Results 121 to 130 of about 17,683 (311)

Effect of oceanic turbulence on the statistical features of electromagnetic optical beam

Results in Physics
This work deals with the intricate problem of electromagnetic optical beam propagation through oceanic turbulence. Using the extended Huygens–Fresnel principle, numerically, the behavior of the degree of cross-polarization (DOCP), electromagnetic degree ...
Hemant Kumar Singh, Vikram Singh Bhandari, Bhaskar Kanseri   +2 more
doaj   +1 more source

Effects of Optical Turbulence and Density Gradients on Particle Image Velocimetry. [PDF]

Sci Rep, 2020
Matt S, Nootz G, Hellman S, Hou W.
europepmc   +1 more source

On‐deck pH measurement with integrated feedback control on a micro‐scale platform for monoclonal antibody low pH viral inactivation

Biotechnology Progress, EarlyView.
Integrating an automated, on‐deck pH measurement method with feedback control enables precise, real‐time pH adjustment during low pH viral inactivation on a micro‐scale platform. Abstract The increasing demand for efficient monoclonal antibody manufacturing has accelerated the adoption of high throughput process development (HTPD) platforms, which ...
Paras Sharma, Nikolas von den Eichen, Sabine Schweisgut, Lars Robbel, Michael Schmitt, Daniel G. Bracewell   +5 more
wiley   +1 more source

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Experimental Characterisation and Modelling of Atmospheric Fog and Turbulence in FSO

, 2013
Free space optical (FSO) communication uses visible or infrared (IR) wavelengths to broadcast high-speed data wirelessly through the atmospheric channel.
Ijaz, Muhammad
core  

Methodological Approach for Particle Transport: Analyzing Influential Factors and Comparing Simulation Software

Chemie Ingenieur Technik, EarlyView.
This study determines the dust filtration behavior of venting tubes in automotive headlights. Numerical simulations using Meshfree and STAR‐CCM+ and suitable experiments were conducted to analyze the airflow field, the particle transport, and the filtration efficiency.
Cornelia Müssig, Alexander Kabat vel Job, Stephan Knorr, Henning Meyer, Daniel Wiest   +4 more
wiley   +1 more source

Atmospheric Turbulence Phase Reconstruction via Deep Learning Wavefront Sensing

Sensors
The fast and accurate reconstruction of the turbulence phase is crucial for compensating atmospheric disturbances in free-space coherent optical communication. Traditional methods suffer from slow convergence and inadequate phase reconstruction accuracy.
Yutao Liu, Mingwei Zheng, Xingqi Wang
doaj   +1 more source

Application of Ultrasonic Sensors for Determining the Height of Dynamic Two‐Phase Layers in Tray Columns

Chemie Ingenieur Technik, EarlyView.
Ultrasonic sensors are evaluated for their applicability in dynamic gas–liquid systems. By comparing sensor data with two independent optical reference methods, their robustness and reliability are demonstrated under varying flow conditions and tray geometries in column systems.
Niklas Breuer, Marcus Grünewald, Julia Riese   +2 more
wiley   +1 more source

Impact of Beacon Feedback on Stabilizing RL-Based Power Optimization in SLM-Controlled FSO Uplinks Under Turbulence

Photonics
Atmospheric turbulence severely limits the stability and reliability of free-space optical (FSO) uplinks by inducing wavefront distortions and random intensity fluctuations. This study investigates the use of reinforcement learning (RL) with beacon-based
Erfan Seifi, Peter LoPresti
doaj   +1 more source

Performance of the coherent optical binary polarization-shift-keying heterodyne system in free space optical communications using a lognormal atmospheric turbulence model MIC-CPE 2010

, 2010
In this paper, simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for free space optical (FSO) communication links with a log-normal ...
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Tang, Xuan, Rajbhandari, Sujan, Lee, Chung Ghiu   +4 more
core