Abstract

      The target derivative are gentamicin linked with L-Val- L-Ala by an ester linkage. These were synthesized by esterification method, which included the reaction of -OH hydroxyl group on (carbon No.5) of gentamicin with the acid chloride of the corresponding dipeptide, The preparation of new derivative of gentamicin involved protected the primary & secondary amine groups of Gentamicin, by Ethylchloroformate (ECF) to give N-carbomethoxy Gentamicin which was used for further chemical synthesis involving the free hydroxyl groups.

Then prepared dipeptide (L-Val- L-Ala) by conventional solution method in present DCC & HoBt then reacted with thionyl

The sensors based on Nickel oxide doped chromic oxide (NiO: Cr2O3) nanoparticals were fabricated using thick-film screen printing of sol-gel grown powders. The structural, morphological investigations were carried out using XRD, AFM, and FESEM. Furthermore, the gas responsivity were evaluated towards the NH3 and NO2 gas. The NiO0.10: Cr2O3 nanoparticles exhibited excellent response of 95 % at 100oC and better selectivity towards NH3 with low response and recovery time as compared to pure Cr2O3 and can stand as reliable sensor element for NH3 sensor related applications.

توجد هناك العدید من التطبیقات الهولوغ ا رمیة الحاسوبیة من بینها إنتاج عناصر ضوئیة هولوغ ا رمیة
حیث عن طریقها یمكن إنتاج جبهة أي موجة مرغوبة فیها، حیث (Grating) حاسوبیة والمتمثلة بالمحز ا زت
في .(Binary Synthetic Hologram) اعُتمِدَ في صناعتها على تقنیة الهولوغ ا رمات المصطنعة الثنائیة
وجبهة (Spherical Wavefront) هذا البحث تم بناء محزز هولوغ ا رمي لانتاج جبهة الموجة الكرویة
وهذه الموجات المذكورة سابقاً تم إعادة بنائُها بطریقتین،

In this paper a thin films of selenium was prepare on substrates of n-Si by evaporation in a vacuum technique with thickness about 0.5μm. And then an annealing process was done on samples at two temperature (100 and 200) C ° in a vacuum furnace (10^-3 torr).
Some structural, optical and mechanical properties of prepared thin films were measured. Results showed that the prepared film was the crystallization, optical transmittance and micro hardness of the prepared thin films increased significantly after annealing.

In an earlier paper, the basic analytical formula for particle-hole nuclear state densities was derived for non-Equidistant Spacing Model (non-ESM) approach. In this paper, an extension of the former equation was made to include pairing. Also a suggestion was made to derive the exact formula for the particle-hole state densities that depends exactly on Fermi energy and nuclear binding energies. The results indicated that the effects of pairing reduce the state density values, with similar dependence in the ESM system but with less strength. The results of the suggested exact formula indicated some modification from earlier non-ESM approximate treatment, on the cost of more calculation time

The acute phase response is a major pathophysiologic phenomenon that accompanies inflammation whether acute or chronic. Complement (C3 and C4) and C - reactive protein (CRP) are positive acute phase proteins (+ ve APPs ). Their production takes place in hepatocyte and the blood concentration of these parameters are increased in osteoarthritis (OA). Chloroquine (CQ) is a diprotic weak base traditionally used to treat malaria. Recently the phosphate salt of CQ is used to decrease this type of (+ve APPs) . In this study,  patients who suffered from knee osteoarthritis (KOA) are treated with oral dosage form of chloroquine phosphate (CQP) for one month, twice daily. Our results demonstrate that CQP improves the patient status by decreas

This project aimed to calculate the changing of half wave voltage with the
wavelength. In addition to that we calculate the half wave voltage for an Electro-optic
modulator system consist of LiNbO3 crystal using the transverse linear Electro-optic
effect at 0.810m m wavelength.

This research was designed to investigate the factors affecting the frequency of use of ride-hailing in a fast-growing metropolitan region in Southeast Asia, Kuala Lumpur. An intercept survey was used to conduct this study in three potential locations that were acknowledged by one of the most famous ride-hailing companies in Kuala Lumpur. This study used non-parametric and machine learning techniques to analyze the data, including the Pearson chi-square test and Bayesian Network. From 38 statements (input variables), the Pearson chi-square test identified 14 variables as the most important. These variables were used as predictors in developing a BN model that predicts the probability of weekly usage frequency of ride-hai

Migraine is a prevalent chronic condition that is often characterized by recurrent incapacitating headache attacks and related symptoms. The purpose of this investigation was to assess the potential effects of antioxidants on migraine disease. The main goal of the study was to measure the concentrations of many important antioxidants, such as catalase (CAT), superoxide dismutase (SOD), thioredoxin (TRX), and glutathione peroxidase 1 (GPX1). Ninety participants were recruited from the outpatient headache clinic of the neurology department at Al Jumhury Teaching Hospital in Erbil City for this study. In this study, there were 60 patients with migraine and 30 controls. Among the migraine group, there were 45 female and 15 male participants,

From Ministry of Health records from 1989-1995, Giardiasis in human being was recorded betw

تتمثل مشكلة البحث الموسوم بـ (استراتيجية الابداع والابتكار في تصميم المنتجات ) بالكيفية التي يمكن لأستراتيجية الابداع والابتكار ان تسهم وبشكل فاعل في تصميم المنتجات ، وتكمن اهمية البحث في التعرف على اهم الاستراتيجيات المتبعة من قبل المصممين لتلبية حاجات ورغبات المستهلكين بتفوق ونجاح ، اما هدف البحث فيكون من خلال بيان مدى تأثير استراتيجيات الابداع والابتكار في امكانية طرح منتجات جديدة للاسواق ، فضلاً عن ا

The present study deals with the websites of Iraqi political parties on the internet to identify the effectiveness in providing communicative applications that help audience to participate, express their opinions, their positions, and other aspects reflecting the extent of employing modern technological tools to allow opportunities for political, and democratic participation since the internet has become an effective tool for political communications of political parties. The research sample includes eight political parties. The research concludes that the Iraqi political parties do not employ interactive communication patterns to reflect their interests in communicating with the public, providing opportunities for their participation an

    This paper defines a method for sputtering high strength, extremely conductive silver mirrors on glass substrates at temperatures ranging from 20^o to 22^o C. The silver coated layer thicknesses in this work ranges from 7.5 to 16.1 nm using sputtering time from 10 to 30 min at power 25 W, 13.7 to 29.2 nm for time 10 to 30 min at 50 W, 15.7 to 26.4 nm for time 10 to 30 min at 75 W and 13.8 to 31.1 nm for time 10 to 30 min at 100 W. The optimum values of pressure and electrode gape for plasma sputtering system are 0.1 mbar and 5 cm respectively. The effect of DC sputtering power, sputtering duration or (sputtering time), and thickness on optical properties was investigated using an ultraviolet-visible spectrophot

This experiment were conducted to compare the effect of aqueous leaves extract of Melia azedarach and Anastatica hierochuntic with the antibiotic (Enrofloxaccin) for 49 days, 270 chicks one day old (Ross 308) were randomly distributed into 6 treatments with 3 replicates per treatment and 15 chicks per replicate (45 chicks/treatment). The first treatment were the control, antibiotic (enrofloxaccin) were used in the second treatment at rate of 0.5 ml per liter of tap water, in the 3rd and 4th treatment the aqueous leaves extract of Anastatica hierochuntic were used at rate of 10 and 15 mg/L respectively, and in the 5th and 6th treatment the aqueous leaves extract of Melia azedarach were used at rate of 10 and 15 mg / ml resp. At the end of

Alloys of GaxSb1-x system with different Ga concentration (x=0.4, 0.5, 0.6) have been prepared in evacuated quartz tubes. The structure of the alloys were examined by X-ray diffraction analysis (XRD) and found to be polycrystalline of zincblend structure with strong crystalline orientation (220). Thin films of GaxSb1-x system of about 1.0 μm thickness have been deposited by flash evaporation method on glass substrate at 473K substrate temperature (Ts) and under pressure 10-6 mbar. This study concentrated on the effect of Ga concentration (x) on some physical properties of GaxSb1-x thin films such as structural and optical properties. The structure of prepared films for various values of x was polycrystalline. The X-ray diffraction analy

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In this study, optical fibers were designed and implemented as a chemical sensor based on surface plasmon resonance (SPR) to estimate the age of the oil used in electrical transformers. The study depends on the refractive indices of the oil. The sensor was created by embedding the center portion of the optical fiber in a resin block, followed by polishing, and tapering to create the optical fiber sensor. The tapering time was 50 min. The multi-mode optical fiber was coated with 60 nm thickness gold metal. The deposition length was 4 cm. The sensor's resonance wavelength was 415 nm. The primary sensor parameters were calculated, including sensitivity (6.25), signal-to-noise ratio (2.38), figure of merit (4.88), and accuracy (3.2)

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

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Zygapophyseal joints (or facet joints), are a plane synovial joint which located between the articular facet processes of the vertebral arch which is freely guided movable joints. Ten dried vertebrae were used for the lumbar region and taking (L₄) as a sample to reveal stress pathways across the joints by using ANSYS program under different loading conditions which used Finite Elements Analysis model. Results obtained from the ANSYS program are important in understanding the boundary conditions for load analysis and the points of stress concentration which explained from the anatomical point of view and linked to muscle and ligament attachments. This model used as a computational tool to joint biomechanics and to prosthetic im

A -set in the projective line is a set of  projectively distinct points. From the fundamental theorem over the projective line, all -sets are projectively equivalent. In this research, the inequivalent -sets in have been computed and each -set classified to its -sets where  Also, the  has been splitting into two distinct -sets, equivalent and inequivalent.

Three end-to-end intestinal anastomosis techniques have been compared in twenty horses, divided

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In this paper, we obtain a complete characterization for the norm and the minimum norm attainment sets of bounded linear operators on a real Banach spaces at a vector in the unit sphere, using approximate 𝜖-Birkhoff-James orthogonality techniques. As an application of the results, we obtained a useful characterization of
bounded linear operators on a real Banach spaces. Also, using approximate 𝜖-Birkhoff -James orthogonality proved that a Banach space is a reflexive if and only if for any closed hyperspace of , there exists a rank one linear operator such that , for some vectors in and such that 𝜖 .Mathematics subject classification (2010): 46B20, 46B04, 47L05.

     Improving the performance of visual computing systems is achieved by removing unwanted reflections from a picture captured in front of a glass. Reflection and transmission layers are superimposed in a linear form at the reflected photographs. Decomposing an image into these layers is often a difficult task. Plentiful classical separation methods are available in the literature which either works on a single image or requires multiple images. The major step in reflection removal is the detection of reflection and background edges. Separation of the background and reflection layers is depended on edge categorization results. In this paper a wavelet transform is used as a prior estimation of background edges to sepa

Thirty-six local dose have been used and were divided in to three groups sacording to weight, in each group twelve dose

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