Results 71 to 80 of about 71,403 (204)

An Atom Faucet [PDF]

open access: yes, 2001
We have constructed and modeled a simple and efficient source of slow atoms. From a background vapour loaded magneto-optical trap, a thin laser beam extracts a continuous jet of cold rubidium atoms.
Chevy, F.   +3 more
core   +4 more sources

Flash Photodynamic Therapy – How the Saturation of Photosensitizer Absorption Enables Selective and Deeper Tumor Treatments

open access: yesAdvanced Science, Volume 13, Issue 1, 5 January 2026.
FLASH‐PDT uses strongly‐absorbing photosensitizers and pulsed lasers to saturate the photosensitizer absorption at ≈1‐cm tissue depths. This allows for the generation of [ROS] above the necrosis threshold level for tumors, while maintaining [ROS] in peritumoral tissues below that threshold, even when the tumor‐to‐peritumoral tissue ratio is as low as 2.
Luis G. Arnaut   +3 more
wiley   +1 more source

High-throughput photosynthetic phenotyping using hyperspectral reflectance in paddy rice (Oryza sativa L.) under field conditions

open access: yesSmart Agricultural Technology
Accurate and high-throughput assessment of photosynthetic phenotyping traits is a major bottleneck in advancing crop breeding and precision agriculture.
Xinfeng Yao   +5 more
doaj   +1 more source

Accelerating Pinned Insect Specimen Digitization: A Deep Learning Pipeline for Future Collaborative Robots

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 1, January 2026.
The study presents a prototype novel workflow that utilizes artificial intelligence for the digitization of natural history collections, which would fit within a robotic‐integrated system. The work focuses on a collaborative‐robot (cobot) inspired workflow to digitize one of the largest collections housed at the Natural History Museum UK: pinned ...
Naifeng Zhang   +4 more
wiley   +1 more source

Impact of recycled gravel obtained from low or medium concrete grade on concrete properties

open access: yesHBRC Journal, 2018
This paper investigates the effect of recycled gravel obtained from low (Gl) or medium (Gm) concrete grade on fresh property of concrete (slump), mechanical properties (compressive-splitting tensile strength) and mass transport properties (ISAT ...
Yasser Abdelghany Fawzy
doaj   +1 more source

Stanley depth of monomial ideals with small number of generators

open access: yes, 2009
For a monomial ideal $I\subset S=K[x_1,...,x_n]$, we show that $\sdepth(S/I)\geq n-g(I)$, where $g(I)$ is the number of the minimal monomial generators of $I$. If $I=vI'$, where $v\in S$ is a monomial, then we see that $\sdepth(S/I)=\sdepth(S/I')$.
Cimpoeas, Mircea
core   +1 more source

Single Atom Imaging with an sCMOS camera [PDF]

open access: yes, 2017
Single atom imaging requires discrimination of weak photon count events above background and has typically been performed using either EMCCD cameras, photomultiplier tubes or single photon counting modules.
C. J. Picken   +3 more
core   +2 more sources

Calculation Method for Magnetic Saturation Current of Shunt Reactors Under Oscillation in Renewable Energy Power Systems

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
The paper proposes a piecewise analytical method for calculating the winding current and the neutral reactor current under oscillatory conditions in renewable energy power systems. The method is based on the operational state of the core magnetic circuit, where the nonlinear magnetisation curve is approximated by piecewise linear segments with the ...
Botong Li   +8 more
wiley   +1 more source

Surface critical behaviour of the Interacting Self-Avoiding Trail on the square lattice

open access: yes, 2010
The surface critical behaviour of the interacting self-avoiding trail is examined using transfer matrix methods coupled with finite-size scaling. Particular attention is paid to the critical exponents at the ordinary and special points along the collapse
Blöte H W J   +14 more
core   +3 more sources

A Review on Passively Mode‐Locked Ultrafast Lasers: Mechanisms, Soliton Behavior, Stability, Emerging Materials, and Applications

open access: yesInternational Journal of Optics, Volume 2026, Issue 1, 2026.
This work presents an in‐depth and unified exposition of the physics, mechanisms, and emerging trends governing passively mode‐locked ultrafast lasers. It systematically reviews the fundamental principles of mode locking, emphasizing the role of both real saturable absorbers—such as SESAMs, quantum dots, and low‐dimensional 2D materials—and artificial ...
Rakayet Rafi   +3 more
wiley   +1 more source

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