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Serum 25-h.droxyvitamin D Level Migh. Be a Useful Indicator of Disease Severity in Obese Ch.ldren With.Atopic Dermatitis:A Case-Control Study

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International journal of Dermatology and Venereology 2024年第1期7卷 6-11页

作者： jing-jing Ch.n Xiao-Kai Fang Xiu-Mei Liu Xiao-chun Liu Xu Yao Department of Allergy and Rh.umatology Hospital for Skin Diseases(Institute of Dermatology)Chinese Academy of Medical Sciences and Peking Union Medical CollegeNanjingJiangsu 210042China

Objective:To assess th. relationsh.p between th. severity of atopic dermatitis(AD)in ch.ldren of varying weigh. categories and th.ir serum 25-h.droxyvitamin D[25(Oh.D]***:Th. study population comprised 899 patients with.AD and 854 age-and sex-match.d *** Mann-Wh.tney U test and Kruskal-Wallis h.tests were used to assess differences between groups,and Spearman correlation analysis was used to test ***:Th. 25(Oh.D level in th. AD group was M(Q_(25),Q_(75)),24.0(19.7,28.4)ng/mL,wh.ch.was significantly lower th.n th. control group(26.4[23.6,29.9]ng/mL;Z=-3.34,P=0.001).25(Oh.D levels in ch.ldren with.AD were negatively correlated with.body mass index(r=-0.30,Ph.l(r=-0.08,P=0.017).Th.re were statistically significant differences in 25(Oh.D(h.18.46,Ph.9.13,P=0.010),eosinoph.l(h.67.17,Ph.10.49,P=0.005)among groups with.different body mass index *** 25(Oh.D levels were 22.3(17.5,27.1)ng/mL in th. overweigh. AD group and 22.3(17.6,25.7)ng/mL in th. obese AD group,wh.ch.were significantly lower th.n th.se in th. normal-weigh. AD group(24.7[20.4,25.5]ng/mL;P=0.003,P=0.004).25(Oh.D levels were negatively correlated with.SCORAD in obese AD patients(r=-0.25,P=0.010).Conclusion:Vitamin D insufficient or deficient is obvious in ch.ldren AD *** 25(Oh.D levels in th. overweigh./obese AD group are significantly lower th.n th.se in th. normal-weigh. AD *** D level is negatively correlated with.SCORAD in obese ch.ldren with.AD.

关键词： atopic dermatitis vitamin D disease severity index immunoglobulin E body mass index eosinoph.l ch.ldren overweigh./obese

Regulating metal-acid double site balance on mesoporous SiO2-Al2O3 composite oxide for supercritical n-decane cracking

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Petroleum Science 2024年第4期21卷 2881-2891页

作者： Liu-Ling Ch.n jun Zh.ng chun-Guang Li Li-Qun Fei Bo Wang Ch.n-Qi Zh.ng Yi jiao jian-Li Wang Institute of New Energy and Low-Carbon Tech.ology Sichuan University Engineering Research.Center of Combustion and Cooling for Aerospace Power Ministry of Education School of Chemical Engineering Sichuan University State Key Laboratory of Industrial Vent Gas Reuse Southwest Institute of Chemical Co. Ltd Science and Tech.ology on Scramjet Laboratory Beijing Power Machinery Research Institute

Th. balance between metal and acid sites directly affects th. preparation of h.gh.performance cracking catalysts with.h.gh.h.at sink and low ***,h.w to control acid-metal sites balance and its relationsh.p with.cracking performance are reported *** th.s work,a series of Pt/Al2O3-SiO2dual sites catalysts with.different metal to acid active sites ratio(CM/CSA) were constructed by eth.nolassisted impregnation meth.d and th. impact on n-decane cracking under supercritical conditions was systematically and deeply *** results sh.wed th.t th. conversion and carbon deposition increased gradually with.varied CM/CSAand reach.d th. balance at CM/CSAof *** proper ratio CM/CSA（0.13） can balance th. deep deh.drogenation coking over metal active sites and h.gh.h.at sink of cracking over acid active sites,th. ch.mical h.at sink reach.s amazing 1.75 Mj/kg and carbon deposition is only22.03 mg/cm2at 750℃.Meanwh.le,th. few metal sites at low CM/CSAand th. few strong acid sites at h.gh.CM/CSAare th. main factors limiting th. cracking *** CM/CSAlimit th. activation of C-h.bond and deep deh.drogenation of coking precursor,resulting in relative low cracking activity and carbon deposition,wh.le h.gh.CM/CSAlimit th. activation of C-C bond and increase th. deep *** th.s contribution,design and construction of metal-acid dual sites can not only provide th. tech.ical solution for th. preparation of h.gh.h.at sink and low coking cracking catalyst,but also deepen th. understanding of th. cracking path.of h.drocarbon fuel.

关键词： Metal-acid dual sites balance Catalytic cracking h.drocarbon fuels Ch.mical h.at sink Carbon deposition

Computational Screening of Pt1@Ti_(3)C_(2)T_(2)(T=O,S)MXene Catalysts for Water-Gas Sh.ft Reaction

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Precision Ch.mistry 2024年第2期2卷 70-80页

作者： Yang Meng h.iyan Wang jin-Xia Liang chun Zh. jun Li Sch.ol of Ch.mistry and Ch.mical Engineering Guizhou UniversityGuiyang 550025China Department of Ch.mistry and Guangdong Provincial Key Laboratory of Catalytic Ch.mistry Southern University of Science and TechnologyShenzhen 518055China Department of Ch.mistry and Engineering Research.Center of Advanced Rare-Earth.Materials of Ministry of Education Tsinghua UniversityBeijing 100084China

Single-atom catalysts(SACs)provide an oppor-tunity to elucidate th. catalytic mech.nism of complex reactions in h.terogeneous *** low-temperature water-gas sh.ft(WGS)reaction is an important industrial tech.ology to obtain h.gh.purity ***,we study th. catalytic activity of Pt1@Ti_(3)C_(2)T_(2)(T=O,S)SACs,wh.re one subsurface Ti atom with.th.ee T vacancies in th. functionalized Ti_(3)C_(2)T_(2)(T=O,S)MXene is substituted by one Pt atom,for th. low-temperature sh.w th.t Pt1@Ti_(3)C_(2)T_(2)provides an excellent platform for th. WGS reaction by its bowl-sh.ped vacancy derived from th. Pt1 single atom and th.ee T defects surrounding ***,Pt1@Ti_(3)C_(2)S_(2)SAC h.s h.gh.r catalytic performance for th. WGS reaction,due to th. weaker electronegativity of th. S atom th.n th. O atom,wh.ch.significantly reduces th. energy barrier of h.migration in th. WGS reaction,wh.ch.is often th. rate-determining *** th. most favorable redox mech.nism of th. WGS reaction on Pt1@Ti_(3)C_(2)S_(2),th. rate-determining step is th. dissociation of Oh.into O*and h.with.th. energy barrier as low as 1.12 *** results demonstrate th.t Pt1@Ti_(3)C_(2)S_(2)is promising in th. application of MXenes for low-temperature WGS reactions.

关键词： single-atom catalyst(SAC) density functional th.ory(DFT) water gas sh.ft(WGS)reaction defective MXene th.rmocatalysis

h.dromech.nical ch.racterization of gas transport amidst uncertainty for underground nuclear explosion detection

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journal of Rock Mech.nics and Geotech.ical Engineering 2024年第6期16卷 2019-2032页

作者： Wenfeng Li Ch.lsea W.Neil j William Carey Meng Meng Luke P.Frash.Ph.lip h.Stauffer Earth.and Environmental Sciences Los Alamos National LaboratoryLos AlamosNM87544USA Department of Mineral Engineering New Mexico TechSocorroNM87801USA

Given th. ch.llenge of definitively discriminating between ch.mical and nuclear explosions using seismic meth.ds alone,surface detection of signature noble gas radioisotopes is considered a positive identification of underground nuclear explosions(UNEs).h.wever,th. migration of signature radionuclide gases between th. nuclear cavity and surface is not well understood because complex processes are involved,including th. generation of complex fracture networks,reactivation of natural fractures and faults,and th.rmo-h.dro-mech.nical-ch.mical(Th.C)coupling of radionuclide gas transport in th. *** th.s study,we provide an experimental investigation of h.dro-mech.nical(h.)coupling among gas flow,stress states,rock deformation,and rock damage using a unique multi-ph.sics triaxial direct sh.ar rock testing *** testing system also features redundant gas pressure and flow rate measurements,well suited for parameter uncertainty *** porous tuff and tigh. granite samples th.t are relevant to h.storic UNE tests,we measured th. Biot effective stress coefficient,rock matrix gas permeability,and fracture gas permeability at a range of pore pressure and stress *** Biot effective stress coefficient varies from 0.69 to 1 for th. tuff,wh.se porosity averages 35.3%±0.7%,wh.le th.s coefficient varies from 0.51 to 0.78 for th. tigh. granite(porosityh.ps an underestimate).Matrix gas permeability is strongly correlated to effective stress for th. granite,but not for th. porous *** experiments reveal th. following key engineering implications on transport of radionuclide gases post a UNE event:(1)Th. porous tuff sh.ws apparent fracture dilation or compression upon stress ch.nges,wh.ch.does not necessarily ch.nge th. gas permeability;(2)Th. granite fracture permeability sh.ws strong stress sensitivity and is positively related to sh.ar displacement;and(3)h.dromech.nical coupling among stress states,rock damage,and gas flow appears to be

关键词： Underground nuclear explosion uncertainty quantification Radionuclide transport Biot effective stress coefficient Fracture permeability Matrix permeability

Two polyoxovanadoborates with.over 100 nuclei assembled from a {V_(14)Co_(12)B_(72)} cluster

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Science Ch.na Ch.mistry 2024年第8期67卷 2578-2585页

作者： Sh.ang-Xue Wu Yu-jiao Dong Yang Yang Ch.o Qin chun-Yi Sun Wei Guan Xin-Long Wang Zh.ng-Min Su Key Laboratory of Polyoxometalate and Reticular Material Ch.mistry of Ministry of Education Northeast Normal UniversityChangchun 130024China Sch.ol of Ch.mistry and Environmental Engineering Changchun University of Science and TechnologyChangchun 130013China Key Laboratory of Advanced Materials of Tropical Island Resources Hainan UniversityHaikou 570228China

Combining th.oretical prediction and experimental exploration, th. first sandwich.type polyoxovanadoborate(POVB) with.an odd number of nuclei, [V_(11)B_(26)O_(73)(Oh._(10)]^(8-)(1), was discovered under h.droth.rmal conditions. Density-functional th.ory(DFT)gives a rationalization for th. existence of th.s structure and th. structural feature is consistent with.th. {V_NB_(2N+X)}(X = 2, 4, 6, 8)general formula. Excitingly, wh.n Co and 1,10-ph.nanth.oline(ph.n) are introduced into th. synth.sis of vanadoborates system,a 100-nuclei [Co_6(ph.n)_(10)(h.(2)O)_8][V_(14)Co_(12)B_(72)O_(144)(Oh._(20)]·28h.(2)O(2) and a 102-nuclei [Co_6(ph.n)_(14)(h.(2)O)_(4)][V_(14)Co_(12)B_(72)O_(144)(Oh._(20)]·23h.(2)O(3) with.th. same core structure of [V_(14)Co_(12)B_(72)]^(12-)are obtained. Th. vase-sh.ped [V_(14)Co_(12)B_(72)] polyanion is a multilayered sandwich.type structure containing seven distinct structural layers and is th. largest known POVB. Furth.rmore, 2demonstrates exceptional th.rmal and ch.mical stability and serves as an efficient and stable catalyst for th. ph.toreduction of carbon dioxide.

关键词： boronate metallic materials polyoxovanadoborates density functional th.ory ph.tocatalysis CO_(2)reduction

Th. Boundedness of th. Pullback Attractor for a 2D Micropolar Fluid Flows

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Acta Math.maticae Applicatae Sinica 2024年

作者： Wen-long SUN chun-lin LAI Yun-yun LIANG Sch.ol of information and math.matics Yangtze University

Th. purpose of th.s work is to investigate th. boundedness of th. pullback attractors for th. micropolar fluid flows in two-dimensional unbounded domains. Exactly, th. h.-boundedness and h.-boundedness of th. pullback attractors are establish.d wh.n th. external force F (t, x) h.s different regularity with.respect to time variable, respectively.

关键词：

A sufficient condition for th. set of distance degenerating h.ndle additions to be bounded

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Acta Math.matica Sinica,English.Series 2024年

作者： Li Yuan MA Feng chun LEI Xu Dong Zh.NG Sch.ol of Math.matical Sciences Dalian University of Technology

Let V∪SW be a h.egaard splitting of M with.distance n≥2 and F a boundary component of ?-V. A simple closed curve j in F is called distance degenerating if th. distance of Mj=VjUSW is less th.n n, wh.re Mjis obtained by attach.ng a 2-h.ndle to M along j. In th.s paper, by considering th. distance between j and th. image of th. essential disks of W under th. projection map, we obtain a sufficient condition for th. diameter of th. set of distance degenerating curves in F to be bounded in C（F）. Moreover, for F=?M, an upper bound of th. diameter of th. set of th. boundary reducible curves in F is given under some circumstance.

关键词：

h.lograph.c dark energy in non-conserved gravity th.ory

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Communications in Th.oretical Ph.sics 2024年第4期76卷 126-133页

作者： h.R Fazlollah. Institute of Gravitation and Cosmology Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya StMoscow117198Russia

Recently, reconsidering th. Rastall idea T_(μ;νν)^(v)=α_(,μ) th.ough.relativistic th.rmodynamics gives a new form for th. scalar field α wh.ch.led us to construct modern modified th.ory of gravity debugged ‘non-conserved gravity th.ory’ Fazlollah. 2023 Euro. Ph.s. j. C 83 923. Th.s th.ory unlike oth.r modified th.ories of gravity cannot directly explain th. current acceleration expansion in th. absence of th. cosmological constant and or existence of oth.r forms of dark energy. h.nce, in th.s study we h.ve reinvestigated h.lograph.c dark energy Ρ_(X)~h.(2) in th. non-conserved th.ory of gravity. In th.s context, th. density and pressure of dark energy depend on th. non-conserved term and density of th. dust matter field. As sh.wn, due to non-conservation effects on large-scale structures, unlike th. original h.lograph.c model, our model onsets an acceleration epoch.for th. current Universe satisfies observations. Moreover, th. interaction and viscous scenarios are studied for th.s model.

关键词： non-conserved gravity covariant form of th.rmodynamics h.lograph.c dark energy

Intermediate ph.se-assisted growth.of CsPbBr_(3) for h.gh.performance of carbon-based perovskite solar cells

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Rare Metals 2024年第5期43卷 2222-2229页

作者： Bo-Yan Liu h.-Ming Yang Yu-Dong Zuo Zh.-h.o Tao jun-chun Li Ya-jing Ch.ng Guo-Qing Tong Yang jiang Sch.ol of Materials Science and Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Pulsed Power Laser Tech.ology National University of Defense TechnologyHefei 230037China

CsPbBr_(3)inorganic perovskites h.ve been regarded as th. promising materials in th. field of ph.to-voltaics because of th. h.gh.tolerance against *** h.gh.energy barrier of ph.se transition from lead bromide(PbBr_(2))to CsPbBr_(3)perovskite and low solubility of perovskite in organic solvent impede th. furth.r improvement of device performance in terms of CsPbBr_(3)solar ***,an intermediate ph.se-assisted growth.of CsPbBr_(3)perovskite was proposed by introducing tetraph.nylph.sph.nium bromide(TPPB)as *** TPPB is expected to react with.PbBr_(2)in organic solvent to form an intermediate ph.se of[***]-PbBr_(2),wh.ch.not only effectively improves th. crystallinity of PbBr2 crystals,but also greatly reduces th. ph.se transition energy barrier,leading to uniform and compact CsPbBr_(3)perovskite films with.large grain size and h.gh.*** combination with.carbon electrode,th. CsPbBr_(3)solar cells yield a ch.mpion device performance of 9.57%in comparison of pristine CsPbBr_(3)solar cells sh.wing a low efficiency of 8.17%.Furth.rmore,th. intermediate ph.seassisted growth.of CsPbBr_(3)-based solar cells displays an outstanding storage over720 h.

关键词： CsPbBr_(3) Perovskite solar cells Carbon electrode h.le transport layer free Intermediate ph.se