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Physical properties of contaminated trichloroethylene and 1,1,1- trichloroethane
The specific gravity, volume change, dielectric constant, dissipation factor, boiling point, and nonvolatile residue carryover during distillation was measured for various contamination levels of rosin in trichloroethylene and 1,1,1-trichloroethane. Solvent stabilizers and the vapor pressure of solvents were examined. The effects of unknown contamination in solvents from manufacturing departments were measured. The theoretical effects of oil contamination on the boiling point are discussed. 18 refs., 15 figs., 13 tabs
Retrospective determination of trophic relationships among pelagic fishes associated with Sargassum mats in the Gulf of Mexico; Determinacion retrospectiva de las relaciones troficas entre peces pelagicos asociados a las matas de Sargassum en el Golfo de Mexico
Flamingo Vol. II N 1
Judge. Untitled. Prose. 1.
Siren. Untitled. Prose. 1.
Purple Cow. Untitled. Prose. 1.
Borington, R.D. Deacon Frowzy\u27s Son . Prose. 5.
G.W.B. Cynic . Poem. 8.
Anonymous. Les Hommes Mysterieux . Poem. 8.
K.K.H. October . Poem. 8.
G.W.B. Petition . Poem. 8.
Society Editor. A Line-A-Day Book For Co-Eds . Prose. 9.
Schmitz, Edward. Untitled.Picture. 9.
W.D.P. Untitled. Prose.9.
Anonymous. SSS . Prose. 9.
Anonymous. Untitled. Prose. 9.
Anonymous. Untitled. prose. 10.
Potter, W.M. Crooning of a Japanese Sandman .
Anonymous. Geographical Influence . Prose. 10.
George. Vest Pocket News . Prose. 11.
Anonymous. Deed\u27s Field-The First Kick-Off . Picture. 12.
Anonymous. Denison\u27s Hall of Fame: Kirtley F. Mather .
Anonymous. Untitled. Prose. 14.
Keeler, Clyde. Once Upon A Time . Cartoon. 16.
Anonymous. Untitled. Prose. 18.
Anonymous. College Song B.C. 56 . Prose. 18.
Anonymous. One Student Classification . Poem. 18.
Anonymous. Yea Neptune! . Poem. 18.
Anonymous. Untitled. Poem. 19.
Punch Bowl. Strongly Prejudiced . Prose. 19.
Jester. Follow Copy . Prose. 19.
Lord Jeff. Untitled. Prose. 19.
Anonymous. Untitled. Prose. 20.
Anonymous. Page Mr. Edison . Prose. 20.
Speicher. Untitled. Picture. 20.
Williams, Grace. Untitled. Picture. 20.
Anonymous. Untitled. Prose. 21.
Suds. Untitled. Picture. 21.
Exchange. Untitled. Prose. 21.
Wag Jag. Untitled. Prose. 21.
Punch Bowl. Untitled. Prose. 22.
Purple Cow. Untitled. Prose. 22.
Purple Cow. In The Trenches Prose. 22.
Tar Baby. Untitled. Prose. 22.
Exchange. Untitled. Prose. 22.
Jester. Untitled. Prose. 22.
Exchange. Untitled. Prose. 25.
Siren. Untitled. Prose. 25.
Widow. Untitled. Prose. 25.
Anonymous. Untitled. Prose. 25.
Voo-Doo. Untitled. Prose. 25.
Froth. Untitled. Prose. 25.
Judge. It\u27s A Long Turn . Prose. 25.
Anonymous. Untitled. Prose. 25.
Voo-Doo. Strange . Prose. 28.
Sun Dial. Untitled. Prose. 28.
Jester. Straight Dope Prose. 28.
Banter. Untitled. Prose. 28.
Jester. Untitled. Prose. 28.
Forth. Additions Prose. 30.
Purple Cow. Untitled. Prose. 30.
Puppet. A Mouthful . Prose. 30.
Showme. Untitled. Prose. 30.
Exchange. Untitled. Prose. 30.
Scalper. Talking to \u27Em . Prose. 30.
Dirge. Untitled. prose. 30.
Exchange. Untitled. Prose. 31.
Widow. Untitled. Prose. 31.
Jester. In The French Class . Prose. 31.
Ubersax, Delmar. Untitled. Picture. 3
Flamingo Vol. I N 4
Orange Owl. Off Again . Prose. 1.
Jester. Alas! . Prose. 1.
Anonymous. Untitled. Prose. 1.
Purple Cow. Untitled. Prose. 1.
Banter. Untitled. Prose. 1.
Burr. Pride . Prose. 2.
Lampoon. Untitled. Prose. 2.
The Goblin. Untitled. Prose. 2.
Exchange. Untitled. Prose. 2.
Tiger. Untitled. Prose. 2.
Chaparral. O, Dear! Prose. 2.
Hicks, H. Leslie. Untitled. Picture. 3.
Anonymous. Denison Customs We Don\u27t Want Revived . Prose. 4.
Wellman, Chester. Buffalo George . Prose. 5.
Bovington, R.D. Avery The Anxious . Prose. 9.
D.U.K. Spring In a Poetic Lie Sense . Prose. 10.
Anonymous. Yeh? . Prose. 10.
Anonymous. A Review . Prose. 10.
George. Vest Pocket Views . 11
Anonymous. Untitled. Prose. 11.
The Siren. Untitled. Prose. 11.
Montgomery, E.E. Commencement in 1871 . Prose. 12.
Anonymous. A Riddle . Poem. 12.
Anonymous. Song From Pippa Passes . Poem. 12.
Orange Peel. Untitled. Prose. 12.
Jug. Sad News . Prose. 12.
Anonymous. Untitled. Prose. 14.
Keeler, Clyde E. Picture. 16.
G.W.B. Butterflies . Poem. 18.
C.E.K. Scientific Sonnett . Poem. 18.
Anonymous Untitled. Poem. 18.
T.P.G. Twilight . Poem. 18.
R.D.B. Untitled. Poem. 18.
G.W.B. Use of The Immaterial . Poem. 18.
Anonymous. Untitled. Prose. 19.
Anonymous. Untitled. Picture. 19.
Anonymous. Tuff . Prose. 19.
Octopus. Untitled. Prose. 19.
Panther. Untitled. Prose. 19.
Orange Ade. The Fable of the Scheming Sisters . Prose. 19.
Anonymous. Untitled. Prose. 20.
Brown Jug. Untitled. Prose. 20.
Potter, W.M. Letters Of A Japanese Sandman . Prose. 20.
Anonymous. Well Known Seniors . Prose. 21.
Hicks. Well-Known Seniors . Picture. 21.
Anonymous. A Chemical Drama . Prose. 22.
R.D.B. Untitled. Picture. 23
Anonymous. News of The Month . Prose. 23.
Anonymous. Student Philosophy . Prose. 23.
Anonymous. Untitled. Prose. 23.
Keeler, Clyde. Empty? Picture. 26.
Grogan. Untitled. Picture. 27.
Anonymous. Untitled. Prose. 27.
Drexerd. Untitled. Prose. 27.
Mugwump. Untitled. Prose. 27.
Sun Dodger. Circumstantial Evidence . Poem. 27.
Pelican. Jailed toot Sweet . Prose. 27.
Chaparral. Untitled. Prose. 27.
Brown Jug. Untitled. Prose. 27.
Tiger. Untitled. Prose. 27.
Siren. Untitled. Prose. 27.
Puppet. Untitled. Prose. 27.
Widow. Untitled. Prose. 27.
Yale Record. Untitled. Prose. 27.
Frivol. Untitled. Prose. 27.
Gorkus. Untitled. Poem. 28.
Dirge. Untitled. Prose. 28.
Exchange. Untitled. Prose. 28.
Anonymous. Untitled. prose. 29.
Anonymous. Ye Wise Virgin . Prose. 30.
Froth. Overheard At The Hashery . Prose. 30
Reel, Virginia. Untitled. Prose. 30.
Keeler, Clyde. Untitled. Picture. 31.
Banter. Untitled. Prose. 31.
Puppet. Untitled. Prose. 31.
Banter. Untitled. Prose. 31.
Jester. Untitled. Prose. 32.
Record. Untitled. Prose. 32.
Anonymous. A Cultivated Joke . Prose. 32.
Lampoon. Untitled. Prose. 32.
Exchange. Untitled. Prose. 32.
J.M. Untitled. Picture. 31.
J.M. Untitled. Picture. 32.
Holt, Kilburn. Bo-Peep As She Might Have Been Sung By--- . Poem. 8.
Peterson, Louise. Helpful hints For Heedless Horsewomen . Prose. 11
Climatic niche shifts between species' native and naturalized ranges raise concern for ecological forecasts during invasions and climate change
Copyright © 2014 WileyAim: Correlative models that forecast extinction risk from climate change and invasion risks following species introductions, depend on the assumption that species’ current distributions reflect their climate tolerances (‘climatic equilibrium’). This assumption has rarely been tested with independent distribution data, and studies that have done so have focused on species that are widespread or weedy in their native range. We use independent data to test climatic equilibrium for a broadly representative group of species, and ask whether there are any general indicators that can be used to identify when equilibrium occurs. Location: Europe and contiguous USA. Methods: We contrasted the climate conditions occupied by 51 plant species in their native (European) and naturalized (USA) distributions by applying kernel smoothers to species’ occurrence densities. We asked whether species had naturalized in climate conditions that differ from their native ranges, suggesting climatic disequilibrium in the native range, and whether characteristics of species’ native distributions correspond with climatic equilibrium. Results: A large proportion of species’ naturalized distributions occurred outside the climatic conditions occupied in their native ranges: for 22 species, the majority of their naturalized ranges fell outside their native climate conditions. Our analyses revealed large areas in Europe that species do not occupy, but which match climatic conditions occupied in the USA, suggesting a high degree of climatic disequilibrium in the native range. Disequilibrium was most severe for species with native ranges that are small and occupy a narrow range of climatic conditions. Main conclusions: Our results demonstrate that the direct effects of climate on species distributions have been widely overestimated, and that previous large-scale validations of the equilibrium assumption using species’ native and naturalized distributions are not generally applicable. Non-climatic range limitations are likely to be the norm, rather than the exception, and pose added risks for species under climate change.Fundação para a Ciência e a Technologi
Phase transition and selection in a four-species cyclic Lotka-Volterra model
We study a four species ecological system with cyclic dominance whose
individuals are distributed on a square lattice. Randomly chosen individuals
migrate to one of the neighboring sites if it is empty or invade this site if
occupied by their prey. The cyclic dominance maintains the coexistence of all
the four species if the concentration of vacant sites is lower than a threshold
value. Above the treshold, a symmetry breaking ordering occurs via growing
domains containing only two neutral species inside. These two neutral species
can protect each other from the external invaders (predators) and extend their
common territory. According to our Monte Carlo simulations the observed phase
transition is equivalent to those found in spreading models with two equivalent
absorbing states although the present model has continuous sets of absorbing
states with different portions of the two neutral species. The selection
mechanism yielding symmetric phases is related to the domain growth process
whith wide boundaries where the four species coexist.Comment: 4 pages, 5 figure
The functional role of biodiversity in ecosystems: incorporating trophic complexity
Understanding how biodiversity affects functioning of ecosystems requires integrating diversity within trophic levels (horizontal diversity) and across trophic levels (vertical diversity, including food chain length and omnivory). We review theoretical and experimental progress toward this goal. Generally, experiments show that biomass and resource use increase similarly with horizontal diversity of either producers or consumers. Among prey, higher diversity often increases resistance to predation, due to increased probability of including inedible species and reduced efficiency of specialist predators confronted with diverse prey. Among predators, changing diversity can cascade to affect plant biomass, but the strength and sign of this effect depend on the degree of omnivory and prey behaviour. Horizontal and vertical diversity also interact: adding a trophic level can qualitatively change diversity effects at adjacent levels. Multitrophic interactions produce a richer variety of diversity‐functioning relationships than the monotonic changes predicted for single trophic levels. This complexity depends on the degree of consumer dietary generalism, trade‐offs between competitive ability and resistance to predation, intraguild predation and openness to migration. Although complementarity and selection effects occur in both animals and plants, few studies have conclusively documented the mechanisms mediating diversity effects. Understanding how biodiversity affects functioning of complex ecosystems will benefit from integrating theory and experiments with simulations and network‐based approaches
Parallel ecological networks in ecosystems
In ecosystems, species interact with other species directly and through abiotic factors in multiple ways, often forming complex networks of various types of ecological interaction. Out of this suite of interactions, predator–prey interactions have received most attention. The resulting food webs, however, will always operate simultaneously with networks based on other types of ecological interaction, such as through the activities of ecosystem engineers or mutualistic interactions. Little is known about how to classify, organize and quantify these other ecological networks and their mutual interplay. The aim of this paper is to provide new and testable ideas on how to understand and model ecosystems in which many different types of ecological interaction operate simultaneously. We approach this problem by first identifying six main types of interaction that operate within ecosystems, of which food web interactions are one. Then, we propose that food webs are structured among two main axes of organization: a vertical (classic) axis representing trophic position and a new horizontal ‘ecological stoichiometry’ axis representing decreasing palatability of plant parts and detritus for herbivores and detrivores and slower turnover times. The usefulness of these new ideas is then explored with three very different ecosystems as test cases: temperate intertidal mudflats; temperate short grass prairie; and tropical savannah
A-dependence of nuclear transparency in quasielastic A(e,e'p) at high Q^2
The A-dependence of the quasielastic A(e,e'p) reaction has been studied at
SLAC with H-2, C, Fe, and Au nuclei at momentum transfers Q^2 = 1, 3, 5, and
6.8 (GeV/c)^2. We extract the nuclear transparency T(A,Q^2), a measure of the
average probability that the struck proton escapes from the nucleus A without
interaction. Several calculations predict a significant increase in T with
momentum transfer, a phenomenon known as Color Transparency. No significant
rise within errors is seen for any of the nuclei studied.Comment: 5 pages incl. 2 figures, Caltech preprint OAP-73
Masses of ground and excited-state hadrons
We present the first Dyson-Schwinger equation calculation of the light hadron
spectrum that simultaneously correlates the masses of meson and baryon ground-
and excited-states within a single framework. At the core of our analysis is a
symmetry-preserving treatment of a vector-vector contact interaction. In
comparison with relevant quantities the
root-mean-square-relative-error/degree-of freedom is 13%. Notable amongst our
results is agreement between the computed baryon masses and the bare masses
employed in modern dynamical coupled-channels models of pion-nucleon reactions.
Our analysis provides insight into numerous aspects of baryon structure; e.g.,
relationships between the nucleon and Delta masses and those of the
dressed-quark and diquark correlations they contain.Comment: 25 pages, 7 figures, 4 table
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