bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new Bayesian elastic net for tobit regression
Authors: Alhamzawi Ahmed 
Published: November 2020

Abstract
In this paper, we propose a new Bayesian elastic net (EN) approach for variable selection and coefficient estimation in tobit regression. Specifically, we present a new hierarchical formulation of the Bayesian EN by utilizing the scale mixture of truncated normal distribution (with exponential mixing distributions) of the Laplace density part. The proposed method is an alternative method to Bayesian method of the EN problem. The performance of the proposed model is compared with old model of the Bayesian elastic net using a simulation example. It is shown that the model performs well compared with old elastic net representation.
Stability and Asymptotic Stability of Closed Random Sets
Authors: Kadhim Ihsan Jabbar , Imran Mohammed Shanan 
Published: November 2020

Abstract
In this paper the concepts of Stability, Asymptotic Stability of Closed Random Sets family in (deterministic) dynamical system are defined in (random) dynamical systems. Also some main result such as uniformly stable, compact asymptotically stable set are proved in random dynamical system.
Overview and Performance Analysis of Encryption Algorithms
Authors: Oleiwi Zahraa Ch. , Alawsi Wasan A. , Alisawi Wisam. Ch. , Alfoudi Ali S. , Alfarhani Liwa H. 
Published: November 2020

Abstract
Data protection is a complex problem affecting many areas including computers and communications. To ensure the necessary protection of applications, cryptographic methods and various algorithms are used. In this paper general overview of cryptography, information security and the comparison of algorithms with symmetric and asymmetric keys is presented. Factors ensuring the achievement of efficiency, flexibility and security are the basis of this research. As a result, the best solution for symmetric and asymmetric encryption is produced.
Preparation, spectroscopic and anticancer studies of metal antibiotic Chelation Ni(II), Cu(II) and Zn(II) 4,5-dimethyl Thiazolylazo complexes
Authors: Al-Adilee Khalid Jawad , Waheeb Azal Shakir 
Published: November 2020

Abstract
This work included synthesis of new ligand 2-[2-(4,5-Dimethyl thiazolyl)azo]-4,6-dimethyl phenol (DMeTADMeP) by coupling of diazonium salt of 2-amino-4,5-dimethyl thiazole with (2,4-dimethylphenol). Also, preparation of new series of chelate complexes of Ni(II), Cu(II) and Zn(II) metal ions were also prepared by mixing solution of metal salts with solution of ligand at mole ratio[ M:L] [1:2] for Ni(II), Cu(II) and Zn(II) metal ions. The structures of the azo dye ligand and its metal complexes were confirmed by various analytical techniques like by UV-visible, FT-IR, Mass spectroscopic, 1H-NMR, 13C-NMR, (C.H.N.S) element analyses, molar conductance, FESEM and XRD diffraction studies. The antibacterial and antifungal activity of thiazolyl azo dye and its metal complexes were shown activity towards both bacterial Escherichia coli (gram negative), streptococcus (gram positive) and Penicillium as antifungal. The results shows that this kind of compounds plays an important role in the rate of inhibition of the growth of bacterial. The anticancer activity was also conducted of the (DMeTADMeP) and Cu(II)-complex by cells cytotoxicity and screen for in vitro antitumor activity against human Hepatocellular cancer. The results indicated that this type of this compounds play an important role in the rate of inhibition of the growth cells of cancerous, undoubtedly the possibility of using them as anti-cancer drugs in the field of medicine and pharmacy.
Green Synthesis and Characterization of Reduced Graphene Oxide (RGO) using Sabdarriffa L extract and its Solubility Property
Authors: Alshamsi Hassan Abbas , Ali Sura K. , Alwan Altaa Salam H. 
Published: November 2020

Abstract
In this work, a synthesis of reduced graphene oxide using Hibiscus Sabdarriffa L extract was investigated. This way is operationally easy and environmentally friendly at compared with the reduction methods of graphene oxide using chemical agents. The prepared GO and reduced GO were characterized by Raman spectroscopy, UV-vis spectroscopy, Fourier Transform-Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Transition Electronic Microscope (TEM), Atomic Force Microscopy (AFM), Brunauer-Emmett-Teller (BET), Photoluminescence (PL)and Thermogravimetric analysis (TGA) provide a good indication of the removal of oxygen-containing groups from GO and the formation of RGO.It is found that the graphene sheets possess a frizzy morphology consisting of a thin wrinkled paper-like structure, fewer layers and large specific surface area (506.6m2 g−1) and good thermal stability. Measurements show that the use of a natural agent is more likely to reduce functional aggregates in the graphene oxide than hydrazine. Moreover, it is less toxic, less volatile and safer than others.
Regional Boundary Gradient Closed Loop Control System and Γ*AGFO-Observer
Authors: Al-Saphory Raheam , Khalid Zinah , Jai Abdelhaq EL 
Published: November 2020

Abstract
The main objective of this paper is to study the problem of regional boundary asymptotic gradient full order observer (Γ*AGFO-observer) in link with the structures of sensors and actuators. Important results have been obtained related to diverse kinds of measurements and controls, of domains and boundary conditions. It has been shown that the structures of measurements and feedback controls allow the existence of Γ*AGFO-observer in order to achieve regional boundary gradient closed loop control system (Γ*AGFO-system). It has also been found that there is a dynamical system which does not represent the observer in the usual sense, but it could be interpreted as a regional observer.
Kinetic and Thermodynamic Studies for Mebeverine hydrochloride Adsorption from Aqueous Solution using prepared chitosan polymer in delivery drug system
Authors: Jabbar Almukhtar Jubran G. , Karam Faiq F. 
Published: November 2020

Abstract
In different applications, pharmaceutical products are widely distributed and frequently released into the environment. The adsorption of Mebeverine hydrochloride (MB.HCl) on chitosan polymer was studied under certain conditions. The Adsorption Isotherms can be well defined using the Freundlich and Temkin equations. The pH of the solution significantly influences the adsorption potential of chitosan, the adsorption of chitosan increased from the initial pH of 1.1 and then decreased over the (2-10) pH range. Adsorption is sensitive to the change in ion strength, indicating that electrostatic attraction is an important mechanism for the sorption process. Adsorption of chitosan to MB.HCl is defined as endothermic adsorption by enthalpy change (ΔH). The value of the (ΔG) is negative at all the temperatures studied, which suggests the spontaneous trend to adsorb MB.HCl to chitosan. The value of (ΔG) decreased when the temperature rose from 5°C to 25°C, indicating higher adsorption of MB.HCl at an increased temperature. The positive value of (ΔS) represents chitosan’s attraction to drugs as well as that randomness on its solid-solution interface.
Spectroscopic Study of PVA-Glycerin-TPAH matrix with Nitroaromatic compounds: F-MOST a New Meisenheimer complex Effective Kit
Authors: Hammud Kafa Khalaf , Mohssin Akosh Nibras Abdul , Hamza Faehaa Mseer , Ammen Eman Wageh , Zanad Duraid Essa , Aboob Ruaa Mohammed 
Published: November 2020

Abstract
The reaction between four tested nitroaromatic compounds with tetrapropyl ammonium hydroxide (TPAH) was used to produce Meisenheimer complex colour. This result was used to prepare a new fast, selective, and sensitive kit (F-MOST) composed of polyvinyl alcohol and glycerin beside the active agent (TPAH) with gel – like appearance. The gel-like appearance of F-MOST kit gave an advantage through excellent efficiency continued more than six months.
ZnO Based Material as Photocatalyst for Treating the Textile Anthraquinone Derivative Dye (Dispersive Blue 26 Dye): Removal and Photocatalytic Treatment
Authors: Hussain Zainab A. , Fakhri Faten H. , Alesary Hasan F. , Ahmed Luma. M. 
Published: November 2020

AbstractThe generation and accumulation of environmental pollutant of industrial contaminations gave it a big challenge to develop many removal strategies of pollution. Textile dyes as dispersive blue 26 dye affected by several decolorization parameters like as temperature, initial pH and initial concentrations of dye. These variables parameter were studied on ZnO-dye suspension solution in dark and photoreaction conditions. In dark reaction, with using thermodynamic and kinetic parameters such as ΔH°, ΔS°, ΔG° and Ea, the type of adsorption was determined and found as a physical adsorption, exothermic and fast reaction. Moreover, the results demonstrated that the photoreaction process under UV-light-A would elevated the rate of reaction, percentage of decolorization and accelerated the half-time of decolorization reaction in 50 ppm of dye. The photoreaction of decolorization of this dye acts as pseudo first order kinetics with endothermic, less random less, non spontenous and fast reaction.
Synthesis and Characterization of New Azo Compounds Linked to 1,8-Naphthalimide as New Fluorescent Dispersed Dyes for Cotton Fibers
Authors: Al-Khuzaie Mohammed G. A , Al-Majidi Suaad M.H. 
Published: November 2020

Abstract
New Azo compounds containing of 1,8-naphthalimide moiety had been synthesized from 1,8-naphthalic anhydride by reaction with p-phenylenediamine or benzidine to give 1,8-naphthalimide derivatives [1 or 2], which converted into its diazonium salt derivatives that undergo to coupling reaction with different substituted phenol in alkaline media to produce azo compounds derivatives [3-6]. The prepared compounds had been characterized by measuring some of physical properties (melting point), FTIR, 1HNMR and 13CNMR. Also, absorption spectra (UV-Vis spectrophotometry), fluorescence spectra (Fluorescence spectrophotometry) and quantum yield of prepared azo dyes [3 - 6] had been studied in four different solvents of different polarities (EtOH, dioxane, CHCl3 and DMSO). Also, the photo stability of the dyes [3 - 6] was studied by exposing to the ultraviolet light at room temperature for three hours. Thermal stability of dyes (3 & 4) was studied by TGA / DTG. The prepared dyes [3 - 6] were used for the dyeing of raw cotton dyeing at high temperatures and studying their fastness properties such as washing fastness using standard soap (SDS) and rubbing fastness (wet and dry) under controlled conditions of pressure, speed and moisture.
Mutational analysis of the phosphorylation sites of the Leishmania mexicana kinesin homologue LmxKin29
Authors: Gazi Al Kui Suad 
Published: November 2020

Abstract
Kinesins are motor proteins, have been identified in a wide diversity of eukaryotes, from protists to mammals. The kinetoplastids’ genome sequences have also shown the presence of a large number of kinesins. The current study presents characterise a novel L.mexicana kinesin LmxM29.3.050, thought to be associated with flagellum formation. It was found express in both the amastigote and promastigote life stages. In this study we assigned this protein as a kinesin homologue to the unknown or orphan kinesins superfamily (1). The biochemical analysis showed the MAP kinase homologue LmxMPK3 can phosphorylate full length of LmxKin29 at serine 554. Localisation studies using GFP-tagged LmxKin29 revealed that it is predominantly found in between the nucleus and the flagellar pocket, while in dividing cells LmxKin29 was found at the anterior and posterior ends of the cells. Hence, LmxKin29 might play a role in cytokinesis. Double allele deletion was successfully generated. Morphological analysis of promastigotes with LmxKin29 tagged with GFP displayed no obvious phenotypic differences comparing the mutants with wild type cells.
Effects of Mn doping on the characterization of nanostructured TiO2thin films deposited via chemical spray pyrolysis method
Authors: Hadi Esraa H , Abbsa Mustafa A , Khadayeir Abdulhussain A , Abood Ziad M , Habubi Nadir F , Chiad Sami S 
Published: November 2020

AbstractNanostructured TiO2:Mn thin films at diverse concentrations of Mn were deposited via chemical spray pyrolysis method (CPM). The XRD patterns hexagonal wurtzite structure with a dominant peak towards (101) plane. The Grain size of the deposited films is about (10.71-12.71) nm with Mn, whereas the strain (%) parameter decrease from 32.34 to 27.26 with Mn. AFM images show the TiO2:Mn effects surface morphology of the film, The grain size was in the area of (91.13), (67.79) and (64.94) nm for the (TiO2, TiO2:2% Mn, TiO2:4% Mn) respectively. Surface roughness of TiO2Thin films are RSM 16.6 to 3.68 nm, The average transmittance of the samples was 75 to 85% in the visible wavelength range from 300 to 900 nm. The bandgap values were 3.35 eV (undoped) to 3.15 eV (4 % Mn).
Synthesis Biological Evaluation and Theoretical Sudies of 2-(2,4-Dimethoxyphenyl)-4,5-Dihydro-1h-Imidazole Derevatives
Authors: Altameemi Hanaa A. , Kamel Barakat A. F. , Askar Firyal W. , Nief Olfat A. 
Published: November 2020

Abstract
The group of imidazoline derivatives is an important class of compounds that possess broad biological activity. Many derivatives that have been efficiently synthesized form 2-(-2,4-dimethoxyphenyl)-4,5dihydro-1H-imidazole as starting material to Synthesis of some derivatives. The structures were characterized by FTIR and 1H-NMR spectra. All The synthesized compounds were evaluated for their antimicrobial activities against two kind of bacteria (gram +ve) [ S. aureus, S.epidermi dis] and (gram –ve) [E.coli, Klebsiel lla spp] as well as fungi [C.albica ns] using the micro dilution procedure and compared with amoxicillin activity.
Spectrophotometric and thermodynamic study for Separation and preconcentration of Trace Amounts of Selenium Species After CPE
Authors: Ibrahim Zianab T. , Khammas Zuhair A. A. , Al-adilee Khalid J. 
Published: November 2020

Abstract
A new prepared chelating agent namely, 2-(Benzimidazolyl azo-4-benzyl phenol) (BIABP) is used for the determination of selenium species in water, rice and vegetables samples by a combination of cloud point extraction (CPE) method and spectrophotmetric techniques. The method involved a selective hydrophobic complex formation between selenium (IV) (and selenium (VI) after reduction with HCl under specified conditions) and (BIABP) at pH 5 which can efficiently be extracted in surfactant-rich phase of Triton X-114 and determined sepectrophotometrically at λmax of 534 nm. All significant factors for selenium (IV) complex that impact the separation and determination steps were discussed in detail by one factor-at-a-time (OFAT) optimization. The interferences and thermodynamic studies are also considered. At optimum conditions, the enrichment factor of 58 fold was obtained for Se (IV), leading to detection limits of 2.55 ng Se (IV) mL−1. The linear dynamic range, relative standard deviation (n=7 at 30 ng Se (IV), and the percent recovery were of 5-80 ng mL−1, 1.07% and 97.83±1.40. The described method is sensitive, easy to apply and has a slight interferences thereby the determination of selenium species in water, rice and vegetables samples was performed.
Optimization and Residence Time Distribution Study of Waste Cooking Oil Transesterification in a Continuous Stirred Tank Reactor
Authors: Jazie Ali A. 
Published: November 2020

Abstract
Waste cooking oil (WCO) transesterification using a catalyst of Dodecylbenzenesulfonic acid was investigated using a continuous stirred tank reactor. A techniques of surface response plus the design of centered composite were used for the optimizing the factors effecting on the process. The optimum conditions in this research were concluded as (catalyst amount: 1 wt. %; reaction time: 20 min; methanol/oil flow ratio: 4; reactor temperature: 60°C). The biodiesel obtained at the optimum conditions in the process was obtained at yield of 98.5%. The distribution of residence time was found experimentally and a dead zone of (110 cm3) was estimated in the CSTR using the compartment model. The physic-chemical properties for the biodiesel were found in agreement with the ASTM standard (D-6751-2) and the conventional diesel properties. The specific gravity value of biodiesel (0.87) was greater than that one of the diesel fuel (0.834). The calorific value was slightly lower than that one prescribed in the ASTM D-6751 specifications. The kinematic viscosity proved to be within the accepted limits of the. The flash point was found greater than the value specified in the ASTM and that for mineral diesel, which means safer. Acid value of 0.4 mg KOH/g was found accepted according to the biodiesel standard ASTM D-6751-2. Cetane value was found greater than that for mineral diesel.
The Effect of Adding Titanium Nanoparticle Oxide on the Physical Properties of Nickel by Powder Method
Authors: Humeedi Sufian H. , Shafeek Nihad Ali , Ahmeed Hameed H. , Darweesh Salih Y. 
Published: November 2020

Abstract
The study included nickel powder support by nano titanium oxide and silicon carbide (SiC) using the powder method wherein titanium oxide cementing percentages (5,10,15,20)% were taken while silicon carbide (SiC) was at a constant rate of 5% with The base material which of is nickel. Then, mixing the powders with an electric mixer for a two hours and pressing them with an electric piston at (5ton) for one minute. The resulting samples were sintered by a thermal oven at (1100°C) and using the argon gas to reduce oxidation for a period of only two hours. The structural structure of the models was studied by using a scanning electron microscope (SEM), as well as a study of mechanical properties that included hardness, compressive strength and wear. The results of the scanning electron microscope showed the homogeneity of the components of the mixed materials characteristically after the high sintering process, and the results of hardness before sintering were (90-132) Hv, when reinforcing from (0-20) %TiO2 while reaching the value of (110-189) Hv are reinforcing from (0-20) %TiO2 with sintering 1100°C, researchers also find that the compressive strength before sintering is (14-.822) MPa when reinforcing from (0-20) %TiO2, while it reached the value of (17.8-32) MPa when supporting from (0-20) %TiO2 and sintering 1100°C, while the wear rate after sintering was the lowest value which is at (20 TiO2%).
Effect of aqueous, alcoholic and acidic extract of rosemary leaves Rosmarinus officinalis in inhibiting the effect of free radicals manufactured and inhibitory effect in some microorganisms and detection of some active compounds
Authors: Mohammed Janan , Hateem Sarah Mutasher , Abdul Sattar Omar D. 
Published: November 2020

Abstract
The current study was conducted at the College of Science, Diyala University, in the Microbiology Laboratory.. Ecoli Klebsilla and Proteus, psudomanase. The study showed that the type of solvent extracted has an effect in determining the amount of antioxidant effectiveness whether the solvent is hot water, cold water, alcohol or acid. Acid but with a concentration of 5% where they had an effect inhibition of free radicals and the acidic extract added to it 5% hydrochloric acid effect of 72% in the inhibition of free radicals manufactured DPPH. The results showed that the type and concentration of the extract used in the study had an effect on the inhibition of the bacteria. Cold water extract has the highest inhibition of Psudomonas. The results of the qualitative detection of chemical compounds showed that the plant contains a large group of active compounds, including claycosides, tannins, flavonoids, turbines, resins and soaps, which are important therapeutic materials.
Green Chemistry Synthesis of Modified Silver Nanoparticles
Authors: AL-Rubaye Huda Ismail , AL-Rubaye Baidaa k. , Al-Abodi Entisar E. , Yousif Enaam Ismail 
Published: November 2020

Abstract
The important aspect of this unconventional approach is that eco-friendly, commercially available and straight forward method was used to prepared Silver Nanoparticles by using AgNO3 and curcumin solution as agent factor. The (TEM), (XRD), and (FTIR) was used to characterise these silver nanoparticles (AgNPs). Two types of bacterial isolates were used to indicate the antibacterial activity silver nanoparticles which prepared by curcumin solution, Gram negative like (Escherichia Coli E. Coli), & Gram positive (Stapha Urous). The results exhibit that silver nanoparticles synthesized by curcumin solution has effective antibacterial activities.
Synthesis, Characterization and Study of some of New Mefenamic Acid Derivatives as cytotoxic Agents
Authors: Mohammed Iman Assim , Kareem Mohanad Mousa 
Published: November 2020

Abstract
A new system drugs derivative was designed from Mefenamic Acid. These derivatives have been synthesized by reaction between mefenamic acid and different amino drugs via amide group. A number of compounds based on this new scaffold were prepared in good yields. These compounds have been purified and followed using TLC to determine purity with Rf value. All synthesized compounds structures were confirmed by 1H-NMR, 13CNMR and FTIR techniques. All compounds were evaluated for their anticancer and anti-bacterial activities. Some of the compounds synthesized showed cytotoxic activities in vitro. Most of synthesized compounds induced significant reduction in the cytotoxic response as compared with controls.
Using spent tea residue to elimination of chromium in aqueous liquid
Authors: Majeed Zainab N. , Farhan Safana A. , Dadoosh Rasha M. , Mohammed Hamid H. 
Published: November 2020

Abstract
In this work, spent red and black tea form leaves were assessed for their ability to doff expel chromium ion from aqueous solutions at various values of PH. Classification adsorption experiments indebted at choice temperature and showed cruise the adsorption of Cr ion decrease more the increase of temperature. In successive lyrics, the adsorption fight is exothermic and the enthalpy is fatal, at long last the unconventional ways and the entropy are positive. The matter copied at equal stat was compared with Langmuir, Freundlich models, and the inference efficiencies for Cr ion higher than 99% and can easily be achieved. It was hinge saunter the brilliant hatch is reform than hyacinthine cause in adsorption of chromium ion.
Metal Complexes of acetohydrazide Derivative: Characterization, and Antimicrobial Activity Study
Authors: Resen Nawal Daamy , Abed Asia Hameed , Zeyad sefauldeen Albayati , Firyal Weli Askar , Alkhaisy Thoraia M. 
Published: November 2020

Abstract
A novel derivative of 2,3-disubstituted quinazolin4(3H)-ones has been produced as of p-methoxybenzoylchloride and anthranilic acid, this prepared compound was used to produce a stable complexes. The ligand and complexes were isolated from the reaction in the solid form and characterized by FT-IR, UV-Visible, TLC, 1H NMR data and some physical measurements. Magnetic susceptibility data coupled with electronic spectra suggested octahedral structure of the complexes. The ligand and complexes were also employed with various bacterial. The products exhibited that the metal complexes have larger antimicrobial activities than ligand.