3,698 research outputs found
New Left Organizers and the Poor
The decade of the sixties witnessed a resurgence of radical or leftist movements in the United States as manifested in the political activism of college students, civil rights organizations, community groups and others. Today, in the post-Vietnam era of the seventies, the fires of the New Left appear to have been dampened. But even though these groups may be less visible and vocal today, it would be a mistake to think that their ideas are no longer of interest to certain segments of our society. Some contemporary New Left groups, while outwardly rejecting dramatic Marxist revolutionary tactics have instead engaged in grass-roots organizing efforts at the community level.
What follows is an analysis of one such New Left organization, Western Massachusetts Labor Action (WMLA), an affiliate of the National Labor Federation (NATLFED). Prior literature regarding NATLFED and its branch associations ( entities ) has been descriptive of the organization, but heavily propagandistic (National Labor Federation, 1976; Leggett and Mouldner, 1976). Here, we attempt a critical examination of WMLA both as a representative entity of NATLFED and as an example of an independent effort to organize the poor. The essential question addressed is the manner in which grass-roots, community-based groups can best organize the poor to improve their living conditions in American society
Direct measurement of the 14N(p,g)15O S-factor
We have measured the 14N(p,g)15O excitation function for energies in the
range E_p = 155--524 keV. Fits of these data using R-matrix theory yield a
value for the S-factor at zero energy of 1.64(17) keV b, which is significantly
smaller than the result of a previous direct measurement. The corresponding
reduction in the stellar reaction rate for 14N(p,g)15O has a number of
interesting consequences, including an impact on estimates for the age of the
Galaxy derived from globular clusters.Comment: 5 pages, 3 figures, submitted to Phys. Rev. Let
Tuning the Kondo effect with a mechanically controllable break junction
We study electron transport through C60 molecules in the Kondo regime using a
mechanically controllable break junction. By varying the electrode spacing, we
are able to change both the width and height of the Kondo resonance, indicating
modification of the Kondo temperature and the relative strength of coupling to
the two electrodes. The linear conductance as a function of T/T_K agrees with
the scaling function expected for the spin-1/2 Kondo problem. We are also able
to tune finite-bias Kondo features which appear at the energy of the first C60
intracage vibrational mode.Comment: 4 pages with 4 figure
Low Catalyst Loadings in Olefin Metathesis: Synthesis of Nitrogen Heterocycles by Ring-Closing Metathesis
A series of ruthenium catalysts have been screened under ring-closing metathesis (RCM) conditions to produce five-, six-, and seven-membered carbamate-protected cyclic amines. Many of these catalysts demonstrated excellent RCM activity and yields with as low as 500 ppm catalyst loadings. RCM of the five-membered carbamate series could be run neat, the six-membered carbamate series could be run at 1.0 M, and the seven-membered carbamate series worked best at 0.2â0.05 M
Constraining ^(26)Al+p resonances using ^(26)Al(^3He,d)^(27)Si
The ^(26)Al(^3He,d)^(27)Si reaction was measured from 0°â€Îž_(c.m.)â€35° at E(^3He)=20 MeV using a quadrupole-dipole-dipole-dipole magnetic spectrometer. States in ^(27)Si were observed above the background at 7652 and 7741 keV and upper limits were set for the state at 7592 keV. Implications for the ^(26)Al(p,Îł)^(27)Si stellar reaction rate are discussed
Access to Care and Cardiovascular Disease Prevention: A Cross-Sectional Study in 2 Latino Communities.
Cardiovascular disease (CVD) is the leading killer of Americans. CVD is understudied among Latinos, who have high levels of CVD risk factors. This study aimed to determine whether access to health care (ie, insurance status and having a usual source of care) is associated with 4 CVD prevention factors (ie, health care utilization, CVD screening, information received from health care providers, and lifestyle factors) among Latino adults and to evaluate whether the associations depended on CVD clinical risk/disease.Data were collected as part of a community-engaged food environment intervention study in East Los Angeles and Boyle Heights, CA. Logistic regressions were fitted with insurance status and usual source of care as predictors of the 4 CVD prevention factors while controlling for demographics. Analyses were repeated with interactions between self-reported CVD clinical risk/disease and access to care measures.Access to health care significantly increased the odds of CVD prevention. Having a usual source of care was associated with all factors of prevention, whereas being insured was only associated with some factors of prevention. CVD clinical risk/disease did not moderate any associations.Although efforts to reduce CVD risk among Latinos through the Affordable Care Act could be impactful, they might have limited impact in curbing CVD among Latinos, via the law's expansion of insurance coverage. CVD prevention efforts must expand beyond the provision of insurance to effectively lower CVD rates
Development and Characterisation of a Gas System and its Associated Slow-Control System for an ATLAS Small-Strip Thin Gap Chamber Testing Facility
A quality assurance and performance qualification laboratory was built at
McGill University for the Canadian-made small-strip Thin Gap Chamber (sTGC)
muon detectors produced for the 2019-2020 ATLAS experiment muon spectrometer
upgrade. The facility uses cosmic rays as a muon source to ionise the quenching
gas mixture of pentane and carbon dioxide flowing through the sTGC detector. A
gas system was developed and characterised for this purpose, with a simple and
efficient gas condenser design utilizing a Peltier thermoelectric cooler (TEC).
The gas system was tested to provide the desired 45 vol% pentane concentration.
For continuous operations, a state-machine system was implemented with alerting
and remote monitoring features to run all cosmic-ray data-acquisition
associated slow-control systems, such as high/low voltage, gas system and
environmental monitoring, in a safe and continuous mode, even in the absence of
an operator.Comment: 23 pages, LaTeX, 14 figures, 4 tables, proof corrections for Journal
of Instrumentation (JINST), including corrected Fig. 8b
Mechanical properties of nanotubes of polyelectrolyte multilayers
The elastic properties of nanotubes fabricated by layer-by-layer (LbL)
assembly of polyelectrolytes in the nanopores of polycarbonate track-etched
membranes have been investigated by resonant contact Atomic Force Microscopy
(AFM), for nanotube diameters in the range of 100 to 200 nm. The elastic
modulus of the nanotubes was computed from the resonance frequencies of a
cantilever resting on freely suspended LbL nanotubes. An average value of
115MPa was found in air for Young's modulus of these nanostructures, well below
the values reported for dry, flat multilayers, but in the range of values
reported for water-swollen flat multilayers. These low values are most probably
due to the lower degree of ionic cross-linking of LbL nanotubes and their
consequently higher water content in air, resulting from the peculiar mode of
growth of nanoconfined polyelectrolyte multilayers
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