39,923 research outputs found
Exploring the evidence base for acupuncture in the treatment of Meniereās Syndrome ā A systematic review
Meniereās syndrome is a long-term, progressive disease that damages the balance and hearing
parts of the inner ear. To address the paucity of information on which evidence-based treatment
decisions should be made, a systematic review of acupuncture for Meniereās syndrome was
undertaken. The method used was a systematic review of English and Chinese literature, from
six databases for randomized, non-randomized and observational studies. All studies were
critically appraised and a narrative approach to data synthesis was adopted. Twenty-seven
studies were included in this review (9 in English and 18 in Chinese languages): three randomized
controlled trials, three non-randomized controlled studies and four pre-test, post-test
designs. All but one of the studies was conducted in China. The studies covered body acupuncture,
ear acupuncture, scalp acupuncture, fluid acupuncture point injection and moxibustion.
The studies were of varying quality. The weight of evidence, across all study types, is of beneficial
effect from acupuncture, for those in an acute phase or those who have had Meniereās
syndrome for a number of years. The review reinforces the importance of searching for studies
from English and Chinese literature. The transferability of the findings from China to a
Western context needs confirmation. Further research is also needed to clarify questions
around the appropriate frequency and number of treatment/courses of acupuncture. The
weight of evidence suggests a potential benefit of acupuncture for persons with Meniereās
disease, including those in an acute phase and reinforces the importance of searching for
published studies in the Chinese language
Complementary and Alternative Medicine (CAM) Therapies in the Treatment of Meniere's Syndrome: Reviewing the Evidence for Acupuncture
Effect of the surface temperature on surface morphology, deuterium retention and erosion of EUROFER steel exposed to low-energy, high-flux deuterium plasma
Samples of EUFROFER, a reduced activation ferritic martensitic steel, were exposed in the linear plasma device Pilot-PSI to a deuterium (D) plasma with incident ion energy of similar to 40 eV and incident D flux of 2-6 x10(23) D/m(2) s to fluences up to 10 27 D/m(2) at surface temperatures ranging from 400 K to 950 K. The main focus of the study lays on the surface morphology changes dependent on the surface temperature and the surface composition evolution, e.g., the enrichment in tungsten; but also the erosion and the D retention are studied. The created surface morphology varies strongly with surface temperature from needle-like to corral-like structures. The visible lateral length scale of the formed structures is in the range of tens of nanometres to above 1 mu m and exhibits two thermal activated regimes below and above similar to 770 K with activation energies of 0.2 eV and 1.3 eV, respectively. The lateral variation of the enrichment of heavy elements on the surface is correlated to this surface morphology at least in the high temperature regime, independent of the origin of the enrichment (intrinsic from the sample or deposited by the plasma). Also the erosion exhibits temperature dependence at least above similar to 770 K as well as a fluence dependence. The amount of deuterium retained in the top 500 nm is almost independent of the exposure temperature and is of the order of 10(18) D/m(2), which would correspond to a sub-monolayer D coverage on the surface. The retained D in the volume summing up over the complete samples exceeds the D retained close to the surface by one order of magnitude. (C) 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
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Identification of Trace Organic Components in the CR Chondrites by 4D TOFMS
This paper reports preliminary results of a 4D TOFMS study of CR chondrite organic material, highlighting the low-level organic species that may further reveal the complexity of parent body modification of interstellar precursors
Gypsy moths and American dog ticks: Space partners
An experiment intended for the space shuttle and designed to investigate the effects of weightlessness and total darkness on gypsy moth eggs and engorged American dog ticks is described. The objectives are: (1) to reevaluate the effects of zero gravity on the termination of diapause/hibernation of embryonated gypsy moth eggs, (2) to determine the effect of zero gravity on the ovipositions and subsequent hatch from engorged female American dog ticks that have been induced to diapause in the laboratory, and (3) to determine whether morphological or biochemical changes occur in the insects under examination. Results will be compared with those from a similar experiment conducted on Skylab 4
Unattended network operations technology assessment study. Technical support for defining advanced satellite systems concepts
The results are summarized of an unattended network operations technology assessment study for the Space Exploration Initiative (SEI). The scope of the work included: (1) identified possible enhancements due to the proposed Mars communications network; (2) identified network operations on Mars; (3) performed a technology assessment of possible supporting technologies based on current and future approaches to network operations; and (4) developed a plan for the testing and development of these technologies. The most important results obtained are as follows: (1) addition of a third Mars Relay Satellite (MRS) and MRS cross link capabilities will enhance the network's fault tolerance capabilities through improved connectivity; (2) network functions can be divided into the six basic ISO network functional groups; (3) distributed artificial intelligence technologies will augment more traditional network management technologies to form the technological infrastructure of a virtually unattended network; and (4) a great effort is required to bring the current network technology levels for manned space communications up to the level needed for an automated fault tolerance Mars communications network
Rapid toxicity detection in water quality control utilizing automated multispecies biomonitoring for permanent space stations
The objective of this study was to evaluate proposed design characteristics and applications of automated biomonitoring devices for real-time toxicity detection in water quality control on-board permanent space stations. Simulated tests in downlinking transmissions of automated biomonitoring data to Earth-receiving stations were simulated using satellite data transmissions from remote Earth-based stations
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