Sentences with phrase «as quaternary»

What is more, the last Ice Age, known as the Quaternary, is only about half over, despite our blistering Summers.

The viability of leucite for 40Ar39Ar dating and as a Quaternary standard.

These amino acids organize themselves into structures known as quaternary proteins.

If climate change gets catastrophic — and the world sees more than 6 degrees Celsius warming of average temperatures — the planet will have left the current geologic period, known as the Quaternary and a distant successor to the Ordovician, and have returned to temperatures last seen in the Paleogene period more than 30 million years ago.

Not exact matches

The March 12, 2015 issue of Nature magazine contains an essay — not an original thesis, rather a summation — by two English geographers entitled «Defining the Anthropocene,» the subject of which is whether (and starting when) human activity has so altered the global environment as to constitute a new geologic age: the Anthropocene Age, as successor to the 11,000 - year Holocene Epoch that is itself part of the larger 2.6 million year - old Quaternary Period (or Great Ice Age).

«Zika can survive on hard, non-porous surfaces for as long as eight hours, possibly longer when the environment contains blood, which is more likely to occur in the real world,» said the study's lead researcher S. Steve Zhou, Ph.D. «The good news is that we found that disinfectants such as isopropyl alcohol and quaternary ammonium / alcohol are generally effective in killing the virus in this type of environment and can do so in a little as 15 seconds.»

In Shandong province, China, an oleochemical firm using cow parts creates a wide variety of fatty acids, amines, and quaternary ammonium salts, which are used as asphalt emulsifiers, antistatic agents, wetting agents, corrosion inhibitors, and fabric softeners.

During the first two - thirds of the Quaternary, the ice advanced and retreated roughly every 41,000 years — the same tempo as the changes in the tilt of Earth's axis.

Reconstruction of late Quaternary climate changes as derived from a pollen record from Lahaul Himalaya, Himachal Pradesh, India Suman Rawat, A. K. Gupta, S. J. Sangode, N. R. Phadtare, H. C. Nainwal

Comparison of our Laschamp Excursion paleomagnetic records with other late Quaternary excursion records suggests that there is a group of excursions, which we term class I, which have strikingly similar patterns of field behavior and likely share a common cause as part of the overall core dynamo process.

On p. 336: 271 Abrupt change from wet to dry in the Sahara (at least, as measured by offshore dust) as the summer sun gradually changes: Peter B. deMenocal, J. Ortiz, T. Guilderson, J. Adkins, M. Sarnthein, L. Baker, and M. Yarusinsky, «Abrupt onset and termination of the African Humid Period: Rapid climate responses to gradual insolation forcing,» Quaternary Science Review 19: 347 - 361 (2000).

The study, recently published online in the scientific journal «Quaternary International,» determined that the distribution was limited by a number of climate - driven as well as climate - independent factors.

«The recent research findings show that during the last Ice Age, mammoths were the most widely distributed large mammals, thus rightfully serving as a flagship species of the glacial era,» according to Prof. Dr. Ralf - Dietrich Kahlke, an Ice Age researcher at the Senckenberg Research Station for Quaternary Paleontology in Weimar.

He all over up having to pay $ 7 a period unit, but as well two immense picks to big for him to labour 2014 quaternary - ammunition write hand tool by the prison term and threw some other one.

As a part of our cleaning procedures, we use products that contain a quaternary ammonium compound, which is used to eliminate and prevent the canine influenza virus.

The virus remains active unless it is exposed to ultraviolet radiation (sun light) or disinfectants, especially quaternary ammonium compounds, such as Roccal.

It is susceptible to disinfectants, especially the quaternary ammonium compounds such as Roccal (TM).

It will be inactivated by most commonly used disinfectants such as Accel ®, isopropyl alcohol, bleach, quaternary ammonium compounds, and potassium peroxymonosulfate (e.g. Trifectant ®).

This FDA announcement in June 2017 caused a huge voluntary recall because they were found to be using a quaternary ammonium compound mixture as a processing aid in the manufacturing of rawhide chews.

In a paper published online this week by the journal Quaternary International, 26 members of the working group point roughly to 1950 as the starting point, indicated by a variety of markers, including the global spread of carbon isotopes from nuclear weapon detonations starting in 1945 and the mass production and disposal of plastics.

Disclosure Note * Largely because of my early writing on humans as a geological force, I am a member of the working group on the Anthropocene established by the Subcommission on Quaternary Stratigraphy.

The orbital cycles are, as mentioned above, recognised to be of importance in the glacial - interglacial cycles of the Quaternary.

And for more than a decade, scientists have been arguing about whether what is officially known as the Holocene epoch of the Quaternary period of the Cenozoic era should be renamed to indicate human impact.

As reported at Science Daily, in a new paper in Quaternary Science Reviews they report their findings: that the present extent of sea ice in the arctic is at its lowest for at least several thousand years.

The see - sawing pattern in the Quaternary (2.58 million years) are better known as glacials and interglacials.

I then worked as a post-doc at Monash University looking at the Australian monsoon during the late Quaternary (from 700,000 years ago), which was a new and fascinating area of research for me.

The story really starts with my first piece on the Wegman report just over a year ago, which noted unmistakable copying of unattributed antecedent sources in background sections on tree ring proxies (taken from Bradley's text book Paleoclimatology: Reconstructing Climates of the Quaternary) and on social networks (identifying Wikipedia, as well as and Wasserman and Faust as obvious sources).

279 Abrupt change from wet to dry in the Sahara (at least, as measured by offshore dust) as the axial tilt gradually changes: Peter B. deMenocal, J. Ortiz, T. Guilderson, J. Adkins, M. Sarnthein, L. Baker, and M. Yarusinsky, «Abrupt onset and termination of the African Humid Period: Rapid climate responses to gradual insolation forcing,» Quaternary Science Review 19: 347 - 361 (2000).

The concomitant quaternary glaciations on mars suggest response to changes to an external forcing, such as solar obliquity or precession, the concomitant changes to the martian prescape as of earth, to say obliquity would be remarkable coincidence of chance.

On p. 336: 271 Abrupt change from wet to dry in the Sahara (at least, as measured by offshore dust) as the summer sun gradually changes: Peter B. deMenocal, J. Ortiz, T. Guilderson, J. Adkins, M. Sarnthein, L. Baker, and M. Yarusinsky, «Abrupt onset and termination of the African Humid Period: Rapid climate responses to gradual insolation forcing,» Quaternary Science Review 19: 347 - 361 (2000).

• Finally, MW repeats the WR's misspelling of Bradley's book as «Quarternary» in place of «Quaternary.»

DDAC — a colorless, odorless quaternary ammonium compound used as a disinfectant and tenside — was not approved as an ingredient for the plant - strengthening product, Vi - Care.

In research published in the June 1 issue of the Journal of Crystal Growth, Sarswat reports on how the microwave process avoids unwanted side reactions and efficiently achieves uniform crystals of CZTS, a quaternary chalcogenide also known as «p - type photovoltaic absorber».

Post Quaternary secondary lead mineral assemblages occur in a slate - grey metasediment matrix in areas where the bulk - weathered material is now absent: the mineralisation is typically found in small amounts of non-equilibrium assemblages - perhaps just what might be expected for a weathering lasting just ten thousand, as opposed to tens of millions, of years.

Anthropogenic warming has interrupted the Glacial - Interglacial cycle of the Quaternary (Ganopolski et al., 2016; Haqq - Misra, 2014) and there will be no coming Ice - Age n - 1000 years from now to reseal all of this volatile Carbon, as happened at the end of each previous interglacial.

Comparison of our Laschamp Excursion paleomagnetic records with other late Quaternary excursion records suggests that there is a group of excursions, which we term class I, which have strikingly similar patterns of field behavior and likely share a common cause as part of the overall core dynamo process.

Our emissions of GHGs are taking what likely operated as a feedback during the Quaternary cycles and making it a primary forcing of the Earth's radiative balance (or imbalance in this case).