اصل و ترجمه مقاله لاتین Pulsed Light Treatments for Food Preservation. A Review

Pulsed Light Treatments for Food Preservation. A Review Abstract Consumers demand high-quality processed foods with minimal changes in nutritional and sensory properties. Nonthermal methods are considered to keep food quality attributes better than traditional thermal processing. Pulsed light (PL) is an emerging nonthermal technology for decontamination of food surfaces and food packages, consisting of short time high-peak pulses of broad spectrum white light. It is considered an alternative to continuous ultraviolet light treatments for solid and liquid foods. This paper provides a general review of the principles, mechanisms of microbial inactivation, and applications of PL treatments on foods. Critical process parameters that are needed to be optimized for a better efficiency of PL treatments are also discussed. PL has considerable potential to be implemented in the food industry. However, technological problems need to be solved in order to avoid food overheating as well as to ac ...

اصل و ترجمه مقاله لاتین Back to the basics: Revisiting the development accounting methodology

Back to the basics: Revisiting the development accounting methodology Abstract The standard baseline estimate in development accounting is imprecise because of a mismatch between the estimate of physical capital and the estimate of physical capital’s share, the fraction of total income accruing to physical capital. I adjust for this mismatch, and in so doing, incorporate natural capital. I also treat factor shares as variables, not constant parameters. To accommodate these adjustments, I carry out a development accounting analysis using translog multilateral indices of outputs, inputs and productivity. Results reveal that the correction for the mismatch between physical capital and its share, which is the weight assigned to the physical capital input in development accounting, reduces the variation in output per worker explained by observables by as much as 15 percentage points relative to the standard baseline. Most of this reduction is due to a decline in the explanatory power ...