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Effect of nanosilver(nAg) on disinfection, growth, and chemical composition of young barley leaves under in vitro conditions

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Journal of Integrative Agriculture 2019年第8期18卷 1871-1881页

作者： Marcelina Krupa-Malkiewicz jan oszmiański Sabina Lachowicz Malgorzata Szczepanek Boguslawa Jalkiewicz Kamila Pachnowska Ireneusz Ochmian Department of Plant Genetics Breeding and Biotechnology West Pomeranian University of Technology Szczecin Szczecin 71- 434 Poland Department of Fruit Vegetable and Plant Nutraceutical Technology Wroclaw University of Environmental and Life Sciences Wroclaw 51-630 Poland Department of Agrotechnology UTP University of Science and Tec hnology Bydgoszcz 85-225 Poland Departament of Cereal Crop Production Institute of Soil Science and Plant Cultivation National Research Institute Pulawy 24- 100 Poland Department of Horticulture West Pomeranian University of Technology Szczecin Szczecin 71-434 Poland

Cereals, including barley, have been playing a key role in human diet for a long time. The objective of the present study was to determine the effect of nanosilver(nAg) on limitation of infections, morphological features, and their chemical composition of young barley seedlings under in vitro condition. Addition of 0, 2, 4, 6 and 8 mg dm^–3 nAg into MS medium was *** results showed that the effect on the morphological features depended on the nAg concentration. The addition of 6 and 8 mg dm^–3 nAg into MS medium limited the number of infected barley embryos in vitro, whereas 4 and 8 mg dm^–3 nAg resulted in the highest seedlings with the longest roots. nAg in the medium affected the colour of leaves and increased the contents of chlorophyll and β-carotene, in particular in seedlings growing in MS medium supplied with 6 mg dm^–3 *** addition of 8 mg dm^–3 had the greatest effect on the contents of vitamin C and E in young barley seedlings. It was found that the contents of K and Ca in the young barley leaves were lower, as compared to control plants. The presence of 6 mg dm^–3 nAg in the medium resulted in an increased contents of N, Mg, Zn, Cu, and P. Hence, a diversified effect of nAg on individual groups of polyphenolic compounds was noticed. The presence of 2 and 8 mg dm^–3 nAg caused higher content values of polyphenolic compounds in young barley leaves.

关键词： polyphenols mineral compositions micro propagation contaminations Hordeum vulgare

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Ghost species form an important component of the epiphytic lichens in temperate forests

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FOREST ECOSYSTEMS 2025年第1期12卷 20-28页

作者： Vondrak, jan Kosnar, Jiri Svoboda, Stanislav Palice, Zdenek Soun, Jaroslav Kubasek, Jiri Riha, Pavel Malicek, Jiri Rydlo, jan Hofmeister, Jenyk Czech Acad Sci Inst Bot Zamek 1 CZ-25243 Pruhonice Czech Republic Univ South Bohemia Fac Sci Dept Bot Branisovska 1160 CZ-37005 Ceske Budejovice Czech Republic Museum Dr Bohuslav Horak Rokycany Branch Museum West Bohemia Nam J Urbana 141 CZ-33701 Rokycany Czech Republic Univ South Bohemia Fac Sci Dept Expt Plant Biol Branisovska 31-1160 CZ-37005 Ceske Budejovice Czech Republic Czch Univ Life Sci Prague Fac Forestry & Wood Sci Dept Forest Ecol Kamycka 129 CZ-16500 Prague Czech Republic Global Change Res Inst Czech Acad Sci Global Change Res Inst Belidla lidla 986-4a CZ-60300 Brno Czech Republic

Sequencing of environmental samples has great potential for biodiversity research, but its application is limited by the lack of reliable DNA barcode databases for species identifications. Such a database has been created for epiphytic lichens of Europe, allowing us to compare the results of environmental sequencing with standard taxonomic surveys. The species undetected by taxonomic surveys (what we term the ghost component) amount to about half of the species actually present in hectare plots of Central European forests. Some of these, which currently occur only as diaspores or weakly developed thalli, are likely to be favoured in the course of global change. The ghost component usually represents a larger fraction in managed forests than in old-growth unmanaged forests. The total species composition of different plots is much more similar than suggested by taxonomic surveys alone. On a regional scale, this supports the well-known statement that "everything is everywhere, but, the environment selects".

关键词： Biodiversity DNA barcode ITS Environmental sampling Global change Lichen Mitochondrial SSU Taxonomic survey

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Chinese contributions to liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2025年第1期24卷 1-5页

作者： jan Lerut Institute for Experimental and Clinical Research(IREC) Universitécatholique Louvain(UCL)Avenue Hippocrate 561200 Woluwe Saint PierreBrusselsBelgium

The first liver transplantation(LT)in humans was performed by Thomas Starzl on March 1,1963[1,2](Fig.1).During the period 1963-1983,this challenging procedure was performed in four centers only,one in the USA and three in Western Europe:Denver,Cambridge,Hannover and *** collected experience including only 540 cases(meaning 27(!)cases yearly)was the basis of the 1983 National Institutes of Health(NIH)development consensus conference leading to the conclusion that LT could become“a promising alternative to the current therapy in the management of the late phase of several forms of serious liver disease…candidates are those who exhausted alternative medical and surgical treatments…and are approaching the terminal phase of their illness”.Patients presenting liver tumors and inherited,liver based,metabolic diseases could also be considered for LT[3].This conference put forward ten absolute and five relative contraindications restricting thereby the access to LT to a minority of very well selected liver diseased patients.

关键词： thereby approaching conclusion

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Oligodendroglial heterogeneity in health,disease,and recovery:deeper insights into myelin dynamics

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Neural Regeneration Research 2025年第11期20卷 3179-3192页

作者： Pieter-jan Serneels Julie D.De Schutter Lies De Groef Lieve Moons Steven Bergmans KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionNeural Circuit Development&Regeneration Research GroupLeuvenBelgium KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionCellular Communication&Neurodegeneration Research GroupLeuvenBelgium

Decades of research asserted that the oligodendroglial lineage comprises two cell types:oligodendrocyte precursor cells and ***,recent studies employing single-cell RNA sequencing techniques have uncovered novel cell states,prompting a revision of the existing *** forward,the oligodendroglial lineage should be delineated into five distinct cell states:oligodendrocyte precursor cells,committed oligodendrocyte precursor cells,newly formed oligodendrocytes,myelin-forming oligodendrocytes,and mature *** new classification system enables a deeper understanding of the oligodendroglia in both physiological and pathological *** this uniform terminology will facilitate comparison and integration of data across ***,including the consolidation of findings from various demyelinating models,is essential to better understand the pathogenesis of demyelinating ***,comparing injury models across species with varying regenerative capacities can provide insights that may lead to new therapeutic strategies to overcome remyelination ***,by standardizing terminology and synthesizing data from diverse studies across different animal models,we can enhance our understanding of myelin pathology in central nervous system disorders such as multiple sclerosis,Alzheimer's disease,and amyotrophic lateral sclerosis,all of which involve oligodendroglial and myelin dysfunction.

关键词： animal models demyelination fish mammals multiple sclerosis myelin neurodegeneration oligodendrocytes oligodendroglial lineage remyelination

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Assessing XEN microstent’s one-year efficacy:independent of site variability

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International Journal of Ophthalmology(English edition) 2025年第1期18卷 86-93页

作者： Caroline Bormann Catharina Busch Matus Rehak Christian Thomas Scharenberg Focke Ziemssen jan Darius Unterlauft Department of Ophthalmology University of LeipzigLiebigstrasse 10-14Leipzig 04103Germany Department of Ophthalmology University of InnsbruckAnichstraBe 35Innsbruck 6020Austria Smile Eyes Augen-und Laserzentrum Leipzig LampestraBe 1Leipzig 04107Germany Department of Ophthalmology InselspitalUniversity of BernFreiburgstrasse 4Bern 3010Switzerland

AIM:To evaluate the short-term efficacy of XEN45 Gel Stent(XEN)implantation for primary open angle glaucoma(POAG)and pseudoexfoliation(PEX)glaucoma across two university eye clinics,aiming to assess the impact of varying center-specific protocols during the first postoperative ***:We retrospectively examined 282 patients(183 in center 1,99 in center 2),who underwent XEN microstent implantation for uncontrolled POAG or PEX *** including intraocular pressure(IOP),IOP-lowering medication count,best corrected visual acuity(BCVA),and postoperative complications were evaluated over ***:Post-implantation,center 1 reported a mean IOP reduction from 25.3±7.4 to 14.1±4.7 mm Hg(P<0.01)and a decrease in IOP-lowering medications from 3.2±1.2 to 1.0±1.3(P<0.01).Center 2 observed a similar reduction from 24.4±6.5 to 15.1±5.5 mm Hg(P<0.01)and medication decrease from 3.0±1.1 to 1.2±1.0(P<0.01).BCVA remained stable in both *** most common complications were hypotony(center 1:32;center 2:20)and choroidal detachment(center 1:22,center 2:15),with nearly identical needling rates(40% in center 1,41% in center 2).CONCLUSION:XEN implantation yields consistent reductions in IOP and medication use across different centers using comparable surgical and postoperative treatment *** findings underscore XEN’s shortterm effectiveness and suggest standardizable outcomes regardless of exact surgical procedure or treatment differences.

关键词： glaucoma XEN45 Gel Stent minimally invasive glaucoma surgery

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Fabrication and fracture behaviors of the continuous brittle fiber reinforced tungsten composites fabricated via field-assisted sintering technology

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Tungsten 2025年第1期7卷 172-182页

作者： Rui Shu Yi-Ran Mao jan W. Coenen Alexis Terra Stephan Sch?nen Johann Riesch Christian Linsmeier Christoph Broeckmann Juelich Research Center Institute of Energy and Climate Research Plasma Physics (IEK-4) Partner in the Trilateral Euregio Cluster Institute of Materials Applications in Mechanical Engineering (IWM) RWTH Aachen University Department of Nuclear Engineering & Engineering Physics University of Wisconsin Madison Central Institute of Engineering Electronics and Analytics Engineering and Technology (ZEA-1) Juelich Research Center Max Planck Institute for Plasma Physics Institute of Materials Applications in Mechanical Engineering IWM RWTH Aachen University

Tungsten（W） is a promising candidate material for the plasma-facing components in future fusion ***,it has issues regarding the intrinsic brittleness as well as operational *** fiber reinforced tungsten（W_f/W） composites overcome these issues by using extrinsic toughening *** to neutron irradiation and high-temperature recrystallization during fusion operation,the ductility of the fibers may degrade over a long period of ***,it is necessary to investigate the fracture behavior of W_f/W composites with brittle *** the present work,the tungsten fibers were embrittled by ***,the continuous brittle W_f/W composite with yttrium oxide（Y2O3） interface was fabricated by the field-assisted sintering technology *** microstructure of the prepared W_f/W composites was *** fracture behavior and toughening mechanisms were discussed in detail based on the experimental results of 3-point bending tests and the corresponding finite element *** composites show a pseudo-ductile fracture *** are hindered and deflected by the de-bonded fiber-matrix *** extrinsic toughening mechanisms of interface de-bonding,crack bridging,and fiber pull-out are *** indicates the reinforcement concept still works even though all components in the W_f/W are brittle.

关键词： Field-assisted sintering technology (FAST) Fracture behavior Interface Numerical simulation Wf/W composites

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Impact of atmospheric turbulence on coherent beam combining for laser weapon systems

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Defence Technology（防务技术） 2021年第4期17卷 1160-1167页

作者： jan K.Jabczyński Przemysław Gontar Military University of Technology Gen.S.Kaliskiego 2Warsaw00-908Poland

The performance of a laser weapon system based on coherent beam combining(CBC)depends on its propagation properties in the *** this study,an analytical model based on partial coherent beam combining(PCBC)for assumed coherence coefficients between beams in a CBC lattice was *** Kolmogorov model of atmospheric turbulence and the Hufnagel-Valley model of C^(2)_(n) dependence on atmospheric parameters were *** simplified metrics were proposed to assess the CBC *** beam profiles(super-Gaussian,truncated Gaussian,etc.)and geometries were analyzed in terms of maximal intensity in the far *** approximate formula for PCBC efficiency dependent on the Fried radius was *** results of CBC modeling were compared to those of the Gaussian beam propagation model in a turbulent *** dependence of CBC performance on the C^(2)_(n) parameter,range,and elevation angle was *** could be concluded that the application of CBC for medium and long range propagation is impractical without an effective adaptive optics system.

关键词： Laser beams Beam combining Coherence Atmosphere turbulences

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Ghost species form an important component of the epiphytic lichens in temperate forests

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Forest Ecosystems 2025年第01期 20-28页

作者： jan Vondrák Ji?í Ko?nar Stanislav Svoboda Zdeněk Palice Jaroslav ?oun Ji?í Kubásek Pavel Ríha Ji?í Malí?ek jan Rydlo Jeňyk Hofmeister Institute of Botany of the Czech Academy of Sciences Department of Botany Faculty of ScienceUniversity of South Bohemia Museum of Dr.Bohuslav Horák in Rokycany Branch of Museum of West Bohemia Department of Experimental Plant Biology Faculty of ScienceUniversity of South Bohemia ReDpeupbalritcment of Forest Ecology Faculty of Forestry and Wood SciencesCzech University of Life Sciences in Prague Global Change Research Institute of the Czech Academy of Sciences

Sequencing of environmental samples has great potential for biodiversity research, but its application is limited by the lack of reliable DNA barcode databases for species identifications. Such a database has been created for epiphytic lichens of Europe, allowing us to compare the results of environmental sequencing with standard taxonomic surveys. The species undetected by taxonomic surveys(what we term the ghost component) amount to about half of the species actually present in hectare plots of Central European forests. Some of these, which currently occur only as diaspores or weakly developed thalli, are likely to be favoured in the course of global change. The ghost component usually represents a larger fraction in managed forests than in old-growth unmanaged forests. The total species composition of different plots is much more similar than suggested by taxonomic surveys alone. On a regional scale, this supports the well-known statement that“everything is everywhere,but, the environment selects”.

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Physico-chemical properties of 3-methoxy-2-nitrobenzoates of some rare earth elements(Ⅲ)

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Journal of Rare Earths 2012年第3期30卷 262-268页

作者： Wiesawa Ferenc Beata Cristóvao jan Sarzyński Halina Guchowska Faculty of Chemistry Maria Curie-Skodowska University Institute of Physics Maria Curie-Skodowska University

The complexes of 3-methoxy-2-nitrobenzoates of Pr（Ⅲ）, Nd（Ⅲ）, Sm（Ⅲ）, Eu（Ⅲ）, Gd（Ⅲ）, Tb（Ⅲ）, Er（Ⅲ） and Tm（Ⅲ） with the formula： Ln（C8H6NO5）3·2H2O, where Ln=lanthanides（Ⅲ）, were synthesized and characterized by elemental analysis, Forier transform irtrared （FTIR） spectroscopy, magnetic and thermogravimetric studies and also by X-ray diffraction （XRD） measurements. The complexes had col- ours typical for Ln（Ⅲ） ions. The carboxylate groups bound as bidentate chelating. On heating to 1173 K in air they decomposed in the same way, at first, dehydrated in one step to anhydrous salts, and then decomposed to the oxides of respective metals with intermediate formation of the oxycarbonates. The enthalpy values of the dehydration process changed from 133.72 to 44.50 kJ/mol. Their solubility in water at 293 K was of the order of 10-4 mol/dm3. The magnetic moments of analysed complexes were determined by Gouy＇s method in the range of 76-303 K.

关键词： 3-methoxy-2-nitrobenzoates thermal stability magnetic properties rare earths

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Path analysis and estimation of additive and epistatic gene effects of barley SSD lines

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Journal of Integrative Agriculture 2016年第9期15卷 1983-1990页

作者： jan Bocianowski Katarzyna Górczak Kamila Nowosad Wojciech Rybiński Dariusz Piesik Department of Mathematical and Statistical Methods Poznań University of Life Sciences Department of Genetics Plant Breeding and Seed Production Wroc?aw University of Environmental and Life Sciences Institute of Plant Genetics Polish Academy of Sciences Department of Entomology and Molecular Phytopathology UTP University of Science and Technology

In the paper presented, 99 single seed descent barley lines as well as their parental forms Roland and Apex were studied. The grain weight components and their interrelations were analyzed using simple coefficients of correlation. The direct and indirect effects of such components on grain weight per plant and 1 000-grain weight were estimated using path analysis. In the 2006 and 2007, the spike length and number of spikelets per spike were the determinants of grain weight. Genetic parameters as additive and epistasis effects were estimated for all studied traits. The results indicate the importance of both additive and epistasis gene effects of number of spikes per plant, grain weight per spike, grain number per plant and grain weight per plant in this study.

关键词： path analysis additive effect epistasis single seed descent(SSD) barley

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