Due to the harsh operating environment and ultralong operating hours of wireless sensor networks (WSNs), node failures are inevitable. Ensuring the reliability of the data collected by the WSN necessitates the utmost importance of diagnosing faults in nodes within the WSN. Typically, the initial step in the fault diagnosis of WSN nodes involves extracting numerical features from neighboring nodes.
View Article and Find Full Text PDFWireless sensor network (WSN) is inevitably subject to node failures due to their harsh operating environments and extra-long working hours. In order to ensure reliable and correct data collection, WSN node fault diagnosis is necessary. Fault diagnosis of sensor nodes usually requires the extraction of data features from the original collected data.
View Article and Find Full Text PDFLithium-sulfur batteries (LSBs) are still limited by the shuttle of lithium polysulfides (LiPS) and the slow Li-S reaction. Herein, we demonstrate that when using cobalt sulfide as a catalytic additive, an external magnetic field generated by a permanent magnet can significantly improve the LiPS adsorption ability and the Li-S reaction kinetics. More specifically, the results show both experimentally and theoretically how an electron spin polarization of Co ions reduces electron repulsion and enhances the degree of orbital hybridization, thus resulting in LSBs with unprecedented performance and stability.
View Article and Find Full Text PDFActive metal ions often show a strong cutting effect on the chemical bonds during high-temperature thermal processes. Herein, a one-pot metal ion cutting-assisted method was adopted to design defect-rich MoS nanosheet (NS)/ZnS nanoparticle (NP) heterojunction composites on carbon nanofiber skeletons (CNF@MoS/ZnS) via a simple Ar-ambience annealing. Results show that Zn ions capture S ions from MoS and form into ZnS NPs, and the MoS NSs lose S ions and become MoS ones.
View Article and Find Full Text PDFCarbon nanotubes (CNTs) are often used to settle down the sluggish reaction kinetics in lithium-sulfur batteries (LSBs). However, the self-aggregation of CNTs often makes them fail to effectively inhibit the shuttling effect of soluble lithium polysulfide (LiPS) intermediates. Herein, a type of ultra-stable carbon micro/nano-scale interconnected "carbon cages" has been designed by incorporating polar acid-treated carbon fibers (ACF) into three-dimensional (3D) CNT frameworks during vacuum filtration processes.
View Article and Find Full Text PDFZhonghua Zheng Xing Wai Ke Za Zhi
September 2013
Objective: To assess the clinical features and therapeutic effect of free thin anterolateral thigh flap for the reconstruction of intraoral defects.
Methods: The clinicopathologic data of 34 cases with oral carcinoma were obtained from Institute and Hospital of Stomatology, Nanjing University Medical School, from December 2008 to December 2011. These 34 patients underwent the simultaneous tumor resection and intraoral defects reconstruction with free thin anterolateral thigh flaps.
Many studies have examined the association between the VEGF +936C/T (rs833061) and +460C/T (rs3025039) gene polymorphisms and oral cancer risk in various populations, but their results have been inconsistent. To assess this relationship more precisely, we performed a meta-analysis. The PubMed, Embase, Web of Science, and China National Knowledge Infrastructure databases were searched for case-control studies that were published up to January 2013.
View Article and Find Full Text PDFVascular endothelial growth factor (VEGF) is considered as a prime mediator of angiogenesis and has been implicated in carcinogenesis and metastasis. Various studies examined the relationship between VEGF protein overexpression with the clinical outcome in patients with oral cancer, but yielded conflicting results. Electronic databases updated to March 2013 were searched to find relevant studies.
View Article and Find Full Text PDFZhonghua Zheng Xing Wai Ke Za Zhi
September 2011
Objective: To assess the clinical features and therapeutic efficacy of anterolateral thigh (ALT) flaps for the intraoral defects reconstruction.
Methods: The clinicopathologic data of 67 cases with oral tumors were obtained from School of Stomatology, Nanjing University Medical Center from Dec. 2008 to Dec.
Zhonghua Zheng Xing Wai Ke Za Zhi
July 2009
Objective: To investigate the application of titanium mesh and free forearm flap for reconstruction of maxillary defect resulted from tumor resection.
Methods: From 2004 to 2008, 19 cases with maxillary tumor underwent tumor resection. The defects were reconstructed immediately with titanium mesh for bony defects and free forearm flap for oral mucosa defects.
The treatment failures of oral squamous cell carcinoma (OSCC) are mostly local and regional recurrences. The aim was to estimate the prognosis of patients with recurrent OSCC through the prognostic staging system. We reviewed 81 patients with recurrent OSCC from April 1, 1999, to April 1, 2005.
View Article and Find Full Text PDFObjective: To evaluate the methods of orthognathic treatment for mandibular asymmetry.
Methods: 110 cases of mandibular asymmetry had been treated in past thirteen years. The type of deformity, the management of the cases, and the effects of orthognathic treatment were summarized in this paper.