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Construction of conjugated scaffolds driven by mechanochemistry towards energy storage applications

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Green Chemical Engineering 2024年第2期5卷 155-172页

作者： Juntian Fan Zhenzhen yang sheng Dai Department of Chemistry Institute for Advanced Materials and ManufacturingUniversity of TennesseeKnoxvilleTN37996USA Chemical s.iences Division Oak Ridge National LaboratoryOak RidgeTN37831USA

Mechanochemistry has been recognized as an efficient and sustainable methodology to provide a unique driven force and reaction environments under ambient and neat conditions for the construction of functionalized materials posses.ing promising *** them,highly porous conjugated scaffolds with attractive electronic conductivities and high surface areas are one of the representative categories exhibiting diverse taskspecific applications,especially in electrochemical energy *** recent years,the mechanochemistry-driven procedures have been deployed to construct conjugated scaffolds with engineered structures and properties leveraging the tunability in chemical structures of building blocks and polymerization capability of diverse ***,a thorough review of related works.is required to gain an in-depth understanding of the mechanochemical synthesis procedure and property-performance relations.ip of the as-produced conjugated ***,the mechanochemistry-driven construction of conjugated porous networks(CPNs),the carbon-based materials(e.g.,graphite and graphyne),and carbon supported single atom catalysts(Cs-sACs)are discussed and *** electrochemical performance of the afforded conductive scaffolds as electrode materials.in supercapacitors and alkali-ion batteries.is ***,the challenges and potential opportunities related to the construction of conjugated scaffolds driven by mechanochemistry are also discussed and concluded.

关键词： Mechanochemistry Conjugated scaffolds Porous organic networks Alkali-ion battery supercapacitor

On Leray's problem in an infinitely long pipe with the Navier-s.ip boundary condition

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s.ience China Mathematics 2024年第4期67卷 819-854页

作者： Zijin Li Xinghong Pan Jiaqi yang school of Mathematics and statis.ics Nanjing University of Information Science and TechnologyNanjing 210044China school of Mathematics and key Laboratory of Ministry of industry and information Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China school of Mathematics and statis.ics Northwestern Polytechnical UniversityXi'an 710129China

The original Leray’s problem concerns the well-posedness of weak solutions to the steady incompres.ible Navier-stokes equations.in a distorted pipe,which approach the Poiseuille flow subject to the no-s.ip boundary condition at spatial *** this paper,the same problem with the Navier-s.ip boundary condition instead of the no-s.ip boundary condition,is *** to the complexity of the boundary condition,some new ideas,presented as follows,are introduced to handle the extra difficulties caused by boundary ***,the Poiseuille flow in the semi-infinite straight pipe with the Navier-s.ip boundary condition will be introduced,which will serve as the asymptotic profile of the solution to the generalized Leray’s problem at spatial ***,a solenoidal vector function defined in the whole pipe,satisfying the Naviers.ip boundary condition,having the designated flux and equalling the Poiseuille flow at a large distance,will be carefully *** plays an important role in reformulating our ***,the energy es.imates depend on a combined L2-es.imate of the gradient and the stress tensor of the velocity.

关键词： stationary Navier-stokes system Navier-s.ip boundary condition Leray's problem

sharp bilinear decomposition for products of both anisotropic Hardy spaces and their dual spaces with its applications to endpoint boundedness of commutators

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s.ience China Mathematics 2024年第9期67卷 2091-2152页

作者： Jun Liu Dachun yang Mingdong Zhang school of Mathematics China University of Mining and TechnologyXuzhou 221116China Laboratory of Mathematics and Complex systems(Ministry of Education of China) School of Mathematical SciencesBeijing Normal UniversityBeijing 100875China

Let a:=(a_(1),...,a_(n))2[1,∞)^(n),p∈(0,1),andα:=1/*** any x∈R^(n)and t∈[0,∞),letΦ_(p)(x,t):={t/1+(t[x]_(a)^(ν))^(1-p)if να■N,t/1+(t[x]_(a)^(ν))^(1-p)[log(e+|x|a)]^(p)if να∈N,let where [·]a:=1+|·|a,|·|a denotes the anisotropic quasi-homogeneous norm with respect to a,and ν:=a_(1)+…+a_(n).Let H_(a)^(p)(R^(n)),L_(a)^(a)(R^(n)),and H_(a)^(Φ_(p))(R^(n))be,respectively,the anisotropic Hardy space,the anisotropic Campanato space,and the anisotropic Musielak-Orlicz Hardy space associated with Φ_(p) on R^(n).in this article,via first establis.ing the wavelet characterization of anisotropic Campanato spaces,we prove that for any f∈H_(a)^(p)(R^(n))and g∈L_(a)^(a)(R^(n)),the product of f and g can be decomposed into s(f,g)+T(f,g) in the sense of tempered distributions,where s.is a bilinear operator bounded from H_(a)^(p)(R^(n))*L_(a)^(a)(R^(Φ_(p))) to L^(1)(R^(n)) and T is a bilinear operator bounded from H_(a)^(p)(R^(n))*L_(a)^(a)(R^(n)) to H_(a)^(Φ_(p))(R^(n)) .Moreover,this bilinear decomposition is sharp in the dual sense that any y■H_(a)^(Φ_(p))(R^(n)) that fits.into the above bilinear decomposition should satisfy(L^(1)(R^(n))+y)*=(L^(1)(R^(n)+H_(a)^(Φ_(p))(R^(n))*.As applications,for any non-constant b∈L_(a)^(a)(R^(n)) and any sublinear operator T satisfying some mild bounded assumptions,we find the largest subspace of H_(a)^(p)(R^(n)),denoted by H_(a,b)^(p)(R^(n)),such that the commutator [b,T] is bounded from H_(a,b)^(p)(R^(n))to L^(1)(R^(n)).in addition,when T is an anisotropic CalderónZygmund operator,the boundedness of [b,T] from H_(a,b)^(p)(R^(n))to L^(1)(R^(n))(or to H_(a)^(1)(R^(n)) is also *** key of their proofs.is the wavelet characterization of function spaces under consideration.

关键词： anisotropic Euclidean space bilinear decomposition Hardy space Campanato space Musielak-Orlicz Hardy space commutator wavelet

New low-rank optimization model and algorithms for spectral compressed sensing

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s.ience China Mathematics 2024年第10期67卷 2409-2432页

作者： Zai yang Xunmeng Wu Zongben Xu school of Mathematics and statis.ics Xi'an Jiaotong UniversityXi'an 710049China

in this paper, we inves.igate the recovery of an undamped spectrally sparse signal and its spectral components from a set of regularly spaced samples within the framework of spectral compressed sensing and super-resolution. We show that the exis.ing Hankel-based optimization methods suffer from the fundamental limitation that the prior knowledge of undampedness cannot be exploited. We propose a new low-rank optimization model partially ins.ired by forward-backward proces.ing for line spectral es.imation and show its capability to restrict the spectral poles to the unit circle. We present convex relaxation approaches with the model and show their provable accuracy and robustness to bounded and sparse noise. All our results are generalized from one-dimensional to arbitrary-dimensional spectral compressed sensing. Numerical simulations are provided to corroborate our analysis and show the efficiency of our model and the advantageous performance of our approach in terms of accuracy and resolution compared with the state-of-the-art Hankel and atomic norm methods.

关键词： low-rank double Hankel model doubly enhanced matrix completion line spectral es.imation spectral compressed sensing kronecker's theorem

Efficacy comparison of multipoint and single point scanning panretinal laser photocoagulation in non-proliferative diabetic retinopathy treatment

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World Journal of Diabetes 2024年第8期15卷 1734-1741页

作者： yang-Zhou Zhang Hua Gong Juan yang Ji-Pu Bu Hui-Ling yang ins.itute of Molecular Precision Medicine and Hunan key Laboratory of Molecular Precision Medicine Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina Department of Ophthalmology Xingsheng HospitalYiyang 413200Hunan ProvinceChina Department of Ophthalmology Boshi Eye HospitalLiuyang 410300Hunan ProvinceChina Department of Ophthalmology Hunan Children‘s HospitalChangsha 410007Hunan ProvinceChina

BACkGROUND Non-proliferative diabetic retinopathy(NPDR)poses a significant challenge in diabetes management due to its microvascular changes.in the *** photocoagulation,a conventional therapy,aims to mitigate the risk of progres.ing to proliferative diabetic retinopathy(PDR).AiM To compare the efficacy and safety of multi-spot vs single-spot scanning panretinal laser photocoagulation in NPDR *** Forty-nine NPDR patients(86 eyes)treated between september 2020 and July 2022 were *** were randomly allocated into single-spot(n=23,40 eyes)and multi-spot(n=26,46 eyes)*** outcomes.including bestcorrected visual acuity(BCVA),central macular thickness(CMT),and mean threshold sensitivity,were assessed at predetermined intervals over 12 *** reactions were also *** Energy levels did not significantly differ between groups(P>0.05),but the multi-spot group exhibited lower energy density(Pimprovements were noted in the multi-spot group at one-month posttreatment(Pse reaction incidence was similar between groups(P>0.05).CONCLUsiON While energy intensity and safety were comparable between modalities,multi-spot scanning demonstrated lower energy density and showed superior short-term improvements.in BCVA and CMT for NPDR patients,with reduced laser-induced damage.

关键词： Panretinal laser photocoagulation Non-proliferative diabetic retinopathy Efficacy comparison Multipoint single point Treatment assessment

Different effects of 24 dietary intakes on gastroesophageal reflux disease: A mendelian randomization

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World Journal of Clinical Cases 2024年第14期12卷 2370-2381页

作者： Yu-Xin Liu Wen-Tao yang yang Li Department of Oncology Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072Sichuan ProvinceChina Department of Cardiovascular Chengdu Integrated TCM&Western Medicine HospitalChengdu 610041Sichuan ProvinceChina Department of Nuclear Medicine Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072Sichuan ProvinceChina

BACkGROUND in observational studies,dietary intakes are associated with gastroesophageal re-flux disease(GERD).AiM To conduct a two-sample mendelian randomization(MR)analysis to determine whether those associations are *** To explore the relations.ip between dietary intake and the risk of GERD,we extracted appropriate single nucleotide polymorphisms from genome-wide asso-ciation study data on 24 dietary *** methods were adopted for data analysis.inverse variance weighting,weighted median methods,and MR-Egger's *** odds ratio(OR)and 95%confidence interval(Ci)were used to eva-luate the causal association between dietary intake and *** Our univariate Mendelian randomization(UVMR)results showed significant evidence that pork intake(OR,2.83;95%Ci:1.76-4.55;P=1.84×10–5),beer intake(OR,2.70,95%Ci:2.00-3.64;P=6.54×10–11),non-oily fish intake(OR,2.41;95%Ci:1.49-3.91;P=3.59×10–4)have a protective effect on *** addition,dried fruit intake(OR,0.37;95%Ci:0.27-0.50;6.27×10–11),red wine intake(OR,0.34;95%Ci:0.25-0.47;P=1.90×10-11),cheese intake(OR,0.46;95%Ci:0.39-0.55;P=3.73×10-19),bread intake(OR,0.72;95%Ci:0.56-0.92;P=0.0009)and cereal intake(OR,0.45;95%Ci:0.36-0.57;P=2.07×10-11)were negatively associated with the risk of *** was a sugges.ive asso-ciation for genetically predicted coffee intake(OR per one sD increase,1.22,95%Ci:1.03-1.44;P=0.019).Multi-variate Mendelian randomization further confirmed that dried fruit intake,red wine intake,cheese intake,and cereal intake directly affected *** contrast,the impact of pork intake,beer intake,non-oily fish intake,and bread intake on GERD was partly driven by the common risk factors for ***,after adjus.ing for all four elements,there was no longer a sugges.ive association between coffee intake and *** This study provides MR evidence to support the causal relations.ip between a broad range of dietary intake and GERD,providing new insights for the treatment and p

关键词： Dietary Gastroesophageal reflux disease Mendelian randomization Disease management Randomized controlled trial

Hydrogen sulfide Promotes Platelet Autophagy via􀀳􀀧􀀪􀀩􀀵􀀐􀄮􀀒􀀳􀀬􀀖􀀮􀀒􀀤􀁎􀁗􀀃􀀶􀁌􀁊􀁑􀁄􀁏􀁌􀁑􀁊􀀃􀁌􀁑􀀃􀀦􀁌􀁕􀁕􀁋􀁒􀁗􀁌􀁆􀀃􀀷􀁋􀁕􀁒􀁐􀁅􀁒􀁆􀁜􀁗􀁒􀁓􀁈􀁑􀁌􀁄

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Journal of Clinical and Translational Hepatology 2024年第7期12卷 625-633页

作者： Hua-Xiang yang yang-Jie Li yang-Lan He ke-ke Jin Ling-Na Lyu Hui-Guo Ding Department of Gastroenterology and Hepatology Beijing You’an Hospital Affiliated to Capital Medical UniversityBeijingChina

Background and Aims:The role of platelet autophagy in cirrhotic thrombocytopenia(CTP)remains *** study aimed to inves.igate the impact of platelet autophagy in CTP and elucidate the regulatory mechanism of hydrogen sulfide(H_(2)s)on platelet ***:Platelets from 56 cirrhotic patients and 56 healthy individuals were isolated for in vitro *** markers(ATG7,BECN1,LC3,and sQsTM1)were quantified using enzyme-linked immunosorbent assay,while autophagosomes were visualized through electron *** blotting was used to assess the autophagy-related proteins and the PDGFR/Pi3k/Akt/mTOR pathway following treatment with NaHs(an H_(2)s donor),hydroxocobalamin(an H_(2)s scavenger),or AG 1295(a selective PDGFR-α/inhibitor).A carbon terachloride-induced cirrhotic BALB/c mouse model was *** mice with thrombocytopenia were randomly treated with normal saline,NaHs,or hydroxocobalamin for 15 *** in platelet count and aggregation rate were observed every three ***:Cirrhotic patients with thrombocytopenia exhibited significantly decreased platelet autophagy markers and endogenous H_(2)s levels,alongside increased platelet aggregation,compared to healthy *** vitro,NaHs treatment of platelets from severe CTP patients elevated LC3-ii levels,reduced sQsTM1 levels,and decreased platelet aggregation in a dose-dependent manner.H_(2)s treatment inhibited PDGFR,Pi3k,Akt,and mTOR *** vivo,NaHs significantly increased LC3-ii and decreased sQsTM1 expres.ions.in platelets of cirrhotic mice,reducing platelet aggregation without affecting the platelet ***:Diminished platelet autophagy potentially contributes to thrombocytopenia in cirrhotic patients.H_(2)s modulates platelet autophagy and functions pos.ibly via the PDGFR-α/Pi3k/Akt/mTOR signaling pathway.

关键词： Liver cirrhosis Thrombocytopenia Platelet Autophagy Hydrogen sulfide NaHs PDGFR-α Pi3k/Akt/mTOR signaling

A Rendezvous Mis.ion to the second Earth Trojan Asteroid 2020 XL_5 with Low-Thrust Multi-Gravity As.ist Techniques

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Research in Astronomy and Astrophysics 2024年第1期24卷 245-264页

作者： s.i-Hai yang Bo Xu Xin Li school of Aeronautics and Astronautics Sun Yat-sen UniversityShenzhen 518107China

As the second of Earth's Trojan asteroids, 2020 XL_(5) is worthy of rendezvous and even sample return mis.ions.in many aspects. in this paper, a rendezvous mis.ion to Earth's second Trojan asteroid 2020 XL_(5) is ***, due to its high inclination and large eccentricity, direct impulsive transfer requires large amounts of fuel consumption. To address this challenge, we explore the benefits of electric propulsion and multi-gravity as.ist techniques for interplanetary mis.ions. These two techniques are integrated in this mis.ion design. The design of a low-thrust gravity-as.ist(LTGA) trajectory in multi-body dynamics.is thoroughly inves.igated,which is a complex process. A comprehensive framework including three steps.is presented here for optimization of LTGA trajectories.in multi-body dynamics. The rendezvous mis.ion to 2020 XL_(5) is designed with this three-step approach. The most effective transfer sequence among the outcomes.involves Earth–Venus–Earth–Venus-2020 XL_(5). Numerical results.indicate that the combination of electric propulsion and multi-gravity as.ists can greatly reduce the fuel consumption, with fuel consumption of 9.03%, making it a highly favorable choice for this rendezvous mis.ion.

关键词： minor planets asteroids:general celes.ial mechanics Planetary systems

A novel and promising engineering application of carbon dots:Enhancing the chloride binding performance of cement

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Chinese Chemical Letters 2024年第6期35卷 409-416页

作者： Wu-Jian Long yang Yu Chuang He Guangdong Provincial key Laboratory of Durability for Marine Civil Engineering Key Lab of Coastal Urban Resilient InfrastructureMOECollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China

Corrosion of reinforcement induced by chloride invasion is extensively considered as the dominating deterioration mechanism of reinforced concrete(RC)structures,leading to serious safety hazards and tremendous economic ***,it s.ill lacks well dispersive and cost-efficient nanomaterials to improve the anti-chloride-corrosion ability of RC ***,specific carbon dots(CDs)with high dispersity and low cost are deliberately designed,successfully prepared by hydrothermal proces.ing,and then firstly applied to immensely enhance chloride binding performance of cement,thereby contributing to suppres.ing the corrosion of ***,the tailored CDs are composed of the carbon core with highly crystalline sp^(2)C structures and oxygen-containing groups connecting on the carbon core;The typical equilibrium test confirms that with respect to that of the blank cement paste,the chloride binding capacity of cement paste involving 0.2 wt%(by weight of cement)CDs.is.increased by 109% after 14-day exposure to 3 mol/L Na Cl solution;according to comprehensive analyses of phase compositions,the chloride binding mechanism of CDs-modified cement is rationally attributed to the fact that the incorporation of CDs advances the formation of calcium silicate hydrate(C-s-H)gels and Friedel's salt(Fs),thus enormously enhancing the physically adsorbed and chemically bound chloride ions of cement *** work not only firstly provides a novel high-dispersity and low-cost nanomaterial toward the durability enhancement of RC structures,but also broadens the application of CDs.in the field of engineering,conducing to s.imulating their industrialization development.

关键词： Carbon dots Chloride binding Cement Chloride binding mechanism Friedel’s salt