bluuebunny/crossref_metadata_2025_split huggingface dataset:
An adaptive approach to processing and interpretation well testing data in order to build seismic models
Authors: Turenko S. K. , Cherepanov E. A. 
Published: June 2020

The article is devoted to increasing the efficiency of well testing in the construction of seismic models of oil and gas objects. We suggest using the adaptive approach, which has been developed by us, to processing and interpretation of well testing data; it will increase the efficiency of management of the processing and interpretation of well testing data. The essence of the approach consists of dividing the process into stages, developing for each stage a multivariate decision scheme, and formal criteria for evaluating the results.A conceptual framework has been developed for the implementation of the proposed approach as applied to the processing and interpretation of well testing data in order to construct seismic models of terrigenous deposits in Western Siberia. We propose formalized criteria for assessing the quality of processing results of well testing data, modeling of well testing curves, and determination of petro-physical parameters. The results obtained are illustrated on practical data on oil fields in Western Siberia.
Studying of the wall cylindrical rigidity influence on the stress-strain state of the tank during local settlement
Authors: Gruchenkova A. A. , Chepur P. V. , Tarasenko A. A. 
Published: June 2020

The article numerically researched the stress-strain state of the tank RVS-20000 at the settlement zone is located near the tank wall. A numerical model of the tank was developed in accordance with the actual geometric dimensions, taking into account all structural elements of the structure and the maximum operating loads. When modeling local settlement to account for the spatial work of the soil, the model of the Pasternak soil base was used. The stress-strain state calculation of the tank was performed at values of the radius of the drawdown zone from 1 to 10 m. The choice of this interval is due to the fact that in more than 92 % of cases, tanks with local bottom settlements fall within this range of values.The dependences of the maximum acting stresses in the wall of the internal combustion engine on the position of the inhomogeneity area in the soil base are established. The boundary of the zone of action of the edge effect from the tank wall is established. If the center of the heterogeneity area is located in this zone, it is necessary to conduct additional analysis of the tank metal structures stress-strain state when assigning the maximum settlement.
High energy density storage of gaseous marine fuels: An innovative concept and its application to a hydrogen powered ferry
Authors: Taccani Rodolfo , Malabotti Stefano , Dall’Armi Chiara , Micheli Diego 
Published: June 2020

The upcoming stricter limitations on both pollutant and greenhouse gases emissions represent a challenge for the shipping sector. The entire ship design process requires an approach to innovation, with a particular focus on both the fuel choice and the power generation system. Among the possible alternatives, natural gas and hydrogen based propulsion systems seem to be promising in the medium and long term. Nonetheless, natural gas and hydrogen storage still represents a problem in terms of cargo volume reduction. This paper focuses on the storage issue, considering compressed gases, and presents an innovative solution, which has been developed in the European project GASVESSEL® that allows to store gaseous fuels with an energy density higher than conventional intermediate pressure containment systems. After a general overview of natural gas and hydrogen as fuels for shipping, a case study of a small Roll-on/Roll-off passenger ferry retrofit is proposed. The study analyses the technical feasibility of the installation of a hybrid power system with batteries and polymer electrolyte membrane fuel cells, fuelled by hydrogen. In particular, a process simulation model has been implemented to assess the quantity of hydrogen that can be stored on board, taking into account boundary conditions such as filling time, on shore storage capacity and cylinder wall temperature. The simulation results show that, if the fuel cells system is run continuously at steady state, to cover the energy need for one day of operation 140 kg of hydrogen are required. Using the innovative pressure cylinder at a storage pressure of 300 bar the volume required by the storage system, assessed on the basis of the containment system outer dimensions, is resulted to be 15.2 m3 with a weight of 2.5 ton. Even if the innovative type of pressure cylinder allows to reach an energy density higher than conventional intermediate pressure cylinders, the volume necessary to store a quantity of energy typical for the shipping sector is many times higher than that required by conventional fuels today used. The analysis points out, as expected, that the filling process is critical to maximize the stored hydrogen mass and that it is critical to measure the temperature of the cylinder walls in order not to exceed the material limits. Nevertheless, for specific application such as the one considered in the paper, the introduction of gaseous hydrogen as fuel, can be considered for implementing zero local emission propulsion system in the medium term.
A new tablet-based program to support leisure and video calls in people with intellectual and motor disabilities
Authors: Lancioni Giulio E. , Singh Nirbhay N. , O’Reilly Mark F. , Sigafoos Jeff , Grillo Giovanna , Desideri Lorenzo , Alberti Gloria , Campodonico Francesca 
Published: June 2020

BACKGROUND: People with intellectual disability and motor impairment have reduced opportunities to participate in recreational and communication activities. OBJECTIVE: This study reports on the evaluation of a new tablet-based program to help seven participants with mild/moderate or moderate intellectual disability, motor impairment, and limited communication skills to access leisure events and video calls independently. METHODOLOGY: The program relied on the use of a tablet fitted with the WhatsApp Messenger and MacroDroid applications. The leisure and communication options (i.e., music, films, and video calls) were presented in sequences of three. The participant could choose the first, second or third element of the sequence by touching/covering the tablet’s proximity sensor once, twice or three times. The program was evaluated according to a non-concurrent multiple baseline design across participants. RESULTS: During the baseline (i.e., when the program was not in use), the participants failed to access leisure events or video calls independently. During the post-intervention (i.e., with the program), their mean percentages of session time spent with the two types of engagement were within the 80–90 range. CONCLUSION: We conclude that the new tablet-based program can be a fairly efficient and beneficial tool to enable people with intellectual disability and motor impairments to access leisure events and video calls independently.
Potencial de fosfitos na indução da resistência em plantas de soja
Authors: Bruzamarello Janaína , Franceschi Vinicius Tadeu , Dalacosta Nean Locatelli , Gonçalves Iandra , Mazaro Sérgio Miguel , Reis Emerson 
Published: June 2020

O presente trabalho teve como objetivo avaliar o potencial de produtos à base de fosfitos de potássio, cobre e manganês, na ativação da Resistência Sistêmica Adquirida (RSA) em plantas de soja. O delineamento foi inteiramente casualizado, com 5 tratamentos constituídos de fosfito de potássio 0,002%, fosfito de manganês 0,002%, fosfito de cobre 0,002%, Acibenzolar-S-Metil (0,005%) e a testemunha (água destilada), em quatro repetições. O experimento foi realizado na Universidade Tecnológica Federal do Paraná (UTFPR), Campus Dois Vizinhos, em casa de vegetação. A cultivar de soja foi a Nidera 5909, semeada em vasos com capacidade de 10 litros, e as plantas conduzidas até o estádio fenológico R1 (Início do florescimento) momento onde ocorreu os tratamentos. Antes da aplicação dos tratamentos (tempo inicial) e após a aplicação dos tratamentos, em intervalos de 24, 48, 96 e 192 horas, foram realizadas coletas de materiais vegetais para as análises bioquímicas, onde quantificou-se a atividade de enzimas relacionadas à ativação da RSA, sendo a fenilalanina amônia-liase, quitinase e ?-1,3 glucanase. A inoculação dos esporos da ferrugem asiática foi realizada em 48 horas após a aplicação dos tratamentos. Os resultados demonstraram que os fosfitos a base de potássio, cobre, manganês e o ASM, possuem capacidade de ativar enzimas relacionadas à patogenicidade, demonstrando a ativação da Resistência Sistêmica Adquirida em plantas de soja. Tais ativações apresentam especificidade de ação, bem como atuam em mecanismos distintos de defesa.
Minat, Kebudayaan, Pengalaman dan Sumber Informasi Terhadap Hubungan Seksual Pada Masa Kehamilan
Authors: Jamilah Tahta Zulfina 
Published: June 2020

Hubungan seksual adalah kebutuhan biologis yang sulit dikendalikan oleh suami-istri. Banyak pasangan merasa khawatir jika melakukan hubungan seks selama kehamilan karena menurut mereka akan membahayakan bayinya. Pada kehamilan normal, alat kelamin pria tidak dapat melakukan kontak langsung terhadap fetus (calon bayi anda) karena letaknya terlindungi oleh dinding otot uterina dan cairan amniotik. Pada survey pendahuluan yang dilakukan di BPM W ,didapat ibu hamil hamil yang memeriksakan sebanyak 20 orang, ternyata hasil penelitian awal dalam bentuk wawancara tentang hubungan seksual pada masa kehamilan. Dari 20 orang responden terdapat 18 ibu hamil yang mengatakan takut melakukan hubungan seksual dengan pasangannya, sedangkan 2 orang tidak memberikan respon. Dari 18 orang yang paling banyak takut untuk melakukan hubungan seksual dikarenakan kurang informasi yang didapat. Penelitian ini dilakukan untuk mengetahui tingkat pengetahuan ibu tentang hubungan seksual pada saat kehamilan. Penelitian ini bersifat deskriptif yaitu penelitian yang ditujukan untuk mendeskriptifkan suatu keadaan dimasyarakat. Dari hasil penelitian didapatkan bahwa ibu hamil yang berpengetahuan cukup sebanyak 19 responden (38%) dan yang berpengetahuan rendah sebanyak 16 responden (32%) dari 50 responden, minat melakukan hubungan seksual pada masa kehamilan sebanyak 26 responden (52%) , kebudayaan yang berhubungan dengan hubungan seksual pada masa kehamilan sebanyak 25 responden (50%) , pengalaman dalam melakukan hubungan seksual pada masa kehamilan sebanyak 28 responden (56%) , sumber informasi dari media elektronik sebanyak 26 responden (52%) dan yang mendapat sumber informasi dari nakes sebanyak 10 responden (20%) . Kesimpulannya adalah kurangnya pengetahuan ibu hamil terhadap hubungan seksual pada ibu hamil.
Faktor- Faktor yang Mempengaruhi Ibu Nifas tentang Perdarahan Postpartum
Authors: Rachmania Fitri , Zakiah Lela 
Published: June 2020

Berdasarkan data 10 kasus terbanyak di RSUD Cibinong Kabupaten Bogor pada tahun 2016 tercatat pada rekam medik kasus perdarahan postpartum ada sebanyak 38 kasus dan pada tahun 2017 tercatat peningkatan perdarahan postpartum menjadi 102 kasus. Tujuan Penelitian ini dilakukan untuk mengetahui Faktor-Faktor Yang Mempengaruhi Ibu Nifas Tentang Perdarahan Postpartum di RSUD Cibinong Tahun 2017.Penelitian ini menggunakan metode desain survey analitik kualitatif dengan pendekatan Cross Sectional. Populasi sebanyak 1675 responden dan sempel sebanyak 94 responden ibu nifas yang mengalami perdarahan postpartum di RSUD Cibinong. Berdasarkan hasil penelitian, menunjukan bahwa dari total 94 responden ibu nifas yang tidak mengalami perdarahan postpartum, sebanyak 63 (67,0%). berdasarkan umur tidak berisiko sebanyak 53 (56,4%). berdasarkan paritas berisiko, sebanyak 51 (54,3%). berdasarkan pendidikan rendah, sebanyak 53 (56,4%). berdasarkan ibu yang tidak pekerjaan, sebanyak 80 (85,1%). Simpulan ada hubungan antara umur dan paritas. Saran bagi tempat penelitian diharapkan dapat digunakan sebagai masukan dalam meningkatkan pelayanan kebidanan dan diharapkan kepada tenaga kesehatan tetap terus memperhatikan kelengkapan pendokumentasian data rekam medik pasien agar data- data pasien tercatat dengan lengkap dan rapih.
INVESTIGATING CONTENT-BASED READING INSTRUCTION IN PROMOTING STUDENTS’ READING COMPREHENSION: A CLASSROOM ACTION RESEARCH
Authors: Khusniyah Nurul Lailatul , Wadi Ari Safar 
Published: June 2020

This study aimed at describing how content-based reading instruction on students’ reading comprehension. The method used in this current research was a classroom action research. The participants were taken from an EFL classroom of a private madrasah in Narmada. Process of collecting data was taken using test and observation. Teacher and students’ worksheets were the qualitative data collection instrument to assess the reading instruction process. Meanwhile, the test used TOEFL to measure students’ reading comprehension. The research findings show that reading instruction achieved 71.42% in Cycle I and 94.46% in Cycle II. The students’ learning outcome shows 38.89% (Cycle I), and 83.34% (Cycle II). It means that there is a significant improvement of the reading comprehension from cycle I to cycle II. In addition, the students were active, enthusiastic, and participated in reading instruction using CBI.
Accuracy of blood-pressure monitors owned by patients with hypertension (ACCU-RATE study): a cross-sectional, observational study in central England
Authors: Hodgkinson James A , Lee Mei-Man , Milner Siobhan , Bradburn Peter , Stevens Richard , Hobbs FD Richard , Koshiaris Constantinos , Grant Sabrina , Mant Jonathan , McManus Richard J 
Published: June 2020

BackgroundHome blood-pressure (BP) monitoring is recommended in guidelines and is increasingly popular with patients and health professionals, but the accuracy of patients’ own monitors in real-world use is not known.AimTo assess the accuracy of home BP monitors used by people with hypertension, and to investigate factors affecting accuracy.Design and settingCross-sectional, observational study in urban and suburban settings in central England.MethodPatients (n = 6891) on the hypertension register at seven practices in the West Midlands, England, were surveyed to ascertain whether they owned a BP monitor and wanted it tested. Monitor accuracy was compared with a calibrated reference device at 50 mmHg intervals between 0–280/300 mmHg (static pressure test); a difference from the reference monitor of +/−3 mmHg at any interval was considered a failure. Cuff performance was also assessed. Results were analysed by frequency of use, length of time in service, make and model, monitor validation status, purchase price, and any previous testing.ResultsIn total, 251 (76%, 95% confidence interval [95% CI] = 71 to 80%) of 331 tested devices passed all tests (monitors and cuffs), and 86% (CI] = 82 to 90%) passed the static pressure test; deficiencies were, primarily, because of monitors overestimating BP. A total of 40% of testable monitors were not validated. The pass rate on the static pressure test was greater in validated monitors (96%, 95% CI = 94 to 98%) versus unvalidated monitors (64%, 95% CI = 58 to 69%), those retailing for >£10 (90%, 95% CI = 86 to 94%), those retailing for ≤£10 (66%, 95% CI = 51 to 80%), those in use for ≤4 years (95%, 95% CI = 91 to 98%), and those in use for >4 years (74%, 95% CI = 67 to 82%). All in all, 12% of cuffs failed.ConclusionPatients’ own BP monitor failure rate was similar to that demonstrated in studies performed in professional settings, although cuff failure was more frequent. Clinicians can be confident of the accuracy of patients’ own BP monitors if the devices are validated and ≤4 years old.
Définition d'un principe de limitation de modules dans la détermination et le calcul des intégrales des équations différentielles ordinaires par des itérations intégrales convergentes. Application à des systèmes du premier ordre
Authors: Lahaye Edmond 
Published: June 2020

En introduisant un principe de limitation du module de certaines expressions dans le calcul, par la méthode des approximations successives, des intégrales de systèmes d'équations différentielles ordinaires, nous démontrons que la convergence uniforme est réalisée en tout point d'une courbe du domaine complexe de longueur arbitrairement grande, ne contenant aucune singularité. Dans ces conditions, les relations qui interviennent dans la méthode des approximations successives sont définies comme étant des itérations intégrales convergentes.
Dans cette Note, la méthode est appliquée à des systèmes d'équations différentielles du premier ordre.
Effets de la désoxycorticostérone, du glucagon et de l'insuline, sur le rapport isotopique 13C/12C du C02 respiratoire, chez le rat
Authors: Mosora Florentina , Lacroix Marcel , Pontus Micheline , Duchesne Jules 
Published: June 2020

Les auteurs démontrent qu'il n'est possible de mettre nette¬ ment en évidence l'effet de la désoxycorticostérone, du glucagon et de l'insuline, sur le δ13C caractérisant le CO2 exhalé par le rat normalement nourri, que si celui-ci a subi l'ablation des glandes ou la destruction des cellules qui provoquent la sécrétion de l'hormone en cause.
L'interprétation qualitative des effets observés, dans ces conditions, est liée au fait de l'influence variable des hormones considérées, dans le déterminisme de la formation du CO2.
Sur les variétés isotropes de défaut et de codimension 2 et qui sont munies d'une structure presque cosymplectique
Authors: Rosca Radu 
Published: June 2020

Fn+ 1,n étant un espace pseudo-euclidien réel de signature (ni + l,n) on étudie l'inclusion x : [formule] d'une variété isotrope [formule] dont le défaut et la codimension sont égales à 2. L'espace normal ponctuel [formule] est déterminé par deux vecteurs isotropes réels [formule] et est contenu dans l'espace tangent ponctuel [formule]. On munit [formule] d'une structure presque cosymplectique [formule] qui est telle que le champ de Reeb ξ est un vecteur temporel, et [formule]. La forme métrique fondamentale [formule] est exprimée par [formule] où [formule] est une forme quadratique parahermitienne permutable avec [formule].
Une inclusion x, telle que les deux secondes formes quadratiques qui lui sont associées soient conformes à [formule] est dénommée une inclusion conformément parahermitienne (i.c.p.). Une pareille inclusion est non substantielle (dans le sens de K. Yano et B. Y. Chen [1]), et elle met en évidence une 1-forme a qui est une section différentiable locale de l'espace cotangent [formule]. Si a est fermée, alors la parenthèse de Lagrange pfaffienne l(a) par rapport à [formule] de a est incompressible sur [formule]. Différentes autres considérations sont faites concernant une i.c.p.
Tests de générateurs pseudo-aléatoires
Authors: Devillers Raymond , Dumont J. J. , Latouche Guy 
Published: June 2020

In computers, pseudo-random numbers are usually generated through a linear congruential sequence.
Coveyou and MacPherson [1] propose a test of the randomness of n-uples, Dieter [2] proposes another test for the pairs ; both are theoretical tests.
These are described and applied to some generators.
Arithmetic routines handling integer numbers without limitation of size have been developped to implement the first test, they are outlined in the paper.
Analysis of the solar spectrum : Results for the range λ 6105.0 -λ 6116.5
Authors: Dingens Paul , Steyaert Herman , Baeck Nicole 
Published: June 2020

Abstract. — Applying the method proposed earlier for decomposing the solar spectrum into Gaussian components, the results obtained for the interval λ 6116.5 - λ 6132.0 are given here.
Table I lists 67 components, with their central wavelength, equivalent width, (reciprocal) standard deviation and tentative identification.
Analysis of the solar spectrum : Results for the range λ 6132.0 -λ 6150.0
Authors: Steyaert Herman 
Published: June 2020

Abstract. — Applying the method proposed earlier for decomposing the solar spectrum into Gaussian components, the results obtained for the interval λ 6132.0 - λ 6150.0 are given here.
Table I lists 93 components, with their central wavelength, equivalent width, (reciprocal) standard deviation and tentative identification.
Étude cinétique de la synthèse des carbocyanines. I. Aminolyse des sels de ß-ethylthiovinyl-2 cycloammoniums
Authors: Guillaume A. , Bruylants Albert 
Published: June 2020

Summary. — Salts of β-ethylthiovinyl cycloammoniums are generated, as stable intermediates, during the synthesis of carbocyanines starting from orthoesters and quaternary salts with activated methyl groups. In order to set up a reaction scheme of this synthesis, reactivity of these intermediates towards nucleophiles was investigated. Therefore, kinetical parameters of the reaction of 2(β-ethylthiovinyl) 1,3,3-trimethyl indoleninium iodide (trans form) with a series of anilines were determined.
The reaction is looked at in acetonitrile at 25 °C. The observed rate constant (κapp.) follows the equation :
[formule]
pointing out the double part played by the anilines (A).
Triple collision as un unstable equilibrium
Authors: Waldvogel Jörg 
Published: June 2020

The family of trajectories near a triple collision solution in the planar problem of three bodies is investigated by means of linearization in the neighbourhood of the parabolic free fall. The local topological structure of this family is found to be that of a saddle point in the R8. The corresponding stable manifold is the set of all triple collision solutions, whereas the instable manifold is formed by the parabolic solutions.
In important cases of nonzero total energy the family of close encounters is quantitatively described in terms of hypergeometric functions. By means of homothetic transformations the close triple encounters are then related to three-body motion with zero energy and zero angular momentum. In this way almost all close encounters near a homothetic solution can be treated by using a small number of particular solutions of the three-body problem that may be calculated once for all.
In practical examples the first order theory presented here predicts the escape velocity after a close triple encounter with a relative accuracy comparable to the closeness of the encounter.
Influence de la température sur le comportement des systèmes chimiques non linéaires
Authors: Colle P. 
Published: June 2020

L'analyse linéaire du comportement du modèle trimoléculaire montre quelle est l'influence de la température sur le nombre d'états stationnaires uniformes, la stabilité et les oscillations éventuelles autour de ces états.
Des précisions au sujet des valeurs critiques des paramètres de bifurcation sont obtenues. La méthode de calcul de perturbations décrite par J. F. G. Auchmuty et G. Nicolis est appliquée pour établir la forme approchée d'une structure spatiale stationnaire.
Sur la diffraction dans les problèmes aux limites
Authors: Léonard Paul , Wuidar José 
Published: June 2020

In the analytic case, any ray through a diffiractive point coincides with either the space-bicharacteristic or the boundary-bicharacteristic through itself.
In the Cœ situation, this property does not hold, we give examples of diffractive points as limits of reflective or diffractive points.
In [4], R. B. Melrose and J. Sjöstrand consider propagation of Cœ singulari-
ties. We prove our results by extending their study of sequences of reflections
and applying [3] and chapter X in [6].
To construct an example of a converging sequence of reflections, we follow an idea of M. E. Taylor [5], fitting a C«, convex boundary to an infinite convex polygon representing the projection of the ray in IR2.