Friday, March 28, 2025

Lines of wounded at Myanmar hospital after powerful quake

Agence France-Presse
March 28, 2025 

A hospital bed is pushed down a corridor. (Shutterstock)


by Joe STENSON with Chayanit ITTHIPONGMAETEE in Bangkok

A stream of casualties were rushed to the hospital in Naypyidaw -- some in cars, others in pickups, and others carried on stretchers, their bodies bloody and covered in dust after a huge quakeRows of wounded lay outside the emergency department of the 1,000-bed hospital in Myanmar's capital Naypyidaw on Friday, some writhing in pain and others in shock after a powerful earthquake.

A stream of casualties were brought to the hospital -- some in cars, others in pickups, and others carried on stretchers, their bodies bloody and covered in dust.

"This is a mass casualty area", a hospital official said, as they ushered journalists away from the treatment area.

The hospital itself was hit by the terrifying tremors, which buckled roads and ripped tarmac apart as the ground vibrated violently for around half a minute.

The hospital's emergency department was itself heavily damaged, a car crushed under the heavy concrete of its fallen entrance.

"Many injured people have been arriving, I haven't seen anything like this before," a doctor at the hospital told AFP.

"We are trying to handle the situation. I'm so exhausted."Some cried in pain, others lay still as relatives sought to comfort them, intravenous drips from their arms.

"Hundreds of injured people are arriving... but the emergency building here also collapsed," security officials at the hospital said.

Others sat stunned with their head in their hands, blood caking their faces and limbs.

Myanmar's military chief Min Aung Hlaing visited the hospital, surveying the wounded lying on stretchers.


- 'Help me' -

The Myanmar capital is some 250 kilometres (150 miles) south from the epicentre of the 7.7-magnitude shallow tremor, that hit northwest of the city of Sagaing on Friday afternoon, according to the United States Geological Survey.

A 6.4-magnitude aftershock hit the same area minutes later.

A team of AFP journalists were at the National Museum in Naypyidaw when the earthquake struck, with chunks of the ceiling falling and cracks running up the walls.

The road to one of the biggest hospitals in Naypyidaw was jammed with traffic.

As ambulance weaved between vehicles, and shouting paramedic pleaded to be allowed to get through to reach the care of doctors.

Those inside ran outside, many trembling and tearful, and frantically trying to call family members on their phones to check if they were alive.


Powerful tremors were also felt in neighbouring China and in Thailand, where buildings in the capital Bangkok were shaken violently.

Worapat Sukthai, deputy police chief of Bangkok's Bang Sue district, said he could hear the sound of people screaming for aid trapped in the debris after a 30-story under-construction tower block collapse.

"I heard people calling for help, saying help me," he told AFP. "We estimate that hundreds of people are injured but we are still determining the number of casualties."

"I fear many lives have been lost. We have never experienced an earthquake with such a devastating impact before."


Bangkok residents are used to tremors -- and know to find a safe space outside if possible -- but many said the force on Friday came as a shock.

"I was shopping inside a mall when I noticed some signs moving, so I quickly ran outside," said Attapong Sukyimnoi, a broker. "I knew I had to get to an open space -- it was instinct."

burs-pjm/hmn

© Agence France-Presse

Scores of workers trapped in Bangkok building collapse after Myanmar earthquake




Copyright Chutima Lalit/Copyright 2025 The AP. All rights reserved.
 VIDEO

By Tamsin Paternoster & AP
Published on 28/03/2025 

Tremors from the powerful quake caused deaths and damages in the Thai capital of Bangkok, thousands of miles away from the earthquake's epicentre.

A strong 7.7 magnitude earthquake struck early afternoon in Myanmar on Friday, causing officials to declare a state of emergency in Myanmar and Bangkok, the capital of neighbouring Thailand.

At least three people were killed and 90 construction workers remain missing after the quake caused a 30-storey building in the capital to collapse in Bangkok's Chatuchak Park area.

Seven were rescued from the rubble of the collapsed building, the National Institute for Emergency Medicine said in a Facebook post.

A video circulated on social media showed the multi-story structure sway and crumble into a cloud of dust as onlookers screamed and ran.

Thai authorities have declared a state of emergency in response to the major earthquake hitting the city, Prime Minister Paetongtarn Shinawatra said on Friday.

The US Geological Survey (USGS) said the earthquake was shallow with a depth of 10 kilometres. Its epicentre was near the Burmese city of Sagaing, close to Mandalay.

A second quake, with a magnitude of 6.4, shook the area 12 minutes later.

Rescuers work at the site a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. Wason Wanichakorn/Copyright 2025 The AP. All rights reserved


State of emergency in Myanmar

In Myanmar, state-run MRTV said the the military-run government declared a state of emergency across six regions and states.

Major General Zaw Min Tun, a military government spokesperson said blood was in high demand in the hospitals in earthquakes-hit areas, especially Mandalay, Sagaing, and Naypyitaw.

He urged blood donors to contact the hospitals as soon as possible.

The Red Cross said initial reports from the ground suggested the earthquake caused "significant damage", adding that damaged power lines were preventing their teams from reaching the affected Mandalay and Sagaing regions.


It is not yet known how many casualties there are as a result of the quake hitting the country, where many areas are not easily accessible and the government is embroiled in civil war after a coup in 2021.

AFP reported that the ruling miltary junta made a rare request for international humanitarian aid, leaving aid agencies scrambling to assess the humanitarian needs and work out how to reach the country, which is isolated from the outside world.

In the Saigaing region, a 90-year old bridge collapsed as sections of the highway connecting Mandalay to Yangon were damaged. In the capital Naypyitaw, religious shrines were damaged, with parts toppling to the ground.
Vehicles make their way near a road damaged by an earthquake Friday, March 28, 2025, in Naypyitaw, Myanmar.Aung Shine Oo/Copyright 2025 The AP. All rights reserved.

The quake caused alarms to go off in buildings across Bangkok, and thousands of residents ran down the staircases of high-rise apartments and hotels onto the street. Videos on social media showed people gathering in the streets of the Thai capital.

The tremors were forceful enough to send water sloshing out of pools, some high up in high-rises, as the tremor shook.

Paul Vincent, a tourist visiting from England, was at a streetside bar when the quake struck.

“When I saw the building, oh my God, that’s when ... it hit me,” he said. “There was people crying in the streets and, you know, the panic was horrendous really.”

Thai Prime Minister Paetongtarn Shinawatra warned Bangkok residents to remain calm as the city prepared an emergency response.

“I’d like to ask everyone to stay calm and do not panic, but please be careful,” Shinawatra said, warning that there could be possible aftershocks.

More than 17 million people live in the greater Bangkok area, many of whom are in high-rise apartments.

Powerful earthquake rocks Myanmar and Thailand, killing at least 3 in Bangkok high-rise collapse

DAVID RISING and JINTAMAS SAKSORNCHAI
Fri, March 28, 2025

BANGKOK (AP) — A powerful earthquake rocked Myanmar and neighboring Thailand on Friday, killing at least three people in Bangkok and burying dozens when a high-rise building under construction collapsed. Footage shared on social media from Myanmar's second-largest city showed widespread destruction, raising fears that many were trapped under the rubble or killed.

The 7.7 magnitude quake, with an epicenter near Mandalay in Myanmar, struck at midday and was followed by a strong 6.4 magnitude aftershock.

The extent of death, injury and destruction — especially in Myanmar, which is embroiled in a civil war and where information is tightly controlled at the best of times — was not yet clear.

Myanmar's government said blood was in high demand in the hardest-hit areas. Images of buckled and cracked roads and damaged highways as well as the collapse of a bridge and dam raised further concerns about how rescuers would even reach some areas in a country already enduring a widespread humanitarian crisis.

Near Bangkok’s popular Chatuchak market, a 33-story building under construction, with a crane on top, crumpled into a cloud of dust, and onlookers could be seen screaming and running in a video posted on social media.

The sound of sirens echoed throughout central Bangkok and vehicles filled the streets, leaving some of the city’s already congested streets gridlocked. The elevated rapid transit system and subway shut down.

While the area where the quake struck is prone to earthquakes, they are usually not so big and it is rare for them to felt in the Thai capital, which sits on a river delta and is at moderate risk for quakes.

April Kanichawanakul, who works in an office building in Bangkok, initially didn’t even realize it was an earthquake, the first she’d ever experienced. “I just thought I was dizzy,” she said.

She and her colleagues ran downstairs from the 10th floor of their building and waited outside for a signal that it was safe to go back in.

Crane-topped building collapsed in a cloud of dust

In Bangkok, at least three people were killed in the building collapse and 90 were missing, according to Defense Minister Phumtham Wechayachai. He offered no more details about the ongoing rescue efforts but first responders said that seven people had been rescued so far from the area.

At least two of the dead were construction workers who were killed by falling rubble or debris, rescue worker Songwut Wangpon told reporters. The building was being built by the China Railway Construction Corporation for Thailand’s government auditor general.

Elsewhere, people in Bangkok evacuated from their buildings were cautioned to stay outside in case there were more aftershocks.

The U.S. Geological Survey and Germany’s GFZ center for geosciences said the earthquake was a shallow 10 kilometers (6.2 miles), according to preliminary reports. Shallower earthquakes tend to cause more damage.

Screaming and panic as buildings swayed

Bangkok's city hall declared the city a disaster area to facilitate the response. The greater Bangkok area is home to more than 17 million people, many of whom live in high-rise apartments.

“All of a sudden the whole building began to move. Immediately there was screaming and a lot of panic,” said Fraser Morton, a tourist from Scotland, who was in one of Bangkok's many malls.

“I just started walking calmly at first but then the building started really moving, yeah, a lot of screaming, a lot of panic, people running the wrong way down the escalators.”

Like Morton, thousands of people poured into Benjasiri Park from nearby shopping malls, high rises and apartment buildings along Bangkok’s busy Sukhumvit Road.

Many were on phones trying to reach loved ones as others sought shade from the hot early afternoon sun.

“I got outside and then looked up at the building and the whole building was moving, dust and debris, it was pretty intense,” Morton said. “Lots of chaos.”

Voranoot Thirawat, a lawyer working in central Bangkok, said her first indication that something was wrong came when she saw a light swinging back and forth. Then she heard the building creaking as it moved back and forth.

She and her colleagues ran down 12 flights of stairs. “In my lifetime, there was no earthquake like this in Bangkok,” she said.

Paul Vincent, a tourist visiting from England, was at a streetside bar when the quake struck.

“The next thing, everybody came on the street, so there was a lot of screaming and panicking, which obviously made it a lot worse,” he said.

As he came onto the street himself, he said he saw a high-rise building swaying and water falling from a rooftop pool.

“There was people crying in the streets and, you know, the panic was horrendous really,” he said.

Bridge and monastery collapse and dam bursts in Myanmar

In Mandalay, the earthquake reportedly brought down multiple buildings, including the Ma Soe Yane monastery, one of the largest in the city, and damaged the former royal palace. Meanwhile, Christian Aid said its partners and colleagues on the ground reported that a dam burst in the city, causing water levels to rise in the lowland areas in the area.

A video posted online showed robed monks in the street shooting video of the multistory monastery before it suddenly fell into the ground. It was not immediately clear whether anyone was harmed.

In the Sagaing region just southwest of the city, a 90-year-old bridge collapsed, and some sections of the highway connecting Mandalay and Myanmar’s largest city, Yangon, were also damaged.

The military seized power from the elected government of Aung San Suu Kyi in February 2021, and is now involved in a bloody civil war with long-established militias and newly formed pro-democracy ones.

Government forces have lost control of much of Myanmar, and many places are incredibly dangerous to access or simply out of reach for aid groups. More than 3 million people have been displaced by the fighting and nearly 20 million are in need, according to the United Nations.

The Red Cross said downed power lines added to challenges for their teams trying to reach several hard-hit areas.

“This disaster will have left people devastated and in need of drinking water, food and shelter," said Julie Mehigan, head of Asia, Middle East & Europe for Christian Aid. “Myanmar is one of the least developed countries in the world. Even before this heartbreaking earthquake, we know conflict and displacement has left countless people in real need.”

Myanmar’s government declared a state of emergency in six regions and states including the capital Naypyitaw and Mandalay. It was not clear what the declaration meant since the entire country has been under a state of emergency since 2021.

Residents in Yangon rushed out of their homes when the quake struck. In the capital Naypyitaw, the quake damaged religious shrines, sending parts toppling to the ground, and some homes.

Maj. Gen. Zaw Min Tun, the military government’s spokesperson, told state television MRTV that blood was in high demand in the hospitals in earthquakes-hit areas, especially Mandalay, Sagaing, and Naypyitaw. He urged blood donors to contact the hospitals as soon as possible.

Injuries reported in China

To the northeast, the earthquake was felt in Yunnan and Sichuan provinces in China and caused damage to houses and injuries in the city of Ruili on the border with Myanmar, according to Chinese media reports.

Videos that one outlet said it had received from a person in Ruili showed building debris littering a street and a person being wheeled in a stretcher toward an ambulance.

The shaking in Mangshi, a Chinese city about 100 kilometers (60 miles) northeast of Ruili, was so strong that people couldn’t stand, one resident told The Paper, an online media outlet.

_____

Adam Schreck, Haruka Naga, Jerry Harmer, Grant Peck and Penny Wang in Bangkok, Jamey Keaten in Geneva and Ken Moritsugu in Beijing contributed to this report.





Rescuers work at the site a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Wason Wanichakorn)ASSOCIATED PRESS

Hospital patients lay on beds outdoors after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

Rescuers carry an injured from the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

A woman reacts as she watches rescuers at the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Wason Wanichakorn)ASSOCIATED PRESS

A rescuer walks at the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

Damaged pagodas are seen after an earthquake, Friday, March 28, 2025 in Naypyitaw, Myanmar. (AP Photo/Aung Shine Oo)ASSOCIATED PRESS

Rescuers work at the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

Children walk near a damaged monastery compound after an earthquake, Friday, March 28, 2025 in Naypyitaw, Myanmar. (AP Photo/Aung Shine Oo)ASSOCIATED PRESS

Rescuers tend to injured from the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

People who evacuated from buildings following earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Chutima Lalit)ASSOCIATED PRESS

The bodies of victims of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake lie on the ground in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Wason Wanichakorn)ASSOCIATED PRESS

A crane is seen damaged on the facade of an under-construction building after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

People who evacuated from buildings following earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Chutima Lalit)ASSOCIATED PRESS

Rescuers work at the site of a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

A bridge that connects two high-rises is seen damaged after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Sakchai Lalit)ASSOCIATED PRESS

Damaged pagodas are seen after an earthquake, Friday, March 28, 2025 in Naypyitaw, Myanmar. (AP Photo/Aung Shine Oo)ASSOCIATED PRESS

People take shelter outdoors after an earthquake shook nearby high-rises in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/David Cohen)ASSOCIATED PRESS

People who evacuated from buildings following earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Chutima Lalit)ASSOCIATED PRESS

A Buddhist monk walks near a damaged building at a monastery compound after an earthquake, Friday, March 28, 2025 in Naypyitaw, Myanmar. (AP Photo/Aung Shine Oo)ASSOCIATED PRESS

Workers at the Ikea in a nearby high-rise shopping mall and others seek shelter in Bangkok's Benjasiri Park after an earthquake on Friday, March 28, 2025. (AP Photo/Adam Schreck)ASSOCIATED PRESS

Rescuers work at the site a high-rise building under construction that collapsed after a 7.7 magnitude earthquake in Bangkok, Thailand, Friday, March 28, 2025. (AP Photo/Wason Wanichakorn)ASSOCIATED PRESS

A damaged monastery is seen after an earthquake, Friday, March 28, 2025 in Naypyitaw, Myanmar. (AP Photo/Aung Shine Oo)ASSOCIATED PRESS

 

Understanding the energy transition: How models shape the future



Veit Hagenmeyer (KIT) and Klaus Stierstorfer (University of Münster) receive funding for a Reinhart Koselleck project on critical analysis of energy transition models and their effects



Karlsruher Institut für Technologie (KIT)
Professor Veit Hagenmeyer seeks solutions for stable, economical, and secure energy supplies 

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Professor Veit Hagenmeyer seeks solutions for stable, economical, and secure energy supplies

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Credit: Amadeus Bramsiepe, KIT





“Our projections about future energy use are developed using models, and the models are used to make policy. But if we don’t understand how these models work, then we have to believe what we’re told. That’s a dangerous situation,” said Professor Veit Hagenmeyer, head of KIT’s Institute for Automation and Applied Informatics, in explaining the need for a thorough examination of current practices for modeling the energy transition. In the transdisciplinary research project entitled Poetik der Modelle (poetics of models), Hagenmeyer is working with literary scholars Professor Klaus Stierstorfer and Professor Matthias Erdbeer from the University of Münster to examine how energy transition models are not only technical calculations and constructs but also narratives for shaping the future. The DFG is funding the research as a Reinhart Koselleck project for exceptionally innovative, high-risk research with EUR 1 million over a period of 5 years.

Hidden Premises of Energy Transition Models

Technical models are a central tool in energy research. They are used to calculate energy requirements, manage supply networks and inform decision-making in government and business. But their underlying assumptions are often hidden. “Models aren’t neutral. They’re based on assumptions about technology trends, political conditions, and human behavior. Many of these assumptions remain hidden,” Hagenmeyer said, adding that this lack of visibility could cause scientific findings to be uncritically adopted or completely called into question. Aims of the project include revealing the hidden mechanisms of model building, determining which narrative patterns are included in the models, and finding new ways to make energy transition models more transparent, participative, and inclusive.

An important driving force behind this innovative approach was Professor Armin Grunwald, who heads KIT’s Institute for Technology Assessment and Systems Analysis (ITAS) and the Office of Technology Assessment at the German Bundestag. “We often need models when advising policymakers, for example in the German parliament. We need to understand those models, especially their assumptions and premises. If we don’t, our advice could be biased and lead to poor policy decisions,” Grunwald said. Along with Grunwald, Professor Daniel Lang, also from ITAS, is another partner in the project. His expertise in real-world lab research complements the project’s transdisciplinary perspective and helps to ensure that the social dimension of the energy transition is given thorough consideration.

Real-world Labs at KIT Involved

To ensure that the assumptions behind models are not only scientifically convincing but also successful in practice, researchers are trying to simulate future energy systems under conditions that are as realistic as possible. With real-world labs for energy transition research, such as the Energy Lab (Europe’s largest research infrastructure for renewable energy) or the Karlsruhe Real-World Lab for Sustainable Climate Protection (for a participative energy transition), KIT has created an extensive infrastructure that is being integrated into the research project. “So the project isn’t only investigating which assumptions energy transition models are based on, it’s also investigating how real-world labs work as places of scientific and social give-and-take about the models,” Hagenmeyer said. “Real-world labs are test centers for technical scenarios, and as such they’re now becoming objects of scientific analysis themselves. How does the way they’re presented affect thinking about the models implemented there? Which narratives arise when the public interacts with these models?”

Overcoming Reservations about the Energy Transition

“The energy transition is both a technical and a narrative challenge,” Hagenmeyer noted. Accordingly, the Poetik der Modelle research project looks beyond the technical issues of transforming the energy system, beginning precisely where reservations about the energy transition arise: in communicating about a desirable future among scientists, policymakers and the public. “As long as people don’t understand where scenarios about the future of the energy supply come from, the public discourse will be marked by uncertainty, mistrust, and simplistic demands. Our project aims to remove these uncertainties and show new ways for scientists, policymakers and the public to work together to develop viable energy strategies. We can only actively shape the future when we understand how it’s modeled,” Hagenmeyer said.




More information

More about the KIT Energy Center


Being “The Research University in the Helmholtz Association”, KIT creates and imparts knowledge for the society and the environment. It is the objective to make significant contributions to the global challenges in the fields of energy, mobility, and information. For this, about 10,000 employees cooperate in a broad range of disciplines in natural sciences, engineering sciences, economics, and the humanities and social sciences. KIT prepares its 22,800 students for responsible tasks in society, industry, and science by offering research-based study programs. Innovation efforts at KIT build a bridge between important scientific findings and their application for the benefit of society, economic prosperity, and the preservation of our natural basis of life. KIT is one of the German universities of excellence.


 

Soil carbon-degrading enzyme activities were more sensitive to warming in the alpine meadow than swamp meadow





Higher Education Press

Figure 1 

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Soil extracellular enzyme activities in the surface (0-5 cm) and subsurface (5-20 cm) layers of alpine meadow (A-F) and swamp meadow (G-L) under different warming treatments.CK: control treatment; 3-yr W: 3-year warming treatment; 6-yr W: 6-year warming treatment. Yellow, blue, and red dots indicate control, lower, and higher warming treatments, respectively, and while grey dots represent raw data collected before the warming experiment started. Different lowercase letters indicate significant differences (p < 0.05) between treatments at the same depth; non-significant differences are not marked. The straight lines indicate significant relationships (p < 0.05) between soil enzyme activities and warming duration under lower (blue line) and higher (red line) warming.

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Credit: Higher Education Press




The continuously increasing temperature is expected to accelerate soil organic carbon (SOC) decomposition and release additional CO2 into the atmosphere by stimulating microbial activity. However, there remains significant uncertainty regarding the response of microbial activity to warming, which hinders accurate predictions of the SOC-climate feedback. Extracellular enzymes produced by soil microbes are the primary agents of SOC decomposition. Investigating soil carbon-degrading enzymes has improved our understanding of the physiological mechanisms underlying the SOC response to warming. This study demonstrates that the activities of soil extracellular enzymes were significantly altered in the alpine meadow, but not significantly in the swamp meadow, which coincided with the SOC content of these grasslands. The observed disparities can be attributed to variations in enzyme types, as well as the unique physicochemical and microbiological properties of each meadow type. The researchers' findings were published on March, 2025, in Soil Ecology Letters.

An in-situ warming experiment, involving the manipulation of both warming magnitude and duration, was conducted in alpine and swamp meadows simultaneously in a representative permafrost zone of the Tibetan Plateau by Ruiying Chang's team at the Institute of Mountain Hazards and Environment, Chinese Academy of Sciences. They measured the activities of three typical soil carbon-degrading enzymes (β-1, 4-glucosidase (BG), peroxidase (PER), phenol oxidase (POX)) after 3 and 6 years of warming at magnitudes of +2.4 and +4.9°C above the ambient temperature, respectively.

In this study, they found that the duration of warming plays a varying role in regulating the responses of enzyme activities and SOC storage in different types of alpine grasslands. A time-cumulative effect of warming on carbon-degrading enzyme activities was observed in the alpine meadow. After six years of warming, BG activity was significantly increased, while POX activity and the ratio of oxidase to hydrolase activities were decreased. These changes coincided with an increase in SOC content in the grassland. In contrast, neither the warming intensity nor the duration had a consistent impact on soil enzyme activities or SOC content in the swamp meadow. The primary factors influencing soil enzyme activities under warming in the alpine meadow were dissolved organic carbon and above-ground biomass, while soil water content was the main factor influencing enzyme activities in the swamp meadow. The variation in above-ground biomass, soil physicochemical, and microbiological properties can account for the discrepancies (a negative correlation (p < 0.05) between SOC and oxidase/hydrolase activity was found in the alpine meadow but not in the swamp meadow) between the two meadows. This indicates that carbon input and enzyme characteristics jointly determine how SOC responds to warming in alpine grasslands.

The study investigated the responses of SOC and soil carbon-degrading enzyme activities to different warming magnitudes and durations and revealed the enzymatic mechanisms underlying SOC responses. Furthermore, they emphasized the need to consider the time-cumulative effects of warming on plant growth and enzyme ratios in carbon models to improve the accuracy of model predictions for soil carbon dynamics in permafrost regions.

DOI: 10.1007/s42832-024-0291-x

 

Only few disinfectants are capable of inactivating hepatitis A virus




Virology

Ruhr-University Bochum

Doorknob 

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Only a few surface disinfectants sufficiently reduce the risk of infection from hepatitis A virus. 

 

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Credit: © RUB, Marquard




Two effective agents

The researchers applied HAV particles to steel surfaces to determine the number of infectious virus particles over 60 days. “We detected infectious particles on the surface for up to 40 days, which indicates a high stability of the virus,” says doctoral student Lilli Pottkämper. It took around 18 days for the number of infectious particles to be reduced by half. 
The research team then applied various disinfectants to the samples. Among the nine products tested were alcohol-based, aldehyde-based, one peracetic acid-based, one oxygen-based and one hydrogen peroxide-based. “With the exception of the two aldehyde-based products, none of the disinfectants reduced the risk of infection to a sufficient extent,” points out Lilli Pottkämper. 

Preventing infection

The extent to which infection via contaminated surfaces contributes to hepatitis A infection rates is not known. The virus isexcreted via faeces and then ingested orally, often via contaminated food or drinking water. “As matters stand, effective surface disinfection could help to prevent infection, especially in the case of high infection rates,” concludes Lilli Pottkämper. 

 

Cleaner fuels, greener industries: A game-changer for advanced zeolite catalyst development



Researchers pioneer a new approach that enables the synthesis of zeolites with diverse aluminum contents



Institute of Science Tokyo

Synthesis of  Zeolites by Blending Precursors with Common Building Blocks 

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This approach extends the limits of AI content is zeolites and broadens their range of applications as cataysis.

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Credit: Institute of Science Tokyo




A novel ‘zeolite blending’ method has successfully produced CON-type zeolites with unprecedentedly high aluminum content, report researchers from Institute of Science Tokyo. By combining multiple zeolite precursors to guide the synthesis process, this innovative strategy overcomes long-standing limitations in controlling aluminum content in zeolite frameworks. The proposed approach will open new possibilities for catalyst development across various industrial applications, including petrochemical processing, fine chemicals production, and environmental remediation.

Zeolites, crystalline porous materials with ordered channels and cavities, serve as efficient catalysts in many industrial processes due to their unique structural properties. These versatile materials are known for their ability to selectively facilitate chemical reactions at their acidic sites, which are created when aluminum (Al) atoms are incorporated into their silica framework. Thus, the Al content directly influences a zeolite’s acidity and catalytic behavior, making precise control over this parameter crucial for optimizing their performance.

However, despite decades of research and various synthesis methods, scientists still struggle to precisely control the Al content in certain zeolite structures. This is particularly true for CON-type zeolites, where achieving a silicon-to-aluminum (Si/Al) ratio below 100 through direct synthesis has remained a significant challenge.

Fortunately, in a recent study made available online on February 10, 2025 and published in Volume 64, Issue 11 of Angewandte Chemie International Edition on March 10, 2025, a research team led by Professor Toshiyuki Yokoi from Institute of Science Tokyo, Japan, developed an innovative approach that overcomes this long-standing limitation. The team pioneered a novel synthesis method, called ‘zeolite blending,’ that uses multiple types of zeolites as starting materials to directly crystallize zeolites with previously unattainable compositions.

The research team employed an interzeolite conversion/transformation method, focusing on the common composite building units (CBUs) shared between precursor zeolites and the target structure. Initially using single zeolite precursors, they successfully synthesized CON-type zeolites with a Si/Al ratio of approximately 40—already an improvement over conventional method. However, the real breakthrough came when they combined multiple zeolite types as starting materials.

The researchers discovered that Beta zeolite served as an effective base material while adding small amounts of MFI-type zeolite significantly enhanced the formation of high-aluminum CON-type structures. Simply put, this blending approach strategically combined the necessary building blocks—the CBUs—from different zeolite frameworks, creating an optimal environment for the crystallization of the target structure with the desired Al content. “This strategy enabled us to obtain CON-type zeolites with a Si/Al ratio of approximately 20, which could not be achieved with a single zeolite precursor. It represents the first instance of the direct synthesis of zeolites with such a high Al content on a global scale,” highlights Yokoi.

The resulting high-Al CON-type zeolites demonstrated superior properties compared to those produced through conventional post-treatment methods, including smaller particle sizes and improved Al distribution. These characteristics make them particularly promising for applications in catalysis, especially for the methanol-to-olefin reaction—a critical process in the production of valuable petrochemicals from alternative feedstocks.

Beyond this immediate success with CON-type zeolites, the proposed zeolite blending method opens new possibilities for synthesizing various zeolite structures with previously unattainable compositions. “Further analysis on this blending method, like the physicochemical properties of the starting materials and their role, is currently in progress,” notes Yokoi.

Overall, this newfound approach could lead to a paradigm shift in zeolite synthesis methodologies, potentially enabling the development of new catalysts with enhanced performance for industrial applications. By expanding the compositional range of zeolites, this research not only advances our fundamental understanding of zeolite crystallization but also paves the way for more efficient and sustainable catalytic processes.

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About Institute of Science Tokyo (Science Tokyo)

Institute of Science Tokyo (Science Tokyo) was established on October 1, 2024, following the merger between Tokyo Medical and Dental University (TMDU) and Tokyo Institute of Technology (Tokyo Tech), with the mission of “Advancing science and human wellbeing to create value for and with society.”

https://www.isct.ac.jp/en