Catholic Treatment Ethics and Secular Law: How Can They Cohere?

Central elements of Roman Catholic treatment ethics include: 1) that rejection of treatment with the intent of hastening death (even for a good end) is ethically equivalent to active euthanasia with the same intent; 2) a distinction between morally obligatory “ordinary” treatment and morally optional “extraordinary treatment”; 3) that the quality of the patient’s life is not be a legitimate basis for rejecting treatment; and 4) that extraordinary treatment is not forbidden, but optional, and that it is the patient or the patient’s legal surrogate–not the doctor– who has the right to choose or reject it. Despite these principles, even in a cultural climate fully sympathetic to Catholic treatment ethics, it is appropriate as a legal matter to maintain the doctrine of informed consent under which it is possible for patients or their surrogates to reject life-preserving treatment, including for unethical reasons. It is normally impossible to enforce in practice in the external forum a differentiation between rejection of treatment for ethically acceptable and ethically unacceptable reasons. By contrast, in cases of direct killing, such as assisting suicide, the intent to cause death is unmistakable (as opposed to accepting an increased risk of death as a foreseeable but unintended consequence of pursuing a good end). In a pluralistic society Catholic ethics cannot be legislatively enforced on the ground that they are compelled by Catholic teaching. However, the basic principles of Catholic treatment ethics may be justified based on logic and widely accepted norms of human equality independently of revelation or ecclesiastical authority. Particularly in protecting the right of individuals to choose and obtain life-saving medical treatment regardless of their “quality of life,” and in suicide prevention, secular law can and should be congruent with key aspects of Catholic health care ethics

Experimental study of main rotor tip geometry and tail rotor interactions in hover. Volume 1. Text and figures

A model scale hover test was conducted in the Sikorsky Aircraft Model rotor hover Facility to identify and quantify the impact of the tail rotor on the demonstrated advantages of advanced geometry tip configurations. The test was conducted using the Basic Model Test Rig and two scaled main rotor systems, one representing a 1/5.727 scale UH-60A BLACK HAWK and the others a 1/4.71 scale S-76. Eight alternate rotor tip configurations were tested, 3 on the BLACK HAWK rotor and 6 on the S-76 rotor. Four of these tips were then selected for testing in close proximity to an operating tail rotor (operating in both tractor and pusher modes) to determine if the performance advantages that could be obtained from the use of advanced geometry tips in a main rotor only environment would still exist in the more complex flow field involving a tail rotor. The test showed that overall the tail rotor effects on the advanced tip configurations tested are not substantially different from the effects on conventional tips

Extended-release morphine sulfate in treatment of severe acute and chronic pain

Morphine is the archetypal opioid analgesic. Because it is a short-acting opioid, its use has been limited to the management of acute pain. The development of extended-release formulations have resulted in the increased utilization of morphine in chronic pain conditions. This review documents the history of morphine use in pain treatment, and describes the metabolism, pharmacodynamics, formulations, and efficacy of the currently available extended-release morphine medications

Experimental study of main rotor tip geometry and tail rotor interactions in hover. Volume 2: Run log and tabulated data

A model scale hover test was conducted in the Sikorsky Aircraft Model Rotor hover Facility to identify and quantify the impact of the tail rotor on the demonstrated advantages of advanced geometry tip configurations. The existence of mutual interference between hovering main rotor and a tail rotor was acknowledged in the test. The test was conducted using the Basic Model Test Rig and two scaled main rotor systems, one representing a 1/5.727 scale UH-60A BLACK HAWK and the others a 1/4.71 scale S-76. Eight alternate rotor tip configurations were tested, 3 on the BLACK HAWK rotor and 6 on the S-76 rotor. Four of these tips were then selected for testing in close proximity to an operating tail rotor (operating in both tractor and pusher modes) to determine if the performance advantages that could be obtained from the use of advanced geometry tips in a main rotor only environment would still exist in the more complex flow field involving a tail rotor. This volume contains the test run log and tabulated data

Chalk-Ex—fate of CaCO3 particles in the mixed layer : evolution of patch optical properties

Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 114 (2009): C07020, doi:10.1029/2008JC004902.The fate of particles in the mixed layer is of great relevance to the global carbon cycle as well as to the propagation of light in the sea. We conducted four manipulative field experiments called “Chalk-Ex” in which known quantities of uniform, calcium carbonate particles were injected into the surface mixed layer. Since the production term for these patches was known to high precision, the experimental design allowed us to focus on terms associated with particle loss. The mass of chalk in the patches was evaluated using the well-calibrated light-scattering properties of the chalk plus measurements from a variety of optical measurements and platforms. Patches were surveyed with a temporal resolution of hours over spatial scales of tens of kilometers. Our results demonstrated exponential loss of the chalk particles with time from the patches. There was little evidence for rapid sinking of the chalk. Instead, horizontal eddy diffusion appeared to be the major factor affecting the dispersion of the chalk to concentrations below the limits of detection. There was unequivocal evidence of subduction of the chalk along isopycnals and subsequent formation of thin layers. Shear dispersion is the most likely mechanism to explain these results. Calculations of horizontal eddy diffusivity were consistent with other mixed layer patch experiments. Our results provide insight into the importance of physics in the formation of subsurface particle maxima in the sea, as well as the importance of rapid coccolith production and critical patch size for maintenance of natural coccolithophore blooms in nature.We would like to thank the Office of Naval Research/Optical and Biological Oceanography Program for their support of Chalk-Ex with awards N000140110042 (WMB) and N00014-01-1-0141 (AJP). Additional funding for this work came from ONR (N00014-05-1- 0111) and NASA (NNG04Gl11G, NNX08AC27G, NNG04HZ25C) to W.M.B

Suicide: A Constitutional Right?

Recent advocacy of a right to suicide raises the question of whether statutes which penalize the assistance of suicide and the widespread practice of intervention to stop suicide attempts are unconstitutional. This article considers the claim that the right of privacy or substantive due process encompasses autonomy to do whatever affects no one else, and concludes that the Supreme Court has recognized only those forms of autonomy that it has deemed to be rooted in the traditions and history of our society. After outlining the attitudes toward suicide at various stages in Western Civilization, focusing on Anglo- American history and particularly on the legal tradition, the authors conclude that the predominant approach has been to discourage suicide and to penalize its assistance, while, at least in American history, to treat rather than condemn the suicide attempter. In their view, suicide has not historically been treated as a fundamental right. The article then relates psychological and sociological evidence that those who attempt suicide are normally ambivalent, usually do so for reasons other than a settled desire to die, and are predominantly the victims of mental disorder. Finally, the authors argue that societal sanctions for suicide would lead to manipulation by others and social pressure that would induce many unstable individuals, who would otherwise be helped, to commit suicide. For these reasons, the authors regard recognition of a right to suicide as unjustified and undesirable

Helicopter tail rotor thrust and main rotor wake coupling in crosswind flight

The tail rotor of a helicopter with a single main rotor configuration can experience a significant reduction in thrust when the aircraft operates in crosswind flight. Brown’s vorticity transport model has been used to simulate a main rotor and tail rotor system translating at a sideslip angle that causes the tail rotor to interact with the main rotor tip vortices as they propagate downstream at the lateral extremities of the wake. The tail rotor is shown to exhibit a distinct directionally dependent mode during which tail rotors that are configured so that the blades travel forward at the top of the disk develop less thrust than tail rotors with the reverse sense of rotation. The range of flight speeds over which this mode exists is shown to vary considerably with the vertical location of the tail rotor. At low flight speeds, the directionally dependent mode occurs because the tail rotor is immersed within not only the downwash from the main rotor but also the rotational flow associated with clusters of largely disorganized vorticity within the main rotor wake. At higher flight speeds, however, the tail rotor is immersed within a coherent supervortex that strongly influences the velocity field surrounding the tail rotor