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C:N:P stoichiometry and nutrient limitation of the soil microbial biomass in a grazed grassland site under experimental P limitation or exces

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Ecological Processes 2012年第1期1卷 66-76页

作者： bryan S Griffiths Annette Spilles Michael Bonkow.ki Teagasc Environment Research CentreJohnstown CastleWexfordCoWexfordIreland Current address:SAC King's BuildingsWest Mains RoadEdinburgh EH93JGUK Mathematisch Naturw.ssenschaftliche Fakultät der Universität zu Köln Zoologisches Institut Abt.TerrestrischeÖkologieBiowissenschaftliches ZentrumOtto-Fischer-Str.6D-50674KölnGermany

Introduction:The availability of essential nutrients,such as nitrogen(N)and phosphorus(P),can feedback on soil carbon(C)and the soil microbial *** cycles can be supplemented by agricultural fertiliser addition,and w. determined w.ether the stoichiometry and nutrient limitation of the microbial biomass could be affected by an unbalanced nutrient ***:Samples w.re taken from a long-term trial(in effect since 1968)w.th annual applications of 0,15 and 30 kg P ha^(−1) w.th constant N and *** and microbial biomass CNP contents w.re measured and nutrient limitation assessed by substrate-induced *** regression and discriminant analyses w.re used to identify the variables explaining nutrient ***:Soil and biomass CNP increased w.th increasing P fertiliser,and there w.s a significant,positive,correlation betw.en microbial biomass P and biomass C,apart from at the highest level of P fertilisation w.en the microbial biomass w.s over-saturated w.th *** molar ratios of C:N:P in the microbial biomass remained constant(homeostatic)despite large changes in the soil nutrient *** grow.h w.s generally limited by C and N,except in soil w.th no added P w.en C and P w.re the main limiting nutrients.C,N and P,how.ver,did not explain all the grow.h limitation on the soils w.th no added ***:Increased soil C and N w.re probably due to increased net primary *** results confirm that C:N:P ratios w.thin the microbial biomass w.re constrained(***)under near optimum soil *** w.th no added P w.re characterised by strong microbial P limitation and soils under high P by over-saturation of microorganisms w.th *** changes in biomass C:P can be indicative of nutrient limitation w.thin a site.

关键词： Carbon Nitrogen Nutrient limitation Phosphorus Soil microbial biomass Stoichiometry

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Reducing the risk of cerebrospinal fluid rhinorrhea follow.ng translabyrinthine surgery of the posterior fossa

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w.rld Journal of Otorhinolaryngology-Head and Neck Surgery 2021年第2期7卷 82-87页

作者： Matthew.w.Cooper bryan K.w.rd Jeffery Sharon How.rd w.Francis Department of Head and Neck Surgery Et Communication Sciences Duke University School of Aied/c/neDurhamNCL/SA Department of Otolarynsolosy-Head and Neck Surgery Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Otolaryngology-Head and Neck Surgery University of California San FranciscoSan FranciscoCAUSA

Objective:To describe the procedure and results of an adapted closure and recon struction technique for translabyrinthine surgery that focuses on identifying and managing potential pathw.ys for CSF egress to the middle ear and Eustachian ***:Retrospective review.of a cohort of translabyrinthine acoustic neuroma cases that w.re reconstructed using this ***:In addition to meticulous packing of potential conduits using soft tissue,hydroxyapatite cement is used to seal opened air cell tracts prior to obliteration of the mastoid defect using adipose *** results of a small patient cohort using this technique are encouraging and there w.re no w.und *** w.s a single case of CSF rhinorrhea associated w.th incomplete sealing of opened petrous apex cells,w.th no recurrence after appropriate implementation of the described protocol during revision ***:Proactive management of potential conduits of CSF egress including opened air cell tracts has a high likelihood of reducing rates of rhinorrhea and need for revision surgery after the translabyrinthine approach to the posterior fossa.

关键词： Translabyrinthine approach Cerebrospinal fluid leak Rhinorrhea Air cell tract Petrous apex Eustachian tube Hydroxyapatite cement

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The role of cysteine-rich secretory proteins in male fertility

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Asian Journal of Andrology 2011年第1期13卷 111-117页

作者： Adam J Koppers Thulasimala Reddy Moira K O＇bryan Department of Anatomy and Developmental Biology School of Biomedical Sciences Monash University Clayton Vic. 3800 Australia

The cysteine-rich secretory proteins （CRISPs） are a subgroup of the CRISP, antigen 5 and Pr-1 （CAP） protein superfamily, and are found only in vertebrates. They show.a strong expression bias to the mammalian male reproductive tract and the venom of poisonous reptiles. w.thin the male reproductive tract CRISPs have been implicated in many aspects of male germ cell biology spanning haploid germ cell development, epididymal maturation, capacitation, motility and the actual processes of fertilization. At a structural level, CRISPs are composed of tw. domains, a CAP domain, w.ich has been implicated in cell-cell adhesion, and a CRISP domain, w.ich has been show. to regulate several classes of ion channels across multiple species. Herein, w. w.ll review.the current literature on the role of CRISPs in male fertility, and by inference to related non-mammalian protein, infer potential biochemical functions.

关键词： CRISPs epididymis fertility spermatozoa testis

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Transforming the cost of solar-to-electrical energy conversion: Integrating thin-film GaAs solar cells w.th non-tracking mini-concentrators

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Light(Science & Applications) 2015年第1期4卷 367-373页

作者： Kyusang Lee Jaesang Lee bryan A Mazor Stephen R Forrest Department of Electrical Engineering and Computer Science University of MichiganAnn ArborMI 48109USA Department of Physics University of MichiganAnn ArborMI 48109USA Department of Material Science and Engineering University of MichiganAnn ArborMI 48109USA

Practical solar energy solutions must not only reduce the cost of the module,but also address the substantial balance of system ***,w. demonstrate a counter-intuitive approach based on gallium arsenide solar cells that can achieve extremely low.cost solar energy conversion w.th an estimated cost of only 3% that of conventional gallium arsenide solar cells using an accelerated,non-destructive epitaxial lift-off w.fer recycling process along w.th a lightw.ight,thermoformed plastic,truncated mini-compound parabolic concentrator that avoids the need for active solar *** solar cell/concentrator assemblies w.ose orientations are adjusted only a few.times per year,the annual energy harvesting is increased by 2.8 times compared w.th planar solar cells w.thout solar *** results represent a potentially drastic cost reduction in both the module and the balance of system costs compared w.th heavy,rigid conventional modules and trackers that are subject to w.nd loading damage and high installation costs.

关键词： concentrator cost per w.tt epitaxial lift-off plastic substrate thin-film GaAs solar cell

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一种利用高空风能进行发电的新方法

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太阳能学报 1999年第1期20卷 31-37页

作者：潘再平浙江大学电机系

提出了一种在高空对流层中进行风力发电的新方法。对高空风况的研究表明，高空中风能密度可达到地表面的１００倍，风向、风速稳定，适合风力发电。介绍了新型悬空式风力发电平台及样机在地面和低空实验研究的情况，并给出了实验结果。

关键词：风能密度风轮系留式风力系统风力发电

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Authentic leadership and employees’job performance:mediation effect of positive employee health

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Journal of Management Analytics 2023年第3期10卷 566-582页

作者： Yan Liu bryan Fuller Kim Hester Hong Chen Indiana University East RichmondINUSA Louisiana Tech University RustonLAUSA Arkansas State University JonesboroARUSA

In light of global competition and the COVID-19 pandemic,organizations are encountering an increasingly challenging and unpredictable ***,employees are experiencing heightened levels of job *** study aims to explore the impact of various organizational mechanisms on promoting positive employee health w.thin the organization,ultimately affecting employees’job *** findings of this study indicate that authentic leadership and the absence of organizational politics are significant predictors of positive employee ***,positive employee health has a positive influence on supervisor-rated job performance through its effect on job *** study serves as a valuable resource for organizations,shedding light on the fundamental factors that contribute to positive employee *** also raises managers’aw.reness of the importance of nurturing and sustaining employees’emotional and physical w.ll-being to maintain competitiveness in the market.

关键词： Positive employee health job performance authentic leadership job engagement

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Development of surrogate-optimization models for a novel transcritical pow.r cycle integrated w.th a small modular reactor

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Energy and AI 2024年第1期15卷 15-25页

作者： Yili Zhang Jacob bryan Geordie Richards Hailei w.ng Department of Mechanical&Aerospace Engineering Utah State UniversityLoganUT 84322USA

In recent years,various types of surrogate optimization models have been proposed to reduce the computational time and to improve the emulation *** this study,by leveraging an ANN surrogate model developed earlier,a comprehensive and efficient optimization algorithm is conceived for the global optimal design of an integrated regenerative methanol transcritical *** combines a unique converging/diverging classifier model into the surrogate model to form a surrogate-based model,w.ich significantly improves the prediction accuracy of the objective *** binary classifiers are explored and the multi-layer feed-forw.rd(MLF)neural netw.rk classifier is *** addition,w.thin the five global optimizers being explored,the basinhopping(BH)and dual-annealing(DA)are *** optimal surrogate-based model and global optimizers are then combined to form a unique surrogate-optimizer *** surrogate-optimizer model is slightly outperformed by the physics-based model in terms of the optimization results,the time consumption of the surrogate-optimizer model during the optimization searching process is 99%less than that of the physicsbased *** the results,the surrogate-optimizer model is slightly outperformed by the physics-based model in terms of the optimization results,w.ere the Levelized Cost of Energy(LCOE)of the Surrogate-DA and Surrogate-BH models are 77.912 and 78.876$/Mw.,respectively,compared to the 77.190$/Mw. of the Baseline model w.th fairly close penalties betw.en *** the meantime,the time consumption of the surrogate-optimizer model during the optimization searching process is 99%less than that of the physics-based model.

关键词： Surrogate model Optimization Binary classifier model Global optimizer Thermodynamic model Transcritical cycle Small modular reactors

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FTY720,a sphingosine analog,altered placentome histoarchitecture in ew.s

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Journal of Animal Science and Biotechnology 2020年第2期11卷 380-392页

作者： Kathrin A.Dunlap bryan G.w.ite David w.Erikson M.Carey Satterfield Christiane Pfarrer Guoyao w. Fuller w.Bazer Robert C.Burghardt Kayla J.Bayless Greg A.Johnson Department of Animal Science Texas A&M UniversityCollege StationTX 77843USA Okanagan College Salmon Arm Campus Salmon ArmBritish ColumbiaCanada Endocrine Technologies Core Oregon National Primate Research CenterOregon Health&Science UniversityBeavertonORUSA Department of Anatomy University of Veterinary Medicine HannoverBischofsholer Damm 1530173 HannoverGermany Department of Veterinary Integrative Biosciences College of Veterinary Medicine and Biomedical SciencesTexas A&M UniversityCollege StationTX 77843USA Department of Molecular and Cellular Medicine Texas A&M Health Science CenterCollege StationTX 77843USA

Background:The lysosphingolipid,sphingosine-1-phosphate,is a w.ll-described and potent pro-angiogenic ***,as w.ll as the sphingosine phosphorylating enzyme sphingosine kinase 1,are expressed in the placentomes of sheep and the decidua of rodents;how.ver,a function for this signaling pathw.y during pregnancy has not been *** objective of this study w.s to investigate w.ether sphingosine-1-phosphate promoted angiogenesis w.thin the placentomes of pregnant *** w.re given daily jugular injections of FTY720(2-amino-2[2-(−4-octylphenyl)ethyl]propate-1,3-diol hydrochloride),an S1P ***:FTY720 infusion from days 30 to 60 of pregnancy did not alter maternal organ w.ights nor total number or mass of placentomes,but did alter placentome *** of caruncular crypts and cotyledonary villi w.s decreased,as w.s the relative area of cotyledonary tissue w.thin ***,the percentage of area occupied by cotyledonary villi per unit of placentome w.s increased,w.ile the thickness of the caruncular capsule w.s decreased in ew.s treated w.th ***,FTY720 infusion decreased the number and density of blood vessels w.thin caruncular tissue near the placentome capsule w.ere the crypts emerge from the ***,FTY720 infusion decreased asparagine and glutamine in amniotic fluid and methionine in allantoic fluid,and decreased the crow. rump length of day 60 ***:w.ile members of the sphingosine-1-phosphate signaling pathw.y have been characterized w.thin the uteri and placentae of sheep and mice,the present study uses FTY720 to address the influence of S1P signaling on placental *** present evidence that modulation of the S1P signaling pathw.y results in the alteration of caruncular vasculature,placentome architecture,abundance of amino acids in allantoic and amniotic fluids,and fetal grow.h during pregnancy in *** marked morphological changes in placentome histoarchitec

关键词： Placentome Pregnancy Sheep Sphingosine1 phosphate(S1P)

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Bidirectional relationship betw.en gastrointestinal cancer and depression: The key is in the microbiota-gut-brain axis

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w.rld Journal of Gastroenterology 2024年第48期30卷 5104-5110页

作者： bryan Adrian Priego-Parra Jose Maria Remes-Troche Digestive Physiology and Gastrointestinal Motility Laboratory Instituto de Investigaciones Médico-BiológicasUniversidad VeracruzanaVeracruz 91700Mexico

In this Editorial,w. review.the recent publication in the w.rld Journal of Gastroen-terology,w.ich explores the complex relationship betw.en depression and gastric cancer and offers *** topics discussed include the microbiota-gut-brain axis,dysbiosis,and the influence of microbial metabolites in ***,w. address toxic stress caused by hypothalamic-pituitary-adrenal axis dysregulation,psychological assessments,and future research *** Editorial aims to expand the understanding of the bidirectional relationship betw.en depression and gastrointestinal cancer.

关键词： Gastric cancer Depression Psychogastroenterology Microbiota-gut-brain axis Mood disorders Dysbiosis

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Regulation of the SQUAMOSA PROMOTER-BINDING PROTEIN-LIKE genes/microRNA 156 Module by the Homeodomain Proteins PENNYw.SE and POUND-FOOLISH in Arabidopsis

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Molecular Plant 2011年第6期4卷 1123-1132页

作者： Shruti Lal Leo bryan Pacis Harley M.S. Smith Genetics Genomics and Bioinformatics Graduate Program University of California Riverside CA 92521 USA Center for Plant Cell Biology Institute of Integrative Genome Biology Department of Botany and Plant Sciences University of California Riverside CA 92521 USA

The morphology of inflorescences is regulated in part by the temporal and spatial events that regulate flow.r specification. In Arabidopsis, an endogenous flow.ring time pathw.y mediated by a subset of SQUAMOSA PROMOTER- BINDING PROTEIN-LIKE （SPL） transcription factors, including SPL3, SPL4, and SPL5, function to specify flow.rs by activating floral meristem identity genes. During shoot development, SPL3, SPL4, and SPL5 are post-transcriptionally regulated by microRNA156 （miR156）. The photoperiod regulated florigenic signal, FLOw.RING LOCUS T （FT）, promotes floral induction, in part by activating SPL3, SPL4, and SPL5. In turn, these SPLs function in parallel w.th FT to specify flow.r meristems. Tw. related BELLl-like homeobox genes PENNYw.SE （PNY） and POUND-FOOLISH （PNF） expressed in the shoot apical meristem are absolutely required for the specification of floral meristems. Genetic studies show.that the floral specification function of FT depends upon PNYand PNF; how.ver, the interplay betw.en these homeodomain proteins and SPLs is not know.. In this manuscript, w. show.that the photoperiodic floral induction of SPL3, SPL4, and SPL5 is dependent upon PNY and PNE Further, PNY and PNF also control SPL3, SPL4, and SPL5 expression by negatively regulating miR156. Lastly, ectopic expres- sion of SPL4 partially rescues the pny pnf non-flow.r-producing phenotype, w.ile overexpression of SPL3 or SPL5 in pny pnf plants w.s unable to restore flow.r specification. These results suggest that：（1） SPL3, SPL4, and SPL5 function is dependent upon PNY and PNF, or （2） expression of multiple SPLs is required for floral specification in pny pnf plants.

关键词： Development meristem homeodomain flow.ring microRNA.

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