bluuebunny/crossref_metadata_2025_split huggingface dataset:
Propiedades psicométricas de los cuestionarios Reactive/Proactive Questionnaire (RPQ) y How I Think Questionaire (HIT) en estudiantes peruanos
Authors: Rojas Zegarra María Elena , Arias Gallegos Walter Lizandro , Rivera Renzo , Geldres García Jenny Adelí , Starke Moscoso Marlene Alejandra , Apaza Bejarano Evert Nazaret 
Published: May 2020

Abstract: The present study aimed to value the relationships between reactive/proactive aggression and cognitive distortion among adolescents from Arequipa City in Peru, for which it was necessary to realize a psychometric analysis of the tests used. Evaluated were 2,830 high school students (48.9% female and 51.1% male) aged between 13 and 19 years old, with the Reactive/Proactive Aggression Questionnaire and the How I Think Questionnaire. A psychometric analysis was performed to evaluate the validity and reliability of the instruments applied, as well as a correlation analysis to determine the relation between the variables. The psychometric results show a construct validity and reliability of the questionnaires, with adequate fit values and internal consistency; while the correlation analysis reveals that the reactive aggression is weakly related with cognitive distortions, and proactive aggression is moderately related to cognitive distortions. Propiedades psicométricas de los cuestionarios Reactive/Proactive Questionnaire (RPQ) y How I Think Questionaire (HIT) en estudiantes peruanos Key words: Reactive aggression; proactive aggression; cognitive distortion; psychometrics.Resumen: La presente investigación tiene por finalidad valorar las relaciones entre la agresión reactiva/proactiva y las distorsiones cognitivas de adolescentes de la ciudad de Arequipa (Perú), para ello ha sido necesario realizar un análisis psicométrico de los instrumentos utilizados. En ese sentido se evaluó a 2830 estudiantes nivel secundario (48.9% mujeres y 51.1% varones) entre 13 y 19 años de edad, a través del Cuestionario de Agresión Reactiva/Proactiva y el Cuestionario How I Think. Se realizó un procesamiento psicométrico para valorar la validez y la confiabilidad de los instrumentos, así como un análisis de correlación para determinar el grado de relación entre las variables. Los resultados psicométricos dan cuenta de la validez de constructo y la confiabilidad de los instrumentos, que tienen índices adecuados de ajuste y consistencia interna; mientras que el análisis de correlación reveló que la agresión reactiva se relaciona de manera débil con las distorsiones cognitivas, y la agresión proactiva se relaciona de manera moderada con las distorsiones cognitivas.
Aggressive CD34-positive Fibrous Scalp Lesion of Childhood: Extrapulmonary Solitary Fibrous Tumor
Authors: Ramdial P.K. , Madaree A. 
Published: July 2002

Although solitary fibrous tumor (SFT) was originally described as a pleural tumor, an increasing number of extrapleural sites of SFTs have been documented. This has been attributed not only to the heightened awareness of the spectrum of histopathological features that characterizes SFTs but also to the recognition of the role of CD34 immunostaining in soft tissue tumors in general, and in SFTs in particular. Despite the large number of documented extrapleural SFTs in adults, cranial SFTs are rare, having been documented in the meninges, scalp, and infratemporal fossa. Extrapleural SFTs are, to date, an unrecognized entity in children. We document an aggressive fibrous scalp lesion in a 30-month-old female child that demonstrated features common to benign cranial fasciitis and SFT. However, based on bright, diffuse CD34 antigen immunopositivity, a diagnosis of SFT was made. The need to include the CD34 antigen stain in a panel of immunohistochemical markers used to assess spindle cell lesions of childhood is emphasized.
Computer based psychiatric rehabilitation: current activities in Germany
Authors: Olbrich R 
Published: July 2002

SummaryThe present paper deals with computer based training approaches in psychiatric rehabilitation. First an overview of programs is presented, which are currently available on the software market in Germany and appear suitable for the training of patients with information processing (including sensorimotor) deficits. Then a description follows dealing with a clinical setting which may serve to illustrate how computer based cognitive training can be organized in a group format. Finally a couple of clinical studies which have aimed to determine the efficacy of PC based training programs in schizophrenic patients are briefly reviewed.
Family planning in Russia
Authors: Savelyeva G.M. , Gavrilova D.V. , Lobova T.A. 
Published: July 2002

AbstractThe data concerning the abortion rate in Russia for the past 5 years are presented. They demonstrate that abortion has been the main means of birth control. At present, the government, the Ministry of Public Health, obstetricians and gynecologists, and public organizations are making every effort to introduce medical and non‐medical means of contraception.
Confidential enquiry of stillbirths in current obstetric practice
Authors: Tham W.L , Tan K.H , Tee C.S , Yeo G.S.H 
Published: July 2002

AbstractObjective: Confidential panel enquiry into sub‐optimal factors relating to stillbirths. Method: All 121 stillbirths in KK Women's and Children's Hospital in the years 1995 and 1996 were studied. Three assessors reviewed the case records of each death, and panel consensus was reached regarding sub‐optimal antenatal care and factors leading to stillbirths. Result: The incidence rate of stillbirth was 4.04 per 1000 deliveries. A total of 76 cases (62.8%) were found to have grade II and III sub‐optimal factors in their management. Patients themselves were involved in the sub‐optimal management of their own pregnancy in 52.9% of the stillbirths. Primary healthcare givers were involved in 8.3% of all stillbirths, specialist caregivers 12.4% and antenatal care system 4.1%. Conclusion: The study has identified sub‐optimal antenatal management in over 60% of cases. As patients' factors form the major contribution towards sub‐optimal care, management strategy aimed towards improving patients' education and compliance to antenatal care should be a priority.
Association of genital mycoplasma colonization with low birth weight
Authors: Paul V.K , Gupta U , Singh M , Nag V.L , Takkar D , Bhan M.K 
Published: July 2002

AbstractObjective: This study was conducted to document the prevalence of maternal genital tract colonization by Ureaplasma urealyticum and Mycoplasma hominis, and to assess its association with low birth weight (LBW) and prematurity. Methods: The high vaginal swabs of pregnant women in spontaneous labor after 26 weeks of gestation were cultured for U. urealyticum and M. hominis. Clinical details and perinatal outcomes including birth weight and gestation were documented. Results: Of a total of 303 women enrolled, 148 (48.8%) had positive vaginal cultures for U. urealyticum, while only five (1.6%) grew M. hominis. The mean birth weight and the incidences of LBW and preterm neonates among ureaplasma positive and ureaplasma negative mothers were statistically comparable. Conclusions: U. urealyticum emerged as a common inhabitant of the lower genital tract of women in labor, being present in nearly half of them. Its presence was not a risk factor of LBW or prematurity. Maternal colonization with M. hominis was uncommon.
Respective roles of protein tyrosine kinases and protein kinases C in the upregulation of β‐catenin distribution, and compaction in mouse preimplantation embryos: a pharmacological approach
Authors: Goval Jean‐Jacques , Van Cauwenberge Anne , Alexandre Henri 
Published: July 2002

The cellular distribution of β‐catenin was determined by western blotting and laser confocal scanning microscopy in both control and pharmacologically‐manipulated mouse preimplantation embryos. Most of the stored maternal β‐catenin is Triton X—100‐extractable and distributed throughout the cytoplasm. In 2‐cell stage embryos, the remaining molecules are concentrated in regions of cell contact and, to a lesser extent, at non apposed surfaces. Association of β‐catenin with the cortex of non apposed membranes decreases as cleavage proceeds, and is lost at compaction. In contrast to the rapid cross‐linking of cell surfaces induced by wheat germ agglutinin, the diacylglyceride‐induced compaction‐like adhesion of 2‐ and 4‐cell embryos correlates with complete restriction of β‐catenin to the apposing membranes. On the contrary, tyrphostin B46, a specific protein tyrosine kinase inhibitor, fails to induce both premature β‐catenin relocalisation and compaction. In addition, we show that orthovanadate induces a dramatic increase in the level of phosphotyrosine labelling of cell‐cell junctions in compacted 8‐cell stage embryos without inducing their decompaction. However, most of these orthovanadate tyrosine‐phosphorylated proteins are detergent‐soluble, while β‐catenin restricted to the apposing membranes is not.In conclusion, our results confirm that diacylglycerol‐dependent kinases upregulate both β‐catenin redistribution and compaction, and indicate that neither tyrosine kinases, nor tyrosine phosphatases are critical for the proper onset of compaction which seems, in addition, not causally linked to tyrosine dephosphorylation of β‐catenin.
Length control of primary cilia: analysis of monociliate and multiciliate PtK1 cells
Authors: Wheatley Denys N. , Bowser Samuel S. 
Published: July 2002

Summry— Lengths of primary cilia in cultured PtK1 cells, on both a population basis and within individual (multiciliate) cells, have been compared. The latter examines the degree of discrepancy between cilia arising within the same cell and using a common precursor pool, on the hypothesis that a better correlation would be expected between cilia issuing from the same centrosome than between those in the population in general.To obtain accurate et plentiful measurements, a ‘flow—fixation’ technique was devised, which flattens the long primary cilia of cultured PtK1 cells (a kidney epithelial cell line from Potorous tridactylus, the kangaroo rat), prior to immunostaining with an antibody directed against detyrosinated tubulin (ID5). Comparisons of the flow‐fixed measurements with a through‐focus procedure for upright cilia in conventionally fixed cultures showed reasonable agreement, but not as closely as with measurements made on the living cells using the edge‐on method of Roth et al. (J. Cell Sci. 89 (1988) 457).The incidence of multiciliation of confluent PtK1 cells cultures was approximately 5%, of which the majority were biciliates. Although shaft length in general varied considerably, biciliates and multiciliates showed a greater internal consistency, with discrepancies of < 25% in 70% of the cases. On both accounts, this consistency is far poorer than in, for comparison, Chlamydomonas, where its two flagella were < 5% different in length and within 10% tolerance throughout the whole population. Thus, length of primary cilia in PtK1 cell populations is considerably less stringently controlled than in PtK1 cells bearing 9 + 2 cilia, but those issuing from a single multiciliated cell tend to show better correspondence.
Regularizing effects for multidimensional scalar conservation laws
Authors: Cheverry C 
Published: July 2002

In this article, we introduce a general method for studying the smoothing effects resulting from the non linearity in a multidimensional scalar conservation law. It turns out that the regularity of physical solutions is intimately related to a number

Θ

delivered after a scattering procedure. Using this approach, we recover and unify previous information while obtaining new results.

Résumé

Dans cet article, on s’intéresse à l’effet de lissage induit par la non linéarité dans une loi de conservation scalaire multidimensionnelle. Il se trouve que la régularité des solutions entropiques est liée à un nombre

Θ

obtenu à l’issue d’une procédure de scattering. Cette approche permet de retrouver, d’unifier, d’étendre et d’améliorer les résultats antérieurs. Voir Cheverry (1999) pour une présentation concise en français.
Screening For Hypoglycemia In Healthy Term Neonates: Effects On Breastfeeding
Authors: Haninger Nancy C. , Farley Cynthia L. 
Published: July 2002

ABSTRACTTransient hypoglycemia in the early neonatal period is a common adaptive phenomenon as the newborn changes from the fetal state of continuous transplacental glucose consumption to intermittent nutrient supply following cessation of maternal nutrition at birth. Research has demonstrated that in the term, healthy newborn, this dynamic process is self‐limiting and is not considered pathologic.The American Academy of Pediatrics and the World Health Organization recommend that neonatal blood glucose screening be reserved for newborns who are at risk or symptomatic and conclude that universal hypoglycemia screening is inappropriate, unnecessary, and potentially harmful. Nevertheless, many hospital nurseries continue the clinical practice of routine early glucose screening on healthy, term newborns. This results in the misidentification of neonates captured while experiencing the normal, self‐correcting physiologic blood glucose nadir who are then diagnosed with pathologic neonatal hypoglycemia.Subsequent to this misdiagnosis, further surveillance and unnecessary, aggressive treatment interventions will follow that are potentially harmful to the successful establishment of positive maternal‐infant interactions and the breastfeeding experience.Research studies indicate that routine hypoglycemia screens, treatments, and interventions in the healthy infant are not evidence‐based and result in a serious disruption of the initiation process and duration patterns of lactation.Using the perspective of the theory of technology dependency, this inquiry explores the potential adverse sequelae of inappropriate glucose screening in the healthy breastfeeding newborn and describes selected outcome variables including: 1) the consequences of early maternal‐infant separation, 2) the influence of early formula supplementation on breastfeeding discontinuance rates, 3) the effect of separation and supplementation on the onset of lactogenesis, and 4) the impact of hospital staff and provider recommendations of formula supplementation on maternal confidence to independently nurture her baby.
The Optical Constants of Solution‐Processed Semiconductors—New Challenges with Perovskites and Non‐Fullerene Acceptors
Authors: Kerremans Robin , Kaiser Christina , Li Wei , Zarrabi Nasim , Meredith Paul , Armin Ardalan 
Published: May 2020

AbstractAccurate determination of the optical constants of thin film solids has been an ongoing endeavor in optoelectronics and related fields for decades. These constants, namely the refractive index and extinction (or attenuation) coefficient, are the fundamental material properties that dictate electromagnetic field propagation in any medium. They form the inputs to well‐established models that allow for design and optimization of multilayer stack structures such as thin film solar cells, light‐emitting diodes, and photodetectors. These determinations are particularly challenging for materials that are scattering and highly absorbing. In this work, a new and resource‐efficient approach for optical constant determination based upon transmission spectrophotometry in combination with an iterative, reverse transfer matrix model and the Kramers–Kronig relation is reported. The approach is validated using more conventional ellipsometry for a number of functionally important semiconductors, including the recently emergent organic non‐fullerene electron acceptors (NFAs) and perovskites for which the optical constants in the UV–vis–near IR region are provided. Notably, the NFAs are found to present anomalously high refractive indices and extinction coefficients that are predicted to have a profound influence on the cavity electro‐optics of the new record efficiency organic solar cells of which they are key components.
Selective C(sp3)−H Functionalization of Alkyl Esters with N‐/S‐/O‐Nucleophiles Using Perfluoroalkyl Iodide as Oxidant
Authors: Zhao Shi‐Wen , Cai Song‐Zhou , Wang Mao‐Lin , Rao Weidong , Xu Haiyan , Zhang Lei , Chu Xue‐Qiang , Shen Zhi‐Liang 
Published: May 2020

AbstractAn efficient transition metal‐free approach to achieve the selective cleavage of the α‐carbonyl C(sp3)−H bond in alkyl esters by using inexpensive, low‐toxic, and insensitive perfluoroalkyl iodide as the radical initiator has been developed. A variety of enamides, N‐heterocycles, amides, thiophenols, and phenols could be successfully incorporated into functionalized alkyl groups by intermolecular amination, thioetherification, and etherification. The distinguishing features of this CDC reaction are its broad substrate scope, synthetic simplicity, and mild reaction conditions.magnified image
Amorphous TiO2‐Derived Large‐Capacity Lithium Ion Sieve for Lithium Recovery
Authors: Li Xiaowei , Chen Linlin , Chao Yanhong , Chen Wang , Luo Jing , Xiong Jun , Zhu Fengxia , Chu Xiaozhong , Li Huaming , Zhu Wenshuai 
Published: May 2020

AbstractThe lithium titanium oxide ion sieve with good structural stability and high adsorption capacity is generally considered to be a promising adsorbent for lithium recovery. Herein, the lithium ion sieve precursor Li2TiO3 was prepared based on amorphous TiO2, and then Li+ was acid‐eluted to obtain the lithium adsorbent H2TiO3, denoted as HTO‐Am. The structure and adsorption properties of HTO‐Am were investigated, and the results demonstrated that the HTO‐Am prepared at the optimum temperature had excellent adsorption properties for Li+. The adsorption process follows pseudo‐second‐order kinetic and Langmuir isotherm equations, indicating that lithium is adsorbed chemically and monolayer on HTO‐Am. HTO‐Am ion sieves were prepared successfully for the first time and exhibited high selectivity, favorable adsorption rate, and cycle performance for Li+.
Plasma Treatment: a Novel Approach to Improve the Photoelectroactivity of Sb2S3 Thin Films to Water Splitting
Authors: de Araújo Moisés A. , Mascaro Lucia H. 
Published: May 2020

AbstractThe present study reports a novel and fast nitrogen plasma treatment approach to boost hydrogen evolution on antimony(III) sulphide (Sb2S3) thin films via light‐driven water splitting. The Sb2S3 films were synthesised by electrodepositing antimony followed by sulphurisation, and then using different treatment times under nitrogen plasma. The plasma treatment time did not result in significant changes in the microstructural and optical properties, compared to the non‐plasma films. However, the wettability drastically changed from superhydrophobic for the non‐plasma film to hydrophilic once treated. Photoelectrochemical analysis showed a substantial photocurrent density increase (24‐fold) for the film treated for 10 s in comparison with the non‐plasma film. Further characterisation by X‐ray photoelectron spectroscopy and scanning electron microscopy revealed chemical and morphological modifications for the films treated, which explain the enhancement of photoelectroactivity and wettability.
FuSTM: ProM plugin for fuzzy similar tasks mining based on entropy measure
Authors: Amrou M'hand Mouna , Boulmakoul Azedine , Badir Hassan 
Published: May 2020

SummaryOrganizational perspectives of process mining consist of organizing and classifying the organization in terms of missions, roles as well as the interactions between the performers. Social mining is a branch of process mining that centralizes on construction social graphs based on the information held in the process. However, standard clustering approaches are not always proper to business processes as they are known for their complex, flexible, and intrinsic nature. Therefore, fuzzy clustering is capable of identifying indeterminate frontiers that hard clustering omits to identify. In this article, we propose a plugin that applies entropy‐based fuzzy clustering for mining similar tasks using event data. The plugin is intended to be integrated into ProM6 framework as a package. It is the first plugin that uses fuzzy clustering for mining social networks and adopts data‐driven documents library to visualize graphs. The results of the plugins' applicability are illustrated using a case study of a Dutch financial institute.
Intermittent moisture supply induces drought priming responses in some heat‐tolerant chickpea genotypes
Authors: Makonya Givemore M. , Ogola John B.O. , Muasya A. Muthama , Crespo Olivier , Maseko Sipho , Valentine Alex J. , Ottosen Carl‐Otto , Rosenqvist Eva , Chimphango Samson B.M. 
Published: May 2020

AbstractHeat and drought stresses are two abiotic factors that often occur simultaneously and are predicted to increase, consequently hampering plant growth. Response of different species to either stresses is well documented but information on the response of the same genotypes to both stresses in chickpea (Cicer arietinumL.) is limited. We aimed to determine whether previously noted heat‐stress‐tolerant genotype (Acc#7) is drought tolerant, that heat‐sensitive genotype (Acc#8) is drought sensitive, and whether intermittent moisture supply at vegetative stage would induce priming effect to later drought at flowering. At vegetative stage, plants were divided into three groups, nonstressed (watered to 75% field capacity [FC], severe water stress (moisture withholding for 14 d), and treated to 40% FC throughout the experiment (mild stress), with recovery for the severely stressed plants after which they were stressed (double stress) at flowering. Drought treatments at vegetative and flowering growth stages decreased physiological parameters and biomass accumulation in both genotypes except low water supply at 40% FC that decreased biomass in Acc#7 but not Acc#8. Double‐drought stress resulted in priming effect in Acc#7, having higher biomass, chlorophyll fluorescence, stomatal conductance (gs), net photosynthesis, and relative water content (RWC) vs. the introduction of stress only at flowering growth stage as well as in comparison with Acc#8. These results showed that both Acc#7 and Acc#8 are sensitive to drought, whereas after priming, Acc#7 is better acclimated to drought than Acc#8 associated with osmotic adjustment on leaf RWC and higher capacity to protect photosynthetic activity, making Acc#7 potentially ideal for areas associated with intermittent drought spells.