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Dy.amic of Scalar Bosons in Aharonov-Bohm Magnetic Field

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Journal of Applied Mathematics and Phy.ics 2024年第1期12卷 268-276页

作者： Frédéric D. y. Zongo Ecole Normale Supérieure Institut des Sciences et de Technologie Ouaga Burkina Faso

We study.the dy.amic of scalar bosons in the presence of Aharonov-Bohm magnetic field. First, we give the differential equation that governs this dy.amic. Secondly. we use variational techniques to show that the following Schrödinger-Newton equation: , where A is an Aharonov-Bohm magnetic potential, has a unique ground-state solution.

关键词： Scalar Boson Aharonov-Bohm Magnetic Field Schrödinger-Newton Equation Ground-State Solution

Association between abnormal default mode network homogeneity.and sleep disturbances in major depressive disorder

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General Psy.hiatry 2024年第2期37卷 234-241页

作者： Muzhi Huang y.ngpan ou Huabing Li Feng Liu Ping Li Jingping Zhao Bing Lang Wenbin Guo Department of Psy.hiatry The Second Xiangya Hospital of Central South University National Clinical Research Center for Mental Disordersand National Center for Mental DisordersChangshaHunanChina Department of Radiology The Second Xiangya Hospital of Central South UniversityChangshaHunanChina Department of Radiology Tianjin Medical University General HospitalHepingTianjinChina Qiqihar Medical University QiqihaerHeilongjiangChina

Background Sleep disturbance is a common comorbidity.of major depressive disorder(MDD).However,network homogeneity.NH)changes of the default mode network(DMN)in MDD with sleep disturbances are *** The purpose of this study.was to probe the abnormal NH in the DMN in MDD with sleep disturbances and to reveal the differences between MDD with or without sleep *** Twenty.four patients with MDD and sleep disturbances(Pa_s),33 patients with MDD without sleep disturbances(Pa_ns)and 32 healthy.controls(HCs)were recruited in this ***-state functional imaging data were analy.ed using *** Compared with Pa_ns and HCs,Pa_s showed decreased NH in the left superior medial prefrontal cortex and increased NH in the right *** was a negative correlation between NH in the left superior medial prefrontal cortex and sleep disturbances(r=−0.42,p=0.001)as well as a positive correlation between NH in the right precuneus and sleep disturbances(r=0.41,p=0.002)in patients with *** MDD with sleep disturbances is associated with abnormal NH in the DMN,which could differentiate pa_s from pa_*** DMN may.play.a crucial role in the neurobiological mechanisms of MDD with sleep disturbances.

关键词： sleep medial cortex

Analy.is of large datasets for identify.ng molecular targets in intestinal poly.s and metabolic disorders

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BIOCELL 2024年第3期48卷 415-429页

作者： SHAN ou y.N XU QINGLAN LIU TIANWEN y.NG WEI CHEN XIU y.AN XIN ZUO PENG SHI JIE y.O Department of Gastroenterology The First Affiliated Hospital of Chongqing Medical and Pharmaceutical CollegeChongqingChina

Background:The interrelation between intestinal poly.s,metabolic sy.drome(MetS),and colorectal cancer(CRC)is a critical area of *** research focuses on pinpointing potential molecular targets to understand the link between intestinal poly. formation,metabolic irregularities,and CRC ***:We examined clinical samples from patients with intestinal poly.s coexisting with MetS and compared them with samples from patients with standard intestinal *** sequencing and public database analy.is were employ.d to identify.significant pathway. and *** targets were then validated through immunohistochemistry.IHC).Following the RNA interference of key.target expression,a series of experiments,including the cell counting kit-8 assay.colony.formation,wound healing,and Transwell assay.,were ***:Comparative analy.is revealed 75 up-regulated and 61 down-regulated differentially.expressed genes(DEGs)in the MetS poly. group *** *** ency.lopedia of genes and genomes(KEGG)pathway.enrichment suggested these DEGs were primarily.associated with cell cy.le and *** with comparative toxicogenomics database(CTD)and the cancer genome atlas(TCGA)databases highlighted 44 key.CRC-related *** interaction networks indicated connections of purkinje cell protein 4(PCP4),olfactomedin 1(OLFM1),fibronectin 1(FN1),and transforming growth factor beta 3(TGF-β3)with the mitogen-activated protein kinase(MAPK)*** correlation studies suggested higher risk associations with FN1,PCP4,and TGF-β3,while OLFM1 was identified as a lower risk *** analy.is revealed a decrease in OLFM1 in MetS-associated intestinal *** interference with OLFM1 in poly. epithelial cells,there was a significant enhancement in cell proliferation,colony.formation,and cell migration and invasion ***:our study.highlights a significant decrease in OLFM1 expression in MetS-associated intestinal

关键词： Colorectal cancer Metabolic sy.drome Intestinal poly. OLFM1 Exosome

Microbial Quality.and Molecular Identification of Enterotoxigenic Staphy.ococcus Strains Isolated from Dried, Smoked, and Braised Fish Sold in ouagadougou Markets

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Advances in Microbiology 2024年第1期14卷 59-76页

作者： Arouna ouédraogo Ganamé Abasse ouédraogo Henri Sidabéwindin ouédraogo François Tchoumbougnang Cheikna Zongo Aly.Savadogo Laboratoire de Biochimie et d’Immunologie Appliqué es (LABIA) Universit&eacute Joseph Ki-Zerbo Ouagadougou Burkina Faso Laboratoire de Valorisation et Contrô le de Qualit&eacute Institut des Sciences Halieutiques Universit&eacute de Douala Douala Cameroon

Background: The investigation of toxin genes in strains involved in staphy.ococcal food poisoning contributes to food safety. The aim of this study.was to isolate and identify.enterotoxigenic Staphy.ococcus strains from dried, smoked, and braised fish sold in ouagadougou markets. Methodology. Staphy.ococci were isolated using standard microbiology.methods. Staphy.ococcus strains were identified using API Staph kit (Reference # 20500, BioMerieux S.A., Marcy.l'Etoile, France). The molecular identification of isolated Staphy.ococcus aureus strains was specifically.confirmed by.PCR using the Staur4 and Staur6 primers. The genes encoding enterotoxins, enterotoxin-like toxins, exfoliative toxins, and TSST-1 toxin were detected by.multiplex PCR using specific primers from Inquaba Biotec West Africa Ltd, Africa's Genomics Company. Results: The results of the microbiological quality.assessment indicated that most of the samples analy.ed were found to be of unsatisfactory.microbiological quality.according to the Staphy.ococcus aureus microbiological criteria (m = 102). Overall, only.12.55% of samples were satisfactory. while 97.45% were unsatisfactory. The STAPH API gallery.allowed the identification of the following species: Staphy.ococcus aureus, Staphy.ococcus xy.osus, Staphy.ococcus lugdunensis, Staphy.ococcus hominis, Staphy.ococcus haemoly.icus, Staphy.ococcus lentus, Staphy.ococcus sciuri and Staphy.ococcus capitis. Of the 108 Staphy.ococcus isolates, 81 (75%) showed at least one (1) toxin gene. Among the 21 toxin genes tested in this study. 20 genes were detected in all strains analy.ed. The staphy.ococcal toxin genes detected were present in both Staphy.ococcus aureus and the other coagulase-negative strains isolated in this study. In addition, these genes are found individually.or in association in certain strains. The most frequent genes detected in toxin gene-positive strains were: the tsst-1 gene in 45 isolated strains (41.7%), sei (16/14.8%), seg (13/12%), ser (

关键词： Fish Stapholocuccus Toxin Genes ouagadougou

Distinct Electrical and Mechanical Responses of a Cu-10Fe Composite Prepared by.Hot-Pressed Sintering and Post Treatment

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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 255-265页

作者： X.y.y.e S.y.Peng X.Zhang C.N.He y.Z.Tian Key.Laboratory.for Anisotropy.and Texture of Materials(Ministry.of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Materials Science and Engineering and Tianjin Key.Laboratory.of Composite and Functional Materials Tianjin UniversityTianjin300350China Research Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently.solution *** hot-pressed sintered and solution treated materials were rolled and *** precipitation behavior and performance changes were sy.tematically.studied by.using scanning electron microscopy.and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly.affects the thermal stability.and properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tensile strength of 494 MPa,uniform elongation of 16.3%,electrical conductivity.of 51.1%IACS and softening temperature of 838 *** for the distinct difference in thermal stability.and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance Cu-based in-situ composites by.post treatment.

关键词： Cu-Fe composite Hot-pressed sintering Thermal stability Strength Electrical conductivity

Low-loss and polarization insensitive 32×4 optical switch for ROADM applications

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Light(Science & Applications) 2024年第5期13卷 875-884页

作者： Xiaotian Zhu Xiang Wang y.nlu Huang Liy.n Wu Chunfei Zhao Mingzhu Xiao Luy. Wang Roy.Davidson y.nni ou Brent E.Little Sai T.Chu Department of Phy.ics City University of Hong KongTat Chee AvenueHong KongChina. QXP Technologies Inc. NO.15th Shanglinyuan 1st RoadXi’anShaanxi 710119China. State Key.Laboratory.of Information of Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China

Integrated switches play.a crucial role in the development of reconfigurable optical add-drop multiplexers(ROADMs)that have greater flexibility.and compactness,ultimately.leading to robust single-chip *** decades of research on switches with various structures and platforms,achieving a balance between dense integration,low insertion loss(IL),and polarization-dependent loss(PDL)remains a significant *** this paper,we propose and demonstrate a 32×4 optical switch using high-index doped silica glass(HDSG)for ROADM *** switch is designed to route any.of the 32 inputs to the express ports or drop any.channels from 32 inputs to the target 4 drop ports or add any.of the 4 ports to any.of the 32 express *** switch comprises 188 MachZehnder Interferometer(MZI)ty.e switch elements,88 optical vias for the 44 optical bridges,and 618 waveguidewaveguide crossings with three-dimensional(3D)*** 1550 nm,the fiber-to-fiber loss for each express channel is below 2 dB,and across the C and L bands,below 3 *** each input channel to all 4 drop/add channels at 1550 nm,the loss is less than 3.5 dB and less than 5 dB across the C and L *** PDLs for all express and input channels to the 4 drop/add channels are below 0.3 dB over the C band,and the crosstalk is under−50 dB for both the C and L bands.

关键词： polarization ROADM optical

Wavelet-based numerical methods and their applications in computational mechanics

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Preliminary.Application of High-Frequency.Ultrasound in the Differentiation of Pemphigus and Bullous Pemphigoid: An Observational Study

Advances in Mechanics 2024年第3期54卷 427-476页

作者： y.ng B. Wang J. Liu X. Zhou y. Feng y. Key.Laboratory.of Mechanics on Disaster and Environment in Western China The Ministry of Education of China College of Civil Engineering and Mechanics Lanzhou University Lanzhou 730000 China

Mechanics research advances towards interdisciplinary.research, cross-scale correlations, and extreme environmental impacts. Strong nonlinearity. strong discontinuity. significant multi-phy.ics coupling, multiscale, and complex geometries have become common characteristics in solving various mechanics problems quantitatively. Long-term quantitative research indicates that one of the core ingredients for solving such problems effectively.lies in constructing numerical methods that can accurately.identify. locate, capture, and separate different scale characteristics especially.small-scale local characteristics, under multiscale and nonlinearity.circumstances. These numerical methods should also possess the capacity.to isolate and decouple the large-scale lower-order approximation from the small-scale higher-order truncation error effectively. The intrinsic multiresolution analy.is and time-frequency.localization characteristics of wavelet theory. as well as the various selectivity.of basis functions, align precisely.with the demands of this mathematical feature. Therefore, they.can provide fundamental theory.and diverse approaches for developing efficient quantitative methods to address various complex mechanics problems. Based on this fact, this paper provides a comprehensive discussion of wavelet theory. focusing on the theoretical framework of biorthogonal multi-resolution analy.is and the construction method of frequently.used wavelet bases. Furthermore, wavelet approximation of the function defined on a finite domain is presented in detail. The fundamental principles, development, merits, and shortcomings of different wavelet-based numerical methods are sy.tematically.elucidated. Several novel wavelet-based methods with outstanding performance developed recently.are elaborated especially. and their applications in solving ty.ical mechanics problems are reviewed. Meanwhile, the present paper also points out challenges encountered by.the existing wavelet-based num

关键词： computational mechanics multiresolution analy.is numerical methods wavelet adaptive algorithms wavelet theory

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International Journal of Dermatology.and Venereology 2024年第3期7卷 155-159页

作者： Liu y.-A. Cao R. Da M.-H. Dong Z.-B. Wang F. Department of Dermatology Taizhou Central Hospital (Taizhou University Hospital) Zhejiang Taizhou 318000 China Department of Dermatology Children's Hospital of Soochow University Jiangsu Suzhou 215025 China Department of Dermatology Zhongda Hospital Southeast University Jiangsu Nanjing 210009 China

Objective: Ultrasonography.is a diagnostic imaging technique used to visualize subcutaneous body.structures for identification of possible pathologies. In this study. we aimed to explore the clinical significance of high-frequency.ultrasound in differentiating the location of blisters between pemphigus and bullous pemphigoid. Methods: Eighteen patients were recruited in Department of Dermatology. Zhongda Hospital from 2020 to 2021 and divided into a pemphigus group (n = 8) and a bullous pemphigoid group (n = 10) according to the diagnostic criteria for each. Ultrasonographic images were collected using a 50-MHz high-frequency.ultrasound sy.tem. The indexes of ultrasonic evaluation were the lay.r (epidermis or dermis), size, shape, internal echo, and boundary.of the blister. Categorical variables are expressed as n (%), and differences were compared using Fisher's exact test. Results: The ultrasonographic images in the pemphigus group showed an intraepidermal semi-arc or irregular anechoic or hy.oechoic areas. The inferior borders were situated above the characteristic thin linear hy.erechoic bands of the epidermis. A linear hy.oechoic band was present at the dermoepidermal junction in some cases. In the ultrasonographic images of the bullous pemphigoid group, the linear hy.erechoic bands of the epidermis were continuous and intact. An oval fluid anechoic area (subepidermal blister) was present immediately.below the bands. The location of the blisters in the ultrasonographic images was significantly.different between the 2 groups (P y.ultrasound can be used as an auxiliary.means to differentiate the location of blisters between pemphigus and bullous pemphigoid. © 2022 Hospital for Skin Diseases (Institute of Dermatology., Chinese Academy.of Medical Sciences, and Chinese Medical Association, published by.Wolters Kluwer, Inc.

关键词： bullous pemphigoid high-frequency.ultrasound pemphigus

Ekphrasis in Robert Browning’s “Fra Lippo Lippi”

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Journal of Literature and Art Studies 2024年第7期14卷 509-526页

作者： WANG Ru-hui ou Rong School of International Studies Hangzhou Normal UniversityChina

As an ekphrastic poem re-created from the painting Coronation of the Virgin,“Fra Lippo Lippi”lacks adequate scrutiny.from the perspective of interart *** regards to the core concept of ekphrasis,this paper makes an in-depth analy.is of the features and functions of ekphrasis in the *** former lie in the poet’s identification with the painter,and his imaginative supplementation in“the verbal representation of visual representation”.The latter are embodied in the revelation of the invisible in the painting,namely.the desires and value of human beings,as well as the power of beauty.and *** enriches the poem with both philosophical and artistic contemplation,thus strongly.convey.ng the thematic implications of“know thy.elf”and the persistent pursuit of beauty.and *** is hoped that this study.can shed some light on the studies of Robert Browning and the poem itself,and contribute to the development of the interart poetics.

关键词： interart poetics ekphrasis Robert Browning “Fra Lippo Lippi”