نتایج جستجو برای: zeolite a

تعداد نتایج: 13436344  

2015
Zoran Ristanović Jan P. Hofmann Gert De Cremer Alexey V. Kubarev Marcus Rohnke Florian Meirer Johan Hofkens Maarten B. J. Roeffaers Bert M. Weckhuysen

Optimizing the number, distribution, and accessibility of Brønsted acid sites in zeolite-based catalysts is of a paramount importance to further improve their catalytic performance. However, it remains challenging to measure real-time changes in reactivity of single zeolite catalyst particles by ensemble-averaging characterization methods. In this work, a detailed 3D single molecule, single tur...

Journal: :jundishapur journal of health sciences 0
mehdi vosoughi niri department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9386939465, fax: +98-6133721675 amir hosein mahvi department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; national institute of health research, tehran university of medical sciences, tehran, ir iran mohammad javad mohammadi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; razi hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran afshin takdastan department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran amir zahedi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran bayram hashemzadeh department of environmental health, khoy school of nursing and public health, urumia university of medical sciences, urumia, ir iran

results the batch kinetics experiments showed that nom adsorption by the adsorbents followed the pseudo-second order model. results showed that the acidic ph is optimum for adsorption of nom by smz. conclusions the findings of this study show that natural zeolite modified with sodium dodecyl sulfate, as a cationic surfactant, is a promising adsorbent for removal of nom. materials and methods in...

2013
J. Kim A Koniges R. Martin M. Haranczyk J. Swisher B. Smit

In order to reduce the current costs associated with carbon capture technologies, novel materials such as zeolites and metal-organic frameworks that are based on microporous networks are being studied. We have developed a GPU code that can characterize and screen a large database of zeolite structures and help identify the most e cient structures for carbon capture. The interactions between the...

Journal: :علوم دامی 0
محمد حامد صفری دانش آموخته کارشناسی ارشد، گروه تغذیه دام و طیور، دانشگاه علوم کشاورزی و منابع طبیعی گرگان محمود شمس شرق دانشیار گروه تغذیه دام و طیور، دانشگاه علوم کشاورزی و منابع طبیعی گرگان آرش امینی استادیار گروه زمین شناسی، دانشگاه گلستان احمد طاطار استادیار گروه علوم دامی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان

an experiment with 300 one-day old ross male broiler chicks was conducted to determine the effects of glauconite and zeolite on the broiler's performance, tibia bone and blood characteristics. five experimental treatments [control, glauconite (2 & 4 percent), and zeolite (2 & 4 percent)] were used in a completely randomized design with 4 replicates. during the experiment weight gain, feed ...

2011
Jasna Hrenović Alenka Tofant Mario Ostović Dinka Milić

The aim of this study was to determine the effect of natural zeolite (commercial preparation with 80% of clinoptilolite) on counts of different physiological groups of bacteria i.e. sulfide-producing, faecal and total coliform, mesophilic aerobic and anaerobic, and thermophilic bacteria in pig slurry. Zeolite was spread daily directly over partially slatted floor in a dose of 0.4 kg/1 m 2 durin...

2008
Shujiang Yang Mohammed Lach-hab Iosif I. Vaisman Estela Blaisten-Barojas

—A machine learning approach is applied to classify zeolite crystals according to their framework type. The Zeolite-Structure-Predictor is introduced based on the Random Forest algorithm. Zeolites structural data from the Inorganic Crystal Structure Database (ICSD) are used to train the model. The ZSP uses sixteen attributes including topological descriptors obtained with statistical geometry a...

Journal: :Magnetic resonance imaging 2005
Sergey Vasenkov Jörg Kärger

Owing to the recent progress in the area of hardware and software of the pulsed field gradient NMR technique, molecular transport in real-life zeolite systems, such as zeolite beds and particles of formulated fluid catalytic cracking (FCC) catalysts, can be investigated in detail. These studies have revealed a number of important features of molecular transport in zeolites, which are reviewed i...

Journal: :تولیدات دامی 0
نسترن شاه ابراهیمی دانش آموخته کارشناسی ارشد فیزیولوژی دام، گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع-طبیعی رامین خوزستان، ملاثانی، ایران خلیل میرزاده استادیار گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران مرتضی مموئی استاد گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران احمد طاطار استادیار گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران محمد حجتی استادیار گروه علوم و صنایع غذایی، دانشکده علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران

effect of natural zeolites and nano-zeolite on gut flora, tibia bone characteristics, blood parameters and performance of broilers investigated with 336 male ross 308 broilers chicks allocated to   seven treatments with four replicates and 12 chicks per each. experimental treatments were control (no zeolite supplemented), natural zeolite (0.5, 1 and 1.5 percent) and nano-zeolite (0.5, 1 and 1.5...

2016
S. - Q. Zheng L. - J. He S. Ren H. - X. Yu J. - C. Zhang

A novel utilization method of filter residue from the preparation process of zeolite-based catalysts was investigated. Y zeolite and a fluid catalytic cracking (FCC) catalyst were synthesized from filter residue. Compared to the Y zeolite synthesized by the conventional method, the Y zeolite synthesized from filter residue exhibited better thermal stability. The catalyst possessed wide-pore dis...

2015
Byoung Chul Kim Takuji Yamamoto Young Han Kim

A quartz crystal microbalance (QCM) was utilized to measure the water content in ethanol. For the improvement of measurement sensitivity, the QCM was modified by applying zeolite particles on the surface with poly(methyl methacrylate) (PMMA) binder. The measurement performance was examined with ethanol of 1% to 5% water content in circulation. The experimental results showed that the frequency ...

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