In this study, the modified rice bran was tested to remove Pb(II) from water. Batch experiments were carried out to evaluate the adsorption characteristics of the modified rice bran for Pb(II) removal from aqueous solutions. The adsorption isotherms, thermodynamic parameters, kinetics, pH effect, and desorbability were examined. The results show that the maximum adsorption capacity of the modif...

The objective of this study has been to develop a typical specification of the Almost Ideal Demand System (AIDS) for Iran’s composition of imports including capital, intermediate and consumer goods. Accordingly, we first test the hypotheses that import demand is homothetic, homogeneous, symmetric, and depends on domestic prices. Then, we estimate the long-run elasticities of the composition o...

The objective of this study has been to evaluate the stability of alpha-, (gamma+beta)-, and delta-tocopherols in rice bran oil chemically refined submitted to heating in a heater without air circulation and shielded from light, at temperatures of 100 degrees C and 180 degrees C. The collection of samples took place after 48, 96, 144, 192, 240, 336, and 432 h of heating and were stored in amber...

When cholera broke out in Mozambique, Kenya, Tanzania and Uganda in 1997, an urgent measure was filed with the Sanitary and Phytosanitary Committee of the World Trade Organization, by the European Union, citing the protection of human health, to limit imports of fish products. The authors analysed import data on specified products over time to quantify the trade impact of this measure. Using pr...

Can two-way trade in similar products lead to lower welfare than if such trade was banned? Theory answers yes. To empirically investigate this proposition we examine Swedish imports of bottled water. Assuming one-shot (Bertrand and Cournot) competition, we can use the estimates from a structural model of demand to uncover marginal costs. We simulate the effect on consumer and producer surplus o...

The international effects of United States countervailing duties on imports of coated free sheet paper from China, the Repuhlic of Korea, and Indonesia were predicted with the Global Forest Products Model, up to the year 2020. The results indicate that the production of printing and writing paper in China, Indonesia, and the Republic of Korea would be lower. The trade balance would worsen in Ko...

Using a new dataset on imports of technology and total factor productivity (TFP) over more than a century for the OECD countries, this paper tests for international technological transmission through trade. The empirical estimates suggest that imports of knowledge have been responsible for an almost 200% increase in TFP over the past century, but that the spillover effect has been highly uneven...

Using detailed micro data from the Indonesian manufacturing sector; we examine whether participation in international trade affects establishments' productivity. Establishments participating in exports or imports have relatively high levels of productivity. Furthermore, the results suggest that establishments engaged in exports have shown comparable high productivity growth. The larger the shar...

Expression levels of the NAC gene family were studied in rice infected with Rice dwarf virus (RDV), Rice black-streaked dwarf virus (RBSDV), Rice grassy stunt virus (RGSV), Rice ragged stunt virus (RRSV), and Rice transitory yellowing virus (RTYV). Microarray analysis showed that 75 (68%) OsNAC genes were differentially regulated during infection with RDV, RBSDV, RGSV, and RRSV compared with th...