Results 11 to 20 of about 386,611 (339)

Electromagnetic–Triboelectric Hybridized Nanogenerators

open access: yesEnergies, 2021
Since the triboelectric nanogenerator (TENG) was invented, it has received extensive attention from researchers. Among the many pieces of research based on TENG, the research of hybridized generators is progressing rapidly.
Lin Xu   +3 more
doaj   +1 more source

Spontaneous spinal epidural hematoma leading to acute paraplegia: a case report

open access: yesJournal of Medical Case Reports, 2023
Background Spontaneous spinal epidural hematoma is an infrequent yet potentially debilitating condition characterized by blood accumulation in the epidural space, with only 300 documented cases globally.
Yu Liu   +2 more
doaj   +1 more source

A Spherical Hybrid Triboelectric Nanogenerator for Enhanced Water Wave Energy Harvesting [PDF]

open access: yes, 2018
Water waves are a continuously generated renewable source of energy. However, their random motion and low frequency pose significant challenges for harvesting their energy.
Hwang, Woonbong   +7 more
core   +1 more source

Fundamental Understanding of Multicellular Triboelectric Nanogenerator with Different Electrical Configurations

open access: yesMicromachines, 2023
The single-cell triboelectric nanogenerator (TENG) often produces insufficient energy, leading to the use of a multicellular TENG structure. This work experimented with and simulated a dual-cell TENG with various configurations in parallel and series ...
Zifan Li   +3 more
doaj   +1 more source

Smoothed Analysis for the Conjugate Gradient Algorithm [PDF]

open access: yes, 2016
The purpose of this paper is to establish bounds on the rate of convergence of the conjugate gradient algorithm when the underlying matrix is a random positive definite perturbation of a deterministic positive definite matrix.
Menon, Govind, Trogdon, Thomas
core   +1 more source

In-hospital cardiac arrest incidence and outcomes in the era of COVID-19: an observational study in a Singapore hospital

open access: yesInternational Journal of Emergency Medicine, 2021
Background COVID-19 pandemic has resulted in significant strain on healthcare resources and this requires diligent resource re-allocation. We aim to describe the incidence and outcomes of in-hospital cardiac arrest (IHCA) during this period as compared ...
Ting Lyu   +10 more
doaj   +1 more source

Stevens-Johnson Syndrome complicated by obstructive uropathy, pneumothorax, and pneumomediastinum: a case report and literature review

open access: yesBurns & Trauma, 2019
Background Stevens-Johnson Syndrome (SJS) is an acute mucocutaneous eruption with blisters of the skin and haemorrhagic erosions of mucous membranes. This report describes air-leak syndrome and obstructive uropathy occurring simultaneously in a teenage ...
Damian Bruce-Hickman   +3 more
doaj   +1 more source

Isometric Double-Layer Staggered Chain Teeth Triboelectric Nanogenerator

open access: yesMicromachines, 2022
The sliding freestanding layer triboelectric nanogenerator (SF-TENG) is a sustainable power source that can convert mechanical energy from linear or rotating mechanical motion to electrical energy. This paper proposes a double-layer staggered chain teeth
Shuai Ding   +3 more
doaj   +1 more source

Does search boost efficiency? [PDF]

open access: yes, 2015
Poaching externality, arising from job-to-job turnovers, implies that a planner should allocate fewer resources to costly job creations. However, these search efforts increase competition among employers, and this could in turn internalize the ...
Ge, Teng
core   +1 more source

Minimally Invasive Lateral Access Corpectomy for a Solitary Renal Cell Carcinoma Spinal Metastasis: A Case Report [PDF]

open access: yesJournal of Minimally Invasive Spine Surgery and Technique, 2018
Spinal metastases can present with neurological symptoms due to cord compression which often requires urgent surgical decompression and fixation. However, the posterior spinal approach has limitations in cord decompression.
Joel Lee Zhao Jie   +2 more
doaj   +1 more source

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