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Rational molecular design of efficient yellow-red dendrimer TADF for solution-processed OLeDs: a combined effect of substitution position and strength of the donors

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Science China Chemistry 2024年第5期67卷 1613-1623页

作者： Changfeng Si Dianming Sun Tomas matulaitis David b.Cordes Alexandra m.Z.Slawin eli Zysman-Colman Organic Semiconductor Centre EaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsKY169STUK

The development of high-performance solution-processed red organic light-emitting diodes(OLeDs) remains a challenge,particularly in terms of maintaining efficiency at high luminance. Here, we designed and synthesized four novel orange-red thermally activated delayed fluorescence(TADF) dendrimers that are solution-processable: 2GCz bP, 2DPACz bP, 2FbP2GCz and 2FbP2DPACz. we systematically investigated the effect of substitution position and strength of donors on the optoelectronic properties. The reverse intersystem crossing rate constant(kRISC) of the emitters having donors substituted at positions 11and 12 of the dibenzo[a,c]phenazine(bP) is more than 10-times faster than that of compounds substituted having donors substituted at positions 3 and 6. Compound 2DPACz bP, containing stronger donors than 2GCz bP, exhibits a red-shifted emission and smaller singlet-triplet energy splitting, Δe_(ST), of 0.01 e V. The solution-processed OLeD with 10 wt% 2DPACz bP doped in m CP emitted at 640 nm and showed a maximum external quantum efficiency(eQe_(max)) of 7.8%, which was effectively maintained out to a luminance of 1,000 cd m-2. Such a device's performance at relevant display luminance is among the highest for solution-processed red TADF OLeDs. The efficiency of the devices was improved significantly by using 4Cz IPN as an assistant dopant in a hyperfluorescence(HF) configuration, where the 2DPACz bP HF device shows an eQemaxof 20.0% at λeL of 605 nm and remains high at 11.8% at a luminance of 1,000 cd m-2, which makes this device one of the highest efficiency orange-to-red HF SP-OLeDs to date.

关键词： thermally activated delayed fluorescence solution-processing red OLeDs dibenzo[a,c]phenazine dendrimers

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Prompt neutron emission in ^(250)No spontaneous fission associated with ground and isomeric state decays

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Chinese Physics C 2024年第6期48卷 112-117页

作者： R.S.mukhin A.V.Isaev A.V.Andreev m.L.Chelnokov V.I.Chepigin H.m.Devaraja I.N.Izosimov A.A.Kuznetsova O.N.malyshev A.G.Popeko Yu.A.Popov A.Rahmatinejad b.Sailaubekov T.m.Shneidman e.A.Sokol A.I.Svirikhin m.S.Tezekbayeva m.A.bychkov A.V.Yeremin O.Dorvaux b.Gall K.Kessaci K.Hauschild A.Lopez-martens Joint Institute for Nuclear Research Dubna141980Russia Dubna State University Dubna141982Russia Institute of Nuclear Physics Almaty050032Kazakhstan L.N.Gumilyov eurasian National University Astana010008Kazakhstan Kazan Federal University Kazan420008Russia Universitéde Strasbourg CNRSStrasbourg67000France IJCLab IN2P3-CNRSUniversitéParis-SaclayOrsay91400France

The complete-fusion reaction^(204)Pb(^(48)Ca,2n)^(250)No was used to study two activities of^(250)No with distinct half-lives.A total of 1357 events were observed in the SFiNx neutron detection *** average number of neutrons emitted per spontaneous fission of^(250)No was determined to be(4.1±0.1).The unusually symmetrical shape of the prompt neutron multiplicity distribution was restored and presented for the first *** tests were performed to compare the prompt neutron multiplicity distributions associated with the ground state and K-isomer state decays.

关键词： spontaneous fission prompt neutrons actinide

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exosomes derived from tumor adjacent fibroblasts efficiently target pancreatic tumors

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Acta Pharmaceutica Sinica b 2024年第7期14卷 3009-3026页

作者： Saini Setua Shabia Shabir Poornima Shaji Ana martinez bulnes Anupam Dhasmana Swathi Holla Nivesh K.mittal Nirakar Sahoo Tripti Saini Francesco Giorgianni mohammad Sikander Andrew e.massey bilal b.Hafeez manish K.Tripathi Vincent P.Diego meena Jaggi Junming Yue Nadeem Zafar murali m.Yallapu Stephen w.behrman Sheema Khan Subhash C.Chauhan Department of Pharmaceutical Sciences College of Pharmacyand College of MedicineUniversity of Tennessee Health Science Center(UTHSC)MemphisTN 36163USA Department of Computer Science Islamic University of Science and TechnologyAwantiporaJ&K 192122India Department of Immunology and microbiology School of MedicineUniversity of Texas Rio Grande ValleyMcAllenTX 78504USA South Texas Center of excellence in Cancer Research School of Medicinethe University of Texas Rio Grande ValleyMcAllenTX 78504USA Himalayan School of biosciences and Cancer Research Institute Himalayan Institute of Medical SciencesSwami Rama Himalayan UniversityDehradun 248016India Plough Center for Sterile Drug Delivery Solutions UTHSCMemphisTN 38104USA Department of biology College of SciencesUTRGVMcAllenTX 78539USA National Institute of biomedical Imaging and bioengineering(NIbIb) National Institutes of HealthBethesdaMD 20892USA South Texas Diabetes and Obesity Institute UTRGVMcAllenTX 78504USA Dept.of Laboratory medicine&Pathology University of WashingtonSeattleWA 98195USA Department of Surgery Baptist Memorial Medical EducationBaptist Memorial HospitalMemphisTN 38120USA baptist Health Sciences University MemphisTN 38104USA

The application of extracellular vesicles,particularly exosomes(eXs),is rapidly expanding in the field of medicine,owing to their remarkable properties as natural carriers of biological *** study investigates utilization of exosomes derived from stromal cells of tumor adjacent normal tissues(NAF-eXs)for personalized medicine,which can be derived at the time of diagnosis by endoscopic ***,we show that exosomes(eXs)derived from NAFs demonstrate differential bio-physical characteristics,efficient cellular internalization,drug loading efficiency,pancreatic tumor targeting and delivery of ***-derived eXs(NAF-eXs)were used for loading ormeloxifene(ORm),a potent anti-cancer and desmoplasia inhibitor as a model *** found that ORm maintains normal fibroblast cell phenotype and renders them incompatible to be triggered for a CAF-like phenotype,which may be due to regulation of Ca^(2+) influx in fibroblast ***-eXs-ORm effectively blocked oncogenic signaling pathways involved in desmoplasia and epithelial mesenchymal transition(emT)and repressed tumor growth in xenograft mouse *** conclusion,our data suggests preferential tropism of NAF-eXs for PDAC tumors,thus imply feasibility of developing a novel personalized medicine for PDAC patients using autologous NAF-eXs for improved therapeutic outcome of anti-cancer ***,it provides the opportunity of utilizing this biological scaffold for effective therapeutics in combination with standard therapeutic regimen.

关键词： Pancreatic cancer Tumor adjacent normal tissue fibroblasts(NAF) Desmoplasia extracellular vesicles exosomes Tumor targeting Ormeloxifene Personalized medicine

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Antibacterial HA-coatings on bioresorbable mg alloy

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Journal of magnesium and Alloys 2024年第5期12卷 1965-1985页

作者： K.V.Nadaraia D.V.mashtalyar m.A.Piatkova A.I.Pleshkova I.m.Imshinetskiy m.S.Gerasimenko e.A.belov V.V.Kumeiko D.N.Kozyrev K.A.Fomenko V.V.mostovaya b.R.Torpanov A.R.biktimirov I.S.Osmushko S.L.Sinebryukhov S.V.Gnedenkov Institute of Chemistry Feb RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far eastern Federal University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky National Scientific Center of marine biology Feb RAS 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical Dermatovenerological Dispensary 18 V St.GamarnikaVladivostok 690033Russia NmIC“Treatment and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this study,a calcium-phosphate coating was formed on a mg-mn-Ce alloy by the plasma electrolytic oxidation(PeO).The antibiotic vancomycin,widely used in the treatment of infections caused by Staphylococcus aureus(***),was impregnated into the *** with vancomycin showed high bactericidal activity against *** mechanical and electrochemical properties of the formed coatings were studied,as well as in vitro cytotoxicity tests and in vivo tests on mature male rats were *** to Sem,eDS,XRD and XPS data,coatings had a developed morphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with vancomycin did not reveal any differences,confirming the high roughness of the *** electrochemical tests,an increase in corrosion resistance by more than two times after the application of PeO coatings was *** to the results of an in vivo study,after 28 days of the implantation of samples with calcium phosphate PeO coating and vancomycin,no signs of inflammation were observed,while an inflammatory reaction developed in the area of implantation of bare alloy,followed by *** release tests from the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day *** the experiment,no significant deviations in the condition and behavior of the animals were observed;clinical tests did not reveal a systemic toxic reaction.

关键词： bioactive coatings biocompatibility mg alloy Plasma electrolytic oxidation Hydroxyapatite Vancomycin

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Ground-based and additional science support for SmILe

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earth and Planetary Physics 2024年第1期8卷 275-298页

作者： J.A.Carter m.Dunlop C.Forsyth K.Oksavik e.Donovon A.Kavanagh S.e.milan T.Sergienko R.C.Fear D.G.Sibeck m.Connors T.Yeoman X.Tan m.G.G.T.Taylor K.mcwilliams J.Gjerloev R.barnes D.D.billet G.Chisham A.Dimmock m.P.Freeman D.-S.Han m.D.Hartinger S.-Y.w.Hsieh Z.-J.Hu m.K.James L.Juusola K.Kauristie e.A.Kronberg m.Lester J.manuel J.matzka I.mcCrea Y.miyoshi J.Rae L.Ren F.Sigernes e.Spanswick K.Sterne A.Steuwer T.Sun m.-T.walach b.walsh C.wang J.weygand J.wild J.Yan J.Zhang Q.-H.Zhang Planetary Sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford Appleton Laboratory Space Science Technology Facilities CouncilOxfordshireUK School of Space and environment Beihang UniversityBeijing 100191China Key Laboratory of Space environment monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100017China Department of Space and Climate Physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK birkeland Centre for Space Science Department of Physics and Technology.University of BergenBergenNorway Department of Physics and Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 british Antarctic Survey CambridgeUK Swedish Institute of Space Physics KirunaSweden west Highfield Campus University of SouthamptonUniversity RoadSO171BJUK Goddard Space Flight Center NASAGreenbeltMarylandUSA Athabasca University AthabascaCanada eSTeC European Space AgencyNetherlands University of Saskatchewan SaskatoonCanada The Johns Hopkins University Applied Physics Laboratory LaurelMarylandUSA Swedish Institude of Space Physics UppsalaSE 75121Sweden Tongji University Shanghai 200092China Center for Space Plasma Physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA Polar Research Institute of China Shanghai 200136China Finnish meteorological Institute(FmI) Finland Department of earth and environmental Sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany Canadian Space Agency MontrealCanada GFZ German Research Centre for Geosciences PotsdamGermany Nagoya University Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 Northumbria University Newcastle upon TyneTyne and WearUK NE18ST National Space Science Center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint european Space Agency and Chinese Academy of Sciences Solar wind magnetosphere Ionosphere Link explorer(SmILe)mission will explore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the Northern Hemisphere *** these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the SmILe ***,we describe current community efforts to prepare for SmILe,and the benefits and context various experiments that have explicitly expressed support for SmILe can offer.A dedicated group of international scientists representing many different experiment types and geographical locations,the Ground-based and Additional Science working Group,is facilitating these *** include constructing an online SmILe Data Fusion Facility,the discussion of particular or special modes for experiments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft *** anticipate growing interest and community engagement with the SmILe mission,and we welcome novel ideas and insights from the solar-terrestrial community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupling ground-based experimentation SmILe conjunctions missions

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Transcriptional reprogramming during human osteoclast differentiation identifies regulators of osteoclast activity

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bone Research 2024年第1期12卷 180-198页

作者： morten S.Hansen Kaja madsen maria Price Kent Søe Yasunori Omata mario m.Zaiss Caroline m.Gorvin morten Frost Alexander Rauch molecular endocrinology Laboratory(Kmeb) Department of EndocrinologyOdense University HospitalDK-5000 Odense CDenmark Department of Clinical Research Faculty of Health SciencesUniversity of Southern DenmarkDK-5000 Odense CDenmark Clinical Cell biology Pathology Research UnitDepartment of Clinical ResearchUniversity of Southern DenmarkDK-5000 Odense CDenmark Institute of metabolism and Systems Research(ImSR)and Centre for Diabetes Endocrinology and Metabolism(CEDAM)University of BirminghamBirmingham B152TTUK Centre for membrane Proteins and Receptors(COmPARe) Universities of Birmingham and NottinghamBirmingham B152TTUK Department of molecular medicine University of Southern DenmarkDK-5000 Odense CDenmark Department of Orthopedic Surgery Faculty of MedicineThe University of TokyoTokyo 113-8655Japan Department of Internal medicine 3 Rheumatology and ImmunologyFriedrich-Alexander-University Erlangen-Nürnberg(FAU)and Universitätsklinikum ErlangenD-91054 ErlangenGermany Deutsches Zentrum Immuntherapie(DZI) Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum ErlangenD-91054 ErlangenGermany Steno Diabetes Center Odense Odense University HospitalDK-5000 Odense CDenmark

enhanced osteoclastogenesis and osteoclast activity contribute to the development of osteoporosis,which is characterized by increased bone resorption and inadequate bone *** novel antiosteoporotic therapeutics are needed,understanding the genetic regulation of human osteoclastogenesis could help identify potential treatment *** study aimed to provide an overview of transcriptional reprogramming during human osteoclast *** were differentiated from CD14+monocytes from eight female *** sequencing during differentiation revealed 8980 differentially expressed genes grouped into eight temporal patterns conserved across *** patterns revealed distinct molecular functions associated with postmenopausal osteoporosis susceptibility genes based on RNA from iliac crest biopsies and bone mineral density *** analyses revealed mutual dependencies between temporal expression patterns and provided insight into subtype-specific transcriptional *** donor-specific expression patterns revealed genes at the monocyte stage,such as filamin b(FLNb)and oxidized low-density lipoprotein receptor 1(OLR1,encoding LOX-1),that are predictive of the resorptive activity of mature *** expression of differentially expressed G-protein coupled receptors was strong during osteoclast differentiation,and these receptors are associated with bone mineral density SNPs,suggesting that they play a pivotal role in osteoclast differentiation and *** regulatory effects of three differentially expressed G-protein coupled receptors were exemplified by in vitro pharmacological modulation of complement 5 A receptor 1(C5AR1),somatostatin receptor 2(SSTR2),and free fatty acid receptor 4(FFAR4/GPR120).Activating C5AR1 enhanced osteoclast formation,while activating SSTR2 decreased the resorptive activity of mature osteoclasts,and activating FFAR4 decreased both the number and resorptive activity of mature *** conclus

关键词： osteoclast programming identif

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Ultrafast magneto-optical dynamics in nickel(111)single crystal studied by the integration of ultrafast reflectivity and polarimetry probes

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Chinese Physics b 2024年第3期33卷 65-69页

作者：匡皓余军潇陈洁 H.e.elsayed-Ali 李润泽 Peter m.Rentzepis School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Center for Transformative Science ShanghaiTech UniversityShanghai 201210China Center for Ultrafast Science and Technology Key Laboratory for Laser Plasmas (Ministry of Education)Collaborative Innovation Center of IFSA (CICIFSA)School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Department of electrical and Computer engineering Old Dominion UniversityNorfolkVirginia 23529USA Department of electrical and Computer engineering Texas A&M UniversityCollege StationTexas 77843USA

with the integration of ultrafast reflectivity and polarimetry probes,we observed carrier relaxation and spin dynamics induced by ultrafast laser excitation of Ni(111)single *** carrier relaxation time within the linear excitation range reveals that electron-phonon coupling and dissipation of photon energy into the bulk of the crystal take tens of *** the other hand,the observed spin dynamics indicate a longer time of about 120 *** further understand how the lattice degree of freedom is coupled with these dynamics may require the integration of an ultrafast diffraction probe.

关键词： ultrafast spin dynamics non-equilibrium dynamics multi-probe

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engineering nanomedicines for immunogenic eradication of cancer cells:Recent trends and synergistic approaches

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Acta Pharmaceutica Sinica b 2024年第6期14卷 2475-2504页

作者： Ahmed O.elzoghby Omar Samir Hagar e.emam Ahmed Soliman Riham m.Abdelgalil Yomna m.elmorshedy Kadria A.elkhodairy mahmoud L.Nasr Division of engineering in medicine and Division of Renal medicine Department of MedicineBrigham and Women's HospitalHarvard Medical SchoolBoston 02115MAUSA Cancer Nanotechnology Research Laboratory(CNRL) Faculty of PharmacyAlexandria UniversityAlexandria 21521Egypt

Resistance to cancer immunotherapy is mainly attributed to poor tumor immunogenicity as well as the immunosuppressive tumor microenvironment(Tme)leading to failure of immune *** therapeutic strategies including chemotherapy,radiotherapy,photodynamic,photothermal,magnetic,chemodynamic,sonodynamic and oncolytic therapy,have been developed to induce immunogenic cell death(ICD)of cancer cells and thereby elicit immunogenicity and boost the antitumor immune ***,many challenges hamper the clinical application of ICD inducers resulting in modest immunogenic ***,we outline the current state of using nanomedicines for boosting ICD of cancer ***,synergistic approaches used in combination with ICD inducing nanomedicines for remodeling the Tme via targeting immune checkpoints,phagocytosis,macrophage polarization,tumor hypoxia,autophagy and stromal modulation to enhance immunogenicity of dying cancer cells were *** further highlight the emerging trends of using nanomaterials for triggering amplified ICD-mediated antitumor immune *** reticulum localized ICD,focused ultrasound hyperthermia,cell membrane camouflaged nanomedicines,amplified reactive oxygen species(ROS)generation,metallo-immunotherapy,ion modulators and engineered bacteria are among the most innovative *** challenges,merits and demerits of ICD inducer nanomedicines were also discussed with shedding light on the future role of this technology in improving the outcomes of cancer immunotherapy.

关键词： Immunogenic cell death Immunogenic eradication Nanomedicines Drug delivery Cancer immunotherapy Antitumor immunity T cells Tumor associated antigens Synergistic immune response

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Debaryomyces hansenii supplementation in low fish meal diets promotes growth,modulates microbiota and enhances intestinal condition in juvenile marine fish

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Journal of Animal Science and biotechnology 2024年第1期15卷 253-276页

作者： Ignasi Sanahuja Alberto Ruiz Joana P.Firmino Felipe e.Reyes-López Juan b.Ortiz-Delgado eva Vallejos-Vidal Lluis Tort Dariel Tovar-Ramírez Isabel m.Cerezo miguel A.moriñigo Carmen Sarasquete enric Gisbert Aquaculture Program Institute of Agrifood Research and Technology(IRTA)La Rapita 43540Spain Centro de biotecnologia Acuicola Universidad de Santiago de ChileSantiagoChile Instituto de Ciencias marinas de Andalucia(ICmAN-CSIC) Avda.Republica Saharaui no 2Campus Universitario Rio San PedroPuerto RealCadiz 11510Spain Nucleo de Investigaciones Aplicadas en Ciencias Veterinarias y Agronomicas Facultad de Medicina Veterinaria y AgronomiaUniversidad de Las AmericasSantiagoChile Department of Cell biology Physiologyand ImmunologyUniversitat Autonoma de BarcelonaBarcelonaSpain Centro de Investigaciones biologicas del Noroeste SC CIBNORLa PazMexico Department of microbiology Instituto de Biotecnologia Y Desarrollo Azul(IBYDA)Faculty of SciencesUniversity of Malaga29010 MalagaSpain SCbI Bioinformatic UnitUniversity of Malaga29590 MalagaSpain

background The development of a sustainable business model with social acceptance,makes necessary to develop new strategies to guarantee the growth,health,and well-being of farmed *** hansenii is a yeast species that can be used as a probiotic in aquaculture due to its capacity to i)promote cell proliferation and differen-tiation,ii)have immunostimulatory effects,iii)modulate gut microbiota,and/or iv)enhance the digestive *** provide inside into the effects of *** on juveniles of gilthead seabream(Sparus aurata)condition,we inte-grated the evaluation of the main key performance indicators coupled with the integrative analysis of the intestine condition,through histological and microbiota state,and its transcriptomic *** After 70 days of a nutritional trial in which a diet with low levels of fishmeal(7%)was supplemented with 1.1%of ***(17.2×10^(5) CFU),an increase of ca.12%in somatic growth was observed together with an improve-ment in feed conversion in fish fed a yeast-supplemented *** terms of intestinal condition,this probiotic modu-lated gut microbiota without affecting the intestine cell organization,whereas an increase in the staining intensity of mucins rich in carboxylated and weakly sulphated glycoconjugates coupled with changes in the affinity for certain lectins were noted in goblet *** in microbiota were characterized by the reduction in abundance of several groups of Proteobacteria,especially those characterized as opportunistic *** microarrays-based transcrip-tomic analysis found 232 differential expressed genes in the anterior-mid intestine of ***,that were mostly related to metabolic,antioxidant,immune,and symbiotic *** Dietary administration of *** enhanced somatic growth and improved feed efficiency param-eters,results that were coupled to an improvement of intestinal condition as histochemical and transcriptomic tools *** probiotic ye

关键词： Debaryomyces hansenii Intestine condition Low fish meal diet microbiota Transcriptomics Yeast probiotic

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metrology for sub-Rayleigh-length target positioning in~10^(22)w/cm^(2)laser-plasma experiments

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High Power Laser Science and engineering 2024年第3期12卷 90-105页

作者： e.A.Vishnyakov A.Sagisaka K.Ogura T.Zh.esirkepov b.Gonzalez-Izquierdo C.D.Armstrong T.A.Pikuz S.A.Pikuz w.Yan T.m.Jeong S.Singh P.Hadjisolomou O.Finke G.m.Grittani m.Nevrkla C.m.Lazzarini A.Velyhan T.Hayakawa Y.Fukuda J.K.Koga m.Ishino K.Kondo Y.miyasaka A.Kon m.Nishikino Y.V.Nosach D.Khikhlukha I.P.Tsygvintsev D.Kumar J.Nejdl D.margarone P.V.Sasorov S.weber m.Kando H.Kiriyama Y.Kato G.Korn K.Kondo S.V.bulanov T.Kawachi A.S.Pirozhkov eLI beamlines Facility The Extreme Light Infrastructure ERICDolníBrežanyCzech Republic Kansai Institute for Photon Science(KPSI) QSTKyotoJapan Central Laser Facility Rutherford Appleton LaboratorySTFCHarwell OxfordDidcotUK Institute for Open and Transdisciplinary Research Initiatives Osaka UniversityOsakaJapan Hb11 energy Holdings FreshwaterAustralia Key Laboratory for Laser Plasmas(ministry of education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina Institute of Plasma Physics ASCR PragueCzech Republic FZU-Institute of Physics ASCR PragueCzech Republic Czech Technical University in Prague FNSPEPragueCzech Republic Institute of Laser engineering Osaka UniversityOsakaJapan Institute of Physics National Academy of Sciences of UkraineKyivUkraine ISTeQ AR YerevanArmenia

Tight focusing with very small f-numbers is necessary to achieve the highest at-focus ***,tight focusing imposes strong demands on precise target positioning in-focus to achieve the highest on-target irradiance we describe several near-infrared,visible,ultraviolet and soft and hard X-ray diagnostics employed in a~10^(22)w/cm^(2)laser±plasma *** used nearly 10 J total energy femtosecond laser pulses focused into an approximately1.3-μm focal spot on 5±20μm thick stainless-steel *** discuss the applicability of these diagnostics to determine the best in-focus target position with approximately 5μm accuracy(i.e.,around half of the short Rayleigh length)and show that several diagnostics(in particular,3ωreflection and on-axis hard X-rays)can ensure this *** demonstrated target positioning within several micrometers from the focus,ensuring over 80%of the ideal peak laser intensity *** approach is relatively fast(it requires 10±20 laser shots)and does not rely on the coincidence of low-power and high-power focal planes.

关键词： laser-plasma interaction precise target positioning spectroscopy ultra-high intensity X-rays

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