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Green ionic metal-organic frameworks as nanocatalysts for CO_(2)fixation

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Nano Research 2025年第1期18卷 260-269页

作者： Nuria Martín Miguel Maireles-Porcar Julián sánchez Velandia Belén Altava Francisco G.Cirujano Eduardo García-Verdugo Departamento de Química Inorgánica y Orgánica Universidad Jaume IAv.Sos Baynats/nCastellóde la PlanaCastellón 12071Spain

Co,Ni,and Zn iso-reticular coordination polymers of 2,5-dihydroxyterphthalic acid(H_(2)dot)can be rapidly obtained under room temperature and aqueous conditions using either sodium or ammonium hydroxide as the bases to deprotonate the *** use of metal bromides and tetrabutylammonium hydroxide(TBAOH)as the base allows the green synthesis of ionic metal-organic frameworks(MOFs),characterized by X-ray diffraction(XRD),Fourier transform infrared(FTIR),scanning electron microscopy(sEM),thermo gravimetric analysis(TGA),H-nuclear magnetic resonance(NMR),elemental analysis,and X-ray photoelectron spectroscopy(XPs),and employed in the pressure,solvent,and additive-free CO_(2)fixation to epoxides by its cycloaddition to epichlorohydrin,exhibiting a cooperative behavior between the MOF and the ionic liquid formed within the framework,achieving TONs of the confined tetrabutylammonium bromide(TBABr)up to 700.

关键词： metal-organic frameworks(MOFs) ionic liquids heterogeneous catalysis CO_(2)conversion

Berry‘’s Phase in Noncommutative spaces

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Chinese Physics Letters 2003年第5期20卷 605-607页

作者： s.A.Alavi HighEnergyPhysicsDivision DepartmentofPhysicsUniversityofHelsinkiFinlandHelsinkiInstituteofPhysicsFIN-00014HelsinkiFinland

We discuss the perturbative aspects of noncommutative quantum mechanics. Then we study Berry's phase within the framework of noncommutative quantum mechanics. The results show deviations from the usual quantum mechani... 详细信息

关键词：贝里相位量子力学非交换空间扰动

What′s new with the XYZ mesons?

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Chinese Physics C 2008年第6期32卷 455-462页

作者： s.L.Olsen Institute of High Energy Physics Chinese Academy of Sciences

I review some of the recent experimental results on the so-called XYZ mesons.

关键词： charmonium multiquark mesons quark-gluon hybrids

Merging bound states in the continuum in an open acoustic resonator

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science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun Huang Bin Jia Artem s.Pilipchuk sibo Huang Chen shen Almas F.sadreev Yong Li Andrey E.Miroshnichenko school of Physics and Electronic sciences East China Normal University Institute of Acoustics Tongji University L.V.Kirensky Institute of Physics Department of Mechanical Engineering Rowan University school of Engineering and Technology University of New South Wales at Canberra

Bound states in the continuum （BICs） are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and Friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional to ΔL-4,whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective nonHermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of Fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

Propagation of P-and s-waves in initially stressed gravitating half space

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Applied Mathematics and Mechanics(English Edition) 2013年第7期34卷 847-860页

作者： s. GUPTA s. K. VIsHWAKARMA Department of Applied Mathematics Indian School of Mines

The present paper contributes in studying the phase velocities of P- and s-waves in a half space subjected to a compressive initial stress and gravity field. The density and acceleration due to gravity vary quadratically along the depth. The dispersion equation is derived in a closed form. It is shown that the phase velocities depend not only on the initial stress, gravity, and direction of propagation but also on the inhomogeneity parameter associated with the density and acceleration due to gravity. Various particular cases are obtained, and the results match with the classical results. Numerical investigations on the phase velocities of P- and s-waves against the wave number are made for various sets of values of the material parameters, and the results are illustrated graphically. The graphical user interface model is developed to generalize the effect.

关键词： P-wave s-wave initial stress gravity half space graphical user interface

Multi-Headed Deep Learning Models to Detect Abnormality of Alzheimer’s Patients

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Computer systems science & Engineering 2023年第1期44卷 367-390页

作者： s.Meenakshi Ammal P.s.Manoharan Department of Electrical and Electronics Engineering Thiagarajar College of EngineeringMadurai625015Tamil NaduIndia

Worldwide,many elders are suffering from Alzheimer’s disease(AD).The elders with AD exhibit various abnormalities in their activities,such as sleep disturbances,wandering aimlessly,forgetting activities,etc.,which are the strong signs and symptoms of AD *** these symptoms in advance could assist to a quicker diagnosis and treatment and to prevent the progression of Disease to the next *** proposed method aims to detect the behavioral abnormalities found in Daily activities of AD patients(ADP)using *** the proposed work,a publicly available dataset collected using wearables is ***,no real-world data is available to illustrate the daily activities of ***,the proposed method has synthesized the wearables data according to the abnormal activities of *** the proposed work,multi-headed(MH)architectures such as MH Convolutional Neural Network-Long short-Term Mem-ory Network(CNN-LsTM),MH one-dimensional Convolutional Neural Network(1D-CNN)and MH two dimensional Convolutional Neural Network(2D-CNN)as well as conventional methods,namely CNN-LsTM,1D-CNN,2D-CNN have been implemented to model activity pattern.A multi-label prediction technique is applied to detect abnormal *** results obtained show that the proposed MH architectures achieve improved performance than the conventional ***,the MH models for activity recognition perform better than the abnormality detection.

关键词： Alzheimer’s disease abnormal activity detection classifier chain multi-headed CNN-LsTM wearable sensor

INEQUALITY OF KORN's TYPE ON COMPACT sURFACEs WITHOUT BOUNDARY

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Chinese Annals of Mathematics,series B 2003年第2期24卷 191-204页

作者： s.MARDARE Laboratoire Jacques-Louis Lions Universite Pierre et Marie Curie4 Place Jussieu75005 ParisFrance.

Inequalities of Korn's type on a surface with boundary have been proved in many papersusing different techniques (see e.g. [4, 5, 11]). The author proves here an inequality of Korn'stype on a compact surface without boundary. The idea is to use a finite number of maps fordefining the surface and the inequality of Korn's type without boundary conditions for everymap and to recast these in a general functional analysis setting about quotient spaces.

关键词： Inequality of Korn's type Compact surface sobolev space

Elevated basal intestinal mucosal cytokine levels in asymptomatic first-degree relatives of patients with Crohn's disease

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World Journal of Gastroenterology 2000年第1期6卷 49-52页

作者： Indaram AVK Nandi s Weissman s Lam s Bailey B Blumstein M Greenberg R Bank s Division of Gastroenterology Long Island Jewish Medical CenterAlbert Einstein College of MedicineNew YorkUSA

AIM To determine levels of cytokines incolonic mucosa of asymptomatic first degreerelatives of Crohn’s disease *** Cytokines(Interleukin(IL)1-Beta,IL-2,IL-5 and IL-8)were measured using ELIsAin biopsy samples of normal looking colonicmucosa of first degree relatives of Crohn’sdisease patients(n = 9)and from normalcontrols(n = 10)with no family history ofCrohn’s *** Asymptomatic first degree relativesof patients with Crohn’s disease had significantlyhigher levels of basal intestinal mucosalcytokines(IL-2,IL-5 and IL-8)than *** these increased cytokinelevels serve as phenotypic markers for a geneticpredisposition to developing Crohns diseaselater on,or whether they indicate early(pre-clinical)damage has yet to be further *** Asymptomatic first degreerelatives of Crohn’s disease patients have higherlevels of cytokines in their normal-lookingintestinal mucosa compared to normal controls,This supports the hypothesis that increasedcytokines may be a cause or an early event inthe inflammatory cascade of Crohns disease andare not merely a result of the inflammatoryprocess.

关键词： subject headings crohns disease cytokine/analysis intestinal mucosa

Detection and clearance in Alzheimer’s disease: leading with illusive chemical, structural and morphological features of the targets

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Neural Regeneration Research 2024年第3期19卷 497-498页

作者： Luís Gales i3s−Instituto de Investigação e Inovação em saúde Rua Alfredo AllenPortoPortugal(Gales L)IBMC−Instituto de Biologia Molecular e CelularUniversidade do PortoRua Alfredo AllenPortoPortugal ICBAs−Instituto de Ciências Biomédicas Abel salazar Rua de Jorge Viterbo FerreiraPortoPortugal

Highly specific interactions between biomolecules,such as antigen-antibody,protein-ligand,or nucleic acid base pair complementary are on the basis of the organization of complex *** same principles may be tentatively used in molecular medicine for diagnosis and therapeutics.A molecule can be designed to selectively bind a protease and thereby inhibit the production of a peptide that forms toxic aggregates in the brain or an antibody may be produced to bind specifically to that peptide for detection or clearance ***,interference in biological systems is not that *** a start there is the inhibition of the physiological role of the protease;moreover,several cleavage fragments may be produced,which may continue to diverge due to putative post-translational modification and self-assembly processes,hiding the toxic target in a“soup”of peptide species varying in size,structure and chemical composition.A perspective of the current status and challenges in targeting peptide species for diagnosis and treatment in the context of Alzheimer’s disease is given.

关键词： Alzheimer diagnosis thereby