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Photonuclear reactions on stable isotopes of selenium at bremsstrahlung end-point energies of 10-23 MeV

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Chinese Physics C 2024年第2期48卷 91-103页

作者： f.A.Rasulova n.V.Aksenov S.I.Alekseev R.A.Aliev S.S.Belyshev I.Chuprakov n.Yu.fursova A.S.Madumarov J.H.Khushvaktov A.A.Kuznetsov B.S.Yuldashev Joint Institute for nuclear Research DubnaRussia Institute of nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan TashkentUzbekistan faculty of Chemistry of Lomonosov Moscow State University MoscowRussia national Research Center"Kurchatov Institute" MoscowRussia Skobeltsyn Institute of nuclear Physics of Lomonosov Moscow State University MoscowRussia faculty of Physics of Lomonosov Moscow State University MoscowRussia Institute of nuclear Physics AlmatyRepublic of Kazakhstan

In this study,experiments were performed at bremsstrahlung end-point energies of 10-23 MeV with the beam from the MT-25 microtron using theγ-activation *** experimental values of relative yields were compared with theoretical results obtained on the basis of TALYS with the standard parameters and the combined model of photonucleon *** isospin splitting in the combined model of photonucleon reactions allows describing experimental data on reactions with proton escape in the energy range from 10 to 23 ***,taking into account isospin splitting is necessary for a correct description of the decay of the giant dipole resonance.

关键词： bremsstrahlung photon cross section isospin splitting giant dipole resonance

Haemorrhage after thrombectomy with adjuvant thrombolysis in unknown onset stroke depends on high early lesion water uptake

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Stroke & Vascular neurology 2024年第4期9卷 390-398页

作者： Gabriel Broocks Lukas Meyer Uta Hanning Tobias Djamsched faizy Matthias Bechstein Helge Kniep noel Van Horn Gerhard Schön Ewgenia Barow Götz Thomalla Jens fiehler Andre Kemmling Department of Diagnostic and Interventional neuroradiology University Medical Center Hamburg-EppendorfHamburgGermany Department of Medical Biometry and Epidemiology University Medical Center Hamburg EppendorfHamburgGermany Department of neurology University Medical Center Hamburg-EppendorfHamburgGermany Department of neuroradiology University MarburgMarburgGermany

Background and purpose In wake-up stroke,CT-based quantitative net water uptake(nWU)might serve as an alternative tool to MRI to guide intravenous thrombolysis with alteplase(IVT).An important complication after IVT is symptomatic intracerebral haemorrhage(sICH).As nWU directly implies ischaemic lesion progression,reflecting blood-brain barrier injury,we hypothesised that nWU predicts sICH in patients who had a ischaemic stroke undergoing thrombectomy with unknown *** Consecutive analysis of all patients who had unknown onset anterior circulation ischaemic stroke who underwent CT at baseline and endovascular treatment between December 2016 and October *** nWU was assessed on baseline *** primary endpoint was *** association of nWU and other baseline parameters to sICH was investigated using inverse-probability weighting(IPW)*** A total of 88 patients were included,of which 46 patients(52.3%)received *** median nWU was 10.7%(IQR:5.1–17.7).The proportion of patients with any haemorrhage and sICH were 35.2%and 13.6%.nWU at baseline was sign.f.cantly higher in patients with sICH(19.1%vs 9.6%,pnd the median Alberta Stroke Program Early CT Score(ASPECTS)was lower(5 vs 8,pfollowing IPW,there was no association between IVT and sICH in unadjusted ***,after adjusting for ASPECTS and nWU,there was a sign.f.cant association between IVT administration and sICH(14.6%,95%CI:3.3%to 25.6%,pnclusion In patients with ischaemic stroke with unknown onset,the combination of high nWU with IVT is directly linked to higher rates of *** ASPECTS for evaluating the extent of the early infarct lesion,quantitative nWU could be used as an imaging biomarker to assess the degree of blood-brain barrier damage in order to predict the risk of sICH in patients with wake up stroke.

关键词： throm thrombolysis high

Linking IL-10 signaling with lipid metabolic programs in macrophages:dysregulated ceramide homeostasis drives colitis

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Signal Transduction and Targeted Therapy 2024年第7期9卷 2835-2836页

作者： Imke Atreya Markus f.neurath Department of Medicine 1 University Hospital of ErlangenFriedrich-Alexander University Erlangen-NürnbergErlangenGermany Deutsches Zentrum Immuntherapie(DZI) ErlangenGermany

In a recent study published in nature,York and coworkers identified the immunometabolic regulation of mono-unsaturated fatty acid(MUfA)pools and the subsequent increase in sphingolipid biosynthesis in TLR2-activated macrophages as an important link between impaired IL-10 signaling and the development of intestinal inflammation.1 Thus,targeted interference with the newly identified IL-10/MUfA/sphingolipid axis appears as a promising strategy to restore immunometabolic homeostasis in the intestine of patients with inflammatory bowel diseases(IBD).

关键词： homeostasis impaired intestine

Quintom cosmology and modified gravity after DESI 2024

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Science Bulletin 2024年第17期69卷 2698-2704页

作者： Yuhang Yang Xin Ren Qingqing Wang Zhiyu Lu Dongdong Zhang Yi-fu Cai Emmanuel n.Saridakis Department of Astronomy School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Key Laboratory for Researches in Galaxies and Cosmology School of Astronomy and Space ScienceUniversity of Science and Technology of ChinaHefei 230026China Deep Space Exploration Laboratory Hefei 230088China Department of Physics Tokyo Institute of TechnologyTokyo 152-8551Japan Kavli IPMU(WPI) UTIASThe University of TokyoChiba 277-8583Japan national Observatory of Athens Lofos Nymfon 11852Greece Departamento de Matemáticas Universidad Católica del NorteAntofagasta 1270398Chile

We reconstruct the cosmological background evolution under the scenario of dynamical dark energy through the Gaussian process approach,using the latest Dark Energy Spectroscopic Instrument(DESI)baryon acoustic oscillations(BAO)combined with other *** results reveal that the reconstructed dark-energy equation-of-state(EoS)parameter w(z)exhibits the so-called quintom-B behavior,crossing-1 from phantom to quintessence regime as the universe *** investigate under what situation this type of evolution could be achieved from the perspectives of field theories and modified *** particular,we reconstruct the corresponding actions for f(R),f(T),and f(Q)gravity,*** explicitly show that,certain modified gravity can exhibit the quintom dynamics and fit the recent DESI data efficiently,and for all cases the quadratic deviation.f.om theΛCDM scenario is mildly favored.

关键词： DESI Dark energy Quintom cosmology Modified gravity

Inflow and outflow permeability tests in a very soft clay under low stresses

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.S.Vargas f.A.B.Danziger f.R.Lopes T.Lunne federal University of Rio de Janeiro Rio de JaneiroBrazil norwegian Geotechnical Institute OsloNorway

In situ inflow and outflow permeability tests with the BAT probe at SarapuíII soft clay test site are presented.A description of the BAT permeability test is provided,discussing its advantages and shortcomings,especially in the case of very soft clays under low *** pressures were monitored during probe installation and were found to be slightly lower than piezocone u2 pore pressures,consistent with the position of the *** role of filter tip saturation was investigated after the usual saturation procedure provided an unsatisfactory pore pressure response during probe *** show that the vacuum saturation procedure provides adequate response during installation and increases the reliability of the coefficient of permeability determination in early *** inflow and outflow tests yielded similar results,indicating that careful execution of the test can lead to good test repeatability regardless of the loading *** sequences of alternated inflow and outflow tests have yielded similar results,indicating that soil reconsolidation and filter clogging were negligible in the tests *** are presented concerning the relationship between index parameters and the in situ coefficient of permeability for SarapuíII clay,which plot outside the range of existing databases.

关键词： Permeability test Soft clay BAT probe Inflow and outflow tests

f4-TCnQ concentration dependence of the current voltage characteristics in the Au/P3HT:PCBM:f4-TCnQ/n-Si(MPS) Schottky barrier diode

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Chinese Physics B 2014年第11期23卷 512-522页

作者： E.Yaglioglu O.Tzn Ozmen Department of Physics Faculty of Arts and Sciences Dzce University

In this study, we investigate some main electrical parameters of the gold/poly（3-hexylthiophene）：[6,6]-phenyl C61 bu- tyric acid methyl ester：2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane/n-type silicon （Au/P3HT：PCBM：f4-TCnQ/n- Si） metal-polymer-semiconductor （MPS） Schottky barrier diode （SBD） in terms of the effects of f4-TCnQ concentration （0%, 1%, and 2%）. f4-TCnQ-doped P3HT：PCBM is fabricated to figure out the p-type doping effect on the device per- formance. The main electrical parameters, such as ideality factor （n）, barrier height （ФB0）, series resistance （Rs）, shunt resistance （Rsh）, and density of interface states （nss） are determined from the forward and reverse bias current-voltage （l-V） characteristics in the dark and at room temperature. The values of n, Rs, ФB0, and nss are sign.f.cantly reduced by using the 1% f4-TCnQ doping in P3HT：PCBM：f4-TCnQ organic blend layer, additionally, the carrier mobility and current are increased by the soft （1%） doping. The most ideal values of electrical parameters are obtained for 1% f4-TCnQ used diode. On the other hand, the carrier mobility and current for the hard doping （2%） become far away from the ideal diode values due to the unbalanced generation of holes/electrons and doping-induced disproportion when compared with 1% f4-TCnQ doping. These results show that the electrical properties of MPS SBDs strongly depend on the f4-TCnQ doping and doping concentration of interfacial P3HT：PCBM：f4-TCnQ organic layer. Moreover, the soft f4-TCnQ dop- ing concentration （1%） in P3HT：PCBM：f4-TCnQ organic layer sign.f.cantly improves the electrical characteristics of the Au/P3HT：PCBM：f4-TCnQ/n-Si （MPS） SBDs which enables the fabricating of high-quality electronic and optoelectronic devices.

关键词： P3HT:PCBM:f4-TCnQ interfacial organic layer f4-TCnQ doping concentration Schottky bar-rier diodes I-V characteristics

Impact of payment source, referral site, and place of residence on outcomes after allogeneic transplantation in Mexico

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World Journal of Transplantation 2024年第2期14卷 76-87页

作者： Andrés Gómez-De León Yesica A López-Mora Valeria García-Zárate Ana Varela-Constantino Sergio U Villegas-De Leon Xitlaly J González-Leal Raúl del Toro-Mijares Anna C Rodríguez-Zúñiga Juan.f.Barrios-Ruiz Victor Mingura-Ledezma Perla R Colunga-Pedraza Olga G Cantú-Rodríguez César H Gutiérrez-Aguirre Luz Tarín-Arzaga Elías E González-López David Gómez-Almaguer Hematology Service Universidad Autónoma de Nuevo LeónFacultad de Medicina y Hospital Universitario Dr.JoséEleuterio GonzálezMonterrey 64460Nuevo LeónMexico Hemato-logy Service Clínica Gómez AlmaguerMonterrey 64710Nuevo LeónMexico Hematology Service Instituto Tecnológico de Estudios Superiores de MonterreyTec SaludEscuela de Medicina Ignacio SantosMonterrey 64710Nuevo LeónMexico

BACKGROUnD The impact of social determinants of health in allogeneic transplant recipients in low-and middle-income countries is poorly *** observational study analyzes the impact of place of residence,referring institution,and transplant cost coverage(out-of-pocket vs government-funded vs private insurance)on outcomes after allogeneic hematopoietic stem cell transplantation(alloHSCT)in two of Mexico's largest public and private *** To evaluate the impact of social determinants of health and their relationship with outcomes among allogeneic transplant recipients in *** In this retrospective cohort study,we included adolescents and adults≥16 years who received a matched sibling or haploidentical transplant from *** were selected without regard to their diagnosis and were sourced from both a private clinic and a public University Hospital in *** payment groups were compared:Out-of-pocket(OOP),private insurance,and a federal Universal healthcare program“Seguro Popular”.Outcomes were compared between referred and institution-diagnosed patients,and between residents of nuevo Leon and *** outcomes included overall survival(OS),categorized by residence,referral,and payment *** outcomes encompassed early mortality,event-free-survival,graft-versus-host-relapse-free survival,and non-relapse-mortality(nRM).Statistical analyses employed appropriate tests,Kaplan-Meier method,and Cox proportional hazard regression *** software included SPSS and R with tidycmprsk *** Our primary outcome was overall *** included 287 patients,n=164 who lived out of state(57.1%),and n=129 referred from another institution(44.9%).The most frequent payment source was OOP(n=139,48.4%),followed by private insurance(n=75,26.1%)and universal coverage(n=73,25.4%).no differences in OS,event-free-survival,nRM,or graft-versus-host-relapse-free survival were observed for patients dia

关键词： Hematopoietic cell transplant Social determinants of health Geography Haploidentical Out-of-pocket financial toxicity Survival Health services and outcomes Hematopoietic malignancy Aplastic anemia

ACTIVATIOn MECHAnISM Of AMORPHOUS ni_(63)Zr_(32)La_5 ALLOY HYDROGEnATIOn CATALYST

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Acta Metallurgica Sinica(English Letters) 1996年第4期9卷 291-297页

作者： Wang, X.K. Shen, n.f. Lei, G.J. Gu, H.C.

The catalytic activity of amorphous ni_63 Zr_32 La_5 ribbon.f.r hydrogenation of ethyne to ethylene can be greatly enhanced when the alloy ribbon is pretreated with dilute acid solution,heated under negative atmosphere pressure and subjected to hydrogen reduction successively. The change of surface state of the ribbon during the activation has been analysed by AES and XPS. The surface of as-received ribbon is covered with a thin.f.lm of La_2 O_3. After pretreatment. the surface concentrations of both ni and Zr increase obviously, whereas the surface concentration of La decreases ***, on the surface of activated catalyst the ni and niO disperse finely on the matrix consisting of oxides of both Zr and La and a small amount of fluorides of Zr and La.

关键词： amorphous ni_(63) Zr_(32) La_5 alloy catalyst activation mechanism

Radiative capture of proton through the ^(14)n(p,γ)^(15)O reaction at low energy

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Chinese Physics C 2024年第4期48卷 183-192页

作者： B.f.Irgaziev Abdul Kabir Jameel-Un nabi national University of Uzbekistan Tashkent 100174Uzbekistan Space and Astrophysics Research lab National Centre of GIS and Space ApplicationsDepartment of Space ScienceInstitute of Space TechnologyIslamabad 44000Pakistan University of Wah Quaid AvenueWah Cantt 47040PunjabPakistan

The CnO cycle is the main source of energy in stars more massive than our *** process defines the energy production,the duration of which can be used to determine the lifetime of massive *** cycle is an important tool for determining the age of globular *** proton capture via p+^(14)n→^(15)O+γ,at energies of astrophysical interest,is an important process in the CnO *** this project,we apply a potential model to describe both non-resonant and resonant reactions in the channels where radiative capture occurs through electric E1 *** employed the R-matrix method to describe the ongoing reactions via M1 resonant transitions,when it was not possible to correctly reproduce the experimental data using the potential *** partial components of the astrophysical S-factor are calculated for all possible electric and magnetic dipole transitions in ^(15)*** linear extrapolated S-factor at zero energy(S(0))agrees well with earlier reported values for all transition types considered in this *** on the value of the total astrophysical S-factor,depending on the collision energy,we calculate the nuclear reaction rates for p+^(14)n→^(15)O+γ.The computed rates agree well with the results reported in the nACRE II Collaboration and most recent existing measurements.

关键词： CnO cycle potential model R-matrix method cross-section astrophysical S-factor nuclear rates.