elleparismaroc

[elleparismaroc 2023] Does not produce electricity, but manages electricity

Wed, 15 Feb 2023 21:58:21 +0800

In August 2022, Tesla held an emergency response event in California, where power shortages are most severe, and more than 2,300 Tesla users scattered across California used "virtual" to deliver home energy storage devices 'electric power plants'. Delivered where you need it most on the "PowerWall". This distributed power was up to 16 megawatts at one point.

This is a win-win effort. Users can export non-depleting electricity and earn $2 per 1 kWh of electricity. Dispatch of virtual power plants reduces the enormous strain on the power grid during periods of peak power consumption.

"Virtual power plant, as the name suggests, is a virtual power plant. It does not directly produce electricity, but acts as a power plant." Dr. Wang Chenggen, director of New Energy Technology Office at Jiangsu State Electric Power Research Institute, said the virtual power plant is actually an energy management system.

The traditional power grid has worked well for many years and formed a complete control system, so why build a virtual power plant from scratch?

In a traditional power system, the power grid adjusts supply-side power production according to consumption-side power demand, and most power plants on the supply side are large heat units with millions of units. megabyte

Wang Chenggen told Science and Technology Daily that with the construction of new power systems in recent years, power generation on the supply side and power demand on the power consumption side are becoming more and more random. Thus, they caused serious difficulties.

Particularly on the supply side, with the “dual carbon” targets and energy transitions of recent years, the share of wind power in the energy mix continues to grow, with new energies that are “weather dependent” and intermittent. In terms of power consumption, the level of charging terminals represented by the large-scale spread of air conditioners is increasing, and new loads such as charging rods are appearing, making it more difficult to predict power loads.

The emergence of virtual power plants can minimize strong random fluctuations in new energy power, improve the use of new energy, and blur the physical boundaries between power plants and energy supply and consumption in traditional energy systems.

A virtual power plant integrates and regulates relatively distributed power sources, power grids, loads, and energy storage devices to achieve "source, grid, load, and storage integration", which corresponds to a managed power source that can be referred to as a "power plant". It can also be used as a "positive power supply" to supply power to the system, or a "negative power supply" to absorb the power stored in the system, and realize valley cutting and filling flexibly.

[elleparismaroc 2023] The number of charging piles in my country has increased by nearly 100%

Wed, 15 Feb 2023 21:57:25 +0800

The number of charging infrastructure in our country has increased by almost 100% to 5.2 million in one year. Among them, the national charging infrastructure increased by about 650,000 to a total of 1.8 million, and the private charging infrastructure increased by about 1.9 million to exceed 3.4 million in total.

Liang Changxin, spokesman for the State Energy Administration, made the announcement on February 13. Charging infrastructure is an important guarantee supporting the development of the new energy vehicle industry and is critical to promoting the clean and low-carbon transition of our country's transportation sector. In recent years, our country's charging infrastructure has developed rapidly, and the world's largest and most widespread charging infrastructure network has been established.

Liang Changxing said that China's charger market is trending toward diversification, with more than 3,000 companies currently developing various charger lines. Electric vehicle charging is on the rise and by 2022 annual charging will exceed 40 billion kWh, an increase of more than 85% year over year.

He said the industry's technology and standard system are gradually maturing. The State Energy Administration established the Technical Committee for Standardization of Electric Vehicle Charging Facilities in the Energy Field, established China's independent intellectual property rights electric infrastructure standard system, and issued a total of 31 national standards and 26 industry standards. Charging standards are on par with Europe, America and Japan.

"Currently, there are problems such as unreasonable design of public charging facilities, difficulty in building piles in some residential areas, irregular operation of charging markets, and poor facility management." The administration will continue to strengthen the charging infrastructure with the relevant departments in the next phase. At the highest level, design and coordinate the development policy of the facility industry to optimize the planning and layout of the charging network and focus on solving charging problems. Improve the national control platform system, improve the quality and standard of charging industry construction and operation, and contribute to the development of the new energy automobile industry.

[elleparismaroc 2023] Single Electron Imaging Appears

Wed, 15 Feb 2023 21:56:20 +0800

A team of scientists led by the Weizmann Institute in Israel published a paper in the latest issue of Applied Physics Reviews demonstrating a new method for imaging individual electrons. This method is still in its infancy. It promises "close-up" imaging of future molecules that could revolutionize drug discovery and characterization of quantum materials.

Magnetic resonance imaging (MRI) technology has played a key role in diagnosing many diseases for decades, but remains unclear. However, there are still some fundamental issues that remain unresolved. For example, MRI readings are not very effective. This requires sample sizes in the hundreds of billions of molecules. The result is an average result. The average of most diagnostic procedures will be optimal. But at the same time, they lose details that can hide important biological processes.

The researchers explain that it is necessary to develop tools that can take close-up images of individual molecules in order to obtain detailed information of individual molecules. for new discoveries or drug development

Because of this, in a recent study, the research team developed a method to determine the location of electrons. This method is based on a rotating magnetic field near the center of a nitrogen vacancy. This is a special type of atomic size defect in synthetic diamond. Commonly used as quantum sensors. Because nitrogen vacancies are only atoms in size. Therefore, the sensor is particularly sensitive to changes in its surroundings. And because of its quantum nature, the sensor can therefore distinguish between single electrons and multiple electrons. Ideal for location measurements. single electron

The team notes that the latest method has reached an important stage in precision nanoimaging, and that in the future, scientists will be able to image other molecules using the technique and take "close-up" images.

[elleparismaroc 2023] 'Art photo' of the oldest Spinosaurus brain ever seen

Wed, 15 Feb 2023 21:55:42 +0800

Researchers from the University of Southampton in the UK and the University of Ohio in the US have teamed up to create the oldest Spinosaurus brain and inner ear to date. To reveal how these large carnivorous dinosaurs interacted with their environment. Related research published in the latest issue "Journal of Anatomy"

Spinosaurus was a huge theropod dinosaur with elongated crocodile-like jaws and conical teeth. This helps them adapt to an aquatic lifestyle. This includes hunting for bait (such as large fish) along the river bank. This lifestyle was very different from that of theropod dinosaurs such as Allosaurus and Tyrannosaurus Rex. This makes Spinosaurus one of the most controversial dinosaur species.

Better understand the evolution of the Spinosaurus brain and senses. The team scanned Surrey's Baryonyx fossils and the Isle of Wight's Helucerasaurus from brain carapace material. The two oldest spinosaurus known date back to the early Cretaceous, 125 million years ago. The skulls of both dinosaur specimens are well preserved. And the team digitally reconstructed the long-rotting internal soft tissue.

They found that the odor processing ducts of these two spinosaurs were not particularly developed. The ear may be sensitive to low-frequency sounds. And other parts of the brain, the ability to stare at prey without moving the head are less developed. Late Spinosaurus

Chris Barker, a PhD student at the University of Southampton who led the study, said: "Despite the unusual habitat of these ancient spinosaurs, they seem to have many components in their brains and senses, as in other large theropods. There is no evidence that they were semi-aquatic. Their lifestyle has to do with how their brains are structured. ”

Researchers say this latest discovery indicates that spinosaurus ancestors had brains and senses adapted to a semi-fish lifestyle. And Spinosaurus had to evolve an unusual nose and teeth to become a semi-aquatic animal.

Researchers point out that advances in fossil CT imaging can now assess the cognitive and sensory abilities of extinct animals. Learn how the brains of dinosaurs like Spinosaurus evolved. Fossil New Revolution Expected to Revolutionize the Field

[elleparismaroc 2023] New 'flip-flop' qubits emerge

Wed, 15 Feb 2023 21:54:35 +0800

Australian researchers recently demonstrated a new type of qubit operation called a "flip-flop" that combines the delicate quantum properties of individual atoms with the ease of controlling electrical signals in ordinary computer chips. The findings were published in Science Advances.

The UNSW research team has shown for the first time in the world that electron spins as well as nuclear spins of individual phosphorus atoms in silicon can be used as qubits. Both qubits work very well on their own, but they require an oscillating magnetic field to work. And the nanometer-scale magnetic fields inherent in the individual components of a quantum computer are difficult to accommodate.

The team realized that by defining a qubit as the combined up/down direction of electrons and nuclei, they could manipulate these qubits using only electric fields. This new qubit is called a "flip-flop" because it consists of two spins (electron spin and nuclear spin) belonging to the same atom that always point in opposite directions.

This theory predicts that flip-flop qubits can be programmed into arbitrary quantum states by rearranging electrons relative to the nucleus. A new study has confirmed this prediction with complete accuracy.

Most importantly, instead of illuminating the chip with an oscillating magnetic field, this electron displacement is achieved by applying a voltage to tiny metal electrodes. It more closely resembles the electronic signal type chips that are common in traditional silicon computers.

Electrically controlling flip-flop qubits by moving electrons in atomic nuclei is accompanied by very important phenomena. When a negative charge (electron) moves away from a positive charge (nucleus), an electric dipole is formed. It combines two or more electric dipoles located close to each other to create a strong electrical connection. It can be modulated to perform multiqubit logic operations.

These electric dipoles do not have to touch each other, but they do influence each other. Theoretical studies have shown that 200 nanometers is the optimal distance for fast and accurate quantum work. Researchers say this could be a game changer. Various control and readout devices can be embedded between the qubits, making the processor easier to connect and operate.

[elleparismaroc 20Chengdu will promote the transformation of scientific & technological achievements

Wed, 15 Feb 2023 21:53:39 +0800

On the 14th, the Chengdu Science and Technology Bureau announced that it held the Chengdu 2023 Science and Technology Innovation Conference a few days ago and promoted the performance change work. The meeting proposed the comprehensive promotion of science and technology achievement transformation as "Project No. 1" of the 2023 Chengdu Science and Technology Innovation Work. The results of deepening the reform of systems and mechanisms, giving games a leading role as a platform, promoting in-depth integration of industry, education and research, and improving the structure of the transformation service system were made public. and technical achievements.

The meeting suggested that this year, Chengdu should study non-capitalization management reform, promote state assets audit, and transform scientific and technological professional achievements without including other scientific and technological achievements in asset and capital audits. At the same time, it includes experimental reform of scientific and technological performance evaluation, implementation of representative performance evaluation of scientific and technological talents and general team-based evaluation system, establishment of the third standard of party evaluation system, and research on innovation indicators. Performance is divided into position evaluation and evaluation contents. The city further plays a leading role in the innovation platform, promotes the establishment of a cross-region joint innovation model of "innovation source + performance transformation" in the Western Science City (Chengdu), and promotes innovation platform. Relying on basic science and technology infrastructure, such as the National Aeronautical Equipment Center for Innovation and Technology National Program Transformation Foundation, Tianfu Research Institute and other major innovation platforms, learn and explore the establishment of a professional transformation company of market-oriented achievements, and "laboratory + foundation + company + foundation" " Establish a transformation model.

At the meeting, the head of the Chengdu Municipal Bureau of Science and Technology said that it would support all districts (villages) and cities in establishing new research and experimental institutions aimed at transforming performance and markets. In accordance with the method of "open publishing + open listing, competent people", struggle with the transformation of industrial chain achievements, and open and share major scientific research infrastructure and large-scale scientific research equipment. At the same time, Chengdu Science and Technology Ecological Island will be built to gather functions such as display of scientific and technological achievements, conversion trading and combination of factors to create an innovative technological ecology with advantages and integration elements. Focusing on electronic information, medical health, new materials and other industrial ecosystems, build a pilot test platform deployment for design maturity, concept testing and small-scale pilot production, and accelerate the improvement of the performance transformation service chain.

[elleparismaroc 2023] The first OTA radio frequency laboratory in the coal industry was built

Wed, 15 Feb 2023 21:53:04 +0800

Science and Technology Daily, Beijing, Feb. 14 (Reporter Liu Yuanyuan) A reporter from China Coal Science and Industry Group Co., Ltd learned on the 14th that the first OTA test (wireless aerial radiation test) was conducted in the Chinese coal industry. . A coal science academy was recently built and operated by the enterprise.

The completion of the laboratory fills a gap in how the industry tests the effectiveness of 3D radiation and means of extracting 5G equipment, demonstrating that the coal industry has radio frequency emission analysis of antennas, terminals and underground-based equipment. 5G NR, above. -Fi and other wireless testing capabilities will play an important role in promoting and accelerating the implementation of 5G wireless technology and equipment in underground coal mines.

The OTA radio radio frequency test system can test the 3D radiation performance of wireless devices in the air. It is mainly used to test the "radiation transmission power" and "radiation reception sensitivity" of products in a three-dimensional space. This is standard. How to test wireless radio frequency performance. Passive and active OTA testing can provide criteria and guidelines for designing and optimizing the performance of RF products. The establishment of OTA radio radio frequency laboratory is very important for evaluating radio frequency performance and improving the performance design of wireless communication products in coal mines, especially those related to 5G and Wi-Fi6 technologies.

"OTA Radio Frequency Laboratory" is said to be one of the key technical equipments of the National Development and Reform Commission in the "New Mining Equipment and New Material Safety Analysis and Testing Laboratory" project conducted by the Coal Science Academy. 5m×5m×5m units. The multi-angle fully anechoic camera has technical advantages such as high repeatability, high accuracy and high inspection efficiency. Along with the in-depth development of coal mine intelligence, it will provide important technical support for future standard development and revision, performance analysis and testing of wireless technology equipment such as intelligent wireless terminals and intelligent base stations in coal mines.

[elleparismaroc 2023] Ningde era leads the power battery industry

Wed, 15 Feb 2023 21:50:51 +0800

Ford Motor Company announced that it will build a battery plant in Michigan, the first full-scale Ford battery plant in the United States. What is unusual is that this time, Ford took the lead in inviting the Ningde Times to support the construction and operation of the plant, while Ford paid the Ningde Times a battery patent license fee for battery manufacturing technology. .

"This is a sign that our country's industry has reached a new peak. It means that China's new energy vehicle technology and industry are already at the forefront of the world. This is an important milestone." Ouyang Minggao, an academician at the Chinese Academy of Sciences, analyzed that the ability to make money from patent licensing perfectly reflects the Nind era. Excellent technologies, products and technologies have passed large-scale tests and are recognized worldwide.

In order to achieve the direction change and development of the automobile industry, the Ministry of Science and Technology focuses on new energy vehicles as early as 2001, establishes 'three types' of clean electric vehicles, hybrid vehicles, and fuel vehicles, and 'three types of batteries, motors, and electronic controls'. ". The general sequence of scientific research "three kinds and three horizontals" for the development of our country's new energy industry has established a solid technological foundation and encouraged enterprises to make efforts. They innovate and showcase their talents. After years of development, China has achieved the world's first production and sales of new energy vehicles for eight consecutive years, and has become the country with the largest number of new energy vehicles.

However, if we rely only on economies of scale, Korea's new energy transportation industry still cannot escape from the negative situation of evaluators. In particular, in the automobile industry, which is called the crown of the industry, only original technology has the right to speak, so it is urgent for Korea to focus on world-class companies with advanced technologies.

In fact, in recent years, the electric battery industry has shown the world the outstanding achievements of our country's innovation and development. Not only did the Ningde Times rank first in the world in terms of battery usage #1 in the world for 6 consecutive years, and also ranked first among global battery companies with the largest R&D investment, fastest patent development rate, and most comprehensive technology root coverage. . In the first three quarters of 2022, R&D investment reached RMB 10.6 billion, with more than 14,000 granted and pending patents, and more than 12,000 R&D employees. It is a sodium ion battery that has achieved technological progress based on material achievements. Real innovation encouraged by the state. In addition, Ningde era has won two global beacon enterprises in this field due to the innovation of "extreme production", making it a true double champion of technology and production in the global battery industry.

Dong Yang, chairman of the China Electric Power Industry Innovation Alliance and former vice president of the China Automobile Manufacturers Association, said, "Amid the wave of global integration in the automobile industry, no country's automobile industry can produce good products on its own. no,” he pointed out. .China's new energy vehicle industry is at the forefront of the world, and exports of technology, products and management to the world are very normal after progress."