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What have I discovered from ocean phenomena

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Journal of Hydrodynamics 2019年第6期31卷 1089-1098页

作者： Norden e.Huang Key Laboratory of Data Analysis and Applications(LDAA) State Oceanic AdministrationQingdao 266061China Pilot National Laboratory for Marine Science and Technology Qingdao 266237China

Almost everything I have done in the last twenty years is based on what I have discovered from studying ocean ***,the waves on the surface of the ocean and their *** items stand out:The first one is from studying the evolution of the waves from ripples to fully developed giant ocean *** quantify the changes,I found that frequency is very different from what had been defined traditionally through Fourier *** frequency should be determined by difterentiation of the phase function defined by an adaptive method rather than by any form of integral ***,it should have ever changing instantaneous *** second discovery is from studying wave turbulence *** reveal the detailed dynamics,I found that spectral representation should not be a single line on the frequency and energy *** spectrum should be a high dimensional manifold to cover all the possible dynamic interactions:additive and multiplicative *** discoveries have enabled me to develop a set of nonlinear and nonstationary data analysis tools to study many other phenomena,from turbulence to brain *** have led me to new wonders I have never even contemplated before.

关键词： Data analysis empirical mode decomposition(eMD) HHT Holo-Hilbert spectral analysis wave evolution

Modeling natural convection boundary layer flow of micropolar nanofluid over vertical permeable cone with variable wall temperature

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Applied Mathematics and Mechanics(english edition) 2017年第8期38卷 1171-1180页

作者： S.e.AHMeD Department of Mathematics Faculty of ScienceSouth Valley UniversityQena 83523Egypt

This paper discusses the natural convection boundary layer flow of a micropo- lax nanofluid over a vertical permeable cone with variable wall temperatures. Non-similax solutions are obtained. The nonlineaxly coupled differential equations under the boundary layer approximations governing the flow axe solved numerically using an efficient, itera- tive, tri-diagonal, implicit finite difference method. Different experimental correlations for both nanofluid effective viscosity and nanofluid thermal conductivity are considered. It is found that as the vortex-viscosity parameter increases, both the velocity profiles and the local Nusselt number decrease. Also, among all the nanoparticles considered in this investigation, Cu gives a good convection.

关键词： micropolar nanofluid non-similar solution cone finite difference method,non-uniform heating

exact Solutions of Nonlinear evolution equations in Mathematical Physics Using the Modified Simple equation Method

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Chinese Physics Letters 2012年第6期29卷 1-4页

作者： e.M.e.Zayed S.A.Hoda Ibrahim Department of Mathematics Faculty of ScienceZagazig UniversityP.O.Box 44519ZagazigEgypt

The modified simple equation method is employed to construct the exact solutions involving parameters of nonlinear evolution equations via the (1+1)-dimensional modified KdV equation,and the (1+1)-dimensional reaction-diffusion *** these parameters are taken to be special values,the solitary wave solutions are derived from the exact *** is shown that the proposed method provides a more powerful mathematical tool for solving nonlinear evolution equations in mathematical physics.

关键词： equation. exact equation

Bullous pemphigoid associated with acquired hemophilia A: A case report

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World Journal of Clinical Cases 2025年第4期13卷 28-33页

作者： Su-Ye Hu Meng-Can Li Zi-Jia Hao Xu-Ya Chai Pei-Sai Li Yang Liu Li-Xia Liu Ying Xu Pan-Pan Yang Ling-e Li Department of Dermatology Shijiazhuang Traditional Chinese Medicine HospitalShijiazhuang 050051Hebei ProvinceChina Graduate School Hebei University of Traditional Chinese MedicineShijiazhuang 050051Hebei ProvinceChina Department of Pathology Shijiazhuang Traditional Chinese Medicine HospitalShijiazhuang 050051Hebei ProvinceChina

BACKGROUND Acquired hemophilia A (AHA) is a rare and potentially severe bleeding disordercaused by circulating autoantibodies against factor Ⅷ (FⅧ). In approximately50% of the patients, the condition is associated with autoimmune diseases,cancers, medication use, pregnancy, and the post-partum period. Bullous pemphigoid(BP) is a chronic autoimmune subepidermal blistering disease associatedwith tissue-bound and circulating autoantibodies against BP antigens 180 (BP180)and 230 (BP230). AHA-associated BP has a high mortality rate;hence, the understandingof this disease must *** SUMMARY A 69-year-old man presented with erythema, blisters, blood blisters, and crustsaccompanied by severe pruritus for more than 20 days, and ecchymosis andswelling on his left upper arm for 3 days. Pathological examination revealed asubepidermal blister that contained eosinophils. Laboratory tests showed that theBP180 autoantibody levels had increased, isolated activated partial thromboplastintime was notably prolonged (115.6 s), and coagulation FⅧ activity wasextremely low (ermore, the FⅧ inhibitor titer had greatlyincreased (59.2 Bethesda units). Therefore, the patient was diagnosed as having BP associated with AHA, prescribed 0.05% topical halometasone cream, and transferred to a higher-level hospitalfor effective treatment;however, he died after 2 *** AHA associated BP is rare, dangerous, and has a high mortality rate. Therefore, its timely diagnosis and effectivetreatment are necessary.

关键词： Bullous pemphigoid Acquired hemophilia A Acquired hemophilia A FactorⅧ Case report

Brain-derived neurotrophic factor alterations and cognitive decline in schizophrenia:Implications for early intervention

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World Journal of Psychiatry 2025年第1期15卷 189-193页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This manuscript explores the recent study by Cui et al which assessed the interplay between inflammatory cytokines and brain-derived neurotrophic factor(BDNF)levels in first-episode schizophrenia *** study revealed that higher levels of interleukin-6 and tumor necrosis factor-αcorrelated with reduced BDNF levels and poorer cognitive *** is a severe psy-chiatric disorder impacting approximately 1%of the global population,charac-terized by positive symptoms(hallucinations and delusions),negative symptoms(diminished motivation and cognitive impairments)and disorganized thoughts and *** research highlights the role of BDNF as a potential biomarker for early diagnosis and therapeutic *** findings from Cui et al’s study suggest that targeting neuroinflammation and enhancing BDNF levels may improve cognitive *** treatment approaches involve a com-bination of pharmacological and non-pharmacological interventions tailored to individual patient ***,monitoring cognitive and neuroinflammatory markers is essential for improving patient outcomes and quality of ***-quently,this manuscript highlights the need for an integrated approach to schizo-phrenia management,considering both clinical symptoms and underlying neuro-biological changes.

关键词： Schizophrenia Cognitive impairment Neuroinflammatory markers Brain-derived neurotrophic factor Interleukin Personalized treatment

A new approach for free vibration analysis of a system of elastically interconnected similar rectangular plates

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earthquake engineering and engineering Vibration 2022年第4期21卷 947-967页

作者： e.Heidari A.Ariaei Department of Mechanical engineering Faculty of EngineeringUniversity of IsfahanIsfahan ***Iran

A new procedure is proposed to ease the analyses of the free vibration of an elastically connected identical plates system with respect to Kirchhoff plate theory.A structure of n parallel,elastically connected rectangular plates is of concern,whereby the motion is explained by a set of n coupled partial differential *** method involves a new change in variables to uncouple equations and form an equal system of n decoupled plates,while each is assumed to be elastically connected to the *** differential quadrature method is adopted to solve the decoupled *** unravel the original system,the inverse transform is *** the equations enables one to solve them based on the solution methods available for a single plate *** also diminishes the computational costs of such *** considering different boundary conditions,a case study is run to present the method and to validate the results with its counterparts,for which excellent agreement is *** the influence of dimensionless thickness,aspect ratio,and stiffness coefficients on the frequencies reveals the different effects of them at the low order of dimensionless natural frequencies in comparison with high orders and for different boundary conditions.

关键词： multiple-plate system elastic connections free vibration Kirchhoff plate theory differential quadrature method

Simplified seismic scenario analysis of existing masonry buildings accounting for local site effects

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Frontiers of Structural and Civil engineering 2024年第2期18卷 309-318页

作者： Ayşe e.ÖZSOYÖZBAY Işıl SANRI KARAPINAR Zehra N.KUTLU İsmail e.KILIÇ Department of Civil engineering Maltepe UniversityIstanbul 34857Turkey School of engineering and Construction Oryx Universal CollegeDoha 12253Qatar

This study discusses the effects of local sites and hazard amplification on the seismic vulnerability assessment of existing masonry *** this context,a rapid seismic evaluation procedure was implemented on an old masonry building stock in the historical center Galata,located inİstanbul,to determine the seismic risk priority of the built *** scenarios were generated for all soil classes,different moment magnitudes,and source-to-site distances to obtain more accurate results for the seismic vulnerability assessment of the studied building ***,damage distributions estimated under nine different scenarios with/without site effects were compared and illustrated in maps to discuss changes in vulnerability owing to amplification *** this study,by re-examining the rapid seismic evaluation procedure by including geo-hazard-based assessment,the importance of site effects on the vulnerability and risk assessment of built heritage was *** proposed framework integrating field data and local site effects is believed to advance the current applications for vulnerability assessment of masonry buildings and provide an improvement in the application of rapid seismic assessment procedures with more reliable results.

关键词： masonry buildings seismic vulnerability assessment cultural heritage local site effect

A CONJUGATe GRADIeNT MeTHOD FOR DISCReTe-TIMe OUTPUT FeeDBACK CONTROL DeSIGN

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Journal of Computational Mathematics 2012年第3期30卷 279-297页

作者： e1-Sayed M.e. Mostafa Department of Mathematics Faculty of Science Alexandria University Alexandria Egypt

In this paper, the discrete-time static output feedback control design problem is con- sidered. A nonlinear conjugate gradient method is analyzed and studied for solving an unconstrained matrix optimization problem that results from this optimal control prob- lem. In addition, through certain parametrization to the optimization problem an initial stabilizing static output feedback gain matrix is not required to start the conjugate gradi- ent method. Finally, the proposed algorithms are tested numerically through several test problems from the benchmark collection.

关键词： Output feedback control Nonlinear conjugate gradient methods Nonlinearprogramming.

Dependence of Mean and Peak Streamflow on Basin Area in the Conterminous United States

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Journal of earth Science 2016年第1期27卷 83-88页

作者： William e.Winston Robert e.Criss Department of earth and Planetary Sciences Washington University in St.Louis

Basin area is the primary control on both mean and peak streamflows, but relationships vary with regional meteorological conditions. Rich historical data sets permit deduction of these relationships for most areas of the United States, revealing both expected and unexpected correlations. On log-log plots, mean flows for most basins with 〉75 cm/y rainfall have unit slopes, with the y-intercept approximating the mean annual runoff. Lower slopes characterize regions where runoff is greatest at high topographic elevations, or where significant withdrawals for irrigation occur at lower elevations. Peak flows also correlate strongly with basin area, but the regressions for most regions have slopes ranging from 0.4 to 0.9, and y-intercepts that increase with increasing flood recurrence interval. The slopes on these log-log plots for peak flows are highest in cool regions with low sunshine and low evapotranspiration, and lowest where sunshine is abundant, evapotranspiration is high, and small convective storm cells are common. effects of relief are small and inconsistent. Peak flows of small watersheds are huge compared to their mean flows, commonly being several thousand times greater, particularly in the USA midcontinent where the slopes for peak flows are low.

关键词： floods GIS runoff rivers.