cssi/SciSciGPT-SciSciNet huggingface dataset:
Perceptions: Businessmen and Business Educators.

Abstract “… literature is available and does… provide guidelines to follow in bringing about meaningful change.”
Melanoma masquerading as Spitz nevus following acute lymphoblastic leukemia.

Abstract: A malignant melanoma originally diagnosed as a Spitz nevus led to the death of a 10-year-old boy. The melanoma developed four years after therapy was begun for acute lymphoblastic leukemia. Melanomas in children are rare. Melanomas histologically resembling Spitz ncvi have been reported. Deep contiguous growth and melanization are suspicious features. Lymphoproliferative malignancies are most commonly reported to occur in patients surviving treatment for acute lymphoblastic leukemia. Melanoma following acute lymphoblastic leukemia has not been described previously.
Recurrent Stroke as a Presenting Symptom of HIV-Associated Moyamoya Syndrome: Case Report (P05.242)

Objective: To report a case of a recurrent stroke as a presenting symptom of a newly diagnosed HIV-associated MMS. Background There is increasing evidence that HIV infection is a risk factor of stroke. Moyamoya syndrome (MMS) is a progressive vasculopathy affecting the circle of Willis with collateral development. There are only four case reports of HIV associated MMS stroke. However, no recurrent strokes caused by newly diagnosed HIV associated MMS has been previously reported. Design/Methods: Case report. Results: A 35 year old African American male with past medical history of stroke and vertebral artery occlusion presented with acute onset of left facial droop, left hemiparesis and hemisensory loss, left sided neglect and right gaze preference. MRI showed a large right MCA territory infarct and MRA showed age indeterminant right vertebral artery occlusion at the origin, and right MCA occlusion. Subsequent cerebral angiogram revealed right MCA long segment stenosis with increased lenticulostriate proliferation consistent with early stages of MMS. On admission, his platelets count was 45, and thrombocytopenia evaluation revealed HIV (ELISA and WB positive,CD4+ count-137 and viral load -161,674). Further studies including CSF, echocardiogram, lipid panel, HgA1c, hypercoagulable and vasculitis workup were unremarkable. It is most likely that his previous stroke and vertebral artery stump occlusion was due to HIV vasculopathy. Conclusions: Recurrent stroke due to MMS could be the first presenting symptom of HIV. This case report underlines importance of Brain Attack Coalition recent revision recommending HIV testing for all stroke patients admitted to the Primary Stroke Centers. Disclosure: Dr. Alqadi has nothing to disclose. Dr. Nadareishvili has nothing to disclose. Dr. Jadhav has nothing to disclose. Dr. Burger has nothing to disclose. Dr. Khaldi has nothing to disclose. Dr. Feinberg has nothing to disclose.
Vibrational properties of straight dislocations in bcc and fcc metals within the harmonic approximation

We calculate the vibrational spectra of straight screw and edge dislocations in several body-centered cubic (bcc) (Mo and Fe) and face-centered cubic (fcc) (Cu and Al) metals within the harmonic approximation. We take advantage of the translational symmetry of straight dislocations to efficiently calculate their phonon eigenstates in the harmonic limit. This allows us to calculate the low-temperature contribution of straight screw and edge dislocations to the heat capacity of each respective metal, and show that the dominant temperature dependence below 5 K is linear. Comparison with heat capacity measurements of heavily cold-worked Cu reveals very good agreement with our calculations. At higher temperatures, the contribution from the non-linear terms becomes significant. As a result, maxima in the straight dislocation heat capacities are observed in the temperature range from 9% to 16% of the Debye temperature. We investigate the appearance of localized and resonance peaks in the vibrational spectra indu...
The spatial ecology of deer–vehicle collisions

Abstract Deer–vehicle collisions (DVCs) are a constant problem in North America that cost millions of dollars of damage and loss of human life. This study investigated the spatial relationship of DVCs for a county in western Indiana using nearest neighbor analysis, chi-square test of independence, and a landscape metric: the percentage of like adjacencies. The study was able to show that DVCs are not randomly located, and that habitat type and structure may play an important role in the location of DVCs.
The strength of magnetic exchange in compounds TbFe2, TbFe3 and Tb2Fe17 with aluminum substitution for iron

Magnetic ordering temperatures in homogeneous compounds based on Tb2Fe17 (i.e., Tb0.105FezAl0.895−z) and on TbFe3 (i.e., Tb0.25FezAl0.75−z), with Al substitution for Fe, increase to peak around an Fe concentration of about z = 0.70. Homogeneous Al substitution for Fe in TbFe2 (i.e., Tb0.333FezAl0.667−z) produces a linear decline of ordering temperature with a minimum at Al-rich compositions. A maximum in ordering temperature around an Fe concentration with z = 0.70 appears to be a rule in intermetallic compounds of Fe with trivalent metals.
Studies on the mechanism of cytotoxicity of 3-deazaguanosine in human cancer cells

The mechanism of toxicity of 3-deazaguanosine was studied in a number of human tumor cell lines by determination of the effects of various purine compounds on the growth of the cells in the presence of the drug and by studies of the effects of 3-deazaguanosine on the metabolism of radiolabeled precursors in these cells. The drug was found to be toxic to all of the cell lines tested. The toxicity was reversible with removal of the drug. None of the purine bases tested could restore normal growth after 48h exposure to 3-deazaguanosine; the bases were more effective in preventing cytotoxicity when added simultaneously with the drug. Metabolic studies indicated decreased synthesis of DNA, variable inhibition of de novo purine synthesis, and complete inhibition of the enzyme guanosine monophosphate reductase by 3-deazaguanosine.
Sequencing the human genome.

The title of the report by R. Myerowitz and N. Hogikyan on page 1646 of the issue of 27 June was incorrect. It should have been "Different mutations in Ashkenazi Jews and non-Jewish French Canadians with Tay-Sachs disease."
A real-time smartphone- and smartshoe-based fall prevention system

Accidental falls among elderly people can have massive social and economic impacts and dramatic health consequences. In the year 2025 the elderly are projected to account for 15% of the total population. For people 70--75 years old, the estimated incidence of falls is over 30% per year [1]. Current research has been focused on fall detection systems, which do not adequately provide safety for elderly individuals prone to falls. The area of fall prevention is still understudied.
Bone marrow necrosis preceding acute lymphoblastic leukemia in childhood.

Deux malades qui ont presente une necrose de la moelle osseuse et finalement une leucemie lymphocytaire aigue sont decrits et les cas similaires de la litterature sont revus. Les 2 malades ont repondu a la chimiotherapie. Plusieurs mecanismes possibles sont discutes. La necrose de la moelle osseuse semble etre une autre affection precedant la leucemie lymphocytaire aigue chez les enfants
Photon diffusion on the velocity sphere

The concept of photon diffusion on the velocity sphere and the non-Euclidean diffusion equation (NED) are introduced to describe photon migration in highly forward-scattering random media. The NED covers the ballistic, transient, and developed diffusion modes of photon migration in random media. An approximate analytic solution to the NED is presented.
The use of Odors at Different Spatial Scales: Comparing Birds with Fish

Salmon travel hundreds of kilometers of open ocean and meandering rivers to return to their natal stream to spawn; procellariiform seabirds soar over thousands of kilometers of the ocean’s surface searching for foraging opportunities and accurately return to their nesting islands. These large-scale olfactory-guided behaviors are among the most dramatic examples of animal navigation ever described. At much closer ranges, the sense of smell can be used for behaviors as diverse as tracking prey, nest location, and mate selection. Both fish and birds face similar problems interpreting olfactory information in fluid mediums where odors are dispersed as filamentous patches. Similar to insects, which have served as model organisms for investigating olfactory related behaviors, the few fish and bird species that have been studied tend to use olfactory information in conjunction with other sensory modalities. Similar to insects, fish and birds also employ oscillatory or cross-stream movement as sampling mechanisms. This review compares and contrasts the use of odors by fish and birds over a range of spatial scales that span from thousands of kilometers to less than a meter. In so doing, we identify behavioral similarities and new questions that need to be addressed regarding the olfactory ecology of these diverse groups of organisms.
Axon reflexes in axolotl limbs: evidence that branched motor axons reinnervate muscles selectively.

Abstract Numerous axon reflexes were found in grafted forelimbs, regenerated forelimbs, and forelimbs with regenerated nerves in the axolotl Ambystoma mexicanum. They were not seen in normal limbs. Each reflex was due to a single motor axon which branched, generally at a point central to the limb. In most cases several consecutive electrical stimuli were necessary to cause a visible contraction or a muscle action potential in the motor units concerned. I observed a total of 13 axon reflexes between the supernumerary limb and the ipsilateral host limb. All but one could be stimulated in either direction. In other animals I demonstrated 13 axon reflexes by cutting a small nerve in the distal limb and stimulating its proximal stump. In at least five, and possibly as many as 14 of these 26 axon reflexes, the two muscles involved were synonymous. In 20 of the 26, the muscles involved were situated in the same limb region and were synergistic or synonymous. Only in five axon reflexes were the muscles in widely different parts of the limb and clearly unrelated in function. Random innervation or mechanical guidance alone cannot account for these muscle-specific axon reflexes. Axon branches innervated muscles selectively, although the mechanism remains unclear. The selectivity was not perfect, though, because axon reflexes between dissimilar muscles did occur occasionally. Although it has been proposed that an axon may remain in an inappropriate muscle but be functionally “repressed,” no evidence of such repressed synapses was found.
Fullerene concentration dependent bimolecular recombination in organic photovoltaic films

Organic photovoltaic devices made of a solution processed small molecule and a fullerene show a decrease in short circuit current with decreasing fullerene amounts. Transient absorption experiments show that the rate of bimolecular recombination increases as the system is deprived of fullerene. A simple expression for the bimolecular recombination coefficient derived by accounting for intrinsic carrier generation reproduces the observed behavior.
The effect of sample size and variability of data on the comparative performance of artificial neural networks and regression

This research explores the robustness of simple linear regression and artificial neural networks with respect to varying sample size and variance of the error term by comparing their predictive abilities. The comparison is made using the root mean square difference between the predicted output from each technique and the actual output.
Pseudointercondylar notch sign: manifestation of osteochondritis dissecans of the trochlea

Osteochondritis dissecans (OCD) is an idiopathic condition affecting the articular epiphysis. Initially described in the knee, this entity affects several other parts of the body such as the talar dome, tarsal navicular, and femoral capital epiphysis. OCD of the elbow primarily involves the capitellum. OCD involving the trochlea has rarely been reported. We describe an unusual and interesting case of OCD affecting the trochlea, mimicking a pseudointercondylar notch.
Fatty acid biosynthesis in the developing endosperm ofCocos nucifera

Endosperm tissue of developing coconut endosperm incorporated [14C] acetate and [14C]-malonate into [14C]C8-C18 fatty acids. The distribution of [14C] label into the various fatty acids mimicked the distribution of endogenous fatty acids at early and middle stages of endosperm development. Although [14C] C8-C18 fatty acids were taken up rapidly by endosperm tissue slices, no elongation occurred; [14C] stearic acid was not desaturated to oleic. Cell free preparations have also been obtained from this tissue that readily incorporated [14C] malonyl-CoA into a range of [14C] fatty acids in the presence of ACP and NADH at pH 7.0. Employing this system, a number of experiments were designed to determine the mechanism of chain length termination. In contrast to intact tissue slice experiments, cell-free extracts yielded as principal products palmitic and stearic acid, although up to 20% were shorter chain acids. A number of possible mechanisms for chain length termination were proposed and tested.
On the Transverse Vibration of Beams of Rectangular Cross-Section

On utilise une solution exacte pour les frequences propres de vibration de poutres libres, comme base de comparaison de la theorie des poutres de Timoshenko et d'une approximation de contraintes planes developpee ici
Broadband dielectric relaxation study at ambient and elevated pressure of molecular dynamics of pharmaceutical: indomethacin.

Broadband dielectric measurements on the pharmaceutical indomethacin (IMC) were performed at ambient and elevated pressure. Data on molecular dynamics collected at ambient pressure are in good agreement with that published in the literature. In the glassy state, there is a well-resolved secondary relaxation with Arrhenius activation energy Ea = 38 kJ/mol. This commonly observed relaxation process (labeled γ) is of intramolecular origin because it is pressure-insensitive. Closer analysis of the ambient pressure dielectric spectra obtained in the vicinity of the Tg indicated the presence of one more secondary relaxation (β), which is slower than that commonly observed. Application of the CM predictions enabled us to classify it as a true JG relaxation. Pressure measurements confirmed our supposition concerning the origins of the two secondary relaxations in IMC. Moreover, we have found that IMC under pressure does not crystallize, even at very high temperatures of T ≥ 372 K. This finding was discussed in th...
Cell Membrane Orientation Visualized by Polarized Total Internal Reflection Fluorescence

In living cells, variations in membrane orientation occur both in easily imaged large-scale morphological features, and also in less visualizable submicroscopic regions of activity such as endocytosis, exocytosis, and cell surface ruffling. A fluorescence microscopic method is introduced here to visualize such regions. The method is based on fluorescence of an oriented membrane probe excited by a polarized evanescent field created by total internal reflection (TIR) illumination. The fluorescent carbocyanine dye diI-C(18)-(3) (diI) has previously been shown to embed in the lipid bilayer of cell membranes with its transition dipoles oriented nearly in the plane of the membrane. The membrane-embedded diI near the cell-substrate interface can be fluorescently excited by evanescent field light polarized either perpendicular or parallel to the plane of the substrate coverslip. The excitation efficiency from each polarization depends on the membrane orientation, and thus the ratio of the observed fluorescence excited by these two polarizations vividly shows regions of microscopic and submicroscopic curvature of the membrane, and also gives information regarding the fraction of unoriented diI in the membrane. Both a theoretical background and experimental verification of the technique is presented for samples of 1) oriented diI in model lipid bilayer membranes, erythrocytes, and macrophages; and 2) randomly oriented fluorophores in rhodamine-labeled serum albumin adsorbed to glass, in rhodamine dextran solution, and in rhodamine dextran-loaded macrophages. Sequential digital images of the polarized TIR fluorescence ratios show spatially-resolved time-course maps of membrane orientations on diI-labeled macrophages from which low visibility membrane structures can be identified and quantified. To sharpen and contrast-enhance the TIR images, we deconvoluted them with an experimentally measured point spread function. Image deconvolution is especially effective and fast in our application because fluorescence in TIR emanates from a single focal plane.
Mineralogy and temporal relations of coexisting authigenic minerals in altered silicic tuffs and their utility as potential low-temperature dateable minerals

Abstract Coexisting fine-grained (0.1–20 μm) authigenic silicate minerals separated from altered tuffs in Miocene and Plio-Pleistocene lacustrine deposits were characterized petrographically and using X-ray powder diffraction. The authigenic minerals are dominated by clinoptilolite, erionite, phillipsite, K-feldspar, silica, calcite, smectite, and randomly interstratified illite/smectite. Minor accessories of opal-CT, cristobalite, and barite are present with the major alteration minerals. Authigenic minerals from altered tuffs were dated using the K Ar method to evaluate the utility of these minerals for determining the time of alteration in low-temperature diagenetic environments. The eruption ages of some of these zeolite-rich tuffs were determined using the 40 Ar 39 Ar method on single sanidine and plagioclase minerals. The K Ar isotopic ages of the fine-grained K-feldspar show minimal variation compared with results from the clinoptilolite separates. The isotopic ages from the authigenic K-feldspar (15-13.8 Ma) and some of the zeolites (16.-6.7 Ma) are similar to the eruption ages of the tuffs and indicate early alteration. Despite their open-framework structure, zeolites apparently can retain part or all of their radiogenic argon under favorable conditions (e.g., saturated environment). How much of the radiogenic argon is retained is estimated from the isotopic ages of other coexisting secondary minerals that are commonly dated by the K Ar method. Although zeolite isotopic ages should be interpreted with caution, they may be useful to constrain temporal relations of low-temperature diagenetic processes when used in conjunction with other dateable minerals.
Magnetic resonance imaging of thehand and wrist

Abstract The application of magnetic resonance imaging (MRI) to the hand and wrist has lagged behind its use in larger joints. Recent advances in hardware and software technology have allowed faster imaging with excellent anatomic resolution. After routine radiography, MRI is the imaging procedure of choice for evaluation of chronic wrist pain. The most common indications for MRI within the hand and wrist include scapholunate-lunate ligament tears, triangular fibrocartilage complex (TFCC) tears, avascular necrosis, and soft tissue masses. MRI may occasionally help evaluate tendon abnormalities, atypical or postoperative recurrent carpal tunnel syndrome, and complications of inflammatory arthritides. Future applications of MRI will likely include improved anatomic imaging of smaller structures such as the lunatotriquetral ligament and the extrinsic ligaments, as well as MR angiography (MRA).
Conway Numbers and Iteration Theory

Conway (“On Numbers and Games,” Academic Press, New York, 1976) has given an inductive procedure for generating the real numbers that extends in a natural way to a new class of numbers called the surreals. The number 0 is defined at the first step in terms of a pair of empty sets. At step 1, the number 1 and its negative are generated, giving the set {1,0,?1}; at step 2, the numbers 2,1/2 and their negatives are generated, giving the set {2,1,1/2,0,?1/2,?1,?2}; at step 3, the numbers 3,3/2,3/4,1/4 and their negatives are generated, giving the set {3,2,3/2,1,3/4,1/2,1/4,0,?1/4,?1/2,?3/4,?1,?3/2,?2,?3}, etc. It is shown that these numbers are generated in one-to-one correspondence with certain sequences of positive and negative sequences of integers: At step 0, the sequence (0) is introduced; at step 1, the sequence (1) and its negative (?1) are generated, giving the set {(1),(0),(?1)}; at step 2, the sequences (2),(1,1) and their negatives (?2),(?1,?1) are generated, giving the set {(2),(1),(1,1),(0),(?1,?1),(?1),(?2)}; at step 3, the sequences (3),(2,1),(1,1,1),(1,2) and their negatives (?3),(?2,?1),(?1,?1,?1),(?1,?2) are generated, giving the set {(3),(2),(2,1),(1),(1,1,1),(1,1),(1,2),(0),(?1,?2),(?1,?1),(?1,?1,?1),(?1),(?2,?1),(?2),(?3)}, etc. This generation of sequences in not ad hoc. The positive and negative sequences given here, and their generalizations, arise in iteration theory and in the theory of words associated with that theory. There is a natural order relation on these sequences that is one-to-one with the Conway numbers and which is rooted in the ordering of the inverse functions that arise in the description of the graph inverse to thenth iterate of certain classes of maps of an interval. A simple transformation of the points occurring in the cycles of thenth iterate of the trapezodal map of the interval 0,2 forn=1,2,? give all the dyadic Conway numbers, in one-to-one correspondence with sequences, and the inclusion of infinite iterates yields all the reals. The implication of this result is that all such Conway numbers arise as fixed points of the trapezodal map, one-to-one with the sequences that label uniquely these fixed points. However, because of certain “universality” properties, the sequences themselves have application to and significance for other maps of the interval. The various aspects of iteration theory and its relation to the subset of real Conway numbers are discussed in some detail. The question of whether the surreal Conway numbers have application to iteration theory, hence, possibly to chaos, is left open.
Restoration of tracheal mucosa and ciliary particle transport activity after mechanical denudation in the chicken.

Abstract A new technique was developed to study the regeneration of respiratory epithelium in situ. The restoration of the epithelium of mechanically denuded chicken tracheas was characterized by measurements of ciliary particle transport activity and by counting ciliated cells, mucous cells and mucous glands. Results show that although more than 90% of the epithelial cells were destroyed as a result of the mechanical denudation process, most of the restoration of ciliary function and regeneration of the epithelium in the chicken occurred by 14 days. Complete restoration of the epithelium to the predenudation condition occurred before 29 days. This method, we believe, will be of value in studying the effects of potentially toxic or beneficial agents in the form of dusts, gases, aerosols and drugs on replacement of respiratory epithelium. In addition, the impairment of pulmonary clearance, together with the presence of large numbers of cells in an active phase of cellular division, may provide a milieu for the study of carcinogenesis induced or influenced by airborne chemical agents.
The Association Between the Legal and Financial Reporting Environments and Forecast Performance of Individual Analysts

We test the ability of analyst characteristics to explain relative forecast accuracy across legal origins (common law versus civil law). Common law countries generally have more effective corporate governance mechanisms, including stronger investor protection laws and inputs provided through higher-quality financial reporting systems. In this type of environment, investors are more willing to compete for superior investment decisions because they expect to be equitably rewarded, and investors are more likely to demand information about accounting earnings because earnings have more value relevance. The increased demand by investors for earnings information increases the economic incentives of analysts to provide more accurate earnings forecasts. We predict that analysts with superior ability and resources in common law countries will more consistently outperform their peers because appropriate market-based incentives exist. In civil law countries, where the demand for earnings information is reduced because of weaker corporate governance mechanisms and lower-quality financial reporting, we predict that analysts with superior ability will less consistently provide superior forecasts. Results are consistent with our expectations and suggest an association between legal and financial reporting environments and analysts' forecast behavior.
Sleep-wake states ub transgenic mouse models overexpressing the human β-amyloid precursor protein

Studies testing the amyloid hypothesis and recent advances in mouse molecular genetic technologies have played a critical role in improving our understanding of Alzheimer's disease (AD). Mouse models of AD currently available show only some of the characteristic neuropathology in human AD. Studies have demonstrated, however, that these models are excellent tools for characterizing different aspects of the molecular pathology of AD and the neurobiological basis for the clinical heterogeneity in AD. The present discussion focuses on behavioral and physiological data obtained in transgenic (Tg) mice overexpressing the mutant human beta-amyloid precursor protein (hbetaAPP). This mouse model exhibits memory and neurophysiological deficits at ages preceding amyloid-beta-peptide (Abeta) plaque formation that worsened with age and Abeta plaque formation. In spite of these findings, very little emphasis has been placed on characterizing the neurobiological basis of the diverse neuropsychiatric symptoms that are also observed in AD, including sleep disturbances. Taking into consideration the relationship between memory processes and sleep, the use of animal models of AD as a preclinical bioassay has the potential to characterize the neural substrates mediating clinical manifestations of AD, such as sleep-wake states, and contribute to the development of treatments for early stages of AD.
Enhanced squeezing in the transmitted fields in parametric oscillation with injected squeezed light at the pump frequency

A degenerate parametric oscillator operating above threshold is studied when the cavity is injected by a broadband squeezed light at the pump frequency. Using the solution of the quantum Langevin equations for the signal and pump modes, we have studied the quantum fluctuations in the intracavity and transmitted field quadratures for the signal and pump modes. For the intracavity modes we studied the variance in the field quadratures, and for the transmitted modes we studied the spectra for the variance in the squeezed quadratures. Our results have revealed that the same relative cavity damping rates between the signal and the pump modes that predict enhanced squeezing in the intracavity do not necessarily predict enhanced squeezing in the transmitted modes.
A bargaining model and empirical analysis of strike activity across industries

This study extends the analysis on the inter-industry propensity to strike found in Leigh (1983) by (1) developing a more elaborate model, (2) developing proxies for all the parameters of the model, and (3) testing the modified model on two new data sets. The results suggest that strikes are more frequent in hazardous industries employing few women and where the average level of schooling is low. In addition, the evidence suggests strikes and wages may be simultaneously determined.
Equestrian Imagery in European and American Political Thought: Toward an Understanding of Symbols as Political Texts

TjHE Marxist critic Frederic Jameson recently (1981) argued that the interpretive apparatus used to study literary texts must be political. In the study of political theory, I propose to reverse this formulation by arguing for the priority of literary interpretations of political texts. To say that political theory needs to be studied from a more literary perspective is to suggest that its language must be confronted metaphorically and symbolically. The literary treatment of political texts returns the study of political theory, political language, and politics itself, to their origins and foundations in everyday life and discourse. Fundamentally, it returns them to the body and its experiences to what Marxists have understood in terms of necessity, Freudians in terms of desire, post-structuralists in terms of power, and cultural anthropologists in terms of ritual and representation.' The body, and the terms by which we seek either to live within or outside of it, provide the basic set of symbolic referents for understanding our status as political creatures. In this paper, I argue that symbolic language returns the study of politics to its bodily foundations. I aim to do so through a detailed examination of equestrian imagery in European and American political thought. My specific focus is on England during the seventeenth century. While the primary concerns of this essay are historical and interpretive, I also address the methodological implications of a literary approach to the study of political theory. The consequences of this approach are manifold, not the least of them being its subversive impact upon the analytic and historicist methods that have predominated within the Anglo-American tradition of political theory. The historical significance of equestrian themes relates to what Simone de Beauvoir has termed the male desire "to assert transcendence over
Chemical modifications accompanying blueschist facies metamorphism of Franciscan conglomerates, Diablo Range, California

Abstract As part of an investigation of blueschist-facies mineral parageneses in pebbles and matrix of some Franciscan metaconglomerates of the Diablo Range, California, textural and major-element chemical analyses were conducted on a number of igneous pebbles that comprise a range of rock types from granite and dacite to gabbro and basalt. Compositions of the igneous pebbles differ significantly from common igneous rocks, particularly with respect to Ca, K, Na, Si and H 2 O. The SiO 2 and H 2 O contents are characteristically high and the K 2 O contents low. The CaO and Na 2 O contents may be relatively enriched or reduced in different pebbles. The igneous pebbles show little evidence of alteration prior to their incorporation into the Franciscan conglomerates, and the chemical modifications are considered to have been produced during metamorphism of the conglomerates to (lawsonite + albite + aragonite ± jadeite)-bearing assemblages. The observed variations in the pebbles are shown to be functions of: (1) bulk chemistry; (2) the igneous mineral assemblage; (3) the stable metamorphic mineral assemblage; and (4) the composition of pore fluids in the conglomerates. The relative proportions of Mg and Fe in most of the pebbles apparently have been unaffected by the metamorphism, and these parameters, along with other textural and chemical factors, were used to determine the petrogenetic affinities of the igneous pebbles. The plutonic and most of the volcanic pebbles correspond to calc-alkaline rock series, whereas a few volcanic pebbles show apparent Fe-enrichment characteristic of tholeiitic rocks. A continental margin arc—batholith complex would be the best source for these igneous detrital assemblages. Conglomerates in local areas differ in igneous lithologies from conglomerates in other areas and probably differ somewhat in age, perhaps reflecting varying degrees of unroofing of such a complex during deposition of Franciscan sediments.
Self-orthogonal codes with distance four are not rigid

Abstract We prove that a binary self-orthogonal code with minimum distance four cannot have trivial automorphism group. We also construct a self-orthogonal code of minimum distance six which has trivial automorphism group.
Endorectal magnetic resonance imaging for predicting pathologic T3 disease in Gleason score 7 prostate cancer: Implications for prostate brachytherapy

Abstract Purpose To determine the ability of endorectal magnetic resonance imaging (erMRI) and other pretreatment factors to predict the presence and extent of extraprostatic extension (EPE) in men with Gleason score (GS) 7 prostate cancer. Methods and Materials We included patients with clinical stage T1c–T2c, GS = 7 (3 + 4 or 4 + 3), and prostate-specific antigen (PSA) Results One hundred seventy-one men were eligible for inclusion. Pretreatment characteristics were: median age = 60 years (42–76); median PSA 4.9 ng/mL (0.4–9.9); GS 3 + 4 = 61%; T1c = 51%; T2a = 25%; T2b = 21%; T2c = 3%; ≥50% positive cores = 46%; EPE-positive (EPE+) erMRI = 28%. Thirty-three percent had pathologic EPE. Increasing T-stage ( p p p = 0.14), percentage of positive core biopsies ( p = 0.15), and pretreatment PSA ( p = 0.41) were not. Median EPE distance was 1.75 mm (range, 5 mm and EPE >3 mm were 11% and 15%, respectively. The odds ratios for erMRI detection of any EPE and of EPE >5 mm were 3.06 and 3.75, respectively. Conclusions T-stage and EPE+ erMRI predict pathologic EPE in men with GS 7 prostate cancer. The ability of erMRI to detect EPE increases with increasing EPE distance. These findings may be useful in patient selection for prostate brachytherapy monotherapy.
From the Great Recession to Greater Gender Equality? Family Mobility and the Intersection of Race, Class, and Gender

In the early stages of the recent recession, men were disproportionately among the ranks of the unemployed. Current economic times provide a researchable moment, as more women are likely to be in positions of power vis-a-vis earnings. This article uses a unique nationally representative dataset of married individuals (n = 158) to examine expected level of support for relocation if the respondent's spouse were offered a hypothetical job opportunity. Although there do appear to be gender differences in the associations between background characteristics and expected level of support, we find no basis for our hypotheses about the nature of the relationships between race, class, and expected level of support. Black women have higher levels of expected support than do White women, whereas Black men have lower levels of expected support than do White men; there are no class differences in expected level of support. We interpret these findings in the context of the complicated performance of gender in challengin...
Nurses' beliefs about family presence during resuscitation.

Abstract The purpose of this descriptive qualitative study was to explore the beliefs and experiences of RNs about family presence (FP) during cardiopulmonary resuscitation. Ten RNs with a minimum of 4 years of clinical experience working in diverse acute care units provided data for the study. Data were analyzed using the constant comparative method. Four themes emerged: (a) the conditions under which FP is an option; (b) using FP to force decision making; (c) staff's feelings of “being watched”; and (d) the impact of FP on a family. Because FP is not traditionally practiced, it may not be a consideration unless brought to the attention of administration by nursing staff committed to changing their policy.
Effect of trypsin treatment on Mg-activated actomyosin ATPase activity in different types of skeletal muscle fibers

Summary Mg-activated ATPase of natural actomyosin prepared from guinea pig skeletal muscle was determined after the preincubation with trypsin. The ATPase activity of the white vastus (composed predominately of fast-twitch white fibers) was greatly activated by a few minutes of preincubation, as was that of the red vastus which is composed predominately of fast-twitch red fibers. However, the ATPase of the soleus and the semimembranosus proprius (composed exclusively of slow-twitch intermediate fibers) was never activated by the trypsin treatment. The activation was not observed in desensitized actomyosin. The data suggest differences in the thin filament components of different types of skeletal muscle.
Interdefect elastic interaction in glass fiber and the theory of tunneling systems.

In a thin fiber of radius R, the long-range elastic dipolar interaction between two dipoles at a distance r from each other is modified from V\ensuremath{\propto}1/${r}^{3}$ to V\ensuremath{\propto}exp(-r/R). This offers opportunities to test the recent theory of tunneling systems in glasses based on the long-range interdefect interactions. Several possible experiments are proposed.
Ability of 1-methyltetrazole-5-thiol with microsomal activation to inhibit aldehyde dehydrogenase.

Abstract Antibiotics that contain the 1-methyltetrazole-5-thiol (MTT) leaving group are associated with an adverse effect when alcohol is ingested after their administration. Therefore, the ability of MTT to inhibit an enzyme in alcohol metabolism, aldehyde dehydrogenase (ALDH), was examined. In the absence of microsomes, MTT did not inhibit ALDH obtained from either yeast or rat liver. In the presence of rat hepatic microsomes, MTT was able to inhibit the enzyme from both sources. The characteristics of the inhibition were studied, using the yeast enzyme, and found to be dependent upon the length of incubation with the hepatic microsomes and upon the concentration of MTT. Inhibition required the presence of NADH and was not detected if the microsomes were heat treated. Dilution did not reverse the inhibition. Intact antibiotics which contain the MTT moiety did not cause an inhibition of yeast ALDH unless the antibiotics were first treated with potassium hydroxide and then incubated with microsomes. Inhibition of ALDH activity measured in the mitochondrial plus microsomal fractions of rat liver also required NADH and was prevented by glutathione and heat treatment of the microsomes. These results indicate that microsomal activation of MTT is necessary for inhibition of aldehyde dehydrogenase. The behavior of MTT described here may explain the adverse effect observed if alcohol is ingested following administration of MIT-containing antibiotics.
Frida Kahlo: realistic reproductive images in the early twentieth century.

she isthe ﬁrst Western artist to include anatomically correct in-terpretations of reproduction within her art, including mito-sis, fertilization, pregnancy, and lactation. Combining ex-pertise in obstetrics and art history, we have analyzed thereferences to human reproduction within the work of FridaKahlo.Kahlo had a remarkable knowledge of medicine, havingcompleted premedical studies at the National PreparatorySchool in Mexico City. At 18 years of age she was involvedin a streetcar accident. A metal handrail perforated herabdomen, exiting through her vagina; additional injuriesincluded pelvic, vertebral, and foot fractures.
Quinuclidine Chemistry: Autocondensation Reactions of 3-Quinuclidinone

During the synthesis of 3-hydroxy-3-ethinylquinuclidine (I), two additional products were isolated and identified as (E)-3-[2- (3-oxoquinuclidine)]quinuclidylidene (III) and (E)-3-[2-(3-hydroxy- 3-ethinylquinuclidine)]quinuclidylidene (V). The base-catalyzed autocondensation of 3-quinuclidinone resulted in the α,β-unsaturated ketone dimer (III) as a single isomer. The geometric configuration was deduced by examination of the NMR spectra of the methyl iodide salt. Compound V was thus the result of attack on the carbonyl carbon of III by the acetylide anion. The isolation and identification of these compounds clarified the reported differences in the physical properties of I and its analogs.
The Effect of Disclosures by Management, Analysts, and Financial Press on Cost of Capital, Return Volatility, and Analyst Forecasts: A Study Using Content Analysis

We document systematic evidence of risk effects of disclosures culled from a virtually exhaustive set of sources from the print medium. We content analyze more than 100,000 disclosure reports by management, analysts, and news reporters (i.e., financial press) in constructing firm-specific disclosure measures that are quantitative and amenable to replication in future. We expect credibility and timeliness differences in the disclosures by source, which would translate into differential cost of capital effects. We find that when content analysis indicates favorable disclosures, the firm's risk as proxied for by the cost of capital, stock return volatility, and analyst forecast dispersion decline significantly. In contrast, unfavorable disclosures are accompanied by significant increases in risk measures. Analysis of disclosures by source - corporations, analysts, and the financial press - reveals that negative disclosures from financial press sources result in increased cost of capital and return volatility, and favorable reports from financial press reduce the cost of capital and return volatility.
TRANSFORMATIONAL LEADERSHIP AND THE USE OF NORMATIVE PUBLIC VALUES: CAN EMPLOYEES BE INSPIRED TO SERVE LARGER PUBLIC PURPOSES?

This article asks whether and how transformational leadership in the public sector can influence the use of normative public values in organizational decisions. We focus on transformational leadership's influence on three core normative public values (representation, equity, and individual rights). The extent to which public organizations and their employees emphasize normative public values in their decision-making can signal important messages to external stakeholders about respect for and responsiveness to all citizens, valuing citizens from different walks of life equally, and respect for constitutionally guaranteed rights. We propose a model in which transformational leadership has a direct influence (infusing) and an indirect influence (convincing others) on employee use of public values in organizational decision-making. Empirical tests provide support for the proposed model, with the indirect influence (convincing others) providing a stronger impetus. The article concludes with a discussion of the results and implications.
Shift-invariant sparse representation of images using learned dictionaries

Sparse approximations that are evaluated using over complete learned dictionaries are useful in many image processing applications such as compression, denoising and feature extraction. Incorporating shift invariance into sparse representation of images can improve sparsity while providing a good approximation. The K-SVD algorithm adapts the dictionary based on a set of training examples, without shift invariance constraints. This paper presents two algorithms for training dictionaries and evaluating shift-invariant sparse representations for image data. One is a modified version of the K-SVD algorithm and the other is a novel graph-based algorithm that adapts the dictionary and computes representations using a low complexity reconstruction procedure.
The subnuclear localization of tRNA ligase in yeast

Yeast tRNA ligase is an enzyme required for tRNA splicing. A study by indirect immune fluorescence shows that this enzyme is localized in the cell nucleus. At higher resolution, studies using indirect immune electron microscopy show this nuclear location to be primarily at the inner membrane of the nuclear envelope, most likely at the nuclear pore. There is a more diffuse, secondary location of ligase in a region of the nucleoplasm within 300 nm of the nuclear envelope. When the amount of ligase in the cell is increased, nuclear staining increases but staining of the nuclear envelope remains constant. This experiment indicates that there are a limited number of ligase sites at the nuclear envelope. Since the other tRNA splicing component, the endonuclease, has the characteristics of an integral membrane protein, we hypothesize that it constitutes the site for the interaction of ligase with the nuclear envelope.
Performance comparison of a fuel cell-battery hybrid powertrain and a fuel cell ultracapacitor hybrid powertrain

This paper studies two hybrid power systems for vehicle applications: a fuel cell-battery hybrid powertrain and a fuel cell-ultracapacitor hybrid powertrain. First, the characteristics of fuel cell, battery, and ultracapacitor as power sources are summarized. Then the configurations of the two types of hybrid fuel cell powertrains are presented. Finally, example hybrid powertrains are designed and simulated using ADVISOR. The simulation results indicate that ultracapacitors can more effectively assist the fuel cell to meet the vehicle power demand and help achieve a better performance and a higher fuel economy.
Use of Social Media to Communicate Sport Science Research

Scientists and coaches acknowledge that an information gap exists between research and practice. Communication barriers hinder applying research findings in a timely manner. This investigation examined the usefulness of social media to communicate sport science research. A Facebook fan page and a website dedicated to translating soccer-related research (Science of Soccer Online, SSO) were established. T he Facebook fan page accounted for the largest number referrals to the SSO website. Those accessing SSO via Facebook spent nearly 5 min on the site and viewed 1-2 articles per visit. A survey about the usefulness of the Facebook indicated that most respondents noticed and utilized links posted on the Facebook fan page. Survey participants also indicated that they used the fan page to access the SSO website. The results suggest a Facebook fan page that provides links to practical scientific information is a potentially useful means of communicating sport science to practitioners.
TOTAL THYROIDECTOMY IN DIABETES MELLITUS

The patient in the following case volunteered to undergo total thyroidectomy. The operation was undertaken with the hope of securing thereby some improvement of his diabetes. His basal metabolic rate was normal beforehand, and there were no symptoms or signs of hyperthyroidism. He fully understood the hazards involved, as well as the uncertainty as to the therapeutic results obtainable. So far as we know this is the first time that the thyroid gland has been completely resected in an uncomplicated case of severe diabetes.†
Air-sea interaction with multiple sensors - Seasat legacy

By flying a number of ocean observing sensors together, Seasat demonstrated potential of not only sensor synergism, but also science synergism, which has illuminated the path of spacebased air-sea interaction studies in more than two decades since its demise. Two topics - El Nino and tropical cyclone, are discussed as examples of the science synergism inspire by Seasat.