In an industrial cooling circuit supplied with raw river water, the scaling phenomenon can reduce cooling efficiency and even lead to the shut down of the power plant. During the last twenty years, various methods have been developed in order to estimate the scaling propensity of natural waters, which involve the precipitation of calcium carbonate (CaCO3), the main component of scale. The FCP (...

The operation of any hydraulic power plant is accompanied by pressure pulsations that are caused vortex rope under the runner, rotor–stator interaction and various transitions during changes in operating conditions or start-ups shut-downs. Water conduit undergoes volumetric due to these pulsations. Compression expansion water among mechanisms which energy dissipated system, this corresponds sec...

DNA double-strand breaks (DSBs) can be lethal to a cell. However, most sexually reproducing organisms deliberately induce a substantial amount of developmentally programmed DSBs that are subsequently repaired via homologous recombination in meiosis. The goal of this self-damage and self-repair process is to establish physical connections between homologous chromosomes, thereby ensuring accurate...

In this work, nanocomposite (NC) hydrogels based on polyacrylamide/chromium triacetate were prepared at different reaction mixture (gelant) volumes and their crosslinking process and viscoelastic behaviors were studied. The X-ray diffraction (XRD) patterns taken from the NC hydrogels containing laponite nanoparticles did not show any distinct characteristic basal reflection for all of the NC hy...

The contribution of pulmonary extra-alveolar vessels toward edema development was investigated in isolated dog lungs. In 27 lungs the intraalveolar vessels were shut by alveolar pressure exceeding both arterial and venous pressures. Fluid transudation from extra-alveolar vessels into the interstitial space was estimated both by lung weight gain and serial biopsies examined histologically. Inter...

Renewable Energy In article 2300031, Bryce S. Richards and co-workers demonstrate that renewable electricity created via photovoltaics enables the production of clean drinking water from either brackish or contaminated groundwater – perfect for where infrastructure is lacking such as remote villages in Africa. This paper investigates energy buffering control (enabled batteries supercapacitors) ...

Mussel control in cooling water systems is generally achieved by means of chlorination. Chlorine is applied continuously or intermittently, depending on cost and discharge criteria. In this paper, we examined whether mussels will be able to survive intermittent chlorination because of their ability to close their valves during periods of chlorination. Experiments were carried out using three co...

Ras proteins play fundamental roles in cell signal transduction pathways that regulate cell growth, differentiation, proliferation, and survival. ras mutations are among the most frequently encountered genetic abnormalities in human cancers and play a key role in tumorigenesis. The enzymatic attachment of a 15- or 20-carbon moiety to the Ras protein through farnesylation or geranylgeranylation,...

? must we shut them away? Dr. Norman Capstick outlines a scheme which would save many old people from the isolation of an institution, but still enable them to receive the care and treatment that they need The aim of keeping old people in the community is partly to avoid resignation to an institutional life, with its loss of independence, and also because a hospital is essentially a therapeutic...