الخلاصة

يمكن العثور على نفايات البوليمر، التي تستغرق وقتًا لتتحلل، في كل مكان حيث يستخدمها جميع البشر تقريبًا وفي الوقت الحاضر، تتزايد كمية النفايات المصنوعة من البوليمر يومًا بعد يوم مع زيادة عدد سكان العالم مما يؤدي إلى زيادة استهلاك هذه المنتجات. وهذه الزيادة تؤدي إلى استنفاذ الموارد الطبيعية مثل الخشب والبترول بسرعة. وإدراكًا لذلك تم تقديم فكرة إعادة التدوير كطريقة للحد من المشاكل التي تنشأ من عدم إعادة تدويرها. ومن خلال عملية إعادة التدوير، يمكن الحفاظ على الموارد الطبيعية للاستخدام المستقبلي. كما تقلل إعادة التدوير من كمية النفايات وتساعد في مواجهة مشكلة تراكم القمامة وتقلل تكلفة المنتج أيضا لأن تصنيع المنتج من المواد الخام إلى المنتج النهائي يصبح مكلفًا بمرور الوقت. فالمنتجات المعاد تدويرها أرخص دائمًا. ومع ذلك، فإن اختيار إعادة تدوير البوليمر يتطلب الأخذ بعين الاعتبار بعض المعلومات المتعلقة بخصائص مواد النفايات مثل حجمها، وموقعها، وطبيعتها، ودرجة التلوث بالملوثات، ووجود فرص السوق. بناءً على هذه المشكلة، يتم إجراء هذه الدراسة من أجل تطوير مركب من المواد المعاد تدويرها مثل البولي إثيلين منخفض الكثافة المعاد تدويره ونشارة الخشب وكذلك التحقق من ملائمة هذه المجموعة لإعادة البناء. علاوة على ذلك، تحاول هذه الدراسة التطوير والتحقيق في مدى ملائمة استخدام البولي اثيلين المعاد تدويره المملوء داخله نشارة الخشب في تصنيع الألواح الخشبية مع التركيز على الاستقرار والمتانة مع التركيبات المختلفة من خلال دراسة خصائصه من أجل تطوير وتحسين الاستخدام المحتمل لهذا المركب في المستقبل. تم إنتاج عينات من الألواح خلال زيادة نسبة المعزز من النشار بمقدار 10٪ إلى 30٪ إلى 50٪ عند 190 درجة مئوية وضغط 19 كجم / سم2 وزمن الضغط من 9 إلى 12 دقيقة. ومن خلال ذلك تم تحديد الخصائص الميكانيكية لقوة الانحناء، وقوة الشد، وخصائص قوة تأثير الألواح. حيث أظهرت النتائج أن أعلى قيمة لمقاومة الشد 7.87(ميجا باسكال) وقيمة قوة الانحناء 19.80 (ميجا باسكال) وتم الحصول عليها من لوح مكون من 30٪ نشارة الخشب المملوءة في مركب البولي إثيلين منخفض الكثافة المعاد تدويره. وسب ذلك يرجع إلى التوزيع الموحد للمعزز في مركب البولي إثيلين منخفض الكثافة المعاد تدويره هو العامل الرئيسي لتحسين الخصائص الميكانيكية.                                                                            

ABSTRACT

Polymer waste, which takes time to degrade, can be found everywhere as it is used by almost all human being. Nowadays, the amount of garbage or waste that is made of polymer is increasing day after day as the world’s population increases resulting in more consumption these products. This increase of polymer products demand causes natural resources such as wood and petroleum to deplete fast. Realizing this, recycling is introduced as a way to curb the problems that arise. Through the process of recycling, natural resources can be preserved for future use. Also, recycling reduces the amount of waste produce and can help to encounter garbage accumulation problem. It also reduces the cost since manufacturing product from raw material to finished product is getting expensive as time passes. The recycled products are always cheaper. However, the choice of recycling polymer requires taking into consideration some information regarding the characteristics of the waste materials such as scale of the deposit, its location, its nature, degree of contamination by pollutants, and the existence of market opportunities. Based on this problem, this study is done in order to develop composite from recycled material such as WSD and recycled low density polyethylene rLDPE as well as checking this combination’s suitability for refactoring. Furthermore, this study attempts to develop and investigate the suitability of using WSD filled rLDPE in wood board manufacturing with focus on stability and durability with various composite formulations through studying the properties of WSD and rLDPE in order to develop and improve the potential usage of this composite in the future. The composite board is produced by hot pressing the extruded sample by increasing the percentage of WSD from 10 wt%, 30 wt% and 50 wt% at 190°C temperatures and pressure of 19 Kg/cm2 for pressing time 9 to 12 min. The mechanical properties: flexural strength, tensile strength, impact strength properties of boards are determined. The results show that the highest value of tensile strength 7.87 (MPa), and value of flexural strength of 19.80(MPa) are obtained from board of 30 % wood saw dust filled Recycled Low Density Polyethylene composite. The uniform distribution of WSD filler in rLDPE composites is the major factor responsible for the improvement in the mechanical properties.

Keywords: Recycled Low-Density Polyethylene (rLDPE), wood saw dust WSD, Extruder, recycling, filler.

Artificial neural networks have great potential for learning and stability in the face of tiny input data changes. As a result, artificial intelligence techniques and modeling tools have a growing variety of applications. To estimate a solution for fractal-fractional differential equations (FFDEs) of high-order linear (HOL) with variable coefficients, an iterative methodology based on a mix of a power series method and a neural network approach was applied in this study. In the algorithm's equation, an appropriate truncated series of the solution functions was replaced. To tackle the issue, this study uses a series expansion of an unidentified function, where this function is approximated using a neural architecture. Some examples were presented to illustrate the efficiency and usefulness of this technique to prove the concept's applicability. The proposed methodology was found to be very accurate when compared to other available traditional procedures. To determine the approximate solution to FFDEs-HOL, the suggested technique is simple, highly efficient, and resilient.

In this present work, the effect of variation of parts (pulp and peel) on photochemical 

compounds such as phenolics and flavonoids content of the banana flours were 

studied. The results exhibited that different varieties did exhibit significant differences 

on TPC as well as TFC which means that different sample yielded different values of 

TPC and TFC. The TPC was determined in ethanolic extracts of banana peel and pulp 

flour. The TPC was found to be about 0.40 mg/ml in banana peel and about 0.33

mg/ml in banana pulp. Thus, it is clear that the TPC was higher in the peel than in the 

pulp, while the total flavonoids content was determined in methanolic extracts of 

banana peel and pulp flour. The results showed that TFC was higher in banana peel 

(0.37 mg/ml) than in banana pulp (0.20 mg/ml). 

Key words: banana, catechol , quercetin, total flavonoids, total phenolics.

This research endeavor delved deeply into the potential protective efficacy of moringa extract in ameliorating renal impairments instigated by a high-fat dietary regimen in male rat models. The subjects were judiciously classified into six discrete cohorts, each comprising six individuals, with the subsequent allocation: Group 1 serving as the non-intervention control; Group 2 receiving a daily dose of 300 mg/kg body weight moringa extract (ME) spanning 8 weeks; Group 3 subjected to a sustained high-fat diet (HFD) throughout an 8-week interval; Group 4 exposed to a dual-modality involving an HFD and daily administration of 300 mg/kg bw ME for the identical duration; Group 5 subjected to the combined impact of an HFD and a daily 40 mg/kg bw dose of simvastatin (SIM) across 8 weeks; lastly, Group 6 subjected to a concurrent treatment approach involving an HFD, 300 mg/kg bw ME, and 40 mg/kg bw SIM, daily, over an 8-week period. Through an intricately orchestrated sequence of experiments, we embarked upon an expedition to unearth the Reno protective potential of moringa extract against dietary-induced nephrological impairment. Our findings offer an all-encompassing outlook on the synergy between dietary interventions and the innovative agents under scrutiny. This inquiry not only advances our comprehension of potential remedies for diet-associated renal adversities but also accentuates the emergence of moringa extract as a formidable contender in this domain. Our revelations illuminated that the application of a high-fat diet ushered in a substantial surge in malondialdehyde (MDA) levels, emblematic of heightened oxidative stress. This was concomitant with a marked depletion in glutathione (GSH), aggregate antioxidant capacity (TAC), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione reductase (GSH-Rd) levels. Conversely, the administration of moringa extract adeptly mitigated these adverse repercussions induced by the high-fat dietary regimen.