Suppression of the speckle noise in solid polymer samples: a light scattering study

1994

The speckle effect disturbs the measurement of spatial correlation functions in solid polymer samples by light scattering. To be able to extract the desired correlations from the measurements, the speckle noise must be suppressed. This is possible by moving the sample during the measurement. In this paper we demonstrate that a sufficient reduction of speckle contrast can be achieved even in samples of restricted dimensions or with a preferential direction.

Long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency: a severe fatty acid oxidation disorder

1994

3-Hydroxyacyl-CoA dehydrogenase deficiency is a newly recognised fatty acid oxidation disorder with a usually fatal outcome. We present a further patient who presented with hypoketotic hypoglycaemia, hepatopathy, secondary carnitine deficiency and increased plasma long-chain acylcarnitines. 3-Hydroxydicarboxylic aciduria was present and the diagnosis confirmed in cultured skin fibroblasts. Our patient is compared with those reported in the literature with respect to clinical symptoms, differential diagnosis and possible therapeutic regimens.

Pancreatic insufficiency in celiac disease is not dependent on nutritional status

1994

To determine the relationship between pancreatic secretory capacity and nutritional status in celiac patients, we studied 52 patients with celiac disease (24 males, 28 females; age range 6-36 months) and 30 healthy control subjects (14 males, 16 females; age range 6-42 months). A secretin-cerulein test was performed on all patients, and levels of serum albumin and plasma fibronectin were assayed. In addition, weight/height ratios were calculated in the celiacs, who were then divided into three groups on this basis, as follows: celiacs with weight/height ratioor = 3rd percentile; those with weight/height ratio between the 4th and 10th percentiles; and those with weight/height ratio10th perce…

Alterations in androgen conjugate levels in women and men with alopecia.

1994

Objective To assess levels of androgen metabolites thought to reflect, at least in part, peripheral androgen activity in women with androgenic alopecia and men with premature balding in an effort to determine if a common abnormality exists. Design Prospective study in various groups of women and men. Setting Reproductive Endocrine Clinic at our university medical center. Patients Ten normal ovulatory female controls and 50 hyperandrogenic women divided on the basis of hirsutism and alopecia as follows: [1] 8 hirsute women with androgenic alopecia; [2] 12 nonhirsute women with androgenic alopecia; [3] 18 hirsute women without androgenic alopecia; and [4] 12 nonhirsute women without androgeni…

Differential expression of mRNA encoding interleukin-12 p35 and p40 subunitsin situ

1994

Interleukin-12 (IL-12) is a heterodimeric cytokine that plays an important role in the regulation of the immune response. For biological activity the expression of both subunits of IL-12, p35 and p40, is required. Moreover, in the mouse the p40 chain of IL-12 specifically inhibits the effects of the IL-12 heterodimer. In the present study we have analyzed by in situ hybridization the expression of the p35 and p40 mRNA in the spleens of BALB/c and mutant (SCID, nude, beige) mice, unstimulated and after in vivo stimulation with lipopolysaccharide (LPS) and with staphylococcal enterotoxin B (SEB). In unstimulated spleens of BALB/c mice p35 and p40 mRNA were only detectable in a few strongly st…

Bacteria-specific cytotoxic CD8+ T cells: a missing link in the pathogenesis of the HLA-B27-associated spondylarthropathies.

1994

The term seronegative spondylarthropathies is used for an entity of rheumatic syndromes of peripheral joints and the spine (ankylosing spondylitis, reactive arthritis, Reiter's syndrome, arthritis in psoriasis and in inflammatory bowel disease) which are strongly associated with the MHC class I molecule HLA-B27. However, the mechanisms whereby HLA-B27 confers disease susceptibility have so far remained unknown. There is strong evidence that gut inflammation and infection with gram-negative bacteria play a role in the induction of B27-associated disease. HLA-B27, like other MHC class I molecules, physiologically binds antigenic peptides in its binding groove and presents them to CD8+ T lymph…

Long-Term Oxygen Therapy

1994

Analisi elettromagnetica di dispersori di terra di configurazione complessa sottoposti a corrente impulsiva. Caratterizzazione degli elettrodi e inte…

1994

Proton Inelastic Scattering onNi56in Inverse Kinematics

1994

Inelastic proton scattering to the first excited ${2}^{+}$ state of the doubly magic $^{56}\mathrm{Ni}$ nucleus was investigated in inverse kinematics, using a secondary beam of radioactive $^{56}\mathrm{Ni}$ nuclei. At an incident energy of 101 MeV/nucleon, a value $B(E2,{0}^{+}\ensuremath{\rightarrow}{2}^{+})=600\ifmmode\pm\else\textpm\fi{}120 {e}^{2}$ ${\mathrm{fm}}^{4}$ was measured. This result completes the set of experimental data for the first excited ${2}^{+}$ states in the $1f\ensuremath{-}2p$ shell with a closed shell of neutrons or protons. These data are compared to recent shell-model calculations.

How to make an intelligent electronic nose with silly gas sensors...

1994

National audience

Present and future searches with e^+e^- colliders for the neutral Higgs bosons of the Minimal Supersymmetric Standard Model -- the complete 1-loop an…

1994

New mass regions unexcluded by direct searches are revealed by an analysis of experimental results from LEP1 using full 1-loop diagrammatic calculations of radiative corrections in the MSSM. Simulations of experimental signal efficiencies and background rejection factors, and full 1-loop calculations are combined to study the sensitivity for neutral Higgs bosons at LEP2 and the NLC. Compared with previous studies based on an Effective Potential Approach, we identify mass regions where the discovery potential depends on the MSSM parameters other than the top and stop masses. We propose our method of interpretation to be adopted by the four LEP experiments for better precision. The possibilit…

FIA-AAS determination of salicylic acid by a solid-phase reactor of copper carbonate incorporated in polyester resin beads.

1994

Abstract The determination of salicylic acid was carried out by reaction of the drug with copper carbonate entrapped in a polymeric material in a solid-phase reactor; the released cupric ions were monitored by flame atomic absorption at 324.8 nm. The calibration graph is linear over the range 4.0–75 μg ml −1 of salicylic acid, with a relative standard deviation of less than 1.5% and a sample throughout of 257 h −1 . The influence of foreign compounds was studied and the method was applied to the determination of salicylic acid content in two different pharmaceutical formulations.

Arbitrage international. Sentence rendue à l'étranger, Exequatur demandé en France, Compétence territoire, Absence de règles spécifiques, Choix par l…

1994

International audience; (Paris, 10 juill. 1992, Rev. arb. 1994. 142, note P. Level)

The chemical bonds in CuH, Cu2, NiH, and Ni2 studied with multiconfigurational second order perturbation theory

1994

The performance of multiconfigurational second order perturbation theory has been analyzed for the description of the bonding in CuH, Cu2, NiH, and Ni2. Large basis sets based on atomic natural orbitals (ANOS) were employed. The effects of enlarging the active space and including the core‐valence correlation contributions have also been analyzed. Spectroscopic constants have been computed for the corresponding ground state. The Ni2 molecule has been found to have a 0+g ground state with a computed dissociation energy of 2.10 eV, exp. 2.09 eV, and a bond distance of 2.23 Å. The dipole moments of NiH and CuH are computed to be 2.34 (exp. 2.4±0.1) and 2.66 D, respectively. pou@uv.es ; merchan@…

Déclaration des créances. Annulation par la cour d'appel du jugement d'ouverture du redressement judiciaire. Annulation étendue aux déclarations de c…

1994

International audience; (Com. 25 mai 1993, Beux-Prere ès qual. c/ SDRN ; Com. 8 mars 1994, SARL Société commerciale de Courtage c/ Union de Crédit pour le Bâtiment)

Arbitrage interne. Durée de l'arbitrage, Prorogation conventionnelle de compétence sans indication de la durée, Délai légal de l'article 1456 NCPC., …

1994

International audience; (Civ. 2e, 1er juin 1994, Soc. Colas et Sogea, inédit ; Civ. 2e, 5 avr. 1994, SARL Hostin armes blanches, inédit ; Civ. 2e, 9 févr. 1994)

(CE 18 févr. 1994, M. Pironnet, req. n° 138898 ; CE 18 févr. 1994, Syndicat des pharmaciens du Puy-de-Dôme, Conseil régional de l'Ordre des pharmacie…

1994

International audience

Adsorption on a stepped substrate.

1994

Revendication. Bailleur soumis au délai préfix de l'art. 115, Non-contrariété à l'art. 1er du premier protocole additionnel à la Convention européenn…

1994

International audience; (Com. 8 mars 1994, SA Equipbail c/ Société française du raccord et autres)

Sûretés réelles. Vendeur titulaire d'un gage, Possibilité d'invoquer la clause de réserve de propriété plutôt que le droit de gage (oui)

1994

International audience; (Com. 5 oct. 1993, Sulzer ès qual. c/ Société Diac équipement)

Créanciers de l'article 40. Liste de l'article 61 du décret de 1985, Contestation de la liste, Nécessité d'une déclaration au greffe, Droit de poursu…

1994

International audience; (Com. 7 juill. 1992, Laiguède ès qual, c/ Percepteur de Périers ; Com. 8 févr. 1994, Bouffard c/ Société Gillardeau)

Créances de l'article 40. Créances salariales et cotisations sociales, Etat de la question

1994

International audience

Arbitrage institutionnel. Désignation d'un arbitre unique par l'institution, Volonté des parties de constituer un tribunal collégial, Interprétation,…

1994

International audience; (Civ. 1re, 10 févr. 1994, inédit, Mme Decrosse c/ Mme Bosquet et autres)

Arbitrage international. Sentence, Ordonnance émise par le tribunal arbitral pour désigner des experts-nature juridique, Acte d'instruction

1994

International audience; (Paris, 25 mars 1994, inédit, Soc. Saudi Sud SA - Soc Al Amin Securites Corp c/ SA Technip et autres).

Appel d'une sentence arbitrale. Etendue des pouvoirs de la cour d'appel, Limite du compromis-désignation d'un expert-recherche du manque à gagner, ab…

1994

International audience; (Civ. 2e, 23 févr. 1994, inédit, Soc. Entreprise Marine c/ Soc. Perma)

A specific microassay for evaluating hepatic LDH activity in co-cultures of hepatocytes with other cells.

1994

This study describes the development of a simple, rapid and reproducible microassay for determining the intracellular LDH activity of rat hepatocytes present in a co-culture system with other cells. The procedure involves treatment of cellular homogenates with an anti-LDH antiserum that specifically inhibits the LDH activity of rat hepatocytes. The assay is performed in 96-well plates and LDH activity can be measured directly in the same wells using a colorimetric method. The difference in LDH activity values measured before and after antiserum incubation reflects the LDH content of the hepatocytes in the sample. The advantages of this method are the small number of cells required, a reduct…

Design and some analyses of the coffee experiment organized by the european sensory network (ESN)

1994

International audience

Caractérisation et modélisation des échanges de masse et d'énergie au niveau des couverts épars

1994

National audience

Interactions surface continentale/atmosphère : l'expérience HAPEX-Sahel

1994

L'évolution saisonnière des termes du bilan radiatif, du bilan d'énergie et la production primaire d'une savane humide d'Afrique de l'Ouest (Lamto, Côte d'Ivoire) a été suivie dans le cadre du programme SAvanes à Long Terme (SALT). Ces données ont permis de développer un modèle de simulation des échanges surface/atmosphère en savane humide, basé sur les relations fonctionnelles existant entre la production et la phénologie de la savane d'une part, et les bilans d'énergie et hydrique de ce type de surface d'autre part. Ce modèle est issu du couplage de deux sous-modèles fonctionnant au pas de temps journalier et utilisant des variables climatiques standard en entrée : le modèle de bilan d'én…

Solubility of some calcium-carboxylic ligand complexes in aqueous solution

1994

Insoluble species were identified in the systems Ca(2+)-hemimellitate, Ca(2+)-1,2,3,4-butanetetracarboxylate and Ca(2+)-citrate, and their solubilities were determined in aqueous solution at T = 25 degrees C. Values of pK(s0) were obtained for the species CaLH (L = benzene-1,2,3-tricarboxylate or hemimellitate), Ca(2)L (L = 1,2,3,4-butanetetracarboxylate), CaLH and Ca(3)L(2) (L = citrate), together with their dependence on ionic strength. Solid compounds were also characterized by thermogravimetry. The complex formation in solution for the system Na(+) - and Ca(2+)-hemimellitate was studied too.

Simulation of citrus orchard reflectance by means of a geometrical canopy model

1994

Computer simulation of the reflectance for citrus crops, by using a geometrical canopy model, has been carried out to analyse and interpret the reflectance values from Landsat-5 Thematic Mapper (TM...

Two-Dimensional Melting Approached via Finite-Size Scaling of Bond-Orientational Order

1994

Relying on Monte Carlo simulations, we investigate the hard-disk melting transition. The finite-size scaled values of the bond-orientational order parameter moments are obtained with the block analysis technique. The behaviour of Binder's cumulant and the susceptibility favour an interpretation in terms of a first-order transition.

<title>Electrochromism in oxyfluoride thin films</title>

1994

Oxyfluoride films based on W and Ti were prepared by reactive sputtering in plasmas containing O2 + CF4. The deposition rate was large, particularly when chemical sputtering was promoted by heating the target. The films could show large charge insertion/extraction, high coloration efficiency, and good cycling durability.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

TUMORI MALIGNI RARI NEL BAMBINO: DATI DA UNO STUDIO RETROSPETTIVO MULTICENTRICO

1994

Le neoplasie con incidenza annuale inferiore a 2 casi per milione di bambini sono considerate rare. Allo scopo di valutare l'esperienza dei pricipali Centri pediatrici e chirurgici-pediatrici su tumori maligni rari attualmente non registrati in protocolli nazionali, è stato condotto uno studio retrospettivo cooperativo. Sono stati registrati 164 pazienti osservati in 34 Centri Italiani dal 1982 al 1993.

Scaling behavior in the $\beta$-relaxation regime of a supercooled Lennard-Jones mixture

1994

We report the results of a molecular dynamics simulation of a supercooled binary Lennard-Jones mixture. By plotting the self intermediate scattering functions vs. rescaled time, we find a master curve in the $\beta$-relaxation regime. This master curve can be fitted well by a power-law for almost three decades in rescaled time and the scaling time, or relaxation time, has a power-law dependence on temperature. Thus the predictions of mode-coupling-theory on the existence of a von Schweidler law are found to hold for this system; moreover, the exponents in these two power-laws are very close to satisfying the exponent relationship predicted by the mode-coupling-theory. At low temperatures, t…

Characterization of Chlorolignins in Bleached Kraft Pulp Mill Effluents Using Elemental Analysis and Fingerprinting by CuO Oxidation And Hplc

1994

Abstract Elemental analyses and chemical degradation techniques were applied to characterize lignin compounds in different stages of the chlorine bleaching process and in total mill effluent. Ultrafiltration was used for separation of chlorolignins into three nominal molecular weight fractions. Alkaline CuO oxidation products were analyzed by HPLC with diode array detection. Major compounds were identified by reference to authentic compounds. For comparison, native lignins (MWL), kraft lignins, and humic substances were studied as well. The oxygen, carbon and organic chlorine contents were closely similar in the various mill samples and their fractions. In all mill samples, vanillin and 6-c…