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Effects of live yeast on differential genetic and functional attributes of rumen microbiota in beef cattle

Journal of Animal Science and Biotechnology 2019年第4期10卷 1101-1107页

作者： Ibukun M.Ogunade Jerusha Lay kenneth andries Christina J.Mc Manus Frederick Bebe College of Agriculture Communities and the Environment Kentucky State University

Several studies have evaluated the effects of live yeast supplementation on rumen microbial population;however,its effect on differential microbial genes and their functional potential has not been described. Thus, this study applied shotgun metagenomic sequencing to evaluate the effects of live yeast supplementation on genetic and functional potential of the rumen microbiota in beef cattle. Eight rumen-cannulated Holstein steers were randomly assigned to two treatments in a cross-over design with two 25-day experimental periods and a 10-day wash-out between the two periods. The steers were housed in individual pens and fed 50% concentrate-mix and 50% red clover/orchard hay ad libitum. Treatments were(1) control(CON;basal diet without additive) and(2) yeast(YEA;basal diet plus 15 g/d of live yeast product). Rumen fluid samples were collected at 3, 6, and 9 h after feeding on the last d of each period. Sequencing was done on an Illumina Hi Seq 2500 platform. Dietary yeast supplementation increased the relative abundance of carbohydrate-fermenting bacteria(such as Ruminococcus albus, ***, R. bromii, and R. obeum) and lactate-utilizing bacteria(such as Megasphaera elsdenii, Desulfovibrio desulfuricans, and D. vulgaris). A total of 154 differentially abundant genes(DEGs) were obtained(false discovery rate < 0.01). Kyoto Encyclopedia of Genes and Genomes(KEGG) annotation analysis of the DEGs revealed that 10 pathways, including amino sugar and nucleotide sugar metabolism, oxidative phosphorylation, lipopolysaccharide biosynthesis, pantothenate and coenzyme A biosynthesis, glutathione metabolism, beta-alanine metabolism,polyketide sugar unit biosynthesis, protein export, ribosome, and bacterial secretory system, were enriched in steers fed YEA. Annotation analysis of the DEGs in the carbohydrate-active enzymes(CAZy) database revealed that the abundance of genes coding for enzymes belonging to glycoside hydrolases, glycosyltransferases, and carbohydrate bindi

关键词： Functional potential Live yeast Rumen

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A new route towards polarized luminescence:0D/2D nanocomposites

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Light(Science & Applications) 2024年第2期13卷 175-177页

作者： andries Meijerink Debye Institute for Nanomaterials Science Department of ChemistryUtrecht UniversityPrincetonplein 13584CCUtrechtThe Netherlands School of Materials and Energy Lanzhou UniversityLanzhouGansuChina

Combining wide bandgap 2D inorganic materials and blue-light-emitting 0D carbon dots in 0D/2D heterojunction nanocomposites was shown to give rise to unique optical properties and a multifunctional prototype device wa... 详细信息

关键词： polarized luminescence nanocomposites

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Ultrabright near-infrared light

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Light(Science & Applications) 2024年第4期13卷 609-609页

作者： andries Meijerink Debye Institute for Nanomaterials Science Utrecht UniversityPrincetonplein 13584 CC UtrechtThe Netherlands

Nature Photonics(2024)https://***/10.1038/s41566-024-01400-7 The recent race for bright and broadband near-infrared(NIR)light sources has focused on new luminescent materials(phosphors)for efficient conversion of blue light emitting diode(LED)emission to broadband *** extreme brightness,blue laser diodes(LDs)are superior to LEDs as they maintain efficiency at high current ***,so far NIR phosphors suffered from severe efficiency droop at these high pumping *** team of Zhiguo Xia from South China University of Technology reported a record high 6 Watt NIR output from LDpumped MgO:Cr^(3+)translucent ceramics emitting around 810 ***,MgO:Cr^(3+)is an old phosphor,extensively studied in the past *** success is based in spark plasma sintering of translucent MgO:Cr^(3+)ceramics using nanosilica as flux,incorporated at grain *** refractive index contrast between MgO and SiO2 induces scattering of blue light,increasing light absorption,and the dense ceramic has excellent thermal conductivity,reducing thermal quenching of NIR *** new scheme using NIR-emitting translucent ceramics for laser-driven NIR light sources will propel photonics applications in night vision,biomedical imaging and sensing.

关键词： ceramics ceramic maintain

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Emerging substance class with narrow-band blue/green-emitting rare earth phosphors for backlight display application

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Science China Materials 2019年第1期62卷 146-148页

作者： andries Meijerink Condensed Matter and Interfaces Debye Institute for Nanomaterials Science Utrecht University

Solid state lighting (SSL)on the basis of phosphorconverted white light-emitting diodes (pc-wLEDs)is rapidly changing the lighting and display *** materials and concepts provide light sources and systems that have unmatched performance and/or functionality [1,2].In addition to the well-known application of pcwLEDs in home and office lighting,these efficient white light sources are also increasingly applied as alternative backlight units in liquid-crystal displays (LCDs),where there is a strong focus on improving resolution,wider color gamut,and decreased power consumption [3].

关键词： Emerging substance class narrow-band blue

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赛峰集团:全力以赴支持C919产能爬坡——专访赛峰集团首席执行官安德斯

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大飞机 2024年第3期 11-14页

作者：欧阳亮安德斯不详赛峰集团

疫情三年,航空产业链企业受到了不同程度的冲击,有些公司不得不收缩业务规模甚至裁员来降低成本,但疫情结束后,面对迅速恢复的市场,已经降低的产能一时却难以提升。在此背景下,2023年,赛峰集团以其灵活性获得了良好的业绩。赛峰集团战... 详细信息

疫情三年,航空产业链企业受到了不同程度的冲击,有些公司不得不收缩业务规模甚至裁员来降低成本,但疫情结束后,面对迅速恢复的市场,已经降低的产能一时却难以提升。在此背景下,2023年,赛峰集团以其灵活性获得了良好的业绩。赛峰集团战胜市场的秘诀是什么?2024年,C919飞机将全面转入量产阶段,赛峰集团对确保C919相关工作包有何规划?

关键词：首席执行官航空产业链降低成本集团产能爬坡全力以赴

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Parametric study of spark plasma sintering of Al_(20)Cr_(20)Fe_(25)Ni_(25)Mn_(10) high entropy alloy with improved microhardness and corrosion

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International Journal of Minerals,Metallurgy and Materials 2022年第1期29卷 119-127页

作者： andries Mthisi Nicholus Malatji A.Patricia I.Popoola L.Rudolf Kanyane Department of Chemical Metallurgical and Materials EngineeringTshwane University of TechnologyP.M.B.X680PretoriaSouth Africa

Multicomponent Al_(20)Cr_(20)Fe_(25)Ni_(25)Mn_(10) alloys were synthesized using spark plasma sintering at different temperatures(800,900,and 1000℃)and holding times(4,8,and 12 min)to develop a high entropy alloy(HEA).The characteristics of spark plasma-synthesized(SPSed)alloys were experimentally explored through investigation of microstructures,microhardness,and corrosion using scanning electron microscopy coupled with energy dispersive spectroscopy(EDS),Vickers microhardness tester,and potentiodynamic polarization,*** diffraction(XRD)characterization was employed to identify the phases formed on the developed *** EDS results revealed that the alloys consisted of elements selected in this work irrespective of varying sintering *** XRD,EDS,and scanning electron microscopy collectively provided evidence that the fabricated alloys were characterized by globular microstructures exhibiting face-centered cubic phase,which was formed on a basis of solid solution *** finding implies that the SPSed alloy showed the features of *** alloy produced at 1000℃ and holding time of 12 min portrayed an optimal microhardness of HV 447.97,but the value decreased to HV 329.47 after heat *** same alloy showed an outstanding corrosion resistance *** increase in temperature resulted in an Al_(20)Cr_(20)Fe_(25)Ni_(25)Mn_(10) alloy with superior density,microhardness,and corrosion resistance over the other alloys developed at different parameters.

关键词： high entropy alloy spark plasma sintering microhardness corrosion

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Understanding and tuning blue-to-near-infrared photon cutting by the Tm^(3+)/Yb^(3+) couple

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Light(Science & Applications) 2020年第1期9卷 992-1000页

作者： Dechao Yu Ting Yu Arnoldus Jvan Bunningen Qinyuan Zhang andries Meijerink Freddy T.Rabouw Debye Institute for Nanomaterials Science Utrecht UniversityPrincetonplein 13584 CC UtrechtThe Netherlands State Key Laboratory of Luminescence Materials and Devices Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhou 510641China

Lanthanide-based photon-cutting phosphors absorb high-energy photons and‘cut’them into multiple smaller excitation *** quanta are subsequently emitted,resulting in photon-conversion efficiencies exceeding *** photon-cutting process relies on energy transfer between optically active lanthanide ions doped in the ***,it is not always easy to determine,let alone predict,which energy-transfer mechanisms are operative in a particular *** makes the identification and design of new promising photon-cutting phosphors *** we unravel the possibility of using the Tm^(3+)/Yb^(3+) lanthanide couple for photon *** compare the performance of this couple in four different host *** energy transfer from Tm^(3+)to Yb^(3+) would enable blue-to-near-infrared conversion with 200% ***,we identify phonon-assisted cross-relaxation as the dominant Tm^(3+)-to-Yb^(3+) energy-transfer mechanism in YBO_(3),YAG,and Y_(2)O_(3).In NaYF_(4),in contrast,the low maximum phonon energy renders phonon-assisted cross-relaxation impossible,making the desired cooperative mechanism the dominant energy-transfer *** work demonstrates that previous claims of high photon-cutting efficiencies obtained with the Tm^(3+)/Yb^(3+) couple must be interpreted with ***,the Tm^(3+)/Yb^(3+) couple is potentially promising,but the host material-more specifically,its maximum phonon energy-has a critical effect on the energy-transfer mechanisms and thereby on the photon-cutting performance.

关键词： couple phonon lanthanide

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Multi-photon quantum cutting in Gd_(2)O_(2)S:Tm^(3+) to enhance the photo-response of solar cells

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Light(Science & Applications) 2015年第1期4卷 144-151页

作者： De-Chao Yu Rosa Martin-Rodriguez Qin-Yuan Zhang andries Meijerink Freddy T Rabouw State Key Laboratory of Luminescence Materials and Devices and Institute of Optical Communication Materials South China University of TechnologyGuangzhou 510641China Debye Institute for Nanomaterials Science Utrecht UniversityP.O.Box 800003508 TA Utrechtthe Netherlands

Conventional photoluminescence(PL)yields at most one emitted photon for each absorption ***(or quantum cutting)materials can yield more than one photon by virtue of energy transfer processes between luminescent *** this work,we introduce Gd2O2S:Tm^(3+) as a multi-photon quantum *** can convert near-infrared,visible,or ultraviolet photons into two,three,or four infrared photons of,1800 nm,*** cross-relaxation steps between Tm^(3+) ions that lead to quantum cutting are identified from(time-resolved)PL as a function of the Tm^(3+) concentration in the crystal.A model is presented that reproduces the way in which the Tm^(3+) concentration affects both the relative intensities of the various emission lines and the excited state dynamics and providing insight in the quantum cutting ***,we discuss the potential application of Gd2O2S:Tm^(3+) for spectral conversion to improve the efficiency of next-generation photovoltaics.

关键词： downconversion infrared emission quantum cutting solar cells spectral conversions

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Kinetics study on biomass pyrolysis for fuel gas production

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Journal of Zhejiang University Science 2003年第4期4卷 441-447页

作者：陈冠益方梦祥 andries，J. 骆仲泱 SPLIETHOFF,H. 岑可法 SectionofThermalPowerEngineering DepartmentofMechanicalEngineeringandMarineTechnologyDelftUniversityofTechnologytheNetherlands CleanEnergyandEnvironmentEngineeringKeyLabofMOE InstituteforThermalPowerEngineeringZhejiangUniversityHangzhou310027China

Kinetic knowledge is of great importance in achieving good control of the pyrolysis and gasification process and optimising system design. An overall kinetic pyrolysis scheme is therefore addressed here. The ki-netic modelling incorporates the following basic steps: the degradation of the virgin biomass materials into pri-mary products ( tar, gas and semi-char), the decomposition of primary tar into secondary products and the continuous interaction between primary gas and char. The last step is disregarded completely by models in the literature. Analysis and comparison of predicted results from different kinetic schemes and experimental data on our fixed bed pyrolyser yielded very positive evidence to support our kinetic scheme.

关键词： Biomass Pyrolysis Kinetic study Gas production

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From Prototype to Inference:A Pipeline to Apply Deep Learning in Sorghum Panicle Detection

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Plant Phenomics 2023年第1期5卷 94-109页

作者： Chrisbin James Yanyang Gu andries Potgieter Etienne David Simon Madec Wei Guo Frédéric Baret Anders Eriksson Scott Chapman School of Agriculture and Food Sciences The University of QueenslandBrisbaneAustralia School of Information Technology and Electrical Engineering The University of QueenslandBrisbaneAustralia Queensland Alliance for Agriculture and Food Innovation The University of QueenslandBrisbaneAustralia Arvalis Institut du VégétalParisFrance Graduate School of Agricultural and Life Sciences The University of TokyoTokyoJapan Institut National de la Recherche Agronomique ParisFrance

Head(panicle)density is a major component in understanding crop yield,especially in crops that produce variable numbers of tillers such as sorghum and *** of panicle density both in plant breeding and in the agronomy scouting of commercial crops typically relies on manual counts observation,which is an inefficient and tedious *** of the easy availability of red–green–blue images,machine learning approaches have been applied to replacing manual ***,much of this research focuses on detection per se in limited testing conditions and does not provide a general protocol to utilize deep-learning-based *** this paper,we provide a comprehensive pipeline from data collection to model deployment in deep-learning-assisted panicle yield estimation for *** pipeline provides a basis from data collection and model training,to model validation and model deployment in commercial *** model training is the foundation of the ***,in natural environments,the deployment dataset is frequently different from the training data(domain shift)causing the model to fail,so a robust model is essential to build a reliable *** we demonstrate our pipeline in a sorghum field,the pipeline can be generalized to other grain *** pipeline provides a high-resolution head density map that can be utilized for diagnosis of agronomic variability within a field,in a pipeline built without commercial software.

关键词： crops breeding utilize

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