Results 91 to 100 of about 15,446 (261)

Comparative Study of Wheel Profile Influence on Multi-Point Wheel–Turnout Contact Using Kalker’s Theory

Lubricants
Turnouts represent a critical element of railway infrastructure, and are subjected to some of the highest mechanical stresses due to the discontinuity of the track geometry. Failures in this area generate high maintenance costs and may compromise traffic
Mihaela Cristina Tudorache, Razvan Andrei Oprea, Marius Adrian Spiroiu, Camil Ion Craciun, Sorin Arsene   +4 more
doaj   +1 more source

Return and Volatility Spillovers Among Major Cotton Markets

Agribusiness, EarlyView.
ABSTRACT This study explores return and volatility transmission among major cotton markets. Several events have disrupted cotton supply and demand in recent years, leading to heightened price volatility and significant shifts in market interconnections.
Susmitha Kalli, Berna Karali, Yangxuan Liu, Munisamy Gopinath   +3 more
wiley   +1 more source

When the River Runs Low: Heterogeneous Impacts of Transportation Disruptions on Local Grain Basis

Agribusiness, EarlyView.
ABSTRACT A substantial share of U.S. soybean and corn exports from the Midwest moves by barge along the Mississippi River system to export terminals in the Louisiana Gulf. Transportation costs between Midwestern grain elevators and export terminals create a wedge between prices at these locations, and shocks to these costs are partially passed on to ...
Yuan Zhang, Andrew E. Anderson, Nicholas J. Pates, Eunchun Park   +3 more
wiley   +1 more source

FastCat: Autonomous Discovery of Multielement Layered Double Hydroxide Alloy Catalysts for Alkaline Oxygen Evolution Reaction

Advanced Intelligent Discovery, EarlyView.
A machine learning‐guided self‐driving laboratory screened over 500 nickel‐based layered double‐hydroxide catalysts for alkaline oxygen evolution. Out of the eight metals, the robot uncovered a quaternary Ni–Fe–Cr–Co catalysts requiring only 231 mV overpotential to reach 20 mA cm−2.
Nis Fisker‐Bødker, Enzo Raffaele Moretti, Jin Hyun Chang, Tejs Vegge   +3 more
wiley   +1 more source

Robot‐Assisted Measurement of the Critical Micelle Concentration

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The study introduces (SIMO) smart integrator for manual operations, a robotic platform for precise, repeatable determination of (CMC) critical micelle concentration in surfactants. SIMO reduces standard deviation by 80% compared to manual methods. Surfactant, dye, and diluent selection, robotic protocols, and data handling are detailed.
Vincenzo Scamarcio, Gadi Slor, Josie Hughes, Francesco Stellacci   +3 more
wiley   +1 more source

Modeling of the track and rolling stock interaction

Science and Transport Progress, 2013
Purpose. Interaction of system’s elements of "carriage–track" modelling requires consideration of various criteria, it also requires analysis of many uncertainty and randomness factors’ influence on the basic parameters to ensure optimal or rational parameters of the system.
openaire   +4 more sources

Extending Battery Usage Time of a Heavy‐Duty Mecanum‐Wheeled Autonomous Electric Vehicle Used in Iron–Steel Industry by Considering Wheel Slippage

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
It is a fact that slippage causes tracking errors in both longitudinal and lateral directions which results to have less travel distance in tracking a reference trajectory. Less travel distance means having energy loss of the battery and carrying loads less than planned.
Gokhan Bayar, Goktug Hambarci, Ali Sezai Demirel   +2 more
wiley   +1 more source

The role of venture‐financed startups in innovation for US agriculture

American Journal of Agricultural Economics, EarlyView.
Abstract To evaluate the role played by startup companies in the innovation ecosystem of US agriculture, we compile a unique dataset of 6024 new entrants founded 1987–2019 that details their financing lifecycles, annual economic performance, and patenting activities.
Gregory D. Graff, Charles A. W. de Grazia, Nicholas E. Rada   +2 more
wiley   +1 more source

Exploring the Burden on Patients Living With and Receiving Treatment for Immune Thrombocytopenia (ITP): Patient and Physician Perceptions From the ITP World Impact Survey (I‐WISh) 2.0

American Journal of Hematology, EarlyView.
ABSTRACT Limited data exist on how patients and physicians perceive immune thrombocytopenia (ITP) symptoms and treatment‐related burden. I‐WISh (ITP World Impact Survey) 2.0 surveyed 1018 patients and 431 physicians in 15 countries to characterize the impact of ITP and its treatments on patients.
Nichola Cooper, James Bussel, Waleed Ghanima, Drew Provan, Yoshiaki Tomiyama, Ming Hou, Donald M. Arnold, Cristina Santoro, Francesco Zaja, Barbara Lovrencic, Mervyn Morgan, Michal Winograd, Jennifer DiRaimo, Danielle Boyle, Olivera Rajkovic‐Hooley, Meritxell Vendranas, Susan Frade, Caroline Kruse   +17 more
wiley   +1 more source

Active Radial Controller for Rail Transit Vehicle Bogies

Chengshi guidao jiaotong yanjiu
[Objective] Conventional positioning stiffness of rail transit vehicle bogies results in significant lateral forces between wheels and rails, leading to substantial wear and reduced operational efficiency when navigating curves with small to medium radii.
Bo HU, Fei MA, Changjun GAO, Yuhang ZHOU, Zhongxiang WANG   +4 more
doaj   +1 more source