Science Archives - Friends of Socialist China

Chinese scientists design new cooling material for buildings to reduce carbon emissions

The following article from Xinhua reports on an exciting scientific development: Chinese researchers have created a sustainable radiative cooling material with the potential to cool buildings by up to 16 degrees Celcius without consuming any energy in the process.

The article notes that “in a world experiencing rapid warming, effectively cooling our homes during sweltering summer months with reduced energy consumption and lower greenhouse gas emissions is crucial for meeting carbon reduction targets”. As such, “the novel aerogel holds promise for significantly reducing carbon emissions and energy consumption and paves the way for innovative and sustainable radiative cooling materials in the future”.

According to Victoria Bela in SCMP, “the biodegradable material can be welded together on a large scale using only water, creating planks that can act as a passive cooling material that will reduce the need for energy-hungry cooling methods such as air conditioning and refrigeration that risk undermining the fight against global warming”.

In this area as in many others, China is leading the way in scientific research towards a sustainable future for humanity.

The study is written up in Science.

In a world experiencing rapid warming, effectively cooling our homes during sweltering summer months with reduced energy consumption and lower greenhouse gas emissions is crucial for meeting carbon reduction targets.

A team of Chinese researchers has crafted an innovative biomass-derived material using DNA, the genetic blueprint of life. This aerogel demonstrates a remarkable ability to reduce ambient temperatures by 16 degrees Celsius on sunny days, even under intense solar radiation.

The researchers combined DNA and gelatin into an ordered layered aerogel structure that converts absorbed ultraviolet light into visible light to surpass 100 percent solar reflectance, yielding exceptional radiative cooling.

The adoption of biopolymer-based radiative cooling material helps mitigate environmental pollution, according to the study published on Friday in the journal Science.

Moreover, these aerogels, efficiently fabricated on a large scale through water welding, demonstrate remarkable reparability, recyclability and biodegradability.

This aerogel material is poised to revolutionize the energy efficiency of urban architecture as an outer protective layer, said the paper’s corresponding author Zhao Haibo from Sichuan University.

The simulation outcomes of the study have demonstrated a substantial reduction in annual energy expenditure in cooling for buildings across all modeled cities.

The novel aerogel holds promise for significantly reducing carbon emissions and energy consumption and paves the way for innovative and sustainable radiative cooling materials in the future, Zhao said.

China has committed to the dual carbon goals of peaking carbon emissions by 2030 and achieving carbon neutrality by 2060.

Breakthrough by Shanghai doctors uses stem cells to cure diabetes

The following article from China Daily reports on an extremely promising Chinese innovation in the treatment of diabetes: “Doctors in Shanghai have, for the first time in the world, cured a patient’s diabetes through the transplantation of pancreatic cells derived from stem cells.” The patient has been able to function normally without insulin injections for nearly three years.

Up to now, it has been possible to treat severe diabetes patients with pancreatic cell transplantation, but the shortage of donors and the complexity of the technology have meant that clinical needs are not currently being met. The doctors at Shanghai Changzheng Hospital have shown that it is possible to restore normal insulin production using pancreatic cells derived from the patient’s own stem cells – thus not requiring a donor. Yin Hao, director of the hospital’s Organ Transplant Center, commented: “Our technology has matured and it has pushed boundaries in the field of regenerative medicine for the treatment of diabetes.”

Timothy Kieffer, a professor in the department of cellular and physiological sciences at the University of British Columbia, Canada, is cited by South China Morning Post describing the study as “representing an important advance in the field of cell therapy for diabetes.” If the results of the Shanghai study can be reliably reproduced, “it can free patients from the burden of chronic medications, improve health and quality of life, and reduce healthcare expenditures”.

The funding sources for the study were the Chinese Academy of Science, the National Basic Research Program of China, the National Natural Science Foundation of China, the Science and Technology Commission of Shanghai Municipality, and the Shenkang Project. The study has been published in the journal Cell Discovery.

Doctors in Shanghai have, for the first time in the world, cured a patient’s diabetes through the transplantation of pancreatic cells derived from stem cells.

The 59-year-old man, who had Type 2 diabetes for 25 years, has been completely weaned off insulin for 33 months, Shanghai Changzheng Hospital announced on Tuesday.

A paper about the medical breakthrough, achieved after more than a decade of endeavor by a team of doctors at the hospital, was published on the website of the journal Cell Discovery on April 30.

It is the first reported instance in the world of a case of diabetes with severely impaired pancreatic islet function being cured via stem cell-derived autologous, regenerative islet transplantation, the hospital said. The most common pancreatic islet cells produce insulin.

Diabetes poses a serious threat to human health. Medical experts said that poor blood sugar control over a long period can lead to severe complications, including blindness, kidney failure, cardiovascular and cerebrovascular complications, and amputation. Life-threatening situations may also occur due to hypoglycemic coma, and ketoacidosis, which happens when the body begins breaking down fat too quickly.

China is the country with the largest diabetic patient population. There are 140 million diabetes patients in the country, of whom about 40 million depend on lifelong insulin injections, according to the International Diabetes Federation.

Experts said severe diabetes patients struggling with blood sugar control can only be effectively treated by minimally invasive transplantation, which injects islet tissue extracted from the pancreas of a donor.

However, due to factors such as a severe shortage of donors and the complexity of the islet isolation technology, it is hard for such transplantation to meet current clinical needs. That made how to regenerate human pancreatic islet tissue on a large scale in vitro a worldwide academic focus, the team in Shanghai said.

Yin Hao, a leading researcher on the team and director of the hospital’s Organ Transplant Center, said they used the patient’s own peripheral blood mononuclear cells and reprogrammed them into autologous induced pluripotent stem cells. They used technology they devised to transform them into “seed cells” and reconstituted pancreatic islet tissue in an artificial environment.

“Our technology has matured and it has pushed boundaries in the field of regenerative medicine for the treatment of diabetes,” said Yin, whose team conducted the research with scientists from the Center for Excellence in Molecular Cell Science at the Chinese Academy of Sciences.

He said the patient, who was at serious risk of diabetes complications, had a kidney transplant in June 2017 but had lost most pancreatic islet function and relied on multiple insulin injections every day.

The patient received the transplantation in July 2021. Eleven weeks after the surgery, he was weaned off external insulin, and the dose of oral drugs for sugar-level control was gradually reduced and completely withdrawn one year later. “Follow-up examinations showed that the patient’s pancreatic islet function was effectively restored, and his renal function was within normal range,” Yin said. “Such results suggested that the treatment can avoid the progression of diabetic complications.”

China, Latin American and Caribbean states deepen their space cooperation

In a significant step to enhance the unity and solidarity of the Global South and to promote economic, scientific and technological cooperation and development, China hosted the first China-Latin American and Caribbean States Space Cooperation Forum in the city of Wuhan, capital of the central province of Hubei, in the last week of April.

Chinese leader Xi Jinping sent a congratulatory letter to the forum in which he said that China and the Latin American and Caribbean countries have achieved fruitful results in space cooperation in recent years, including new progress in the fields of remote sensing satellites, communication satellites and the deep space station network, which have played an important role in promoting scientific and technological progress, strengthening regional connectivity and improving people’s wellbeing.

China is ready to work with the Latin American and Caribbean countries to build a high-level space cooperation partnership, promote space technology to better benefit both peoples, and continue to promote the building of a community of China and the Latin American and Caribbean countries with a shared future.

Chinese Vice Premier Zhang Guoqing read out Xi’s letter at the opening ceremony on April 24. In his own speech, Zhang added that China stands ready to work with the Latin American and Caribbean countries to strengthen the synergy of development strategies in the field of space, deepen scientific and technological innovation cooperation, create more application scenarios, promote industrial complementarity and mutual enhancement, and intensify talent exchanges, so as to push biliteral space cooperation to a higher level and bring tangible benefits to the people of both sides.

Luther Castillo Harry, Minister of Science, Technology and Innovation of Honduras, read out the congratulatory letter from President Xiomara Castro. She said that China has been committed to carrying out space cooperation with developing countries, which can help both sides to overcome common challenges, achieve sustainable development and mitigate climate change and natural disasters.

Gabriela Jimenez, Venezuelan Minister of Science and Technology, read out the congratulatory letter from Venezuelan President Nicolás Maduro. He said China and Venezuela have close cooperation and profound friendship in the aerospace sector, which is of great significance for promoting space cooperation between China and Latin America.

The forum reviewed and highlighted examples of China’s space cooperation with Argentina, Brazil and Venezuela in particular.

Yue Yunxia, director of the economic research office of the Institute of Latin American Studies of the Chinese Academy of Social Sciences, said space cooperation between China and Latin American countries is not an empty slogan, but covers a wide range of fields.

“China-Latin America space cooperation has helped Latin American countries build their aerospace systems, train high-quality space technology personnel and achieve new breakthroughs in the aerospace field. China-Latin America cooperation on remote-sensing satellites, communication satellites and in the commercial field has promoted connections among Latin American countries and improved people’s well-being.”

The following articles were originally published by the Xinhua News Agency.

Xi sends congratulatory letter to forum on space cooperation with LatAm, Caribbean countries

BEIJING, April 24 (Xinhua) — Chinese President Xi Jinping on Wednesday sent a congratulatory letter to the first China-Latin American and Caribbean States Space Cooperation Forum.

Noting that this year marks the 10th anniversary of the establishment of the China-CELAC (Community of Latin American and Caribbean States) Forum jointly announced by the leaders of the two sides, Xi said that China and the Latin American and Caribbean countries have seen prosperous development over the past decade in their cooperation in various fields within the framework of the China-CELAC Forum to usher in a new era featuring equality, mutual benefit, innovation, openness and tangible benefits for the people.

Xi said China and the Latin American and Caribbean countries have yielded fruitful results in space cooperation in recent years, including new progresses in the fields of remote sensing satellites, communication satellites and the deep space station network, which has played an important role in promoting scientific and technological progress, strengthening regional connectivity and improving people’s wellbeing.

The space cooperation forum, co-hosted by the China National Space Administration and the Hubei provincial government, started on Wednesday in Wuhan, capital of central China’s Hubei Province.

Yuan Longping, 7 September 1930 – 22 May 2021

We are mourning the death and celebrating the life of the world-famous agronomist Yuan Longping. Known as the ‘father of hybrid rice’, Yuan Longping worked tirelessly and selflessly his entire life in the battle against food poverty. His innovations helped to end malnutrition in China, and are currently in use throughout the world.

A biography and tribute can be found on CGTN.

Congratulations on the successful Mars landing

Infographic highlighting the China’s success in the realms of science and space exploration. In the space of just 72 years, China has transitioned from being one of the poorest and most backward countries in the world, ground down by imperialism, to being a global leader in science and technology. This has been made possible by China’s socialist system.