34 research outputs found
Monte Carlo simulation for radiative kaon decays
For high precision measurements of K decays, the presence of radiated photons
cannot be neglected. The Monte Carlo simulations must include the radiative
corrections in order to compute the correct event counting and efficiency
calculations. In this paper we briefly describe a method for simulating such
decays.Comment: 11 pages, 1 figur
Heirs of Colonel Archibald Loughery.
30-1Public LandsReport : Claim of of the Heirs of A. Loughery. [526] Indian compaign of 1781 in Ohio.1848-11
Basil Brown
24-1Indian AffairsReport : Petition of B. Brown. [295] Miami Indians; negotiation of treaty in Oct. 1834.1836-10
Noise evaluation of a point autofocus surface topography measuring instrument
In this work, the measurement noise of a point autofocus surface topography measuring instrument is evaluated, as the first step towards establishing a route to traceability for this type of instrument. The evaluation is based on the determination of the metrological characteristics for noise as outlined in draft ISO specification standards by using a calibrated optical flat. The static noise and repeatability of the autofocus sensor are evaluated. The influence of environmental disturbances on the measured surface topography and the built-in software to compensate for such influences are also investigated. The instrument was found to have a measurement noise of approximately 2 nm or, when expressed with the measurement bandwidth, 0.4 nm/√Hz for a single-point measurement
The Beast from the East: impact of an atypical cold weather event on hydrology and nutrient dynamics in two Irish catchments
peer-reviewedA historic lack of continuous stream nutrient monitoring at the catchment scale limits understanding of the effects
of snowstorms. The most significant snowstorm since 1985, nicknamed “the Beast from the East”, occurred in
February–March 2018. High-frequency stream outlet monitoring in two close but hydrologically and agriculturally
contrasting catchments (<1,200 ha) captured phosphorus (total and reactive), total oxygenated nitrogen (TON),
temperature and discharge dynamics during and after the event. The grassland catchment consists of poorly
drained gley soils and exhibits overland flow pathways, while the arable catchment consists of well-drained brown
earths and is dominated by subsurface pathways. Nitrate (NO3-N) concentrations were initially elevated (3.50
and 7.89 mg/L for poorly drained grassland and well-drained arable catchments, respectively) before becoming
diluted by meltwater. Total reactive phosphorus (TRP) displayed a distal (anti-clockwise) concentration-discharge
hysteresis in the poorly drained grassland catchment suggesting low mobilisation from the soil. Conversely, the
well-drained arable catchment displayed proximal (clockwise) hysteresis, indicative of the mobilisation from stream
and bank sediment. These relatively infrequent snow events behave similarly to heavy rainfall as regards nutrient
losses, albeit subject to a time-lag induced by the speed of snowmelt and the soil moisture deficit (SMD) prior to
snowfall. Antecedent land management is crucial to mitigate risk. The current absence of records and analyses of
catchment response, particularly nutrient dynamics, to atypical cold weather events in Ireland limits understanding
of their effects on water quality. The present study provides the first such baseline information from which land
management strategies and the implications for attaining environmental targets can be explored
alatum
Lythrum alatum Purshwinged loosestrife;winged lythrumalatumabout 1 mile east of BeltonOpen prairie, along a railroa
Carex
Bertha Bay Viewpointgrass and rock opening in Picea and Pinus contorta latifolia4500 feetHer
pentachaeta
Thymophylla pentachaeta (DC.) Smallfiveneedle pricklyleafDyssodia pentachaetaEmpireta Ranch, north end of the Whetston Mountainswaste ground on ridge