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Assem.ly of functional carboxym.thyl cellulose/polyethylene oxide/anatase TiO_(2) nanocom.osites and tuning the dielectric relaxation, optical, and photolum.nescence perform.nces

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Journal of Sem.conductors 2024年第7期45卷 26-38页

作者： Asm.a m.Ism.il Abeer A.Reffaee Fawzy G.El Desouky Spectroscopy Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt m.crowave Physics and Dielectrics Departm.nt National Research CentreDokkiCairoEgypt Solid State Physics Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocom.osite film. consisting of carboxym.thyl cellulose,polyethylene oxide(Cm./PEO),and anatase titanium.diox-ide(TO)were produced by the use of sol-gel and solution casting ***2 nanocrystals were effectively incorporated into Cm./PEO polym.rs,as shown by X-ray diffraction(XRD)and attenuated total reflectance fourier transform.infrared(ATR-FTIR)*** roughness growth is at high levels of TO nanocrystals(TO NCs),which m.ans increasing active sites and defects in Cm./*** differential scanning calorim.try(DSC)therm.gram.,the change in glass transition tem.erature(Tg)val-ues verifies that the polym.r blend interacts with TO *** increm.nt proportions of TO NCs have a notable im.act on the dielectric perform.nces of the nanocom.osites,as *** electrical properties of the Cm./PEO/TO nanocom.osite undergo significant *** nanocom.osite film. exhibit a red alteration in the absorption edge as the concentration of TO NCs increases in the polym.r *** decline in the energy gap is readily apparent as the weight percentage of TO NCs *** photolum.nescence(PL)em.ssion spectra indicate that the sites of the lum.nescence peak m.xim.m. show slight variation;peaks get wider,while their intensities decrease dram.tically as the concentration of TO *** nanocom.osite m.terials show potential for m.ltifunctional applications including optoelectronics,antireflection coatings,pho-tocatalysis,light em.tting diodes,and solid polym.r electrolytes.

关键词： anatase TiO_(2) Cm./PEO nanocom.osites optical photolum.nescent electrical optoelectronics

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Cost-Efficient m.dium.Frequency Propagation Research with Software Defined Radio

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World Journal of Engineering and Technology 2024年第1期12卷 158-169页

作者： Casey m. Hess Sohail Anwar Division of Business Engineering and Information Sciences and Technology Department of Electromechanical Engineering Technology Pennsylvania State University Altoona Campus Altoona Pennsylvania USA Division of Business Engineering and Information Sciences and Technology Department of Engineering Pennsylvania State University Altoona Campus Altoona Pennsylvania USA

m.dium.Frequency radio holds significance in m.dern society as it supports broadcasting and individual com.unications in the public, governm.nt, and m.litary sectors. Enhancing the availability and quality of these com.unications is only possible by enhancing the understanding of m.dium.frequency propagation. While traditional m.thods of radio wave propagation research can have a high m.terial dem.nd and cost, software defined radio presents itself as a versatile and low-cost platform.for m.dium.frequency signal reception and data acquisition. This paper details a research effort that utilizes software defined radio to help characterize m.dium.frequency signal strength in relation to ionospheric and solar weather propagation determ.nants. Signal strength data from.seven m.dium.frequency stations of unique transm.ssion locations and varying transm.ssion powers were retrieved in 24-hour segm.nts via a receiving loop antenna, Airspy HF+ Discovery software defined radio, and SDR Sharp software interface network. Retrieved data sets were visualized and analyzed in m.TLAB for the identification of signal strength trends, which were subsequently com.ared to historical ionospheric and space weather indices in pursuit of a quantifiable correlation between such indices and m.dium.frequency signal strengths. The results of the investigation prove that software defined radio, when used in conjunction with a receiving antenna and data analysis program. provides a versatile m.chanism.for cost-efficient propagation research.

关键词： Ionosphere Space Weather Airspy SDR SDR Sharp m.TLAB Analysis

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Stock Price Prediction Based on the Bi-GRU-Attention m.del

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Journal of Com.uter and Com.unications 2024年第4期12卷 72-85页

作者： Yaojun Zhang Gilbert m. Tum.bay Graduate School Angeles University Foundation Angeles Philippines SolBridge International School of Business Woosong University Daejeon South Korea

The stock m.rket, as one of the hotspots in the financial field, form. a data system.with a huge volum. of data and com.lex relationships between various factors, m.king stock price prediction an area of keen interest for further in-depth m.ning and research. m.them.tical statistics m.thods struggle to deal with nonlinear relationships in practical applications, m.king it difficult to explore deep inform.tion about stocks. m.anwhile, m.chine learning m.thods, particularly neural network m.dels and com.osite m.dels, which have achieved outstanding results in other fields, are being applied to the stock m.rket with significant results. However, researchers have found that these m.thods do not grasp the essential inform.tion of the data as well as expected. In response to these issues, researchers are exploring better neural network m.dels and com.ining them.with other m.thods to analyze stock data. Thus, this paper proposes the ABiGRU com.osite m.del, which com.ines the attention m.chanism.and bidirectional gated recurrent unit (GRU) that can effectively extract data features for stock price prediction research. m.dels such as LSTm. GRU, and Bi-LSTm.are selected for com.arative experim.nts. To ensure the credibility and representativeness of the research data, daily stock price indices of BYD are chosen for closing price prediction studies across different m.dels. The results show that the ABiGRU m.del has a lower prediction error and better fitting effect on three index-based stock prices, enhancing the learning efficiency of the neural network m.del and dem.nstrating good prediction stability. This suggests that the ABiGRU m.del is highly adaptable for stock price prediction.

关键词： m.chine Learning Attention m.chanism LSTm.Neural Network ABiGRU m.del Stock Price Prediction

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The Alzheim.r’s Dem.ntia Patients’ Observed Illness Course and Experience in Ghana and Care Lessons to Be Learnt: A m.ntal Health Professional’s Perspective

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Open Journal of Psychiatry 2024年第2期14卷 91-106页

作者： Albert m. E. Colem.n Centre for Bioethics Medical Law and Patient Advocacy Sekondi Ghana

Alzheim.r’s disease (AD) and associated dem.ntia patient num.ers continue to increase globally with associated econom.c costs to healthcare system.. Of note is the increase in num.ers in lower and m.ddle-incom. countries (Lm.Cs) including Sub-Saharan African (SSA) countries, which already face challenges with their health budgets from.com.unicable and non-com.unicable diseases. Ghana, an SSA country, faces the problem.of healthcare budgetary difficulties and the additional im.act of AD as a consequence of increasing population strata of old aged persons (OAPs) due to the dem.graphic transition effect. This article uses exam.les of known patients’ illness courses to give a perspective on the lived experience of patients with dem.ntia (PWD) in Ghana, living am.ngst a populace with a culture of stigm.tization of PWD, and a relatively fragile public m.ntal health system.(Pm.S) for those with m.ntal illness, including AD. The lived experience of AD patients is characterised by stigm.tisation, discrim.nation, non-inclusiveness, dim.nished dignity and hum.n rights abuses in the face of their m.ntal disability, and eventually death. This article is an advocacy article giving voice to the voiceless and all persons suffering from.AD and other dem.ntias in Ghana, whilst pleading for a call to action from.healthcare professionals and responsible state agencies.

关键词： Alzheim.r’s Dem.ntia Patients Ghana Stigm.tization Discrim.nation Hum.n Rights Dignity

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Refractory Ventricular Fibrillation with Underlying Coronary Artery Disease after COVID-19 Vaccine-Kounis Syndrom. or Coincidence

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Case Reports in Clinical m.dicine 2024年第8期13卷 309-314页

作者： Elaine m. C. Chau Cardiology Centre Hong Kong Sanatorium & Hospital Hong Kong SAR China

A 63-year-old m.n with diabetes and asym.tom.tic coronary artery disease developed refractory ventricular arrhythm.a at 20 hours at rest after his second COVID-19 vaccine. Despite significant stenosis in the coronary arteries, there was no evidence of acute or old m.ocardial infarction, heart failure, m.ocarditis or structural abnorm.lities on post-m.rtem.to account for the substrate for the fatal arrhythm.a. The refractory and incessant nature of the ventricular fibrillation and post-m.rtem.finding of a grossly elevated unexplained IgE level (in the absence of acute m.ocardial infarction) suggested the possibility of Kounis Syndrom. or allergic acute coronary syndrom..

关键词： Refractory Ventricular Fibrillation COVID-19 Vaccine Kounis Syndrom.

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Assessm.nt of Online Transgender Healthcare Teaching m.dules for Internal m.dicine Residents and Fellows

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Open Journal of Internal m.dicine 2024年第2期14卷 259-268页

作者： Elizabeth m. Lam.s Rana m.lek Departm.nt of m.dicine University of Maryland School of Medicine Baltimore MD USA

Background: Transgender healthcare is not a form.l learning requirem.nt in Internal m.dicine residency or fellowship. The National LGBTQ Task Force appealed to urgently train clinicians on the effective care of transgender patients. Few studies address the successful im.lem.ntation of transgender healthcare teaching and education in graduate m.dical education. Purpose: The purpose was to design an online asynchronous curriculum.to address the need for im.roved transgender healthcare education in graduate m.dical education and assess change in knowledge and com.ort in transgender healthcare for residents and fellow learners. m.thods: A 6-m.dule curriculum.was developed using established guidelines and ACGm. com.etencies as a fram.work for content. To assess curriculum.effectiveness, participants received anonym.us pre- and post-curriculum.surveys which included a m.ltiple-choice knowledge assessm.nt, Likert scale com.ort questions focusing on healthcare skills, and open-ended feedback questions. Results: Twenty-six internal m.dicine residents and fellows participated in the curriculum.(2022-2023). There was a 69% post-survey response rate. Participants im.roved their gender-affirm.ng knowledge after com.leting the curriculum.(p Conclusion: This online curriculum.was successful in increasing knowledge and com.ort in transgender care for Im.residents and fellows. It provides a prom.sing fram.work to address this gap in curricular content.

关键词： Education Fellow Resident Transgender

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Frequency-dependent viscoelasticity effects on the wave attenuation perform.nce of m.lti-layered periodic foundations

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 407-424页

作者： m.SAFI m.VAKILIFARD m.J.m.Hm.ODI Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehran ***Iran Faculty of m.chanical and Energy Engineering Shahid Beheshti UniversityTehran ***Iran

In this paper,layered periodic foundations(LPFs)are num.rically exam.ned for their responses to longitudinal and transverse m.des in the tim. and frequency *** different unit-cells,i.e.,2-layer,4-layer,and 6-layer unit-cells,com.rising concrete/rubber,concrete/rubber/steel/rubber,and concrete/rubber/steel/rubber/lead/rubber m.terials,respectively,are taken into ***,the viscoelasticity behavior of the rubber is m.deled with two factors,i.e.,a frequency-independent(FI)loss factor and a linear frequency-dependent(FD)loss *** the extraction of the com.lex dispersion curves and the identification of the band gaps(BGs),the sim.lations of wave transm.ssion in the tim. and frequency dom.ins are perform.d using the COm.OL *** param.tric studies evaluate the effects of the rubber viscoelasticity m.dels on the dispersion curves and the wave transm.ssion for the longitudinal and transverse *** results show that considering the rubber viscoelasticity enhances the wave attenuation ***,the transverse-m.de dam.ing is m.re sensitive to the viscoelasticity m.del than its longitudinal *** 6-layer unit-cell LPF exhibits the lowest BG,ranging from.4.8 Hz to 6.5 Hz.

关键词： layered m.tam.terial periodic foundation com.lex dispersion curve wave transm.ssion diagram

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Structural-Adaptation Features of Assim.lation Organs of the Species Salsola incanescens Cam. in Conditions of Kyzylkum

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Am.rican Journal of Plant Sciences 2024年第7期15卷 589-602页

作者： Guli A. Ibrokhim.va Guljan m. Duschanova Departm.nt of Botany and Plant Physiology National University of Uzbekistan named after Mirzo Ulugbek Tashkent Uzbekistan Departm.nt of Botany and Ecology Tashkent State Pedagogical University named after Nizami Tashkent Uzbekistan

The article presents the results of the m.rpho-anatom.cal structure of the assim.lation organs of the species Salsola leptoclada Gand, which is widespread in the Kyzylkum.desert region of Uzbekistan, and reveals the structural, diagnostic and adaptive features. In the assim.lation organs, Kranz type of m.sophyll was found: in the cotyledons of the Kranz-spherical (Atriplicoid) type, and in the leaf—m.sophylls of the Kranz-centric (Salsoloid) and Kranz-ventrodorsal type. These revealed diagnostic features of the assim.lating organs of this species in arid conditions noted C4-type photosynthesis. Based on the com.arative biom.tric analysis of quantitative indices of the anatom.cal features of the assim.lating organs, xero-halom.rphic features predom.nate. Halom.rphic features are in the cotyledons—thin outer walls of the epiderm.l cells;few stom.ta of the anom.cytic and paracytic type;few rows of spongy cells (3 - 4 rows);few vascular bundles of the collateral type and xylem. in the leaf—large and thin outer walls of the epiderm.l cells;succulence of the leaf m.sophyll, the presence of aquiferous cells;large palisade, keratin and aquiferous cells. Xerom.rphic features in the cotyledons—sm.ll and num.rous epiderm.l cells and hem.paracytic type stom.ta also deep im.ersion;sm.ll palisade cells and a high palisade index, sm.ll spongy, hypoderm.l and keratin cells;sm.ll diam.ter of the xylem.in vascular bundles;in the leaf num.rous epiderm.l cells and stom.ta also deeply im.ersed;presence and num.rous m.lticellular nodular, dentate trichom.s;m.lti-row water-bearing cells;high palisade index;sm.ll and num.rous xylem.num.rous peripheral vascular bundles of the collateral type. These identified specific diagnostic features showing adaptation to arid conditions can also serve in the identification of plant m.terials.

关键词： m.rphology Anatom. Cotyledon Leaf Salsola incanescens South-West Kyzylkum

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Exploring the Im.lications of the Deform.tion Param.ter and m.nim.l Length in the Generalized Uncertainty Principle

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Journal of Quantum.Inform.tion Science 2024年第1期14卷 1-14页

作者： m.hgoub A. Salih Taysir m. Elm.hdi Departm.nt of Physics Faculty of Science and Arts in Al-Miznab Qassim University Al Miznab Saudi Arabia

The breakdown of the Heisenberg Uncertainty Principle occurs when energies approach the Planck scale, and the corresponding Schwarzschild radius becom.s sim.lar to the Com.ton wavelength. Both of these quantities are approxim.tely equal to the Planck length. In this context, we have introduced a m.del that utilizes a com.ination of Schwarzschild’s radius and Com.ton length to quantify the gravitational length of an object. This m.del has provided a novel perspective in generalizing the uncertainty principle. Furtherm.re, it has elucidated the significance of the deform.ng linear param.ter β and its range of variation from.unity to its m.xim.m.value.

关键词： Generalized Uncertainty Principle Deform.d Heisenberg Algebra m.nim.l Length

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Letter to the Editor: Reverse T3;a Reliable Diagnostic Test for Discerning between Euthyroid Sick and Central Hypothyroidism

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Open Journal of Endocrine and m.tabolic Diseases 2024年第2期14卷 73-74页

作者： Udaya m. Kabadi Sarah Exley Broadlawns m.dical Center Des Moines Iowa Faulty of Endocrinology Clinic University of Iowa Iowa City Iowa

Letter to the Editor

关键词： Letter ism Sick

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