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MA Alexander Stark ♥ Laborpraxis Worldwide

MA Alexander Stark

Journalist und Übersetzer

Alexander Stark ist freier Mitarbeiter bei PROCESS, ETMM, LAB worldwide

Articles of the author

Bosch’s rapid coronavirus test delivers results for positive samples in less than 30 minutes. (Bosch)
Latest PCR Developments

Rapid Testing: Secret Weapon Against Covid-19

Nearly all of us have in one way or another come into contact with PCR tests in recent months. Polymerase chain reaction (PCR) only requires a small DNA sample of the virus to detect an infection with Covid-19. In recent weeks and months, companies have successfully launched ever faster test kits — some of which we are presenting in this article.

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The new device fits around an Ambu bag (blue), which hospitals already have on hand in abundance. Designed to be squeezed by hand, instead they are squeezed by mechanical paddles (center) driven by a small motor. This directs air through a tube which is placed in the patient's airway. (Courtesy of the researchers)
USA: Battling Covid-19

Open-Source, Low-Cost Ventilator for Corona Patients

One of the most pressing shortages facing hospitals during the Covid-19 emergency is a lack of ventilators. These machines can keep patients breathing when they no longer can on their own, and are quite expensive. Now, a rapidly assembled volunteer team of engineers, physicians, computer scientists, and others, centered at MIT, is working to implement a safe, inexpensive alternative for emergency use, which could be built quickly around the world.

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Efsa’s experts identified relevant control activities that food business operators can implement to lower the risks of contamination of frozen vegetables. (Efsa)
Italy: Food Safety

Listeria: How Dangerous are Frozen Vegetables?

The European Food Safety Authority (EFSA) has assessed the risks to public health from Listeria contamination of vegetables that are blanched — scalded in hot water or steam for a short time — before they are frozen. They conclude that the risks associated with the consumption of these products is lower than for ready-to-eat foods such as smoked fish, cooked meat, sausages, pâté, soft cheese.

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A male stickleback (Gasterosteus aculeatus) during spawning time. (Joakim Hansen/Azote)
Sweden: Ecology

A Wave of Sticklebacks: How a Tiny Fish Takes Over an Entire Ecosystem

Large numbers of three-spined stickleback have gradually taken over larger parts of the Baltic Sea’s coastal ecosystem, shows a new scientific study. Stickleback is a small prey fish common in aquatic food webs across temperate Europe. The stickleback contributes to local ecosystem ‘regime shifts’, where young-of-the-year pike and perch decline in individual bays, and these shifts gradually spread like a wave from the outer archipelago into the mainland coast.

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Bosch’s rapid coronavirus test delivers results for positive samples in less than 30 minutes. (Bosch)
Latest PCR Developments

Rapid Testing: Secret Weapon Against Covid-19

Nearly all of us have in one way or another come into contact with PCR tests in recent months. Polymerase chain reaction (PCR) only requires a small DNA sample of the virus to detect an infection with Covid-19. In recent weeks and months, companies have successfully launched ever faster test kits — some of which we are presenting in this article.

Read on
 Eating fish, but not meat, offers key health benefits, a study shows. (Public Domain)
UK: Dietary Studies

New Study Gives Heart Attack to Meat Eaters

Compared with meat eaters, fish eaters have a lower risk of several adverse heart diseases, including stroke. These findings, which were part of new research looking at the diets and risk of developing or dying from heart diseases of more than 420,000 people in the UK, also concluded that vegetarianism was associated with a lower risk of developing heart disease.

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Artists conception of a biosensor detecting a target molecule. (University of Washington)
USA: New Corona Test

This Sensors Can Quickly Spot Coronavirus Infections

Scientists have created a new way to detect the proteins that make up the pandemic coronavirus, as well as antibodies against it. They designed protein-based biosensors that glow when mixed with components of the virus or specific Covid-19 antibodies. This breakthrough could enable faster and more widespread testing in the near future.

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A discovery by Scripps Research scientists may offer insight into treating blood disorders such as sickle cell anemia. (The Scripps Research Institute)
USA: Sickle Cell Diseases

How Blood Cells Keep Their Shape

In a new study, Velia Fowler, PhD, and her lab at The Scripps Research Institute report that a protein called myosin IIA contracts to give red blood cells their distinctive shape. The findings, published this week in the journal Proceedings of the National Academy of Sciences, could shed light on sickle cell diseases and other disorders where red blood cells are deformed.

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As a result of global warming, the overall area of the Arctic Ocean covered by sea-ice has reduced rapidly. (Dirk Notz)
Climate Change

Arctic to Be Ice-Free During Summers

Summer Arctic sea-ice is predicted to disappear before 2050, resulting in devastating consequences for the Arctic ecosystem. The efficacy of climate-protection measures will determine how often and for how long. These are the results of a new study involving 21 research institutes from around the world, including McGill University.

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Short circuits in lithium metal batteries usually result from the lithium depositing unevenly on the anode during the charging process, forming protruding sharp needles known as dendrites.  (Yen Strandqvist/Chalmers University of Technology)
Sweden: Battery Research

How to Prevent Short Circuits in Lithium Metal Batteries

There are high hopes for the next generation of high energy-density lithium metal batteries, but before they can be used in our vehicles, there are crucial problems to solve. An international research team led by Chalmers University of Technology, Sweden, has now developed concrete guidelines for how the batteries should be charged and operated, maximising efficiency while minimising the risk of short circuits.

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