63 research outputs found
Chemically assisted ion beam etching of optical microresonators
1-D, 2-D, 3-D microstructures with lateral dimensions at the scale of the wavelength of light can be used to generate high finesse microresonators. These have been fabricated in the AIMS system by combining MBE growth with micro-fabrication. Here we show the applications of anisotropicion beam etching and high resolution lithography in the fabrication of high-finesse micro-resonators and discuss their performance as lowthreshold microlasers, fast optical switches, photonic bandgap mirrors and polarizing
beam-splitters
Safeguarding humanâwildlife cooperation
Humanâwildlife cooperation occurs when humans and free-living wild animals actively coordinate their behavior to achieve a mutually beneficial outcome. These interactions provide important benefits to both the human and wildlife communities involved, have wider impacts on the local ecosystem, and represent a unique intersection of human and animal cultures. The remaining active forms are humanâhoneyguide and humanâdolphin cooperation, but these are at risk of joining several inactive forms (including humanâwolf and humanâorca cooperation). Humanâwildlife cooperation faces a unique set of conservation challenges, as it requires multiple componentsâa motivated human and wildlife partner, a suitable environment, and compatible interspecies knowledgeâwhich face threats from ecological and cultural changes. To safeguard humanâwildlife cooperation, we recommend: (i) establishing ethically sound conservation strategies together with the participating human communities; (ii) conserving opportunities for human and wildlife participation; (iii) protecting suitable environments; (iv) facilitating cultural transmission of traditional knowledge; (v) accessibly archiving Indigenous and scientific knowledge; and (vi) conducting long-term empirical studies to better understand these interactions and identify threats. Tailored safeguarding plans are therefore necessary to protect these diverse and irreplaceable interactions. Broadly, our review highlights that efforts to conserve biological and cultural diversity should carefully consider interactions between human and animal cultures.
Please see AfricanHoneyguides.com/abstract-translations for Kiswahili and Portuguese translations of the abstract
Safeguarding humanâwildlife cooperation
Humanâwildlife cooperation occurs when humans and free-living wild animals actively coordinate their behavior to achieve a mutually beneficial outcome. These interactions provide important benefits to both the human and wildlife communities involved, have wider impacts on the local ecosystem, and represent a unique intersection of human and animal cultures. The remaining active forms are humanâhoneyguide and humanâdolphin cooperation, but these are at risk of joining several inactive forms (including humanâwolf and humanâorca cooperation). Humanâwildlife cooperation faces a unique set of conservation challenges, as it requires multiple componentsâa motivated human and wildlife partner, a suitable environment, and compatible interspecies knowledgeâwhich face threats from ecological and cultural changes. To safeguard humanâwildlife cooperation, we recommend: (i) establishing ethically sound conservation strategies together with the participating human communities; (ii) conserving opportunities for human and wildlife participation; (iii) protecting suitable environments; (iv) facilitating cultural transmission of traditional knowledge; (v) accessibly archiving Indigenous and scientific knowledge; and (vi) conducting long-term empirical studies to better understand these interactions and identify threats. Tailored safeguarding plans are therefore necessary to protect these diverse and irreplaceable interactions. Broadly, our review highlights that efforts to conserve biological and cultural diversity should carefully consider interactions between human and animal cultures
A core outcome set for preâeclampsia research: an international consensus development study
Objective
To develop a core outcome set for preâeclampsia.
Design
Consensus development study.
Setting
International.
Population
Two hundred and eightâone healthcare professionals, 41 researchers and 110 patients, representing 56 countries, participated.
Methods
Modified Delphi method and Modified Nominal Group Technique.
Results
A longâlist of 116 potential core outcomes was developed by combining the outcomes reported in 79 preâeclampsia trials with those derived from thematic analysis of 30 inâdepth interviews of women with lived experience of preâeclampsia. Fortyâseven consensus outcomes were identified from the Delphi process following which 14 maternal and eight offspring core outcomes were agreed at the consensus development meeting. Maternal core outcomes: death, eclampsia, stroke, cortical blindness, retinal detachment, pulmonary oedema, acute kidney injury, liver haematoma or rupture, abruption, postpartum haemorrhage, raised liver enzymes, low platelets, admission to intensive care required, and intubation and ventilation. Offspring core outcomes: stillbirth, gestational age at delivery, birthweight, smallâforâgestationalâage, neonatal mortality, seizures, admission to neonatal unit required and respiratory support.
Conclusions
The core outcome set for preâeclampsia should underpin future randomised trials and systematic reviews. Such implementation should ensure that future research holds the necessary reach and relevance to inform clinical practice, enhance women's care and improve the outcomes of pregnant women and their babies
Infliximab Reduces Endoscopic, but Not Clinical, Recurrence of Crohn's Disease After Ileocolonic Resection.
BACKGROUND & AIMS: Most patients with Crohn's disease (CD) eventually require an intestinal resection. However, CD frequently recurs after resection. We performed a randomized trial to compare the ability of infliximab vs placebo to prevent CD recurrence. METHODS: We evaluated the efficacy of infliximab in preventing postoperative recurrence of CD in 297 patients at 104 sites worldwide from November 2010 through May 2012. All study patients had undergone ileocolonic resection within 45 days before randomization. Patients were randomly assigned (1:1) to groups given infliximab (5 mg/kg) or placebo every 8 weeks for 200 weeks. The primary end point was clinical recurrence, defined as a composite outcome consisting of a CD Activity Index score >200 and a >/=70-point increase from baseline, and endoscopic recurrence (Rutgeerts score >/=i2, determined by a central reader) or development of a new or re-draining fistula or abscess, before or at week 76. Endoscopic recurrence was a major secondary end point. RESULTS: A smaller proportion of patients in the infliximab group had a clinical recurrence before or at week 76 compared with the placebo group, but this difference was not statistically significant (12.9% vs 20.0%; absolute risk reduction [ARR] with infliximab, 7.1%; 95% confidence interval: -1.3% to 15.5%; P = .097). A significantly smaller proportion of patients in the infliximab group had endoscopic recurrence compared with the placebo group (30.6% vs 60.0%; ARR with infliximab, 29.4%; 95% confidence interval: 18.6% to 40.2%; P /=i2 (22.4% vs 51.3%; ARR with infliximab, 28.9%; 95% confidence interval: 18.4% to 39.4%; P < .001). Patients previously treated with anti-tumor necrosis factor agents or those with more than 1 resection were at greater risk for clinical recurrence. The safety profile of infliximab was similar to that from previous reports. CONCLUSIONS: Infliximab is not superior to placebo in preventing clinical recurrence after CD-related resection. However, infliximab does reduce endoscopic recurrence. ClinicalTrials.gov ID NCT01190839
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