The hydrogen (H₂) cycle associated with the dinitrogen (N₂) fixation process was studied in laboratory cultures of the marine cyanobacterium Crocosphaera watsonii. The rates of H₂ production and acetylene (C₂H₂) reduction were continuously measured over the diel cycle with simultaneous measurements of fast repetition rate fluorometry and dissolved oxygen. The maximum rate of H₂ production was c...

Varieties and the Transfer Problem: the Extensive Margin of Current Account Adjustment* Most analyses of the macroeconomic adjustment required to correct global imbalances ignore net exports of new varieties of goods and services and do not account for firms' net entry in the product market. In this paper we revisit the macroeconomics of trade adjustment in the context of the classic `transfer ...

The increasing competition for water resources requires a better understanding of flows, fluxes, stocks, and the services and benefits related to water consumption. This paper explains how public domain Earth Observation data based on Moderate Resolution Imaging Spectroradiometer (MODIS), Second Generation Meteosat (MSG), Tropical Rainfall Measurement Mission (TRMM) and various altimeter measur...

Many jurisdictions use net metering to record power exchanges between residential solar photovoltaic (PV) panels and the grid, thus valuing at electricity retail rate. However, if over billing period, production exceeds consumption, surplus remains freely available for consumption. In Wallonia (Belgium), combination of generous subsidies rooftop PV installation encouraged households set-up larg...

In order to investigate the effect of sugarcane compost on consumption of nitrogenous fertilizers in corn fields, a research project was conducted according split plot experiment based on randomized complete block design with three replications along 2015 year. The main plot included different chemical nitrogenous fertilizer (Zero; control, 60 and 120 kg.ha-1 pure nitrogen from urea ...

the purpose of this article is to evaluate the pivotal irrigated wheat project by cost-benefit analysis method in order to find the internal rate of return and the ratio of present value of net benefits to costs.to this end, we have estimated the economic surplus created due to shift in wheat supply , as result ofimplementation ofthe project and have calculated the above criteria. we found that...