Ingredients of Calculation

1991

The calculation is done in the conventional framework of non-relativistic nuclear physics with nucleon, meson and isobar degrees of freedom but the dominant relativistic corrections of lowest order are included as outlined below.

Synthesis of Mammalian Gonadoliberin Analogs with the N-terminal glutamine or glutamine or glutamic acid

1991

Synthesis of two mammalian gonadoliberin analogs, [Gln1]GnRH and [Glu1]GnRH, in solution by the peptide segment coupling of the [(2 + 4) + 4] type has been described.

Theoretical approach and clinical application of kinetic modelling in dialysis.

1991

Using kinetic modelling for shaping profile dialysis, we present a promising approach to improve the cardiovascular stability of patients during dialysis treatment. In order to obtain an insight into the physiological mechanisms of increased stability, a model considering alterations of electrolytes and water distribution and of acid-base status was developed. This algorithm was used for the evaluation of 114 dialysis sessions, which were performed with highly individualised profiles. Each profile was developed for one patient by trying empirically to prevent episodes of hypotension as well as other clinical problems throughout dialysis. The main advantage of profile dialysis compared to st…

Congenital pulmonary lymphangiectasia

1991

Production and decay of charmed mesons at the Z resonance

1991

Abstract In a sample of 190 000 hadronic Z decays, three signals of charm production are observed: two from the exclusive decays D ° → K − π + and D ∗+ → D °π + → K − π + π + and one in the transverse-momentum distribution of soft hadrons relative to the nearest jet. The features of these signals are in good agreement with expectations based on the standard model and previous measurements of the branching fractions. The number of D ∗± → K ± π ± π ± per hadronic decay of the Z is measured to be (5.11±0.34) × 10 −3 , and the branching ratio B(D 0 → K − π + ) is (3.62 ± 0.34 ± 0.44)%. Charm hadronization has been studied. The average fraction of the beam energy carried by the D ∗ meson is foun…

(3Z,6Z,8E)-3,6,8-dodecatrien-1-ol : Sex pheromone in a higher fungus-growing termite, Pseudacanthotermes spiniger (Isoptera, Macrotermitinae)

1991

International audience; The female sex pheromone of the fungus-growing termitePseudacanthotermes spiniger (Termitidae, Macrotermitinae) was isolated from sternal glands of alates. The compound inducing attraction and excitation in males was identified as the (3Z,6Z,8E)-3,6,8-dodecatrien-1-ol by GC-MS, microhydrogenation, GC-FTIR, and NMR. This unsaturated alcohol is present in both sexes but in much higher quantities in females than in males (about 10 times). The hypothesis is suggested that this alcohol, which is detected at extremely low concentrations by the workers ofP. spiniger, may be used either as a trail-following pheromone or a sex pheromone according to concentrations and to targ…

Artroplastia de rodilla: nuestra experiencia

1991

Se presenta una casuística de 209 prótesis tricompartimentales de deslizamiento respetando el LCP, de las que 52 fueron PCA y 150 AGC, cementadas y sin cementar y 7 ICLH, implantadas desde 1980 a 1990, con un seguimiento medio de 4.5 años, obteniendo un 40% de Muy Buenos Resultados, un 51% de Buenos Resultados, 5% Regulares y 4% de Malos. No se encontraron diferencias significativas entre cementadas y sin cementar. Se presentaron complicaciones en 9,56% de los casos. Se expone la técnica quirúrgica así como las conclusiones prácticas de nuestra experiencia. A series of 209 prosthesis with three sliding compartiments retaining the PCL are presented, of these 52 were PCA and 150 AGC, with or …

Estimation de la consommation alimentaire de sulfites en France

1991

National audience

Die iatrogene Gallenwegsläsion — ein postoperativer Notzustand? Analyse der Langzeitergebnisse

1991

Zur Uberprufung der Langzeitergebnisse nach operativer Korrektur von iatrogenen Gallengangsverletzungen wurde das Krankengut der Klinik und Poliklinik fur Allgemein- und Abdominalchirurgie der Johannes-Gutenberg-Universitat Mainz vom Ol. Ol. 1964 bis zum 31.12.1987 retrospektiv analysiert. Von III Patienten konnten 72 nachuntersucht werden. Die durchschnittliche Nachuntersuchungszeit betrug 9,4 Jahre. Nur 20% (End-zu-End-Anastomose) bzw. 34% (bihodigestive Anastomose) der Patienten waren nach bis zu 23 Jahren beschwerdefrei. 58% (End-zu-End-Anastomose) bzw. 35% (bihodigestive Anastomose) der Kranken muste relaparotomiert werden. Die schlechtesten Langzeitergebnisse hatten die Anastomosen mi…

Natural beta-interferon and androgen receptors in prostatic cancer cells.

1991

Both PC-3 and DU-145 cell lines are androgen-insensitive, but, in our experience, they contain androgen receptors (AR). Treatment of these cells with natural beta-interferon at a concentration of 1,000 IU/ml of culture medium determines an increase of AR (evaluated by a whole-cell assay), statistically significant with respect to control. Androgen unresponsiveness of our cells could be due to an AR level which is lower than that present in hormone-sensitive prostatic cancer cell lines, such as LNCaP cells. For this reason, interferon-promoted AR increase merits further investigation, even if other defects in receptor mechanism, responsible for hormone insensitivity, cannot be excluded.

MRI-assisted radiation therapy planning of brain tumors--clinical experiences in 17 patients.

1991

A new and simple method for precise determination of lateral opposed treatment portals was developed and used in 17 patients. Compared to CT, MRI led to significant changes of portals in 59% (10/17) of cases. Individual shielding blocks could be precisely designed by use of our new method. MRI is the procedure of choice in local radiation therapy planning of brain tumors.

Aportaciones de la antracología al estudio del paisaje vegetal y su evolución en el Cuaternario reciente, en la costa mediterránea del País Valencian…

1991

Inscripción de Isis Pelagia

1991

Se estudia una inscripción romana de Sagunto dedicada a Isis Pelagia.

Magneto-structural correlations in low dimensional ferrimagnetic systems

1991

The bimetallic compounds of the EDTA family provides a large diversity of ferrimagnetic model systems in which the dimensionality as well as the exchange-anisotropy can be controlled with ease. This paper deals with the magneto-structural chemistry of this family.

The onset of metamorphosis in Tenebrio molitor larvae (Insecta, Coleoptera) under grouped, isolated and starved conditions

1991

Abstract The post-embryonic development of the beetle Tenebrio molitor presents a variable number of larval instars. Several parameters (instar length, time of apolysis and cuticle deposition) were compared during the larval-larval and larval-pupal cycles of mealworms over 50 mg, reared in grouped or isolated conditions. In grouped conditions comparable to mass breeding, larval-larval and larval-pupal apolyses were found to occur at the same time, but instar duration was longer in the case of prepupae. However, isolation was found to accelerate larval-pupal (but not larval-larval) apolyses and to reduce the number of larval instars, whereas starvation inhibited larval-larval (but not larval…

Experimental results for two-particle break-up

1991

In this section we shall review the present status of experiments on two-body photo-disintegration of deuteron up to and above the Δ region. The results of different experiments will be discussed and a guideline will be given for a selection of the experiments to be used in the comparison of experimental data with theoretical results. Moreover, since a large variety of observables exists, which have been studied experimentally, we shall discuss which kind of measured quantities, having a smaller systematic error, can give more accurate information.

Spontaneous Monokine Release by Alveolar Macrophages in Chronic Sarcoidosis

1991

In pulmonary sarcoidosis an activation of alveolar T lymphocytes and alveolar macrophages (AM) has been demonstrated. There is evidence that in contrast to acute disease a heightened T-cell response cannot be observed in the chronic phase of sarcoidosis. The role of AM in the inflammatory process of chronic sarcoidosis is not yet intensively evaluated. To address this question we measured the release of tumor necrosis factor alpha (TNFα) and interleukin-1 (IL-1) by AM of 39 patients with chronic sarcoidosis (duration > 4 years; 30 active, 9 inactive diseases) without therapy and correlated the monokine release with parameters of T-cell alveolitis and the course of the disease. The T4/T8 …

Die Embryologie im Spannungsfeld zwischen Tradition und Empirie.

1991

Already in classical antiquity people dealt with the principle of formation, developing different theories. Researchers in the renaissance, working in the conflict zone between tradition and experience, tried to prove one or the other of these theories by the means of new observations, especially of chicken development. Aldrovandi was the first to see the real principle of formation of the hen's egg, i. e. the blastodisc, but he didn't recognize the importance of his discovery due to his close adherence to Aristotle in the theoretical field. Fabricius even thought that traditional knowledge was of more importance than his own excellent observations. Parisano was the first to succeed in maki…

Les situles

1991

Recherches sur les herbicides: etat des connaissances et perspectives

1991

National audience

ATPasa de plasmalena de plantas de arroz : Caracterización y efecto del Cadmio y Níquel sobre su actividad. Relaciones con la composición Lipídica de…

1991

Prediction of Swirling Flow in a Corrugated Channel

1991

Laminar and turbulent flow in a corrugated channel is simulated using HARWELL-FLOW3D. The channel represents a typical cell within a proposed design for the heat-transfer element of a rotary regenerator. Velocity vectors in planes perpendicular and parallel to the axis of a corrugation are visualised using Harwell’s graphics package, OUTPROC. Both programs were mn on Harwell’s Cray 2. The velocity vector plots show clear evidence of swirl, which is thought to be the mechanism responsible for the high rates of heat transfer in this type of heat-exchanger geometry. The swirl strength is shown to be a function of the channel geometry.

Contribution a la lutte contre la pyrale du mais: optimisation d'un procede de production par fermentation en milieu solide d'un champignon entomopat…

1991

*INRA Plate-forme de Predeveloppement en Biotechnologie, Centre de Dijon Diffusion du document : INRA Plate-forme de Predeveloppement en Biotechnologie, Centre de Dijon Diplôme : Dr. d'Université

Evaluation of collateral flow capacity in patients with vascular or tumorous lesions of the skull base by Doppler sonography

1991

In 12 patients with vascular or tumorous lesions of the skull base, the collateral flow capacity was examined by transcranial Doppler sonography and carotid compression studies. In four patients no cross flow mechanism was found, in two patients the test remained unclear, and in six patients the examination suggested a good collateral flow capacity. However, for this application of Doppler sonography no borderlines have yet been defined and thus interpretation is difficult. Intraoperative Doppler sonography was used in five patients and proved to be helpful for localisation of the internal carotid artery within skull base tumors.

Diagnostic value of transesophageal echocardiography in patients with coronary artery disease and mitral insufficiency

1991

Any diagnosis of mitral regurgitation must always include the etiology. The clinical history is only rarely informative, as are chest x-ray examinations. The ECG is of value to diagnose coronary artery disease with or without previous myocardial infarction — but further differentiation is not possible. During heart catheterization mitral insufficiency can be diagnosed and quantified according to Seller’s classification [1]. A differentiation of etiology is only rarely possible. Rheumatic heart disease and mitral valve prolapse can be differentiated.

New antiasthmatic drugs from traditional medicine?

1991

Several plants are used in traditional medicine for the treatment of bronchial asthma. We are trying to identify the active compound(s) and their mode of action. For the isolation and identification of the active principles, different chromatographic methods, HPLC, MPLC, elementary analysis, UV, mass, <sup>1</sup>H- and <sup>13</sup>C-NMR spectroscopy are used. Whole plant extracts, fractionated extracts and pure compounds are tested in the following pharmacological systems: cyclooxygenase and lipoxygenase pathway of arachidonic acid metabolism, bronchial obstruction of guinea pigs after inhalation of allergens, platelet-activating factor (PAF), histamine or acetylch…

Experimental study of the triple-gluon vertex

1991

Abstract In four-jet events from e+e− →Z0 →multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle θ NR ∗ and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor Nc to the fermionic Casimir operator C F : N c C F = 2.55 ± 0.55 ( stat. ) ± 0.4 ( fragm. + models…

Du village global aux hameaux planetaires

1991

Heart of Spain

1991

Heart of Spain no es sólo el título de un film sobre la guerra civil española; es también una constante apelación y una retórica. Una metáfora biológica que se muda en sentimental y a la que se refiere repetidamente el cine de la posguerra. Coloquemos junto a esta metáfora otra que le suele acompañar, también física: la herida. Es así como toma cuerpo el universo al que remiten los films de la posguerra: por una parte, apelando a la grandeza ampulosa del corazón español, corazón éste siempre del lado de los vencedores (el valor, el amor a la patria, a la familia, a la tradición), mientras frente a él se advierte la aplicación deshumanizada de las consignas republicanas, tachadas con papanat…

Regulation of NT Receptors after Chronic Treatment with Typical and Atypical Neuroleptic Drugs

1991

Neurotensin is a tridecapeptide, which produces central effects such as hypotension, hypothermia, muscle relaxation, analgesia, antinociception, and reduces locomotor activity (Nemeroff et al., 1977). In the recent years, several lines of evidences indicated the great importance of the dopamine (DA)- neurotensin (NT) interaction taking place mostly in the mesolimbocortical areas, both at cell bodies (A10 DA-ergic group located in the ventral tegmental area -VTA-) and nerve terminal level (cerebral cortex, n. accumbens, olfactory tubercle, ventral n. caudato-putamen) (Quirion, 1983; Nemeroff, et al., 1984; Nemeroff, 1986). Immunocytochemical data indicated the presence of NT-like immunoreact…

Un documento inédito sobre los exiliados españoles en los dominios austriacos después de la guerra de Sucesión

1991

Estudio de la expresión génica en cromosomas politénicos de tres especies de Drosophila del grupo obscura

1991

Análisis microestructural de Los pazos de Ulloa

1991

'Análisis microestructural de Los pazos de Ulloa'

Respiratory Parameters after Systemic Corticotropin-Releasing Hormone Administration

1991

Neuroanatomical studies on the distribution of corticotropin-releasing hormone (CRH) and its receptors (7) as well as physiological data suggest a regulatory function of endogenous CRH in hypothalamic and extrahypothalamic brain areas [1, 4]. Endogenous CRH acts within the endocrine hypothalamo-pituitary-adrenal axis and affects cardiovascular regulation and respiration through extrahypothalamic pathways. CRH also stimulates gluconeogenesis and release of plasma-catecholamines. Our experiments in humans also demonstrate an influence on respiration and on heart rate activity after systemic application of CRH. Respiratory parameters and heart rate were analyzed during steady-state conditions …

Study of the Pore Network of Dealuminated Faujasites by Water Vapor Adsorption

1991

Summary The adsorption and desorption isotherms of water vapor are drawn at 25°C for dealuminated HY zeolites upon framework Si/Al ratio. The isotherms are compared to that of the parent NaY zeolite. The isotherm changes in shape from the type I to the type IV with an hysteresis loop changing from the type H 4 to the type H 2 , as increases the Si/Al ratio. The POLANYI-DUBININ theory is used to determine the micropore volume accessible to water. It decreases with increasing Si/Al ratios, down to zero at a Si/Al ratio of 35. Such a result is accounted by the adsorption on the hydrophilic centers which are the cations (H + ) associated with the structural aluminium ions, each cation being coo…

Mössbauer Emission Spectroscopy of Mixed-Valency after Nuclear Decay in Iron Complexes

1991

The population of anomalous spin states and aliovalent charge states of iron induced by the 57 Co(EC)57 Fe nuclear decay in polycristalline transition metal compounds was studied by means of Coincidence Mossbauer Emission Spectroscopy (CMES), that is Time-Differential Mossbauer Emission Spectroscopy (TDMES) as well as γ/Xray-Coincidence Mossbauer Emission Spectroscopy (γ/X-CMES). By use of time-integral Mossbauer emission spectroscopy (TIMES) we have observed anomalous high spin (S = 2) states of 57 Fe(II) in the system [57Co/Co(phen)3(ClO 4)2 with increasing intensities on lowering the temperature. With TDMES we followed quantitatively the high spin-low spin relaxation kinetics in this com…