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Hassan Hosseini

Bio: Hassan Hosseini is an academic researcher from University of Tehran. The author has contributed to research in topics: Agency (philosophy) & Ethnic group. The author has an hindex of 2, co-authored 4 publications receiving 30 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, NiFe2O4−MWCNTs/epoxy composites were synthesized by the combined precipitation-hydrothermal method in 1.30 wt.% of nanoparticles.
Abstract: Appl Organometal Chem. 2018;e4294. https://doi.org/10.1002/aoc.4294 In order to make a microwave absorbent material with good dielectric and magnetic properties, well dispersed microwave absorbing hybrid epoxy polymer composites containing nickel doped Fe3O4 nanocrystals coated on carbon nanotubes (NiFe2O4‐MWCNTs/epoxy) were synthesized by the combined precipitation‐hydrothermal method in 1‐30 wt.% of nanoparticles. Nickel possess well interaction with microwave radiation and represents fine electromagnetic interference (EMI) shielding and by dopping it into ferrite spinel structures, does not show any tendency to oxidation. Well‐dispersed NiFe2O4–MWCNTs/epoxy nanocomposite prepared by new in‐situ polymerization method. First, NiFe2O4–MWCNT nanoparticles ultrasonicated in acetone and after mixing with epoxy resin ultrasonicated again. Finally, hardner added to the composite and tuned temperature for evaporating solvent. X‐ray diffraction (XRD) and energy dispersive spectroscopy (EDS) confirmed the synthesizing NiFe2O4 nanoparticles. Saturation magnetization value of NiFe2O4‐MWCNTs is about 29 emu/g with very low remanence and coercivity content, which revealed that the NiFe2O4‐MWCNTs is ferromagnetic nanocrystal. Transmission electron microscopy (TEM) used to characterize the distribution of NiFe2O4 nanocrystals on the surface of MWCNTs. The TEM images show that NiFe2O4 nanocrystals have a mean size of 12 nm, and completely coated on the exterior surface of MWCNTs. The obtained results of reflection loss revealed that the maximum values of reflection loss of the NiFe2O4‐MWCNTs/epoxy increase by enhancing the content of nanoparticles until 10 wt.% and decreases in 30 wt.%.

34 citations

DOI
01 Jan 2020
TL;DR: A study of the rhetoric of the Nation of Islam produced on the Islamic Republic of Iran as presented in the organization's most important outlet, the Finalcall.com, shows that the NOI utilizes resonance, opinion leaders, and particular language in order to maximize the effect of its propaganda regarding Iran on its target audience and to reinforce ideological, emotional closeness with the Iranian nation as mentioned in this paper.
Abstract: When the Nation of Islam was first established in 1930 by Wallace Fard Muhammad, it managed to attract a segment of African Americans and persuade them to convert to Islam as taught by the organization. Despite the fact that the Nation of Islam has walked through a path of modifications and controversies, to this date it continues to attract African Americans in the United States. In fact, a significant number of well-known African Americans converted to Islam through the Nation of Islam. Drawing from Jowett’s neutral definitions of propaganda, this paper employs Jowett and O’Donnell’s 10-step propaganda analysis to examine how the Islamic Republic of Iran is presented in the rhetoric of the Nation of Islam. A study of the rhetoric of the Nation of Islam produced on the Islamic Republic of Iran as presented in the organization’s most important outlet, the Finalcall.com, shows that the NOI utilizes resonance, opinion leaders, and particular language in order to maximize the effect of its propaganda regarding Iran on its target audience and to reinforce ideological, emotional closeness with the Iranian nation.

3 citations

Posted ContentDOI
15 Feb 2022
TL;DR: This model of LC neurons predicts that repeated or long-lasting episodes of high neuronal activity induce a bystander-inhibition that reduces the spike rate in neighboring neurons at distances smaller than 25 micrometers, which can guide future experimental approaches to test this phenomenon and its physiological consequences.
Abstract: The Locus coeruleus (LC) modulates various neuronal circuits throughout the brain. Its unique architectural organization encompasses a net of axonal innervation that spans the entire brain; while its somatic core is highly compact. Recent research revealed an unexpected cellular input specificity within the nucleus that can give rise to various network states that either broadcast NE signals throughout the brain or pointedly modulate specific brain areas. Such adaptive input-output functions likely surpass our existing network models that build upon a given synaptic wiring configuration between neurons. As the distances between noradrenergic neurons in the core of the LC are unusually small, neighboring neurons could theoretically impact each other via volume transmission of NE. We therefore set out to investigate such bystander-inhibition via noradrenergic alpha2-receptors through a computational LC neuron model. We validate our model of LC neurons through comparison with experimental patch-clamp data and identify key variables that impact bystander-inhibition of neighboring LC neurons. Our simulation confirms a reliable autoinhibition of LC neurons after episodes of high neuronal activity that continue even after neuronal activity subsided. Also, dendro-somatic synapses inhibit spontaneous spiking in the somatic compartment of connected neurons in our model. We determined the exact position of hundreds of LC neurons in the mouse brain stem via a tissue clearing approach and based on this, further determined that 25 percent of noradrenergic neurons have a neighboring LC neuron within less than a 25-micrometers radius. By modeling NE diffusion, we estimate that more than 15 percent of alpha2-adrenergic receptors fraction can bind NE within such diffusion radius. Our spike model of LC neurons predicts that repeated or long-lasting episodes of high neuronal activity induce a bystander-inhibition that reduces the spike rate in neighboring neurons at distances smaller than 25 micrometers.As these volume-mediate neighboring effects are challenging to test with the current methodology, our findings can guide future experimental approaches to test this phenomenon and its physiological consequences.

1 citations

DOI
01 Jan 2018
TL;DR: The relationship between ethnic and faith communities in the United States and domestic forces relating to a converging and diverging social contract on the one hand, and US foreign, security and military policies in national, regional and global contexts on the other hand, constitutes the key focus of this paper and the ongoing research upon which it is based as discussed by the authors.
Abstract: The relationship between ethnic and faith communities in the United States and domestic forces relating to a converging and diverging social contract on the one hand, and US foreign, security and military policies in national, regional and global contexts on the other hand, constitutes the key focus of this paper and the ongoing research upon which it is based. Theories related to American ethnicity provide the theoretical framework for the discussion. These include Assimilationism, Ethnic Pluralism and Ethnic Conflict Theory. These theories help explain the prevalent narratives and assumptions concerning Muslims in the US. Ethnic and faith communities and groups have at times played significant and important roles in American national security and foreign policy. The power and influence of some ethnic and faith communities living inside the United States in relation to national security and foreign policies is well documented. These groups are overtly and covertly lobbying for national and foreign policy goals, creating a nexus and axis between domestic and foreign and national security policies. In the 21 century and in the post 9-11 world, the US administration’s focus, lobbying and influence in ethnic and faith communities living inside the US in the service of its foreign, military and national security policies has been overlooked. Ethnic and faith communities in this new era and environment are at the center and core of this relationship.

1 citations

DOI
01 Jan 2019
TL;DR: The social contract has been about rights and responsibilities in human societies as discussed by the authors, but it has not been about individual and collective levels of responsibility and rights at individual or collective levels in social networks.
Abstract: The social contract has been about rights and responsibilities in human societies. Facebook and its role in manufacturing and sustaining a global social contract, a new “we” is clearly one of the research areas that needs more attention. A new “we” is coming of age in the new age of connectivity and communication with a new outlook toward responsibility and rights at individual and collective levels. Facebook purports to build a new world based on connection and communication which is based on progress and prosperity. However, a fundamental factor and feature of Facebook that needs attention and more research is that people and users are becoming increasingly lonely, separated and independent from each other in this process while connecting and communicating with one another. This new social contract and “we” thus have the new features of the relationship between the human agency and his/her social structures. Cyberspace is the product of human agency and clearly creates and sustains a specific social structure. This research seeks to study the relationship between human agency, changing technical tools of communication and connection and emerging and evolving social structures and social contracts. Bandura’s “social cognitive theory” (2006) rejects a conflict and dichotomy between agency and social structure. As agency helps to build new social structures after destroying the old ones these new structures create and sustain a new social contract and “we” with a new sense of responsibility, obligations, and rights.

Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors used ICP and conductive fillers incorporated in conductive polymer-based composites (CPC) to facilitate the research in electromagnetic interference (EMI) s...
Abstract: Intrinsically conducting polymers (ICP) and conductive fillers incorporated conductive polymer-based composites (CPC) greatly facilitate the research in electromagnetic interference (EMI) s...

457 citations

Journal ArticleDOI
TL;DR: In this article, a brief presentation of ferrites and among them are spinel ferrite and hexagonal ferrite is presented, and the main mechanism to absorb the microwaves (e.g. dielectric and magnetic losses) and finally discusses the microwave absorbing characteristics of ferites and their composites in terms of matching frequency, reflection loss values, and absorption bandwidth.

155 citations

Journal ArticleDOI
TL;DR: In this paper, magnetically recyclable spinel nickel ferrite (NiFe2O4) and multi-walled carbon nanotubes (MWCNTs) were successfully synthesized by one-step hydrothermal treatment.

90 citations

Journal ArticleDOI
Yan Guo1, Dedong Wang1, Tiantian Bai1, Hu Liu1, Yanjun Zheng1, Chuntai Liu1, Changyu Shen1 
16 Jun 2021
TL;DR: In this article, NiFe2O4/MXene nanosheets with homogeneously anchored NiFeO4 nanoparticles were prepared using facial electrostatic self-assembling and freeze-drying technique.
Abstract: Two-dimensional Ti3C2Tx MXene nanosheets with excellent electrical conductivity and layered structure have shown great promising in electromagnetic wave (EMW) absorption. Here, MXene nanosheets with homogeneously anchored NiFe2O4 nanoparticles (NiFe2O4/MXene) were prepared using facial electrostatic self-assembling and freeze-drying technique. Interestingly, the minimum reflection loss (RLmin) of paraffin wax-based composites with only 3% NiFe2O4/MXene reached as low as − 41.83 dB, showing much stronger EMW absorption property than that of MXene nanosheets (RLmin = − 5.03 dB) at the same loading level. This can be mainly ascribed to the existence of NiFe2O4 nanoparticle that can effectively prevent the self-stacking of MXene nanosheets, causing improved conduction loss. Besides, large amounts of heterogeneous interfaces between NiFe2O4 nanoparticle and MXene can also produce additional interface polarization loss. More importantly, magnetic loss arising from the magnetic NiFe2O4 nanoparticle is beneficial for good impedance matching, enabling more EMW to enter into the interior of composites to be dissipated. Furthermore, effective absorption bandwidth in the frequency range of 3.44–18 GHz can be achieved by adjusting the matching thickness of composites with 5% NiFe2O4/MXene. This study paves a way for preparing high-performance MXene-based EMW absorber at ultralow loading level. Electrostatic self-assembled NiFe2O4/MXene nanocomposites exhibit excellent electromagnetic wave absorption performance based on the synergistic effect of bifillers

77 citations

Journal ArticleDOI
TL;DR: The authors views the Nation of Islam as a millenarian movement that underwent a fateful transformation when its prophecies concerning the end failed, and the result was the transformation of the Nation, after death of Elijah Muhammad, into two quite different entities.
Abstract: This absorbing clearly written study views the Nation of Islam as a millenarian movement that underwent a fateful transformation when its prophecies concerning the end failed. The result was the transformation of the Nation, after death of Elijah Muhammad, into two quite different entities. The first is the American Muslim Mission...led by Wallace D. Muhammad...The second is reconstituted Nation of Islam under the guidance of the controversial Minister Louis Farrakhan...a timely and convincing account that sheds light on an important era in the history of African-American religion.

66 citations