Miracle-dz/UniFAR-FTUs huggingface dataset:
Structure stability of vitamin A acetate in heating

The heat-induced degeneration products of vitamin A acetate and the plausible mechanism were analyzed under oxygen-free and light-free condition that vitamin A acetate was processed,stored and used.GPC、HPLC-DAD and LC-MS results showed that two reactions,namely isomerization and Diels-Alder reaction,were predominated in this process.The activation energy of the Diels-Alder reaction between various vitamin A acetate isomers was calculated with the transition state theory.Results showed that the dimers were mainly produced by the Diels-Alder reaction between trans-vitamin A acetate(act as diene) and cis-vitamin A acetate(act as dienophile),where cis-vitamin A acetate was the isomerization product of trans-vitamin A acetate.The most probable structures of the six dimers were presented by comparing the energy change in perturbational molecular orbital theory for different regioselectivity of the Diels-Alder reaction.
Extraction of Total Flavonoid from Herba Epimedii Maxim Using Alkali Solution

A new method for the extraction of total flaconoid from Herba Epimedii Maxim was developed in this study.The extraction solvent,extraction duration,times of extraction,concentration ratio and acid dosage used for precipitation were investigated using the extraction yield of icariin and total flavonoid as considering indices. The extraction process was optimized as follows: using 10 times amount( compare to sample) of 0. 1% NaOH solvent,boiling for 2 times and 1h every time. The filtrate was concentrated to the ratio of 1∶ 4 for the ratio of solid to solvent. The pH of the concentrated filtrate was then adjusted to 2 by HCl followed by precipitation for 36 h and vacuum filtration or centrifugation of precipitate to afford flavonoid with high concentration. The developed method was stable,easy to operate and suitable for industrial production.
Importance of microtubule and F-actin architecture for proper chromosome alignment in mouse oocyte

Meiosis produces male and female haploid gametes. Female meiosis is highly prone to chromosome segregation errors. Indeed, at least 10 % of human pregnancies produce aneuploid embryos, the errors leading to aneuploidy almost always occurring in the oocyte. Understanding the origin of these errors is therefore a major issue. During my PhD, I studied chromosome alignment and segregation in mouse oocytes from two different angles:1) In eukaryotes, the structure orchestrating chromosome alignment and segregation is the microtubule spindle. Whereas mitotic spindles assemble from two centrosomes that are major microtubule organizing centers (MTOCs) containing centrioles, meiotic spindles in oocytes lack centrioles. Thus, oocytes use alternative ways to assemble and position their spindle. In mouse oocytes, the spindle is not assembled by centrosomes but spindle microtubules are nucleated from multiple acentriolar MTOCs. I used the kinesin-14 HSET as a tool to shift meiotic spindle assembly towards a mitotic mode. This induces severe chromosome misalignment. Thus, the unique mechanism of meiotic spindle assembly is essential to prevent chromosome misalignment and production of aneuploidy gametes.2) In mitosis, centrosomes nucleate astral microtubules. Oocytes lack astral microtubules and thus meiotic spindle positioning depends only on F-actin. In particular, it relies on the nucleation of a cortical actin thickening leading to a decrease in cortical tension. We used two different tools that nucleate de novo an actin thickening to artificially decrease cortical tension in mouse oocytes, creating extra-soft oocytes. Chromosome alignment is severely impaired in these extra-soft oocytes. It relies on myosin II deregulation since decreasing myosin II activity in extra-soft oocytes rescues chromosome alignment. Aberrant low cortical tension could thus generate aneuploidy in oocytes, contributing to the very high aneuploidy rate measured in female meiosis.
Evaluation of Hybrid Dedicated/Ambient EH for AF Relaying

In this letter, three hybrid simultaneous wireless information and power transfer (SWIPT)/ambient energy harvesting (EH) structures are analyzed for a relay node harvesting power from both a source node and the ambient environment. The EH structures are based on an ambient energy channel estimation power splitting scheme (ACEPS), an ambient energy data transmission power splitting scheme (ADTPS), and an ambient energy combination power splitting scheme (ACPS). Closed-form expressions of the achievable rates are derived. Numerical results are demonstrated to obtain the best proportion from these different schemes.
Conditional Hypothesis Testing

When testing multiple hypotheses, conventional techniques used for reducing false positives require all tests to be pre-specified and do not account for correlation between p-values. This makes them incompatible with sequential modelling techniques, where models are built one-at-a-time and future models benefit from the insight of previous testing. We propose here a technique for adjusting future tests to in-corporate prior information and show that this reduces to replacing the likelihood function with the conditional likelihood. A numerical algorithm is also developed that uses Monte Carlo integration to efficiently compute conditional acceptance regions from conditional sizes.
An empirical study on employees’ theft behavior in insurance industry

It is highly deplorable that every year, theft behavior among employees of insurance industry is growing throughout the world. A very significant sources of contraction (despite many costly technological and widespread security measures) which needs to be addressed and prevented. Employee and agent theft cannot be ignored as it causes significant losses to employers. This study investigates the workplace factors that affect the insurance employee and agent theft behavior. Although identifying theft is difficult, this study will help employers to further understand employees’ theft behavior. This study was conducted in two service small and medium organizations (two branches of insurance companies) in ALBORZ’s capital city, KARAJ. Data has been collected via questionnaire from 30 employees and agents consisting employees and supervisors of branches and agencies. According to the results, it must be acknowledged that compensation, organizational justice, internal control systems, penalties and personal characteristics were associated with employees' theft behavior, it is despite the fact that, no effect could be assumed for organizational ethics and requirement in this case. Nevertheless, poor financial status cannot be considered as the driving factor in pushing employees to steal property as well as increasing their theft behavior. As mentioned earlier, the purpose of this study was to determine the factors contributing to employees’ theft (insurance employees and agencies) behavior in insurance organizations in Karaj.
Pilea cadierei Gagnep.et Guill's Growth and Accumulation Under Single and Combined Pollution of Cd and Pb

Using the method of pot culture,Pilea cadierei Gagnep.et Guill was treated under the stress with single and combined concentrations of Cd and Pb.The growth changes as well as accumulation and transference of Cd and Pb were studied.The results showed the that with the increasing of concentration of Cd and Pb respectively in single treatments,the aboveground dry weight,root dry weight and root tolerance index of P.cadierei Gagnep.et Guill were all first increased and then decreased.The biomass of P.cadierei Gagnep.et Guill under different concentrations of combined treatment by Cd and Pb were lower than that of CK,and root tolerance index gradually decreased.The contents of Cd and Pb in roots,stems and leaves went up with the increasing of concentrations of the heavy metals in all treatments,and the accumulated amount in roots was higher than that in stems and leaves.Under combined treatment,the contents of Cd and Pb in different organs of P.cadierei Gagnep.et Guill were more than that under single treatments and the transference amount of Pb in aboveground parts of the plant had a larger increase.The results indicated that P.cadierei Gagnep.et Guill was a potential phytoremediation plant for combined heavy metal polluted soil.
Laboratory Study of Indigenous Microorganism Activation System in Long Core

A long core physical simulation system(800 cm) was applied to study the indigenous microorganism flooding on a block of Xinjiang Oilfield.Tracking measurement was investigated on the variation of microorganism,nutrition and metabolite.The activation result was different at different position which could be approximately divided into three parts,such as oxygen-enriched part,oxygen-lacked part and anaerobic part.The results showed that the cell population of aerobic bacteria was different at different position in the porous medium and that of the aerobic position was obviously higher than that of anaerobic position.There was no regularity about the surface tension at different sample points,and the measured value had ups and downs.The surface tension of culture medium reduced from 57.7 mN/m to the lowest value 41.51 mN/m.The cell population,total content of organic carbon and total content of nitrogen increased first and then decreased with increasing output of produced fluids.The cell population of probiotics had a large scale enhancement,and that of the sulfate-reducing bacteria was inhibited efficiently.The ultimate recovery increased by 5.84% OOIP.The indigenous microorganism was activated efficiently in simulated oil-bearing formation,and the results reflected the succession from aerobic to anaerobic microorganism in reservoir,which indicated that the flooding effect and development prospect of enhanced oil recovery employing indigenous microorganism was good.
The Synthesis and Characterization of Novel Elastin-Like Polypeptides Containing an Oligomerization Domain

Elastin like polypeptides (ELPs) are an emerging class of biomaterials due to their unique group of chemical, physical and biological properties. We have constructed a library of ELPs based on the pentapeptide amino acid repeat sequence (GVGVP). ELPs exhibit lower critical solution temperature (LCST) transition behavior from a soluble phase below the transition temperature (Tt) to an insoluble two phase system above the transition temperature. This process is completely reversible so that ELPs can become soluble again upon lowering the temperature. This temperature can be tuned in many different ways at the molecular level by changing the composition of the amino acid sequence and by changing the molecular weight of the ELP. Solution parameters such as ELP concentration and NaCl concentration can also change the Tt of the ELP and these effects were investigated. An oligomerization domain, named foldon, was attached to the library of ELPs and termed (GVGVP)-foldon. The Tt’s of GVGVP and (GVGVP)-foldon were measured using ultraviolet spectrophotometry over a range of ELP concentrations, lengths and solution properties. The oligomerization domain is expected to reduce the Tt of the ELPs in comparison to linear ELPs due to increased chain length, molecular weight, hydrophobic interactions and intrinsic concentration. The trimerizing behavior of the foldon motif was confirmed by SDS-PAGE gel analysis. The results showed that the addition of the foldon domain reduced the Tt of all ELP constructs over a range of chain
Early Warning System for Flood Disasters Using the Internet of Things

Floods are one of the most frequently occurring natural disasters in Indonesia. It is therefore of special concern to reduce the risk of flood fatalities and other damage. The purpose of this study is to design a flood early warning system based on the Internet of Things (IoT). In this work, we use an ultrasonic HC-SR04 sensor to collect information about water levels. Further, we use an MCU8266 node as a microcontroller to analyze the sensor data and test it using a fuzzy inference system (FIS). To monitor the server activities, a Blink application is used as an iCloud IoT to hook up to smartphone devices. The test results show that all the devices function properly and that the system can classify water levels into normal, standby, alert, and danger categories in real time. Thus, the server can send information to the output device before a flood disaster occurs.
Determination of the Content of Carbazochrome Sodium Sulfonate and Glucose Injection by HPLC

Carbazochrome sodium sulfonate and glucose injection was determined by HPLC with Kromasil-C8 column (250×4.6mm,5μm)0.12%NH4H2PO4(pH3.0)-ethanol (85∶15) as mobile phase detected at 363nm.The linear range of carbazochrome sodium sulfonate was 0.080—0.120(mg/mL)(r=0.9995). The average recovery was 100.35%. This method is simple , selective and reproducible for the assay of carbazochrome sodium sulfonate.
CHAPTER 3:Pd–Phosphine Precatalysts for Modern Cross-Coupling Reactions

The development and use of well-defined preformed Pd catalysts are reviewed from academic and industrial points of view. The strategies employed for the development of Pd precatalysts resulting in either L2Pd(0) or LPd(0) are discussed with examples from industry and academia on how the properties of the ligand and the nature of the precatalyst itself can precisely affect the efficiency of a number of cross-coupling reactions. The well-defined preformed Pd catalysts often improve the selectivity and activity of selected cross-coupling reactions by reducing the metal loading and the ligand-to-metal ratios. In addition, they are often more practical to handle than the corresponding in situ system containing a Pd precursor such as Pd(dba)x and a pyrophoric ligand such as t-Bu3P.
Differential expression of molecular chaperon (HSP70) and antioxidant enzymes: inducing thermotolerance in rice (Oryza sativa L.).

Hyperthermia adversely affects cell structure and function, leading to necrosis and death of the plant that ultimately result in yield loss. Induced expression of the molecular chaperone protein HSP70 and antioxidant enzymes (SOD, CAT, APX and POD), can prevent heat induced cell death, by protecting structural and functional proteins conformation and detoxification of reactive oxygen species (ROS) respectively. In this study, temporal expression of molecular chaperones (HSP70) and antioxidant enzymes were determined during grain filling stage of eight local rice (IR-6, IR-8, DR-82, DR-83, DR-92, K-95, Sada Hayat, Shahkar) cultivars under different temperature regimes (control, 42±2 C and recovery treatments) for different time episodes (24, 48 and 72h). Results revealed heat stress induced expression of HSP70 with increasing duration of heat stress and this temporal expression was strongly correlated with thermotolerance in rice cultivars. Superoxide dismutase (SOD) and peroxidase (POD) gel-based study showed, elevated temperature, in general, enhanced expression and activity; however, it was cultivar specific. Among all cultivars, “DR-82”, “DR-83” and “Sada Hayat”, showed comparatively low expression of HSP70 as well as compromised and decline activity of SOD and POD under stress condition. Cultivar, “K-95” had strong expression of HSP70, more than one heat responsive bands of SOD and POD, provoking thermotolerance. It is concluded that heat shock proteins specifically expression of HSP70 can minimize heat induced damages and cell death by maintaining structural and functional protein integrity and play key role in development of thermotolerance, therefore can be used as potential biomarker of heat stress tolerance in rice.
Measurement of high content iron in positive electrode powder by atomic absorption spectrophotometer

The application of AIR-C2H2 flame atomic absorption spectrophotometer to measure high content iron in positive electrode powder of thermal batteries was studied.This paper introduced the optimum measuring conditions for iron and concentration in which a fine liner range presented,and made a synthetic consideration for interference factors.The method has the advantages of high sensitivity,and it is proved to be simple operation,easy master,short analyzing cycle,less interference and well in selectivity and reappearance.The relative standard deviations are all less than 1.0%(n=10)in ten sample measures,and the standard adding recovery is in the range of 97%～100%(n=6). The results shows that the method is fully suited to measuring high content iron in positive electrode powder of thermal batteries.The proposed method was proved to be a useful instrument analytical technique in AIR-C2H2 flame atomic absorption spectrophotometer.
Advances in the calorimetry and the thermokinetic study

The development of calorimetry is briefly introduced in this paper and the recent advances in the study of thermokinetics of various reactions by calorimetry are also reviewed. According to the preliminary study of mineral dissolution by introducing the microcalorimetric technique into geochemistry, the authors indicate that the thermokinetic study of geochemical reactions has wide prospects.
Composite Well Test Model Based on Oil-water Two Phase Flow for Injection Wells

At present,well test on water injection wells was based on single phase filtration theory and without considering the parameters of water content and water advance front and the effect of fluid and its property changes on pressure curve were not analyzed.A composite well test model was established for water injection wells based on law of conservation of mass and uniformed relative permeability curve for core in water injection wells and oil-water two phase flow filtration theory.The model was inverted by Laplace transformation to get the Laplace space solution;then,real space solution was obtained by using Stehfest numerical inversion;a typical curve of pressure-pressure derivative was drawn.The influence of the parameters such as water advance front,oil-water advance front,water content and water saturation on well test curves was analyzed,the effect of fluid property and formation changes on the variation of well test curves were discussed.The study results are significance for understanding physical parameters and water injection situation in water injection reservoir,it provides basis for further and rational development in water injection reservoirs.
Preparation of Monodispersed ZnS Nanoparticles by Ultraviolet Irradiation

Monodispersed ZnS nanoparticles were prepared under ultraviolet irradiation by using Na2S2O3·5H2O and Zn(CH3COO)2H2O as reactants,citric acid as controlling agent.The as-prepared samples were characterized by means of XRD,transmission electron microscopy(TEM),low temperature N2 adsorption-desorption,high-resolution transmission electron microscopy(HRTEM) and energy dispersive X-ray spectroscopy(EDS). The results show that with prolonging the reaction time the ZnS yield and average particle size increase while the specific surface area decreases.The reactant concentrations have significant influence on the composition and specific surface area of the samples,but little influence on their average size.Employing appropriate amount of citric acid in the reactant solution is favorable to the formation of monodispersed ZnS nanoparticles.
Three kinds pretreatment technique on sludge disintegration effect.

Three kind methods of thermal hydrolysis, ultrasonication and microwave were used to pretreat the waste sludge Its influence on sludge disintegration effect was inspected through detecting pH, soluble protein, total sugar and SCOD contents et targets.In each kind of pretreatment, the sludge pH value changed not remarkably. The sludge disintegration effect of sludge was strengthened with treating strength. When ultrasonication ED=2w/L, t=10min conditions, the sludge disintegration effect was meet good, the soluble protein, total sugar and SCOD concentration were 1013.6, 512.6, 4184 mg/L, respectively. SCOD/TCOD value enhanced 41.73% compared to the raw sludge. Considering the practical application and operation costs, long time and low strength treatments could all reach relatively good disintegration effect, that thermal treatment (t = 75min, T = 45℃), ultrasonic treatment (t =10min, ED = 0.5W/L), microwave treatment (t = 300s, p = 70W). In addition, under the same energy consumption, the disintegration effect of sludge is: ultrasonic microwave thermal hydrolysis.
Analysis of Spontaneous Abortions Using Genomics, Proteomics and In silico Tools

1Department of Genetics and Biotechnology, University of Tras-os-Montes and Alto Douro, Vila Real, Portugal 2Functional Genomics and Proteomics Unit, University of Tras -os-Montes and Alto Douro, Vila Real, Portugal 3Cytogenetics Laboratory, Genetics Service, Hospitalar Centre of Tras -os-Montes and Alto Douro, Vila Real, Portugal 4Bioscope Group, UCIBIO-REQUIMTE. Faculty of Sciences and Technology, New University of Lisbon, Campus de Caparica, Caparica, Portugal 5ProteoMass Scientific Society, Faculty of Sciences and Technology, Campus de Caparica, Portugal 6UCIBIO-REQUIMTE, Faculty of Science and Technology, University Nova of Lisbon, Caparica, Portugal #These authors contributed equally to this work
Microemulsion medium-spectrophotometric determination of zinc in aluminium alloy with 5-Br-PADAP

In the medium of oil-80% H_2O(O/80%W) microemulsion (SDS-n-C_4H_9OH-n-C_7H_(16)-H_2O) and weak base.Zn with 5-Br-PADAP forms a complex with maximum absorption wavelength of 555 nm.The apparent molar absorption coefficient is 1.24×10~5 L·mol~(-1)·cm~(-1). Beer's law is obeyed in the range of 0-10 μg/10 mL for Zn.Interference ions Cu~(2+),Al~(3+),Fe~(3+),Co~(2+) and so on can be masked by adding triethanolamine and sulfourea solution.The mean recovery of the synthetic sample is 99.96%. The RSD is 1.30%. The method has been used for the determination of Zn in aluminium alloy(LD6063) and common aluminium.The RSD is 0.96% and 3.17% respectively.
Some Preliminary Synthetic Studies Related to Natural Perylenequinones

Allyl\|6,8\|dimethoxy\|1\|tetralone as the intermediate projected for a synthesis of hypocrellin was studied for its facile formation from 3\|(3,5\|dimethoxy\|benzyl)\|5\|hexenoic acid and its Wacker oxidation, addition of bromine and of hydrogen chloride. It and the diketone obtained by its Wacker oxidation were shown not susceptible towards oxidation by selenium dioxide.
The Effect of E-Payments on the Operational Risk Management in the Banking Industry: A Case of Commercial Banks in Kenya

iii ACKNOWLEDGMENT . v TABLE OF CONTENTS . vi LIST OF TABLES . viii LIST OF FIGURES. ix LIST OF ABBREVIATIONS . x CHAPTER ONE . 1 1.0 INTRODUCTION . 1 1.1 Background of the Study . 1 1.2 Statement of the Problem . 5 1.3 General Objective . 6 1.4 Specific Objectives . 6 1.5 Significance of the Study . 6 1.6 Scope of the Study . 7 1.7 Definition of the Terms. 7 1.8 Chapter Summary . 8 CHAPTER TWO. 9 2.0 LITERATURE REVIEW. 9 2.