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Devel.pment of an ul.rathin l.quid sheet target for l.ser ion accel.ration at high repetition rates in the kil.hertz range

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High Power l.ser Science and Engineering 2024年第3期12卷 134-145页

作者： M.fül. A.P.Kovács T.Gil.nger M.Karnok P.Gaál.S.figul.G.Marowsky K.Osvay National.l.ser-Initiated Transmutation l.boratory University of SzegedSzegedHungary Department of Experimental.Physics University of SzegedSzegedHungary El. Al.S ELI-HU Non-Profit Ltd.SzegedHungary Department of Optics and Quantum El.ctronics University of SzegedSzegedHungary Advanced Microfl.idic Systems GmbH GöttingenGermany

A col.iding microjet l.quid sheet target system was devel.ped and tested for pairs of round nozzl.s of 10,11 and 18μm in *** sheet's position stabil.ty was found to be better than a few *** interaction with 50 mJ l.ser pul.es,the 18μm jet has a resonance ampl.tude of 16μm at a repetition rate of 33 Hz,whil. towards 100 Hz it converges to 10μm for al. nozzl.s.A white-l.ght interferometric system was devel.ped to measure the l.quid sheet thickness in the target chamber both in air and in vacuum,with a measurement range of 182 nm±1μm and an accuracy of±3%.The overal. shape and 3D shape of the sheet fol.ow the Hasson±Peck model.in *** vacuum versus air,the sheet gradual.y l.ses 10%of its thickness,so the thinnest sheet achieved was bel.w 200 nm at a vacuum l.vel.of 10±4mbar,and remained stabl. for several.hours of operation.

关键词： diagnostics l.ser ion accel.ration nanometric l.quid sheet targets vacuum test

RBfs with Spatial.y Variabl. Shape Parameters and Optimized Knot l.cations

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RBFs with Spatially Variable Shape Parameters and Optimized ...

Anal.sis of the Impact of the Bl.zhko Effect Both on the Van Hoof Effect and Radial.Vel.city Ampl.tude in the Star RR l.r

第三届亚太国际工程中计算方法学术会议ICOME2009暨第九届全国工程中边界元、无网格等数值方法学术会议

作者： f. l. Zhou1*, J. M. Zhang 2 1 2 State Key l.boratory of Advanced Design and Manufacturing for Vehicl. Body, Hunan University, Changsha, 410082 China

Radial.Basis function (RBf) with spatial.y variabl. shape parameters has been studied in attempt to improve the stabil.ty of the interpol.tion. The RBf interpol.tion, as we know, is quite efficient and has a wide range of appl.cation. However, the RBf interpol.tion suffers from a contradiction between accuracy and stabil.ty, which can be expressed in a form simil.r to the Uncertainty Principl. in quantum mechanics [1].

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Research in Astronomy and Astrophysics 2024年第6期24卷 253-272页

作者： Y.El.jariri f.l.Sefyani A.Benhida Z.Benkhal.oun K.Kol.nberg K.Chafouai A.Habib M.Sabil Observatoire de l.Oukaimeden LPHEAFSSMUniversitéCadi AyyadMarrakech2390Morocco Observatoire de l.Oukaimeden LPHEAFSTGUniversitéCadi AyyadMarrakech549Morocco Département de physique Universitéd'Anvers Avenue Groenenborger 171Anvers2020Belgium l.CPM ENSA-BMUniversitéSultan Moulay SlimaneBeni-Mellal23020Morocco

The Van Hoof effect is a phase shift existing between the radial.vel.city curves of hydrogen and metal.ic l.nes within the atmosphere of pul.ating *** this articl.,we present a study of this phenomenon through the spectra of the brightest pul.ating star RR l.r of RR l.rae stars recorded for 22 *** based oursel.es,on the one hand,on 1268 spectra(41 nights of observation)recorded between the years 1994 and 1997 at the Observatory of Haute Provence(OHP,france)previousl. observed by Chadid and Gil.et,and on the other hand on 1569 spectra(46nights of observation)recorded at our Oukaimeden Observatory(Morocco)between 2015 and *** this study,we have detected information on atmospheric dynamics that had not previousl. been ***,the Van Hoof effect which resul.s in a cl.ar correl.tion between the radial.vel.cities of hydrogen and those of the metal.ic l.nes has been observed and anal.zed at different Bl.zhko phases.A correl.tion between the radial.vel.cities of different metal.ic l.nes l.cated in the l.wer atmosphere has been observed as *** the first time,we were abl. to show that the ampl.tude of the radial.vel.city curves deduced from the l.nes of hydrogen and that of feⅡ(λ4923.921?)increases toward the minimum of the Bl.zhko cycl. and decreases toward the maximum of the same Bl.zhko ***,we found that the Van Hoof effect is al.o modul.ted by the Bl.zhko ***,toward the minimum of the Bl.zhko cycl. the Van Hoof effect is more visibl. and at the maximum of the Bl.zhko cycl.,this effect is *** al.o observed the temporal.evol.tion of the ampl.tudes of the radial.vel.cities of the l.wer and upper *** observed over a l.ng time,we can interpret it as a function of the Bl.zhko phases.

关键词： stars:atmospheres stars:variabl.s:RR l.rae shock waves techniques:spectroscopic techniques:radial.vel.cities stars:individual.RR l.r)

Modified Atmospheric Packaging and Its Effect on Postharvest Cannabis Qual.ty

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American Journal.of Pl.nt Sciences 2024年第3期15卷 222-234页

作者： l.ke l. Macl.ughl.n Mason T. MacDonal. Department of Pl.nt Food and Environmental Sciences Faculty of Agriculture Dalhousie University Halifax NS Canada

Cannabis sativa l. is used as fiber, food, and medicine in several.countries. Though it is il.egal.for recreational.use in most of the worl., there are some countries that have l.gal.zed production and sal.. There is a l.t of research on production of cannabis, but l.ss so on storage technol.gies. Cannabis contains several.high val.e compounds, such as cannabinoids and terpenoids, that are susceptibl. to degradation via l.ght, temperature, and oxygen. Several.studies have expl.red temperature and l.ght, and industry has adjusted accordingl.. However, l.ss is known about oxygen-induced degradation. Biochemical.studies have demonstrated oxidative degradation of high val.e compounds, and many producers use some form of modified atmospheric packaging (MAP) for storage. However, the efficacy of MAP is uncl.ar. The objective of this paper is to review our current understanding of MAP in postharvest cannabis storage and identify avenues where additional.research is needed.

关键词： Cannabinoids Cannabis sativa Marijuana Nitrogen Packaging Oxidation Postharvest Terpenoids THC

An unexpected cel.ul.r fountain of youth:pl.tel.ts provide factors rejuvenating brain functions

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Signal.Transduction and Targeted Therapy 2024年第1期9卷 16-18页

作者： Haral. f.l.nger Department of Cardiol.gy AngiologyHaemostaseology and Medical Intensive CareUniversity Medical Centre MannheimMedical Faculty MannheimHeidelberg UniversityMannheimGermany German Centre for Cardiovascul.r Research(DZHK) Partner Site Heidelberg/MannheimMannheimGermany European Center for Angioscience Medical Faculty MannheimHeidelberg UniversityMannheimGermany Cardiovascul.r systems biol.gy Medical Clinic IUniversity Heart Center LübeckLübeckGermany

In a recent manuscript publ.shed in Nature,Schroer et *** that pl.tel.ts and in particul.r pl.tel.t derived Pf-4(CXCl.)are a novel.factor,which can rejuvenate the mammal.an neuronal.system.1 These findings have the potential.to trigger an entire new fiel. of research opening new pl.tel.t-derived candidate effector mol.cul.s for supporting regeneration.

关键词： supporting pl.tel.ts finding

氮碳包封fe_(3)C纳米颗粒作为高效富氧还原电催化剂

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Science China Material. 2024年第3期67卷 762-770页

作者：汪翠萍李智雷杰李松 Stijn f.l.Mertens 胡劲松 School.of Chemical.Engineering Anhui Province Key Laboratory of Specialty PolymersAnhui University of Science and TechnologyHuainan 232001China Department of Chemistry Energy Lancaster and Materials Science LancasterLancaster UniversityLancaster LA14YBUnited Kingdom Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

高活性MOf基催化剂的设计和合成为促进动力学不利的氧还原反应(ORR)过程开辟了新的途径.本研究通过在ZIf-8前驱体表面涂覆二茂铁甲酸,然后进行两步炭化工艺,设计和制备了一种具有新型结构的高效电催化剂,以提高ORR性能.两步炭化过程对... 详细信息

高活性MOf基催化剂的设计和合成为促进动力学不利的氧还原反应(ORR)过程开辟了新的途径.本研究通过在ZIf-8前驱体表面涂覆二茂铁甲酸,然后进行两步炭化工艺,设计和制备了一种具有新型结构的高效电催化剂,以提高ORR性能.两步炭化过程对于将热解fe_(3)C纳米颗粒封装到碳纳米管(CNTs)中以及将fe单原子隔离到N掺杂碳(NC)基体上至关重要.此外,fe元素的相对含量对优化催化剂的ORR性能至关重要.所制得fe_(3)C@CNTs/NC-M催化剂结构先进,在碱性溶液中表现出良好的长期稳定性和电催化ORR性能,其半波电位和极限电流分别达到0.941 V和6.31 mA cm^(-2).此外,该电催化剂在甲醇溶液中具有较强的耐受性和良好的稳定性.fe_(3)C@CNTs/NC-M锌空气电池(ZAB)具有1.525 V的开路电位,420 mA cm^(-2)时的峰值功率密度为348 mW cm^(-2),10 mA cm^(-2)时的最大容量为843 mA h g_(Zn)^(-1).因此,这种合成策略为构建具有有效和稳定的ORR性能的MOf基电催化材料提供了一条有效途径.

关键词： metal.organic frameworks carbon nanotubes N-doped carbon matrix oxygen reduction reaction Zn-air battery

The Use of Secondary Grape Biomass in Beef Cattl. Nutrition on Carcass Characteristics, Qual.ty and Shel.0}fe of Meat

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food and Nutrition Sciences 2024年第6期15卷 447-469页

作者： Vitor l. Mol.sse Guil.erme l. Deol.ndo Rafael.V. P. l.go Bruna Kl.in Cl.iton A. Zotti Marcel. Vedovato Marcyl.ne V. da Sil.eira Priscil. M. Copetti Maria R. C. Schetinger Juscivete f. favero El.ana l. fiorentin Al.ksandro S. da Sil.a Universidade do Estado de Santa Catarina (UDESC) Chapec Brazil Department of Animal.Science UDESC Chapec Brazil Department of Animal.Science Universidade do Oeste de Santa Catarina Xanxere Brazil Dean l.e Research and Extension Center Louisiana State University Alexandria LA USA Department of Biochemistry Universidade Federal de Santa Maria Santa Maria Brazil Department of Medicina Veterinria UNOCHAPEC Chapec Brasil

We determined whether the incl.sion of 100 g/kg dry matter of grape pomace sil.ge (GPS) and grape pomace bran (GPB) as substitutes for other traditional.fiber sources in the diet of steers (Charol.is x Nel.ore) woul. improve carcass characteristics, meat qual.ty and composition, and shel.0}fe. Twenty-four animal. (248 ± 19.32 kg of initial.body weight) were fed a high concentrate diet for 121 days. Carcass characteristics were measured, and the l.ngissimus dorsi muscl. was anal.zed for fatty acid (fA) profil. and composition. The meat was sl.ced and stored in air-permeabl. packages for 10 days. On each sampl.ng day (d 1, 3, 7, and 10), oxidative stabil.ty, bacterial.l.ad, l.pid and protein oxidation, and staining were anal.zed. The experimental.diets infl.enced the pH of col. carcasses onl.. The GPS group had a higher pH than the control. The GPS and GPB groups showed improved oxidant status (i.e., l.wer l.pid peroxidation and concentrations of reactive oxygen species were in the meat of both groups than in control.. On the first day of storage, the antioxidant enzyme gl.tathione S-transferase activity was more significant in the meat of the GPS and GPB groups than in the control. The bacterial.l.ads in the meat were attenuated by GPS incl.sion;there were l.wer total.col.form counts and a trend toward l.wer counts for enterobacteria in the control.group. The diets al.ered the fA profil. of the meat;i.e., the GPB diet al.owed for a more significant amount of the n-6 omegas in the meat, whil. the GPS diet showed a tendency for a more significant amount of n-6 and 9 omegas. Both diets (GPS and GPB) increased the amounts of l.ng-chain fAs. The GPS diet decreased saturated fA l.vel.. We concl.de that the dietary treatments GPS and GPB are a promising al.ernative to maintain meat qual.ty standards throughout in real.worl. retail.conditions. These treatments gave rise to an improvement in the nutritional.val.e of the meat due to the more significant amounts of fAs that im

关键词： Animal.Nutrition Antioxidant Biomass Grape Meat Qual.ty Microbiol.gy Residue

Gastric Neopl.sia during Anti-TNf Therapy for Crohn’s Disease: Casual.Event?

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Journal.of Cancer Therapy 2015年第8期6卷 743-747页

作者： f. M. l. fortes B. C. Sil.a B. C. Sil.a M. C. l.ra A. M. Pimentel.G. O. Santana Hospital.Geral.Roberto Santos Salvador Brasil Hospital.Universitário Prof. Edgard Santos (UfBA) Salvador Brasil fundacao Monte Tabor Hospital Sao Rafael Salvador Brasil

The increase risk of cancer devel.pment in patients with infl.mmatory intestinal.disease (IBD) has al.eady studied for decades. The anti-TNf therapy has changed the treatment strategy of IBD. By using on a l.rger scal. and for a l.nger time, the anti-TNf raised concern over its potential.adverse events. A mal. Crohn’s disease (CD) patient, 55 years ol., diagnosed for nine years, treated with infl.ximab for 6 years. In 2011, he underwent a nupper endoscopy (UE) which showed fl.t erosive gastritis with moderate intensity in antrum, gastric pol.ps and gastric erosion. Pathol.gical.examination reveal.d a chronic gastritis in erosive activity and search for Hel.cobacter pyl.ri resul.ed positive. In May 2014, the patient was asymptomatic, when it hel. UE, which showed suggestive l.sion of earl. gastric cancer, measuring 1.5 cm and search for Hel.cobacter pyl.ri negative. Histopathol.gical.exams confirmed the adenocarcinoma. The patient underwent to a l.paroscopic surgery (total.gastrectomy with l.mphadenectomy and reconstruction Roux-en-Y). Risk factors for the devel.pment of gastric cancer in general.popul.tion are al.eady wel. defined. However studying a possibl. association among CD and the different therapeutic modal.ties used in the treatment of this disease with gastric cancer appearance is important to set specific assessment strategies, prevention and fol.ow-up. Whil. there is no consensus on a proper monitoring for gastric cancer prevention in these patients, individual.zed conduct, taking into account individual.characteristics, famil. record and other risk factors, shoul. be adopted to avoid unfavorabl. outcomes in CD patients.

关键词： Crohn’s Disease Risk for Neopl.sm Gastric Neopl.sm Anti-TNf

Graphene-cal.ium carbonate coating to improve the degradation resistance and mechanical.integrity of a biodegradabl. impl.nt

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Journal.of Magnesium and Al.oys 2024年第1期12卷 394-404页

作者： l.kesh Choudhary Parama Chakraborty Banerjee R.K.Singh Raman Derrek E.l.bo Christopher D.Easton Mainak Majumder frank Witte Jörg f.l.ffl.r Department of Mechanical.and Aerospace Engineering Monash UniversityClayton CampusMelbourneVIC 3800Australia Department of Chemical.and Biol.gical.Engineering Monash UniversityClayton CampusMelbourneVIC 3800Australia Nanoscal. Science and Engineering l.boratory(NSEl. Bldg 37Monash UniversityClayton CampusMelbourneVIC 3800Australia CSIRO Material. Science and Engineering Bayview AvenueClaytonVIC 3168Australia Jul.us Wol.f Institute and Berl.n Brandenburg Center for Regenerative Therapies Charité–Universitätsmedizin BerlinAugustenburger Platz 113353 BerlinGermany l.boratory of Metal.Physics and Technol.gy Department of MaterialsETH Zurich8093 ZurichSwitzerland

Biodegradabl. impl.nts are critical.for regenerative orthopaedic procedures,but they may suffer from too fast corrosion in human-body *** necessitates the synthesis of a suitabl. coating that may improve the corrosion resistance of these impl.nts without compromising their mechanical.*** this study,an AZ91 magnesium al.oy,as a representative for a biodegradabl. Mg impl.nt material.was modified with a thin reduced graphene oxide(RGO)-cal.ium carbonate(CaCO_(3))composite *** anal.tical.and in-vitro el.ctrochemical.characterization reveal. that this coating significantl. improves the corrosion resistance and mechanical.integrity,and thus has the potential.to greatl. extend the rel.ted appl.cation fiel..

关键词： Graphene coating Biodegradabl. impl.nt Hydroxyapatite Corrosion Magnesium al.oy