Subjects -> CHEMISTRY (Total: 928 journals)
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    - CHEMISTRY (661 journals)
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CHEMISTRY (661 journals)            First | 1 2 3 4 | Last

Showing 201 - 400 of 735 Journals sorted alphabetically
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 11)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 13)
Computational Chemistry     Open Access   (Followers: 3)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 12)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 6)
Corrosion Communications     Open Access  
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 17)
Croatica Chemica Acta     Open Access  
CrystEngComm     Hybrid Journal   (Followers: 10)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 8)
Current Opinion in Green and Sustainable Chemistry     Hybrid Journal  
Current Opinion in Molecular Therapeutics     Full-text available via subscription   (Followers: 8)
Current Protocols in Nucleic Acid Chemistry     Hybrid Journal  
Current Protocols in Protein Science     Hybrid Journal   (Followers: 1)
Current Research in Chemical Biology     Open Access  
Current Research in Chemistry     Open Access   (Followers: 7)
Current Research in Green and Sustainable Chemistry     Open Access  
Current Science     Open Access   (Followers: 115)
Current Topics in Medicinal Chemistry     Hybrid Journal   (Followers: 7)
Dalton Transactions     Hybrid Journal   (Followers: 23)
Detection     Open Access   (Followers: 3)
Diamond and Related Materials     Hybrid Journal   (Followers: 10)
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 4)
Ecological Chemistry and Engineering S     Open Access   (Followers: 2)
Educação Química en Punto de Vista     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EDUSAINS     Open Access  
EJNMMI Radiopharmacy and Chemistry     Open Access  
Elements     Full-text available via subscription   (Followers: 3)
Energetic Materials Frontiers     Open Access  
EnergyChem     Hybrid Journal   (Followers: 1)
Environmental Chemistry     Hybrid Journal   (Followers: 9)
Environmental Chemistry and Ecotoxicology     Open Access  
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Science & Technology Letters     Hybrid Journal   (Followers: 7)
Environmental Science : Nano     Hybrid Journal   (Followers: 2)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 22)
Enzyme Research     Open Access   (Followers: 4)
Eurasian Chemico-Technological Journal     Open Access  
European Journal of Chemistry     Open Access   (Followers: 25)
European Journal of Histochemistry     Open Access   (Followers: 4)
European Journal of Medicinal Chemistry     Hybrid Journal   (Followers: 21)
European Journal of Medicinal Chemistry Reports     Open Access  
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
Faraday Discussions     Hybrid Journal   (Followers: 3)
Fine Chemical Technologies / Тонкие химические технологии     Open Access  
FirePhysChem     Open Access  
Fitoterapia     Hybrid Journal   (Followers: 4)
FlatChem : Chemistry of Flat Materials     Hybrid Journal  
Fluid Phase Equilibria     Hybrid Journal   (Followers: 4)
Folia Histochemica et Cytobiologica     Open Access  
Folia Microbiologica     Hybrid Journal   (Followers: 2)
Food Chemistry : Molecular Sciences     Open Access   (Followers: 1)
Food Digestion     Hybrid Journal   (Followers: 5)
Food Security     Open Access   (Followers: 11)
Food Structure     Hybrid Journal   (Followers: 3)
Forensic Chemistry     Hybrid Journal   (Followers: 9)
Foundations of Chemistry     Hybrid Journal   (Followers: 4)
Frontiers in Chemistry     Open Access   (Followers: 4)
Frontiers in Soil Science     Open Access  
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 5)
Fullerenes, Nanotubes and Carbon Nanostructures     Hybrid Journal   (Followers: 9)
Future Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Gases     Open Access   (Followers: 1)
Gels     Open Access  
Geochemical Transactions     Open Access   (Followers: 2)
Geofluids     Open Access   (Followers: 5)
Giant     Open Access  
Graphene     Open Access   (Followers: 7)
Graphene     Full-text available via subscription   (Followers: 3)
Graphene Technology     Hybrid Journal  
Green Analytical Chemistry     Open Access   (Followers: 3)
Green and Sustainable Chemistry     Open Access   (Followers: 4)
Green Chemistry Letters and Reviews     Open Access   (Followers: 6)
Green Synthesis and Catalysis     Open Access  
GSTF Journal of Chemical Sciences (JChem)     Open Access  
Helvetica Chimica Acta     Hybrid Journal   (Followers: 32)
Heritage Science     Open Access   (Followers: 5)
Heteroatom Chemistry     Open Access   (Followers: 3)
High Energy Chemistry     Hybrid Journal  
Indian Chemical Engineer     Hybrid Journal   (Followers: 4)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 9)
Indian Journal of Chemistry - Section B (IJC-B)     Open Access   (Followers: 12)
Indian Journal of Natural Products and Resources (IJNPR)     Open Access   (Followers: 1)
Indonesian Journal of Chemical Science     Open Access  
Indonesian Journal of Chemistry     Open Access   (Followers: 1)
Indonesian Journal of Pure and Applied Chemistry     Partially Free  
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 10)
InfoMat     Open Access  
Inorganic Chemistry     Hybrid Journal   (Followers: 31)
Inorganic Chemistry Communications     Hybrid Journal   (Followers: 13)
Inorganic Materials     Hybrid Journal   (Followers: 5)
Inorganica Chimica Acta     Hybrid Journal   (Followers: 6)
Instrumentation Science & Technology     Hybrid Journal   (Followers: 7)
International Archives of Science and Technology     Open Access  
International Journal for Ion Mobility Spectrometry     Hybrid Journal   (Followers: 1)
International Journal of Adhesion and Adhesives     Hybrid Journal   (Followers: 18)
International Journal of Advanced Chemistry     Open Access   (Followers: 1)
International Journal of Agrochemistry     Full-text available via subscription  
International Journal of Analytical Mass Spectrometry and Chromatography     Open Access   (Followers: 8)
International Journal of Biological and Chemical Sciences     Open Access   (Followers: 4)
International Journal of Biological Chemistry     Open Access   (Followers: 2)
International Journal of Biological, Physical and Chemical Studies     Open Access  
International Journal of Chemical Kinetics     Hybrid Journal   (Followers: 7)
International Journal of Chemical Technology     Open Access   (Followers: 7)
International Journal of Chemistry     Open Access   (Followers: 10)
International Journal of Chemistry and Technology     Open Access   (Followers: 1)
International Journal of Chemoinformatics and Chemical Engineering     Full-text available via subscription   (Followers: 2)
International Journal of Corrosion     Open Access   (Followers: 10)
International Journal of Energetic Materials     Full-text available via subscription  
International Journal of Environmental Chemistry     Full-text available via subscription  
International Journal of Materials and Chemistry     Open Access   (Followers: 7)
International Journal of Medicinal Chemistry     Open Access   (Followers: 4)
International Journal of Minerals, Metallurgy, and Materials     Hybrid Journal   (Followers: 8)
International Journal of Molecular Sciences     Open Access   (Followers: 2)
International Journal of Nano Dimension     Open Access   (Followers: 2)
International Journal of Photoenergy     Open Access   (Followers: 3)
International Journal of Spray and Combustion Dynamics     Full-text available via subscription   (Followers: 15)
International Journal of Thermodynamics and Chemical Kinetics     Full-text available via subscription   (Followers: 2)
International Journal of Tryptophan Research     Open Access  
International Letters of Chemistry, Physics and Astronomy     Open Access   (Followers: 8)
International Research Journal of Pure and Applied Chemistry     Open Access  
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)     Open Access   (Followers: 1)
Iranian Polymer Journal     Hybrid Journal   (Followers: 3)
Iraqi Journal of Pharmacy     Open Access  
Israel Journal of Chemistry     Full-text available via subscription   (Followers: 4)
IUCrData     Open Access   (Followers: 1)
JACS Au     Open Access  
JBIC Journal of Biological Inorganic Chemistry     Hybrid Journal   (Followers: 2)
JCIS Open     Open Access   (Followers: 1)
JOT Journal für Oberflächentechnik     Hybrid Journal   (Followers: 1)
JOT-International Surface Technology     Hybrid Journal   (Followers: 1)
Journal of Adhesion     Hybrid Journal   (Followers: 7)
Journal of Adhesion Science and Technology     Hybrid Journal   (Followers: 10)
Journal of Advances in Chemistry     Open Access   (Followers: 4)
Journal of Agricultural and Food Chemistry     Hybrid Journal   (Followers: 9)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Journal of Al-Qadisiyah for Pure Science     Open Access  
Journal of Amino Acids     Open Access   (Followers: 1)
Journal of Analytical Methods in Chemistry     Open Access   (Followers: 1)
Journal of Analytical Sciences, Methods and Instrumentation     Open Access   (Followers: 4)
Journal of AOAC International     Hybrid Journal   (Followers: 4)
Journal of Applied Chemistry     Open Access   (Followers: 6)
Journal of Applied Solution Chemistry and Modeling     Hybrid Journal   (Followers: 1)
Journal of Applied Spectroscopy     Hybrid Journal   (Followers: 9)
Journal of Biomaterials and Nanobiotechnology     Open Access   (Followers: 6)
Journal of Boron     Open Access  
Journal of Carbohydrate Chemistry     Hybrid Journal   (Followers: 4)
Journal of Catalysis     Hybrid Journal   (Followers: 11)
Journal of Catalyst & Catalysis     Full-text available via subscription   (Followers: 2)
Journal of Chemical & Engineering Data     Hybrid Journal   (Followers: 10)
Journal of Chemical Education     Hybrid Journal   (Followers: 20)
Journal of Chemical Information and Modeling     Hybrid Journal   (Followers: 18)
Journal of Chemical Research     Open Access   (Followers: 6)
Journal of Chemical Reviews     Open Access  
Journal of Chemical Sciences     Partially Free   (Followers: 22)
Journal of Chemical Theory and Computation     Hybrid Journal   (Followers: 21)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 7)
Journal of Cheminformatics     Open Access   (Followers: 7)
Journal of Chemistry     Open Access   (Followers: 6)
Journal of Chemistry, Environmental Sciences and its Applications     Open Access   (Followers: 2)
Journal of Chemometrics     Hybrid Journal   (Followers: 9)
Journal of Chromatography A     Hybrid Journal   (Followers: 63)
Journal of Chromatography Open     Open Access   (Followers: 1)
Journal of Coating Science and Technology     Hybrid Journal  
Journal of Colloid and Interface Science     Hybrid Journal   (Followers: 17)
Journal of Computational Chemistry     Hybrid Journal   (Followers: 21)
Journal of Coordination Chemistry     Hybrid Journal   (Followers: 5)
Journal of Dispersion Science and Technology     Hybrid Journal  
Journal of Education and Science     Open Access   (Followers: 2)
Journal of Encapsulation and Adsorption Sciences     Open Access   (Followers: 1)
Journal of Energy Chemistry     Full-text available via subscription   (Followers: 3)
Journal of Flow Chemistry     Full-text available via subscription   (Followers: 2)
Journal of Fluorescence     Hybrid Journal   (Followers: 3)
Journal of Fluorine Chemistry     Hybrid Journal   (Followers: 7)
Journal of Fuel Chemistry and Technology     Full-text available via subscription   (Followers: 1)
Journal of Great Lakes Research     Hybrid Journal   (Followers: 5)
Journal of Heterocyclic Chemistry     Hybrid Journal   (Followers: 10)
Journal of Immunoassay and Immunochemistry     Hybrid Journal   (Followers: 9)
Journal of Inclusion Phenomena and Macrocyclic Chemistry     Hybrid Journal   (Followers: 1)
Journal of Inorganic Biochemistry     Hybrid Journal   (Followers: 4)
Journal of Ionic Liquids     Open Access  
Journal of Labelled Compounds and Radiopharmaceuticals     Hybrid Journal   (Followers: 4)
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry     Hybrid Journal   (Followers: 1)
Journal of Mass Spectrometry     Hybrid Journal   (Followers: 41)
Journal of Materials Chemistry A : Materials for Energy and Sustainability     Hybrid Journal   (Followers: 40)
Journal of Materials Chemistry B : Materials for Biology and Medicine     Hybrid Journal   (Followers: 11)
Journal of Materials Chemistry C : Materials for Optical, Magnetic and Electronic Devices     Hybrid Journal   (Followers: 17)
Journal of Materials Physics and Chemistry     Open Access   (Followers: 7)
Journal of Materials Research     Full-text available via subscription   (Followers: 13)
Journal of Materials Science and Chemical Engineering     Open Access   (Followers: 1)
Journal of Mathematical Chemistry     Hybrid Journal   (Followers: 5)
Journal of Medicinal Chemistry     Hybrid Journal   (Followers: 134)
Journal of Membrane Science     Hybrid Journal   (Followers: 22)
Journal of Metastable and Nanocrystalline Materials     Full-text available via subscription   (Followers: 1)
Journal of Modern Chemistry & Chemical Technology     Open Access   (Followers: 2)
Journal of Molecular Graphics and Modelling     Hybrid Journal   (Followers: 1)

  First | 1 2 3 4 | Last

Similar Journals
Journal Cover
Journal of Education and Science
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1812-125X - ISSN (Online) 2664-2530
Published by U of Mosul Homepage  [20 journals]
  • Performance Analysis of n-ZnO/p-Si Heterojunction Diode as Function of
           Zinc Oxide Thin Films ...

    • Abstract: The n-type Zinc oxide (n-ZnO) nanostructured thin films (TFs) with different thicknesses (211, 325, 433 and 552 nm) were grown onto glass substrates employing the CVD technique at atmospheric pressure. Deposited films were characterized by EDX spectroscopy attached with FE-SEM and XRD techniques to determine the influence of thickness on elemental compositions and crystalline structure of ZnO films, respectively. Also, ZnO TFs were deposited on the p-Si(111) substrates to form different structures of n-ZnO/p-Si heterojunction diodes and then I-V characteristics were studied in the dark. The electrical parameters of the diodes such as rectification ratio (RR), reverse saturation current (Is), ideality factor (), barrier height (b) and series resistance (Rs) were calculated from the I-V measurements. EDX spectra showed that these films were only made from Zn and O elements. XRD patterns presented that the ZnO films possess hexagonal wurtzite structure with preferred orientation along [002] direction. I-V characteristics of the heterojunction diodes revealed rectification behavior and depend on ZnO TFs thickness. Also, electrical parameters of diodes were affected by the prepared film's thickness. It was found that the crystalline structure of the films and electrical properties of diodes were improved with increasing the thickness of ZnO films. It is noted that the best heterojunction diodes were that prepared with thickness (552 nm), where possess lowest value of ideality factor (3.38) and a series resistance (0.84 k) with a highest rectification ratio (1517), compared with other structures. This study offers a simple model for fabricating diodes from semiconductor films.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Preparation and study of some physical properties of copper nanoparticles
           by pulsed laser ...

    • Abstract: In this paper, the pulsed ablation laser in liquids (PLAL)method was used to obtain copper nanoparticles from material copper, One of the first signs of nanoparticle production or generation using the pulsed laser is a change in the color of the sample's solution as the concentration of nanoparticles increases. In our study, deionized distilled water with a volume of 5 mL was used to prepare the samples with energy (300, 500)mj. With number of pulsed (50, 100, 150, 200) pulse respectively. We noticed a change in the color of the solution to a dark white color, indicating the presence of silver nanoparticles. In another side study the obsorbancy and transmission by using UV-Visible spectroscopy, the peaks of all samples were at wave length at (250-260) nm. This confirms that nanoparticles have been obtained from silver material. The determined mean energy gab for direct transition allowed of the samples is 2.74 eV.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Improving Security Using Cryptography Based on Smartphone User Locations

    • Abstract: Smartphones have become widely employed in a range of fields as a result of substantial developments in communication technology, distribution, and the development of numerous types of smart mobile devices. The goal of this research is to secure information sent over mobile phone networks. In this paper, we propose using cryptography to create a more secure application for transmitting confidential information, using encryption to improve security, and depending on the location of the mobile phone user's coordinates, obtained via GPS, to increase security. The XOR process was used between coordinates, the idea was new, the application was implemented, and good results were obtained. The process of converting text into unreadable text is known as ciphering, and in order to achieve it in this paper the Twofish algorithm was used to encrypt confidential information. When sending the coordinates, the RSA algorithm was used to encrypt them as for the Twofish algorithm, the coordinates serve as a key. We conclude that the proposed system used in this study achieved a high level of security.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Measurement of Low-Pressure Plasma Parameters by the Floating Double Probe
           Method for Dry Air ...

    • Abstract: The electrical continuous glow discharge is in the capillary tubes. It has gained great interest especially in the applications of liquid crystals as well as display plasmas and soft x-ray lasers. In the present work, an electrical discharge system was designed consisting of a capillary tube and two electrodes. The cathode takes on a hollow geometric shape from nickel material to obtain a high current density. The anode electrode is a tungsten material. The inter-electrodes distance was taken as 12 cm. The floating Langmuir double probe was used as a diagnostic Tool to measure the plasma parameters at different ranges of gas pressure for dry air and helium as working gases. The current-voltage characteristics of the double probe were measured at gas pressure 0.2, 0.3, 0.4, 0.5, 0.6, and 0.7 torr. All measurements are conducted at a constant power of 0.6 watt. Electron temperature and ion saturation current were extracted from the I-V characteristics curves. The electron density, Debye length, and plasma frequency were calculated. It was observed that the electron temperature decreases with increasing working gas pressure. The influence of pressure on electron density and ion saturation current gave a clear similarity to the variation in them with pressure in both gases used. Comparisons of the effect of pressure on plasma parameters in working gases were illustrated. The results were in reasonable agreement with previous research.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • A Review Of Clustering Methods Based on Artificial Intelligent Techniques

    • Abstract: Due to the development in various areas of life, the development of the Internet, and the presence of many dataset, and in order to obtain useful information from the rapidly increasing volumes of digital data, there must be theories and computational tools to help humans extract the useful information they need from this data. Large data is collected from many different services and resources. Clustering is one of the most basic and well-known methods of data mining and extraction and obtaining useful information. The technique of recognizing natural groups or clusters within several datasets based on some measure of similarity is known as data clustering. Many researchers have introduced and developed many clustering algorithms based on the different methods of artificial intelligence techniques. Finding the right algorithms greatly helps in organizing information and extracting the correct answer from different database queries. This paper provides an overview of the different clustering methods using artificial intelligence and finding the appropriate clustering algorithm to process different data sets. We highlight the best-performing clustering algorithm that gives effective and correct clustering for each data set.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Detecting A Medical Mask During The COVID-19 Pandemic Using Machine
           Learning: A Review Study

    • Abstract: Since the emergence of the COVID-19 pandemic, there have been government instructions to citizens to wear a medical mask in crowded places and institutions to prevent or reduce the spread of the pandemic, as the most common method of transmission of COVID-19 is (coughing or sneezing), the spread of infection of this disease can be reduced by wearing a mask Medical, and to ensure that everyone wears a mask is not easy.In this paper, we try to study research in the field of identifying the medical mask and the machine learning algorithms used to build a system capable of detecting the medical mask in faces through images and video in real time. We also explain in this research an overview of the importance of machine learning and deep learning methods, especially Convolutional Neural Network (CNN) and the basic steps for creating the system We reveal the medical mask, and we highlight the methods and stages of building the model with its accuracy and get acquainted with the datasets used in building the model and the size of the data set (number of images) used in the training and testing phase of the model and the mechanism by which The researcher worked out to build his own system.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Gauss-Hermite Cubature Method to estimate parameters of a multivariate
           GLMM

    • Abstract: In this paper, the multivariate generalized linear mixed model (GLMM) was studied when there are three response variables, distributed as Normal, Bernoulli, and Poisson. And because there is a multiple integration in the likelihood function for the model under study, it is necessary to use mathematical methods to solve this integration, and because it is not possible to obtain the result of this integration by the well-known methods of integration, numerical methods have been used, the Gauss-Hermite Cubature (GHC) algorithm, which is one of the most common numerical integration methods. Then the estimates were obtained by maximizing the resulting likelihood function with respect to the parameters, and thus, estimates were obtained for the parameters. On the practical side, we have used real data representing the effect of potassium as a fixed effect, and referring patients were considered as a random effect on three response variables: calcium, creatinine, and urea as they follow Normal, Bernoulli, and Poisson distributions taken from the records of the Vajin Hospital in Dohuk city. The regression coefficients showed that the effect of potassium is positive on both calcium and urea because the values of the coefficients are positive, while its effect is negative on the creatinine because the value of the coefficient is negative. Based on the results, the researchers recommended several recommendations, including estimating the standard error of the estimates in their light, in order to construct hypotheses for a significance test about regression coefficients.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • The New Approach Optimization Markov Weighted Fuzzy Time Series using
           Particle Swarm Algorithm

    • Abstract: Markov Weighted Fuzzy Time Series is a forecasting method that applies fuzzy logic to form linguistic variables from existing data. The formation of linguistic variables makes it possible for the forecasting process to be more accurate by considering the uncertainty aspect in decision-making. Its formation is started by grouping the data into a certain number of clusters. The next step is fuzzification, transition matrix formation, and defuzzification for forecasting. In the process of grouping, the existing data will be grouped into several clusters so that it results in the interval length of each cluster. One of the problems of this grouping is the absence of a base standard in the clustering process so it is prone to have a different value in forecasting accuracy. The difference in the number of the class or interval length will result in different accuracy even though the clustering method that is used is the same. In this study, the author proposes the idea of using Particle Swarm Optimization to improve the interval length. The initial interval that is already obtained through the K-means clustering algorithm will be evaluated using the Particle Swarm Optimization method so that it will have a new interval that later will be used in the fuzzification process and forecasting. The accuracy of forecasting can be calculated by using Mean Absolute Percentage Error from Markov Weighted Fuzzy Time Series conventional method and Markov Weighted Fuzzy Time Series method with Particle Swarm Optimization. The result of this study gives an improvement in error value from 8.03% to 5.88%.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Assessment of Tolerance Levels to Air Pollution for Some Species of Trees
           and Shrubs Growing on ...

    • Abstract: Abstract This study was conducted in the western part of Mosul city from 20/9/2020 to the end of spring 2021 to assess the tolerance of some trees and shrubs against air pollution based on the air pollution tolerance index APTI. The sites were tested according to the different traffic density and human activities, and included areas Residential, main and secondary roads, samples of healthy leaves were collected for 19 species of trees and shrubs in the season of summer, winter, spring and autumn, and included some evergreen species such as orientalis Biota, , Nerium oleander , Cupressus sempervirens var pyramidalis , Cupressus sempervirens var.horizantalis, Casuarina equistifolia , Olea europaea , Eucalyptus camaldulenses , Pinus brutia , Dypsis lutesens , Washingtonia filifera , Tamarix articulate , Callistemon viminalis , Leucaena leucephala, And falling leaves Melia azedarach , Morus alba , Ziziphus spina-christi , Ficus carica , Albizia lebbeek ,Populus euphratica. . Some biochemical characteristics were used to evaluate the ability of these species to resist pollutants and the possibility of using them for planting on the roadsides. Analysis of variance and LSD test were used to find out the statistical differences between the different species. The results of this study indicated that there was a significant difference between the different species, as a result, the highest value of the relative moisture content of the callistemon viminalis trees in the Al tayaran area was (87.461%) among all other plant species, the Leucaena leucephala trees contained a high percentage of chlorophyll,
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • Preparation and study of some physical properties of silver nanoparticles
           by pulsed laser ...

    • Abstract: In this paper, the pulsed laser method was used to obtain silver nanoparticles, and one of the first signs indicating the production or generation of nanoparticles using the pulsed laser is the change in the color of the solution. In our study, deionized distilled water with a volume of 5 mL was used to prepare the samples with energy (300, 500)mj With pulsed (50, 100, 150, 200) pulse. We observed change in color of solution to a dark yellowish color that means obtained silver nanoparticles. In another side study the obsorbancy and transmission by using U-Visible spectroscopy, the peaks of all samples were at 400 nm this confirms that nanoparticles have been obtained. The mean energy gab calculated for direct transition allowed of the samples are 2.94 eV.
      PubDate: Tue, 31 May 2022 19:30:00 +010
       
  • A Study of Some Changes in the Properties of Recycled PVC Plastic in Arbil
           Factories

    • Abstract: Abstract: This research was carried out in the laboratories of Erbil city on recycled PVC plastic for several times. The plasticizer DOP was extracted from the old plastic to study the extent to which the plasticizer remained in it after a period of time, as well as its exposure to heat of atmosphere. Several experiments were conducted to reach the optimum conditions to obtain the highest percentage of extracted plasticizer and then it was diagnosed by infrared spectrophotometer and thin layer chromatography. The results showed that the extracted plasticizer matches the standard plasticizer. We also performed viscosity measurements and bromine detection. The results showed that increasing the percentage of plasticizer works to increase the flexibility of plastic materials and reduce the degree of softening, knowing that adding the amount of plasticizer depends on the season of the year. This study can be used for the purpose of qualitative improvement of the production of recycled plastic as well as for the benefit of environmental issues.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Analytical Study of Traditional and Intelligent Textual Plagiarism
           Detection Approaches

    • Abstract: The Web provides various kinds of data and applications that are readily available to explore and are considered a powerful tool for humans. Copyright violation in web documents occurs when there is an unauthorized copy of the information or text from the original document on the web; this violation is known as Plagiarism. Plagiarism Detection (PD)can be defined as the procedure that finds similarities between a document and other documents based on lexical, semantic, and syntactic textual features. The approaches for numeric representation (vectorization) of text like Vector Space Model (VSM) and word embedding along with text similarity measures such as cosine and jaccard are very necessary for plagiarism detection. This paper deals with the concepts of plagiarism, kinds of plagiarism, textual features, text similarity measures, and plagiarism detection methods, which are based on intelligent or traditional techniques. Furthermore, different types of traditional and algorithms of deep learning for instance, Convolutional Neural Network (CNN) and Long Short-Term Memory (LSTM) are discussed as a plagiarism detector. Besides that, this work reviews many other papers that give attention to the topic of Plagiarism and its detection.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • The Use of Yellow Sticky Traps to Estimate He Population Density of
           Insects Accompanying Squash ...

    • Abstract: The research was performed in AL -Namrud district, south of Mosul city, in autumn season/ 2020 to determine the seasonal presence of insects that accompanying each of the cucumber and marrow, planted in rate 28 row. yellow sticky traps were used for the period from 19/ September until 31/ October, which were placed in the four directions (North, South, East and West) to find out the best direction for catching insects. The results showed that the two plants were infected with insects, aphid and leafhopper and white fly also cucurbit fly insect. Showed the highest average to aphid Aphis gossypi (Glover) 89,33 insect / trap on southern direction in 17/10 And on the cucumber plant. As for the leafhopper insect Empoasca desedens (Poali) showed highest average for insect 79 insect / trap on Northern direction in 31/10 to cucumber plant, While the highest average was recorded for an insect white fly 125 insect / trap on the southern direction in 19/9 on the cucumber plant. while yellow sticky traps did not succeed in Catching a large number of whole insects of the cucurbit fly Dacus ciliatus (Loew) showed highest average 1.33 insect / Trap on the Northern direction in 31/10 on marrow plant.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Indirect Spectrophotometric Determination of Famotidine and Ciprofloxacin
           Hydrochloride in ...

    • Abstract: An indirect simple and sensitive spectrophotometric method has been developed for the determination of famotidine (FAM) and ciprofloxacin hydrochloride (CIP) in pure and pharmaceutical dosages. The method is based on the oxidation of FAM and CIP with known excess of N-Bromosuccinimde in acidic medium and subsequent occupation of unreacted oxidant in decolorization of Janus green B dye and measure the absorbance of residual dye at 618 nm. Calibration curves of residual Janus green B dye in the presence of FAM or CIP were rectilinear over the ranges 1.0-10.0 and 1.0-7.5 µg/ml with molar absorptivity 3.61×104 and 5.14×104 l.mol-1.cm-1 respectively. The accuracy (average recovery) was ranged between 99.68 and 100.23% and precision (RSD%) is less than 3.80%. The developed method was successfully applied for the determination of the studied drugs in their pharmaceutical preparations. The results obtained are in agreement with certified values of pharmaceutical preparations and also with standard addition procedure and standard method applied in state company for drugs industry and medical appliance,SDI.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Nuclear abnormalities and Oxidative Stress Induced by Hookah (Shisha) in
           Male Human in Erbil City

    • Abstract: Nowadays hookah smoking has dramatically increased especially in the Middle East. Because Hookah tobacco contains many harmful substances, it has dangerous impacts on human beings. The goal of the current study is to examine the oxidative stress in blood and clastogenic effects of hookah smoking on exfoliated buccal cells. One hundred and twenty five healthy adult males were involved in this study. The participants were distributed into five groups: control, passive smokers, and three hookah smoker groups. Samples of blood from all groups were examined for Malondialdehyde (MDA) level and exfoliated buccal cells were aslo examined thorough micronucleus (MN) test for frequencies of nuclear abnormalities including Micronucleus (MN), Binucleates (BN) and Karyolysis (KL), were evaluated as well. frequencies of all nuclear abnormalities Micronucleus (MN), Binucleates (BN) and Karyolysis significantly increased in all exposed groups compared to the control group and the effect was exposure duration dependent. Malondialdehyde level also significantly increased in all exposed groups compared to the control group and the effect was exposure duration dependent.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Effect of aqueous and alcoholic extract of Eucalyptus camaldulensis Dehn
           leaves in growth of ...

    • Abstract: Root Rot disease is one of important disease which caused great damage for Biota orientails and this was evident in the private forest nurseries in Mosul, for three nurseries in the Al-Faisaliah area, three nurseries in the Muthanna area, one nursery in the Mohandessin area, as well as the Nineveh horticultural station during the field survey, this was through October and December of 2017 and February - August of 2018.fungi were recorded like Fusarium solani Mart isolation ratia 36.85% ,Macrophomina phaseolina Tassi Goid islalation ratia 22.34% and Rhzoctonia solani Khun islalation ratia 26.89% which Isolated from Biota orientails seedling . Results of pathogenicity tests showed Fusarium solani was had high pathogenicity (50%) Biota orientails seedling and the fungus was very effective at growth characteristics. study of Eucalyptus camaldulnsis leaves Extracts effect at the growth of Isolated fungi The results showed the superiority of the alcoholic extract in inhibiting the growth of the isolates fungi compared to the aqueous extract and for all concentrations except for the fungus R. solani, which was uniquely significantly inhibited by the effect of the aqueous leaf extract of Eucalyptus.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Software Development Effort Estimation Techniques: A Survey

    • Abstract: Software Effort Estimation (SEE) is used in accurately predicting the effort in terms of (person–hours or person–months). Although there are many models, Software Effort Estimation (SEE) is one of the most difficult tasks for successful software development. Several SEE models have been proposed. However, software effort overestimation or underestimation can lead to failure or cancellation of a project. Hence, the main target of this research is to find a performance model for estimating the software effort through conduction empirical comparisons using various Machine Learning (ML) algorithms. Various ML techniques have been used with seven datasets used for Effort Estimation. These datasets are China, Albrecht, Maxwell, Desharnais, Kemerer, Cocomo81, Kitchenham, to determine the best performance for Software Development Effort Estimation. Root Mean Square Error (RMSE), Mean Absolute Error (MAE), and R-Squared were the evaluation metrics considered. Results and experiments with various ML algorithms for software effort estimation have shown that the LASSO algorithm with China dataset produced the best performance compared to the other algorithms.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Intelligence System for Multi-Language Recognition

    • Abstract: Language classification systems are used to classify spoken language from a particular phoneme sample and are usually the first step of many spoken language processing tasks, such as automatic speech recognition (ASR) systems Without automatic language detection, spoken speech cannot be properly analyzed and grammar rules cannot be applied, causing failures Subsequent speech recognition steps. We propose a language classification system that solves the problem in the image field, rather than the sound field. This research identified and implemented several low-level features using Mel Frequency Cepstral Coefficients, which extract traits from speech files of four languages (Arabic, English, French, Kurdish) from the database (M2L_Dataset) as the data source used in this research. A Convolutional Neuron Network is used to operate on spectrogram images of the available audio snippets. In extensive experiments, we showed that our model is applicable to a range of noisy scenarios and can easily be extended to previously unknown languages, while maintaining classification accuracy. We released our own code and extensive training package for language classification systems for the community. CNN algorithm was applied in this research to classify and the result was perfect, as the classification accuracy reached 97% between two languages if the sample length was only one second, but if the sample length was two seconds, the classification accuracy reached 98%. While the classification among three languages, the classification accuracy reached 95% if the sample length was only one second, but if the sample length was two seconds, the classification accuracy reached 96%.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Antibacterial effect of Bacillus subtilis extract on the growth of
           pathogenic bacteria and ...

    • Abstract: The antibacterial effect of three selected isolates of Bacillus subtilis (Sar1, Sar2, Sar3) was tested by the agar diffusion method, and the results showed that there was no inhibitory effect of these bacteria against the growth of pathogenic bacteria; Staphylococcus aureus, Staphylococcus haemolyticus Escherichia coli, and Pseudomonas aeruginosa, while the undiluted and half-diluted (200, 100, 50) mg/ml extracts, of the three cultures which are tested by the Agar Well Diffusion method, had varying inhibitory effects towards the growth of these five pathogenic bacteria and more effect on gram-positive compared to its effect on gram-negative bacteria. Through GC-MS detection of secondary metabolites of Bacillus subtilis (Sar1) extract, which were selected because they are identical to Bacillus subtilis bacteria contained in the standard GeneBank with a percentage of (95)%, it was found that they consist of (33) chemical substances according to the number of peaks produced. After injecting the extract into the GC device, and when this information was entered into the MS device, it was diagnosed by its names with the calculation of its molecular weight and the amount of area it occupies as a percentage within the used extract understudy.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Investigation the toxicity of compound insecticide (Acetamiprid and
           Thiamethioxam) on ...

    • Abstract: Abstract Insecticides are chemical compounds that extensively used in agriculture for pest management, urban and household as well as in medicine to control different diseases such as typhus, malaria and others. The purpose of this study was to investigate the toxic effects of compound insecticide (Acetamiprid and Thiamethioxam) on develop-ment of Ross 308 Broiler chick embryo. 250 fertile eggs were divided into 6 groups two of them were control group, negative and positive control were injected with distilled water and the other were injected with 100µl/egg, into the yolk sac, containing Acetamiprid and Thiamethioxam (360, 540, 900 and 1800ppm). The morphological characteristics were studies on day 10th and 21st day of incubation. The fourth doses caused reduction in the embryos weight and significant increase in the mortality. In addition, there were clear abnormalities indicated on both days (10 and 21) including over growth in the brain, twisted cleft beak, wry neck eye deformation, ectopia visceral, delayed retraction of yolk sac, abnormal limbs, and broken legs. Microscopically, examination of liver tissue revealed on 10 day as well as 21 day to alterations in the hepatic cells including necrosis and degeneration enlarged and congested central vein and sinusoidal spaces and infiltrations of leucocyte and Kupffer cells activation. To conclude, the current study revealed that Acetamiprid and Thiamethioxam caused significant morphological and histological effects in chick embryo Ross 308.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • Enhancement Efficiency of Calculation of the Phonon Images for GaP
           Piezoelectric Crystal

    • Abstract: ABSTRACT In this paper an improved phonon imaging for GaP has been calculated, this crystal is one of III-V group. In the presence of piezoelectric properties, the computation treatment is based on increasing the number of points in the reduced Brillouin zone and increasing the size of the phonon image matrix. The phonon images can be calculated by large number of points in the reduced Brillouin zone which represent the wave vectors and these vectors can be transformed to group velocity vectors using Christoffel equation, these set of group velocity vectors can be projected in a certain direction to form the phonon image. A program was prepared in MATLAB language to calculate these images by determining the number of points in the reduced zone and determining the size of the matrix that represents the phonon images in addition to the direction of the projections. To calculate the phonon images in the presence of the effect of the piezoelectric properties, it is through the presence of the k44 factor, which indicated of the influence of the piezoelectric properties on the phonon images. The results showed that the size of the image matrix is more effective factor than the number of points in the reduced Brillouin zone especially when the number of points is greater than 8×〖10〗^5 points, and when the number of points less than 〖10〗^4 points all the obtained phonon images is not clear.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
  • EVALUATING QOS IN NETWORKS WITH ACTIVE QUEUE MANAGEMENT ALGORITHMS

    • Abstract: Packets queuing and scheduling in network routers is a key point of overall network performance. Many applications, especially applications require Quality of Services (QoS), need techniques to pass their packets throughout routers and control and/or avoid congestions in highly congested routes. Therefore, many Active Queue Management (AQM) algorithms have been developed to avoid or control congestion in routers and provide fairness among traffic flows. This paper provides an extensive evaluation performance analysis of three well-known AQM algorithms including RED, REM and traditional Drop-Tail with QoS application requirements. The evaluation performance is conducted by employing network simulator version 2 (NS2). The network performance is measured with Voice over Internet Protocol (VoIP) traffic and three performance metrics including, throughput, latency, and PSD (Probability of Sequential Drop). The analysis shows no AQM algorithm achieve all the VoIP QoS requirements, A new AQM is needed to fulfil QoS requirements and manage queue to handle unresponsive flows.
      PubDate: Mon, 28 Feb 2022 20:30:00 +010
       
 
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