Left History features articles from a variety of theoretical approaches; these include feminist, marxist, and postmodernist deliberations on topics such as race, ethnicity, class, gender, sexuality, culture, the state, labour, environment, theory, method.

Abstract Gearboxes are usually lubricated with oil or grease to reduce friction and wear dissipate heat. However, gearbox applications that cannot be grease, for example in the space food industry, commonly solid lubricants. Especially lubricants a lamellar sliding mechanism like graphite molybdenum disulfide (MoS 2 ) diamond-like carbon (DLC) coatings can enable very low coefficients of fricti...

Chassis dynamometer tests were performed on seven light heavy-duty diesel trucks comparing the emissions of a California diesel fuel with emissions from four other fuels: ARCO emissions control diesel (EC-D) and three 20% biodiesel blends (one yellow grease and two soy-based). The EC-D and the yellow grease biodiesel blend both showed significant reductions in total hydrocarbons (THC) and carbo...

A total of 2,011 pigs (PIC 1050 × DNA 600; initially 62.4 ± 4.6 lb) were used in a 113-d finishing trial to evaluate the effects two different fat sources fed at levels on growth performance, carcass characteristics, iodine value, and economics raised commercial environment. Pigs randomly allotted 1 5 dietary treatments with 21 27 per pen 16 pens treatment. Dietary arranged 2 + factorial main s...

The feedstock used in our experiment for the production of biodiesel was Yellow Grease. The whole experiment was divided into two parts: Production and Testing. Production involves Transesterification of free fatty acids in yellow grease to form yellow grease alkyl esters. The process of testing involved calculation of the physio – chemical properties, acid value, density, kinematics viscosity ...

Paper aims This paper presents a nonlinear time series prediction methodology using Neural Networks and Tracking Signals method to detect bias their responsiveness non-random changes in the series. Originality study contributes with an innovative approach of methodology. Furthermore, Design Experiments was applied simulate datasets analyze results Average Run Length, identifying which condition...