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Hybrid treatment of varied orthodontic appliances for a patient with skeletal class II and temporomandibular joint disorders:A case report and review of literature 被引量:1
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作者 Tong Lu Li Mei +2 位作者 Bao-Chao Li Zi-Wei Huang Huang Li 《World Journal of Clinical Cases》 SCIE 2024年第2期431-442,共12页
BACKGROUND The relation between orthodontic treatment and temporomandibular disorders(TMDs)is under debate;the management of TMD during orthodontic treatment has always been a challenge.If TMD symptoms occur during or... BACKGROUND The relation between orthodontic treatment and temporomandibular disorders(TMDs)is under debate;the management of TMD during orthodontic treatment has always been a challenge.If TMD symptoms occur during orthodontic treatment,an immediate pause of orthodontic adjustments is recommended;the treatment can resume when the symptoms are managed and stabilized.CASE SUMMARY This case report presents a patient(26-year-old,female)with angle class I,skeletal class II and TMDs.The treatment was a hybrid of clear aligners,fixed appliances and temporary anchorage devices(TADs).After 3 mo resting and treatment on her TMD,the patient’s TMD symptom alleviated,but her anterior occlusion displayed deep overbite.Therefore,the fixed appliances with TAD were used to correct the anterior deep-bite and level maxillary and mandibular deep curves.After the levelling,the patient showed dual bite with centric relation and maximum intercuspation discrepancy on her occlusion.After careful examination of temporomandibular joints(TMJ)position,the stable bite splint and Invisible Mandibular Advancement appliance were used to reconstruct her occlusion.Eventually,the improved facial appearance and relatively stable occlusion were achieved.The 1-year follow-up records showed there was no obvious change in TMJ morphology,and her occlusion was stable.CONCLUSION TMD screening and monitoring is of great clinical importance in the TMD susceptible patients.Hybrid treatment with clear aligners and fixed appliances and TADs is an effective treatment modality for the complex cases. 展开更多
关键词 Temporomandibular disorder Skeletal class II Deep overbite Dual bite Invisible mandibular advancement appliance Case report
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Novel Fractal-Based Features for Low-Power Appliances in Non-Intrusive Load Monitoring
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作者 Anam Mughees Muhammad Kamran 《Computers, Materials & Continua》 SCIE EI 2024年第7期507-526,共20页
Non-intrusive load monitoring is a method that disaggregates the overall energy consumption of a building to estimate the electric power usage and operating status of each appliance individually.Prior studies have mos... Non-intrusive load monitoring is a method that disaggregates the overall energy consumption of a building to estimate the electric power usage and operating status of each appliance individually.Prior studies have mostly concentrated on the identification of high-power appliances like HVAC systems while overlooking the existence of low-power appliances.Low-power consumer appliances have comparable power consumption patterns,which can complicate the detection task and can be mistaken as noise.This research tackles the problem of classification of low-power appliances and uses turn-on current transients to extract novel features and develop unique appliance signatures.A hybrid feature extraction method based on mono-fractal and multi-fractal analysis is proposed for identifying low-power appliances.Fractal dimension,Hurst exponent,multifractal spectrum and the Hölder exponents of switching current transient signals are extracted to develop various‘turn-on’appliance signatures for classification.Four classifiers,i.e.,deep neural network,support vector machine,decision trees,and K-nearest neighbours have been optimized using Bayesian optimization and trained using the extracted features.The simulated results showed that the proposed method consistently outperforms state-of-the-art feature extraction methods across all optimized classifiers,achieving an accuracy of up to 96%in classifying low-power appliances. 展开更多
关键词 Nonintrusive load monitoring multi-fractal analysis appliance classification switching transients
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Effects and Predictions of Oral Appliances in Obstructive Sleep Apnea
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作者 Mitsunori Uno Ryugo Nonogaki +1 位作者 Masakazu Kurachi Hajime Ishigami 《Open Journal of Stomatology》 2023年第1期1-11,共11页
Since April 2004, the Asahi University Medical and Dental Center (hereinafter referred to as our center) has been providing oral appliances (hereinafter referred to as OA) to treat patients diagnosed with obstructive ... Since April 2004, the Asahi University Medical and Dental Center (hereinafter referred to as our center) has been providing oral appliances (hereinafter referred to as OA) to treat patients diagnosed with obstructive sleep apnea. The effects of using the OA and progress of 71 patients who received treatment at our center by wearing OA from March 2005 to the end of March 2016 were examined through questionnaires sent by physical mail. In 21 of 24 patients who underwent polysomnography after wearing OA, the apnea-hypopnea index (hereinafter referred to as AHI) significantly decreased after wearing OA (9.44 ± 10.37) compared to that before wearing OA (24.02 ± 13.57) (p = 8.7 × 10<sup>-8</sup>). The results showed that for patients who continuously use OA, it is necessary to have sound sleep/sleep soundly;further, the patients experienced a decrease in snoring when wearing OA, with only a few side effects on the temporomandibular joints and teeth. In addition, the closer the distance from the plane of the lower margin of the mandible to the hyoid bone after wearing OA, the more likely it was for the AHI to decrease, which suggests that wearing OA contributes to the prediction of therapeutic effects. 展开更多
关键词 Oral appliances POLYSOMNOGRAPHY Obstructive Sleep Apnea
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Investigation of electrostriction appliance and its applicationfor bionics flapping aircraft 被引量:6
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作者 金晓怡 颜景平 +1 位作者 夏雨阳 李德选 《Journal of Southeast University(English Edition)》 EI CAS 2006年第1期82-87,共6页
A novel design for an electrostriction appliance derived from the theory and application of electromagnetics is presented. The working principle, that is the application of gravitation and elasticity together to reali... A novel design for an electrostriction appliance derived from the theory and application of electromagnetics is presented. The working principle, that is the application of gravitation and elasticity together to realize the "shrinking" and "extending" effect from the distortion and transforming power into mechanical energy, is briefly explained. The characteristic parameter relationships are established and the experimental research is performed. Experimental results show that this sort of electrostriction appliance can perform well as regards driving force and beeline displacement, and furthermore, its self-weight is smaller. This makes it suitable for beeline drivers with a high application value, especially for the driver of the bionic appliance. In the application of the electrostriction appliance to a bionics-flapping aircraft, the wings can work with a flapping angle in the range of a certain value by controlling the "shrinking" and "extending" of the electrostriction appliance. It can reduce the startup power and the impact load of the driver. The flapping extent of the wings will change when the voltage which is put into the electrostriction appliance varies. This makes it more flexible as the bionics-flapping aircraft realizes different actions of flying. 展开更多
关键词 electrostriction appliance working principle bionics-flapping aircraft flapping-wing movement
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基于Archiver Appliance的束线数据管理系统 被引量:11
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作者 赵子龙 徐慧超 龚培荣 《核技术》 CAS CSCD 北大核心 2018年第3期7-12,共6页
上海光源是高性能的中能第三代同步辐射光源,采用实验物理和工业控制系统(Experimental Physics and Industrial Control System,EPICS),是我国目前投入运行的最大的用户科学实验平台。为了能够掌握已运行16条线站上各个设备的状况,有... 上海光源是高性能的中能第三代同步辐射光源,采用实验物理和工业控制系统(Experimental Physics and Industrial Control System,EPICS),是我国目前投入运行的最大的用户科学实验平台。为了能够掌握已运行16条线站上各个设备的状况,有一千余个传感器安装在各条线站上,用于设备的运行参量的记录。原有的运行数据通过EPICS自带的工具Channel Archiver来采集、存储和检索,但Channel Archiver在使用中表现出诸多不便。为了保证上海光源的运行数据能稳定、可靠地存储和方便地查询,本文采用了基于Archiver Appliance的新存档系统;同时,利用其提供的JSON(JavaScript Object Notation)接口,开发了基于Web网页的数据查询和分析系统,可对运行数据进行分类管理和查询,以及完成必要的运行数据的分析报表。该系统使用简便、操作可靠。 展开更多
关键词 上海光源 实验物理和工业控制系统 数据获取程序 基于JavaScript的数据交换格式 网页服务
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ApplianceBricks: A Scalable Network Appliance Architecture for Network Functions Virtualization 被引量:2
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作者 MA Shicong WANG Baosheng +1 位作者 ZHANG Xiaozhe GAO Xianming 《China Communications》 SCIE CSCD 2016年第S1期32-42,共11页
Network Functions Virtualization(NFV) is an attempt to help operators more effectively manage their networks by implementing traditional network functions embedded in specialized hardware platforms in term of virtuali... Network Functions Virtualization(NFV) is an attempt to help operators more effectively manage their networks by implementing traditional network functions embedded in specialized hardware platforms in term of virtualized software instances. But, existing novel network appliances designed for NFV infrastructure are always architected on a general-purpose x86 server, which makes the performance of network functions limited by the hosted single server. To address this challenge, we propose ApplianceB ricks, a novel NFV-enable network appliance architecture that is used to explore the way of consolidating multiple physical network functions into a clustered network appliance, which is able to improve the processing capability of NFV-enabled network appliances. 展开更多
关键词 NFV network appliance VIRTUALIZATION software ROUTERS cluster-based appliances CONSOLIDATION SCALABILITY
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Clinical Effect of Tip-Edge plus Appliance in Children with Angle Ⅱ1 Malocclusion 被引量:5
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作者 徐璐璐 陈莉莉 +2 位作者 杜星颜 高振洋 刘洪臣 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2013年第6期886-891,共6页
The effects of Tip-Edge plus appliance in the treatment of Angle Ⅱ1 malocclusion and the mechanism were investigated. Fifty-two Angle Ⅱ1 children, aged from 12.3-14.2 years, with mandibu- lar retrusion in permanent ... The effects of Tip-Edge plus appliance in the treatment of Angle Ⅱ1 malocclusion and the mechanism were investigated. Fifty-two Angle Ⅱ1 children, aged from 12.3-14.2 years, with mandibu- lar retrusion in permanent dentition were selected and treated with Tip-Edge plus appliance. Lateral cephalometric films taken before and after treatment were analyzed. The arithmetic mean and standard deviation were calculated for each variable. Paired t-test was performed to evaluate the significant treatment change. Results showed that the average treatment time was 16 months. Normal overjet and overbite were established with retroclination of upper incisors and proclination of lower incisors. U1-NA was decreased by 15.4° (P〈0.01). ANB and Y axial angle were decreased significantly (P〈0.05) Soft tissue measurements showed that FCA and UL-E were decreased dramatically (P〈0.05), and LL-E was increased significantly (P〈0.05). Remarkable soft tissue change was noted after the treatment and convex facial profile changed to the straight profile. In conclusion, Tip-Edge plus technique can quickly and efficiently correct anterior bite and lateral outlook. 展开更多
关键词 Tip-Edge plus appliance Angle Ⅱ1 malocclusion mandibular retrusion cephalometric measurements
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Unilateral self-locking mechanism for inchworm in-pipe robot 被引量:2
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作者 乔晋崴 尚建忠 +2 位作者 陈循 罗自荣 张详坡 《Journal of Central South University》 SCIE EI CAS 2010年第5期1043-1048,共6页
A unilateral self-locking mechanism(USM) was proposed to increase the tractive ability of the inchworm in-pipe robots for pipeline inspection.The USM was basically composed of a cam,a torsional spring and an axis.The ... A unilateral self-locking mechanism(USM) was proposed to increase the tractive ability of the inchworm in-pipe robots for pipeline inspection.The USM was basically composed of a cam,a torsional spring and an axis.The self-locking and virtual work principles were applied to studying the basic self-locking condition of the USM.In order to make the cooperation between the crutch and telescopic mechanism more harmonical,the unlocking time of the USM was calculated.A set of parameters were selected to build a virtual model and fabricate a prototype.Both the simulation and performance experiments were carried out in a pipe with a nominal inside diameter of 160 mm.The results show that USM enables the robot to move quickly in one way,and in the other way it helps the robot get self-locking with the pipe wall.The traction of the inchworm robot can rise to 1.2 kN,beyond the limitation of friction of 0.497 kN. 展开更多
关键词 unilateral self-locking mechanism TRACTION INCHWORM in-pipe robot
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Experimental determination and research on combustion characteristics domain of gas appliance 被引量:1
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作者 高文学 王启 +1 位作者 陈冠益 赵自军 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2011年第1期77-80,共4页
This manuscript developed an adjustability test system of gas appliances,and proposed determination methods of adjustability domain and technical approach of performance testing of gas appliance,in order to develop ex... This manuscript developed an adjustability test system of gas appliances,and proposed determination methods of adjustability domain and technical approach of performance testing of gas appliance,in order to develop experimental determination,quantify the product performance,design quality and combustion characteristics of gas appliances,and provide test foundation and platform for product design,performance test,quality assessment and technology upgrading for gas appliance industry aiming to multi-gas resources in China.The flexible range of gas appliances to different gases and the interchangeability domain of city gases were determined experimentally,together with the equation of combustion characteristics limit curves of gas appliances.The results showed that the second gas appliance has the biggest capability for the change of gas quality,which permits an 11.2% fluctuation in the Wobbe Index of gas;while the third gas appliance has the least capability for the change of gas quality,which only permits a 1.9% fluctuation in the Wobbe Index of gas.The paper also provides the common adjustability domain of the three gas appliances. 展开更多
关键词 city gas INTERCHANGEABILITY gas appliance combustion characteristics adjustability domain
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Prognostic predictors on the efficacy of oral appliance therapy for obstructive sleep apnea syndrome 被引量:1
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作者 Tadashi Iwamoto Yoshiyuki Takata +3 位作者 Nobutaka Kitamura Daichi Hasebe Tadaharu Kobayashi Chikara Saito 《Open Journal of Stomatology》 2012年第3期210-221,共12页
Objectives: The aim of this study was to identify independent prognostic predictors of the efficacy of oral appliance (OA) therapy for obstructive sleep apnea syndrome (OSAS). Materials and methods: The subjects consi... Objectives: The aim of this study was to identify independent prognostic predictors of the efficacy of oral appliance (OA) therapy for obstructive sleep apnea syndrome (OSAS). Materials and methods: The subjects consisted of 89 patients (77 males and 12 females) in whom OSAS had been treated with an OA. The mean age of the subjects was 52.4 years (range: 20 to 78 years) and mean body mass index (BMI) was 23.9 kg/m2 (range: 17.3 to 32.2 kg/m2). Lateral cephalograms were taken and 15 angle, 15 distance and 5 area measurements were calculated by means of a computerized program. Overnight polysomnography (PSG) was performed before treatment and several months after titration of OA therapy. OA therapy was considered effective if the apnea-hypopnea index several months after titration was under 15 events/h and was reduced to at least 50% of that before treatment. The examined data such as patient age, sex, BMI, data from cephalometric analyses, Epworth sleepiness scale, and data for pretreatment PSG were analyzed statistically, and multivariate logistic regression analysis was performed to clarify predictive variables for treatment outcome. Results: LFH (OR = 0.350;p = 0.035) and McN-A (OR = 0.276;p = 0.057) were selected as independent predictors from the explanatory variables. The predictive accuracy of the calculated logistic regression model was 74.2%. Conclusion: This results show that OA therapy for OSAS is more effective in patients with large anteroposterior diameter of the maxilla and large lower facial height. 展开更多
关键词 OBSTRUCTIVE Sleep APNEA Syndrome Oral appliance THERAPY PREDICTORS of Response
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Comparison of skeletal, dental and soft tissue changes in young adults with Class II malocclusion, treated either by camouflage, fixed functional appliance or orthognathic surgery—A prospective study on Indian subjects 被引量:1
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作者 Anjana Shetty Anand Patil Sanjay Ganeshkar 《Open Journal of Stomatology》 2012年第4期373-382,共10页
Introduction: Borderline Class II malocclusion due to deficient mandible can be treated either by orthodontic camouflage, fixed functional appliances or by orthodontics followed by surgical mandibular advancement. Met... Introduction: Borderline Class II malocclusion due to deficient mandible can be treated either by orthodontic camouflage, fixed functional appliances or by orthodontics followed by surgical mandibular advancement. Methodology: A prospective study was designed on young adults with Class II malocclusion on account of a deficient mandible. A total of 45 subjects were divided into three groups of 15 individuals each. The patients were treated either by camouflage, fixed functional appliances or by orthognathic surgery. Pre and post treatment cephalograms were used to assess the skeletal, dental and soft tissue changes. Pre and post treatment profile photographs were assessed on a Visual Analogue Scale (VAS) by orthodontists, oral surgeons and laypersons. Results: Each group achieved a reduction in facial convexity, but the results obtained from the surgical group were more pronounced than the camouflage and the fixed functional group. Conclusion: The reduction in convexity in the camouflage group was by retracting the upper anteriors, which increases the nasolabial angle. In the fixed functional appliance a combination of skeletal and dentoalveolar changes can be observed. However the most appropriate reduction in profile convexity can be obtained by combined orthodontic and surgical treatment of malocclusion. 展开更多
关键词 Class II Malocclulsion CAMOUFLAGE Fixed Function appliance ORTHOGNATHIC Surgery
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Outcomes of cervical degenerative disc disease treated by anterior cervical discectomy and fusion with self-locking fusion cage 被引量:2
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作者 Bo Zhang Yu-Zhen Jiang +1 位作者 Qing-Peng Song Yan An 《World Journal of Clinical Cases》 SCIE 2022年第15期4776-4784,共9页
BACKGROUND Cervical degenerative disc(CDD)disease is a common type of spondylosis.Although anterior cervical discectomy and fusion(ACDF)is the preferred treatment for CDD disease,internal fixation with a titanium plat... BACKGROUND Cervical degenerative disc(CDD)disease is a common type of spondylosis.Although anterior cervical discectomy and fusion(ACDF)is the preferred treatment for CDD disease,internal fixation with a titanium plate may cause various complications.The invention of the ACDF with a self-locking fusion cage(ROI-C)has effectively decreased the incidence of postoperative complications.AIM To observe the outcomes of CDD disease treated by ACDF with a ROI-C.METHODS Ninety patients with CDD disease treated at our hospital from March 2019 to March 2021 were included.They were divided into two groups(control group and observation group,n=45 in each)using a random number table.Patients in the control group received ACDF plus internal fixation with a titanium plate.Those in the observation group received ACDF+ROI-C placement.The two groups of patients were compared in terms of surgical parameters,pain,cervical spine function,range of motion,and complications.RESULTS The two groups of patients showed no significant differences in surgical time,blood loss,drainage volume,and length of hospital stay(P>0.05).No significant differences in the visual analogue scale(VAS),Japanese Orthopedic Association(JOA),and neck disability index(NDI)scores were observed between the two groups before surgery(P>0.05).The VAS and NDI scores in the observation group were considerably lower than those in the control group after surgery;however,the JOA scores in the observation group were significantly higher than those in the control group(P<0.05).No significant differences were observed in cervical disc height and the range of motion of the superior or inferior adjacent vertebrae between the two groups before surgery(P>0.05).The disc height in the observation group was larger than that in the control group after surgery.The range of motion of both the superior and inferior adjacent vertebrae was significantly smaller in the observation group than in the control group(P<0.05).The incidence of complications was only 2.22% in the observation group compared to 15.56% in the control group,and the difference was statistically significant(P<0.05).CONCLUSION Cervical spine function restoration was better with ROI-C with internal fixation in ACDF than with conventional titanium plates in ACDF for CDD disease. 展开更多
关键词 Degenerative disc disease self-locking fusion cage featuring VerteBRIDGE plates Anterior cervical discectomy and fusion Therapy
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Multi-objective reconfigurable production line scheduling for smart home appliances 被引量:2
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作者 LI Shiyun ZHONG Sheng +4 位作者 PEI Zhi YI Wenchao CHEN Yong WANG Cheng ZHANG Wenzhu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2021年第2期297-317,共21页
In a typical discrete manufacturing process,a new type of reconfigurable production line is introduced,which aims to help small-and mid-size enterprises to improve machine utilization and reduce production cost.In ord... In a typical discrete manufacturing process,a new type of reconfigurable production line is introduced,which aims to help small-and mid-size enterprises to improve machine utilization and reduce production cost.In order to effectively handle the production scheduling problem for the manufacturing system,an improved multi-objective particle swarm optimization algorithm based on Brownian motion(MOPSO-BM)is proposed.Since the existing MOPSO algorithms are easily stuck in the local optimum,the global search ability of the proposed method is enhanced based on the random motion mechanism of the BM.To further strengthen the global search capacity,a strategy of fitting the inertia weight with the piecewise Gaussian cumulative distribution function(GCDF)is included,which helps to maintain an excellent convergence rate of the algorithm.Based on the commonly used indicators generational distance(GD)and hypervolume(HV),we compare the MOPSO-BM with several other latest algorithms on the benchmark functions,and it shows a better overall performance.Furthermore,for a real reconfigurable production line of smart home appliances,three algorithms,namely non-dominated sorting genetic algorithm-II(NSGA-II),decomposition-based MOPSO(dMOPSO)and MOPSO-BM,are applied to tackle the scheduling problem.It is demonstrated that MOPSO-BM outperforms the others in terms of convergence rate and quality of solutions. 展开更多
关键词 reconfigurable production line improved particle swarm optimization(PSO) multi-objective optimization flexible flowshop scheduling smart home appliances
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Genetic expression of Col-2A and Col-10A as a function of administration of IGF-1 &TGF-<i>β</i>with and without anterior mandibular repositioning appliance on the growth of mandibular condylar cartilage in young rabbit 被引量:1
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作者 A. S. Patil R. B. Sable +1 位作者 R. M. Kothari P. Nagarajan 《Open Journal of Stomatology》 2013年第9期6-13,共8页
New Zealand (NZ) young rabbits with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β) with and without mandibular anterior repositioning appliances are explored for th... New Zealand (NZ) young rabbits with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β) with and without mandibular anterior repositioning appliances are explored for the growth of the mandibular condylar cartilage (MCC). 32 growing NZ and rabbits were divided into 4 groups: the group with saline injection in TMJ, the group which received growth factor injection in TMJ, the group which received anterior positioning appliance and the group which received growth factors injection as well as mandibular repositioning appliance. Gene expression was studied by real-time RT-PCR and cartilage growth by histomorphometry. Administration of growth factors along with mandibular repositioning appliances has induced 1) 1.70-fold expression of Col-2Agene (p value < 0.0005) and 2) 1.47-fold expression of Col-10Agene (p value < 0.0005). In contrast, administration of only mandibular repositioning appliances induced 1) 1.28-fold expression of Col-2Agene (p value < 0.0005) and 2) merely 0.62-fold expression of Col-10Agene (p value < 0.0005), while administration of growth factors only induced 1) mere 0.56-fold expression of Col-2Agene (p value 10A gene (p value growth factors along with mandibular repositioning appliances causes an increase in genetic expressions which have been corroborated by histomorphometry and validated by statistical analysis, during an accelerated growth of mandibular condylar cartilage. Administration of growth factors in the TMJ could provide a synergistic role along with mandibular repositioning appliances for treatment of mandibular retrognathism as well as disorders on the MCC. 展开更多
关键词 Transforming GROWTH Factor-β (TGF-β) Insulin-Like GROWTH FACTOR (IGF-1) Condylar Cartilage GROWTH MANDIBULAR REPOSITIONING appliances Col-2A Col-10A
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Research on the sales channels of the household appliances market 被引量:1
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作者 SUN Jian-xia 《Chinese Business Review》 2007年第3期28-33,共6页
Chinese traditional sales channels are seriously attacked by the new ones. Household appliances industry will realize the specialized divisions of. development, manufacture, sale and services completely. The model of ... Chinese traditional sales channels are seriously attacked by the new ones. Household appliances industry will realize the specialized divisions of. development, manufacture, sale and services completely. The model of sales channel in marketing is set as the core of this research; the merits and demerits of different sales channels are analyzed; the complicated selective relationship and the conflicts among the manufacturer, middlemen, and ultimate consumers, and the solutions to present multi-channels market and the developments of the sales channels are elaborated in an overall view; the opinion that the only way to develop this industry is raised to establish the competitive sales channels. The aim is to let local household appliances industry use the natural merits to build up a suitable channel rapidly and efficiently, and to speed up the self development and oeffection. 展开更多
关键词 household appliances industry sales channels channels building
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Distributed demand side management via smart appliances contributing to frequency control
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作者 张玮琛 《Journal of Chongqing University》 CAS 2015年第3期101-108,共8页
Nowadays renewable energy has become a trend for energy production but its variable nature has made balancing of demand and supply of the power grid difficult. Dynamic demand management using smart appliances is propo... Nowadays renewable energy has become a trend for energy production but its variable nature has made balancing of demand and supply of the power grid difficult. Dynamic demand management using smart appliances is proposed to serve as a way that part of the regulation burden of balancing demand and supply is shifted to the demand side. However, if all appliances respond to the same frequency deviation, they may start to synchronize, causing large power overshoots and instability of the power grid. Therefore, the idea of implementing randomness into the frequency control of the appliances is proposed and this is what we call a stochastic approach. Simulators are built from scratch to model both scenarios. The effect of synchronization is analyzed and the parameters that can affect the synchronization are investigated. It has been found that the larger the contribution from the smart appliances to the power grid, the easier and faster the synchronization takes place. The stochastic approach solves the problem of synchronization and averages out the large power overshoot. However, the overall performance of stochastic operations is unacceptable due to the randomness in the operation though the mean and variance are as expected. More advanced feedback policies and schemes may be designed to achieve a better performance. 展开更多
关键词 renewable energy demand side smart grid smart appliance frequency control RANDOMNESS
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Development of Cr-free anti-fingerprint hot-dip galvanized sheet for household appliances
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作者 YANG Peng~(1)) and PAN Yanfang~(2)) 1) Cold Rolling General Plant,Wuhan Iron & Steel Co..Ltd.,Hubei 430083,Wuhan,China 2) Manufacturing Department,Wuhan Iron & Steel Co.,Ltd.,Hubei 430083,Wuhan,China 《Baosteel Technical Research》 CAS 2010年第S1期44-,共1页
China has become the maximum household appliances manufacturing base worldwide.It is a new challenge facing the steel industry to develop the low-cost and environment-friendly sheet for household appliance industry,so... China has become the maximum household appliances manufacturing base worldwide.It is a new challenge facing the steel industry to develop the low-cost and environment-friendly sheet for household appliance industry,so Cr-free anti-fingerprint hot-dip galvanized sheet for household appliances is the upgraded product which satisfies the requirement of China household appliance industry' s nuisanceless treatment.The paper discusses the technical key points of development on Cr-free anti-fingerprint galvanized sheet for household appliances,including the development of the Cr-free anti-fingerprint chemical and the production technology of Cr-free anti-fingerprint galvanized sheet for household appliances.The paper elaborates the main compositions,physical features and properties of the Cr-free anti-fingerprint chemical, surface quality control technology,anti-fingerprint coating quality control technology,influence of anti-fingerprint film weight on corrosion resistance,conductibility,high-temperature discolouration resistance,acid resistance,alkaline resistance and solvent resistance of Cr-free anti-fingerprint hot-dip galvanized sheet, influence of anti-fingerprint coating uniformity on paintability of the sheet,influence of strip surface roughness on corrosion resistance and conductivity of the sheet and influence of strip surface quality on corrosion resistance of the sheet.Adopting the suitable Cr-free anti-fingerprint chemical and the reasonable production process parameters,the properties of the Cr-free anti-fingerprint hot-dip galvanized sheet conform to the delivery technical norms and the Cr-free anti-fingerprint hot-dip galvanized sheet becomes the new material for household appliances such as computer case. 展开更多
关键词 household appliances Cr-free anti-fingerprint hot-dip galvanized sheet
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Analysis of Referrals for Mandibular Advancement Appliances for Sleep Apnoea
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作者 David Parmenter Brian Millar 《Open Journal of Stomatology》 CAS 2022年第9期258-265,共8页
Aim: This article investigates the increasing awareness of Obstructive Sleep Apnoea (OSA) as a potentially serious health risk and highlights the role of the dentist in managing mild to moderate OSA cases which can be... Aim: This article investigates the increasing awareness of Obstructive Sleep Apnoea (OSA) as a potentially serious health risk and highlights the role of the dentist in managing mild to moderate OSA cases which can be improved with an intra-oral mandibular advancement appliance. Methods: Data from referrals to a Prosthodontic Unit from 01-01-2019 to 18-8-2022 were analysed. Results: A total of 240 consecutive referrals to an NHS hospital where a patient was fitted with a mandibular advancement appliance (MAA) were analysed and 160 (67%) were male and 80 (33%) were female. The mean age in years was 52 (2019), 50 (2020), 52 (2021) and 51 (2022). Mean age of male referrals was 51 and female referrals was 53. Conclusion: There are a large number of patients with OSA seeking a dental device and practitioners should be aware of this treatment modality to help the medical team manage OSA. Clinical relevance: Dentists may need to have a greater understanding of OSA and be able to provide MAAs. 展开更多
关键词 Sleep Apnoea Sleep appliances Mandibular Advancement Referrals
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Improving Energy Efficiency of Smart Household Appliances and Devices
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作者 Viktor I. Suzdorf Aleksandr S. Meshkov 《Journal of Power and Energy Engineering》 2014年第4期58-62,共5页
With the ever-increasing volume of applications of various kinds of electric drives in all spheres of human activity, the issues in improving the efficiency of the electromechanical converters of electric energy, one ... With the ever-increasing volume of applications of various kinds of electric drives in all spheres of human activity, the issues in improving the efficiency of the electromechanical converters of electric energy, one of the most important components of the electric drive (ED), are becoming increasingly important. Such issues include reducing their weight and size, improving the functional characteristics of these devices to increase their operational life and reducing the cost of manufacture. Taking full advantage of these opportunities relates to the AC and DC single-phase commutator motor (SCM), which is widely used in regulated and high-speed motor drives in home appliances and electric hand tools. The SCM is used in machinery where the load torque has a hyperbolic dependence on the rotational speed and the need to work with a large motor overload due to the “soft” mechanical characteristics of such motors. 展开更多
关键词 SMART HOUSEHOLD appliances EFFICIENCY MOTOR Control
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Periodontal Tissue Status among Mental Retardation Patients with Fixed Prosthodontic Appliances
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作者 Mohammed M. A. Abdullah Al-Abdaly Abdulaziz Mushabbab Abu Qahas +1 位作者 Abdullah Mushabbab Ali Honbos Abdulrahman Ahmed Abdullah Alshehri 《International Journal of Clinical Medicine》 2018年第1期49-58,共10页
Background: The mental, physical and social impediments cause limitation of chances in normal life as an equal level with others of the community;particularly in relation to maintain good oral hygiene and periodontal ... Background: The mental, physical and social impediments cause limitation of chances in normal life as an equal level with others of the community;particularly in relation to maintain good oral hygiene and periodontal health among the disabled patients who were receiving fixed partial denture. So the present study was performed to evaluate the periodontal tissue status among mental retardation patients with fixed prosthodontic appliances. Subjects and Methods: A total of 400 patients between the ages 18 and 50 years were clinically selected from outpatient clinics, college of dentistry, King Khalid University and rehabilitation center in Abha city, Saudi Arabia. They were divided into two equal groups as the following: group I: Two hundred mental retardation patients without fixed prosthodontic appliances (control group) and, group II: Two hundred mental retardation patients had fixed prosthodontic appliances for at least a year ago. A complete periodontal clinical examination was performed and the following indices were recorded: plaque index (PLI), gingival index (GI), and clinical attachment loss (CAL). All data was recorded and analyzed by ANOVA test. Results: The clinical results of the present study confirmed the relationship among the mental retardation, fixed prosthodontic appliances and destruction of periodontal tissues. It has been found that the severity of periodontal disease increases among the study group compared to the control group. Statistically significant differences were found in PLI, GI and CAL in the comparison between group I and II (p Conclusion: There was a negative relationship between mental retardation with a status of periodontal tissues and oral hygiene among the patients under fixed prosthodontic management. 展开更多
关键词 Fixed PROSTHODONTIC appliances MENTAL RETARDATION PERIODONTAL TISSUE STATUS
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