cssi/SciSciGPT-SciSciNet huggingface dataset:
Fluctuations of unbound whole blood polyamine levels during the menstrual cycle.

The polyamines putrescine spermadine (SPD) and spermine (SPM) appear to be ubiquitous in animal tissues. Several hormones including luteinizing hormone estradiol and testosterone affect polyamine biosynthesis. Polyamines can substitute for hormones in some biologic responses. Various neoplastic states are accompanied by increased levels of tissue and circulating polyamines and successful treatment has led to their reduction. Male but not female homo- and heterozygotes for cystic fibrosis have had a specifically increased Spd/Spm ratio in unhydrolyzed whole blood. In this study unhydrolyzed whole blood was examined for Spd and Spm concentrations and ratios in 4 normal women 3 normal males and 1 ovariectomized woman over a 4-week period. Of the women 1 began taking an oral contraceptive containing 1 mg ethynodiol diacetate and 50 mcg ethinyl estradiol 30 days after the study and her Spd/Spm concentrations and ratios were studied for 22 additional days. The ovariectomized female 6 months earlier had had a total abdominal hysterectomy and ovariectomy for adenocarcinoma of the endometrium. Techniques used in extracting polyamines are given. Polyamines in this study refer to free as opposed to total polyamines. Male concentrations showed more variations than did the ratios of Spd/Spm. Female Spd/Spm ratios showed marked fluctuations (p less than .029). Female ratios appeared to rise after the last day of the menses and then to fall. Their concentrations showed a high degree of fluctuation. In the female receiving oral contraceptives the ratio pattern showed very little variation (p less than .62) and was similar to that of the males. For the ovariectomized woman the Spd/Spm ratio showed very little fluctuation and was similar to that of the males. Results suggest that a sex-related hormone(s) influences concentrations and ratios of Spd and Spm. It is suggested that particularly in males abnormal polyamines in whole blood may be useful in the diagnosis or in following the clinical course of cancer or of cystic fibrosis. In females findings must be correlated with the menstrual cycles.
Radial Velocity Observations of the Extended Lunar Sodium Tail

[1] We report the first velocity resolved sodium 5889.950 A line profile observations of the lunar sodium tail observed in the anti-lunar direction near new Moon. These observations were made on 29 March 2006, 27 April 2006 and 28 April 2006 from Pine Bluff (WI) observatory with a double etalon Fabry-Perot spectrometer at a resolving power of ∼80,000. The observations were made within 2-14 hours from new Moon, pointing near the anti-lunar point. The average observed radial velocity of the lunar sodium tail in the vicinity of the anti-lunar point for the three nights reported was 12.4 km s -1 (from geocentric zero). The average Doppler width of a single Gaussian fit to the emission line was 7.6 km s -1 . In some cases the line profile appears asymmetric, with excess lunar sodium emission at higher velocity (∼18 km s -1 from geocentric zero) that is not accounted for by our single Gaussian fit to the emission.
Beauty Lies in the “Eyebrow” of the Beholder: A Public Survey of Eyebrow Aesthetics

Background Several studies have attempted to define the dimensions of an aesthetically pleasing eyebrow. However, these dimensions represent the views of plastic surgeons and cosmetologists, not necessarily the general public. We hypothesized that many patients who present to their plastic surgeon for periorbital rejuvenation actually want their eyebrows to be in a more natural position than was represented in the studies we surveyed. Objective A study was designed to define the dimensions of an aesthetically pleasing eyebrow from the perspective of the general public. This was achieved by surveying individuals in our local community. Methods One hundred individuals were surveyed and asked to rank 27 photographs (including photographs of pre- and postoperative patients and of models) on a scale of 1 to 10 and grade each photograph as either “attractive” or “unattractive”. Each survey taker provided extensive background information. The photographs receiving the highest number of points and “attractive” grades were then analyzed for eyebrow dimensions. The following distances were measured: medial canthus (MC) to medial eyebrow (ME), lateral limbus (LL) to lateral eyebrow (LE), and eyebrow arch position (EAP) to eye width (EW). Ratios were determined using the EW for comparison. We also evaluated the EAP in relation to the LL. Results The eyebrow dimensions (mean ± SD) of the most highly ranked female photographs were as follows: MC-ME:EW ratio 0.573 ± 0.126, LL-LE:EW ratio 0.668 ± 0.083, and EAP:EW 0.703 ± 0.1. The eyebrow dimensions (mean ± SD) of the most highly ranked male photographs were as follows: MC-ME:EW ratio 0.547 ± 0.177, LL-LE:EW ratio 0.58 ± 0.171, and EAP:EW 0.63 ± 0.175. The EAP in relation to the LL was found to be 0.925 ± 0.884 cm lateral to the LL in women, and 1.05 ± 1.04 cm lateral to the LL in men. Conclusions Previously published dimensions of an aesthetically pleasing eyebrow, as defined by plastic surgeons and cosmetologists, differ from dimensions currently defined as attractive by the general public in our study.
Crystal structure of dinitratotris(pyridine)nickel(II), Ni(NC5H5)3(NO3)2

Ni(NC5H5)3(NO3)2 crystallizes in the triclinic space group P¯1 witha=8.432(2),b=9.993(2),c=12.181(3)A, α=69.78(2),β=83.16(2), γ=67.73(1), andD c =1.57 g cm−3 forZ=2. The Ni2+ ion is six-coordinate with one bidentate and one monodentate nitrato ligand.
Operation and Life of the Zetatron: A Small Neutron Generator for Borehole Logging

The zetatron is a small sealed-off D-T accelerator being used for pulsed neutron production in Uranium borehole logging experiments. The tube utilizes a zirconium gas reservoir, Penning type ion source, and up to 130 kV ion extraction with ion beam focussing and secondary electron supression. The mixed D-T beam is incident on a scandium film target and produces in the pulse mode up to 8 × 106 neutrons/sec peak rate at a source current of 2.5 A and target voltage of 130 kV. In the borehole logging application the tube, operating at 100 pps, dissipates an average power of about 10 watts. Life testing has demonstrated an average tube functional life of 148 hours and a shelf life in excess of one year. Life limitations include a steady degradation in neutron output of about 50% in 100 hours and eventual tube puncture fractures that are catastrophic.
Use of monte carlo analysis to characterize nitrogen fluxes in agroecosystems

Intensive agricultural systems are largely responsible for the increase in global reactive nitrogen compounds, which are associated with significant environmental impacts. The nitrogen cycle in agricultural systems is complex and highly variable, which complicates characterization in environmental assessments. Appropriately representing nitrogen inputs into an ecosystem is essential to better understand and predict environmental impacts, such as the extent of seasonally occurring hypoxic zones. Many impacts associated with reactive nitrogen are directly related to annual nitrogen loads, and are not adequately represented by average values that de-emphasize extreme years. To capture the inherent variability in agricultural systems, this paper employs Monte Carlo analysis (MCA) to model major nitrogen exports during crop production, focusing on corn-soybean rotations within the U.S. Corn Belt. This approach yields distributions of possible emission values and is the first step in incorporating variable nutr...
Assembly of colloidal particles into microwires using an alternating electric field.

We have investigated the dielectrophoretic assembly of colloidal gold, carbon black, and carbon nanotubes into electrical wires. The resulting microwires have diameters less than 1 μm, with lengths ranging from 5 μm to 3 mm. Current−voltage curves for these wires indicate an ohmic response, where the resistance is determined by the type of colloid and by the frequency of the alternating field used to grow the wires. The predicted frequency dependence of dielectrophoresis is confirmed by experiment. Measurements of the threshold voltage for initial wire growth are also presented. These experiments demonstrate that a variety of nanoparticles can be assembled into microwires for sensor applications.
An asymptotic wavefunction splitting procedure for propagating spatially extended wavefunctions: application to intense field photodissociation of H + 2

Abstract We describe an efficient procedure for propagation a spatially extended wavefunction evaluated on a small grid. The procedure involves the repeated splitting of the wavefunction into a part residing mainly in the interaction region (small fragment separation) and parts residing solely in the asymptotic region (large fragment separation), and propagation each part separately. The splitting is done by multiplying the wavefunction by the functions f ( R ) and 1− f ( R ), where R is the internuclear separation of an unbound degree of freedom and f (R) equals one in the interaction region and falls to zero in the asymptotic region. Each asymptotic piece of the wavefunction is propagated to some final time, in the momentum representation where it does not spread or translate, by a single application of a free-particle propagator. Unlike the use of an absorbing boundary, the total wavefunction can be reassembled at a later time by adding the individual asymptotic pieces, propagated to a common final time with a free-particle propagator, to the part of the wavefunction remaining in the interaction region. This procedure is well suited to propagation methods that evaluate the wavefunction on a spatial grid, because the amount of asymptotic region included in the grid, and thereforethe computational effort, can be minimized (the smaller the asymptotic region, the more frequent the splitting). The propagation method is demonstrated in the calculation of the fragment kinetic energy distribution produced by the intense field photodissociation of H + 2 . This example illustrates the propagation method for a system whose wavefunction becomes very extended with time due to multiphoton bound-continuum and continuum-continuum transitions.
Structure and action of heteronemertine polypeptide toxins: specific cross-linking of Cerebratulus lacteus toxin B-IV to lobster axon membrane vesicles

The binding of the crustacean-selective protein neurotoxin, toxin B-IV, from the heteronemertine Cerebratulus lacteus, to lobster axonal and muscle membranes has been studied. Synthesis of a radioactive bifunctional cross-linking reagent, 125I-azidosalicylic acid (ASA) B-IV, has allowed these studies as well as experiments that show cross-linking of toxin B-IV to its receptor in axonal membranes. In the absence of photolysis 125I-ASA-B-IV binds to vesicles with an apparent Kd of 30 nM and maximal binding of 7.5 pmol per mg membrane protein. Photolysis of the toxin-receptor complex at 366 nm greatly diminishes the rate of dissociation of bound toxin B-IV. Photolysis also results in the specific cross-linking to axonal proteins of molecular masses 38 and 40 kDa. This cross-linking is not observed in the presence of micromolar unlabeled toxin, in the absence of photolysis or in the presence of 150 mM K+. There is no evidence of cross-linking to proteins of higher molecular weight. The radiolabeled toxin B-IV was also found to bind to lobster muscle membranes with a dissociation constant of 500 nM and a maximum binding of approx. 4.50 pmol per mg membrane protein.
Atmospheric methanesulfonic acid and non-sea-salt sulfate at Fanning and American Samoa

Atmospheric concentrations of aerosol methanesulfonic acid (MSA) and non-sea-salt (nss) sulfate were measured in samples collected during one year periods at Fanning and American Samoa Islands in the Pacific Ocean. Mean concentrations were 0.045 (s=0.011) ug/m⊃3 MSA and 0.67 (s=0.13) ug/m⊃3 nss sulfate at Fanning, and 0.026 (s=0.012) ug/m⊃3 MSA and 0.41 (0.19) ug/m⊃3 nss sulfate at American Samoa. MSA and nss sulfate were significantly correlated at both stations (r=0.76), with a mean MSA/nss sulfate ratio of 0.065. The higher mean levels of MSA and nss sulfate at Fanning compared to American Samoa apparently reflect differences in the biological productivity of the surface ocean in the two regions.
A 1-M X-BAND INFLATABLE REFLECTARRAY ANTENNA

A 1-m, X-band, circularly polarized, inflatable microstrip reflectarray has been developed. It has demonstrated the achievement of a surface tolerance of ±1.3 mm, a mass of 1.2 kg, a bandwidth of at least 3%, a peak sidelobe and a peak cross-pol of −18 dB, and a radiation efficiency of 37%. Correctable areas have been identified to improve the radiation efficiency in the future. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 20: 97–99, 1999.
Variation of Tc with lattice parameter in V3X compounds

Abstract A comparison is made between the lattice parameter dependence of Tc, as determined directly from the application of hydrostatic pressure and by alloying, in the system V3AlχGe1−χ.
Sclerosing cervicitis: An unusual cause of syncope

(Editorial Comment: Sclerosing cervicitis is part of a spectrum of histologically benign idiopathic fibrosclerotic syndromes. Intractable syncopal episodes were successfully treated with resection and reconstruction of the involved carotid artery. This represents a highly unique solution to a severe and debilitating problem.) Sclerosing cervicitis is a rare fibroinflammatory disease process which involves the vascular compartment and surrounding soft tissues of the neck. It is considered part of the spectrum of idiopathic fibrosclerotic syndromes that includes retroperitoneal fibrosis, sclerosing mediastinitis, sclerosing cholangitis, orbital pseudotumor, and Reidel’s thyroiditis. Sclerosing cervicitis, like other fibrosclerotic lesions, behaves clinically like a malignancy, usually presenting as a firm, immobile mass that grossly invades the surrounding soft tissue. The histologic appearance, however, is that of a benign fibroinflammatory process. We report an unusual case of sclerosing cervicitis involving the carotid artery which presented with syncopal episodes. The literature is reviewed and controversial aspects regarding diagnosis and management are highlighted.
"A Thermally Stabilized, Two Frequency Laser Measurement System For Industrial Use"

Hewlett-Packard Company introduced a new laser system based upon a new HeNe laser tube in September 1982. The 5528A Laser Measurement System is finding wide spread use in industry for improving productivity in the numerically controlled machine shop, and is now being designed into machines as a basic positioning transducer. The new laser tube design is simpler and less expensive than that previously built by HP using 2-frequency techniques.
Molecular transforms of kappa carrageenan and furcellaran from mixed gel systems

X-ray fibre diffraction studies of furcellaran-carob, furcellaran-tara, and furcellaran-konjac mannan mixed gels have failed to reveal any evidence for the predicted intermolecular binding between the algal polysaccharide helix and the galactomannan or glucomannan (konjac) mannan). In the absence of such interactions, mixed gels of kappa carrageenan-konjac mannan and furcellaran-konjac mannan, have been used to obtain good quality molecular transforms of the kappa carrageenan and furcellaran molecules in an oriented nematic liquid crystalline form. Analyses of the pattern support double helix structures with threefold symmetry with helix pitch of 2.5 nm. The absence of a 0.83 nm meridional in kappa carrageenan necessitates zero axial translation from the exact half-stagger position, contrary to the model building prediction. An axial translation from half-stagger is necessary for furcellaran.
Repetitive and non-repetitive sequence in sea urchin heterogeneous nuclear RNA.

Heterogeneous nuclear RNA was extracted from sea urchin gastrulae following a ten-minute pulse with [^3H]uridine. Hybridization reactions with excess sheared DNA were carried out using several methods. The fraction of the Hn[^3H]RNA in hybrids was determined by RNAase resistance and hydroxyapatite chromatography in a urea-phosphate medium. After incubation to a DNA C_0t value of 40, 20 to 25% of the Hn[^3H]RNA binds to hydroxyapatite. Approximately one third of these bound molecules are in repetitive DNA-RNA hybrids. The size of the bound RNA molecules measured after hybridization averages 1100 nucleotides. Up to 70% of the Hn[^3H]RNA forms hybrids at high DNA/RNA ratios (130,000/1) when reactions are carried out to high C0t values. Studies of the effect of increased DNA/RNA ratio on extent of hybridization at high DNA C_0t values show that at least two frequency classes of single copy transcript are present in the Hn[3H]RNA population. Both repetitive and single copy DNA transcripts are present within individual Hn[^3H]RNA molecules. Calculations indicate that at least 25% and possibly all of the Hn[^3H]RNA molecules contain repetitive sequence elements interspersed with non-repetitive sequences.
Comparison of cystoscopic and histological findings in patients with suspected interstitial cystitis.

Purpose: Although the exact etiology of interstitial cystitis remains elusive, bladder inflammation appears to be common in many patients. The National Institutes of Health (NIH) have established d...
Career Opportunities in Sport: Women on the Mark

Abstract The following two articles conclude a three-part feature on promotion of sports for girls and women. In the May/June issue, after an introduction by feature editor Nancy L. Lough, Deborah J. Rhea discussed the implications of physical activity and body image for adolescent-females. Lori K. Miller then examined ten ways to promote career opportunities for women in the sport industry. In the August issue, Janet S. Fink analyzed how the media treat girls and women in sports, and Sue G. Mottinger recounted the history of National Girls and Women in Sports Day.
CALCIUM SIGNALS IN T LYMPHOCYTES FROM OLD MICE

Mitogen-induced increases in free calcium ion concentration ([Ca]i) are a key element of the process by which T lymphocytes are induced to proliferate and differentiate into effector cells. T cells from old mice exhibit lower average rises in calcium concentration than T cells from young donors when stimulated with either mitogenic lectins or antibodies to the CD3 chains of the antigen receptor. The decline with age in calcium signal generation is largely attributable to a shift from naive to memory T cells, in that memory T cells, from mice of any age, are more resistant to mitogen-induced changes in [Ca]i. The decline in calcium signal generation is likely to be functionally significant, since T cells isolated on the basis of poor calcium signals show diminished ability to produce and to respond to the growth factor IL-2. Con A induces a transient increase in uptake of radiolabeled calcium from extracellular sources, and the extent of this increase declines with age. Alterations in production of inositol tris-phosphate (IP3) seem not to contribute to age-related changes in calcium signal generation. T cells from old mice, and memory T cells from mice of any age, are relatively resistant to increases in [Ca]i even when these are induced by receptor-independent stimuli such as the calcium ionophore ionomycin. The ionomycin-resistance of memory T cells suggests that these cells may have an augmented ability to buffer changes in [Ca]i, perhaps by increased activity of the ATP-dependent plasma membrane calcium pump. It seems likely that age-related declines in calcium signal generation contribute to the functional immunodeficiency of old age.
Efficient deep blue electrophosphorescent devices based on platinum(II) bis(n-methyl-imidazolyl)benzene chloride

Abstract Highly efficient deep blue phosphorescent light emitting diodes were developed using a newly synthesized series of blue emitting tridentate platinum emitters. Devices employing a cohost of hole and electron transport materials yielded high external quantum efficiencies with low turn on voltage and low efficiency roll off. A maximum EQE of 15.7% and CIE coordinates of (0.16, 0.13) was achieved in a device based on platinum(II) bis(N-methyl-imidazolyl)benzene chloride (Pt-16).
Cost-effectiveness of diagnostic strategies using quantitative real-time PCR and bacterial culture to identify contagious mastitis cases in large dairy herds

Diagnostic strategies to detect contagious mastitis caused by Mycoplasma bovis, Staphylococcus aureus, and Streptococcus agalactiae in dairy herds during an outbreak have been minimally studied with regard to cost and diagnostic sensitivity. The objective of this cross-sectional study was to compare the cost-effectiveness of diagnostic strategies for identification of infected cows in two California dairy herds during contagious mastitis outbreaks. M. bovis was investigated in a subset of a herd (n=1210 cows) with an estimated prevalence of 2.8% (95% CI=1.9, 3.7), whereas Staph. aureus and Strep. agalactiae were studied in a second herd (n=351 cows) with an estimated prevalence of 3.4% (95% CI=1.5, 5.3) and 16.8% (95% CI=12.9, 20.7), respectively. Diagnostic strategies involved a combination of testing stages that utilized bacterial culture, quantitative real-time PCR (qPCR), or both. Strategies were applied to individual or pooled samples of 5, 10, 50 or 100 samples. Culture was considered the gold standard for sensitivity estimation of each strategy. The reference strategy was the strategy with the lowest cost per culture-positive cow which for both M. bovis and Strep. agalactiae consisted of 2 stages, culture of samples in pools of 5 followed by culture of individual samples in positive pools with a sensitivity of 73.5% (95% CI: 55.6, 87.1) and 96.6% (95% CI: 27.7, 84.8), respectively. The reference strategy for Staph. aureus consisted of 3 stages, culture of individual samples in pools of 100 (stage 1), culture constituents of those positive from stage 1 in pools of 5 (stage 2), culture constituents of those positive from stage 2 individually (stage 3) which resulted in a sensitivity of 58.3% (95% CI: 88.3, 99.6). The most cost-effective alternative to the reference strategy was whole herd milk culture for all 3 pathogens. QPCR testing was a component of the second most cost-effective alternative for M. bovis and the third most cost-effective alternatives for the 3 pathogens. A stochastic model was used to assess the effect of prevalence or herd size on the cost-effectiveness of diagnostic strategies. In the current study, increasing the prevalence of mastitis did not alter the ranking of strategies by cost-effectiveness. However, larger herds could benefit from testing larger pools such as 50 or 100 samples to improve cost-effectiveness. Several diagnostic strategy options exist to identify contagious mastitis in herds, decisions should be based on cost and sensitivity of the strategies available.
It hurts so it is real: sensing the seduction of mixed martial arts

This paper explores the seduction of pain within the increasingly popular practice of mixed martial arts. It is based on a three-year ethnographic study of training schools in Minnesota. Within these sites, often-affluent men train their bodies in combat skills, learning to strike and grapple, while building a community around the shared exchange of pain. The drive is often explained with a variation of the statement: ‘I do this because you don't know who you are … you don't feel alive … until you get hit.’ This paper contributes to the growing body of geographic literature centered on practice and affect. Within this approach, there has been little appreciation of physical and violent encounters. Appreciation of the role of pain shifts focus to the moment when the body retreats in upon itself, becoming a united mass of flesh and nerves. I suggest that pain attracts participants through serving three purposes within these fight-based schools: (1) it provides confidence that the experience is ‘real’; (2) i...
Effects of radiation on exfoliated normal and malignant oral cells. A preliminary study

Serial cytological smears taken from both normal mucosa and oral carcinomas of 40 patients were studied for the presence of cancer cells and for radiation response IRR) of the normal-appearing cells. In 30 patients, the presence or absence of exfoliated cancer cells correlated with the clinical appraisal of the lesion. in 1, negative cytological findings were supported by examination of the surgical specimen even though clinically the lesion appeared active. Sik patients with superficially healed lesions but palpable deeper masses showed no exfoliated malignant cells. Another patient had negitive cytological findings and had a sloughing ulcerated lesion. Of 2 patients with positive cytological findings but clinically healed lesions, 1 developed obvious recurrence after 2.5 months. The other patient died after 6 months without evidence of recurrence. Of 17 patients in whom the cytological and clinical findings became negative and for whom follow-up data are available, there was definite clinical recurrence in 7; in 6, this was preceeded by reappearance of exfoliated cancer cells. Smears from the seventh patient remained negative. Observation of the disappearance and reappearance of exfoliated malignant cells appears to be a useful supplement to clinical examination. In assessing the lesion after therapy, it may provide evidence ofmore » recurrence not yet clinically apparent. In the present study, examination of individual cells showed no correlation between RR values or any specific cytological changes and either the radiation dose delivered or the clinical result of treatment. (auth)« less
The dangers of pyramid-mania.

In his article “Mad about pyramids” (News Focus, 22 Sept., p. [1718][1]), J. Bohannon discusses the current Bosnian pyramid-mania and its ramifications, but there is one aspect he did not mention: the loss of important paleontological resources. At the invitation of Semir Osmanagic (also spelled Osmanagich), chairman of the Bosnian Pyramid of the Sun Foundation, I visited Visoko in late July and early August to study the “pyramids” and surrounding geology. The “pyramid” hills are composed of Late Miocene lacustrine and fluvial deposits; certain strata are highly fossiliferous, containing a variety of thus-far undocumented angiosperm leaves and other plant remains as well as animal trace fossils. I believe this area merits serious paleontological study. On the basis of the sedimentology, the hills could well yield scientifically valuable terrestrial vertebrate specimens. Presently, the fossils are being ignored and destroyed during the “excavations,” as crews work to shape the natural hills into crude semblances of the Mayan-style step pyramids with which Osmanagic is so enamored ([1][2]–[3][3]). 1. 1.[↵][4]1. S. Osmanagich , The World of the Maya (Gorgias, Piscataway, NJ, 2005). 2. 2.1. S. Osmanagic , Bosanska Piramida Sunca (Klepsidra, Sarajevo, 2005). 3. 3.[↵][5]1. S. Osmanagic , Bosanska Dolina Piramida (Maunagic, Sarajevo, 2006). [1]: /lookup/doi/10.1126/science.313.5794.1718 [2]: #ref-1 [3]: #ref-3 [4]: #xref-ref-1-1 "View reference 1. in text" [5]: #xref-ref-3-1 "View reference 3. in text"
Solving the Pareto-improving toll problem via manifold suboptimization

Congestion tolls are considered to be Pareto-improving if they reduce travel delay or improve social benefit and ensure that, when compared to the situation without any tolling intervention, no user is worse off in terms of travel cost measured, e.g., in units of time. The problem of finding Pareto-improving tolls can be formulated as a mathematical program with complementarity constraints, a class of optimization problems difficult to solve. Using concepts from manifold suboptimization, we propose a new algorithm that converges to a strongly stationary solution in a finite number of iterations. The algorithm is also applicable to the problem of finding approximate Pareto-improving tolls and can address the cases where demands are either fixed or elastic. Numerical results using networks from the literature are also given.
Identification of ferrihydrite in polysaccharide iron complex by mossbauer spectroscopy and x-ray diffraction

A polysaccharide-iron complex (PIC), synthesized by the neutralization of an FeCl3−carbohydrate solution, is marketed as an oral hematimic (“Niferex”). The iron component was examined using Mossbauer Spectroscopy (12.8-295 K) and X-ray diffraction. From the Mossbauer spectra (a) the iron is high-spin Fe3+; (b) there is a continuous distribution of hyperfine fields at low T with a maximum field approaching 500 k0e as T approaches 0 K; (c) low-temperature spectra have small quadrupole interaction (2ϵ ≅ —0.08 mm/sec); (d) at T ⩾ 77 K the spectrum collapses to a broadened doublet; (e) high-temperature spectra require ⩾ 3 doublets for a good fit. Except for (a) all the above points are inconsistent with akageneite (even though the syntheses are similar) and are consistent with ferrihydrite. The X-ray diffraction spectrum has peaks at 1.48, 2.25, and 2.52 A (broad) and is consistent with ferrihydrite. No akaganeite peaks are present. Except for a slightly larger particle size (evidenced by smaller doublet component above 20 K), PIC resembles ferritin in all of the above characteristics. It may therefore serve as a useful model for the iron core of ferritin.
Searching Serial Issue Monographic Analytics in the Electronic Indexes

Abstract Providing catalog records for selected serial issues through monographic analysis has long been used in the Iowa State University Library as a method of enhancing access to these special issues. A study was undertaken to evaluate whether the library needed to continue to analyze some serials if the monographic issues were accessible in the electronic citation databases. ProceedingsFirst, AGPJCOLA, and Chemical Abstracts were somewhat, but not consistently, successful in locating these issues, and the majority of monographic analytics were not found in the other nine major electronic indexes selected for searching in this study. Since access for monographic analytics is, for the most part, not being systematically incorporated into a selection of major electronic indexes, monographic analysis of serial issues remains an important method of providing access to them.
Kinetics of Browning and Protein Quality Loss in Whey Powders During Steady State and Nonsteady State Storage Conditions

Comparison was made between the amount of browning and protein quality loss during storage of whey powder under steady state conditions (25, 35 and 45°C and aw's of 0.33, 0.44 and 0.65 at each temperature) and a fluctuating temperature condition of 25/45°C with alternating 5 day periods at each temperature. The results showed that the maximum rate of browning and loss of protein quality (e-DNP-lysine and RNV by Tetrahymena assay) occured at aw 0.44 rather than at a higher aw as is found for many dried foods. The Q10's for the reactions were about 5 and 3.7 respectively, for browning and protein quality loss. Of major importance was that storage losses at constant aw, but under the fluctuating temperature condition, were significantly greater than at the mean temperature of 35°C. Using steady state data from the 25, 35 and 45°C conditions, the prediction of browning and protein quality losses for the fluctuating condition compared favorably (+ 10%) to actual losses, based on the simple Arrhenius relationship which indicates that temperature history does not significantly change reaction mechanisms.
Chronic intraventricular administration of lysergic acid diethylamide (LSD) affects the sensitivity of cortical cells to monocular deprivation

In kittens, but not in adult cats, depriving one eye of pattern vision by suturing the lids shut (monocular deprivation or MD) for one week reduces the proportion of binocular units in the visual cortex. A sensitivity of cortical units in adult cats to MD can be produced by infusing exogenous monoamines into the visual cortex. Since LSD interacts with monoamines, we have examined the effects of chronic administration of LSD on the sensitivity to MD for cortical cells in adult cats. Cats were assigned randomly to one of four conditions: MD/LSD, MD/No-LSD, No-MD/LSD, No-MD/No-LSD. An osmotic minipump delivered either LSD or the vehicle solution alone during a one-week period of MD. The animals showed no obvious anomalies during the administration of the drug. After one week the response properties of single units in area 17 of the visual cortex were studied without knowledge of the contents of the individual minipumps. With the exception of ocular dominance, the response properties of units recorded in all animals did not differ from normal. In the control animals (MD/No-LSD, No-MD/LSD, No-MD/No-LSD) the average proportion of binocular cells was 78%; similar to that observed for normal adult cats. However, in the experimental animals, which received LSD during the period of MD, only 52% of the cells were binocular. Our results suggest that chronic intraventricular administration of LSD affects either directly or indirectly the sensitivity of cortical neurons to MD.
From Guanxi to customer relationship marketing: how the constructs of Guanxi can strengthen CRM in the hospitality industry.

Abstract Business today has recognized the cost advantages of customer retention. In reaction to decades of industrialization and mass production, the pendulum has slowly swung back toward more one‐to‐one customer relations and mass customization. One‐to‐one personal attention and relationship building is widely perceived as a desirable method for increasing customer loyalty. Such concepts, however, are not new. Over thousands of years, the Chinese have been practicing “Guanxi,” which Davies (1995) defines as the social interaction within a networked group where repeated favor exchanges ensure a measure of trust among the participants of this network. The constructs of Guanxi, namely bonding, trust, empathy, and reciprocity, can be combined with customer relationship marketing (CRM) and strengthen what a business can offer its customer. This paper, therefore, discusses the history and development of Guanxi in China and its similarities to customer relationship marketing that is practiced today in the West...
DNA Toroids: Stages in Condensation†

The effects of polylysine (PLL) and PLL−asialoorosomucoid (AsOR) on DNA condensation have been analyzed by AFM. Different types of condensed DNA structures were observed, which show a sequence of conformational changes as circular plasmid DNA molecules condense progressively. The structures range from circular molecules with the length of the plasmid DNA to small toroids and short rods with ∼1/6 to 1/8 the contour length of the uncondensed circular DNA. Single plasmid molecules of 6800 base pairs (bp) condense into single toroids of ∼110 nm diameter, measured center-to-center. The results are consistent with a model for DNA condensation in which circular DNA molecules fold several times into progressively shorter rods. Structures intermediate between toroids and rods suggest that at least some toroids may form by the opening up of rods as proposed by Dunlap et al. [(1997) Nucleic Acids Res. 25, 3095]. Toroids and rods formed at lysine:nucleotide ratios of 5:1 and 6:1. This high lysine:nucleotide ratio is ...
News from the South Pole: recent results from the IceCube and AMANDA neutrino telescopes

Abstract The detection of high-energy neutrinos from cosmic sources will open a new window to the universe and help us understand the processes in phenomena like supernova remnants, active galactic nuclei and gamma ray bursts. The article discusses the newest results from searches for point-like sources of cosmic neutrino emission with the AMANDA and IceCube neutrino telescopes.
Thermal stresses in a viscoelastic cylinder with temperature dependent properties

N appoximate solution to the problem of transient thermal stresses in a "long" viscoelastic hollow cylinder with temperature-dependent properties is presented. The approximation consists in averaging the value of the vioselastic "Poisson's" ratio over the whole reduced time interval. The fact that stress distributions in solids are, in general, insensitive to Poisson's ratio variations and the narrow limits of variation of *>(£) leads us to believe that the effect of this approximation will be small. It is shown in Fig. 1 that in the case of the infinite viscoelastic slab the exact and approximate solutions are very close. The solution is immediately applicable to such practical problems as "stress accumulation due to thermal cycling" and "shrinkage stresses" in viscoelastic cylinders. It is hoped that the present method will replace previous unrealistic methods of analysis that were based on the assumption that viscoelastic material properties are independent of temperature.
Rubrobulbar projections of the opossum (Didelphis virginiana).

The course and distribution of rubral pathways to the pons and medulla were determined for the opossum by employing the Nauta-Gygax and Fink-Heimer techniques on the brain stems of animals with lesions either within the red nucleus or involving the fibers emanating from it. Control material was provided by previous studies on corticomesencephalic and tectal efferent pathways and by the brains of specimens subjected to deep midbrain lesion which did not involve the red nucleus. A predominantly crossed rubrobulbar pathway coursed through the brain stem as described by Voris and Hoerr ('32) and distributed to the nucleus “K” of Meessen and Olszewski ('49), to neurons interspersed between the fiber bundles of the motor root of the trigeminal nerve, to the parabrachial nucleus of the brachium conjunctivum, the parvocellular reticular formation, the ventral and medial portions of the spinal trigeminal nucleus (nucleus oralis and interpolaris), the lateral and intermediate portions of the motor nucleus of the facial nerve, the lateral reticular nucleus, the ventral external arcuate nucleus and the subnucleus reticularis dorsalis medullae oblongatae. The possible significance of these connections in the opossum is discussed.
Propulsion System Controls Capabilities and Future Requirements

Future propulsion systems will require more complex control systems. More control functions will be necessary to maintain adequate flow stability margin in a propulsion system during all phases of flight and achieve the optimum fuel economy for any desired thrust setting. The representative control requirements of a current and advanced propulsion system are presented to illustrate the need for increasing the sensing and computational capabilities of propulsion controls. If future controls are expected to develop the maximum performance potential from a propulsion system during all flight conditions, then more direct methods for sensing critical engine parameters must be employed which establish the level of component performance and stability rather than prescheduling their operation. In addition, the control functions of the inlet, engine, and exhaust nozzle must be totally integrated by a “propulsion system control” and coupled with the aircraft guidance and control system to insure that optimum aircraft performance is maintained during all modes of flight operation.Copyright © 1968 by ASME
Comparison of acebutolol with propranolol, quinidine, and placebo: results of three multicenter arrhythmia trials.

Abstract Acebutolol was compared to placebo, propranolol, and quinidine for the suppression of chronic ventricular arrhythmia in three double-blind, randomized crossover studies. Patients averaged ≥ 10 to 30 premature ventricular contractions (PVCs) per hour in the baseline periods. Compared to baseline in all three studies, acebutolol significantly ( p p p p p = 0.02). Similar numbers of patients had ≥ 75% reductions during acebutolol treatment in comparison with propranolol and quinidine. Acebutolol was better tolerated than quinidine and produced an antiarrhythmic effect equivalent to that of propranolol, with a significantly ( p
Negative ion mass spectrometry and the detection of carbonyls and HCN from clover

We have demonstrated that negative ion-chemical ionization mass spectrometry (NI-CIMS) can be used to distinguish several isomeric volatile organic compounds (VOCs) that are emitted from wounded plants. Reaction chemistry with HO−, hydrogen/deuterium exchange patterns, and collision-induced dissociation spectra allow identification of the isomers. Laboratory studies of emissions from wounded clover using NI-CIMS show several previously detected VOCs, but also clearly demonstrate the emission of HCN. This compound is presumably formed by the decomposition of cyanogenic glycosides which also form aldehyde and ketone byproducts. These results suggest that NI-CIMS may be a valuable tool for investigating VOCs and HCN release from vegetation.
A Call for the Publishing of Blt-Stones

Blt-stones, pronounced "blit-stones" are a set of standard routines for interfacing application programs to graphics memories on personal computers. Blt stands for block transfer, and in computer graphics its most common use is combined with bit, as in bitbit. Blt-stones make color bitbits fast and easy to code. They provide both quantitative and qualitative information about graphics hardware performance, and they give insight into the architectures of graphics boards. They can be used to count the number of pixel-writes per secound, or to determine how many bytes of code are required to gain access to a board's memory. Blt-stones is a term coined by the authors to be a graphics analog to whetsones and dhrysones, performance measures for computer processing speeds.
Looking at Graviton Properties, as Either Classical or QM, in Nature, via Alicki-Van Ryn Experimental Realization

Recently, the author read the Alicki-Van Ryn test as to behavior of photons in a test of violations of classicality. The same thing is propoosed via use of a spin two graviton, using typical spin 2 matrices. While the technology currently does not exist to perform such an analysis yet, the same sort of thought experiment is proposed in a way to allow for a first principle test of the either classical or quantum foundations of gravity. The reason for the present manuscript topic is due to a specific argument presented in a prior document as to how is formed from semiclassical reasoning. We referred to a procedure as to how to use Maxwell’s equations involving a closed boundary regime, in the boundary re- gime between Octonionic Geometry and quantum flat space. Conceivably, a similar argument could be made forgravi- tons, pending further investigations. Also the anlysis of if gravitons are constructed by a similar semiclassical argument is pending if gravitons as by the Alicki-Van Ryn test result in semiclassical and matrix observable eigenvalue behavior. This paper also indirectly raises the question of if Baysian statistics would be the optimal way to differentiate between and matrix observable eigenvalue behavior for reasons brought up in the conclusion.
Precise Test of Electroweak Theory from a New Measurement of Parity Nonconservation in Atomic Thallium.

We report a new measurement of parity nonconserving (PNC) optical rotation near the 1.28 $\ensuremath{\mu}$m, ${6P}_{1/2}\ensuremath{\rightarrow}{6P}_{3/2}$ magnetic dipole transition in thallium. We find the ratio of the PNC $E1$ amplitude to the $M1$ amplitude to be $R\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}(\ensuremath{-}14.68\ifmmode\pm\else\textpm\fi{}0.17)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$, which within the present uncertainty of atomic theory yields the thallium weak charge ${Q}_{w}(^{205}T\mathrm{l})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{-}114.2\ifmmode\pm\else\textpm\fi{}3.8$ and the electroweak parameter $S\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{-}2.2\ifmmode\pm\else\textpm\fi{}3.0$. Separate measurements on the $F\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$ and $F\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$ ground-state hyperfine components of the transition yield ${R}_{1}\ensuremath{-}{R}_{0}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}(0.15\ifmmode\pm\else\textpm\fi{}0.20)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$, which limits the size of nuclear spin-dependent PNC in Tl.
A 53-Year-Old Female with a 3- to 4-Month History of Fever, Night Sweats, Lethargy, Anorexia, Splenic Infarction, and Worsening Mitral Valve Prolapse

A 53-year-old white female was evaluated because of a 3- to 4-month history of low-grade fevers, lethargy, decreased appetite, drenching night sweats, abdominal pain, and shortness of breath. The patient had a past medical history of mitral valve prolapse, hypertension, diverticulitis status after
Bronchogenic cyst causing repeated left lung atelectasis in an adult.

Abstract A case is recorded of left lung atelectasis due to a carinal bronchogenic cyst in an adult. This particular presentation has not heretofore been reported. Bronchogenic cysts caused symptoms in 39% of adults described in the literature. Infection and pain were the most frequent presenting problems. A characteristic clinical picture of left-sided emphysema and right lung atelectasis caused by carinal cysts in children is probably due to the smaller lumen and lesser obliquity of takeoff from the left main-stem bronchus. This adult case followed the general rule that there is a greater chance of left than right lung difficulties with this entity.
The Endowment—Institutional Affinity Effect

The endowment effect occurs when ownership of a good leads consumers to value the good more than its market value. Students who were given College of Business Administration insignia mugs to keep valued them significantly more than students who were given the same mugs to examine and return (nonendowment condition). The endowment effect also occurred for plain white mugs. Students who were given plain white mugs to keep valued them more than students who were given the same mugs to examine and return. Ownership of insignia mugs not only resulted in the endowment effect but also resulted in an institutional affinity effect: Students provided higher satisfaction ratings with the College of Business Administration than did students endowed with plain white mugs and students in nonendowed conditions. This study demonstrates the impact of the endowment effect on institutional affinity for insignia goods. However, the tandem endowment-affinity effect occurs at the attitude formation stage, not when an attitude has already been formed.
Menstrual patterns and risk of adult-onset diabetes mellitus

We examined the association between menstrual patterns and risk of developing adult-onset diabetes in a prospective study of 668 white, college-educated women who completed menstrual diaries throughout their reproductive years. We calculated summary measures of cycle length and variability and bleeding duration for ages 42 days). Longer bleeding periods in the mid- and late reproductive years were somewhat associated with an increased risk of diabetes (adjusted rate ratio 1.4, 95% confidence interval 1.0-1.8 per day increase in bleeding duration for menses during ages 28-32). These results do not support the association of long or irregular menstrual cycles with post-menopausal diabetes incidence, but do suggest a possible association of longer bleeding duration with subsequent onset of diabetes.