Progeny concentrations. Medical search. Frequent questions

Therefore, exposures to all welding emissions should be reduced to the lowest feasible concentrations using state-of-the-art engineering controls and work practices. (cdc.gov)
This document examines the occupational health risks associated with exposures to radon progeny (radon and its short-lived, alpha-radiation- emitting, radioactive decay products) in underground mines, and it establishes criteria for minimizing the risks encountered by miners. (cdc.gov)
These limits are to be considered the upper boundaries of exposure, and every effort should be made to reduce exposures to the lowest concentrations possible. (cdc.gov)

The elements that radon changes into are called radon daughters or radon progeny. (cdc.gov)
Radon is an alpha-particle emitter that decays with a half-life of 3.8 d into a short-lived series of progeny that have been referred to historically as radon daughters but are now more often termed radon-decay products or radon progeny ( Figure 1-1 ). (nationalacademies.org)

Through radon emanation measurements, the expected \(^{222}\) Rn activity concentration in XENONnT is determined to be 4.2 ( \(^{+0.5}_{-0.7}\) ) \(\upmu \) Bq/kg, a factor three lower with respect to XENON1T. (springer.com)
Although radon gas concentrations were below the Occupational Safety and Health Administration Permissible Exposure Limit, employees working in the cavern have the potential to accrue ionizing radiation dose in excess of the annual effective dose limit recommended by the National Council on Radiation Protection and Measurements due to a high unattached fraction of radon progeny. (cdc.gov)
Aerosol loss in air intake systems potentially hampers the application of one-filter systems for progeny-based atmospheric 222 radon ( 222 Rn) measurements. (copernicus.org)
Based on our experiments, an empirical correction function for 222 Rn progeny measurements when sampling through long Decabon tubing was developed, allowing correction of respective measurements for this particular experimental setting (tubing type and diameter, flow rate, aerosol size distribution) with an estimated uncertainty of 10-20 % for activity concentrations between 1 and 2 Bq m −3 and less than 10 % for activity concentrations above 2 Bq m −3 . (copernicus.org)

Inhalation exposure to radon delivers the Biomarkers of exposure to radon and its for to radon in indoor and outdoor air and gas and its progeny (e.g., 214Bi, 214Pb, progeny include the presence of radon drinking water. (cdc.gov)
The radiation dose from radon and its progeny is measured in terms of the energy that they impart to tissue (in units called gray or rem for public exposure, or working levels for occupational exposure). (cdc.gov)
A Recommended Standard for Occupational Exposure to Radon Progeny in Underground Mines. (cdc.gov)
Data from studies on both humans and animals demonstrate a direct link between exposure to radon progeny and lung cancer. (cdc.gov)
To determine a REL, NIOSH has weighed this evidence along with uncertainties in the data and the feasibility of controlling exposure to radon progeny in mines. (cdc.gov)
Exposure to radon and progeny in a tourist cavern. (cdc.gov)
The primary objective of this work was to characterize employee exposure to radon and progeny while performing guide/interpretation and concessions duties in a tourist cavern. (cdc.gov)
To conduct a proficiency test, ARLs are required to submit the devices to an accredited secondary radon chamber for exposure to known concentrations. (nrsb.org)

Similar to parity, the number of piglets born also affects progeny performance. (dsm.com)

The low density of PYY cells in the large intestine may be caused by a decreased number of stem cells and their progeny toward endocrine cells. (nih.gov)
To varying degrees, these fates also extend to the Such state stability is required in stem and progenitor cells to immediate progeny of stem cells, known as progenitor or support self-renewal and maintenance of the uncommitted transit-amplifying cells. (lu.se)
This strategy provides a useful tool for visualization and identification of neural progeny derived from human pluripotent stem cells. (lu.se)

Our new mechanistic model postulates that, for RNA viruses like TCV, SIE manifests a viral function that denies progeny viruses the chance of re-replicating their genomes in the cells of their "parents," and it collaterally targets highly homologous superinfecting viruses that are indistinguishable from progeny viruses. (frontiersin.org)
Virus infections are associated with significant alterations in host cells amino acids profiles that support biosynthetic demands necessary for production of viral progeny. (openbiochemistryjournal.com)

2014) demonstrated that serum IgG concentrations were higher and colostral IgA concentrations tended to increase in older parity sows when compared to first parity sows. (dsm.com)
Litter performance and progeny health status may be decreased in progeny derived from pri-miparous sows but improve with increasing parity. (nebraska.edu)

The objective was to evaluate litter performance, the production and passive transfer of Ig, and fecal microbial populations in progeny derived from first parity (P1) compared with fourth parity (P4) dams. (nebraska.edu)

Using an antiviral assay based on quantitative reverse transcription-polymerase chain reaction (qRT-PCR), we found that bLf reduced progeny virus yield by up to ∼84,6% in African green monkey kidney epithelial cells (Vero E6) and ∼68,6% in adenocarcinomic human alveolar basal epithelial cells (A549) at 1 mg/mL, a concentration previously shown to have low cytotoxicity. (biorxiv.org)

Radon is a naturally-occurring radioactive gas that changes into other radioactive substances, called progeny. (cdc.gov)

Serum thyrotropin (TSH) concentration remains the most sensitive screening test for hypothyroidism and for establishing the diagnosis of primary hypothyroidism. (medscape.com)
In the rare syndromes of thyroid hormone resistance, serum TSH levels are elevated in the presence of normal-to-high serum total T4 concentration. (medscape.com)
Measurement of serum T3 concentration, free or total, is not required to confirm the diagnosis of hypothyroidism. (medscape.com)
[ 4 ] Serum free T4 concentration is normal in TBG deficiency. (medscape.com)

Parity 1 progeny are more susceptible to disease, which can lead to higher mortality rates, greater variation in pig weights, and fewer pigs reaching market age. (dsm.com)

Report of Ambient Outdoor Radon and Indoor Radon Progeny Concentrations during November 1975 at Selected Locations in the Grants Mineral Belt, New Mexico. (epa.gov)
Determination of 239Pu airborne concentration alpha correction factor for a zinc sulfide detector via ambient 222Rn progeny air sampling. (uml.edu)
Here we present results from a study, determining 222 Rn progeny loss from ambient air sampled via 8.2 mm inner diameter (ID) Decabon tubing in the laboratory and from pre-installed 10 mm ID tubing at the Cabauw meteorological tower in the Netherlands. (copernicus.org)

Denaturing gradient gel electrophoresis (DGGE) was used to characterize similarity and diversity of fecal microbes among progeny. (nebraska.edu)

Litter performance, passive transfer of immunity, and progeny microbial ecology were affected by dam parity. (nebraska.edu)

Radon gas and progeny concentrations, fraction of unattached progeny, and other environmental parameters were evaluated in a popular tourist cavern in Southeastern New Mexico. (cdc.gov)

For example, it's well documented that progeny from gilts (Parity 1) have lower piglet birth weight and weaning weight. (dsm.com)
In conclusion, greater emphasis on both the sow parity and litter size must be considered among the key indicators for reproductive performance, as they have a huge impact on the number and quality of the progeny produced. (dsm.com)

Radon is primarily excreted via exhalation radon in U.S. homes is 1.25 pCi/L. www.atsdr.cdc.gov also occur during the mining of silver, tin, and radon progeny are excreted via the Sediment and Soil bertrandite and beryl ores, and other urine and/or feces. (cdc.gov)
However, multi-elemental (Li, Mg, Mn, Sr, and Ba) otolith signatures differed significantly between the two regions, primarily driven by differences in concentrations of Li and Ba. (frontiersin.org)

Radon gas concentrations in the cavern were elevated due to extremely low air exchange rates with substantial seasonal variation. (cdc.gov)
Variation in Leaf Photosynthesis among Wild Species in Genus Oryza and among the Progeny of Selected Crosses of the Wild species with a Rice Cultivar. (cropscience.org.au)

Since radon and its progeny are present together in rock, soil, water, air, and construction materials, you will be exposed to the low-level radiation they give off just by being near them. (cdc.gov)

Although the progeny of radon are now a well-recognized cause of lung-cancer, radon itself has again become a topic of controversy and public-health concern because it has been found to be a ubiquitous indoor air pollutant to which all persons are exposed (Cole 1993 and Proctor 1995 review the controversy). (nationalacademies.org)

Some average oncogenes are download the heritage genes, which can save called well with the presence N, for yield, the progression of genome from antitermination distribution and progeny from number. (scoutconnection.com)

We further propose that SIE may be evolutionarily selected to maintain an optimal error frequency in progeny genomes. (frontiersin.org)
Low concentrations of DNAm inhibitors slightly increased the frequency of colony-forming unit initiating cells. (nih.gov)
DNA was eluted in In this study we report the frequency of 100 µL molecular biology grade water and the CCR5 -delta 32 mutation in the Lebanese stored at -20 °C. DNA concentrations population. (who.int)

20 mIU/L) in the presence of low total T4 and free T4 concentrations suggest secondary or tertiary causes of hypothyroidism. (medscape.com)

With that in mind, this article discusses the importance of assessing sow productivity on a lifetime basis and how it's related to progeny performance. (dsm.com)
With that said, the importance of "optimizing" sow lifetime performance and longevity is crucial for maximizing the potential of the progeny health and performance efficiently, beyond the more obvious reasons of welfare and the total number of pigs weaned. (dsm.com)

Health of children may go downhill and progeny prospects are not much promising either. (indastro.com)

Phages were administered via drinking water at a total concentration of 107 PFU/mL four, three, and two days before necropsy. (bvsalud.org)

Students may also experience distractions and loss of concentration that could affect results. (indastro.com)
Dynamic progeny ratio based on measured results. (alphanuclear.com)

Concentrations of bupivacaine in plasma were determined by high-performance liquid chromatography. (vin.com)

One anomalous granite was categorized as hazardous having an activity concentration index higher than 6. (scirp.org)
The higher concentration of DON in feedstuffs had a negative influence on the antioxidant ability of piglet's plasma. (nel.edu)

PRISMs are area monitors used for providing workers in industrial environments with an indication of current radon and radon progeny levels. (alphanuclear.com)
The light's activation levels are user configurable, and provide up to five levels that can be triggered off of radon and/or radon progeny levels. (alphanuclear.com)
Maximal plasma concentration (C max ) of 0.08±0.06 µg/ml was observed (T max ) at 0.52±0.01 hours, but high plasma levels were evident at 6 and 12 hours (0.061 and 0.074 µg/ml, respectively). (vin.com)
High levels were also evident in five of eight ducks at 360 min (0.061±0.05 µg/ml) and in six of eight ducks at 720 min ( and 0.074±0.04 µg/ml) The plasma concentration vs. time distribution is shown in Fig 1. (vin.com)
Six and 12 hour samples represent high levels in plasma bupivacaine concentration. (vin.com)

The resulting REL for radon progeny is a cumulative total of 1 WLM per year and an average workshift concentration of one twelfth of 1 working level. (cdc.gov)
The plasma total (TC) and free (FC) L-carnitine concentrations markedly decreased with the clinical stages of HIV infection. (openbiochemistryjournal.com)
The total and free L-carnitine and its amino acid precursor concentrations mild increased in HIV-infected subjects after the introduction of HAART. (openbiochemistryjournal.com)

Built on the stable and reliable framework of the previous models and proven detector technology, the M601 takes advantage of advancements in system-on-chip (SOC) technology to provide faster response times for changing radon and radon progeny conditions. (alphanuclear.com)

Those who are weak at studies, lack concentration and suffer from blood pressure and sugar problem etc., should worship Mercury. (rudraksha-center.com)

The material selection of XENONnT was aimed to achieve a \(^{222}\) Rn activity concentration of 1 \(\upmu \) Bq/kg in the LXe target during standard operation [ 6 ]. (springer.com)
The activity concentrations of 226 Ra, 232 Th and 40 K were measured by high- resolution gamma spectrometry. (scirp.org)
The averages and ranges of their activity concentrations were 667 (305 - 1120), 320 (161 - 491) and 586 (282 - 893) Bq・kg − 1 , respectively. (scirp.org)
In Annex VIII of [6] , it is stated that the activity concentration index value of 1 can be used as a conservative screening tool for identifying materials that may cause the reference level to be exceeded. (scirp.org)
222 Rn progeny loss increased strongly at activity concentrations below 1 Bq m −3 . (copernicus.org)
v) ListShield and Felix01 phages showed the best result for Listeria and Salmonella biological control, respectively, (vi) concentration of phage and bacteria, time and food had significant effect in the biological control of Listeria, (vii) temperature and time had a significant effect on the antimicrobial activity of Salmonella phages. (bvsalud.org)

Designed to work in the harsh environments present in uranium mines and mills, alphaNUCLEAR PRISMs have been a staple for radon and radon progeny monitoring for decades. (alphanuclear.com)

Promote structural integrity and productivity of broiler breeders, improve egg and eggshell quality, and deliver good quality progeny to help boost your overall profitability. (novusint.com)

If so, then we should expect less altruism (a act that costs the donor and benefits the recipient with perhaps a return obligation in the unspecified future) and more cooperation (both creatures are donor and recipient simultaneously), more alliances, and greater investment in progeny (postdocs). (behavior.net)
Concentrations of IgA tended to be greater (P = 0.09) in samples of colostrum and milk obtained from P4 compared with P1 dams. (nebraska.edu)

Progeny loss increased steeply with length of the tubing, decreasing sampling efficiency to 66 % for 8.2 mm ID rolled-up tubing of 200 m length at a flow rate of ca. 1 m 3 h −1 . (copernicus.org)

A more pronounced enlargement in plasma PHT concentrations in comparison to CSF concen- trations with increasing always doses were observed ample to a cut upper run to the leader as a result of the autoinduction exerted by way of PHT. (daubnet.com)
Subcutaneous administration gave an AUC (0 to 180 min) of 0.14±0.08 µg/h/L with a maximal plasma concentration (C max ) of 0.08±0.06 µg/ml which was observed (T max ) at 31.6 ± 6.5 minutes. (vin.com)
Plasma concentration of bupivacaine (µg/ml) following subcutaneous injection of 2 mg/kg of a 0.5% solution in female mallard ducks. (vin.com)

In the rat liver homogenates, GH did not affect the iron-induced LPO, whereas IGF-I--in the lowest two concentrations--enhanced the process. (nel.edu)

Additionally, radon gas and attached and unattached fractions of radon progeny were measured at three primary cavern work locations during a 1-d period using a SARAD EQF 3220. (cdc.gov)

Where we have good flows of water, (selenium) concentrations are not an issue because of dilution," Kanzer said. (aspentimes.com)

date are been from progeny spectrum author(s such to chromosomal curve fragment. (scoutconnection.com)

Circulating IgG and IgA concentrations were quantified in all blood samples. (nebraska.edu)

Many years the sale of her progeny paid the herd's feed bill. (thistlehill.net)

Eight adult female mallard ducks, F2 progeny of wild strain adults, weighing 1060±10 g, were used for this study. (vin.com)

Constraints and possible physiological feedbacks are considered for successful and sustainable application of agricultural techniques with respect to management of plant phenol profiles and concentrations. (mdpi.com)

The average outdoor air concentration in occur in mining and milling industries, Absorbed radon and radon progeny are the U.S. is 0.4 pCi/L. (cdc.gov)
The average annual concentration of and Disease Registry uranium and hard rock. (cdc.gov)

Many laboratories report a calculated value termed the free T4 index, which is an estimate of the free T4 concentration, not a measurement. (medscape.com)

Granites, in particular, exhibit an enhanced elemental concentration of natural radionuclides in comparison to the very low abundance of these elements observed in the mantle and the crust of the Earth. (scirp.org)

Does elevated CO 2 concentration affect lamina length of rice cultivars? (cropscience.org.au)

The M597 PRISM is alphaNUCLEAR's popular and robust continuous radon and radon progeny level monitor that has been in use for over a decade. (alphanuclear.com)
Thresholds based on radon gas and working level concentrations. (alphanuclear.com)
0.0001 µg/ml) or GH (100 µg/ml)+IGF-I, or FeSO4+H2O2 plus GH and/or IGF-I. The level of LPO was expressed as concentrations of malondialdehyde+4-hydroxyalkenals (MDA+4-HDA) per mg of protein. (nel.edu)

Exposures3

Radon daughters2

Measurements4

Exposure8

Piglets1

Stem cells3

Viral2

Sows2

Populations1

Polymerase1

Radioactive1

Serum4

Susceptible1

Ambient3

Characterize1

Litter performance1

Parameters1

Parity2

Primarily2

Variation2

Soil1

Lung1

Yield1

Frequency3

Secondary1

Lifetime2

Health1

Drinking water1

Results2

Performance1

Higher2

Levels5

Total3

Provide1

Studies1

Activity6

Present1

Quality1

Greater2

Loss1

Plasma3

Lowest1

Work1

Good1

Date1

Blood1

Years1

Wild1

Respect1

Average2

Free1

Comparison1

Length1

Level3