نتایج جستجو برای: ocm reaction
تعداد نتایج: 412763 فیلتر نتایج به سال:
The performance of the Mn-Na2WO4/SiO2 catalyst for oxidative coupling methane (OCM) has been ascribed to crystalline phases that are not present at reaction temperatures (>700 °C). evolution W and Mn sites structure was monitored via in situ TPO-XRD, -Raman, -XANES spectroscopies. TPO-XRD shows identified on Mn-Na2WO4/SiO2, Na2WO4/SiO2, WO3/SiO2 catalysts room temperature do exist relevant OCM ...
A plasma–catalyst hybrid system has been developed for the direct conversion of methane to C2+ hydrocarbons in dielectric barrier discharge (DBD) plasma. TiO2 presented highest yield 11.63% among different materials when integrated with DBD plasma, which made us concentrate on TiO2-based catalyst. It was demonstrated that MnTi catalyst showed best coupling performance 27.29% 150 V applied volta...
Unlike standard Model Reference Adaptive Control (MRAC), Optimal Control Modification (OCM) has been shown to be a promising MRAC modification with robustness and analytical properties not present in other adaptive control methods. This paper presents an analysis of the OCM method, and how the asymptotic property of OCM is useful for analyzing and tuning the controller. We begin with a Lyapunov...
Battery swapping mode (BSM) is an important method of supplying energy to electric vehicles, in which the battery swapping behavior of electric vehicle users affects significantly the charging behavior of the battery swapping station. To determine the impacts of a driver’s swapping behavior on the power grid and generation cost, this paper proposes an optimization charging mode (OCM) and simula...
BACKGROUND Partial nephrectomy (PN) may better protect against other-cause mortality (OCM) when compared with radical nephrectomy (RN) in patients with localized renal cell carcinoma (RCC). OBJECTIVE Test the effect of treatment type on OCM. DESIGN, SETTING, AND PARTICIPANTS Using the Surveillance Epidemiology and End Results-Medicare-linked database, 4956 RN patients (82%) and 1068 PN pati...
Oxidative coupling of methane and dehydroaromatization are attractive one-step conversion routes to make valuable platform chemicals more sustainable. Both processes require elevated temperatures above 600°C, good heat management, the use heterogeneous catalysts. None these reactions yet commercial due many technical challenges. This work explores potential combining two under one umbrella over...
Optical coherence microscopy (OCM) combines confocal microscopy and optical coherence tomography (OCT) to improve imaging depth and contrast, enabling cellular imaging in human tissues. We aim to investigate OCM for ex vivo imaging of upper and lower gastrointestinal tract tissues, to establish correlations between OCM imaging and histology, and to provide a baseline for future endoscopic studi...
INTRODUCTION The quality of delivered dialysis can be measured by the Kt/V ratio, which can be calculated in various ways. OBJECTIVE To compare the Kt/V ratio obtained with the formulas of Lowrie (L) and Daugirdas (D) with the results measured by an Online Clearance Monitor (OCM). METHOD Observational, cross-sectional study of 59 patients on hemodialysis (HD). Data were collected in the sam...
Male Drosophila are monosomic for the X chromosome, but survive due to dosage compensation. They use the Male Specific Lethal (MSL) complex composed of noncoding roX RNA and histone modifying enzymes to hypertranscribe most genes along the X ∼1.6-1.8 fold relative to each female allele. It is not known how the MSL complex achieves this precise adjustment to a large and diverse set of target gen...
Three-dimensional tissue cultures have been used as effective models for studying different diseases, including epilepsy. High-throughput, nondestructive techniques are essential for rapid assessment of disease-related processes, such as progressive cell death. An ultrahigh-resolution optical coherence microscopy (UHR-OCM) system with [Formula: see text] axial resolution and [Formula: see text]...
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