Miracle-dz/UniFAR-FTUs huggingface dataset:
Kinetic study on ferulic acid production from banana stem waste via mechanical extraction

Banana is the tropical plants associated with lots of medicinal properties. It has been reported to be a potential source of phenolic compounds such as ferulic acid (FA). FA has excellent antioxidant properties higher than vitamin C and E. FA also have a wide range of biological activities, such as antioxidant activities and anti-microbial activities. This paper presents an experimental and kinetic study on ferulic acid (FA) production from banana stem waste (BSW) via mechanical extraction. The objective of this research is to determine the kinetic parameters in the ferulic acid production. The banana stem waste was randomly collected from the local banana plantation in Felda Lepar Hilir, Pahang. The banana stem juice was mechanically extracted by using sugarcane press machine (KR3176) and further analyzed in high performance liquid chromatography. The differential and integral method was applied to determine the kinetic parameter of the extraction process and the data obtained were fitted into the 0th, 1st and 2nd order of extraction process. Based on the results, the kinetic parameter and R2 value from were 0.05 and 0.93, respectively. It was determined that the 0th kinetic order fitted the reaction processes to best represent the mechanical extraction.
No place to hide : contemporary Scottish theatre and postcoloniality

The thesis is an examination of the connection between politics, culture and the contemporary practice of theatre in Scotland. It looks at Scottish history in the context of the nation's incorporation into the British Union and results in dramatic texts and performances. The reason for this is because Scotland presents an unusual picture of a postcolonial cultural space. The study uses the combination ofpostcolonial, cultural and performance theories to investigate this connection. Chapter One is devoted to the cultural sociology of Scotland. It examines the political and social contexts of the national culture, its components and how the interaction between politics and culture occurs. The chapter concludes by pointing out that this interaction frames the postcolonial framework of the country. Chapter Two examines how the remaking of cultural identity in Scotland is carried out within the postcolonial framework, and how this is reflected in the spheres of representation. The chapter proposes two models of identity conceptualisation; addresses the centrality of language and the roles it plays in the cultural remaking of the subjective national-self. The chapter also examines the nature and character of theatrical practice in Scotland, and concludes that while its activities occur within a postcolonial framework, Scottish theatre fits into the paradigm of a national-popular theatre. This chapter uses dramatic and performance theories to define popular theatre, its conceptual boundaries and functions. Chapter Three analyses four play texts, which are deemed to portray some aspects of the contingent origin of Scotland's postcolonial identity. These are plays modelled on history. The chapter later addresses the issue of genre, which is raised implicitly by the analysed plays. It concludes that in the wake of the performance of postcolonial subjectivity, postcolonial theatre usually breaks the genre barrier. Chapter Four continues the analysis of texts. A text that addresses the composite character of Scottish postcoloniality is examined. The thesis contests the attempts by the text to resituate the meaning of the 'composite' as a subject of class analysis. As a result of that attempt, there were tensions generated in the 'reception' of the performance of the text. The chapter concludes by stressing that the tension illustrates the character of postcolonial embodiment in performances. Chapter Five addresses another set of texts. These are the realist plays. The chapter looks at the meaning and practice of realism in the Scottish contexts. The chapter justifies realism as enabling a representation of national subjectivity from a perspective that other forms of theatre would have made less visible. The conclusion summarises the theoretical questions of the thesis. The thesis concludes by pointing out that theatre is one of the areas of representation where it is frequently shown that Scotland is a postcolonial cultural space.
Depression Tendency Detection of Weibo Users Based on Knowledge Graph

The detection of depression tendency of Weibo users has become a research hotspot today. This paper proposes a depression tendency detection method based on Knowledge Graph. The ultimate goal is to identify Weibo users with depression tendencies more accurately. This method filters the text on Weibo User Depression Detection Dataset(WU3D) and obtains the lexicon ontology of emotional words through manual annotation. After merging with the Chinese emotional lexicon ontology of Dalian University of Technology, the same data is removed. The Emotional Knowledge Graph is constructed by emotional words and the relation between them. The text features are extracted by Emotional Knowledge Graph and the pre-trained BERT+BiLSTM model separately. The extracted features are fused by concatenating. The results are obtained by Softmax. The experimental results show that the proposed method has better performance in Accuracy, Precision, Recall and F1 score.
Dynamic Load Modulation Power Amplifier Using Tunable Impedance Transformer

power amplifiers are of great practical interest for wireless technology frontends. The design of the microwave power amplifier with load modulation network is discussed. The original design of the tunable impedance transformer allows load modulating at the output of a transistor is proposed. The proposed tunable impedance transformer is based on J-invertor where the transformation impedance are varied by tuning capacitors. A load-pull procedure for a GaN HEMT transistor is used to achieve optimal impedance range providing high-efficiency operation. Results of analysis of the proposed design of the load modulated power amplifier that contain proposed tunable impedance transformer demonstrates that load modulation technique allows enabling high-efficiency operation over 60% in a wide output power dynamic range (7 dB) at 5 GHz operation frequency.
Magnetic Nanoparticles in Rotating Magnetic Fields

Diese Arbeit beschaftigt sich mit der Untersuchung der Dynamik suspendierter magnetischer Nanopartikel (MNP) in rotierenden Magnetfeldern (RMF) fur die Entwicklung eines homogenen Bioassays welches die direkte quantitative Detektion von Proteinen in einer Losung ermoglicht. Das entwickelte Messsystem detektiert mit Hilfe von Fluxgate-Magnetometern das Streufeld der durch das Magnetfeld induzierten Magnetisierung einer MNP-Probe. Die gradiometrische Sensoranordnung ermoglicht eine storungsfreie und empfindliche Detektion von verschiedenen MNP-Typen. Zur Analyse der Rotationsdynamik wird der Phasenwinkel zwischen dem rotierenden Magnetfeld und der Magnetisierung der MNP-Proben bestimmt, welcher in dem untersuchten Konzentrationsbereich eine von der Partikelkonzentration unabhangige Charakterisierung der MNP ermoglicht, wie die Bestimmung der hydrodynamischen Partikelgrose. Numerische Losungen der Fokker-Planck Gleichung sowie ein abgeleitetes empirisches Modell wurden zur Evaluierung der RMF-Messergebnisse sowie des Bioassays verwendet. Das Bioassaykonzept beruht auf einer Anderung des gemessenen Phasenwinkels, die durch die spezifische Anbindung der zu quantifizierenden Proteine an die Partikel hervorgerufen wird. Messungen mit verschieden geformten Nanopartikeln, bestehend aus Einzel- und Verbundkernen, lieferten eine sehr gute Ubereinstimmung mit den Simulationen. Die Ergebnisse wurden zusatzlich durch unabhangige Charakterisierungsmethoden bestatigt, wie der dynamische Lichtstreuung. Experimente mit spharischen Nanopartikeln, die aus Einzelkernen bestehen, durch den Brown'schen Relaxationsprozess dominiert werden und mit Protein G funktionalisiert sind, konnten eine quantitativen Proteindetektion mit dem RMF-Bioassaykonzept demonstrieren. Fur diesen Partikeltyp wurde ein Kerndurchmesser von 30 nm als Optimum ermittelt, da die Partikeldynamik noch signifikant durch kleine, an die Partikeloberflache anbindende Proteine beeinflusst wird sowie eine Dominanz der Brown'schen Relaxation sichergestellt ist. Die Anwendung von MNP mit Verbundkernen mit groseren hydrodynamischen Abmessungen sowie einer teilweisen Dominanz der Neel'schen Relaxation war weniger geeignet zur direkten Detektion von Proteinen, solange keine Quervernetzungseffekte ausgenutzt wurden. Schlieslich konnte mit Streptavidin-funktionalisierten MNP die prinzipielle quantitative Analyse von Proben, die den medizinisch relevanten Biomarker HER2 enthalten, demonstriert werden.
INFLUENCE FACTORS OF CULTURE OF INTELLIGENCE IN ORGANIZATIONS

RESUMO Organizations have recognized intelligence processes to deal with uncertainties, anticipate and better direct their decisions, aiming at greater competitiveness and sustainability. Among the influencing factors in these processes, culture, built by values, standards and behaviors, is strongly highlighted. In order to identify which characteristics are present in the culture of intelligence, we explore different elements covered in the literature. Studies point to cultural factors of leadership, communication, trust and collaboration, learning, and an orientation to the future and innovation as capable of influencing the intelligence processes. Aiming to identify factors of organizational culture that can influence intelligence processes in organizations, a SLR was carried out to form the construct “intelligence culture”, with validation by specialists, via Card Sorting and Delphi method. As a result, factors as leadership, appropriate communication and team awareness were identified. In terms of theoretical contribution, this study identifies the organizational culture factors which can influence the intelligence processes, uniting findings from the literature and the intelligence specialists’ opinions. It also proposes an instrument that can serve as a reference for future studies of culture factors and intelligence in organizations. In practical terms, organizations can diagnose and think strategies that develop the organizational culture in their processes.
Single layer films of functional molecules on noble metal surfaces visited by scanning tunneling microscopy and X-ray spectroscopy

The different self-assembled systems, (DES, 2H-TPP, tetraketone (PT) and tetramine (PPD)) were investigated as a function of temperature and surface coverage on close-packed, single crystal metal surfaces. The investigations were performed by means of STM, XPS and NEXAFS. The molecules undergo varyious chemical transitions, driven by high temperature annealing, such as deprotonaion, dehydrogenation and dehydration. Thus, the molecules reveal various molecular orientation and interactions according to the detached hydrogen atoms.
Organic geochemical investigation of sediments in the Japan Sea: tracking paleoceanographic and paleoclimatic changes since the mid-miocene

The mid- to late Miocene marks one of the last warm periods of the Neogene, before the descent in to the ice house climate of the late Pliocene and Pleistocene. The mid- to late Miocene climate was long overlooked, but receives increasingly more interest. This study used organic geochemical biomarker distributions and their isotopic signatures in sediment samples from the Japan Sea, recovered during IODP Expedition 346 and ODP Leg 127/128. It was the aim to reconstruct paleoceanographic and paleoclimatic changes over the last 18 Ma. Reconstructed sea surface temperatures revealed declining temperatures since the Mid-Miocene Climatic Optimum, possibly driven by a long-term decline in atmospheric CO2. Reconstructed pCO2 using alkenone paleobarometry, revealed a late Miocene decline from circa 520 μatm to 380 μatm. A decline in this range is required to trigger the onset of the late Miocene C4 plant expansion, which was also fully detected in the sedimentary record from the Japan Sea. Stable isotope analysis of n-alkanes (δD and δ13C) revealed an intensified summer monsoon from 5-3 Ma, which also led to a freshening of surface waters in the Japan Sea. Overall, the Japan Sea is a suitable study area for the late Miocene climate change.
Low-temperature Synthesis and Magnetostructural Transition in Antiferromagnetic, Refractory Nanoparticles: Chromium Nitride, CrN

Nanostructured chromium nitride (CrN), both a hard material and a high-melting compound that is used in the medical industry and for new energy-harvesting applications, was synthesized phase-pure for the first time via low-temperature solution synthesis in liquid ammonia. TEM analysis confirms the nanoscale character of CrN. The antiferromagnetic properties of the agglomerates of nanoparticles are discussed in comparison to literature data on the bulk materials. SQUID and DSC measurements show the transition from paramagnetic to antiferromagnetic at 258.5 K. In situ low-temperature X-ray diffraction patterns confirm the magnetostructural phase transition at this temperature, not seen before for nanoscale CrN. This structural distortion was calculated earlier to be driven by magnetic stress. The bottom-up synthesis of CrN allows for the production of nearly oxygen- and carbon-free and highly dispersed fine particles.
Detection of salts in soil using transversely excited atmospheric (TEA) carbon dioxide (CO2) laser-induced breakdown spectroscopy (LIBS) by the aid of a metal mesh

In this work, a nickel metal mesh was used to allow a direct detection of salt in soil sample by LIBS utilizing unique characteristics of a TEA CO2. The metal mesh is placed in the front of the soil sample to prevent the soil sample from blowing off upon focusing the high pulsed laser beam irradiation. LIBS apparatus used in this work is a TEA CO2 laser operated at wavelength of 10.6 μm with pulse energy and duration of 3J and 200 ns, respectively. The laser beam was focused using a ZnSe lens (f = 200 mm) onto soil sample after passing through the metal mesh. The emission spectrum from the induced plasma was detected using an optical multichannel analyzer (OMA) system consisting of a 0.32-m-focal length spectrograph with a grating of 1200 graves/mm and a 1024-channel photodiode detector array with a micro-channel plate intensifier. The soil sample used is a standard soil and ordinary soil containing several salts such as Ca, Mg at high concentration. The LIBS experiment was carried out at high pressure surrounding gas of 1 atmosphere. It was observed that by the aid of the metal mesh, strong breakdown gas plasma can be produced just after TEA CO2 laser irradiation on soil sample without significant sample blowing off. It was found that emission lines from salts, Ca (Ca II 393. 3 nm, Ca II 396.3 nm, Ca I 422.5 nm), and also other salts including Mg and Na can clearly be detected with strong emission intensity and narrow spectral width. This result implies that a TEA CO2 LIBS assisted by the metal mesh (metal mesh method) can be used for direct analysis several salts such as Ca, Mg, and Na in soil sample.
Fabrication and characterization of an eco-friendly antibacterial nanocomposite of galactomannan/ZnO by in situ chemical co-precipitation method

Abstract The present study concerns the methodology for the successful synthesis of galactomannan/ZnO (GM/ZnO) nanocomposite using an in situ chemical co-precipitation route utilizing galactomannan as a nanoreactor. The galactomannan was isolated using a hydrothermal extraction from mezquite (Prosopis spp.) seeds, in which the tree represents a valuable resource for the habitants of arid and semiarid zones of Mexico. The GM/ZnO was synthesized at room temperature. The effects of changing the galactomannan concentration in the nanocomposite over the antibacterial activity against Escherichia coli and Staphylococcus aureus were investigated by microdilution broth method. The GM/ZnO with greatest antibacterial activity was the one with the lowest amount of galactomannan and it was characterized. The ZnO nanoparticles that were observed by SEM and TEM, showed the formation of ZnO nanoparticles, with flake/petal shape and wurtzite structure. The synthesis of nanocomposite was confirmed by FTIR, with strong interactions between the primary alcohol of the galactomannan and ZnO. The thermal stability and decomposition was determined by TGA and DSC, finding a greater thermal stability and an increase of the degradation temperature. A mechanism for the synthesis of GM/ZnO, as well as the formation model of the ZnO with the assistance of the galactomannan are proposed.
Development and Validation of RP-HPLC Method for Simultaneous Estimation of Clonazepam and Propranolol Hydrochloride in Bulk and Pharmaceutical Dosage Forms

s: A simple, precise, accurate, reproducible RP-HPLC method was developed and validated for the simultaneous estimation of Clonazepam and Propranolol hydrochloride in bulk and in pharmaceutical dosage forms. Chromatographic separation was carried out on a Thermo-hypersil C8 column (250mm×4.6mm i.d,5μm) utilizing a mobile phase consisting of acetonitrile and 0.01M ammonium phosphate buffer (pH adjusted to 3.0 with ortho phosphoric acid) in the ratio of 60:40 v/v at a flow rate of 1ml/min with UV detection at 238nm. The retention times of Clonazepam and Propranolol hydrochloride were 3.362 min. and 2.524 min. respectively. The developed method was validated in terms of accuracy, precision, linearity, specificity, limit of detection and limit of quantification. The linear range was found to be 0.5-3.0μg/ml and 20-120μg/ml for Clonazepam and Propranolol hydrochloride respectively. The proposed method can be used for estimation of these drugs in combined dosage forms.
Characterization of Bacterial Hydrocarbon Degradation Potential in the Red Sea Through Metagenomic and Cultivation Methods

Characterization of Bacterial Hydrocarbon Degradation Potential in the Red Sea Through Metagenomic and Cultivation Methods Patrick Bianchi Prokaryotes are the main actors in biogeochemical cycles that are fundamental in global nutrient cycling. The characterization of microbial communities and isolates can enhance the comprehension of such cycles. Potentially novel biochemical processes can be discovered in particular environments with unique characteristics. The Red Sea can be considered as a unique natural laboratory due to its peculiar hydrology and physical features including temperature, salinity and water circulation. Moreover the Red Sea is subjected to hydrocarbon pollution by both anthropogenic and natural sources that select hydrocarbon degrading prokaryotes. Due to its unique features the Red Sea has the potential to host uncharacterized novel microorganisms with hydrocarbondegrading pathways. The focus of this thesis is on the characterization at the metagenomic level of the water column of the Red Sea and on the isolation and characterization of novel hydrocarbon-degrading species and genomes adapted to the unique environmental characteristics of the basin. The presence of metabolic genes responsible of both linear and aromatic hydrocarbon degradation has been evaluated from a metagenomic survey and a meta-analysis of already available datasets. In parallel, water column-based microcosms have been established with crude oil as the sole carbon source, with aim to
Measurement of Consumed Energy Due to the Two-Phase Pressure Drop in a Pulsed Semi-Industrial Column: Effect of Geometry

ABSTRACT This article deals with the evaluation of pressure drop and consumption of energy for a steady-state solvent extraction in a horizontal pulsed sieve-plate column, which are important for the design and optimization of the periodic-flow processes for industrial applications. In this study, the pressure drop and the position of loading points are investigated. Moreover, a mathematical evaluation on the energy consumption in the case of a pulsed flow is conducted, and besides the influence of pulsation intensity, the effect of geometrical parameters including the plate spacing and plate-free area is investigated as well. The results of this study are helpful for optimization of column geometry targeted to higher performance and lower energy consumption.
Orientation de spin par pompage optique dans les boîtes quantiques InAs/GaAs : effets nucléaires

L’etude et le controle du spin d’un porteur dans une boite quantique unique (BQ) est un element cle en vue du developpement de la spintronique et des composants de base necessaires au stockage et a la manipulation de l’information quantique (e. G. Pour la creation d’un ordinateur quantique). Dans cette these, on s’interesse donc aux spins electroniques et nucleaires, couples par interaction hyperfine, dans des BQs individuelles auto-organisees d’InAs/GaAs. Ce travail met plus particulierement en avant la dynamique de spin des electrons, des noyaux et du systeme couple. Une des motivations en est que, si l’on parvient a polariser fortement en spin les noyaux d’une boite quantique, il devient des lors imaginable de transferer un etat coherent electronique a un ensemble de noyaux pour en assurer le stockage. Pour ce faire, des experiences de pompage optique oriente par photoluminescence sont realisees. Un microscope confocal original resolu en temps, en temperature, en champ magnetique et en polarisation, destine a l’analyse par micro-photoluminescence de boites individuelles, est concu et developpe. Les mesures effectuees mettent d’une part en evidence le dephasage du spin electronique du aux fluctuations du champ nucleaire. Cependant, nous montrons que s’il est possible de supprimer l’effet de dephasage pour la composante longitudinale du spin electronique, il n’en est rien concernant la composante transverse. D’autre part, les conditions d’obtention d’une forte polarisation nucleaire equivalente a un champ effectif de plusieurs Teslas ont ete determinees et des effets originaux de bistabilite de la polarisation nucleaire sur nano-objets uniques sont decrits et modelises