Mangiferin present in Curcuma amada was extracted with the help of microwave assisted extraction (MAE). The extraction solvent used was ethanol, which is eco-friendly and reduced the risk of environmental hazard. The mangiferin content was found to increase until 500 W, but decreased as the microwave power was increased further. A similar threshold was also obtained for microwave irradiation time. Following a mathematical analysis, an optimal mangiferin yield of 41 μg/mL was obtained from an extraction time of 15.32 s for a microwave power of 500 W.

We report on the first measurement of the F_{2} structure function of the neutron from the semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to ≲100  MeV/c and their angles to ≳100° relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F_{2}^{n} data collected cover the nucleon-resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65<Q^{2}<4.52  GeV^{2}, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio F_{2}^{n}/F_{2}^{p} at 0.2≲x≲0.8 with little uncertainty due to nuclear effects.

We report the first measurement of the parity-violating asymmetry A_{PV} in the elastic scattering of polarized electrons from ^{208}Pb. A_{PV} is sensitive to the radius of the neutron distribution (R_{n}). The result A_{PV}=0.656±0.060(stat)±0.014(syst)  ppm corresponds to a difference between the radii of the neutron and proton distributions R_{n}-R_{p}=0.33_{-0.18}^{+0.16}  fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.

A search for a Higgs boson in the four-lepton decay channel H→ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range of 110<m_{H}<600  GeV. The analysis uses data corresponding to an integrated luminosity of 4.7  fb^{-1} recorded by the CMS detector in pp collisions at sqrt[s]=7  TeV from the LHC. Seventy-two events are observed with four-lepton invariant mass m_{4ℓ}>100  GeV (with 13 below 160 GeV), while 67.1±6.0 (9.5±1.3) events are expected from background. The four-lepton mass distribution is consistent with the expectation of standard model background production of ZZ pairs. Upper limits at 95% confidence level exclude the standard model Higgs boson in the ranges of 134-158 GeV, 180-305 GeV, and 340-465 GeV. Small excesses of events are observed around masses of 119, 126, and 320 GeV, making the observed limits weaker than expected in the absence of a signal.