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Showing 1 to 12 of 242 entries
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According to the book: Using TIMSS to investigate the translation of policy into practice through the world of textbooks

mathematics education

Schmidt WH, Valverde GA.
GSID: aQ7Egg-5rB0J
GA Valverde, LJ Bianchi, RG Wolfe, WH Schmidt… - 2002 - books.google.com

How are curriculum policies translated into opportunities to learn in the classroom? According to the Book presents findings from the largest cross-national study of textbooks …

Refocusing US math and science education

Science education

Schmidt WH, Valverde GA.
GSID: V5sGBztbQJ4J
GA Valverde, WH Schmidt - Issues in Science and Technology, 1997 - JSTOR

TIMSS is far more than the" aca-demic Olympics" that so many in-ternational comparative assess-ments have been in the past. It included a multiyear research and development …

Thermal decomposition of dolomite under CO2: insights from TGA and in situ XRD analysis.

Physical chemistry chemical physics : PCCP

Valverde JM, Perejon A, Medina S, Perez-Maqueda LA.
PMID: 26506285
Phys Chem Chem Phys. 2015 Nov 28;17(44):30162-76. doi: 10.1039/c5cp05596b. Epub 2015 Oct 27.

Thermal decomposition of dolomite in the presence of CO2 in a calcination environment is investigated by means of in situ X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The in situ XRD results suggest that dolomite decomposes directly at a...

Micro-eukaryotic diversity in hypolithons from miers valley, antarctica.

Biology

Gokul JK, Valverde A, Tuffin M, Cary SC, Cowan DA.
PMID: 24832664
Biology (Basel). 2013 Feb 22;2(1):331-40. doi: 10.3390/biology2010331.

The discovery of extensive and complex hypolithic communities in both cold and hot deserts has raised many questions regarding their ecology, biodiversity and relevance in terms of regional productivity. However, most hypolithic research has focused on the bacterial elements...

Effect of vibration on the stability of a gas-fluidized bed of fine powder.

Physical review. E, Statistical, nonlinear, and soft matter physics

Valverde JM, Castellanos A, Quintanilla MA.
PMID: 11497573
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Aug;64(2):021302. doi: 10.1103/PhysRevE.64.021302. Epub 2001 Jul 18.

We have investigated the effect of vibrations on the stability of gas-fluidized beds of fine powders (particle size approximately 10 microm). The powder is uniformly fluidized by an adjustable gas flow that enables us to control the average solid...

Solamargine: The Main Glycoalkaloid from the Fruits of Solanum paludosum.

Planta medica

Valverde M, Lavaud C, Boustie J, Badaoui HE, Muguet B, Henry M.
PMID: 17236014
Planta Med. 1993 Oct;59(5):482. doi: 10.1055/s-2006-959743.

No abstract available.

Pull-off force of coated fine powders under small consolidation.

Physical review. E, Statistical, nonlinear, and soft matter physics

Chen Y, Quintanilla MA, Yang J, Valverde JM, Dave RN.
PMID: 19518222
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Apr;79(4):041305. doi: 10.1103/PhysRevE.79.041305. Epub 2009 Apr 14.

In this paper, a three-dimensional model taking into account the contact deformation and surface area coverage (SAC) of nanoadditives is proposed to predict the force required to separate two contacting particles (the pull-off force) under consolidation stress up to...

Fluidization of nanopowders: a review.

Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology

van Ommen JR, Valverde JM, Pfeffer R.
PMID: 22593643
J Nanopart Res. 2012 Mar;14(3):737. doi: 10.1007/s11051-012-0737-4. Epub 2012 Feb 10.

Nanoparticles (NPs) are applied in a wide range of processes, and their use continues to increase. Fluidization is one of the best techniques available to disperse and process NPs. NPs cannot be fluidized individually; they fluidize as very porous...

A Langmuir-Hinshelwood approach to the kinetic modelling of catalytic ammonia decomposition in an integral reactor.

Physical chemistry chemical physics : PCCP

Armenise S, García-Bordejé E, Valverde JL, Romeo E, Monzón A.
PMID: 23652211
Phys Chem Chem Phys. 2013 Aug 07;15(29):12104-17. doi: 10.1039/c3cp50715g. Epub 2013 May 07.

The increasing interest in ammonia decomposition is due to the fact that this compound can be used advantageously as a hydrogen carrier, allowing the development of single-step hydrogen generation systems. With the aim of developing efficient reactors for ammonia...

[Therapeutic education didactic techniques].

Revista de enfermeria (Barcelona, Spain)

Valverde M, Vidal M, Jansa M.
PMID: 23157069
Rev Enferm. 2012 Oct;35(10):42-51.

This article includes an introduction to the role of Therapeutic Education for Diabetes treatment according to the recommendations of the American Diabetes Association (ADA), the Diabetes Education Study Group (DESG) of the "European Association for Study of Diabetes (EASD)...

A Rare Presentation of Invasive Tuberculosis of the Central Nervous System in an Immunocompetent Patient in a Nonendemic Country.

Case reports in neurological medicine

Martins R, Casimiro C, Valverde A, Campillo J.
PMID: 30112229
Case Rep Neurol Med. 2018 Jul 09;2018:2940947. doi: 10.1155/2018/2940947. eCollection 2018.

We herein report a rare case of a 25-year-old immunocompetent male patient with disseminated tuberculosis of central nervous system (CNS), first presenting as multiple cerebral lesions with no meningeal involvement. Subsequent diagnostic workup disclosed extensive peritoneal involvement. A broad...

Nonequilibrium Self-Assembly of π-Conjugated Oligopeptides in Solution.

ACS applied materials & interfaces

Li B, Li S, Zhou Y, Ardoña HA, Valverde LR, Wilson WL, Tovar JD, Schroeder CM.
PMID: 28067038
ACS Appl Mater Interfaces. 2017 Feb 01;9(4):3977-3984. doi: 10.1021/acsami.6b15068. Epub 2017 Jan 19.

Supramolecular assembly is a powerful method that can be used to generate materials with well-defined structures across multiple length scales. Supramolecular assemblies consisting of biopolymer-synthetic polymer subunits are specifically known to exhibit exceptional structural and functional diversity as well...

Showing 1 to 12 of 242 entries