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In Situ Mineralization of.Biomass-Derived Hydrogels Boosts Capacitive Electrochemical Energy Storage in f.ee-Standing 3D Carbon Aerogels

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Energy & Environmental Materials 2024年第2期7卷 359-371页

作者： Anjali Achazhiyath Edathil Babak Rezaei Kristof.er Almdal stephan.Sylνest Keller National Centre f.r Nano f.brication and Characterization DTU NanolabTechnical University of Denmark2800LyngbyDenmark DTU Chemistry Technical University of Denmark2800LyngbyDenmark

Here,a novel f.brication method f.r making f.ee-standing 3D hierarchical porous carbon aerogels f.om molecularly engineered biomass-derived hydrogels is *** situ f.rmed f.ower-like CaCO_(3)molecularly embedded within the hydrogel network regulated the pore structure during in situ mineralization assisted one-step activation graphitization(iMAG),while the intrinsic structural integrity of.the carbon aerogels was *** homogenously distributed minerals simultaneously acted as a hard template,activating agent,and graphitization *** decomposition of.the homogenously distributed CaCO_(3)during iMAG f.llowed by the etching of.residual CaO through a mild acid washing endowed a robust carbon aerogel with high porosity and excellent electrochemical *** 0.5 mA cm^(-2),the gravimetric capacitance increased f.om 0.01 f.g^(-1)without mineralization to 322 f.g^(-1)with iMAG,which exceeds values reported f.r any other f.ee-standing or powder-based biomass-derived carbon *** outstanding cycling stability of.104%af.er 1000 cycles in 1 M HClO4 was *** assembled symmetric supercapacitor device delivered a high specif.c capacitance of.376 f.g^(-1)and a high energy density of.26 W h kg^(-1)at a power density of.4000 W kg^(-1),with excellent cycling perf.rmance(98.5%retention af.er 2000 cycles).In combination with the proposed 3D printed mold-assisted solution casting(3DMASC),iMAG allows f.r the generation of.f.ee-standing carbon aerogel architectures with arbitrary ***,the novel method introduces f.exibility in constructing f.ee-standing carbon aerogels f.om any ionically cross-linkable biopolymer while maintaining the ability to tailor the design,dimensions,and pore size distribution f.r specif.c energy storage applications.

关键词： biomass carbon aerogel sustainable energy materials f.ee-standing supercapacitors

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Inner-shell ionization cross sections of.atoms by positron impact

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Communications in Theoretical Physics 2024年第6期76卷 142-147页

作者： Yuan-Cheng Wang Jia Ma Li-Guang Jiao stephan.f.itzsche College of.Physical Science and Technology Shenyang Normal UniversityShenyang 110034China Helmholtz-Institut Jena D-07743 JenaGermany GSI Helmholtzzentrum f.r Schwerionenf.rschung GmbH D-64291 DarmstadtGermany College of.Science Shenyang Aerospace UniversityShenyang 110136China College of.Physics Jilin UniversityChangchun 130012China Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena07743 JenaGermany

The relativistic binary-encounter-Bethe model with Wannier-type threshold law is employed to obtain the inner-shell ionization cross sections of.multi-electron atoms(Ni,Cu,Y,Ag,Au,Yb,Ta,and Pb)f.r positron impact energies f.om the thresholds up to 105ke *** is good agreement between the present calculations and the experimental *** constant in the acceleration term derived f.om the Wannier law is determined to be 0.2 and 0.5 f.r the K-and L-shells,respectively.

关键词： positron scattering ionization cross section binary-encounter-Bethe model

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Superatom-assembled boranes,carboranes,and low-dimensional boron nanomaterials based on aromatic icosahedral B_(12)and C_(2)B_(10)

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Nano Research 2024年第7期17卷 6734-6740页

作者： Qiao-Qiao yan yan-f.ng Wei Qiang Chen Yue-Wen Mu Si-Dian Li Institute of.Molecular Science Shanxi UniversityTaiyuan 030006China

Using the experimentally known aromatic icosahedral superatoms I_(h)B_(12)H_(12)2−and D_(5d)1,12-C_(2)B_(10)H_(12)as building blocks and based on extensive density f.nctional theory calculations,we predict herein a series of.core–shell superpolyhedral boranes and carboranes in a bottom-up approach,including the high-symmetry Th B_(12)@B_(152)H_(72)2−(2),C2h C_(2)B_(10)@B_(152)H_(72)(3),D_(3d)B_(12)@B_(144)H_(66)(4),I_(h)B_(12)@C_(24)B_(12)0H_(72)2−(6),and D_(5d)C_(2)B_(10)@C_(24)B_(12)0H_(72)(7).More interestingly,the superatom-assembled linear D2h B_(36)H_(32)^(2−)(8),close-packed planar D_(3d)B_(84)H_(60)^(2−)(10),and nearly close-packed core−shell D_(3d)B_(12)@B144H_(6)6(4)can be extended periodically to f.rm the one-dimensional(1D)α-rhombohedral borane nanowire B_(12)H_(10)(Pmmm)(9),two-dimensional(2D)α-rhombohedral monolayer borophane B_(12)H_(6)(P m1)(11),and the experimentally known three-dimensional(3D)α-rhombohedral boron(R m)(12)which can be viewed as an assembly of.the monolayer B_(12)H_(6)(11)staggered in vertical direction,setting up a bottom-up strategy to f.rm low-dimensional boron-based nanomaterials f.om their borane“seeds”via partial or complete *** bonding analyses indicate that the high stability of.these nanostructures originates f.om the spherical aromaticity of.their icosahedral B_(12)or C_(2)B_(10)structural units which possess the universal skeleton electronic conf.guration of.1S21P61D101f. f.llowing the Wade’s n+1 *** inf.ared(IR)and Raman spectra of.the most-concerned neutral B_(12)@B144H_(6)6(4)and C_(2)B_(10)@C_(24)B_(12)0H_(72)(7)are computationally simulated to f.cilitate their experimental characterizations.

关键词： superatom-assembling bottom-up approach density f.nctional theory superpolyhedral boranes superpolyhedral carboranes borophanes

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Histological,transcriptomic,and gene f.nctional analyses reveal the regulatory events underlying gibberellin-induced parthenocarpy in tomato

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Horticultural Plant Journal 2024年第1期10卷 156-170页

作者： Shaobo Niu Yu He Siwei yan Zhengliang Sun Run Cai yan Zhang Shaanxi Engineering Research Center f.r Vegetables College of HorticultureNorthwest A&F UniversityYanglingShaanxi 712100China

Gibberellin(GA)is one of.the major plant hormones that promote parthenocarpy,a highly valuable agronomic ***,we demonstrated that exogenous GA3application triggered the f.rmation of.parthenocarpic f.uits with smaller size but unchanged shape in tomato(Solanum lycopersicum).These f.uits exhibited a thicker pericarp,undeveloped ovules,and f.w jelly tissues,leading to smaller locules with empty *** investigation showed that GA treatment produced more cell layers with larger cells in the pericarp,suggesting its promotion in both cell division and *** analyses between GA-3and mock-treated unpollinated ovaries/f.uits identif.ed a large number of.dif.erentially expressed genes related to hormones,cell division,cell expansion,and transcription f.ctors,implying that they coordinately regulated parthenocarpy conf.rred by *** particular,the downregulation of.f.ve reported repressors of.tomato parthenocarpy,including two auxin signaling components,AUXIN RESPONSE f.CTOR5(SlARf.)and Sl ARf.,and three MADS-box genes,TOMATO APETALA3(TAP3),TOMATO PISTILLATA(TPI),and AGAMOUS-LIKE6(SlAGL6),af.er GA treatment might play a key role in this ***,we f.und that the knockdown of.a GA signaling f.ctor SlMYB33,which was depressed by GA treatment,induced parthenocarpic f.uit set in tomato,an ef.ect that might have been achieved by enhancing GA biosynthesis and decreasing the expression of.some repressors of.tomato ***,our results provide a basis f.r understanding the regulatory mechanism of.GA in tomato parthenocarpy.

关键词： Tomato Gibberellin Parthenocarpy Histology Transcriptome SlMYB33

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Ef.ects of.dif.erent concentrations of.nicotinamide on hematopoietic stem cells cultured in vitro

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World Journal of.Stem Cells 2024年第2期16卷 163-175页

作者： yan Ren yan-Ni Cui Hong-Wei Wang The Second Clinical Medical College Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of.Hematology The Second Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of.Hematology Key Laboratory of Molecular Diagnosis and Treatment of Blood Diseases in Shanxi ProvinceTaiyuan 030001Shanxi ProvinceChina

BACKGROUND In vitro expansion to increase numbers of.hematopoietic stem cells(HSCs)in cord blood could improve clinical ef.icacy of.this vital ***(NAM)can promote HSC expansion ex vivo,but its ef.ect on hematopoietic stem and progenitor cells(HSPCs,CD34^(+)CD38)and f.nctional subtypes of.HSCs-shortterm repopulating HSCs(ST-HSCs,CD34^(+)CD38CD45RACD49f.(+))and long-term repopulating HSCs(LT-HSCs,CD34^(+)CD38CD45RACD49f.(+)CD90^(+))is not yet *** a sirtuin 1(SIRT1)inhibitor,NAM participates in regulating cell adhesion,polarity,migration,prolif.ration,and ***,SIRT1 exhibits dual ef.ects by promoting or inhibiting dif.erentiation in dif.erent tissues or *** propose that the concentration of.NAM may inf.uence prolif.ration,dif.erentiation,and SIRT1 signaling of.*** To evaluate the ef.ects and underlying mechanisms of.action of.dif.erent concentrations of.NAM on HSC prolif.ration and *** CD34^(+)cells were purif.ed f.om umbilical cord blood using MacsCD34 beads,and cultured f.r 10-12 d in a serum-f.ee medium supplemented with cytokines,with dif.erent concentrations of.NAM added according to experimental *** cytometry was used to detect phenotype,cell cycle distribution,and apoptosis of.the cultured ***-time polymerase chain reaction was used to detect the transcription levels of.target genes encoding stemness-related f.ctors,che mokines,components of.hypoxia pathways,and antioxidant ***-dihydro-f.uorescein diacetate probes were used to evaluate intracellular production of.reactive oxygen species(ROS).Determination of.the ef.ect of.dif.erent culture conditions on the balance of.cytokine by cytometric bead *** Compared with the control group,the proportion and expansion f.lds of.HSPCs(CD34^(+)CD38)incubated with 5 mmol/L or 10 mmol/L NAM were signif.cantly increased(all Pf.ld expansion of.the 5 mmol/L NAM group were signif.cantly

关键词： Hematopoietic stem cells Nicotinamide Concentration Prolif.ration Dif.erentiation Sirtuin 1

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A review:the mechanism of.plant-derived polysaccharides on osteoblasts and osteoclasts

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未来食品学报(英文) 2024年第3期4卷 183-192页

作者： Mengjie Ren Adel f.Ahmed Meng Li Menghan Li Zhiruo yan Jinmei Wang National R&D Center f.r Edible f.ngus Processing Technology Henan UniversityKaifeng 475004China Joint International Research Laboratory of.f.od&Medicine Resource f.nction Henan ProvinceKaifeng 475004China Medicinal and Aromatic Plants Researches Department Horticulture Research InstituteAgricultural Research CenterGiza 12511Egypt

Bone loss and deterioration of.bone microarchitecture would increase the bone f.agility and f.acture risk,leading to the *** and more evidences proved that plant-derived polysaccharides could have a remarkable inf.uence on osteoblasts and osteoclasts,exerting anti-osteoporosis *** to the previous research,the extract of.Cibotium barumoz,Achyranthes bidentata,Curculigo orchioides,Epimedium brevicornum,Angelica sinensis,Polygonatum sibiricum,Dendrobium of.icinale,Morinda of.icinalis,Nelumbo mucif.ra,Diospyros kaki,Hordeum vulgare,Cistanche deserticola,Commiphora Myrrha and other plant-derived polysaccharides could benef.t to the osteoblasts and *** essential mechanisms are mainly related to the activation or inhibition of.many f.ctors,including runt-related transcription f.ctor 2(Runx2),B-catenin,osterix(Osx),activator protein-1(AP-1),osteocalcin(OCN/BGP),alkaline phosphatase(ALP),osteopontin(OPN),bone morphogenetic protein(BMP),phosphatidylinositol 3-kinase(PI3K)/C-Jun N-terminal kinase(JNK)/extracellular regulated protein kinase(ERK),osteoprotegerin(OPG),receptor activator of.nuclear f.ctor-kB(RANK),monocyte/macrophage colony-stimulating f.ctor(M-CSf.,tumor necrosis f.ctor receptor-associated f.ctor 6(TRAf.6),receptor activator of.nuclear f.ctor(Nf.-KB ligand(RANKL),nuclear f.ctor of.activated T cells 1(Nf.Tc1),c-f.s,matrix metallopeptidase-9(MMP-9),glycogen synthase kinase 3β(GSK3B)/B-catenin,nuclear f.ctor E2-related f.ctor 2(Nf.),as well as these related pathways,such as Wnt/p-catenin,BMP-2/SMAD1/5/8,PI3K/AKT,OPG/RANKL/RANK,Nf.κB,MAPKs,*** plant-derived polysaccharides could improve the dynamic balance of.bone f.rmation and resorption through promoting the dif.erentiation and maturation of.osteoblast or inhibiting its *** reviewed plant-derived polysaccharides and their regulating mechanisms on the osteoclasts and osteoblasts provide the evidences f.r the development of.osteoporosis therapeutics.

关键词： Osteoporosis Plant-derived polysaccharides Osteogenesis promotion Osteoclasts inhibition

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SCAB1 coordinates sequential Ca^(2+) and ABA signals during osmotic stress induced stomatal closure in Arabidopsis

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Science China(Lif. Sciences) 2024年第1期67卷 1-18页

作者： Tianren Zhang Li Bai yan Guo State Key Laboratory of.Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing 100193China

Hyperosmotic stress caused by drought is a detrimental threat to plant growth and agricultural productivity due to limited water *** are gateways of.transpiration and gas exchange,the swif. adjustment of.stomatal aperture has a strong inf.uence on plant drought *** intensive investigations of.stomatal closure during drought stress in past decades,little is known about how sequential signals are integrated during complete ***,we discovered that the rapid Ca^(2+) signaling and subsequent abscisic acid(ABA)signaling contribute to the kinetics of.both f.actin reorganizations and stomatal closure in Arabidopsis thaliana,while STOMATAL CLOSURE-RELATED ACTIN BINDING PROTEIN1(SCAB1)is the molecular switch f.r this entire *** the early stage of.osmotic shock responses,swif. elevated calcium signaling promotes SCAB1 phosphorylation through calcium sensors CALCIUM DEPENDENT PROTEIN KINASE3(CPK3)and *** phosphorylation restrained the microf.lament binding af.inity of.SCAB1,which bring about the f.ctin disassembly and stomatal closure *** the osmotic stress signal continued,both the kinase activity of.CPK3 and the phosphorylation level of.SCAB1 attenuated *** f.rther f.und that ABA signaling is indispensable f.r these attenuations,which presumably contributed to the actin f.lament reassembly process as well as completion of.stomatal ***,the dynamic changes of.SCAB1 phosphorylation status are crucial f.r the kinetics of.stomatal *** together,our results support a model in which SCAB1 works as a molecular switch,and directs the microf.lament rearrangement through integrating the sequentially generated Ca^(2+) and ABA signals during osmotic stress induced stomatal closure.

关键词： calcium signal ABA stomatal movement microf.laments kinase

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A New Encrypted Traf.ic Identif.cation Model Based on VAE-LSTM-DRN

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Computers, Materials & Continua 2024年第1期78卷 569-588页

作者： Haizhen Wang Jinying yan Na Jia College of.Computer and Control Engineering Qiqihar UniversityQiqihar161006China Heilongjiang Key Laboratory of.Big Data Network Security Detection and Analysis Qiqihar UniversityQiqiharChina

Encrypted traf.ic identif.cation pertains to the precise acquisition and categorization of.data f.om traf.ic datasets containing imbalanced and obscured *** extraction of.encrypted traf.ic attributes and their subsequent identif.cation presents a f.rmidable *** existing models have predominantly relied on direct extraction of.encrypted traf.ic data f.om imbalanced datasets,with the dataset’s imbalance signif.cantly af.ecting the model’s *** the present study,a new model,ref.rred to as UD-VLD(Unbalanced Dataset-VAE-LSTM-DRN),was proposed to address above *** proposed model is an encrypted traf.ic identif.cation model f.r handling unbalanced *** encoder of.the variational autoencoder(VAE)is combined with the decoder and Long-short term Memory(LSTM)in UD-VLD model to realize the data enhancement processing of.the original unbalanced *** enhanced data is processed by transf.rming the deep residual network(DRN)to address neural network gradient-related ***,the data is classif.ed and *** UD-VLD model integrates the related techniques of.deep learning into the encrypted traf.ic recognition technique,thereby solving the processing problem f.r unbalanced *** UD-VLD model was tested using the publicly available Tor dataset and VPN *** UD-VLD model is evaluated against other comparative models in terms of.accuracy,loss rate,precision,recall,f.-score,total time,and ROC *** results reveal that the UD-VLD model exhibits better perf.rmance in both binary and multi classif.cation,being higher than other encrypted traf.ic recognition models that exist f.r unbalanced ***,the evaluation perf.rmance indicates that the UD-VLD model ef.ectivelymitigates the impact of.unbalanced data on traf.ic *** can serve as a novel solution f.r encrypted traf.ic identif.cation.

关键词： Data enhancement LSTM deep residual network VAE

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A new nonf.llerene acceptor with an extended π conjugation core enables ternary organic solar cells approaching 19%ef.iciency

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Nano Research 2024年第5期17卷 4062-4068页

作者： Chunyan Liu Nailiang Qiu Zhengjin Li yan Lu School of.Materials Science and Engineering Tianjin Key Laboratory for Photoelectric Materials and DevicesKey Laboratory of Display Materials and Photoelectric DevicesMinistry of EducationTianjin University of TechnologyTianjin 300384China School of.Chemistry Chemical Engineering and MaterialsJining UniversityQufu 273155China

In organic solar cells(OSCs),it is an ef.ective way to improve the power conversion ef.iciency(PCE)by adding a guest component with appropriate absorption and energy levels in the host ***,a new nonf.llerene acceptor(Nf.)named TBf.2Cl was developed by the strategy of.expanding theπconjugated core of.2,2’-(((4,4,9,9-tetrahexyl-4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene-2,7-diyl)bis(methaneylylidene))bis(5,6-dichloro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(IDT-4Cl)with two benzene *** increase of.benzene units,TBf.2Cl exhibits higher lowest unoccupied molecular orbital(LUMO)level of.3.75 eV than that of.one benzene unit based Nf. IDT-4Cl and f.uorene core based Nf. f.2Cl,which f.cilitates enhancing the open-circuit voltage(V_(oc))of.ternary ***,TBf.2Cl f.lm shows a medium optical bandgap with the absorption range f.om 500-800 nm,being well complementary with the wide bandgap polymer donor D18 and narrow bandgap Nf. ***,a remarkable PCE of.18.92%with a high short-circuit current density(J_(sc))of.27.40 mA·cm^(-2),a f.ll f.ctor(f.)of.0.749,especially an outstanding V_(oc) of.0.922 V was achieved f.r the optimal ternary device based on D18:TBf.2Cl:CH-6f.surpassing the binary counterpart(17.08%).The f.ndings provide insight into the development of.new guest acceptors f.r obtaining more ef.icient OSCs.

关键词： medium optical bandgap high lowest unoccupied molecular orbital(LUMO)level the third component ternary organic solar cell high open-circuit voltage

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Molecular packing tuning via chlorinated end group enables ef.icient binary organic solar cells over 18.5%

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Carbon Energy 2024年第3期6卷 196-203页

作者： Yaf.ng Li Zhenyu Chen Xingzheng yan Ziyi Ge Zhejiang Business Technology Institute NingboZhejiangChina Zhejiang Engineering Research Center f.r Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiangChina Center of.Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina

Designing novel nonf.llerene acceptors(Nf.s)is of.vital importance f.r the development of.organic solar cells(OSC).Modif.cation on the side chain and end group are two powerf.l tools to construct ef.icient ***,based on the high-perf.rmance L8BO,we selected 3-ethylheptyl to substitute the inner chain of.2-ethylhexyl,obtaining the backbone of.*** we introduced dif.erent halogen atoms of.f.uorine and chlorine on 2-(3-oxo-2,3-dihydro-1Hinden-1-ylidene)malononitrile end group(EG)to construct ef.icient Nf.s named BON3-f.and BON3-Cl,*** donor D18 was chosen to combine with two novel Nf.s to construct OSC ***,D18:BON3-Cl-based device shows a remarkable power conversion ef.iciency(PCE)of.18.57%,with a high open-circuit voltage(V_(OC))of.0.907 V and an excellent f.ll f.ctor(f.)of.80.44%,which is one of.the highest binary PCE of.devices based on D18 as the ***,BON3-f.based device shows a relatively lower PCE of.17.79%with a decreased f. of.79.05%.The better photovoltaic perf.rmance is mainly attributed to the red-shif.ed absorption,higher electron and hole mobilities,reduced charge recombination,and enhanced molecular packing in the D18:BON3-Cl ***,we perf.rmed stability tests on two binary systems;the D18:BON3-Cl and D18:BON3-f.devices maintain 88.1%and 85.5%of.their initial ef.iciencies af.er 169 h of.storage at 85°C in an N2-f.lled glove box,*** work demonstrates the importance of.selecting halogen atoms on EG and provides an ef.icient binary system of.D18:BON3-Cl f.r f.rther improvement of.PCE.

关键词： binary organic solar cell chlorinated end group molecular packing

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