Debris Particles from the Second Chinese Nuclear Bomb Test

Nature ◽  
1966 ◽  
Vol 210 (5041) ◽  
pp. 1143-1144
Author(s):  
JAN SISEFSKY
Keyword(s):  
Nuclear Bomb ◽  
Debris Particles ◽  
Bomb Test

Debris Particles resulting from the Chinese Nuclear Bomb Test

Nature ◽  
1965 ◽  
Vol 206 (4989) ◽  
pp. 1140-1141 ◽  
Author(s):  
JAN SISEFSKY
Keyword(s):  
Nuclear Bomb ◽  
Debris Particles ◽  
Bomb Test

Research in the Effects and Influences of the Nuclear Bomb Test Explosions. Volumes I and II.

1960 ◽  
Vol 35 (1) ◽  
pp. 114-114
Author(s):  
Bentley Glass
Keyword(s):  
Nuclear Bomb ◽  
Bomb Test

scholarly journals Covid-19: Pandemonium in our time

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Robert Bergquist ◽  
Laura Rinaldi
Keyword(s):  
Shock Wave ◽  
Paradise Lost ◽  
Actual Data ◽  
Ground Zero ◽  
Nuclear Bomb ◽  
True Value ◽  
Epic Poem ◽  
Bomb Test ◽  
The World ◽  
The Trinity

While pandemonium has come to mean wild and noisy disorder, the reference here is to John Milton's epic poem Paradise Lost and the upheaval following Lucifer's banishment from Heaven and his construction of Pandæmonium as his hub. Today's avalanche of conflicting news on how to deal with the coronavirus disease 2019 (Covid-19) brings to mind the Trinity nuclear bomb test with Enrico Fermi estimating its strength by releasing small pieces of paper into the air and measuring their displacement by the shock wave. Fermi's result, in fact not far from the true value, emphasised his ability to make good approximations with few or no actual data. The current wave of Covid-19 presents just this kind of situation as it engulfs the world from ground zero in Wuhan, China. Much information is indeed missing, but datasets that might lead to useful ideas on how to handle this pandemic are steadily accumulating.

scholarly journals Bomb Produced 14C Content in Tree Rings Grown at Different Latitudes

Radiocarbon ◽  
1986 ◽  
Vol 28 (2A) ◽  
pp. 346-349 ◽  
Author(s):  
Kai-Mei Dai ◽  
C Y Fan
Keyword(s):  
Atmospheric Circulation ◽  
Tree Rings ◽  
Atmospheric Circulation Patterns ◽  
Nuclear Bomb ◽  
Circulation Patterns ◽  
Bomb Test ◽  
The 1950S

The 14C content in 1961–1967 rings of each of three spruce pines grown at (68° N, 130° W), (47° 30' N, 129° 16' E) and (27° 13' N, 100° 20' E) were measured. Δ14C values of the three specimens rise dramatically from a common level (∼250‰) in 1961 to their respective maxima, 964‰, 909‰, and 743‰ in 1964 and then fall to a common level ∼680‰ in 1967. The observed Δ14C increase comes most likely from the nuclear bomb test of the USSR at 75° N in 1961, although there were many other tests since the 1950s. The different effects at different latitudes reflect the atmospheric circulation patterns in the stratosphere and the transport of 14C nuclei from the stratosphere to the troposphere.

scholarly journals <sup>36</sup>Cl bomb peak: comparison of modeled and measured data

2009 ◽  
Vol 9 (1) ◽  
pp. 2501-2531
Author(s):  
U. Heikkilä ◽  
J. Beer ◽  
J. Feichter ◽  
V. Alfimov ◽  
H.-A. Synal ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
General Circulation ◽  
Model Simulation ◽  
Circulation Model ◽  
Ice Cores ◽  
Tien Shan ◽  
Nuclear Bomb ◽  
Bomb Test ◽  
36Cl Fluxes ◽  
High Precipitation

Abstract. The extensive nuclear bomb testing of the fifties and sixties and the final tests in the seventies caused a strong 36Cl peak that has been observed in ice cores world-wide. The measured 36Cl deposition fluxes in eight ice cores (Dye3, Fiescherhorn, Grenzgletscher, Guliya, Huascarán, North GRIP, Inylchek (Tien Shan) and Berkner Island) were compared with an ECHAM5-HAM general circulation model simulation (1952–1972). We find a good agreement between the measured and the modeled 36Cl fluxes assuming that the bomb test produced global 36Cl input was ~80 kg. The model simulation indicates that the fallout of the bomb test produced 36Cl is largest in the subtropics and mid-latitudes due to the strong stratosphere-troposphere exchange. In Greenland the 36Cl bomb signal is quite large due to the relatively high precipitation rate. In Antarctica the 36Cl bomb peak is small but is visible even in the driest areas. The model suggests that the large bomb tests in the Northern Hemisphere are visible around the globe but the later (end of sixties and early seventies) smaller tests in the Southern Hemisphere are much less visible in the Northern Hemisphere. The question of how rapidly and to what extent the bomb produced 36Cl is mixed between the hemispheres depends on the season of the bomb test. The model results give an estimate of the amplitude of the bomb peak around the globe.

The nature and extent of bomb tritium remaining in deep soils

2021 ◽  
Author(s):  
Jaivime Evaristo ◽  
Yanan Huang ◽  
Zhi Li ◽  
Kwok P. Chun ◽  
Edwin H. Sutanudjaja ◽  
...  
Keyword(s):  
Water Movement ◽  
Subsurface Water ◽  
Arid Environments ◽  
Nuclear Bomb ◽  
Bomb Test ◽  
The 1960S ◽  
Environmental Tritium ◽  
Test Ban ◽  
Deep Soils ◽  
Made In

&lt;p&gt;Understanding the movement of water in soils is important for estimating subsurface water reserves. Despite the advances made in understanding water movement, very few tools can directly &amp;#8216;follow the water&amp;#8217;. Tritium, a tracer that decays with time and resides within individual water molecules, is one such tool. Some tritium is produced naturally, others result from the nuclear bomb test era of the 1960s. Since the atmospheric nuclear tests ended following the Partial Nuclear Test Ban Treaty in 1963, however, the amount of tritium in soil water has declined, putting into question the usefulness of the environmental tritium method for tracking water movement in future studies. Our study explores&amp;#160;the usefulness of the tritium method. Our results highlight the narrow window of time, over the next 20 years depending on the model used, within which the tritium method may still be applicable. We call on scientists to now take full advantage of the environmental tritium method in places where the tool may still be applicable. A richer understanding of water movement in soils is ultimately critical for ecosystem services and water resources management, particularly in semi-arid environments with deep soils.&lt;/p&gt;

scholarly journals On the Radioactivity of Fishes Contaminatd by the Nuclear Bomb Test Explosions, with special Reference to the Nuclides

1957 ◽  
Vol 31 (8) ◽  
pp. A79-A86 ◽  
Author(s):  
Takajiro MORI ◽  
Masamichi SAIKI
Keyword(s):  
Special Reference ◽  
Nuclear Bomb ◽  
Bomb Test

scholarly journals The age of adult pilocytic astrocytoma cells

Oncogene ◽  
2021 ◽  
Vol 40 (16) ◽  
pp. 2830-2841
Author(s):  
Natalia Voronina ◽  
Christian Aichmüller ◽  
Thorsten Kolb ◽  
Andrey Korshunov ◽  
Marina Ryzhova ◽  
...  
Keyword(s):  
Genomic Dna ◽  
Nuclear Bomb ◽  
Astrocytoma Cells ◽  
Genome Wide ◽  
Pilocytic Astrocytomas ◽  
Bomb Test ◽  
Anatomic Locations ◽  
Methylation Patterns ◽  
And Control ◽  
Genome Wide Expression

AbstractAdult pilocytic astrocytomas (PAs) have been regarded as indistinguishable from pediatric PAs in terms of genome-wide expression and methylation patterns. It has been unclear whether adult PAs arise early in life and remain asymptomatic until adulthood, or whether they develop during adulthood. We sought to determine the age and origin of adult human PAs using two types of “marks” in the genomic DNA. First, we analyzed the DNA methylation patterns of adult and pediatric PAs to distinguish between PAs of different anatomic locations (n = 257 PA and control brain tissues). Second, we measured the concentration of nuclear bomb test-derived 14C in genomic DNA (n = 14 cases), which indicates the time point of the formation of human cell populations. Our data suggest that adult and pediatric PAs developing in the infratentorial brain are closely related and potentially develop from precursor cells early in life, whereas supratentorial PAs might show age and location-specific differences.

scholarly journals Accidental synthesis of a previously unknown quasicrystal in the first atomic bomb test

2021 ◽  
Vol 118 (22) ◽  
pp. e2101350118
Author(s):  
Luca Bindi ◽  
William Kolb ◽  
G. Nelson Eby ◽  
Paul D. Asimow ◽  
Terry C. Wallace ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Atomic Bomb ◽  
Icosahedral Quasicrystal ◽  
Glassy Material ◽  
Nuclear Bomb ◽  
Experimental Shock ◽  
Bomb Test ◽  
Distinctive Property ◽  
Unknown Composition ◽  
The Trinity

The first test explosion of a nuclear bomb, the Trinity test of 16 July 1945, resulted in the fusion of surrounding sand, the test tower, and copper transmission lines into a glassy material known as “trinitite.” Here, we report the discovery, in a sample of red trinitite, of a hitherto unknown composition of icosahedral quasicrystal, Si61Cu30Ca7Fe2. It represents the oldest extant anthropogenic quasicrystal currently known, with the distinctive property that its precise time of creation is indelibly etched in history. Like the naturally formed quasicrystals found in the Khatyrka meteorite and experimental shock syntheses of quasicrystals, the anthropogenic quasicrystals in red trinitite demonstrate that transient extreme pressure–temperature conditions are suitable for the synthesis of quasicrystals and for the discovery of new quasicrystal-forming systems.

What have we learned from North Korea's fifth claimed nuclear bomb test?

Nature ◽  
2016 ◽  
Author(s):  
Davide Castelvecchi
Keyword(s):  
Nuclear Bomb ◽  
Bomb Test
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