Microhabitat use in an assemblage of native and introduced stream fishes in Wailoa Stream, Island of Hawaii

To date, most research on the ecology of Hawaiian stream fishes has taken place in the middle and upper reaches of streams. In the terminal reaches of streams in Hawaii, the ecological aspects of the relatively more diverse fish assemblages are largely unknown. This study investigated patterns of microhabitat use in an assemblage of native and introduced stream fishes living in the terminal reach of Wailoa Stream on the Island of Hawaii. Multivariate and univariate analyses of microhabitat data collected through underwater visual surveys indicated that differences in microhabitat preferences were an important factor in the structure of this assemblage. Strong differences in three-dimensional microhabitat use patterns appear to allow native gobioids and introduced poeciliids to coexist in Wailoa Stream with little competition for spatial resources. However, high overlap in the microhabitat use patterns of juvenile Kuhlia xenura and introduced Poecilia mexicana and Xiphophorus helleri is cause for concern

The diagnosis and treatment of general paralysis by a new serum

In 1901, Dr. Ford Robertson and I began a bacteriological investigation into the aetiology of General Paralysis. After 2 year.st work on the subject we published a paper along with Dr. John Jeffrey in which we produced evidence in support of the hypothesis "that General. Paralysis is the result of a chronic toxic infection from the respiratory and alimentary tracts, permitted by general and local impairment of the defences against bacteria,. and dependent upon the excessive development, of various bacterial forms, but especially upon the abundant growth of a Klebs Lóffler bacillus of modified virulence, which gives the disease its special paralytic character."Since then we have continued the investigation and we have gained fresh knowledge which has served to convince us more firmly in our original hypothesis So much so, that in his Morison Lectures last year, which were on the subject of our combined research, Dr. Robertson published the name which we had given to the special diphtheroid bacillus believed by us to be the immediate cause of Genera]. Paralysis, viz., Bacillus Paralyticans.Space will not permit me to go over the evidence upon which our belief is based, but I would like to mention that our present opinion is that General Paralysis is caused by a group of diphtheroid bacilli, which we have shown to be virulent to rats and mice.In March 1906 we began to subject sheep to the infection of these bacilli with the object of producing an immune serum for the treatment of cases of General Paralysis.Dr. Ford Robertson has very kindly allowed me to use my portion of our combined research as the subject of this thesis. It comprises the procuring the serum, giving it to patients and keeping clinical records of the results: I propose to follow this order in my description

Alien Registration- Mcrae, Hattie G. (Brownville, Piscataquis County)

https://digitalmaine.com/alien_docs/11258/thumbnail.jp

A novel approach to the global analysis of proton form factors in elastic electron-proton scattering

We present a novel method for the global analysis of elastic electron-proton scattering when combining data sets from experiments with different overall normalization uncertainties. The method is a modification of one employed by the NNPDF collaboration in the fitting of parton distribution data. This method is an alternative to the 'penalty trick' method traditionally employed in global fits to proton electric and magnetic form factors, while avoiding the biases inherent in that approach. We discuss issues that arise when extending the method to nonlinear models. For data with $Q^2>1$ GeV$^2$ we find relatively minor differences to traditional model fits when the normalization uncertainties from different experiments are correctly accounted for. We discuss implications of this method for the well-known discrepancy between the form factor ratio $G_E/G_M$ extracted from the Rosenbluth and polarization transfer techniques.Comment: 5 pages, 4 figures, 2 table

Dry deposition of nitrogen containing species

Nitrogen oxides (NO_x) emissions and the oxidation products formed by photochemical interactions in the atmosphere are responsible for a significant fraction of both dry and wet acid deposition fluxes. In his paper a vertically-resolved, Lagrangian trajectory model is used to predict the diurnal variation of: NO, NO_2, NO_3, HONO, HONO_2, HO_2NO_2, RONO, RONO_2, RO_2NO_2, N_2O_5 and PAN over an urban airshed. Particular attention is given to the fate of nitric acid and its reaction with gaseous ammonia to form, aerosol phase, ammonium nitrate. A simple model for estimating the deposition fluxes of these species is also presented. A study of the fate of nitrogen oxides emissions, in the South Coast Air Basin of southern California, is used to illustrate the procedures

Near threshold all-optical backaction amplifier

A near threshold all-optical backaction amplifier is realized. Operating near threshold in an integrated micronscale architecture allows a nearly three orders of magnitude improvement in both gain and optical power requirements over the only previous all-optical implementation, with 37 dB of gain achieved for only 12 uW of input power. Minor adjustments to parameters allows optical filtering with narrow bandwidth dictated by the mechanical quality factor. Operation at cryogenic temperatures may enable standard quantum limit surpassing measurements and ponderomotive squeezing.Comment: 4 pages, 5 figure

Cavity optoelectromechanical regenerative amplification

Cavity optoelectromechanical regenerative amplification is demonstrated. An optical cavity enhances mechanical transduction, allowing sensitive measurement even for heavy oscillators. A 27.3 MHz mechanical mode of a microtoroid was linewidth narrowed to 6.6\pm1.4 mHz, 30 times smaller than previously achieved with radiation pressure driving in such a system. These results may have applications in areas such as ultrasensitive optomechanical mass spectroscopy