In this paper we have studied Jordan left derivation of a ٢-torsion free ring which
has a commutator left non- zero divisor and we initiate the study of generalized
Jordan left derivation of a ٢-torsion free ring, which has a commutator left non- zero
divisor.

Let R be an integral domain with quotient field K. A prime ideal P of R is called
a strongly prime ideal of R if for each x, y ∈ K, x y ∈ P implies x ∈ P or y ∈ P. In
this paper, we generalize this concept to submodules, thus we define strongly prime
submodules and give some of their properties.

In the present work, the different possible interactions between comet tail and the solar wind in the present of the inter-planetary magnetic field (IMF) had been studied. Magneto-hydrodynamic laws (MHD) were used to simulate interactions occurring between comet tail and solar wind using one –dimensional space. The model simulation was achieved using Lax-Wendroff explicit method. The interaction between cometary tail ions and solar wind can be understood by means of spatial distribution of new-generated ions from the comet nucleus with the homogenous flow of the solar wind plasma. The difference between average molecular mass of both types along with step-increase in the number of particles can reproduce the whole shape of the comet ta

     A new series of 2-(2-fluoro-[1,1'-biphenyl]-4-yl)propanoic acid derivatives were synthesized to enhance their Anti-Microbial activities. The new flurbiprofen hydrazon compounds (4a-e) prepared by reacting flurbiprofen ethyl ester with hydrazine hydrate to yield flurbiprofen hydrazid(3). Then compound (3) reacted with several aromatic aldehydes in absolute ethanol in presence of a small amount of glacial acetic acid to yield final compounds (4a-e). Each final compound was examined for its Anti-Microbial efficiency against G(+)ve bacteria (Streptococcus pyogenes, Staphylococcus aureus), G(-)ve bacteria (Escherichia coli, Klebsiella

In this paper, we deal with the problem of general matching of two images one of them has experienced geometrical transformations, to find the correspondence between two images. We develop the invariant moments for traditional techniques (moments of inertia) with new approach to enhance the performance for these methods. We test various projections directional moments, to extract the difference between Block Distance Moment (BDM) and evaluate their reliability. Three adaptive strategies are shown for projections directional moments, that are raster (vertical and horizontal) projection, Fan-Bean projection and new projection procedure that is the square projection method. Our paper started with the description of a new algorithm that is l

The present work investigates the optimal effect of SiC addition on the mechanical and microstructure properties of Al/SiC composites. The samples were prepared using powder metallurgy (PM) technique. Different weight percentages ranging from 10% to 50% of SiC powder were added and mixed with Al. The particle size of SiC particulates ranged between 20 and 45 μm. The subsequent mixture was poured into a cylindrical steel mould and pressed to obtain cylindrical shape samples of 10 mm in diameter. The prepared compact samples were sintered at a temperature of 650˚C. The influence of adding different weight percentages of SiC on the microstructure and mechanical characteristics of the composite was investigated. The XRD diffraction and SEM

The current research examines the distinct sensitivity displayed by WO₃/Pd films prepared using the Pulsed Laser Deposition (PLD technique using a porous silicon substrate (PS). Tungsten oxide impregnated with palladium (WO₃/Pd) films are created for the purpose of sensing Nitrogen Dioxide (NO₂) by employing PLD with different laser pulse energies of 600, 800, and 100 mJ). The ablation process utilizes a laser device that uses a Q-switched Nd:YAG crystal to produce high-intensity light pulses that are precisely 1064 nm in wavelength. A frequency of 1 Hz and a pulse duration of 10 ns characterise the laser system. It operates upon an n-type Si (111) substrate made of porous silicon. Field emission-scanning

Air pollution caused by gas emission dispersion leads to damage of the environment and is harmful to humans. In this article, we study and analyze the gas emissions of nitrogen oxide (NO_X), sulfur oxide (SO_X), and Total Petroleum Hydrocarbons (TPHs) in Al Rifaee City. The feedback and main source of pollution was due to the production of crude oil from the Gharraf oil field (GOF), located in the northwest direction of Al Rifaee City. The highest monthly total emission rate for all years was for TPHs (79499.8685 MMSCF); it was 6483.69, and 1560.73 tons) for NO_X and SO_X, respectively. The value of correlation factor R² for NO_X was equal to 0.190, which is higher than SO

استخدمت ثلاث مجاميع من تكون الفتران البيض Marsmsculus altinus وبالاعمار المختلفة (4) ليام و 10 اسابيع و 16 شهر) الدرسة التغيرات الصحية في قاع المعدة.

واظهرت نتائج الدراسة التسجية اختلافاً كبيراً في سماء ومكونات الطبقات المخاطية وتحت المخاطية و العضلية الخارجية. ظهرت الطبقات في عبدات ما بعد الولادة (4) ايام عمراً) الليلة النمو الصفيحة المخصوصة مشغولة بخلايا غير متخصصة، والعاد نشرة وخلاياها غير متمايزة، وال

New metal Complexes of two newly prepared Schiff bases (Ly and Ly) and three previously prepared Schiff bases HL, L, Liv by reacting 2-amino benzothiazole(2- ABT) with 2,4-dimethoxybenzaldehyde, salicylaldehyde, 4-hydroxy benzaldehyde, N,N-dimethyl-4-aminobenzaldehyde and from reaction of 2-aminothiazole (2-AT) with 2,4-dintethoxy benzaldehyde respectively. Structures were proposed depending on elemental and thermal analyses (TG and DTG) and by ir and u.v- visible spectra in addition to magnetic susceptibility and electrical conductivity measurements. Some of these compounds exhibited growth inhibition against two types of bacteria.

تم عزل وتلقية عزلات منتجة للمحلطة والمادة اللزجة وأخرى غير منتجة لها الجرثومة المكورات الذهبية (S) aureus) ملوثة المرضى وبيئة المستشفيات المحلية درس تأثير درجات الحرارة وقيم باء هاء المختلفة في التصاق سلالتين مختلفتين على أربع أسطح المواد الصنع منها الأدوات والعدد والمستلزمات الطبية والجراحية أظهرت النتائج أن كلنا السلالتين لم تتمكنا من الانتصاق على سطح الزجاج عند درجة 40 و كما أن السلالة المنتجة للمحفظة والم

A modified solvent extraction study was made to assess the validity of previously published claim that, în neutron irradiated ammonium dichromate heating leads to the generation of a reducing species that cause lowering of the value of retention. Simultaneous investigation of the behavior of both the ammonium and potassium salts showed this claim to be incorrect.

MINDO/3-FORCES calculations were carried out for the vibration frequencies and IR absorption intensities of phenanthrene radical fons. The obtained frequency values were compared with the experimental values when possible. It was found that the C-H stretobing frequencies are directly related to the carbon a-electron densities of the relevant atoms

This paper present a general review for chemical literature concerning the hybratilised (PIA-AAS) system scanned over the years late 1995 to late 2002 and including lots of technical innovation and developments of the this coupled system which typically utilisese the adequate precision, sensitivity and specificity (AAS) on one hand and simplicity high sample through put and economy of (FIA) on the other hand. It is worth mentioniny that a relatively large percent of persent publication of the system were abstracted from INTERNET

Gel filtration chromatography was used to separate free -anti total PSA antibody frora the complexes of anti total PSA antibody with the PSA immunoreactive isoforms [Free-PSA (F-PSA) and the complex of PSA with o antichymotrypsin (PSA-ACT)] in benign and malignant uterus tumors tissues in order to estimate the ratio of (F-PSA-PSA) or F-PSA%. The data obtained revealed that these ratios are different in benign patients from those of malignant patients. Spectrophotometric studies using UV. range (200-350 nm) was performed on PSA, anti total PSA antibody, and their complexes in both cases. The results revealed the presence of more than one type of complexes from the same tissue homogenate in both cases.

Polyacryla

The Cu, ZnSOD was purified from Radis lethospermi seed by ammonium sulphate precipitation followed by column chromatography using DEAE-FF, Sephadex G- 100and hydroxylapatite chromatography. Before extraction lipid was renoved by super critical fluid extraction (SCF). Pure copper, zinc superoxide dismutase bad a specific activity of 3555.9 units per milligram protein and was purified 211.5-fold with a yield of 19.3%. The isozyme has a molecular weight of 33 KDa and is composed of two non-covalently joined equal subunits, having 0.9340.02 g.atom Cu and 0.79-0.01 gatom Zn for each. The purified enzyme was stable over a pil range of 6.0-9.0 at 25°C and a temperature range of 25-45 °C. The purified RLS Cu,ZaSOD was sensitive to both cyanide

Copper tin sulfide (CTS) thin films were deposited on glass substrates using the spray pyrolysis technique. The solution mixture was sprayed onto the glass substrate at 310°C. The CTS thin films have a monoclinic crystal structure based on XRD analysis. FTIR confirmed Cu, Sn, and S chemical bonding, whereas the Scherrer formula predicted nanoscale particle size. The AFM analysis revealed a surface roughness measurement of 42 nm. Substrates coated with CTS film showed uniformity, which revealed the coated surface shape and design. A precise measurement of the substrate temperature was made. EDX confirmed Cu-Sn-S composition. For solar collector applications, thin films deposited in CTS were treated with a blue laser source with a 405 nm

Ten species of edible mushrooms (higher fungi) were tested for their ability to reduce cholesterol and glucose in mice blood. The powders of dried fruit bodies of these mushrooms were mixed with standard mice diet at 5 and 10% (on dry wt.). This diet was also supplemented with 2% of pure cholesterol and glucose. Though the significant reduction of blood cholesterol and glucose in mice fed on all tested mushrooms (at both concentrations) was recorded, maximum reduction of blood cholesterol in mice fed on 10% of Pleurotas ostreanus (Gray types, Lentous edodes, Pleurotus ostreatus (White type), Ganoderma lucidum and Pleurotus sajor caju was 52.55, 50, 485, 46.6 and 18.1% in males, and 50,42, 48.72, 46.4, 41.4 and 38.1% in females, respectiv

Background: Neutrophils destroy pathogens via phagocytosis. Neutrophils are effective innate and acquired immunity phagocytes. Low-density neutrophils are distinct neutrophil phenotypes linked to several systemic and infectious diseases. To our knowledge, low-density neutrophil phagocytosis in periodontitis has not been examined. Opsonized and non-opsonized fluorescent beads mixed with low-density neutrophils were gated and analyzed by flow cytometry to count cells that consumed at least one bead.

Aims of the Study: To estimate the potential impact of antibody (Ab)-labeled and non-labeled phagocytosis capacity of low-d

In this work, a single-mode endless photonic crystal fiber (PCF) is proposed and theoretically analysed using the empirical relationship method. The designed PCFs are composed of three uniform rings of air holes arranged in a circular shape. Three samples of fibers (PCFs_Pure, PCFs_doped1 and PCFs_doped2) with the same structure but are only different in the material of core have been investigated. The guiding properties of PCFs are studied in terms of effective refractive index, confinement loss and dispersion profile. The numerical results show that the PCFs_doped2 exhibits good properties such as high refractive index, low confinement loss and red shifting in th

In this research shows how radiation therapy can be improved and developed using different structures of glucose molecules (α‐D glucose) C₆H₁₂O₆ and C₁₂H₂₄O₁₂ after adsorption on silver nanoparticles-AgNPs surface. This is by enhancing the radiation sensitivity (SER) of cancer cells in the human lung and meanwhile preserving the healthy cells surrounding the tumour itself. The primary role of AgNPs is as radiosensitizers that work to increase the absorbed dose of radiation in the presence of nanocomposites. Using a mathematical model to calculate the number of cancer cells remaining when exposed to radiation doses, where radiation sensitivity of C₆H₁₂

An edge-emitting semiconductor laser (SL) source with a wavelength of 1310 nm is used experimentally to follow a transmitted signal that is subject to selected modifications. SL maximum measured optical power was -11 dBm at a temperature of 24oC, which is configured as a chaotic influencer semiconductor laser (ISL) in a unit of an optical neural network. The weight of the sent signal, after division, is controlled by two uniform Fiber Bragg gratings (FBGs) with slightly different periods. In addition, the feedback strength is changed by two radio frequency attenuators. The passing signal via these two filters is detected and summed again before being directly modulated and re-injected to the ISL again via the bias current. The results co

The wave functions of converted harmonic-oscillator in local scaling transformations are employed to evaluate charge distributions and elastic charge electron scattering form structures for ^6,7Li, ⁹Be, ^14,15N and ¹⁶O nuclei. The nuclear shell-model was fulfilled using Warburton-Brown  psd-shell (WBP) interaction with  truncation in  model space. Very good agreements with the experimental data were obtained for the aforementioned quantities. 

In this work, the effect of aluminum (Al) dust particles on the DC discharge plasma properties in argon was investigated. A magnetron is placed behind the cathode at different pressures and with varying amounts of Al. The plasma temperature (T_e) and density (n_e) were calculated using the Boltzmann equation and Stark broadening phenomena, which are considered the most important plasma variables through which the other plasma parameters were calculated. The measurements showed that the emission intensity decreases with increasing pressure from 0.06 to 0.4 Torr, and it slightly decreases with the addition of the NPs. The calculations showed that the n_e increased and T_e d

In this study, 60 urine samples were collected from healthy volunteer individuals (both males and females) residing in the Tuwaitha region (aged 20-60 years) and compared with 30 urine samples from individuals living in another area of Baghdad, far from AL- Tuwaitha nuclear site (aged 20-60 years). The uranium concentration of these samples was measured using a solid-state nuclear track detector CR-39. The results indicated that the average uranium concentration for the Tuwaitha group was 0.507±0.032μg/L, which is higher than the permissible limits set by the World Health Organization, which is 0.3μg/L. While the uranium concentration for the control group was 0.267±0.045μg/L. The study also explored the relationship between uranium