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Depressive disorders in patients with epilepsy: Why should neurologists care?

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Health 2013年第6期5卷 14-20页

作者： Taoufik Alsaadi Khalid Zamel ahmed sameer Waseem Fathalla Iyad Koudier Emirates League Against Epilepsy (ELAE) Sheikh Khalifa Medical City Abu Dhabi UAE

Epilepsy is a complex disorder that is commonly associated with brain dysfunction, social isolation, and vocational difficulty. Each of these factors may contribute to the increased prevalence of psychiatric illness in epilepsy, but emerging evidence is providing a more complete and clearer elucidation of the problem. Clinical investigations have consistently demonstrated that depression has a large impact on subjective health status. In patients with recurrent seizures, depression appears to have a stronger association with quality of life than does the seizure rate. In fact, depression is second only to medication toxicity as the clinical factor that explains the greatest variance in quality of life. Only a small number of studies have investigated the plausible neurobiological mechanisms of depression in epilepsy, but preliminary data suggest that underlying brain dysfunction may be a more important predictor than vocational or social disability. Furthermore, specific aspects of hippocampal dysfunction may be a causal factor in the genesis and maintenance of depression in temporal lobe epilepsy. Current treatment recommendations for depression in epilepsy are similar to those for otherwise neurologically normal depressed patients, emphasizing the role of serotonin reuptake inhibitors, but certain antidepressants should be used with caution. Ongoing studies are attempting to define optimal treatment strategies, and more definitive data to guide clinical management are expected to become available in the near future.

关键词： Depression Seizures Temporal Lobe Epilepsy Quality of Life Serotonin Reuptake Inhibitors (SSRIs)

MDCT imaging following nephrectomy for renal cell carcinoma: Protocol optimization and patterns of tumor recurrence

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World Journal of Radiology 2013年第11期5卷 436-445页

作者： Stephanie F Coquia Pamela T Johnson sameer ahmed Elliot K Fishman Department of Radiology Johns HopkinsHospital

The purpose of this pictorial essay is to review the common and uncommon sites of renal cell carcinoma recurrence throughout the body by examining their appearances on computerized tomography(CT). CT imaging protocols will be discussed. The sites of recurrence have been categorized into 4 groups: chest and mediastinum, abdomen and pelvis, musculoskeletal, and neurological. For each site of recurrence, a representative CT image correlate with discussion is provided. The unique CT appearance of renal cell carcinoma recurrence and how it can be used in lesion detection will be discussed. Renal cell carcinoma recurrences are hypervascular like the primary tumor, which can aid in not only lesion detection but also in some cases, differentiation from other primary tumors. Through CT case review of various sites of recurrence, lesions are shown to be easily seen on arterial phase while sometimes being nearly inconspicuous on venous or delayed phases. Coronal and sagittal reconstructions can also improve diagnostic sensitivity. CT is the most commonly used imaging tool for surveillance of renal cell carcinoma recurrence after nephrectomy. Knowledge of sites of recurrence as well as the utility of arterial phase imaging and multiplanar reconstructions will aid in optimizing detection of disease recurrence.

关键词： Renal cell carcinoma Recurrence CT Metastasis Diagnosis

Prevalence of unsuspected thyroid nodules in adults on contrast enhanced 16-and 64-MDCT of the chest

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World Journal of Radiology 2012年第7期4卷 311-317页

作者： sameer ahmed Pamela T Johnson Karen M Horton Atif Zaheer Saline Tsai Elliot K Fishman Russell H Morgan Department of Radiology and Radiological Science Johns Hopkins Hospital Baltimore MD 21212 United States

AIM: To determine the prevalence of unsuspected thyroid nodules on contrast enhanced 16and 64-modified discrete cosine transform (MDCT) of the chest, in a population of adult outpatients imaged for indications other than thyroid disease. METHODS: This retrospective study involved review of intravascular contrast-enhanced MDCT scans of the chest from 3077 consecutive adult outpatients, to identify unsuspected thyroid nodules. Exclusion criteria included history of thyroid cancer, known thyroid nodules or thyroid disease and risk factors for thyroid cancer, as evidenced by their medical records. One of 9 radiologists recorded number of nodules, location and bidirectional measurement of largest nodule, as well as amount of thyroid visualized on the chest computed tomography (CT). Presence of nodule was correlated with age, gender, race and percentage of thyroid imaged. RESULTS: A total of 2510 (2510/3077 or 81.6%) study subjects were included in the data analysis; among them,one or more nodules were identified in 629 subjects (629/2510 or 25.1%), with 242 (242/629 or 38.5%) having multiple nodules. Patients with nodule(s) were significantly older than those without (64 ± 13 years vs 58 ± 14 years, P < 0.0001), and female gender was associated with presence of nodule(s) (373/1222 or 30.5% vs 256/1288 or 19.9%, P < 0.0001). Women were also more likely having multiple nodules (167/373 or 44.8%) compared to men (75/256 or 29.3%, P < 0.0001). The majority of nodules (427/629 or 67.9%) were less than 1 cm. CONCLUSION: This retrospective review revealed a prevalence of 25.1% for unsuspected thyroid nodules on contrast-enhanced chest CT.

关键词： Thyroid nodule Thyroid cancer Multidetector cosine transform Incidental finding Chest computed tomography

Modular Multilevel Converter with Wireless Magnetic Power Decoupling for Three-phase MV Adjustable-speed Drives

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CSEE Journal of Power and Energy Systems 2022年第5期8卷 1497-1507页

作者： Mohamed Atef Tawfik Mohammad sameer Irfan Ashraf ahmed Joung-Hu Park Department of Electrical Engineering Soongsil UniversitySeoul 156-743South Korea

In this paper,we propose a modular multilevel converter(MMC)with a wireless magnetic power decoupling approach suitable for medium-voltage high-power variable-speed machine *** proposed power decoupling approach is independent of the operating frequency,which solves the issue of wide fluctuations of low-frequency voltage ripple components in submodule(SM)capacitors,especially at low-speed operations without using any ripple power *** wireless magnetic elements reduces the amount of high-voltage insulation between the transformer windings,resulting in a significant reduction in the overall size of the *** basic idea of our proposed approach is to magnetically couple the instantaneous three-phase ripple power of each of the three adjacent-arm *** proposed MMC is free from low-frequency capacitors,resulting in enhanced system reliability,volume,and *** operation principles of the proposed MMC are explained,and a control design is *** performance of the proposed scheme was verified via simulation and experimental tests.

关键词： Modular multilevel converter power decoupling submodule capacitor voltage ripple variable-speed drives wireless high-frequency transformer

＇Runs＇ from a run： A case of exercise induced ischemic colitis

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World Journal of Emergency Medicine 2017年第4期8卷 302-304页

作者： ahmed Faress sameer Masood ahmed Mian Department of Medicine University of British Columbia Vancouver Canada Division of Emergency Medicine the Department of Medicine University of Toronto Toronto Canada Harvard School of Public Health Harvard University Boston USA Department of Community and Family Medicine University of Toronto Toronto Canada University Health Network Toronto ON Canada

Marathon running is a strenuous activity that placesstress on the gastrointestinal system.[1] In fact, 30% to81% of runners report gastrointestinal complaints, whichinclude bloating, abdominal cramps, rectal incontine... 详细信息

关键词： Marathon running strenuous activity placesstress

Feinberg-Horodecki Exact Momentum States of Improved Deformed Exponential-Type Potential

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Journal of Applied Mathematics and Physics 2020年第8期8卷 1496-1506页

作者： Mahmoud Farout ahmed Bassalat sameer M. Ikhdair Department of Physics An-Najah National University Nablus Palestine Department of Electrical Engineering Near East University Mersin Turkey

We obtain the quantized momentum eigenvalues, Pn, and the momentum eigenstates for the space-like Schrodinger equation, the Feinberg-Horodecki equation, with the improved deformed exponential-type potential which is constructed by temporal counterpart of the spatial form of these potentials. We also plot the variations of the improved deformed exponential-type potential with its momentum eigenvalues for few quantized states against the screening parameter.

关键词： Quantized Momentum States Feinberg-Horodecki Equation The Time-Dependent Improved Deformed Exponential-Type Potential

Exact Quantized Momentum Eigenvalues and Eigenstates of a General Potential Model

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Journal of Applied Mathematics and Physics 2020年第7期8卷 1434-1447页

作者： Mahmoud Farout ahmed Bassalat sameer M. Ikhdair Department of Physics An-Najah National University Nablus Palestine Department of Electrical Engineering Near East University Nicosia Northern Cyprus Turkey

We obtain the quantized momentum eigenvalues, Pn, and the momentum eigenstates for the space-like Schrödinger equation, the Feinberg-Horodecki equation, with the general potential which is constructed by the temporal counterpart of the spatial form of these potentials. The present work is illustrated with two special cases of the general form: time-dependent Wei-Hua Oscillator and time-dependent Manning-Rosen potential. We also plot the variations of the general molecular potential with its two special cases and their momentum states for few quantized states against the screening parameter.

关键词： Bound States Feinberg-Horodecki Equation The Time-Dependent General Potential Time-Dependent Wei-Hua Oscillator Time-Dependent Manning-Rosen Potential

Brain Tumor Auto-Segmentation on Multimodal Imaging Modalities Using Deep Neural Network

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Computers, Materials & Continua 2022年第9期72卷 4509-4523页

作者： Elias Hossain Md.Shazzad Hossain Md.Selim Hossain Sabila Al Jannat Moontahina Huda sameer Alsharif Osama S.Faragallah Mahmoud M.A.Eid ahmed Nabih Zaki Rashed Department of Software Engineering Daffodil International UniversityDhaka 1207Bangladesh Department of Computing and Information System Daffodil International UniversityDhaka 1207Bangladesh Department of Computer Science&Engineering BRAC UniversityDhaka 1212Bangladesh Department of Information and Communication Engineering Bangladesh University of Professionals(BUP)Dhaka 1216Bangladesh Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Electrical Engineering College of EngineeringTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Electronics and Electrical Communications Engineering Department Faculty of Electronic EngineeringMenouf 32951Egypt

Due to the difficulties of brain tumor segmentation, this paper proposes a strategy for extracting brain tumors from three-dimensional MagneticResonance Image (MRI) and Computed Tomography (CT) scans utilizing3D U-Net Design and ResNet50, taken after by conventional classificationstrategies. In this inquire, the ResNet50 picked up accuracy with 98.96%, andthe 3D U-Net scored 97.99% among the different methods of deep *** is to be mentioned that traditional Convolutional Neural Network (CNN)gives 97.90% accuracy on top of the 3D MRI. In expansion, the imagefusion approach combines the multimodal images and makes a fused image toextricate more highlights from the medical images. Other than that, we haveidentified the loss function by utilizing several dice measurements approachand received Dice Result on top of a specific test case. The average mean scoreof dice coefficient and soft dice loss for three test cases was 0.0980. At thesame time, for two test cases, the sensitivity and specification were recordedto be 0.0211 and 0.5867 using patch level predictions. On the other hand,a software integration pipeline was integrated to deploy the concentratedmodel into the webserver for accessing it from the software system using theRepresentational state transfer (REST) API. Eventually, the suggested modelswere validated through the Area Under the Curve–Receiver CharacteristicOperator (AUC–ROC) curve and Confusion Matrix and compared with theexisting research articles to understand the underlying problem. ThroughComparative Analysis, we have extracted meaningful insights regarding braintumour segmentation and figured out potential gaps. Nevertheless, the proposed model can be adjustable in daily life and the healthcare domain to identify the infected regions and cancer of the brain through various imagingmodalities.

关键词： Brain cancer segmentation 3D U-Net ResNet50 Dice measurement ROC-AUC

Socio-Economic and Environmental Impacts Assessment of Using Different Rainwater Harvesting Techniques in Sarida Catchment, West Bank, Palestine

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Journal of Geographical Research 2020年第2期3卷 1-5页

作者： Marwan Ghaleb Ghanem Wasim ahmed sameer Shadeed Michel Riksen Birzeit University Palestinian Ministry of Health RamallahPalestinian An-Najah National University NablusPalestinian Wageningen University&Research WageningenNetherlands

A statistically representative questionnaire targeted people using rainwater harvesting(RWH)techniques in rural communities of Sarida catchment,West Bank,Palestine was distributed and *** main objective of this study is to assess the social,economic,and environmental impacts of adopting RWH techniques(***,concrete and clay ponds,Wadi ponds,earth dams,and stone terraces)in different uses to increase water *** results showed a simple sharing of the female component among beneficiaries,while concrete ponds and cisterns were the most used ***,social impacts were noticeable by sharing the same RWH structure and reflected to responsibility skills and role exchange *** the other hand,RWH techniques showed a significant economic impact for end users represented by enhancing domestic,agricultural,and recreational activities leading to good profit *** addition to food security as output,the most important environmental impact was water wasting prevention,which in turn could be linked to sustainable water management and considered as universal challenge for future generations.

关键词： Rainwater harvesting Social Economic Environment Food security Sarida West Bank Palestine