Synthesis and Characterization of Magnetic Nanoparticles with High Magnetization and Good Oxidation Resistibility

Magnetic nanoparticles attract increasing attention because of their current and potential biomedical applications, such as, magnetically targeted and controlled drug delivery, magnetic hyperthermia and magnetic extraction. Increased magnetization can lead to improved performance in targeting and retention in drug delivery and a higher efficiency in biomaterials extraction. We reported an approach to synthesize iron contained magnetic nanoparticles with high magnetization and good oxidation resistibility by pyrolysis of iron pentacarbonyl (Fe(CO)[subscript 5]) in methane (CH[subscript 4]). Using the high reactivity of Fe nanoparticles, decomposition of CH[subscript 4] on the Fe nanoparticles leads to the formation of nanocrystalline iron carbides at a temperature below 260°C. Structural investigation indicated that the as-synthesized nanoparticles contained crystalline bcc Fe, iron carbides and spinel iron oxide. The Mössbauer and DSC results testified that the as-synthesized nanoparticle contained three crystalline iron carbide phases, which converted to Fe[subscript 3]C after a heat treatment. Surface analysis suggested that the as-synthesized and subsequently heated iron-iron carbide particles were coated by iron oxide, which originated from oxidization of surface Fe atoms. The heat-treated nanoparticles exhibited a magnetization of 160 emu/g, which is two times of that of currently used spinel iron oxide nanoparticles. After heating in an acidic solution with a pH value of 5 at 60°C for 20 h, the nanoparticles retained 90 percentage of the magnetization.

Good Practice in the use of PowerPoint

This presentation aims to encourage academic staff to make better use of PowerPoint by avoiding dependence on or abuse of bullet points. It highlights PowerPoint's emergent properties and presents clear guidelines for effective slides

Work-life balance - You've never had it so good??

Gives some personal reflections on work-life balance in both services and in academic research. Over the last few years both childcare and working practices have changed for the better. I hope this will stimulate discussion with the contributions from other academics at the WiSET discussion session.

New Brand PowerPoint template - good practice advice

This short video introduces the new teaching templates and provides advice about good slide design

Blackboard Good Practice Guide

This short (4 sides of A4) document provides advice to tutors about essential and recomended practices, organisational principles, blended learning, accessibility and copyright.

What makes a good learning activity for school kids: examples from the MiGen project

Powerpoint describing good educational eactivities

Faculty Good Practice - Event

Slides and link to Panopto recording about 'good practice' within from across the Faculty Adam Procter - Winchester School of Art. Liz Williams - Southampton Law School. Jean Leah - School of Management.

Asymmetrically fair rules for an indivisible good problem with a budget constraint

We study a particular restitution problem where there is an indivisible good (land or property) over which two agents have rights: the dispossessed agent and the owner. A third party, possibly the government, seeks to resolve the situation by assigning rights to one and compensate the other. There is also a maximum amount of money available for the compensation. We characterize a family of asymmetrically fair rules that are immune to strategic behavior, guarantee minimal welfare levels for the agents, and satisfy the budget constraint.

Is it always good to let universities select their students?

We undertake a first step to investigating a reform that has been applied in numerous universities across Europe: the right to select students. We ask to what extent this right will increase the efficiency of the university. While it seems evident that giving universities the right to select students that match best with the human capital of professors should increase efficiency measures in the productivities of students in the labor market, we point to a potentially negative efect. We argue that allowing universities to select the students they prefer can reduce the incentives of the universities to improve the human capital of their professors.

Squeak's good idea.

Un pequeño elefante, quiere salir a pasear, pero todo el mundo está ocupado y decide ir solo, pero cada vez que abre la puerta piensa que necesita una cosa más para estar seguro. Piensa que puede hacer frío y coge ropa de abrigo. Piensa que puede llover y coge algo para el agua. Que puede tener hambre y recoge la cesta de picnic. Es un cuento sobre la independencia y la anticipación a los problemas con el que los niños se identifican con facilidad.

Squeak's good idea.

Todo el mundo está demasiado ocupado, parece, por lo que Squeak tiene que ir por su cuenta. Para lo que él quiere hacer, necesita muchas cosas.

Dramatically good geography.

Forma parte de una serie que pretende mejorar la enseñanza y el aprendizaje de la geografía y cuyos beneficiarios sean tanto los profesores como los alumnos. Para ello, los profesores de geografía acceden a las investigaciones más actuales sobre estos temas y los alumnos disfrutan en sus aulas de los últimos planteamientos prácticos. Dentro de este contexto, se estudian aquí las posibilidades de utilizar las estrategias del teatro en el aprendizaje de la geografía con los alumnos de secundaria.

The bad good manners book.

Consejos muy divertidos sobre buenos y malos modales. Por ejemplo, en el cuarto de baño, no se debe cortar el pelo en el lavabo, no atascar el water con papel y cerrar bien los grifos. Tampoco juegues en la cocina, ni mires por el ojo de la cerradura, ordena tu habitación.