Results 91 to 100 of about 1,453 (244)

Dynamic performance of a free piston expander-linear generator for small-scale organic rankine cycle under variable operating conditions: an experimental and numerical investigation

Frontiers in Energy Research
To tackle the critical challenge of adapting free piston expander-linear generators to the dynamic operating conditions of vehicle engine waste heat recovery Organic Rankine Cycle systems, this study introduces a comprehensive Matlab/Simulink simulation ...
Dong Yan, Lianfeng Lai, Zhihui Deng, Jian Zhang, Yonghong Xu   +4 more
doaj   +1 more source

Interplay Between Dispersion, Nucleation, and Crystallization in HDPE/Graphene Nanocomposites Processed Under Thermokinetic Conditions

Polymer Engineering &Science, EarlyView.
Thermokinetic processing controls graphene fragmentation and dispersion in HDPE, promoting heterogeneous nucleation and multistep crystallization. The balance between nucleation enhancement and chain mobility restriction governs the final crystalline structure and material performance.
Lucas J. S. Nascimento, Tainá dos S. Guatimosim, Fernanda T. G. Dias, Sandro C. Amico, Otávio Bianchi   +4 more
wiley   +1 more source

An Investigation in Poly (Lactic Acid)‐Cellulose Acetate Composites Used for the Controlled Release of Potassium Fertilizers

Polymer Engineering &Science, EarlyView.
Schematic graph of controlled release potassium for plant growth. ABSTRACT Biodegradable polymer–based controlled‐release fertilizers (CRFs) offer an environmentally friendly approach to enhancing nutrient use efficiency while minimizing ecological impacts.
Kaleum Meaney, Ke Gong, Yinshi Lu, Yin Zhu, Lena Madden, Declan Devine, Michael Gaffney, Crevan O'Donnell, Mario Culebras, Maurice N. Collins, Yuanyuan Chen   +10 more
wiley   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Robust framework for simultaneous optimization of performance and stability in active free-piston stirling engines

Energy Conversion and Management: X
Free-piston Stirling Engines (FPSEs) are highly promising for solar-to-electric conversion; however, passive designs lack adaptability and robustness.
Hadi Sazgar, Shahryar Zare
doaj   +1 more source

Aggregation‐induced enhanced emission for quantification of recycled content in automotive plastics

Polymer International, EarlyView.
Quantifying recycled content in four automotive plastics using aggregation‐induced enhanced emission showed that performance was highly dependent on both polymer and additive chemistries. Abstract The use of plastics in the automotive industry is increasing due to their versatility, light weight and affordability.
Saleh S Soomro, Chaehwan Hong, Michael P Shaver   +2 more
wiley   +1 more source

Design and Development of a Modular Ballistic Pendulum for High‐Impulse Measurement in Contact and Near‐Field Explosive Loading

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measuring impulse from explosive charges in contact and near‐field configurations presents practical challenges due to wide variation in impulse magnitude. Ballistic pendula are widely used for impulse measurement, but many existing designs are limited to narrow operating envelopes or are poorly suited to repeated contact testing and tamped ...
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

Host plant‐specific volatiles of Beauveria bassiana‐colonized plants initiate trophic plant–aphid–predator cascades

Pest Management Science, EarlyView.
Endophytic colonization of melon plants by B. bassiana modifies the crop volatile profiles in a genotype‐dependent manner. A predator choice is biased toward endophytically colonized plants infested with aphids revealing a guardian within effect of the fungus of great potential in integrated pest management.
María Cuenca‐Medina, Raquel Rodríguez‐Solana, José Manuel Moreno‐Rojas, Rafael Alcalá‐Herrera, Enrique Quesada‐Moraga, Natalia González‐Mas   +5 more
wiley   +1 more source

Simulation study on the operating characteristics of FPEG based on variable load control

Advances in Mechanical Engineering
To stabilize the operation of free-piston engine generators (FPEGs), a variable load control strategy is proposed to regulate piston motion. By dynamically adjusting the equivalent load to control the system’s total resistance, the strategy alters the ...
Yubo Meng, Ping Xu, Zuquan Jiang, Fengxiang Shao, Long Li, Jinliang Zhu   +5 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source