pectin is used as gelatinizing agent in food industry. in this study pectin was extracted from five commercial sugar beet varieties namely: doroty, rasul, 7112, br1 and ic using pre-hydrolysis technique. experiments were conducted using factorial design to verify the effect of temperature, time, percentage of hcl and water requirements on the extraction rate of pectin. the qualitative factors o...

We study Vand Λ-patterns which generalize valleys and peaks, as well as increasing and decreasing runs, in permutations. A complete classification of permutations (multi)-avoiding Vand Λ-patterns of length 4 is given. We also establish a connection between restricted permutations and matchings in the coronas of complete graphs.

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porous media has interesting features in compared with free flame combustion due to the extended of the lean flammability limits and lower emissions. advanced new generation of internal combustion (ic) engines are expected to have far better emissions levels both gaseous and particulate matter, at the same time having far lower fuel consumption on a wide range of operating condition. these crit...

In heuristic search and especially in optimal classical planning the computation of accurate heuristic values can take up the majority of runtime. In many cases, the heuristic computations for a search node and its successors are very similar, leading to significant duplication of effort. For example most landmarks of a node that are computed by the LM-cut algorithm are also landmarks for the n...

Motor stepper tidak sama dengan motor AC maupun DC konvensional yang berputar secara kontiniu,tetapi perputaran pada yaitu incremental atau langkah per ( step by ), sehingga dapat memberikan putaran lebih presisi dan akurat.Perancangan pembuatan system pengendali arah berbasis ICL293D sangat menarik untuk dipelajari.Dalam perancangan ini menggunakan metode eksperimen,sehingga dalam simulator di...