نتایج جستجو برای: راکتور بالارونده fcc
تعداد نتایج: 7184 فیلتر نتایج به سال:
در این پژوهش، طراحی و ساخت نانوکاتالیست zsm-5 برای ساخت کاتالیست fcc و rfcc برای اولین بار در ایران مورد بررسی قرار گرفته است که تعیین شرایط بهینه برای تولید زئولیت zsm-5 در رسیدن به این هدف، از جایگاه ویژه ای برخوردار است. به این منظور، تحت شرایط بهینه شده فرایند، جهت تشکیل کریستال نانو زئولیت zsm-5، تعداد 42 نمونه زئولیت zsm-5 سنتز شد. نمونه ها در شرایط مختلف فرایند مانند ph ژل(5/11-9)، دمای...
یکی از مراحل مهم پردازش داده های VSP ، تفکیک امواج پایین رونده از امواج بالارونده است. در این مقاله، دو روش f-k و-p برای تفکیک امواج پایین رونده در داده های VSP مصنوعی و واقعی مورد بررسی قرار می گیرد. امواج پایین رونده دارای سرعت و کندی ظاهری منفی اند. بنابراین ، با استفاده از تبدیل فوریه دو بعدی داده های VSP ( در حیطه f-k) و یا با استفاده از تبدیل رادون ( در حیطه -p ) می توان آنها را از هم...
To reveal the origin of the CO oxidation activity of Ruthenium nanoparticles (Ru NPs), we structurally characterized Ru NPs through Rietveld refinement analysis of high-energy X-ray diffraction data. For hexagonal close-packed (hcp) Ru NPs, the CO oxidation activity decreased with decreasing domain surface area. However, for face-centered cubic (fcc) Ru NPs, the CO oxidation activity became str...
In this study, we report intramolecular charge transfer (ICT) properties and charge distributions in a series of FcC derivatives (FcC = 4-ferrocenylcatecholate where Fc = ferrocene and C = catecholate). This series consists of a previously reported complex FcV (4-ferrocenylveratrole) and newly synthesized complexes FcA (4-ferrocenylcatechol bis(acetate) and Pt((t)Bu2bpy)(FcC) ((t)Bu2bpy = 4,4'-...
Ultra-wideband (UWB) radio is a transmission technology that is based on short pulses, whose spectral width is on the order of several GHz. UWB signals are free of sine-wave carriers, and their duty cycle and power spectral density are low. These characteristics provide UWB radio with unique advantages: improved immunity to multi-path fading, increased ranging resolution, large tolerance to int...
OBJECTIVE Family-centered care (FCC) has been related to positive healthcare outcomes in pediatric care. Our aim was to assess whether an FCC approach also leads to better and earlier identification of social-emotional problems and less child psychosocial problems at age 18 months. METHODS In a quasi-experimental study within routine well-child care in the Netherlands, we compared those regio...
In this paper, fuzzy logic control of a fluid catalytic cracking unit (FCCU) is proposed. Fluid catalytic cracking (FCC) process is a unit that converts heavy distillates like gas oil or residues to gasoline and middle distillates using cracking catalyst. About 45% of worldwide gasoline production comes from FCC processes and its ancillary units. Since a typical FCC unit can process a large amo...
Fe,,,Ni, with xs30 at.%, known as anti-Invar alloys, undergo mprtensitic transformations. Total energy calculations have shown that these alloys incorporate a strongly fluctuating magnetic moment in the fcc state. In order to undeixtand the relationship between the moment fluctuations and the martensitic transformation, we have investigated the magnetic moment in the paramagnetic fcc state of t...
Marinobacter sp. strain CAB was cultivated with or without porous glass beads as solid support. Two substrates were used: the hydrophilic sodium lactate and a hydrophobic C(18)-isoprenoid ketone (6,10,14-trimethylpentadecan-2-one (TMP)). The substrate adsorption onto the beads was measured. Bacterial adhesion was determined by a direct count technique and amounted to 70% of total cells. In the ...
Family-Centered Care (FCC) is a way to provide health care that recognizes the importance of family for a hospitalized child. According to it, it is essential to involve families in their children’s recovery plan [1]. FCC was born in the Fifties of 20th century as a reaction to the leading idea in Pediatric care that emphasized physical care, technical abilities and emotional detachment and con...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید