The therapeutic effect of a person staying in a salt mine due to the low background level of atomic radiation

The therapeutic effect of people staying in salt mines is currently explained by the fact that people inhale salt spray particulates. Based on an experimental study, the article proves that this therapeutic effect is the result of super-low levels of atomic radiation in the space of salt mines.

Download Full-text

EXPERIMENTAL STUDY ON THE POSSIBILITY OF REDUCING BACKGROUND FOR THE GAMMA COINCIDENCE SPECTROMETER WITH HIGH PURE GERMANIUM DETECTORS

Science and Technology Development Journal ◽

10.32508/stdj.v15i2.1797 ◽

2012 ◽

Vol 15 (2) ◽

pp. 15-26

Author(s):

Hien Sy Dinh

Keyword(s):

Experimental Study ◽

Nuclear Reactions ◽

Background Level ◽

Experimental Results ◽

Environmental Research ◽

Low Background ◽

Hpge Detectors ◽

Gamma Coincidence ◽

Coincidence Spectrometer ◽

Software And Hardware

Gamma coincidence spectrometers with HPGe detectors are used for environmental research, nuclear reactions (n, g), (n, 2g) due to Compton backgrounds of their gamma spectra are very low. In this work, three types of coincidence spectrometers such as gamma coincidence spectrometer, gamma coincidence spectrometers with TAC and sum coincidence spectrometer using HPGe are described. Some experimental results obtained by using gamma coincidence spectrometers are presented. Especially, taking advantages of the software and hardware of the sum coincidence spectrometer used for research of nuclear reactions (n, g), (n, 2g), we have converted the spectrometer to one with very low background level.

Download Full-text

Dispersion and abundance of Maritrema arenaria in Semibalanus balanoides in north-east Ireland

Journal of Helminthology ◽

10.1017/s0022149x00012062 ◽

1990 ◽

Vol 64 (2) ◽

pp. 151-160 ◽

Cited By ~ 5

Author(s):

H. Carrol ◽

W. I. Montgomery ◽

R. E. B. Hanna

Keyword(s):

Size Structure ◽

Background Level ◽

Host Population ◽

Parasite Infection ◽

Semibalanus Balanoides ◽

Low Background ◽

Digenean Trematode ◽

North East ◽

Parasitic Burden ◽

A Site

ABSTRACTInfection of the barnacle Semibalanus balanoides with the digenean trematode Maritrema arenaria was investigated at 17 sites along the Co. Down coastline. There was a low background level of infection. Abundance of M. arenaria, however, was substantially greater at sites close to fish factories and at a site close to a sewage works. Aggregation of M. arenaria in S. balanoides was least marked at low mean parasite burdens. The parasitic burden was related more closely to barnacle size at a site of heavy infection than at one with a low abundance. There was a significant association between height on the shore and number of encysted metacercariae in S. balanoides. This was independent of variation in host size. It is concluded that relationships that bring about overdispersion of digeneans, such as that between the size-structure of the host population and parasite infection, may be dependent on the overall abundance of the parasite.

Download Full-text

Therapeutic effect of andiroba oil (Carapa guianensis Aubl.) against oral mucositis: an experimental study in golden Syrian hamsters

Clinical Oral Investigations ◽

10.1007/s00784-017-2300-2 ◽

2017 ◽

Vol 22 (5) ◽

pp. 2069-2079 ◽

Cited By ~ 2

Author(s):

Ana Márcia Viana Wanzeler ◽

Sergio Melo Alves Júnior ◽

Jessica Teixeira Gomes ◽

Eduardo Henrique Herbster Gouveia ◽

Higor Yuri Bezerra Henriques ◽

...

Keyword(s):

Experimental Study ◽

Therapeutic Effect ◽

Oral Mucositis ◽

Syrian Hamsters ◽

Carapa Guianensis

Download Full-text

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Sensors ◽

10.3390/s20020411 ◽

2020 ◽

Vol 20 (2) ◽

pp. 411 ◽

Cited By ~ 8

Author(s):

Jordi-Roger Riba ◽

Álvaro Gómez-Pau ◽

Manuel Moreno-Eguilaz

Keyword(s):

Experimental Study ◽

High Voltage ◽

Low Cost ◽

Partial Discharge ◽

Radio Interference ◽

Uv Spectrum ◽

Aerospace Applications ◽

Low Levels ◽

Imaging Sensors ◽

Imaging Sensor

Visual corona tests have been broadly applied for identifying the critical corona points of diverse high-voltage devices, although other approaches based on partial discharge or radio interference voltage measurements are also widely applied to detect corona activity. Nevertheless, these two techniques must be applied in screened laboratories, which are scarce and expensive, require sophisticated instrumentation, and typically do not allow location of the discharge points. This paper describes the detection of the visual corona and location of the critical corona points of a sphere-plane gap configurations under different pressure conditions ranging from 100 to 20 kPa, covering the pressures typically found in aeronautic environments. The corona detection is made with a low-cost CMOS imaging sensor from both the visible and ultraviolet (UV) spectrum, which allows detection of the discharge points and their locations, thus significantly reducing the complexity and costs of the instrumentation required while preserving the sensitivity and accuracy of the measurements. The approach proposed in this paper can be applied in aerospace applications to prevent the arc tracking phenomenon, which can lead to catastrophic consequences since there is not a clear protection solution, due to the low levels of leakage current involved in the pre-arc phenomenon.

Download Full-text

The stigma of a criminal record in the labour market in Spain: An experimental study

European Journal of Probation ◽

10.1177/2066220319843694 ◽

2019 ◽

Vol 11 (1) ◽

pp. 14-29

Author(s):

Marti Rovira

Keyword(s):

Experimental Study ◽

Labour Market ◽

Experimental Methodology ◽

Criminal Record ◽

Former Offenders ◽

Job Offers ◽

Low Levels

The aim of this research is to determine whether the stigma of a criminal record should be considered in understanding the precarious conditions of individuals with convictions in the Spanish labour market. Previous studies have been unable to separate this effect from other explanations such as low levels of education or the breakdown of networks resulting from the conviction. Following Pager (2007), this study adopts the experimental methodology of the audit tests, in which matched fictitious curricula vitae, differing only in the mention of a conviction, are sent to real job offers, to verify whether there is a difference in the number of responses to each CV. The results show that skilled former offenders are discriminated in the Spanish labour market as a result of the stigma of a criminal record.

Download Full-text

Experimental study on therapeutic effect of Dabuyin Wan on true precocious puberty in eemale rats

China Journal of Chinese Materia Medica ◽

10.4268/cjcmm20130319 ◽

2013 ◽

Keyword(s):

Experimental Study ◽

Therapeutic Effect ◽

Precocious Puberty

Download Full-text

Detection of mantle CO2 in an underground salt mine via long-term and high-resolution monitoring by laser-based isotope techniques

10.5194/egusphere-egu2020-8197 ◽

2020 ◽

Author(s):

Alexander H. Frank ◽

Robert van Geldern ◽

Anssi Myrttinen ◽

Axel Zimmer ◽

Martin Zimmer ◽

...

Keyword(s):

Ambient Air ◽

High Temporal Resolution ◽

Anthropogenic Influences ◽

Salt Mine ◽

Central Germany ◽

Salt Mines ◽

Set Up ◽

The One ◽

Isotope System

Salt deposits may be affected by post-depositional CO2 intrusions. In central Germany, such CO2 contributions from the mantle may originate from Tertiary Rh&#246;n- and Vogelsberg-volcanism. The intrusion of those gases may cause technical and operational implications for storage caverns and salt mines.Carbon isotope compositions of CO2 are useful tools to differentiate between sources and are expressed as &#948;13C values in &#8240; versus an international standard known as the Vienna Pee Dee Belemnite (VPDB). Typical average endmember values for CO2 from the mantle are -5.1 &#8240;, while background air and anthropogenic influences range around averages of -11.9 &#8240; and -29.8&#8240;. Detection of fluctuations between these endmembers can be challenging with discrete sampling. This can be overcome by high-temporal resolution and long-term monitoring.Towards this purpose, a laser-based isotope system was set up in an active underground salt mine in central Germany. For 34 days, continuous measurements of &#948;13C and concentrations of CO2 were generated close to a site where mantle CO2 intrusions were suspected. A timer regularly switched intakes from two capillaries, of which one was placed inside a borehole and the other in ambient air of the mine. Measured CO2 concentrations ranged between 700 and 1600 ppmV, while &#948;13C values ranged between -21.5 &#8240; and -11.5 &#8240;. Lower concentrations coincided with more positive isotope values and occurred around weekends when anthropogenic influences in the mine were less.While influences of fresh air venting may have caused these weekly shifts, the admixture of mantle CO2 seemed to play a continuous role. This is because small differences between the capillary from the borehole and the one with ambient air existed throughout the time series. Our results indicate that short-term dynamics on the order of hours to days are overlain by admixtures mantle gas intrusions of CO2.

Download Full-text