News on China's scientific and technological development.

ChongqingHotPot92

Junior Member
Registered Member
i have read all of your massages.. indians will never understand China and Chinese people. its tragic

let me tell you one. everything has changed since 2018-19. Trade/tech war , sanctions and racism against Chinese/Asian people in USA have changed everything in China. i repeat everything has changed since then

i have 2023 data of Peking , Tsinghua and other top Chinese Universities. least number of their top students are planning to go USA for higher studies. this is lowest percentage in 2 decades .. many reasons behind it.

i don't think so i need to repost all charts what @Serb posted .. its now USA, facing brain drain. more and more Chinese scientists returning home. there are plenty of charts and articles ..

what you posted is upto until 2019 .. but from 2019 things have changing really fast

we have official data from Ministry..
View attachment 123051
this process has accelerated since 2019..

its better for you to focus on your country. you just trying to please themselves. oh we india and China is in same boat but reality is totally different.
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USA brain drain ..

View attachment 123053View attachment 123054


View attachment 123055
So the China Initiative had the opposite intended effect
 

sunnymaxi

Major
Registered Member
The University of Science and Technology of China and other units successfully developed a hyperspectral three-dimensional targeted imager, Breaking the European and American monopoly

Professor Liu Cheng of the University of Science and Technology of China took the lead to independently develop a hyperspectral three-dimensional targeted imager that simultaneously has the functions of vertical imaging, horizontal imaging and pollution source targeted imaging remote sensing of multi-component pollutant gases, breaking the European and American core components and technologies in this field. Dependence on key technologies..

Led by Professor Liu Cheng of the University of Science and Technology of China, with the participation of Hefei Institute of Physical Sciences of the Chinese Academy of Sciences, Anhui University, Guangzhou Ecological Environment Monitoring Center Station of Guangdong Province and other units, the independently developed system has the capabilities of vertical imaging, horizontal imaging and pollution source targeting of multi-component pollution gases. The hyperspectral three-dimensional targeted imager with imaging remote sensing function won the gold medal in the 2023 second "Golden Sui Award" China Optoelectronic Instrument Brand List. This award is sponsored by the Chinese Optical Engineering Society and the China Institute of Metrology, focusing on high-end optoelectronic instruments independently developed, manufactured and produced in China..

The vertical imaging remote sensing function of the hyperspectral pollution gas three-dimensional targeted imager enables simultaneous observation of vertical profiles of ozone and precursors without blind areas, and can be used to identify the vertical evolution rules of ozone pollution sensitivity, study the impact of high-altitude transport and vertical exchange of pollutants It is widely used in China; horizontal imaging remote sensing can reduce the scope of high-value emission hotspots from the kilometer level of satellite remote sensing and ground in-situ monitoring to the hundred-meter scale; emission source imaging remote sensing can lock emission responsibilities to meter-scale pollution outlets , to achieve dynamic monitoring of emission flux...

The team's research results have broken my country's dependence on European and American core components and key technologies for hyperspectral pollution gas ground-based remote sensing. Relevant results have been published in domestic and foreign journals such as Earth-Science Reviews, Remote Sensing of Environment, Science Bulletin, and Engineering, and have been authorized so far. 4 invention patents and 1 utility model patent. Hyperspectral pollution gas three-dimensional targeted imaging equipment is used by more than 20 government departments and enterprises, including the Satellite Environmental Application Center of the Ministry of Ecology and Environment and the Chinese Academy of Meteorological Sciences, for three-dimensional monitoring of the atmospheric environment. It has been used for major national events such as the China International Import Expo and the Chengdu Universiade. Provide support for air quality assurance..

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sunnymaxi

Major
Registered Member
this is serious breakthrough..

Chinese nuclear weapons scientists build X-ray machine hailed as potential ‘holy grail’ for cancer treatment.

Powerful ‘Flash’ irradiation system can deliver high-energy radiation and has the potential to revolutionise conventional radiotherapy

Researchers are still unravelling how and why it works but are excited by the possibility of breaking the bottleneck of radiation dosage

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A group of Chinese researchers, mainly from institutes involved in nuclear weapons and related scientific research, have built a powerful irradiation system known as “Flash” that can deliver extremely high-energy radiation and has the potential to revolutionise conventional radiotherapy.

Their prototype can generate an energy or “dose rate” of more than 80 gray (Gy) per second – a unit used to measure the amount of radiation absorbed by an object or person. Although both current treatments and the team’s prototype use X-rays as the radiation source, the new system generates much more than the 0.5 to 20Gy per minute of conventional radiotherapy.

Their results show that the same amount of radiation could be delivered in much higher-intensity bursts of less than a second – a significant advance on current radiation treatment that has been plagued by toxicity to surrounding non-malignant tissue when killing tumours. Extremely high-energy irradiation might be one way out.

“Although there have been similar repeated experiments, both domestically and internationally, ultra-high dose rate high-energy X-rays that meet clinical requirements have not been achieved,” the researchers said in a paper on the new system.

But they announced that their machine met the clinical ultra-high dose rate requirement of more than 40Gy per second.

The advance was reported in the Chinese academic journal High Power Laser and Particle Beams in December, co-authored by researchers from institutes including the China Academy of Engineering Physics in Sichuan province and Harbin Engineering University in northeastern China.

Along with chemotherapy, surgery and immunotherapy, radiotherapy is one of the mainstays of cancer treatment. Since it was first used more than a century ago, doctors have sought the optimal balance between maximising the dosage for the best possible benefit and limiting the damage to normal tissue.

“We have reached a bottleneck where our mastery of energy beams could not take us to a better place,” said Zhang Yingying, an oncologist at Xiangya Hospital of Central South University in Hunan Province. “We know the limits of safe radiation doses for human tissues and it prevents us from pursuing more effective treatment.”

Over the past decade, repeated trials have shown that this issue could be significantly improved by using ultra-high rates of radiation dose, typically above the 40Gy per second threshold, to achieve the same anti-tumour effect while sparing much more healthy tissue – an effect called “Flash”.

Flash is the most exciting frontier of radiotherapy technology and scientists, clinicians and engineers have been pushing its development.

In the 1960s, two scientists first observed that bacteria were more resistant to ultra-high dose rates of radiation than to conventional intensity. However, it was not until the 2010s that this phenomenon began to spark enthusiasm in the academic community.

At that time, experiments were carried out by researchers from the Institut Curie and the Institut Gustave Roussy in France and the Centre Hospitalier Universitaire Vaudois (CHUV) in Switzerland. Their landmark study published in 2014 showed that extremely high-intensity of radiation could induce the same anti-tumour effects, but with significantly less damage to normal tissue.

When Zhang first heard about the Flash effect, she described feeling “excited” at the possibility of breaking this bottleneck. “We are pinning our hopes on Flash to crack this long-standing puzzle,” she said.

Yang Gen, a professor of medical physics and engineering at Peking University who was not involved in the study, described Flash as the future of treatment.

“The radiotherapy used in hospitals today is mainly based on technology from a century ago, and the newer proton and heavy ion treatments are based on physical theories from 80 years ago, while Flash is the next-generation technology”.

Flash eclipses conventional radiotherapy by requiring patients to undergo fewer and much shorter treatment sessions.

“If you compare the energy output per unit of time, Flash could be tens or even hundreds of times higher than current methods,” Zhang said, indicating that treatment that has required numerous sessions could now be reduced to just one or two.

But even more tantalising is the potential for doctors to target tumours more effectively and significantly reduce the intimidating side effects of radiotherapy.

“It could be a ‘holy grail’ of radiotherapy,” said Steven Lin, a radiation oncologist at MD Anderson Cancer Centre in the United States, in an article published by the institute in September.

Zhang said what impressed her most about the latest machine was not the dose rate but the source of the energy.

“In previous studies to achieve the Flash effect, the radiation sources were mainly based on protons or electrons, whereas this Chinese team uses photons, or X-rays,” she said.

Proton radiotherapy at conventional doses is already used in practice. Its energy decays after reaching a peak, causing less damage to healthy tissue and making it suitable to treat some thorny cancers such as spinal cord oncology in children. But the machines are expensive and bulky – some are as big as a basketball court.

The 80.5Gy per second achieved in this paper was not a very high value in itself, Zhang said, with Flash radiation delivered by modified proton-based prototype machines reported to reach hundreds, or even thousands of units of energy. But X-rays are the most widely used technology in radiotherapy, and the machines used are much more compact.

Electron beams, on the other hand, had limited medical applications because they could not penetrate far or effectively treat deep tumours, Zhang said.

In their paper, the authors said their machine was comparable in size to existing radiation machines in hospitals, known as “medical linear accelerators”, and if successfully developed would be easier to install and access.

“It is not easy to achieve these metrics with a miniaturised machine,” said Yang Gen. He said exceeding 80Gy was a performance milestone.

Although it generates excitement, Flash therapy is still in its early stages. The earliest researchers have just brought it into clinical trials.

Scientists at Cincinnati Children’s Hospital Medical Centre in the US, in collaboration with medical device company Varian, have completed a phase 1 clinical trial of 10 participants with promising early results, according to a study published in the Journal of the American Medical Association Oncology in 2022.

The benefits of Flash have been replicated in more than 30 studies but researchers are still unravelling how and why it works.

“We have observed this phenomenon, but we have not yet worked out its biological mechanism,” Zhang said.

“There are still too many questions to be investigated, such as what are the optimal dose rates for different organs, so it is not yet ready for clinical application.”

Another obstacle is the lack of a dedicated machine for Flash. Worldwide, there are only a few prototype machines used for studies in laboratories and not designed for patient use, she said, adding that she was conducting research with scientists at Tsinghua University because her hospital did not have the facility.

Some biotech companies specialising in radiotherapy equipment that recognise the huge medical potential and market gap, have acted. The French company Theryq, together with CHUV in Switzerland and the European Laboratory for Particle Physics (CERN), announced at the end of 2022 they would jointly develop the world’s first Flash radiotherapy machine. Their first clinical trials are planned for next year.

The Chinese researchers announced that their prototype X-ray Flash radiotherapy machine would be made available to the public and they plan to use it as a platform for preclinical and clinical studies.

“There is still a lot to learn,” radiation oncologist Lin said. “We have to be careful and not let the excitement about the potential keep us from our careful approach in research.”

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tacoburger

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In summary, the diamagnetism in CSLA has been investigated via both M-T curves andhysteresis M-H loops, which can be observed up to 250 K. Given the ZFC-FC bifurcation at above 300 K, we think there is still great chance to observe room-temperature superconductivity. The signals in our sample are still extremely weak, so we have to devote efforts to further synthesizing scalable samples with more active components
In a surprising turn of events, a group of Chinese researchers think that they may have discovered room temperature superconductivity in a variant of LK-99.

This may seem like bullshit but

-This researchers all come from some very prestigious universities
-Having seen what happened to the original Korean researchers, they should be aware that any unfounded claims will make them a laughing stock
-They have had months to comb over their results, compared to the mad rush at the start of the whole LK-99 debate
-The tone of the paper is very muted, it's very open to the possibility that they could be wrong since the meissner effect observed is very very weak and they are being super cautious and they think that if there is superconducting material, it's in tiny amounts compared to the overall sample
-The observed meissner effect is only present at -23c, which is great improvement over existing high temperature superconductors, but nowhere near room temperature unless you live up near the poles, though the team says that it might improve with some refinement.

The jury is still out and LK-99 isn't completely dead yet, we might not find out the true answer for another couple of months or even years. Although if true, I wonder who takes the credit. This is based off LK-99 but it's a heavily modified version compared to the original korean papers and most researchers have already abandoned their research into LK-99 meaning that the material could have been completely abandoned if not for this paper reviving interest in it. Honestly, I have no idea why publish the paper at all during this early stage, at least wait until you have concrete evidence, a sample large enough to do visible physical tests on, or better yet don't publish at all and keep the details secret within China for a massive first mover advantage.

The research team include scientists from the Institute of Process Engineering of the Chinese Academy of Sciences, South China University of Technology, Beijing 2060 Technology, Huazhong University of Science and Technology, Fuzhou University, Tokai University and the University of Science and Technology Beijing.

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, the authors of the papers are answering questions on that website.
 
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tokenanalyst

Brigadier
Registered Member

China third-generation independent superconducting quantum computer equipped with a 72-bit superconducting quantum chip comes online​


China's third-generation independent superconducting quantum computer "Original Wukong" was launched online today. It is equipped with a 72-bit superconducting quantum chip "Wukong Core" and is currently China's most advanced programmable and deliverable superconducting quantum computer.
Superconducting quantum computers are quantum computers based on superconducting circuit quantum chips. Dr. Kong Weicheng, deputy director of the Anhui Provincial Quantum Computing Engineering Research Center, introduced that "Original Wukong" matches the Origin third-generation quantum computing measurement and control system "Original Tianji", which is the first time in China that the batch automated testing of quantum chips has been truly implemented. The complete quantum computer Operation efficiency has been improved dozens of times.
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According to reports, "Wukong" is equipped with a 72-bit superconducting quantum chip "Wukong Core". This chip is manufactured on China's first quantum chip production line and has a total of 198 qubits, including 72 working qubits and 126 coupler qubits.
The official roadmap of Origin Quantum shows that by 2025, Origin Quantum will break through 1,000 qubits and reach 1,024 qubits. It will use quantum computing to try to solve corresponding problems in different industry fields and develop industry-specific quantum computers.

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sunnymaxi

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second country after South Korea to achieve this ..

China's first and World's second 8.6-generation AMOLED display Technology ..

on January 10 that according to "Chengdu Daily", Chengdu High-tech Zone and BOE Technology Group Co., Ltd. signed an investment cooperation agreement in Chengdu to build the country's first and the world's second 8.6-generation AMOLED display device in Chengdu. production line, with a total investment of 63 billion yuan . After the project is completed, Chengdu will become the largest flexible panel production base in the country .

BOE's 8.6th-generation AMOLED production line project is Sichuan Province's largest single industrial project with the largest investment volume to date, and is expected to achieve mass production in the fourth quarter of 2026 .

The product is mainly positioned at medium-sized AMOLED panels, adopting a technical route that is different from the existing 6th generation AMOLED panels, and is mainly used in IT products such as mid-to-high-end notebook computers and tablet computers .

It is worth mentioning that as early as September 2007, BOE’s 4.5-generation LCD panel production line project was launched in Chengdu High-tech Zone . This project was BOE’s first production line outside Beijing and the first LCD panel production line in western China to achieve mass production. At that time, it was the only fully automatic production line in mainland China that realized the integrated production of color filters and LCD panels.

AMOLED is known as the next generation display technology. Compared with traditional LCD displays, it has wider viewing angles, higher refresh rates and thinner sizes. It is widely used in mobile phones, monitors, TVs and other display devices.

The display generation line generation is defined according to the size of the glass substrate used in the production of display screens. The size of the glass substrate of the 8.6 generation line is 2250*2600mm..

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