Research published in the recent issue of Ethology has discovered that men are able to potentially use smell as a mechanism to establish when their current or prospective sexual partners are at their most fertile.
Females of a number of primate species display their fertile period by behavioural and/or morphological changes. The prevalent opinion was that there are no noticeable changes in humans across the cycle. Havlícek et al, however, have found that women’s axillary odour is assessed most attractive in the follicular phase i.e. in the time when conception is most likely.
One of the possible mechanisms for assessing menstrual cycle phase is by means of smell. Thus the researchers investigated possible changes in odour across the menstrual cycle in a sample of 12 women with regular menstrual cycle, not using hormonal contraception. To collect their body odour, they wore armpit pads for 24 hours under controlled conditions (food restrictions, no deodorants etc). Body odour was collected repeatedly during the menstrual, follicular and luteal cycle phase. Fresh samples were assessed namely for attractiveness and intensity by 42 men.
Geographers provide new insight into commuter megaregions of the US
01.12.2016 | Dartmouth College
Sustainable Development Goals lead to lower population growth
30.11.2016 | International Institute for Applied Systems Analysis (IIASA)
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,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy