STEM

[Cadavre Exquis]

https://www.expansion.com/economia/financial-times/2025/09/26/68d69708e5fdea1f368b45a0.html

Saludos.

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https://elpais.com/clima-y-medio-ambiente/2025-09-30/jardineros-de-ostras-para-avanzar-en-la-regeneracion-ambiental-del-mar-menor.html

Saludos.

[Cadavre Exquis]

Figure · 2025.10.09 · Introducing Figure 03

Saludos.

[Cadavre Exquis]

Scientists Seek To Turbocharge a Natural Process That Cools the Earth
Posted by BeauHD on Thursday October 09, 2025 @11:30PM from the human-timescales dept.

fjo3 shares a report from the Washington Post:

Across vast stretches of farmland in southern Brazil, researchers at a carbon removal company are attempting to accelerate a natural process that normally unfolds over thousands or millions of years. The company, Terradot, is spreading tons of volcanic rock crushed into a fine dust over land where soybeans, sugar cane and other crops are grown. As rain percolates through the soil, chemical reactions pull carbon from the air and convert it into bicarbonate ions that eventually wash into the ocean, where the carbon remains stored. The technique, known as "enhanced rock weathering," is emerging as a promising approach to lock away carbon on a massive scale. Some researchers estimate the method has the potential to sequester billions of tons of carbon, helping slow global climate trends. Other major projects are underway across the globe and have collectively raised over a quarter-billion dollars. [...]

Terradot was founded in 2022 at Stanford, growing out of an independent study between James Kanoff, an undergraduate seeking large-scale carbon removal solutions, and Scott Fendorf, an Earth science professor. Terradot ran a pilot project across 250 hectares in Mexico and began operations in Brazil in late 2023. Since then, the company has spread about 100,000 tons of rock over 4,500 hectares. It has signed contracts to remove about 300,000 tons of carbon dioxide and is backed by a who's who of Silicon Valley. It expects to deliver its first carbon removal credit -- representing one metric ton of verified carbon dioxide removed -- by the end of this year and then scale up from there.

Saludos.

[Cadavre Exquis]

China Confirms Solar Panel Projects Are Irreversibly Changing Desert Ecosystems
Posted by msmash on Thursday October 09, 2025 @11:21AM from the pleasant-surprise dept.

An anonymous reader shares a report:

China's giant solar parks aren't just changing the power mix -- they may be changing the ground beneath them. Fresh field data point to cooler soils, extra moisture, and pockets of greening, though lasting ecological shifts will hinge on design and long-term care.

[...] A team studying one of the largest photovoltaic parks in China, the Gonghe project in the Talatan Desert, found a striking difference between what was happening under the panels and what lay just beyond. They used a detailed framework measuring dozens of indicators -- everything from soil chemistry to microbial life -- and discovered that the micro-environment beneath the panels was noticeably healthier. The reasons track with physics: shade cools the surface and slows evaporation, letting scarce soil moisture linger longer; field experiments in western China report measurable soil-moisture gains beneath shaded arrays.

Simple shade from panel rows can create a gentler microclimate at ground level, cutting wind stress and helping fragile seedlings establish. In other desert locations like Gansu and the Gobi, year-round field data tell a similar story. Soil temperatures beneath arrays tend to be cooler during the day and a bit warmer at night than surrounding ground, with humidity patterns shifting in tandem -- conditions that can make harsh surfaces more habitable when paired with basic land care. Even small shifts like these can help re-establish vegetation -- if combined with erosion control and water management. These aren't wildflowers blooming overnight, but they are signs that utility-scale solar can double as a modest micro-restorer.

Saludos.

[Cadavre Exquis]

https://www.pressreader.com/spain/el-economista/20251015/page/24/textview

La suma de la IA y la computación cuántica obsesiona a las 'big tech'

https://www.eleconomista.es/tecnologia/noticias/13591760/10/25/el-superordenador-cuantico-de-ibm-confirma-la-apuesta-de-la-multinacional-estadounidense-por-el-ecosistema-de-idi-vasco.html

https://www.diariovasco.com/economia/aterrizaje-donostia-superordenador-ibm-abre-nueva-era-20251012001048-nt.html

https://www.diariovasco.com/economia/ciencia-investigacion-progreso-20251012132147-nt.html

Saludos.

[Cadavre Exquis]

https://cincodias.elpais.com/companias/2025-10-14/pld-space-ultima-una-ronda-de-130-millones-ante-los-primeros-vuelos-de-demostracion.html

Saludos.

[Cadavre Exquis]

https://www.eleconomista.es/tecnologia/noticias/13594051/10/25/mikel-diez-ibm-hemos-dado-acceso-a-nuestro-superordenador-cuantico-de-san-sebastian-a-20-empresasy-22-centros-tecnologicos-y-queremos-abrir-la-red-a-nuevas-colaboraciones.html

Saludos.

[Cadavre Exquis]

https://www.eleconomista.es/mercados-cotizaciones/noticias/13612949/10/25/del-quirofano-a-la-impresora-las-companias-que-estan-cambiando-la-historia-de-la-medicina.html

Saludos.

[Cadavre Exquis]

China Achieves Thorium-Uranium Conversion Within Molten Salt Reactor
Posted by BeauHD on Wednesday November 05, 2025 @02:00AM from the first-of-its-kind dept.

Longtime Slashdot reader hackingbear writes:

South China Morning Post, citing Chinese state media, reported that an experimental reactor developed in the Gobi Desert by the Chinese Academy of Sciences' Shanghai Institute of Applied Physics has achieved thorium-to-uranium fuel conversion, paving the way for an almost endless supply of nuclear energy. It is the first time in the world that scientists have been able to acquire experimental data on thorium operations from inside a molten salt reactor according to a report by Science and Technology Daily. Thorium is much more abundant and accessible than uranium and has enormous energy potential. One mine tailings site in Inner Mongolia is estimated to hold enough of the element to power China entirely for more than 1,000 years.

At the heart of the breakthrough is a process known as in-core thorium-to-uranium conversion that transforms naturally occurring thorium-232 into uranium-233 -- a fissile isotope capable of sustaining nuclear chain reactions within the reactor itself. Thorium (Th-232) is not itself fissile and so is not directly usable in a thermal neutron reactor. Thorium fuels therefore need a fissile material as a 'driver' so that a chain reaction (and thus supply of surplus neutrons) can be maintained. The only fissile driver options are U-233, U-235 or Pu-239. (None of these are easy to supply.) In the 1960s, the Oak Ridge National Laboratory (USA) designed and built a demonstration MSR using U-233, derived externally from thorium as the main fissile driver.

Saludos.

[pollo]

Joder, el 90% de lo que sale aquí son vendemotos contando unas películas que ni Spielberg. Con mucha vergüenza ajena añado.

[Cadavre Exquis]

https://x.com/OperadorNuclear/status/1985952847482044610

Saludos.

[Cadavre Exquis]

New gel restores dental enamel and could revolutionise tooth repair

Jane Icke · 2025.11.04

A new material has been used to create a gel that can repair and regenerate tooth enamel, opening up new possibilities for effective and long-lasting preventive and restorative dental treatment.

Scientists from the University of Nottingham’s School of Pharmacy and Department of Chemical and Environmental Engineering, in collaboration with an international team of researchers, have developed a bioinspired material that has the potential to regenerate demineralized or eroded enamel, strengthen healthy enamel, and prevent future decay. The findings have been published today in Nature Communications.

The gel can be rapidly applied to teeth in the same way dentists currently apply standard fluoride treatments. However, this new protein-based gel is fluoride free and works by mimicking key features of the natural proteins that guide the growth of dental enamel in infancy. When applied, the gel creates a thin and robust layer that impregnates teeth, filling holes and cracks in them. It then functions as a scaffold that takes calcium and phosphate ions from saliva and promotes the controlled growth of new mineral in a process called epitaxial mineralization. This enables the new mineral to be organized and integrated to the underlying natural tissue while recovering both the structure and properties of natural healthy enamel.

Electron microscopy images of a tooth with demineralised enamel showing eroded apatite crystals (left) and a similar demineralised tooth after a 2-week treatment showing epitaxially regenerated enamel crystals (right).

The new material can also be applied on top of exposed dentine, growing an enamel-like layer on top of dentine, which has many benefits including treating hypersensitivity or enhancing the bonding of dental restorations.

Enamel degradation is a major contributor to tooth decay and is associated to dental problems affecting almost 50% of the world’s population. These problems can lead to infections and tooth loss, and can also be associated with conditions such as diabetes and cardiovascular disease. Enamel does not naturally regenerate; once you lose it is gone forever. There is currently no solution available that can effectively regrow enamel. Current treatments such as fluoride varnishes and remineralisation solutions only alleviate the symptoms of lost enamel.

Dr Abshar Hasan, a Postdoctoral Fellow and leading author of the study, said: “Dental enamel has a unique structure, which gives enamel its remarkable properties that protect our teeth throughout life against physical, chemical, and thermal insults. When our material is applied to demineralized or eroded enamel, or exposed dentine, the material promotes the growth of crystals in an integrated and organized manner, recovering the architecture of our natural healthy enamel."

We have tested the mechanical properties of these regenerated tissues under conditions simulating ‘real-life situations’ such as tooth brushing, chewing, and exposure to acidic foods, and found that the regenerated enamel behaves just like healthy enamel.

Dr Abshar Hasan

We are very excited because the technology has been designed with the clinician and patient in mind. It is safe, can be easily and rapidly applied, and it is scalable. Also, the technology is versatile, which opens the opportunity to be translated into multiple types of products to help patients of all ages suffering from a variety of dental problems associated with loss of enamel and exposed dentine. We have started this process with our start-up company Mintech-Bio and hope to have a first product out next year; this innovation could soon be helping patients worldwide.

Professor Alvaro Mata, Chair in Biomedical Engineering & Biomaterials

Saludos.