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Machine failures often arise from cumulative aging and anomalies, with early-warning indicators hidden in sensor-collected data. When high-quality labeled data are scarce for determining machine conditions, such failures can lead to performance decline and unforeseen incidents. To address these challenges, an unsupervised adversarial and cycle-consistent feature extraction network is presented, named CycleFeature. Specifically engineered for mechanical fault diagnosis, CycleFeature excels in scenarios characterized by limited labeled data and progressive machine aging. It integrates four crucial components: a sample feature extractor, a noise feature extractor, a generator, and a discriminator. This architecture employs multi-layer perceptions and convolutional neural networks. The training protocol for CycleFeature comprises two discrete phases: pre-training and integrated training. In the pre-training phase, the network collaboration ensures that the extracted features maintain cycle consistency and accurately represent the sample data. In the integrated training phase, the noise feature extractor captures features from noise and sample data. Through adversarial learning involving the sample feature extractor and the discriminator, the model fine-tunes the generated noise features to closely mirror the sample features. Tests are conducted based on the early health and pre-retirement high-risk data from 20 normally retired and 4 accident-retired vehicles. CycleFeature shows excellent prediction accuracy in the early warnings of these cases. It garnered higher frequency and value scores on the pre-retirement high-risk data from 24 vehicles compared to early health data, robustly confirming its accuracy and effectiveness. [Display omitted] • The unlabeled battery dataset is processed using MLP and CNN techniques. • A novel neural network architecture is specifically engineered for fault diagnosis. • Empirical validation robustly confirms the efficacy of the proposed approach. [ABSTRACT FROM AUTHOR]

Background: regular exercise is associated with increased body image; however, several barriers have hindered physical activity participation among adolescent girls and the gender disparity persists through adulthood. The study aimed to review the impact of physical activity interventions on adolescent girls' body image and discuss implications for reducing the disparity. Methods: the articles were systematically searched and reviewed from Web of Science (including MEDLINE) and EBSCOHOST (including Academic Search Premier, Child Development & Adolescent Studies, CINAHL, Education Resource Information Center (ERIC), APA PsycInfo, and SPORTDiscus) databases. Inclusion criteria were studies that: (a) implemented physical activity components, (b) targeted girls aged 10-19 years, (c) measured body image as an outcome, (d) were published in peer-reviewed journals after 2007, (e) and were in the English language. The PRISMA standards were followed to identify included interventions. Results: a total of eight interventions met the inclusion criteria. There were four interventions that employed the randomized controlled trial design. Only one study included long-term follow-up data after interventions while the Physical Self-Perception Profile was the only measure used across different included interventions. Fitness-based physical activity (n = 5) was the most common component reported. The majority of included interventions were implemented in the school settings. Two interventions were designed and delivered specifically to adolescent girls who were residing in low-income families or enrolled in schools situated in culturally diverse areas. In terms of efficacy, a total of seven interventions demonstrated an improvement in participants' body image. Conclusions: it can be concluded that physical activity-based intervention seems to be a promising strategy for improving adolescent girls' perceived body image; yet, further studies utilizing rigorous research designs are warranted. [ABSTRACT FROM AUTHOR]

Background and objective Thoracoscopic surgery has gradually become the major procedure for lung cancer surgery in our department. Its characteristics are minimal trauma and quick recovery, which make approximately 90% of patients discharge from the hospital after surgery. However, the postoperative complications still happen now and then. We analyzed the patients who had been hospitalized for longer than 7 days after thoracoscopic lung cancer surgery, aiming to summarize the types and risk factors of complications, and improve postoperative safety of patients. Methods The data were come from the prospective database of Thoracic Surgery Unit One in Peking Cancer Hospital, and patients that underwent thoracoscopic pulmonary surgery between Jan. 2010 and Dec. 2014 with length of stay more than 7 days were included in the study. The classifications of the complications were investigated and graded as mild or severe complications according to modified Claviengrading, the relationship between clinical factors and degrees of complications was also analyzed. Results The hospitalization of 115 cases were longer than 7 days after surgery, accounting for 10.3% (115/1,112) of the whole patients that underwent surgery during the same period. Eighty-one cases had mild complications, accounting for 7.3% (81/1,112) of the whole cases that underwent surgery during the same period and 70.4% (81/115) of the cases with prolonged length of stay; the proportions of severe complications in both groups were 3.1% (34/1,112) and 29.6% (34/115), respectively; and the proportions of complications that caused perioperative deaths were 0.18% (2/1112) and 1.7% (2/115), respectively. Among all the postoperative complications, the most common was air leakage for more than 5 days after surgery, with a total of 20 cases (1.8% and 17.4%). The other common complications were: atelectasis (19 cases, 1.7% and 16.5%), pulmonary infection (18 cases, 1.6% and 15.7%), etc. The less common complications was bronchopleural fistula (4 cases, 0.36% and 3.5%) with very high risk, and 2 cases died perioperatively due to the combination of acute respiratory distresssyndrome (ARDS). In the clinical factors, only preoperative low pulmonary function (FEV1%<70%) was the potential risk factor for postoperative severe complications (45.8% vs 23.6%, P=0.038). There was no significant difference either regarding the 5 year disease free survival or the 5 year overall survival between mild complication group and severe complication group, with 5 year DFS being 52.2% and 51.9%, respectively (P=0.894), and 5 year overall survival being 64.0% and 53.5%, respectively (P=0.673). Conclusion Continuous postoperative air leakage, atelectasis and pulmonary infections were the major causes for prolonged hospitalization after thoracoscopic surgery for lung cancer, and bronchopleural fistula was the most perilous complications. Patients with low preoperative pulmonary function were more likely to have severe postoperative complication, however, this would not influence the long term survival of the patients. [ABSTRACT FROM AUTHOR]

Background and objective Currently, there is no consensus on the follow-up strategy (follow-up time interval and content) of non-small cell lung cancer (NSCLC) in the world, and the relevant clinical evidence is also very limited. In this study, we aimed to summarize the recurrence/metastasis sites and timings of stage I NSCLC patients based on their follow-up data, aiming to provide a basis of follow-up time interval and content for this group of patients. Methods We retrospectively analyzed the 416 stage I NSCLC patients that underwent continuous anatomic lobectomy between Jan. 2000 to Oct. 2013 in our prospective lung cancer database. According to the recurrence/metastasis sites and timings, the long term follow-up time interval and content were explored. Results The 5-yr disease free survival (DFS) and overall survival (OS) in the whole group were 82.4% and 85.4%, respectively. There were 76 cases (18.3%) had recurrence/metastasis during follow-up, among which the most frequent site was pulmonary metastasis (21 cases, 5.0%), followed by brain metastasis (20 cases, 4.8%), bone metastasis (12 cases, 2.9%), and mediastinal lymph node metastasis (12 cases, 2.9%). Among the factors that could influence recurrence/metastasis, patients with pT2a suffered from a higher recurrence/metastasis rate compared to patients with pT1 (P=0.006), with 5-yr DFS being 73.8% and 87.3%, respectively (P=0.002), and the 5-yr OS being 77.7% and 90.3%, respectively (P=0.011). Conclusion The commonest recurrence/metastasis sites of stage I NSCLC after anatomic lobectomy are lung, brain and mediastinal lymph nodes, the risk of recurrence/metastasis within 2 years were equal to that between 3 years and 5 years. The follow-up frequencies and content within 2 years could be adjusted according to T stages. [ABSTRACT FROM AUTHOR]

Multiple phenolic compounds in the extract of Erigeron breviscapus synergistically contribute to the neurovascular protective effects. We conducted a phase I and pharmacokinetic study with the phenolic compound-enriched product extracted from Erigeron breviscapus, Erigerontis hydroxybenzenes injection (EHI), in healthy Chinese volunteers. A randomized, open-label, single-center, double-arm, dose-escalation study of EHI was conducted. The tolerability of intravenously EHI administrated in single- or multiple-dose (once daily for 7 days) was studied in 40 healthy Chinese volunteers and the pharmacokinetics of EHI was studied in additional 10 volunteers. The tolerated dose of intravenous infusion of EHI in healthy Chinese volunteers was 6 vials (equivalent to 90 mg bioactive phenolic compounds). The main limitations to dose escalation of EHI were transit changes in electrocardiogram and mild, transit increase in alanine aminotransferase. After intravenous administration of EHI, the average systemic clearance of multiple phenolic compounds of scutellarin, 1,3-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid, and 3,4-dicaffeoylquinic acid were 131, 29, 262, 112 L/h for male volunteers and 202, 28, 252, 117 L/h for female volunteers. The intervention of intravenous infusion of EHI in healthy Chinese volunteers was generally tolerated. The findings from this study provide data on the tolerability and pharmacokinetics of the extract from Erigeron breviscapus and support further trials. [ABSTRACT FROM AUTHOR]

Sensing tasks should be allocated and processed among sensor nodes in minimum times so that users can draw useful conclusions through analyzing sensed data. Furthermore, finishing sensing task faster will benefit energy saving. The above needs form a contrast to the lower efficiency of task-performing caused by the failure-prone sensor. To solve this problem, a multi-objective optimization algorithm of task scheduling is proposed for wireless sensor networks (MTWSN). This algorithm tries its best to make less makespan, but meanwhile, it also pay much more attention to the probability of task-performing and the lifetime of network. MTWSN avoids the task assigned to the failure-prone sensor, which effectively reducing the effect of failed nodes on task-performing. Simulation results show that the proposed algorithm can trade off these three objectives well. Compared with the traditional task scheduling algorithms, simulation experiments obtain better results. [ABSTRACT FROM AUTHOR]

A novel electrodeless discharge excilamp (EDEL) generated by microwave-driven Kr/Br2 mixtures (named KrBr-excilamp) was employed for organic pollutants degradation in aqueous solution for the first time. The usefulness of KrBr-excilamp so developed was assessed by ex-amining the photodegradation of quinoline and indole in aqueous solution. The photodissociation efficiency and TOC loss of quinoline and indole with the KrBr-excilamp were estimated. The results indicated that removal efficiency of 50 mg/L quinoline and 60 mg/L indole can reach 48.6% and 61.8% after 120 min and 60 min, respectively. The kinetic analysis showed that the direct photodegradation of quinoline and indole was in agreement with pseudo-first-order kinetics. Additionally, the identification of main in-termediate products during quinoline and indole degradation process was conducted by rotary evaporation coupled to headspace gas chromatography-mass spectrometry (RE-HE-GC-MS). This study proposed that photodegradation mechanism of quinoline and indole attributed mainly to the direct photolysis. [ABSTRACT FROM AUTHOR]

Scheduling tasks in wireless sensor networks is one of the most challenging problems. Sensing tasks should be allocated and processed among sensors in minimum times, so that users can draw prompt and effective conclusions through analyzing sensed data. Furthermore, finishing sensing task faster will benefit energy saving, which is critical in system design of wireless sensor networks. But sensors may refuse to take pains to carry out the tasks due to the limited energy. To solve the potentially selfish problem of the sensors, a non-cooperative game algorithm (NGTSA) for task scheduling in wireless sensor networks is proposed. In the proposed algorithm, according to the divisible load theory, the tasks are distributed reasonably to every node from SINK based on the processing capability and communication capability. By removing the performance degradation caused by communications interference and idle, the reduced task completion time and the improved network resource utilization are achieved. Strategy proof mechanism which provide incentives to the sensors to obey the prescribed algorithms, and to truthfully report their parameters, leading to an effient task scheduling and execution. A utility function related with the total task completion time and tasks allocating scheme is designed. The Nash equilibrium of the game algorithm is proved. The simulation results show that with the mechanism in the algorithm, selfish nodes can be forced to report their true processing capability and endeavor to participate in the measurement, thereby the total time for accomplishing the task is minimized and the energy-consuming of the nodes is balanced. [ABSTRACT FROM AUTHOR]

An analytical method is presented to investigate electromagnetothermoelastic behaviors of a hollow sphere composed of functionally graded piezoelectric material (FGPM), placed in a uniform magnetic field, subjected to electric, thermal and mechanical loads. For the case that material properties obey an identical power law in the radial direction of the FGPM hollow sphere, exact solutions for electric displacement, stresses, electric potential and perturbation of magnetic field vector in the FGPM hollow sphere are determined by using the infinitesimal theory of electromagnetothermoelasticity. Some useful discussion and numerical examples are presented to show the significant influence of material inhomogeneity. The aim of this research is to understand the effect of composition on electromagnetothermoelastic stresses and to design optimum FGPM hollow spheres. [ABSTRACT FROM AUTHOR]