showing 36 of ~574560 from 574555 documents
Personality characteristics analysis in couples undergoing artificial insemination
1994
The personality characteristics of 40 couples admitted into an artificial insemination scheme have been analysed. The personality study was carried out using Cattell's questionnaire 16 PF (form C) and EPI questionnaire (Eysenck Personality Inventory). The results show significant statistical differences between males and females with a greater conformity with the group, in women; women are also bolder and more disciplined from an emotional point of view, whereas men are more radical.
"Niejawne strony oczywistych czynności", czyli "Antropologiczna lektura" tekstów współczesności. Recenzja : Piotr Kowalski, Samotność i wspólnota. In…
1994
Eräitä tieteenteorian peruskysymyksiä ihmistutkimuksen näkökulmasta
1994
Tämä tutkimus koostuu eräiden tieteenteorian keskeisten ongelma-alueiden esittelystä, teoreettisista analyyseista ja analyysien pohjalta teoreettisten näkökulmien hahmottamisesta. Tämän työn pohjana on luentosarja, jonka tekijä on useita kertoja pitänyt lähinnä psykologian ja kasvatustieteen opiskelijoille, joiden opinnot ovat edenneet syventävien opintojen vaiheeseen tai jatko-opintoihin. Tämä lähtökohta huomioon ottaen työ on tarkoitettu lähinnä opiskelumateriaaliksi, johdannoksi tiedon ja tieteen perusteisiin.
Complete Numerical Simulation of Flow Fields in Baffled Stirred Vessels: The Inner-Outer Approach
1994
An update for the definition of reference evapotranspiration
1994
International audience
Feminismo y teoría del discurso
1994
Modificaciones fisarias en el conejo inducidas por campos electromagnéticos
1994
Se efectúa un estudio experimental para valorar los efectos de campos electromagnéticos de dos intensidades diferentes (2,4 y 10 Gauss) sobre la fisis de huesos largos. Se emplearon 45 conejos de 4 semanas divididos en tres grupos de 15 animales, a los que se colocó unas bobinas de Helmholtz en la rodilla derecha durante ocho horas diarias. Cinco animales de cada grupo fueron estimulados (subgrupo testigo). El primer grupo se sacrificó tras cuatro semanas, el segundo tras 12 semanas y el tercero llevó las bovinas durante 12 semanas y luego se sacrificó 12 semanas después para comprobar la duración de los efectos de la corriente. Los resultados demuestran que la diferencia en longitud entre …
Escepticismo y contenido mental
1994
Este trabajo se ocupa del escepticismo acerca del mundo externo y su conocimiento. En la primera sección se intenta mostrar que el internalismo acerca del contenido mental, es decir, la independencia constitutiva entre el contenido de los estados mentales y el mundo externo, es una premisa crucial en la argumentación escéptica. De este modo, la concepción opuesta del contenido mental, o externalismo, de ser correcta, podría cercenar un pilar central en la argumentación escéptica. En la segunda sección se expone brevemente la posición externalista y se formulan tres objeciones a ella desde el punto de vista del internalismo. Las tres secciones siguientes están dedicadas a las posibles respue…
Investigation on the Adsorption of N2 Ar, CO and CH4 on Aluminophosphates
1994
Abstract Adsorption isotherms at different temperatures and isothermal micro-calorimetric curves were measured for N2 Ar, CO, and CH4 on various molecular sieves as VPI-5, MCM-9, AlPO4-8, AlPO4-H, AlPO4-5, SAPO-5, AlPO4-39, AlPO4-C. It was shown that the isosteric heats of adsorption correlated with the pore-sizes of the studied molecular sieves.
Responses of tobacco to elicitins, proteins from Phytophthora spp. eliciting acquired resistance
1994
With the exception of Phytophthora parasitica var. nicotianae (Ppn), the tobacco black-shank causing agent, Phytophthoras give rise to non-host interactions with tobacco. The resulting local hypersensitive response (HR) is accompanied by necrotic spots on the leaves at distance from the infection site [1]. Low molecular weight proteins are excreted by these Phytophthoras, both in planta and in vitro. They form a family of highly homologous holoproteins, called elicitins [2]. Tobacco plants treated with purified elicitins develop necrotic symptoms similar to those induced by the live fungus, and become resistant to further inoculation with Ppn [3]. Elicitin-treated tobacco represent an attra…
Entrenamiento psicológico mediante práctica imaginada aplicado a jóvenes tenistas
1994
Estudio comparativo de dos métodos de radiografías forzadas para detectar la insuficiencia del ligamento cruzado anterior
1994
En 32 pacientes con rotura unilateral de ligamento cruzado anterior (LCA) comprobada mediante artroscopia se efectuó previamente una radiografía forzada de ambas rodillas para estudiar el desplazamiento anterior de la tibia. Cada paciente fue estudiado mediante dos métodos diferentes, Lachman activo radiológico (LAR) y TelosR. Se asumió el diagnóstico radiológico de inestabilidad cuando la diferencia en el desplazamiento entre la rodilla lesionada y su control fue superior a 3 mm. Los resultados demuestran que la diferencia media del desplazamiento entre la rodilla lesionada y la normal fue superior a 3 mm con ambos métodos. En el lado interno 3,7 ± 3,7 mm con el LAR y 4,8 ± 5,8 mm con el T…
Valor del seguimiento densitométrico en la evaluación de una prótesis total de cadera
1994
En este estudio se ha revisado la evolución clínica, radiográfica y densitométrica de 30 Prótesis Totales de Cadera modelo Bihapro, con recubrimiento de Hidroxiapatita. Se han presentado complicaciones clínicas en 3 casos (10%). La evolución ha sido de incremento de la densidad alrededor de la prótesis en el 97% de los casos. El aumento medio de densidad fue de 1 a 1,3 (cociente hueso periprotésico/hueso normal) en el cotilo y de 1,4 a 1,5 en la zona metafisaria (áreas 1 y 7 de Gruen) del fémur. Los resultados clínicos, radiográficos y densitométricos (Sistema CADIA) han sido coincidentes en el 97% de los casos. In this study we have reviewed the clinical, radiographical and densitometric f…
Unusual binding ability of α,β-dehydrodipeptides towards metal ions
1994
Abstract Ni II , Zn II and Co II complexes of α,β-dehydro-dipeptides (containing Gly, Leu, Ala, Val or Phe residues) were studied by potentiometric and spectroscopic methods. Deprotonation and coordination of amide nitrogens occurred in all cases around the physiological pH range. The dipeptides with composition of Xaa-Δ-Ala formed octahedral species, while Gly-Δ-Xaa (Xaa = Leu or Phe) formed square planar bis complexes with Ni II .
Il ruolo del CNR per la promozione dell’innovazione tecnologica
1994
Il saggio esamina gli interventi formativi e progettuali realizzati dal CNR per promuovere l'innovazione tecnologica nel nostro sistema economico.
Acquisition and analysis of aromagrams of Chardonnnay Burgundy wines
1994
El realismo en la cerámica azulejera de Ismael Blat
1994
Contribution to the adsorption voltammetric determination of manganese
1994
The adsorption voltammetric determination of Mn(II) with Bromopyrogallol Red (BPR) and Mordant Red 19 (MDR) has been investigated using a hanging drop mercury electrode. In NH3/NH4Cl solution, ligands and Mn(II) complexes give well separated voltammetric peaks after enrichment onto the electrode. The conditions for determining manganese by adsorption voltammetry with these reagents have been investigated in detail, as has the influence of foreign ions on the determination. The detection limits are 4·10−10 mol/L Mn for BPR and 8·10−10 mol/L Mn for MDR, respectively.
Large- and Fine-Scale Geochemical Variations Along the Andean Arc of Northern Chile (17.5°– 22°S)
1994
Geochemical data from 37 volcanic centres from the active volcanic front in the Central Andes between 17.5° and 22°S of northern Chile provide constraints on crustal contributions to arc magma genesis in that region. Crustal thickness, distance from the trench, height above the seismically active subduction zone, and sediment supply to the trench are all constant along this segment of the arc. The only significant variable along the current arc segment is in mean crustal age (Palaeozoic in the south to Proterozoic in the north). In addition, the crustal thickness has varied through time from around 40 km in the Lower Miocene to about 70 km today. Variations along the N-S chain of the volcan…
Ein Mikro-Atemstromventil für spontan atmende narkotisierte Kleintiere - A Respiratory Micro-Valve for Spontaneously Breathing Anaesthetized Small An…
1994
For the accurate functional analysis of the gas exchange in the lungs or evaluation of artificial oxygen carriers in spontaneously breathing anaesthetized small animals, we developed a new respiratory micro-valve. The body of the valve is made of aluminium, and the flaps are made of silicone rubber. The maximum flow rate in a rat measured with a pneumotachograph and the micro-valve was an average of 19.9 ml/s during inspiration, and 17.8 ml/s during expiration. The pressure measured in the tracheal tube was -0.85 during inspiration, and +0.39 cm H2O during expiration; the end-expiratory pressure in the tube was zero. In two experiments with anaesthetised rats lasting 4-5 hours, ventilation,…
L'ús dels diccionaris escolars
1994
From a study of four cases of real use of school dictionaries a review is made of issues habitually debated in general lexicography which are present particularly in the lexicography of first-language acquisition. Proposals are then made for the use of school dictionaries as a series of learning goals based on parallel reflection on the lexical unit, and an awareness of the assumptions involved in lexicographic conventions.
Study of Collisional Effects on Band Shapes of the ν1/2ν2 Fermi Dyad in CO2 Gas with Stimulated Raman-Spectroscopy .3. Modeling of Collisional Narrow…
1994
0021-9606; High resolution stimulated Raman spectra (SRS) of the ν1/2ν2 Fermi dyad of CO2 have been recorded in the 0.4-22. amagat density range at 700 K and in the 0.6-16 amagat density range at 900 K. The data have been successfully analyzed with a theoretical model taking into account both rotational line mixing through the energy corrected sudden-polynomial (ECS-P) law for the relaxation matrix and vibrational line broadening gamma(v) and line shifting delta(v). The two vibrational parameters have been accurately determined from fit to the experimental spectra. These new high temperature data together with previous data obtained at 295 and 500 K [B. Lavorel et al., J. Chem. Phys. 93, 21…
Hemorheological benefits of omega-3 polyunsaturated fatty acids on erythrocyte deformability in renal transplanted patients
1994
Sauerstoffmetabolismus und intramuraler pH des Dünndarms bei mesenterialer Ischämie und Verhalten der Mikrozirkulation nach hyperton-hyperonkotischem…
1994
Der akute Verschlus der A.mesenterica superior (AMS) fuhrt zu einer Ischamie des gesamten Dunndarms. Der Kollateralkreislauf kann mit unterschiedlichen Kompen-sationsmechanismen [2, 4] nur eine minimale und unzureichende Blutversorgung aufrechterhalten. Abhangig von der Ischamiedauer entsteht eine Gewebeschadigung. Bei der Reperfusion ischamischer Darmanteile werden zahlreiche vasoaktive Me-diatoren freigesetzt und eine Schocksituation verursacht, die den gesamten Orga-nismus beeintrachtigt und bei eingeschrankter Zirkulation eine Verlangerung der Darmischamie bewirkt. Die Tonometrie hat sich in einigen experimentellen Ver-suchsanordnungen als geeignete minimal-invasive Masnahme zur Abschat…
Progression of breast tumors is accompanied by a decrease in expression of the Rho guanine exchange factor Tiam1
1994
In this study, we investigated the expression level of Ras-homologous (Rho) GTPases and the Rho guanine exchange factor (GEF) T-cell lymphoma invasion and metastasis 1 (Tiam1) in breast tumor specimens (n=106) by immunohistochemistry. Rho and Rho-GEF expression scores were compared to clinically established diagnostic and prognostic parameters. We found that RhoA and RhoB scores slightly increased with tumor grade, whereas the Rac1 score remained unaffected. The most significant effects were observed for the Rac1-specific GEF Tiam1. Tiam1 expression scores significantly decreased with the increase in tumor grade, tumor spreading and proliferation. Furthermore, Tiam1 expression was inversely…
Resonance ionization spectroscopy for trace analysis and fundamental research
1994
Resonance ionization spectroscopy (RIS) and its combination with mass spectrometry (RIMS) have grown to become powerful techniques, which offer high sensitivity as well as elemental and isotopic selectivity. The principles of RIS and RIMS are introduced; they primarily concern the analysis of the optical spectra for the choice of efficient excitation schemes and the suitable design of the experimental apparatus. Recent applications span from studies of short-lived isotopes at on-line mass separators to a wide variety of trace analysis applications for radioactive isotopes, which can range from measurements of solar neutrino flux to environmental assessment.
Recent Developments in Monte-Carlo Simulations of First-Order Phase Transitions
1994
In the past few years considerable progress has been made in Monte Carlo simulations of first-order phase transitions and in the analysis of the resulting finite-size data. In this paper special emphasis will be placed on multicanonical simulations using multigrid update techniques, on numerical estimates of interface tensions, and on accurate methods for determining the transition point and latent heat.
Langevin approach to collisional bremsstrahlung in a magnetic field
1994
Délocalisations universitaires : le cas de Nevers
1994
Dezentraliserte Hochschulausbildung. Der Fall Nevers Die schwächeren Ergebnisse, die ein ausgelagerter Studiengang (Nevers) gegenüber den an der «Mutter-Universität» (Dijon) verbliebenen Studenten aufweist, sind aus den unterschiedlichen Voraussetzungen und Motivationen der Studierenden erklärbar. Nevers ist erschwinglicher und zugleich weniger angesehen als Dijon. Chancen, ~Neigungen und Anregungen finden sich eher in Dijon als in Nevers.
Adhesion and cytopathic effect mutants: towards new oral vaccines against rabbit O103 colibacillosis
1994
Welfare State
1994
Vengono descritte e sinteticamente analizzate le trasformazioni del Welfare State nei paesi Occidentali. Viene delineata una prospettiva interpretativa dei processi trasformativi in atto, e di quelli ipotizzabili in una prospettiva di medio termine.
Estrés, apoyo social y ajuste psicológico en padres que maltratan a sus hijos
1994
ResumenLos objetivos de este estudio son: a) examinar los niveles de estres, ajuste psicologico y apoyo social comunitario en padres que maltratan a sus hijos, y b) el rol potencial del apoyo social como variable moduladora en las relaciones entre estres y ajuste psicologico en familias con problemas de maltrato infantil. El nivel global de estres experienciado por los padres, asi como los sucesos y cambios vitales en la unidad familiar fueron evaluados a partir del FILE (McCubbin y cols.), el indice de ajuste psicologico se obtuvo a partir del SCL-90 (Derogatis y cols.) y, finalmente, el apoyo social comunitario fue evaluado mediante el AC-90 (Gracia y Musitu). La muestra se compone de 150…
L'offerta di servizi socio-sanitari e socio-assistenziali nell'area del Progetto AM 20
1994
Prevalence of essential tremor: A door–to-door survey in terrasini, sicily
1994
As part of a door-to-door neuroepidemiologic survey, we investigated the frequency and distribution of essential tremor (ET) in a Sicilian municipality. During phase 1, we administered a screening instrument for tremor to 7,653 persons residing in Terrasini (Palermo province). During phase 2, neurologists evaluated those subjects who had screened positive. The diagnoses, based on specified clinical criteria, were reviewed to increase reliability across neurologists. We found 31 subjects affected by ET (17 men, 14 women); 11 patients (35.5%) reported a familial aggregation. The prevalence of ET as of November 1, 1987, was 405.1 per 100,000 for the total population, and 1,074.9 per 100,000 fo…
Pattern languages with and without erasing
1994
The paper deals with the problems related to finding a pattern common to all words in a given set. We restrict our attention to patterns expressible by the use of variables ranging over words. Two essentially different cases result, depending on whether or not the empty word belongs to the range. We investigate equivalence and inclusion problems, patterns descriptive for a set, as well as some complexity issues. The inclusion problem between two pattern languages turns out to be of fundamental theoretical importance because many problems in the classical combinatorics of words can be reduced to it.
COMPARATIVE-STUDY ON INCLUSION-COMPOUNDS OF 4-BIPHENYLACETIC ACID WITH BETA-CYCLODEXTRIN, HYDROXYPROPYLATED-BETA-CYCLODEXTRINS, AND METHYLATED-BETA-C…
1994
AbstractThe inclusion behavior of Hydroxypropyl-β-Cyclodextrin (HP-β-Cyd) and of methylated-β-Cyclodextrins, heptakis-(2,6-di-O-methyl)-β-Cyclodextrin (DM-β-Cyd) and heptakis-(2,3,6-tri-O-methyl)-β-Cyclodextrin (TM-β-Cyd), in solution and solid state was compared with that of natural β-Cyclodextrin (β-Cyd) using an anti-inflammatory drug, 4-biphenylacetic acid (BPAA), as a guest molecule. The solubility of BPAA with β-Cyd and β-Cyd derivatives in aqueous solution were determined. Stability constants were calculated by phase solubility method at various pH values and temperatures. The formation of inclusion complexes with β-Cyd and β-Cyd derivatives in the solid slate were confirmed by infra…