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Article
Maxillary Arch Dimensional Changes in the Extraction and Non Extraction Orthodontic Treatment

Author: Nada M Al–Sayagh
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2008 Volume: 8 Issue: 1 Pages: 26-37
Publisher: Mosul University جامعة الموصل

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Abstract

Aims:To investigate whether extraction status and gender had any significant influence on the maxillary
arch dimensions. Materials and Methods: A sample of 40 orthodontic patients (20 extraction and
20 non extraction) were included in this study. Males and females were evenly represented in both
groups. All patients were treated with fixed edgewise appliances. Dental casts were taken before and
after final orthodontic treatment, fifteen maxillary arch parameters were evaluated at pre – and post –
treatment stage and included; dental arch width at the canine, 1st premolar, 2nd premolar, 1st molar (at
mesiobuccal and distobuccal cusp tips), arch depth at canine and 1st molar, arch lengths (incisal canine
length, canine molar length and incisal molar length ), and arch perimeter. A paired sample t– test was
used to evaluate the treatment changes in the extraction and non extraction groups and also to compare
between males and females before treatment and after treatment. Results: Generally, in both genders,
most pretreatment arch dimensions were not significantly different between extraction and non extraction
groups, while after treatment the extraction treatment resulted in the reduction in the arch perimeters,
arch depth, and arch length. Where as the non extraction group showed a significant increase in
most maxillary arch dimensions. In addition both the extraction and non extraction treatment did not
cause narrowing of the dental arch at the canine region. The direction of post treatment changes were
similar in male and female subjects. However, the magnitude of the post treatment changes in some
parameters differed significantly between females and males particularly in the non extraction group.
Conclusions: the extraction and non extraction groups showed similar trend in some maxillary dimensions
and different in other dimensions, thus it was concluded that the kind of treatment may affect the
maxillary arch dimensions. In addition the non extraction group had a larger number of significant
gender differences between females and males than the extraction group


Article
Extraction of Chlorophyll from Alfalfa Plant
أستخلاص الكلوروفيل من نبات الجت

Authors: Ali Khalid Khudair Al-Jomaily خالد خضير --- Ahmed Jawad احمد جواد علي --- Isam Kamal عصام كامل
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2006 Volume: 2 Issue: 1 Pages: 85-97
Publisher: Baghdad University جامعة بغداد

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Abstract

The extraction process of chlorophyll from dehydrated and pulverized alfalfa plant were studied by percolation method. Two solvent systems were used for the extraction namely; Ethanol-water and Hexane-Toluene systems . The effect of circulation rate, solvent concentration, and solvent volume to solid weight ratio were studied. In both ethanol water, and Hexane-Toluene systems it appears that solvent concentration is the most effective variable.

تم في هذا البحث دراسة عملية أستخلاص الكلوروفيل من الجت المجفف والمطحون بطريقة التغلغل. تم أستخدام نظامين من المذيبات للأستخلاص وهي منظومة أيثانول-ماء ومنظومة هكسان-تولوين . تم دراسة تأثير معدل التدوير، تركيز المذيب و نسبة حجم المذيب الى وزن المادة الصلبة المستخدمة . في كلا المنظومتين تم التوصل الى أن تركيز المذيب هو العنصر الأكثر تأثيرا.

Keywords

Chlorophyll --- Extraction --- Percolation --- alfalfa


Article
Alpha-Alumina Extraction from AI-Ga’ara Bauxite

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Abstract

The bauxite produced from Al-Ga ‘ara area in Al-Enbar containing 50.4 W percentages A1 was used for a a! urn/na production.For a-alumina product ion bauxite was mixed with calcium carbonate in a ratio 1.3 and the mixture was burned at temperature range 1150- cooled to 500°C; crushed and ground. The powder produced treated then with 6% sodium carbonate solution using different temperature (60-100°C) for fifteen minutes. After filtration, the produced sodium alurninate solution was reacted with 2% of calcium hydroxide at 98 for thirty minutes. The filtrate was carbonated with pur(f led CO gas at 70°C for different times (30- and different flow rates (20-80 cm’/min). Alumina was precipitated as hydrate, then washed with water, dried at 110°C, and calcined at 1200°C. The produced a AL was ident?fied by X-ray diffraction.


Article
Extraction and Characterization of A Chromosomal Stain From Black Mulberry (Morus Nigra)
استخلاص وتوصيف صبغة كروموسومية من التوت الأسود

Authors: Mukaram Shikara --- Hiba Muneer Al-Khafagi --- Wasnaa Hatif Mohammed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2010 Volume: 28 Issue: 7 Pages: 1432-1439
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

A dark-blue chromosomal stain from Black Mulberry (Morus nigra) wasextracted using organic solvents including dioxane, n-hexane, petroleum ether andacetone. This extracted stain stained chromosomes satisfactory. In order toascertain purity of the extracted stain, it was compared spectrophotometery withthree commercial standards stains; they are Azur II Eosin, Giemsa’s andMethylene blue Stains using a 200-900nm Spectrophotometric scan at threedifferent concentrations (25, 50 and 100mg/ml).It was found that the second peaks produced by Azur II eosin and Giemsastain (as well as the single peak produces by Methylene blue) occupied the samearea occupied by the second peak of the extracted stain, which agree to somedegree of similarity. The extracted method proved to be an appropriate analyticaltechnique with hope that further trials can be carrying out to simplify theextracting of the stain in future researches and make it less expensive.

تم استخلاص صبغة كروموسومية زرقاء قاتمة من التوت الأسود من خلال استخداممذيبات عضوية مثل الديوكسان والهكسان وأيثر البترول والاسيتون، واستطاعت هذه الصبغةالمستخلصة صبغ الكروموسومات بطريقة مرضية، وتم تقييم الصبغة طيفياً بالمقارنة مع ثلاثةأيوسين، وصبغة كيمزا، وصبغة مثيلين بلو في II– صبغات تجارية قياسية أخرى هي أزور900 نانومتر، - 100 ملغم/مل) بإستخدام جهاز المطياف ما بين 200 ،50 ، عدة تراكيز ( 25أيوسين، وصبغة كيمزا ( فضلاً عن القمة II– ولقد وجد أن القمة الثانية الناتجة من أزورالوحيدة في صبغة مثيلين بلو) تحتل المساحة نفسها التي تحتلها القمة الثانية من الصبغةالمستخلصة ، مما يجعل نوعاً من التشابه بين الصبغات، ويمكن عد طريقة الاستخلاصطريقة تقنية تحليلية ، مع الأمل في امكانية اختصار هذه الطريقة وتبسيطها في المستقبلوجعلها أقل كلفة في التجارب القادمة.


Article
Extraction and Titration of Leukotoxins from Fusobacterium necrophorum Isolates Recovered from Bovine Liver Abscesses in Sulaimaniyah Region
استخلاص ومعايرة لوكوتوكسينات جراثيم Fusobacterium necrophorum المعزولة من خراجات كبد الابقار في منطقة السليمانية

Authors: Suha Ali Hussein سهى علي حسين --- Essam F. Al-Jumaily عصام فاضل الجميلي
Journal: The Iraqi Journal of Veterinary Medicine المجلة الطبية البيطرية العراقية ISSN: 16095693 Year: 2012 Volume: 36 Issue: spcial issue(2) Pages: 110-114
Publisher: Baghdad University جامعة بغداد

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Abstract

This study was conducted to extract and titrate the leukotoxin of Fusobacterium necrophorum isolates recovered from57 abscesses found in 42 livers of slaughtered cattle in Sulaimaniyah region. The culture supernatants of these isolates were subjected to the tetrazolium dye reduction test which revealed that the leukotoxin titer values of 34 F. necrophorum subsp. necrophorum isolates ranged from 128 to 1024 (with a leukotoxin titer mean of 516±46), whereas the leukotoxin titer values of the 11 F. necrophorum subsp. funduliforme isolates ranged from 0 to 128 (with a leukotoxin titer mean of 73±12).

صممـت هـذه الـدراسـة لاستخلاص ومعايرة اللوكوتوكسينات لعزلات جراثيم F. necrophorum عزلت من 57 خراج وجدت في أكبـاد 42 بقرة ذبحت في محافظة السليمانية. اخضعت الرواشح الزرعية لهذه العزلات الى فحص اختزال صبغة التترازوليوم والذي اظهر أن قيم معيار اللوكوتوكسين التي كانت تتراوح بين 128 الى 1024 (بمعدل معيار لوكوتوكسين (46 ±516 لـ 34 عزلة من جراثيم F. necrophorum subsp. necrophorum بينما كانت تتراوح بين 0 الى 128 (بمعدل معيار لوكوتوكسين (12 ±73 لـ 11 عزلة من جراثيم F. necrophorum subsp. Funduliform.


Article
Impact of Suturing Techniques on the Periodontal Health Status of Mandibular Second Molar After Extraction of Fully Impacted Third Molars

Author: Jabbar J. kareem جبار جاسم كريم
Journal: Tikrit Journal for Dental Sciences مجلة تكريت لعلوم طب الاسنان ISSN: 20731213 Year: 2013 Volume: 2 Issue: 2 Pages: 154-160
Publisher: Tikrit University جامعة تكريت

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Abstract

Mandibular third molars are appeared to be the most common congenitally impacted teeth the fact that may cause many problems in different fields of dentistry. surgical removal of the impacted tooth seems to be the only solution for these problems. An important complication to address is the risk of developing periodontal breakdown ( loss of attachment) and deep periodontal pocket on the distal aspect of the adjacent mandibular second molar after surgical removal of third molar. The aim of the present study is to evaluate and compare the effect of 4 suturing techniques: (Simple loop , Figure 8 suture, Anchor suture and Closed anchor suture) on the periodontal health status on the distal aspect of the adjacent mandibular second molar after surgical removal of lower impacted third molar.Forty patients having fully impacted mandibular third molars were enrolled in this study and divided to 4 groups (Group A: Simple loop , Group B: Figure 8 suture, Group C: Anchor suture and Group D: Closed anchor suture), each group consisted of 10 patients. Surgical extraction of impacted third molars were carried out for them. Probing pocket depth (PPD) and clinical attachment level (CAL) were recorded preoperatively and 6 months after surgery. On 6 months after surgery the mean values of PPD and CAL were significantly increased on the distal surface of the adjacent mandibular second molar in simple loop & figure 8 techniques. On the other hand, no significant difference has been noticed between anchor & closed anchor techniques in comparison with preoperative values. After 6-months, PPD and CAL values of were significantly higher in the simple loop and figure 8 techniques compared to anchor and closed anchor techniques. The present study concluded that closed anchor suture & anchor suture techniques are preferable to close the flaps in surgical removal of impacted mandibular third molars to maintain a good health status on the distal side of the adjacent mandibular second molar.

Keywords

suture --- extraction --- third molars.


Article
Extraction of Platinum from Spent Catalyst as pt/Al2O3 in aqua regia

Authors: Ayad Dari Jaafar --- Wafaa Abdulkadhim Zghair --- Shahrazad Rifat Raouf
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2019 Volume: 12 Issue: 3 Pages: 8-14
Publisher: Diyala University جامعة ديالى

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Abstract

Spent catalyst from Biji Refining contained valuable metals such as platin. This study focus on platinum extraction in aqua regia solution. Three factors effecting on the process were study including dissolution temperature, normality of aqua regia andagitation speed. The ideal conditions for process give 0.22 gm platinum extraction in dissolution temperature 80 C0, normality for aqua regia was 6 and 120 rpm mixing speed for solution.

Keywords

Extraction --- Platinum --- catalyst


Article
The Extraction of Alumina from Kaolin

Authors: Alaa H. Ali --- Mohammed H. AL-Taie
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2019 Volume: 37 Issue: 4part (A) Engineering Pages: 133-139
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Alumina has wide industrial and technological applications thatcan be extracted from different locations, different methods and materials.Kaolin from Iraq Alduikhla astrologer has used as a raw material source foralumina production. The alumina concentration in the Iraqi kaolin is morethan 34% which considered as a good replacement for bauxite rack. Crushingandground is the first process to reduce the kaolin particle size to the micronlevel which increases the surface area of kaolin.The kaolin is heat treated at different temperatures (600, 650, 700 and 750) ̊Cfor 2 hours to remove some of ithe mpurity like organic materials and crystalwater before acid treatment. A different concentration of hydrochloric acid(pH) (0.45, 0.5, 0.55, 0.6 and 0.65) has used for extraction of alumina fromkaolin. The reaction between the hydrochloric acid and kaolin has studied atdifferent temperature (30, 60 and 90) ̊C. The extraction of alumina hasdecreased with increase t inhe reaction temperature. Finally t,,he aluminaextraction by this method has characterized using XRD and XRF toinvestigation the crystal structure and the amount of impurities presentedthere. The final extracted alumina h isaving cubic crystal structure (γalumina) with purity above 95%.

Keywords

kaolin --- extraction --- Alumina


Article
Extraction and Estimation of β-carotene Pigment from Some Species of The Genus Rhodotorula and Study The Ability to Increas Their Production By Mutagenesis
استخلاص وتقدير صبغة البيتا- كاروتين من بعض انواع جنس اﻟـ Rhodotorula المعزولة ودراسة امكانية زيادة انتاجها بالتطفير

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Abstract

Beta-carotene pigment was extracted from 6 strains collected from different sources related to some species of the genus Rhodotorula sp. The maximum productivity was in the strain Rhodotorula mucilaginosa BA61 with amount 10.25 gm/l. The minimum productivity was from the strain R. minuta BA78 with amount 5.39 gm/l. The effects of the chemical mutagen (MNNG) and the physical mutagen (UVC) on the viability of the strains was studied. The results revealed that the chemical mutagen (MNNG) with the concentration 0.2 mg/ml has the clear effect on the viability of the strains , which killing percentage reached to 65.91% in the strain R. minuta BA78. Results of the study of mutagenesis with UVC showed that increase in killing percentage for all the studied strains with the increase of radiation period. The maximum effect was with the strain R. minuta BA78, the killing percentage reach to 100% with the radiation period 20 minute. The companying effects of chemical with the concentration 0.2 mg/ml and physical mutagen was studied. The result showed increase in killing percentage for the studied strains which reach to 100% with the radiation period 15 and 20 minute for the strain R. minuta BA78. The maximum effect on Beta- carotene production was on the strain R. mucilaginosa BA61, the productivity reach to maximum with amount 11. 45gm/l.

تم استخلاص صبغة البيتا- كاروتين من6 عزلات جمعت من مصادر نباتية مختلفة تضمنت ثمار الفاكهة وأوراقها وتربتها تعود الى بعض انواع جنس Rhodotorula sp.، إذ بلغت اقصى انتاجية من العزلة R. mucilaginosa BA61 وبمقدار 10.25 غم/لتر، فيما كانت العزلة R. minuta BA78 اقل انتاجا وبمقدار 5.39 غم/لتر. ودراسة التأثيرات التطفيرية لكل من المطفر الكيميائي N-methyl-Ń-nitro-N-nitrosoguanidine (MNNG) والمطفر الفيزيائي Short Wave Ultraviolet (UVC) على حيوية العزلات وبينت النتائج ان المطفر الكيميائي (MNNG) بتركيز 0.2 ملغم/مل تأثير واضح في حيوية العزلات اذ وصلت نسبة شدة القتل اقصاها 65.91% في العزلة R. minuta BA78. في حين اظهر التطفير باﻟـ UVC زيادة نسبة شدة القتل لجميع العزلات مع زيادة التعرض ﻟﻟـ UVC. وكانت العزلة R. minuta BA78 اكثر تأثراً، إذ بلغت نسبة شدة القتل 100% عند مدة تشعيع 20 دقيقة. تم دراسة تأثير الدمج بين المطفر الكيميائي بتركيز 0.2 ملغم/مل والفيزيائي. اظهرت النتائج زيادة شدة قتل العزلات المدروسة قيد الدراسة حيث بلغت 100% عند مدة تشعيع 15 و 20 دقيقة للعزلة R. minuta BA78. التأثير الاكبر في انتاجية البيتا- كاروتين عند الدمج بين المطفر الكيميائي والفيزيائي كان على العزلة R. mucilaginosa BA61، إذ بلغت الانتاجية اقصاها وبمقدار11.45 غم/لتر.


Article
Offline vs. Online Digital Forensics of Cloud-based Services

Authors: Nidaa F. Hassan --- Haider M. Jaber
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2017 Volume: 20 Issue: 4 Pages: 117-124
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Digital forensics has become important due to the daily use of digital devices in our life, which may lead to evidence that can be useful to law enforcement in legal cases. When using cloud services, a lot of artifacts that might be useful for investigations are stored in the cloud which means that the extraction must be from cloud computers systems. So, the legacy forensics tools may not be usable or less effective due to the geographically distribution of data and legal issues among other issues. The challenges of the cloud digital forensics are discussed in this paper. Also, this paper shows the types of extracting data from cloud services that are offline and online extraction. The offline extraction is concerned with extracting data from a local device that used to access cloud services. While online data extraction is concerned with remote extraction of data from cloud services. A comparison between such two types are demonstrated from many ways according to the result of recent papers to show the situations that each type is useful in.

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