Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
Hydroxyapatite-gelatin and calcium carbonate- gelatin nanocomposite scaffolds: Production, physicochemical characterization and comparison of their bioactivity in simulated body fluid
70
80
EN
Simin
Sharifi
0000-0002-3020-3779
Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
sharifi.ghazi@gmail.com
Farzaneh
Lotfipour
0000-0002-0774-9466
Food & Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
farzaneh.lotfipour@gmail.com
Mohammad Ali
Ghavimi
0000-0002-6638-2799
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
m_ghavimi@yahoo.com
Solmaz
Maleki Dizaj
0000-0003-4759-7222
Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
maleki.s.89@gmail.com
Shahriar
Shahi
0000-0003-4616-5145
Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
sshahriar32@gmail.com
Javad
Yazdani
0000-0002-5900-890X
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
ja_yazdani@yahoo.com
Masumeh
Mokhtarpour
0000-0003-2906-5847
Department of Physical Chemistry, University of Tabriz, Tabriz, Iran
masomeh64_m@yahoo.com
Rovshan
Khalilov
0000-0002-8684-1390
Department of Biophysics and Molecular Biology, Baku State University, Baku, Azerbaijan
hrovshan@hotmail.com
10.22034/ecc.2021.256060.1112
In this study, HAP-gelatin and CC-gelatin nanocomposite scaffolds, as bioactive inorganic materials, were synthesized successfully through a chemical precipitation procedure. Next, characterization of the prepared nanocomposite scaffolds was completed using scanning electron microscopy (SEM), dynamic light scattering (DLS), zeta-sizer (for zeta potential measurement), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Then, we soaked the generated nanocomposite scaffolds in the simulated body fluid (SBF) for several times to investigate and compare the bioactivity of these nanocomposites and determine the percent of weight loss. The rate of calcium ions dissolution in SBF media was determined utilizing atomic absorption spectroscopy (AAS). The findings of characterization showed that the preparation of nanocomposites was successful with monodispersed nanosized particles, uniform agglomerated morphology, crystalline form, and negative surface charge. According to the results of the bioactivity test, both nanocomposite scaffolds were of high bioactivity, corroborated well with the patterns of calcium release. Calcium ions released from the HAP-gelatin nanocomposite were higher than that of the CC-gelatin. However, the bioactivity of CC was comparable with well-known bioactive HAP material. Therefore, it could be a promising alternative for use compared with HAP, the preparation of which is more complicated and expensive.
Hydroxyapatite,Calcium Carbonate,Gelatin,nanocomposite scaffold,Bioactivity,SBF
https://www.echemcom.com/article_122503.html
https://www.echemcom.com/article_122503_dba1d32c315a624b0949a9e6878672a8.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
Covid-19 and its impact on livelihood: An Indian perspective
81
87
EN
Kumari
Akriti
0000-0001-6349-6304
School of Management, KIIT Deemed to be University (Institute of Eminence), Bhubaneswar, Orrisa, India
akriti0329@gmail.com
Ipseeta
Satpathy
0000-0002-0155-5548
School of Management, KIIT Deemed to be University (Institute of Eminence), Bhubaneswar, Orrisa, India
ipseeta@ksom.ac.in
B.C.M.
Patnaik
0000-0002-5979-0989
School of Management, KIIT Deemed to be University (Institute of Eminence), Bhubaneswar, Orrisa, India
bcmpatnaik@gmail.com
10.22034/ecc.2021.265210.1115
Covid-19 has had adverse impact on various sectors of the economy. India’s Corona epidemic started spreading at the fastest pace across the world, becoming the 3<sup>rd</sup> highest country with infected corona patients. If no further vaccines or measures are in place, it will be very difficult to stabilize the situation. The government is trying to manage the various challenges that are coming in their way through various economic packages and providing extra funds for healthcare sector. During the lockdown the informal sector suffered the maximum due to the job losses and food insecurity. The livelihood sector which includes agricultural, fishing, poultry, self-help groups and migrant workers are major sufferers in India. Unemployment level in India reached all-time high reaching 23.5 % in April after imposing nationwide lockdown to curb the spread of pandemic.
Healthcare Sector,Informal Sector,food insecurity,Livelihood,unemployment,migrant workers,self-help groups
https://www.echemcom.com/article_122792.html
https://www.echemcom.com/article_122792_e02e42cb81bc614dedff5fbe1777505a.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
Impact of COVID-19 on employees engagement and burnout: The case of IT companies
88
94
EN
Sadhna
Sudershana
0000-0003-0502-9411
Kalinga Institute of Industrial Technology , Bhubaneswar, Odisha, India
sadhnafca@kiit.ac.in
Ipseeta
Satpathy
0000-0002-0155-5548
Kalinga Institute of Industrial Technology , Bhubaneswar, Odisha, India
ipseeta@ksom.ac.in
B.C.M.
Patnaik
0000-0002-5979-0989
Kalinga Institute of Industrial Technology , Bhubaneswar, Odisha, India
bcmpatnaik@ksom.ac.in
10.22034/ecc.2021.266208.1117
Employees’ engagement or employees’ commitment is the most sought-after skill in employees for yielding maximum productivity at the work front as well as being happy at the personal front. There are many factors that affect engagement levels such as work culture, job satisfaction, remuneration, etc. However, 2020 brought another new factor, i.e. the impact of the Coronavirus pandemic on the lives of people around the globe. This lockdown introduced new modes of work in the form of remote working conditions. Accordingly, Covid19 has had a huge effect on the motivation levels of people and thereby impacted productivity. The objective of this study is to map the impact of this pandemic on the engagement levels of the employees in information technology companies. This research has adopted a descriptive survey method and has used both primary and secondary data to deduce results. The findings of this study can help organizations to adopt new methods to keep their employees committed towards their work during periods of crisis such as Cornona pandemic.
COVID-19,employees’ engagement,burnout,IT sector
https://www.echemcom.com/article_122793.html
https://www.echemcom.com/article_122793_d6457ca144e5b52154093fd455f770ad.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
In silico investigation of nanocarbon biosensors for diagnosis of COVID-19
95
102
EN
Kun
Harismah
Department of Chemical Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
kun.harismah@ums.ac.id
Mahmoud
Mirzaei
0000-0001-9346-4901
Biosensor Research Center, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
mahzaei@gmail.com
Muhammad
Dai
Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
m.dai@ums.ac.id
Zahra
Roshandel
Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
zararoshan5@gmail.com
Elham
Salarrezaei
Department of Biomaterials, Nanotechnology and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
e.salarrezaei@gmail.com
10.22034/ecc.2021.267226.1120
In this work, advantages of applications of nanocarbon materials were investigated for diagnosis purpose of coronavirus disease 2019 (COVID-19). To do so, interactions of four representative models of nanocarbon materials including carbon nanotube (CNT), carbon nanocone (CNC), carbon graphene (CGR), and carbon fullerene (CFR) were investigated against spike protein (SP) and main protease (MPO) macromolecular targets of coronavirus. The obtained results indicated that the structure of nanocarbon was important to show its functions for complex formation, in which the CNC ligand was seen to strongly interact with both of SP and MPO targets among other nanocarbon ligands. Additionally, CNC showed more flexibility of conformational relaxation against the target through molecular docking simulation processes. As a distinguished achievement of this work, nanocarbon materials could work for diagnosis purpose of COVID-19 with the best function for CNC to achieve the purpose. All results of this work were obtained based on employing the computer-based <em>in silico</em> approach at the lowest molecular scale including structural optimization and molecular docking simulation.
Nanocarbon,COVID-19,Coronavirus,In Silico,Diagnosis
https://www.echemcom.com/article_125213.html
https://www.echemcom.com/article_125213_d4996e863560784e4fa52417f335e7d6.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
Computing M-polynomial and topological indices of TUHRC4 molecular graph
103
109
EN
Faryal
Chaudhry
Department of Mathematics and Statistics, The University of Lahore, Lahore, 54000, Pakistan
chaudhryfaryal@gmail.com
Muhammad
Ehsan
Department of Mathematics and Statistics, The University of Lahore, Lahore, 54000, Pakistan
iloveblueeyes5511@gmail.com
Farkhanda
Afzal
0000-0001-5396-7598
MCS, National University of Sciences and Technology, Islamabad, Pakistan
farkhanda@mcs.edu.pk
Mohammad
Reza
Farahani
0000-0003-2969-4280
Department of Applied Mathematics, Iran University of Science and Technology, Tehran, Iran
mrfarahani88@gmail.com
Murat
Cancan
0000-0002-8606-2274
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
mcancan@yyu.edu.tr
Idris
Çiftçi
0000-0002-2698-0807
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
iciftci@yyu.edu.tr
10.22034/ecc.2021.269115.1124
Chemical graph theory has an important role in the development of chemical sciences. A graph is produced from certain molecular structure by means of applying several graphical operations. The local graph parameter is valency, which is defined for every vertex as the number associates with other vertices in a graph, for example an atom in a molecule. The demonstration of chemical networks and chemical compounds with the help of M-polynomials is a novel idea. The M-polynomial of different molecular structures help to compute several topological indices. A topological index is a numeric quantity that describes the whole structure of a molecular graph of the chemical compound and clarifies its physical features, chemical reactivates and boiling activities. In this paper we computed M-Polynomial and topological indices of TUHRC<sub>4</sub> Graph, then we recovered numerous topological indices using the M-polynomials.
Molecular Graph,Nanotube,tadpole,M-polynomial,TUHRC4,Topological indices
https://www.echemcom.com/article_126404.html
https://www.echemcom.com/article_126404_3fc84422632bd9cdbb03ce4376f21276.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
Evaluation of nurses' awareness of radiation safety principles in portable radiography in Kosar Hospital’s ICUs, Semnan, Iran
110
115
EN
Fatemeh
Ghanian
Student Research Committee, School of Allied Medical Sciences, Semnan University of Medical Sciences, Semnan, Iran
fatemehghanian68@gmail.com
Shoka
Shahriari
Student Research Committee, School of Allied Medical Sciences, Semnan University of Medical Sciences, Semnan, Iran
shahriarish1376@yahoo.com
Masoumeh
Yadollahi
0000-0000-000-0000
Department of Radiology, School of Allied Medical Sciences, Semnan University of Medical Sciences, Semnan, Iran
yadollahi.sbums@gmail.com
10.22034/ecc.2021.266279.1118
With due attention to increasing use of X-ray imaging techniques, raising the level of knowledge of employees in this regard can play an important role in reducing the frequency of genetic abnormalities and carcinogenesis caused by radiation in the community. The purpose of this study was to evaluate the level of awareness of nurses in intensive care units from radiation protection during portable radiography<strong>. </strong>In a descriptive cross-sectional study, 92 nurses working in intensive care units were evaluated. Data were collected by a two-part questionnaire including 4 questions about demographic information (age, sex, background and education) and 11 questions regarding radiation protection. Data were analyzed by SPSS software version 21 using t-test, ANOVA and Kruskal-Wallis tests. The significance level was less than 0.05 of participants, 38.9% had poor knowledge (score less than 5), 56.9% had moderate knowledge (score of 5 to 7) and 4.2% had good knowledge (score of 8 and more). The difference of mean score in male and female and between nurses with different educational levels was not significant (P=0.470 and 0.683, respectively). The mean score in personnel with different work history and age did not show significant difference (P=0.098 and 0.222, respectively). The level of knowledge from radiation protection was moderate and weak in our study. It seems that the provision of in-person training as well as educational brochures in shorter intervals have a good effect on personnel knowledge from radiation protection.
Radiation Protection,Portable radiography,Intensive Care Units
https://www.echemcom.com/article_126504.html
https://www.echemcom.com/article_126504_e6d56366eed368b6bfcb013e666e3dba.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
An overview of modified sensors with focus on electrochemical sensing of sulfite in food samples
116
138
EN
Majedeh
Bijad
0000-0002-6378-8937
Department of Food Science and Technology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
majedehbijad2020@gmail.com
Akbar
Hojjati-Najafabadi
Faculty of Materials, Metallurgy and Chemistry, School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
a_hojjati@yahoo.com
Hesam
Asari-Bami
Department of Chemistry, Science and Research Branch, Islamic Azad University, Mazandaran, Iran
hesam.assari@gmail.com
Sepideh
Habibzadeh
0000-0001-7545-0442
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran
spdh.hab@gmail.com
Issa
Amini
0000-0003-0586-6615
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran
issaamini5548@gmail.com
Farzaneh
Fazeli
0000-0003-4432-1933
Department of Biology, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran
seacorales@yahoo.com
10.22034/ecc.2021.268819.1122
Sulfite is used as preservatives to slow browning and discoloration in foods and beverages during preparation, storage and distribution. In various pharmaceutical and food industries, sulfite is utilized for inhibition of nonenzymatic and enzymatic browning. Also, in brewing industries, it acts as an antioxidizing and antibacterial agent. Several toxic and adverse reactions, including vitamin deficiency, hypersensitivity, and allergic diseases have been attributed to sulfites ingestion that may cause dysbiotic oral and gut microbiota events. Thus, the content of sulfite in foods must be controlled and monitored, and it is essential to find a specific, reproducible, and sensitive method to detect sulfite. Some analytical solutions are being tested to quantify sulfite. However, due to their advantage over traditional techniques, electroanalytical techniques are attracting much attention, because they are simple, fast, affordable, and sensitive to implement. In addition, modifying the electrodes controls the morphology and size that results in the miniaturization to be used in portable electro-chemical devices. Therefore, the present review addressed some articles on the electro oxidation of sulfite from the real samples with the use of various kinds of electro-chemical sensors.
Sulfite analysis,Modified electrodes,Voltammetry,Electrochemical sensors,Amperometry,portable kits
https://www.echemcom.com/article_126612.html
https://www.echemcom.com/article_126612_07f9ec87e15d7ffce81136cecd821f0c.pdf
Sami Publishing Company (SPC)
Eurasian Chemical Communications
2717-0535
2676-6280
3
2
2021
02
01
A note on QSPR analysis of total Zagreb and total Randić İndices of octanes
139
145
EN
Süleyman
Ediz
0000-0003-0625-3634
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
suleymanediz@yyu.edu.tr
Idris
Çiftçi
0000-0002-2698-0807
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
iciftci@yyu.edu.tr
Ziyattin
Taş
0000-0001-7561-8268
Faculty of Science, Bingöl University, Turkey
ztas@bingol.edu.tr
Murat
Cancan
0000-0002-8606-2274
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
mcancan@yyu.edu.tr
Mohammad
Reza
Farahani
0000-0003-2969-4280
Department of Applied Mathematics, Iran University of Science and Technology, Tehran, Iran
mrfarahani88@gmail.com
Mehmet
Serif
Aldemir
0000-0002-5298-6743
Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba, 65080, Van, Turkey
msaldemir@yyu.edu.tr
10.22034/ecc.2021.271640.1132
Topological indices are important tools for QSPR researches. Wiener, Zagreb, and Randić indices are pioneers of topological indices as the most used topological indices in view of chemistry and chemical graph theory. These three topological indices have been used for modeling physical properties of octanes and other chemical molecules. We firstly define k-total distance degree notion, k-total Zagreb and k-total Randić indices in graph theory. We investigated the prediction power of 3-total Zagreb indices and 3-total Randić index by using some physical properties of octanes such as entropy, acentric factor, enthalpy of vaporizatian and standard enthalpy of vaporization. We showed that these 3-total distance degree based novel indices are possible tools for QSPR studies, which they give a reasonably good correlation greater than 0.92 for modeling acentric factor of octanes. We also showed that 3-total indices give a strong correlation with Wiener index and the second Zagreb index.
QSPR analysis,Zagreb indices,Randić index,k-total Zagreb indices,k-total Randić index
https://www.echemcom.com/article_126646.html
https://www.echemcom.com/article_126646_77d39bcaff24c261cb8cf7a8f463ebb8.pdf