Results 11 to 20 of about 101,229 (247)

Thermal Loading of the Railway Wheel during Downhill Breaking

open access: yesCommunications, 2001
The paper deals with the particular factors of railway wheels heat loading while braking with a brake block and consequences of that stressing. There are discussed some phenomena of thermic interaction between the bracked wheel and the brake block.
Juraj Gerlici, Peter Vesely, Tomas Lack
doaj   +1 more source

An Analysis of a Mobile Vehicle with Dual Run

open access: yesCommunications, 2001
Plane motion of a model vehicle with additional equipment is theoretically solved in this paper. The paper further deals with some questions concerning spatial motion of a dual-run wheel and consequences of such motion. The used method allows changing an
Vladimir Hlavna   +2 more
doaj   +1 more source

The Effect of Carrying School Bag on Electromyographic Activity of Muscles and Biomechanical Parameters of Walking in Iranian Students: a Systematic Review Study [PDF]

open access: yesInternational Journal of School Health, 2021
Context: Carrying a backpack with an inappropriate weight and non-optimal postures play a pivotal role in developing musculoskeletal pain. Studies have shown that school bags affect muscle activity and biomechanical variables in children and adolescents.
Parisa Sayyadi   +2 more
doaj   +1 more source

Subcutaneous lateral brow lift (“Z-lift”)

open access: yesGMS Interdisciplinary plastic and reconstructive surgery DGPW, 2015
Surgical eyebrow lift has been described by using many different open and endoscopic methods. Difficult techniques and only short time benefits oft lead to patients’ complaints. We present a safe and simple temporal Z-incision technique for eyebrow lift in 37 patients.
Ueberreiter, K   +3 more
openaire   +4 more sources

Influence of the Wheels on the Automobile Dynamics

open access: yesCommunications, 2004
The analysis of the vehicle dynamics with various types of wheels (R13, R14, R15) in two shifting modes and at the driving on a horizontal plane, at downhill- and uphill- driving as well as with different vehicle total mass is described in this paper.
Rastislav Istenik   +2 more
doaj   +1 more source

Total Facelift: Forehead Lift, Midface Lift, and Neck Lift [PDF]

open access: yesArchives of Plastic Surgery, 2015
Patients with thick skin mainly exhibit the aging processes of sagging, whereas patients with thin skin develop wrinkles or volume loss. Asian skin is usually thicker than that of Westerners; and thus, the sagging of skin due to aging, rather than wrinkling, is the chief problem to be addressed in Asians. Asian skin is also relatively large in area and
openaire   +3 more sources

Rail Geometry Analysis (From the Point of View of Wearing in the Operation)

open access: yesCommunications, 2003
Rail geometry analysis is, from the point of view of wearing in the operation, the question of present railway vehicles operation practice. The sequels of negative influence are reflected on the environment state.
Juraj Gerlici, Tomas Lack
doaj   +1 more source

Multifunctional Testing Rig for Machinery Safety Equipment

open access: yesE3S Web of Conferences, 2017
At the Centre of Drive and Lifting Technology ZAFT of Technische Hochschule Georg Agricola a new testing device will be available. The device is suitable for testing drivetrain components like safety clutches and hoist safety components like snag ...
Vöth Stefan   +2 more
doaj   +1 more source

Lifting Projectives [PDF]

open access: yesNagoya Mathematical Journal, 1966
Let R be a ring with radical (all rings have a unit element, all modules are unital). Often, one wishes to lift modules modulo , that is, to a given, say, left R/-module U find a left R-module E with the property that E/E ≃ U. This is of course not always possible.
openaire   +2 more sources

Measurement of changes in forehead height after endoscopic forehead lift [PDF]

open access: yesArchives of Aesthetic Plastic Surgery, 2020
Background Endoscopic forehead lift effectively corrects brow ptosis, and is less invasive and has fewer complications than classic forehead lift. Therefore, endoscopic procedures are often used instead of making a coronal incision.
Jae Min Chung   +2 more
doaj   +1 more source

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