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Article
Design of a PC-Based Command and Control System Using Alpha-Beta-Gamma Digital Tracking Filter
تصميم منظومة قيادة وسيطرة بأعتماد الحاسبة الشخصية وأستخدام مرشح التتبع الرقمي الفا-بيتا-كاما

Author: Duraid Fiz’a Mohammad دريد فزع محمد
Journal: AL Rafdain Engineering Journal مجلة هندسة الرافدين ISSN: 18130526 Year: 2012 Volume: 20 Issue: 3 Pages: 92-102
Publisher: Mosul University جامعة الموصل

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Abstract

AbstractIn this paper, a software model for a Command and Control system is implemented on personal computer. This model can also be used for navigation, or Air Traffic Control (ATC) systems. The hardware required for implementation of this system is also described in this paper. The system assumed to have a fixed position detection source such as the surface search radar. The principle of Track-While-Scan (TWS) that combines the automatic detection of targets and the automatic multi target tracking is used.The Simplified Alpha-Beta-Gamma (--) digital filter is used to perform the algorithm of the automatic tracking. The model main program and all necessary routines are written in C++ language. Successful tests for the implementation of this system are achieved.Keywords: Command and Control, Track-While-Scan, target, Alpha-Beta-Gamma filter, navigation, ATC

الخلاصة تم في هذا البحث تصميم وفحص عمل أنموذج برمجي لمنظومة قيادة وسسيطرة باستخدام الحاسبة الشخصية. وهذا النموذج يمكن تطبيقه ايضا" لمنظومات الملاحة أو السيطرة الجوية. كذلك تم وصف المتطلبات المادية لتنقيذ مثل هكذا منظومة. تم تصميم هذه المنظومة لتعمل على كشف الأهداف بأستخدام الرادار الأرضي الثابت ومبدأ التتبع خلال عملية المسح والذي يجمع بين مبدأ الكشف والمتابعة الطوعيان لأكثر من هدف في آن واحد.تم في هذا البحث استخدام المرشح الرقمي الفا-بيتا-كاما المبسط لتنفيذ خوارزميات التتبع الطوعي، واعتماد لغة C++ في بناء هذة المنظومة، علما" انه قد تم اختبار عمل هذه المنظومة بنجاح.


Article
THIRTY TWO ALGAE NEW RECORDS REPORTED IN PONDS AT GWER SUB-DISTRICT, ERBIL -KURDISTAN REGION, IRAQ
تسجيل اثنان وثلاثون نوعا جديدا" من الطحالب في برك قصبة الكوير في محافظة اربيل/ اقليم كوردستان العراق

Authors: Farhad Hasan Aziz فرهاد حسن عزيز --- Balqis Haji Rasoul بلقيس حاجي رسول
Journal: Bulletin of the Iraq Natural History Museum مجلة متحف التاريخ الطبيعي العراقي ISSN: Print ISSN: 10178678, Online ISSN: 23119799 Year: 2016 Volume: 14 Issue: 1 Pages: 27-42
Publisher: Baghdad University جامعة بغداد

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Abstract

One of the main types of microorganisms in aquatic ecosystems is algae including phytoplanktons which are microscopic photosynthetic organisms some of them extremely resistance to unsuitable environmental condition and widely distributed such as Cyanophyta, Algae are living as epipelic, epilithic, epiphytic and free-floating in open or surface waters, they are found in unicellular, colonial, coenobic and filamentous forms (Banyasz, 2011). In Iraqi Kurdistan Region a phycolimnological study were carried out from 1978 to 2012 a total of (1341) species were recorded in algal check list in Kurdistan ( Aziz, 2011). While the first paper was that of Maulood and Hinton (1978), and the last one more recently have done (Abdulwahid, 2012; Aziz, 2014 and Aziz et al., 2014). The aim of the present work is algal study in parallel with same physical and chemical water parameters of such water ponds to increasing the knowledge about algal distribution and abundance in Iraqi Kurdistan region.

تم اجراء هذا البحث اعتبارا من شهر التشرين الثاني التشرين الاول 2012 في ستة برك مائية صغيرة شبه مالحة من قصبة الكوير وهو اول بحث يجري في المنطقة. حيث تم تسجيل اثنان و ثلاثون (32) نوعا مع جنسين من الطحالب لاول مرة في العراق. وان اغلبية الطحالب الجديدة المسجلة تعود الى الطحالب الخضراء المزرقة واليوغلينة والكريباتية و الصفراء والخضراء. فيما يخص الدايتومات فأنها تعود الى الطحالب غير الدائرية.


Article
Study of ELISA and antibiotic sensitivity test for Salmonella enteritidis as experimental infection in mice
دراسة اختبار الاليزا وفحص الحساسية الدوائية للسالمونيلا المعوية كأصابة تجريبية في الفئران

Authors: Haithm I. Baqir هيثم عزت باقر --- Mohammed K. Thamir محمد كاظم ثامر --- Khalid H. Znad خليل حسن زناد --- Laheeb J. Majeed لهيب جمال مجيد
Journal: Baghdad Science Journal مجلة بغداد للعلوم ISSN: 20788665 24117986 Year: 2009 Volume: 6 Issue: 1 Pages: 114-122
Publisher: Baghdad University جامعة بغداد

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Abstract

Salmonella enteritidis one of more important as epidemiological bacteria between other salmonella types. It is very important pathologically that cause food poising and gastrointestinal tract infections. This study includes some of immunological changes that appear by ELISA test and antibiotic sensitivity test against these bacteria in mice. ELISA test results appears high immunological response happen after 3 days of inoculation, mean titration readings beginning 0.198 and the maximum mean titration after 15 days of inoculation 1.538 and begin to decrease after this time slowly to remain about 0.297 after 40 days of inoculation. An antibiotics sensitivity test result appears, this bacteria sensitive to Chloramphenicol, Ceftriaxone, Ciprofloxacin and Cotrimaxazol. Resistance to Neomycin, Streptomycin and Rifampicin, while intermediate against Ampicilin and Amoxicillin. Another test we use Vitek system to know bacterial sensitivity against to more another types of antibiotics and to confirm between some of them.

جرثومة Salmonella enteritidis واحدة من أهم الجراثيم الوبائية من بين أنواع السالمونيلا الأخرى و مهمة جدا" من الناحية المرضية لأنها تسبب التسمم الغذائي وإصابات القناة المعدية المعوية. وهذا البحث تضمن دراسة بعض التغيرات والاستجابة المناعية للفئران بعد حقنها بهذه الجرثومة والتي تم قياسها باختبار الأليزا كما وتم فحص الحساسية لبعض من المضادات الحياتية ضد هذه الجرثومة. وأظهرت نتائج اختبار الأليزا حدوث استجابة مناعية واضحة بعد 3 أيام من الحقن ومعدل القراءات 0٫198 وأعلى معدل للقراءات كان بعد 15 يوم من الحقن وكان 1٫538 وهذا المعدل بدأ بالنقصان بعد هذا الوقت وبشكل بطيء ليكون حوالي 0٫297 بعد 40 يوم من الحقن. كما وأظهرت نتائج فحص الحساسية للمضادات الحياتية بأن هذه الجرثومة حساسة إلى كل من كلورمفنيكول وسفترياكسون وسبايروفلوكساسين وكوتريماكسازول. وكانت مقاومة إلى كل من نيومايسين وستربتومايسبن وريفامبسين. بينما كانت متوسطة الحساسية لكل من امبسيلين واموكسيسيلين. ألاختبار الآخر تم استخدام نظام فايتك لمعرفة حساسية الجرثومة تجاه أنواع أخرى من المضادات الحياتية وللمقارنة مع بعضها.


Article
Traumatize anterior teeth, dento-facial anomalies among deaf person in the middle region of Iraq

Authors: .Lamia Abdul Khaliq Alazawi BDS, M.Sc., Ph. D د. لميس عبد الخالق --- Nada Jafer B.D.S, M.Sc د. ندى جعفر
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2005 Volume: 2 Issue: 2 Pages: 213-217
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This study was designed to determine the type and prevalence of trumatic dentalinjuries, aenterio—posterior molar relation among (519) deaf persons and (532) schoolstudents at 5-16 years of age in the middle region of Iraq. The study showed that theprevalence of traumatic dental injuries were 6.94% for deaf persons and 5.83% forschools students. Males showed a higher percentage of traumatized teeth than females ininstitutions and school students. Enamel dentine fracture without pulp exposure was themost predominant type among deaf persons while simple enamel fracture was the mostpredominant among schools students. The majority of deaf persons and schools studentsdemonstrated normal type of occlusion 57.42%, 55.64% respectively. Deaf personshowed significantly with percentage of 4.62% mesial full cusp deviation from normal.antero·postrior molar relation compared to school students 2.07%


Article
The effect of aging on tensile strength of two maxillofacial silicone materials before and after pigmentation

Authors: Afeiaa Lateef Jassim --- Mohammed Abdul Hussain
Journal: Journal of Oral and Dental Research مجلة طب الفم والاسنان ISSN: 23106417 Year: 2019 Volume: 6 Issue: 1 Pages: 40-50
Publisher: Iraqi Association for Oral Research الجمعية العراقية لبحوث طب الفم

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Abstract

Background The approximate life span of a silicone maxillofacial prosthesis is as short as after 4-14 months of usage, then a new prosthesis should be fabricated. But now many researchers have been directed toward improvement of properties silicone elastomeric materials. The objective of this study is to evaluate the effect of aging on tensile strength of two types of silicone materials used in the maxillofacial prostheses (VST-30 and VST-06) after artificial weathering for 100, 200 and 300 hours, and then comparing between the two selected materials in terms of selected artificial weatheringperiods. Material and methods a sample of 160 specimens were prepared anddivided into two main groups according to the types of elastomeric silicone (VST-30 and VST-06). Then each group subdivided into 8 divisions, (n=10). Two groups, one for clear and one pigmented as control groups before experimental weathering .While the experimental groups divided into clear and pigmented groups treated with artificialweathering for 100, 200 and 300 h. Results after different weathering cycles theresults show that there was no significant difference in the tensile strength for VST-30 silicone material pigment before and after weathering. While there was a highly significantdifference in the tensile strength for VST-06 pigmented silicone before and after weathering. Both VST-30 and VST-06 non-pigmented groups showed a highly significant change in the tensile strength after different weathering cycles. Conclusionsthe superior type for mechanical properties after difference cycles weathering was for VST-30 and incorporation of rayon flocking prevents the silicone materials from rapid degradation under artificial weathering and this may lead to increase in the service life of silicone prosthesis.

Keywords

Background The approximate life span of a silicone maxillofacial prosthesis is as short as after 4-14 months of usage --- then a new prosthesis should be fabricated. But now many researchers have been directed toward improvement of properties silicone elastomeric materials. The objective of this study is to evaluate the effect of aging on tensile strength of two types of silicone materials used in the maxillofacial prostheses --- VST-30 and VST-06 after artificial weathering for 100 --- 200 and 300 hours --- and then comparing between the two selected materials in terms of selected artificial weathering periods. Material and methods a sample of 160 specimens were prepared and divided into two main groups according to the types of elastomeric silicone --- VST-30 and VST-06. Then each group subdivided into 8 divisions --- n=10. Two groups --- one for clear and one pigmented as control groups before experimental weathering .While the experimental groups divided into clear and pigmented groups treated with artificial weathering for 100 --- 200 and 300 h. Results after different weathering cycles the results show that there was no significant difference in the tensile strength for VST-30 silicone material pigment before and after weathering. While there was a highly significant difference in the tensile strength for VST-06 pigmented silicone before and after weathering. Both VST-30 and VST-06 non-pigmented groups showed a highly significant change in the tensile strength after different weathering cycles. Conclusions the superior type for mechanical properties after difference cycles weathering was for VST-30 and incorporation of rayon flocking prevents the silicone materials from rapid degradation under artificial weathering and this may lead to increase in the service life of silicone prosthesis.


Article
ON-LINE HANDWRITTEN ARABIC CHARACTER RECOGNITION BASED ON GENETIC ALGORITHM
تشخیص الاحرف العربیة بالكتابة المباشرة إعتمادا على الخوارزمیة الجینیة

Author: Haithem Abd Al-RaheemTaha هیثم عبد الرحیم طه
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2012 Volume: 5 Issue: 1 Pages: 79-87
Publisher: Diyala University جامعة ديالى

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Abstract

ABSTRACT:- On-line Arabic handwritten character recognition is one of the most challenging problems in pattern recognition field. By now, printed Arabic character recognition and on-line Arabic handwritten recognition has been gradually practical, while offline Arabic handwritten character recognition is still considered as "The hardest problem to conquer" in this field due to its own complexity. Recently, it becomes a hot topic with the release of database, which is the first text-level database and is concerned about the area of realistic Arabic handwritten character recognition. At the realistic Arabic handwritten text recognition and explore two aspects of the problem. Firstly, a system based on segmentation-recognition integrated framework wasdeveloped for Arabic handwriting recognition. Secondly, the parameters of embedded classifier initialed at character-level training were discriminatively re-trained at string level. The segmentation-recognition integrated framework runs as follows: the written character is first over-segmented into primitive segments, and then the consecutive segments are combined into candidate patterns. The embedded classifier is used to classify all the candidate patterns in segmentation lattice. According to Genetic Algorithm (Crossover, mutation, and population), the system outputs the optimal path in segmentation-recognition lattice, which is the final recognition result. The embedded classifier is first trained at character level on isolated character and then the parameters are updated at string level on string samples.Keywords: Arabic Character, handwritten recognition, Genetic Algorithm.

الخلاصةان تشخیص كتابة الاحرف العربیة في الزمن الحقیقي یعتبر من اكثر التحدیات في مجال التعرف على الاشكال. وهناك دراسات حول التشخیص للاحرف العربیة ما زالت تعتبر من المشاكل المعقده في هذا المجال. الهدف من البحث هو التشخیص للاحرف العربیة بخط الید واستكشاف الجوانب الثلاثة في بحثنا، اولا ان النظامیقوم على ت شخیص بشكل مجزء ضمن الاطار المتكامل للتعرف على خط الید باللغة العربیة، ثانیا،ً ان البارامیترات الخاصة بالتصنیف لعملیة البدء عند مستوى التعلیم لحالة الحرف المخطوط یدویا تقوم بتمییز مستوى الحرف عند مستوىالتدریب.تشخیص المقاطع في اللوحة المهیئة لكتابة الحرف تكون حسب التالي: كتابة الحر ف المقاطع الاولیة، وبعد ذلك یتم جمع المقاطع على التوالي في نموذج ترشیحي.و ثم یتم تصنیف جمیع النماذج في شبكه عبار ة عن مقاطع. وبالاستناد الى الخوارزمیة الجینیة (التبادل، الطفرات، والتوزیع)، فان الاخراج یكون ناتج عن المسار الامثل في للنموذج الترشیحي وهي التي تعتبر الناتج النهائي. یتم تدریب المصنف الأول على مستوى جزءا لا یتجزأ وذلك بعزل حرف على حرف ومن ثم یتم تحدیث المعلمات على مستوى السلسلة على عینات تم حفظها في قاعدة بیانات لمقارنتها مستقبلا بالادخال الجدید.

Keywords

ABSTRACT:- On-line Arabic handwritten character recognition is one of the most challenging problems in pattern recognition field. By now --- printed Arabic character recognition and on-line Arabic handwritten recognition has been gradually practical --- while offline Arabic handwritten character recognition is still considered as "The hardest problem to conquer" in this field due to its own complexity. Recently --- it becomes a hot topic with the release of database --- which is the first text-level database and is concerned about the area of realistic Arabic handwritten character recognition. At the realistic Arabic handwritten text recognition and explore two aspects of the problem. Firstly --- a system based on segmentation-recognition integrated framework was developed for Arabic handwriting recognition. Secondly --- the parameters of embedded classifier initialed at character-level training were discriminatively re-trained at string level. The segmentation-recognition integrated framework runs as follows: the written character is first over-segmented into primitive segments --- and then the consecutive segments are combined into candidate patterns. The embedded classifier is used to classify all the candidate patterns in segmentation lattice. According to Genetic Algorithm --- Crossover --- mutation --- and population --- the system outputs the optimal path in segmentation-recognition lattice --- which is the final recognition result. The embedded classifier is first trained at character level on isolated character and then the parameters are updated at string level on string samples. Keywords: Arabic Character --- handwritten recognition --- Genetic Algorithm.


Article
Immunological study of patients with asthma

Author: Alaa J.H. and Thanaa A.M
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2013 Volume: 21 Issue: 7 Pages: 2400-2407
Publisher: Babylon University جامعة بابل

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Abstract

An immunological study were performed to estimation the concentrations of immunoglobulin IgE , IL-4 , IL-13 and PGE2 by ELISA , calculate the total and differential WBCs counts of patients with asthma , as well as the relationship between this disease and gender in Babylon province . The study reveals that the IgE and IL – 4 levels were significantly increased (p<0.05) in patients (second and third age categories ) compared with healthy subject . The results illustrated that the patients show a significant elevation in IL – 13 levels in first (p<0.01) , second (p<0.05) and third (p<0.01) age categories respectively compared with control group ;furthermore, the study revealed that the concentration of prostaglandin –E2 (PGE2) show highly significant elevation (p<0.05) in patients compared with healthy individuals . The results displays that there is no significant differences (p<0.05) in total WBCs count between patients and control group , and the same results was in means of neutrophils , lymphocytes and monocytes ; while there were significantly increased (p<0.05) in eosinophils (first and second groups ) and basophils (all groups) in patients compared with healthy subject ,furthermore, the results reveals increased ratio of disease in females compared with males .

أعدت دراسة مناعية لتقدير تراكيز الكلوبيولين المناعي IgE )E-) ، IL-4 ، IL-13 والموثين E2-(PGE2) بطريقة الأمتزاز المناعي المرتبط بالأنزيم (ELISA) ، حساب العد الكلي و التفريقي لخلايا الدم البيض لمرضى الربو بالأضافة الى علاقة المرض بالجنس في محافظة بابل . أظهرت نتائج الدراسة وجود أرتفاع معنوي (p<0.05) في مستويات الضد IgE و الأنترليوكين – 4 للمرضى في الفئتين العمريتين الثانية و الثالثة مقارنة" مع مجموعة الأفراد الأصحاء . أوضحت نتائج الدراسة في التحري عن الأنترليوكين – 13 وجود أرتفاع معنوي في المرضى للفئات العمرية الأولى (p<0.01) و الثانية (p<0.05) والثالثة (p<0.01 ) على التوالي مقارنة " مع مجموعة السيطرة ، بالأضافة الى ذلك بينت النتائج وجود أرتفاع معنوي كبير (p<0.05 ) في تركيز الموثين – E2 لمرضى الربو مقارنة" مع الأفراد الأصحاء . أوضحت النتائج عدم وجود فروق معنوية (p<0.05 ) في العد الكلي لخلايا الدم البيض بين المرضى ومجموعة السيطرة ، ولوحظت ذات النتائج في معدلات العدلات ، الخلايا اللمفية والخلايا وحيدة النواة الدموية ، في حين كانت هنالك زيادة معنوية (p<0.05) في الحمضات (الفئة العمرية الأولى والثالثة) والقعدات (كل المجاميع ) فى المرضى مقارنة" مع الأفراد الأصحاء ، بالأضافة الى ذلك أظهرت النتائج زيادة نسبة المرض في الأناث مقارنة" مع الذكور .


Article
Synthesis and Anti-Microbial Study of Polycyclicacetal Metal Complexes of (Hg, Ni, Co and Mn) Derived From PVA & (Formaldehyde, 4-Chlorobenzaldehyde).

Author: Taha M. Salih Department of Sience/ College of Basic Education
Journal: journal of the college of basic education مجلة كلية التربية الاساسية ISSN: 18157467(print) 27068536(online) Year: 2013 Volume: 19 Issue: 77 Pages: 1-12
Publisher: Al-Mustansyriah University الجامعة المستنصرية


Article
STUDY THE EFFECT OF MICROWAVE HEATING ON PHYSICAL PROPERTIES OF ASPHALT

Authors: Raad Yahya Faleh --- Wathiq Kareem Saleh --- Haider Salman Mohammed
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2018 Volume: 22 Issue: 2 (Part-5) Pages: 127-135
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

In this work, the effect of microwave on asphalt (heating rat, resistance to deformation and retain stability) was examined. Two different asphalt samples were used. The first, standard asphalt (A) and the second one with %2 of sulfur in bitumen (B) have been exposed to microwave. The measured temperature on the surface showed an increase up to 120 ºC in 5 minutes for sample A, while it reached to 145 ºC for sample in the second cycle of exposure to microwave in the same time. The increase rate in temperature for B samples was slightly lower. The presence of sulfur in asphalt reinforced the physical properties and the asphalt became more resistant to water and rutting for sample B after exposure to microwave radiation. Theoretically, the rise of temperature was found to be (0.64 ºC/minute) for one ton of asphalt needing microwave power energy of 1000 watt, but practically, some of this energy loss can be attributed to the conductivity and the penetration of the wave out of asphalt region. This study proved that the better incident angle reducing this loss by using the equation ɵ=sin-1(x/(1/ α)), and was found to be 28ºC and 37ºC for sample A and B respectively. The results showed the possibility of using microwave radiation in repairing the damaged roads asphalt with economic effective and green method.


Article
Evaluation of serum anti-cyclic citrullinated peptide antibodies level in rheumatoid patients with and without periodontitis

Author: Fatin M. Jarallah فاتن جار الله
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: 4 Pages: 83-87
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Rheumatoid arthritis (RA) and periodontitis (PD) are widely prevalent diseases and are characterized bytissue destruction due to chronic inflammation. Recently, there is growing evidence that the two diseases sharemany pathological features. An association between periodontitis and rheumatoid arthritis has been consideredmany years ago. The current study was established to evaluate the serum ACCP levels in rheumatoid arthritis patientswith and without periodontitis, in addition to study the correlation between serum ACCP levels and periodontalparameters.Subjects and methods: A total of 95 subjects were enrolled in this study, age ranged (35 – 55) years divided into 3groups: Group I consist of 45 rheumatoid arthritis patients with periodontitis, while group II consist of 35 rheumatoidarthritis patients without periodontitis and group ÉÉÉ which consist of 15 apparently- healthy controls. . Periodontalparameters used in this study were plaque index (PI), gingival index (GI), probing pocket depth (PPD), clinicalattachment level (CAL) and bleeding on probing (BOP). Blood samples were collected from each subject todetermine serum concentrations of ACCP by means of enzyme-linked immune-sorbent assay (ELISA).Results: present study revealed that serum ACCP levels were significantly higher in rheumatoid patients withperiodontitis (P<0.001) than that in other two groups. Regarding the correlation between serum ACCP levels andperiodontal parameters, the current study showed positive correlation between serum ACCP and each of plaqueindex, gingival index and probing pocket depth.Conclusion: The current results provide strong evidence of association between periodontitis and rheumatoid arthritis,and suggested that periodontitis may play an important role in activation and triggering immune response

Keywords

Background: Rheumatoid arthritis --- RA and periodontitis --- PD are widely prevalent diseases and are characterized by tissue destruction due to chronic inflammation. Recently --- there is growing evidence that the two diseases share many pathological features. An association between periodontitis and rheumatoid arthritis has been considered many years ago. The current study was established to evaluate the serum ACCP levels in rheumatoid arthritis patients with and without periodontitis --- in addition to study the correlation between serum ACCP levels and periodontal parameters. Subjects and methods: A total of 95 subjects were enrolled in this study --- age ranged --- 35 – 55 years divided into 3 groups: Group I consist of 45 rheumatoid arthritis patients with periodontitis --- while group II consist of 35 rheumatoid arthritis patients without periodontitis and group ÉÉÉ which consist of 15 apparently- healthy controls. . Periodontal parameters used in this study were plaque index --- PI --- gingival index --- GI --- probing pocket depth --- PPD --- clinical attachment level --- CAL and bleeding on probing --- BOP. Blood samples were collected from each subject to determine serum concentrations of ACCP by means of enzyme-linked immune-sorbent assay --- ELISA. Results: present study revealed that serum ACCP levels were significantly higher in rheumatoid patients with periodontitis --- P<0.001 than that in other two groups. Regarding the correlation between serum ACCP levels and periodontal parameters --- the current study showed positive correlation between serum ACCP and each of plaque index --- gingival index and probing pocket depth. Conclusion: The current results provide strong evidence of association between periodontitis and rheumatoid arthritis --- and suggested that periodontitis may play an important role in activation and triggering immune response

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