Calibrating a side-stream membrane bioreactor using Activated Sludge Model No. 1.

Membrane bioreactors (MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modeling of a side-stream MBR system using the Activated Sludge Model No. 1 (ASM1), and compares the results with the modeling of traditional activated sludge processes.

[Characteristics of blood dynamic parameters in pregnant women with anticardiolipin antibodies and history of adversely pregnant complications].

Objective: To study the characteristics of blood dynamic parameters in pregnant women with anticardiolipin antibody (aCL) and a history of adversely pregnant complications.

Methods: The study included a prospective cohort of pregnant women with (272 cases) and without (186 cases) aCL. Among the aCL positive pregnant women, 91 cases had the history of adversely pregnant complications including spontaneous abortion, still fetus.

Modelling the biological performance of a side-stream membrane bioreactor using ASM1.

Membrane bioreactors (MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modelling of a side-stream MBR system using Activated Sludge Model No. 1 (ASM1), and comparing the results with the modelling of traditional activated sludge processes.

Apoptotic activity of betulinic acid derivatives on murine melanoma B16 cell line.

The mitochondrion plays a crucial role in the process of apoptosis and has thus become one of the targets for the search for potential chemotherapeutic agents. Betulinic acid [3beta-hydroxy-lup-20(19)lupaen-28-carbonic acid], a lupane-type triterpene which is abundant in many plant species, has been shown to exert a direct effect on the mitochondria and subsequent apoptosis in melanoma cells. Chemical synthesis and modification of betulinic acid are being explored to develop more potent derivatives.

Self-adjusted synthesis of ordered stable mesoporous minerals by acid-base pairs.

Although the chemical diversity of ordered composite mesoporous materials has been expanding during the past decade, progress has been limited by the need for a general synthetic approach that is predictive and makes use of well developed fundamental chemical principles. Researchers have previously used the interaction of organic-inorganic (OI) species that are present during the nucleation of the composite phase, and several synthesis pathways, such as direct surfactant-inorganic interaction (S+I-, S-I+, S0I0) and mediated interaction (S+X-I+, S-X+I-), have been proposed. Here we describe a new perspective in which the self-adjusted inorganic-inorganic (II) interplay between two or more inorganic precursors is guided by acid-base chemistry considerations, and in this simple way we produce an overall 'framework' for the sophisticated combination of synergic inorganic acid-base precursor pairs.

Pulmonary artery perfusion with protective solution reduces lung injury after cardiopulmonary bypass.

Background: The inflammatory response and higher temperature of lung tissue during cardiopulmonary bypass can result in lung injury. This study was to evaluate the protective effect of pulmonary perfusion with hypothermic antiinflammatory solution on lung function after cardiopulmonary bypass.

Methods: Twelve adult mongrel dogs were randomly divided into two groups.

Diltiazem concentrations in plasma vs PR intervals on electrocardiogram in 8 men.

Aim: To develop an acute tolerant model in describing relationship between diltiazem (Dil) concentrations in plasma and PR intervals on ECG in men.

Method: Both plasma concentrations of Dil and changes of ECG were simultaneously determined after po Dil 90 mg in 8 men.

Results: A two-compartmental pharmacokinetic model with first-order input gave a good fitting for the plasma concentration of Dil.

The zinc-binding site of Escherichia coli glutamyl-tRNA synthetase is located in the acceptor-binding domain. Studies by extended x-ray absorption fine structure, molecular modeling, and site-directed mutagenesis.

The zinc contents of fragments of Escherichia coli glutamyl-tRNA synthetase, as well as the conservation of the CYC sequence only in zinc-containing glutamyl-tRNA synthetases, suggested that the 98CYCX24-CRHSHEHHADDEPC138 includes some or all residues involved in binding its zinc atom (Liu, J., Lin, S.-X.

Kinase activity of the type V transforming growth factor beta receptor.

The type V TGF-beta receptor purified from bovine liver plasma membranes catalyzed the phosphorylation of casein using [gamma-32P]ATP as co-substrate (Km,app approximately 10 microM). TGF-beta stimulated the casein phosphorylation by the type V receptor with a half-optimal concentration of approximately 0.3 nM.