Journal of engineering sciences and information technology最新文献_第6页

The Mechanical Behavior of Self-Compacting Concrete SCC Samples Locally Produce: السلوك الميكانيكي لعينات بيتونية مصنوعة من البيتون ذاتي التوضع SCC والمنتجة محلياً 个体采样的机械行为

Journal of engineering sciences and information technology Pub Date : 2022-03-28 DOI: 10.26389/ajsrp.r080821

Ammar Ryad Tawashi, Soleman Alamoudi Ammar Ryad Tawashi, Soleman Alamoudi

{"title":"The Mechanical Behavior of Self-Compacting Concrete SCC Samples Locally Produce: السلوك الميكانيكي لعينات بيتونية مصنوعة من البيتون ذاتي التوضع SCC والمنتجة محلياً","authors":"Ammar Ryad Tawashi, Soleman Alamoudi Ammar Ryad Tawashi, Soleman Alamoudi","doi":"10.26389/ajsrp.r080821","DOIUrl":"https://doi.org/10.26389/ajsrp.r080821","url":null,"abstract":" The main objectives of this research were to obtain a locally self-compacting concrete SCC, a modern concrete with a high property, that enables it to pass and flow through the structural elements and within the steel bars under its own weight only. which was produced and tested in the reinforced concrete laboratory, using local materials in its composition. The mixtures showed no separation or accumulation of the concrete mixture, which enables us to use it in the construction, restoration and structural strengthen at the lowest costs of production. Three concrete mixtures have been produced using three grades of cement (550, 500 and 450-475 kg/m3), using three types of chemical plasticizers, which has been coded as (3500, NN, and S) and two plasticizers ratios (2%, and 2.5%) of the cement weight, verified by the experiments of the fresh properties of the concrete mixture, determination of the cylindrical strength at the age of 28 days, and the measurement of the stress-strain(ϭ, ξ) for the tested samples. It was found that the self-compacting concrete mixture with cement grade (550kg/m3) using the chemical plasticizer (3500) at (2%) ratio of cement weight, gave the best properties at a water/cement (W/C) ratio of (0.39), with relatively high concrete strength.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87604604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study some specifications of copolymer (PLA-PEG): دراسة بعض الخصائص لمزائج البوليميرات المشتركة من بولي لاكتيك أسيد وبولي إتيلين غليكول (PLA-PEG) 研究聚苯乙烯共聚合物混合物的一些特性(PLA-PEG)

Journal of engineering sciences and information technology Pub Date : 2022-03-28 DOI: 10.26389/ajsrp.m020821

Gema Farzat Khlil, Husine Ahmed Baker, Ghazal Mohamad T Gema Farzat Khlil, Husine Ahmed Baker, Ghazal Moha

{"title":"Study some specifications of copolymer (PLA-PEG): دراسة بعض الخصائص لمزائج البوليميرات المشتركة من بولي لاكتيك أسيد وبولي إتيلين غليكول (PLA-PEG)","authors":"Gema Farzat Khlil, Husine Ahmed Baker, Ghazal Mohamad T Gema Farzat Khlil, Husine Ahmed Baker, Ghazal Moha","doi":"10.26389/ajsrp.m020821","DOIUrl":"https://doi.org/10.26389/ajsrp.m020821","url":null,"abstract":"This study about the blends of Poly Lactic Acid/ Poly Ethylene Glycol (PLA/PEG) 4000 copolymer at concentrations (9%,6%,3%,0%)) wt%) from (PEG) and (PLA) (5%) (w/w) by using casting solvent method to production films. The nonwoven nano fibrous mats were obtained by electro spinning of (PLA/PEG) solutions in chloroform, at weight ratios (70/30) (v/v), respectively. DSC is employed to measure the crystallinity difference between (PLA/PEG) blends and their nonwovens mats. the thermal properties (DSC) of (PLA/PEG) copolymer blends films and electrospun nano fiber mats such as (Tm) melting temperature, (Tg) glass transition temperature, (Tc) crystallization, Xc crystallinity rate and enthalpy . the FTIR test was done for all samples to figure the nature linking between (PLA) and (PEG),the results were that (6%) (w/w) of (PEG) was the optimized rate to apply Electrospinning method , data of DSC test defined that (Tg) and (Tm) were decreased, and that refer to occurrence physicist cross linking between the used substances (Completely miscible blend) when the electrospinning method was applied, also Xc for these nonwoven mats was decreased which has in turn an important effect on the speed of biodegradble for poly lactic acid (PLA). ","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74182846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving The Performance of the Image Captioning Systems Using a Pre- Classification Stage: تحسين أداء أنظمة وصف الصور باستخدام مرحلة التصنيف المسبق للصور 采用预先分类阶段改进图像说明系统的运作

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.l270721

Rasha Mohammed Mualla, Jafar Alkheir, Samer Sulaiman Rasha Mohammed Mualla, Jafar Alkheir, Samer Sulaim

{"title":"Improving The Performance of the Image Captioning Systems Using a Pre- Classification Stage: تحسين أداء أنظمة وصف الصور باستخدام مرحلة التصنيف المسبق للصور","authors":"Rasha Mohammed Mualla, Jafar Alkheir, Samer Sulaiman Rasha Mohammed Mualla, Jafar Alkheir, Samer Sulaim","doi":"10.26389/ajsrp.l270721","DOIUrl":"https://doi.org/10.26389/ajsrp.l270721","url":null,"abstract":" In this research, we introduce a novel image classification and captioning system by adding a classification layer before the image captioning models. The suggested approach consists of three main steps and inspired by the state- of- art that generating image captioning inside small sub- classes categories is better than the unclassified large dataset. In the first one, we have collected a dataset of two international datasets (MS- COCO and Flickr2k) including 10778 images in which 80% is used for training and 20% for validation. In the next step, dataset images have been classified into 11 classes (10 classes of indoor and outdoor categories and one class of \"Null\" category) and fed into a deep learning classifier. The classifier is re- trained again using our classes and learned to classify each image to the corresponding category. At the final step, each classified image is used as input of 11 pre- trained classified image captioning models, and the final captioning sentence is generated. The experiments show that adding the pre- classification step before the image captioning stage improves the performance significantly by (8.15% and 8.44%) and (12.7407% and 16.7048%) for Top- 1 and Top- 5 of English and Arabic systems respectively. The classification step achieves a true classification rate of 71.32% and 73.09% for English and Arabic systems respectively.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72755054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of cellulose acetate prepared from spinning combing waste: دراسة أسيتات السيللوز المحضر من عوادم تمشيط الغزل 醋酸纤维素的研究从纺精梳准备浪费:دراسةأسيتاتالسيللوزالمحضرمنعوادمتمشيطالغزل

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.s200621

Dema Esmail Shbib, Hussain Ahmad Bakr Dema Esmail Shbib, Hussain Ahmad Bakr

{"title":"Study of cellulose acetate prepared from spinning combing waste: دراسة أسيتات السيللوز المحضر من عوادم تمشيط الغزل","authors":"Dema Esmail Shbib, Hussain Ahmad Bakr Dema Esmail Shbib, Hussain Ahmad Bakr","doi":"10.26389/ajsrp.s200621","DOIUrl":"https://doi.org/10.26389/ajsrp.s200621","url":null,"abstract":"Acetate Cellulose (CA) is a natural polymer from cellulose used mainly in the manufacture of filters, films, and plastics. Natural polymers have been mainly used in industrial and biological fields due to their safety and low production costs, and biodegradability. The study focuses on preparing acetate polymer from spinning waste by different methods with acetic acid 80% at acetylation time (15- 30) minutes and 70% acetic acid at a acetylation time (120- 180) minutes. (Experimental values were obtained based on the speed of forming a network of cellulose acetate fibers prepared on the electrospinning apparatus). The prepared (CA) was tested with a nuclear magnetic resonance (NMR) test, the thermal behavior was determined by the DSC test. The research shows that high (DS) was obtained at concentration 70% and high acetylation time, while the (DS) was lower at 80% concentration and low acetylation time. From the DSC test, we find that both the glass transition and melting temperature decrease with increasing the (DS), while the crystallinity increases with decreasing the (DS).","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85312615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of Motives in choosing the formalist referencias in architecture: دور المحفزات في اختيار المرجعيات الشكلية في العمارة 动机的作用在架构:选择死板referenciasدورالمحفزاتفياختيارالمرجعياتالشكليةفيالعمارة

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.n240721

Heaven Mohamad Alsheekh Hamo, Safwat Ibrahim-Bacha, M. At Heaven Mohamad Alsheekh Hamo, Safwat Ibrahim-Bacha

{"title":"The role of Motives in choosing the formalist referencias in architecture: دور المحفزات في اختيار المرجعيات الشكلية في العمارة","authors":"Heaven Mohamad Alsheekh Hamo, Safwat Ibrahim-Bacha, M. At Heaven Mohamad Alsheekh Hamo, Safwat Ibrahim-Bacha","doi":"10.26389/ajsrp.n240721","DOIUrl":"https://doi.org/10.26389/ajsrp.n240721","url":null,"abstract":"The research seeks to identify the most important Motives that can help the designer to choose the appropriate formalist referencias for his design. And it tries to prove its importance and its impact on the formulation and formation of architecture and expressive images in it. And it occupies a Special position in the practice of architectural design, due to its connection to the stage of composition and the derivation of ideas within the design process. After examining and analyzing a variety of examples, And the research has suggested classifying them into five main Motives: (Motives belong to the designer – Motives belong to the project - Motives belong to the site - Motives belong to the society - other Motives). showing examples of each type of these Motives. In the end, the research concluded the multiplicity and diversity of Motives that help the designer choose his formalist referencias. And their role in bringing creative ideas. In addition to the importance of Motives that belong to the society (as vocabulary of architectural heritage), especially in Arab projects, where the percentage of its use reached 45% of the studied cases. The research also concluded that the designer can also take advantage of all Motives surrounding him, and depended on more than one referencia in his design. Through it, we can develop the design process, by formulating Curricula based on starting from these Motives as a strategy for creative architectural design. To choose the appropriate formalist referencia for the design problem faced by the designer, and to achieve the goals he seeks, In a manner consistent with the project data and requirements.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89628005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The feasibility of using glass facades for buildings in the State of Kuwait: جدوى استخدام الواجهات الزجاجية للمباني في دولة الكويت 在科威特建筑中使用建筑的可行性

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.n280721

Tariq Ibrahim Muhammad Al-Nukhailan Tariq Ibrahim Muhammad Al-Nukhailan

{"title":"The feasibility of using glass facades for buildings in the State of Kuwait: جدوى استخدام الواجهات الزجاجية للمباني في دولة الكويت","authors":"Tariq Ibrahim Muhammad Al-Nukhailan Tariq Ibrahim Muhammad Al-Nukhailan","doi":"10.26389/ajsrp.n280721","DOIUrl":"https://doi.org/10.26389/ajsrp.n280721","url":null,"abstract":"Recently, some press articles and opinions have come out that talk about aesthetic problems of glass facades. These problems are summed up in the excessive glare of these facades, raising the temperature in the external areas, and the effect of these facades by dust and storms that pass through the State of Kuwait, leaving a bad impact on them that loses their aesthetic value. I favored this research paper. To determine the extent to which these facades are suitable for the Kuwaiti climate, as there are towers with high-rise glass facades that occupy international ranks in terms of the elegance of the design and the aesthetics of the building. In the research, I wondered whether the process of transferring the use of these facades to our country was carried out without studying the climatic conditions of these countries. Or are there design errors in transportation, or is it a change in the climate, or are these facades suitable for the hot climate with some modifications to suit the climate? And I noticed through the research that most of the research tended to study the modern uses of facade glass in terms of providing comfort to the user and reducing energy. Through its content, the research dealt with a case study of some existing models of towers with glass facades in Kuwait, and conducting analyzes of them and studying the research related to them.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75518545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison The Performance of The Recurrent Neural Network in Reducing Training Parameters for Convolution Neural Network: مقارنة أداء الشبكات العصبونية التكرارية في تخفيض بارامترات التدريب لشبكات التلافيف العصبية 对神经疏导网络培训参数方面的重复神经网性能的比较

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.b030821

Mohamad Ahmad Mounir Batikh, Mohamad Ayman Nael, Amer Bous Mohamad Ahmad Mounir Batikh, Mohamad Ayman Nael, A

{"title":"Comparison The Performance of The Recurrent Neural Network in Reducing Training Parameters for Convolution Neural Network: مقارنة أداء الشبكات العصبونية التكرارية في تخفيض بارامترات التدريب لشبكات التلافيف العصبية","authors":"Mohamad Ahmad Mounir Batikh, Mohamad Ayman Nael, Amer Bous Mohamad Ahmad Mounir Batikh, Mohamad Ayman Nael, A","doi":"10.26389/ajsrp.b030821","DOIUrl":"https://doi.org/10.26389/ajsrp.b030821","url":null,"abstract":"The study aims to reduce the number of parameters in the Convolution Neural Network (CNN), which is one of the best techniques used to extract and categorize behavioral features in video files. These networks have a very big size and a large number of parameters which distributed in the deep layers, especially in the last layers that responsible for classification, the values of the parameters are modified at each stage of network training, which consume memory too much, and its need for a very large memory space. In this research we work to reduce the number of parameters through using lightweight Convolution Neural Network (LWCNN), we choose Alex Net network in our research, but we made some modification on it, we decrease the number of filters in convolution layer, and we replace the last layers in the network with one of the most important types of Recurrent Neural Network (RNN). We use each of Long Short Term Memory (LSTM), and Gated Recurrent Unit (GRU). The work was tested during the research period on a dataset containing 960(videos) for normal children and children with autism spectrum, which were taken in Center for psychosocial support for people with special needs. And the experimental results proved the significant decrease in the number of parameters in the system with lightweight networks after linking them with recurrent networks with 84%, as well as the recurrent network with long reliability (LSTM) gave better results than the Gated recurrent unit (GRU) in accuracy and the loss value.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76089351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studying the effect of using A1₂O₃/H₂O nanofluid with a polymeric nature in the performance of heat exchanger: دراسة تأثير استخدام مائع نانومتري A1₂O₃/H₂O ذو طبيعة بوليميرية في أداء المبادل الحراري

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.m280721

Tammam Mohammad Alhaddo, Bassam Alkairawan, Ibrahim Algho Tammam Mohammad Alhaddo, Bassam Alkairawan, Ibrahi

{"title":"Studying the effect of using A1₂O₃/H₂O nanofluid with a polymeric nature in the performance of heat exchanger: دراسة تأثير استخدام مائع نانومتري A1₂O₃/H₂O ذو طبيعة بوليميرية في أداء المبادل الحراري","authors":"Tammam Mohammad Alhaddo, Bassam Alkairawan, Ibrahim Algho Tammam Mohammad Alhaddo, Bassam Alkairawan, Ibrahi","doi":"10.26389/ajsrp.m280721","DOIUrl":"https://doi.org/10.26389/ajsrp.m280721","url":null,"abstract":"In this experimental study, A1₂O₃ nanoparticles with an average diameter of 50nm were used to prepare three volume concentrationfrom Heat transfer nanofluid A1₂O₃/H₂O by two step method. The dimensions of A1₂O₃ were described by Atomic Force Microscopy (AFM). The stability of the nanoparticles is evaluated by Zeta potential and transmission electron microscopy (TEM). Polyacrylamide (PAAM) was used as a material to help disperse and stabilize nanoparticles. The thermal conductivity of nanofluid was measured by a device which works by the hot wire method. The results showed an increase in the thermal conductivity with increasing concentration of nanoparticles, where the improvement percentage was 5.3% at 0.25% vol and 60°C compared with the base liquid. The nanofluid tested as a hot liquid in Double- pipe heat exchanger, The results showed an improvement in the thermal indicators of the exchanger, such as the efficiency, the total heat transfer coefficient, the amount of heat exchanged, and heat transfer units. The heat exchanger showed high efficiency with an increase in the concentration of nanoparticles and the pumping capacity, as the highest value of the total performance coefficient reached 1.186, despite the increase in the friction factor with the increase in the concentration of A1₂O₃ nanoparticles.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86683713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon concrete- the creative building material- its properties and performance indicators in strengthening the elements of structures: الخرسانة الكربونية – مادة البناء الإبداعية – خصائصها ومؤشرات أدائها في تدعيم عناصر المنشآت

Journal of engineering sciences and information technology Pub Date : 2022-03-27 DOI: 10.26389/ajsrp.r280721

Zuhair Amer Zuhair Amer

{"title":"Carbon concrete- the creative building material- its properties and performance indicators in strengthening the elements of structures: الخرسانة الكربونية – مادة البناء الإبداعية – خصائصها ومؤشرات أدائها في تدعيم عناصر المنشآت","authors":"Zuhair Amer Zuhair Amer","doi":"10.26389/ajsrp.r280721","DOIUrl":"https://doi.org/10.26389/ajsrp.r280721","url":null,"abstract":"Construction and restoration operations have developed rapidly since the beginning of this century. This development coincided with the trend of towards developing and discovering new building materials that meet the aspirations and needs of those interested across all engineering fields. One of the most important building materials currently being developed is carbon concrete, in which carbon is used for reinforcement instead of steel, which has been the material in use until today. Due to the many advantages of using carbon concrete whether in building new structures or in repairing, strengthening and consolidation of existing buildings, this innovative material will replace conventional reinforced concrete in the near future. This study aims to shed light on carbon concrete and present the latest findings of scientific research on this material and its production and use techniques, whether in modern buildings under construction or in existing buildings for the purpose of repair and rehabilitation. It also aims in its experimental part to study the effects of reinforcement using carbon concrete on the behavior of implemented concrete elements (for example, column elements) by changing many parameters. This research paper presents the characteristics and components of carbon concrete, its manufacturing methods and areas of use, in addition to the advantages and disadvantages of the new carbon concrete through a brief overview in order to introduce this creative building material in the Arab sector and encourage its use as an alternative to reinforced concrete. However, there is still an urgent need for scientific research into the details of carbon concrete. Only then can standardized and complete concepts be presented for their practical use and, above all, the code version to be followed when utilizing them.","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90366602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solving the lignin waste crisis: Utilization of lignin to produce value- added antioxidant agents: حل أزمة نفايات اللجنين: استخدام اللجنين لإنتاج مضادات أكسدة ذات قيمة مضافة

Journal of engineering sciences and information technology Pub Date : 2021-12-30 DOI: 10.26389/ajsrp.l210421

Feras Mosleh Almowalad Feras Mosleh Almowalad

{"title":"Solving the lignin waste crisis: Utilization of lignin to produce value- added antioxidant agents: حل أزمة نفايات اللجنين: استخدام اللجنين لإنتاج مضادات أكسدة ذات قيمة مضافة","authors":"Feras Mosleh Almowalad Feras Mosleh Almowalad","doi":"10.26389/ajsrp.l210421","DOIUrl":"https://doi.org/10.26389/ajsrp.l210421","url":null,"abstract":" Lignin is a major component of biomass that is considered a huge energy and carbon reserve. Aside from being the second most abundant polymer in nature, it is a major by- product of pulping, paper and other forestry- based industries with about 70 million tons per year. Due to it being highly biologically recalcitrant, lignin is underutilized and considered a waste product that is solely incinerated for power generation. Establishment of a market for lignin- based, value- added chemicals was a necessity. Because of its renewable nature, availability, and richness in phenolic component, however, it is considered as an attractive alternative for antioxidant activity. In our research, all types of extracted lignin exhibited a value ranging from 2.21 to 11.47 on the AAI assay suggesting high antioxidant activity. Furthermore, special chemical structures such as hydrogen atoms, double bonds between side chain carbons, as well as the presence of methoxyl groups can increase antioxidant activity by 2- 3 folds via means of radical scavenging. Finally, lignin extracted at higher temperature (~95C and greater) exhibited higher ORAC values compared to lignin extracted at lower temperature; ORAC values of 1072.32 to 3119.68 versus 1741.72 to 1745.11, respectively. This paper is going to shed more light on the lignin antioxidant properties, where it stems from, what affects it, as well as future directions and possible interdisciplinary potential improvement. ","PeriodicalId":15747,"journal":{"name":"Journal of engineering sciences and information technology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82183502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0