6,229 research outputs found
Treatment of Abscessed Primary Molars Utilizing Lesion Sterilization and Tissue Repair: Literature Review and Report of Three Cases
Purpose: The purpose of this report was to review an emerging alternative treatment to pulpectomies and extractions for nonvital primary teeth called lesion sterilization and tissue repair (LSTR) and provide the results of three clinical case applications. LSTR is a noninstrumentation endodontic treatment that involves a triantibiotic mixture in a propylene glycol vehicle, which is used to disinfect root canal systems. This concept was developed by the cariology research unit of the School of Dentistry, Niigata University, Niigata, Niigata Prefecture, Japan. This article reviews the development of the technique, clinical procedures required for the technique, three clinical applications and radiographic documentation and follow-up, and a short literature review of the current evidence supporting its application in clinical practice
Evaluation of Anonymized ONS Queries
Electronic Product Code (EPC) is the basis of a pervasive infrastructure for
the automatic identification of objects on supply chain applications (e.g.,
pharmaceutical or military applications). This infrastructure relies on the use
of the (1) Radio Frequency Identification (RFID) technology to tag objects in
motion and (2) distributed services providing information about objects via the
Internet. A lookup service, called the Object Name Service (ONS) and based on
the use of the Domain Name System (DNS), can be publicly accessed by EPC
applications looking for information associated with tagged objects. Privacy
issues may affect corporate infrastructures based on EPC technologies if their
lookup service is not properly protected. A possible solution to mitigate these
issues is the use of online anonymity. We present an evaluation experiment that
compares the of use of Tor (The second generation Onion Router) on a global
ONS/DNS setup, with respect to benefits, limitations, and latency.Comment: 14 page
Temperature acclimatisation of swimming performance in the European Queen Scallop
The phenotypic plasticity of muscle performance and locomotory physiology allows the maintenance of essential activity capacity in the face of environmental change, and has been demonstrated in a wide phylogenetic range of eurythermal vertebrates. This study used the scallop, Aequipecten opercularis, as a model eurythermal invertebrate. Animals caught in different seasons demonstrated marked differences in their swimming performance and the relationship between, temperature and performance. When stimulated to swim at natural ranges of temperature, Winter (cold acclimatised), animals accelerated faster than autumn collected animals swimming at the same temperature (x 2 at 11degreesC) and attained higher velocities during jetting. The effects of acclimatisation were confined to the jetting phase and may be a mechanism for the maintenance of acceleration during predator-prey interactions. This is the first demonstration of the thermal acclimatisation of muscle performance in a mollusc and one of very few studies in invertebrates
Quantum Computing Assisted Medium Access Control for Multiple Client Station Networks
A medium access control protocol based on quantum entanglement has been
introduced by Berces and Imre (2006) and Van Meter (2012). This protocol
entirely avoids collisions. It is assumed that the network consists of one
access point and two client stations. We extend this scheme to a network with
an arbitrary number of client stations. We propose three approaches, namely,
the qubit distribution, transmit first election and temporal ordering
protocols. The qubit distribution protocol leverages the concepts of Bell-EPR
pair or W state triad. It works for networks of up to four CSs. With up to
three CSs, there is no probability of collision. In a four-CS network, there is
a low probability of collision. The transmit first election protocol and
temporal ordering protocols work for a network with any number of CSs. The
transmit first election builds upon the concept of W state of size
corresponding to the number of client stations. It is fair and collision free.
The temporal ordering protocol employs the concepts of Lehmer code and quantum
oracle. It is collision free, has a normalized throughput of 100% and achieves
quasi-fairness.Comment: 18 pages, 12 figures, 3 tables; manuscript under revie
Towards Coherent Neutrino Detection Using Low-Background Micropattern Gas Detectors
The detection of low energy neutrinos ( few tens of MeV) via coherent
nuclear scattering remains a holy grail of sorts in neutrino physics. This
uncontroversial mode of interaction is expected to profit from a sizeable
increase in cross section proportional to neutron number squared in the target
nucleus, an advantageous feature in view of the small probability of
interaction via all other channels in this energy region. A coherent neutrino
detector would open the door to many new applications, ranging from the study
of fundamental neutrino properties to true "neutrino technology".
Unfortunately, present-day radiation detectors of sufficiently large mass (
1 kg) are not sensitive to sub-keV nuclear recoils like those expected from
this channel. The advent of Micropattern Gas Detectors (MPGDs), new
technologies originally intended for use in High Energy Physics, may soon put
an end to this impasse. We present first tests of MPGDs fabricated with
radioclean materials and discuss the approach to assessing their sensitivity to
these faint signals. Applications are reviewed, in particular their use as a
safeguard against illegitimate operation of nuclear reactors. A first
industrial mass production of Gas Electron Multipliers (GEMs) is succinctly
described.Comment: Presented at the 2002 IEEE Nuclear Science Symposium and Medical
Imaging Conference, Norfolk VA, November 10-16. Submitted to IEEE Tran. Nucl.
Sci. Five pages, eight figure
- …