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Prospect of CW Raman Laser in Silicon- on- Insulator Nano-Waveguides
 
Numerical analysis predicts that continuous-wave (CW) Raman lasing is possible in Silicon-On-insulator (SOI) nano-waveguides, despite of presence of free carrier absorption. The scope of this paper lies on lasers for communication systems around 1550 nm wavelength. Two types of waveguide structures Strip and Rib waveguides have been incorporated. The waveguide structures have designed to be 220 nm in height. Three different widths of (350, 450, 1000) nm were studied. The dependence of lasing of the SOI Raman laser on effective carrier lifetime was discussed, produced by tow photon absorption. At telecommunication wavelength of 1550 nm, Raman lasing threshold was calculated to be 1.7 mW in Rib SOI waveguide with dimensions width (W= 450 nm) and Length (L= 25 mm). The obtained Raman lasing is the lowest reported value at relatively high reflectivities. Raman laser in SOI nano-waveguides presents the important step towards integrated on-chip optoelectronic devices.
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Publication Date
Fri Jun 28 2019
Journal Name
Journal Of The College Of Education For Women
Following the Example of Prophet (PBUH) in Reciting Qur'an

The Almighty Allah has addressed His followers by advising them to follow the example of the prophet (PBUH). Allah says:  (INDEED IN THE MESSENGER OF ALLAH YOU HAVE A GOOD EXAMPLE TO FOLLOW). So, He was a true and everlasting example for the people to follow and imitate in all aspects of life. Knowledge and learning, especially Qura'nic knowledge, are among the priorities.

The present study is concerned with how to follow the Prophet example (PBUH) in the field of Qur'an reciting. It aims at showing His instructions on Qur'an reciting, and how He was followed by His Companions. The present study falls into an introduction and four sections. Section One deals with the commands given by Allah to follow His prophet. Second Two

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Publication Date
Tue Mar 15 2022
Journal Name
Al-academy
Dramatic function of temporal variables in the feature film

Time and space are indispensable basics in cinematic art. They contain the characters, their actions and the nature of events, as well as their expressive abilities to express many ideas and information. However, the process of collecting space and time in one term is space-time, and it is one of Einstein’s theoretical propositions, who sees that Time is an added dimension within the place, so the study here differs from the previous one, and this is what the researcher determined in the topic of his research, which was titled (The Dramatic Function of Space-Time Variables in the Narrative Film), Which included the following: The research problem, which crystallized in the following question: What is the dramatic function of the tempor

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Publication Date
Thu Feb 24 2022
Journal Name
Journal Of Educational And Psychological Researches
Psychological effects of electronic games In children and adolescents

The proliferation of electronic games, video games and computers has caused children and teenagers to become attracted to these games and become their favorite entertainment. The widespread of these games has generated widespread debate about positive aspects and negative aspects. It is evident that there are two main trends in the impact of electronic games on the behavior of children and adolescents. The first trend is that e-games have positive effects on children and adolescents, especially in cognitive abilities and skills in learning. While the second view sees that electronic games have negative effects that appear in social isolation and lack of movement and aggression. Through the review of previous literature, the current resea

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Publication Date
Thu Dec 26 2019
Journal Name
Bulletin Of The Iraq Natural History Museum (p-issn: 1017-8678 , E-issn: 2311-9799)
REVISION OF THE FAMILY SPHECIDAE (HYMENOPTERA, APOIDEA) IN IRAQ

    A revision study of the Sphecidae from Iraq is presented. A survey is conducted to collect the specimens from different regions; generally, there were 41 species belonging to 12 genera and 4 subfamilies are revised with synonyms.

 

    The current investigation included the species previously reported in Iraq, which were not collected during the current investigations; the distribution and other information are also provided.

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Publication Date
Sun Oct 01 2006
Journal Name
Journal Of The Faculty Of Medicine Baghdad
Cadmium Chloride (CdCl2)-Induced Apoptosis in Liver of Mice

Background: Cadmium (Cd) is an industrial and environmental pollutant that affect adversely a number of organs in humans and other mammals.
Objectives: To study the effect of cadmium on liver of mice.
Material and Methods: Male Balb/c mice weighing 30-32 gm, 60 days old, were treated intraperitoneally (ip) with (1-10mg/kg body wt. /CdCl2). The body weight, liver weight, histological examination of liver, SEM, metal analysis along with DNA ladder for apoptosis.
Results: Cadmium induced both a time, and dose dependent increase in apoptotic, severity of necrosis. Liver weight, body weight decreased with increase of dose, while metal content was increased by increase of dose.
Conclusion: It has been concluded that cadmium caused

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Publication Date
Mon Jan 02 2017
Journal Name
Al-academy
Implementation of Sound Effects in the Iraqi Children’s Theatre

Sound effects are considered to be a key element in children’s theatre, for it relays the context and amplifies its understandability, acceptability and its impact on the audience, so it’s a fundamental method in portraying the characters within the idea or the story, to produce the title and content with completeness in its relations that are associated with the rest of the fundamental elements represented in lighting, costumes, dialogue, decoration, etc. And this research included a set of subjects that are related to implementing the sound effects used in the Iraqi children’s theatre plays, chapter one included the problem and the need for studying this subject, as well as its importance and aim, and specifying the basic phrases

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Publication Date
Sun Jul 02 2017
Journal Name
Journal Of The Faculty Of Medicine Baghdad
Microbiological assessment of the cervix in patients with Infertility

Background: Diagnostic laparoscopy is the standard procedure performed as the final test in the infertility work up before progressing to infertility treatment, but it was found that laparoscopy may increase the risk of pelvic infection which is one of the causes of infertility either in men or women.
Objectives: To assess the cervix microbiologically in patients who were planned to have diagnostic laparoscopy as part of infertility investigations.
Patients and methods: A cross sectional study done at department of obstetrics & gynecology, Baghdad teaching hospital, Medical city, Baghdad, Iraq in 2013, over a period of 7 months, cervical swabs were taken from 30 women complaining of infertility, just before diagnostic laparosco

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Publication Date
Wed Jun 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
The Role of Behavioral Approach In Financial Reporting Enhancement

 This study seeks to highlights on the behavioral approach in organization theory as modern and effective entrance in constructing this theory and reflection extent on the behavior of both the product and the information user (accountant and financial information).

 The study also focus on behavioral approach role in consolidating accounting concepts through making harmony between them so that the accountant can influence the user behavior with the concepts and principles of accounting in an effort to provide quality characteristic of accounting information produced by him in consistent with his behavior and information user and its impact on the decision making process by the latter.

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Publication Date
Mon Jan 11 2021
Journal Name
Journal Of Planner And Development
The Social Aspect of Vertical Landscape in Residential Buildings

The great raise and development of residential buildings in modern cities worldwide as a result of urban extends leads to environmental and social problems, that make the designers looking for more complicated and innovative solutions. To encounter these, most advanced technologies in construction had been used resulting buildings had become higher, which was moved away from the land called residential housing. And with the development of these buildings, increase in the inhabitants inside; generate distant from nature, which increased the need for interactive outdoor recreational spaces open green in its high sections, was an alternative or complementary option to outer space at the ground level. Therefore, the research problem has emer

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Publication Date
Sun Jun 07 2009
Journal Name
Baghdad Science Journal
Check List of the algae in Diyala River, Iraq

A total of 722 algal taxa are recorded in Diyala River by different authors. Most of the identification algae belong to three Divisions: Bacillariophyceae (367, 50.8%), Chlorophyceae (179, 24.8%), and Cyanophyceae (126, 17.5%).

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