120,804 research outputs found
Letters exchanged in June 1977 between Lorenzo A. Richards and James D. Rhoades
No full textLetters exchanged in June 1977 between Lorenzo A. Richards and James D. Rhoades of the Journal of the Soil Science Society of America: (1) Letter dated 4 June 1977 from Lorenzo A. Richards and James D. Rhoades, declining to review the article; (2) Letter dated 3 June 1977 from James D. Rhoades to Lorenzo A. Richards, requesting that he review an enclosed manuscript submitted for publication in the Journal of the Soil Science Society of AmericaUNITED STATES DEPARTMENT OF AGRICULTURE AGRICULTURAL RESEARCH SERVICE TC. eoi-,™. U.S. SALINITY LABORATORY TELEPHONE: PLEASE REPLY TO: 714-S83-0170 4500 GLENWOOD DRIVE PO B O X 6 72 RIVERSIDE, CALIFORNIA 92501 RIVERSIDE, CA 92502 June 3, 1977 Dr. L. A. Richards 4455 Fifth Street Riverside, Ca. Dear Dr. Richards: The enclosed manuscript, "A Two-Element Ceramic Sensor for Moisture and Salinity- Measurements in Coal Spoils," by David G0 Scholl, has been submitted for possible publication in the Journal of Soil Science Society of America. I would appreciate your review of this manuscript using the format explained in the enclosed forms. In particular, please note that your recommendation regarding disposition of the manuscript should be kept separate from the review comments. For your information, I have enclosed copies of the Society\u27s publication policy and guide for reviewers. If you cannot complete the review within the next three weeks, please return the manuscript to me. Sincerely, James D. Rhoades Assoc. Ed., Division II Soil Sci0 Soc. Amer. Journal Enclosures JDRre
Fisiologia Generale e Umana - Rhoades R. and Pflanzer R - II edizione sulla IV americana
No full textFisiologia Generale e Umana - Rhoades R. and Pflanzer R - II edizione sulla IV americana, Presentazione dell'edizione italiana del prof. Francesco Lacquanit
Verne Rhoades to Horace Kephart, March 18, 1930
No full textIn a letter to Horace Kephart on March 18, 1930, Verne Rhoades, executive secretary for the North Carolina Park Commission is letting Kephart know that he was voted onto the Committee on Nomenclature to assist the National Geographic Board with features in the Great Smoky Mountains National Park.NORTH CAROLINA PARK COMMISSION
CREATED BY THE STATE OF NORTH CAROLINA
TO ESTABLISH A NATIONAL PARK IN
THE GREAT SMOKY MOUNTAINS
EUGENE C. BROOKS, Raleiah
D. M. BUCK, Bald Mountain
JOHN G. DAWSON, Kinston
PLATO D.EBBS.Asheville
R.T.FOUNTAIN, Rocky Mouni
MARK SQUIRES, Chairman. Lenoir
EUGENE C. BROOKS, Secretary, Raleigh
VERNE RHOADES, Executive Secretary, Asheville
606 City Building,
P. 0. Box 1232,
Asheville, N. C.
J. A. HARDtSON, Wadesboro
STUART W. CRAMER, Jr., Cramerton
J. ELMER LONG, Durham
HARRY L. NETTLES, Biltmore
E. S.PARKER, Jr., Greensboro
M ARK SQUIRES, Lenoir
March 18, 1930.
Mr. Horace Kephart,
Bryson City, N. C.
Dear Mr. Kephart:
At its meeting yesterday the North Carolina Park Commission voted that you be added to the Committee on Nomenclature
to assist the National Geographic Board in naming the principal
topographic features within the Smoky Mountain National Park. Mr.
Hiden Ramsey and you and myself constitute this committee, provided
you agree to serve. I earnestly hope you will, since you know more
about it than either Ramsey or myself.
I am aware of what both you and George Masa have done
in this regard, and am most appreciative of your helpful efforts in
this particular.
Mr. Squires himself may notify you of this appointment.
He left town feeling unwell yesterday and it may slip his mind.
Therefore, I am taking this opportunity of writing you myself.
With sincere regards, I am
Very truly yours,
Verne Rhoades,
Executive Secretary.
VR:
Force Of Impact That Killed Four Near Altus
No full textPhotograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Force of impact that killed four near Altus is illustrated by this picture taken by Charles D. Rhoades, Oklahoma City, director of the Oklahoma Wheat Commission, who happened upon accident shortly after it occurred. Hood of pickup truck was fused to car's roof.
ALTUS - Four persons were killed and two others were seriously hurt Monday in the head-on collision of a car and a pickup truck on a straight stretch of US-62 east of Altus.
Postmortem regulation of glycolysis by 6-phosphofructokinase in bovine muscle
No full textThis study was conducted to assess the regulation of glycolysis by 6phosphofructokinase (PFK) during the postmortem metabolism of beef muscle. In the first experiment, M. sternocephalicus pars mandibularis samples were excised from six randomly-selected steers. Two samples were obtained from each steer immediately postmortem; one sample was quickly immersed in liquid nitrogen and the other was stored at 4oC for 4 d. Glycogen concentrations decreased 45% from d 0 to d 4, and 39.6 ?mol/g of glycogen was still present in the tissue at d 4. Concentrations of free glucose increased (P < 0.001) from 0.84 ?mol/g at d 0 to 6.54 ?mol/g at d 4. Fructose-6-phosphate (F6P) and glucose-6-phosphate (G6P) increased (P < 0.001) from d 0 to d 4 (2.8-fold and 4.7-fold, respectively). Lactate began accumulating immediately (3.33 ?mol/g) and was elevated to 45.9 ?mol/g by d 4. Glycolytic potential was 34.4 ?mol/g higher (P < 0.05) when measured at d 0 than at d 4. The greatest activity of PFK was measured in fresh muscle extracts, between pH 7.4-7.8; by reducing the pH to 7.0, PFK activity was depressed by nearly 50% at 1 mM F6P.
In a second experiment, M. longissimus lumborum samples were excised at the 13th thoracic rib location from six randomly-selected steers. Samples were obtained at intervals ranging from 40 min to 24 h postmortem. Glycogen concentrations decreased 45% between 40 and 100 min, and tended (P ≤ 0.10) to decrease between 100 min and 24 h (from 47 to 32 ?mol/g). Concentrations of free glucose increased (P ≤ 0.009) from
1.0 ?mol/g at 40 min to 5.0 ?mol/g at 24 h. Concentrations of F6P and G6P increased dramatically after 100 min (muscle pH ≤ 6.5), whereas glycogen depletion appeared to halt by 100 min. Lactate began accumulating almost immediately and tripled in concentration by 24 h. The elevation of G6P and F6P, coupled with the pH sensitivity of PFK, indicate that the postmortem decline in pH ultimately inactivates PFK prior to glycogen depletion
Numerical analysis of a 3-D printed porous trailing edge for broadband noise reduction
No full textLattice Boltzmann simulations were carried out to investigate the noise mitigation mechanisms of a 3-D printed porous trailing-edge insert, elucidating the link between noise reduction and material permeability. The porous insert is based on a unit cell resembling a lattice of diamond atoms. It replaces the last 20 % chord of a NACA 0018 at zero angle-of-attack. A partially blocked insert is considered by adding a solid partition between 84 % and 96 % of the aerofoil chord. The regular porous insert achieves a substantial noise reduction at low frequencies, although a slight noise increase is found at high frequencies. The partially blocked porous insert exhibits a lower noise reduction level, but the noise emission at mid-to-high frequency is slightly affected. The segment of the porous insert near the tip plays a dominant role in promoting noise mitigation, whereas the solid-porous junction contributes, in addition to the rough surface, towards the high-frequency excess noise. The current study demonstrates the existence of an entrance length associated with the porous material geometry, which is linked to the pressure release process that is responsible for promoting noise mitigation. This process is characterised by the aerodynamic interaction between pressure fluctuations across the porous medium, which is found at locations where the porous insert thickness is less than twice the entrance length. Present results also suggest that the noise attenuation level is related to both the chordwise extent of the porous insert and the streamwise turbulent length scale. The porous inserts also cause a slight drag increase compared to their solid counterpart. Wind Energ
Pseudo-prospective Evaluation of UCERF3-ETAS Forecasts During the 2019 Ridgecrest Sequence
No full textThe 2019 Ridgecrest sequence provides the first opportunity to evaluate Uniform California Earthquake Rupture Forecast Version 3 with Epidemic Type Aftershock Sequences (UCERF3-ETAS) in a pseudo-prospective sense. For comparison, we include a version of the model without explicit faults more closely mimicking traditional ETAS models (UCERF3-NoFaults). We evaluate the forecasts with new metrics developed within the Collaboratory for the Study of Earthquake Predictability (CSEP). The metrics consider synthetic catalogs simulated by the models rather than synoptic probability maps, thereby relaxing the Poisson assumption of previous CSEP tests. Our approach compares statistics from the synthetic catalogs directly against observations, providing a flexible approach that can account for dependencies and uncertainties encoded in the models. We find that, to first order, both UCERF3-ETAS and UCERF3-NoFaults approximately capture the spatiotemporal evolution of the Ridgecrest sequence, adding to the growing body of evidence that ETAS models can be informative forecasting tools. However, we also find that both models mildly overpredict the seismicity rate, on average, aggregated over the evaluation period. More severe testing indicates the overpredictions occur too often for observations to be statistically indistinguishable from the model. Magnitude tests indicate that the models do not include enough variability in forecasted magnitude-number distributions to match the data. Spatial tests highlight discrepancies between the forecasts and observations, but the greatest differences between the two models appear when aftershocks occur on modeled UCERF3-ETAS faults. Therefore, any predictability associated with embedding earthquake triggering on the (modeled) fault network may only crystalize during the presumably rare sequences with aftershocks on these faults. Accounting for uncertainty in the model parameters could improve test results during future experiments
Application of the EEPAS earthquake forecasting model to Italy
No full textThe Every Earthquake a Precursor According to Scale (EEPAS) forecasting model is a space-time point-process model based on the precursory scale increase (ψ) phenomenon and associated predictive scaling relations. It has been previously applied to New Zealand, California and Japan earthquakes with target magnitude thresholds varying from about 5-7. In all previous application, computations were done using the computer code implemented in Fortran language by the model authors. In this work, we applied it to Italy using a suite of computing codes completely rewritten in Matlab. We first compared the two software codes to ensure the convergence and adequate coincidence between the estimated model parameters for a simple region capable of being analysed by both software codes. Then, using the rewritten codes, we optimized the parameters for a different and more complex polygon of analysis using the Homogenized Instrumental Seismic Catalogue data from 1990 to 2011. We then perform a pseudo-prospective forecasting experiment of Italian earthquakes from 2012 to 2021 with M-w >= 5.0 and compare the forecasting skill of EEPAS with those obtained by other time independent (Spatially Uniform Poisson, Spatially Variable Poisson and PPE: Proximity to Past Earthquakes) and time dependent [Epidemic Type Aftershock Sequence (ETAS)] forecasting models using the information gain per active cell. The preference goes to the ETAS model for short time intervals (3 months) and to the EEPAS model for longer time intervals (6 months to 10 yr)
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
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