A new chelating sorbent was synthesized by covalently linking carbon nano-fiber with ion exchange polyurethane foam (CNF-PUFIX). CNF-PUFIX was characterized using different tools e.g. elemental analysis, IR spectrum and SEM. The functional groups of PUF have disappeared. The phenolic, carboxylic, quaternary ammonium salt and tertiary amine groups are detected in the CNF-PUFIX. The sorption prop...

UNLABELLED Chitosan is a biopolymer obtained by N-deacetylation of chitin, produced from shellfish waste, which may be employed to elaborate edible films or coatings to enhance shelf life of food products. This study was conducted to evaluate the effect of different concentrations of nanofiller (cellulose nanofibers, CNF) and plasticizer (glycerol) on tensile properties (tensile strength-TS, el...

This work aims to produce a 3D-printable bio-based filament composed of high-density polyethylene (HDPE) and chemically modified cellulose nanofibrils. Printing using HDPE as raw material is challenging due its massive shrinkage warping problems. paper presents new method overcome those difficulties by enhancing the mechanical properties achieving better print quality. was achieved nanofibrils ...

This paper presents a brief introduction to multi-objective genetic algorithms and FPGAs[4][8]. In this paper we have discussed that how test pattern generation method can be formulated in terms of CNF form [16]and this CNF form can be used to generate test patterns using genetic algorithm[20] We have proposed that by applying a multi-objective genetic algorithm on this CNF form we can increase...

This thesis broadly concerns the field of average case analysis, focusing on one of the most fundamental problems in computer science – satisfiability. Remarkable phenomenon occurring for k-CNF formulas is a phase transition in satisfiability. More precisely (yet rather informally), there exists a number d = d(k, n) such that almost all k-CNF formulas on n variables with m clauses such that m/n...

REU Program: 2017 Cornell NanoScale Science & Technology Facility International Research Experience for Undergraduates (CNF iREU) Program at the National Institute of Material Science (NIMS), Tsukuba, Ibaraki, Japan CNF iREU Principal Investigator and Mentors: Takashi Aizawa, Gabin Guélou, Takao Mori, National Institute of Materials Science, Tsukuba, Japan Primary Source of CNF iREU Funding: Na...

We give an exact deterministic algorithm for MAX-SAT. On input CNF formulas with constant clause density (the ratio of the number of clauses to the number of variables is a constant), this algorithm runs in O(c) time where c < 2 and n is the number of variables. Worst-case upper bounds for MAX-SAT less than O(2) were previously known only for k-CNF formulas and for CNF formulas with small claus...

Alginate blended with cellulose nanocrystals (CNC), nanofibers (CNF), and tri-carboxylate (TPC-CNF) prepared encapsulated in the form of microcapsules (bio-polymeric beads). The cellulosic nanomaterials that used this study were investigated as for wastewater treatment applications. Batch experiments performed to removal copper, lead, magnesium, iron from aqueous solutions by beads. effects sor...