Ultrasonic Extraction-Gas Chromatography-Mass Spectrometry for Determination of Eight Organophosphorus Flame Retardants in Coatings by ZHANG Ying, LI Yi, CHEN Yezi, WANG Xutao

“…A method for the simultaneous determination of eight organophosphorus flame retardants (OPFRs) in coatings is developed with ultrasonic extraction for preprocessing and gas chromatography-mass spectrometry (GC-MS).The comparison and optimization of experimental conditions in the ultrasonic extraction process indicate that acetone should be taken as the extraction solvent,and the extraction temperature and time should be set to 30 ℃ and 15 min,respectively;when the extraction is repeated twice,the recovery is good.Quantitative analysis is performed by GC-MS with selective ion scanning,with the linear range of the standard preparation curves being 10~1 000 ng/mL.The results demonstrate that the correlation coefficients of linear regression equations for eight OPFRs are not less than 0.990 4.The detection limits of the method are between 0.04 and 0.26 ng/mL,with the recovery of 79.3%~112.0%,and the relative standard deviations are less than or equal to 6.4%.The application of the method to the determination of OPFRs in coating products from five enterprises shows that TCEP is detected in samples of only one enterprise,with a concentration of 15.22 ng/mL.…”
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Passional Atheism, Passional Agnosticism and ‘The Will to Believe’ by Daniel Molto

“…Jack Warman and Joshua Cockayne have recently claimed that the arguments that William James provides in his famous lecture ‘The Will to Believe’ to justify passional theism would equally justify passional atheism. They are correct in this claim, but there is in fact more than one way that a non-theistic doxastic attitude can be passionally justified given what is said in James’s lecture. …”
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Relations école-familles immigrantes à l’école franco-albertaine : perspectives des travailleurs en établissement en école by Marianne Jacquet, Gwenaëlle André

“…With a transformative aim, it intends to promote ethno-cultural diversity in the classroom and equal opportunities through school equity practices. …”
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Miniaturized Wide Scanning Angle Phased Array Using EBG Structure for 5G Applications by Xiumei Shen, Kun Xue, Xinggang Tang, Yuqi He

“…A subarray of two closely packed patch antennas on electromagnetic bandgap structure (EBG) ground with the operating bandwidth of 26–29 GHz is used as the basic module of the linear array, which contains four equally spaced subarrays. The existence of the EBG ground enables the array to be compact in size (3.2 × 0.6 × 0.12λL3), yet the mutual coupling between each element can reach to more than 22 dB within the whole band of interest. …”
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Mobilizing the Rights of Homeless EU Citizens in the Netherlands by Dion Kramer

“…By marking them as so-called niet-rechthebbenden (“non-rightholders”), Dutch municipalities have systematically denied homeless EU citizens access to overnight shelters and general homelessness services on equal footing as Dutch citizens. This legal and practical deadlock—a classic case of non-compliance through “law in action”—has most probably led to a denial of rights to EU citizens entitled to shelter as permanent residents, (former) workers, or otherwise legally residing EU citizens. …”
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Behavior of Reinforced Composite Foamed-Normal Concrete Beams by Angham Nassar Jaffal, Ameer A. Hilal, Akram S. Mahmoud

“…The results showed that in terms of loading, the load of composite concrete beams was equal to that of normal concrete beams, and a slight increase in the lightweight foamed concrete beams was noticed. …”
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Développement de résistances chez les animaux alors que l’antibiotique ne leur a pas été administré by Madec, Jean-Yves

“…All these situations demonstrate that, in addition to paying attention to antibiotic prescription, an equally important facet of the fight against antibiotic resistance is to control the transmission routes of resistant bacteria.…”
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Maoïsme et éducation partisane. L’utopie éducative et la Révolution Culturelle by Roland Depierre

“…With no regard for the long Chinese cultural tradition of self-discipline, of appropriate distance, of impartiality and of a no-interference (Wuwei) stance, Maoist totalitarianism destroyed the State’s sovereign functions and the principles of equality in education. The revolutionary logic of Education, Re-education, Thought Reform and Overthrowing class domination was a near-impossible task.…”
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Tooth Flank Mismatch Meshing Analysis for Spiral Bevel Gear Based on Tilt Cutting Method by Shaowu Nie, Sicheng Tang, Juhua Huang, Hua Zhang, Changfa Lai, Yong Xu

“…Secondly，the gear meshing angle is derived based on the equality unit normal vector of the gear meshing mathematical model（TCA），so the TCA solving equations can be simplified. …”
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A New Accurate Numerical Method Based on Shifted Chebyshev Series for Nuclear Reactor Dynamical Systems by Yasser Mohamed Hamada

“…The total time interval is divided into equal step sizes to provide approximate solutions. …”
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Knowledge as cause and tool for resistance against large scale mining: heuristic cases in Ecuador by Cristina Espinosa

“…Not every kind of knowledge is recognized as equally legitimate or is evenly distributed among participants in the course of these struggles. …”
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Retour au travail après une lésion professionnelle : étude de cas sur les effets du droit sur l’expérience des justiciables by Katherine Lippel, Camille Lanthier-Riopel

“…It then provides an in-depth examination of the mechanisms by which specific parameters of the regulatory framework that governs workers’ compensation, occupational health and safety, and the right to equality shape events leading to less than satisfactory outcomes in disability prevention. …”
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The impact of a gamified approach on vocabulary learning and vocabulary self-efficacy: evidence from a chilean primary EFL school by Marco Cancino, Camila Viguera

“…Results revealed that both groups performed equally well regarding lexical gains, and that students in the experimental group significantly increased their vocabulary self-efficacy when compared to the control group. …”
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Speaker verification method based on cross-domain attentive feature fusion by Zhen YANG, Tianlang WANG, Haiyan GUO, Tingting WANG

“…Aiming at the problem that the lack of structure information among speech signal sample in the front-end acoustic features of speaker verification system, a speaker verification method based on cross-domain attentive feature fusion was proposed.Firstly, a feature extraction method based on the graph signal processing (GSP) was proposed to extract the structural information of speech signals, each sample point in a speech signal frame was regarded as a graph node to construct the speech graph signal and the graph frequency information of the speech signal was extracted through the graph Fourier transform and filter banks.Then, an attentive feature fusion network with the residual neural network and the squeeze-and- excitation block was proposed to fuse the features in the traditional time-frequency domain and those in the graph frequency domain to promote the speaker verification system performance.Finally, the experiment was carried out on the VoxCeleb, SITW, and CN-Celeb datasets.The experimental results show that the proposed method performs better than the baseline ECAPA-TDNN model in terms of equal error rate (EER) and minimum detection cost function (min-DCF).…”
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Ethyl -butyl ether synthesis using carbon catalysts from lignocellulose by Alexander M Puziy, Yuriy N Kochkin, Olga I Poddubnaya, Mykola M Tsyba

“…Calculated turnover frequency (TOF) of sulphonic groups (pK a  = −2.5) equals 0.00116 s −1 , polyphosphate groups (pK a  = 1.9) 0.01019 s −1 , strong carboxylic (pK a  = 3.6) 0.00202 s −1 and 0 s −1 for weak carboxylic (pK a  = 6) groups. …”
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Using Digital Games in Technology Oriented STEM Education: The Examination of the Students’ Game Designs by Ismail Donmez, Murat Tekce, Serihan Kirmit

“…As for the representation of the human figures, it is seen that the proportions of boys and girls were equal. Digital games in technology-oriented STEM education promote students to join the production process on a large scale. …”
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Research on Performance of Fiber-Based Multiple Apertures Receiver System with PPM Modulation by Kangning LI, Xu FENG, Jianwen GAO, Jing Ma

“…The performance of fi ber-based FSO with multiple apertures receiver system was studied for pulse position modulation (PPM) .Expressions of PPM modulated signal-to-noise ratio (SNR) and bit-error rate (BER) for fi ber-based FSO multiple apertures receiver system were presented based on the probability density function of Gamma-Gamma intencity distribution and non–central chisquare fi ber coupling effi ciency distribution under atmospheric infl uence.Selection combining (SC), equal gain combining (EGC) and maximum ratio combining (MRC) were considered to be three signal combining methods for multiple apertures receiver system.The BER performance of 4PPM modulted SC, EGC and MRC fi ber-based multiple apertures receiver system and single aperture receiver system with the same total aperture area were comparative analyzed by Monte Carlo simulation.The BER performance of fi ber-based multiple apertures receiver systems in 4PPM and 8PPM modulation modes were directly compared for diff erent combining methods.…”
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Modeling and Analysis of HIV and Cholera Direct Transmission with Optimal Control by Kumama Regassa Cheneke, Koya Purnachandra Rao, Geremew Kenassa Edessa

“…The disease-free equilibria of only the cholera and only the HIV models is locally and globally asymptotically if R0<1, and the endemic equilibria of only the cholera model and only the HIV model are locally and globally asymptotically stable if the corresponding reproduction number is equal to one. The endemic equilibrium point of the HIV and cholera model is computed, and stability property is shown with numerical simulations. …”
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Proportional Fair Power Allocation for Secondary Transmitters in the TV White Space by Konstantinos Koufos, Riku Jäntti

“…In this paper, we propose a power allocation algorithm that favors equally the secondary transmitters and it is able to protect the TV service in all cases. …”
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The Study of urban viability indicators status in Shahrekord, based on the position of urban management by pezhman mohamadi

“…The number of statistical population is equal to (160,000). The sample size was 383 people, determined according to the Cochran formula and available randomly. …”
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