1,506 research outputs found
Ultralight reactive metal foams produced as structural shapes in space: System design
This autonomous experiment for foaming metals in space involved: (1) payload support structure; (2) furnace and foaming apparatus; (3) electronic controls; (4) battery power; and (5) metallurgy. Emphasis was laid on a modular design which was easily modifiable and which offered maximum durability, safety, and failure tolerance
NUV/Blue spectral observations of sprites in the 320-460 nm region: (2PG) Emissions
A near-ultraviolet (NUV) spectrograph (320-460 nm) was flown on the EXL98
aircraft sprite observation campaign during July 1998. In this wavelength range
video rate (60 fields/sec) spectrographic observations found the NUV/blue
emissions to be predominantly N2 (2PG). The negligible level of N2+ (1NG)
present in the spectrum is confirmed by observations of a co-aligned, narrowly
filtered 427.8 nm imager and is in agreement with previous ground-based
filtered photometer observations. The synthetic spectral fit to the
observations indicates a characteristic energy of ~1.8 eV, in agreement with
our other NUV observations.Comment: 7 pages, 2 figures, 1 table, JGR Space Physics "Effects of
Thunderstorms and Lightning in the Upper Atmosphere" Special Sectio
Anionic salts in the prepartum diet and addition of sodium bicarbonate to colostrum replacer and their effects on IgG absorption in the neonate
Forty Holstein cows were assigned to a 2 X 2 factorial arrangement of treatments in a completely randomized block design to one of four treatments: basal diet and no sodium bicarbonate in the colostrum replacer; basal diet and supplemental sodium bicarbonate in the colostrum replacer; anionic salts and no sodium bicarbonate in the colostrum replacer; anionic salts and supplemental sodium bicarbonate in the colostrum replacer. Calves received two doses of colostrum replacer +/- sodium bicarbonate at 0 h, 1 dose of colostrum replacer +/- sodium bicarbonate at 6 hours and milk replacer at 12, 24, 36 and 48 hours. Calves receiving sodium bicarbonate had higher serum IgG levels at 24 hours, and higher apparent efficiency of absorption values as compared to calves that did not receive supplemental sodium bicarbonate. Feeding anionic salts during the pre-fresh period did not affect IgG absorption in calves
From Useful Knowledge to Rational Amusement: Museums in Early America
This study examines the rise of early American museums following their birth from intellectual societies in the American colonies. The two primary categories of collections, scientific and patriotic items, were examined for their significance and intended purpose. Likewise, both popular education and interesting entertainment were identified as factors for encouraging early museum proprietors to seek the appeal of the general public while simultaneously drawing visitors to these early establishments of learning and leisure.
In order to understand the motives behind intellectuals’ desires for popular education, scientific knowledge, and patriotic enthusiasm, the writings of many American intellectual elites were consulted. The study relied upon writings of the Founding Fathers to better understand the growing importance of educating the general public and the desire to form a stronger and more resilient nation following the American Revolution. In addition, broadside and newspaper advertisements, biographical accounts, and the extensive papers of Charles Willson Peale, one of Philadelphia’s first museum proprietors, helped trace the development of museums from a specialized scientific cabinet associated with private intellectual organizations to the establishment of publicly available museums.
This study challenges the long held belief that cabinets of curiosity and early museums were comprised of random items with no clear objective or purpose in mind. In fact, research indicated that the ideas for creating profitable, educational, and entertaining museums mattered greatly in revolutionary America. The two earliest museums in Philadelphia serve as models to study the birth of publicly accessible museums in America. The formation of these two influential museums in the late eighteenth and early nineteenth centuries, inaugurated issues surrounding museums that still persist some two hundred-twenty years later
Apportionment of Representation: Speech of Hon. Lot M. Morrill, of Maine, in the Senate of the United States, March 8, 1866
A speech given by Maine Senator Lot M. Morrill in 1866 in support of giving the right to vote to freed slaves
Speech of Hon. Lot M. Morrill of Maine in the Senate of the United States, February 5, 1868
A speech on the topic of Reconstruction by the Honorable Lot M. Merrill of Maine in the Senate of the United States, February 5, 1868
Alien Registration- Morrill, Huch M.,Sr. (Greenville, Piscataquis County)
https://digitalmaine.com/alien_docs/11410/thumbnail.jp
Two Methods to Determine IgG Concentration in Calf Serum
The objective of this study was to develop a rapid, calfside test to determine serum IgG concentration using caprylic acid (CA) fractionation followed by refractometry of the IgG-rich supernatant and compare the accuracy of this method with results obtained using refractometry of whole serum. Serum samples (n = 200) were obtained from 1 d old calves, frozen and shipped to the laboratory. Samples were allowed to sit at room temperature to thaw. Fractionation with CA was conducted by adding 1 ml of serum to a tube containing CA and 0.5, 1 or 1.5 mL 0.06 M acetic acid. The tube was shaken and allowed to react for 1 min and centrifuged for 0, 10 or 20 min. Refractive index of the fractionated supernatant (nDf) was determined using a digital refractometer. Whole, non-fractionated, serum was analyzed for IgG by radial immunodiffusion (RID) and refractive index (nDw). The nDf and nDw were compared to serum IgG concentration. Mean serum IgG concentration was 19.0 mg/ml (SD = 9.7) with a range of 3.5 to 47.0 mg/ml. Serum nDw was positively correlated with IgG concentration (r = 0.86, n = 185). Fractionated samples treated with 1 ml 0.6 M AcO and 60 µl CA and not centrifuged prior to analysis resulted in a strong relationship between nDf and IgG (r = 0.80, n = 45). These results suggest that refractometry of whole calf serum provides a strong estimate of IgG concentration that can be used to determine if adequate passive transfer has occurred in 1 d old calves
Catalyzed oxidation of aniline by hydrogen peroxide in the presence of cnts: A Possible case of a nanodimension reaction
The oxidation of aniline by hydrogen peroxide produces nitrosobenzene as the initial product, which undergoes further oxidation to nitrobenzene. The nitrosobenzene formation is catalyzed by functionalized multiwalled carbon nanotubes (CNT) followed by a coupling reaction between nitrosobenzene and aniline to produce azobenzene. This reaction proceeds rapidly resulting in the UV-VIS absorption spectrum showing a maxima at 327 nm and 425 nm. The nitrosobenzene yield in the presence of CNTs is controlled by the amount present in the medium. As the reaction is not catalyzed by unfunctionalized CNTs or graphitic particles, the uniqueness of the functionalized multiwalled CNTs in this catalysis suggests a nano dimensional reaction pathway
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