scholarly journals The Source of Five-Minute Period Photospheric Umbral Oscillations

1993 ◽  
Vol 105 ◽  
pp. 443
Author(s):  
Matthew J. Penn
Keyword(s):  
Minute Period ◽  
Umbral Oscillations

The source of 5 minute period photospheric umbral oscillations

1993 ◽  
Vol 415 ◽  
pp. 383 ◽  
Author(s):  
M. J. Penn ◽  
B. J. Labonte
Keyword(s):  
Minute Period ◽  
Umbral Oscillations

scholarly journals The Prevention of Gastric Inflation — A Neglected Benefit of Cricoid Pressure

1988 ◽  
Vol 16 (2) ◽  
pp. 139-143 ◽  
Author(s):  
S. P. Petito ◽  
W. J. Russell
Keyword(s):  
Cricoid Pressure ◽  
Mask Ventilation ◽  
Minute Period

The ability of cricoid pressure to prevent inflation of the stomach during mask ventilation of a patient was studied. Fifty patients were randomly allocated to either have or not have cricoid pressure applied during a three-minute period of standardised mask ventilation. Patients who had had cricoid pressure applied had less gas in the stomach after mask ventilation (P< 0.001). However, in a subgroup of patients considered difficult to ventilate, cricoid pressure seemed less successful in preventing gastric inflation. Cricoid pressure is a useful technique for reducing gastric inflation during mask ventilation, particularly in patients who are relatively easy to ventilate.

The behavioural responses of three different strains of Musca domestica (Diptera: Muscidae) to Alfacron bait in the laboratory

1992 ◽  
Vol 82 (4) ◽  
pp. 471-478 ◽  
Author(s):  
Z.A. Freeman ◽  
D.B Pinniger
Keyword(s):  
Musca Domestica ◽  
Resistant Strain ◽  
Behavioural Responses ◽  
Components Of Resistance ◽  
Minute Period ◽  
Proboscis Extension ◽  
Number Of Visits ◽  
Time Spent Feeding ◽  
Different Strains ◽  
Cage Test

AbstractA study was carried out to investigate the behavioural components of resistance in the Standlake strain of Musca domestica Linnaeus. The flies were collected from a poultry unit where azamethiphos spray-on-bait (Alfacron), had been regularly used to control the fly population. A no-choice laboratory cage test was used to observe the responses of the Standlake resistant strain to baits and compare it with two other strains namely, Sparsholt resistant and Cooper susceptible. The baits used were, Alfacron, sugar and analytical grade azamethiphos, sugar alone, and a blank target as control. Only female flies were used, each strain was exposed separately to each bait over a 50 minute period and the responses were recorded with a datalogger. The responses (per fly) recorded during each test period were: the number of visits to a bait; the time spent on a bait; the number of feeds and time spent feeding on the bait defined as the number of proboscis contacts and the length of time of proboscis contact with the bait. Knockdown of flies was recorded at the end of each test. All strains showed differences in their responses to baits. The Standlake strain showed the greatest difference to responses to Alfacron, with inhibition of proboscis extension when flies landed on the bait and a lower proboscis contact when extended, resulting in fewer flies being knocked down by Alfacron than by the sugar and azamethiphos bait. This suggested that inhibition of feeding on the Alfacron bait by the Standlake strain was caused by formulation components or contaminants and not the active insecticide ingredient, azamethiphos.

ANENCEPHALIC ORGAN DONORS

PEDIATRICS ◽  
1989 ◽  
Vol 83 (2) ◽  
pp. A42-A42
Author(s):  
Student
Keyword(s):  
Brain Death ◽  
Low Dose ◽  
Organ Donors ◽  
Policy Choices ◽  
Minute Period ◽  
Definite Time ◽  
Periodic Testing ◽  
Basic Protocol ◽  
Brain Dead ◽  
Canadian Group

[There are] two policy choices: we can abandon attempts to justify use of anencephalic infants as organ donors because there is currently no clinically accepted means to declare brain death in these infants; or we can carry out the research necessary to establish a clinically valid procedure for doing so. A Canadian group has decided to take the second route and experiment on methods to use as organ donors anencephalic newborns who can be validly declared brain-dead on classic criteria. The group has developed a basic protocol that calls for the parents to agree, prior to birth, that: (1) the infant will be resuscitated; (2) periodic testing will be done to determine brain death (removal from the ventilator at six-to-twelve-hour intervals for a ten-minute period to determine ability to breathe spontaneously; (3) organ donation is acceptable; and (4) a definite time limit (to be determined by the parents but not more than fourteen days) after which the infant will be removed from the ventilator and permitted to die. Low-dose morphine is administered to prevent potential suffering on the part of the infant, although whether anencephalic newborns can suffer is unknown.

Separation Protest in Day-Care and Home-Reared Infants

PEDIATRICS ◽  
1975 ◽  
Vol 55 (2) ◽  
pp. 171-175
Author(s):  
Richard B. Kearsley ◽  
Rebecca Hartmann ◽  
Philip R. Zelazo ◽  
Jerome Kagan
Keyword(s):  
Day Care ◽  
Family Background ◽  
Young Infant ◽  
Care Program ◽  
Ordinal Position ◽  
Psychological Processes ◽  
Minute Period

Separation protest was measured by the onset and duration of fretting or crying in 24 day-care and 28 home-reared infants during a two-minute period of isolated separation from their mothers in an unfamiliar room. Separation episodes were repeated under similarly controlled circumstances at two-month intervals from 3½ through 13½ months and at 20 months of age. The composition of the daycare and home-reared groups was similar for sex, ordinal position, and family background. Day-care and home-reared infants showed similar patterns in the manifestation of separation protest over age, with sharp reductions in latency to crying and marked increases in the occurrence of crying at 9½ and 13½ months. These results suggest that the psychological processes underlying separation protest are not meterially altered by the continuing presence of the young infant in a day-care program designed to meet both his physical and psychological requirements.

Where do running penumbral waves emerge in chromosphere?

2018 ◽  
Vol 13 (S340) ◽  
pp. 155-156
Author(s):  
T. G. Priya ◽  
Jiangtao Su ◽  
Robertus Erd̎elyi
Keyword(s):  
Active Region ◽  
Active Region Noaa ◽  
Long Period ◽  
Wave Guides ◽  
Spiral Structures ◽  
Region Noaa ◽  
Umbral Oscillations

AbstractThe earlier work on the oscillatory phenomena in sunspot structures have supported in validating the detection of long-period oscillations, which are generated by the photospheric umbral response to the five minute p-mode global oscillations. We report here on the events of 3- min umbral oscillations which are detected within a duration of one hour from a single-polarity sunspot of active region NOAA 12132. The umbral oscillations that appear first around umbral boundaries is speculated to be excited by the wavefronts at the umbral-penumbral boundaries due to sub-photospheric or photospheric granular buffetings. The appearance of the wavefronts in spiral structures suggests that the wave guides are twisted. In addition, the newly formed running penumbral waves (RPWs) appears to be connected with the preceding RPWs.

scholarly journals Variation in SARS-CoV-2 bioaerosol production in exhaled breath

2021 ◽  
Author(s):  
Renu Verma ◽  
Eugene Kim ◽  
Nicholas Degner ◽  
Katharine S. Walter ◽  
Upinder Singh ◽  
...  
Keyword(s):  
Viral Load ◽  
Nasal Swab ◽  
Face Mask ◽  
Exhaled Breath ◽  
Substantial Variation ◽  
Minute Period

Using face mask bioaerosol sampling, we found substantial variation between individuals in SARS-CoV-2 copies exhaled over a 15-minute period, which moderately correlated with nasal swab viral load. Talking was associated with a median of 2 log10 greater exhaled viral copies. Exposure varies substantially between individuals but may be risk stratified by nasal swab viral load and whether the exposure involved conversation.

scholarly journals An electronic valve controller for current control during the recording of oxygen consumption in aquatic animals

1989 ◽  
Vol 8 (2) ◽  
pp. 74-76
Author(s):  
H. H. Du Preez ◽  
E. Grobler ◽  
J. M. Bell
Keyword(s):  
Oxygen Consumption ◽  
Control System ◽  
Oxygen Sensor ◽  
Aquatic Organisms ◽  
Current Control ◽  
Automatic Recording ◽  
Aquatic Animals ◽  
Power Circuit ◽  
Minute Period

A control system is described which allows the automatic recording of the oxygen consumption of five aquatic organisms and one control. The electronic valve controller operates six three-way valves which permit water from each of the six respiration chambers to flow successively past the oxygen sensor. A 38.4 kHz quartz cristal oscillator ensures a ten minute period and is not affected by disturbances on the power circuit.

scholarly journals ANALYZING ABNORMAL RETURN BEFORE AND AFTER THE ANNOUNCEMENT OF MERGER AND ACQUISITION IN 2018

2018 ◽  
Vol 1 (2) ◽  
pp. 14-22
Author(s):  
Sonny Haryanto ◽  
Umi Mardiyati ◽  
Agung Dharmawan Buchdadi
Keyword(s):  
Mergers And Acquisitions ◽  
Stock Price ◽  
Abnormal Return ◽  
Abnormal Returns ◽  
T Test ◽  
Testing Hypotheses ◽  
Paired Sample ◽  
Minute Period ◽  
Before And After ◽  
Observation Period

This study aims to analyze the abnormal returns before and after the announcement of mergers and acquisitions in the companies listed on the IDX 2018. In this study the observation period taken was three days before and after the announcement of mergers and acquisitions with the number of samples observed were 9 companies. The method for calculating abnormal returns used is the market adjusted return by using an intraday stock price of 15 minutes. Based on testing hypotheses conducted by paired sample t-test, it was found that there were no significant differences in abnormal returns before and after the announcement of mergers and acquisitions in each 15 minute period.

scholarly journals Mast Cells and Nerve Signal Conduction in Acupuncture

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Na Yin ◽  
Hongwei Yang ◽  
Wei Yao ◽  
Ying Xia ◽  
Guanghong Ding
Keyword(s):  
Mast Cells ◽  
Sprague Dawley ◽  
Nerve Signal ◽  
Afferent Nerves ◽  
Sd Rats ◽  
Minute Period ◽  
Root Potential ◽  
Internal Relations ◽  
Signal Production ◽  
Sodium Cromoglicate

Nerve and mast cells are densely distributed around acupoints in connective tissue. To explore the internal relations between them in acupuncture effect, we examined dorsal root potential (DRP) response to acupuncture at Zusanli (ST36) under sodium cromoglicate (DSCG, a mast cell stabilizer) intervention in anesthetized Sprague-Dawley (SD) rats. We used single unit nerve recording techniques to collect nerve signals from DRP afferent nerves for a 45-minute period that includes 4 stages, that is, base, drug absorption, acupuncture, and recovery stages. We analyzed the recorded signals from time-domain and frequency-domain perspectives. The results showed that once acupuncture needle was inserted, twisting needle excited more nerves discharges than those at base discharges in ACU (from 35.1 ± 7.2 to 47 ± 9.2 Hz,P=0.004), and there existed the same trend in Saline + ACU group (from 23.8 ± 2.6 to 29.8 ± 4.2 Hz,P=0.059). There was no change of nerve discharges under twisting needle with injection of DSCG (from 34.8 ± 5.3 to 34.7 ± 4.4 Hz,P=0.480). We conclude that acupuncture manipulation promotes neural signal production and DSCG could partly inhibit nerve discharges.

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