quality and flesh colour characteristics of blood oranges following harvest is related to and dependent upon temperature and storage conditions. to investigate the effects of different temperatures (8, 15 and 22ºc) and different storage period (0, 25, 50 and 75 days) on total soluble solids, titrable acidity, ph, ascorbic acid, total phenolic contents, antioxidant capacity, anthocyanin level, a...

Tank liquid ammonia (Ohio Chemical and Manufacturing Company) was distilled from sodium shavings into a tube of about 120 cc. volume. This was equipped with a thermocouple well, inlet and outlet side arms protected with calcium chloride and phosphorus pentoxide drying towers, and a standard taper cap containing a mercury seal stirrer. A current of dry nitrogen could be passed through the tube, ...

The title compound, C(10)H(8)BrN, was obtained by slow addition of sodium azide to 8-bromo-1-naphthoic acid, followed by addition of aqueous ammonia. The crude product was crystallized from petroleum ether to give pink crystals. Compared to other 1,8-disubstituted naphthalene compounds, this compound exhibits less strain between the 1 and 8 substituents. Additionally, the NH protons form both i...

AS HRAE Jou rna l ash rae .o rg Fe b r u a r y 2 0 0 8 Andy Pearson, Ph.D., CEng, is managing director at Star Refrigeration Ltd., Glasgow, U.K. About the Author In recent years ammonia has been applied in many applications where traditionally it was not common. This article reviews the progress that has been made in bringing ammonia systems to a wider market and explores other possible applica...

Idiopathic hyperammonemia is characterized by increased serum ammonia levels (>200umol/L) and is sometimes associated with normal to slightly elevated liver function tests [1]. These patients often present with encephalopathy, cerebral edema, seizures, and coma. Idiopathic hyperammonemia has been reported after high dose chemotherapy, and organ transplants including Orthotopic lung transplant [...

Current global inventories of ammonia emissions identify the ocean as the largest natural source. This source depends on seawater pH, temperature, and the concentration of total seawater ammonia (NHx(sw)), which reflects a balance between remineralization of organic matter, uptake by plankton, and nitrification. Here we compare [NHx(sw)] from two global ocean biogeochemical models (BEC and COBA...

THE FIELD OF TRANSPORT PHYSIOLOGY was fundamentally changed by the discovery of transport proteins that are specific for small neutral molecules such as urea, water, ammonia, and CO2. The identification of first urea transporters (12), then aquaporins or water channels (1), and most recently ammonia transporters (8) (that may also facilitate the movement of CO2), challenged the long-held view t...

The UV absorption and emission spectra of anthracene in an argon matrix were measured. Three major spectroscopic systems were observed, assignable to anthracene molecules occupying distinct sites. The origins of these systems were red-shifted with respect to the isolated molecule by 535,69 1 and 722 cm-‘. At 17 K all lines were well resolved, with about 8 cm-’ fwhm. Addition of a small amount o...