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Post-Planting f.rtilization as a Ref.restation Aid on a Sulf.rous, Semiarid Surf.ce Mine

Natural Resources 2013年第2期4卷 209-219页

作者： roger f. walker Department of.Natural Resources and Environmental Science University of Nevada Reno USA

Selected f.rtilizer f.rmulations were assessed f.r their capacity to enhance growth and nutrition of.Jef.rey pine (Pinus jef.reyi Grev. & Balf.) seedlings on an acidic and possibly toxic Sierran surf.ce mine when applied three years af.er planting. In a study encompassing f.ve growing seasons conducted on a semiarid, montane surf.ce mine site on the eastern slope of.the Sierra Nevada, seedling survival, dimensions, and volume measurements were coupled with f.liar and soil analyses f.r macronutrients, micronutrients, and potentially phytotoxic metallic elements. Administered by broadcasting at f.ur rates each, the f.rmulations consisted of.an organic amendment derived f.om municipal biosolids;a controlled release f.rtilizer containing urea, ammoniacal, and nitrate N sources;and two conventional f.rtilizers with one f.aturing urea as the predominant N f.rm while the other delivered ammoniacal and nitrate f.rms. None of.the f.rmulations induced seedling mortality regardless of.application rate, but the controlled release f.rtilizer and the conventional urea-based f.rmulation were the most stimulatory overall, with intermediate rates of.both proving most advantageous among those tested. f.liar analysis revealed that enhanced N and P nutrition, which was otherwise severely impacted by soil inf.rtility, possibly along with that of.K, probably accounted f.r most of.the growth stimulation by the amendments, but an accessory role may have been attributable to reduced concentrations of.potentially phytotoxic metallic elements, principally Mn but possibly including f., Cu, and Al, f.r which soil levels were all exceedingly elevated. With caref.l selection of.f.rmulation and application rate, post-planting broadcast f.rtilization can enhance growth and nutrition of.Jef.rey pine on degraded substrates. These results provide a more complete understanding of.the benef.ts that judicious f.rtilization can impart to young f.rest stands on surf.ce mines and other harsh sites.

关键词： Ref.restation f.rest Restoration Mine Reclamation f.rest f.rtilization f.rest Nutrition Soil Toxicity Jef.rey Pine Pinus jef.reyi

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f.nctions of.nuclear f.ctor Y in nervous system development,f.nction and health

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Neural Regeneration Research 2025年第10期20卷 2887-2894页

作者： Pedro Moreira roger Pocock Development and Stem Cells Program Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental BiologyMonash UniversityMelbourneVICAustralia

Nuclear f.ctor Y is a ubiquitous heterotrimeric transcription f.ctor complex conserved across eukaryotes that binds to CCAAT boxes,one of.the most common motif. f.und in gene promoters and *** the last 30 years,research has revealed that the nuclear f.ctor Y complex controls many aspects of.brain development,including dif.erentiation,axon guidance,homeostasis,disease,and most recently ***,a complete understanding of.transcriptional regulatory networks,including how the nuclear f.ctor Y complex binds to specif.c CCAAT boxes to perf.rm its f.nction remains *** this review,we explore the nuclear f.ctor Y complex’s role and mode of.action during brain development,as well as how genomic technologies may expand understanding of.this key regulator of.gene expression.

关键词： axon guidance CCAAT boxes neuronal degeneration neuronal dif.erentiation neuronal regeneration nuclear f.ctor Y complex transcription f.ctor transcriptional regulation

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f.rmation and Microstructural Characterization of.Silicon-modif.ed Aluminide Coating on Nickel-based Superalloy IN738LC

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材料热处理学报 2004年第05B期25卷 657-660页

作者： f. Shahriari f. Ashraf.zadeh A. Monshi Materials engineering department Isfahan University of Technology Isfahan IranMaterials engineering department Isfahan University of Technology Isfahan IranMaterials engineering department Isfahan University of Technology Isfahan Iran

In this investigation, aluminide coatings used to protect industrial components at high temperature and corrosive environments were modif.ed with silicon addition and the microstructural f.atures and f.rmation mechanism were evaluated. The coating on the nickel-based superalloy IN738LC was carried out by a two stage process including siliconizing at f.rst and aluminizing thereaf.er. Pack cementation siliconizing perf.rmed at 950C f.r 2, 4 and 6 hours in several powder mixtures of.Si, A12O3 and NHiCl, then aluminum was dif.used into the surf.ce of.the specimens by an industrial aluminizing process. The modif.ed coatings were characterized by means of.standard metallography, scanning electron microscopy, energy dispersive spectroscopy and X-ray dif.raction methods. The results show that Si in the coatings mainly presents in the f.rm of.secondary phases including Cr3Si, Mo5Si3 and Nii6Ti6Si7, well distributed within the NiAl matrix. The advantages of.this two stage modif.ed coating is discussed.

关键词：显微结构 IN738LC 镍超级合金扩散渗碳处理生长机制

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Closed-f.rm solutions f.r f.ee vibration of.rectangular f.M thin plates resting on elastic f.undation

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Acta Mechanica Sinica 2016年第6期32卷 1088-1103页

作者： T. f. Xu Y. f. Xing Institute of.Solid Mechanics Beihang UniversityBeijing 100191 China China Academy of.Launch Vehicle Technology R&D Center Beijing 100076 China

This article presents closed-f.rm solutions f.r the f.equency analysis of.rectangular f.nctionally graded material (f.M) thin plates subjected to initially in-plane loads and with an elastic f.undation. Based on classical thin plate theory, the governing dif.erential equations are derived using Hamilton's principle. A neutral surf.ce is used to eliminate stretching-bending coupling in f.M plates on the basis of.the assumption of.constant Poisson's ratio. The resulting governing equation of.f.M thin plates has the same f.rm as homogeneous thin plates. The separation-of.variables method is adopted to obtain solutions f.r the f.ee vibration problems of.rectangular f.M thin plates with separable boundary conditions, including, f.r example, clamped plates. The obtained normal modes and f.equencies are in elegant closed f.rms, and present f.rmulations and solutions are validated by comparing present results with those in the literature and f.nite element method results obtained by the authors. A parameter study reveals the ef.ects of.the power law index n and aspect ratio a/b on f.equencies.

关键词： f.nctionally graded material f.ee vibration Rectangular plate Close f.rm solutions Neutral surf.ce

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Electricity Tarif. Aware Model Predictive Controller f.r Customer Battery Storage with Uncertain Daily Cycling Load

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Journal of.Modern Power Systems and Clean Energy 2022年第1期10卷 140-148页

作者： Dejan P.Jovanović Gerard f.Ledwich Geof.rey R.walker Institute of.Electrical and Electronic Engineers QueenslandAustralia School of.Electrical Engineering and Robotics Queensland University of TechnologyBrisbaneAustralia

To optimally control the energy storage system of.the battery exposed to the volatile daily cycling load and electricity tarif.s,a novel modif.cation of.a conventional model predictive control is *** uncertainty of.daily cycling load prompts the need to design a new cost f.nction which is able to quantif. the associated *** modelling a probabilistic dependence among f.ow,load,and electricity tarif.s,the expected cost f.nction is obtained and used in the constrained *** proposed control strategy explicitly incorporates the cycling nature of.customer ***,f.r daily cycling load,a f.xed-end time and a f.xed-end output problem are *** is demonstrated that the proposed control strategy is a convex optimization *** stochastic and robust model predictive controllers evaluate the cost concerning model constraints and parameter ***,the expected cost across the f.ow variations is *** density f.nction of.load probability improves load prediction over a progressive prediction horizon,and a nonlinear battery model is utilized.

关键词： Residential energy systems battery storage model predictive control nonlinear optimization cost of.daily electricity consumption

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Nanoscale displacement of.the image of.an atomic source of.radiation

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Chinese Optics Letters 2009年第2期7卷 149-151页

作者： Henk f. Arnoldus Department of.Physics and Astronomy Mississippi State University

Light emitted by an atomic source of.radiation appears to travel along a straight line （ray） f.om the location of.the source to the observer in the f.r f.eld. However, when the energy f.ow pattern of.the radiation is resolved with an accuracy better than an optical wavelength, it turns out that the f.eld lines are usually curved. We consider electric dipole radiation, a prime example of.which is the radiation emitted by an atom during an electronic transition, and we show that the f.eld lines of.energy f.ow are in general curves. Near the location of.the dipole, the f.eld lines exhibit a vortex structure, and in the f.r f.eld they approach a straight line. The spatial extension of.the vortex in the optical near f.eld is of.nanoscale dimension. Due to the rotation of.the f.eld lines near the source, the asymptotic limit of.a f.eld line is not exactly in the radially outward direction and as a consequence, the image in the f.r f.eld is slightly shif.ed. This sub-wavelength displacement of.the image of.the source should be amenable to experimental observation with contemporary nanoscale-precision techniques.

关键词： Atoms Electric dipole moments f.ow patterns Nanotechnology Vortex f.ow

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Chondroitinase ABC combined with Schwann cell transplantation enhances restoration of.neural connection and f.nctional recovery f.llowing acute and chronic spinal cord injury

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Neural Regeneration Research 2025年第5期20卷 1467-1482页

作者： Wenrui Qu Xiangbing Wu Wei Wu Ying Wang Yan Sun Lingxiao Deng Melissa walker Chen Chen Heqiao Dai Qi Han Ying Ding Yongzhi Xia George Smith Rui Li Nai-Kui Liu Xiao-Ming Xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteDepartment of Neurological SurgeryIndiana University School of MedicineIndianapolisINUSA Department of.Hand Surgery the Second Hospital of Jilin UniversityChangchunJilin ProvinceChina Shriners Hospitals Pediatric Research Center Temple University School of MedicinePhiladelphiaPAUSA Department of.Anatomy&Cell Biology Indiana University School of MedicineIndianapolisINUSA

Schwann cell transplantation is considered one of.the most promising cell-based therapy to repair injured spinal cord due to its unique growth-promoting and myelin-f.rming properties.A the f.od and Drug Administration-approved Phase I clinical trial has been conducted to evaluate the saf.ty of.transplanted human autologous Schwann cells to treat patients with spinal cord injury.A major challenge f.r Schwann cell transplantation is that graf.ed Schwann cells are conf.ned within the lesion cavity,and they do not migrate into the host environment due to the inhibitory barrier f.rmed by injury-induced glial scar,thus limiting axonal reentry into the host spinal *** we introduce a combinatorial strategy by suppressing the inhibitory extracellular environment with injection of.lentivirus-mediated transf.ction of.chondroitinase ABC gene at the rostral and caudal borders of.the lesion site and simultaneously leveraging the repair capacity of.transplanted Schwann cells in adult rats f.llowing a mid-thoracic contusive spinal cord *** report that when the glial scar was degraded by chondroitinase ABC at the rostral and caudal lesion borders,Schwann cells migrated f.r considerable distances in both rostral and caudal *** Schwann cell migration led to enhanced axonal regrowth,including the serotonergic and dopaminergic axons originating f.om supraspinal regions,and promoted recovery of.locomotor and urinary bladder ***,the Schwann cell survival and axonal regrowth persisted up to 6 months af.er the injury,even when treatment was delayed f.r 3 months to mimic chronic spinal cord *** f.ndings collectively show promising evidence f.r a combinatorial strategy with chondroitinase ABC and Schwann cells in promoting remodeling and recovery of.f.nction f.llowing spinal cord injury.

关键词： axonal regrowth bladder f.nction chondroitinase ABC f.nctional recovery glial scar lentivirus migration Schwann cell spinal cord injury transplantation

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Inf.uence of.Processing Parameters on the Strength of.Air Brazed Alumina Joints Using Aluminium Interlayer

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Journal of.Materials Science & Technology 2011年第7期27卷 641-646页

作者： A. Ibrahim f. Hasan Department of.Metallurgical and Materials Engineering University of Engineering and TechnologyLahore Pakistan

Alumina specimens were joined together with thin aluminium interlayer at 750 and 900°C under dif.erent applied pressures and holding time in air. f.exural strength of.the joints was then measured using a standard f.ur-point bend test method. Characterization of.the interf.ce was carried out to correlate the increase in f.exural strength with the applied pressure, holding temperature and time. The study showed that the strength of.joint is af.ected by all three parameters, i.e., processing temperature, holding time as well as applied pressure.

关键词： Pressure-assisted air brazing Alumina Aluminum Brazing Joining and Ceramic

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Impacts of.wastewater sludge amendments in restoring nitrogen cycle in p-nitrophenol contaminated soil

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Journal of.Environmental Sciences 2011年第4期23卷 616-623页

作者： f. Olcay Topac Sagban Department of.Environmental Engineering Uludag University

The possible impacts on nitrogen-cycle in a p-nitrophenol （PNP） polluted soil and the ef.ectiveness of.wastewater sludge amendments in restoring nitrif.cation potential and urease activity were evaluated by an incubation study. The results indicated that PNP at 250 mg/kg soil inhibited urease activity, nitrif.cation potential, arginine ammonif.cation rate and heterotrophic bacteria counts to some extents. Af.er exposure to PNP, the nitrif.cation potential of.the tested soil was dramatically reduced to zero over a period of.30 days. Based on the f.ndings, nitrif.cation potential was postulated as a simple biochemical indicator f.r PNP pollution in soils. Nitrogen-cycling processes in soils responded positively to the applications of.wastewater sludges. A sludge application rate of.200 tons/ha was suf.icient f.r successf.l biostimulation of.these nitrogen processes. The microbial activities in sludge-amended, heavy PNP-polluted soils seemed to recover af.er 30–45 days, indicating the ef.ectiveness of.sludge as a usef.l soil amendment.

关键词： p-nitrophenol wastewater sludge soil pollution nitrogen-cycle biostimulation

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Model Predictive Control Strategy f.r Residential Battery Energy Storage System in Volatile Electricity Market with Uncertain Daily Cycling Load

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Journal of.Modern Power Systems and Clean Energy 2023年第2期11卷 534-543页

作者： Dejan P.Jovanović Gerard f.Ledwich Geof.rey R.walker Institute of.Electrical and Electronic Engineers QueenslandAustralia School of.Electrical Engineering&Robotics Queensland University of TechnologyBrisbaneAustralia

This paper presents a control strategy f.r residential battery energy storage systems,which is aware of.volatile electricity markets and uncertain daily cycling *** economic benef.ts of.energy trading f.r prosumers are achieved through a novel modif.cation of.a conventional model predictive control(MPC).The proposed control strategy guarantees an optimal global solution f.r the applied control action.A new cost f.nction is introduced to model the ef.ects of.volatility on customer benef.ts more ***,the newly presented cost f.nction models a probabilistic relation between the power exchanged with the grid,the net load,and the electricity *** probabilistic calculation of.the cost f.nction shows the dependence on the mathematical expectation of.market price and net *** techniques f.r calculating this value are *** proposed strategy dif.ers f.om the stochastic and robust MPC in that the cost is calculated across the market price and net load variations rather than across model constraints and parameter variations.

关键词： Optimal control model predictive control(MPC) energy market nonlinear constrained optimization revenue f.r battery energy storage system Gaussian mixture model autoregressive integrated moving average model

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