Results 71 to 80 of about 41,927 (245)

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

open access: yesAdvanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak   +7 more
wiley   +1 more source

Coupling noble gas and alkane gas isotopes to constrain normally pressured shale gas expulsion in SE Sichuan Basin, China

open access: yesFrontiers in Earth Science
The molecular and isotopic compositions of shale gases exhibit substantial differences under different storage conditions. Gas geochemistry is widely used when evaluating gas accumulation and expulsion in petroleum systems.
Jiaxin Li   +5 more
doaj   +1 more source

Icephobic Gradient Polymer Coatings Coupled with Electromechanical De‐icing Systems: A Promising Ice Repellent Hybrid System

open access: yesAdvanced Engineering Materials, EarlyView.
A hybrid system for de‐icing made of gradient polymer coatings, deposited on aluminum coupled with an electromechanical system, is demonstrated as an effective and durable strategy for reducing drastically ice adhesion. The system is capable of detaching ice blocks over the coating in less than 1 s, regardless of the ice type and covered area ...
Gabriel Hernández Rodríguez   +8 more
wiley   +1 more source

La migración por la Gran Guerra 1914-1918 y su relación con Latinoamérica

open access: yesGrafía, 2014
Europe, Asia and Africa were until the Great War, 1914-1918, regions from where immigrants were come to American lands, being among them the Latin-Americans, and in particular, those of the south of the continent the most receptive. The article is about
Carlos Guillermo Tapias Cote
doaj   +1 more source

Intermetallic Compound Layer Morphology and Distribution in Friction‐Welded Steel–Aluminum Components

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, how friction‐welding parameters (rotational speed, etc.) affect the morphology, distribution, and local thickness of the intermetallic compound layer (IMC‐layer) in friction‐welded steel‐aluminum hybrid components is investigated. In the results, it is shown that lower speeds (700 rpm) lead to a more uniform, thinner IMC‐layer (<0.5 μm),
Christoph Kahra   +6 more
wiley   +1 more source

Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the bond quality of co‐extruded aluminum–titanium hybrid profiles, focusing on the lateral angular co‐extrusion (LACE) process. It examines how heat treatments (HT) affect intermetallic phase formation, bond strength, and material properties.
Norman Mohnfeld   +9 more
wiley   +1 more source

An Innovative Surgical Technique: Anchoring Levonorgestrel-Releasing Intrauterine System Using a Specialized Fixation Needle

open access: yesClinical and Experimental Obstetrics & Gynecology
Background: Numerous surgical techniques have been proposed to enhance the stability of intrauterine system (IUS) and reduce the incidence of displacement and expulsion, however, challenges remain.
Yufei Liang   +3 more
doaj   +1 more source

The Reform of Law-Enforcement Agencies in Kyiv in Terms of Growth and National Revolutionary Movement in the Post-Reform Period of Second Half 19th— Early 20th Ct. [PDF]

open access: yesStorìnki Istorìï, 2016
The article analysis the reorganization of law-enforcement agencies in Kyiv in the period of reforming of the entire state apparatus of the Russian Empire in the late 19th and early 20th ct.
O. Biliavska
doaj  

The Implementation of Non-Refoulement Principle to the Asylum Seekers and Refugees in Indonesia

open access: yesSriwijaya Law Review, 2017
The expulsion of refugees, either by the state party or by the non-state party  to the 1951 Refugee Convention or countries  has  protracted the refugees’ suffering.
M. Alvi Syahrin
doaj   +1 more source

Analysis of Temperature and Stress Distribution on the Bond Properties of Hybrid Tailored Formed Components

open access: yesAdvanced Engineering Materials, EarlyView.
Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek   +7 more
wiley   +1 more source

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