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Sadaf Ul Hassan,Sadaf Ahmad,Muhammad Asim Farid,Sohail Nadeem,Zulfiqar Ali,Rashid Abro,Aysha Mohyuddin,Muhammad Shahid Nazir,Murid Hussain,박영권 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-
Hydrodesulfurization is a common but less effective technique to remove sulfur content of oils due to severe operating conditions of temperature, pressure and cost. Oxidative desulfurization(ODS) is preferable due to low cost and mild operating conditions. Coupling of the extractive catalytic desulfurization with the ODS give rise to extractive catalytic oxidative desulfurization(ECODS), a more promising for the elimination of sulfur contents of fuel oil. Herein we present by polyoxometalate based hybrids, [H2TPP][K5BVW11O40]•2CH3CN•2H2O (1), [H2TPP]2[K3BVW11O40]•CH3CN•3H2O (2), and [H2TPP]3[KBVW11O40]•2CH3CN (3) for efficient ECODS of hazardous model fuel. These were synthesized by facile method and characterized by elemental analysis, inductive couple plasma, powder X-ray diffraction analysis, thermo-gravimetric/differential thermal analysis, fourier transform infrared, and UV–visible analysis. These polyoxometalate based hybrids contain cations [H2TPP]2+(organic) and [BVW11O40]7−(inorganic) with stoichiometric ratios(i.e., 1:1, 2:1, 3:1). The stoichiometry of these hybrids was also established by Job’s analysis which agreed well with the results of TG-DTA and elemental analyses. Interestingly, an increase in catalytic efficiency is observed with increase of organic cations. The maximum ∼99.5 % conversion of dibenzothiophene at 60 °C after 2 h has been achieved with hybrid 3 which could be employed up to ten cycles without a significant decrease in efficiency.
( Sadaf Mearaj ),( Ahmed Muhammad Ajaz ),( Joon Weon Choi ) 한국목재공학회 2022 한국목재공학회 학술발표논문집 Vol.2022 No.1
In this study soda lignin (SL) and acetylated soda lignin (ASL) were used to develop composites for food packaging applications. Both SL and ASL were mixed with PLA in different concentrations (5%, 10%, 15%, 20%, 25% and 30%) by a twin-screw extruder. PLA, PLA/SL and PLA/ASL composites were analyzed via Fourier transform infrared spectroscopy (FT-IR), SEM, tensile test, thermogravimetric analysis, UV-analysis, anti-oxidant, anti-microbial test and water contact angle (WCA). ASL reduced the size of lignin aggregates in the PLA matrix leading to improvement of tensile properties of all the PLA/ASL composites. The Tonset of ASL (296 ℃) was higher than SL (257 ℃) because of the higher thermal stability of ASL, all the PLA/ASL composites had higher Tonset than PLA/SL composites. PLA/SL10, PLA/SL15, PLA/SL20 showed UV-transmittance of less than 10% at 400nm demonstrating excellent UV-protection. The UV-transmittance of PLA/ASL composites was higher than PLA/SL composites. The result of the anti-oxidant test showed that the anti-oxidant properties of all the PLA/SL composites increased with increasing lignin content. PLA/SL10, PLA/SL15 and PLA/SL20 showed RSA (%) of around 30%, 58% and 86% respectively. This study demonstrates the potential of lignin for food packaging applications because of its excellent UV-shielding and anti-oxidant properties.
Global Oil Prices and Exchange Rate: Evidence from the Monetary Model
Sadaf ZAFAR,Muhammad Arshad KHAN 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.1
The study empirically examines the impact of monetary fundamentals along with global oil prices on the Pak-rupee exchange rate using the monthly data over 2001–2020. Employing the cointegrating vector autoregressive with exogenous variables (VARX) and vector error correction model with exogenous variables (VECMX), the study analyzes the impact of domestic monetary fundamentals while considering the foreign variables as weakly exogenous. In order to account for the structural breaks in the data, the Lagrange multiplier (LM) unit root test with two structural breaks has been used (Lee & Strazicich, 2003). The empirical results reveal that the domestic and foreign monetary variables significantly explain the exchange rate movements in Pakistan both in the long run and in the short run. The dynamic properties of the monetary model of exchange rate have been analyzed using the persistence profile analysis and generalized impulse response functions (GIRFs). The results reveal that the responses of shocks to domestic monetary fundamentals are consistent with the predictions of the monetary model of the exchange rate. Furthermore, being a net oil importer, a rise in global oil prices significantly depreciated the Pak-rupee exchange rate over the period of study. The global financial crisis (GFC) and pandemic (COVID-19) were also found to cause the Pak-rupee exchange rate depreciation.
Sadaf sajjad,Amjad Sultan,Muhammad Farhanullah Khan,Imam Din Keerio,Muhammad Samiullah Channa,Muhammad Faheem Akbar 국립중앙과학관 2021 Journal of Asia-Pacific Biodiversity Vol.14 No.2
Studies on the biology, life table parameters, and functional response of the green lacewing, Chrysoperlacarnea, were carried out on papaya mealybug, Paracoccus marginatus, under laboratory conditions. Thehighest larval survival rate (90.50%) was recorded on S. cerealella and then on P. marginatus (85%). Thehighest life table values of C. carnea, lx (0.91), R0 (106.45), T (50 days), Mx (263), and rm (0.10), wererecorded on S. cerealella, whereas doubling time (6.95) and death rate (0.11) were recorded onP. marginatus. The 1st instar of C. carnea to both nymphal instars of P. marginatus exhibited type IIfunctional response, whereas the 2nd and 3rd instars exhibited type III functional response. Predatorssuch as C. carnea with type III functional response to P. marginatus are recognized as an effectual biologicalcontrol agent as it can efficaciously establish and manage the P. marginatus population.
Agile Software Development Methodologies Evaluation Research Analysis: A review
Sadaf Niaz,Babar Hayat International Journal of Computer ScienceNetwork S 2024 International journal of computer science and netw Vol.24 No.5
In the quickly developing world, the idea of the conventional advancement needs to advance[1]. When applied to the advanced work environment, the conventional strategies give as much damage as they do great. Tragically, an absence of versatility in the customary techniques has prompted an inflexible work structure that is truly not viable with the present business. The Agile technique is, subsequently, a more adequate practice, in view of creating programming at a faster speed, while as yet looking after proficiency. The coordinated programming improvement strategies are concentrated in this paper. As per study results, Agile software development group needs solid client association; great light-footed task the executives' measures; item proprietor expands business esteem conveyed by group and need and draw in partners; great deft designing procedures or practices; and great advancements and advancement apparatuses[2]. This examination has suggestions for positive social change since associations that comprehend the basic components might have the option to improve project the executives' systems and money saving advantages prompting higher effectiveness, productivity, and efficiency hence profiting the board, representatives, and client. This survey paper incorporates various methodologies of Agile and their analysis.
Unveiling the Enigma through Deep Learning : Exploring Multifaceted Human Personality Traits
Sadaf Hussain,Tanweer Sohail,Rabia Afzaal,Muhammad Adnan Khan 한국차세대컴퓨팅학회 2023 한국차세대컴퓨팅학회 학술대회 Vol.2023 No.12
In response to the demand for impartial and precise personality testing, this study presents a unique multi-modal method for predicting personality traits in collaborative settings. Conventional approaches that depend on surveys frequently create biases, which has led to the investigation of raw, subconscious open writing as a rich source of personality information. This study uses deep learning algorithms in conjunction with the stream of consciousness storytelling approach to uncover personality traits by utilizing both textual and gestural data. We use BERT word embedding to improve contextual understanding and convolutional networks for the textual component. Compared to earlier methods, this methodology offers a more dependable way for text-based personality evaluation. Moreover, we present facial recognition as an extra factor for personality evaluation, providing a whole framework with a wide range of uses. We conducted studies in a collaborative setting to assess the effectiveness of our strategy, and we obtained encouraging findings. This multimodal method changes the way people collaborate and opens doors to a wide range of applications, such as mental health diagnosis, job interviews, and forensic investigations. A thorough grasp of personality features is expected to improve personalization and cooperation, leading to more efficient collaboration and improved decision-making.
( Sadaf Riaz ),( Zhenghong Sui ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.7
The nucleosomal organization of chromatin using histone proteins is a fundamental and ubiquitous feature of eukaryotic nuclei, with the major exception of dinoflagellates. Although a number of recent genomic and transcriptomic analyses have detected numerous histone genes in dinoflagellates, little is known about their expression. Here in, we aimed to investigate the expression pattern of histone genes under nutritional stress, and an attempt was made to detect histone expression at the protein level in Alexandrium pacificum. The presence of histones at the mRNA level was confirmed in this study by the amplification, cloning, and sequencing of 10 different genes. Relative expression profiling of these genes under different growth conditions was determined with real-time PCR and revealed considerable levels of histone transcription in nutritionally stressed cells. We were unable to detect the expression of histones at the protein level even after immunodetection and analysis using mass spectrometry, although a histone-like protein was detected as a major nuclear component. A. pacificum expresses multiple variants of histone, and protein sequences revealed both conservation and divergence with respect to other eukaryotes. We concluded that A. pacificum maintained an active transcription of histone genes within the cell, and enhanced expression of histone genes in nutritional stress strongly suggest that histones have functional significance in dinoflagellates, although expression at the protein level was below our current detection limits, which suggests a limited role of histones in DNA packaging. Finally, the plausible regulation of histone expression at the gene and protein levels in A. pacificum is discussed.