6,697 research outputs found
Incommensurate-Commensurate Magnetic Phase Transition in SmRuAl
Magnetic properties of single crystalline SmRuAl have been
investigated by electrical resistivity, magnetic susceptibility, and specific
heat. We have confirmed the successive magnetic phase transitions at
K and K. Resonant x-ray diffraction has
also been performed to study the magnetic structures. Below , the
Sm moments order in an incommensurate structure with . The magnetic moments are oriented along the orthorhombic axis, which
coincides with the magnetization easy axis in the paramagnetic phase. A very
weak third harmonic peak is also observed at . The
transition at is a lock-in transition to the commensurate
structure described by . A well developed third harmonic peak
is observed at . From the discussion of the magnetic
structure, we propose that the long-range RKKY interaction plays an important
role, in addition to the strong nearest neighbor antiferromagnetic interaction.Comment: 11 pages, 12 figures, accepted in PR
Electronic musical instrument to generate musical tones to imitate a stringed instrument
Provided are an electronic musical instrument, computer Storage device, and method for generating tone. A sound source in an electronic musical instrument generates a first tone at a first pitch in response to a first tone generation instruction received by an input device of the electronic musical instrument. A second tone generation instruction is received to generate a second tone at a second pitch while generating the first tone at the sound source. A determination is made of a pitch difference of the first and the second pitches. The sound source is controlled to generate the second tone and to not generate the first tone in response to determining that the pitch difference does not exceed a predetermined number of tones. The sound Source is controlled to generate the second tone in response to determining that the pitch difference exceeds the predetermined number of tones
Generating Tones with a Vibrato Effect
Provided are a method, computer storage device, and tone control device for generating tones with a vibrato effect. A determination is made of a key depression interval comprising a difference of a current time of a current note from a previous time of a previous note. A performance mode is set to a single tone mode, in which only one note is generated, or a polyphonic mode, in which multiple notes are simultaneously generated, based on the determined key depression interval. The tone is generated to output the current note with a first modulation magnitude in response to determining that the performance mode is the single tone mode. A tone is generated to output the current note with a second modulation magnitude in response to determining that the performance mode is the polyphonic mode, wherein the first modulation magnitude is greater than the second modulation magnitude
Electronic Musical Instrument
Provided are an electronic musical instrument, computer storage device, and method generating tones for held notes. Indication is made of held notes having pitches as held in response to receiving note-on information for the held notes from an input device of an electronic musical instrument while receiving hold information from a hold device of the electronic musical instrument. Note-on information is received for a received note having a pitch while generating the pitches for the held notes. Selection is made of one of the held notes to release according to a first selection criteria in response to determining that the pitch difference of the received note and at least one of the held notes does not exceed the predetermined number of tones or selection is made according to a second selection criteria if the pitch difference exceeds the predetermined number of tones
Adjusting a Level At Which to Generate a New Tone with a Current Generated Tone
Provided are a tone control device and a method for adjusting a volume level at which to generate a new tone and at least one current tone according to a target volume level and a current volume level. A note-on event associated with a received volume level is received from an input device. A current volume level is processed to determine a new volume level in response to receiving the note-on event while generating at least one current tone at the current volume level. The at least one current tone and a new tone associated with the received note-on event are generated at the new volume level
Rising trend in maternal mortality at the university of Maiduguri Teaching hospital
Context: Various interventions have been introduced to reduce the very high maternal mortality ratio in our environmentbut to date the success is only marginal at best.Objective: To determine the trend in maternal mortality in University of Maiduguri Teaching Hospital (UMTH).Methods: Analysis of records of all women who died in pregnancy, labour and puerperium[up to 42 days after a pregnancy event] in UMTH between January, 2006 and December, 2010 was conducted.Results: The maternal mortality ratio (MMR) was 1074/100,000 live births. The main causes of maternal mortality were eclampsia in 34.6% of cases, haemorrhage (9.1%), HIV(17.8%) and puerperal infections (7.5%). There was rising trend in maternal mortality ratio over the study period. Factors contributing to maternal death included advanced maternal age, grand-multiparity, illiteracy, non-utilization of antenatal care services and late presentation to hospital.Conclusion: The maternal mortality ratio in UMTH is in in the upward trend and many of the causes of maternal death are avoidable. HIV appears to be an emerging major contributor to maternal deaths. There istherefore the need to strengthen the existing maternal health care services in Maiduguri, Borno state.Key words:Maternal mortality, trends, causes, Maidugur
Kondo effect in CeX (X=S, Se, Te) studied by electrical resistivity under high pressure
We have measured the electrical resistivity of cerium monochalcogenices, CeS,
CeSe, and CeTe, under high pressures up to 8 GPa. Pressure dependences of the
antiferromagnetic ordering temperature , crystal field splitting, and
the anomaly of the Kondo effect have been studied to cover the whole
region from the magnetic ordering regime at low pressure to the Fermi liquid
regime at high pressure. initially increases with increasing pressure,
and starts to decrease at high pressure as expected from the Doniach's diagram.
Simultaneously, the behavior in the resistivity is enhanced, indicating
the enhancement of the Kondo effect by pressure. It is also characteristic in
CeX that the crystal field splitting rapidly decreases at a common rate
of K/GPa. This leads to the increase in the degeneracy of the state
and further enhancement of the Kondo effect. It is shown that the pressure
dependent degeneracy of the state is a key factor to understand the
pressure dependence of , Kondo effect, magnetoresistance, and the peak
structure in the temperature dependence of resistivity.Comment: 9 pages, 5 figures, accepted for publication in J. Phys. Soc. Jp
A Nuclear Physics Program at the ATLAS Experiment at the CERN Large Hadron Collider
The ATLAS collaboration has significant interest in the physics of
ultra-relativistic heavy ion collisions. We submitted a Letter of Intent to the
United States Department of Energy in March 2002. The following document is a
slightly modified version of that LOI. More details are available at:
http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/SM/ionsComment: Letter of Intent submitted to the United States Department of Energy
Nuclear Physics Division in March 2002 (revised version
Persistent Currents in the Presence of a Transport Current
We have considered a system of a metallic ring coupled to two electron
reservoirs. We show that in the presence of a transport current, the persistent
current can flow in a ring, even in the absence of magnetic field. This is
purely a quantum effect and is related to the current magnification in the
loop. These persistent currents can be observed if one tunes the Fermi energy
near the antiresonances of the total transmission coefficient or the two port
conductance.Comment: To appear in Phys. Rev. B. Three figures available on reques
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