2-Amino-6-(naphthalen-1-yl)-4-phenyl­pyridine-3-carbonitrile

In the title compound, C22H15N3, the naphthyl ring system makes dihedral angles of 67.40 (2) and 59.80 (3)° with the pyridyl and phenyl rings, respectively. In the crystal, the mol­ecules are connected via inter­molecular N—H⋯N hydrogen bonds, forming a three-dimensional network

Poly[di-μ2-chlorido-μ2-(1,4-dioxane-κ2 O:O′)-cadmium(II)]

In the title complex, [CdCl2(C4H8O2)]n, two different CdII ions are present, one in a general position and one with site symmetry 2. The CdII ions are coordinated by two O atoms from two 1,4-dioxane ligands and four chloride anions in a slightly distorted octa­hedral geometry and is connected to neighboring CdII ions by two bridging chloride anions, generating infinite linear chains along the a axis. These chains are further inter­connected by bridging 1,4-dioxane ligands, affording a three-dimensional network

5-(4-Methyl­piperazin-1-yl)-2-nitro­aniline

In the title compound, C11H16N4O2, the dihedral angle between the benzene ring and the plane of the four carbon atoms in the piperazine ring is 12.17 (3)°; the latter ring adopts a chair conformation. An intramolecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, the molecules are linked by N—H⋯N hydrogen bonds, forming chains

2-Methyl­sulfanyl-4-(3-pyrid­yl)pyrimidine

In the title compound, C10H9N3S, the dihedral angle between the aromatic rings is 8.09 (14)°. In the crystal, a C—H⋯N interaction links the molecules, forming chains

Experimental Test of Tracking the King Problem

In quantum theory, the retrodiction problem is not as clear as its classical counterpart because of the uncertainty principle of quantum mechanics. In classical physics, the measurement outcomes of the present state can be used directly for predicting the future events and inferring the past events which is known as retrodiction. However, as a probabilistic theory, quantum-mechanical retrodiction is a nontrivial problem that has been investigated for a long time, of which the Mean King Problem is one of the most extensively studied issues. Here, we present the first experimental test of a variant of the Mean King Problem, which has a more stringent regulation and is termed "Tracking the King". We demonstrate that Alice, by harnessing the shared entanglement and controlled-not gate, can successfully retrodict the choice of King's measurement without knowing any measurement outcome. Our results also provide a counterintuitive quantum communication to deliver information hidden in the choice of measurement.Comment: 16 pages, 5 figures, 2 table

The Photometric System of Tsinghua-NAOC 80-cm Telescope at NAOC Xinglong Observatory

Tsinghua-NAOC (National Astronomical Observatories of China) Telescope (hereafter, TNT) is an 80-cm Cassegrain reflecting telescope located at Xinglong bservatory of NAOC, with main scientific goals of monitoring various transients in the universe such as supernovae, gamma-ray bursts, novae, variable stars, and active galactic nuclei. We present in this paper a systematic test and analysis of the photometric performance of this telescope. Based on the calibration observations on twelve photometric nights, spanning the period from year 2004 to year 2012, we derived an accurate transformation relationship between the instrumental $ubvri$ magnitudes and standard Johnson $UBV$ and Cousins $RI$ magnitudes. In particular, the color terms and the extinction coefficients of different passbands are well determined. With these data, we also obtained the limiting magnitudes and the photometric precision of TNT. It is worthwhile to point out that the sky background at Xinglong Observatory may become gradually worse over the period from year 2005 to year 2012 (e.g., $\sim$21.4 mag vs. $\sim$20.1 mag in the V band).Comment: 12 pages,9 figures, accepted by RA

First report on the occurrence of Rickettsia slovaca and Rickettsia raoultii in Dermacentor silvarum in China

10.1186/1756-3305-5-19Parasites and Vectors511

Antioxidant phenolics from Broussonetia papyrifera fruits

Fractionation of the EtOH extract from the fruits of Broussonetia papyrifera led to the isolation of 15 phenolic compounds (1–15). Their structures were identified using spectroscopic methods. Among these compounds, 1 and 2 are new and 3–15 were isolated from this plant for the first time. Antioxidant activities of compounds 2–15 against H2O2-induced injury in SY5Y cells and 1,1-diphenyl-2-picrylhydrazyl radical scavenging activities were evaluated