Over the past decades, human use of environmental resources has largely increased and thereby led to ecological and socio-economic concerns. Damage to land and water ecosystems, resource depletion, and local extinction of formerly common species are well-documented (Vitousek et al., 1997; Dirzo et al., 2003; Storkey et al., 2012). They highlight how unsustainable many human-environmental intera...

T R I B O L O G Y & L U B R I C A T I O N T E C H N O L O G Y W W W . S T L E . O R G wide range of approaches have been undertaken to determine how to reduce emissions from automotive engines. in a previous TLT article, the development of the homogeneous charge compression ignition (hCCi) engine was discussed. When used in place of a conventional gasoline engine, an hCCi engine can produce a 1...

The emergence of new technologies is characterised by a broad array of inherent uncertainties. This holds all the more for technologies which bear the potential to trigger radical innovation. These technologies typically pose particular technological challenges and they allow new ways of application, which often require the adaptation of regulatory frameworks and affect established business mod...

he central theme of this paper is how to influence technological development in the T direction of sustainability. This question will be approached from theoretical and practical points of view. Theoretically, the concept of constructive technology assessment is introduced, which aims to manage technological development in directions that are optimal with respect to social acceptance @aey Ouwen...

In response to changes in environmental conditions, animals and humans alike can initiate physiological regulatory mechanisms to assure survival. For example, when food is scarce, the body becomes “thrifty”, and conversely, when it is abundant, physiological “unthrifty” mechanisms are initiated. Recent work has uncovered novel cellular mechanisms of fuel sensing that contribute to these shifts ...

This paper describes the results of experiments using a pilot-scale, 140,000 Btu/h, solid fuel continuous feed laboratory incinerator. A synthetic fuel representative of the municipal solid waste in the United States was formulated and used in this research. The fuel contained Fe and SiO2, and was doped with trace amounts of Al, Ni, Cr, Hg, and PbO. Experiments were performed with varying fuel–...

The achievement of high gain with inertial fusion requires the compression of hydrogen isotopes to high density and temperatures. High densities can be achieved most efficiently by isentropic compression. This requires relatively slow pressure pulses on the order of 10-20 nanoseconds; however, the pressure profile must have the appropriate time history [J. Nuckolls et. al. Nature, 239, 139, 197...

Correction for 'In situ study of the catalytic mechanism for the oxygen reduction reaction on a polypyrrole modified carbon supported cobalt hydroxide cathode in direct borohydride fuel cells' by Haiying Qin et al., Phys. Chem. Chem. Phys., 2013, 15, 9070-9074.

AMP-activated protein kinase (AMPK) is a conserved cellular fuel gauge previously implicated in aging. In this issue, Lu et al. (2011) describe how age-related deacetylation of Sip2, a subunit of the AMPK homolog in yeast, acts as a life span clock that can be wound backward or forward to modulate longevity.

Neurons are thought to primarily rely on glucose to fuel mitochondrial metabolism. In this issue, Divakaruni et al. (2017. J. Cell Biol. https://doi.org/10.1083/jcb.201612067) show that neurons are also happy to use glutamate. When neurons use this neurotransmitter, its concentration drops, thus protecting against glutamate-induced excitotoxic stress.