This paper presents the theoretical and experimental results of drilling high density
polyethylene sheet with thickness of 1 mm using millisecond Nd:YAG pulsed laser. Effects of laser
parameters including laser energy, pulse duration and peak power were investigated. To describe and
understand the mechanism of the drilling process Comsol multiphysics package version 4.3b was used to
simulate the process. Both of the computational and experimental results indicated that the drilling
process has been carried out successfully and there are two phases introduced in the drilling process,
vaporization and melting. Each portion of these phases depend on the laser parameters used in the
drilling process

Aljazri made an effort to prominence the scientific rank of
reporters through transfer accurate expressions reflects the
heighest ability of reporter . these opinions are often of the
translator's companions or of his students who heard and studied
from him . Their phrases are included in the translator's edited.
Most of the time, they are brief phrases that indicate precise
meaning

The purpose of this study was to develop poloxamer-based in-situ gel of chloramphenicol aiming to increase bioavailability and prolong corneal contact time, controlling drug release, and enhancing ocular bioavailability. The in-situ gel was prepared using different concentrations of poloxamer 407 combined with hydroxypropyl methyl cellulose (HPMC) or carbapol 940 to achieve gelation temperature about physiological temperature and improve rheological behavior and gelling properties of poloxamer gel. The prepared formulations were evaluated for their appearance, pH, and sol-gel transition temperature. The formulations F₂, F₃, and F₅ have a gelation temperature within the accepted range 35-37⁰C an

 تضمن البحث قياس المواصفات الفيزياوية والكيميائية والاحيائية للمياه الخام والمنتجة في ثلاث محطات تصفية في محافظة المثنى خلال ثلاثة عشر شهرا شملت محطة تصفية كل من الرميثة والوركاء والخضر لغرض تقييم نوعية مياه النهر (الخام) ومياه الشرب (المنتجة) ومقارنتها مع المواصفة القياسية العراقية للمياه وقد شملت المواصفات الفيزياوية دراسة عكورة المياه والتوصيلية الكهربائية فيه, اما المواصفات الكيميائي

This research deals with the ideas of Imam Muhammad bin Al-Waleed bin Khalaf bin Sulaiman bin Ayyub , Al -Qurashi, The Moroccan, The  Andalusian, Al-Maliki. He was  known as Abu Bakr Al-Tartoushey , where thesis deals  with the details of his personal life and as well as his scientific path  as well as  his works, and also covered the views of jurisprudence in the personal status and especially on the subject of divorce and inheritance,

In this study, investigations of structural properties of n-type porous silicon prepared by laser assisted-electrochemical etching were demonstrated. The Photo- electrochemical Etching technique, (PEC) was used to produce porous silicon for n-type with orientation of (111). X-ray diffraction studies showed distinct variations between the fresh silicon surface and the synthesized porous silicon surfaces. Atomic force microscopy (AFM) analysis was used to study the morphology of porous silicon layer. AFM results showed that root mean square (RMS) of roughness and the grain size of porous silicon decreased as etching current density increased. The chemical bonding and structure were investigated by using fourier transformation infrared spec

Background: The obesity epidemic is affecting worldwide health, increasing the risk of cardiovascular diseases such hypertension, diabetes, dyslipidemia, and nonalcoholic fatty liver disease. this gave an impetus to study the new variables Insulin-like peptide 5, Phosphodiesterase 9 and their relationship as a cause or effect factors

Objective: To validate any associations between Phosphodiesterase 9 (PDE9) and, Insulin-like peptide 5 (INSL5), specific factors and obesity, and to explore how they might integrate with other established agents to combat obesity and improve metabolism.

Subjects and Methods: The study was based analytical cross-sectio

Existing leachate models over–or underestimates leachate generation by up to three orders of magnitude. Practical experiments show that channeled flow in waste leads to rapid discharge of large leachate volumes and heterogeneous moisture distribution. In order to more accurately predict leachate generation, leachate models must be improved. To predict moisture movement through waste, the two–domain PREFLO, are tested. Experimental waste and leachate flow values are compared with model predictions. When calibrated with experimental parameters, the PREFLO provides estimates of breakthrough time. In the short term, field capacity has to be reduced to 0.12 and effective storage and hydraulic conductivity of the waste must be increased to

The current research reports the preparation and fabrication of the silver paste conductor which is employed as a soldering material for electro – optical components ohmic interconnections. The prepared paste possesses electrical characteristics identical to the ohmic connectors as its observable from resistance – temperature variation. Moreover, the I – V characteristics obeys Ohm’s law and this dependency was further confirmed by the nearly constant capacitance measurements with voltage and frequency. A noticeable improvement in electrical conductivity, compared to the pure silver paste sample, was noted for samples prepared by mixing predetermined weight ratios of brass and copper. Furthermore, stability of electrical resistan

 The aim of this study to improve the growth, production, and fruits quality of cucumber, Two experiments were carried out. firstly; a field experiment to produce cucumber by the soilless culture system. This experiment was to study effect of nutrients solution (A₁, A₂), growth media (C₁, C₂, C_3, and C₄), and methods of flowering management (B₁, B₂, B₃ and B₄). Second experiment was conducted to study the effect of storage methods on the yield of 32 field treatments combination (ABC), for a week in four cases of storage as follows: S₁ repr

Abstract

        The research to have a clear perceptions about the knowledge value added to assess the knowledge resources of the Iraqi private banks, depending on the value added methodology of the proposed defined (Housel & Bell, 2001), which assumes that the  knowledge value added come through synergetic relationship between knowledge resource and information technology, trying to the possibility of mainstream theory and its application in the Iraqi environment and interpretation of results, and on this basis was launched search of a research problem took root synergetic nature of the relationship between knowledge (human)  resource and

The electrical properties of pure NiO and NiO:Au Films which are
deposited on glass substrate with various dopant concentrations
(1wt.%, 2wt%, 3wt.% and 4wt.%) at room temperature 450 Co
annealing temperature will be presented. The results of the hall effect
showed that all the films were p-type. The Hall mobility decreases
while both carrier concentration and conductivity increases with the
increasing of annealing temperatures and doping percentage, Thus,
indicating the behavior of semiconductor, and also the D.C
conductivity from which the activation energy decrease with the
doping concentration increase and transport mechanism of the charge
carriers can be estimated.

Density Functional Theory at the generalized-gradient approximation level coupled with large unit cell method is used to simulate the electronic structure of (II-VI) zinc-blende cadmium sulfide nanocrystals that have dimensions 2-2.5 nm. The calculated properties include lattice constant, conduction and valence bands width, energy of the highest occupied orbital, energy of the lowest unoccupied orbital, energy gap, density of states etc. Results show that lattice constant and energy gap converge to definite values. However, highest occupied orbital, lowest unoccupied orbital fluctuates indefinitely depending on the shape of the nanocrystal.

In an attempt to disposal from nuclear waste which threats our health and environments. Therefore we have to find appropriate method to immobilize nuclear waste. So, in this research the nuclear waste (Strontium hydroxide) was immobilized by Carbon nanotubes (CNTs).  The Nd-YAG laser with wave length 1064 nm, energy 750 mJ and 100 pulses used to prepare CNTs. After that adding Sr(HO)₂ powder to the CNTs colloidal in calculated rate to get homogenous mixing of CNTs-Sr(OH)_2. The Sr(HO)₂ absorbs carbon dioxide from the air to form strontium carbonate so, the  new solution is CNTs-SrCO₃. To dry solution putting three drops from the new solution on the glass slides. To investigate the radi

This research was aimed to construct an integrative system which is capable of accurate determining and analyzing evapotranspiration rates in Iraq for long period , Since high evapotranspiration rates and extreme shortage in precipitation are the main causes of aridity, which considered principal reason for land degradation and land desertification eventually. FAO Penman-Monteith method was adopted because it's the international standard method. In this work meteorological readings of nine stations with comprehensive covering for Iraq's area were taken for every ten years in a long-term range (31 years). The daily evapotranspiration values had been calculated, then after the annual summation value determined for the years (1987,

الاحداث السياسية في العراق بعد 2003 وأثر الانتماء والوعي في التشكيل العراقي المعاصر

Chlopheniramine maleate ( CPM ) , is  one  of   the  H- receptor antagonist  ,  widely used  in allergic  diseases ,like skin rash  and  pruritis .CPM 3%w/w was successfully  loaded in  2%w/w  sodium alginate (SA)    as a gel    base ,  and  to be considered   as  a  selected  formula .It was found  that  the diffusion   of  CPM    through   the  skin  of  albino  rat   was     increased   as  the concentration  of  CPM  increased from 2 %w/w sodium alginate  ,  More

this research seeks to shed light on the study of the impact of Putinism on the Russian-Ukrainian war that broke out in early 2022, by studying the contents of the speeches of Russian President Vladimir Putin before the start of the war. This research uses the structural approach in analyzing the components of the Russian political regime. The research tools used in this research include case studies, content analysis of Russian speeches, and personal meetings of researchers and specialists in Russian affairs. It sums up a number of important conclusions, most notably are : 1) Putinism is a totalitarian regime that includes the political doctrine during the era of Russian President Vladimir Putin. 2) Duginism represents the totality of t

This study was conducted to evaluate the effects of nisin, potassium sorbate and sodium lactate and their interactions as preservatives in fat oxidation, some quality and microbial characteristics of chilled ground beef meat stored at 4C˚ for 0,4,8 and 12 days. The study included nine different treatments: T1 (control treatment without addition), T2 (nisin at a concentration of 150 mg/kg), T3 (potassium sorbate 0.075 g/kg), T4 (sodium lactate 3%), T5 (nisin 150 mg/kg + potassium sorbate 0.075 g/kg), T6 (nisin 150 mg/kg + sodium lactate 3%), T7 (Sodium Lactate 3% + Potassium Sorbate 0.075 g/kg), T8 (Nisin 150 mg/kg + Sodium Lactate 3% + Potassium Sorbate 0.075 g/kg) and T9 (Addition of Butylated hydroxyanisole(BHA 0.01%)). All tr

Received several formats historical kings of old Babylonian era carries connotations military as it chronicled the kings of this era Sunni rule work, was in the forefront of those formulas taken from weapons-grade events have the history of years of their rule, and the keenness of the Kings on the industry that weapon and because it is dedicated to the goddess is the weapon of God, and which pulls the Goddess encouragement and an support them in their wars, they think the Iraqis ancient gods be carrying weapons at the forefront of their armies to fight the enemy with them as well as the receipt of a lot of alliances

This book in our hands is a 'book in the science of rhymes' written by the linguistic and grammatical world 'Othman bin Jenni' 'T 392 AH', and included in it: the concept of rhyme, its characters, movements, and disadvantages, with mention of its ramifications, defining them by definition, clarification and martyrdom poetry, It is concise in size, but it is a book containing a full science in its content.
The study was divided into two parts, the first: the study, and included a study of the author and the author, I talked first about his life, such as his name and origin, and scientific status, and the words of scientists in it, and so on, and secondly: the name of the book, and his percentage, and the time of its composition, etc. I

The research aimed  to determine the overall quality standards through literature and specialists and overall quality experts , and to identifying the applied level by managers in some provinces of the central region . In order to achieve the objectives of the research , the researcher developed five scale ranging from grades ' ( 0-4 ) degree for the purpose of identifying the level of application of total quality standards for program planning by managers in the provinces of the central region , included (73) items distributed on (10) axes and ( 4) field (inputs , processes , outputs , feedback ) . The research was conducted on  a random sample of 50%  of Iraqi mi

This experiment conducted Using 12 primers related to ISSR technology in distinguishing among the 21 selective back to the three variety of watermelon they are each of the selective Crimson Sweet which code to W1, W2, W3 and W4 and the variety Sugar Baby which coded to SH1 ,SH2 ,SH3 ,SH4 ,SH5,SH6 and SH7 and the variety Charleston Gray which is coded to G1 ,G2,G3 ,G4 ,G5 ,G6 ,G7 ,G8, G9 and G10 . The results showed that the primers used gave 89 total bands were all of the polymorphism was 100%. Found that the primers 810, 840 and 864 were high ability of the way to give it the highest numbers of bands while the primers 808 and 834 of the ability of the few by giving them fewer bands. 9 primers able to give distinct bands for some

The  first chapter

The importance of research and the need for him

We have recently increased prevalence of behavioral problems rate, especially among young people, and this has become clear to all. In the light of social changes, political and economic and security conditions and technological advances enormous, especially in the means of communication such as the Internet and satellite television and mobile phone, resulted in the entry of some habits and Western values on our society which led to a vibration private values with low economic situation and the increasing youth unemployment and the resulting frustrations led to a situation of social chaos that we see now in th

لايمكن للفرد أن يعيش منعزلا عن الآخرين لأنه بحاجة إلى أن يتفاعل مع غيره لتسهيل مستلزمات معيشته ، لذا يعد الانتماء الاجتماعي احد الحاجات النفسية

الاجتماعية المهمة في حياة الفرد من خلال رغبة الفرد في أن ينتمي إلى الآخرين سواء كانوا أسرة أو أصدقاء أو مهنة أو وطن للوصول إلى الهدف الذي يريد أن يحققه و المتمثل في الوصول إلى حالة من الأمن النفسي للفرد و هي تبحث عن وسيلة إشباع من خلال العيش مع مجموع

It was found that Pkvtomyza horticola Goureau infested 36 plants belonging to 11 families of
dicotyledons. only two of which belong to Monocotyledons. Most of plants species are from
compositae and Cruciferae families.

In this work Laser wireless video communication system using intensity modualtion direct
detection IM/DD over a 1 km range between transmitter and receiver is experimentally investigated and
demonstrated. Beam expander and beam collimeter were implemented to collimete laser beam at the
transmitter and focus this beam at the receiver respectively. The results show that IM/DD communication
sysatem using laser diode is quite attractive for transmitting video signal. In this work signal to noise
ratio (S/N) higher than 20 dB is achieved in this work.

Thanks and gratefulness be to Allah , the most merciful , and prayers be on his messenger and our prophet mohammed and his descendants.The voices have great influence on the diversity of methods of complaints and implication in the Qur'anic expression through
their inspiration , forms and notes. They also have influence on performing semantic and psychological condition of the emitter . that is because of the connection between the complaints and human behavior and emotions , since it is considered as the outlet by which the human expresses his repressed desired and instincts . he resorted to it " when he is helpless physically and mentally i.e. he cannot reach his goals or satisfy his needs." Complaints come from deprivation , social

The aim of the present research is to study different protein fractions in sera of children and adolescent with  β –thalassemia major and minor and to compare the results with that of healthy control.One hundred fifty children and adolescents were enrolled in this study,including 50 patients with β- thalassemia major , 50 patients with  β- thalassemia minor as pathological control group and another apparently 50 healthy individuals as a control group. The age of all studied  groups ranged from (4-18)years.Total protein, albumin and immunoglobulins were estimated in sera of all subjects.  A Significant  decrease  was  found  in  the  total  protein and  albumin&nb