Results 81 to 90 of about 72,611 (243)

Mobile Work: Handcart and Bicycle Workers Across the Urban Economy of Greater Accra Region

open access: yesArea, EarlyView.
Short Abstract This article explores the role of handcart and bicycle workers—mobile workers—in the urban economy of Accra and Tema, Ghana. Drawing on qualitative fieldwork, it shows how their practices of food vending, e‐waste collection and mobile trade exemplify a form of relational infrastructure that sustains urban life through improvisation ...
Kauê Lopes dos Santos   +1 more
wiley   +1 more source

Influence of the Depth of Friction-welded Dowels on the Strength of Rotary Welded Joints

open access: yesBioResources
One of the important factors in rotary welding is the depth of welding of the dowel as well as the direction of welding of the dowel. In the studied interval (welding depth of 15 to 30 mm), the pull-out force increased when welding the dowel parallel to ...
Ivica Župčić   +2 more
doaj   +2 more sources

The effect of vibratory stress on the welding microstructure and residual stress distribution [PDF]

open access: yes, 2001
Previous studies have suggested that weld microstructure may be modified by the presence of static stresses. In this investigation, vibratory stress was applied to mild steel specimens while they were being welded to observe its effect on the residual ...
Munsi, A.S.M.Y.   +2 more
core  

Occupational Contact Urticaria, Protein Contact Dermatitis and Concomitant Airway Diseases in the Finnish Register of Occupational Diseases in 2005–2020: Main Causes and Occupations at Risk

open access: yesContact Dermatitis, EarlyView.
This Finnish registry study shows that concomitant occupational asthma and rhinitis are common in patients with occupational contact urticaria or protein contact dermatitis, often sharing the same exposure. When evaluating occupational immediate allergy, both skin and airway symptoms should be considered.
Ville Ojanen   +4 more
wiley   +1 more source

Tool and process for miniature explosive joining of tubes [PDF]

open access: yes, 1987
A tool and process to be used in the explosive joining of tubes is disclosed. The tool consists of an initiator, a tool form, and a ribbon explosive.
Bailey, James W., Bement, Laurence J.
core   +1 more source

From plant to fabric: Environmental opportunities associated with annatto dye for sustainable development in the textile industry

open access: yesColoration Technology, EarlyView.
Abstract Natural dyes are compounds that occur naturally in several organisms and are classified based on chemical structure and application method. The literature cites several natural dyes used in industrial transformation processes. Annatto dye is used in the food industry, and its biological pigment is extracted from the annatto seed. However, this
Marcel Jefferson Gonçalves   +5 more
wiley   +1 more source

Experimental investigation on the weldability of wood-plastic composites by friction stir welding using a self-reacting double-stationary shoulder tool

open access: yesResults in Engineering
In this study, the weldability of wood–plastic composites (comprising 50 % wood flour and 50 % low-density polyethylene) was examined using an innovative self-reacting friction stir welding tool featuring a double-stationary shoulder design.
Mohamad Elmiligy   +2 more
doaj   +1 more source

Outdoor work as risk factor for facial melanoma: UV exposure, risk awareness, and occupational relevance

open access: yesJDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background This study explored UV exposure and prevention behaviors among melanoma patients, focusing on occupational UV exposure, melanoma characteristics, risk awareness, and protective behaviors. Patients and Methods This cross‐sectional study analyzed demographics, melanoma characteristics, UV exposure, awareness, and preventive measures ...
Susanne Dugas‐Breit   +3 more
wiley   +1 more source

Deep drawing simulations of Tailored Blanks and experimental verification [PDF]

open access: yes, 1998
Tailored Blanks are increasingly used in the automotive industry.\ud A combination of different materials, thickness, and coatings can be welded\ud together to form a blank for stamping car body panels.
Berg, A. van den   +2 more
core   +2 more sources

Needle tenoscopy of the digital flexor tendon sheath in four horses

open access: yesEquine Veterinary Education, EarlyView.
Summary Background Tenoscopy, performed under general anaesthesia (GA), remains the gold standard diagnostic modality for assessment of the digital flexor tendon sheath (DFTS). A cadaver study described needle tenoscopy of the DFTS in a standing horse model, but the procedure has not been reported in clinical cases.
L. J. Breen   +4 more
wiley   +1 more source

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