Sentences with phrase «present at lower concentrations»

Reliable detection of analytes that are present at low concentrations is a critical need for early diagnosis and treatment of various diseases.

Breastfed babies need to start eating high quality solid foods around 6 months, ideally while continuing to breastfeed, because certain nutrients (including iron, zinc, and vitamin D) are present at low concentrations in breast milk.

Not exact matches

The technique is so accurate and sensitive that he can determine if there is a molecule of any chemical present even at concentrations as low as one part per billion.

An international team led by Ingrid Felger, from the Swiss Tropical and Public Health Institute in Basel, Switzerland, took advantage of genes that have multiple copies in the parasite genome to reveal parasites present at concentrations that are 10 times lower than the detection limit of current standard assays.

Importantly, the method works even for chemical elements present at very low concentrations, some of which are particularly useful for unveiling magma history with unprecedented detail.

Pooling samples provided sufficient protein mass for effective downstream proteomics analysis following immunoaffinity depletion of the 14 most abundant proteins present (representing approximately 95 % of the total protein mass in CSF), reducing the dynamic range of protein concentrations present in CSF, where proteins with highest concentrations mask proteins at lower concentrations from detection.

* Oddly enough, however, the experiments with fresh pancreatic islets and fat cells taken from the mice suggested that the positive effects of uncarboxylated osteocalcin on insulin only occurred at concentrations extremely low compared to those of undercarboxylated osteocalcin normally present in mice, while the effects on adiponectin and energy expenditure only occurred at normal to high concentrations.

is constant (are not included in the sum because they are present at such low concentration that they can be neglected).

Quantitatively, Vasskog et al. estimate that during this time (the prior interglacial) the GrIS was «probably between ~ 7 and 60 % smaller than at present,» and that that melting contributed to a rise in global sea level of «between 0.5 and 4.2 m.» Thus, in comparing the present interglacial to the past interglacial, atmospheric CO2 concentrations are currently 30 % higher, global temperatures are 1.5 - 2 °C cooler, GrIS volume is from 7 - 67 % larger, and global sea level is at least 0.5 - 4.2 m lower, none of which observations signal catastrophe for the present.

Taken together, the average of the warmest times during the middle Pliocene presents a view of the equilibrium state of a globally warmer world, in which atmospheric CO2 concentrations (estimated to be between 360 to 400 ppm) were likely higher than pre-industrial values (Raymo and Rau, 1992; Raymo et al., 1996), and in which geologic evidence and isotopes agree that sea level was at least 15 to 25 m above modern levels (Dowsett and Cronin, 1990; Shackleton et al., 1995), with correspondingly reduced ice sheets and lower continental aridity (Guo et al., 2004).