1,300 research outputs found
Misappropriation of Shuar Traditional Knowledge (TK) and Trade Secrets: A Case Study on Biopiracy in the Amazon
Where the murkiness of biopiracy as a general matter leaves little room for legal theory to anchor, the relative clarity of specific instances of biopiracy may provide sufficient factual information from which to develop appropriate legal theories. In particular, the way biopiracy has been used to misappropriate the traditional knowledge (TK) of the Shuar Nation of Ecuador suggests that there may be legal theories for which the process of misappropriation may give rise to liability under international law as well as under developments in the domestic laws of the United States and Ecuador. The possible efficacy and legal coherence of any such theory are dependent upon an understanding of the background of the problem of biopiracy, the general and specific methods used by biopirates, and a clarification of the nature of the interests in question as misappropriated property.
Part II of this Article provides an outline of the importance of biodiversity and TK for medical and pharmaceutical interests and develops a generic model of bioprospecting, which has been used as a cover for acts of biopiracy. The model is drawn from general experience as well as the specific facts in our possession. This section then details how the bioprospecting and biopiracy process actually works in practice, including an outline of the operations of biopiracy in the specific case of the Shuar.
Part III raises the proposition-widely accepted as conventional wisdom-that indigenous societies have no legally recognizable concept of property and a fortiori cannot have a notion of TK as a property value. This section then addresses the ensuing question of whether TK has the requisite qualities to be considered protectable property at all, and proposes the central principle that indigenous people indeed have concepts of property well recognized in contemporary analytical jurisprudence. Moreover, this section suggests that these same insights are firmly established in legal anthropology as well as in conventional jurisprudence. Finally, the section deals specifically with TK as property, contained within the secretive Shaman tradition of the Amazon Rain Forest, recognizing that it is because the Shaman TK was held to be a secret in the first place that bioprospecters have used extraordinary means of deception to misappropriate such knowledge.
Part IV explores the concept of TK in the context of the development of such ideas as the “new property,” which includes, in particular, intellectual property, providing an appraisal of the problems of protecting TK against the ideological assumptions and misconceptions of certain aspects of intellectual property law. This Article concludes by proposing that the concept of property under the Inter-American system may well include TK as property for the purpose of protecting such property under the Inter-American Convention
Misappropriation of Shuar Traditional Knowledge (TK) and Trade Secrets: A Case Study on Biopiracy in the Amazon
Strong exciton-photon coupling with colloidal nanoplatelets in an open microcavity
Colloidal semiconductor nanoplatelets exhibit quantum size effects due to
their thickness of only few monolayers, together with strong optical band-edge
transitions facilitated by large lateral extensions. In this article we
demonstrate room temperature strong coupling of the light and heavy hole
exciton transitions of CdSe nanoplatelets with the photonic modes of an open
planar microcavity. Vacuum Rabi splittings of meV and meV
are observed for the heavy and light hole excitons respectively, together with
a polariton-mediated hybridisation of both transitions. By measuring the
concentration of platelets in the film we compute the transition dipole moment
of a nanoplatelet exciton to be D. The large oscillator
strength and fluorescence quantum yield of semiconductor nanoplatelets provide
a perspective towards novel photonic devices, combining polaritonic and
spinoptronic effects.Comment: 9 pages, 4 figure
Types of on-farm demonstrations
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A Mixed-Methods Comparison of Self-Reported and Conversational Trust in Science
The development of science and technology highly relies on public trust in science. However, previous studies have shown that the public trust may vary across different scientific issues. This research explored how the public trust in science varied between a general and context specific environment. A convergent mixed-methods design was conducted. The results indicated participants’ self-reported general trust in in science did not change significantly between two measures. However, in conversation four major themes related to distrust were revealed. Future research is recommended to further explore how trust in science evolves in conversation and among different contexts
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Zebrafish behavioural profiling identifies GABA and serotonin receptor ligands related to sedation and paradoxical excitation.
Anesthetics are generally associated with sedation, but some anesthetics can also increase brain and motor activity-a phenomenon known as paradoxical excitation. Previous studies have identified GABAA receptors as the primary targets of most anesthetic drugs, but how these compounds produce paradoxical excitation is poorly understood. To identify and understand such compounds, we applied a behavior-based drug profiling approach. Here, we show that a subset of central nervous system depressants cause paradoxical excitation in zebrafish. Using this behavior as a readout, we screened thousands of compounds and identified dozens of hits that caused paradoxical excitation. Many hit compounds modulated human GABAA receptors, while others appeared to modulate different neuronal targets, including the human serotonin-6 receptor. Ligands at these receptors generally decreased neuronal activity, but paradoxically increased activity in the caudal hindbrain. Together, these studies identify ligands, targets, and neurons affecting sedation and paradoxical excitation in vivo in zebrafish
The Cambridge Centre for Ageing and Neuroscience (Cam-CAN) data repository : structural and functional MRI, MEG, and cognitive data from a cross-sectional adult lifespan sample
Peer reviewe
The relation of C - reactive protein to chronic kidney disease in African Americans: the Jackson Heart Study
<p>Abstract</p> <p>Background</p> <p>African Americans have an increased incidence and worse prognosis with chronic kidney disease (CKD - estimated glomerular filtration rate [eGFR] <60 ml/min/1.73 m<sup>2</sup>) than their counterparts of European-descent. Inflammation has been related to renal disease in non-Hispanic whites, but there are limited data on the role of inflammation in renal dysfunction in African Americans in the community.</p> <p>Methods</p> <p>We examined the cross-sectional relation of log transformed C-reactive protein (CRP) to renal function (eGFR by Modification of Diet and Renal Disease equation) in African American participants of the community-based Jackson Heart Study's first examination (2000 to 2004). We conducted multivariable linear regression relating CRP to eGFR adjusting for age, sex, body mass index, systolic and diastolic blood pressure, diabetes, total/HDL cholesterol, triglycerides, smoking, antihypertensive therapy, lipid lowering therapy, hormone replacement therapy, and prevalent cardiovascular disease events. In a secondary analysis we assessed the association of CRP with albuminuria (defined as albumin-to-creatinine ratio > 30 mg/g).</p> <p>Results</p> <p>Participants (n = 4320, 63.2% women) had a mean age ± SD of 54.0 ± 12.8 years. The prevalence of CKD was 5.2% (n = 228 cases). In multivariable regression, CRP concentrations were higher in those with CKD compared to those without CKD (mean CRP 3.2 ± 1.1 mg/L vs. 2.4 ± 1.0 mg/L, respectively p < 0.0001). CRP was significantly associated with albuminuria in sex and age adjusted model however not in the multivariable adjusted model (p > 0.05).</p> <p>Conclusion</p> <p>CRP was associated with CKD however not albuminuria in multivariable-adjusted analyses. The study of inflammation in the progression of renal disease in African Americans merits further investigation.</p
"Back-to-Front" Indole Synthesis using Silver(I) Catalysis : Unexpected C-3 Pyrrole Activation Mode Supported by DFT
An efficient silver(I)-catalyzed method is reported for the synthesis of substituted indoles, most notably 5-hydroxy-derivatives, via π-acidic alkyne activation. Most methods for the preparation of indoles involve annulation of a benzene precursor, but the method reported herein is unusual in that pyrrole precursors are used. Density Functional Theory (DFT) studies suggest that these reactions proceed via initial activation of the pyrrole C-3 position before undergoing subsequent rearrangement, contradicting the conventional wisdom that pyrroles are more nucleophilic through C-2
The effect of ageing on fMRI: Correction for the confounding effects of vascular reactivity evaluated by joint fMRI and MEG in 335 adults.
In functional magnetic resonance imaging (fMRI) research one is typically interested in neural activity. However, the blood-oxygenation level-dependent (BOLD) signal is a composite of both neural and vascular activity. As factors such as age or medication may alter vascular function, it is essential to account for changes in neurovascular coupling when investigating neurocognitive functioning with fMRI. The resting-state fluctuation amplitude (RSFA) in the fMRI signal (rsfMRI) has been proposed as an index of vascular reactivity. The RSFA compares favourably with other techniques such as breath-hold and hypercapnia, but the latter are more difficult to perform in some populations, such as older adults. The RSFA is therefore a candidate for use in adjusting for age-related changes in vascular reactivity in fMRI studies. The use of RSFA is predicated on its sensitivity to vascular rather than neural factors; however, the extent to which each of these factors contributes to RSFA remains to be characterized. The present work addressed these issues by comparing RSFA (i.e., rsfMRI variability) to proxy measures of (i) cardiovascular function in terms of heart rate (HR) and heart rate variability (HRV) and (ii) neural activity in terms of resting state magnetoencephalography (rsMEG). We derived summary scores of RSFA, a sensorimotor task BOLD activation, cardiovascular function and rsMEG variability for 335 healthy older adults in the population-based Cambridge Centre for Ageing and Neuroscience cohort (Cam-CAN; www.cam-can.com). Mediation analysis revealed that the effects of ageing on RSFA were significantly mediated by vascular factors, but importantly not by the variability in neuronal activity. Furthermore, the converse effects of ageing on the rsMEG variability were not mediated by vascular factors. We then examined the effect of RSFA scaling of task-based BOLD in the sensorimotor task. The scaling analysis revealed that much of the effects of age on task-based activation studies with fMRI do not survive correction for changes in vascular reactivity, and are likely to have been overestimated in previous fMRI studies of ageing. The results from the mediation analysis demonstrate that RSFA is modulated by measures of vascular function and is not driven solely by changes in the variance of neural activity. Based on these findings we propose that the RSFA scaling method is articularly useful in large scale and longitudinal neuroimaging studies of ageing, or with frail participants, where alternative measures of vascular reactivity are impractical.The Cambridge Centre for Ageing and Neuroscience
(Cam-CAN) research was supported by the Biotechnology
and Biological Sciences Research Council (grant number
BB/H008217/1). We are grateful to the Cam-CAN
respondents and their primary care teams in Cambridge
for their participation in this study. We also thank col-
leagues at the MRC Cognition and Brain Sciences Unit
MEG and MRI facilities for their assistance.This is the final version of the article. It first appeared at http://onlinelibrary.wiley.com/doi/10.1002/hbm.22768/ful
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