نتایج جستجو برای: cracking chemical

تعداد نتایج: 388164  

2017
Pamela S. Williams John A. Chester

This project examines the nature of password cracking and modern applications. Several applications for different platforms are studied. Different methods of cracking are explained, including dictionary attack, brute force, and rainbow tables. Password cracking across different mediums is examined. Hashing and how it affects password cracking is discussed. An implementation of two hash-based pa...

Journal: :journal of nanostructures 2013
a. nemati kharat r. zafari

current article describes application of zeolites in fluid catalytic cracking (fcc). the use of several zeolitic additives for the production light olefins and reduction of pollutants is described. application of zeolites as fluid catalytic cracking (fcc) catalysts and additives due to the presence of active acid sites in the zeolite framework  increase the formation of desired cracking product...

2003
Y. Lin J. J. Vlassak T. Y. Tsui A. J. McKerrow

Understanding subcritical fracture of low-k dielectric materials and barrier thin films in buffered solutions of different pH value is of both technical and scientific importance. Subcritical delamination of dielectric and metal barrier films from low-k organosilicate glass (OSG) films in pH buffer solutions was studied in this work. Crack path and subcritical fracture behavior of OSG depends o...

2007
H. de Lasa

Manuscript for the special IECR issue CREVIII conference held in Barga, Italy on June 24-29, 2001 Catalytic Cracking of Cumene in a Riser Simulator A catalyst activity decay model S.Al-Khattaf (2) and H. de Lasa (1.*) (1) Chemical Reactor Engineering Centre, Faculty of Engineering Science, University of Western Ontario, London, Ontario, Canada N6A 5B9 (2) Department of Chemical Engineering, Kin...

Journal: :Waste management 2011
A Salmiaton A A Garforth

Waste plastics contain a substantial number of valuable chemicals. The wastes from post-consumer as well as from industrial production can be recycled to valuable chemical feedstock, which can be used in refineries and/or petrochemical industries. This chemical recycling process is an ideal approach in recycling the waste for a better environment. Polymer cracking using a laboratory fluidized b...

Journal: :CoRR 2013
Meenesh Bhardwaj

Variant Stochastic cracking is a significantly more resilient approach to adaptive indexing. It showed [1]that Stochastic cracking uses each query as a hint on how to reorganize data, but not blindly so; it gains resilience and avoids performance bottlenecks by deliberately applying certain arbitrary choices in its decision making. Therefore bring, adaptive indexing forward to a mature formulat...

2006
K. A. Mahgoub S. Al-Khattaf

_____________________________________________________________ Different catalysts based on Y-zeolite, ZSM-5 and amorphous kaolin were prepared and characterized. The catalytic cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPB), 1,4diisopropylbenzene (1,4-DIPB) and n-dodecane were used to investigate the effect of catalyst nature on the catalytic performance. Cracking the largest molecule (1,3,5...

2009
M. Hanafy

The varestraint cracking test was carried out to assess the hot cracking tendency of alloy 800 at different welding conditions and augmented strain levels. The test results revealed that the hot cracking susceptibility of alloy 800 increases with increasing the heat input and augmented strain levels. This emphasizes the role of constraint either internally induced or externally applied to the w...

2017
Sunghwan Kim Halil Ceylan Kasthurirangan Gopalakrishnan

In support of the initiatives for implementing the new MechanisticEmpirical Pavement Design Guide (MEPDG) in Iowa, a preliminary sensitivity study was undertaken to assess the comparative effect of design input parameters pertaining to material properties, traffic and climate on performance of two existing flexible pavements in Iowa with relatively thick Asphalt Concrete (AC) layers. A total of...

Journal: :international journal of civil engineering 0
m. s. lee hanyang university, erica campus, 1271 sa-3-dong, sangrok-gu, ansan, gyunggi-do 426-791, korea(r) t. s. seo dankook university, 126 jukjeon-dong, suji-gu, yongin-si, gyeonggi-do, republic of korea, 448-701

because thin plate reinforced concrete members such as walls and slabs are greatly influenced by the drying shrinkage, cracks can occur in these members due to the restraint of the volume change caused by drying shrinkage. therefore, the control of cracking due to drying shrinkage is very important in building construction that the thin plate members are frequently used. however, few researches...

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