729 research outputs found
Changes in Fishery Resources in Relation to Water Environments in Osaka Bay
March 15, 2015An attempt was made to analyze the relationship between the change in the quantity of fishery resources and the change of phosphorus load deposited into Osaka Bay. The phosphorus load had steadily increased from 1955 to 1975, then decreased slowly towards the 2000s. The major benthic fishery organisms, such as octopus, shrimp and crab, mantis shrimp, tongue-fish and right-eye flounder, were employed to examine the characteristics of change in fishery resources in relation to water environments of Osaka Bay. Excluding shrimp and crab, catch amounts showed a largely equivalent response to phosphorus load in the bay. The results presented here demonstrate that a close relationship exists between phosphorus emissions and benthic fishery resources in Osaka Bay
Deformation of Stress-Tensor Correlators from Random Geometry
We study stress-tensor correlators in the -deformed conformal field
theories in two dimensions. Using the random geometry approach to the
deformation, we develop a geometrical method to compute
stress-tensor correlators. More specifically, we derive the
deformation to the Polyakov-Liouville conformal anomaly action and calculate
three and four-point correlators to the first-order in the
deformation from the deformed Polyakov-Liouville action. The results are
checked against the standard conformal perturbation theory computation and we
further check consistency with the -deformed operator product
expansions of the stress tensor. A salient feature of the -deformed
stress-tensor correlators is a logarithmic correction that is absent in two and
three-point functions but starts appearing in a four-point function.Comment: 38 pages, 2 figure
Magnetic correlations in the S=5/2 quadratic lattice Heisenberg antiferromagnet Mn(HCOO)2・2(ND2)2CO
The magnetic correlations in the quadratic lattice S=5/2 Heisenberg antiferromagnet Mn(HCOO)2⋅2(ND2)2CO (TN=3.77K) have been studied by means of specific heat and neutron-scattering experiments. With a universal temperature scale, the temperature behavior of both the magnetic heat capacity and spin correlations are quantitatively accounted for by the pure quantum self-consistent harmonic approximation by Cuccoli et al. for S=5/2
Disparity in emergency medical services across Japan
By using a prospective, nation-wide, population-based out-of-hospital cardiac arrest (OHCA) database (All-Japan Utstein Registry, January 1, 2005 to December 31, 2012), we examined the disparity in emergency medical services across Japan and found significant disparities among prefectures. By dividing Japan into seven parts, Hasegawa et al. (2013) analysed regional variability in survival outcomes of OHCA and found a two-fold regional difference in neurologically favourable survival after OHCA. However, seven regions are constructed of North, Northeast, East, Central, Midwest, West, South, and Japan has 47 prefectures. Each prefecture grouped in the same region would be different from others in many aspects. To identify regional disparities more in prehospital care and in-hospital post-resuscitation care, we investigated survival outcomes of OHCA in prefecture levels. As the budgets of central and local governments are not unrestrained but restricted all over the world, the findings in the paper would be beneficial to consider optimal level of regional emergency medical services
VLBI Monitoring Observations of Water Masers Around the Semi-Regular Variable Star R Crateris
We monitored water-vapor masers around the semi-regular variable star R
Crateris with the Japanese VLBI Network (J-Net) at the 22 GHz band during four
epochs with intervals of one month. The relative proper motions and
Doppler-velocity drifts of twelve maser features were measured. Most of them
existed for longer than 80 days. The 3-D kinematics of the features indicates a
bipolar expanding flow. The major axis of the asymmetric flow was estimated to
be at P.A. = 136 degrees. The existence of a bipolar outflow suggests that a
Mira variable star had already formed a bipolar outflow. The water masers are
in a region of apparent minimum radii of 1.3 x 10^12 m and maximum radii of 2.6
x 10^12 m, between which the expansion velocity ranges from 4.3 to 7.4 km/s.
These values suggest that the water masers are radially accelerated, but still
gravitationally bound, in the water-maser region. The most positive and
negative velocity-drifting features were found relatively close to the systemic
velocity of the star. We found that the blue-shifted features are apparently
accelerated and the red-shifted apparently decelerated. The acceleration of
only the blue-shifted features seems to be consistent with that of the
expanding flow from the star.Comment: 15 pages, 5 figures, Accepted for publication in PASJ (2001),
preprint can be obtained via WWW on
http://www.nro.nao.ac.jp/library/report/list.htm
Совершенствование управления пассажирскими перевозками на основе оценки их качества с помощью анкетного метода
Материалы XII Междунар. науч.-техн. конф. (науч. чтения, посвящ. П. О. Сухому), Гомель, 22–23 нояб. 2018 г
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