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Non-alcoholic fatty liver disease is not independent risk factor for cardiovascular disease event:A cohort study

World Journal of Hepatology 2020年第6期12卷 323-331页

作者： Nima Motamed Hossein Ajdarkosh Maral Ahmadi Dhayaneethie Perumal G Hossein Ashrafi Mehdi Nikkhah Amir Hossein Faraji mansooreh maadi Mahmoodreza Khoonsari Nader Rezaie Behzad Farahani Fahimeh Safarnezhad Tameshkel Mitra Ameli Mahshid Panahi Mohammad Hadi Karbalaie Niya Farhad Zamani Department of Social Medicine Zanjan University of Medical SciencesZanjan ***Iran Gastrointestinal and Liver Diseases Research Center Iran University of Medical SciencesTehran ***Iran Faculty of Science Engineering and ComputingKingston UniversityKingstonLondon KT12EEUnited Kingdom Cancer Theme SEC Faculty Penrhyn Road Kingston UniversityLondon KT12EEUnited Kingdom Department of Pulmonology Firouzgar HospitalIran University of Medical SciencesTehran ***Iran Department of Cardiology Iran University of Medical SciencesTehran ***Iran

BACKGROUND There are no consistent results between previous studies for an independent association between non-alcoholic fatty liver disease(NAFLD)and cardiovascular disease(CVD)*** To determine if there is an independent association between NAFLD and CVD *** In the present study,valid outcome data of 4808 subjects were available for phase 2 of our cohort *** subjects had been followed up for seven years from phase 1,beginning in 2009-2010 to phase 2 during *** and multiple Cox proportional models were used to determine the association between NAFLD in the primary phase of the cohort and subsequent fatal and non-fatal CVD events during *** The incidence of non-fatal CVD events in males with NAFLD was significantly higher(P=0.004)than in males without NAFLD.A positive association was demonstrated between NAFLD and non-fatal CVD events in males(Hazard ratio=1.606;95%CI:1.166-2.212;P=0.004)by the simple Cox proportional hazard model,but no independent association was detected between these in the multiple Cox *** No independent association was detected between NAFLD and *** is likely that diabetes mellitus and age may be the principle mediators in this regard.

关键词： Non-alcoholic fatty liver disease Cardiovascular disease Cohort Type 2 diabetes mellitus Risk factor Follow up

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Fatty liver index vs waist circumference for predicting non-alcoholic fatty liver disease

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World Journal of Gastroenterology 2016年第10期22卷 3023-3030页

作者： Nima Motamed Masoudreza Sohrabi Hossein Ajdarkosh Gholamreza Hemmasi mansooreh maadi Fatemeh Sima Sayeedian Reza Pirzad Khadijeh Abedi Sivil Aghapour Mojtaba Fallahnezhad Farhad Zamani Department of Social Medicine Zanjan University of Medical Sciences Zanjan 45154 Iran Gastrointestinal and Liver Disease Research Center Iran University of Medical Sciences Tehran 159347 Iran Department of Endocrinology Sari University of Medical Sciences Tehran 159347 Iran Razi Science Researchers Institute Karaj 31976 Iran

AIM: To determine the discriminatory performance of fatty liver index(FLI) for non-alcoholic fatty liver disease(NAFLD).METHODS: The data of 5052 subjects aged over 18 years were analyzed. FLI was calculated from body mass index, waist circumference(WC), triglyceride, and gamma glutamyl transferase data. Logistic regression analysis was conducted to determine the association between FLI and NAFLD. The discriminatory performance of FLI in the diagnosis of NAFLD was evaluated by receiver operating characteristic analysis. Area under the curves(AUCs) and related confidence intervals were estimated. Optimal cutoff points of FLI in the diagnosis of NAFLD were determined based on the maximum values of Youden's ***: The mean age of men and women in the study population were 44.8 ± 16.8 and 43.78 ± 15.43, respectively(P = 0.0216). The prevalence of NAFLD was 40.1% in men and 44.2% in women(P < 0.0017). FLI was strongly associated with NAFLD, so that even a one unit increase in FLI increased the chance of developing NAFLD by 5.8%(OR = 1.058, 95%CI: 1.054-1.063, P < 0.0001). Although FLI showed good performance in the diagnosis of NAFLD(AUC = 0.8656(95%CI: 0.8548-0.8764), there was no significant difference with regards to WC(AUC = 0.8533, 95%CI: 0.8419-0.8646). The performance of FLI was not significantly different between men(AUC = 0.8648, 95%CI: 0.8505-0.8791) and women(AUC = 0.8682, 95%CI: 0.8513-0.8851). The highest performance with regards to age was related to the 18-39 age group(AUC = 0.8930, 95%CI: 0.8766-0.9093). The optimal cutoff points of FLI were 46.9 in men(sensitivity = 0.8242, specificity = 0.7687, Youden's index = 0.5929) and 53.8 in women(sensitivity = 0.8233, specificity = 0.7655, Youden's index = 0.5888).CONCLUSION: Although FLI had acceptable discriminatory power in the diagnosis of NAFLD, WC was a simpler and more accessible index with a similar performance.

关键词： Non-alcoholic fatty liver disease Fatty liver index Waist circumference Body mass index Optimal cuto

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Toric Realisation of Quantum Systems via Clifford Structures

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Journal of Applied Mathematics and Physics 2022年第2期10卷 527-537页

作者： Mohammed Bensed Youssef El maadi Département de Physique LabSIMO Faculté des Sciences Université Ibn Tofail Kénitra Morocco Département de Physique Equipe des Sciences de la matiére et du rayonnement ESMaR Faculté des Sciences Université Mohammed V de Rabat Rabat Morocco

We present a geometric approach to describe quantum information systems. Precisely, we elaborate a genuine correspondence between toric geometry and qubit systems using the construction of Clifford graph algebras. This mapping may be explored to investigate qubit information applications using toric geometry considered as a potent tool to understand high energy physics including black holes and string theory. Explicitly, we examine in some details the cases of two and three qubits, and we find that they are associated with certain Clifford graph structures. Mixed states are also discussed.

关键词： Qubit Information Systems Clifford Graph Algebras Toric Geometry

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Outperforming piezoelectric ultrasonics with highreliability single-membrane CMUT array elements

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Microsystems & Nanoengineering 2022年第3期8卷 61-75页

作者： Eric B.Dew Afshin Kashani llkhechi Mohammad maadi Nathaniel J.M.Haven Roger J.Zemp Department of Electrical and Computer Engineering niversty of AlbertaEdmontonCanada

It has long been hypothesized that capacitive micromachined ultrasound transducers(CMUTs)could potentially outperform piezoelectric ***,challenges with dielectric charging,operational hysteresis,and transmit sensitivity have stood as obstacles to these performance *** this paper,we introduce key architectural features to enable high-reliability CMUTs with enhanced ***,a CMUT element in an array is designed with an ensemble of smaller membranes oscillating together to transmit or detect ultrasound ***,this approach can lead to unreliable behavior and suboptimal transmit performance if these smaller membranes osilate out of phase or collapse at different *** this work,we designed CMUT array elements composed of a single long rectangular membrane,with the aim of improving the output pressure and electromechanical *** compare the performance of three different modifications of this architecture:traditional contiguous dielectric,isolated isolation post(P),and insulated electrode-post(EP)*** were designed to improve performance while also imparting robustness to charging and minimization of *** fabricate these devices,a wafer-bonding process was developed with near-100%bonding *** CMUT elements achieved electromechanical effciency values as high as 0.95,higher than values reported with either piezoelectric transducers or previous CMUT ***,all investigated CMUT architectures exhibited transmit effciency 2-3 times greater than published CMUT or piezoelectric transducer elements in the 1.5-2.0 MHz *** EP and lip CMUTs demonstrated considerable charging robustness,demonstrating minimal charging over 500,000 collapse-snap-back actuation cycles while also mitigating *** proposed approach offers significant promise for future ultrasonic applications.

关键词： piezoelectric elements bonding

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Joint Power Allocation and Beamforming for Cooperative Networks

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International Journal of Communications, Network and System Sciences 2011年第7期4卷 447-451页

作者： Sondes maadi Noureddine Hamdi 不详

In this paper, we investigate power allocation problem with the use of transmit beamforming in a dual hop MISO (multiple input single output) relay channel. We consider either amplify and forward (AF) or decode and forward (DF) cooperative protocols at the relay and optimize the power allocated to the relay and the source, under total transmit power constraint, to minimize the bit error rate (BER) of relaying system. Cooperative communication is viewed as a method for increasing diversity gain and reducing end to end path loss. The use of relay can create a virtual antenna array so that it allows users to exploit the advantages of multiple input multiple output (MIMO) techniques. In this work, we solve cooperative ratio, which is defined as the ratio power used for cooperative transmission over the total power. This approach is then compared to an equal power assignment method and its performance enhancement is verified by simulation results.

关键词： Amplify and Forward Decode and Forward Transmit Beamforming Power Allocation MISO Cooperative Communication

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