Digital Commons Network^™

Study Of Ratio Fission Width To Total Width For Fission Materials Bombarded By Monoenergitic Neutrons (2.4 Mev), Hadi Dawyich Zirzur Al-Attabi, Abbas Fadhil Al-Ammar, Hashim Ali Essa

Baghdad Science Journal

This study aims to know the way of the ratio fission width to total widthfor compound nuclei of fission materials , when it had been bombarded by monoenergetic neutrons as a function of nuclear radius and ranges ( 1-10) *10-13 cm , and it concluded the mathematical equations that can be used for this way of the study . Also we concluded the empirical relations by fitting method in which the ratio fission width to the total width for monoenergitic neutrons for various fission nucleuses, for Uranium-238 and Thorium-232 respectively.

Measurements Of Radon-222 And Its Daughters Concentrations In Buildings Of Department Physics In College Of Sciences Of Baghdad University, Nesreen B. Naji

Baghdad Science Journal

The present work aims to investigate approaches, measures and detection of indoor radon level in buildings of the department of physics in college of science of Baghdad University. CR-39 solid state nuclear track detectors were used to measure the radon concentrations inside the rooms, including five laboratories and five workplace rooms in ground and first storey of the department. The average radon concentration at first storey was found to be 43.1±13.2 Bq/m3 and 40.1±13.4 Bq/m3 at the ground storey. The highest level of radon concentration at the first storey in the radioactive sources store was 87.5±29 Bq/m3 while at the …

19th Annual Music For The Holidays: December 7, 2008, Bruce Broughton

School of Music Programs

This is the seventy-fifth program of the 2008-2009 season.

Center for the Performing Arts

December 7, 2008

Sunday

3:00 & 7:00 p.m.

Optium Conditions For The Production Of Neutral Protease From Local Strain Aspergillus Niger Var Cabonarius, Essam F. Al-Jumaily, Khalid A. Habeb, Shaimaa E. Kadhum

Baghdad Science Journal

The optimum conditions for the production of neutral protease from local strain Aspergillus niger var carbonarius by solid – state fermentation system (Wheat bran) moisted with 0.2 M phosphate buffer (PH7.0) . the hydration ratio was 1:5 (V:W) . the concentration of inoculum was 1×106 spores per 10 gram of solid materials , initial P H 6.5 and 96 hours of incubation period at 30° C .the enzyme activity was 1300 unit / ml and specific activity was 1550 unit / mg protein .

Developing Of Bacterial Mutagenic Assay System For Detection Of Environmental And Food Mutagens V – Using Anticancer Drug Cyclophosphamide, Zahra M. Al-Khafaji, Elham A. Kalaf, Gaith L Al-Azawi

Baghdad Science Journal

G-system composed of three isolates G3 ( Bacillus),G12 ( Arthrobacter )and G27 ( Brevibacterium) was used to detect the mutagenicity of the anticancer drug, cyclophosphamide (CP) under conditions similar to that used for standard mutagen, Nitrosoguanidine (NTG). The CP effected the survival fraction of isolates after treatment for 15 mins using gradual increasing concentrations, but at less extent comparing to NTG. The mutagenic effect of CP was at higher level than that of NTG when using streptomycin as a genetic marker, but the situation was reversed when using rifampicin resistant as a report marker. The latter effect appeared upon recording …

Three Dimensional Mhd Simulationof Comet Hale-Bopp Tail, Salman Zaidan Khalaf, Ahmed Abdul-Razzaq Selman

Baghdad Science Journal

The interaction between comet Hale-Bopp tail with the solar wind is investigated in the present paper using magneto-hydrodynamic (MHD) numerical simulation, which accounts for the presence of the interplanetary magnetic field (IMF). The simulation is based on three-dimensional Lax-Wendroff explicit scheme, providing second-order accuracy in space and time. The ions produced from the nucleus of the comet will add considerable effects on the microstructure of the solar wind, thus severely altering its physical properties. The present simulation focuses on careful analysis of these properties by means of simulating the behavior of the comet Hale-Bopp’s tail at 1 AU from the …

Cytogenetic Effect Of Crude Aqueous Extract From Leaf Of Lycium Barbarum On Root Tip Of Allium Cepa L., Batool A. Shahab, Samara N. Yaqub, Ali H. Adhia

Baghdad Science Journal

This study was carried out to investigate the cytogenetic effects of crude aqueous extract of Lycium barbarum on the roots tip of Allium cepa Using three concentration 125, 25, 50 mg/ ml for 2, 4, 6 hours treatment periods.This study were included some cytogenetic analysis such as mitotic index , phase index and chromosome aberration. The data showed that the treatment with 50mg/ml for 6huors led to reduce the mitotic index less than 50% . This reduction considered to have toxic and sublethal effect . These results revealed mutagenic potency by inducing differents type of chromosome aberration.

Effect Of Hardening To Drought Tolerance On The Moisture Content Of Sunflower Plant. I. Moisture Percentagein Root And Stem, K.M.M. Al-Jobori

Baghdad Science Journal

Two field experiments were conducted during the spring seasons of 2000,2001.The aim was to study the effect of hardening to drought tolerance on moisture percentage in root and stem of sunflower plant during growth stages . Asplit-split plots design was used with three replications.The main plots included irrigation treatments:irrigation to100%(full irrigation),75and50%of available soil water.The sub plots were the cultivars Euroflor and Flame.The sub-sub plots represented four seed soaking treatments : Control (unsoaked), soaking in water ,Paclobutrazol solution(250ppm),and Pix solution(500ppm). The soaking continued for 24 hours then seeds were dried at room temperature until they regained their original weight. Amount of …

Prepared (Pbs) Thin Film Doped With (Cu) And Study Structure Properties, Nada K. Abbas, Ramiz A. Al-Anssari, Kadhum J. Khudheir, Dawod M. Khudheir

Baghdad Science Journal

In this research PbS and PbS:Cu films were prepered with thicknesses (0.85±0.05)μm and (0.55±0.5)μm deposit on glass and silicon substrate respectively using chemical spray pyrolysis technique with a substrate temperature 573K, from lead nitrate salt, thiourea and copper chloride. Using XRD we study the structure properties for the undoped and doped films with copper .The analysis reveals that the structure of films were cubic polycrystalline FCC with a preferred orientation along (200) plane for the undoped films and 1% doping with copper but the orientation of (111) plane is preferred with 5% doping with the rest new peaks of films …

Nahrwan Clays Study For Brick Industry, Madiha Mohammed Shakir, Thamer Al-Shmery

Baghdad Science Journal

Nahrawan clay deposits lies in Diyala governorate , 65 Km, NE of Baghdad , according to the previous work in this field, in which they study the reserve belong to category of investigation ( C2& C1) , we choice the proper area to investigation of category (B) with drill net( 200x 200m ) to rise the amount of reserve. The investigation work included drilling (116) boreholes of total depth ranges from (10.0-12.55m) , showed mainly clayey and silty deposits with little sand , and the typical borehole (648) represents all types of sediment in the area , and most of …

New Method For Determination Of Molybdenum(Vi) Through Flow Injection Analysis Via The Consumption Of Liberated Oxygen From Reaction System Ammonia-Hydrogen Peroxide-Molybdenum(Vi) In The Presence Of Pyrogallol, Issam M.A. Shakir, Yasmeen H. Muhamad Ali, Nagam S. Turkey

Baghdad Science Journal

This piece of research work aims to study one of the most difficult reaction and determination due to continuous and rapid variation of reaction products and the reactants. As molybdenum (VI) aid in the decomposition of hydrogen peroxide in alkaline medium of ammomia, thus means a continuous liberation of oxygen which cuases and in a continuous manner a distraction in the measurement process. On this basis pyrogallol was used to absorbe all liberated oxygen and the result is an a clean undisturbed signals. Molybdenum (VI) was determined in the range of 4-100 μg.ml-1 with percentage linearity of 99.8% or (4-300 …

Evaluation Of Home-Mode Elisa System For Thedetection Of Antibodies Against Escherichia Coli O157:H7 Using Purified Lipopolysaccharide, Haitham A. Baqir, Ashwaq B. Al- Hashimi, Amina N Al-Thuwani

Baghdad Science Journal

An enzyme linked immunosorbent assay (ELISA) for the detection and quantitation of human immunoglobulin G (IgG) antibodies against vero- cytotoxine (VT) producing Escherichia coli serogroup O157:H7 was produced. E. coli O157: H7 lipopolysaccharide was extracted from locally isolated strains by using hot phenol- water method, followed by partial purification using gel filtration chromatography by sepharose- 4B. The purity of the lipopolysaccharide was checked by measuring the protein and nucleic acid content and then used as antigen. Four isolates of vero- cytotoxin producing E. coli serogroup O157:H7 was obtained by culturing 350 stool samples from children suffering from bloody diarrhea. These …

Optical Properties For Sete Thin Films, Salma M. Shaban

Baghdad Science Journal

Chalcogenide glasses SeTe have been prepared from the high purity constituent elements .Thin films of SeTe compound have been deposited by thermal evaporation onto glass substrates for different values of film thickness . The effect of varying thickness on the value of the optical gap is reported . The resultant films were in amorphous nature . The transmittance spectra was measured for that films in the wavelength range (400-1100) nm . The energy gap for such films was determined .

The Effect Of Doping Ratio Of Cu On The Structural Properties Of Cdse Films, E.M.N. Al-Fawad

Baghdad Science Journal

Films of CdSe have been prepared by evaporation technique with thickness 1μm. Doping with Cu was achieved using annealing under argon atmosphere. The Structure properties of these films are investigated by X-ray diffraction analysis. Theeffect of Cu doping on the orientation , relative intensity, grain size and the lattice constant has been studied. The pure CdSe films have been found consist of amorphousstructure with very small peak at (002)plane. The films were polycrystalline for doped CdSe with (1&2wt%)Cu contents and with lattice constant (a=3.741,c=7.096)A°, and it has better crystallinty as theCu contents increased to (3&5wt%) Cu. The reflections from [(002), …

Improvement Of The Monochrome Image Hologram By Using A Random Phase And Increasing Number Of Samples, Raied K. Jamal

Baghdad Science Journal

This paper present a study about effect of the random phase and expansion of the scale sampling factors to improve the monochrome image hologram and compared it with previous produced others. Matlab software is used to synthesize and reconstruction hologram.

Polar Gap Properties For Neutron Starwithin Light Cylinder Limits, Sundus A. Abdullah

Baghdad Science Journal

The huge magnetic fields of neutron star cause the nuclei of the stellar surface to form a tightly bound condensed layer. In this research some characteristics of polar gap and magnetosphere enclosed the star according to Sturrock Model were illustrated, positrons move out along the open field lines, and electrons flow to the stellar surface as in the related to Sturrock model. The magnetic field within polar gap areas, which is defined by the Irvin Radius (RL) decreases due to the expansion of the polar, resulting from the physical motion of the accreted material. The values of height gap at …

Synthesis And Copolymerization Of Several N-Substituted Acrylamides, Ahlam Marouf Al-Azzawi, Entisar Obaid Al-Tamimi, Rana Abid Ali

Baghdad Science Journal

Five N-substituted acrylamides were prepared by reaction of substituted aromatic primary amines with acryloyl chloride in the presence of triethyl amine. The synthesized acrylamides were allowed to introduce copolymerization reaction with three vinylic monomers including acrylonitrile, methyl acrylate and methyl methacrylate respectively to obtain eleven new copolymers having different physical properties which may used in different applications.

Synthesis Of New Heterocyclic Compounds Derived From Anthrone And Evaluation Of Their Biological Activity, Nadia Adil Salih

Baghdad Science Journal

In this research, Schiff bases derived from the reaction of anthrone with different heterocyclic amines have been described. The resulted Schiff base compounds were reacted with various nucleophiles in order to obtain new heterocyclic derivatives. Chemical structures of all products were confirmed by IR, 1H-, 13C-NMR spectral data and elemental analysis. All synthesized compounds were in vitro tested against a standard strain of pathogenic microorganism including Gram +ve bacteria (Staphylococcus aureus), Gram –ve bacteria (Escherichia coli), and fungi (Candida albicans).

Oscillation Of Nonlinear Differential Equations With Advanced Arguments, Hussain Ali Mohamad, Sada F. Mohammed, Awatif A. Hassan

Baghdad Science Journal

This paper is concerned with the oscillation of all solutions of the n-th order delay differential equation x^(n)(t)+P(t) f(x((t)))=0, n≥2. The necessary and sufficient conditions for oscillatory solutions are obtained and other conditions for nonoscillatory solution to converge to zero are established.

On Certain Sub-Space Of X, Mushtaq Shakir Al-Shaibani

Baghdad Science Journal

The study of properties of space of entire functions of several complex variables was initiated by Kamthan [4] using the topological properties of the space. We have introduced in this paper the sub-space of space of entire functions of several complex variables which is studied by Kamthan.

On Cso-Compact Space, Zina M. Kadem, Jalal Hatem Hussein

Baghdad Science Journal

The aim of this paper is to introduces and study the concept of CSO-compact space via the notation of simply-open sets as well as to investigate their relationship to some well known classes of topological spaces and give some of his properties.

Optimal Color Model For Information Hidingin Color Images, Ali Kadhim Mousa, Zainab Hussain Kadhim

Baghdad Science Journal

In present work the effort has been put in finding the most suitable color model for the application of information hiding in color images. We test the most commonly used color models; RGB, YIQ, YUV, YCbCr1 and YCbCr2. The same procedures of embedding, detection and evaluation were applied to find which color model is most appropriate for information hiding. The new in this work, we take into consideration the value of errors that generated during transformations among color models. The results show YUV and YIQ color models are the best for information hiding in color images.

An Approximate Solution Of Fredhom Integral Equation Using Bernstein Polynomials, Haleema S. Ali, Waleeda S. Ali

Baghdad Science Journal

In this paper, Bernstein polynomials method has used to find an approximate solution for Fredholm integral equation of the second kind. These polynomials are incredibly useful mathematical tools, because they are simply defined, can be calculated quickly on computer systems and represent a tremendous variety of functions. They can be differentiated and integrated easily.

Modeling Of Mixing Time For Bioreactors With Self-Inducing Impellers, Alaa K. M.

Baghdad Science Journal

the mixing time is one of the most useful criterions for characterization of the broths mixing intensity and for scaling up of biosynthesis processes. this parameter value depends mainly on the presence of biomass in the broths, mixing system characteristics and operating conditions. For quantifying the influence of these factors on mixing efficiency, this study was carried out for simulated fermentation aerated broths consisted of carboxymethyl cellulose sodium salt (CMCNa) taking into account the broth's viscosity, rotation speed (rpm) and the stirrer geometry. The experimental results were used in obtaining a correlation to calculate the mixing time for Re <5000, domain of flow regime for which only few data are available from literature. t_m=1.6x10^3xμ^0.43_a/N^1.13X L^0.53 This model offer a good concordance with the experimental results, the average deviation being of 6.6% for CMCNa solutions and can be used for fermentation scaling up.

Synthesis,Antibacterial Activity Of 2-Amino 5-Phenyl -1,3,4- Oxadiazole Derivatives, Hussain Jassem Mohammed

Baghdad Science Journal

In the present investigation, five derivatives were synthesized as potential antimicrobial agents , The compounds are : 2-amino 5-phenyl - 1,3,4- oxadiazole dithi-ocarbomate, 2-amino 5-( 4-amino- N,N-dimethyl phenyl)- 1,3,4- oxadiazole, 2-amino 5- (4-amino N,N- dimethyl phenyl)- 1,3,4- oxadizole dithiocarbamate, 2-amino 5-(4-nitr-ophenyl)-1,3,4-oxadiazole, 2-amino 5-(4-nirophenyl)-1,3,4- oxadiazole dithiocarbamate. The above newly synthesized compounds were investigated for their antibacterial, antifungal activities. The results of the biological revealed that the compounds activities against S.aureuss and B.subtilis and also P.aeureoginosa and Staph. Aureus. The prepared compounds were characterized by infrared spectrum, 1HNMR nuclear magnetic resonance and some physical properties.

The Use Of Wastewater And Inorganic Fertilizers As Nutrients Source For Cultivation Of Diatom Nitzschia Palea, Hussain A. Al-Saadi, Thaer I. Kassim, Jennan S. Al-Hassany

Baghdad Science Journal

Two kinds of alternative media (domestic wastewater and inorganic fertilizers) were used for cultivation of diatom Nitzschiapalea (Kuetz.)W. Smith in control conditions (temperature 25°C and light intensity 260 µE/m²/sec). These media were mixed with modified Chu-10 medium. Highest growth rate (0.56 cell/h) and lowest doubling time (13 cell/h) recorded for 50% wastewater supported with Chu-10. Followed, by inorganic fertilizers media formed of 125mg/L N:P:K, 12.5mg/L supper phosphate P2O5, 100 mg/L magnesium sulphate and 10 mg/L sodium silicate, which gives 0.35 cell/h of growth rate, 20.75 h doubling time, 9.75 × 106 cell/ml of cells count and absorption of 0.86 nm. …

Investigation Of Heterogeneity Of Fsw Inconel 718 Coupled With Welding Thermal Cycle, Dong Fang Huang

Theses and Dissertations

In order to develop a better understanding of the property, microstructure evolution and thermal history of FSW Inconel 718's, the strain, strain rate and thermal cycles need to be determined. In order to estimate the strain field of a deformed body, a displacement function needs to be determined. A 3D deformation model was developed to determine the displacement coefficients. A rectangular box created in this model deforms following a linear displacement function. Three orthogonal planes cut this deformed box, which leads to three deformed planes. The shape parameters (L, H, θ¹ and θ²) on the three orthogonal planes can be …

Global Shanghai News

China Beat Blog: Archive 2008-2012

Regular readers of this blog may think it is a bit redundant for me to do a “Self-promotion Saturday” post about Global Shanghai, 1850-2010: A History in Fragments, since I’ve managed to slip references to and images of the cover of my new book onto the site already in recent a piece about the 1980s and one about the Beijing Forum, cell phones, and a Chinese Obama joke.

Still, when you’ve worked on a publication as long as I labored on this one (even though it is a short, it took well over a decade to get from first inspiration …

2008 Holiday Party, The Rockefeller University

Posters

The Annual Rockefeller University Holiday Party

Aaron Neville And His Quintet Featuring Charles Neville, Center For Performing Arts

Center for Performing Arts Memorabilia

Autographed playbill insert for the December 6, 2008 performance of Aaron Neville and his Quintet featuring Charles Neville.