Search results for "Back"

Clinico-Biomechanical Issues and Dynamic Stabilization When Considering Stem Cell Treatment for Degenerative Disc Disease

2013

After reading the article published in Transplantation (1), scientists are to be congratulatedVespecially with the clinical results as published. Looking for alternatives to avoid fusion is part of function-preserving spine care, as it should be the last option to be undertaken while keeping the debate open (2, 3). Nevertheless, we would like to point out some questions that arise from a clinical point of view from our daily surgical practice. First, several clinical presentations and procedures are compared without taking into account that they are different treatments applied for different disc disease situations (discectomy is performed for disc herniation with radicular symptoms, disc p…

A 12-year-old boy with severe back pain and blast-like cells in the CSF

1999

Protein Corona: Prevention of Dominant IgG Adsorption on Nanocarriers in IgG‐Enriched Blood Plasma by Clusterin Precoating (Adv. Sci. 10/2019)

2019

The development of nanocarriers for drug delivery is challenged by individual blood composition fluctuations. In article number 1802199, Svenja Morsbach and co‐workers report the accumulation of immunoglobulins in the protein corona of nanocarriers in IgG‐enriched blood plasma resulting in increased cell uptake. This could be prevented by pre‐coating the nanocarriers with the “stealth” protein clusterin. Cover design by Stefan Schuhmacher.

GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences

2018

The LIGO Scientific and Virgo Collaborations have announced the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron stars estimated from this event suggests that distant, unresolvable binary neutron stars create a significant astrophysical stochastic gravitational-wave background. The binary neutron star background will add to the background from binary black holes, increasing the amplitude of the total astrophysical background relative to previous expectations. In the Advanced LIGO-Virgo frequency band most sensitive to stochastic backgrounds (near 25 Hz), we predict a total astrophysical background with amplitude $\Omega_{\rm…

Therapeutic aquatic exercise in the treatment of low back pain: a systematic review.

2008

Objective: To examine the effectiveness of therapeutic aquatic exercise in the treatment of low back pain. Design: A systematic review. Methods: A search was performed of PEDro, CINAHL (ovid), PUBMED, Cochrane Controlled Trials Register and SPORTDiscus databases to identify relevant studies published between 1990 and 2007. Population: Adults suffering from low back pain. Intervention: All types of therapeutic aquatic exercise. Comparison: All clinical trials using a control group. Outcomes: Oswestry Disability Index, McGill Pain Questionnaire, subjective assessment scale for pain (e.g. visual analogue scale) and number of work days lost as a direct result of low back pain. Methodological q…

Variance estimation and asymptotic confidence bands for the mean estimator of sampled functional data with high entropy unequal probability sampling …

2013

For fixed size sampling designs with high entropy it is well known that the variance of the Horvitz-Thompson estimator can be approximated by the H\'ajek formula. The interest of this asymptotic variance approximation is that it only involves the first order inclusion probabilities of the statistical units. We extend this variance formula when the variable under study is functional and we prove, under general conditions on the regularity of the individual trajectories and the sampling design, that we can get a uniformly convergent estimator of the variance function of the Horvitz-Thompson estimator of the mean function. Rates of convergence to the true variance function are given for the re…

A Comparison of Solar and Conventional Pavements Via Life Cycle Assessment

2023

The sustainable and green development of roads is lately receiving significant attention. As a multi-functional road capable of both accommodating traffic loads and generating clean energy, solar pavements exhibit a strategic opportunity for the future path of development in the road engineering. Although solar pavements have significant environmental benefits during their operation, they can lead to increased carbon emissions during the process of material preparation, construction, maintenance, etc. Therefore, it is essential to implement the framework of Life Cycle Assessment (LCA) to investigate their potential environmental impacts and/or benefits. Hence, this paper systematically anal…

A limited feedback scheme based on spatially correlated channels for coordinated multipoint systems

2012

High spectral efficiency can be achieved in the downlink of multi-antenna coordinated multi-point systems provided that the multiuser interference is appropriately managed at the transmitter side. For this sake, downlink channel information needs to be sent back by the users, thus reducing the rate available at the uplink channel. The amount and type of feedback information required has been extensively studied and many limited feedback schemes have been proposed lately. A common pattern to all of them is that achieving low rates of feedback information is possible at the cost of increasing complexity at the user side and, sometimes, assuming that some statistics of the channel are known. I…

Atgriezeniskā skaņas kanāla un ieraksta režīma testu automatizācija Axia Fusion pultīm

2017

Kvalifikācijas darbs ir izstrādāts, lai pārbaudītu vienas no "Telos Alliance" produkta, Axia Fusion Consoles, pielāgotajām un noklusētajām atpakaļejošajām opcijām un ieraksta režīmu opcijām. Pārbaudes process ietver atbilstošu konfigurāciju un iestatījumu iestatīšanu katram testa scenārijam un audio līmeņu pārbaudei vai vērtību iegūšanai, lai noskaidrotu, vai rezultāts atbilst sagaidāmam guvumam. Backfeed Test ir sadalīts divos dažādos moduļos: Default Backfeed tests un Custom Backfeed tests. Katrs modulis tiek tālāk iedalīts trīs dažādos moduļos; Konfigurācija, funkcionālie un testēšanas moduļi, kas atbilst to funkcijām un neatkarībai, kā arī galvenais modulis, kas organizē visus pārējos m…

RoadMic: Road Surface Monitoring Using Vehicular Sensor Networks with Microphones

2010

Road surface analysis including pothole reports is an important problem for road maintainers and drivers. In this paper we propose a methodology for pothole detection using mobile vehicles equipped with off the shelf microphone and global positioning devices attached to an on-board computer. The approach is generic enough to be extended for other kind of event detection using different sensors as well. The vehicles are driving on public streets and measuring pothole induced sound signals. Our approach was tested and evaluated by real world experiments in a road segment for which we had established the ground truth beforehand. The results show pothole detection with high accuracy despite the…