Development Automobile Engine Hood Latch

V diplomové práci se zabývá konstrukčním návrhem automobilového zámku, který má hlavní komponenty v „plastovém“ provedení (rohatka, západka, tělesa). Tyto plastové díly jsem vhodně navrhl a optimalizoval na požadované zatížení. Zároveň srovnávám plastový zámek a ocelový zámek přední kapoty, srovnávám jak cenu zámků, tak hmotnost a zatížení zámků. V krátkosti porovnávám automobilové zámky přední kapoty v současném automobilovém průmyslu. Také se zabývám etapou výroby prototypového vzorku v současnosti.The diploma thesis deals with the design of the car lock, which main components such as claw, pawl and housing are made of plastic. My main goal was to optimized these plastic parts for a certain amount of power. The following part shows a comparison of plastic lock and the steel lock of front bonnet. The following part shows a comparison of the plastic lock and the steel lock of the front bonnet. The comparison is made in terms of the price, weight and load of the locks. The diploma thesis also briefly deals with the comparison of car locks of car locks of front bonnets in the current automotive industry and the stage of prototype sample production nowadays.340 - Katedra výrobních strojů a konstruovánívelmi dobř

Highly Efficient Photocatalytic Hydrogen Production over PdS@CdS+ZnS(en)_0.5 Photocatalyst under Visible Light Irradiation

A new photocatalyst, CdS+ZnS­(en)_0.5 (Cd/Zn = 6:4), was prepared by a simple mechanical mixing method and characterized by various techniques including X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and UV–vis diffuse reflectance spectroscopy. The photocatalytic activity of CdS+ZnS­(en)_0.5 was evaluated for hydrogen production from an aqueous solution under visible light. PdS-loaded CdS+ZnS­(en)_0.5 exhibited an efficient H₂ production rate of 2600 μmol h^–1 g^–1, which was higher than that observed with PdS-loaded CdS and Cd_0.6Zn_0.4S solid solution catalysts. The apparent quantum yield at 405 nm was 23%. Furthermore, PdS@CdS+ZnS­(en)_0.5 showed good stability for prolonged H₂ production reactions. It was proposed that enhancement of hole and electron transfer by PdS and ZnS­(en)_0.5 contributed to the high activity of this photocatalyst for H₂ production

Highly Efficient Photocatalytic Activity of g‑C₃N₄/Ag₃PO₄ Hybrid Photocatalysts through Z‑Scheme Photocatalytic Mechanism under Visible Light

Highly efficient visible-light-driven g-C₃N₄/Ag₃PO₄ hybrid photocatalysts with different weight ratios of g-C₃N₄ were prepared by a facile in situ precipitation method and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectrometry and UV–vis diffuse reflectance spectroscopy. Under visible-light irradiation (>440 nm), g-C₃N₄/Ag₃PO₄ photocatalysts displayed the higher photocatalytic activity than pure g-C₃N₄ and Ag₃PO₄ for the decolorization of methyl orange (MO). Among the hybrid photocatalysts, g-C₃N₄/Ag₃PO₄ with 25 wt % of g-C₃N₄ exhibited the highest photocatalytic activity for the decolorization of MO. The complete decolorization of MO was achieved for only 5 min of visible-light irradiation. X-ray photoelectron spectroscopy results revealed that metallic Ag particles on the surface of g-C₃N₄/Ag₃PO₄ hybrid were formed during the catalysts preparation. In addition, the quenching effects of different scavengers displayed that the reactive h⁺ and O₂^•– play the major role in the MO decolorization. The photocatalytic activity enhancement of g-C₃N₄/Ag₃PO₄ hybrid photocatalysts could be ascribed to the efficient separation of electron–hole pairs through a Z-scheme system composed of Ag₃PO₄, Ag and g-C₃N₄, in which Ag particles act as the charge separation center. The evidence of the Z-scheme photocatalytic mechanism of the hybrid photocatalysts could be obtained from a photoluminescence technique

Phylogenic tree for 119 PEDV strains and identified motifs.

<p>(A) Phylogenetic tree based on the genomes of 119 PEDV strains isolated in 2013–2014. Phylogenetic analysis was performed using a maximum-likelihood method with general time reversible nucleotide substitution model and with a bootstrap test using 1000 replicates in the MEGA6 program. Notations on the very left side represent the clades shown by Vlasova et al. (9). (B) The presence of sequence motifs in each strain. (C) Color chart of nucleotides in the sites having inconsistencies within the 119 PEDV strains. Nucleotides in agreement with the sequence of Indiana12.83/USA/2013 are colored with respect to the type of nucleotide (a: red, t: blue, c: green, and g: yellow). To increase the discriminability of motifs, nucleotides in sites with only one inconsistent strain were not colored.</p

Negligible “Negative Space-Charge Layer Effects” at Oxide-Electrolyte/Electrode Interfaces of Thin-Film Batteries

In this paper, we report the surprisingly low electrolyte/electrode interface resistance of 8.6 Ω cm² observed in thin-film batteries. This value is an order of magnitude smaller than that presented in previous reports on all-solid-state lithium batteries. The value is also smaller than that found in a liquid electrolyte-based batteries. The low interface resistance indicates that the negative space-charge layer effects at the Li₃PO_4–<i>x</i>N_<i>x</i>/LiCoO₂ interface are negligible and demonstrates that it is possible to fabricate all-solid state batteries with faster charging/discharging properties