965 research outputs found
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Socio-economic factors & citizensā practices, enabling Positive Energy Districts: round-table discussion on local energy transitions
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Socio-economic factors & citizensā practices, enabling Positive Energy Districts: advisory report on accelerating PED design
In this report, we investigate the issue of silo thinking in the development of Positive Energy Districts (PEDs) as testified by stakeholders and propose recommendations to overcome silo thinking to achieve better collaboration between and within stakeholder groups. Involving all relevant stakeholders is argued to be essential to effectively reach PEDs and to include vulnerable as well as often overlooked groups in the process (Sareen et al., 2022). However, silo thinking can prevent or hinder the collaboration between stakeholder groups and within a stakeholder group. Thus, we identify silo thinking and best practices to overcome them, from stakeholder interviews conducted as part of a separate report (Derkenbaeva et al., 2022). The analysis focuses on three types of silo thinking ā institutional silos, silos of representation, and administrative silos ā and how to overcome them. In addition to the best practices suggested by stakeholders, additional perspectives to overcome silo thinking are proposed by the authors of this report.
In interviews with stakeholders from Amsterdam, the Canary Islands, and Lisbon metropolitan area, the following issues of silo thinking are identified:
āŖ Institutional silos between citizens, who want to consume renewable, affordable, and community-based energy, and large companies, who are concerned with efficiency and profit
āŖ Silo of representation of citizens about the impossibility for businesses to come out of their profit-driven practices
āŖ Silo of representation about citizensā knowledge and willingness to participate in PEDs projects that make citizens feel less empowered to collaborate as an equal partner with the government or large businesses
āŖ Administrative silos that hinder the governmentās financial support of cross sectoral energy transition efforts such as housing retrofit projects
To overcome the identified silos, we recommend:
āŖ Structural change by the national government providing a legal framework and incentives for local government and companies to engage more with citizens and small businesses during the development of PEDs
āŖ The use of intermediary organizations that can facilitate communication and collaboration between government sectors and between stakeholders
āŖ Intergroup communication that allows citizens and small businesses to acquire more information and voice their demands, breaking from misrecognition and exclusion from such discussion as the development of PEDs
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Socioāeconomic factors and citizens' practices, enabling positive energy districts. Challenging 'silo thinking' for promoting PEDs
Executive Summary:
Collaboration between disciplines, sectors, institutions, and communities is essential for the successful planning and implementation of Positive energy districts (PEDs). However, silo thinking, defined in this document as the disregard of other groupsā viewpoints or interests, poses a barrier to effective collaboration. Based on a review of existing literature, multiple factors were identified that could potentially cause silo thinking in the context of PEDs. First, differences in beliefs and ideologies create silos across disciplines, stakeholders, and communities. Divergent goals across sectors hinder collaboration between departments of the government. Misconceptions and prejudice present barriers in communication between citizens and the government. Furthermore, a lack of consideration for local culture and history may prevent collaboration between different cities and obstruct governments from engaging local innovations. Silos between disciplines and sectors are difficult to overcome because the long tradition of these silos means people are inexperienced in coordination across the boundaries of their own discipline or sector, making coordination more costly.
In the planning and implementation of PEDs, systems thinking is a key change in mindset that allows problem solving in the presence of interdependencies between different groups. Systems thinking can be incorporated in education, midāmanagement training, and work culture. Experts, researchers, and higherālevel governance institutions can incorporate this type of holistic thinking to take a nexus approach or multidisciplinary approach in policy framing. As useful as it may be, in practical application, the systems approach can be obstructed by existing boundaries of organisations. Thus, the government also takes a primary role in facilitating coordination of different entities, by devising coordination bodies within the government and channels of communication with the public, as well as encouraging networks among businesses. Finally, citizens and grassroot organisations can be empowered by these government efforts and more actively engage in actions for PEDs
Interactions between Transmembrane Helices within Monomers of the Aquaporin AtPIP2;1 Play a Crucial Role in Tetramer Formation
Aquaporin (AQP) is a water channel protein found in various subcellular membranes of both prokaryotic and eukaryotic cells. The physiological functions of AQPs have been elucidated in many organisms. However, understanding their biogenesis remains elusive, particularly regarding how they assemble into tetramers. Here, we investigated the amino acid residues involved in the tetramer formation of the Arabidopsis plasma membrane AQP AtPIP2; 1 using extensive amino acid substitution mutagenesis. The mutant proteins V41A/E44A, F51A/L52A, F87A/I91A, F92A/I93A, V95A/Y96A, and H216A/L217A, harboring alanine substitutions in the transmembrane (TM) helices of AtPIP2; 1 polymerized into multiple oligomeric complexes with a variable number of subunits greater than four. Moreover, these mutant proteins failed to traffic to the plasma membrane, instead of accumulating in the endoplasmic reticulum(ER). Structure-based modeling revealed that these residues are largely involved in interactions between TM helices within monomers. These results suggest that inter-TM interactions occurring both within and between monomers play crucial roles in tetramer formation in the AtPIP2; 1 complex. Moreover, the assembly of AtPIP2; 1 tetramers is critical for their trafficking from the ER to the plasma membrane, as well as water permeability.1133Ysciescopu
The GSK-3Ī²-FBXL21 Axis Contributes to Circadian TCAP Degradation and Skeletal Muscle Function.
FBXL21 is a clock-controlled E3 ligase modulating circadian periodicity via subcellular-specific CRYPTOCHROME degradation. How FBXL21 regulates tissue-specific circadian physiology and what mechanism operates upstream is poorly understood. Here we report the sarcomere component TCAP as a cytoplasmic substrate of FBXL21. FBXL21 interacts with TCAP in a circadian manner antiphasic to TCAP accumulation in skeletal muscle, and circadian TCAP oscillation is disrupted in Psttm mice with an Fbxl21 hypomorph mutation. GSK-3Ī² phosphorylates FBXL21 and TCAP to activate FBXL21-mediated, phosphodegron-dependent TCAP degradation. GSK-3Ī² inhibition or knockdown diminishes FBXL21-Cul1 complex formation and delays FBXL21-mediated TCAP degradation. Finally, Psttm mice show significant skeletal muscle defects, including impaired fiber size, exercise tolerance, grip strength, and response to glucocorticoid-induced atrophy, in conjunction with cardiac dysfunction. These data highlight a circadian regulatory pathway where a GSK-3Ī²-FBXL21 functional axis controls TCAP degradation via SCF complex formation and regulates skeletal muscle function
Health-related quality of life in patients with a germline BRCA mutation and metastatic pancreatic cancer receiving maintenance olaparib
BACKGROUND: Patients with metastatic pancreatic cancer (mPC) often have a detriment in health-related quality of life (HRQoL). In the randomized, double-blind, Phase III POLO trial progression-free survival was significantly longer with maintenance olaparib, a poly(ADP-ribose) polymerase inhibitor, than placebo in patients with a germline BRCA1 and/or BRCA2 mutation (gBRCAm) and mPC whose disease had not progressed during first-line platinum-based chemotherapy. The prespecified HRQoL evaluation is reported here. PATIENTS AND METHODS: Patients were randomized to receive maintenance olaparib (300āmg bid; tablets) or placebo. HRQoL was assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30-item module at baseline, every 4 weeks until disease progression, at discontinuation, and 30 days after last dose. Scores ranged from 0 to 100; aāā„ā10-point change or difference between arms was considered clinically meaningful. Adjusted mean change from baseline was analysed using a mixed model for repeated measures. Time to sustained clinically meaningful deterioration (TSCMD) was analysed using a log-rank test. RESULTS: Of 154 randomized patients, 89 of 92 olaparib-arm and 58 of 62 placebo-arm patients were included in HRQoL analyses. The adjusted mean change in Global Health Status (GHS) score from baseline was less than 10 points in both arms and there was no significant between-group difference (-2.47; 95% CIā-ā7.27, 2.33; P=0.31). Analysis of physical functioning scores showed a significant between-group difference (-4.45 points; 95% CIā-ā8.75, -0.16; P=0.04). There was no difference in TSCMD for olaparib versus placebo for GHS (P=0.25; HR 0.72; 95% CI 0.41, 1.27) or physical functioning (P=0.32; HR 1.38; 95%CI 0.73, 2.63). CONCLUSIONS: HRQoL was preserved with maintenance olaparib treatment with no clinically meaningful difference compared with placebo. These results support the observed efficacy benefit of maintenance olaparib in patients with a gBRCAm and mPC. CLINCALTRIALS.GOV NUMBER: NCT02184195
ROR activation by Nobiletin enhances antitumor efficacy via suppression of IĪŗB/NF-ĪŗB signaling in triple-negative breast cancer
AbstractTriple-negative breast cancer (TNBC) is a heterogeneous disease characterized by poor response to standard therapies and therefore unfavorable clinical outcomes. Better understanding of TNBC and new therapeutic strategies are urgently needed. ROR nuclear receptors are multifunctional transcription factors with important roles in circadian pathways and other processes including immunity and tumorigenesis. Nobiletin (NOB) is a natural compound known to display anticancer effects, and our previous studies showed that NOB activates RORs to enhance circadian rhythms and promote physiological fitness in mice. Here, we identified several TNBC cell lines being sensitive to NOB, by itself or in combination. Cell and xenograft experiments showed that NOB significantly inhibited TNBC cell proliferation and motility in vitro and in vivo. ROR loss- and gain-of-function studies showed concordant effects of the NOBāROR axis on MDA-MB-231 cell growth. Mechanistically, we found that NOB activates ROR binding to the ROR response elements (RRE) of the IĪŗBĪ± promoter, and NOB strongly inhibited p65 nuclear translocation. Consistent with transcriptomic analysis indicating cancer and NF-ĪŗB signaling as major pathways altered by NOB, p65-inducible expression abolished NOB effects, illustrating a requisite role of NF-ĪŗB suppression mediating the anti-TNBC effect of NOB. Finally, in vivo mouse xenograft studies showed that NOB enhanced the antitumor efficacy in mammary fat pad implanted TNBC, as a single agent or in combination with the chemotherapy agent Docetaxel. Together, our study highlights an anti-TNBC mechanism of ROR-NOB via suppression of NF-ĪŗB signaling, suggesting novel preventive and chemotherapeutic strategies against this devastating disease.</jats:p
Rechargeable-hybrid-seawater fuel cell
A novel energy conversion and storage system using seawater as a cathode is proposed herein. This system is an intermediate between a battery and a fuel cell, and is accordingly referred to as a hybrid fuel cell. The circulating seawater in this opencathode system results in a continuous supply of sodium ions, which gives this system superior cycling stability that allows the application of various alternative anodes to sodium metal by compensating for irreversible charge losses. Indeed, hard carbon and Sn-C nanocomposite electrodes were successfully applied as anode materials in this hybrid-seawater fuel cell, yielding highly stable cycling performance and reversible capacities exceeding 110 mAh g-1 and 300 mAh g-1, respectively. &copy; 2014 Nature Publishing Group All rights reservedclose1
Open-label study comparing the efficacy and tolerability of aripiprazole and haloperidol in the treatment of pediatric tic disorders
Due to its unique pharmacodynamic properties of dopamine partial agonist activity, and its association with few and mild side effects, aripiprazole is a candidate atypical antipsychotic for patients with tic disorders. This open-label study compared the efficacy and tolerability of aripiprazole with haloperidol, a typical antipsychotic widely used to treat patients with tic disorders. Forty-eight children and adolescents with tic disorders were recruited from the outpatient clinic at South Korea and treated with aripiprazole (initial dose, 5.0Ā mg/d; maximum dose 20Ā mg/d) or haloperidol (initial dose, 0.75Ā mg/d; maximum dose, 4.5Ā mg/d) for 8Ā weeks. Treatment efficacy was measured using the yale global tic severity scale (YGTSS), and tolerability was measured using the extrapyramidal symptom rating scale (ESRS) and an adverse effects checklist. Total tic scores as measured by the YGTSS decreased over time in both groups (pĀ <Ā 0.001) without any significant differences between groups. ESRS scores were significantly higher in the haloperidol group during the 4Ā weeks after commencement of medication (pĀ <Ā 0.05). These results indicate that aripiprazole may be a promising drug in the treatment of children and adolescents with tic disorders. Further controlled studies are needed to determine the efficacy and tolerability of aripiprazole in these patients
Three little pieces for computer and relativity
Numerical relativity has made big strides over the last decade. A number of
problems that have plagued the field for years have now been mostly solved.
This progress has transformed numerical relativity into a powerful tool to
explore fundamental problems in physics and astrophysics, and I present here
three representative examples. These "three little pieces" reflect a personal
choice and describe work that I am particularly familiar with. However, many
more examples could be made.Comment: 42 pages, 11 figures. Plenary talk at "Relativity and Gravitation:
100 Years after Einstein in Prague", June 25 - 29, 2012, Prague, Czech
Republic. To appear in the Proceedings (Edition Open Access). Collects
results appeared in journal articles [72,73, 122-124
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