Vladimir Zaichick
Vladimir Zaichick
Institution: Radionuclide Diagnostics Department, Medical Radiological Research Centre,
Email: vzaichick@gmail.com
Role of chemical elements (ChE) in etiology and pathogenesis of Riedel’s disease (RD) is unclear. The aim of this exploratory study was to assess whether
there were significant changes in thyroid tissue levels of eight ChE (Br, Ca Cl, I, K, Mg, Mn, and Na) are present in the fibrotic transformed...
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Role of chemical elements (ChE) in etiology and pathogenesis of Riedel’s disease (RD) is unclear. The aim of this exploratory study was to assess whether
there were significant changes in thyroid tissue levels of eight ChE (Br, Ca Cl, I, K, Mg, Mn, and Na) are present in the fibrotic transformed thyroid. Eight
ChE of thyroid tissue were determined in 6 patients with RD. The control group included thyroid tissue samples from 105 healthy individuals. Measurements
were conducted using non-destructive instrumental neutron activation analysis with high-resolution spectrometry of short-lived radionuclides. Reduced
mean values of Ca and I content in 6.3 and 6.7 times, respectively, while elevated level of Br in 5.1 times were found in thyroid with RD in comparison with
normal level. Because considerable changes in some ChE contents in tissue of thyroid with RD were found, it is reasonable to assume that the levels of these
ChE in affected thyroid tissue can be used as RD markers. However, this topic needs additional studies.
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Posted 2 years ago
Aamir Jalal Al-Mosawi
Aamir Jalal Al-Mosawi
Institution: Baghdad Medical City and Iraqi Ministry of Health
Email: almosawiAJ@yahoo.com
Background: The year 2020 witnessed the rapid spread of covid-19 pandemic in Iraq and in almost all the countries in the world. This spread has created a serious health crises and a public health emergency in Iraq and throughout the world. Throughout the world, healthcare systems have been negativel...
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Background: The year 2020 witnessed the rapid spread of covid-19 pandemic in Iraq and in almost all the countries in the world. This spread has created a serious health crises and a public health emergency in Iraq and throughout the world. Throughout the world, healthcare systems have been negatively
influenced by the pandemic and experienced unexpected changes. We have previously provided several descriptions of the Iraq health care system from its evolution. However, little is known about the health care system in Iraq during the first year of the coves pandemic. The aim of this paper is provide a description of the healthcare system in Iraq during the year 2020, the first year of covid-19 global pandemic.
Materials and Methods: The available unpublished and published data about the Iraqi healthcare system during the first year of covid-19 pandemic, the
year 2020 were examined. The data included more than 100 relevant unpublished and published information documents including journal articles, books, official reports of the Iraqi Ministry of Planning and Iraqi Ministry of Health. In addition, relevant useful data available at internet web sites were also
reviewed. The available relevant data were classified into categories including; demographic data relevant to healthcare, Data related to covid-19 disease in Iraq, data related to the organizational structure of the healthcare system, data related to national healthcare policies including national healthcare mission, vision, strategic goals and plans, data related to healthcare system financing, data about healthcare services delivery, data about the workforce in the Iraq
healthcare system, data related to child health and maternal, data about notifiable infectious disease, data about chronic disorders and the main causes of morbidity and mortality, and data about medical education and healthcare education. Many relevant healthcare data for three provinces (The Kurdish provinces in the north of Iraq) of the eighteen provinces in Iraq were not available in English or Arabic.
Results: The population of Iraq in 2020 was estimated at 40.150.174 (20.284.823 males and 19.865.351 females). During the year 2020, 595291 cases of
covid-19 disease were registered by the Iraqi Ministry of Health. 12813 (2.15%) patients died and 537841 (90.3%) patients experienced recovery. The organizational structure of the Iraq health system, the backbone of the Iraq healthcare system witnessed no important change from the description before
covid-19 global pandemic in 2019.
The declared mission and vision of the Iraqi Ministry of Health for the year 2020 were the same mission and vision of the Iraqi Ministry of Health that were declared in 2018. In 2020, the Iraqi Ministry of Health declared a strategic plan which included a vision and mission statements for the health information system. The first year of covid-19 pandemic in Iraq was not associated with an important increase in the number of primary healthcare centers. However, there was little increase in the number of governmental hospitals. Surprisingly, the bed occupancy rate of governmental hospitals during the first year of the
pandemic was lower than the bed occupancy rate during the two years before the pandemic. The total number of hospitalized patients in 2020 was lower than the previous four years, but the mortality rate per 1000 hospitalized patients was significantly higher in 2020 than the previous four years.
Conclusion: Covid-19 disease in Iraq was associated with a significant mortality during the year 2020. It actually changed the previously reported national mortality pattern as covid-19 has become the second most common cause of death in Iraq. Contradictory, to the general belief that mortality associated with covid-19 disease was generally restricted to the older age groups, 117 children under the age of ten years died because of covid-19 disease in 2020. This number of childhood deaths suggests the need to consider vaccination of the younger age groups and to perform the relevant research. Covid-19 disease has emerged as a new notifiable infectious disease in Iraq and throughout the world; therefore, it changed the pattern of notifiable infectious diseases in Iraq.
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Posted 2 years ago
Arpita Biswas
Arpita Biswas
Institution: Department of Chemistry, Shibpur Dinobundhoo Institution (College),
Email: abiswas83@gmail.com
Synthesis of Zincoxide nanoparticles (ZnO NPs) with definite size and shape and their
morphological characterization rationally is really a challenging aspect at present due to the ongoing
demand of these nanosize particles for their divergent use in different field of science and technology.
...
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Synthesis of Zincoxide nanoparticles (ZnO NPs) with definite size and shape and their
morphological characterization rationally is really a challenging aspect at present due to the ongoing
demand of these nanosize particles for their divergent use in different field of science and technology.
Reduction of Zinc acetate dihydrate by sodium hydroxide was performed to produce ZnO NPs by
following precipitation method. Here the whole reaction was completed in aqueous medium in low
temperature. To characterize the synthesized ZnO NPs some recent techniques like X-ray diffraction
study (XRD), Ultra-violet Visible (UV-Vis) spectroscopy, Field emission scanning electron microscopy
(FESEM), Transmission electron microscopy (TEM), Selected area electron diffraction (SAED) and
Electron diffraction X-ray (EDX) were used systematically.
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Posted 2 years ago
The relative velocity between objects with finite velocity affects the reaction
between them. This effect is known as general Doppler effect. The Laser Interferometer
Gravitational-Wave Observatory (LIGO) discovered gravitational waves and found their
speed to be equal to the speed of light c. Gr...
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The relative velocity between objects with finite velocity affects the reaction
between them. This effect is known as general Doppler effect. The Laser Interferometer
Gravitational-Wave Observatory (LIGO) discovered gravitational waves and found their
speed to be equal to the speed of light c. Gravitational waves are generated following
a disturbance in the gravitational field; they affect the gravitational force on an object.
Just as light waves are subject to the Doppler effect, so are gravitational waves. This
article explores the following research questions concerning gravitational waves: Is there
a linear relationship between gravity and velocity? Can the speed of a gravitational wave
represent the speed of the gravitational field (the speed of the action of the gravitational
field upon the object)? What is the speed of the gravitational field? What is the spatial
distribution of gravitational waves? Do gravitational waves caused by the revolution of
the Sun affect planetary precession? Can we modify Newton’s gravitational equation
through the influence of gravitational waves?
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Posted 2 years ago
Jacques Curely
Jacques Curely
Institution: Laboratoire Ondes et Matière d’Aquitaine, UMR 5798, University of Bordeaux,
Email: Jacques.curely@u-bordeaux.fr
:In earlier work, we previously established a formalism that allows to express the exchange
energy J vs. fundamental molecular integrals without crystal field, for a fragment A–X–B, where
A and B are 3d 1 ions and X is a closed-shell diamagnetic ligand. In this article, we recall this
formali...
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:In earlier work, we previously established a formalism that allows to express the exchange
energy J vs. fundamental molecular integrals without crystal field, for a fragment A–X–B, where
A and B are 3d 1 ions and X is a closed-shell diamagnetic ligand. In this article, we recall this
formalism and give a physical interpretation: we may rigorously predict the ferromagnetic (J < 0)
or antiferromagnetic (J > 0) character of the isotropic (Heisenberg) spin-spin exchange coupling.
We generalize our results to ndm ions (3 ≤ n ≤ 5, 1 ≤ m ≤ 10). By introducing a crystal field we
show that, starting from an isotropic (Heisenberg) exchange coupling when there is no crystal field,
the appearance of a crystal field induces an anisotropy of exchange coupling, thus leading to a z-z
(Ising-like) coupling or a x-y one. Finally, we discuss the effects of a weak crystal field magnitude
(3d ions) compared to a stronger (4d ions) and even stronger one (5d ions). In the last step, we are
then able to write the corresponding Hamiltonian exchange as a spin-spin one.
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Posted 2 years ago
Slawomira Hajduk
Slawomira Hajduk
Institution: Faculty of Engineering Management, Bialystok University of Technology,
Email: s.hajduk@pb.edu.pl
The effects of urban transport are highly concerning. The rapid urbanization and motorization in smart cities have a huge impact on sustainability. The goal of the paper is to analyse the smart
cities selected, in terms of the urban transport. This paper presents an overview of research works
pub...
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The effects of urban transport are highly concerning. The rapid urbanization and motorization in smart cities have a huge impact on sustainability. The goal of the paper is to analyse the smart
cities selected, in terms of the urban transport. This paper presents an overview of research works
published between 1991 and 2020 concerning urban transport and MCDM (multi-criteria decision
making). The author highlights the importance of decision-making criteria and their weight, as well as
techniques. Seven criteria and forty-four objects were used as the input of the approach. The entropy
weight method was used to compute the weight of each criterion. The TOPSIS (Technique for Order
Performance by Similarity to Ideal Solution) was applied to calculate the assessment and ranking of
transport performance for each smart city. Portland was found to be the best location for transport
enterprises and projects; Tbilisi was ranked last. The values of the relative closeness coefficient ranged
from 0.03504 to 0.921402. Finally, some suggestions for future research are discussed.
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Posted 2 years ago
Saman Hazany,
Saman Hazany
Institution: Keck School of Medicine of USC Radiology Department, Neuroradiology Division,
Email: samanh26@gmail.com
Brittany DeClouette
Brittany DeClouette
Institution: Keck School of Medicine of USC
Email: samanh26@gmail.com
In patients with Medial Temporal Lobe Epilepsy (MTLE), more severe impairment in the ipsilateral than
the contralateral hemisphere white matter tracts, including Superior Longitudinal Fasciculus (SLF), are
demonstrated on diffusion tensor imaging (DTI). Many clinicians and researchers conclude tha...
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In patients with Medial Temporal Lobe Epilepsy (MTLE), more severe impairment in the ipsilateral than
the contralateral hemisphere white matter tracts, including Superior Longitudinal Fasciculus (SLF), are
demonstrated on diffusion tensor imaging (DTI). Many clinicians and researchers conclude that drawing
regions of interest (ROI) in the white matter can demonstrate these asymmetries. In this study we
demonstrate that fractional anisotropy (FA) values derived from manually drawing ROI’s on diffusion
tensor imaging (DTI) of SLF differ between the side of seizure onset compared to the contralateral side
in each individual patient with MTLE does not demonstrate these previous conclusions. We therefore
believe that clinicians should recognize that this method of measurement can be inaccurate and should
not be interpreted independently
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Posted 2 years ago
Phuong Le Dang,
Phuong Le Dang
Institution: iversity Medical Center at Ho Chi Minh City, 215 Hong Bang Street, Ward 11, District 5, Ho Chi Minh City, Viet Nam
Email: phuong.dl@umc.edu.vn
Anh Minh Nguyen
Anh Minh Nguyen
Institution: iversity Medical Center at Ho Chi Minh City, 215 Hong Bang Street, Ward 11, District 5, Ho Chi Minh City, Viet Nam
Email: anh.nm@umc.edu.vn
Introduction: Interlaminar Endoscopic Lumbar Disckectomy has been found to offer symptomatic alleviation
comparable to open disckectomy while reducing blood loss, postoperative discomfort, complications, hospital
stay, and narcotic use. General anesthesia decreases intraoperative stress, but surge...
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Introduction: Interlaminar Endoscopic Lumbar Disckectomy has been found to offer symptomatic alleviation
comparable to open disckectomy while reducing blood loss, postoperative discomfort, complications, hospital
stay, and narcotic use. General anesthesia decreases intraoperative stress, but surgeons may not be sure whether
they injure nerve roots. Free-run electromyography may protect nerve roots that are thought to be in danger from
surgery.
Methods: Patients with L4L5 or L5S1 lumbar disc herniation were treated with IELD. EMG was monitored via
needle electrodes in lateral vastus lateralis, anterior tibialis, abductor hallucis muscles. Surgeons were asked to
halt the surgery and adjust their manipulation right when abnormal EMG appeared on the screen. The severity of
signs and symptoms were noted pre- and post-operatively.
Results: In all 26 cases, the median of visual analogue scale (VAS) of low back pain was 4.5. That of radicular pain
was 7. Two patients had motor weakness at L4 or S1 muscles. One patient has sensory loss at L5 dermatome. The
level of disc herniation was 46% at L4L5 and 56% at L5S1. The complications included only superficial infection
in two patients that were effectively managed with antibiotics. During postoperative follow-up, all patients
recovered completely without any neurological deficit. f-EMG signal included uneventful (9 patients), burst/
spike (10 patients), A-train (3 patients, and C-train (4 patients)
Conclusion: Free-run EMG is a protective mean in IELD. All surgeons will profit from this technique in the early
stages of their learning curve. To examine the outcomes, further comparative research and prospective, ran-
domized, controlled trials should be undertaken.
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Posted 2 years ago
Pooja Kherwa,
Pooja Kherwa
Institution: Maharaja Surajmal Institute of Technology,
Email: info@res00.com
Poonam Bansal
Poonam Bansal
Institution: Maharaja Surajmal Institute of Technology,
Email: info@res00.com
The COVID-19 pandemic is the deadliest outbreak in our living memory. So, it is the need of hour
to prepare the world with strategies to prevent and control the impact of the pandemic. In this paper,
a novel semantic pattern detection approach in the COVID-19 literature using contextual clusteri...
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The COVID-19 pandemic is the deadliest outbreak in our living memory. So, it is the need of hour
to prepare the world with strategies to prevent and control the impact of the pandemic. In this paper,
a novel semantic pattern detection approach in the COVID-19 literature using contextual clustering
and intelligent topic modeling is presented. For contextual clustering, three level weights at term level,
document level, and corpus level are used with latent semantic analysis. For intelligent topic modeling,
semantic collocations using pointwise mutual information (PMI), and log frequency biased mutual
dependency (LBMD) are selected, and latent dirichlet allocation is applied. Contextual clustering
with latent semantic analysis presents semantic spaces with high correlation in terms at corpus level.
Through intelligent topic modeling, topics are improved in the form of lower perplexity and highly
coherent. This research helps in finding the knowledge gap in the area of COVID-19 research and
offered direction for future research.
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Posted 2 years ago
Mohammed Mikidadu
Mohammed Mikidadu
Institution: Department of Economics & Business Administration, Austin College,
Email: mmohammed@austincollege.edu
Objectives: The study investigated the relationship between electricity access and infant mortality at the sub-
national level in Ghana, controlling for correlates such as birth interval, children living with both parents,
women’s education, and income distribution.
Methods: The study employed ...
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Objectives: The study investigated the relationship between electricity access and infant mortality at the sub-
national level in Ghana, controlling for correlates such as birth interval, children living with both parents,
women’s education, and income distribution.
Methods: The study employed a pooled cross‐section regression approach using data from the Ghana
Demographic and Health Survey (GDHS) for 10 administrative regions from 1993 to 2014. The GDHS is a
detailed data set that provides comprehensive information on households and their socio‐economic and demo-
graphic characteristics in Ghana.
Results: The results show that in regions with low incidence of infant mortality, a 10% improvement in elec-
tricity access reduces infant death by 11.8 per 1,000 live births, whereas in high mortality regions, improve-
ment in electricity access has no impact on infant death. Birth interval reduces the risk of infant death in
low mortality regions but not in high mortality regions. Children living with both parents have a high proba-
bility of survivorship in high mortality regions. Women’s median years of education lowers the likelihood of
infant death in high mortality regions but increases the likelihood in low mortality regions. Wealth distribution
is inconsequential for infant death in low mortality regions, but in high mortality regions, both the wealthiest
and the poorest experienced significant decline in infant death.
Conclusions: The findings underscore the fruitfulness of investigating the effects of electricity access and other
correlates on infant mortality at the subnational level. The study recommends that the provision of reliable
access to electricity is needed to improve infant mortality rates. However, policies that seek to improve access
to reliable electricity should be implemented together with health infrastructure development policies, espe-
cially in the regions with high infant mortality rates, for electricity access to have the desired effect
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Posted 2 years ago