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Article
Left Jordan -Centralizer on Completely Prime -Ring
تمركزات- جوردان اليسارية على الحلقات- الاولية المتكاملة

Author: Dr. Salah Mehdi Salih د. صلاح مهدي صالح
Journal: journal of the college of basic education مجلة كلية التربية الاساسية ISSN: 18157467(print) 27068536(online) Year: 2013 Volume: 19 Issue: 80 / علمي Pages: 895-900
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Let M be -ring this research introduce the concepts of left (resp. right) -centralizer, left (resp. right) Jordan -centralizer, left (resp. right) Jordan triple -centralizer of -ring as well as prove that every left (resp. right) Jordan -centralizer of completely prime -ring M is left (resp. right) -centralizer of M.Mathematics Subject Classification: 16W25,16A12, 16A78.

لتكن M حلقة-  البحث قدم المفاهيم التالية تمركز- اليساري (اليميني على التوالي ), تمركز- جوردان اليساري ( اليميني على التوالي ) وتمركز- جوردان الثلاثي اليساري (اليميني على التوالي ) على حلقة- كما برهن البحث كل تمركز- جوردان اليساري ( اليميني على التوالي ) على الحلقة - الاولية المتكاملة M هو تمركز- اليساري (اليميني على التوالي ) على M.


Article
Left Ventricular Function in Early Stages of Ischemia

Author: Nadiya Younis Mohammed
Journal: Iraqi Academic Scientific Journal المجلة العراقية للاختصاصات الطبية ISSN: 16088360 Year: 2008 Volume: 7 Issue: 1 Pages: 26-29
Publisher: The Iraqi Borad for Medical Specialization المجلس العراقي للاختصاصات الطبية

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Abstract

ABSTRACT:BACKGROUND:Ischemic heart diseases are common diseases that influence the heart performance via the changesoccurring in cardiac muscles resulting from the disease. These changes can affect the left ventricular wall,septum thickness and an eventual effect on the cardiac performance.AIM OF THE STUDY:The merit of this work is to investigate the effects of left ventricular function on patients who suffer fromearly ischemic heart.METHODS:Twenty five patients complaining from chest pain and diagnosed as angina were subjected to ourinvestigation, they were free from other cardiac diseases and have no previous heart attack their averageage was (52.85±12.69 years old). Eighteen normal individuals (control) with average age (48.33±12.55years old) are chosen and are free from any disease. M-mode, 2- dimensional parasternal long axis viewwas used in the measurements of LV interdiameter, septum and posterior wall thicknesses. Dopplerechocardiography tracing of four chamber apical view was obtained to indicate the ejection time andmitral flow velocities at early diastole E and at atrial contraction (end of diastole) A.RESULTS:The effect of early IHD was found on the interventricular septum (decreased by 44.18%), posterior leftventricular wall (decreased by 47.62%), fractional shortening (decreased by 28.93%), and ejection fraction(decreased by 20.05%). There was no significant change observed on the A/E ratio but a significantchange was seen on E wave only.CONCLUSION:In early of IHD, ejection fraction and percentage changes of wall thickness indicate cardiac performance.In addition reduced early mitral flow velocity is more frequent than the change in early to late mitral flowvelocity ratio.


Article
Influence of thrombolytic therapy on early and long term leftventricular systolic function in patients with ST-segment elevation myocardial infarction
تأثير العلاج الخثاري على وظيفة الانقباض البطيني الأيسر والطويل الأجل في المرضى الذين يعانون من احتشاء عضلة القلب من الفئة ارتفاع جزء ST

Authors: Abdulkareem A. AL-Othman --- Mohammed Hassan Alwan
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2011 Volume: 15 Issue: 1 Pages: 20-26
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objectives: Left ventricular systolic dysfunction complicating acute myocardial infarction are responsible for significant morbidity and mortality. This study to assess the effect of thrombolytic therapy on the left ventricular systolic function during the first week and a year after ST- elevation myocardial infarction.Methods: In a study of 56 patients with first ST-Segment elevation myocardial infarction (42 men and 14 women; age range, 42-89 years (mean, 61 ± 10), who had been admitted to the Coronary Care Unit at Hawler Teaching Hospital from May 2008 to May 2009. study done to assess the left ventricular systolic function during the first week and first year after ST-elevation myocardial infarction.Twenty one patients received tissue plasminogen activator (Alteplase) 12 hour after the onset of symptoms labeled as group-I, the remaining patients (35), had no chance to receive thrombolytic therapy labeled as group II.Results: In group I the mean ejection fraction improved significantly from 51.6±9.4 during the first week to 55.14±11, P=0.034, at first year after acute myocardial infarction, while in group II there was no significant difference of mean ejection fraction during the first week (45.97±12.2) and first year of acute myocardial infarction (46.1±13.2),P=0.5.Conclusions: Thrombolytic therapy has a beneficial effect on left ventricular systolic function detected by echocardiography at the end of the first year of ST-elevation myocardial infarction


Article
ON GENERALIZED(, )- REVERSE DERIVATIONS OF PRIME RINGS
حول تعميم مشتقات(, ) - المعكوسه للحلقات الاوليه

Author: Anwar Khaleel Faraj انوار خليل فرج
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2011 Volume: 52 Issue: 2 Pages: 218-224
Publisher: Baghdad University جامعة بغداد

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Abstract

In this paper we will introduce the concept of (, ) reverse derivation, generalized (, ) reverse derivation and generalized left (, ) derivation. Let R be a 2-torsion free prime ring and U a Lie ideal of R such that u2U, for all uU. The main result of this paper states that if F is a generalized (, ) reverse derivation on R which also acts as a homomorphism or as anti- homomorphism on U, then either d=0 or UZ(R) Further, as an application of this result it is shown that, if every generalized left (, ) derivation on R which also acts as a homomorphism or as anti- homomorphism on U, then either d=0 or UZ(R).

في هذا البحث سنقدم مفهوم كل من مشتقة(, ) المعكوسه، تعميم مشتقة(, ) المعكوسه وكذلك تعميم مشتقة(, ) اليسرى.لتكن R حلقة اوليه طليقة الالتواء من النمط 2 و Uمثالي لي بحيث u2Uكل uU.الهدف الرئيسي لبحثنا هو اذاكانتF هي تعميم مشتقة (, ) المعكوسه على R بحيث تكون تشاكل او تشاكل ضد على U فاما d=0 او UZ(R).بالاضافه الى ذلك، كتطبيق على هذه النتيجه برهنا كل تعميم مشتقة(, ) على R بحيث تكون تشاكل او تشاكل ضد فاماd=0 او UZ(R).


Article
Jordan Left Derivation and Jordan Left Centralizer of Skew Matrix Rings
اشتقاق جوردان اليساري وتطبيق جوردان المركزي اليساري على حلقات المصفوفات

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Abstract

In this paper, we determine the form of Jordan left derivation and Jordan Left Centralizers of a Skew matrix ring M_2 (R;σ,q) over a ring R .

في هذا البحث حددنا شكل اشتقاق جوردان اليساري وتطبيق جوردان المركزي اليساري على حلقة المصفوفات M_2 (R;σ,q) على الحلقة R.


Article
On Generalized Left Derivation on Semiprime Rings
حول الاشتقاق المعمّم الايسرعلىالحلقات شبه الأولية

Authors: A. H. Majeed --- Shaima,a B. Yass
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2016 Volume: 34 Issue: 1 Part (B) Scientific Pages: 87-92
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Let R be a 2-torsion free semiprime ring. If R admits a generalizedleft derivation F associated with Jordan left derivation d, then R is commutative, if any one of the following conditions hold: (1) [d(x), F(y)] [x, y], (2) [d(x), F(y)] xoy, (3) d(x)oF(y) xoy, (4) d(x)oF(y) [x, y], for all x, yR.

لتكن Rحلقة شبه أولية طليقة الالتواء من النمط٢، إذا احتوت R على الاشتقاق الأيسر المعمّم F المرتبط باشتقاق جوردان الأيسرd، فأن R حلقة تبادلية، إذا تحقق احد الشروط التالية: (1) [d(x), F(y)] [x, y] ، (2) [d(x), F(y)] xoy، (3) d(x)of(y) xoy، (4) d(x)oF(y) [x, y]، لكل x, y في R.


Article
The Association of Duration of QRS Complex in Left Bundle Branch Block with Left Ventricular Systolic Function

Author: Farznda Mustafa Salih Zebari, Abdulkareem Abdulwahab Al‑Othman
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2019 Volume: 16 Issue: 3 Pages: 238-242
Publisher: Babylon University جامعة بابل

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Abstract

Background: Left bundle branch block (LBBB) indicates organic heart disease. It is responsible for a greater degree of asynchrony in the leftventricular (LV) contraction as a result of alteration in LV depolarization sequence. This study aimed to compare the duration of QRS complexin LBBB in relation to LV systolic function by two‑dimensional transthoracic echocardiography. Patients and Methods: In this cross‑sectionalstudy, 82 patients with LBBB were divided into two groups. Group I defined as QRS <160 ms and Group II defined as QRS ≥160 ms. Then,the relationships between QRS duration and echocardiographic LV ejection fraction (EF) were derived. LV systolic dysfunction defined asEF <40%. Results: Eighty‑two patients with (LBBB) had been included in the study, the duration of the QRS complex of 55 patients (67%)was <160 ms (Group I), and it was ≥160 ms (Group II) in 27 patients (33%). More than half (55.6%) of Group II aged ≥70 years compared with38.2% of Group I (P = 0.001). Group II had high incidence of LV systolic dysfunction (70.4%) compared with 20% in Group I, while 18.2%of Group I had an EF of ≥60% compared with 3.7% in Group II (P < 0.001). Conclusion: The prolongation of QRS duration (≥160 ms) inLBBB is a marker of significant LV systolic dysfunction.


Article
Left Ventricular Remodeling Patterns in Chronic Heart Failure

Author: Muataz Fawzi Hussein
Journal: Iraqi Academic Scientific Journal المجلة العراقية للاختصاصات الطبية ISSN: 16088360 Year: 2012 Volume: 11 Issue: 4 Pages: 551-556
Publisher: The Iraqi Borad for Medical Specialization المجلس العراقي للاختصاصات الطبية

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Abstract

ABSTRACT:BACKGROUND:Patients with heart failure show a wide spectrum of changes in left ventricular volume, mass, and function.OBJECTIVE:The aims of this study were to define the patterns of left ventricular structural and functional remodeling and consider their clinical implications in patients with chronic heart failure.PATIENTS AND METHODS:Two-dimensional echocardiograms were obtained for patients with chronic heart failure in Baghdad teaching hospital during the period from February 2009 to February 2011 and were used to calculate left ventricular volume, mass, geometry, and ejection fraction. Inclusion required the diagnosis of heart failure in symptomatic patients on medical therapy. Measures of left ventricular size or function were not used as inclusion or exclusion criteria.RESULTS:Two hundred and eighty (280) patients were included in this study of whom 154 were males and 126 were females. The mean age of patients was 58 ± 17 years. Plots of ejection fraction against left ventricular end-diastolic volume showing an inverse curvilinear relation allowed a description of 4 remodeling patterns. Pattern A (n = 58) was defined as normal end-diastolic volume (<91 ml/m2) and normal ejection fraction (>50%); 67.24% of these patients showed left ventricular hypertrophy or concentric remodeling. Pattern B (n = 58) was defined as normal end-diastolic volume and depressed ejection fraction; hypertrophy or concentric remodeling was present in 65.51%. Pattern C (n = 153) was defined as increased end-diastolic volume and depressed ejection fraction; eccentric hypertrophy was present in 94.77%. Pattern D (n = 11) was defined as increased end-diastolic volume and normal ejection fraction; eccentric hypertrophy was present in 81.81%.CONCLUSION:These patterns of remodeling encompass a wide spectrum of geometric changes with different clinical and pathophysiologic features and possibly different management strategies.


Article
Commutativity of Left Near-Rings

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Abstract

Several authors have proved theorems for prime and semiprime near-rings admitting a derivations acts as a homomorphism (an anti-homomorphism) or Daif 2-derivations. In an early paper, Bell and Kappe proved that if d is a derivation of a semiprime ring R which is either an endomorphism or anti-endomorphism, then d = 0. They also showed that if d is a derivation of a prime ring R which acts as a homomorphism or an anti-homomorphism on U, where U is a non-zero right ideal, then d = 0 on R. Wang proved the following ,let n be a positive integer, N an n!-torsion free prime near-ring and d a derivation such that dn (N) = {0}.Then d (Z)={0}.Deng and Ashraf


Article
Stenting of Unprotected Left Main Coronary Artery Stenoses: Immediate and six months Outcomes
وضع دعامة لتضيق الشريان التاجي الرئيسي الأيسر : النتائج الفورية وبعد ستة أشهر

Authors: Hikmat Al-Shaarbaf --- Ali Jabbar Al-Ibrahemi --- Khalid I. Amber
Journal: kufa Journal for Nursing sciences مجلة الكوفة لعلوم التمريض ISSN: 22234055 Year: 2015 Volume: 5 Issue: 3 Pages: 65-71
Publisher: University of Kufa جامعة الكوفة

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Abstract

Background: Revascularization with coronary bypass grafting (CABG) has been the gold standard therapy forleft main coronary artery ( LMCA) stenosis. Improvements in angioplasty and coronary stent techniques and equipment warrant a reappraisal of angioplasty in LMCA stenosis.Objectives: To assess in-hospital and six-month clinical outcomes after stenting of unprotected left main coronary artery (LMCA) stenosis.Methods:Prospective study in a tertiary center of interventional cardiology and cardiac surgery for64 patients with unprotected LMCA stenoseswho were treated with bare-metal stents and underwent angiographic follow-up at 3 and months following the intervention.Results: The procedural success rate was 100% with no episodes of acute orsubacute stent thrombosis. in-stent restenosis rate was 15.6% and 15.9% in the first 3 and 6 months respectively. Six month mortality was nil. Conclusion: Stenting of unprotected LMCA stenosis deserves to be considered a safe and effective alternative to CABG in carefully selected patientsRecommendation: Larger series should clarify whether unprotected LMCA stenting has the same favourable results as CABG .

الخلفية: تعتبر إعادة الوعائية بواسطة زراعة الشرايين القاعدة الذهبية لعلاج تضيق الشريان التاجي الرئيسي الأيسر. إن تحسن وتطور التداخل القسطاري باستعمال الدعامات يستدعي إعادة تقييم هذه الطريقة في العلاجالهدف: لتقييم النتائج الفورية وبعد مضي ستة أشهر لوضع دعامة لتضيق الشريان التاجي الرئيسي الأيسر غير المحميالمنهجية: دراسة مستقبلية في مركز ثلاثي للتداخل القسطاري وجراحة القلب حيث تم علاج 64 مريضاُ يعانون من تضيق الشريان التاجي الرئيسي الأيسر غير المحمي بواسطة الدعامات المعدنية المجردة، وتم إجراء المتابعة بواسطة التصوير الوعائي (قسطرة الشرايين التاجية) بعد مضي 3 و 6 أشهر من إجراء التداخل.النتائج: كانت نسبة نجاح إجراء التداخل 100% مع عدم حدوث حالات تخثر داخل الدعامة الحاد و شبه الحاد. وظهر ان نسبة رجوع التضيق داخل الدعامة 15.6% و 15.9% في غضون الثلاثة والستة أشهر الأولى على التوالي ولم تحصل حالات وفاة خلال هذه المدة.الاستنتاج: ان وضع دعامة لتضيق الشريان التاجي الرئيسي الأيسر يستحق أن يعتبر بديلاً أميناً وفعالاً لزراعة الشرايين لدى بعض المرضى الذين يتم اختيارهم بعناية.التوصيات: سلسله اكبر من الدراسات يجب ان توضح فيما اذا كان وضع دعامه لتضيق الشريان التاجي الرئيسي الايسر له نفس النتائج الإيجابية لزراعة الشرايين التاجية.

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