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Direct microwave leaching conditions of rare earth elements 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.N.Saridede S.S.Kaplan m.S.Sonmez Department of metallurgical and materials engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical engineering and materials Science Stevens Institute of TechnologyNew JereyUSA Department of metallurgical and materials engineering Istanbul Technical UniversityIstanbulTurkey

The luminescent phosphor powder in the fluorescent lamp constitutes 2%of the lamp’s *** can be mentioned that fluorescent wastes are a crucial raw material to produce rare earth *** the present study,microwave leaching process was conducted to dissolve rare earth elements yttrium(Y),europium(eu),and remaining rare earth elements(Rees)present in the phosphor powder of the fluorescent *** the yields were *** the microwave leaching process,the effects of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),sulphuric acid(H_(2)SO_(4))),acid concentration(0.5-6 mol/L),solid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters on leaching efficiencies of varying rare earth elements and calcium were *** highest yield was obtained in the direct microwave leaching of fluorescent waste with the experimental conditions of 6 mol/L HCl,160℃,0.1:10 solid-to-liquid ratio(S:L),and 90 *** energy calculations were made,and kinetic models of the reactions were obtained,and it is observed that Y and eu dissolution is diffusion-controlled,on the other hand,lanthanum(La),cerium(Ce),and terbium(Tb)were examined to be chemical reaction ***,calcium(Ca)and gadolinium(Gd)seem coherent with the mixed ***,mathematical models of all experimental studies are created with the respon.e surface Box-Behnken method and the correlation coefficients of all the models are over 90%.

关键词： Rare earth elements(Rees) Direct microwave leaching Fluorescent waste Kinetic models Respon.e surface method

The role of N-glycosylation in cancer

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1098-1110页

作者： Yu Lin David m.Lubman Department of Surgery University of Michigan Medical CenterAnn ArborMI 48109USA

Despite advances in understanding the development and progression of cancer in recent years,there remains a lack of comprehensive characterization of the cancer *** play an important role in medicine and are involved in various human disease conditions including ***-moieties participate in fundamental cancer processes like cell signaling,invasion,angiogenesis,and *** N-glycosylation significantly impacts cancer processes and targeted therapies in ***,understanding N-glycosylation in a tumor is essential for comprehending disease progression and discovering anti-cancer targets and biomarkers for therapy monitoring and *** review presents the fundamental process of protein N-glycosylation and summarizes glycosylation changes in tumor cells,including increased terminal sialylation,N-glycan branching,and ***,the role of N-glycosylation in tumor signaling pathways,migration,and metabolism are *** and glycopeptides as potential biomarkers for early detection of cancer based on site specificity have been ***,understanding and exploring the cancer glycoproteome,along with its role in medicine,implication in cancer and other human diseases,highlights the significance of N-glycosylation in tumor processes,necessitating further research for potential anticancer targets and biomarkers.

关键词： N-Glycosylated proteins Cancer signaling Cancer angiogenesis Cancer metabolism Cancer biomarkers

A FLeXIBLe OBJeCTIVe-CONSTRAINT APPROACH AND A NeW ALGORITHm FOR CONSTRUCTING THe PAReTO FRONT OF mULTIOBJeCTIVe OPTImIZATION PROBLemS

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Acta mathematica Scientia 2024年第2期44卷 702-720页

作者： N.HOSeINPOOR m.GHAZNAVI Faculty of mathematical Sciences Shahrood University of TechnologyShahroodIran

In this article, a novel scalarization technique, called the improved objective-constraint approach, is introduced to find efficient solutions of a given multiobjective programming problem. The presented scalarized problem extends the objective-constraint problem. It is demonstrated that how adding variables to the scalarized problem, can lead to find conditions for (weakly, properly) Pareto optimal solutions. Applying the obtained necessary and sufficient conditions, two algorithms for generating the Pareto front approximation of bi-objective and three-objective programming problems are designed. These algorithms are easy to implement and can achieve an even approximation of (weakly, properly) Pareto optimal solutions. These algorithms can be generalized for optimization problems with more than three criterion functions, too. The effectiveness and capability of the algorithms are demonstrated in test problems.

关键词： multiobjective optimization Pareto front scalarization objective-constraint approach proper efficient solution

The Triple Helix of innovation as a double game involving domestic and foreign actors

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Journal of Data and Information Science 2024年第1期9卷 82-100页

作者： eustache mêgnigbêto University of Antwerp Antwerpen 2000Belgium

Purpose:The collaboration relationships between innovation actors at a geographic level may be considered as grouping two separate layers,the domestic 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 domestic grouping together domestic actors,and the foreign related to only actors from partner ***/methodology/approach:Bibliographic records data from the Web of Science for South Korea and West Africa breakdown per innovation actors and distinguishing domestic and international collaboration are analyzed with game *** core,the Shapley value,and the nucleolus are computed at the three levels to measure the synergy between ***:The synergy operates more in South Korea than in West Africa;the government is more present in West Africa than in South Korea;domestic actors create more synergy in South Korea,but foreign more in West Africa;South Korea can consume all the foreign synergy,which is not the case of West *** limitations:Research data are limited to publication records;techniques and methods used may be extended to other research *** implications:West African governments should increase their investment in science,technology,and innovation to benefit more from the synergy their innovation actors contributed at the foreign ***,the results of the current study may not be sufficient to prove that greater investment will yield benefits from foreign ***/value:This paper uses game theory to assess innovation systems by computing the contribution of foreign actors to knowledge production at an area *** proposes an indicator to this end.

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

Validation of adherence prediction system for 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： meer m Chisthi Department 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 *** manuscript 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 importance of the study,highlighting the prevalence of NAFLD,the lack of approved drugs for its treatment,and the crucial role of lifestyle *** use of the Delphi method for scale development and the subsequent evaluation of its reliability add scientific rigor to the *** results demonstrate that the scale is correlated with key lifestyle indicators,which makes it a promising 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 among scores indicative of good,average,and poor adherence enhances its clinical *** conclusion,the manuscript introduces eDAS,a valuable instrument that can contribute substantially to the field of NAFLD research and clinical practice.

关键词： Nonalcoholic fatty liver disease Lifestyle interventions Adherence assessment exercise and Diet Adherence Scale Delphi method

The new kid on the block in insect pest management:sprayable RNAi goes commercial

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Science China(Life Sciences) 2024年第8期67卷 1766-1768页

作者： Junjie Yan Ralf Nauen Stuart Reitz Andrei Alyokhin Jiang Zhang David mota-Sanchez Yonggyun Kim Subba Reddy Palli Silvia I.Rondon Brian A.Nault Juan Luis Jurat-Fuentes michael S.Crossley William e.Snyder Angharad m.R.Gatehouse myron P.Zalucki Bruce e.Tabashnik Yulin Gao State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Bayer AG Crop Science DivisionR&DPest ControlMonheim 40789Germany Department of Crop and Soil Science Oregon State UniversityOntario 97914USA School of Biology and ecology University of MaineOrono 04469USA Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Department of entomology Michigan State UniversityEast Lansing 48864USA Department of Plant medicals Andong National UniversityAndong 36729Republic of Korea Department of entomology University of KentuckyLexington 40503USA Oregon State University Oregon Integrated Pest Management CenterCorvallis 97838USA Department of entomology Cornell UniversityCornell AgriTechGeneva 14456USA Department of entomology and Plant Pathology University of TennesseeKnoxville 37996USA Department of entomology and Wildlife ecology University of DelawareNewark 19716USA Department of entomology University of GeorgiaAthensGeorgia 30602USA School of Natural and environmental Sciences Newcastle UniversityNewcastle upon TyneNE17RUUK School of the environment University of QueenslandBrisbane 4072Australia Shandong engineering Research Center for environment-Friendly Agricultural Pest management College of Plant Health and MedicineQingdao Agricultural UniversityQingdao 266109China Department of entomology University of ArizonaTucson 85721USA National Center of excellence for Tuber and Root Crop Research Chinese Academy of Agricultural SciencesBeijing 100081China

Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns exacerbate this *** urgently need safe and effective crop protection tools to sustainably generate yields that meet ever-increasing global demand.

关键词： crops damage pest

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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： mokhtar ellali mokhtar Bouazza Ashraf m.Zenkour Smart structures Laboratory University of Ain TemouchentAin Temouchent 46000Algeria Department of Civil engineering University Tahri Mohamed of BecharBechar 08000Algeria Department of mathematics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Laboratory of materials and Hydrology(LmH) University of Sidi Bel AbbesSidi Bel Abbes 22000Algeria Department of mathematics Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33516Egypt

Several studies on functionally graded materials(FGms)have been done by researchers,but few studies have dealt with the impact of the modification of the properties of materials with regard to the functional propagation of the waves in *** work aims to explore the effects of changing compositional characteristics and the volume fraction of the constituent of plate materials regarding the wave propagation respon.e of thick plates of *** model is based on a higher-order theory and a new displacement field with four unknowns that introduce indeterminate integral variables with a hyperbolic arcsine *** FGm plate is assumed to consist of a mixture of metal and ceramic,and its properties change depending on the power functions of the thickness of the plate,such as linear,quadratic,cubic,and inverse *** utilizing Hamilton’s principle,general formulae of the wave propagation were obtained to establish wave modes and phase velocity curves of the wave propagation in a functionally graded plate,including the effects of changing compositional characteristics of materials.

关键词： FGm plate effects of material properties wave propagation indeterminate integral variables inverse sinus hyperbolic function

Parametric investigation on the novel and cost-effective nano fly ash impregnated geopolymer system for 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.mOHANA S.m.Leela BHARATHI Department of Civil engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazardous environmental effects of greenhouse gas emissions and climate change demand alternative sources for cementitious materials in the construction *** development of geopolymer structures provides a way of producing 100%cement-free *** this research work,a novel and simple way of deriving nano particles from waste fly ash particles is *** effect of adding the synthesized nano fly ash particles as a filler medium in geopolymer mortars was investigated by considering strength and durability *** optimization was done by using regression analysis on the geopolymer mortar and the impact of adding nano fly ash particles was studied by varying different percentages of addition ranging from 0 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 polymerization process,resulting in denser geopolymer *** can explain the extraordinary gain in strength of 72.11 mPa as well as the denser core with negligible level of chloride ion penetration,making the material suitable for the development of structures susceptible to marine environment.

关键词： geopolymer nano fly ash chloride ion penetration durability polymerization fillers

Anisotropic extensions of isotropic Finch–Skea metric in the charged modified gravity

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Communications in Theoretical Physics 2024年第9期76卷 120-142页

作者： Tayyab Naseer m Sharif Department of mathematics and Statistics The University of Lahore

In this study, we explore the Finch–Skea perfect fluid solution and extend its domain to three distinct anisotropic interior models within the framework of the f(R, T) theory, incorporating the influence of an electromagnetic field. We assume a static spherical spacetime initially coupled with an isotropic matter distribution. We then introduce a Lagrangian corresponding to an additional gravitating source, taking into account its role in inducing pressure anisotropy within the original fluid source. By deriving the field equations for the combined matter setup, we applied a radial component transformation, which yielded two distinct systems of equations. In addition, we consider a charged exterior spacetime to determine the three constants associated with the Finch–Skea solution at the boundary. Our findings suggest that under certain parametric choices, all three resulting models exhibited physical relevance within this modified theory.

关键词： anisotropy gravitational decoupling modified gravity