Study of the Singlet and the Triplet States of Two ElectronSystems in the First Excited State

Khalil H. Al  Bayati; Maysoon A. Mahmood

doi:10.21123/bsj.2010.7.1.36-40

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Publication Date

Sun Mar 07 2010

Journal Name

Baghdad Science Journal

Volume

7

Issue Number

1

DOI

10.21123/bsj.2010.7.1.36-40

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Study of the Singlet and the Triplet States of Two ElectronSystems in the First Excited State

"atomic properties/structure

quantum chemistry."

Khalil H. Al Bayati

Maysoon A. Mahmood

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A study of the singlet and triplet states of two electron systems in the first excited state was performed using a simple quantum mechanical model, which assigns the 1s,and 2s orbital with two different variational parameters. Our results agree with a high level calculation used by Snow and Bills.

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Tue Dec 13 2022

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Emergent Materials

Spectroscopic characteristics of highly pure metal oxide nanostructures prepared by DC reactive magnetron sputtering technique

Metal oxide

Nanostructures

Reactive sputtering

Magnetron sputtering

Asraa M.

Mohammed A.

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In this work, metal oxide nanostructures, mainly copper oxide (CuO), nickel oxide (NiO), titanium dioxide (TiO2), and multilayer structure, were synthesized by the DC reactive magnetron sputtering technique. The effect of deposition time on the spectroscopic characteristics, as well as on the nanoparticle size, was determined. A long deposition time allows more metal atoms sputtered from the target to bond to oxygen atoms and form CuO, NiO, or TiO2 molecules deposited as thin films on glass substrates. The structural characteristics of the final samples showed high structural purity as no other compounds than CuO, NiO, and TiO2 were found in the final samples. Also, the prepared multilayer structures did not show new compounds other than th

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Sama M.

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Thu May 25 2017

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Complete Genome Sequence of Lytic Bacteriophage VPUSM 8 against O1 El Tor Inaba Vibrio cholerae

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Rafidah Hanim

Phiaw Chong

Manickam

Chan Yean

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ABSTRACT The complete genome sequence of bacteriophage VPUSM 8 against O1 El Tor Inaba <named-content content-type="genus-species">Vibrio cholerae</named-content> is reported here. The isolated VPUSM 8 has potential use in future phage therapy or as a biocontrol agent for the prevention and treatment of cholera.

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Sun Jan 01 2017

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Adil A.

Zinah A. A.

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Wasnaa S.

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Fluorescence Characteristics of Coated- Cell Dye Solutions Containing Highly Pure Nanoparticles as Random Gain Media

Laser dye

Random gain media

Rhodamine B

Coumarin 102 Metrics

Murad R.

Mohammed A.

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In this work, enhancement to the fluorescence characteristics of laser dye solutions hosting highly-pure titanium dioxide nanoparticles as random gain media. This was achieved by coating two opposite sides of the cells containing these media with nanostructured thin films of highly-pure titanium dioxide. Two laser dyes; Rhodamine B and Coumarin 102, were used to prepare solutions in hexanol and methanol, respectively, as hosts for the nanoparticles. The nanoparticles and thin films were prepared by dc reactive magnetron sputtering technique. The enhancement was observed by the narrowing of fluorescence linewidth as well as by increasing the fluorescence intensity. These parameters were compared to those of the dye only and the dye solution

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Publication Date

Tue Sep 01 2015

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Nano Science And Nano Technology

Preparation CuInSe2 (CIS) by arrested precipitation method as alight absorption layer of photovoltaic solar-cells

CuInSe2

Nanoink

Arrested precipitation

Selenization

Ar- Atmosphere

Wasan

Omar

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The CuInSe2 (CIS) nanocrystals are synthesized by arrested precipitation from molecular precursors are added to a hot solvent with organic cap- ping ligands to control nanocrystal formation and growth. CIS thin films deposited onto glass substrate by spray - coating, then selenized in Ar- atmosphere to form CIS thin films. PVs were made with power conversion efficiencies of 0.631% as -deposited and 0.846% after selenization, for Mo coated, under AM 1.5 illumination. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) analysis it is evident that CIS have the chalcopyrite structure as the major phase with a preferred orientation along (112) direction and the atomic ratio of Cu : In : Se in the nanocrystals is nearly 1 : 1 : 2

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Publication Date

Fri Jun 16 2023

Journal Name

Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)

An update on Nanoparticle Formulation Design of Piperine to Improve its Oral bioavailability: A Review

piperine

bioavailability

solubility

formulation

pharmacokinetic

Akhmad Kharis

Nindya

Suwijiyo

Ronny

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Piperine, a crystalline alkaloid compound isolated from Piper nigrum, piper longum, and other types of piper, has had many fabulous pharmacological advantages for preventing and treating some specific diseases, such as analgesic, anti-inflammatory, hepatoprotective, antimetastatic, antithyroid, immunomodulatory, antitumor, rheumatoid arthritis, osteoarthritis, Alzheimer's, and improving the bioavailability of other drugs. However, its potential for clinical use through oral usage is hindered by water solubility and poor bioavailability. The low level of oral bioavailability is caused by low solubility in water and is photosensitive, susceptible to isomerization by UV light, which causes piperine concentration to decrease. Many different

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Tue Nov 09 2021

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artificial intelligence

upstream oil & gas

machine learning

optimization problem

correlation

presented

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reservoir pressure

Mohammed Ahmed

Omar F.

Dhifaf Jaafar

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AbstractArtificial lift techniques are a highly effective solution to aid the deterioration of the production especially for mature oil fields, gas lift is one of the oldest and most applied artificial lift methods especially for large oil fields, the gas that is required for injection is quite scarce and expensive resource, optimally allocating the injection rate in each well is a high importance task and not easily applicable. Conventional methods faced some major problems in solving this problem in a network with large number of wells, multi-constrains, multi-objectives, and limited amount of gas. This paper focuses on utilizing the Genetic Algorithm (GA) as a gas lift optimization algorit ... Show More

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A facile method of deriving solar selective nickel-cobalt oxide thin films via spraying process

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Hatem

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AbstractThe present study focuses on synthesizing solar selective absorber thin films, combining nanostructured, binary transition metal spinel features and a composite oxide of Co and Ni. Single-layered designs of crystalline spinel-type oxides using a facile, easy and relatively cost-effective wet chemical spray pyrolysis method were prepared with a crystalline structure of MxCo3−xO4. The role of the annealing temperature on the solar selective performance of nickel-cobalt oxide thin films (∼725 ± 20 nm thick) was investigated. XRD analysis confirmed the formation of high crystalline quality thin films with a crystallite si ... Show More

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