نتایج جستجو برای: ocm reaction
تعداد نتایج: 412763 فیلتر نتایج به سال:
اتیلن یکی از مهمترین محصولات صنایع پتروشیمی محسوب می شود که بعد از آمونیاک بیشترین تولید را در سطح جهان دارا می باشد .اتیلن اصلی ترین خوراک صنایع شیمیایی و در حال حاضر در بازار جهانی بیشترین مشتری را از بین مواد پتروشیمی داراست . روش های مختلفی برای تولید اتیلن وجود دارد که یکی از این روش ها، فرآیند جفت شدن اکسایشی متان(ocm) می باشد . هدف اصلی این فرآیند تولید اتیلن از متان است. تحقیق حاضر به م...
abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...
Ocean colour sensors are equipped with atmospheric correction bands operating in the near infrared region of spectrum. At these wavelengths, ocean surface, because high absorption by water, acts as a dark background and sensor detected radiance is due to solar radiation backscattered air molecules aerosols called Rayleigh aerosol path radiances respectively. From bands, after accounting for rad...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
The silver-catalyzed, oxidative coupling of methane to C2 hydrocarbons (OCM) is shown to be an extremely structure-sensitive reaction. Reaction-induced changes in the silver morphology lead to changes in the nature and extent of formation of various bulk and surface -terminating crystal structures. This, in-turn, impacts the adsorption properties and diffusivity of oxygen in silver which is nec...
PURPOSE Choroidal malignant melanomas (CMMs) are the most common primary intraocular tumors in adult humans. Although radiotherapy is commonly used to treat the melanomas, the therapeutic effects are unpredictable. The purpose of this study was to search for a gene(s) that can predict the success of radiotherapy for CMMs. METHODS The cell lines 92-1, OCM-1, and OMM-1 were established from pat...
Human uveal melanoma is the most common primary intraocular tumor, and brachytherapy is one of the most common and effective treatment strategies. In order to find a safer and more effective way to increase the radio sensitivity of the tumor, we tried to use the dendrimer nanoparticle performing coexpression gene radiotherapy. In this study, we constructed recombinant DNA plasmids (early growth...
Despite an improved understanding of cancer molecular biology, immune landscapes, and advancements in cytotoxic, biologic, and immunologic anti-cancer therapeutics, cancer remains a leading cause of death worldwide. More than 8.2 million deaths were attributed to cancer in 2012, and it is anticipated that cancer incidence will continue to rise, with 19.3 million cases expected by 2025. The deve...
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