133 research outputs found
The European Approach to Privacy
This paper critically assesses the character of European (Union’s) privacy law and policy in the field of online media and electronic communications. Contrary to current understanding, this field of law is more fragmented and ill-developed than is often assumed, in particular by those discussing privacy law and policy in an international and transatlantic context. In fact, some of the most challenging regulatory issues in the field of online media and electronic communications still lack a well-developed common European approach and remain the subject of regulation at the level of the different member states of the European Union. Drawing on historic insights, the paper shows how EU policy making in the field of privacy and data protection is and remains strongly influenced by the EU institutional setting. In particular, the paper shows that the specific substantive outcome of European privacy law and policy is strongly influenced by and can only be understood properly through the lens of the ongoing project of European integration more generally. The paper will develop its main thesis by focusing on three important and current privacy issues and their treatment by EU lawmakers and the EU legal system. These are: (I.) the question of retention of communications meta-data (e.g. traffic and location data) in the field of electronic communications; (II.) the legal framework for liability of search engines for privacy and reputational harms in the online environment, including a 'right to be forgotten', and (III.) the question of the security of and the potential lawful access by foreign governments to data in the cloud. After discussing these substantive privacy policy issues and the legal frameworks that have developed (and are developing) to address them at the EU level, the paper will analyze these frameworks in view of the apparent interplay of the substance of privacy law and policy at the EU level on the one hand and the broader constitutional and institutional dynamics related to EU competency and integration. The paper starts with a discussion of the basic underlying motivations, rationales and competences for addressing privacy issues at the European level, which until recently were predominantly economic in nature. The implication of this is that some of the most pressing data privacy issues which are primarily non-economic in character, have been addressed at the fringes of what could be called the European approach to data privacy, in which the establishment of a functioning European internal market and the free flow of personal data under sufficient safeguards relating to data privacy are the dominant concerns. More recently, the adoption of the Lisbon treaty, the establishment of a binding right to data protection and privacy in the EU Charter and a new legal basis for the establishment of data protection rules at the EU level, EU privacy law and policy has become increasingly connected to the furtherance of the protection of privacy and data protection as fundamental rights more generally. Through the case studies in the paper, this dynamic of how policy rationales end up playing out at the EU level and inform the substance of privacy policies adopted, is illustrated in detail. In particular, the analysis shows how EU policy making tends to strive towards a common and comprehensive European approach, but typically fails to take account of some of the leading concerns, and is often simply not equipped or even allowed to include them in the process. For instance, there is significant disagreement about the weight that should be attributed to freedom of expression concerns in the online environment and the role of the EU with respect to media and the proper balancing of freedom and privacy in the media remains limited. With respect to national security concerns there are no European harmonization of national approaches at all. The result is that important policy concerns from the perspective of privacy in electronic communications end up being addressed indirectly, inefficiently and incompletely, through the European data privacy frameworks that may aspire to be comprehensive but would need significant reforms to achieve this aim. The article will discuss possible reforms but will warn against aspirations of further harmonization and unification of European Privacy Law. In the absence of fundamental institutional reform of the EU, further harmonization could end up being detrimental to other important policy goals currently addressed largely outside of the EU legal framework, including the issues of media freedom, criminal procedural justice and the protection of privacy and information security in relation to foreign intelligence agencies specifically discussed in this paper
Polymer nanofilms with enhanced microporosity by interfacial polymerization
Highly permeable and selective membranes are desirable for energy-efficient gas and liquid separations. Microporous organic polymers have attracted significant attention in this respect owing to their high porosity, permeability, and molecular selectivity. However, it remains challenging to fabricate selective polymer membranes with controlled microporosity which are stable in solvents. Here we report a new approach to designing crosslinked, rigid polymer nanofilms with enhanced microporosity by manipulating the molecular structure. Ultra-thin polyarylate nanofilms with thickness down to 20 nm were formed in-situ by interfacial polymerisation. Enhanced microporosity and higher interconnectivity of intermolecular network voids, as rationalised by molecular simulations, are achieved by utilising contorted monomers for the interfacial polymerisation. Composite membranes comprising polyarylate nanofilms with enhanced microporosity fabricated in-situ on crosslinked polyimide ultrafiltration membranes show outstanding separation performance in organic solvents, with up to two orders of magnitude higher solvent permeance than membranes fabricated with nanofilms made from noncontorted planar monomers
Losartan Decreases p42/44 MAPK Signaling and Preserves LZ+ MYPT1 Expression
Heart failure is associated with impairment in nitric oxide (NO) mediated vasodilatation, which has been demonstrated to result from a reduction in the relative expression of the leucine zipper positive (LZ+) isoform of the myosin targeting subunit (MYPT1) of myosin light chain phosphatase. Further, captopril preserves normal LZ+ MYPT1 expression, the sensitivity to cGMP-mediated vasodilatation and modulates the expression of genes in the p42/44 MAPK and p38 MAPK signaling cascades. This study tests whether angiotensin receptor blockade (ARB) with losartan decreases p42/44 MAPK or p38 MAPK signaling and preserves LZ+ MYPT1 expression in a rat infarct model of heart failure. In aortic smooth muscle, p42/44 MAPK activation increases and LZ+ MYPT1 expression falls after LAD ligation. Losartan treatment decreases the activation of p42/44 MAPK to the uninfarcted control level and preserves normal LZ+ MYPT1 expression. The expression and activation of p38 MAPK, however, is low and does not change following LAD ligation or with losartan therapy. These data suggest that either reducing or blocking the effects of circulating angiotensin II, both decreases the activation of the p42/44 MAPK signaling cascade and preserves LZ+ MYPT1 expression. Thus, the ability of ACE-inhibitors and ARBs to modulate the vascular phenotype, to preserve normal flow mediated vasodilatation may explain the beneficial effects of these drugs compared to other forms of afterload reduction in the treatment of heart failure
Effect of methylene blue on the genomic response to reperfusion injury induced by cardiac arrest and cardiopulmonary resuscitation in porcine brain
<p>Abstract</p> <p>Background</p> <p>Cerebral ischemia/reperfusion injury is a common secondary effect of cardiac arrest which is largely responsible for postresuscitative mortality. Therefore development of therapies which restore and protect the brain function after cardiac arrest is essential. Methylene blue (MB) has been experimentally proven neuroprotective in a porcine model of global ischemia-reperfusion in experimental cardiac arrest. However, no comprehensive analyses have been conducted at gene expression level.</p> <p>Methods</p> <p>Pigs underwent either untreated cardiac arrest (CA) or CA with subsequent cardiopulmonary resuscitation (CPR) accompanied with an infusion of saline or an infusion of saline with MB. Genome-wide transcriptional profiling using the Affymetrix porcine microarray was performed to 1) gain understanding of delayed neuronal death initiation in porcine brain during ischemia and after 30, 60 and 180 min following reperfusion, and 2) identify the mechanisms behind the neuroprotective effect of MB after ischemic injury (at 30, 60 and 180 min).</p> <p>Results</p> <p>Our results show that restoration of spontaneous circulation (ROSC) induces major transcriptional changes related to stress response, inflammation, apoptosis and even cytoprotection. In contrast, the untreated ischemic and anoxic insult affected only few genes mainly involved in intra-/extracellular ionic balance. Furthermore, our data show that the neuroprotective role of MB is diverse and fulfilled by regulation of the expression of soluble guanylate cyclase and biological processes accountable for inhibition of apoptosis, modulation of stress response, neurogenesis and neuroprotection.</p> <p>Conclusions</p> <p>Our results support that MB could be a valuable intervention and should be investigated as a therapeutic agent against neural damage associated with I/R injury induced by cardiac arrest.</p
Development and evaluation of an instrument for the critical appraisal of randomized controlled trials of natural products
<p>Abstract</p> <p>Background</p> <p>The efficacy of natural products (NPs) is being evaluated using randomized controlled trials (RCTs) with increasing frequency, yet a search of the literature did not identify a widely accepted critical appraisal instrument developed specifically for use with NPs. The purpose of this project was to develop and evaluate a critical appraisal instrument that is sufficiently rigorous to be used in evaluating RCTs of conventional medicines, and also has a section specific for use with single entity NPs, including herbs and natural sourced chemicals.</p> <p>Methods</p> <p>Three phases of the project included: 1) using experts and a Delphi process to reach consensus on a list of items essential in describing the identity of an NP; 2) compiling a list of non-NP items important for evaluating the quality of an RCT using systematic review methodology to identify published instruments and then compiling item categories that were part of a validated instrument and/or had empirical evidence to support their inclusion and 3) conducting a field test to compare the new instrument to a published instrument for usefulness in evaluating the quality of 3 RCTs of a NP and in applying results to practice.</p> <p>Results</p> <p>Two Delphi rounds resulted in a list of 15 items essential in describing NPs. Seventeen item categories fitting inclusion criteria were identified from published instruments for conventional medicines. The new assessment instrument was assembled based on content of the two lists and the addition of a Reviewer's Conclusion section. The field test of the new instrument showed good criterion validity. Participants found it useful in translating evidence from RCTs to practice.</p> <p>Conclusion</p> <p>A new instrument for the critical appraisal of RCTs of NPs was developed and tested. The instrument is distinct from other available assessment instruments for RCTs of NPs in its systematic development and validation. The instrument is ready to be used by pharmacy students, health care practitioners and academics and will continue to be refined as required.</p
Atmospheric electrification in dusty, reactive gases in the solar system and beyond
Detailed observations of the solar system planets reveal a wide variety of local atmospheric conditions. Astronomical observations have revealed a variety of extrasolar planets none of which resembles any of the solar system planets in full. Instead, the most massive amongst the extrasolar planets, the gas giants, appear very similar to the class of (young) Brown Dwarfs which are amongst the oldest objects in the universe. Despite of this diversity, solar system planets, extrasolar planets and Brown Dwarfs have broadly similar global temperatures between 300K and 2500K. In consequence, clouds of different chemical species form in their atmospheres. While the details of these clouds differ, the fundamental physical processes are the same. Further to this, all these objects were observed to produce radio and X-ray emission. While both kinds of radiation are well studied on Earth and to a lesser extent on the solar system planets, the occurrence of emission that potentially originate from accelerated electrons on Brown Dwarfs, extrasolar planets and protoplanetary disks is not well understood yet. This paper offers an interdisciplinary view on electrification processes and their feedback on their hosting environment in meteorology, volcanology, planetology and research on extrasolar planets and planet formation
An algorithm for chemotherapy treatment of recurrent glioma patients after temozolomide failure in the general oncology setting
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