Recovery of metabolites from fermentation broth by solvent extraction can be used to optimize fermentation processes. End-product reutilization, low product concentration and large volumes of fermentation broth and the requirements for large bioreactors, in addition to the high cost largely contributed to the decline in fermentative 2,3-butanediol production. Extraction can successfully be ...

Jatropha curcas L. is an important biofuel plant with excellent tolerance of barren environments. However, studies on the regulatory mechanisms that operate in this plant in response to nitrogen (N) shortage are scarce. In this study, genome-wide transcriptional profiles of the roots and leaves of 8-week old physic nut seedlings were analyzed after 2 and 16 days of N starvation. Enrichment resu...

The microbiological quality of effluents from different macrofiltration systems (pressure sand filter and disc filter) used as pre-treatment and membrane technologies (microfiltration and ultrafiltration) was evaluated in order to determine their possible application as alternatives to disinfection of urban wastewater prior to reutilization. Microbiological quality was determined by reference t...

The exogenous surfactant, Curosurf, contains proteins as well as phospholipids. We investigated the possibility that these might affect the reutilization of exogenous phospholipid by type II alveolar cells isolated from rat lung. The time course of incorporation into lamellar bodies of radioactivity from tritiated dipalmitoyl-phosphatidylcholine (DPPC) contained within liposomes was studied. Ra...

The study of development processes is a key issue regarding quality of final products and reutilization of process portions or fragments. In this work, the process of a particular methodology for Agent Oriented Development is defined using a standard notation, in particular SPEM 2.0 . This case study shows the suitability of process definition as a starting point for reuse of the development pr...

This paper presents a new object-oriented framework for optimization based on evolutionary computation techniques to address NP-hard problems. At present, the NP-Opt is customized to deal with five classes of problems. The level of code reutilization is high and allows the adaptation to new problems very quickly, just by adding a few new classes to the framework. The structure of the classes an...

The turnover of total collagen in several tissues of 12-week-old normotensive and hypertensive rats was estimated by using tritium-labeled proline as a precursor. The effect of reutilization of the label was minimized by treatment with large doses of unlabeled proline subsequent to administering the radioactive imino acid. The collagen from skin, tail tendon, aorta, and mesenteric artery in nor...

Thymidine reutilization was studied in reutilized by the salvage pathway mdisingle cells of the rat bone marrow. cated that approximately 40-60 per cent Using 3H-TdR in parallel with 1251-UdR of the thymidine in the blast cells is in conunction with the autoradiographic supplied from DNA of dead cells. This technique, cells of the erythrocytic sevalue is similar to that reported preries, the me...