Two studies to be published tomorrow (Thursday 27 January) in Europe’s leading reproductive medicine journal, Human Reproduction, provide a generally optimistic picture about attitudes towards the increasing trend in society to be more open about the use of sperm donors. However, they indicate that not all parents are comfortable with the new openness, there are still many unknowns about attitudes and further research and public education will be needed.
It became compulsory last June in the Netherlands for all sperm donors to be identified. The Fertility Center at Leiden University Hospital has run a double-track system since 1994 allowing couples to choose either an anonymous or an identifiable donor whose details would be available to children when they are 16. This has enabled researchers led by Dr Anne Brewaeys of the university’s medical center to compare the reasons for the different choices and provide some insight into the potential impact of the new legislation.
In the UK from April this year all children conceived via donors will be entitled to have identifying information when they are 18. In a study led by Dr Emma Lycett of the Family and Child Psychology Research Centre of London’s City University, researchers compared the emotions and experiences of parents who favoured openness with their children with those who were not keen on disclosure.
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In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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