Wastewater treatment (WWT) of wet flue gas desulfurization (WFGD) effluent, mercury and selenium control are becoming critical issues for many utilities operating with coal-fired power generation. Research has shown that absorber slurry oxidation reduction potential (ORP) is a primary factor for determination of control of WFGD chemistry. Previously unexplained swings in the ORP of operating WF...

Experimental evidence proves that polymer-stabilized blue phase liquid crystal is not perfectly optically isotropic. The optical rotatory power (ORP) of double twist cylinders causes the polarization axis of the transmitted light to rotate a small angle, and leaks through the crossed polarizers. Rotating the analyzer by ~2 to correct this ORP can improve the contrast ratio by 3X. Author

CONTEXT Radical prostatectomy (RP) approaches have rarely been compared adequately with regard to margin and perioperative complication rates. OBJECTIVE Review the literature from 2002 to 2010 and compare margin and perioperative complication rates for open retropubic RP (ORP), laparoscopic RP (LRP), and robot-assisted LRP (RALP). EVIDENCE ACQUISITION Summary data were abstracted from 400 o...

INTRODUCTION Despite a rapid dissemination of robot-assisted radical prostatectomy (RARP) over open radical prostatectomy (ORP), to date no study has compared perioperative outcomes between the two approaches in patients with high-risk prostate cancer (PCa). The aim of our study was to evaluate the safety and feasibility of RARP in this setting. PATIENTS AND METHODS Overall, 1,512 patients wi...

Redox potential has been identified by the Organisation for Economic Co-operation and Development (OECD) as one of the parameters that should be investigated for the testing of manufactured nanomaterials. There is still some ambiguity concerning this parameter, i.e., as to what and how to measure, particularly when in a nanoecotoxicological context. In this study the redox potentials of six nan...

This paper presents findings of an investigation into the relationships between nitrate utilization rate (NUR), pH and oxidation reduction potential (ORP) during anoxic transformation processes in municipal wastewater. The study utilized municipal wastewater obtained from a wastewater treatment plant located within Shah Alam, Malaysia. Denitrification was observed by monitoring the change in ni...

Wild-type Escherichia coli K-12 ferments glucose to a mixture of ethanol and acetic, lactic, formic, and succinic acids. In anoxic chemostat culture at four dilution rates and two different oxidoreduction potentials (ORP), this strain generated a spectrum of products which depended on ORP. Whatever the dilution rate tested, in low reducing conditions (-100 mV), the production of formate, acetat...

The orange-coloured protein (ORP) from Desulfovibrio gigas is a 12 kDa protein that contains a novel mixed-metal sulfide cluster of the type [S(2)MoS(2)CuS(2)MoS(2)]. Diffracting crystals of the apo form of ORP have been obtained. Data have been collected for the apo form of ORP to 2.25 A resolution in-house and to beyond 2.0 A resolution at ESRF, Grenoble. The crystals belonged to a trigonal s...

Objectives. To establish a new method for determination of antioxidant capacity of human urine based on the redox couple I2/KI and to evaluate the redox status of healthy and diseased individuals. Methods. The method was based on the linear relationship between oxidation reduction potential (ORP) and logarithm of concentration ratio of I2/KI. ORP of a solution with a known concentration ratio o...