1,721,857 research outputs found
[Memorandum by Rio S. Pierce]
No full textMemorandum by Rio S. Pierce to Chief J. E. Curry, listing the names of the security officers on duty during the transfer of Lee Harvey Oswald
[Memorandum by Rio S. Pierce]
No full textMemorandum by Rio S. Pierce regarding changes in personnel assignments in order to cover traffic corner locations surrounding City Hall. Pierce provides a list of Officers that were given traffic assignments
What is life? : common patterns of organism function and species survival
No full textThe vast range of biological diversity evident on Earth masks a small number of essential ‘primary’ functions that determine survival: growth, maintenance and reproduction. Growth is linked with the ability to compete with other organisms, and may be maximized by large size and the monopolization of resources as part of an ‘acquisitive’ way of life. Maintenance of metabolic performance in response to environmental limitations (stress factors) may be optimized by a conservative way of life, depending on cellular protection/repair mechanisms and resource accumulation. Reproduction is central to the renewal of populations when individuals die, and thus the survival of the species despite the demise of the single organism. All species must perform these functions, but the importance of each one in any particular habitat depends on local conditions of productivity, stress and the occurrence of destructive disturbance events. The evolutionary trade-off between primary functions forms the basis of the CSR theory of plant strategies. I shall discuss recent developments in the practical application of CSR theory world-wide, born from a global collaborative effort lead by Italian and Brazilian research groups. Key examples from Brazilian and European ecosystems show how the method is starting to be used to investigate a range of plant community processes ranging from the co-existence of species at centimetre scales to understanding of the persistence and conservation of vegetation types across changing landscapes. I shall also discuss how this research on plants is relevant to communities of animals and microorganisms as part of the more general Universal Adaptive Strategy Theory (UAST)
In vitro propagation, cultivation and reintroduction of the genus Ophrys (Orchidaceae) during one of the largest orchid restocking projects in the world
Full text linkIn vitro propagation, cultivation and reintroduction of the genus Ophrys (Orchidaceae) during one of the largest orchid restocking projects in the worl
La propagation, cultivation et conservation des orchidées terrestres d’Europe
Full text linkLa propagation, cultivation et conservation des orchidées terrestres d’Europ
La propagazione, coltivazione e rafforzamento di flora minacciate e/o rare dei prati magri del Parco Monte Barro
Full text linkImplications for biodiversity conservation of the lack of consensus regarding the humped-back model of species richness and biomass production
No full textThe conservation of terrestrial orchids
No full textOrchids include some of the rarest and most
beautiful plants in nature, but their existence in
Lombardy is intimately intertwined with
agriculture and traditional ways of life throughout
the richly diverse geographic landscape of the
region. This book charts the spread of orchids
alongside traditional agricultural methods and,
following the tumultuous changes in human
society since industrialisation, the efforts of
Lombardy’s parks and individuals to conserve them
in the modern world. We see how the survival of
these plants actually depends on being rare, and on
the plants and other organisms they are surrounded
by. Written for members of the public and students
of conservation, this book investigates the modern
techniques used to conserve these most striking
and intriguing of flowers
What is life? : spontaneous directional motion in the molecular storm
No full textThe process of life was described by physicist Erwin Schrödinger as the spontaneous creation of order in a universe characterized by increasing disorder – he referred to this as ‘negative entropy’. Recent knowledge of the molecular machines that perform work inside cells is revealing that disorderly ‘positive entropy’ is not inimical to life but is actually the force that sets life in motion: molecular machines perform unidirectional actions and create order driven partly by a storm of molecular movement resulting from thermal agitation. I will present details of these essential living processes and a modern definition of the word ‘life’. As entropy is a universal phenomenon and around 5% of the star systems so far examined host planets in a zone of thermal agitation suitable for organic life, I will present the case that life is almost certainly extremely common throughout the universe. I will present a realistic view of life on these worlds. By the end of the seminar participants will understand what it is exactly that makes them living beings, and they will appreciate how the vast timescales involved in the evolution of complex, multi-cellular, sentient organisms makes them a particularly rare and special manifestation of life in the universe
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