The triboelectric nanogenerator (TENG) is a recent technology that reforms kinetic energy generation and motion sensing. A TENG comes with variety of structures and mechanisms that make it suitable for wide range of applications and working conditions. Since mechanical vibrations are abundant source of energy in the surrounding environment, the development of a TENG for vibration energy harvesting and vibration measurements has attracted a huge attention and great research interest through the past two decades. Due to the high output voltage and high-power density of a TENG, it can be used as a sustainable power supply for small electronics, smart devices, and wireless sensors. In addition, it can work as a vibration sensor with high sensitivity. This article reviews the recent progress in the development of a TENG for vibration energy harvesting and vibration measurements. Systems of only a TENG or a hybrid TENG with other transduction technologies, such as piezoelectric and electromagnetic, can be utilized for vibrations scavenging. Vibration measurement can be done by measuring either vibration displacement or vibration acceleration. Each can provide full information about the vibration amplitude and frequency. Some TENG vibration-sensing architectures may also be used for energy harvesting due to their large output power. Numerous applications can rely on TENG vibration sensors such as machine condition monitoring, structure health monitoring, and the Internet of things (IoT).
Arthrocentesis is an effective management method for symptomatic patients with ADDWOR at one-month post treatment, especially in the absence of parafunctional habits.
The objective of this study is to investigate thyroid and parathyroid functions in patients with laryngeal carcinoma after total laryngectomy with hemithyroidectomy with or without irradiation, and to determine if irradiation when following surgery has an additive effect contributing to either or both glands hypo function. This study included 17 patients with laryngeal squamous cell carcinoma who were subjected to surgery. Nine of them were further justified for postoperative radiotherapy as well. All patients were subjected to Clinical assessment, including adequate history taking and physical examination, to detect the presence of hypothyroidism or hypoparathyroidism. Laboratory assessment of thyroid function included TSH and T4 assay, and parathyroid function included corrected serum calcium and parathormone levels. Eight (48 %) patients were treated with surgery alone, and 9 (52 %) patients received postoperative radiotherapy. In this study, 13 out of the 17 patients (78 %) were found to be hypothyroid and 4 (22 %) were euthyroid, while 7 (42 %) were found to have hypoparathyroidism. The study showed; among the 8 patients who were treated by surgery only, 5 (62.5 %) of them developed hypothyroidism and 3 (37.5 %) were euthyroid and 3 (37.5 %) developed hypoparathyroidism and 5 (62.5 %) were normal. Among the 9 patients who were treated by surgery and radiotherapy, 8 (88.9 %) developed hypothyroidism and 1 (11.1 %) was euthyroid and 4 (44.4 %) developed hypoparathyroidism and 5 (55.6 %) were normal. The study confirms the development of hypothyroidism with or without hypoparathyroidism after total laryngectomy with a higher incidence in those treated by combined surgery and radiotherapy and in supraglottic tumors.
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