431 research outputs found
Fabrication and characterization of nanostructured ceramic thin films from single source and mixed molecular precursors / Muhammad Ali Ehsan
No full textThis work describes some general procedures for the preparation and characterization of heterobimetallic complexes [Fe2Ti4(μ-O)6(TFA)8(THF)6] (1), [Co2Ti(μ3-O)(TFA)6(THF)3] (2) and a series of metal dithiocarbamate [Bi(S2CNEt2)3]2 (3), [In(S2CNCy2)3]•2py (4), [In(S2CN(iPr)2)3]•1.5py (5), [In(S2CPip)3]•0.5py (6), [In(S2CNBzMe)3] (7), [Ag4{S2CNEt2}3(py)2]n·nNO3·2nH2O (8), [Cd(S2CNCy2)2(py)] (9), [Zn(S2CNCy2)2(py)] (10), [Zn(S2CNBzMe)2(py)] (11), [Pd(S2CNBz2)2]•py (12) [Pd(S2CNCy2)2]•py (13), [Pd(S2CNnHex2)2] (14), [Pd(S2CNCyMe)2] (15) and their disposal for the growth of thin films of ceramic oxide composites and metal sulphides. The physical properties of these complexes have been studied by means of fusion point determination, microanalysis, Fourier transform infrared spectrophotometry (FTIR) and proton nuclear magnetic resonance (1H-NMR) spectroscopy, X-ray single crystal and thermogravimetric and derivative thermogravimetric (TG/DTG) analyses. Thermogravimetric studies prove that all the complexes (1)-(15) undergo facile thermal decomposition at relatively low temperature and are well suited single source precursors for the fabrication of ceramic oxide and sulphide thin films by aerosol assisted chemical vapour deposition. The particle size, phases and crystallinity of the deposited films were determined by X-ray power diffraction (XRPD) while scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectrometry were used for investigating the surface morphologies, crystallite size, shape and elemental compositions.
XRPD and EDX analyses revealed the formation of impurity free composite oxides Fe2TiO5-TiO2 and CoTiO3-CoO films at relatively low temperature of 500 °C on glass substrate from precursors (1) and (2) respectively. SEM results showed that fabricated films are crack free, crystalline and possess nanosized features with clear boundaries and architectures.
Single source metal dithiocarbamate precursors (3), (4)-(7), (8), (9), (10)-(11) and (12)-(15) have been found suitable for deposition of Bi2S3, β-In2S3, Ag2S, CdS, ZnS and PdS thin films on fluorine doped tin oxide ( FTO) coated conducting glass substrate at temperature range of 300-500 °C and the energy bandgaps (Eg) of the Bi2S3, β-In2S3, Ag2S, CdS, ZnS and PdS thin films determined from UV-Vis spectrophotometry are valued at 1.80, 2.20, 1.05, 2.40, 3.40 and 1.70 eV, respectively, indicating the direct band gap nature of the metal sulphide materials.
The photoelectrochemical (PEC) characteristics of the Bi2S3, β-In2S3, CdS, ZnS, PdS and Ag2S thin films electrodes measured from photocurrent potential plot recorded under Air Mass 1.5G illuminations exhibit anodic photocurrent densities of 1.90, 1.25, 1.20, 8.0×10-3 and 4.0×10-3 , 0.22, mA/cm2 at 0.23 and 0.0 V vs. Ag/AgCl, respectively. The photoelectrochemical performances indicate that the newly synthesised precursors are highly advantageous in fabricating metal sulphide electrodes for solar energy harvesting and optoelectronic application
Phytochemical and pharmacological attributes of piperine: A bioactive ingredient of black pepper
No full textPlants are vital for the wellbeing of humankind in a variety of ways. Some plant extracts contain antimicrobial properties that can treat different pathogens. Most of the world's population relies on medicinal plants and natural products for their primary health care needs. Therefore, there is a growing interest in natural products, medicinal plants, and traditional medicine along with a desire to design and develop novel plant-based pharmaceuticals. These plant-based pharmaceuticals may address the concerns of reduced efficacy of synthetic antibiotics due to the emergence of drug-resistant pathogens. In this regard, some plant extracts from black pepper (Piper nigrum) with antimicrobial properties, including piperine, have the potential to be used as natural dietary supplements together with modern therapeutic approaches. This review highlights possible applications of piperine as the active compound in the fields of rational drug design and discovery, pharmaceutical chemistry, and biomedicine. We discuss different extraction methods and pharmacological effects of the analyzed substance to pave the way for further research strategies and perspectives towards the development of novel herbal products for better healthcare solutions
Intumescence behaviour of bottom ash based geopolymer mortar through microwave irradiation – As affected by alkali activation
No full textEntrepreneurship : Krep-Krep Enterprise / Muhammad Firdaus Zabidi ... [et al.]
No full textKREP-KREP ENTERPRISE is the company that will establish by five members which is consists of Muhammad Firdaus b Zabidi, Mohd Nur Azry b Zakaria, Mohd Syazani b Ali Mohtar, Ahmad Farid b Zainal, Muhammad Faris Faruqi b Kamarul Zaman. We named our company as KREP-KREP which came from the word “kerepek” in malay. As you can expect from our company name, we are making business of supplying and selling three kind of chips that is potato, banana and yam.
We get the inspiration to making this business when we see this business have big prospects in making profit. Before we are doing this business we have made a survey from the previous established company such as Mister Potato. This company had been established longtime ago and along the progression of this company there is no other new company are following their step. So we see this situation as an opportunity to us to be a new company in supply and selling chips.To make our business run more smoothly, our company which is located at Lot 3028, Jalan Surau Sebaya, Bukit Kapar, 42200 Kapar, Klang, Selangor Darul Ehsan need RM 200,000 loan from the bank as our additional capital. We hope that our company will be success in the future and be the best company in supplying and selling chips products not only in the east coast but in the whole Malaysia. We also were hoping to become supplier for most country at asean
Characterization of the passive layer on ferrite and austenite phases of super duplex stainless steel
No full textIn this study, we report on a combined microscopic, analytical and electrochemical characterization of the nanoscopic passive layer on a tungsten‑molybdenum-containing super duplex stainless steel. We used scanning transmission electron microscopy/energy dispersive X-ray spectroscopy, scanning Kelvin probe force microscopy, scanning tunneling spectroscopy, and Mott–Schottky electrochemical impedance spectroscopy analysis to correlate the local chemical composition and electronic properties of passive layers on austenite and ferrite phases. The passive layer on the ferrite phase contains a higher amount of Mo, W, and Cr, which accommodates a higher nobility of ferrite and a higher local energy of the band gap compared to those on the austenite. The two aforementioned phases exhibit a different composition and semi-conductive properties of their passive layers leading to dissimilar local corrosion susceptibility. These findings are of pivotal importance in further studies of austenite and ferrite phase resolved corrosion resistance of duplex stainless steel demanding a dedicated alloying strategy.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.(OLD) MSE-6QN/Zandbergen La
The 'Ulama' of Iran in the 19th century hagiographical literature
No full textThis study is concerned with the biographies of the Shi'i 'ulama'in Iran during the 19th century, who played a major role in the emergence of the Shi'i hierocracy as religious executors of state affairs. Chapter I: provides an overview of the relations between state and 'Ulamd' in the Safavid period and traces the development of usuli doctrine as the dominant school of ShT'i fiqh (jurisprudence). Chapters II, III and IV: focus on the lives and works of three groups of the mujtahids divided according to their generation. The first generation comprises the students of Bihbihani, who were concerned primarly with the consolidation of the Usuli school. The second generation was responsible for the formulation of the concept of wildyat al-faqih. Finally the third generation emphasised the concept of the role of the marja' al taqlid, thus paving the way for the mujtahids to intervene in affairs of state
Crocker Range National Park, Sabah, as a refuge for Borneo’s montane herpetofauna
No full textCrocker Range National Park in Sabah (East Malaysia), northern Borneo, is an exceptional area for herpetological diversity. Inventories of the Park are incomplete, but show high diversity, as well as regional endemicity shared with the adjacent and more well-known Gunung Kinabalu National Park. The montane ecosystem of the Range offers refuge for a number of rare herpetofaunal taxa, including Stoliczkia borneensis, Rhabdophis murudensis, Oligodon everetti, Philautus bunitus, Ansonia anotis, Sphenomorphus aesculeticola, and undescribed species of squamates of the genera Sphenomorphus and Gongylosoma. The 59 species of amphibians and 45 species of reptiles now recorded from the Range represent 39 and 16.2 per cent of the total Bornean amphibian and reptile fauna, respectively. The high levels of deforestation of the surrounding regions of Borneo, particularly lowland rainforests, highten the importance of protection of primary forests of northern Borneo’s Crocker Range
Dataset for Real and Virtual Backgrounds of Video Calls
No full textVideo conferencing applications play an important role in our day-to-day life. They enable people to meet, work, and collaborate remotely, especially in circumstances where physical meetings are not possible (e.g., pandemic scenarios, long distances, etc.). However, such applications might invade people's privacy such as disclosing their sensitive information. In this dataset, we recorded different video conferencing with diverse real and virtual backgrounds, changing subjects, lighting, and so on.
If you want to use these datasets for non-commercial purposes, please cite the following papers:
@article{nowroozi2020survey,
title={A survey of machine learning techniques in adversarial image forensics},
author={Nowroozi, Ehsan and Dehghantanha, Ali and Parizi, Reza M and Choo, Kim-Kwang Raymond},
journal={Computers \& Security},
pages={102092},
year={2020},
publisher={Elsevier}
}
@article{DBLP:journals/corr/abs-2106-15130,
author = {Mauro Conti and
Simone Milani and
Ehsan Nowroozi and
Gabriele Orazi},
title = {Do Not Deceive Your Employer with a Virtual Background: {A} Video
Conferencing Manipulation-Detection System},
journal = {CoRR},
volume = {abs/2106.15130},
year = {2021},
url = {https://arxiv.org/abs/2106.15130},
eprinttype = {arXiv},
eprint = {2106.15130},
timestamp = {Mon, 05 Jul 2021 15:15:50 +0200},
biburl = {https://dblp.org/rec/journals/corr/abs-2106-15130.bib},
bibsource = {dblp computer science bibliography, https://dblp.org}
Design and construction of Zana robot for modeling human player in rock-paper-scissors game using multilayer perceptron, radial basis functions and Markov algorithms
No full textAbstract: In this paper, the implementation of artificial neural networks (multilayer perceptron [MLP] and radial base functions [RBF]) and the upgraded Markov chain model have been studied and performed to identify the human behavior patterns during rock, paper, and scissors game. The main motivation of this research is the design and construction of an intelligent robot with the ability to defeat a human opponent. MATLAB software has been used to implement intelligent algorithms. After implementing the algorithms, their effectiveness in detecting human behavior pattern has been investigated. To ensure the ideal performance of the implemented model, each player played with the desired algorithms in three different stages. The results showed that the percentage of winning computer with MLP and RBF neural networks and upgraded Markov model, on average in men and women is 59%, 76.66%, and 75%, respectively. Obtained results clearly indicate a very good performance of the RBF neural network and the upgraded Markov model in the mental modeling of the human opponent in the game of rock, paper, and scissors. In the end, the designed game has been employed in both hardware and software which include the Zana intelligent robot and a digital version with a graphical user interface design on the stand. To the best knowledge of the authors, the precision of novel presented method for determining human behavior patterns was the highest precision among all of the previous studies
عبد المجید سالک کی خاکہ نگاری: تعارف اور فن: ABDUL MAJEED SALIK’S SKETCH WRITING: INTRODUCTION AND ART
No full textPoets, writers and intellectuals are sensitive and conscious members of any society. These people are devoted to the spirit of love, peace, progress, prosperity and goodwill. They try to create awareness in the society through their creations. Many great poets, writers and intellectuals were born in the Indian subcontinent. Among them, great people like Mirza Asadullah Ghalib, Allama Muhammad Iqbal, Muhammad Hussain Azad, Abul Kalam Azad, Agha Shorush Ka Shamiri, Ghulam Rasool Mehr, Hasrat Mohani, Maulvi Abdul Haq, Chaudhry Afzal Haq, Maulana Zafar Ali Khan and Ehsan Danish. Included. An important name among these people is Abdul Majeed Salik, who is a well-known poet and writer
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