The problem of the helium abundance in galactic globular clusters is discussed in light of two recent theoretical developments - the inclusion of semiconvection in horizontal-branch models and the explanation of the red edge of the RR Lyrae gap. These two results predict substantially different helium abundances. Alterations are ...

Solar models using the new lower abundances of Asplund et al. or Caffau et al. do not agree as well with helioseismic inferences as models that use the higher Grevesse & Noels or Grevesse & Sauval abundances. Adopting the new abundances leads to models with sound-speed discrepancies of up to 1.4% below the ...

Aims: We re-examine the recombination/collisional emission line (RL/CEL) nebular abundance discrepancy problem in the light of recent high-quality abundance determinations in young stars in the Orion star-forming region. Methods: We re-evaluate the CEL and RL abundances of several elements in ...

Combined with other cosmic microwave background experiments, the Wilkinson Microwave Anisotropy Probe (WMAP) survey provides an accurate estimate of the baryon density of the universe. In the framework of the standard big bang nucleosynthesis (BBN), such a baryon density leads to predictions for the primordial abundances of 4He and D in good agreement with observations. ...

Iron abundance is a key petrologic discriminator for interpretation of airless body surfaces from both remote and field perspectives. Independent measurements of iron abundance from gamma-ray/neutron and reflectance spectroscopy are available for the Moon. However, there are significant discrepancies between these two data products for ...

The discrepancy between the primordial ^7Li predicted abundance and the observed abundance in metal poor halo stars has been a longstanding problem. This problem may in fact be coupled with recent observational suggestions that there could be 2-3 orders of magnitude more ^6Li than Big Bang ...

The standard model of primordial nucleosynthesis by the Big Bang as selected by the WMAP-based estimate of the baryon density ({omega}bh2) predicts an abundance of 7Li that is a factor of three greater than the generally reported abundance for stars on the Spite plateau, and an abundance of 6Li that is about a thousand times less than ...

The Department of Defense acquires, manages, issues, and transports an immense amount of materiel each year. Discrepancy reporting is the process of identifying and resolving problems with that materiel. Currently, discrepancy reports are processed in a p...

There is a significant discrepancy between the current theoretical prediction of the cosmological lithium abundance, mostly produced as ^7Be during the Big Bang, and its observationally inferred value. We investigate whether the resonant enhancement of ^7Be burning reactions may alleviate this discrepancy. We identify one narrow ...

We investigate the modifications to predictions for the abundances of light elements from standard big-bang nucleosynthesis when exotic late-decaying particles with lifetimes exceeding �1sec are prominent in the early Universe. Utilizing a model-independent analysis of the properties of these long-lived particles, we identify the parameter space associated with models that ...

The discrepancy on {sup 7}Li and {sup 6}Li abundances between the observational data and the standard big-bang nucleosynthesis theory prediction has been a nagging problem in astrophysics and cosmology, given the highly attractive and successful big-bang paradigm. One possible solution of this lithium problem is ...

The interior structure of the Sun can be studied with great accuracy using observations of its oscillations, similar to seismology of the Earth. Precise agreement between helioseismological measurements and predictions of theoretical solar models has been a triumph of modern astrophysics. A recent downward revision by 25-35 per cent of the solar abundances of light elements ...

Large systematic discrepancies currently exist among the carbon data reported for oceanic basalts by

We present an analysis of the s-process branching at A=176, which is determined by the two s-only isotopes 176Lu and 176Hf. This work is motivated by the discrepancy between the current theoretical expectations and solar-system abundances of the two isotopes involved in the branching. Asymptotic Giant Branch models have been calculated with the FRANEC ...

1-888-990-NOAA (1-888-990-6622) Problems, Questions, or Comments Submit an Inquiry Report a Chart, Coast Pilot, or Website Discrepancy Discrepancy Reporting Contact a...

We present integral field spectroscopy of two selected zones in the Orion nebula obtained with the Potsdam Multi-Aperture Spectrophotometer, covering the optical spectral range from 3500 to 7200 � and with a spatial resolution of 1 arcsec. The observed zones are located on the prominent Bright bar and on the brightest area at the north-east of the Orion south cloud, both containing remarkable ...

The present status of solar neutrino experiments is reviewed. The discrepancy between the experimental results and the theoretical expectations has come to be known as the Solar Neutrino Problem. Possible solutions to this problem are discussed. The next ...

This suggests that radiation processing may help explain the discrepancy between the observed gas-phase abundances of small organic molecules and ...

... Unrelated to spatial and temporal ambiguity problems, a systematic discrepancy in a summer daytime Pedersen conductance calculations from ...

... an unacceptable discrepancy rate between the diagnoses compared. The principal problem was a lack of updating of diagnosis after admittance of ...

Discrepancies between phase-shifting and white-light interferometry have been observed in step-height and surface roughness measurements. The discrepancies have a strong relation to the roughness average parameter of the surface. The skewing effect, which mainly occurs in the vicinity of peaks, valleys, and edges of the sample, causes this ...

During the last decade the abundances of heavy elements in the Sun have been revised downwards leading to serious discrepancy between solar models constructed using these abundances and the available seismic data. Much of these downward revision of abundances of Oxygen and other light elements was attributed to use ...

We present non-LTE analyses of high quality spectra for two B-type supergiants, kappa Orionis & epsilon Orionis (spectral types B0.5Ia & B0Ia respectively). We investigate the effect of including a microturbulent velocity in the Hi, Heii and Hei line broadening on the derived stellar atmospheric parameters (T_eff, log g and y). Its inclusion has a significant effect on the profiles of the ...

An analysis of the high-resolution soft X-ray spectrum of HZ 43, obtained with the 500 lines/mm transmission grating spectrometer on EXOSAT is presented, supplementing an earlier analysis (Paerels et al., 1986). It is found that a discrepancy between the total luminosity implied by the X-ray data and that calculated from the optical and UV flux is due to a ...

Examined how elementary students in three classes using different teaching strategies, presented with discrepant event problems in science, begin the problem-solving process by exploration of the problem space. Because of the constraints imposed by each teaching strategy, none of those used was considered entirely ...

New solar abundances (Asplund etal., ARAA, 47, 522, 2009) are widely discordant with the 'standard' abundances. It has been suggested that a marginal, but significant, enahancement in stellar interior opacities might resolve the issue, which otherwise results in discrepancies of up to 50% in light elements such as C, N, O and Ne. We ...

THE DISCREPANCY OF A NEEDLE ON A CHECKERBOARD MIHAIL N. KOLOUNTZAKIS Abstract. Consider the plane as a checkerboard, with each unit square colored black or white in an arbitrary manner. We show that for any, up to a multiplicative constant. For the corresponding ``finite'' problem (N � N checkerboard) we

Results from the first dedicated study of Galactic planetary nebulae (PNe) by means of optical integral field spectroscopy with the Very Large Telescope Fibre Large Array Multi Element Spectrograph Argus integral field unit are presented. Three typical Galactic disc PNe have been mapped with the 11.5 � 7.2-arcsec2 Argus array: 2D spectral maps of the main shell of NGC5882 and of large areas of ...

Examined children whose Wechsler Intelligence Scale for Children-Revised (WISC-R) verbal and performance Intelligence Quotient discrepancies placed them beyond the 90th percentile. Longitudinal study showed 23 percent of the discrepant cases to be discrepant at two or more ages. Studied frequency of perinatal difficulties, early ...

The discrepancies in electron temperatures in photoionized nebulae, as derived from collisionally excited lines and the hydrogen Balmer jump are presented. M. Peimbert in 1971, BOTT, 6, 36, 29 was the first in determining such discrepancies for a sample of PNe. Many authors have confirmed this result in many different samples of PNe. The ...

Estimates of the chemical composition of the bulk (entire) Moon fall into two drastically different categories. One group of estimates claims that the Moon is enriched in refractory elements (those that boil at high temperatures, such as calcium and aluminum) by about 50% compared to Earth. The other group claims that the abundances of refractory elements are the same in the ...

Initial results from the WMAP satellite have constrained the cosmological baryon density with an uncertainty of 4%. We can now test our understanding of both big bang nucleosynthesis and subsequent stellar nucleosynthesis by comparing this precise result with predictions for the baryon density from abundances of light elements produced in BBN. The ...

Several lines of evidence concerning the vertical abundance profile of water in the atmosphere of Venus lead to strikingly unusual distributions (the water vapor abundance decreases sharply in the immediately vicinity of the surface) or to serious conflicts in the profiles (different infrared bands suggest water abundances that are ...

An abundance analysis of the H-deficient and He- and C-rich R Coronae Borealis (R CrB) stars has been undertaken to examine the ancestry of the stars. The investigation is based on high-resolution spectra and line-blanketed H-deficient model atmospheres. The models successfully reproduce the flux distributions and all spectral features, both molecular bands and high-excitation ...

Context. A discrepancy has emerged between the cosmic lithium abundance inferred by the WMAP satellite measurement coupled with the prediction of the standard big-bang nucleosynthesis theory, and the constant Li abundance measured in metal-poor halo dwarf stars (the so-called Spite plateau). Several models are being proposed to explain ...

A perplexing anomaly arises in the determination of abundances of common elements in gaseous nebulae, as derived from collisionally excited lines (CEL) as opposed to those from Recombination Lines (RCL). The "abundance discrepancy factors" can range from a factor of 2 to an order of magnitude or more. That has led to quite different ...

ORIGINAL PAPER Linking species abundance distributions and body size in monogenean communities-most abundant monogenean species because of discrepancies with the original description (see Hinsinger numerically dominant species and many rare species. Although this pattern is well recognised, its underlying

The analysis of stellar abundances for odd-Z Fe-peak elements requires accurate non-local thermodynamic equilibrium (NLTE) modelling of spectral lines fully taking into account the hyperfine structure (HFS) splitting of lines. Here, we investigate the statistical equilibrium of Co in the atmospheres of cool stars and the influence of NLTE and HFS on the formation of Co lines ...

Given the unit square (0,0) (0,1), (1,0), (1,1) the problem is to find coordinates for a set of N points such that a quantity called the discrepancy is minimized. The discrepancy is defined as the maximum value of absolute value of ((nu/N) - xy) over the ...

Actual-ideal discrepancies are associated with adolescent emotional distress and there is evidence that the size of discrepancies matters. However, the direction of discrepancies has not been examined, perhaps due to limitations of widely used self-discrepancy measures. Two hundred and twelve 7th, 9th and 11th ...

Actual-ideal discrepancies are associated with adolescent emotional distress and there is evidence that the size of discrepancies matters. However, the direction of discrepancies has not been examined, perhaps due to limitations of widely used self-discrepancy measures. Two hundred and twelve 7th, 9th and 11th ...

We explore a nuclear physics resolution to the discrepancy between the predicted standard big-bang nucleosynthesis (BBN) abundance of Li7 and its observational determination in metal-poor stars. The theoretical Li7 abundance is 3-4 times greater than the observational values, assuming the baryon-to-photon ratio, ?wmap, determined by ...

The present status of solar neutrino experiments is reviewed. The discrepancy between the experimental results and the theoretical expectations has come to be known as the Solar Neutrino Problem. Possible solutions to this problem are discussed. The next generation of solar neutrino experiments are described.

The problem of overprediction of neutron capture by $sup 238$U using commonly accepted resonance parameters from the ENDF/B-IV file is briefly considered. (SDF)

... tour. Her encouragement, understanding, love, patience and sense of humor were abundant and continuous throughout this ...

The relatively high volatile abundances inferred from LCROSS measurements cannot be representative of a homogeneous distribution within the Cabeus permanently shadowed region, but lateral and/or depth variations can account for the discrepancy.

In this study, we examined the internal consistency of informant discrepancies in reports of youth behavior and emotional problems and their unique relations with youth, caregiver, and family characteristics. In a heterogeneous multisite clinic sample of 420 youths (ages 11-17 years), high internal consistency estimates were observed across measures of ...

The persistent discrepancy between observations of Li7 with putative primordial origin and its abundance prediction in big bang nucleosynthesis has become a challenge for the standard cosmological and astrophysical picture. We point out that the decay of GeV-scale metastable particles X may significantly reduce the big bang nucleosynthesis value down to a ...

The helium and nitrogen en-rich-ment of the atmospheres of early B-type stars during the main sequence (MS) evolutionary phase is re-analysed. It is con-fir-med that the effect depends on both the age t and the stellar mass M. For example, the helium abundance He/H increases by 0.04 (60-70% of initial value) for stars with M=8-13 M_odot and by 0.025 (about 30%) for stars with ...

Of the light elements, the primordial abundance of deuterium relative to hydrogen, (D/H)p, provides the most sensitive diagnostic for the cosmological mass density parameter, omegaB. Recent high-redshift D/H measurements are highly discrepant, although this may reflect observational uncertainties. The larger primordial D/H values imply a low omegaB ...

This study examined the Eyberg Child Behavior Inventory (ECBI) "discrepancy hypothesis", which asserts that a discrepancy in score elevations on the ECBI Intensity and Problem Scales is related to problematic parenting styles. The Intensity Scale measures the frequency of child disruptive behavior, and the Problem ...

Since the discovery of the "Spite plateau" in 1982, lithium observations in halo stars have been used to deduce the primordial 7Li abundance. Compared with the results of Big Bang nucleosynthesis (BBN) it provided an estimate of the baryonic density of the Universe, together with the other cosmological isotopes. However, recently, the observations of the anisotropies of the ...

From models of plane-parallel radiating shock waves and the observations of Osterbrock and Dufour (1973), the abundances of oxygen, nitrogen, neon, and sulfur (and indirectly, of carbon) are derived for the Large Magellanic Cloud supernova remnant N49. These are somewhat smaller than solar values, and it is concluded that the discrepancies between these ...

By mapping the optical recombination lines of C II, C III, and C IV across the nebular surface of NGC 4361 using a long slit, the author has shown that there is no evidence for the C-rich inner zone proposed by Torres-Peimbert, Peimbert, and Pena (1990) to explain the large discrepancy between the C abundances derived from optical recombination lines and ...

Recent measurements of the the oxygen abundance in metal-poor stars have shown a discrepancies between the abundances derived from the forbidden lines at 6300 Angstoms and the permitted lines at 7772 Angstroms. The difference between methods in [O/Fe] can be a factor of several for the most metal-poor stars. Traditionally the two ...

We compare observations of the high-redshift galaxy population to the predictions of the galaxy formation model of Croton et al. and De Lucia & Blaizot. This model, implemented on the Millennium Simulation of the concordance Lambda cold dark matter cosmogony, introduces `radio mode' feedback from the central galaxies of groups and clusters in order to obtain quantitative agreement with the ...

Brown and Mallik (BM) recently claimed that non-thermal recombination (NTR) can be a dominant source of flare hard X-rays (HXRs) from hot coronal and chromospheric sources. However, major discrepancies between the thermal continua predicted by BM and by the Chianti database as well as RHESSI flare data, led us to discover substantial errors in the heuristic expression used by ...

We examined whether mother-child discrepancies in perceived child behavior problems relate to dysfunctional interactions between mother and child and stress in the mother. Participants included 239 children (6-16 years old; 58 girls, 181 boys) referred for oppositional, aggressive, and antisocial behavior, and their mothers. Mother-child ...

The measurement of the cosmic microwave background has strongly constrained the cosmological parameters of the Universe. When the measured density of baryons (ordinary matter) is combined with standard Big Bang nucleosynthesis calculations, the amounts of hydrogen, helium and lithium produced shortly after the Big Bang can be predicted with unprecedented precision. The predicted primordial lithium ...

This study examined whether intrafamily discrepancies in perceptions of the adolescent's competence and independence were associated with autonomy and well-being for adolescents and parents. The ways in which mothers and fathers consistently differed from their adolescent across measures of independence and competence regarding Type 1 diabetes, a stressful context for ...

The self-discrepancy theory argues that perceived discrepancy between one's actual self and ideal self may induce anxiety, and that this in turn may motivate people to reduce or eliminate this perceived discrepancy by changing their behaviors. Based on this theory, this study investigated how college students perceived ...

The observation of gamma rays associated with the decay of 26 Al and 60 Fe can provide important information regarding ongoing nucleosynthesis in our galaxy. The half-lives of these radioisotopes (7.2 x 10 5 y and 1.5 x 10 6 y, respectively) are long compared to the interval between synthesis events such as supernovae, so they build up in a steady state in the interstellar medium (centered on the ...

The observation of gamma rays associated with the decay of {sup 26}Al and {sup 60}Fe can provide important information regarding ongoing nucleosynthesis in our galaxy. The half-lives of these radioisotopes (7.2 x 10{sup 5} y and 1.5 x 10{sup 6} y, respectively) are long compared to the interval between synthesis events such as supernovae, so they build up in a steady state in the interstellar ...

In a multiethnic community sample of 1,170 preadolescent children, it was investigated whether discrepancies in parent-child reports of internalizing problems are related with gender, ethnic background (Dutch, Surinamese/Antillean, Moroccan, Turkish, Other) and with future internalizing problems. No significant differences in ...

b-decay studies were performed at the National Superconducting Cyclotron Laboratory. A new technique at the NSCL to measure the kinetic energy of the implanting fragments was used to distinguish charge states of the fragments in the particle identification. b-delayed neutron branchings for neutron-rich 116- 120 Rh, 120-122 Pd and 124 Ag have been measured and they are direct inputs in r-process ...

The HEAO-3 Heavy Nuclei Experiment has measured abundances of elements from Ar-18 to U-92 in the cosmic rays. The results on the ultraheavy elements, those with atomic numbers greater than 30, indicate that the source of the cosmic rays contain a mixture of r-process and s-process material similar to that found in the solar system. This result is at variance with previous ...

The semiempirical abundance table of Suess and Urey has been very helpful to nuclear physicists in determining the relative importance of various mechanisms of nucleogenesis in contributing to the natural abundances of the elements. The table was based primarily on abundance determinations in chondritic meteorites, together ...

The Cepheid Mass Discrepancy is the difference between mass predictions using stellar evolution and stellar pulsation calculations. Currently, masses from stellar pulsation are typically 10-20% smaller than those from evolution models. This problem is a challenge for the understanding of stellar evolution and pulsation. One potential solution is enhanced ...

Mis-ties at tie points of two-dimensional seismic sections bring big influence upon the interpretation accuracy of two-dimensional seismic data. People usually paid more attention to the mis-tie which results from weathering layers, but neglected that due to stack velocity discrepancy in multifold seismic data processing. This paper illustrates that stack velocity ...

One of the best known low-discrepancy sequences, used by many practitioners, is the Halton sequence. Unfortunately, there seems to exist quite some correlation between the points from the higher dimensions. A possible solution to this problem is the so-called scrambling.In this paper, we give an overview of known scrambling methods, and we propose a new ...

The problem of methodological bias in estimating ocean mortality or survival, maturity, and abundance of multireturn species of Pacific salmon (Oncorhynchus spp.) is examined heuristically with a data base for which no unbiased estimators exist. The case ...

The theoretical situation in regards to the matter-antimatter abundances in the universe is reviewed. The various approaches to the problem are discussed in some detail. (WDM)

... The problems of theory are particularly apparent, when at- tempting to examine the complicated systems having an abundance of'elements, and the ...

The thermal neutron absorption cross section for natural sulfur was measured to be 513 +- 15 mb. Any discrepancy between MnSO/sub 4/-bath and liquid scintillator measurements of /sup 252/Cf(anti ..nu..) cannot be attributed to a discrepancy in this cross section value.