Pair Production of Scalar Dyons in Kerr-Newman Black Holes

We study the spontaneous pair production of scalar dyons in the near extremal dyonic Kerr-Newman (KN) black hole, which contains a warped AdS$_3$ structure in the near horizon region. The leading term contribution of the pair production rate and the absorption cross section ratio are also calculated using the Hamilton-Jacobi approach and the thermal interpretation is given. In addition, the holographic dual conformal field theories (CFTs) descriptions of the pair production rate and absorption cross section ratios are analyzed both in the $J$-, $Q$- and $P$-pictures respectively based on the threefold dyonic KN/CFTs dualities.Comment: 12 pages, 3 figures, revtex4. arXiv admin note: text overlap with arXiv:1607.0261

1-(2-Bromo­ethyl)-1,4-diazo­niabicyclo­[2.2.2]octane bromide tetra­fluoro­borate

In the crystal of the title compound, C8H17BrN2 2+·Br−·BF4 −, a weak inter­molecular N—H⋯Br hydrogen bond is observed between the cation and the bromide anion. A two-part disorder model was applied to the BF4 − anion with a refined major–minor occupancy ratio of 0.837 (14):0.163 (14)

1-(2-Bromo­ethyl)-1,4-diazo­niabicyclo­[2.2.2]octane bromide dihydrogen phosphate–phospho­ric acid (1/1)

In the crystal structure of the title compound, C8H17BrN2 2+·Br−·H2PO4 −·H3PO4, the cations, anions and phospho­ric acid mol­ecules are linked by O—H⋯O, N—H⋯O and O—H⋯Br hydrogen bonds into layers parallel to (101)

Measurement-device-independent QKD with Modified Coherent State

The measurement-device-independent quantum key distribution (MDI-QKD) protocol has been proposed for the purpose of removing the detector side channel attacks. Due to the multi-photon events of coherent states sources, real-life implementations of MDI-QKD protocol must employ decoy states to beat the photon-number-splitting attack. Decoy states for MDI-QKD based on the weak coherent states have been studied recently. In this paper, we propose to perform MDI-QKD protocol with modified coherent states (MCS) sources. We simulate the performance of MDI-QKD with the decoy states based on MCS sources. And our simulation indicates that both the secure-key rate and transmission distance can be improved evidently with MCS sources.The physics behind this improvement is that the probability of multi-photon events of the MCS is lower than that of weak coherent states while at the same time the probability of single-photon is higher

The resting sites and blood-meal sources of Anopheles minimus in Taiwan

<p>Abstract</p> <p>Background</p> <p>The WHO declared Taiwan free from malaria in 1965, but in 2003 the reporting of two introduced cases in a rural area suggested a possible local transmission of this disease. Therefore, understanding the resting sites and the blood sources of <it>Anopheles minimus </it>is crucial in order to provide information for implementing vector control strategies.</p> <p>Methods</p> <p>During a two-year survey, mosquitoes were collected in houses and their surrounding areas and at the bank of larval habitats by backpack aspirators in 17 villages in rural areas of southern and eastern Taiwan for 1 hr. On the same day, blacklight traps were hung downward overnight. Blood-fed mosquito samples were analysed by PCR.</p> <p>Results</p> <p>Of the 195 total households surveyed by backpack aspirators, no <it>Anopheles </it>adults were collected inside the houses, while a single <it>Anopheles minimus </it>and a single <it>Anopheles maculatus </it>were collected outside of the houses. On the same day, 23 <it>An. minimus</it>, two <it>An. maculatus</it>, two <it>Anopheles ludlowae</it>, two <it>Anopheles sinensis</it>, and one <it>Anopheles tessellatus </it>were collected along the bank of larval habitats. In blacklight traps hung outside of the houses in the villages, 69 <it>An. minimus</it>, 62 <it>An. ludlowae</it>, 31 <it>An. sinensis</it>, and 19 <it>An. maculatus </it>were collected. In larval habitats, 98 <it>An. ludlowae</it>, 64 <it>An. minimus</it>, 49 <it>An. sinensis</it>, and 14 <it>An. maculatus </it>were collected. Of a total of 10 blood-fed samples, <it>An. minimus </it>fed on four animals including bovine (60%), dogs (20%), pig (10%), and non-chicken avian (10%).</p> <p>Conclusion</p> <p><it>Anopheles minimus</it>, an opportunist feeder in Taiwan, was not collected inside the houses, but was found outside of the houses in villages and surrounding larval habitats. Therefore, an outdoor transmission of malaria is likely to occur and, thus, the bed nets, which are favoured for controlling the late biting of <it>An. minimus</it>, should be a very efficient and effective method for those local residents who sleep outdoors. Additionally, space spray of insecticides for <it>Anopheles </it>at night, as well as residual spray inside animal huts and selective larval habitats, are also helpful to control female adults.</p