| 单词 | nanogram |
| 例句 | Even botulism, the deadliest toxin ever known, needed at least 1 nanogram per kilogram to kill a human. The Last Cuentista 2021-10-12T00:00:00Z In a cubic meter of air, there may be only a nanogram of mercury, making it virtually impossible to detect via satellite. Human emissions increased mercury in the atmosphere sevenfold 2023-11-01T04:00:00Z Currently drinking water in the UK is categorised as medium-risk if there are between 10 and 100 nanograms of specific types of PFAS. Experts call for tighter limits on 'forever chemicals' in water 2023-10-17T04:00:00Z And two of 102 surface samples exceeded the Washington state Department of Health decontamination guideline of 15 nanograms per square centimeter. Drug smoke wafts through transit but not at toxic levels, UW study says 2023-09-07T04:00:00Z When fentanyl is used in a medical setting, the average blood concentration in an adult who receives a standard dose is 2.1 nanograms per milliliter, the charges say. Sammamish couple charged with manslaughter in toddler’s fentanyl death 2023-01-27T05:00:00Z That was more than nine times the 100 nanograms per milliliter limit that prosecutors use in court to prove impairment. Troopers faulted in truck-bicyclists crash case in Nevada 2021-11-14T05:00:00Z A second test found 3.2 nanograms per milliliter of THC, or tetrahydrocannabinol, in his blood, which they called a tiny amount. Trace of THC in Ahmaud Arbery's blood will not be disclosed to jury, U.S. judge rules 2021-11-04T04:00:00Z But crime scenes may only contain tens to hundreds of nanograms of DNA. Las Vegas murder case cracked with record-small amount of DNA 2021-07-23T04:00:00Z “The bottom line is those nanogram correlations don’t make any sense,” Sisley said. The doping rules that cost Sha’Carri Richardson have a debated, political history 2021-07-03T04:00:00Z A: Not long after the London Olympics in 2012, international regulators increased the threshold for a positive test from 15 nanograms per milliliter to 150 ng/m. EXPLAINER: Olympics are harder on marijuana than pro sports 2021-07-02T04:00:00Z Two decades ago, tests measured the presence of drugs in nanograms, or parts per billion. Better drug tests can stop cheaters. They also might punish innocent athletes. 2021-06-18T04:00:00Z There was just one problem: The sample contained only 0.3 nanograms, or 300 trillionths of a gram, of genetic material. To Solve 3 Cold Cases, This Small County Got a DNA Crash Course 2021-05-03T04:00:00Z And in this case, only 0.12 nanograms - or about 15 cells' worth - were available for testing. Las Vegas murder case cracked with record-small amount of DNA 2021-07-23T04:00:00Z That smaller amount was less than 250 nanograms, or 250 billionths of a gram — less than one one-hundred-millionth of an ounce. Einsteinium Is Mysterious. Scientists Have Unlocked Some of Its Secrets. 2021-02-07T05:00:00Z Parabon says it can now sequence enough SNPs to trace family history and build a face with less than 1 nanogram of DNA. The controversial company using DNA to sketch the faces of criminals 2020-09-08T04:00:00Z The honey’s lead concentration — an average of 2.3 nanograms per gram — fell within consumable standards, said Ms. Smith, a doctoral candidate in geological sciences and the lead author of the study. Paris Beehives Trace Notre-Dame’s Toxic Fallout 2020-07-29T04:00:00Z The petition states that Valisure detected levels greater than three million nanograms per tablet—far exceeding the FDA’s permissible daily intake of 96 nanograms. What We Know About the Possible Carcinogen Found in Zantac 2019-10-28T04:00:00Z He said the amount of scopolamine found in Justify — 300 nanograms per milliliter — was excessive, and suggested the drug was intended to enhance performance. Justify Failed a Drug Test Before Winning the Triple Crown 2019-09-11T04:00:00Z Illinois’ legal limit for THC in blood for drivers is 5 nanograms/ml. Excerpts from recent editorials in newspapers in Illinois 2019-06-25T04:00:00Z In 2015, an article in the American Journal of Medicine linked blood levels as low as 50 nanograms per milliliter with an increased risk of death. Vitamin D, the Sunshine Supplement, Has Shadowy Money Behind It 2018-08-18T04:00:00Z When we say you have too much of this hormone or a lack of another hormone, we are talking in terms of nanograms. How hormones went from theoretical to overhyped in one century 2018-08-07T04:00:00Z Insurance companies typically require two morning testosterone readings of less than 300 nanograms per deciliter plus symptoms of low testosterone before they reimburse for supplements. The Highs and Lows of Testosterone 2018-03-27T04:00:00Z Colorado law sets a 5 nanogram measure for DUI charges. Prosecutors say man used marijuana before crash killed 2 2018-01-23T05:00:00Z Under Montana law, someone with 5 nanograms per milliliter of THC in their system is considered to be driving under the influence. Billings man pleads guilty to vehicular homicide 2017-12-04T05:00:00Z That’s within the level considered healthy by the Endocrine Society, which defined vitamin D “sufficiency” as between 30 and 100 nanograms, Rosen said. Vitamin D, the Sunshine Supplement, Has Shadowy Money Behind It 2018-08-18T04:00:00Z EPA said a sample collected by an agency dive team from the exposed area showed dioxin levels at 70,000 nanograms per kilogram - more than 2,300 times the level set to trigger a cleanup. EPA says dioxins might have washed downriver during Harvey 2017-09-30T04:00:00Z The tour is following the lead of the International Olympic Committee, which in 2013 raised the limit to 150 nanograms, a threshold I consider much more reasonable. Undercover Tour Pro: A Pot Smoker Applauds The Tour's New Drug-Testing Program - Golf Digest 2017-09-26T04:00:00Z Some states, such as Colorado and Washington, have established 5 nanograms of THC per milliliter of blood as a clear legal standard for judging whether someone is driving under the influence. Does driving while high create more crashes? Report hints that it's possible 2017-06-22T04:00:00Z They needed only 40 nanograms and 1 nanogram per millilitre of solution respectively to keep the non-resistant bugs under control. A new antibiotic for drug-resistant tuberculosis 2017-06-22T04:00:00Z The ‘largest’ impurity the team found was copper—approximately 70 nanograms per gram of sample. Sphere Made To Redefine Kilogram Has Purest Silicon Ever Created 2017-06-22T04:00:00Z Labs performing these tests are reporting perfectly normal levels of vitamin D — 20 to 30 nanograms per milliliter of blood — as “insufficient.” Why Are So Many People Popping Vitamin D? 2017-04-10T04:00:00Z The threshold for failing a test was 15 nanograms but will now be 150 nanograms. Undercover Tour Pro: A Pot Smoker Applauds The Tour's New Drug-Testing Program - Golf Digest 2017-09-26T04:00:00Z "These are very low levels, these are nanograms per litre which means parts per trillion, a very low concentration," said Prof Gregory LeFevre, one of the authors from the University of Iowa. First study finds neonic pesticides in US drinking water - BBC News 2017-04-05T04:00:00Z One nanogram of DNA from each pool was digested and fragments of insert size ranging from 500 to 550 bp were selected. De novo assembly and phasing of a Korean human genome : Nature : Nature Research 2016-10-04T04:00:00Z The Oklahoma Medical Examiner's Office report said Crutcher had 96 nanograms per milliliter of phencyclidine, or PCP, in his bloodstream at the time of his death on Sept. 16. Unarmed black man killed by Tulsa police had PCP in his system: autopsy 2016-10-11T04:00:00Z Schools must stay below thresholds of between 100 and 600 nanograms per cubic meter, depending on the age of the students, according to the EPA. Activists warn that PCBs — toxic industrial chemicals — contaminate thousands of U.S. schools 2016-10-05T04:00:00Z Lawmakers initially proposed that the standard be 15 nanograms. Illinois governor working with police on marijuana bill 2016-07-23T04:00:00Z However, many experts, including the Endocrine Society, advocate for levels greater than 30 nanograms per milliliter. Vitamin D Deficiency and the Prevention of Heart Disease: to Treat or Not Treat? 2016-06-09T04:00:00Z Only 0.3 nanograms of acetamiprid was needed to kill 50 percent of the nonresistant bedbugs, but it took more than 10,000 nanograms to kill 50 percent of the bedbugs from Cincinnati and Michigan. Bedbugs Biting Back Against Insecticide 2016-01-28T05:00:00Z It took just 0.3 nanograms of neonics to kill more than half of the 30 year colony - but it took around 10,000 nanograms to kill the same percentage of the recently collected insects. Bed bugs develop resistance to widely used insecticides - BBC News 2016-01-28T05:00:00Z Motorists in those states are considered to be driving under the influence — jokingly referred to as “driving while baked” — if 5 or more nanograms of THC are found in their blood. New marijuana breath test device to detect levels of THC 2015-12-02T05:00:00Z Thirty percent were vitamin D deficient, which means their levels of the "sunshine vitamin" were below 20 nanograms per milliliter of blood. Vitamin D Deficiency Might Be Tied to Erectile Dysfunction 2015-11-13T05:00:00Z Ironically, at her last annual checkup, Michos – an avid outdoor runner – was shocked to learn that she, too, was vitamin D deficient with a blood level of only 15 nanograms per milliliter. Vitamin D Deficiency and the Prevention of Heart Disease: to Treat or Not Treat? 2016-06-09T04:00:00Z Having a vitamin D level anywhere above 15 nanograms per milliliter is fine for heart health, according to a team at the Intermountain Medical Center Heart Institute in Salt Lake City. Scientists Pinpoint What Level of Vitamin D Promotes Heart Health 2015-11-12T05:00:00Z Or after a certain nanogram, or whatever you call it. Nick Diaz's five-year ban for weed is master stroke of outdated thinking 2015-09-18T04:00:00Z A toxicological report released on Monday says Bland’s blood contained about 18 nanograms of THC, marijuana’s main psychoactive ingredient, per milliliter. Why Blame Marijuana For Sandra Bland's Death? 2015-07-30T04:00:00Z In Colorado, individuals are considered too impaired to drive if their blood contains 5 nanograms per milliliter. CDC warns of dangers of marijuana edibles 2015-07-26T04:00:00Z He adds that vitamin D levels above 50 nanograms per milliliter – in the high-normal range – have been shown to reduce the risk of recurrence of breast cancer in survivors. Dietary Supplements During Cancer Treatment: Yes or No? 2015-07-01T04:00:00Z The system is supposed to require only the tiniest quantities of biological samples—about 1 nanogram of DNA. 10X Genomics Unwraps Its 'Toaster Oven' for Better DNA Sequencing 2015-02-25T05:00:00Z As a rule of thumb, the lowest level of total testosterone considered normal in men is 250 to 300 nanograms per deciliter. Treating Low Testosterone: Weighing Risks and Benefits 2015-02-06T05:00:00Z Even if we assume the test results accurately reflect how much THC was in her system when she died, 18 nanograms per milliliter is not very high for a regular user. Why Blame Marijuana For Sandra Bland's Death? 2015-07-30T04:00:00Z Initiative 502 set 5 nanograms of active THC per milliliter of blood as the legal limit at which a driver is automatically determined to be impaired. Marijuana breath test under development at WSU 2014-11-29T05:00:00Z THC levels then dropped sharply, dipping below 20 nanograms after about 45 minutes but remaining above 10 after an hour. Did Marijuana Kill Michael Brown? 2014-11-27T05:00:00Z In a small person, say like 100 pounds, to get to 12 nanograms wouldn't take a lot. Michael Brown and the pot debate 2014-11-26T05:00:00Z Players will now have to be found with 35 nanograms of tetrahydrocannabinol per milliliter in their urine for a positive test, compared with the previous limit of 15 nanograms of THC per milliliter. N.F.L. and Union Agree on Drug Plan 2014-09-17T04:00:00Z Huestis says it’s difficult to set a standard limit, and with a low cap like 1 nanogram per milliliter, she says chronic users could be arrested if they have lingering THC in their system. Drugged Driving Perplexes Scientists, Lawmakers 2014-08-22T04:00:00Z According to the study authors, vitamin D levels of 20 to 30 nanograms per milliliter in their blood are considered sufficient or healthy, so the vitamin D-deficient women fell below that threshold. Women's Vitamin D Levels May Play Role in IVF Success 2014-08-14T04:00:00Z But according to Long, Brown’s blood contained 12 nanograms of active THC per milliliter, which he said would not be unusual for a recreational user who had smoked pot within the previous two hours. Did Marijuana Kill Michael Brown? 2014-11-27T05:00:00Z So for a concentration of 12 nanograms in a large person, that shows it was a large dose. Michael Brown and the pot debate 2014-11-26T05:00:00Z Critics of that rule wonder the same thing, especially since it’s clear that many regular cannabis consumers can drive safely at levels far above five nanograms. Hearing On Stoned Driving Shows Pot Prohibitionists' Scary Prophecies Have Little Basis 2014-08-07T04:00:00Z “Honestly, I believe that the cutoff should be 1 or maybe 2 nanograms per milliliter, because that is where you’re going to identify individuals who are impaired and driving in the occasional smokers,” she says. Drugged Driving Perplexes Scientists, Lawmakers 2014-08-22T04:00:00Z Some experts believe that deficiencies should be defined as a blood level of the vitamin that is under 30 nanograms per milliliter. Vitamin D Screening Not Backed by Expert Panel 2014-06-23T04:00:00Z To put that number in perspective, a 1992 study reported in the Journal of Analytical Toxicology found that subjects smoking a single joint had concentrations above 100 nanograms per milliliter immediately afterward. Did Marijuana Kill Michael Brown? 2014-11-27T05:00:00Z "By conflating dose with blood concentration, this exchange implies that 12 nanograms of THC per milliliter will make a large person crazier than a small person, which makes no sense," he writes. Michael Brown and the pot debate 2014-11-26T05:00:00Z But those exposed to much lower concentrations – 1.1 and 71.4 nanograms – showed even more effects: declines of 89 and 92 percent. Flame Retardant Chemicals Weaken Frogs Immune Systems 2014-05-13T16:15:00Z Now, an athlete's urine needs to show 150 nanograms of THC per milliliter to get a "positive" test result. Golf & Weed: Where There's Smoke 2014-05-05T04:00:00Z The studies indicated that a better limit would be just one nanogram per milliliter, she said. Driving Under the Influence, of Marijuana 2014-02-17T18:16:23Z Over half of those were over the state's new legal limit of 5 nanograms of THC per milliliter of blood. More drivers testing positive for pot: Washington State Patrol 2013-11-23T20:35:29Z But Finkelstein’s study found that muscle strength and size turn out to be unaffected until testosterone levels drop very low, below 200 nanograms. Estrogen may play role in ‘male menopause’ 2013-09-12T14:13:07Z Although doctors prescribe testosterone gels for men whose levels fall below 300 nanograms per deciliter, that cutoff point is arbitrary, and there is no clinical rationale for it, Dr. Finkelstein said. Middle-Aged Men, Too, Can Blame Estrogen for That Waistline 2013-09-11T21:01:12Z A nanogram is a billionth of a gram. Motoring: Redefining ‘Under the Influence’ 2013-06-07T20:50:07Z One nanogram is the average weight of a human cell. Device Sniffs Out Black Powder Explosives 2013-05-03T18:35:00Z Vitamin D was given in quantities sufficient to raise blood levels to 36 nanograms per milliliter, a level considered sufficient for good health. Vital Signs: Nutrition: Vitamin D Doesn’t Reduce Knee Pain 2013-01-14T20:07:04Z Fat accumulation, however, kicks in at higher testosterone levels: 300 to 350 nanograms of testosterone. Estrogen may play role in ‘male menopause’ 2013-09-12T14:13:07Z But Dr. Finkelstein’s study found that muscle strength and size turn out to be unaffected until testosterone levels drop very low, below 200 nanograms. Middle-Aged Men, Too, Can Blame Estrogen for That Waistline 2013-09-11T21:01:12Z Military personnel with readings between 17 and 23 nanograms were more than twice as likely to develop the disease. Well: Low Vitamin D Level Tied to Type 1 Diabetes 2012-11-26T19:03:21Z "I believe the total production so far since the 1950s is on the order of like 10 nanograms." Antimatter and Fusion Drives Could Power Future Spaceships 2012-09-13T15:45:00.407Z Typical testosterone levels for younger men range between 300 and 1,000 nanograms per deciliter, but once levels begin dropping there is little consensus on what makes a "normal number." Testosterone marketing frenzy draws skepticism 2012-09-09T18:46:04Z Although doctors often prescribe testosterone gels for men whose levels fall below 300 nanograms per deciliter, that cutoff point is arbitrary, and there is no clinical rationale for it, Finkelstein said. Estrogen may play role in ‘male menopause’ 2013-09-12T14:13:07Z Fat accumulation, however, kicks in at higher testosterone levels: at 300 to 350 nanograms of testosterone, estrogen levels sink low enough that middle-aged spread begins. Middle-Aged Men, Too, Can Blame Estrogen for That Waistline 2013-09-11T21:01:12Z There was no significant difference between those with readings of 24 to 40 nanograms and those with levels higher than 40. Well: Low Vitamin D Level Tied to Type 1 Diabetes 2012-11-26T19:03:21Z Among men with a P.S.A. value higher than 10 nanograms per milliliter of blood, surgery lowered a man's risk of dying by 33 percent compared to the observation group. Well: Questioning Surgery for Early Prostate Cancer 2012-07-18T21:59:41Z We test in nanograms, and one nanogram is a positive test. 30 Seconds: Former Jockey Donna Barton Brothers Analyzes Races on Horseback 2012-06-09T17:57:51Z Jay Shendure, a geneticist at the University of Washington in Seattle, and his colleagues isolated 5 nanograms of cell-free DNA from a maternal blood sample taken at 18.5 weeks of gestation. Fetal Genome Deduced from Parental DNA 2012-06-07T22:15:00.207Z Not so in New Mexico, where they can run with up to 50 nanograms of the drug, more than double the amount allowed in a higher class of competition called graded stakes races. Death and Disarray at America?s Racetracks 2012-03-24T19:30:47Z "Normal" testosterone levels for any age are over 300 nanograms per deciliter. The reality of 'low T' 2012-03-13T19:43:04Z It would be illegal to drive with more than 5 nanograms of THC, the active ingredient of cannabis, per milliliter of blood. Wash. governor wants DEA to reclassify marijuana 2011-12-01T02:03:11Z Researchers observed 2,016 healthy women ages 45 to 58 for 16 years, characterizing low vitamin D as levels less than 20 nanograms per milliliter. Vitamin D Deficiency Raises Risk of Heart Failure, Study Says 2011-11-15T19:49:31Z The same serving of beef from a steer treated with a growth hormone contains 1.9 nanograms. On Nutrition: Know your food 2011-09-14T15:30:05Z “When you look at the history of our medication violations — Flunixin — most are under 50 nanograms, 35 nanograms, something like that,” Dr. Scollay said. Death and Disarray at America?s Racetracks 2012-03-24T19:30:47Z But the healthy range is large and spans between 250 and 1,100 nanograms per deciliter, said Neil Goodman, chairman of the hormone and reproductive medicine committee for the American Association of Clinical Endocrinologists. The reality of 'low T' 2012-03-13T19:43:04Z But even with a normal reading, an increase of 0.35 nanograms per year is widely believed to be high enough to require a biopsy. Study Finds Needless Biopsies for Prostate Cancer 2011-02-27T21:22:37Z The organization now recommends higher blood levels of the vitamin than the institute suggested—30 nanograms per milliliter as opposed to 20—which would require supplements. Which Pills Work? Debate Erupts after Vitamin D Supplements Prove Unnecessary 2011-02-11T14:15:00.440Z The Institute of Medicine maintains that a level of 20 nanograms is adequate, but other experts say it should be higher to assure maximum calcium absorption and bone health. Personal Health: Long and Short of Calcium and Vitamin D 2011-01-24T20:13:05Z The report says at least 20 nanograms is adequate for bone health, while many labs instead list people as low if their blood levels are below 30 ng. Report: A bit more vitamin D is good, not too much 2010-11-30T15:01:00Z They were followed by articles and claims and books saying much higher levels — 40 to 50 nanograms or even higher — were needed. Report Questions Need for 2 Diet Supplements 2010-12-01T06:37:00Z A recent study showed that maximum bone density is achieved when the blood serum level of 25-hydroxyvitamin D reaches 40 nanograms per milliliter or more. Personal Health: What Do You Lack? Probably Vitamin D 2010-07-26T20:39:00Z According to Solvay's Web site, a man's level of testosterone is considered low when it goes below 300 nanograms per deciliter of blood. Do you have 'Low T?' Or is it just hype? 2010-06-08T16:16:00Z Scarily, it did not take much estrogen to affect the fish — just 5 or 6 nanograms, or billionths of a gram, per liter of lake water. Flushed Away: How Dangerous Are the Drugs in Our Water? 2010-04-02T18:30:00Z The scientific community continues to debate the optimum level of vitamin D. In general, people are considered to be deficient if they have blood levels below 15 or 20 nanograms per milliliter. 2010-02-01T21:42:00Z |
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