Results 31 to 40 of about 45,014 (259)

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Producción de carne en los zacates guinea y buffel, con dos niveles de fertilización, durante un año de pastoreo en Tizimin, Yuc., Clima AW

Revista Mexicana de Ciencias Pecuarias, 1976
En el Centro Experimental Pecuario Tizimin Yucatán, México, se investigó la respuesta animal a la fertilización con nitrógeno y fósforo en los zacates Guinea (Panicum rnaximum) y Buffel (Cenchrus ciliaris), durante 364 días de pastoreo rotacional.
Ignacio Molina Saldívar, Ricardo Garza Treviño, Manuel Torres Hernández   +2 more
doaj  

Mechanically Robust and Depolymerizable Polyesters With Near‐Complete Monomer Recovery for Circular Additive Manufacturing

Advanced Materials, EarlyView.
A sustainable δ‐lactone‐based polymer platform enables multimodal additive manufacturing through DLP, DIW, and FFF, combining tunable crystallinity, photocurable networks, mechanical robustness, and functional response. The printed materials can be mechanically reprocessed and chemically depolymerized into recoverable monomers, demonstrating a closed ...
Farzad Gholami, Rampi Ramprasad, H. Jerry Qi   +2 more
wiley   +1 more source

Substitución de pasta de soya con pasta de semilla de calabaza, en raciones para cerdos de abasto

Revista Mexicana de Ciencias Pecuarias, 1976
Se efectuaron dos experimentos para determinar el efecto de substituir pasta de soya con pasta de semilla de calabaza (PSC) para cerdos de abasto. En el primero se emplearon 18 cerdos Duroc de 59.4 kg y los niveles de substitución fueron 0, 50 y 100%; la
Bartolomé Manjarréz, Fernando Enríquez, Ernesto Avila G., Armando S. Shimada   +3 more
doaj  

MECHANICAL CALCULATION OF FLEXIBLE WIRES WHEN A CONCENTRATED LOAD IS BEING REPLACED WITH A DISTRIBUTED ONE TAKING INTO ACCOUNT THE STRUCTURAL ELEMENTS Y.V. BLADYKO1)

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2018
In the mechanical calculation of the flexible wires of substations and overhead lines, sags and tension are determined in various climatic conditions. Concentrated loads from spacers, barrier balls, stubs, taps to electrical apparatus and other elements ...
Y. V. Bladyko
doaj   +1 more source

Two-Lane Lattice Hydrodynamic Modeling at Sag Sections With the Empirical Lane-Changing Rate

IEEE Access, 2023
Sag sections are freeway sections where the gradient varies significantly from top to bottom. Due to their special geometric characteristics, sag sections are often bottlenecks in motorway networks.
Bo Meng, Jing Yuan, Shubin Li
doaj   +1 more source

Coating‐Free Nanoscratching for Liquid‐Crystal Alignment on PCB‐Compatible Millimeter‐Wave Reflective Unit Cells

Advanced Materials Technologies, EarlyView.
Direct nanoscratching with a 500 nm diamond lapping film creates groove‐guided liquid‐crystal alignment interfaces on PCB‐compatible Cu‐patterned RF substrates within minutes, eliminating polymer coating and high‐temperature baking. The coating‐free process enables optical/molecular alignment validation and voltage‐programmable 28 GHz reflection‐phase ...
Junseok Ma, Ga‐Yeong Park, Geunjung Lee, Hyo‐Won Lee, Jong‐Won Yu, Dong Ki Yoon   +5 more
wiley   +1 more source

Passive Directional Water Transport on Superhydrophobic Gradient Textures Fabricated by Direct Laser Interference Patterning

Advanced Materials Technologies, EarlyView.
Microstructures fabricated by two‐beam DLIP combining spatial‐period and roughness gradients are fabricated to enhance directional transport of water droplets. The coupled gradients increase transport distance by 160% and strongly suppress motion against the gradient, demonstrating an effective strategy for controlled droplet manipulation.
Tianhao Wu, Marcos Soldera, Fabian Ränke, Andrés Fabián Lasagni   +3 more
wiley   +1 more source

Introducing PNEUMA: A Hybrid Soft Pneumatic Fabric Bidirectional Actuation Module for Wearable Robotics

Advanced Robotics Research, EarlyView.
This study presents a soft pneumatic fabric bidirectional actuation module (PNEUMA) capable of generating high torque in both bending directions within a single integrated architecture. PNEUMA achieves up to 50 Nm with reduced inflation volume and a lightweight design.
Odysseas Simatos, Nikolaos Charalampous, Panagiotis Polygerinos   +2 more
wiley   +1 more source

Sodium Ascorbate‐Accelerated Gelling Hydrogels With Rapid Self‐Mineralized Capacity for Chronic Wounds

Advanced Science, EarlyView.
An immunoregulatory hydrogel based on sodium ascorbate (SA)‐accelerated gelation and in situ self‐mineralization is prepared here. Such a hydrogel is constructed by mixing benzaldehyde‐ and cyanoacetate‐functionalized dextran with silver nitrate (AgNO3) and SA, enabling the ultrafast solidification and in situ self‐mineralization of silver ...
Xiaoya Ding, Wei Yang, Wenzhao Li, Guifang Xu, Yuanjin Zhao   +4 more
wiley   +1 more source