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Nanotechnology Now - Press Release: Removing the lead hazard from perovskite solar cells


Nanotechnology Now
Home > Press > Removing the lead hazard from perovskite solar cells
A transparent phosphate crystal, which incorporated into solar cells, can instantaneously immobilize the lead in case of failure and block its leaching out from the device.
CREDIT
Endre Horváth (EPFL)
Abstract:
The solar energy-to-electricity conversion of perovskite solar cells is unbelievably high, around 25%, which is now approaching the performance of the best silicon solar cells, says Professor László Forró at EPFL s School of Basic Sciences. But their central element is lead, which is a poison; if the solar panel fails, it can wash out into the soil, get into the food chain, and cause serious diseases. ....

Ecole Polytechnique , Endre Horv , Pavao Andri , Nik Papageorgiou , Jian Shi Research Group , School Of Basic Sciences , Research Awards Scholarships Gifts Contests Honors Records , Wave Inc , Home Press , Nanotechnology Now , நிக் பாபபகஎோற்கிௌ , பள்ளி ஆஃப் அடிப்படை அறிவியல் , ஆராய்ச்சி விருதுகள் உதவித்தொகை பரிசுகள் போட்டிகள் மரியாதை பதிவுகள் , அலை இன்க் , வீடு ப்ரெஸ் , நானோ தொழில்நுட்பம் இப்போது ,

Snap-Freezing Reveals a Truer Structure of Brain Connections


Snap-Freezing Reveals a Truer Structure of Brain Connections
Snap-Freezing Reveals a Truer Structure of Brain Connections
Source: EPFL
Most synaptic connections in the adult brain are situated on dendritic spines; small, micrometer-long, protrusions extending from the neurons’ surface. The spines’ exact size and shape determine how well signals are passed from one neuron to another.
These details become very important when neuroscientists want to model brain circuits or understand how information is transmitted between neurons across the brain’s neuronal circuits. However, their small size and the difficulties in preserving brain tissue in its natural state have always left the question open as to what the true structure of the dendritic spine is. ....

Nik Papageorgiou , Graham Knott , Carl Petersen , School Of Life Sciences , Technology Programme , Young Researchers Exchange Programme , Swiss National Science Foundation , Life Sciences , Japanese Swiss Science , Swiss National Science , Neuroscience Newsletter , நிக் பாபபகஎோற்கிௌ , கிரஹாம் நாட் , கார்ல் பீட்டர்சன் , பள்ளி ஆஃப் வாழ்க்கை அறிவியல் , தொழில்நுட்பம் ப்ரோக்ராம் , இளம் ஆராய்ச்சியாளர்கள் பரிமாற்றம் ப்ரோக்ராம் , சுவிஸ் தேசிய அறிவியல் அடித்தளம் , வாழ்க்கை அறிவியல் , ஜப்பானிய சுவிஸ் அறிவியல் , சுவிஸ் தேசிய அறிவியல் , நரம்பியல் செய்திமடல் ,

Greece: Activists, journalists decry crackdown on protests


Athens, Greece – Concerns have been growing in recent months about the restrictions and bans placed on protests in Greece, as well as the treatment of protesters, journalists, and lawyers at the hands of the police.
In July, as the coronavirus pandemic remained a threat, the Greek parliament passed a bill restricting protests – including outright bans – if they are deemed a threat to public safety.
The new law, which also holds protest organisers legally accountable for damage inflicted by protesters, was condemned by groups such as Amnesty International as well as the Athens bar association and the parliament’s own legislative review committee. ....

Perifereia Ipeirou , Costas Papadakis , Nils Muiznieks , Alexandros Grigoropoulos , Victor Antonopoulos , Nick Papageorgiou , Petros Constantinou , Tony Rigopoulos , Thanasis Kampagiannis , Amnesty International , Athens Bar Association , Amnesty International Regional , Society Foundations , Al Jazeera , Athens Polytechnic , Violence Against , Regional Director , Athens There , Golden Dawn , Open Society Foundations , வெற்றியாளர் அன்டோனோப Ou லோஸ் , நிக் பாபபகஎோற்கிௌ , டோனி ரிகோப Ou லோஸ் , பொது மன்னிப்பு சர்வதேச , ஏதென்ஸ் மதுக்கூடம் சங்கம் , பொது மன்னிப்பு சர்வதேச பிராந்திய ,