The search for neutrino bursts from core collapse Supernovae at the Baksan Underground Scintillation Telescope

The current status of the experiment on recording neutrino bursts from core collapse stars is presented. The actual observational time T (from June 30, 1980 until December 31, 2009) is 25.58 years. An upper bound of the mean frequency of gravitational collapse in our Galaxy f _col < 0.090 year^?1 at a 90% confidence level. The results of studying single events at the facility in the case of muon inelastic interaction of cosmic rays with the matter of the detector are presented.     

Carpet—2 Search for Gamma Rays above 100 TeV in Coincidence with HAWC and IceCube Alerts

JETP Letters - We report on the search of astrophysical gamma rays with energies in the 100 TeV to several PeV range arriving in directional and temporal coincidence with public alerts from HAWC...     

离子色谱法测定矿物药中可溶性砷（Ⅲ）和砷（Ⅴ）

离子色谱法测定了矿物药雄黄，雌黄在盐酸配制的人工胃液中可溶性砷和砷。对淋洗液的组成及流速进行了选择。以流速为１．０ｍＬ／ｍｉｎ的３．５ｍｍｏｌ／Ｌ Ｎａ２ＣＯ３淋洗液在ＹＳＣ－４Ａ阴离子交换柱上分离，ＹＳ－Ｚ柱抑制，ＨＬＣ－６０１离子色谱仪电导检知器检测。     

EMMA—a new underground cosmic-ray experiment

An experiment observing underground muons originating from cosmic-ray air showers is under preparation in the Pyhäsalmi mine, Finland. The aim is to cover an area of about 200–300 m², and the detector setup is capable of measuring the muon multiplicity and their lateral distribution. The detector is placed at a depth of about 85 m (corresponding about 240 m w.e.), which gives a threshold energy of muons of about 45 GeV. The detection of the multimuon events is motivated by partly unknown composition of the primary cosmic rays in the energy region of 10¹⁵–10¹⁶ eV, i.e., the knee region. In addition, by measuring only the higher energy muons of the air shower, the lowest energy muons being filtered out by the rock overburden, the data is sensitive also to the studies of the upper parts of the air shower. The experiment will be constructed mainly using drift chambers used previously in LEP detectors at CERN, but it can also be expanded using plastic scintillator detectors. The prototype detector is expected to be running in the beginning of 2006, and the full-size detector by the end of 2007.