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Direct m..rowave leaching conditions of rare earth elem..ts in fluorescent wastes

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m...Saridede S.S.Kaplan m...Sonm.. Departm..t of m..allurgical and m..erials Engineering Yildiz Technical UniversityIstanbulTurkey Departm..t of Chem..al Engineering and m..erials Science Stevens Institute of TechnologyNew JereyUSA Departm..t of m..allurgical and m..erials Engineering Istanbul Technical UniversityIstanbulTurkey

The lum..escent phosphor powder in the fluorescent lam..constitutes 2%of the lam..s *** can be m..tioned that fluorescent wastes are a crucial raw m..erial to produce rare earth *** the present study,m..rowave leaching process was conducted to dissolve rare earth elem..ts yttrium..),europium..u),and rem..ning rare earth elem..ts(REEs)present in the phosphor powder of the fluorescent *** the yields were *** the m..rowave leaching process,the effects of the tem..rature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),sulphuric acid(H_(2)SO_(4))),acid concentration(0.5-6 m../L),solid to liquid ratio(0.1:10-0.5:10)and reaction tim..5-90 m..)param..ers on leaching efficiencies of varying rare earth elem..ts and calcium..ere *** highest yield was obtained in the direct m..rowave leaching of fluorescent waste with the experim..tal conditions of 6 m../L HCl,160℃,0.1:10 solid-to-liquid ratio(S:L),and 90 *** energy calculations were m..e,and kinetic m..els of the reactions were obtained,and it is observed that Y and Eu dissolution is diffusion-controlled,on the other hand,lanthanum..a),cerium..e),and terbium..b)were exam..ed to be chem..al reaction ***,calcium..a)and gadolinium..d)seem..oherent with the m..ed ***,m..hem..ical m..els of all experim..tal studies are created with the response surface Box-Behnken m..hod and the correlation coefficients of all the m..els are over 90%.

关键词： Rare earth elem..ts(REEs) Direct m..rowave leaching Fluorescent waste Kinetic m..els Response surface m..hod

The role of N-glycosylation in cancer

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Acta Pharm..eutica Sinica B 2024年第3期14卷 1098-1110页

作者： Yu Lin David m..ubm.. Departm..t of Surgery University of Michigan Medical CenterAnn ArborMI 48109USA

Despite advances in understanding the developm..t and progression of cancer in recent years,there rem..ns a lack of com..ehensive characterization of the cancer *** play an im..rtant role in m..icine and are involved in various hum.. disease conditions including ***-m..eties participate in fundam..tal cancer processes like cell signaling,invasion,angiogenesis,and *** N-glycosylation significantly im..cts cancer processes and targeted therapies in ***,understanding N-glycosylation in a tum.. is essential for com..ehending disease progression and discovering anti-cancer targets and biom..kers for therapy m..itoring and *** review presents the fundam..tal process of protein N-glycosylation and sum..rizes glycosylation changes in tum.. cells,including increased term..al sialylation,N-glycan branching,and ***,the role of N-glycosylation in tum.. signaling pathways,m..ration,and m..abolism..re *** and glycopeptides as potential biom..kers for early detection of cancer based on site specificity have been ***,understanding and exploring the cancer glycoproteom..along with its role in m..icine,im..ication in cancer and other hum.. diseases,highlights the significance of N-glycosylation in tum.. processes,necessitating further research for potential anticancer targets and biom..kers.

关键词： N-Glycosylated proteins Cancer signaling Cancer angiogenesis Cancer m..abolism Cancer biom..kers

A FLEXIBLE OBJECTIVE-CONSTRAINT APPROACH AND A NEW ALGORITHm..OR CONSTRUCTING THE PARETO FRONT OF m..TIOBJECTIVE OPTIm..ATION PROBLEmS

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Acta m..hem..ica Scientia 2024年第2期44卷 702-720页

作者： N.HOSEINPOOR m..HAZNAVI Faculty of m..hem..ical Sciences Shahrood University of TechnologyShahroodIran

In this article, a novel scalarization technique, called the im..oved objective-constraint approach, is introduced to find efficient solutions of a given m..tiobjective program..ng problem..The presented scalarized problem..xtends the objective-constraint problem..It is dem..strated that how adding variables to the scalarized problem..can lead to find conditions for (weakly, properly) Pareto optim.. solutions. Applying the obtained necessary and sufficient conditions, two algorithm..for generating the Pareto front approxim..ion of bi-objective and three-objective program..ng problem..are designed. These algorithm..are easy to im..em..t and can achieve an even approxim..ion of (weakly, properly) Pareto optim.. solutions. These algorithm..can be generalized for optim..ation problem..with m..e than three criterion functions, too. The effectiveness and capability of the algorithm..are dem..strated in test problem..

关键词： m..tiobjective optim..ation Pareto front scalarization objective-constraint approach proper efficient solution

The Triple Helix of innovation as a double gam..involving dom..tic and foreign actors

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Journal of Data and Inform..ion Science 2024年第1期9卷 82-100页

作者： Eustache m..nigbêto University of Antwerp Antwerpen 2000Belgium

Purpose:The collaboration relationships between innovation actors at a geographic level m.. be considered as grouping two separate layers,the dom..tic and the *** the level of each layer,the relationships and the actors involved constitute a Triple Helix *** paper distinguished three levels of analysis:the global grouping together all actors,the dom..tic grouping together dom..tic actors,and the foreign related to only actors from..artner ***/m..hodology/approach:Bibliographic records data from..he Web of Science for South Korea and West Africa breakdown per innovation actors and distinguishing dom..tic and international collaboration are analyzed with gam..*** core,the Shapley value,and the nucleolus are com..ted at the three levels to m..sure the synergy between ***:The synergy operates m..e in South Korea than in West Africa;the governm..t is m..e present in West Africa than in South Korea;dom..tic actors create m..e synergy in South Korea,but foreign m..e in West Africa;South Korea can consum..all the foreign synergy,which is not the case of West *** lim..ations:Research data are lim..ed to publication records;techniques and m..hods used m.. be extended to other research *** im..ications:West African governm..ts should increase their investm..t in science,technology,and innovation to benefit m..e from..he synergy their innovation actors contributed at the foreign ***,the results of the current study m.. not be sufficient to prove that greater investm..t will yield benefits from..oreign ***/value:This paper uses gam..theory to assess innovation system..by com..ting the contribution of foreign actors to knowledge production at an area *** proposes an indicator to this end.

关键词： Triple Helix Gam..theory Core Shapley value Nucleolus South Korea West Africa

Validation of adherence prediction system..or lifestyle interventions in nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2024年第20期30卷 2629-2632页

作者： m..r m..histhi Departm..t of General Surgery Government Medical College PathanamthittaKonni 689691KeralaIndia

This editorial delves into the research article by Zeng et al published in the latest issue of World Journal of *** m..uscript contributes significantly to addressing the global health issue of nonalcoholic fatty liver disease(NAFLD)by introducing and validating the Exercise and Diet Adherence Scale(EDAS).The article effectively conveys the im..rtance of the study,highlighting the prevalence of NAFLD,the lack of approved drugs for its treatm..t,and the crucial role of lifestyle *** use of the Delphi m..hod for scale developm..t and the subsequent evaluation of its reliability add scientific rigor to the *** results dem..strate that the scale is correlated with key lifestyle indicators,which m..es it a prom..ing tool for assessing patient adherence to *** identification of specific score thresholds for predicting adherence to daily calorie intake and exercise adds practical value to the *** differentiation am..g scores indicative of good,average,and poor adherence enhances its clinical *** conclusion,the m..uscript introduces EDAS,a valuable instrum..t that can contribute substantially to the field of NAFLD research and clinical practice.

关键词： Nonalcoholic fatty liver disease Lifestyle interventions Adherence assessm..t Exercise and Diet Adherence Scale Delphi m..hod

Wave propagation of a functionally graded plate via integral variables with a hyperbolic arcsine function

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 547-561页

作者： m..htar Ellali m..htar Bouazza Ashraf m..enkour Sm..t structures Laboratory University of Ain TemouchentAin Temouchent 46000Algeria Departm..t of Civil Engineering University Tahri Mohamed of BecharBechar 08000Algeria Departm..t of m..hem..ics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Laboratory of m..erials and Hydrology(Lm.. University of Sidi Bel AbbesSidi Bel Abbes 22000Algeria Departm..t of m..hem..ics Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33516Egypt

Several studies on functionally graded m..erials(FGm..have been done by researchers,but few studies have dealt with the im..ct of the m..ification of the properties of m..erials with regard to the functional propagation of the waves in *** work aim..to explore the effects of changing com..sitional characteristics and the volum..fraction of the constituent of plate m..erials regarding the wave propagation response of thick plates of *** m..el is based on a higher-order theory and a new displacem..t field with four unknowns that introduce indeterm..ate integral variables with a hyperbolic arcsine *** FGm..late is assum.. to consist of a m..ture of m..al and ceram..,and its properties change depending on the power functions of the thickness of the plate,such as linear,quadratic,cubic,and inverse *** utilizing Ham..ton’s principle,general form..ae of the wave propagation were obtained to establish wave m..es and phase velocity curves of the wave propagation in a functionally graded plate,including the effects of changing com..sitional characteristics of m..erials.

关键词： FGm..late effects of m..erial properties wave propagation indeterm..ate integral variables inverse sinus hyperbolic function

Param..ric investigation on the novel and cost-effective nano fly ash im..egnated geopolym.. system..or sustainable construction

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Frontiers of Structural and Civil Engineering 2024年第2期18卷 170-183页

作者： R.m..ANA S.m..eela BHARATHI Departm..t of Civil Engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazardous environm..tal effects of greenhouse gas em..sions and clim..e change dem..d alternative sources for cem..titious m..erials in the construction *** developm..t of geopolym.. structures provides a way of producing 100%cem..t-free *** this research work,a novel and sim..e way of deriving nano particles from..aste fly ash particles is *** effect of adding the synthesized nano fly ash particles as a filler m..ium..n geopolym.. m..tars was investigated by considering strength and durability *** optim..ation was done by using regression analysis on the geopolym.. m..tar and the im..ct of adding nano fly ash particles was studied by varying different percentages of addition ranging from.. to 7.5%by weight of binder *** the results,it was observed that 1%nano fly ash acted not only as a filler but also as nano-sized precursors of the polym..ization process,resulting in denser geopolym.. *** can explain the extraordinary gain in strength of 72.11 m.. as well as the denser core with negligible level of chloride ion penetration,m..ing the m..erial suitable for the developm..t of structures susceptible to m..ine environm..t.

关键词： geopolym.. nano fly ash chloride ion penetration durability polym..ization fillers

Viscoelastic potential flow instability theory of Rivlin-Ericksen electrified fluids of cylindrical interface

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Journal of Ocean Engineering and Science 2024年第4期9卷 311-316页

作者： D.m..ostafa Departm..t of m..hem..ics College of ScienceQassim UniversityPO Box 6644Buraidah 51452Saudi Arabia Departm..t of m..hem..ics Faculty of EducationAin Shams UniversityRoxyCairoEgypt

A linear electrohydrodynam.. Kelvin-Helm..ltz instability of the interface between two viscoelastic Rivlin-Ericksen fluids enclosed by two concentric horizontal cylinders has been studied via the viscoelastic potential flow *** dispersion equation of com..ex coefficients for asym..tric disturbance has been obtained by using norm.. m..e *** stability criteria are analyzed theoretically and illustrated *** im..inary part of growth rate is plotted versus the wave *** influences of dynam.. viscoelastic,uniform..elocities,Reynolds num..r,electric field,dynam.. viscosity,density fluids ratio,dielectric constant ratio and inner fluid fraction on the stability of the system..re *** study finds its significance in Ocean pipelines to transfer oil or gas such as Eastern Siberia-Pacific Ocean oil pipeline.

关键词： Rivlin-Ericksen fluid Cylindrical flow Viscoelastic potential flow Electrohydrodynam..s stability

Anisotropic extensions of isotropic Finch–Skea m..ric in the charged m..ified gravity

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Com..nications in Theoretical Physics 2024年第9期76卷 118-140页

作者： Tayyab Naseer m..harif Departm..t of m..hem..ics and Statistics The University of Lahore1-Km Defence RoadLahore 54000Pakistan

In this study,we explore the Finch–Skea perfect fluid solution and extend its dom..n to three distinct anisotropic interior m..els within the fram..ork of the f(R,T)theory,incorporating the influence of an electrom..netic *** assum..a static spherical spacetim..initially coupled with an isotropic m..ter *** then introduce a Lagrangian corresponding to an additional gravitating source,taking into account its role in inducing pressure anisotropy within the original fluid *** deriving the field equations for the com..ned m..ter setup,we applied a radial com..nent transform..ion,which yielded two distinct system..of *** addition,we consider a charged exterior spacetim..to determ..e the three constants associated with the Finch–Skea solution at the *** findings suggest that under certain param..ric choices,all three resulting m..els exhibited physical relevance within this m..ified theory.

关键词： anisotropy m..ified gravity gravitational decoupling