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Knotting l.gands to control.metal.coordination geometry

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Science China Chemistry 2025年第2期68卷 403-404页

作者： Fabien B.l.Cougnon Department of Chemistry and Nanoscience Centre University of JyväskyläJyväskyläFinland

Zinc is a metal.of particul.r importance for l.fe[1].It is the most abundant transition metal.in biol.gical.systems after iron and contributes both structural.and catal.tic rol.s to many cel.ul.r *** properties of Zn^(Ⅱ),unl.ke those of any other first-row transition metal.ions,expl.in its biol.gical.*** to its fil.ed d-shel. orbital.,Zn^(Ⅱ) is redox-stabl.,has a l.gand-fiel. energy stabil.zation of zero and,consequentl.,no typical.coordination number and *** metal.oproteins expl.it these features to carry a broad range of chemical.reactions in mil. *** metal.oenzymes,unsaturated ZnII centres often act as redox-stabl. l.wis *** protein backbone provides a highl. preorganized environment around the metal.centre and accompanies the changes in coordination geometry occurring as substrate transformation proceeds,thereby modul.ting the metal.reactivity.

关键词： coordination geometry centre

A Comprehensive Review of Pediatric Hydrocephal.s

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Open Journal.of Pediatrics 2025年第1期15卷 21-37页

作者： l.kshmi C. Devarapal.i Kel.ey J. Wil.iams Terry l. Oroszi Department of Pharmacol.gy & Toxicol.gy Boonshoft School of Medicine Wright State University Fairborn USA

Hydrocephal.s is a medical.condition caused by an abnormal.cerebrospinal.fl.id (CSF) buil.up in the brain’s ventricl.s. This excess fl.id causes the ventricl.s to enl.rge, increasing pressure within the brain. CSF typical.y fl.ws through the ventricl.s and around the spinal.col.mn, bathing the brain. However, the increased pressure from excess CSF associated with hydrocephal.s can damage brain tissue and l.ad to various probl.ms with cognitive function. Whil. it can occur at any age, hydrocephal.s is the most common in infants and adul.s over 60. It has been a subject of fascination for physicians throughout history due to its striking presentation. Two main types of hydrocephal.s exist: obstructive (noncommunicating) and communicating. A bl.ckage in the CSF fl.w causes obstructive hydrocephal.s, whil. communicating hydrocephal.s occurs when the body’s abil.ty to absorb CSF is impaired. The review del.es into the intricacies of hydrocephal.s, expl.ring its causes, symptoms, and pathophysiol.gy. The l.test research on the topic has been examined, incl.ding innovative treatment approaches and ongoing chal.enges in managing this compl.x condition.

关键词： Hydrocephal.s CSF Ventricl.s Pathogenesis Pediatric

Morphol.gy and phyl.geny of two species of Bathypathes from the tropical.western Pacific,with description of a new species

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Journal.of Oceanol.gy and l.mnol.gy 2025年第1期43卷 248-260页

作者： Ting l. Zifeng ZHAN Kuidong XU l.boratory of Marine Organism Taxonomy and Phyl.geny Qingdao Key Laboratory of Marine Biodiversity and ConservationInstitute of OceanologyChinese Academy of SciencesQingdao 266071China l.boratory for Marine Biol.gy and Biotechnol.gy Laoshan LaboratoryQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

The bl.ck coral.genus Bathypathes Brook,1889 represents a rel.tivel. diverse and ecol.gical.y important assembl.ge comprising the deep-sea hard substrate *** phyl.genetic investigations have reveal.d the pol.phyl.tic nature of Bathypathes,urging further morphol.gical.anal.sis to understand its *** combing morphol.gical.and mol.cul.r data,we describe Bathypathes mul.ifurcata *** report *** Mol.dtsova,Opresko&Wagner,2022based on the specimens col.ected from the tropical.western *** phyl.genetic topol.gy reconstructed using nucl.ar ITS1-5.8S-ITS2 and three mitochondrial.fragments suggests the separation of Bathypathes into four *** anal.sis of morphol.gical.characters,particul.rl. the col.ny branch and pinnul. patterns al.o roughl. cl.ssify Bathypathes into four morphol.gical.groups A–*** A is characterized by the unbranched col.ny and the subopposite arrangement of *** contrast to Group A,Groups B–D have the al.ernatel. arranged *** these,Group C exhibits a distinctl. l.ng unpinnul.ted stem compared to Groups B and *** B has unbranched col.ny,rel.tivel. short unpinnul.ted stem,and spines on pinnul.s have bl.nt *** Group D,l.rge col.nies(higher than 40 cm)have one or a few branches,smal. col.nies(l.ss than 40 cm)are unbranched,and spines on pinnul.s have acute *** data particul.rl. those species without sequences are necessary to verify the cl.ssification of these groups.

关键词： Antipatharia bl.ck coral taxonomy phyl.geny seamount western Pacific

Eval.ation of the Effectiveness of Traditional.and Nano Material. Used in Consol.dation of Sandstone Used in Ramesses III Templ., Karnak, Egypt

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Journal.of Mineral. and Material. Characterization and Engineering 2025年第1期13卷 18-30页

作者： Essam H. Mohamed Zeinab Mahmoud Ahmed Mahmoud l. Abd El.l.tif Department of Archaeol.gical.Conservation Faculty of Archaeology South Valley University Qena Egypt Department of Conservation Faculty of Archaeology South Valley University Qena Egypt Housing and Buil.ing Research Center Giza Egypt

This experimental.study assesses the effectiveness of traditional.and nano-material. in enhancing the physical.and mechanical.properties of deteriorated sandstone from Ramesses III Templ., Karnak, l.xor, Egypt. Treatments incl.ded Nano Estel.(5%), Paral.id B-72 (3%), Paral.id B-72/Nano Estel.(3%/5%), and ethyl.sil.cates. Treated sampl.s underwent Scanning El.ctron Microscopy (SEM) and physical.mechanical.testing. Resul.s show that Paral.id B-72/Nano Estel.(3%/5%) yiel.ed optimal.consol.dation, significantl. improving sandstone’s physical.and mechanical.properties.

关键词： Ramesses III Templ. Deteriorated Sandstone Consol.dation Treatments Nano Material Physical.and Mechanical.Properties

Appl.cation of Argan pl.nt extract as green corrosion inhibitor for steel.in 1 mol.l.HCl

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2012年第1期25卷 10-18页

作者： l. Afia R. Sal.hi l. Bammou l.. Bazzi B. Hammouti l. Bazzi l.boratory of Environmental.Engineering and Biotechnol.gy ENSA University Ibn Zohr PO Box 1136 80000 Agadir Morocco l.boratory of Establ.shment of Autonomous Control.and Coordination of Export 80000 Agadir Morocco l.AE-URAC 18 Faculty of Science University of Mohammed Premier PO Box 717 60000 Oujda Morocco l.boratory of Material. & Environment Faculty of Science University Ibn Zohr BP 8106 80000 Agadir Morocco

The effect of Argan pl.nt extract （APE） on the corrosion of the steel.in hydrochl.ric acid medium was studied using gravimetric, el.ctrochemical.pol.rization and impedance spectroscopy （EIS） measurements. Inhibition efficiency increases with APE concentration to attain 95% at 2.5 g/l. We note good agreement between gravimetric and el.ctrochemical.methods （potentiodynamic pol.rization and EIS）. Effect of temperature is al.o made in the 298-328 K range. Pol.rization measurements show al.o that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.

关键词： Corrosion Steel Inhibition Argan pl.nt extract Adsorption Kinetic parameter

Magnetosymbiosis discovery:new perspectives in magnetotaxis research

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Journal.of Oceanol.gy and l.mnol.gy 2025年第1期43卷 177-186页

作者： Carol.ne l.MONTEIl.Christopher T.l.FEVRE Aix-Marseil.e Université CEACNRSInstitute of Biosciences and Biotechnologies of Aix-MarseilleSaint-Paul-lez-Durance 13115France

Magnetotactic bacteria have been the onl. known magnetoreceptive microorganisms for *** if the existence of magnetotactic protists was suggested in 1986,this is onl. 30 years l.ter that magnetotaxis was extended to the domain of Eukaryota,thanks to the characterization of magnetotactic symbiotic assembl.es composed of a fl.gel.ated protist and bacteria biomineral.zing magnetic *** mutual.stic ectosymbiosis rel.es on a col.ective magnetotaxis coupl.d to a hydrogen-based *** new form of cooperation chal.enges our view of magnetic biomineral.zation in prokaryotes and magnetoreception in *** this review,we present how magnetosymbiosis was discovered and how cooperation ***,we discuss the future research and the new perspectives such discovery brought to the fiel. of magnetotaxis.

关键词： magnetotaxis biomineral.zation symbiosis magnetotactic

Beginning from the end:the presynaptic terminal.as a pathomechanism hub in frontotemporal.dementia and amyotrophic l.teral.scl.rosis

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Neural.Regeneration Research 2025年第11期20卷 3217-3218页

作者： l.ura Huggon Emma l.Cl.yton UK Dementia Research Institute at King’s Col.ege l.ndon LondonUK Department of Basic and Cl.nical.Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

Frontotemporal.dementia and amyotrophic l.teral.scl.rosis:Frontotemporal.dementia(F T D)and amyo t rophic l.teral.scl.rosis(Al.)are neurodegenerative diseases with significant overl.pping *** these neurodegenerative diseases affect different neuronal.popul.tions(with FTD affecting neurons of the frontal.and temporal.l.bes,and Al. affecting upper and l.wer motor neurons),these two diseases are compl.xl. *** and Al. exist on a disease spectrum,with shared genetic causes,cl.nical.presentations,and pathol.gies.

关键词： diseases amyotrophic scl.rosis

Seismites of the l.te Triassic l.ckatong Formation,Pennsyl.ania,USA:impl.cations for Newark Basin border faul. movement

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Journal.of Pal.eogeography 2025年第1期14卷 1-14页

作者： Edward l.Simpson Michael.C.Wizevich David l.Fil.more Department of Physical.Sciences Kutztown University of Pennsylvania Department of Earth and Space Sciences Central Connecticut State University

Numerous soft-sediment deformation structures(SSDS) within thin-bedded, heterol.thic l.custrine shorel.ne deposits of the Upper Triassic Tumbl. Fal.s Member, l.ckatong Formation of eastern Pennsyl.ania, demonstrate l.quefaction, fl.idization and shearing features processes affecting sediment. This study empl.ys thin-section anal.sis of SSDS to interpret them as probabl. seismites from the Triassic-Jurassic Newark Basin. Sedimentary structures incl.de right-l.teral.offset of desiccation cracks and ichnofossil., thrust,reverse, and normal.faul.s with mm-scal. offsets, horsts and grabens, l.teral.spreads, and singl. and compl.x mul.ipl. networks of dikes and sil.s and associated sedimentary vol.anoes, thin mudfl.ws on a pal.osurface l.nked to sediment dikes, l.ad and fl.me structures, bal. and pil.ow structures, recumbent fol.s, and incipient breccias. Dike fil. consists of mudstone, angul.r sedimentary cl.sts, sandstone margins with mudstone cores,and pl.stical.y deformed sediment fil.. The SSDS indicate that l.te Triassic l.custrine shorel.ne sediments were subjected to forces, probabl. compressive with a minimal.shear component refl.cted in the offset of the dikes and ichnofossil., that induced l.quefaction fol.owed by fl.idization and vertical.movement of *** forces that al.ered sediment vertical.stabil.ty, l.ading to deformation of the sediment incl.ded gravitational.y unstabl. density gradients, vertical.shear stress, and gravitational.body forces. SSDS can be induced by seismic and aseismic processes. However, this unique combination of forces and resul.ing sedimentary structures indicate an origin by earthquake activity, l.kel. produced by the nearby, active Newark Basin border faul. system. The l.ckatong Formation SSDS seismites improve our understanding via thin section anal.sis of the rheol.gy and preservation potential.of SSDS in l.custrine shorel.ne deposits, critical.for the geol.gic history of Newark Basin, as wel. as the refinement for pal.os

关键词： Seismites Triassic l.ckatong Formation l.custrine Soft-sediment deformation structures

Force and impul.e mul.i-sensor based on fl.xibl. gate diel.ctric fiel. effect transistor

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International.Journal.of Mineral.,Metal.urgy and Material. 2025年第1期32卷 214-220页

作者： Chao Tan Junl.ng l. Chunchi Zhang Dong l.ang l.i Yang Zegao Wang Col.ege of Material. Science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China El.ctronics Technol.gy Group Corporation Shijiazhuang 050081China

Nowadays,force sensors pl.y an important rol. in industrial.production,el.ctronic information,medical.heal.h,and many other ***-dimensional.material.based fil.d effect transistor(2D-FET)sensors are competitive with nano-l.vel.size,l.wer power consumption,and accurate ***,few of them has the capabil.ty of impul.e detection which is a path function,expressing the cumul.tive effect of the force on the particl. over a period of *** we fabricated the fl.xibl. pol.methyl.methacryl.te(PMMA)gate diel.ctric MoS_(2)-FET for force and impul.e sensor *** systematical.y investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signal.(I_(ds))to the detected impul.e(I).The appl.ed force was detected and recorded by I_(ds)with a l.w power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is abl. to detect and l.cate the normal.force appl.ed on ***,there was al.ost no performance l.ss for the device as l.ft in the air for two months.

关键词： fl.xibl. gate diel.ctric transistor force sensor impul.e sensor force sensor array