Results 91 to 100 of about 211,510 (293)

The influence of the material of the ultrasonic vibration concentrator on the amount of the amplitude of mechanical vibrations

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки
Background. The purpose of this article is to study the effect of ultrasonic vibrations on the surface of a liquid for subsequent use in electric arc surfacing processes. Materials and methods.
A.A. Kazinskiy, D.V. Babakaev
doaj   +1 more source

Metallurgy Division Annual Progress Report for Period Ending September 1, 1959 [PDF]

open access: yes, 1959
Report documenting ongoing research and development undertaken by the Metallurgy Division of the Oak Ridge National ...
Oak Ridge National Laboratory. Metallurgy Division.
core  

On‐Skin Wireless Vibratory Interfaces by Stretchable Multilayer Circuits

open access: yesAdvanced Materials Interfaces, EarlyView.
A battery‐free, stretchable wireless vibratory interface is developed through printable liquid‐metal‐based multilayer circuits. The soft device integrates wireless power reception, signal modulation, and vibrotactile actuation within a compliant platform.
Jiawei Liu   +10 more
wiley   +1 more source

Multilayer Biobased Poly(ethylene furanoate)/Graphene Oxide Nanofibrous Membranes With Directional Water Transport for Efficient Microplastics Filtration

open access: yesAdvanced Materials Technologies, EarlyView.
A self‐assembled multilayer biobased PEF/GO nanofibrous membrane was developed by electrospinning for efficient PLA microplastics (MPs) filtration. The membrane combines superhydrophilicity, directional water transport, mechanical robustness, and a synergistic size‐exclusion interception and electrostatic repulsion MPs separation mechanism, enabling ...
Juraij Kandiyil   +6 more
wiley   +1 more source

Micro parts manufacturing by powder metallurgy (Micro PM)

open access: yes, 2022
6 S.Precision parts in powder metallurgy are manufactured by press and sinter operations followed by sizing. The advantage of net shape production is combined with dimensional precision and low surface roughness. However this technique is limited to very
Jurisch, M.   +5 more
core   +1 more source

Application of artificial intelligence methods for prediction of steel mechanical properties [PDF]

open access: yesMetalurgija, 2008
The target of the contribution is to outline possibilities of applying artificial neural networks for the prediction of mechanical steel properties after heat treatment and to judge their perspective use in this field.
Z. Jančíková   +2 more
doaj  

Two‐Step Thermal Upcycling of Flexible Printed Circuit Board Waste Into Metallic Copper Nanoparticles: Synthesis and Characterization

open access: yesAdvanced Materials Technologies, EarlyView.
A two‐step thermal upcycling process converts flexible printed circuit board waste into high‐purity copper nanoparticles using polymer degradation and arc discharge. The synthesized nanoparticles exhibit controlled morphology and high metal purity.
Bikesh S. Ghinangju   +2 more
wiley   +1 more source

LATE PRE-HISPANIC AND EARLY COLONIAL SILVER PRODUCTION IN THE QUEBRADA DE TARAPACÁ, NORTHERN CHILE LA PRODUCCIÓN DE PLATA EN LOS PERÍODOS PREHISPÁNICO TARDÍO Y COLONIAL TEMPRANO EN LA QUEBRADA DE TARAPACÁ, NORTE DE CHILE

open access: yesBoletín del Museo Chileno de Arte Precolombino, 2010
Drawing on a survey of the Quebrada de Tarapacá in northern Chile and excavations at the Inka and Colonial administrative site of Tarapacá Viejo, we present archaeological evidence of small-scale purification of silver using lead.
Colleen M Zori, Peter Tropper
doaj  

Wavy‐Interlocked Stretchable Triboelectric Nanogenerators Enhanced by Liquid Metal Microflowers for Self‐Powered Wearable Motion Monitoring

open access: yesAdvanced Science, EarlyView.
Schematic showing a stretchable triboelectric nanogenerator based on interlocked wavy architectures that uses EGaIn microflower‐embedded PVDF‐TrFE and Nylon‐6 nanofiber membranes. The multi‐petaled, electron‐rich EGaIn microflowers enhance interfacial polarization and capacitance, while the interlocked wavy architecture enlarges the effective contact ...
Qianqian Xu   +12 more
wiley   +1 more source

PROCESAMIENTO DE METALES DURANTE EL HORIZONTE MEDIO EN EL ALTIPLANO SURANDINO (ESCARAMAYU, PULACAYO, POTOSÍ, BOLIVIA) METAL PROCESSING DURING THE MIDDLE HORIZON IN THE SOUTH ANDEAN ALTIPLANO (ESCARAMAYU, PULACAYO, POTOSÍ, BOLIVIA

open access: yesBoletín del Museo Chileno de Arte Precolombino, 2010
En este trabajo se presentan y se analizan los resultados alcanzados en el sector metalúrgico del sitio Pulac 050 (Escaramayu, Pulacayo, Bolivia). Los estudios desarrollados en el sector han puesto en evidencia un complejo de cuatro hornos metalúrgicos ...
Heather Lechtman   +3 more
doaj  

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