Survey on Deep Learning applied to predictive maintenance

Prognosis Health Monitoring (PHM) plays an increasingly important role in the management of machines and manufactured products in today’s industry, and deep learning plays an important part by establishing the optimal predictive maintenance policy. However, traditional learning methods such as unsupervised and supervised learning with standard architectures face numerous problems when exploiting existing data. Therefore, in this essay, we review the significant improvements in deep learning made by researchers over the last 3 years in solving these difficulties. We note that researchers are striving to achieve optimal performance in estimating the remaining useful life (RUL) of machine health by optimizing each step from data to predictive diagnostics. Specifically, we outline the challenges at each level with the type of improvement that has been made, and we feel that this is an opportunity to try to select a state-of-the-art architecture that incorporates these changes so each researcher can compare with his or her model. In addition, post-RUL reasoning and the use of distributed computing with cloud technology is presented, which will potentially improve the classification accuracy in maintenance activities. Deep learning will undoubtedly prove to have a major impact in upgrading companies at the lowest cost in the new industrial revolution, Industry 4.0

Using the Asian Knowledge Model “APO” as a Determinant for Performance Excellence in Universities- Empirical Study at Al -Azhar University- Gaza

This study aims to use the Asian knowledge model “APO” as a determinant for performance excellence in universities and identifying the most effecting factors on it. This study was applied on Al-Azhar University in Gaza strip. The result of the study showed that (APO) model is valid as a measure and there are four dimensions in the model affecting significantly more than the others (university processes, KM leadership, personnel, KM outputs). Furthermore, performance excellence produced though modernizing the means of education, curriculum development, technology and flexibility in the organizational structure. The study recommends expanding the usage of (APO) model, enhancing the role of knowledge leadership, technology, organizational flexibility, sharing culture and incentive systems that encouraging innovation

Reckless formalin injection in the eyelid instead of local anesthetic: case report

Accidental injection of formalin is certainly rare, but it has serious consequences in terms of morbidity and mortality. We report a case of severe ophthalmic damage due to an accidental formalin's injection in the eyelid of a three-year-old child presenting with congenital ptosis's surgical repair of her left eye. This accident has damaged the orbital region and led to upper left eyelid's necrosis, eyeball's deformation and ipsilateral cataract. In terms of our observation, we discussed consequences of this rare type of accident, and its systematic and loco-regional effects. We tried also to explain these manifestations by analyzing the metabolism process of formalin in the human body. Finally, a medico-legal implication of such accident has been illustrated according to the Tunisian law (Penal Code of the Tunisian republic 'PCT').The Pan African Medical Journal 2016;2

Effect of cobalt on growth and cobalt uptake of barely in relation to cobalt availability in alkaline soils

A short term Neubauer experiment was conducted to evaluate the effect of cobalt on the growth as well as cobalt uptake of barely (Giza 126 variety) grown in three alkaline soils from the north west coast of Egypt in relation to AAAA-EDTA (Acetic Acid Ammonium Acetate-EDTA) extractable cobalt in the tested soils of the uncropped treatments. Treatments of five levels of cobalt (0, 5, 10, 20, 40, 80, and 100 mg/kg soil) were superimposed on the tested soils. The data indicated that the available cobalt concentration increased with increasing cobalt application rate. The concentration of cobalt extracted with AAAA-EDTA increased polynomialy in response to cobalt application for the three studied soils. The data showed also, that the effect of cobalt application on the growth of barely plants was significant on the clay soil (Soil A) and insignificant on the clay loam and sandy loam soils (Soils B and C). The higher dry matter yields were obtained with the application of cobalt to the soils at the rate of 20 mg Co/Kg soil. The tolerance index (Ti) for the addition of 5 to 80 mg Co/Kg soil (>1) shows a favourable effect for the growth of barley. Also, the tolerance index was varied with the soil characteristics. Cobalt concentration or uptake by barley was increased significantly with cobalt application and this was also evidenced by the increase in AAAA- EDTA extractable cobalt from the tested soils. The average uptake values of cobalt followed the sequence order: soil C (sandy loam) >soil B (clay loam)> soil A (clay). Also percentage utilization of added cobalt was highest in soil C followed by soil B and soil A. In conclusion the application of cobalt in a low level improved growth of barely and may be applied to the soil at the recommended rate in term of cobalt sulphate

The use of latissimus dorsi mini-flap in partial breast reconstruction

Introduction: The cosmetic drawbacks of breast conserving surgery are asymmetry, nipple or skin retraction, and volume loss with unsatisfactory cosmetic outcome. The principle of Latissimus dorsi mini-flap (LDMF) is to use part of the Latissimus dorsi (LD) muscle as volume replacement to large breast defect up to 20 -30 % of the breast volume. Purpose: To evaluate (LDMF) as a volume replacement to large breast defect after wide local excision in different breast quadrants and the benefit of using this procedure regarding the cosmetic outcomes, patient satisfaction, procedure-related complications. Materials and Methods: The study was carried out at the National Cancer Institute, Cairo University, Egypt, from September 2017 to December 2018. Fifteen patients were selected. Wide local excision with post-resection defects of 20%-30% of breast volume were done. An inferolateral incision was done for both tumor resection and LDMF harvesting without any back scar. The patients were scheduled for regular follow up. Results: All the resection margins were negative. Mean Operative time was 176.6 minutes, the mean hospital stay was 2.47 days. The mean score for sensory preservation was 7.66. The mean of visual analogue score VAS was 8.33 with a score range from 8 to 9. The mean of the surgeon evaluation was 8.53. The median ranged from 8 to 9. Conclusion: LDMF makes BCS possible to a group of patients who are classically required mastectomy. It is particularly benefical to patients that responds poorly to neoadjuvant chemotherapy or with wide spreading DCIS

In vitro study of the PLA2 inhibition and antioxidant activities of Aloe vera leaf skin extracts

<p>Abstract</p> <p>Background</p> <p>In the present work we determined the total phenolic content of <it>Aloe vera </it>leaf skin (AVLS) extracts by using various solvents (hexane, chloroform-ethanol (1/1), ethyl acetate, butanol and water). We have also evaluated the antioxidant and the anti-PLA2 properties of these extracts by measuring their inhibition potency on the human pro-inflammatory phospholipase A2 (group IIA).</p> <p>Results</p> <p>The water extract exhibits the highest inhibitory effect with an IC₅₀= 0.22 mg/ml and interestingly no effect was observed on the digestive phospholipase A2 (group IB) even at a concentration of 5 mg/ml. Antioxidant activities were also analyzed and the most active extracts were observed when using chloroform ethanol (1/1) and ethyl acetate (IC₅₀= 0.274 and 0.326 mg/ml, respectively). Analysis of the total phenolic content reveals that the water extract, with the best anti-PLA2 effect, was poor in phenolic molecules (2 mg GAE/g). This latter value has to be compared with the chloroform-ethanol and the ethyl acetate extracts (40 and 23.8 mg GAE/g, respectively), mostly responsible for the antioxidant activity.</p> <p>Conclusion</p> <p>A significant correlation was established between the total phenolic content and the antioxidant capacity but not with the anti PLA2 activity. Results from phytochemical screening suggest that the anti PLA2 molecules were probably catechin tannins compounds.</p

إستراتيجية تطوير قطاع الصناعات الغذائية غير المنظم في سورية

  ستعرض هذه الدراسة ظاهرة القطاع الصناعي الغذائي غير المنظم , والتي تعتبر من أبرز القضايا الاقتصادية نظراً لانتشارها في كاف المناطق الجغرافية وعلى الرغم من أهمية هذا الموضوع لكن تبقى الدراسات التي تبحث في هذه في هذا الشأن قليلة جداً وهي غير كافية  لرفد اي خطة تهدف الى تنظيم وتنمية هذا القطاع . تبحث هذه الدراسة في  مفهوم القطاع غير المنظم بشكله العام وصولاً الى القطاع صناعات الغذائية غير المنظم ومكونات هذا القطاع ومخرجاته من أنشطة وخدمات والاسباب التي تحفز تواجد ونمو هذه الصناعات غير المنظمة وعلاقته بالمستوى الاقتصادي للأفراد  وما هي الخطوات الواجب اتخاذها لتنظيم هذه الصناعات . وتحليل مشاكله وإمكانات تنميته من خلال تأطيره وتقنينه بهدف تحسين أداء القطاع وتنظيمه، وتطوير الإنتاجية والجودة          

Infant acute myocarditis mimicking acute myocardial infarction

Myocarditis is an inflammatory disease of the myocardium with heterogeneous clinical manifestations and progression. In clinical practice, although there are many methods of diagnosis of acute myocarditis, the diagnosis remains an embarrassing dilemma for clinicians. The authors report the case of 9-month-old infant who was brought to the Pediatric Emergency Department with sudden onset dyspnea. Examination disclosed heart failure and resuscitation was undertaken. The electrocardiogram showed an ST segment elevation in the anterolateral leads with a mirror image. Cardiac enzyme tests revealed a significant elevation of troponin and creatine phosphokinase levels. A diagnosis of acute myocardial infarction was made, and heparin therapy was prescribed. The infant died on the third day after admission with cardiogenic shock. The autopsy showed dilatation of the ventricles and massive edema of the lungs. Histological examinations of myocardium samples revealed the presence of a marked lymphocytic infiltrate dissociating myocardiocytes. Death was attributed to acute myocarditis. The authors call attention to the difficulties of differential diagnosis between acute myocarditis and acute myocardial infarction especially in children, and to the important therapeutic implications of a correct diagnosi

Infant acute myocarditis mimicking acute myocardial infarction

Myocarditis is an inflammatory disease of the myocardium with heterogeneous clinical manifestations and progression. In clinical practice, although there are many methods of diagnosis of acute myocarditis, the diagnosis remains an embarrassing dilemma for clinicians. The authors report the case of 9-month-old infant who was brought to the Pediatric Emergency Department with sudden onset dyspnea. Examination disclosed heart failure and resuscitation was undertaken. The electrocardiogram showed an ST segment elevation in the anterolateral leads with a mirror image. Cardiac enzyme tests revealed a significant elevation of troponin and creatine phosphokinase levels. A diagnosis of acute myocardial infarction was made, and heparin therapy was prescribed. The infant died on the third day after admission with cardiogenic shock. The autopsy showed dilatation of the ventricles and massive edema of the lungs. Histological examinations of myocardium samples revealed the presence of a marked lymphocytic infiltrate dissociating myocardiocytes. Death was attributed to acute myocarditis. The authors call attention to the difficulties of differential diagnosis between acute myocarditis and acute myocardial infarction especially in children, and to the important therapeutic implications of a correct diagnosi