CAD Skills | Stainless Steel Sintered Filter Disc

“It’s a very complex engine, and it was very difficult to form all the cooling channels, the injector head, and the throttling mechanism. Being able to print very high strength advanced alloys, I think, was crucial to being able to create the SuperDraco engine as it is.”

Now that the process has been validated and the parts have met Airbus Defence and Space’s standards, the company can consider the return on investment (ROI) potential for 3D metal printing from faster turnaround time, reduced production costs, and weight reduction of 50%.

Fig. S8. Comparison of O-K edge from Co oxide particles of fresh and nine-times-used Co@Chitosan-700 showing the difference in edge fine structure.

Schroeder, R., Majewski, L. A. & Grell, M. All-Organic permanent memory transistor using an amorphous, spin-cast ferroelectric-like gate insulator. Adv. Mater. 16, 633–636 (2004).

Their prototype, presented February 7 in the journal Chem, purified pathogen-rich water in 30 min, killing over 99.9999% of bacteria, such as E. coli, meeting China’s requirements for clean drinking water. Unlike metal-based photocatalytic disinfectants, it achieved this standard without leaving behind secondary pollution or heavy-metal-ion residues, offering a promising alternative to less eco-friendly technologies.

fig. S4. A cross-sectional SEM image of the MXene multilayer prepared by spray-assisted LbL assembly on glass.

The above results demonstrate the suppression of CO adsorption and accompanying electron transfer from TiO2 to Au after reduction at elevated temperatures (especially 500°C). This loss of CO adsorption capacity does not originate from a dispersion change, is reversible (most likely arising from the encapsulation of Au NPs by a thin overlayer of TiO2 support), and has never been reported previously (32, 33, 36), except under long-term electron irradiation in an environmental TEM (52). Potential gold encapsulation was therefore explored through HRTEM, as shown in Fig. 3. As expected, Au NPs in the RR2Ti-fresh samples were naked, but were covered with a thin layer of low-contrast material following subsequent reduction, where the overlayer coverage/thickness was proportional to the reduction temperature. For samples reduced at 200° and 300°C, naked and covered Au NPs coexist (Fig. 3, B and C, and corresponding insets), whereas for RR2Ti-H400 and RR2Ti-H500 samples, only encapsulated Au NPs were observed. Hence, in accordance with DRIFTS, we propose that all Au NPs in RR2Ti-H500 were completely encapsulated, and for RR2Ti-H400, either a small proportion of Au was not fully encapsulated or the encapsulating titania overlayer was not crystalline and remained gas-permeable (53). According to a classical SMSI, this overlayer would comprise TiOx species (with x < 2) (10, 54). The nature of the overlayer in RR2Ti-H500 was therefore probed by electron energy loss spectroscopy (EELS). Figure 3G and fig. S4 reveal clear Ti L-edge signals for all measured Au NPs, proving their coverage by a Ti-containing coating. Spectral fitting of Fig. 3G (shown in fig. S5) revealed the presence of two chemically distinct Ti species: those on the support (region III) characteristic of Ti4+ and those on Au NPs (region II) characteristic of Ti3+ species, consistent with recent reports (21, 53). In the case of the reoxidized RR2Ti-(H500+O400) sample (where CO chemisorption was restored), the thin overlayer has retreated, although not completely (Fig. 3F and fig. S6), in line with previous reports of classical SMSI for PGM catalysts (55–58).

de Rezende, M. L. et al. Bone demineralization with citric acid enhances adhesion and spreading of preosteoblasts. J. Periodontol. 86, 146–154 (2015).

Hishiki, T. et al. Src kinase family inhibitor PP2 induces aggregation and detachment of neuroblastoma cells and inhibits cell growth in a PI3 kinase/Akt pathway-independent manner. Pediatr. Surg. Int. 27, 225–230 (2011).

Regional mapping of liquid spreading within the three layers was examined. It can help to visualise the distribution of water and the water content of each layer. Detailed information could be obtained at a glance. Additionally, two mapping methods were proposed for graphically representing the water transport properties in both directions and its relation to skin wetness. These can be used for ease of comparison between a large group of fabrics.

Fins have this concept called Sisu. Sisu is a kind of hail mary pass, fatalistic almost, belief in one’s own toughness, resilience and survivability in the face of adversity. It’s kind of a gritty gumption with a side of never give up. Its this inner strength that shines through in what Minifactory does. Minifactory is a small but dedicated team of 3D printer builders in Finland. They’ve got Susi in spades. Often confused with MyMinifactory this one is not a download site but a builder of some of the world’s best high-temperature printers. The team is now releasing the Minifactory Ultra.

Both substrates were hydrogenated to the corresponding products stearic acid (2ba) and tristearin (2bb) in good to very good yields. Tristearin is generally recognized as safe (GRAS) food additive (53). It has many applications, for instance, as hardening agent in the manufacture of soap and candles. The fact that the degree of hydrogenation is lower for oleic acid than for triolein might be due to coordination of the acid functionality to cobalt on the catalyst surface. This would be consistent with the yield for the carboxylic acid 2a (Scheme 2), which was comparable (69%). Furthermore, in the case of 2ba, the reaction solution became slightly pinkish, indicating complexation of cobalt. This was not the case for the triglyceride.