Showing papers in "Advanced Powder Technology in 2007"

TL;DR: In this article, aqueous and ethylene glycol-based spherical titania nanofluids were used for forced convective heat transfer and they showed a higher effective thermal conductivity than that predicted by the conventional theories.

TL;DR: The results indicate that particle exposures in the presence of physiological stretch induce increased LDH release and IL-8 expression regardless of shape, and it is evident that shape-induced aggregation may play a significant role in mitigating particle clearance pathways.

TL;DR: In this paper, a multi-dimensional population balance (M-PB) model is proposed to estimate the growth rates of individual faces as a function of temporal operating conditions, e.g., supersaturation.

TL;DR: The focus of this review is to summarize the evolution of engineered Gd nanoparticles, from self-assembled macromolecular structures to rigid particulate systems for enhanced MRI contrast and, separately, Gd NCT therapy.

TL;DR: In this article, the shell wall structure of hollow particles was determined in detail by an analysis adsorption mechanism using the nitrogen ad-sorption isotherm, and the characteristics of the surface hydroxyl groups which react with surface modification reagents were then evaluated by water vapor adaption.

TL;DR: In this article, a system combining two different pipe materials was proposed depending on the particle-charging characteristics, and the charge controlled by this method was in good agreement with the theoretical calculation.

TL;DR: The influence of particle size on photoluminescence (PL) emission and time-resolved PL intensity decay from cubic and monoclinic Y2O3:Eu3+ nanoparticles was examined by annealing as mentioned in this paper.

TL;DR: In this article, a spray-drying fluidized bed granulator was used to form soft matrix composite granules, which were then dispersed in distilled water for inhaling dry powder powder with peptideloaded poly(DL-lactic-co-glycolic acid) nanospheres.

TL;DR: In this paper, the authors investigated the effect of microwave irradiation on the crystalline phase of zeolites synthesized from fly ash and clarified what process is intensively affected by the microwave irradiated.

TL;DR: In this article, asymmetric particles of NaCl and KCl were obtained by using a crystallization method using precipitation at the solution-1-butanol interface, where the two solvents are essentially immiscible, but have slight mutual diffusion.

TL;DR: In this article, the authors discuss how judicious choice and development of imaging technique applied to various different granular systems can provide us with valuable new data on the processes occurring in granular flows.

TL;DR: In this article, a rule of cell optimization for fast contact detection in the discrete element method (DEM) algorithm was found. But the authors did not consider the effect of the size of the larger cell on the contact detection speed.

TL;DR: In this article, the behavior of a particular sacrificial material and its effect on turbine blade wear under operating conditions was investigated in the abradability test rig of a gas turbine.

TL;DR: In this paper, the degradation of polyphenylene sulfide (PPS) nonwoven fabrics in the presence of acid gases was investigated and it was shown that crosslinking and branching dominate around 250°C, leading to the embrittlement of PPS bag-filter materials and severe strength loss.

TL;DR: In this article, the effect of the friction coefficient in the discrete element method (DEM) simulation on bead motion in the mill was investigated, and the results showed that the coefficient between bead and bead, μi and μw are 0.2 and 0.25, respectively.

TL;DR: In this paper, the effects of initial moisture content, temperature and flow rate of the heating medium, and solid circulation rate on rate of drying, have been critically examined, and it has been observed that the solids material used in the present investigation exhibits a falling rate period.

TL;DR: In this paper, a simulation algorithm was developed for the modeling of packing of large assemblies of particulate materials (of the order of millions), which can represent the real aggregate systems composing portland cement concrete.

TL;DR: In this paper, pyrolysis of woody biomass was studied experimentally with the aim of investigating heat transfer and heterogeneous chemical reactions in rapid and slow pyrolyses.

TL;DR: In this article, a gas sensor was fabricated using single-walled carbon nanohorns (SWNHs) produced by the gas-injected arc-in-water method.

TL;DR: In this paper, the authors review some recent developments where atomic force microscopy (AFM) probes and opposing surfaces have been modified to enable the direct measurement of nanoparticle interactions.

TL;DR: In this article, the effect of the grinding of talc on the polymerization of the styrene was investigated by characterizing the polymer formed and talc ground, and the results revealed that of all the experiments we have performed thus far, styrene most abundantly polymerized by ground talc.

TL;DR: The anion-exchange resin is most effective in immobilizing M. barkeri within the fermenter, while coagulated cells adhered non-uniformly to the hydrophobic resin and M. barkingeri showed poor adhesion to the cation-ex exchange resin.

TL;DR: In this article, a tubular reactor with a T-mixer was applied to the production of nanometer-to-micrometer particles of several kinds of inorganic salts, which enabled good monodispersity and high yield simultaneously.

TL;DR: In this article, compacts were produced from sorbitol granules using two distinctively different particle size fractions, two compaction speeds and a range of different tablet porosities.

TL;DR: In this paper, mesoporous silicates MCM-41 and SBA-15 were investigated for their potential as metal ion-selective adsorbents using acetylacetone (Hacac) as a chelating agent.

TL;DR: In this paper, the rates of rehydroxylation and re-oxylation reactions on silica surfaces preheated at various temperatures were investigated and the effect of preheating temperature was examined for both reactions.

TL;DR: In this paper, numerical simulations based on a two-dimensional two-phase lattice Boltzmann method have been performed to examine two types of capillary forces: (i) the lateral capillary force between two horizontal cylinders of wetting and/or non-wetting surfaces trapped at a liquid-vapor interface, and (ii) the capillary bridge force between the two wetting cylinders covered with liquid films in vapor.

TL;DR: In this paper, the theory of powder metallurgy (PM) materials in cold and hot forming, and its application to computer modeling of powder technology processes is presented, both a review and a research article.

TL;DR: In this paper, the effect of velocity field of two different scales of high shear mixer granulator (1 and 5 l) on the structure of the evolved agglomerates is analyzed.