نتایج جستجو برای: dme synthesis

تعداد نتایج: 410739  

Journal: :Transactions of the American Ophthalmological Society 2010
David J Browning

PURPOSE To estimate the short-term variability of macular thickness in eyes with refractory and regressed diabetic macular edema (DME). METHODS In this retrospective review of consecutive cases from a retina practice, optical coherence tomography (OCT) measurements of macular thickness were extracted from the clinical charts of patients with refractory DME and regressed DME. Variation in macu...

Journal: :Frontiers in chemical engineering 2023

In this work the continuous production of dimethyl ether (DME) by sorption-enhanced DME synthesis (SEDMES) technology has been demonstrated for first time with a multi-column test-rig. A single-pass carbon yield up to 95%, higher than ever reported before, achieved. The experiments have also shown that SEDMES can be operated at lower temperatures (220°C) previously reported. This allows tempera...

2006
Tomoya Tsuji Toshihiko Hiaki Mitsuo Namba

Recently, dimethyl ether (DME) has been paid much attention as a clean fuel. DME has many advantages as a substitute for liquefied petroleum gas (LPG). Sulfur oxides (SOx), and particulate matters (PM) are not produced at the combustion. Infrastructures and equipments for LPG can be used with slight improvements, because physical properties of DME are similar to those of light hydrocarbons, pro...

2003
J. D. MARSHALL

The kinetics of sterol synthesis and DNA synthesis in polyclonally activated, concanavalin A-stimulated spleen cell cultures were analyzed. Inhibition of DNA synthesis by 1-f-Darabinofuranosylcytosine (Ara-C) did not abrogate the formation of cytotoxic effector cells. However, inhibition of sterol synthesis by 25-hydroxycholesterol inhibited formation of cytotoxic effector cells as well as cell...

Journal: :Fuel Processing Technology 2022

The direct synthesis of dimethyl ether (DME) on bifunctional catalysts is highly attractive for valorizing CO2 and syngas derived from biomass gasification a key process to reduce greenhouse gas emissions. DME economy (conventionally based its use as fuel) arouses growing interest, in parallel with the development different routes conversion into hydrocarbons (fuels chemicals) H2 production. Th...

Journal: :Investigative ophthalmology & visual science 2017
Benjamin Guyon Emeric Elphege Mathieu Flores Anne-Sophie Gauthier Bernard Delbosc Maher Saleh

Purpose Photoreceptor loss has been suspected of being involved in incomplete visual recovery after diabetic macular edema (DME) resolution. Recent studies have shown that cone density in the perifoveal area could be estimated by in vivo measurements of the outer retinal reflectivity on optical coherence tomography (OCT). The main objective of this study was to assess the photoreceptor layer re...

Journal: :Catalysts 2022

The CO2 hydrogenation to dimethyl ether (DME) is a potentially promising process for efficiently utilizing as renewable and cheap carbon resource. Currently, the one-step heterogeneous catalytic conversion of value-added chemicals exhibits higher efficiency than photocatalytic or electrocatalytic routes. However, typical catalysts DME still suffer from deficient space–time yield stability in in...

Journal: :Dalton transactions 2014
Sean D Reilly Jessie L Brown Brian L Scott Andrew J Gaunt

The 1,2-dimethoxyethane (DME) solvento adducts of Np(iv) and Pu(iv) tetrachloride have been prepared and isolated in good and moderate yields, respectively, along with single-crystal structural determinations. These neutral molecules are expected to provide alternative synthetic pathways in the pursuit of non-aqueous and organometallic complexes.

2011
Tadanori Yanai Mitsuru Konno Yoshio Sato Hiroshi Oikawa Shinya Nozaki S. Nozaki

Dimethyl Ether (DME) has been attracting attention as an alternative fuel for diesel engines because it can be produced from various feed stocks and does not create smoke. On the other hand, a DME truck require a large volume fuel tank in order to obtain the running distance equivalent to diesel trucks due to the lower energy content per unit volume of DME, and un-burned gas and fuel consumptio...

2015
Nicolas Leveziel Stéphanie Ragot Elise Gand Olivier Lichtwitz Jean Michel Halimi Julien Gozlan Pierre Gourdy Marie-Françoise Robert Dured Dardari Michèle Boissonnot Ronan Roussel Xavier Piguel Olivier Dupuy Florence Torremocha Pierre-Jean Saulnier Richard Maréchaud Samy Hadjadj Turkcu. Fatih

Diabetic macular edema (DME) is the main cause of visual loss associated with diabetes but any association between DME and cardiovascular events is unclear.This study aims to describe the possible association between DME and cardiovascular events in a multicenter cross-sectional study of patients with type 2 diabetes.Two thousand eight hundred seven patients with type 2 diabetes were recruited ...

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