2,073 research outputs found
Checks, Not Balances
Critics of the administrative state who would revive the nondelegation doctrine and embrace the unitary theory of executive power often assume that each branchâs powers are capable of precise definition, functionally distinct from the others, and that the formal boundaries between each branch are sacrosanct. This Article situates these critiques in Founding Era and nineteenth century debates about the structure of the Constitution. In the 1780s, the AntiFederalists objected to the Constitution for failing to enumerate a precise taxonomy of each branchâs powers, for failing to specify that each branchâs powers were exclusive, and for failing to make government officials sufficiently accountable to the voting public. The drafters responded that the Anti-Federalist approach would neither support effective government nor prevent the branches from acting tyrannically. Rather than develop a scheme of discrete and precisely divided powers, as the Anti-Federalists proposed, the drafters preferred precise rules of inter-branch coordination to ensure that no one branch dominates the others. This debate continued throughout the nineteenth and early twentieth centuries, with influential legal minds such as Daniel Webster and Joseph Story rejecting the Anti-Federalist theory of separation of powers.
We call this a theory of separation of powers based on a principle of anti-domination. On this view, the separation of powers is breached only if one branch deprives another of its procedural capacity to check the others. We further argue that this theory (a) provides a plausible account of the Framersâ understanding; (b) has had significant purchase in the development of interbranch relations since the Founding and thus can serve as a kind of rational reconstruction of historical practice; and (c) is consistent with the relevant constitutional text and the overall constitutional structure
Against Political Theory in Constitutional Interpretation
Judges and academics have long relied on the work of a small number of Enlightenment political theoristsâparticularly Locke, Montesquieu, and Blackstoneâto discern meaning from vague and ambiguous constitutional provisions. This Essay cautions that Enlightenment political theory should rarely, if ever, be cited as an authoritative source of constitutional meaning. There are three principal problems with constitutional interpretation based on eighteenth-century political theory. First, Enlightenment thinkers developed distinct and incompatible theories about how to structure a republican form of government. That makes it difficult to decide which among the conflicting theories should possess constitutional significance. Second, the Framers did not write the Constitution in the image of the philosophy of Montesquieu, Locke, or Blackstone. Instead, they developed a new form of government to meet what they perceived to be the needs of a nascent republic. And third, the Constitution itself departs from the dominant strands of Enlightenment political theory in crucial respects. For example, while some Enlightenment theorists advocated for precisely divided federal powers, the Framers favored a system of procedural checks, not formal separation. Thus, while Enlightenment works can be normatively persuasive or act as a guide to historical meaning, they should be treated as presumptively irrelevant in constitutional interpretation. Unless the party who would invoke an Enlightenment political theorist can produce evidence of consensus or common ground about that theory from an episode of American constitutional debate, the theoristâs prescriptions are no more probative than any other work of normative political theory
Against Political Theory in Constitutional Interpretation
Judges and academics have long relied on the work of a small number of Enlightenment political theorists-âparticularly Locke, Montesquieu, and Blackstoneâ-to discern meaning from vague and ambiguous constitutional provisions. This Essay cautions that Enlightenment political theory should rarely, if ever, be cited as an authoritative source of constitutional meaning. There are three principal problems with constitutional interpretation based on eighteenth-century political theory. First, Enlightenment thinkers developed distinct and incompatible theories about how to structure a republican form of government. That makes it difficult to decide which among the conflicting theories should possess constitutional significance. Second, the Framers did not write the Constitution in the image of the philosophy of Montesquieu, Locke, or Blackstone. Instead, they developed a new form of government to meet what they perceived to be the needs of a nascent republic. And third, the Constitution itself departs from the dominant strands of Enlightenment political theory in crucial respects. For example, while some Enlightenment theorists advocated for precisely divided federal powers, the Framers favored a system of procedural checks, not formal separation. Thus, while Enlightenment works can be normatively persuasive or act as a guide to historical meaning, they should be treated as presumptively irrelevant in constitutional interpretation. Unless the party who would invoke an Enlightenment political theorist can produce evidence of consensus or common ground about that theory from an episode of American constitutional debate, the theoristâs prescriptions are no more probative than any other work of normative political theory
Characterization of Shewanella oneidensis MtrC: a cell-surface decaheme cytochrome involved in respiratory electron transport to extracellular electron acceptors
MtrC is a decaheme c-type cytochrome associated with the outer cell membrane of Fe(III)-respiring species of the Shewanella genus. It is proposed to play a role in anaerobic respiration by mediating electron transfer to extracellular mineral oxides that can serve as terminal electron acceptors. The present work presents the first spectropotentiometric and voltammetric characterization of MtrC, using protein purified from Shewanella oneidensis MR-1. Potentiometric titrations, monitored by UVâvis absorption and electron paramagnetic resonance (EPR) spectroscopy, reveal that the hemes within MtrC titrate over a broad potential range spanning between approximately +100 and approximately -500 mV (vs. the standard hydrogen electrode). Across this potential window the UVâvis absorption spectra are characteristic of low-spin c-type hemes and the EPR spectra reveal broad, complex features that suggest the presence of magnetically spin-coupled low-spin c-hemes. Non-catalytic protein film voltammetry of MtrC demonstrates reversible electrochemistry over a potential window similar to that disclosed spectroscopically. The voltammetry also allows definition of kinetic properties of MtrC in direct electron exchange with a solid electrode surface and during reduction of a model Fe(III) substrate. Taken together, the data provide quantitative information on the potential domain in which MtrC can operate
Accretion of Planetary Material onto Host Stars
Accretion of planetary material onto host stars may occur throughout a star's
life. Especially prone to accretion, extrasolar planets in short-period orbits,
while relatively rare, constitute a significant fraction of the known
population, and these planets are subject to dynamical and atmospheric
influences that can drive significant mass loss. Theoretical models frame
expectations regarding the rates and extent of this planetary accretion. For
instance, tidal interactions between planets and stars may drive complete
orbital decay during the main sequence. Many planets that survive their stars'
main sequence lifetime will still be engulfed when the host stars become red
giant stars. There is some observational evidence supporting these predictions,
such as a dearth of close-in planets around fast stellar rotators, which is
consistent with tidal spin-up and planet accretion. There remains no clear
chemical evidence for pollution of the atmospheres of main sequence or red
giant stars by planetary materials, but a wealth of evidence points to active
accretion by white dwarfs. In this article, we review the current understanding
of accretion of planetary material, from the pre- to the post-main sequence and
beyond. The review begins with the astrophysical framework for that process and
then considers accretion during various phases of a host star's life, during
which the details of accretion vary, and the observational evidence for
accretion during these phases.Comment: 18 pages, 5 figures (with some redacted), invited revie
Ballistic protective properties of material representative of English civil war buff-coats and clothing
One type of clothing system used in the English Civil War, more common amongst cavalrymen than infantrymen, was the linen shirt, wool waistcoat and buff-coat. Ballistic testing was conducted to estimate the velocity at which 50% of 12-bore lead spherical projectiles (V50) would be expected to perforate this clothing system when mounted on gelatine (a tissue simulant used in wound ballistic studies). An estimated six-shot V50 for the clothing system was calculated as 102 m/s. The distance at which the projectile would have decelerated from the muzzle of the weapon to this velocity in free flight was triple the recognised effective range of weapons of the era suggesting that the clothing system would provide limited protection for the wearer. The estimated V50 was also compared with recorded bounce-and-roll data; this suggested that the clothing system could provide some protection to the wearer from ricochets. Finally, potential wounding behind the clothing system was investigated; the results compared favourably with seventeenth century medical writings
Improving Integration of Behavioral Health Into Primary Care for Adolescents and Young Adults
Problems related to mood, substance use, anxiety, body image issues, post-traumatic stress, and suicidality are common in adolescence and become even more common in young adulthood. Integrated behavioral health (IBH) in primary care has shown great promise in identifying and treating adolescents and young adults who have these problems. Treatment outcomes in IBH settings outperform those in usual primary care settings where a primary care provider may identify behavioral health problems and refer youth to colocated or outside behavioral health specialists. Despite the success of IBH care systems, limited training opportunities and inadequate financial compensation for these services jeopardize the wide scale expansion and universal adoption of IBH. To optimize patient care, providers from all disciplines in adolescent primary care settings should have dedicated professional training in IBH. This should include incorporating IBH professional competencies into each discipline's formal training program and building interprofessional, multidisciplinary IBH training settings. Likewise, payers should work with primary care systems to create and implement reimbursement models for IBH services. Efforts to expand the footprint of IBH would pay off significantly by building more worldwide BH systems with increased efficacy at identifying and treating adolescents with BH conditions
Low Concentrations of Silver Nanoparticles in Biosolids Cause Adverse Ecosystem Responses under Realistic Field Scenario
A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused on high-concentration exposures in mechanistic lab studies with single strains of model organisms. These results are difficult to extrapolate to ecosystems, where exposures will likely be at low-concentrations and which are inhabited by a diversity of organisms. Here we show adverse responses of plants and microorganisms in a replicated long-term terrestrial mesocosm field experiment following a single low dose of silver nanoparticles (0.14 mg Ag kgâ1 soil) applied via a likely route of exposure, sewage biosolid application. While total aboveground plant biomass did not differ between treatments receiving biosolids, one plant species, Microstegium vimeneum, had 32 % less biomass in the Slurry+AgNP treatment relative to the Slurry only treatment. Microorganisms were also affected by AgNP treatment, which gave a significantly different community composition of bacteria in the Slurry+AgNPs as opposed to the Slurry treatment one day after addition as analyzed by T-RFLP analysis of 16S-rRNA genes. After eight days, N2O flux was 4.5 fold higher in the Slurry+AgNPs treatment than the Slurry treatment. After fifty days, community composition and N2O flux of the Slurry+AgNPs treatment converged with the Slurry. However, the soil microbial extracellular enzymes leucine amino peptidase and phosphatase had 52 and 27% lower activities, respectively, while microbial biomass was 35% lower than the Slurry. We also show that the magnitude of these responses was in all cases as large as or larger than the positive control, AgNO3, added at 4-fold the Ag concentration of the silver nanoparticles
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