Results 1 to 10 of about 58,178 (257)

Nanostructured Silver Found in Ancient Dacian Bracelets from Cehei Hoard—Salaj, Romania [PDF]

open access: yesNanomaterials
Nanomaterials are usually associated with modern technologies and advanced processing methods. Three silver Dacian bracelets within Cehei hoard (Salaj County, Romania) are tougher than they should be according to the apparently higher silver content. The
Ioan Petean   +8 more
doaj   +2 more sources

Synthesis of a Molecular Charm Bracelet via Click Cyclization and Olefin Metathesis Clipping [PDF]

open access: yesJournal of the American Chemical Society, 2010
We describe the synthesis of a polycatenated cyclic polymer, a structure that resembles a molecular charm bracelet. Ruthenium-catalyzed ring-opening metathesis polymerization of an aminocontaining cyclic olefin monomer in the presence of a chain ...
Wayne E Steinmetz, Robert Grubbs
exaly   +4 more sources

A-WEAR Bracelet for Detection of Hand Tremor and Bradykinesia in Parkinson’s Patients

open access: yesSensors, 2021
Parkinson’s disease patients face numerous motor symptoms that eventually make their life different from those of normal healthy controls. Out of these motor symptoms, tremor and bradykinesia, are relatively prevalent in all stages of this disease.
Asma Channa   +2 more
exaly   +3 more sources

Vibration Alert Bracelet for Notification of the Visually and Hearing Impaired [PDF]

open access: yesJournal of Open Hardware, 2019
This paper presents the prototype of an electronic vibration bracelet designed to help the visually and hearing impaired to receive and send emergency alerts. The bracelet has two basic functions.
Kelsey Conley   +7 more
doaj   +3 more sources

Efficacy of wearable transcutaneous electrical acupoint stimulation bracelet on moderate-to-severe postoperative nausea and vomiting in patients after general anesthesia: a study protocol for a multicenter randomized controlled trial [PDF]

open access: yesTrials
Background Postoperative nausea and vomiting (PONV) is the most common complication following general anesthesia. Currently, pharmaceutical therapy is the primary method of treatment, but it has reached a plateau, and it is accompanied by inherent ...
Peng Ding   +8 more
doaj   +2 more sources

An Energy-Based Method for Orientation Correction of EMG Bracelet Sensors in Hand Gesture Recognition Systems

open access: yesSensors, 2020
Hand gesture recognition (HGR) systems using electromyography (EMG) bracelet-type sensors are currently largely used over other HGR technologies. However, bracelets are susceptible to electrode rotation, causing a decrease in HGR performance.
Lorena Isabel Barona López   +2 more
exaly   +3 more sources

Helping Blind People Grasp: Evaluating a Tactile Bracelet for Remotely Guiding Grasping Movements [PDF]

open access: yesSensors
The problem of supporting visually impaired and blind people in meaningful interactions with objects is often neglected. To address this issue, we adapted a tactile belt for enhanced spatial navigation into a bracelet worn on the wrist that allows ...
Piper Powell   +5 more
doaj   +2 more sources

Estimation of Heart Rate and Energy Expenditure Using a Smart Bracelet during Different Exercise Intensities: A Reliability and Validity Study

open access: yesSensors, 2022
Background. With wrist-worn wearables becoming increasingly available, it is important to understand their reliability and validity in different conditions.
Yihui Cai   +8 more
doaj   +1 more source

The Ava bracelet for collection of fertility and pregnancy data in free-living conditions: An exploratory validity and acceptability study

open access: yesDigital Health, 2022
Objective To evaluate the validity and acceptability of the Ava bracelet for collecting heart rate, sleep, mood, and physical activity data among reproductive-aged women (pregnant and nonpregnant) under free-living conditions.
Alison K. Nulty   +2 more
doaj   +1 more source

Bracelet from an Elunino burial at the Teleut Vzvoz-I site

open access: yesВестник археологии, антропологии и этнографии, 2020
The article studies a stone bead bracelet found in an Early Bronze Age burial of the Elunino archaeological culture during the excavation of the Teleut Vzvoz-I burial ground (heterogeneous in time) in the south of Western Siberia (Forest-Steppe Altai ...
I.A. Valkov
doaj   +1 more source

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