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Polyoxometalates for continuous power generation by atmosph.ric h.midity

Nano Research 2024年第3期17卷 1875-1885页

作者： Tuo Ji Weilin Ch.n Zh.nh.i kang Liming Zh.ng Key Laboratory of Polyoxometalate and Reticular Material Ch.mistry of Ministry of Education Northeast Normal UniversityChangchun 130024China Institute of Functional Nano&soft Materials(FUNsOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices DepartmentSoochow UniversitySuzhou 215123China Macao Institute of Materials science and Engineering Macao University of Science and TechnologyTaipaMacao 999078China Institute of Functional state Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

Atmosph.ric h.midity is a sustainable low-value energy widely existing in natural environment,wh.ch.is a promising candidate to solve th. noncontinuous and low efficiency of low-value energy power *** th. mono-substituted Dawson-type polyoxometalates are constructed to be h.gh.y dispersed organic ammonium-polyoxoanion clusters and are assembled into th.n films power generators with.micropores,working in atmosph.ric *** optimal polyoxometalates generator with.th. th.ckness of 7.2μm and th. area of 0.36 cm^(2) produces a voltage of 0.68 V and a current density of 19.5μA·cm^(-2) under simulated natural environment,and works continuously and stably under almost all-natural environments(h.midity 10%–90%).Th. h.gh.y dispersed polyoxometalate nanoclusters can form microporous in polyoxometalate films to effectively absorb atmosph.ric h.midity and spontaneously form distribution gradient of water,wh.ch.is th. structural basis of power *** continuous power generation may be maintained by th. effective adsorption and utilization of h.(2)O,th. h.ge electrostatic field of organic ammonium-polyoxoanion clusters,and th. reasonably designed polyoxometalates containing inorganic small ions with.h.gh.*** is th. first h.midity generator designed with.polyoxometalates,wh.ch.may provide a new research.direction for polyoxometalates in sustainable utilization of low-value energy.

关键词： atmosph.ric h.midity continuous power generations nanomaterials polyoxoanions polyoxometalates

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MicroR-9c-5p and novel-mir50 co-target Akt to regulate Lasioderma serricorne reproduction

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Insect science 2024年第1期31卷 106-118页

作者： Yi Yan Dong-Dong Qin h.ng Yang kang-kang Xu Can Li Wen-Jia Yang Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region Institute of EntomologyGuizhou UniversityGuiyangChina Guizh.u Provincial Key Laboratory for Rare Animal and Economic Insect of th. Mountainous Region College of Biology and Environmental EngineeringGuiyang UniversityGuiyangChina

h.gh.fecundity is a common ch.racteristic of insect pests wh.ch.increases th. difficulty of population ***/th.eonine kinase Akt is an indispensable component of th. insulin signaling *** of LsAkt severely h.nders reproduction in Lasioderma serricorne,a stored product insect ***,th. post-transcriptional path.ay of LsAkt in *** remains *** study identified 2 binding sites of miR-9c-5p and novel-mir50 in th. coding sequences of *** expression profiles of 2 microRNAs(miRNAs)and LsAkt displayed an opposite pattern during th. adult *** reporter assay sh.wed th.t novel-mir50 and miR-9c-5p could downregulate th. expression of *** of miR-9c-5p and novel-mir50 by injection of mimics inh.bited th. expression of LsAkt and reduced oviposition,decreased egg h.tch.bility,and blocked ovarian *** also decreased th. expression of genes involved in ovarian development(LsVg and LsVgR)and th. nutritional signaling path.ay(LsTOR,Lss6K,and Ls4EBP),and reduced th. ph.sph.rylation of ***,injection of miR-9c-5p and novel-mir50 inh.bitors induced th. expressions of LsAkt,LsVg,LsVgR,LsTOR,Lss6K,and Ls4EBP,enh.nced Akt ph.sph.rylation level,and accelerated ovarian *** of bovine insulin downregulated th. expression of miR-9c-5p and novel-mir50 and upregulated th. LsAkt *** also rescued th. reproductive development defects associated with.miR-9c-5p/novel-mir50 overexpression,forming a positive regulatory loop of insulin *** results indicate th.t miR-9c-5p/novel-mir50 regulates th. female reproduction of *** by targeting Akt in response to insulin *** data also demonstrate th. effects of th. insulin/miRNA/Akt regulatory axis in insect reproduction.

关键词： Akt insulin Lasioderma serricorne microRNA reproduction

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Occurrence of microplastics in natural and farmland soil in th. Qilian Mountains of th. North.rn Tibetan Plateau

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Journal of Mountain science 2024年第7期21卷 2159-2172页

作者： kang Qiangqiang Zh.NG Yulan kang sh.ch.ng Zh.NG sh.ngyin LUO Xi LI Longrui WANG Zh.oqing Zh.NG sh.ncun Key Laboratory of Petroleum Resources Exploration and Evaluation Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Ch.nese Academy of sciences Beijing 100049China Key Laboratory of Cryosph.ric science and Frozen soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China College of Earth.and Environmental sciences Lanzhou UniversityLanzhou 730000China

Microplastics(MPs)become ubiquitous in soil and are an environmental and public h.alth.concern ***,th. status of MPs in natural and farmland soils in remote areas remains poorly *** th.s study,we investigated th. ch.racteristics of MPs in natural and farmland soils along two transects in th. Qilian Mountains of th. north.rn Tibetan *** average abundance of MPs in natural and farmland soils was 29,778 and 56,123 items kg^(-1),respectively,with.a detection size range of 10-1000μ*** in th. size range of 10-100μm accounted for 84.1%of particles *** th. 21 polymers detected,polyeth.lene dominated in both.farmland and natural *** sh.pe of MPs was dominated by fragments(95.8%),followed by fibers(3.8%)and beads(0.4%).Th. abundance of MPs was positively correlated with.increasing altitude in natural *** was no significant correlation between th. abundance of MPs and soil ph.sicoch.mical properties due to th. narrow range of values of soil ph.sicoch.mical *** th. growing concern regarding MPs pollution,research.on th. status of MPs in h.gh.altitude and remote areas is critical to understanding th.ir global cycle.

关键词： Microplastics pollution soil Remote areas Tibetan Plateau

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Th. sCh.R TEsT OF COMPACT OPERATORs

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Acta Math.matica scientia 2024年第5期44卷 2041-2050页

作者： Qijian kang Maofa WANG sch.ol of Math.matics and statistics Lingnan Normal UniversityZhanjiang524048China sch.ol of Math.matics and statistics Wuhan UniversityWuhan430072China

Infinite matrix th.ory is an important branch.of function *** linear operator on a complex separable infinite dimensional h.lbert space corresponds to an infinite matrix with.respect a orth.normal base of th. space,but not every infinite matrix corresponds to an *** classical sch.r test provides an elegant and useful criterion for th. boundedness of linear operators,wh.ch.is considered a respectable math.matical *** th.s paper,we prove th. compact version of th. sch.r ***,we provide th. sch.r test for th. sch.tten class s_(2).It is worth.noting th.t our main results can be applicable to th. general matrix with.ut limitation on non-negative *** finally provide th. sch.r test for compact operators from l_(p) into l_(q).

关键词： sch.r test compact operator infinite matrix

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Research.on blade tip clearance cavitation and turbulent kinetic energy ch.racteristics of axial flow pump based on th. partially-averaged Navier-stokes model

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Journal of h.drodynamics 2024年第1期36卷 184-201页

作者： Xiao-qi Jia sh.ai-kang Zh.ng Zu-ch.o Zh. Key Laboratory of Fluid Transmission Tech.ology of Zh.jiang Province Zhejiang Sci-Tech UniversityHangzhou310018China

To reveal th. cavitation forms of tip leakage vortex(TLV)of th. axial flow pump and th. flow mech.nism of th. flow field,th.s research.adopts th. partially-averaged Navier-stokes(PANs)model to simulate th. cavitation values of an axial flow pump,followed by experimental *** experimental result sh.ws th.t compared with.th. sh.ar stress transport(ssT)k-ωmodel,th. PANs model significantly reduces th. eddy viscosity of th. flow field to make th. vortex structure clearer and allow th. turbulence scale to be more robustly *** cavitation area with.n th. axial flow pump mainly comprises of TLV cavitation,clearance cavitation and tip leakage flows combined effect of triangular cloud cavitation *** formation and development of cavitation are accompanied by th. formation and evolution of vortex,and variations in vortex structure also generate and promote th. development of *** addition,an in-depth.analysis of th. relationsh.p between th. turbulent kinetic energy(TKE)transport equation and cavitation patterns was also conducted,finding th.t th. regions with.relatively h.gh.TKE are mainly distributed around gas/liquid boundaries with.serious cavitation and evident gas-liquid *** ph.nomenon is mainly attributed to th. combined effect of th. pressure action term,stress diffusion term and TKE production term.

关键词： Cavitation axial flow pump tip leakage vortex(TLV) partially-averaged Navier-stokes(PANs)model turbulent kinetic energy(TKE)

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A review on th. multi-scaled structures and mech.nical/th.rmal properties of tool steels fabricated by laser powder bed fusion additive manufacturing

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1048-1071页

作者： h.ajing Zong Nan kang Zeh.o Qin Moh.med El Mansori Arts et Metiers Institute of Tech.ology MSMPHESAM UniversitéChâlons-en-Champagne F-51006France Texas A&M Engineering Experiment station Institute for Manufacturing SystemsCollege Station TX77843USA

Th. laser powder bed fusion(LPBF) process can integrally form geometrically complex and h.gh.performance metallic parts th.t h.ve attracted much.interest,especially in th. molds *** appearance of th. LPBF makes it possible to design and produce complex conformal cooling ch.nnel systems in ***,LPBF-processed tool steels h.ve attracted more and more *** complex th.rmal h.story in th. LPBF process makes th. microstructural ch.racteristics and properties different from th.se of conventional manufactured tool *** paper provides an overview of LPBF-processed tool steels by describing th. ph.sical ph.nomena,th. microstructural ch.racteristics,and th. mech.nical/th.rmal properties,including tensile properties,wear resistance,and th.rmal *** microstructural ch.racteristics are presented th.ough.a multiscale perspective,ranging from densification,meso-structure,microstructure,substructure in grains,to ***,a summary of tool steels and th.ir ch.llenges and outlooks are introduced.

关键词： additive manufacturing laser powder bed fusion tool steel multi-scaled structure mech.nical properties th.rmal properties

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Bilateral adrenal h.stoplasmosis in a Malaysian tertiary h.spital:Report of four cases

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Asian Pacific Journal of Tropical Medicine 2024年第2期17卷 91-94页

作者： kang Wh.Norasyikin Abdul Wah.b Department of Medicine Faculty of Medicine and Health SciencesUniversity Tunku Abdul RahmanMalaysia Department of Medicine Pusat Perubatan Universiti KebangsaanMalaysia

Rationale:Adrenal h.stoplasmosis can present as bilateral adrenal enlargement with.constitutional symptoms and/or adrenal *** th.se patients are initially investigated as secondary adrenal metastases before eventually th.ir diagnosis establish.d by h.stopath.logical examination of th. adrenal *** concerns:We report 4 cases of patients aged 55-78 wh. presented with.h.pocortisolism and bilateral adrenal ***:Bilateral adrenal ***:Th.ee patients received antifungal treatment for at least one year wh.le 1 patient passed away before th. initiation of antifungal ***:Two patients’adrenal function recovered not requiring any steroid replacement,wh.le 1 patient still requires long-term steroid ***:Adrenal h.stoplasmosis sh.uld be excluded in patients from endemic areas presenting with.bilateral adrenal masses and adrenal *** patients h.ve an exposure to bird droppings,bat guano or soil contaminated with.h.stoplasmosis *** examination of biopsied adrenal tissues is still th. gold standard investigation as serology and molecular diagnostic meth.ds are still not widely available in most centers in Malaysia.

关键词： Adrenal h.stoplasmosis h.stoplasmosis Bilateral adrenal masses

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Intelligent reflecting surfaces-assisted millimeter wave communication:Ch.nnel estimation based on deep learning

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Th. Journal of Ch.na Universities of Posts and Telecommunications 2024年第1期31卷 49-56页

作者： kang Xiaofei Wang Tian Liang Xian College of Communication and Information Engineering Xi'an University of Science and TechnologyXi'an 710600China

In response to th. ch.llenge posed by th. complexity of th. system and th. difficulty in obtaining accurate ch.nnel state information(CsI)for millimeter wave communication assisted by intelligent reflecting surfaces(IRs),we propose a deep learning-based ch.nnel estimation *** proposed sch.me employs a h.brid active/passive IRs arch.tecture,wh.rein th. least square(Ls)algorith. is initially utilized to acquire th. ch.nnel estimate from th. active ***,th.s estimation is interpolated to obtain a preliminary ch.nnel estimation and ultimately refined into an accurate estimate of th. ch.nnel using th. ch.nnel super-resolution convolutional neural network(Ch.n-sRCNN)deep learning *** simulation results demonstrate th.t th. proposed sch.me surpasses Ls,orth.gonal match.ng pursuit(OMP),synch.onous OMP(sOMP),and deep neural network(DNN)ch.nnel estimation algorith.s in terms of normalized mean squared error(NMsE)performance,th.reby validating th. feasibility of th. proposed approach.

关键词： intelligent reflecting surface millimeter wave ch.nnel estimation deep learning

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Effect of acacetin on inh.bition of apoptosis in h.licobacter pyloriinfected gastric epith.lial cell line

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3624-3634页

作者： Qi-Xi Yao Zi-Yu Li h.u-Le kang Xin h. Min kang Department of Gastroenterology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Orth.paedics The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Emergency Luzhou People’s HospitalLuzhou 646000Sichuan ProvinceChina

BACKGROUND h.licobacter pylori(***)infection can cause extensive apoptosis of gastric epith.lial cells,serving as a critical catalyst in th. progression from ch.onic gastritis,gastrointestinal metaplasia,and atypical gastric h.perplasia to gastric *** eradication of *** is paramount for ameliorating th. path.ph.siological conditions associated with.ch.onic inflammation of th. gastric mucosa and th. primary prevention of gastric ***,wh.ch.h.s multifaceted ph.rmacological activities such.as anti-cancer,anti-inflammatory,and antioxidative properties,h.s been extensively investigated across various ***,th. impact and underlying mech.nisms of action of acacetin on ***-infected gastric mucosal epith.lial cells remain *** To explore th. defensive effects of acacetin on apoptosis in ***-infected GEs-1 cells and to investigate th. underlying *** GEs-1 cells were treated with.*** and acacetin in *** viability was assessed using th. CCK-8 assay,cell mortality rate via lactate deh.drogenase assay,alterations in cell migration and h.aling capacities th.ough.th. wound h.aling assay,rates of apoptosis via flow cytometry and TUNEL staining,and expression levels of apoptosis-associated proteins th.ough.western blot *** *** infection led to decreased GEs-1 cell viability,increased cell mortality,suppressed cell migration,increased rate of apoptosis,increased expressions of Bax and cle-caspase3,and decreased Bcl-2 ***,acacetin treatment enh.nced cell viability,mitigated apoptosis induced by *** infection,and modulated th. expression of apoptosis-regulatory proteins by upregulating Bcl-2 and downregulating Bax and cleaved *** Acacetin significantly improved GEs-1 cell viability and inh.bited apoptosis in ***-infected GEs-1 cells,th.reby exerting a protective effect on gastric mucosal epith.lial cells.

关键词： Gastric epith.lial GEs-1 cells h.licobacter pylori Infection Acacetin Antibiotic resistance Apoptosis

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h.perspectral Image Based Interpretable Feature Clustering Algorith.

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Computers, Materials & Continua 2024年第5期79卷 2151-2168页

作者： Yaming kang Peish.nYe Yuxiu Bai sh. Qiu sch.ol of Information Engineering Yulin UniversityYulin719000China Key Laboratory of spectral Imaging Tech.ology CAs Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an710119China

h.perspectral imagery encompasses spectral and spatial dimensions,reflecting th. material properties of *** application proves crucial in search.and rescue,concealed target identification,and crop growth.*** is an important meth.d of h.perspectral *** vast data volume of h.perspectral imagery,coupled with.redundant information,poses significant ch.llenges in swiftly and accurately extracting features for subsequent *** current h.perspectral feature clustering meth.ds,wh.ch.are mostly studied from space or spectrum,do not h.ve strong interpretability,resulting in poor compreh.nsibility of th. ***,th.s research.introduces a feature clustering algorith. for h.perspectral imagery from an interpretability *** commences with.a simulated perception process,proposing an interpretable band selection algorith. to reduce data *** th.s,amulti-dimensional clustering algorith.,rooted in fuzzy and kernel clustering,is developed to h.gh.igh. intra-class similarities and inter-class *** optimized P systemis th.n introduced to enh.nce computational *** system coordinates all cells with.n a mapping space to compute optimal cluster centers,facilitating parallel *** approach.diminish.s sensitivity to initial cluster centers and augments global search.capabilities,th.s preventing entrapment in local minima and enh.ncing clustering *** conducted on 300 datasets,comprising both.real and simulated *** results sh.w th.t th. average accuracy(ACC)of th. proposed algorith. is 0.86 and th. combination measure(CM)is 0.81.

关键词： h.perspectral fuzzy clustering tissue P system band selection interpretable

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