A new thermally conductive polyimide composite film has been developed. It is based on a dispersion of different particle sizes of boron nitride (BN) in a polyimide (PI) precursor, polyamic acid (PAA). Subsequently, thermal imidization of PAA at 350 degrees C produced the corresponding polyimide composites. 3-Mercaptopropionic acid was used as the surfactant to modify the BN surface for the dis...

There is a developing interest in efficient materials automobile and aerospace fields that involves the improvement of metal matrix composites (MMCs) with great properties which incorporate higher strength, hardness stiffness, better wear destructive resistance along thermal properties. This work deals evaluation mechanical newly developed hybrid MMC Al 5059/B4C/Al2O3 produced by stir casting m...

In this research study, the mechanical properties of several Polymer matrix composites are investigated. These multi-phase materials in which reinforcing properly mixed with a polymer matrix. More precisely, Nylon 6 reinforced 5, 15 and 25 wt. % silicon carbide (SiC) boron (B4C), prepared by means an injection moulding process at three different pressures considered. Specific attention is paid ...

In recent years, the number of studies investigating new directions in speech modeling that goes beyond the conventional HMM has increased considerably. One promising approach is to use Bayesian Networks (BN) as speech models. Full recognition systems based on Dynamic BN as well as acoustic models using BN have been proposed lately. Our group at ATR has been developing a hybrid HMM/BN model, wh...

The finding of an incompetent bladder neck (BN) at the time of posterior urethroplasty will necessarily exacerbate the already difficult situation. In such cases the aim of the treatment is not only to restore urethral continuity by end-to-end urethral anastomosis, but also to restore the function of the BN to maintain urinary continence. Fortunately, the incidence of incompetence of the BN at ...

Public health interventions are needed to reduce stigma towards bulimia nervosa (BN) to enhance appropriate treatment seeking. This study aimed to evaluate persuasiveness of health messages designed to increase mental health literacy about BN. A community sample of adults (N = 2092) completed self-report measures of knowledge about BN, stigma towards BN and ratings of persuasiveness of health m...

BACKGROUND There are few reports that describe the manifestation of bulimia nervosa (BN) among adolescents. Moreover, none make reference to the comparative clinical manifestation of adolescent BN and adolescent anorexia nervosa. Nor are any reports available of how distinct partial-syndrome BN cases are from those that meet full diagnostic criteria for BN. OBJECTIVES To describe 3 groups of ...

Abstract Two ferrocene‐based NHCs of the type fc[(NR) 2 C:] ( 1 R ; fc=1,1’‐ferrocenylene) containing benzylic N ‐substituents were synthesised from corresponding formamidinium compounds H[BF 4 ] by reaction with LiN(SiMe 3 ) . In case R=CH Ph (Bn), carbene was characterised through trapping reactions sulfur and selenium, which afforded fc[(NBn) CS] Bn S) CSe] Se), respectively. A thermally sta...