Physics of Biology

1402 Submissions

[3] viXra:1402.0172 [pdf] submitted on 2014-02-27 11:34:36

Biological Processes Within Atmospheric Aerosols

Authors: Colin Bruce Jack
Comments: 10 Pages.

A surprisingly high fraction of sunlight is absorbed during transit of the Earth’s lower atmosphere. One third to one half of this absorption may be unexplained, referred to as the ‘atmospheric absorption anomaly’ or ‘cloud absorption paradox’. This quantity is comparable to the total amount of sunlight falling on known photosynthesising organisms.
This paper sets out the hypothesis that the anomalous absorption is a consequence of biological activity within atmospheric aerosol droplets. Bacterial spores and the recently discovered vesicles emitted in huge numbers by marine bacteria are possible candidates for growth and maybe even reproduction within such droplets. Ways in which, within a droplet, a microorganism can harvest energy while avoiding any significant UV dose are described.
While at present hypothetical, the processes described could resolve several current anomalies, including a major puzzle concerning the origin of life. Practical implications could be relevant to anthropogenic global warming, attempted geoengineering, and photosynthetic energy harvesting. The hypothesis could be tested at low cost.
Category: Physics of Biology

[2] viXra:1402.0074 [pdf] replaced on 2014-02-22 06:59:22

Cyclic Thermal Energy Harvesting By Organisms

Authors: Colin Bruce Jack
Comments: 11 Pages.

In principle, many animals could obtain significant metabolic energy direct from their environment, additional to that from food.
Photosynthesis requires a large area of modified skin and imposes behavioural constraints: few animals are photosynthetic.
An alternative is to use the Carnot cycle, exploiting temperature differences. The maximum efficiency with which work can be extracted is ~ΔT/T, where terrestrially T~300 K: comparable to photosynthesis. For a cold blooded animal which moves frequently between environments at significantly different temperatures, this energy harvest could be substantial: its entire body can act as a thermal reservoir. The energy harvesting machinery might however be hard to spot, much as ‘brown fat’ in human adults was overlooked until recently. It could be based on any temperature-sensitive chemical equilibrium.
In the temperate and tropical oceans, animals could gain Carnot cycle energy very easily as they swim up and down through the thermocline during diel vertical migration. In so doing, they would transfer significant heat from near-surface waters to the mid-depths. Such behavior would be increasingly favored as surface waters become warmer, as has recently occurred. This could conceivably have contributed to the recent ‘pause’ in the anthropogenic greenhouse effect.
At the origin of life, diurnal thermal harvesting by non-motile organisms could evolve far more easily than photosynthesis, and might have preceded both photosynthesis and the use of external chemical energy.
Category: Physics of Biology

[1] viXra:1402.0047 [pdf] submitted on 2014-02-07 01:56:50

The Life and Death

Authors: A.Veselov
Comments: 15 Pages.

Как любят писать, в научной литературе, энтропия – это стремление материи к хаосу. Хотя на самом деле, определение это достаточно расплывчато и малопонятно, ведь как-то нелогично назвать хаосом состояние равномерного распределения.
Category: Physics of Biology