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  1. Article ; Online: ZnFe

    Ghanbarpour, Amir / Ghorbani-Choghamarani, Arash / Aghavandi, Hamid / Jafari, Ahmad

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 7449

    Abstract: Herein, we report the synthesis of ... ...

    Abstract Herein, we report the synthesis of ZnFe
    Language English
    Publishing date 2024-03-28
    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/s41598-024-57317-2
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  2. Article ; Online: Simple Synthesis of Novel Cr-EDTA-MOF: A Green, Reusable, and Versatile Catalyst for the Production of Biodiesel Fuel from Oleic Acid and Palmitic Acid.

    Jafari, Ahmad / Ghorbani-Choghamarani, Arash / Aghavandi, Hamid

    ACS omega

    2024  Volume 9, Issue 5, Page(s) 5255–5264

    Abstract: Herein, we reported an efficient and novel metal-organic framework (MOF) that was designed and fabricated via hydrothermal reaction of chromium(III) nitrate nonahydrate salt with EDTA as an organic ligand. The prepared MOF was investigated by PXRD, BET, ... ...

    Abstract Herein, we reported an efficient and novel metal-organic framework (MOF) that was designed and fabricated via hydrothermal reaction of chromium(III) nitrate nonahydrate salt with EDTA as an organic ligand. The prepared MOF was investigated by PXRD, BET, SEM, EDS, FT-IR, and X-ray mapping techniques. N
    Language English
    Publishing date 2024-01-26
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c05294
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  3. Article ; Online: Analysis of an Adaptive Periodic Low-Frequency Wave Filter Featuring Magnetorheological Elastomers.

    Jafari, Hamid / Sedaghati, Ramin

    Polymers

    2023  Volume 15, Issue 3

    Abstract: This study aims to enhance and tune wave-propagation properties (Bandgaps) of periodic structures featuring magnetorheological elastomers (MREs). For this purpose, first, a basic model of periodic structures (square unit cell with cross-shaped arms), ... ...

    Abstract This study aims to enhance and tune wave-propagation properties (Bandgaps) of periodic structures featuring magnetorheological elastomers (MREs). For this purpose, first, a basic model of periodic structures (square unit cell with cross-shaped arms), which does not possess noise filtering properties in the conventional configuration, is considered. A passive attenuation zone is then proposed by adding a cylindrical core mass to the center of the conventional geometry and changing arm angles, which permitted new bandgap areas. It was shown that better wave-filtering performance may be achieved by introducing a large radius of the cylindrical core as well as low negative cross-arm angles. The modified configuration of the unit cell was subsequently utilized as the basic model for the development of magnetoactive metamaterial using a MRE capable of varying the bandgaps areas upon application of an external magnetic field. The finite element model of the proposed MRE-based periodic unit cell was developed, and the Bloch theorem was employed to systematically investigate the ability of the proposed adaptive periotic structure to attenuate low-frequency noise and vibration. Results show that the proposed MRE-based periodic wave filter can provide wide bandgap areas which can be adaptively changed and tuned using the applied magnetic field. The findings in this study can provide an essential guide for the development of novel adaptive periodic structures to filter low-frequency noises in the wide frequency band.
    Language English
    Publishing date 2023-01-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym15030735
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  4. Article ; Online: Analysis of an Adaptive Periodic Low-Frequency Wave Filter Featuring Magnetorheological Elastomers

    Hamid Jafari / Ramin Sedaghati

    Polymers, Vol 15, Iss 735, p

    2023  Volume 735

    Abstract: This study aims to enhance and tune wave-propagation properties (Bandgaps) of periodic structures featuring magnetorheological elastomers (MREs). For this purpose, first, a basic model of periodic structures (square unit cell with cross-shaped arms), ... ...

    Abstract This study aims to enhance and tune wave-propagation properties (Bandgaps) of periodic structures featuring magnetorheological elastomers (MREs). For this purpose, first, a basic model of periodic structures (square unit cell with cross-shaped arms), which does not possess noise filtering properties in the conventional configuration, is considered. A passive attenuation zone is then proposed by adding a cylindrical core mass to the center of the conventional geometry and changing arm angles, which permitted new bandgap areas. It was shown that better wave-filtering performance may be achieved by introducing a large radius of the cylindrical core as well as low negative cross-arm angles. The modified configuration of the unit cell was subsequently utilized as the basic model for the development of magnetoactive metamaterial using a MRE capable of varying the bandgaps areas upon application of an external magnetic field. The finite element model of the proposed MRE-based periodic unit cell was developed, and the Bloch theorem was employed to systematically investigate the ability of the proposed adaptive periotic structure to attenuate low-frequency noise and vibration. Results show that the proposed MRE-based periodic wave filter can provide wide bandgap areas which can be adaptively changed and tuned using the applied magnetic field. The findings in this study can provide an essential guide for the development of novel adaptive periodic structures to filter low-frequency noises in the wide frequency band.
    Keywords adaptive metamaterials ; magnetorheological elastomers (MREs) ; wave propagation ; wave filters ; periodic structures ; Organic chemistry ; QD241-441
    Subject code 535
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Collapse of the Metropol Building: Recurring Man-Made Disasters in Iran, 2022.

    Heidari, Mohammad / Jafari, Hamid / Nohi, Seyede Irandokht

    Disaster medicine and public health preparedness

    2023  Volume 17, Page(s) e414

    MeSH term(s) Humans ; Iran ; Disasters ; Disaster Planning
    Language English
    Publishing date 2023-05-02
    Publishing country United States
    Document type Letter
    ZDB-ID 2375268-3
    ISSN 1938-744X ; 1935-7893
    ISSN (online) 1938-744X
    ISSN 1935-7893
    DOI 10.1017/dmp.2023.46
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  6. Article ; Online: A preliminary study on heavy metal monitoring in soil and guar (Cyamopsis tetragonoloba) biomass amended with sewage sludge.

    Sodaeizadeh, Hamid / Karimian, Ali Akbar / Jafari, Samira Hossein / Arani, Asgare Mosleh

    Environmental monitoring and assessment

    2024  Volume 196, Issue 2, Page(s) 201

    Abstract: Applying sewage sludge in agricultural soils is an interesting source of organic matter. This study aimed to monitor concentrations of heavy elements in soil and guar plants, which can pose a risk to the health of humans and animals if they enter the ... ...

    Abstract Applying sewage sludge in agricultural soils is an interesting source of organic matter. This study aimed to monitor concentrations of heavy elements in soil and guar plants, which can pose a risk to the health of humans and animals if they enter the food chain through the soil-plant system. The experiment revealed that applying sludge increased the amount of organic matter, total nitrogen, potassium, and phosphorus in the soil. Additionally, the concentration of heavy metals such as Pb, Co, Cr, Ni, Cu, and Zn in all treatments remained below the permissible limits for soil. The highest plant height and plant dry weight were recorded in the sludge and sludge + fertilizer treatments. The dry weight of the guar varied from 629 g m
    MeSH term(s) Animals ; Humans ; Cyamopsis ; Soil ; Biomass ; Sewage ; Fertilizers ; Environmental Monitoring ; Metals, Heavy
    Chemical Substances Soil ; Sewage ; Fertilizers ; Metals, Heavy
    Language English
    Publishing date 2024-01-25
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 782621-7
    ISSN 1573-2959 ; 0167-6369
    ISSN (online) 1573-2959
    ISSN 0167-6369
    DOI 10.1007/s10661-024-12337-3
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    Z 5186: Show issues

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  7. Article ; Online: Angiosarcoma of gallbladder, a literature review.

    Salehi, Mahsa / Rehman, Shafi / Davis, Sissmol / Jafari, Hamid Reza

    Journal of medical case reports

    2024  Volume 18, Issue 1, Page(s) 62

    Abstract: Background: Angiosarcoma of the gallbladder is a rare diagnostic entity rarely encountered by pathologists and has rarely been reported in literature. This review aimed to examine the clinicopathological features, immunohistochemistry, treatment, and ... ...

    Abstract Background: Angiosarcoma of the gallbladder is a rare diagnostic entity rarely encountered by pathologists and has rarely been reported in literature. This review aimed to examine the clinicopathological features, immunohistochemistry, treatment, and outcomes of gallbladder angiosarcoma.
    Methods: A search of the PubMed, Science Direct and Google Scholar was done with the search terms ("angiosarcoma" OR "angiosarcomas") AND ("gallbladder" OR "gallbladders"). Based on inclusion and exclusion criteria, only case reports could be used for this review.
    Result: 8 case reports were chosen in the end for analysis. The mean age of the patients at presentation was 65 years. It was most frequently observed in males. Abdominal pain and palpable mass were the most commonly reported symptoms. Cholelithiasis and anemia were also reported. On histopathology morphologically epithelioid appearance of angiosarcoma was evident. Cytokeratin (CK) AE1/AE3, Von willebrand factor, Factor VIII antigen, Vimentin, CD31 were positive. Meanwhile, UEA, CD34, CD117, S-100, Keratin, EMA, and CEA showed negative outcome. Surgery was the preferred method of treatment and a mean 10-months follow-up was done.
    Conclusion: Despite the unavailability of convincing data, histological and immunohistochemical analyses play a major role in the diagnosis of gallbladder angiosarcoma. Nevertheless, more comprehensive clinical studies are required to provide universal guidelines for the treatment and diagnosis of angiosarcoma of the gallbladder.
    MeSH term(s) Aged ; Humans ; Male ; Gallbladder Neoplasms/diagnosis ; Gallbladder Neoplasms/surgery ; Hemangiosarcoma/diagnosis ; Hemangiosarcoma/surgery ; Immunohistochemistry ; Female
    Language English
    Publishing date 2024-01-31
    Publishing country England
    Document type Review ; Case Reports ; Journal Article
    ZDB-ID 2269805-X
    ISSN 1752-1947 ; 1752-1947
    ISSN (online) 1752-1947
    ISSN 1752-1947
    DOI 10.1186/s13256-023-04323-z
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  8. Article: Utero-ovarian low grade endometrial stromal sarcoma, a case report.

    Salehi, Mahsa / Sheidaei, Somayeh / Jafari, Hamid Reza / Jafari, Afrooz

    International journal of surgery case reports

    2023  Volume 106, Page(s) 108296

    Abstract: Introduction: Endometrial stromal sarcoma (ESS) is a rare malignancy of uterine in middle aged women. There are numerous subtypes for ESS which share the same clinical picture of uterine bleeding and pelvic pain. Consequently, diagnosis and treatment ... ...

    Abstract Introduction: Endometrial stromal sarcoma (ESS) is a rare malignancy of uterine in middle aged women. There are numerous subtypes for ESS which share the same clinical picture of uterine bleeding and pelvic pain. Consequently, diagnosis and treatment modalities of LG-ESS with metastasis are challenging. However, both molecular and immunological study of samples can be useful.
    Case presentation: In this case study, we report a 52-year-old woman presenting with the chief complaint of unusual uterine bleeding. There was no specific finding in her past medical history. The CT study revealed enlarged bilateral ovary with a significantly large left ovarian mass and suspicious mass in uterus. By the diagnosis of ovarian mass, patient went under total abdominal hysterectomy with bilateral salpingo-oophorectomy (BSO), greater omentectomy, and appendectomy followed by post-op hormone therapy. Her follow-up was uneventful. The IHC and pathological study of samples revealed incidental LG-ESS uterus mass with metastasis to ovaries despite her primary diagnosis.
    Discussion: LG-ESS has low metastasis rate. Surgical modalities and neoadjuvant therapies are recommended base on the stage of ESS. In the following study, we represent a case of incidental LG-ESS with bilateral ovarian invasion who was initially diagnosed as an ovarian mass.
    Conclusion: Our patient was successfully managed by surgical intervention. Despite scarcity of LG-ESS, it is advised to consider LG-ESS as a differential diagnosis in management of patients with a uterus mass with bilateral ovarian involvement.
    Language English
    Publishing date 2023-05-04
    Publishing country Netherlands
    Document type Case Reports
    ISSN 2210-2612
    ISSN 2210-2612
    DOI 10.1016/j.ijscr.2023.108296
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  9. Article ; Online: Dynamic roles of small RNAs and DNA methylation associated with heterosis in allotetraploid cotton (Gossypium hirsutum L.).

    Hamid, Rasmieh / Jacob, Feba / Ghorbanzadeh, Zahra / Jafari, Leila / Alishah, Omran

    BMC plant biology

    2023  Volume 23, Issue 1, Page(s) 488

    Abstract: Background: Heterosis is a complex phenomenon wherein the hybrids outperform their parents. Understanding the underlying molecular mechanism by which hybridization leads to higher yields in allopolyploid cotton is critical for effective breeding ... ...

    Abstract Background: Heterosis is a complex phenomenon wherein the hybrids outperform their parents. Understanding the underlying molecular mechanism by which hybridization leads to higher yields in allopolyploid cotton is critical for effective breeding programs. Here, we integrated DNA methylation, transcriptomes, and small RNA profiles to comprehend the genetic and molecular basis of heterosis in allopolyploid cotton at three developmental stages.
    Results: Transcriptome analysis revealed that numerous DEGs responsive to phytohormones (auxin and salicylic acid) were drastically altered in F1 hybrid compared to the parental lines. DEGs involved in energy metabolism and plant growth were upregulated, whereas DEGs related to basal defense were downregulated. Differences in homoeologous gene expression in F1 hybrid were greatly reduced after hybridization, suggesting that higher levels of parental expression have a vital role in heterosis. Small RNAome and methylome studies showed that the degree of DNA methylation in hybrid is higher when compared to the parents. A substantial number of allele-specific expression genes were found to be strongly regulated by CG allele-specific methylation levels. The hybrid exhibited higher 24-nt-small RNA (siRNA) expression levels than the parents. The regions in the genome with increased levels of 24-nt-siRNA were chiefly related to genes and their flanking regulatory regions, demonstrating a possible effect of these molecules on gene expression. The transposable elements correlated with siRNA clusters in the F1 hybrid had higher methylation levels but lower expression levels, which suggest that these non-additively expressed siRNA clusters, reduced the activity of transposable elements through DNA methylation in the hybrid.
    Conclusions: These multi-omics data provide insights into how changes in epigenetic mechanisms and gene expression patterns can lead to heterosis in allopolyploid cotton. This makes heterosis a viable tool in cotton breeding.
    MeSH term(s) Hybrid Vigor/genetics ; DNA Methylation ; Gossypium/genetics ; DNA Transposable Elements ; Plant Breeding ; Gene Expression Profiling ; RNA, Small Interfering ; Gene Expression Regulation, Plant
    Chemical Substances DNA Transposable Elements ; RNA, Small Interfering
    Language English
    Publishing date 2023-10-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2059868-3
    ISSN 1471-2229 ; 1471-2229
    ISSN (online) 1471-2229
    ISSN 1471-2229
    DOI 10.1186/s12870-023-04495-2
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  10. Article ; Online: Dosimetry characteristics of Epoxy/MWCNT nanocomposite in the field of gamma-rays: Effect of thickness.

    Alipour, Mehdi / Jafari, Hamid / Malekie, Shahryar / Mosayebi, Armin

    Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

    2023  Volume 200, Page(s) 110982

    Abstract: Polymer-carbon nanostructures have been used as gamma-ray dosimeters. The thickness of the sensitive volume material plays an important role in the determination of the dosimetry response. In this work, the thickness effect of a real-time dosimeter based ...

    Abstract Polymer-carbon nanostructures have been used as gamma-ray dosimeters. The thickness of the sensitive volume material plays an important role in the determination of the dosimetry response. In this work, the thickness effect of a real-time dosimeter based on the Epoxy/Multi-walled carbon nanotube (MWCNT) nanocomposite was investigated. The amount of electrical percolation threshold (EPT) for Epoxy/MWCNT nanocomposite was initially simulated using the finite element method. Then, the 0.1 MWCNT wt% nanocomposite was fabricated using a solution method with three thicknesses of 1, 2, and 3 mm. FESEM images demonstrated a good dispersion state of the inclusions into the Epoxy matrix. The samples were irradiated by gamma-rays of Co-60 source over the dose rates of 25-166 mGy/min. In addition, dosimetric characteristics were performed, including linearity, bias-polarity, angular dependence, energy dependence, field size, and repeatability. Results revealed that with increasing the thickness, the dosimetry response was enhanced remarkably.
    Language English
    Publishing date 2023-08-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1142596-9
    ISSN 1872-9800 ; 0883-2889 ; 0969-8043
    ISSN (online) 1872-9800
    ISSN 0883-2889 ; 0969-8043
    DOI 10.1016/j.apradiso.2023.110982
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    In stock of ZB MED Cologne/Königswinter

    Ue I Zs.279: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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