PROTON EXCHANGE MEMBRANE FUEL CELL AS AN ALTERNATIVE TO THE INTERNAL COMBUSTION ENGINE FOR EMISSION REDUCTION: A REVIEW ON THE EFFECT OF GAS FLOW CHANNEL STRUCTURES

Proton exchange membrane fuel cells are a new energy technology with great potential due to advantages such as high efficiency and no pollution.The High lift conditioning cream structure of the gas flow channels has a profound impact on the overall performance of the fuel cell.Different flow channel geometries have their own advantages and disadvan

This paper describes the need by researchers and managers of caribou (Rangifer tarandus) to carefully assess the impact of their study methods on animals and results.An error made during a study of barren-ground caribou is described.Assumptions made during preparation of study methods need to be tested during collection of data.Study plans should i

The article studies prospective for transformation of the current global deterrence system in 21 century, paying special attention to the structures of treaties past 2021.After the mainstay arms control treaty (New START) expiration development of the new system of treaties and agreements seems inevitable, quite possibly, on multilateral basis.The

The accurate extraction of railway tracks is crucial for the development of digital railway systems.However, traditional manual methods for track extraction are both time-consuming and tedious.At the same time, current deep learning neural networks often suffer from issues such as missed detections and false positives when it comes to identifying a