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Applied Mathematics(A Journal of Chinese Universities) 2018年第3期33卷 274-286页

作者： Hafiz Fukhar-ud-din amna kalsoom Safeer H Khan Department of Mathematics and Statistics King Fahd University of Petroleum and Minerals Department of Mathematics and Statistics International Islamic University Department of Mathematics Statistics and Physics Qatar University

We introduce a one-step implicit iterative method for two finite families of asymptotically nonexpansive mappings in a hyperbolic space and use it to approximate common fixed points of these families. The results presented in this paper are new in the setting of hyperbolic spaces. On top, these are generalizations of several results in literature from Banach spaces to hyperbolic spaces. At the end of the paper, we give an example to validate our results.

关键词： uniformly convex hyperbolic space asymptotically nonexpansive mapping common fixed point strong convergence

Metabolic dysfunction-associated fatty liver disease and low muscle strength: A comment

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World Journal of Gastroenterology 2024年第17期30卷 2371-2373页

作者： Masood Muhammad Karim amna Subhan Butt Department of Gastroenterology The Aga Khan University HospitalKarachi 74800SindhPakistan Department of Medicine Aga Khan University HospitalKarachi 74800Pakistan

The diagnosis of non-alcoholic fatty liver disease(NAFLD)and metabolic dysfunction-associated fatty liver disease only on the basis of laboratory parameter score such as Hepatic Steatosis Index which includes liver enzymes,gender,basal metabolic index,and presence of diabetic mellitus is not sufficient to exclude other causes of deranged liver enzymes especially medications and autoimmune related liver *** the guideline suggests ultrasound is the preferred first-line diagnostic procedure for imaging of NAFLD,as it provides additional diagnostic information and the combination of biomarkers/scores and transient elastography might confer additional diagnostic accuracy and evident from previous similar studies too.

关键词： Non-alcoholic fatty liver disease Metabolic dysfunction associated fatty liver disease Low muscle strength Hepatic Steatosis Index Letter to the editor

Optimized Binary Neural Networks for Road Anomaly Detection:A TinyML Approach on Edge Devices

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Computers, Materials & Continua 2024年第7期80卷 527-546页

作者： amna Khatoon Weixing Wang Asad Ullah Limin Li Mengfei Wang School of Information Engineering Chang’an UniversityXi’an710064China School of Information Engineering Xi’an Eurasia UniversityXi’an710065China School of Electrical and Electronic Engineering Wenzhou UniversityWenzhou325035China

Integrating Tiny Machine Learning(TinyML)with edge computing in remotely sensed images enhances the capabilities of road anomaly detection on a broader *** devices efficiently implement a Binary Neural Network(BNN)for road feature extraction,utilizing quantization and compression through a pruning *** modifications resulted in a 28-fold decrease in memory usage and a 25%enhancement in inference speed while only experiencing a 2.5%decrease in *** showcases its superiority over conventional detection algorithms in different road image *** constrained by computer resources and training datasets,our results indicate opportunities for future research,demonstrating that quantization and focused optimization can significantly improve machine learning models’accuracy and operational *** Cortex-M0 gives practical feasibility and substantial benefits while deploying our optimized BNN model on this low-power device:Advanced machine learning in edge *** analysis work delves into the educational significance of TinyML and its essential function in analyzing road networks using remote sensing,suggesting ways to improve smart city frameworks in road network assessment,traffic management,and autonomous vehicle navigation systems by emphasizing the importance of new technologies for maintaining and safeguarding road networks.

关键词： Edge computing remote sensing TinyML optimization BNNs road anomaly detection quantization model compression

Survey on Video Security:Examining Threats,Challenges,and Future Trends

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Computers, Materials & Continua 2024年第9期80卷 3591-3635页

作者： Ali Asghar amna Shifa Mamoona Naveed Asghar Department of Artificial Intelligence Faculty of ComputingThe Islamia University of BahawalpurBahawalpur63100Pakistan School of Computer Science College of Science and EngineeringUniversity of GalwayGalwayH91 TK33Ireland

Videos represent the most prevailing form of digital media for communication,information dissemination,and ***,theirwidespread use has increased the risks of unauthorised access andmanipulation,posing significant *** response,various protection approaches have been developed to secure,authenticate,and ensure the integrity of digital *** study provides a comprehensive survey of the challenges associated with maintaining the confidentiality,integrity,and availability of video content,and examining how it can be *** then investigates current developments in the field of video security by exploring two critical research ***,it examine the techniques used by adversaries to compromise video data and evaluate their *** these attack methodologies is crucial for developing effective defense ***,it explores the various security approaches that can be employed to protect video data,enhancing its transparency,integrity,and *** compares the effectiveness of these approaches across different use cases,including surveillance,video on demand(VoD),and medical videos related to disease ***,it identifies potential research opportunities to enhance video data protection in response to the evolving threat *** this investigation,this study aims to contribute to the ongoing efforts in securing video data,providing insights that are vital for researchers,practitioners,and policymakers dedicated to enhancing the safety and reliability of video content in our digital world.

关键词： Attacks threats security services video manipulation video security

Green Synthesis of Silver Nanoparticles Using Aqueous Orange and Lemon Peel Extract and Evaluation of Their Antimicrobial Properties

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Advances in Nanoparticles 2024年第2期13卷 11-28页

作者： Amra Bratovcic amna Dautovic Department of Physical Chemistry and Electrochemistry Faculty of Technology University of Tuzla Tuzla Bosnia and Herzegovina Multilab Tuzla Bosnia and Herzegovina

Green synthesis of silver nanoparticles (AgNPs) using aqueous extracts of orange and lemon peels, as a reducing agent, and silver nitrate salts as a source of silver ions is a promising field of research due to the versatility of biomedical applications of metal nanoparticles. In this paper, AgNPs were synthetized at different reaction parameters such as the type and concentration of the extracts, metal salt concentration, temperature, speed stirring, and pH. The antibacterial properties of the obtained silver nanoparticles against E. coli, as well as the physical and chemical characteristics of the synthesized silver nanoparticles, were investigated. UV-Vis spectroscopy was used to confirm the formation of AgNPs. In addition to green biogenic synthesis, chemical synthesis of silver nanoparticles was also carried out. The optimal temperature for extraction was 65˚C, while for the synthesis of AgNPs was 35˚C. The synthesis is carried out in an acidic environment (pH = 4.7 orange and pH = 3.8 lemon), neutral (pH = 7) and alkaline (pH = 10), then for different concentrations of silver nitrate solution (0.5 mM - 1 mM), optimal time duration of the reaction was 60 min and optimal stirring speed rotation was 250 rpm on the magnetic stirrer. The physical properties of the synthesized silver nanoparticles (conductivity, density and refractive index) were also studied, and the passage of laser light through the obtained solution and distilled water was compared. Positive inhibitory effect on the growth of new Escherichia coli colonies have shown AgNPs synthesized at a basic pH value and at a 0.1 mM AgNO3 using orange or lemon peel extract, while for a 0.5 mM AgNO3 using lemon peel extract.

关键词： Green Synthesis Silver Nanoparticles Orange and Lemon Peel Extract Antibacterial Activity Escherichia coli

SubEpiPredict:A tutorial-based primer and toolbox for fitting and forecasting growth trajectories using the ensemble n-sub-epidemic modeling framework

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Infectious Disease Modelling 2024年第2期9卷 411-436页

作者： Gerardo Chowell Sushma Dahal Amanda Bleichrodt amna Tariq James M.Hyman Ruiyan Luo Department of Population Health Sciences School of Public HealthGeorgia State UniversityAtlantaGAUSA Department of International Epidemiology and Population Studies Fogarty International CenterNational Institutes of HealthBethesdaMDUSA Department of Pediatrics School of MedicineStanford UniversityPalo AltoCAUSA Department of Mathematics Center for Computational ScienceTulane UniversityNew OrleansLAUSA

An ensemble n-sub-epidemic modeling framework that integrates sub-epidemics to capture complex temporal dynamics has demonstrated powerful forecasting capability in previous *** modeling framework can characterize complex epidemic patterns,including plateaus,epidemic resurgences,and epidemic waves characterized by multiple peaks of different *** this tutorial paper,we introduce and illustrate SubEpiPredict,a user-friendly MATLAB toolbox for fitting and forecasting time series data using an ensemble n-sub-epidemic modeling *** toolbox can be used for model fitting,forecasting,and evaluation of model performance of the calibration and forecasting periods using metrics such as the weighted interval score(WIS).We also provide a detailed description of these methods including the concept of the n-sub-epidemic model,constructing ensemble forecasts from the top-ranking models,*** the illustration of the toolbox,we utilize publicly available daily COVID-19 death data at the national level for the United *** MATLAB toolbox introduced in this paper can be very useful for a wider group of audiences,including policymakers,and can be easily utilized by those without extensive coding and modeling backgrounds.

关键词： n-Sub-epidemic model Forecasting MATLAB Sub-epidemics Phenomenological models Performance metrics Model evaluation

Enzyme engineering in microbial biosynthesis of terpenoids:progress and perspectives

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生物工程学报 2024年第8期40卷 2473-2488页

作者： amna Bibi SU Liqiu DAI Zongjie WANG Qinhong Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China National Center of Technology Innovation for Synthetic Biology Tianjin 300308China University of Chinese Academy of Science Beijing 100049China

Terpenoids,known for their structural and functional diversity,are highly valued,especially in food,cosmetics,and cleaning *** biosynthesis has emerged as a sustainable and environmentally friendly approach for the production of ***,the natural enzymes involved in the synthesis of terpenoids have problems such as low activity,poor specificity,and insufficient stability,which limit the biosynthesis *** engineering plays a pivotal role in the microbial synthesis of *** modifying the structures and functions of key enzymes,researchers have significantly improved the catalytic activity,specificity,and stability of enzymes related to terpenoid synthesis,providing strong support for the sustainable production of *** article reviews the strategies for the modification of key enzymes in microbial synthesis of terpenoids,including improving enzyme activity and stability,changing specificity,and promoting mass transfer through multi-enzyme ***,this article looks forward to the challenges and development directions of enzyme engineering in the microbial synthesis of terpenoids.

关键词： terpenoids microbial synthesis enzyme engineering enzyme modification terpene synthases

Impact of index admission cholecystectomy vs interval cholecystectomy on readmission rate in acute cholangitis: National Readmission Database survey

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World Journal of Gastrointestinal Endoscopy 2024年第6期16卷 350-360页

作者： Abdullah Sohail Ahmed Shehadah Ammad Chaudhary Khadija Naseem amna Iqbal Ahmad Khan Shailendra Singh Department of Internal Medicine University of Iowa Roy J and Lucille A Carver College of MedicineIowaIA 52242United States Department of Internal Medicine Rochester General HospitalRochesterNY 14621United States Department of Internal Medicine Henry Ford HospitalDetroitMI 48202United States Department of Internal Medicine Cleveland Clinic FoundationClevelandOH 44195-0001United States Department of Internal Medicine University of ToledoToledoOH 43606United States Department of Gastroenterology and Hepatology Case Western Reserve University HospitalClevelandOH 44106United States Division of Gastroenterology and Hepatology West Virginia University School of MedicineMorgantownWV 26505United States

BACKGROUND Elective cholecystectomy(CCY)is recommended for patients with gallstone-related acute cholangitis(AC)following endoscopic decompression to prevent recurrent biliary ***,the optimal timing and implications of CCY remain *** To examine the impact of same-admission CCY compared to interval CCY on patients with gallstone-related AC using the National Readmission Database(NRD).METHODS We queried the NRD to identify all gallstone-related AC hospitalizations in adult patients with and without the same admission CCY between 2016 and *** primary outcome was all-cause 30-d readmission rates,and secondary outcomes included in-hospital mortality,length of stay(LOS),and hospitalization *** Among the 124964 gallstone-related AC hospitalizations,only 14.67%underwent the same admission *** all-cause 30-d readmissions in the same admission CCY group were almost half that of the non-CCY group(5.56%vs 11.50%).Patients in the same admission CCY group had a longer mean LOS and higher hospitalization costs attrib-utable to *** the most common reason for readmission was sepsis in both groups,the second most common reason was AC in the interval CCY *** Our study suggests that patients with gallstone-related AC who do not undergo the same admission CCY have twice the risk of readmission compared to those who undergo CCY during the same *** readmis-sions can potentially be prevented by performing same-admission CCY in appropriate patients,which may reduce subsequent hospitalization costs secondary to readmissions.

关键词： Acute cholangitis Gallstone-related complications National Readmission Database 30-d readmission rates Resource utilization In-hospital mortality

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倍半萜类化合物生物学活性研究进展

中国实验方剂学杂志 2024年第5期30卷 289-298页

作者：杨立苑程菊陈建军陈晓峥石小艺 Rasheed amna 史文静刘秀珠谢小冬甘肃中医药大学兰州730000 兰州大学基础医学院遗传学研究所兰州730000 兰州大学功能有机分子化学国家重点实验室兰州730000

倍半萜化合物是由15个碳原子组成的天然存在的化合物,按照含氧基团可分为倍半萜醇、酮、内酯、醛、羧酸等,该化合物在自然界中分布广泛,其生理活性也多种多样,例如在抗肿瘤方面,发现了很多具有潜在抗癌作用的倍半萜类化合物,包括细胞毒... 详细信息

倍半萜化合物是由15个碳原子组成的天然存在的化合物,按照含氧基团可分为倍半萜醇、酮、内酯、醛、羧酸等,该化合物在自然界中分布广泛,其生理活性也多种多样,例如在抗肿瘤方面,发现了很多具有潜在抗癌作用的倍半萜类化合物,包括细胞毒、抗氧化、免疫调节、细胞增殖等。此外,一些倍半萜类化合物在抗菌、抗炎和抗心血管疾病等方面也有较好的应用前景。恶性肿瘤、炎症、细菌性疾病与心血管疾病都是导致人类死亡的主要疾病,而天然产物对治疗这些疾病都有独到的优势,因此,开发新的易于推广的药物成为新的研究热点。该文针对具有抗肿瘤、抗炎、抗菌及抗心血管疾病活性,在中草药和植物天然成分,如菊科苍耳属、苍术属、旋复花属、云木香属、地胆草属、蒿属、千里光属、橐吾属,唇形科薄荷属、地笋属,姜科姜黄属、姜属等中草药和植物中提取出来的倍半萜化合物,综述了该化合物的生物学活性及其相关机制,为倍半萜的进一步研究和临床合理应用提供参考依据。

关键词：倍半萜类化合物中药天然化合物生物学活性机制

Allogenic Stem Cell Transplantation and COVID-19 Antibodies: Mechanistic Insights and Recipient Concerns

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Open Journal of Immunology 2024年第2期14卷 16-32页

作者： amna Umer Asma Umer Khayam Nasar Khan David Lawrence Greene Umm E. Habiba Sabiha Shamim Pak-American Hospital Pvt. Ltd. Islamabad Pakistan R3 Medical Research LLC Scottsdale USA Bello Bio Labs and Therapeutics (SMC) Pvt. Ltd. Islamabad Pakistan Department of Biochemistry Rawalpindi Medical University Rawalpindi Pakistan Bello Bio LLC Scottsdale USA

Collecting umbilical cord stem cells is widely practiced due to its numerous benefits. Over the past decade, umbilical cord stem cells (UCSCs) have shown effectiveness in treating various conditions, such as bone pathologies, neuropsychiatry disorders, hereditary diseases, and metabolic disorders. However, factors like immunization affect the quantity and quality of cord harvesting. Studies suggest that antibodies from the mother pass through the umbilical cord to protect the infant against infections. Cleaning the umbilical cord before stem cell extraction is crucial to maintain sterility and cell integrity. Vaccinating a female donor, including for COVID-19, typically does not directly affect the stem cells. Although vaccines aim to trigger an immunological response, they generally do not affect the donor’s stem cells.

关键词： Vaccination Stem Cell Allogeneic COVID Antibodies