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Gastroenterology Report 2021年第3期9卷 276-278,I0003页

作者： Nauroz Syed Meeta Desai Deborah Bethards sanam razeghi Kofi Clarke Division of Gastroenterology and Hepatology Penn State Milton S.Hershey Medical CenterHersheyPAUSA

Introduction The global healthcare community has been confronted with challenges in providing patient care in a manner that limits the risk of patient and provider exposure during the COVID-19 *** has resulted in sign... 详细信息

关键词：远程医疗医疗费用消化科

Numerical study of axial-loaded circular concrete-filled aluminum tubular slender columns

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Frontiers of Structural and Civil Engineering 2024年第2期18卷 272-293页

作者： Xudong CHEN Jeung-Hwan DOH sanam AGHDAMY School of Engineering and Built Environment Griffith University Gold Coast CampusBrisbaneQLD 4222Australia

Aluminum alloys have been widely applied in coastal and marine structures because of their superior sustainability and corrosion ***-filled double-skin aluminum tubular columns(CFDAT)possess higher strength and better ductility than traditional reinforced concrete ***,few studies have been conducted on numerical simulation methods for circular ***,there has been no experimental or numerical study on intermediate-to-slender circular ***,a comprehensive numerical study was conducted on a modeling method for the first time to simulate the axial behavior of a slender circular *** study outlines the development of numerical modeling techniques and presents a series of comparative studies using various material nonlinearities,confinement effects,and nonlinearity of the initial geometric imperfections for a slender *** numerical results were compared with more than 80 previously available stub and slender experimental test results for *** was confirmed that the proposed numerical technique was reliable and accurate for simulating the axial behavior of intermediate and slender circular ***,a parametric study was conducted to investigate the effects of geometric and material properties on the axial capacity of the ***,the slenderness and strength-to-width ratio of CFDAT were compared with those of concrete-filled double-skin steel tubular columns(CFDST).The simulated axial strengths were compared with those predicted using AS 5100 and AISC *** design equations for the CFDATs should be proposed based on AS 5100.

关键词： axial behavior aluminum concrete-filled double-skin slender columns numerical modelling

Non-Associative Algebra Redesigning Block Cipher with Color Image Encryption

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Computers, Materials & Continua 2021年第4期67卷 1-21页

作者： Nazli sanam Asif Ali Tariq Shah Ghazanfar Farooq Department of Mathematics Quaid-i-Azam UniversityIslamabad44000Pakistan Department of Computer Science Quaid-i-Azam UniversityIslamabad44000Pakistan

The substitution box(S-box)is a fundamentally important component of symmetric key *** S-box is a primary source of non-linearity in modern block ciphers,and it resists the linear *** approaches have been adopted to construct S-boxes.S-boxes are commonly constructed over commutative and associative algebraic structures including Galois fields,unitary commutative rings and cyclic and non-cyclic finite *** this paper,first a non-associative ring of order 512 is obtained by using computational techniques,and then by this ring a triplet of 8×8 S-boxes is *** motivation behind the designing of these S-boxes is to upsurge the robustness and broaden the key space due to non-associative and noncommutative behavior of the algebraic structure under consideration.A novel color image encryption application is anticipated in which initially these 3 S-boxes are being used to produce confusion in three layers of a standard RGB ***,for the sake of diffusion 3D Arnold chaotic map is used in the proposed encryption scheme.A comparison with some of existing chaos and S-box dependent color image encryption schemes specs the performance results of the anticipated RGB image encryption and observed as approaching the standard prime level.

关键词： Block cipher s-box nonlinearity color image encryption 3D chaotic map

Evaluation of the parameters affecting the roughness coefficient of sewer pipes with rigid and loose boundary conditions via kernel based approaches

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International Journal of Sediment Research 2020年第2期35卷 171-179页

作者： Kiyoumars Roushangar Roghayeh Ghasempour sanam Biukaghazadeh Department of Water Resource Engineering Faculty of Civil EngineeringUniversity of Tabriz Center of Excellence in Hydroinformatics University of Tabriz

One of the important issues in water transport and sewer systems is determining the flow resistance and roughness *** accurate estimation of the roughness coefficient is a substantial issue in the design and operation of hydraulic structures such as sewer pipes,the calculation of water depth and flow velocity,and the accurate characterization of energy *** current study,applies two kernel based approaches [Support Vector Machine(SVM) and Gaussian Process Regression(GPR)] to develop roughness coefficient models for sewer *** the modeling process,two types of sewer bed conditions were considered:loose bed and rigid *** order to develop the models,different input combinations were considered under three scenarios(Scenario 1:based on hydraulic characteristics,Scenarios2 and 3:based on hydraulic and sediment characteristics with and without considering sediment concentration as input).The results proved the capability of the kernel based approaches in prediction of the roughness coefficient and it was found that for prediction of this parameter in sewer pipes Scenario 3 performed better than Scenarios 1 and ***,the sensitivity analysis results showed that Dgr(Dimensionless particle number) for a rigid bed and wb/y(ratio of deposited bed width,wb,to flow depth,y) for a loose bed had the most significant impact on the modeling process.

关键词： Gaussian process regression Loose bed Rigid bed Roughness coefficient Sewer pipes Support vector machine

A Survey of Complementary and Alternative Medicine in Iran

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Chinese Journal of Integrative Medicine 2012年第6期18卷 409-416页

作者： Hassan Abolhassani Mohsen Naseri sanam Mahmoudzadeh Department of Comple-mentary alternative medicine Tehran University of Medical SciencesTehranIran Complementary Alternative Medicine Research Group Student Research InstituteTehran University of Medical SciencesTehranIran Research fellow Tehran University of Medical SciencesTehranIran

Objective： To survey the use, capability and satisfaction of complementary and alternative medicine （CAM） in comparison with conventional medicine in Iran. Methods： In this national survey, a cross-sectional study was designed, 5,000 people were surveyed to identify predictors of Iranian traditional medicine （ITM） use compared with conventional medicine. Data were collected through a questionnaire that covered three different predictor categories： demographic information, patient＇s viewpoint, and patients＇ experiences. Results： Most of the participants preferred government owned hospitals rather than other places. Praying for one＇s own health was the most frequent and favorable ITM domain （P=0.017） based on patients＇ interests, both in low- （P=0.08） and high- level （P=0.011） educated subjects. Among the participants, 97.8% had previous conventional medicine history due to their chronic diseases Conclusions： Iranianpatients resort to ITM as a choice at the late stage of the disease. Current deficiency in integration of CAM and conventional medicine is in contrast to the increasing demand on patients＇ side. Health care organizers should be facilitating the CAM services by tuition of CAM practitioners and supporting eligible CAM centers for diagnosis and treatment of patients.

关键词： effectiveness complementary and alternative medicine conventional medicine

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The translational importance of establishing biomarkers of human spinal cord injury

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Neural Regeneration Research 2017年第3期12卷 385-388页

作者： sanam Salimi Elizei Brian K.Kwon International Collaboration on Repair Discoveries(ICORD) University of British ColumbiaBCCanada Vancouver Spine Surgery Institute Department of OrthopaedicsUniversity of British ColumbiaBCCanada

The evaluation of such novel therapies for acute spinal cord injury in clinical trials is extremely *** current dependence upon the clinical assessment of neurologic impairment renders many acute SCI patients ineligible for trials because they are not ***,the difficulty in predicting neurologic recovery based on the early clinical assessment forces investigators to recruit large cohorts to have sufficient *** that objectively classify injury severity and better predict neurologic outcome would be valuable tools for translational *** such,the objective of the present review was to describe some of the translational challenges in acute spinal cord injury research and examine the potential utility of neurochemical biomarkers found within cerebrospinal fluid and *** focus on published efforts to establish biological markers for accurately classifying injury severity and precisely predict neurological outcome.

关键词： spinal cord injury, biomarkers, cerebrospinal fluid, injury severity neurological recovery

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Characterization of lipid parameters in diabetic and non-diabetic atherosclerotic patients

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Journal of Geriatric Cardiology 2015年第1期12卷 37-43页

作者： Fatima Ali Hassan Jamil sanam Saiqa Anwar Nadia Wajid Institute of Molecular Biology and Biotechnology (IMBB) & Centre for Research in Molecular Medicine (CRIMM) University of Lahore 1-Kin Defence Road Lahore Pakistan

Background ＆ Objective The relationship between lipid profile perturbation and diabetes associated complications has long been an area of interest. Dyslipidemia is a potent predictor of cardiovascular morbidity and mortality in diabetic patients. The aim of present study was to investigate relationship between aging and lipid profiles in diabetic and non-diabetic atherosclerotie patients. Methods Five hundred and seventy six individuals （45-75 year age） participated in this study. Among these, 192 were having history of diabetes mellitus and atherosclerosis. Individuals are categorized on the base of health （normal, non-diabetic atheroselerosis, diabetic atherosclerosis） and age （45-55 years, 56~55 years, and 66-75 years）. All the participants were subjected to the procedures like a detailed history, biochemical analysis for fasting blood sugar, hemoglobin Alc, total cholesterol （TC）, triglycerides （TG）, low-density lipoprotein-（LDL）, very low-density lipoprotein （VLDL） and high-density lipoprotein （HDL）. All these parameters were compared between diabetic and non-diabetic atherosclerotic patients of all three age groups. TC/HDL and LDL/HDL were also calculated. Results Diabetic atherosclerotic individuals （both males and females） had high level of TC, TG, LDL, VLDL and low level of HDL in comparison to non-diabetic atherosclerotie and normal control individuals. Among all three age groups, lipoprotein abnormality was observed to be more frequent in females than males. There was a significant increase in TC/HDL and LDL/HDL ratio in diabetic atherosclerotic subjects compared to age and sex matched non-diabetic atherosclerotic and normal control. Conclusions Degree of dyslipidemia increases with increase in age in both genders. Female are more prone to diabetic dyslipidemia and hence have more risk of developing atherosclerosis with increasing age.

关键词： Aging Atherosclerosis Diabetes Dyslipidemia

An Analysis of Social Vulnerability to Natural Hazards in Nepal Using a Modified Social Vulnerability Index

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International Journal of Disaster Risk Science 2019年第1期10卷 103-116页

作者： sanam K.Aksha Luke Juran Lynn M.Resler Yang Zhang Department of Geography Virginia Tech Virginia Water Resources Research Center Virginia Tech Urban Affairs and Planning Virginia Tech

Social vulnerability influences the ability to prepare for, respond to, and recover from disasters. The identification of vulnerable populations and factors that contribute to their vulnerability are crucial for effective disaster risk reduction. Nepal exhibits multihazard risk and has experienced socioeconomic and political upheaval in recent decades, further increasing susceptibility to ***, we still know little regarding social vulnerability in Nepal. Here, we investigate social vulnerability in Nepal by adapting Social Vulnerability Index(SoVI) methods to the Nepali context. Variables such as caste, and populations who cannot speak/understand Nepali were added to reflect the essence of the Nepali context. Using principal component analysis, 39 variables were reduced to seven factors that explained 63.02% of variance in the *** scores were summarized to calculate final SoVI scores. The highest levels of social vulnerability are concentrated in the central and western Mountain, western Hill, and central and eastern Tarai regions of Nepal, while the least vulnerable areas are in the central and eastern Hill regions. These findings, supplemented with smaller-scale analyses, have the potential to assist village officers, policymakers,and emergency managers in the development of more effective and geographically targeted disaster management programs.

关键词： Disaster risk reduction Natural hazards Nepal Principal component analysis Social Vulnerability Index

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2q37.3 Deletion with Complex Heart Defects Suggesting Interruption of Early Ventricular Looping

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Congenital Heart Disease 2022年第2期17卷 141-146页

作者： sanam Safi Takato Yamasaki David JGlidden Stephen PSanders Chrystalle Katte Carreon The Cardiac Registry Departments of CardiologyPathologyand Cardiac SurgeryBoston Children’s HospitalBostonUSA Department of Cardiology Gentofte University HospitalCopenhagenDenmark Department of Thoracic and Cardiovascular Surgery Mie University Graduate School of MedicineMieJapan Department of Pathology Cascade Pathology Services/Legacy HealthPortlandUSA Department of Pediatrics Boston Children’s Hospital and Harvard Medical SchoolBostonUSA Department of Pathology Boston Children’s Hospital and Harvard Medical SchoolBostonUSA

A maternally inherited 828 kb microdeletion of 2q37.3 manifested in a 3-week-old premature boy as left juxtaposition of the atrial appendages associated with tricuspid atresia,double outlet infundibulum,subvalvar pulmonary atresia,large secundum atrial septal defect,and right aortic arch with mirror-image branching,consistent with developmental arrest early in heart *** the best of our knowledge,no previous 2q37 deletion syndrome has been reported with such a severe cardiac ***,this case adds to the cardiac phenotypes identified in 2q37 deletion syndrome.

关键词： 2q37.3 deletion tricuspid atresia double outlet infundibulum juxtaposition of the atrial appendages right aortic arch subvalvar pulmonary atresia

Cogent and Energy Efficient Authentication Protocol for WSN in IoT

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Computers, Materials & Continua 2021年第8期68卷 1877-1898页

作者： Tariq Mahmood Butt Rabia Riaz Chinmay Chakraborty sanam Shahla Rizvi Anand Paul Department of CS&IT University of Azad Jammu and KashmirMuzaffarabad13100Pakistan Birla Institute of Technology MesraJharkhand814142India Raptor Interactive(Pty)Ltd. Eco BoulevardWitch Hazel AveCenturion0157South Africa The School of Computer Science and Engineering Kyungpook National UniversityDaegu41566Korea

Given the accelerating development of Internet of things(IoT),a secure and robust authentication mechanism is urgently required as a critical architectural *** IoT has improved the quality of everyday life for numerous people in many *** to the predominantly wireless nature of the IoT,connected devices are more vulnerable to security threats compared to wired *** authentication is thus of utmost importance in terms of security on the *** authentication protocols have been proposed in recent years,but most prior schemes do not provide sufficient security for these wireless *** overcome the limitations of previous schemes,we propose an efficient and lightweight authentication scheme called the Cogent Biometric-Based Authentication Scheme(COBBAS).The proposed scheme is based on biometric data,and uses lightweight operations to enhance the efficiency of the network in terms of time,storage,and battery consumption.A formal security analysis of COBBAS using Burrows–Abadi–Needham logic proves that the proposed protocol provides secure mutual *** security verification using the Automated Validation of Internet Security Protocols and Applications tool shows that the proposed protocol is safe against man-in-the-middle and replay *** security analysis further shows that COBBAS protects wireless sensor networks against several security attacks such as password guessing,impersonation,stolen verifier attacks,denial-of-service attacks,and errors in biometric *** protocol also provides user anonymity,confidentiality,integrity,and biometric recovery in acceptable time with reasonable computational cost.

关键词： Internet of things wireless sensor networks authentication Burrows-Abadi-Needham logic fuzzy extractor elliptic curve cryptography