• see spelling differences) is caused by one or more volatilized chemical compounds that are generally found in low concentrations that humans and many animals can perceive via their sense of smell. (wikipedia.org)
  • Most odors consist of organic compounds, although some simple compounds not containing carbon, such as hydrogen sulfide and ammonia, are also odorants. (wikipedia.org)
  • Cyanobacteria and associated toxins and taste-and-odor compounds are of increasing environmental concern. (usgs.gov)
  • However, consistent guidelines for the development of studies assessing cyanobacterial toxins and taste-and-odor compounds presently are not available. (usgs.gov)
  • The odor threshold values (i.e., detection and recognition values) were determined for all compounds in the matrix apple juice. (nih.gov)
  • Eight tainted apple juice samples were analyzed for the presence of the 2 strains and the 15 off-flavor compounds. (nih.gov)
  • From that study Gallagher and colleagues produced a normative profile of VOCs, showing how the chemical concentrations of the 100 or so compounds varied with age in healthy subjects, and how they differed between the two skin sites. (medicalnewstoday.com)
  • VOC samples from both the skin cancer and the healthy group showed the same chemical compounds were present, but in different concentrations. (medicalnewstoday.com)
  • The high odor activity values calculated for methanethiol and dimethyl trisulfide suggested that these 2 compounds, in addition to di-methyl sulfide reported in a previous study, could be the most important contributors to the sulfurous note in UHT milk. (oregonstate.edu)
  • A number of "reduced sulfur compounds" were identified as the primary odor-causing chemicals. (huntingtonbeachca.gov)
  • The soil areas that contained higher concentrations of these compounds were then mapped to assist with planning the odor mitigation strategies that will be put into place during remediation. (huntingtonbeachca.gov)
  • In these datasets, the odor concentration and concentration levels of volatiles compounds are provided for gas samples collected through different stages of digestate composting. (mendeley.com)
  • These include analyses for chlorophyll, the taste and odor compounds geosmin (trans-1,10-Dimethyl-trans-9-decalol) and MIB (2-methylisoborneol), and cyanobacterial toxins. (ysi.com)
  • here I'll concentrate on chlorophyll and the taste and odor compounds. (ysi.com)
  • Most of the studied products showed low levels of aroma compounds, benzenoids apart, however in some samples, few compounds were present in high concentrations beyond the odor threshold, with the potential ability to modify the sensory profile of a wine. (ives-openscience.eu)
  • The objective of this project was to develop a set of characteristic reference odors from a swine barn in Iowa, and in the process identify compounds causing characteristic swine odor. (iastate.edu)
  • LA Testing provides laboratory services and sampling supplies to identify ethylene oxide and other potentially hazardous chemical compounds to protect workers and help companies comply with health and safety regulations. (latesting.com)
  • There are small amounts of highly odorous compounds present in headspace of these drugs, with very low odor detection thresholds, that are more likely responsible for contributing to the overall odor of these drugs. (iastate.edu)
  • Previous reports of the most abundant compounds in headspace can mislead researchers when dealing with whole odor of these drugs. (iastate.edu)
  • Surrogate scent formulations, therefore, must match the odor impact of key compounds and not just the chemical abundance of compounds. (iastate.edu)
  • The objective of this study was to compare odorous volatile organic compounds (VOCs) emitted from illicit drug samples of marijuana, cocaine, and heroin to surrogate smell formulations using simultaneous sensory (via human olfaction) and chemical analyses. (iastate.edu)
  • Use of solid phase microextraction (SPME) allowed VOCs in drug headspace to be extracted and pre-concentrated on site, and analyzed by multidimensional gas chromatography-mass spectrometry-olfactometry (MDGC-MS-O). Use of MDGC-MS-O allowed for further separation of odorous compounds and simultaneous detection by the human nose of the separate odor parts that make up the total aroma of these drugs. (iastate.edu)
  • The compounds most abundant in headspace were not the most odor impactful when ranked by odor activity values (OAVs) (defined as ratio of concentration to odor detection threshold, ODT). (iastate.edu)
  • More research is warranted to expand the database, and determine odor detection thresholds for compounds of interest. (iastate.edu)
  • The company claims that the formaldehyde emissions result in a concentration of about 0.04 parts per million (ppm) under standard test conditions, which is comparable to levels occurring naturally in outdoor air. (enn.com)
  • The proposed platform is very convenient for monitoring hard-toreach emission sources, such as the plant's deodorization chimney, which turned out to be responsible for the strongest odor emissions. (ibecbarcelona.eu)
  • Further research is warranted to determine how the control of PM emissions from swine housing could affect odor emissions. (iastate.edu)
  • Drug quantity, age and adulterants can affect VOC emissions and their odor impact. (iastate.edu)
  • All 3 agents were subsequently incorporated into edible treats that were fed 30 minutes after the dogs ate their daily rations, and the number, frequency, and odor characteristics of flatulence were measured for 5 hours, using a device that sampled rectal gases and monitored hydrogen sulfide concentrations. (avma.org)
  • Buildup of hydrogen sulfide concentrations in confined areas has been known to cause adverse health effects. (h2ocare.com)
  • Oxidation removes hydrogen sulfide concentrations exceeding 6 ppm. (h2ocare.com)
  • While "odor" and "smell" can refer to pleasant and unpleasant odors, the terms "scent", "aroma", and "fragrance" are usually reserved for pleasant-smelling odors and are frequently used in the food and cosmetic industry to describe floral scents or to refer to perfumes. (wikipedia.org)
  • Unpleasant odors can be a warning sign of potential risks to human health. (cdc.gov)
  • The samples were analyzed for their potential to emit the extremely unpleasant odors that the surrounding community experienced in May-June of 2019. (huntingtonbeachca.gov)
  • Compared with raw and pasteurized samples, UHT milk contained substantially higher concentrations of hydrogen sulfide, methanethiol, carbon disulfide, dimethyl trisulfide, and di-methyl sulfoxide. (oregonstate.edu)
  • Androstenone, found in higher concentrations in the urine and sweat of men than of women, is used by some mammals to convey social and sexual information, and the ability to perceive androstenone's scent may have far-reaching behavioral implications for humans. (medgadget.com)
  • Odors that a person is used to, such as their own body odor, are less noticeable than uncommon odors. (wikipedia.org)
  • In the largest study ever conducted of its kind, researchers at Rockefeller University presented nearly 400 participants with 66 odors at two different concentrations and asked them to rate the pleasantness and intensity of each odor. (medgadget.com)
  • These include carbon monoxide (CO), unburned hydrocarbons (UBHC), oxides of nitrogen (NO x ), odor, particulate matter (PM) etc. (sae.org)
  • All analyses were conducted on a Gas Chromatography-Mass Spectrometry (GC-MS)-Olfactometry system where the human nose is used as a detector simultaneously with chemical analysis via MS. The effects of sampling time, distance from a source, and the presence of particulate matter (PM) on the abundance of specific gases, odor intensity, and odor character were tested. (iastate.edu)
  • After continuous odor exposure, the sense of smell is fatigued, but recovers if the stimulus is removed for a time. (wikipedia.org)
  • The exposure concentrations were continuously controlled by a flame ionization detector (FID) sampled from four points in the chamber. (europa.eu)
  • Charcoal tube sampling equipment was used to measure the daily average exposure. (europa.eu)
  • Using a new method, individual exposure was measured by the alveolar concentration of n-decane. (europa.eu)
  • Because fungus particles are commonly derived from wholly microscopic sources, exposure hazards are assessed by directly sampling a suspect atmosphere in most circumstances. (medscape.com)
  • 3 A half-mask N95 respirator should NOT be selected if the exposure concentration exceeds the exposure limit by a factor of 10. (cdc.gov)
  • Duration of exposure to bad odors. (veoliawatertechnologies.com)
  • in a revision of the "Occupational Exposure Sampling Strategies Manual" (OESSM). (cdc.gov)
  • In two separate criteria documents, NIOSH has recommended that TDI exposure be limited to 0.005 ppm (0.036 mg/m3) as a TWA for up to a 10-hour workday during a 40-hour workweek, with a ceiling concentration of 0.02 ppm (0.14 mg/m3) for any 10-minute period [NIOSH 1973, 1978]. (cdc.gov)
  • Although phosphate production is a by-product of elemental phosphorus metabolism in humans, a normal phosphate concentration does not rule out an elemental phosphorus exposure. (cdc.gov)
  • Detection of elemental phosphorus in environmental samples, as determined by NIOSH, and an elevated phosphorus level in food, as determined by FDA, might also indicate that an exposure has occurred. (cdc.gov)
  • The perception of odors, or sense of smell, is mediated by the olfactory nerve. (wikipedia.org)
  • Odor sensation usually depends on the concentration (number of molecules) available to the olfactory receptors. (wikipedia.org)
  • Olfactory perception, and especially affective responses of odors, is highly flexible, but some mechanisms involved in this flexibility remain to be elucidated. (frontiersin.org)
  • Olfactory perception is known to be highly flexible and is related to the age, gender, cultural background of the perceiver, the environment in which the odor is perceived or the characteristics of the odorant itself like its chemical composition or its concentration. (frontiersin.org)
  • This report highlights the importance of an individual chemical's odor impact in the olfactory identification of marijuana, cocaine, and heroin. (iastate.edu)
  • Bacteria in groundwater are responsible for most of the sulfide smells detected while sampling water wells. (h2ocare.com)
  • If your water smells like fuel or has a chemical odor, contact your local, state, or tribal health department to request a chemical analysis of your water before using it. (cdc.gov)
  • If your water smells like fuel or has a chemical odor, contact your local, state, or tribal health department for specific advice. (cdc.gov)
  • Odor activity values can be calculated from published odor detection thresholds. (iastate.edu)
  • This does not correspond to the concentration or intensity of any single constituent. (wikipedia.org)
  • The habits of fragrance usage also significantly influenced some of the odors' subjective intensity and emotional perception ratings. (frontiersin.org)
  • Seven PNA's (naphthalene, fluorene, phenanthrene, pyrene, chrysene, benzo[b]fluoranthrene, benzo[a]pyrene) were detected at trace concentrations (1 to 34 ppm) in bulk samples of the WCO. (cdc.gov)
  • Gaseous hydrogen chloride occurs in trace concentrations in the atmosphere. (chemicalbook.com)
  • 2. Odor Assessment - Ascon's remediation consultants collected soil and soil vapor samples from points all around the site that represent the material that is to be excavated and moved as part of the final remediation work. (huntingtonbeachca.gov)
  • Available data do not indicate a concentration at which TDI vapor fails to produce adverse reactions in sensitized persons. (cdc.gov)
  • NIOSH further recognized the carcinogenic potential of TDI and its isomers and recommended that exposures be reduced to the lowest feasible concentrations [NIOSH 1989]. (cdc.gov)
  • The groundwater had a visible fuel sheen and odor. (yritwc.org)
  • While challenging drilling conditions precluded previous consultants from attempting groundwater remediation, SCS industry experts safely achieved up to a 99 percent concentration reduction within the groundwater plume. (scsengineers.com)
  • Consumption of the 3 agents was associated with a significant decrease (86%) in the percentage of flatulence episodes with bad or unbearable odor and a proportional increase in the percentage of episodes of no or only slightly noticeable odor. (avma.org)
  • The abundance of specific gases and odor was amplified when plates collected PM. The results of this research indicate that PM is major carrier of odor and several key swine odorants. (iastate.edu)
  • Certain types of cyanobacteria (blue-green algae) in the catfish ponds produce a musty odor compound which accumulates in the catfish flesh and causes musty off-flavor. (usda.gov)
  • One approved algicide is diuron for the specific management of the type of cyanobacteria that produces the musty odor compound. (usda.gov)
  • In this study, three commercial ponds previously determined to contain musty off-flavor catfish were monitored over approximately 2 months to determine the impact and pattern of weekly diuron applications on the abundance of the musty odor-producing cyanobacteria, green algae, concentrations of the musty odor compound in the pond water, and flavor characteristics of the sampled catfish collected during the treatment period. (usda.gov)
  • After several diuron applications to each pond, the abundance of the musty odor-producing cyanobacteria and concentrations of the musty compound in pond water decreased dramatically. (usda.gov)
  • This study demonstrated that diuron applied via label-specified treatment protocols provide catfish farmers with a practical and cost-effective management approach for the musty odor-producing cyanobacteria and subsequent musty-related off-flavor. (usda.gov)
  • In addition to the above, there are many other types of systems to remove bad tastes & odors (other than a rotten egg smell in water), sediment and many other objectionable minerals and contaminants in the water - see link at https://h2ocare.com/bad-odor-taste Starting with a water test will dictate the right approach. (h2ocare.com)
  • In addition to the above systems described, there are many other types of systems to remove bad tastes & odors, sediment and many other objectionable minerals and contaminants in the water. (h2ocare.com)
  • SNC Lavalin experts continue to collect water samples, sediment samples, and fish and wildlife from the impacted water courses. (castlegarsource.com)
  • Please DO NOT send completed odor diaries to ATSDR for review. (cdc.gov)
  • Members of a citizens' group requested that ATSDR investigate in response to complaints from residents about odors and health problems. (cdc.gov)
  • The locations include areas where ATSDR suspects very low concentrations of hydrogen sulfide. (cdc.gov)
  • In samples with distinct off-flavor, 2-isopropyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 2-methylisoborneol, 1-octen-3-ol, fenchyl alcohol, geosmin, and guaiacol as well as 2,6-dibromophenol were determined in concentrations higher than the detection threshold. (nih.gov)
  • Objective -To determine whether feeding activated charcoal, Yucca schidigera , and zinc acetate would ameliorate the frequency and odor characteristics of flatulence in dogs. (avma.org)
  • Wastewater treatment plants (WWTPs) are sources of greenhouse gases, hazardous air pollutants and offensive odors. (ibecbarcelona.eu)
  • This is because odor-causing gases are often present at very low concentrations in a complex matrix of less important or irrelevant gases. (iastate.edu)
  • These were Stingers test, the odor threshold test, and the eye irritation threshold test. (europa.eu)
  • 2. Odor threshold to n-butanol was measured by a triangle olfactometer and was done during the pre-examination. (europa.eu)
  • The lowest correctly identified concentration was used as an indication of threshold concentration and was done during pre-examination. (europa.eu)
  • Odor threshold values for fenchyl alcohol are reported here for the first time. (nih.gov)
  • Terpenes for example ranged from 0.04 µg/L to 19.1 µg/L, with three samples above 15 µg/L. In one case, a sample was found to have a concentration of a cyclic terpene (1,8-cineole) above the odor threshold. (ives-openscience.eu)
  • Fair concentrations, although below the odor threshold were found for cis- and trans-linaloloxide. (ives-openscience.eu)
  • In this case, vanillin showed high levels, above the odor threshold in several samples. (ives-openscience.eu)
  • Sample containers should always be obtained from the testing laboratory or local health department,because containers may be especially prepared for a specific contaminant. (missouri.edu)
  • When scientists at Duke University identified OR7D4 as a receptor that androstenone selectively activates, Leslie Vosshall, Chemers Family Associate Professor and head of the Laboratory of Neurogenetics and Behavior at Rockefeller University and Andreas Keller, a postdoc in her lab, formed a collaboration with them, and began collecting blood samples from each participant and isolated their DNA. (medgadget.com)
  • The trooper then served a search warrant on Frankt for a sample of his blood, which was drawn at approximately 2:52 p.m. and then sent to the Bureau of Criminal Apprehension laboratory for analysis. (austindailyherald.com)
  • Sample Guy is a representation: he includes the person who expertly collects the samples in the field, the one who properly preserves, packages, and delivers samples to a laboratory, the bench scientist that performs sample preparation, and at last the analyses using any number of laboratory instruments and validated (or not) methods. (ysi.com)
  • Yet Sample Guy persists due to validated, broadly accepted methods that cover everything from the types of sample bottles to the validation of the proficiency of laboratory analysts. (ysi.com)
  • When Gram stain is used, determining the relative concentration of the bacterial morphotypes characteristic of the altered flora of BV is an acceptable laboratory method for diagnosing BV. (cdc.gov)
  • We offer laboratory testing services, sampling supplies and even personal protective equipment. (latesting.com)
  • A clinically compatible case in which laboratory tests on environmental samples are confirmatory. (cdc.gov)
  • After 2 months of training with COVID-19 odor samples in the laboratory, the dogs achieved a sensitivity and specificity of more than 95% for detecting the virus. (medscape.com)
  • Two additional point mutations in some of the participants influenced their sensitivity to androstenone, one of which may make humans hypersensitive to this odor. (medgadget.com)
  • Its odor is undetectable to humans until the concentration exceeds hazardous levels. (latesting.com)
  • The human sense of smell is comparable with many animals, able to distinguish between a diverse range of odors. (wikipedia.org)
  • Water samples for bacteria tests must always be collected in a sterile container. (missouri.edu)
  • Bacterial Vaginosis BV is a clinical syndrome resulting from replacement of the normal H2O2-producing Lactobacillus spp in the vagina with high concentrations of anaerobic bacteria (e.g. (cdc.gov)
  • The influences of people's characteristics including gender, hometown region, and fragrance usage habit on odor perception were further discussed. (frontiersin.org)
  • In terms of people's characteristics, participants from the southern Yangtze river gave a higher familiarity rating to almost all of these odors. (frontiersin.org)
  • These results suggested that users' cultural characteristics could be considered to be important factors that affect the essential oil's odor perception in aromatherapy. (frontiersin.org)
  • Environmental sampling was taken for carbon-monoxide (630080), toluene (108883), trichloroethylene (79016) (TCE) and ethyl-acetate (141786). (cdc.gov)
  • Odors from environmental sources might also cause health symptoms, depending on individual and environmental factors. (cdc.gov)
  • ATSDR's Get Involved to Reduce Environmental Odors in Your Community Presentation Cdc-pdf [PDF - 967 KB] contains some helpful information about odor diaries, such as how they can help health departments develop health messages about environmental odors. (cdc.gov)
  • The presentation also provides information about common sources of environmental odors and symptoms caused by odors. (cdc.gov)
  • Local environmental and health agencies can assess a community's response to odors using residents' odor diaries. (cdc.gov)
  • In addition, odor control software can track environmental events, such as wind direction, to provide proactive odor management. (veoliawatertechnologies.com)
  • Environmental sampling and monitoring services assess the full impact of contamination. (sgs.com)
  • Odorous substances to mask the odors from the air pollutant under investigation were not used. (europa.eu)
  • To reduce the odor nuisance of the Carré de Réunion wastewater treatment plant and to better preserve the living environment of local residents of a classified historic area, near the Versailles castle, our teams installed two types of deodorization systems. (veoliawatertechnologies.com)
  • At the same concentration, either fat or protein produced higher deodorization, depending on the hydrophobicity of the volatile. (bvsalud.org)
  • An odor is also called a "smell" or a "scent", which can refer to either a pleasant or an unpleasant odor. (wikipedia.org)
  • What kind of odor did you smell? (cdc.gov)
  • Then they pumped 1 to 4 milk samples at the time they perceived the smell of eucalyptus on their breath which had been previously shown to be approximately concurrent. (drugs.com)
  • Hydrogen sulfide has a pungent smell at low concentrations and most people can detect concentrations above 0.03 ppm. (h2ocare.com)
  • Odor management makes wastewater treatment plants more acceptable places for staff to work in and more pleasant for those who live close by. (veoliawatertechnologies.com)
  • The ability to identify odor varies among people and decreases with age. (wikipedia.org)
  • Community members have reported that smelling odors in the air decreases their quality of life and sense of wellbeing. (cdc.gov)
  • According to its abstract, the patent protects a detection method and a method of manufacturing a detection kit, both characterized by use of an organic sulfur reagent, and which are effective at low concentration of the reagent, are inexpensive, and have reduced unpleasant odor. (genomeweb.com)
  • Garlic contains sulfur volatiles that cause a bad odor after consumption. (bvsalud.org)
  • Fat, protein and water significantly reduced the concentration of sulfur-based volatiles in garlic. (bvsalud.org)
  • Subjects in the exposed nostics) and included the following main surizing and cooling [3], and for safety and unexposed groups were matched by parameters and indices: white blood cell purposes contains a sulfur-based odor- sex, age and governorate. (who.int)
  • A 1 g marijuana surrogate lacked in odor active acids, aldehydes, ethers, hydrocarbons, N-containing, and S-containing VOCs and was overabundant in odor active alcohols and aromatics compared with real marijuana. (iastate.edu)
  • Although it has long been suspected that the ability to perceive the odor of androstenone is genetically determined, this study was the first to identify variations in a single gene that account for a large part of why people perceive androstenone's scent so differently. (medgadget.com)
  • We hypothesized that scent-trained dogs can discriminate between breast cancer patients and non-breast cancer patients using urine samples. (researchsquare.com)
  • While odor feelings are personal perceptions, individual reactions are usually related. (wikipedia.org)
  • This study investigated the odor perceptions of several essential oils used in aromatherapy with emotion regulation functions among college students. (frontiersin.org)
  • However, there were no significant gender differences in most of the odor perceptions. (frontiersin.org)
  • Meanwhile, due to individual differences, people have different perceptions of odors, which may influence the potential effects of those functional odors. (frontiersin.org)
  • Several studies have demonstrated that dog can sniff and detect cancer in the breath or urine sample of a patient. (researchsquare.com)
  • The aim of this study is to assess whether the trained dog can detect breast cancer from urine samples. (researchsquare.com)
  • A nine-year-old female Labrador Retriever was trained to identify cancer from urine samples of breast cancer patients. (researchsquare.com)
  • Urine samples from patients histologically diagnosed with primary breast cancer, those with non-breast malignant diseases, and healthy volunteers were obtained, and a double-blind test was performed. (researchsquare.com)
  • 40 patients with breast cancer, 142 patients with non-breast malignant diseases, and 18 healthy volunteers were enrolled, and their urine samples were collected. (researchsquare.com)
  • In 40 times out of 40 runs of a double-blind test, the trained dog could correctly identify urine samples of breast cancer patients. (researchsquare.com)
  • The trained dog in this study could accurately detect breast cancer from urine samples of breast cancer patients. (researchsquare.com)
  • These results indicate the feasibility of a method to detect breast cancer from urine samples using dog sniffing in the diagnosis of breast cancer. (researchsquare.com)
  • However, the canine cancer detection testing for breast cancer using human urine samples has not yet been attempted. (researchsquare.com)
  • The aim of this study was to investigate the efficacy of a canine cancer detection method using urine samples of patients diagnosed with breast cancer. (researchsquare.com)
  • Patients who received a surgical operation before urine sample collection, and those with other types of cancer were excluded. (researchsquare.com)
  • Proper collection and handling of a water sample is important for a meaningful water test. (missouri.edu)
  • Sampling and handling procedures depend on the water quality concern and should be followed carefully. (missouri.edu)
  • If the water is being treated, it may be necessary to sample both before and after the water goes through the treatment equipment. (missouri.edu)
  • Veolia Water Technologies helps industrial and municipal clients to treat and suppress odors emitted by water treatment plants. (veoliawatertechnologies.com)
  • The main sources of bad odors linked to water treatment come from sludge storage and dehydration. (veoliawatertechnologies.com)
  • We have been committed to water treatment for more than a century, and have acquired a solid knowledge base concerning the issues arising from odor pollution. (veoliawatertechnologies.com)
  • Six water samples were collected from three sites on the Chattahoochee River each season. (sciencebase.gov)
  • Stable Emulsions were prepared with 5%, 10%, 15%, 20% and 25 % (v/v) water concentration with variable agitation speed ranging from 5000-15000 rpm along with two surfactants. (sae.org)
  • Exhaustive experiments were conducted on a single cylinder, water cooled, variable compression ratio (VCR) diesel engine with all test fuel samples and the results obtained were compared with neat diesel operation for respective compression ratios. (sae.org)
  • A reduction in NO x is observed by increasing the water concentration in the test fuels at all loads due to reduction in adiabatic flame temperature inside engine cylinder. (sae.org)
  • In a world where huge data sets can be generated by water quality sondes , autonomous vehicles, satellites, and machine learning, Sample Guy still drives the vast majority of water quality analyses. (ysi.com)
  • My recommendation for your 2022 New Year's Resolution is to evaluate your overall water quality monitoring program and identify where it might be strengthened by Sample Guy. (ysi.com)
  • Sample Guy gets a lot of flak: he can be slow, he must be meticulous about sample handling, he can only get a few discrete data points at a time and, compared with continuous water quality monitoring, he's a lot of dollars per data point. (ysi.com)
  • Catching a bloom in its early stages can save precious time and money when it comes to sample collection, and ultimately water treatment (both in-source and in the plant). (ysi.com)
  • Usually it is not a health risk at concentrations present in household water. (h2ocare.com)
  • If you experience a hydrogen sulfide odor suddenly, consult with a water filtration system professional. (h2ocare.com)
  • Water heater modification is necessary when hydrogen sulfide is causing an odor within the water heating system. (h2ocare.com)
  • Each water sample is tested for this Set of parameters: pH, Copper, Zinc and Iron+2 (4 tests per set). (sciencefaircenter.com)
  • These Copper test strips are suitable for testing drinking water and other water based samples for soluble copper ion. (sciencefaircenter.com)
  • Use a water sample of at least 60 ml or 2 oz. (sciencefaircenter.com)
  • It can also add a metalic taste and odor to drinking water. (sciencefaircenter.com)
  • They found that the types of VOCs did not vary with age, but their relative concentrations did. (medicalnewstoday.com)
  • For this latest research, they sampled air above basal cell tumors on the upper back and forearms of 11 people with skin cancer and found a different profile of VOCs compared to those taken from similar sites in another 11 healthy controls. (medicalnewstoday.com)
  • Because of this, an objective and analytical measure of odor is impossible. (wikipedia.org)
  • Livestock odor characterization is one of the most challenging analytical tasks. (iastate.edu)
  • Data were collected by a questionnaire interview, and haematological and biochemical analyses of venous blood samples were made from 30 workers at filling and distribution stations and 30 apparently healthy controls. (who.int)
  • Our objective was to assess the prevalence of in vitro aerobic metronidazole and tinidazole resistance among a broad sample of T. vaginalis isolates from multiple geographic sites in the United States. (cdc.gov)
  • The objective of this study was to further characterize subcutaneous (SC) administration of testosterone as an effective and safe alternative to IM injections by evaluating the pharmacodynamics of serum total and free testosterone concentrations between weekly testosterone injections. (medscape.com)
  • On April 9, the trooper received Frank's toxicology results, which revealed an ethyl alcohol concentration of 0.104 grams per 100 milliliters of blood (blood alcohol concentration of 0.104 percent). (austindailyherald.com)
  • Preliminary data show thrips can be controlled at very low ethyl formate concentrations without loss of orchid quality. (usda.gov)
  • None of these chemicals were found in concentrations exceeding recommended standards. (cdc.gov)
  • With this large dataset, we are able to say that people who express different variants of this receptor perceive this odor differently," says Vosshall. (medgadget.com)
  • As a group, participants with the RT/RT genotype perceive androstenone's odor as foul and intense. (medgadget.com)
  • Raw and fried garlic samples were mixed with various treatments and measurements of volatiles were conducted using a selected-ion flow-tube mass spectrometer. (bvsalud.org)
  • While the commercialization of anti-odor processes for the industry has been slow to emerge, prefectural decrees now define the tolerated levels of odors emitted by industry . (veoliawatertechnologies.com)
  • There were negative results in samples for TCE, formaldehyde (50000) and lead (7439921). (cdc.gov)
  • To compare with sampling results to see if responses match. (cdc.gov)
  • Did odor diary results and sampling results both find high concentrations of the odor in the air? (cdc.gov)
  • The results indicated that chemical type, but not concentration, significantly influenced the odor perception and there was no interaction between the two factors in this study. (frontiersin.org)
  • The cost per sample is $ 10.00 (cash or check) and the results are either emailed or mailed. (uga.edu)
  • RESULTS: The overall cutoff concentration for the classification of cigarette smokers from nonsmokers was 7.32ng/mL with high sensitivity and specificity (0.925). (cdc.gov)
  • Chemical analysis of the positive odor tests found 1,8-cineole in concentrations from 70 to about 2090 mcg/kg of milk, most in the range of 100 to 500 mcg/kg of milk. (drugs.com)
  • However, aromachology research has found that odor subjective perception was relevant to the possible impact of odor ( Herz, 2009 ). (frontiersin.org)
  • At the 28th and 31st day, blood samples were taken and analyzed for immune responses. (researchgate.net)
  • Three odor panelists were consistent in identifying p-cresol as closely resembling characteristic swine odor as well as attributing the largest odor response out of the samples to p-cresol. (iastate.edu)
  • The receiver operating characteristic (ROC) curve analysis was performed to identify optimal cutoff concentrations by maximizing Youden's J index. (cdc.gov)
  • The SPME performance of as-fabricated fiber was investigated for the concentration and determination of polycyclic aromatic hydrocarbons, phthalates and ultraviolet (UV) filters coupled to high performance liquid chromatography with UV detection (HPLC-UV). (who.int)
  • However, hydrogen sulfide gas is flammable and poisonous at high concentrations . (h2ocare.com)
  • These are not often associated with high enough concentrations to be a health issue. (h2ocare.com)
  • Transdermal testosterone formulations (patches, gels) can also have limitations, such as local reactions, poor adhesion, fear of skin-to-skin transmission, unpleasant odor, lack of insurance coverage or high copays, and limited patient acceptance. (medscape.com)
  • [ 14 ] That study used fixed doses from an auto-injector and allowed pretreatment serum concentrations as high as 300 ng/dL in hypogonadal men thus providing a confounding factor of significant endogenous testosterone secretion to data interpretation. (medscape.com)
  • The formulated DLH EOP systems with improved concentration- independent behavior helped to address the challenges of IR formulation. (bvsalud.org)
  • Of 538 T. vaginalis isolates, 23 (4.3%) exhibited low-level in vitro metronidazole resistance (minimum lethal concentrations 50-100 µg/mL). (cdc.gov)
  • Because the formaldehyde is tightly bound in SkyBlend's PF formulation, the product samples EBN examined were nearly odor-free. (enn.com)
  • Technologies that physically, chemically or biologically suppress odor from treatment plants. (veoliawatertechnologies.com)
  • Eight dogs were trained to detect samples that were positive for chemically inactivated SARS-CoV-2 RT-qPCR. (medscape.com)
  • According to its abstract, the patent protects an apparatus and method for concentrating and measuring low levels of cells in biological samples. (genomeweb.com)
  • therefore, the investigator does not have to handle the sample once it is placed in the sample reservoir, the abstract states. (genomeweb.com)
  • Providing information regarding the pharmacokinetics of testosterone ester injections will further characterize its efficacy and reliability, as well as provide information regarding appropriate timing of serum sampling to monitor therapy. (medscape.com)
  • Milk samples were collected every 2 hours for 8 hours starting at the time of ingestion. (drugs.com)
  • The purpose of the air monitoring is to characterize indoor and outdoor concentrations of hydrogen sulfide over time in various neighborhoods. (cdc.gov)
  • Sample Guy crouches over there on the right bank, perhaps looking longingly at that EMM68 data buoy that is transmitting hundreds of data points in the time it takes him to drive out there, trudge through the mud and mosquitoes with his bottles, and get his stuff back to the lab. (ysi.com)
  • ▶ May be delegated ▶ Cough effectively ▶ Mucus from bronchus ▶ Not Saliva ▶ Record ◦ Color ◦ Consistency ◦ Amount ◦ Odor ◦ Document date & time sent to lab. (slideshare.net)
  • The participants' infection status was not known at the time the samples were taken. (medscape.com)
  • The average peak anenthol concentration in milk was 23.2 mcg/L. Only small amounts of anenthol glucuronide metabolites were present in the milk samples. (drugs.com)
  • A total of 21 milk samples were obtained. (drugs.com)
  • Raw, pasteurized, and UHT milk samples with various fat contents were analyzed. (oregonstate.edu)