1,853 research outputs found
PRIMARY HEALTH CARE FOR ETHNIC MINORITIES AT THE MEDICAL STATION OF DONG QUAN COMMUNE, LOC BINH DISTRICT, LANG SON PROVINCE
Primary health care is a very important part of the country's socio-economic development strategy, a fundamental factor to improve the quality of life of individuals, families and social festivals. In periods, commune, ward and township health stations (hereinafter collectively referred to as health stations) have always been identified as the foundation for performing primary health care for the people. The frontline is close to the people, bringing many benefits in terms of health management, disease prevention, early diagnosis of health problems, primary health care and appropriate referral for people when sick [1]. However, the reality shows that primary health care for ethnic minorities in mountainous areas still faces many difficulties and limitations. This article is the result of the author's research on the status of primary health care for ethnic minorities at the health station of Dong Quan commune, Loc Binh district, Lang Son province. The study was conducted to describe the current situation of primary health care for ethnic minorities in the health station and offer some solutions from the perspective of the social work sector. The data in this article are collected from primary and secondary sources
Experimental determination of the 6s^2 ^1S_0 -> 5d6s ^3 D_1 magnetic-dipole transition amplitude in atomic ytterbium
We report on a measurement of the highly forbidden 6s^2 ^1S_0 \to 5d6s ^3
D_1 magnetic-dipole transition in atomic ytterbium using the
Stark-interference technique. This amplitude is important in interpreting a
future parity nonconservation experiment that exploits the same transition. We
find , where the larger uncertainty comes from the previously
measured vector transition polarizability . The amplitude is small
and should not limit the precision of the parity nonconservation experiment.Comment: 4 pages, 5 figures Paper resubmitted with minor corrections and
additions based on comments from referee
Resolution-dependent quark masses from meson correlators
We explore the impact of a resolution-dependent constituent quark mass, as
recently applied to diffractive meson production, in QCD correlation functions
of several spin-0 and spin-1 meson channels. We compare the resulting
correlators with experimental and lattice data, analyze the virtues and
limitations of the approach, and discuss the channel dependence of the obtained
effective quark masses.Comment: 15 pages, 5 figures, to be published in Phys. Rev. C, reference adde
Metric Properties of the Fuzzy Sphere
The fuzzy sphere, as a quantum metric space, carries a sequence of metrics
which we describe in detail. We show that the Bloch coherent states, with these
spectral distances, form a sequence of metric spaces that converge to the round
sphere in the high-spin limit.Comment: Slightly shortened version, no major changes, two new references,
version to appear on Letters in Mathematical Physic
Direct Instantons in QCD Nucleon Sum Rules
We study the role of direct (i.e. small-scale) instantons in QCD correlation
functions for the nucleon. They generate sizeable, nonperturbative corrections
to the conventional operator product expansion, which improve the quality of
both QCD nucleon sum rules and cure the long-standing stability problem, in
particular, of the chirally odd sum-rule.Comment: 10 pages, UMD PP#93-17
Parameter free calculation of hadronic masses from instantons
We propose a non-perturbative calculation scheme which is based on the
semi-classical approximation of QCD and can be used to evaluate quantities of
interest in hadronic physics. As a first application, we evaluate the mass of
the pion and of the nucleon. Such masses are related to a particular
combination of Green functions which, in some limit, is dominated by the
contribution of \emph{very small-sized} instantons. The size distribution of
these pseudo-particles is determined by the 't Hooft tunneling amplitude
formula and therefore our calculation is free from any model parameters. We
prove that instanton forces generate a light pion and a nucleon with realistic
mass (). In connection with sum-rules approaches, we discuss
the overlap of instantons with pion and nucleon resonances
Suppression of inhomogeneous broadening in rf spectroscopy of optically trapped atoms
We present a novel method for reducing the inhomogeneous frequency broadening
in the hyperfine splitting of the ground state of optically trapped atoms. This
reduction is achieved by the addition of a weak light field, spatially
mode-matched with the trapping field and whose frequency is tuned in-between
the two hyperfine levels. We experimentally demonstrate the new scheme with Rb
85 atoms, and report a 50-fold narrowing of the rf spectrum
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