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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1311-1318页

作者： WOng Yeong Yi f L Supian A Radzwan M Musa n f n Abd Karim Department of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Department of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Calix[n]arenes was utilized to detect PABA,the primary sunscreen *** study investigates the interaction of calix[4]arene(C4),calix[6]arene(C6),and PABA using the Langmuir method and first-principle density functional theory(DfT).Using the Langmuir-Schaefer(LS)technique,an ultrathin film composed of calix[n]arenes and their complexes with PABA was deposited on various *** on the Langmuir study,the PABA molecule was bonded to the lower rims of both C4 and C6 with the host-guest ratio of 1:*** of the LS films formed were then characterized by ultravioletvisible spectroscopy(UV-Vis),fourier-transform infrared spectroscopy(fTIR)and carbon,hydrog.n,nitrog.n,sulfur elemental analyzer(ChnS).The band gap reduction obtained in the DfT study denotes the charge transfer interaction with promising reactivity between the calix[n]arenes and *** sensing of PABA by C4 and C6 is successful based on the formation of bonding between them due to the hosts’effective trapping *** outcomes of this study could be applied to drug delivery systems for future pharmaceutical and medical applications.

关键词： calix[n]arenes band gap density functional theory Langmuir-Schaefer PABA sensor

Org.n Abscission in Plants: With Special Emphasis on Bell Pepper

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1467-1484页

作者： Ramiro Reyes-Castro héctor g.núñez-Palenius Juan I.Valiente-Banuet María E.Sosa-Morales Blanca E.Orosco-Alcalá Rafael guzmán-Mendoza graciela M.L.Ruiz-Aguilar Rogelio Costilla-Salazar Life Sciences Division Universidad de GuanajuatoIrapuato36500México School of Eng.neering and Sciences Tecnologico de MonterreyQuerétaro76130México

Bell pepper(Capsicum annuum L.),along with potato and tomato,is one of the three most cultivated vegetables in the *** pepper is worldwide accepted due to its characteristics of color,smell,ﬂavor,and *** pepper is also considered a nutritious food due to its vitamin and antioxidant *** Mexico,bell pepper production has a high value because it is grown for the international markets,particularly the United States of ***,the abscission ofﬂowers and fruits is a factor that limits the yield,hinders the planning of activities,and causes a variation in the prices of *** to the importance of this process,in this work we did a bibliometric analysis and literature review of scientiﬁc advances for the understanding of the abscission pro-cess in plants,and in particular for the bell ***,we introduce new perspectives that would help direct future research about org.n abscission in ***,the lack of research that would further clarify abscis-sion process in the bell pepper plant is discussed.

关键词： Capsicum annuum abscission zone plant growth regulators environmental factors

Conducting Polymer-Based e-Refinery for Sustainable hydrog.n Peroxide Production

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Energy & Environmental Materials 2024年第2期7卷 334-342页

作者： Zhixing Wu Penghui Ding Viktor gueskine Robert Boyd Eric Daniel g■owacki Magnus Odén Xaνier Crispin Magnus Berggren Emma M.Björk Mikhail Vag.n nanostructured Materials Department of PhysicsChemistry and Biology(IFM)Linköping UniversitySE 58183LinköpingSweden Laboratory of Org.nic Electronics Department of Science and Technology(ITN)Linköping UniversitySE 60174NorrköpingSweden

Electrocatalysis enables the industrial transition to sustainable production of chemicals using abundant precursors and electricity from renewable ***-centralized production of hydrog.n peroxide(h_(2)O_(2))from water and oxyg.n of air is highly desirable for daily life and *** report an effective electrochemical refinery(e-refinery)for h_(2)O_(2)by means of electrocatalysis-controlled comproportionation reaction(2_(h)O+o→2hO),feeding pure water and oxyg.n *** nickel(Ⅱ)oxide(niO)was used as electrocatalyst for oxyg.n evolution reaction(OER),producing oxyg.n at the *** polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)drove the oxyg.n reduction reaction(ORR),forming h_(2)O_(2)on the *** reactions were evaluated in both half-cell and device *** performance of the h_(2)O_(2)e-refinery,assembled on anion-exchange solid electrolyte and fed with pure water,was limited by the unbalanced ionic *** of the operation conditions allowed a conversion efficiency of 80%.

关键词： conducting polymer hydrog.n peroxide nickel(Ⅱ)oxide oxyg.n evolution reaction oxyg.n reduction reaction

Revealing the Regulation Effect of Surface Charge at Aromatic Interface to Dynamic Conformational Changes of α-Synuclein at Early Aggregation Stage

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Chinese Journal of Chemistry 2024年第16期42卷 1867-1876页

作者： Yuqi Zhang lie Wu Xiue Jiang State Key Laboratoryof Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun Jilin 130022China Schoolof Applied Chemistry and Eng.neering University of Science and Technology of ChinaHefei Anhui 230026China Research Center for Analytical Science College of ChemistryNankai UniversityTianjin 300071China

The aggregation ofα-synuclein(α-syn)is strongly influenced by membrane interfaces,but the mechanism of transition from monomers to oligomers at early aggregation stage is not ***,we investigate the adsorption and structure changes ofα-syn on oppositely charged aromatic interfaces through in-situ surface-enhanced infrared absorption(SEIRA)spectroscopy and nano-IR *** results show that the synergy of electrostatic and hydrophobic interactions leads to a“fast-slow”two-step aggregation pathway on negatively charged *** adsorption induces the formation of an extended helix structure and subsequently partial helix unwinding in nAC region,which enables the hydrophobic stacking between nearby nAC *** antiparallel β-sheet rich aggregates are gradually emerg.ng as further interactions of monomers with the fast formed“first layer”.Monomers electrostatically adsorb on positively charged interface by C-terminus with nAC region and n-terminus stretched in solvent,which serve as an aggregation core and induce further adsorption and gradual formation of aggregates with C-terminus *** results demonstrate the modulation of surface charge and synergy of electrostatic and hydrophobic interactions on the interaction modes and aggregation pathways,which provide insights into dynamic conformation changes ofα-syn at early aggregation stage and imply the important role of spatial-temporal heterog.neity of membranes inα-synucleinopathies.

关键词： α-Synuclein Interface Early aggregation IR spectroscopy Surface analysis Analytical methods Proteins Dynamic monitoring

Marinoan glaciation in the Indian subcontinent——Anatomy and global implications

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Journal of Palaeogeography 2024年第2期13卷 293-308页

作者： h.n.Bhattacharya Department of Earth Sciences Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedimentological analysis of the Pokaran Boulder Bed,representing the most basal unit of the neoproterozoic-Lower Cambrian Marwar Supergroup,clearly indicates its glacial *** glacial sediments are interpreted as an ice-contact submarine fan *** on the detrital and inherited zircon population of the Marwar Supergroup sediments and interlayered pyroclastic deposits,a Marinoan cryochron of the Cryog.nian Period is envisaged for the Pokaran Boulder *** well-preserved Ediacaran elements in the post-glacial sedimentary succession also support a Cryog.nian to Early Cambrian age of the Marwar *** glacial deposition at the base of the Marwar Supergroup strengthens the regional correlation between the studied sediments with the Lesser himalayan Blaini-Krol-Tal sediments and the haqf Supergroup of *** available zircon ages and paleomagnetic data of the Malani Igneous suite,along with the Marinoan glacial deposits,detrital zircon ages,and Ediacaran fossil elements of the Marwar Supergroup add significant information to the neoproterozoic Earth history.

关键词： neoproterozoic Marinoan glaciation Diamictites Pokaran Boulder Bed Marwar Supergroup

Endoscopic treatment of biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants: Lessons learned from single-balloon enteroscopy-assisted ERCP

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hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 509-514页

作者： Rodrigo garcés-Durán Laurent Monino Pierre h Deprez hubert Piessevaux Tom g Moreels Department of gastroenterology and hepatology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Background: Endoscopic treatment of biliopancreatic pathology is challeng.ng due to surgically altered anatomy after Whipple's pancreaticoduodenectomy. This study aimed to evaluate the feasibility and safety of single-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography(SBE-ERCP) to treat biliopancreatic pathology in patients with Whipple's pancreaticoduodenectomy surgical variants. Methods: We retrospectively analyzed 106 SBE-ERCP procedures in 46 patients with Whipple's variants. Technical and clinical success rates and adverse events were evaluated. Results: Biliary SBE-ERCP was performed in 34 patients and pancreatic SBE-ERCP in 17, including 5 with both indications. from a total of 106 SBE-ERCP procedures, 76 were biliary indication with technical success rate of 68/76(90%) procedures and clinical success rate of 30/34(88%) patients. Mild adverse event rate was 8/76(11%), without serious adverse events. from a total of 106 SBE-ERCP procedures, 30 were pancreatic indication with technical success rate of 24/30(80%) procedures( P = 0.194 vs. biliary SBEERCP) and clinical success rate of 11/17(65%) patients( P = 0.016 vs. biliary SBE-ERCP). Mild adverse event rate was 6/30(20%)( P = 0.194 vs. biliary SBE-ERCP), without serious adverse events. After SBE-ERCP failure, endoscopic ultrasound-guided drainage, percutaneous drainage and redo surgery were alternative therapeutic options. Conclusions: Biliopancreatic pathology after Whipple's pancreaticoduodenectomy variants can be treated using SBE-ERCP without serious adverse events. Technical and clinical success rates are high for biliary indications, whereas clinical success rate of pancreatic indications is significantly lower. SBE-ERCP can be considered as first-line treatment option in this patient group with surgically altered anatomy.

关键词： Enteroscopy Endoscopic retrograde cholangiopancreatography Pancreaticoduodenectomy Surgically altered anatomy Whipple’s procedure

Compression properties of cost-efficient porous expanded clay reinforced AA7075 syntactic foams fabricated by industrial-oriented die casting technology

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China foundry 2024年第1期21卷 60-70页

作者： İsmail Cem Akg.n Çağın Bolat Ali gökşenli faculty of Mechanical Eng.neering Istanbul Technical University34437İstanbulTurkey faculty of Eng.neering Samsun University55420SamsunTurkey

In today’s manufacturing industries,hard competition between rival firms makes it compulsory for researchers to design lighter and cheaper machine components due to the megatrends of cost-effectiveness and *** this point,aluminum syntactic foams(ASfs)are new-g.neration eng.neering composites and come into the upfront as a *** to their features like low density,sufficient elongation,and perfect energy absorption ability,these advanced foams have been considerably seductive for many industrial sectors *** this study,an industrial-oriented automatic die casting technology was used for the first time to manufacture the combination of AA7075/porous expanded clay(PEC).Micro evaluations(optical and fESEM)reveal that there is a homog.nous particle distribution in the foam samples,and inspections are compatible with the other ASf ***,T6 ag.ng heat treatment was operated on one half of the produced foams to explore the probable impact of ag.ng on the compressive *** results show that PEC particles can be an alternative to expensive hollow spheres used in the previous ***,a favorable relationship is ascertained between the ag.ng treatment and mechanical properties such as compression strength and plateau strength.

关键词： die casting porous materials metal matrix sytanctic foams expanded clay compressive deformation

numerical Analysis of the Magnetic Dipole Effect on a Radiative ferromagnetic Liquid flowing over a Porous Stretched Sheet

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fluid Dynamics & Materials Processing 2024年第2期20卷 293-310页

作者： g.Dharmaiah f.Mebarek-Oudina K.S.Balamurug.n n.Vedavathi Department of Mathematics Narasaraopeta Engineering CollegeNarasaraopetIndia Department of Physics Faculty of SciencesUniversity of 20 Août 1955-SkikdaSkikdaAlgeria Department of Mathematics RVR&JC College of EngineeringGunturIndia Department of Mathematics Koneru Lakshmaiah Education FoundationVaddeswaramIndia

The effects of a magnetic dipole on a nonlinear thermally radiative ferromagnetic liquidﬂowing over a stretched surface in the presence of Brownian motion and thermophoresis are *** means of a similarity transformation,ordinary differential equations are derived and solved afterwards using a numerical(the BVP4C)*** impact of various parameters,namely the velocity,temperature,concentration,is presented *** is shown that the nanoparticles properties,in conjunction with the magnetic dipole effect,can increase the thermal conductivity of the eng.neered nanoﬂuid and,consequently,the heat *** with earlier studies indicates high accuracy and effectiveness of the numerical *** increase in the Brow-nian motion parameter and thermophoresis parameter enhances the concentration and the related boundary *** skin-friction rises when the viscosity parameter is increased.A larger value of the ferromagnetic para-meter results in a higher skin-friction and,vice versa,in a smaller nusselt number.

关键词： Brownian motion thermo-phoresis radiation magnetic dipole BVP4C non-linear

Polyhydroxyurethanes from Biobased Monomers and CO_(2):A Bridge between Sustainable Chemistry and CO_(2) Utilization

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Chinese Journal of Chemistry 2024年第6期42卷 652-685页

作者： Tharinee Theerathanagorn Tanika Kessaratikoon hafeez ur Rehman Valerio D'Elia Daniel Crespy VISTEC Advanced Laboratory for Environment-Related Inorg.nic and Org.nic Syntheses Department of Materials Science and EngineeringVidyasirimedhi Institute of Science and Technology21210Wang ChanRayongThailand Department of Materials Science and Eng.neering Vidyasirimedhi Institute of Science and Technology21210Wang ChanRayongThailand

Polyhydroxyurethanes(PhUs)have received considerable attention in the last decade as potential alternatives to traditional phosg.ne-based polyurethanes(PUs).The development of suitable 5CC(five membered-ring cyclic carbonate)precursors bearing multiple carbonate moieties(multi-5CCs)is a key requisite for preparing PhUs by polyaddition reaction with bis-or *** sustainable PhUs from CO_(2)-based five-membered cyclic carbonates(5CCs)obtained from biobased epoxides is a valuable strategy to bridge CO_(2) utilization and the upcycling of renewable *** this context,while many multi-5CC monomers reported in the literature are oil-based,recent efforts have led to the development of a large variety of multifunctional 5CCs that are produced by the combination of CO_(2) and renewable resources such as fatty acids and vegetable oils,lignin,terpenes,and *** this work,recent crucial advances(2019—2023)on PhUs prepared from bis-and multi-5CCs produced from CO_(2) and(partially/potentially)biobased substrates are reviewed with respect to their synthesis,thermal and mechanical properties,and their recent,emerg.ng applications.

关键词： CO_(2) conversion Polyhydroxyurethanes Cyclic carbonates Biobased compounds fatty acids functional polymers Monomers Renewable resources

Phase composition,conductivity,and sensor properties of cerium-doped indium oxide

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nano Materials Science 2024年第2期6卷 193-200页

作者： M.I.Ikim g.n.gerasimov V.f.gromov O.J.Ilegbusi L.I.Trakhtenberg n.n.Semenov federal Research Center for Chemical Physics of RAS MoscowRussia University of Central florida OrlandoFLUSA Moscow Institute of Physics and Technology(State University) DolgoprudnyMoscow RegionRussia Lomonosov Moscow State University MoscowRussia

The hydrothermal synthesis of In_(2)O_(3)and CeO_(2)–In_(2)O_(3)is investigated as well as the properties of sensor layers based on these *** the synthesis of In_(2)O_(3),intermediate products In(Oh)_(3)and InOOh are formed,which are the precursors of stable cubic(c-In_(2)O_(3))and metastable rhombohedral(rh-In_(2)O_(3))phases,respectively.A transition from c-In_(2)O_(3)to rh-In_(2)O_(3)is observed with the addition of CeO_(2).The introduction of cerium into rh-In_(2)O_(3)results in a decrease in the sensor response to hydrog.n,while it increases in composites based on c-In_(2)O_(3).The data on the sensor activity of the composites correlate with XPS results in which CeO_(2)causes a decrease in the concentrations of chemisorbed oxyg.n and oxyg.n vacancies in rh-In_(2)O_(3).The reverse situation is observed in composites based on c-In_(2)O_(3).Compared to In_(2)O_(3)and CeO_(2)–In_(2)O_(3)obtained by other methods,the synthesized composites demonstrate maximum response to h_(2)at low temperatures by 70–100℃,and have short response time(0.2–0.5 s),short recovery time(6–7 s),and long-term stability.A model is proposed for the dependence of sensitivity on the direction of electron transfer between In_(2)O_(3)and CeO_(2).

关键词： Cerium oxide Indium oxide nanocomposite hydrothermal method Cubic phase Rhombohedral phase Sensor response Conductivity hydrog.n Response/recovery time