101,192 research outputs found
Maktabat Al Muthanna Baghdad Feb-May 1962
No full textOn the same date, Ali Al-Mansouri issued an official financial statement confirming that the Al-Khanji Foundation owed a total of 11.375.أصدر علي المنصوري بيانًا ماليًا رسميًا بتاريخ 25 نيسان 1962 يُفيد بأن مؤسسة الخانجي مدينة بمبلغ إجمالي قدره 11,375
Laser induced forward transfer (LIFT) of materials using 40 ps pulses-experimental and quantitative modelisation study
No full textIn this paper we report the results of experiments on LIFT performed using single pulses from a mode locked (40ps pulses), frequency doubled Nd:YAG laser (energy flux approximate to 13J/cm(2) at lambda = 532 nm). We studied the controlled transfer of thin films of different metallic materials to a receiving substrate. Optical and scanning electron microscopy (SEM) as well as Energy-dispersive X-ray spectroscopy (EDAX) analysis were performed, showing evidence of the production of micrometric scale patterns. One of our objectives is to investigate and develop possible applications of LIFT in jewellery industry. In order to understand the experimental results we developed a simple analytical model based on the Rankine-Hugoniot relations. Comparison between experimental and simulated results is presented
Qilādat al-jawāhir fī dhikr al-Ghawth al-Rifāʻī wa-atbāʻih al-akābir
No full textA book on Sufism on the Rifa'i way, in which the author collects virtues, conditions, dignity, sayings, behavior, method, and the realizations of the truth of Sheikh Ahmed Muhyi al-Din Abu al-Abbas al-Kabeer al-Rifa'i. Furthermore, the user talked about the widespread support he receives from his followers and the key aspects of his method
Antimicrobial Mechanisms and Effectiveness of Graphene and Graphene-Functionalized Biomaterials. A Scope Review
No full textBacterial infections represent nowadays the major reason of biomaterials implant failure, however, most of the available implantable materials do not hold antimicrobial properties, thus requiring antibiotic therapy once the infection occurs. The fast raising of antibiotic-resistant pathogens is making this approach as not more effective, leading to the only solution of device removal and causing devastating consequences for patients. Accordingly, there is a large research about alternative strategies based on the employment of materials holding intrinsic antibacterial properties in order to prevent infections. Between these new strategies, new technologies involving the use of carbon-based materials such as carbon nanotubes, fullerene, graphene and diamond-like carbon shown very promising results. In particular, graphene- and graphene-derived materials (GMs) demonstrated a broad range antibacterial activity toward bacteria, fungi and viruses. These antibacterial activities are attributed mainly to the direct physicochemical interaction between GMs and bacteria that cause a deadly deterioration of cellular components, principally proteins, lipids, and nucleic acids. In fact, GMs hold a high affinity to the membrane proteoglycans where they accumulate leading to membrane damages; similarly, after internalization they can interact with bacteria RNA/DNA hydrogen groups interrupting the replicative stage. Moreover, GMs can indirectly determine bacterial death by activating the inflammatory cascade due to active species generation after entering in the physiological environment. On the opposite, despite these bacteria-targeted activities, GMs have been successfully employed as pro-regenerative materials to favor tissue healing for different tissue engineering purposes. Taken into account these GMs biological properties, this review aims at explaining the antibacterial mechanisms underlying graphene as a promising material applicable in biomedical devices
Laser-induced forward transfer (LIFT) of material using ablation of thin films
No full textWe show the controlled transfer of thin films of different metallic materials to a receiving substrate. Single pulses from a mode locked (40ps pulse), frequency-doubled Nd:YAG laser (energy flux approximate to 13J/cm2 at 532nm) were used. Receiving substrates (metals, semiconductors or crystals) were placed parallel, at a close proximity to the thin film. Optical and scanning electron microscopy (SEM) as well as EDAX analysis were performed, showing evidence of the production of micrometric scale patterns. In particular, we studied the transfer of precious metal to metal/crystals for possible application in the jewellery industry
Ash-Shuo'a" the UNDIVIDED by Imam Omar Bin Abdulaziz Al-Boukhary in the Hanafi School
No full textThis research treating a study and investigation of the book titled "Ash-Shuo'a" THE UNDIVIDED by Imam Omar Bin Abdulaziz Al-Boukhary in the Hanafi school. It contains an Introduction and two chapters, the introduction displays the reasons for choosing the research title, it's important, the previous studies, its objectives, its methodology and the abstract. The first chapter: the theoretical contains two themes. The first identify the author, the second identify the investigated book. The second chapter: the investigation which includes the methodology followed in the investigation of manuscript, the photos and the investigation of the book. Finally, I have showed the most important results and recommendations. Also, I mentioned the index of resources and references used in study and investigation
Musical Instruments in Al-Jahiz
Get PDFفي كتابات الجاحظ، تناول أديب العرب الجاحظ قضايا الموسيقى والطرب والغناء. كان الجاحظ معروفًا بعلمه وأدبه، وكتب العديد من الأعمال التي تسلط الضوء على جوانب الحياة المترفة في المجتمع. كتب كتابًا بعنوان "أخلاق المغنين" وآخر بعنوان "المغنين والغناء والصنعة". في هذه الكتب، دافع الجاحظ عن الغناء كفن فني، ورأى أنه يمتلك قواعد وأسسًا علمية تشابه مع غيره من الفنون والآداب. كان يروج للغناء باعتباره متعة فنية. وعلى الرغم من انتمائه للمعتزلة، إلا أن الجاحظ كان مشجعًا للغناء ومغنين، وكتب عن أخلاقهم وفنونهم. وفي رسالته "القيان"، تناول الجاحظ تأثير بيوت القيان والقيان نفسهن في المجتمع الإسلامي، حيث أشار إلى الفسق والعشق والفجور الذي قد ينتج عن هذا التأثير. بشكل عام، تركت كتابات الجاحظ أثرًا مهمًا في فهمنا لثقافة الموسيقى والطرب والغناء في العصور القديمة.In his writings, the Arab author Al-Jahiz addressed issues related to music, Tarab (a genre of music), and singing. Al-Jahiz was known for his knowledge and literature, and he wrote numerous works that shed light on the luxurious aspects of society. He authored a book titled "Ethics of Singers" and another titled "Singers, Singing, and the Craft." In these books, Al-Jahiz defended singing as an artistic form and believed that it possessed scientific principles and foundations similar to other arts and literature. He promoted singing as a pleasurable art form. Despite his affiliation with the Mu\u27tazila school of thought, Al-Jahiz was a supporter of singing and singers, and he wrote about their ethics and arts. In his treatise "Al-Qiyan," Al-Jahiz discussed the influence of courtesans and their households on Islamic society, pointing to the immorality, passion, and vice that may result from this influence. Overall, Al-Jahiz\u27s writings have had a significant impact on our understanding of music, Tarab, and singing in ancient times
Theoretical Insights of History, Morality, and Society as the Literary Trio of the Author-Reader Relationship.
No full textThis paper attempts to examine the relationship between the author and the reader by polarizing history, morality, and society as a selected triad of theoretical interpretation. The study mainly focuses on the theoretical insights of these relationships in order to give proper clues for delving deep into the technical and thematic peculiarities of different literary genres. Therefore, it follows a qualitative approach to some fictional works, particularly novels, to demonstrate how the authorial perspective intersects with the reader’s ability to grasp the latent textual messages projected by authors in the course of the plots. The relationship between the author and the reader will be limited to three related topics, namely, history, morality, and society. As for history, the study sheds light on the postcolonial attributes of literature to reveal the function of liberal humanism in bridging the gap between the colonized people and the colonizers. Morality, on the other hand, will be discussed to explore the relative view of morality by authors and how the reader might conceptualize it according to his/her cultural background. Lastly, the discussion of society will be limited to the social customs and norms approached by authors to deliver a comprehensive depiction of the social reality in which the reader lives his/her true life
Radiation interaction parameters of commercial building glasses at energies of interest for potential nuclear accidents
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