Using Autoclave Furnace to Improve Properties of Mixing an Autoclaved Aerated Concrete Waste with Window Glass Waste

إن كتل الخرسانة الخلوية أو ما يسمى بالثرمستون أصبح له استخدامات كثيرة في السنوات الأخيرة في عمليات البناء والإنشاءات والتقطيع في الدور و العمارات نظرا لتميزه بمواصفات مثل العزل الحراري الخاص للاستخدام في البنايات من الداخل والخارج, خفة وزنه و كبر حجم المقاطع المستخدمة. ومع ذلك فان له مقاومة انضغاط قليلة ومسامية قليلة عند استخدامه. في هذا البحث تركزت الدراسة العملية على خلط مسحوق الخرسانة الخلوية مع نسب مختلفة من الزجاج المتبقي حيث تم دراسة تأثير هذه النسب من الزجاج على خواص الثرمستون والتي تشمل الخواص الفيزيائية (الكثافة, الامتصاصية, المسامية) , الخواص الميكانيكية (مقاومة الانضغاط, الصلادة), والخواص الحرارية (التوصيلية الحرارية, الصدمة الحرارية). الكثافة تزداد الى (1583 كغم/م3), والامتصاصية تنخفض الى (  23.44 %)  والمسامية ايضا تنخفض الى (% 39.8) عند نسبة  وزنية (30)% من الزجاج المضاف. ايضا مقاومة الانضغاط تزداد الى (26.27 نيوتن/ملم2) والصلادة تتحسن الى (.13.88) عند نسبة وزنية من  الزجاج المضاف  (30  )% . وأخيرا التوصيلية الحرارية تبين تحسن جيد (0.5311 واط/ م. م◦) عند نفس النسبة من الزجاج المضاف, في حين ان الصدمة الحرارية تبين نتائج جيدة عند الاضافات (10, 20, 30) % عند درجة حرارة (250 م◦) لكن حصل الفشل عند درجة حرارة (350 م◦) لنفس الفترة الزمنية.Autoclaved aerated concrete (ACC) or thermostone is now becoming increasingly used in constructions, building and partition works due to its  properties such as a highly thermal insulating concrete-based material used for both internal and external construction, light weight and large size. However,  its low compressive strength and high porosity affected its use. In this research the experimental part focused on mixing an autoclaved aerated concrete (AAC) in the form of powder with different ratios of window glass wastes powder, then study the influence of these additives onto properties of thermostone in  terms of physical (absorption, porosity, density), mechanical (compressive and hardness), and thermal properties (thermal conductivity and thermal shock). The bulk density increased to about (1562Kg/m3), porosity and water absorption have been decreased to about (39.8 %, , 23.44%) respectively with the addition ratio (30) %  by weight. of glass. Also the compressive strength has been getting good result (26.27 N/mm2) and hardness, improved (13.88) at the percentage of waste glass (30) % by weight compared to the sample with no-additive. Finally, thermal conductivity with the result (0.5311 watt/m.◦c) at the same percentage of waste glass, while thermal shock showed well result with the additives (10, 20, 30) % by weight at temperature 250 ◦C for 1 h, but failed at temperature of 350 ◦C for the same time.&nbsp

Application of hierarchical method and fuzzy AHP-TOPSIS method for multi-criteria decision making in financing

Purpose: One way to make more profit in different companies is to choose the right method of financing. While the impact of financial structure on the economic structure is so important that today they believe that economic growth cannot be achieved without an efficient financial sector. The method of financing is financial. At first, in this study, the fuzzy Delphi method (Delphi) has been used in order to identify the factors and criteria of supply. Research methodology: The absorption of foreign capital has been identified as a method of financing. For this purpose, in this research, AHP hierarchical analysis method is used. Results: In this article, the application of fuzzy AHP - TOPSIS method for the problem of financing is investigated. The process of managing financial resources is one of the reasons for allocating its technical equipment to various applications in this company. Limitations: However, the results of our studies show that although a set of known values in this company, the financing process may not adhere strongly to these values. Emphasis on evaluation aspects - changes in various areas that indicate local values may also affect the supply trend. Contribution: Multi-criteria decision methods are useful in that they provide a basis for analyzing and transforming complex and complex problems into simpler ones; In that framework, the planner can easily evaluate the options with the help of criteria and sub-criteria. Using these methods can help a lot in choosing the best available solution. Other advantages of these methods include flexibility, simplicity of calculations and the possibility of the final ranking of options

Appraisal of different ultrasonography indices in patients with carotid artery atherosclerosis

In this study a semi-automated image-processing based method was designed in which the parameters such as intima-media thickness (IMT), resistive index (RI), pulsatility index (PI), dicrotic notch index (DNI), and mean wavelet entropy (MWE) were evaluated in B-mode and Doppler ultrasound in patients presenting with carotid artery atherosclerosis. In a cross-sectional design, 144 men were divided into four groups of control, mild, moderate and severe stenosis subjects. In all individuals, far wall IMT, RI, PI, DNI, and MWE of the left common carotid artery (CCA) were extracted using the proposed method. Our findings showed that the maximum far wall IMT, RI, PI, DNI in the CCA were significantly different in the patients with mild, moderate, and severe stenosis compared to control group (p-value 0.05). The proposed method can help physicians to better identify patients at risk of cardiovascular diseases

A weighted goal programming approach to fuzzy linear regression with quasi type-2 fuzzy input-output data

This study attempts to develop a regression model when both input data and output data are quasi type-2 fuzzy numbers. To estimate the crisp parameters of the regression model, a linear programming model is proposed based on goal programming. To handle the outlier problem, an omission approach is proposed. This approach examines the behavior of value changes in the objective function of proposed model when observations are omitted. In order to illustrate the proposed model, some numerical examples are presented. The applicability of the proposed method is tested on a real data set on soil science. The predictive performance of the model is examined by cross-validation.Publisher's Versio

A study on the cultural challenges facing Iranian organizations

One of the Iran’s most important issues in recent years has been management, which developments and shortcomings were pointed out by the compassionate and hardworking authorities in their speeches and public/private meetings. Undoubtedly, each country’s development and improvement majorly owes to the success gained by its management. In fact, it owes to what management pays attention to and gives rewards for it. The strongest cultural index is often organizational. There is a positive correlation between desired values of organizational culture and employees’ behavior. Therefore, governmental organizations can promote their employers performance by promoting organizational culture components such as impulsiveness and competition spirit, maturity, encourage employers to be creative, risk takers, and organizing employees’ activities around group working. This is a descriptive-analytic study which examines organizational culture and management challenges. The result of the study revealed that organizational culture examination acts as a data gathering tool and enable managers to 1) compare and contrast effective groups and departments, 2) prioritize issues and 3) identify employers’ perceptions and expectations in order to overcome challenges and gaps in the current situation. So, desired organizational culture has a significant impact of institutionalizing cooperative management system in organizations. Present study examines basic Iranian organization managers’ damages and challenges. It also, provides strategies to confront these. At the end, some suggestions are given to support organization culture and remove management challenges

A study on the cultural challenges facing Iranian organizations

One of the Iran’s most important issues in recent years has been management, which developments and shortcomings were pointed out by the compassionate and hardworking authorities in their speeches and public/private meetings. Undoubtedly, each country’s development and improvement majorly owes to the success gained by its management. In fact, it owes to what management pays attention to and gives rewards for it. The strongest cultural index is often organizational. There is a positive correlation between desired values of organizational culture and employees’ behavior. Therefore, governmental organizations can promote their employers performance by promoting organizational culture components such as impulsiveness and competition spirit, maturity, encourage employers to be creative, risk takers, and organizing employees’ activities around group working. This is a descriptive-analytic study which examines organizational culture and management challenges. The result of the study revealed that organizational culture examination acts as a data gathering tool and enable managers to 1) compare and contrast effective groups and departments, 2) prioritize issues and 3) identify employers’ perceptions and expectations in order to overcome challenges and gaps in the current situation. So, desired organizational culture has a significant impact of institutionalizing cooperative management system in organizations. Present study examines basic Iranian organization managers’ damages and challenges. It also, provides strategies to confront these. At the end, some suggestions are given to support organization culture and remove management challenges

Dental caries experience and related factors among a clustered random sample of students in occupied Palestinian territory: a cross-sectional study

Background Dental caries is still the most prevalent chronic disease worldwide. In the occupied Palestinian territory, data about oral health status and its determinants are scarce. This study aimed to assess the prevalence of dental caries and associated factors among schoolchildren in a random sample of marginalised schools in the West Bank. Methods Marginalised schools (according to the School Support Program [SPP] criteria) were stratified by district, gender, and grade level to select a random sample of 20 schools. Students in the sixth and ninth grades were interviewed by senior dental students about their oral hygiene and diet habits. Students’ weight, height, gingival health, and dental caries experience were assessed. Senior dental students were trained and calibrated to carry out the interviews and the examinations. Parental informed consents were collected by school administrative staff. Ethics approval for the study was obtained from the Al-Quds University Scientific Research Ethics Committee. Findings In total, 1282 students completed the interviews and the clinical screening. The mean decayed, missing and filled teeth (DMFT) index was 6·4 (SD 4·4). According to the WHO dental caries experience classification, 49% (309 of 623) of the sixth grade students and 74% (484 of 658) of the ninth grade students fell in the high and very high categories. The mother’s level of education and recent visit to the dentist correlated negatively with DMFT score (ρ=−0·06, p=0·029; ρ=−0·063, p=0·024). BMI was correlated positively with DMFT (r=0·092, p=0·001). Drinking milk and fresh juices was related to lower DMFT scores (r=−0·077, p=0·006 and r=−0·072, p=0·010). In the final model, grade (β=0·314, p<0·0001), gender (β=0·058, p=0·034), recent visit to the dentist (β=−0·059, p=0·029) and drinking fresh juices (β=−0·054, p=0·047) were significant factors in explaining the high level of dental caries in this sample. Interpretation Students in the marginalised schools of the West Bank have high DMFT scores that indicate high prevalence of dental caries. Access to dental care and bad oral health habits are associated with high disease prevalence. Interventions to improve access to care and increase awareness about healthy diet and hygiene habits are crucial to alleviate the burden of oral disease in this population.Funding AMIDEAST School Support Program (SSP). Contributors EK designed the study, collected and analysed data, and drafted the Abstract. AH contributed to data collection and data entry. MH contributed to the study design. FM contributed to the study design and data collection. All authors have seen and approved the final version of the Abstract for publication. Declaration of interests We declare no competing interests. Acknowledgments We thank the dental students of Al-Quds University who helped with the clinical screening of schoolchildren and data collection

Language Teachers’ Conceptions of Intelligence and their Roles in Teacher Care and Teacher Feedback

Abstract: The purpose of this study was to find the relationships among teachers’ conceptions of intelligence, teacher care, and teacher feedback in the realm of English Language Teaching (ELT). To this aim, three scales were developed to measure the aforementioned constructs. The participants consisted of 81 English as a Foreign Language (EFL) teachers and their 426 students who were learning English in private language institutes. The scales were validated by Confirmatory Factor Analysis (CFA) and the correlations among their subscales were investigated. The findings suggested that modularity, increasibility and applied ELT are associated with the nature and amount of teacher feedback and care as perceived by the students. Moreover, the results revealed that teachers’ conceptions of intelligence significantly affect how they evaluate their students (p \u3c .05). In the end, implications were provided in the context of teaching

Proton MR Spectroscopy in The Diagnostic Evaluation of Suspected Mitochondrial Disease in Iran

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