Authors:I. I. Cofaru, G. Husi, N. F. Cofaru, and M. D. Roman
The article is approaching an interesting topic regarding ACL reconstruction using the hamstring tendons (semitendinosus and gracilis) as the graft. The initial graft fixation after ACL reconstruction is mechanical and it must assure the stability of the system until the biologic integration takes place. No fixation system is as strong as the native ACL insertion. Therefore, hibrid fixation like an improvement of simple fixation is a field worth studying. The fixation shown in this article is the Hybrid fixation consisting of direct fixation with interference screw and an extra cortical fixation over a cortical screw.
Authors:Johannes J. C. Erasmus, Marrigje M. Conradie, and Jeanet Conradie
to the Monsanto catalyst [Rh(CO) 2 I 2 ] − , the complex accelerates the oxidative addition step by ca 300 times but inhibits the CO insertion step [ 19 ]. The reactivity of rhodium(I)-β-diketonato complexes is influenced by the electronic state of
Systems . Addison-Wesley series in electrical and computer engineering , 1989 . ISBN: 0-201-07570-9 .  O. Ruano , J. A. Maestro , and P. Reviriego , “ A methodology for automatic insertion of selective TMR in digital circuits affected by SEUs
Authors:Barhm Mohamad, Jalics Karoly, Andrei Zelentsov, and Salah Amroune
systems due to the highly unsteady flows in the pipes, originated by the periodic cylinder gas exchange process. The insertion loss and the transmission loss of the muffler are used to assess its performance. There are numerous publications available in
Authors:M. Mitterer-Daltoé, J. Latorres, R. Treptow, L. Pastous-Madureira, and M. Queiroz
The objective of this study was to evaluate the acceptance of breaded fish (Engraulis anchoita) by public school students aged 5–18 (n=830) from two cities in the state of Rio Grande do Sul, Brazil. First, by using multivariate analyses, the authors sought to assess the effect of the variables sex, city, and age on the acceptance of breaded fish. The second objective was to develop a predictive model that was applicable to different levels of acceptance. The results showed that the significant variable for the acceptance of breaded fish was age. According to the linear model and the descriptive statistics, an inverse relationship exists between the acceptance of breaded fish in school meals and the age of the children, possibly a consequence of the children being more critical in their food preference with the rising age, making the insertion of a new food that is not part of their eating behaviour more difficult.
Authors:Saeid Ahmadjo, Gholam Zohuri, Saman Damavandi, and Reza Sandaroos
Three FI-like Zr-based catalysts, Bis[1-[(phenylimino)methyl]-2-naphtholato]zirconium(IV) dichloride (1), Bis[1-[(mesitylimino)methyl]-2-naphtholato]zirconium(IV) dichloride (2) and Bis[1-[(2,6-diisopropylphenyl)imino]methyl-2-naphtholato]zirconium(IV) dichloride (3) were prepared by changing the ligand from salicylaldehyde imine ligand, which is a well known FI catalysts, to 2-hydroxynaphthalene-1-carbaldehyde
imine ligand and used for polymerization of ethylene. Triisobutylaluminum (TIBA) and methylaluminoxane (MAO) were used as
scavenger and cocatalyst, respectively. Introduction of the bulky substitution phenyl ring on the N of the phenoxy imine ligand
enhanced the viscosity average molecular weight of the obtained polymer strongly. Catalyst 3 produced the highest viscosity average molecular weight (Mv) of the obtained polyethylene, but showed the lowest catalytic activity. The activity of all the catalysts was increased
with the increase of [Al]/[Zr] molar ratio to an optimum value followed by a slight decrease at higher [Al]/[Zr] molar ratios.
Optimum activity of catalyst 1 was obtained at about 30 °C while the highest activity of catalysts 2 and 3 was obtained at about 40 °C following a sharp decrease at higher temperatures. The rate/time profile of the polymerization
decayed with a short acceleration period for all of the catalysts. The polymerization activity was increased with increasing
the hydrogen concentration due to the fast hydrogenation of sterically more hindered and less reactive intermediates such
as those resulting from 2,1-insertions. It is noteworthy that the experimental results indicated that the hydrogen does not
act as a chain transfer agent in the case of sterically hindered catalyst (3), while H2 can reduce the molecular weight of the polymer produced by the catalysts (1) and (2). The resulting polymer was characterized and the data for its physical properties are reported.
Authors:Seung-Ho Kwack, Myung-June Park, Jong Wook Bae, Kyoung-Su Ha, and Ki-Won Jun
to chain growth pathways; CH 2 insertion, CO insertion, and oxygenate (enol) mechanism. The CH 2 insertion mechanism [ 19 , 20 ] originally suggested by Fischer and Tropsch implies that C + C coupling is achieved through the polymerization of CH 2
Authors:Hiep Ngo, Yanyong Liu, and Kazuhisa Murata
hydrogenation and hence serves as a catalyst for producing methane; and the Rh catalyst has excellent CO insertion activity and hence serves as a catalyst for producing C 2 oxygenates. Fe improved the step of CO dissociation and thus increased the CO conversion