February 26, TED conference held in California, USA, MIT Automation Laboratory founder Skylar Tibbits introduced the team's new technology - 4 D printing. Compared with 3D printing, the fourth D (dimension) refers to time. That is, the use of the original 3D printing technology, based on the print material itself will change along with the shape of the shape. 4D the key is the material Automated deformable materials developed at MIT are more high-tech. It is like robots with self-awareness. After the scientists have modeled and set the time through the software, the deformable material will automatically deform to the desired shape at a given time. Video, a multi-string PVC composite tube in the water to complete the automatic deformation, the process does not use the printing machine. It is reported that the composite material used in the demonstration video is provided by the US technology company Objet Connex. According to public sources, Objet Connex, which specializes in 3D printing, features 3D printers that process light-sensitive resins, enabling 3D printers to print on a single printout of 14 different materials. PVC paste resin is the photosensitive resin raw materials, PVC paste resin production of A-share listed companies British force in the interactive platform that, in theory, PVC paste resin can be used as 3D printing supplies, if there are companies engaged in 3D printing production business , The existing technology can process the PVC paste resin into a photosensitive resin. Proof of chlor-alkali chemical also said that as PVC paste resin widely used, do not rule out the 3D printing supplies can not be excluded. 4D material and memory metal different The performance of composite materials in 4D print video looks a little similar to memory metal, but it's totally different. From the introduction of the project, it was discovered that the composite material was programmed and simulated by Cyborg, a new software developed by Autodesk. (Tibbits also presented Ted's speech. The second part also showed that the material is automatically deformed by shaking in the air, using the same Of the composite material) so that the material deforms in the shape of a pre-set time, according to Tibbits: let the object be made automatically, like a machine, instead of setting the object first and then remanufacturing. Memories, on the other hand, are returned to their original shape under certain external conditions, ie objects have been set, not manufactured. Based on Objet Connex 3D printing performance, Tibbits 4D printing is used to complete the 3D modeling of materials through the print, while the process of resin brush or chip changes in the shape of the material to achieve the purpose of complete deformation . A large number of new drugs approved Since the Spring Festival, the US stock market is generally flat. Of the stocks with a market capitalization of more than $ 10 million last week, only 17 rose more than 20% in a week. If only 7 stocks rose more than 20% if they were asked to raise their stocks to more than $ 100 million, This situation has been rare since the Dow started its rally in mid-November. Among the 17 stocks, the highest-gaining individual was Chelsea Medical, whose share price soared 113.92% last week after core drugs were submitted for approval again by the U.S. Food and Drug Administration with approval in writing. However, since Chelsea Medical has been a low-priced stock, Times only after the $ 1.69. The company approved the drug, Northera, for the treatment of neurogenic orthostatic hypotension (NOH) caused by Parkinson's disease. Like many low-cost US pharmaceutical stocks, Chelsea Medical's entire assets are concentrated on Northera, and the company does not have any other products except the drug. It is worth noting that the U.S. Food and Drug Administration has significantly accelerated the approval of new drugs since last year. In 2012, a total of 39 new drugs were approved and the number of approvals was 30% more than in 2011 while setting a record of 15 years new highs. This also led the US stock biopharmaceutical ETF rose more than 20% last year, outperforming the broader market. This is undoubtedly good news for Chinese generic drug companies that work with big and small pharmaceutical companies in the United States. Communications sector eventually led the rise Plate, the United States last week, a plate in the primary market, only the telecommunications sector recorded a rise of 0.70%, utilities and retail sector rose last week ranked 23rd after the relative decline this week, fell 0.47 % And 1.30%. The rise of the communications sector that led the Wall Street stocks since 2013 is about the expected World Mobile Communications Congress in Barcelona, ​​Spain, February 25th. However, since the current session, there is no market capitalization of the larger US stocks due to product or concept of the popular stock prices rose, only the Pulse Electronic family rose 37.93% due to the 4G antenna, but the company's share price is currently only 0.4 US dollars, there is no reference value. Decline, the first three stocks decline last week, the United States are non-ferrous metals, oil and gas and the financial sector, the decline followed by 4.09%, 2.99% and 2.85%. The plunge of colored plates is very conspicuous. The drop of commodity prices such as gold brought by the strengthening of the U.S. dollar is undoubtedly the main reason for the plate plunge. In terms of the secondary sector, the top three solidified telecommunications and paper and beverage sectors rose 0.8%, 0.73% and 0.36% respectively last week. The top three losers were industrial metals, infrastructure and drilling, down 4.94%, 4.87% and Home Exhaust Fan,Wall Exhaust Fan,Silent Exhaust Fan,Ceiling Ventilation Fan Foshan kanasi electrical co.,ltd , https://www.fskanasifan.com