Search results for " mill"
showing 10 items of 274 documents
Enhancement of self-sustaining reaction by mechanical activation: case of an FeSi system
1999
Mechanical high energy ball milling of an Fe2Si elemental powders mixture was used to activate a self sustaining combustion reaction or so-called self-propagating high-temperature synthesis (SHS) to form iron disilicide, a reaction for which the thermodynamic criterion is not favorable. A complete characterization of the milled powders before reaction was performed with energy dispersive X-ray spectrometry, specific surface measurements and X-ray diffraction profile analysis. Thermal and structural information describing the combustion front initiated by heating up a sample to 400°C in a Fe‐Si system is communicated. In order to isolate the phases involved in the gasless reaction, a time-re…
Controlling the Formation of Sodium/Black Phosphorus IntercalationCompounds Towards High Sodium Content
2021
The solid-state synthesis of pure sodium-black phosphorus intercalation compounds (Na-BPICs) has been optimized in bulk for two stoichiometric ratios. Specifically, in-situ X-Ray diffraction (XRD) allowed the precise identification of the optimal temperature range for the formation of Na-BPICs: 94°C–96°C. Moreover, as the undesired formation of Na3P takes place at this very same range, we succeeded in introducing a new synthetic route based on a fast-thermal ball milling implementation that results in the bulk production of BPIC without Na3P in 9 out of 10 cases. Finally, by combining XRD, Raman spectroscopy, and DFT calculations we developed a new structural model for Na-based BPICs showin…
Responsabilità degli intermediari di Internet e nuovi obblighi di conformazione: robo-takedown, policy of termination, notice and take steps
2017
Internet service provider liability and new duties: robo-takedown, policy of termination, notice and take steps The essay — after clarifying the outlines of the two main “safe harbor” provisions which limit the liability of online service providers as regards copyright infringement in the Western Legal Tradition, namely the U.S. section 512 of the Digital Millennium Copyright Act and articles 12 through 15 of the EU Directive on e-commerce — enquires the way in which the most recent case-law, respectively that of the U.S. Federal Courts and of the European Court of Justice, is enhancing the standard of protection and the enforcement of intellectual property rights. Indeed, both the Digital …
Digital natives: Lucky or jellied?
2018
The technology now seems to have involved not only the world of adults, but also and especially that of children, becoming a form of communication and rapid interaction and widespread dissemination. Some parents start to worry about a possible technolog- ical dependency, given the hours spent by the youngest, called digital children, in front of computer, smartphones and tablets. A decade ago, the sociologist Mark Prensky spoke of digital natives, that is the first generation of children grew up with consoles, videogames and computers while today we are witnessing an evolution of this concept in the third generation of digital, appeared approximately with the arrival of iPad and tablet and …
Postapokalipses un distopijas atainojums Džordža Millera filmā "Mad Max. Fury road"
2016
Bakalaura darbā tiks pētīts austrāļu režisora Džordža Millera filmas “Mad Max. Fury road” postapokaliptiskās un distopiskās vides atainojums un paņēmieni, ar kuriem vide izveidota filmas ietvaros. Teorētiskajā daļā tiks sīkāk apskatītas tēmas un žanri, kā arī semiotiskie un naratīva elementi, kas ietver informāciju, aprakstot autora izvēlētos paņēmienus kā atainot postapokaliptisku un distopisku vidi. Metodoloģijas daļā tiks pamatotas izvēlētās metodes pētījuma izveidei– naratīva un semiotiskā analīze. Pēc metodoloģijas apraksta seko empīriskā daļa, kurā tiks izanalizēta augstākminētā kinofilma. Lai sīkāk pētītu “Mad Max. Fury road”, tiks aprakstīta arī “Mad Max” franšīze kopumā, kurā ietil…
The Challenges Faced by Life Insurance Companies in the Baltic States
2020
The Baltic life insurance market is a young steadily growing market. It began its development in the early 1990s when all three Baltic States, specifically Estonia, Latvia and Lithuania, have regained their independence. The Baltic life insurance market is limited due to a relatively small size with approximately six million inhabitants in all three countries. Additionally, the operations have deteriorated due to the low interest rates and the negative fluctuations in the financial market. The lessons learnt by the life insurers in the Baltic States are useful to other small countries in the European Union (EU) as well as to the larger States, to help bring to light the challenges of those …
Survey of organochlorines in Finnish watercourses by caged mussel method
2002
Monitoring organochlorine compounds with caged common lake mussels (Anodonta piscinalis) in the pulp and paper mill recipient watercourses of Finland annually from 1984 produced many statistically significant time trends. A decrease of chlorophenols and chloroguaiacols originating from chlorobleaching were observed in all recipients in parallel with the decreasing discharges from the mills. Metabolites of chlorophenols, chloroanisoles and chloroveratroles were constant. Significantly elevated PCB concentrations were measured in four watercourses. At two of these areas, the PCB concentrations were constant. In contrast, a statistically significant increase of PCB (and DDE) was found at one r…
An introduction to the Economics of Fake Degrees
2008
08045; International audience; This paper critiques the multifarious ways whereby academic qualifications may be falsified in the international marketplace. The objectives are fourfold: (1) defining the main terms used such as fake degrees and diploma mills; (2) providing a brief history of fake degrees and identifying the factors that explain their recent development; (3) developing a theoretical framework to analyze fake degrees; and (4) exploring the costs and benefits of this activity and its net impacton a given society. Degrees serve instrumental and ceremonial purposes. It is argued that degree holders may be considered as members of a club. They confer totheir holders excludable but…
El "servicio de millones" y la población del reino de Granada en 1591
1961
Electrochemical treatment of paper mill wastewater by electro-Fenton process
2019
Abstract The electrochemical oxidation of organics in paper mill wastewater belonging to Halfa industries (Tunisia) was performed by galvanostatic electrolyses using electro-Fenton (EF) process. The effect of several operating parameters, such as applied current density, electrodes material, air pressure and the presence of sodium chloride (NaCl) was evaluated. In particular, carbon felt (CF), modified carbon felt (MCF) and gas diffusion electrode (GDE) were used as cathode while Ti/IrO2-Ta2O5 and Boron Doped Diamond (BDD) as anode. Total Organic Carbon (TOC) measure was chosen as reference parameter to assess the extent of the treatment. The experimental results show that, by adopting the …