Results 211 to 220 of about 233,397 (304)

Jet Kerosine Trading and the Oil Future Markets

Energy Exploration & Exploitation, 1990
openaire   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

The Influence of Operating Pressure Oscillations on the Machined Surface Topography in Abrasive Water Jet Machining. [PDF]

Materials (Basel)
Veljković DŽ, Baralić J, Janković P, Dučić N, Savković B, Jovičić A.   +5 more
europepmc   +1 more source

An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley   +1 more source

Advancements in Catalyst Design for Biomass-Derived Bio-Oil Upgrading to Sustainable Biojet Fuel: A Comprehensive Review. [PDF]

ChemistryOpen
Jideani T, Seroka NS, Khotseng L.
europepmc   +1 more source

Controlling banana bunchy top disease in Benin: Crop protection strategies with socio‐economic perspectives

PLANTS, PEOPLE, PLANET, EarlyView.
Banana and plantain are vital for food security and income in West Africa, yet banana bunchy top virus (BBTV) threatens production. This study combined remote sensing, field surveys, modelling and socio‐economic analysis to assess BBTV spread and control strategies in Benin.
Renata Retkute, Martine Zandjanakou‐Tachin, Bonaventure Aman Omondi, Ulrich Roland Agoi, Yaovi Marc Vodounou, Hermine Akofodji, Evrard Akpla, Laurence Dossou, Emiline Médénou, Alban Etchiha, Alphonse Attadéou, P. Lava Kumar, John E. Thomas, Christopher A. Gilligan   +13 more
wiley   +1 more source

Experimental Study on the Feasibility of "Radial Jet Drilling + CO₂ Huff-n-Puff" for the Development of Shale Oil. [PDF]

ACS Omega
Li J, Li R, Wang Z, Wang J, Xinrui L, Xia D.   +5 more
europepmc   +1 more source

Hydroxyl‐Terminated Polybutadiene‐Based Molding Powders as an Alternative Route for Manufacturing Pressed Polymer‐Bonded Explosives

Propellants, Explosives, Pyrotechnics, EarlyView.
This study presents an alternative method to manufacture polymer‐bonded explosives by partially curing an HTPB‐based molding powder prior to compaction. The study shows that the length of partial cure time before compaction directly influenced the geometric fidelity, homogeneity, compressive strength, density, and internal microstructure.
Ismar L. Chew, Cole Stephens, Ellen Ma, Julio Hernandez, Monique S. McClain   +4 more
wiley   +1 more source

Seasonality and Declining Intensity of Methane Emissions from the Permian and Nearby US Oil and Gas Basins. [PDF]

Environ Sci Technol
Varon DJ, Jacob DJ, Estrada LA, Balasus N, East JD, Pendergrass DC, Chen Z, Sulprizio M, Omara M, Gautam R, Barkley ZR, Saldaña FJC, Reidy EK, Kamdar H, Sherwin ED, Biraud SC, Jervis D, Pandey S, Worden JR, Bowman KW, Maasakkers JD, Kleinberg RL.   +21 more
europepmc   +1 more source