In the first few Myr massive stars dynamically interact, produce runaways and affect initial binary population. Observing interpreting dynamics of young clusters is key to our understanding star formation process predicting outcome stellar evolution. We have studied NGC6611 in Eagle Nebula (M16), a cluster hosting 19 O stars. used Gaia EDR3 data determine membership, age, kinematics including r...

Massive binaries play an important role in fields ranging from gravitational wave astronomy to stellar evolution. We provide several lines of evidence that classical OBe stars the Small Magellanic Cloud (SMC) obtain their rapid rotation mass and angular momentum transfer massive binaries, which predicts subsequent supernovae should often eject into field. find (1) have a higher field frequency ...

Abstract As a coerced labour force living under repressive conditions, contract workers in São Tomé e Príncipe's cocoa plantations belong to wider phenomenon of global plantation experience during the nineteenth and twentieth centuries. Flight appears as an important element that this article is attempt interpret strategies runaways Tomé's turbulent Great Depression years after 1930. The work s...

Lithium-ion secondary batteries are commonly used in electric vehicles, smart phones, personal digital assistants (PDA), notebooks and electric cars. These lithium-ion secondary batteries must charge and discharge rapidly, causing the interior temperature to rise quickly, raising a safety issue. Over-charging results in an unstable voltage and current, causing potential safety problems, such as...

Relationships between sexual abuse and sexual risk, substance use, emotional distress, and conduct problems were examined among 190 runaways. Those who had been abused were significantly more likely than nonabused peers to engage in unprotected sex, have more sexual partners, and use alcohol and drugs, but did not differ in emotional distress. Those abused after age 13 were more often engaged i...

1550-7998=20 The Lorentz-Dirac equation is not an unavoidable consequence of solely linear and angular momenta conservation for a point charge. It also requires an additional assumption concerning the elementary character of the charge. We here use a less restrictive elementarity assumption for a spinless charge and derive a system of conservation equations that are not properly the equation of...