Mathematical Physics, 1998 22 pages (published version)
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti +5 more
wiley +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2012 This paper serves as an addendum to the paper titled Methods of extending lower order problems to higher order problems in the context of smallest eigenvalue comparisons appearing in EJQTDE no. 99, 2011.
Jeffrey Neugebauer
doaj +1 more source
Advanced Engineering Materials, EarlyView.Microstructural evolution and hardness optimization along the cross‐section of friction stir welded AA6061/AlSi10MgMn joints, for electric vehicle battery housings, were investigated. Postweld aging between 170°C and 220°C enhances hardness uniformity within the nugget zone.
Emanuele Ghio, Emanuela Cerri
wiley +1 more source
Periodic boundary value problems for first order difference equations
Electronic Journal of Qualitative Theory of Differential Equations, 2012 In this paper, existence criteria for single and multiple positive solutions of some of periodic boundary value problems for first order difference equation \[\left\{\begin{array}{ll} \Delta x(k)+f(k,x(k+1))=0, & k\in \left[ 0,T\right] ,\\ x(0)=x(T+1), &
Wen Guan, Suang-Hong Ma, Da-Bin Wang
doaj +1 more source
Covering functionals of cones and double cones [PDF]
Journal of Inequalities and Applications, 2018 The least positive number γ such that a convex body K can be covered by m translates of γK is called the covering functional of K (with respect to m), and it is denoted by Γm(K) . Estimating covering functionals of convex bodies is an important part of Chuanming Zong's quantitative program for attacking Hadwiger's covering conjecture.
Senlin Wu, Ke Xu
openaire +4 more sources
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source