Multistage membrane distillation (MD) systems can have significantly higher efficiencies than their single stage counterparts. However, multistage MD system design has received limited attention. In this paper, the performance of a multistage vacuum membrane distillation (MSVMD) which is thermodynamically similar to a multi-stage flash distillation (MSF) is evaluated for desalination, brine con...

SUMMARY We have created the GOR V web server for protein secondary structure prediction. The GOR V algorithm combines information theory, Bayesian statistics and evolutionary information. In its fifth version, the GOR method reached (with the full jack-knife procedure) an accuracy of prediction Q3 of 73.5%. Although GOR V has been among the most successful methods, its online unavailability has...

This paper presents a numerical study of closed-cycle evaporation system for the desalination seawater. The couples condensing end heat pump with humidifier, where air is dehumidified in evaporator. First, mechanism action was analyzed from perspective transfer, and control equations mass transfer were investigated. In addition, mathematical model developed validated. influence several importan...

I-123 IBF is a dopaminergic antagonist which is suitable for SPECT imaging of D2 receptors. The purpose of this study is to evaluate the potential usefulness of semi-quantitative parameters obtained from brain SPECT data of I-123 IBF for differential diagnosis in patients with parkinsonism (PN). Subjects were 10 patients with PN: 2 patients with striato-nigral degeneration (SND), 5 patients wit...

Antibody responses to the GOR autoepitope are frequently detected among anti-hepatitis C virus (anti-HCV)-positive patients with chronic hepatitis. Sera from 110 anti-HCV-negative patients with occult HCV infection, as diagnosed by detection of HCV RNA in hepatic tissue, were investigated for GOR antibody reactivity. A positive test for anti-GOR immunoglobulin G (IgG) was found for 22 (20%) of ...

In this work a low power, low voltage and high gain operational amplifier is proposed. For this purpose a negative resistance structure is used in parallel with output to improve the achievable gain. Because of using self cascode transistors in the output, the proposed structure remains approximately constant in a relatively large output voltage swing causing an invariable gain. To evaluate the...

A hybrid Multi-Stage Flash–Humidification Dehumidification (MSF-HDH) desalination system is investigated for energy recovery from an MSF system. The MSF-HDH increases total productivity and performance ratio reduces brine rejection. Hot condensed steam that leaves the heater used to warm rejected pretreated a higher temperature suitable HDH operation (about 60 °C). This allows us increase produ...

Background: Transient lower oesophageal sphincter relaxation (TLOSR) is the predominant mechanism of gastro-oesophageal reflux (GOR) in healthy infants but the mechanisms of GOR in infants with GOR disease (GORD) are poorly understood. Aims: To measure the occurrence of TLOSR, GOR, and gastric emptying (GE) rate in preterm and term infants with GORD. Patients: Thirty six infants were studied an...

BACKGROUND Pregnancy is associated with an increased incidence of heartburn. However, there is no information for other symptoms related to gastro-esophageal reflux (GOR). AIM to assess the prevalence of atypical symptoms of GOR during pregnancy, and to examine its association with typical GOR symptoms. METHODS we report data for 263 women with a pregnancy of less than 12 weeks. They were i...