检索结果-南通市图书馆

Cold plasma-induced effects on electromagnetic wave scattering in waveguides:a mode-matching analysis

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第3期76卷 144-156页

作者： Shahana Rizvi Muhammad afzal Department of Mathematics Capital University of Science and TechnologyIslamabadPakistan

This article presents advancements in an analytical mode-matching technique for studying electromagnetic wave propagation in a parallel-plate metallic rectangular *** technique involves projecting the solution onto basis functions and solving linear algebraic systems to determine scattering *** accuracy of this method is validated via numerical assessments,which involve the reconstruction of matching conditions and conservation *** study highlights the impact of geometric and material variations on reflection and transmission phenomena in the waveguide.

关键词： electromagnetic waves scattering cold plasma metallic conducting mode-matching technique

β-Ga_(2)O_(3) nanowires and thin films for metal oxide semiconductor gas sensors:Sensing mechanisms and performance enhancement strategies

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2019年第4期5卷 542-557页

作者： Adeel afzal Dipartimento di Chimica Universita degli Studi di Bari“Aldo Moro”Via Orabona 470126BariItaly Department of Chemistry College of ScienceUniversity of Hafr Al BatinPO Box 1803Hafr Al Batin39524Saudi Arabia

The reliable,selective,and fast detection of the inorganic and organic gases in indoor and outdoor air and industrial processes is a huge challenge for environmental sustainability,healthier life,and disease control and *** oxides have been frequently explored as highly sensitive receptor elements in the electronic gas sensors since the *** oxide(Ga_(2)O_(3)),often recognized as one of the widest-bandgap semiconductors,has shown tremendous potential as the inorganic gas receptor because of its extraordinary chemical and thermal stability,and excellent electronic *** article presents a comprehensive reference on the electrical properties,historical developments,detection mechanisms,and gas sensing performance of Ga_(2)O_(3) nanowires and composite *** particular,the relationships between composition,nanostructure,and gas sensing properties of galliumcontaining oxidic nanomaterials such as β-Ga_(2)O_(3) nanowires,surface-modified Ga_(2)O_(3),metal-doped Ga_(2)O_(3) or Ga-doped metal oxides,and Ga_(2)O_(3)/metal oxide composite heterostructures are *** applications of Ga_(2)O_(3) gas sensors are discussed with an emphasis on their practical limitations such as high-temperature operation,power consumption,and miniaturization ***,future research directions and potential developments are suggested.

关键词： β-Ga_(2)O_(3)nanowires Gas sensors Nanomaterials Semiconductors Sensing mechanisms Thin films

Gender disparities and woman-specific trends in Barrett’s esophagus in the United States:An 11-year nationwide populationbased study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Methodology 2025年第1期15卷 60-71页

作者： Karina Fatakhova Faisal Inayat Hassam Ali Pratik Patel Attiq Ur Rehman Arslan afzal Muhammad Sarfraz Shiza Sarfraz Gul Nawaz Ahtshamullah Chaudhry Rubaid Dhillon Arthur Dilibe Benjamin Glazebnik Lindsey Jones Emily Glazer Division of Gastroenterology and Hepatology Mather Hospital and Zucker School of Medicine at Hofstra UniversityPort JeffersonNY 11777United States Department of Internal Medicine Allama Iqbal Medical CollegeLahorePunjab 54550Pakistan Division of Gastroenterology and Hepatology East Carolina University Brody School of MedicineGreenvilleNC 27834United States Division of Gastroenterology and Hepatology Geisinger Wyoming Valley Medical CenterWilkes-BarrePA 18711United States Department of Internal Medicine East Carolina University Brody School of MedicineGreenvilleNC 27834United States Department of Internal Medicine St.Dominic's HospitalJacksonMS 39216United States Department of Gastroenterology Hepatologyand NutritionCleveland Clinic FoundationClevelandOH 44195United States Department of Internal Medicine Mather Hospital and Hofstra University ZuckerSchool of MedicinePort JeffersonNY 11777United States

BACKGROUND Barrett's esophagus(BE)is a known premalignant precursor to esophageal adenocarcinoma(EAC).The prevalence rates continue to rise in the United States,but many patients who are at risk of EAC are not *** practice guidelines include male gender as a predisposing factor for BE and *** population-based clinical evidence regarding female gender remains *** To study comparative trends of gender disparities in patients with BE in the United *** A nationwide retrospective study was conducted using the 2009-2019 National Inpatient Sample(NIS)*** with a primary or secondary diagnosis code of BE were *** major outcome of interest was determining the gender disparities in patients with *** analysis for respective outcomes for females was also reported to ascertain any time-based *** We identified 1204190 patients with BE for the study *** the included patients,717439(59.6%)were men and 486751(40.4%)were *** mean age was higher in women than in men(67.1±0.4 vs 66.6±0.3 years,P<0.001).The rate of BE per 100000 total NIS hospitalizations for males increased from 144.6 in 2009 to 213.4 in 2019(P<0.001).The rate for females increased from 96.8 in 2009 to 148.7 in 2019(P<0.001).There was a higher frequency of obesity among women compared to men(17.4%vs 12.6%,P<0.001).Obesity prevalence among females increased from 12.3%in 2009 to 21.9%in 2019(P<0.001).A lower prevalence of smoking was noted in women than in men(20.8%vs 35.7%,P<0.001).However,trend analysis showed an increasing prevalence of smoking among women,from 12.9%in 2009 to 30.7%in 2019(P<0.001).Additionally,there was a lower prevalence of alcohol abuse,Helicobacter pylori(***),and diabetes mellitus among females than males(P<0.001).Trend analysis showed an increasing prevalence of alcohol use disorder and a decreasing prevalence of *** and diabetes mellitus among women(P<0.001).CONCLUSION The prevalence of BE among

关键词： Barrett’s esophagus Gender disparity Epidemiological trends Esophageal adenocarcinoma Screening endoscopy Female gender Risk factors

Electromagnetic wave scattering in plasma beam-driven waveguides under strong magnetic fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第11期76卷 123-134页

作者： Shahana Rizvi Muhammad afzal Department of Mathematics Capital University of Science and TechnologyIslamabadPakistan Department of Mathematics and Natural Sciences Center for Applied Mathematics and BioinformaticsGulf University for Science&Technology32093 HawallyKuwait

This study analyzes the scattering of electromagnetic waves in a cold and uniform plasma-filled waveguide driven by an intense relativistic plasma beam under a strong magnetic *** strong interaction of plasma with electromagnetic waves enables its potential use in different types of *** Helmholtz equation governs the boundary value problem,which is solved by incorporating the mode matching *** the boundary and matching conditions and the derived orthogonality and dispersion relations in this scheme gives an exact solution to the scattering *** numerical results shed light on the occurrence of reflection and transmission and flow of *** power flux is plotted against angular frequency and various duct *** solution is completely validated through the benefit of analytical and numerical *** investigation of this structure reveals not only its mathematical,but also its physical features.

关键词： electromagnetic waves cold plasma mode matching technique

CRISPRing the hypertrophic cardiomyopathy:correcting one pathogenic variant at a time

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2023年第7期8卷 3206-3208页

作者： Junaid afzal Kshitiz Department of Medicine Division of CardiologyUniversity of California San FranciscoSan FranciscoCA 94158USA Department of Biomedical Engineering University of Connecticut HealthFarmingtonCT 06032USA

In recent paired Nature Medicine publications,Reichert et al.1 and Chai et al.,2 adopted the Crispr/Cas9-adenine base editing(ABE)approach to base correct one of the most common pathogenic variant of hypertrophic cardiomyopathy(HCM)—Myh7 gene(c.1208 G>A:***403Gln).They delivered1,2 ABE-Cas9 with single guide RNA(sgRNA)via intra-thoracic injection of dualAAV9 virus which resulted in the dramatic reduction of the hypertrophy and fibrosis in the adult mice model of HCM.

关键词： al. cardiomyopathy injection

Investigation of ageing effects on the electrical properties of polyaniline/silver nanocomposites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2011年第5期20卷 424-432页

作者： Asma Binat afzal Muhammad Javed Akhtar Physics Division PINSTECHP.O.NiloreIslamabad 45650Pakistan Department of Chemical and Material Engineering PIEASIslamabad 45650Pakistan

Polyaniline（PANI）/Ag nanocomposites, synthesized by incorporation of separately prepared silver nanoparticles in 1-methyl-2-pyrrolidinone（NMP） solution of PANI, have been aged at the accelerated temperature of 120℃ to simulate a storage period of 2 years at 25℃. The accelerated ageing of these materials is done by using the activation energy calculated from data collected using heat flow calorimetry （HFC）. The impedance spectroscopic studies of NMP plasticized aged nanocomposite films suggest a microphase separation into reduced and oxidized repeat units. There is crosslinking of the lPANI films during ageing thereby obstructing the charge transfer between PANI chains and silver nanoparticles. As a result, the resistivity is increased.

关键词： polyaniline Ag nanoparticles impedance spectroscopy ageing

Autonomous Eyewitness Identification by Employing Linguistic Rules forDisaster Events

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2021年第1期66卷 481-498页

作者： Sajjad Haider Muhammad Tanvir afzal Capital University of Science and Technology Islamabad44000Pakistan

Social networking platforms provide a vital source for disseminating information across the globe,particularly in case of *** platforms are great mean to find out the real account of the *** is an example of such platform,which has been extensively utilized by scientific community due to its unidirectional *** is considered a challenging task to identify eyewitness tweets about the incident from the millions of tweets shared by twitter *** community has proposed diverse sets of techniques to identify eyewitness account.A recent state-of-the-art approach has proposed a comprehensive set of features to identify eyewitness ***,this approach suffers some ***,automatically extracting the feature-words remains a perplexing task against each feature identified by the ***,all identified features were not incorporated in the *** paper has utilized the language structure,linguistics,and word relation to achieve automatic extraction of feature-words by creating grammar ***,all identified features were implemented which were left out by the state-of-the-art model.A generic approach is taken to cover different types of disaster such as earthquakes,floods,hurricanes,and *** proposed approach was then evaluated for all disaster-types,including earthquakes,floods,hurricanes,and *** on the static dictionary,the Zahra et *** was able to produce an F-Score value of 0.92 for Eyewitness identification in the earthquake *** proposed approach secured F-Score values of 0.81 in the same *** score can be considered as a significant score without using a static dictionary.

关键词： Grammar rules social media eyewitness identification disaster response

Construction of conservation laws for the Gardner equation,Landau-Ginzburg-Higgs equation,and Hirota-Satsuma equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第5期76卷 49-57页

作者： Cheng Chen Faiza afzal Yufeng Zhang School of Mathematics China University of Mining and TechnologyXuzhou221116China Jiangsu Center for Applied Mathematics(CUMT) XuzhouJiangsu 221116China

In this paper,two different methods for calculating the conservation laws are used,these are the direct construction of conservation laws and the conservation theorem proposed by *** these two methods,we obtain the co... 详细信息

关键词： conservation laws Landau-Ginzburg-Higgs equation Hirota-Satsuma equation Gardner equation

Propagation of waves over a rugged topography

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2022年第1期7卷 14-28页

作者： Mohammad Saud afzal Lalit Kumar Department of civil engineering Indian Institute of TechnologyKharagpurIndia

The propagation of waves in shallow waters is affected by the bottom topography unlike deep water waves of the coastal *** to the interaction of the wave with bed topography,the wave transformation processes ***,diffraction,shoaling,and breaking are the wave transforma-tion processes that occur in the coastal *** significant wave height over rugged topography is a standardized statistics to denote the characteristic height of the random waves in a sea ***-fore,the objective of the present study is to predict the significant wave height over rugged *** SWAN standalone and SWAN DHH platform are used to predict significant wave height over rugged topography in Mehamn harbour,*** SWAN model results are almost similar to the lab data of Vold and Lothe(2009)for all the 22 scenarios at all the output ***,the four cases reported by Taehun(2011)and lab data from Vold and Lothe(2009)for that four cases are compared with the SWAN model *** is observed that the SWAN model results are much closer to the lab data of Vold and Lothe(2009).

关键词： Wave propagation SWAN Bathymetry Significant wave height and Peak wave period