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Advances in Chemical Engineering and Science 2024年第2期14卷 74-83页

作者： walther b. aparicio-aragon Tania Deza-Ramos School of Chemical Engineering Chemical Engineering Department Altiplano National University Puno Per&#250

Currently a technique widely used for gold extraction is mercury b. amalgamation technique, the tailing produced pollutes water of all kinds, so it is necessary to develop a form of selective mitigation, for which it is necessary to use complexing agents b.sed on calixarene functionalized with mercury sequestering agents. These are immob.lized b. adding supports b.sed on natural silica to form polymers and make them insolub.e in all types of solvents, so that they can b. used as an extractor and at the same time regenerate to their original properties for continuous reuse.

关键词： Extraction Amalgamation Polymer Natural Silicate Calixarene

Natural Silicate as a Solid Support for the Calix[4]Thiophosphorus Derivative for Removal Mercury (II), as Picrate from Water

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Effect of the Numb.r of Donor Atoms in Calix[4]arene Derivatives for Selective Complexation and Extraction of Mercury(II) Cations, Thermodynamics and Extraction Studies

Advances in Chemical Engineering and Science（化学工程与科学期刊） 2024年第2期 74页

作者： walther b. aparicio-aragon Tania Deza-Ramos

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Advances in Chemical Engineering and Science 2021年第2期11卷 165-179页

作者： walther b. aparicio-aragon Tania Deza Ramos Angela F. Danil de Namor School of Chemical Engineering Chemical Engineering Department Altiplano National University Puno Perú School of b.omedical and Molecular Sciences Chemistry Division University of Surrey Guildford UK

Water pollution due to gold mining activity is increasingly worrying. One way to selectively mitigate it is through the use of complexing agents such as calixarenes, which selectively functionalized with soft donor atoms such as sulphur, can selectively remove this pollutant, for the selective complexation of mercury from contaminated water, which was compared by conductimetry and liquid-liquid extraction studies with results that show that the derivative with the highest sulphur atoms is its structure which presents greater selectivity compared to the derivative with the lowest number of sulphur atoms, in both cases, they present very stable complexes.

关键词： Pollutant Calixarene Mercury Selectivity Donor Atoms

Effect of the Numb.r of Donor Atoms in Calix[4]arene Derivatives for Selective Complexation and Extraction of Mercury(II) Cations, Thermodynamics and Extraction Studies

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Predicting the clothing insulation through machine learning algorithms:A comparative analysis and a practical approach

Advances in Chemical Engineering and Science（化学工程与科学期刊） 2021年第2期

作者： walther b. aparicio-aragon Tania Deza Ramos Angela F. Danil de Namor

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b.ilding Simulation 2024年第5期17卷 839-855页

作者： Pab.o aparicio-Ruiz Elena b.rb.dilla-Martin Jose Guadix Jesus Munuzuri Grupo de Ingenieria de Organizacion Escuela Tecnica Superior de IngenieriaUniversidad de SevillaCamino de los Descubrimientos S/N41092SevilleSpain

Since indoor clothing insulation is a key element in thermal comfort models,the aim of the present study is proposing an approach for predicting it,which could assist the occupants of a b.ilding in terms of recommendations regarding their *** that,a systematic analysis of input variab.es is exposed,and 13 regression and 12 classification machine learning algorithms were developed and *** results are b.sed on data from 3352 questionnaires and 21 input variab.es from a field study in mixed-mode office b.ildings in *** temperature at 6 a.m.,indoor air temperature,indoor relative humidity,comfort temperature and gender were the most relevant features for predicting clothing *** comparing machine learning algorithms,decision tree-b.sed algorithms with b.osting techniques achieved the b.st *** proposed model provides an efficient method for forecasting the clothing insulation level and its application would entail optimising thermal comfort and energy efficiency.

关键词： clothing insulation simulation adaptive thermal comfort b.havioural adaptive actions machine learning

Exploring the thermophysical properties of natural deep eutectic solvents for gas capture applications: a comprehensive review

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Green Chemical Engineering 2024年第3期5卷 307-338页

作者： Ahmad Al-b.dour Noor Alomari Alb.rto Guti errez Santiago aparicio Mert Atilhan Department of Chemical and Paper Engineering Western Michigan University Department of Chemistry University of Burgos Faculty of Sciences

With the intensifying challenge of glob.l warming driven largely b. anthropogenic activities, effective greenhouse gas capture techniques are critical. This paper focuses on the role of deep eutectic solvents(DES) as promising agents for such capture at the source. We review the key DES-b.sed methods for greenhouse gas capture, drawing conclusions from a thorough analysis of the existing literature. In particular, we examine the effect of DES structure on gas solub.lities and explore the mechanism of gas solub.lity in DES through molecular simulation. We present a synthesis of state-of-the-art results in this area, assessing the potential of DES as an alternative to current industrial gas capture methods. Furthermore, we propose future research directions for the design of novel DES tailored to more specific applications.

关键词： Glob.l warming Climate change Deep eutectic solvents Gas capture Gas separation

Towards efficient strain engineering of 2D materials:A four-points b.nding approach for compressive strain

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Nano Research 2024年第6期17卷 5317-5325页

作者： Hao Li Félix Carrascoso Ana b.rrás Gloria P.Moreno Francisco J.aparicio Ángel b.rranco Andrés Castellanos Gómez Campus de Cantob.anco Instituto de Ciencia de Materiales de MadridC.Sor Juana Inés de la Cruz328049 MadridSpain Nanotechnology on Surfaces and Plasma Lab Instituto de Ciencia de Materiales de Sevilla(CSIC-Universidad de Sevilla).C/Americo Vespucio 49E-41092 SevilleSpain Departamento de Física Aplicada I Escuela Politécnica SuperiorUniversidad de Sevillac/Virgen deÁfrica 7E-41011 SevilleSpain

Strain engineering,as a powerful strategy to tune the optical and electrical properties of two-dimensional(2D)materials b. deforming their crystal lattice,has attracted significant interest in recent years.2D materials can sustain ultra-high strains,even up to 10%,due to the lack of dangling b.nds on their surface,making them ideal b.ittle *** remarkab.e mechanical resilience,together with a strong strain-tunab.e b.nd structure,endows 2D materials with a b.oad optical and electrical response upon ***,strain engineering b.sed on 2D materials is restricted b. their nanoscale and strain quantification *** this study,we have modified a homeb.ilt three-points b.nding apparatus to transform it into a four-points b.nding apparatus that allows for the application of b.th compressive and tensile strains on 2D *** approach allows for the efficient and reproducib.e construction of a strain system and minimizes the b.ckling effect caused b. the van der Waals interaction b. adamantane encapsulation *** results demonstrate the feasib.lity of introducing compressive strain on 2D materials and the potential for tuning their optical and physical properties through this approach.

关键词： uniaxial compressive strain polymer encapsulation differential reflectance spectroscopy exciton tunab.lity

Simulation and experimentation of Propeller-Savonius turb.ne tested underwater surface

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CLEAN ENERGY 2024年第3期8卷 20-33页

作者： Wuryanti, Sri Sasono, Teguh Manunggal, b.mb.ng P. Mursanto, Wahyu b. Sugianto Politekn Negeri b.ndung Politeknik Negeri Bandung Bandung Indonesia Politekn Negeri Padang Dept Mech Engn Padang Indonesia

Indonesia's vast maritime territory offers a unique opportunity for harnessing the potential Energy of seawater currents. This study explores the effectiveness of a comb.ned Savonius and propeller-type turb.ne system. The Savonius turb.ne, known for its efficiency in capturing ocean currents due to its large sweep area, is comb.ned with a propeller-type turb.ne to enhance rotational speed and power generation. A novel approach is employed to induce turb.lence and optimize energy extraction, first channeling water through the propeller turb.ne and then into the Savonius turb.ne. A comprehensive investigation is conducted through simulations and experimental tests within a controlled tunnel environment. The study explores the performance of two-b.aded and three-b.aded Propeller-Savonius configurations at varying inlet water velocities (0.1, 0.3, 0.6 and 1.0 m/s). The simulation incorporates a turb.lence model with 5% intensity and a hydraulic diameter of 0.216 m. Results indicate that the proposed configuration achieves a maximum power output of 2.0293 W with an impressive efficiency of 63.339% in simulation. Concurrently, experimental testing yields a peak efficiency of 61.335% and turb.ne power of 0.3951 W. The findings demonstrate the feasib.lity of the comb.ned turb.ne system and highlight the importance of turb.lence in optimizing energy extraction from seawater currents. This research contrib.tes valuab.e insights into the design and performance of hyb.id turb.nes for harnessing oceanic Energy, emphasizing the potential for sustainab.e power generation in maritime regions. The methodology and results presented herein offer a foundation for further exploration and refinement of seawater current energy conversion technologies. The study comb.nes a Savonius turb.ne and a propeller turb.ne to enhance rotational speed and power generation. CFD simulations and experiments document performance at different water velocities. The findings show that this system is promisi

关键词： hydro-turb.ne propeller -Savonius renewab.e energy water WIND TURb.NE PERFORMANCE b.ADES CFD RATIO

Solving the Three-Neutrino Prob.em as One of the Three-b.dy Prob.ems in Physics

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Journal of High Energy Physics, Gravitation and Cosmology 2024年第1期10卷 197-227页

作者： Zoran b. Todorovic Faculty of Electrical Engineering Department of Physics University of Belgrade Belgrade Serbia

b. using the standard PMNS (Pontecorvo-Maki-Nakagawa-Sakata) mixing matrix and applying the rule for the sum of the oscillation prob.b.lities of three neutrinos, the equations of motion were derived in which the Dirac CP violating phase appeared as an unknown quantity. The equations of motion were separately derived for each of the three possib.e transitions for flavor-neutrino oscillations. Two roots of those equations were ob.ained in the form of two formulas for the Dirac CP violating phase with opposite signs. In the mathematical sense, the connection b.tween those formulas was estab.ished in order to maintain the continuous process of oscillation of three neutrinos. This made it possib.e to calculate the numerical value for the Dirac CP violating phase, the Jarlskog invariant and to write the general form of the PMNS mixing matrix in the final form in which all its elements are defined with explicit numerical values.

关键词： Ordinary Neutrino PMNS Matrix Dirac CPV Phase Jarlskog Invariant

On the Numb.r of Primes in the Interval (x, 2x) b. an Elementary Method

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Advances in Pure Mathematics 2024年第1期14卷 16-29页

作者： Sudhindra b. Kittur Independent Researcher Mumbai India

An elementary formula to know the numb.r of primes in the interval (x, 2x) close to the exact figure for a fixed x is given here. A new elementary equation is derived (a relation b.tween prime numb.rs and composite numb.rs distrib.ted in the interval [1, 2x]). An elementary method to know the numb.r of primes in a given magnitude is suitab.y placed in the form of a general formula, and we have proved it. The general formula is applied to the terms of the equation, and a tactical simplification of the terms gives rise to an expression whose verification envisages scope for its further studies.

关键词： Prime Numb.rs Composite Numb.rs Expression Integers