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  1. Article ; Online: Lifestyle Modifications and Dietary Factors versus Surgery in Benign Anorectal Conditions; Hemorrhoids, Fissures, and Fistulas.

    Hosseini, Seyed Vahid

    Iranian journal of medical sciences

    2023  Volume 48, Issue 4, Page(s) 355–357

    MeSH term(s) Humans ; Hemorrhoids/surgery ; Anus Diseases/surgery ; Fistula
    Language English
    Publishing date 2023-07-14
    Publishing country Iran
    Document type Editorial
    ZDB-ID 603872-4
    ISSN 1735-3688 ; 0253-0716
    ISSN (online) 1735-3688
    ISSN 0253-0716
    DOI 10.30476/ijms.2023.49356
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dimerized Hofstadter model in two-leg ladder quasi-crystals.

    Aghtouman, Sara / Hosseini, Mir Vahid

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 8782

    Abstract: We theoretically study topological features, band structure, and localization properties of a dimerized two-leg ladder with an oscillating on-site potential. The periodicity of the on-site potential can take either rational or irrational values. We ... ...

    Abstract We theoretically study topological features, band structure, and localization properties of a dimerized two-leg ladder with an oscillating on-site potential. The periodicity of the on-site potential can take either rational or irrational values. We consider two types of dimerized configurations; symmetric and asymmetric models. For rational values of the periodicity as long as inversion symmetry is preserved both symmetric and asymmetric ladders can host topological phases. Additionally, the energy spectrum of the models exhibits a fractal structure known as the Hofstadter butterfly spectrum, dependent on the dimerization of the hopping and the strength of the on-site potential. In the case of irrational values for the periodicity, a metal-insulator phase transition occurs with small values of the critical strength of the on-site potential in the dimerized cases. Our models incorporate the effects of lattice configuration and quasi-periodicity, paving the way for establishing platforms that host both topological and non-topological phase transitions.
    Language English
    Publishing date 2024-04-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-59301-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Lifestyle Modifications and Dietary Factors versus Surgery in Benign Anorectal Conditions; Hemorrhoids, Fissures, and Fistulas

    Seyed Vahid Hosseini

    Iranian Journal of Medical Sciences, Vol 48, Iss 4, Pp 355-

    2023  Volume 357

    Abstract: Benign anorectal diseases are a spectrum of conditions that involve the anus and rectum. Hemorrhoids, anal fissures, and fistulas are three of the most prevalent benign anorectal disorders that can have a detrimental impact on a patient’s quality of life. ...

    Abstract Benign anorectal diseases are a spectrum of conditions that involve the anus and rectum. Hemorrhoids, anal fissures, and fistulas are three of the most prevalent benign anorectal disorders that can have a detrimental impact on a patient’s quality of life.
    Keywords hemorrhoids ; rectal fistula ; life style ; constipation ; Medicine (General) ; R5-920
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher Shiraz University of Medical Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: SARS-CoV-2 Virulence: Interplay of Floating Virus-Laden Particles, Climate, and Humans.

    Hosseini, Vahid

    Advanced biosystems

    2020  Volume 4, Issue 7, Page(s) e2000105

    Abstract: With the emergence of COVID-19, it is important to address the possible scenarios of SARS-CoV-2 virulence. Although several researchers have addressed the possible mechanisms of enveloped virus transfection, for example, influenza, here, the relationship ...

    Abstract With the emergence of COVID-19, it is important to address the possible scenarios of SARS-CoV-2 virulence. Although several researchers have addressed the possible mechanisms of enveloped virus transfection, for example, influenza, here, the relationship between exhaled virus laden-particles, the climate, and transfection probability is discussed by interpreting the findings of prior studies. Importantly, the higher probability of viral transfection in cold and dry public spaces such as near cold shelves of groceries is illustrated. Thus, additional protective measures in such spaces are recommended.
    MeSH term(s) Betacoronavirus/pathogenicity ; Betacoronavirus/physiology ; COVID-19 ; Climate ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Coronavirus Infections/transmission ; Humans ; Pandemics/prevention & control ; Personal Protective Equipment/supply & distribution ; Physical Distancing ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; Pneumonia, Viral/transmission ; SARS-CoV-2 ; Temperature ; Virion/pathogenicity ; Virion/physiology ; Virulence
    Keywords covid19
    Language English
    Publishing date 2020-05-25
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ISSN 2366-7478
    ISSN 2366-7478
    DOI 10.1002/adbi.202000105
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Revival of superconductivity in a one-dimensional dimerized diamond lattice.

    Shahbazi, Sanaz / Hosseini, Mir Vahid

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 15725

    Abstract: We study an s-wave superconductivity in a one-dimensional dimerized diamond lattice in the presence of spin-orbit coupling and Zeeman field. The considered diamond lattice, comprising of three sublattices per unitcell and having flat band, has two ... ...

    Abstract We study an s-wave superconductivity in a one-dimensional dimerized diamond lattice in the presence of spin-orbit coupling and Zeeman field. The considered diamond lattice, comprising of three sublattices per unitcell and having flat band, has two dimerization patterns; the intra unitcell hoppings have the same (opposite) dimerization pattern as the corresponding inter unitcell hoppings, namely, neighboring (facing) dimerization. Using the mean-field theory, we calculate the superconducting order parameter self-consistently and examine the stability of the superconducting phase against the spin-orbit coupling, Zeeman splitting, dimerization, and temperature. We find that the spin-orbit coupling or Zeeman splitting individually has a detrimental effect on the superconductivity, mostly for the facing dimerization. But their mutual effect revives the superconductivity at charge neutrality point for the facing dimerization.
    Language English
    Publishing date 2023-09-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-42940-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Sensitivity and quality factor improvement of photonic crystal sensors by geometrical optimization of waveguides and micro-ring resonators combination.

    Fallahi, Vahid / Kordrostami, Zoheir / Hosseini, Mehdi

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 2001

    Abstract: In this work, the process of designing and simulating optical sensors based on photonic crystal (PC) micro-ring resonators (MRRs) has been investigated. According to the PC type, different waveguides and resonators can be designed, and various topologies ...

    Abstract In this work, the process of designing and simulating optical sensors based on photonic crystal (PC) micro-ring resonators (MRRs) has been investigated. According to the PC type, different waveguides and resonators can be designed, and various topologies can be proposed from their combination, for optical sensor applications. Here, the investigated MRR is of the symmetrical micro-hexagonal ring resonator (MHRR) type. Different arrays of MHRR arrangement have been designed to investigate their effects on the output spectrum. The results of the design and simulation of different topologies have been analyzed and compared with other numerical researches. Considering all the necessary aspects of PC optical sensors, a detailed and comprehensive algorithm has been presented for designing these devices and choosing the optimal structure. In a more complementary process, the effects of reflector rods have been investigated, which indicates the existence of similarity and compatibility in the design between the distance of reflector rods and the length of MHRRs to obtain the optimal structure. Finally, the effect of different values of lattice constant and radius of dielectric rods on FWHM, transmission (TR) and resonant wavelength is studied, and the most optimal mode is presented. In order to measure the performance of the proposed optimal sensor, its application for gas detection has been analyzed. TR, FWHM, quality factor (QF), sensitivity (S) and figure of merit (FOM) of the proposed sensor were equal to 96%, 0.31 nm, 2636, 6451 nm/RIU and 2960 RIU
    Language English
    Publishing date 2024-01-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-52363-2
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  7. Article ; Online: Optical coherence tomography in multiple sclerosis.

    Najafi, Amin / Ashoori, Negin / Hosseini, Katayoon / Abbasi, Vahid

    Medical hypothesis, discovery & innovation ophthalmology journal

    2024  Volume 12, Issue 4, Page(s) 187–193

    Abstract: Background: Multiple sclerosis (MS) is a chronic neurodegenerative disease that damages myelinated fibers within the central nervous system. Data obtained using optical coherence tomography (OCT) have recently been identified as a potential biomarker ... ...

    Abstract Background: Multiple sclerosis (MS) is a chronic neurodegenerative disease that damages myelinated fibers within the central nervous system. Data obtained using optical coherence tomography (OCT) have recently been identified as a potential biomarker for this disease. We aimed to measure circumpapillary retinal nerve fiber layer thickness (cpRNFLT) using OCT and to compare the results in healthy participants with those of individuals having clinically definitive MS with and without a history of optic neuritis.
    Methods: This cross-sectional study recruited patients with clinically confirmed MS, with and without optic neuritis, and healthy individuals as a control group. We documented demographic characteristics, duration of MS, and time elapsed since the episode of optic neuritis. All participants underwent a thorough ocular examination and measurement of total, superior, and inferior cpRNFLT using swept-source OCT.
    Results: In participants with MS, women outnumbered men in the subsets with (90%) and without (64%) optic neuritis. The control group comprised approximately similar numbers of men and women. There was a statistically significant difference in total, superior, and inferior cpRNFLT between study groups (all
    Conclusions: Patients with clinically confirmed MS, with or without optic neuritis, had a significantly decreased cpRNFLT compared to that of healthy individuals. There was a significant inverse correlation between age and total cpRNFLT and a difference in cpRNFLT between the sexes, indicating that age and sex may influence the measurement of cpRNFLT using OCT in patients with MS. As a screening tool, OCT should be used along with other existing diagnostic modalities for patients with definite or suspected MS. Further longitudinal studies including various classifications of MS with or without isolated episodes of optic neuritis, along with diagnostic accuracy studies, could provide more robust conclusions on the suitability of OCT as a biomarker of MS.
    Language English
    Publishing date 2024-01-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2709699-3
    ISSN 2322-3219 ; 2322-3219
    ISSN (online) 2322-3219
    ISSN 2322-3219
    DOI 10.51329/mehdiophthal1485
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: SARS‐CoV‐2 Virulence

    Hosseini, Vahid

    Advanced Biosystems

    Interplay of Floating Virus‐Laden Particles, Climate, and Humans

    2020  Volume 4, Issue 7, Page(s) 2000105

    Keywords covid19
    Language English
    Publisher Wiley
    Publishing country us
    Document type Article ; Online
    ISSN 2366-7478
    DOI 10.1002/adbi.202000105
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Editorial:Engineered Particles and Human Tissues for Pharmaceutical Research.

    Hosseini, Vahid

    Current pharmaceutical design

    2017  Volume 23, Issue 20, Page(s) 2907

    Language English
    Publishing date 2017
    Publishing country Netherlands
    Document type Editorial
    ZDB-ID 1304236-1
    ISSN 1873-4286 ; 1381-6128
    ISSN (online) 1873-4286
    ISSN 1381-6128
    DOI 10.2174/138161282320170818101922
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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    ab Jg. 2022: Lesesaal (EG)

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  10. Article ; Online: Enhanced and stable spin Hall conductivity in a disordered time-reversal and inversion symmetry broken topological insulator thin film.

    Pooyan, Siamak / Hosseini, Mir Vahid

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 15379

    Abstract: We consider a disordered topological insulator thin film placed on the top of a ferromagnetic insulator with a perpendicular exchange field M and subjected to a perpendicular electric field. The presence of ferromagnetic insulator causes that bottom ... ...

    Abstract We consider a disordered topological insulator thin film placed on the top of a ferromagnetic insulator with a perpendicular exchange field M and subjected to a perpendicular electric field. The presence of ferromagnetic insulator causes that bottom surface states of the topological insulator thin film become spin polarized and the electric field provides a potential difference V between the two surface states, resulting in breaking of time-reversal and inversion symmetry in the system. Using Kubo formalism and employing the first Born approximation as well as the self-consistent Born approximation, we calculate the spin Hall conductivity. We find that for small values of V, a large spin conductivity can be generated through large values of M away from the charge neutrality point. But for large values of V, the spin conductivity can be promoted even with small values of M around the charge neutrality point. The effect of vertex corrections and the stability of the obtained large spin conductivity against disorders are also examined.
    Language English
    Publishing date 2022-09-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-19756-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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