1,863 research outputs found
Caveat Viator: The Duty to Wear Seat Belts under Comparative Negligence Law
The first portion of this article will attempt to show that neither judicial nor legislative reluctance, nor its underlying reasoning, is justifiable in light of the current state of law and society. Substantial evidence will be presented to demonstrate the need for our society to adopt the seat belt habit and for the law to recognize and respond to this societal need. Reactions of courts and legislative bodies to suggestions of mandated use are then explored as a preliminary to an analysis of the common law basis for adoption of the seat belt rule. A careful explanation will then be presented regarding introduction and application of the seat belt rule under Washington\u27s comparative negligence law. Finally, it is hoped that the article will be of use to legislators, judges and lawyers alike, not only in Washington, but in all jurisdictions contemplating changes in the law relating to the use and misuse of our insolent chariots
Kinetic study of adsorption and photo-decolorization of Reactive Red 198 on TiO2 surface
Recycling and reuse of wastewater after purification will reduce the environmental pollution as well as fulfill the increasing demand of water. Adsorption-based water treatment process is very popular for dye-house wastewater treatment. The present study deals with treatment of wastewater contaminated by reactive dye. TiO2 is used as adsorbent and the spent adsorbent has been regenerated by Advanced Oxidation Process (AOP), without using any other chemicals. TiO2 adsorbs dye molecules and then those dye molecules have been oxidized via a photocatalytic reaction in presence of UV irradiation. Kinetics of dye adsorption and photocatalytic oxidation reaction has been developed in this study. Photocatalyst adsorbent (TiO2) has been reused several times after regeneration. The activity of catalyst decreases after each cycle; due to poisoning cause by intermediate by-products. Kinetic of this catalyst deactivation has been incorporated with L–H model to develop the photocatalytic reaction kinetic model
3-FluoroÂsalicylaldoxime at 6.5 GPa
3-FluoroÂsalicylaldoxime, C7H6FNO2, unlike many salicylaldoxime derivatives, forms a crystal structure containing hydrogen-bonded chains rather than centrosymmetric hydrogen-bonded ring motifs. Each chain interÂacts with two chains above and two chains below via π–π stacking contacts [shortest centroid–centroid distance = 3.295 (1) Å]. This structure at 6.5 GPa represents the final point in a single-crystal compression study
A model for predicting dissolved organic carbon distribution in a reservoir water using fluorescence spectroscopy
A number of water treatment works (WTW) in the north of England (UK) have
experienced problems in reducing the dissolved organic carbon (DOC) present in
the water to a sufficiently low level. The problems are experienced in autumn/
winter when the colour increases and the coagulant dose at the WTW needs to be
increased in order to achieve sufficient colour removal. However, the DOC
content of the water varies little throughout the year. To investigate this
further, the water was fractionated using resin adsorption techniques into its
hydrophobic (fulvic and humic acid fractions) and hydrophilic (acid and non-acid
fractions) components. The fractionation process yields useful information on
the changing concentration of each fraction but is time consuming and labour
intensive. Here, a method of rapidly determining fraction concentration was
developed using fluorescence spectroscopy. The model created used synchronous
spectra of fractionated material compared against bulk water spectra and
predicted the fraction concentrations to within 10% for a specific water. The
model was unable to predict fraction concentrations for waters from a different
watershed
Salicylaldehyde hydrazones: buttressing of outer sphere hydrogen-bonding and copper-extraction properties
Salicylaldehyde hydrazones are weaker copper extractants than their oxime derivatives, which are used in hydrometallurgical processes to recover ~20 % of the world’s copper. Their strength, based on the extraction equilibrium constant Ke, can be increased by nearly three orders of magnitude by incorporating electron-withdrawing or hydrogen-bond acceptor groups (X) ortho to the phenolic OH group of the salicylaldehyde unit. Density functional theory calculations suggest that the effects of the 3-X substituents arise from a combination of their influence on the acidity of the phenol in the pH-dependent equilibrium, Cu2+ + 2Lorg ⇌ [Cu(L–H)2]org + 2H+, and on their ability to ‘buttress’ interligand hydrogen bonding by interacting with the hydrazone N–H donor group. X-ray crystal structure determination and computed structures indicate that in both the solid state and the gas phase, coordinated hydrazone groups are less planar than coordinated oximes and this has an adverse effect on intramolecular hydrogen-bond formation to the neighbouring phenolate oxygen atoms
Forage Quality Characteristics of \u3cem\u3eLotus tenuis\u3c/em\u3e, Narrow-Leaf Birdsfoot Trefoil
Narrow-leaf birdsfoot trefoil (Lotus tenuis Waldst. & Kit.) is a herbaceous perennial legume of Mediterranean origin, which can grow in saline and waterlogged environments (Teakle et al. 2010). If this species is to be cultivated in regions constrained by these abiotic factors, it is also vital that herbage produced has a forage quality acceptable for ruminant production. In addition, proanthocyanidin (PA) content is important, and legume species can cause animal production issues if PA content is low, (\u3c 0.02%), e.g. fro-thy bloat, or high (\u3e 5 %), e.g. decreased palatability and digestibility (Larkin et al. 1999). This study examined the PA content and forage quality of a range of L. tenuis accessions being evaluated for improved seed production and suitability for introduction into grazing systems where salinity and waterlogging are a common problem
Altimetric system: Earth observing system. Volume 2h: Panel report
A rationale and recommendations for planning, implementing, and operating an altimetric system aboard the Earth observing system (Eos) spacecraft is provided. In keeping with the recommendations of the Eos Science and Mission Requirements Working Group, a complete altimetric system is defined that is capable of perpetuating the data set to be derived from TOPEX/Poseidon, enabling key scientific questions to be addressed. Since the scientific utility and technical maturity of spaceborne radar altimeters is well documented, the discussion is limited to highlighting those Eos-specific considerations that materially impact upon radar altimetric measurements
A pragmatic randomised controlled trial comparing the efficacy of a femoral nerve block and periarticular infiltration for early pain relief following total knee arthroplasty
Aims
The aim of this study was to compare the effectiveness of a femoral nerve block and a periarticular infiltration in the management of early post-operative pain after total knee arthroplasty (TKA).
Patents and methods
A pragmatic, single centre, two arm parallel group, patient blinded, randomised controlled trial was undertaken. All patients due for TKA were eligible. Exclusion criteria included contraindications to the medications involved in the study and patients with a neurological abnormality of the lower limb. Patients received either a femoral nerve block with 75 mg of 0.25% levobupivacaine hydrochloride around the nerve, or periarticular infiltration with 150 mg of 0.25% levobupivacaine hydrochloride, 10 mg morphine sulphate, 30 mg ketorolac trometamol and 0.25 mg of adrenaline all diluted with 0.9% saline to make a volume of 150 ml.
Results
A total of 264 patients were recruited and data from 230 (88%) were available for the primary analysis. Intention-to-treat analysis of the primary outcome measure of a visual analogue score for pain on the first post-operative day, prior to physiotherapy, was similar in both groups. The mean difference was -0.7 (95% confidence interval (CI) -5.9 to 4.5; p = 0.834). The periarticular group used less morphine in the first post-operative day compared with the femoral nerve block group (74%, 95% CI 55 to 99). The femoral nerve block group reported 39 adverse events, of which 27 were serious, in 31 patients and the periarticular group reported 51 adverse events, of which 38 were serious, in 42 patients up to six weeks post-operatively. None of the adverse events were directly attributed to either of the interventions under investigation.
Conclusion
Periarticular infiltration is a viable and safe alternative to femoral nerve block for the early post-operative relief of pain following TKA. Cite this article: Bone Joint J 2017;99-B:904-11
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