Results 111 to 120 of about 645,761 (266)

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni   +10 more
wiley   +1 more source

Agar‐Based Optical Sensing System With a Phosphorescent Grid Pattern for Measuring Stress Distributions of Root Growth Using the Sampling Moiré Method

open access: yesAdvanced Materials Technologies, EarlyView.
This paper presents an agar medium with a phosphorescent grid pattern that measures the stress distribution generated by growing plant roots. Using phosphorescence, the system optically separates the grid pattern from the root and extracts the grid deformation.
Gakuto Kagawa, Hidetoshi Takahashi
wiley   +1 more source

A historical development of the (n+1)-point secant method

open access: yes, 2007
Many finite-dimensional minimization problems and nonlinear equations can be solved using Secant Methods. In this thesis, we present a historical development of the (n + 1)-point Secant Method tracing its evolution back before Newton's Method.
Papakonstantinou, Joanna Maria
core  

A self-scaling memoryless BFGS based conjugate gradient method using multi-step secant condition for unconstrained minimization

open access: yes
summary:Conjugate gradient methods are widely used for solving large-scale unconstrained optimization problems, because they do not need the storage of matrices.
Kim, Yong, Kim, Yongjin, Jong, Yunchol
core   +1 more source

Engineered Mesenchymal Stem Cell–NK Cell Complexes for Spatially Targeted and Functionally Revitalized Cancer Immunotherapy

open access: yesAdvanced Science, EarlyView.
IL‐15‐engineered stem cell–NK cell complexes, assembled via bioorthogonal chemistry, enable effective lung cancer immunotherapy. Abstract Natural killer (NK) cells represent a powerful immunotherapeutic strategy due to their intrinsic cytotoxicity and ability to target tumor cells independently of antigen presentation.
Qian Zhang   +15 more
wiley   +1 more source

An Improved Secant Type Method for Solving Nonlinear Optimization Problems

open access: yes
Abstract This project introduces an improved version of the Modern secant- kind method for solving nonlinear optimization problems. Steffensen’s method is used to generate the initial approximation, eliminating the need for second derivative calculations and improving computational efficiency.
Gouri M Krishna, Sreedeep C D
openaire   +1 more source

Detection of Protein–Protein Interactions in Escherichia coli With Single Molecule Sensitivity

open access: yesAdvanced Science, EarlyView.
This article describes a regulatory circuit in Escherichia coli able to detect protein–protein interactions with exquisite sensitivity. The interaction between two hybrid proteins fused to Bordetella pertussis adenylate cyclase and its activator calmodulin triggers a potent cyclic AMP signaling cascade.
Marilyne Davi, Daniel Ladant
wiley   +1 more source

A modified secant method for unconstrained minimization

open access: yes, 1972
A gradient-secant algorithm for unconstrained optimization problems is presented. The algorithm uses Armijo gradient method iterations until it reaches a region where the Newton method is more efficient, and then switches over to a secant form of ...
Polak, E.
core  

Deflection analysis of underpinned secant pile wall [PDF]

open access: yes, 2013
Underpinned retaining wall commonly been used for the construction of underground basement or any other open cut excavation projects, especially in urban areas.
Mardi, Marini
core  

Paternal Circadian Disruption Impairs Offspring Cognition via Sperm microRNAs

open access: yesAdvanced Science, EarlyView.
Paternal circadian disruption remodels the sperm small RNA payload, elevating miR‐92a‐3p/miR‐25‐3p levels and perturbing early embryonic gene regulatory programs. Microinjection experiments and single‐embryo transcriptomics reveal sex‐specific developmental vulnerabilities, ultimately impairing offspring hippocampal synaptic plasticity and cognition ...
Kexin Zou   +22 more
wiley   +1 more source

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