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Self-assembled bright luminescent hierarchical materials from a tripodal benzoate antenna and heptadentate Eu(III) and Tb(III) cyclen complexes

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Frontiers of Chemical Science and Engineering 2019年第1期13卷 171-184页

作者： Aramballi J.Savyasachi David F.Caffrey Kevin Byrne gerard tobin Bruno D'Agostino Wolfgang Schmitt Thorfinnur Gunnlaugsson School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) University of Dublin Trinity College Dublin Dublin 2 Ireland School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) University of Dublin Trinity College Dublin Dublin 2 Ireland

The europium heptadentate coordinatively unsaturated (Eu(III)) and the terbium (Tb(III)) 1,4,7,10-tetraazacyclododecane (cyclen) complexes 1 and 2 were used in conjunction with ligand 3 (1,3,5-benzene-trisethynylbenzoate) to form the supramolecular self-assembly structures 4 and 5;this being investigated in both the solid and the solution state. The resulting self-assemblies gave rise to metal centered emission (both in the solid and solution) upon excitation of 3, confirming its role as a sensitizing antenna. Drop-cased examples of ligand 3, and the solid forms of 4 and 5, formed from both organic and mixture of organic-aqueous solutions, were analyzed using Scanning Electron Microscopy, which showed significant changes in morphology;the ligand giving rise to one dimensional structures, while both 4 and 5 formed amorphous materials that were highly dense solid networks containing nanoporous features. The surface area (216 and 119 m2·g^-1 for 4 and 5 respectively) and the ability of these porous materials to capture and store gases such as N2 investigated at 77 K. The self-assembly formation was also investigated in diluted solution by monitoring the various photophysical properties of 3–5. This demonstrated that the most stable structures were that consisting of a single antennae 3 and three complexes of 1 or 2 (e.g., 4 and 5) in solution. By monitoring the excited state lifetimes of the Eu(III) and Tb(III) ions in H2O and D2O respectively, we showed that their hydration states (the q-value) changed from -2 to 0, upon formation of the assemblies, indicating that the three benzoates of 3 coordinated directly to the each of the three lanthanide centers. Finally we demonstrate that this hierarchically porous materials can be used for the sensing of organic solvents as the emission is highly depended on the solvent environment;the lanthanide emission being quenched in the presence of acetonitrile and THF, but greatly enhanced in the presence of methanol.

关键词： self-assembly supramolecular chemistry lanthanides Eu(III) and Tb(III) complexes luminescence metallostars

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NFA:A neural factorization autoencoder based online telephony fraud detection

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Digital Communications and Networks 2024年第1期10卷 158-167页

作者： Abdul Wahid Mounira Msahli Albert Bifet gerard Memmi Department of Computer Sciences and Networks(INFRES) LTCITelecom ParisInstitut Polytechnique de ParisPalaiseau91120France Artificial Intelligence Institute The University of WaikatoPrivate Bag 31053240HamiltonNew Zealand

The proliferation of internet communication channels has increased telecom fraud,causing billions of euros in losses for customers and the industry each *** constantly find new ways to engage in illegal activity on the *** reduce these losses,a new fraud detection approach is *** fraud detection involves identifying a small number of fraudulent calls from a vast amount of call *** an effective strategy to combat fraud has become *** much effort has been made to detect fraud,most existing methods are designed for batch processing,not real-time *** solve this problem,we propose an online fraud detection model using a Neural Factorization Autoencoder(NFA),which analyzes customer calling patterns to detect fraudulent *** model employs Neural Factorization Machines(NFM)and an Autoencoder(AE)to model calling patterns and a memory module to adapt to changing customer *** evaluate our approach on a large dataset of real-world call detail records and compare it with several state-of-the-art *** results show that our approach outperforms the baselines,with an AUC of 91.06%,a TPR of 91.89%,an FPR of 14.76%,and an F1-score of 95.45%.These results demonstrate the effectiveness of our approach in detecting fraud in real-time and suggest that it can be a valuable tool for preventing fraud in telecommunications networks.

关键词： Telecom industry Streaming anomaly detection Fraud analysis Factorization machine Real-time system Security

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An Optimization Model for Reliability Improvement and Cost Reduction Through EV Smart Charging

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 608-620页

作者： Jinping Zhao Ali Arefi Alberto Borghetti gerard Ledwich School of Engineering and Energy Murdoch UniversityPerthAustralia Department of Electrical Electronicand Information EngineeringUniversity of BolognaBologna40126Italy School of Electrical Engineering and Robotics Queensland University of TechnologyBrisbaneQLD 4000Australia

There is a general concern that the increasing penetration of electric vehicles(EVs)will result in higher aging failure probability of equipment and reduced network *** electricity costs may also increase,due to the exacerbation of peak load led by uncontrolled EV *** paper proposes a linear optimization model for the assessment of the benefits of EV smart charging on both network reliability improvement and electricity cost *** objective of the proposed model is the cost minimization,including the loss of load,repair costs due to aging failures,and EV charging *** proposed model incorporates a piecewise linear model representation for the failure probability distributions and utilizes a machine learning approach to represent the EV charging *** two different test systems(a 5-bus network and the IEEE 33-bus network),this paper compares aging failure probabilities,service unavailability,expected energy not supplied,and total costs in various scenarios with and without the implementation of EV smart charging.

关键词： Aging failure electric vehicle(EV) EV charging power system reliability expected energy not supplied distribution network.

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Predictors of the placebo response in a nutraceutical randomized controlled trial for depression

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Journal of Integrative Medicine 2024年第1期22卷 46-53页

作者： Rosemary Arnold Jenifer Murphy-Smith Chee H.Ng David Mischoulon gerard J.Byrne Chad A.Bousman Con Stough Michael Berk Jerome Sarris Professorial Unit the Melbourne ClinicDepartment of PsychiatryUniversity of MelbourneRichmond 3121Australia Depression Clinical and Research Program Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMA 02115USA Faculty of Medicine Discipline of PsychiatryCentre for Clinical ResearchRoyal Brisbane&Women’s HospitalHerstonthe University of QueenslandBrisbane 4006Australia Departments of Medical Genetics PsychiatryPhysiology&Pharmacology and Community Health SciencesUniversity of CalgaryCalgaryAB T2N 1N4Canada Department of Psychiatry the University of MelbourneMelbourne 3052Australia Centre for Human Psychopharmacology Swinburne UniversityMelbourne 3122Australia The Institute for Mental and Physical Health and Clinical Translation School of MedicineBarwon HealthDeakin UniversityGeelong 3220Australia The Centre of Excellence in Youth Mental Health the University of MelbourneParkville 3052Australia Florey Institute of Neuroscience and Mental Health the University of MelbourneParkville 3052Australia NICM Health Research Institute Western Sydney UniversityWestmeadNSW 2145Australia

Objective The placebo response in depression studies is the change in symptoms amongst those who receive an inactive *** well-designed randomized controlled trials(RCTs)of depression have a high proportion of placebo responders,with little understanding as to *** present study assesses characteristics associated with the placebo response in a nutraceutical trial with a large proportion of placebo *** This is a secondary analysis of a nutraceutical depression RCT which identified no overall treatment benefit relative to placebo(n=69 in placebo group).We investigated participant characteristics such as socio-demographics,clinical features,and recruitment methods,and their association with the placebo *** genetic polymorphisms were also *** response was measured based on change in Montgomery-Asberg Depression Rating Scale *** association of these hypothesis-driven variables of interest and the placebo response was examined using linear mixed effects *** Greater levels of education,particularly pursuing post-high school education,better self-reported general health,marriage/de facto,greater improvement in the first trial week,and more failed antidepressant therapies in the current depressive episode were associated with greater placebo *** increased placebo response was not found in those recruited via social media nor in those with concomitant antidepressant *** nucleotide polymorphisms from the tryptophan hydroxylase 1(TPH1)gene(A779C and A218C)were weakly associated with greater placebo response,although the evidence was attenuated after accounting for multiple *** This is,to our knowledge,the first study within nutraceutical research for depression to assess the association between participant characteristics and variation in the placebo *** variables appeared to predict the placebo *** findings may encourage future trial design

关键词： Randomized controlled trial Placebo Depression Nutraceutical Psychiatry

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Cost-Effective Monitoring of the Fuel Air Equivalence-Ratio with a Lambda Sensor and a Microcontroller in a Downdraft Biomass Gasifier

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Open Journal of Applied Sciences 2024年第2期14卷 545-560页

作者： Jean Fidele Nzihou Salou Hamidou Ousmane Zoundi Frederic Ouattara Bila gerard Segda Formation and Research Unit in Sciences and Technologies University Norbert ZONGO Koudougou Burkina-Faso

The operation of biomass treatment devices such as gasifiers is based on the control of key parameters that play an important role in product formation. These include: temperature, excess oxygen, relative humidity and biomass composition. This work focuses on excess oxygen and temperature. Unfortunately, flue gas oxygen analyzers are expensive and not accessible to small industries. However, the equivalence ratio is linked to excess oxygen and has the advantage of not depending on biomass composition. This study therefore focuses on the design and development of a device for controlling this equivalence ratio by measuring oxygen concentration using a self-propelled Lambda probe, and a system for monitoring this equivalence ratio using an Arduino Uno 3 microcontroller. The temperature is recorded with an accuracy of ±1.5°C. For a heating time of 10 minutes, the response time to temperature change is around 3 seconds, which is sufficient for the device to function properly. This simple device is an efficient and cost-effective means of checking the equivalence ratio.

关键词： Equivalence Ratio Biomass Gasification Lambda Sensor Microcontroller C++

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Post-discharge follow-up of patients with spine trauma in the National Spinal Cord Injury Registry of Iran during the COVID-19 pandemic:Challenges and lessons learned

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Chinese Journal of Traumatology 2024年第3期27卷 173-179页

作者： Zahra Azadmanjir Moein Khormali Mohsen Sadeghi-Naini Vali Baigi Habibollah Pirnejad Mohammad Dashtkoohi Zahra Ghodsi Seyed Behnam Jazayeri Aidin Shakeri Mahdi Mohammadzadeh Laleh Bagheri Mohammad-Sajad Lotfi Salman Daliri Amir Azarhomayoun Homayoun Sadeghi-Bazargani gerard O'reilly Vafa Rahimi-Movaghai Health Information Management Department School of Allied Medical SciencesTehran University of Medical SciencesTehranIran Sina Trauma and Surgery Research Center Tehran University of Medical SciencesTehranIran Department of Neurosurgery Lorestan University of Medical SciencesKhoram-AbadIran Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehranIran Patient Safety Research Center Clinical Rsearch Institute Urma Universty of Medical SciencesUrmaIran Erasmus School of Health Policy&Management(ESHPM) Erasmus University RotterdamRoterdamthe Netherlands Brain and Spinal Cord Injury Research Center Neuroscience InstituteTehran University of Medical SciencesTehranIran Students Scientifc Research Center(SSRC) Tehran University of Medical SciencesTehranIran Department of Neurosurgery Arak University of Medical SciencesArakIran Trauma Research Center Kashan University of Medical SciencesKashanIran Shahid Rahnemoun Hospital Shahid Sadoughi University of Medical SciencesYazdIran Trauma Nuring Rearch entre Faculty of Nursing and Midwifry Kahan Universty of Medical Sciences Kahan Iran Clinical Research Development Unit Imam Hossein HospitalShahroud University of Medical SciencesShahroudIran Research Center for Evidence Based Medicine Faculty of MedicineTabriz University of Medical SciencesTabrizIran Road Trafic Injury Research Center Tabriz University of Medical SciencesTabrizIran School of Public Health and Preventive Medicine Monash UniversityMelbourneAustralia National Trauma Research Institute The AlfredMelbourneAustralia Department of Neurosurgery Shariati HospitalTehran University of Medical SciencesTehranIran Universal Scientific Education and Research Network(USERN) TehranIran Institute of Biochemistry and Biophysics University of TehranTehranIran

Purpose:The purpose of the National Spinal Cord Injury Registry of Iran(NSCIR-IR)is to create an infrastructure to assess the quality of care for spine trauma and in this study,we aim to investigate whether the NSCIR-IR successfully provides necessary post-discharge follow-up data for these ***:An observational prospective study was conducted from April 11,2021 to April 22,2022 in 8 centers enrolled in NSCIR-IR,respectively Arak,Rasht,Urmia,Shahroud,Yazd,Kashan,Tabriz,and *** were classified into 3 groups based on their need for care resources,respectively:(1)non-spinal cord injury(SCI)patients without surgery(group 1),(2)non-SCI patients with surgery(group 2),and(3)SCI patients(group 3).The assessment tool was a self-designed questionnaire to evaluate the care quality in 3 phases:pre-hospital,in-hospital,and *** data from the first 2 phases were collected through the *** post-hospital data were collected by conducting follow-up *** follow-ups were conducted for groups 1 and 2(non-SCI patients),while group 3(SCI patients)had a face-to-face *** study took place during the COVID-19 *** on age and time interval from injury to follow-up were expressed as mean±standard deviation(SD)and response rate and follow-up loss as a ***:Altogether 1538 telephone follow-up records related to 1292 patients were registered in the *** the total calls,918(71.05%)were related to successful follow-ups,but 38 cases died and thus were excluded from data *** the end,post-hospital data from 880 patients alive were *** success rate of follow-ups by telephone for groups 1 and 2 was 73.38%and 67.05%respectively,compared to 66.67%by face-to-face visits for group 3,which was very hard during the COVID-19 *** data completion rate after discharge ranged from 48%-100%,22%-100%and 29%-100%for groups ***:To improve patient accessibility,NSCIR-IR should take me

关键词： Follow-up studies Spinal injuries Spinal cord injuries COVID-19 NSCIR-IR

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Epidemio-Clinical Aspects of Ecrectile Dysfunction in Type 2 Diabetics at Abeche Chu

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Open Journal of Urology 2024年第2期14卷 50-60页

作者： Vadandi Valentin Mahamat Ali Mahamat Minguemadji Allah Siyangar Temga Ouang Michael Vounouzia Barthelemy Ndormadjita Allah Siyangar Abdelmahamoud Chene Konan Paul gerard Rimtebaye Kimassoum Urology Department University Hospital Center Abeche Chad Urology Department University Hospital of National Reference N’Djamena Chad Urology Department University Hospital of Renaissance N’Djamena Chad Urology Department University Hospital Center Abidjan Cote d’Ivoire

Introduction: Erectile dysfunction (ED) is a frequent complication of diabetes and more frequently affects type 2 diabetics. It is often unrecognised or its management is delayed because it is often overshadowed by other complications. The aim of our study was to describe the epidemiological and clinical aspects of ED. Patients and Method: This was a descriptive cross-sectional study over an 8-month period from April to December 2021, of type 2 diabetic subjects with erectile dysfunction (ED) seen at the University Hospital of Abeche. Erectile function was assessed using the International Index of Erectile Function (IIEFS5). Results: Out of a total of 112 patients with type 2 diabetes, 64 agreed to take part in the study. Only 40 patients correctly completed the survey form. Of these, 34 (85%) had erectile dysfunction. On average, our patients were over 49.4 years old, and 55.9% of them had had diabetes for more than 10 years. Erectile dysfunction had affected the social life of 21 patients (61.76% of cases) and 28 (82.35%) had not been informed by a healthcare professional. Most of them, 31 cases or 91.17%, had never told their GP about their erectile dysfunction. The patients who thought that diabetes had an influence on their erectile dysfunction represented 74%. Diabetes was poorly controlled in 22 patients (64.70%). According to the International Index of Erectile Function (IIEF5), 85% of diabetic patients suffer from erectile dysfunction, including 28.6% with severe erectile dysfunction, 35.7% with moderate erectile dysfunction and 14.3% with mild erectile dysfunction. Erectile dysfunction was significantly more frequent in diabetics with arterial hypertension and poor diabetic control. Conclusion: The hospital prevalence of erectile dysfunction in our patients is high. Early detection of this disorder therefore remains a challenge to be met in order to organise better psychological and drug treatment.

关键词： Diabetes Erectile Dysfunction Screening

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Knowledge and Attitudes of Nursing Staff towards Obstetric Fistula at the Abeche University Hospital, Chad

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Open Journal of Urology 2024年第5期14卷 277-281页

作者： Vadandi Valentin Mahamat Ali Mahamat Temga Ouang Michael Vounouzia Barthelemy Minguemadji Allah Siyangar Ndormadjita Allah Siyangar Abdelmahamoud Chene Konan Paul gerard Rimtebaye Kimassoum Department of Urology University Hospital Center Abeche Chad Department of Urology University Hospital of National Reference N&#8217Djamena Chad Department of Urology University Hospital of Renaissance N&#8217Djamena Chad Department of Urology University Hospital Center Abidjan Cote d&#8217Ivoire

Introduction: Prevention of obstetric fistula (OF) remains a challenge in Chad where its incidence is 464 cases/year. The present study aims to determine the knowledge and attitudes of nursing staff towards obstetric fistula. Patients and Method: This was a cross-sectional, descriptive and analytical study including nursing staff at the Abéché University Hospital. The survey took place from March to May 2023 and the sampling was exhaustive. Data collection was done using a form including a questionnaire on sociodemographic parameters, knowledge and attitudes. Participation in the study was voluntary and individual. Results: Participation in the study was 76.11%. Emergency department staff were the most represented, followed by gynecology-obstetrics staff with 34.4% and 20.91% of cases respectively. Nurses represented 53.17% of participants followed by doctors (23.52%). An exact definition of obstetric fistula was reported by 7.84% of participants and it was partial in 80.39%. The level of knowledge of risk factors was considered good in 12.41%. Exact knowledge of clinical signs was reported by 74.5% of cases. Among the participants, 1.96% reported that the treatment of obstetric fistula is traditional. Knowledge about means of prevention was considered good by 13.72% (n = 21), and attitudes by 26.79%? Obstetric fistula knowledge was influenced by profession (doctor, p = 0.011) and attitudes by service (p = 0.004) and profession (doctor, p = 0.001). Conclusion: Obstetric fistula is a curable disease whose prevention remains possible and requires good knowledge of the disease and the promotion of safe motherhood. This study should serve as a basis for the establishment of the obstetric fistula module in the curriculum of healthcare personnel and the promotion of continuing training for its eradication.

关键词： Obstetric Fistula Knowledge Attitudes CHU-A Abeche Chad

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Large Painful Bursae at Abeche Hospital: Epidemiological, Clinical, Therapeutic and Evolutionary Aspects

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Open Journal of Urology 2024年第5期14卷 312-316页

作者： Vadandi Valentin Mahamat Ali Mahamat Minguemadji Allah Siyangar Temga Ouang Michael Vounouzia Barthelemy Ndormadjita Allah Siyangar Abdelmahamoud Chene Konan Paul gerard Rimtebaye Kimassoum Department of Urology University Hospital Center Abeche Chad Department of Urology University Hospital of National Reference N&#8217Djamena Chad Department of Urology University Hospital of Renaissance N&#8217Djamena Chad Department of Urology University Hospital Center Abidjan Cote d’Ivoire

Introduction: Acute large bursae (ALB) are a frequent reason for emergency consultations. The aim of this study was to investigate the prevalence, clinical course, treatment and evolution of ALB at Abeche University Hospital. Patients and Method: This was a 45-month cross-sectional study from January 2020 to September 2023. Male patients of any age who had been admitted to and treated for acute large bursae at the Abeche University Hospital were included. Sociodemographic, clinical and therapeutic variables were studied. Results: Acute large bursae accounted for 7.92% of emergency admissions. The average age was 39.40 years. 60.27% of patients came from rural areas. The average consultation time was 4 days, ranging from a few hours to 18 days. The main reason for consultation was pain. Strangulated inguino-scrotal hernia was the most common, followed by acute orchi-epididymitis, accounting for 41.8% and 26% of cases respectively. Traditional treatment prior to consultation was attempted in 13.7% of cases. All patients were treated as emergencies, 41 of whom had received medical treatment. Of the patients treated surgically, orchidopexy was performed in all. Parietal suppuration and anaemia occurred in 6.2% and 4.8% of cases respectively. Conclusion: A accounts for a significant proportion of our emergency care activity. However, patients are seen with a delay, which jeopardises the functional prognosis of the testicle and intestine.

关键词： Acute Large Bursa Orchiepididymitis Torsion Spermatic Cord CHU-A

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Experience on the Management of Priapism at the Yaounde Central Hospital

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Open Journal of Urology 2024年第4期14卷 244-251页

作者： Philip Fernandez Owon’Abessolo Jean Cédric Fouda Armel Essomba Cécile Etobe Achille Kpanou Yellem Yvon gerard Beling Abanda Bright Awondo-Che Milama Steves Ndang Ngou Department of Surgery and Specialties Faculty of Medicine and Pharmaceutical Sciences University of Douala Douala Cameroon Urology Service Yaound&#233 Central Hospital Yaound&#233 Cameroon Department of Surgery and Specialty Faculty of Medicine and Biomedical Sciences University of Yaound&#233 1 Yaound&#233 Cameroon Department of Urology University of Health Sciences Owendo Gabon

Introduction: Priapism is a urological emergency defined as a prolonged penile erection for more than 6 hours, painful and sustained, occurring without any sexual stimulation. The diagnosis is essentially clinical. However, the management is often late because of the delay in consultation, which is characteristic in our context. The purpose of our study is to describe the clinical and therapeutic aspects of patients who presented with priapism at the Yaoundé Central Hospital as well as to propose a present synthesis concerning the management of priapism. Methodology: We conducted a descriptive cross-sectional study with a retrospective recruitment method in the urology department of the YCH. It extended over a period of 6 months from January 2022 to June 2022. We reviewed the files of patients seen within a period spanning 10 years from January 1st, 2011 to January 31st, December 2021. The study population consisted of patients who had been hospitalized and treated for priapism. We carried out consecutive and non-exhaustive sampling. Results: During the study, we collected data from the medical files of 13 patients. The median age was 25 years, with extremes of 12 and 82 years. Most of the patients were between 20 and 30 years old (38.5%). Most of the patients were single (69.2%). Sickle cell disease was the main comorbidity encountered during the study (76.9%). The median time from onset of symptoms to consultation was 10 [6 - 20.5] hours, with extremes of 1 and 264 hours. All patients presented with painful penile erection (100%). There was concomitant multifocal pain in 38.5% of cases suggestive of vaso-occlusive crises (VOC). The symptoms occurred in a non-traumatic context in the majority of cases (92.3%). The T-shunt was the most used surgical technique (84.6%). The median duration of surgery was 36 [35 - 40] minutes with extremes of 25 and 60 minutes, the majority being operated in less than 45 minutes (84.6%). The frequency of postopera

关键词： Priapism Treatment Experience

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