bluuebunny/crossref_metadata_2025_split huggingface dataset:
Verrucomicrobial methanotrophs grow on diverse C3 compounds and use a homolog of particulate methane monooxygenase to oxidize acetone
Authors: Awala Samuel Imisi , Gwak Joo-Han , Kim Yong-Man , Kim So-Jeong , Strazzulli Andrea , Dunfield Peter F , Yoon Hyeokjun , Kim Geun-Joong , Rhee Sung-Keun 
Published: June 2021

Abstract
Short-chain alkanes (SCA; C2-C4) emitted from geological sources contribute to photochemical pollution and ozone production in the atmosphere. Microorganisms that oxidize SCA and thereby mitigate their release from geothermal environments have rarely been studied. In this study, propane-oxidizing cultures could not be grown from acidic geothermal samples by enrichment on propane alone, but instead required methane addition, indicating that propane was co-oxidized by methanotrophs. “Methylacidiphilum” isolates from these enrichments did not grow on propane as a sole energy source but unexpectedly did grow on C3 compounds such as 2-propanol, acetone, and acetol. A gene cluster encoding the pathway of 2-propanol oxidation to pyruvate via acetol was upregulated during growth on 2-propanol. Surprisingly, this cluster included one of three genomic operons (pmoCAB3) encoding particulate methane monooxygenase (PMO), and several physiological tests indicated that the encoded PMO3 enzyme mediates the oxidation of acetone to acetol. Acetone-grown resting cells oxidized acetone and butanone but not methane or propane, implicating a strict substrate specificity of PMO3 to ketones instead of alkanes. Another PMO-encoding operon, pmoCAB2, was induced only in methane-grown cells, and the encoded PMO2 could be responsible for co-metabolic oxidation of propane to 2-propanol. In nature, propane probably serves primarily as a supplemental growth substrate for these bacteria when growing on methane.
Modeling host-associating microbes under selection
Authors: Bansept Florence , Obeng Nancy , Schulenburg Hinrich , Traulsen Arne 
Published: June 2021

Abstract
The concept of fitness is often reduced to a single component, such as the replication rate in a given habitat. For species with multi-step life cycles, this can be an unjustified oversimplification, as every step of the life cycle can contribute to the overall reproductive success in a specific way. In particular, this applies to microbes that spend part of their life cycles associated to a host. In this case, there is a selection pressure not only on the replication rates, but also on the phenotypic traits associated to migrating from the external environment to the host and vice-versa (i.e., the migration rates). Here, we investigate a simple model of a microbial lineage living, replicating, migrating and competing in and between two compartments: a host and an environment. We perform a sensitivity analysis on the overall growth rate to determine the selection gradient experienced by the microbial lineage. We focus on the direction of selection at each point of the phenotypic space, defining an optimal way for the microbial lineage to increase its fitness. We show that microbes can adapt to the two-compartment life cycle through either changes in replication or migration rates, depending on the initial values of the traits, the initial distribution across the two compartments, the intensity of competition, and the time scales involved in the life cycle versus the time scale of adaptation (which determines the adequate probing time to measure fitness). Overall, our model provides a conceptual framework to study the selection on microbes experiencing a host-associated life cycle.
Ammonia-oxidizing archaea have similar power requirements in diverse marine oxic sediments
Authors: Zhao Rui , Mogollón José M , Roerdink Desiree L , Thorseth Ingunn H , Økland Ingeborg , Jørgensen Steffen L 
Published: June 2021

Abstract
Energy/power availability is regarded as one of the ultimate controlling factors of microbial abundance in the deep biosphere, where fewer cells are found in habitats of lower energy availability. A critical assumption driving the proportional relationship between total cell abundance and power availability is that the cell-specific power requirement keeps constant or varies over smaller ranges than other variables, which has yet to be validated. Here we present a quantitative framework to determine the cell-specific power requirement of the omnipresent ammonia-oxidizing archaea (AOA) in eight sediment cores with 3–4 orders of magnitude variations of organic matter flux and oxygen penetration depth. Our results show that despite the six orders of magnitude variations in the rates and power supply of nitrification and AOA abundances across these eight cores, the cell-specific power requirement of AOA from different cores and depths overlaps within the narrow range of 10−19–10−17 W cell−1, where the lower end may represent the basal power requirement of microorganisms persisting in subseafloor sediments. In individual cores, AOA also exhibit similar cell-specific power requirements, regardless of the AOA population size or sediment depth/age. Such quantitative insights establish a relationship between the power supply and the total abundance of AOA, and therefore lay a foundation for a first-order estimate of the standing stock of AOA in global marine oxic sediments.
The Contribution of Socioeconomic Status to Children's Performance on Three Grammatical Measures in the Edmonton Narrative Norms Instrument
Authors: Weiler Brian , Schneider Phyllis , Guo Ling-Yu 
Published: June 2021

Purpose
The purpose of this study was to evaluate the relative contribution of socioeconomic status (SES) on three grammatical measures—finite verb morphology composite (FVMC), percent grammatical utterances (PGU), and clausal density—in children between the ages of 4 and 9 years.

Method
Data for this study were from the normative sample in the Edmonton Narrative Norms Instrument. For 359 children, hierarchical linear regression was performed to evaluate the amount of variance in FVMC, PGU, and clausal density that was uniquely explained by SES after accounting for child chronological age and language status (typical, impaired).

Results
After child age and language status were controlled, SES was a significant predictor of PGU and clausal density scores, but not of FVMC scores. SES uniquely accounted for 0.5% of variance in PGU scores and 0.8% of variance in clausal density scores.

Conclusions
Consistent with maturational accounts of children's development of tense markers, results of this study offer evidence that, among grammatical measures, FVMC is uniquely robust to variation in SES. Although significant, the variance of PGU and clausal density scores uniquely accounted for by SES was close to minimum. Clinicians can therefore include these three grammatical measures for assessing children of different socioeconomic backgrounds.

Supplemental Material

https://doi.org/10.23641/asha.14810484
Accuracy of Acoustic Measures of Voice via Telepractice Videoconferencing Platforms
Authors: Weerathunge Hasini R. , Segina Roxanne K. , Tracy Lauren , Stepp Cara E. 
Published: June 2021

PurposeTelepractice improves patient access to clinical care for voice disorders. Acoustic assessment has the potential to provide critical, objective information during telepractice, yet its validity via telepractice is currently unknown. The current study investigated the accuracy of acoustic measures of voice in a variety of telepractice platforms.MethodTwenty-nine voice samples from individuals with dysphonia were transmitted over six video conferencing platforms (Zoom with and without enhancements, Cisco WebEx, Microsoft Teams, Doxy.me, and VSee Messenger). Standard time-, spectral-, and cepstral-based acoustic measures were calculated. The effect of transmission condition on each acoustic measure was assessed using repeated-measures analyses of variance. For those acoustic measures for which transmission condition was a significant factor, linear regression analysis was performed on the difference between the original recording and each telepractice platform, with the overall severity of dysphonia, Internet speed, and ambient noise from the transmitter as predictors.ResultsTransmission condition was a statistically significant factor for all acoustic measures except for mean fundamental frequency (fo). Ambient noise from the transmitter was a significant predictor of differences between platforms and the original recordings for all acoustic measures exceptfomeasures. All telepractice platforms affected acoustic measures in a statistically significantly manner, although the effects of platforms varied by measure.ConclusionsOverall, measures offowere the least impacted by telepractice transmission. Microsoft Teams had the least and Zoom (with enhancements) had the most pronounced effects on acoustic measures. These results provide valuable insight into the relative validity of acoustic measures of voice when collected via telepractice.Supplemental Materialhttps://doi.org/10.23641/asha.14794812
The use of information and computer technologies in the conditions of inclusive education
Authors: Tyutryumova Elena , Pomytkina Tatyana 
Published: June 2021

In recent years, significant transformations have been taking place in the preschool education system, caused by changes in the scientific, methodological and material base of education and upbringing of children. One of the important conditions for updating is the use of new information technologies, primarily computer technologies. This allows, on the one hand, to increase the effectiveness of the educational process, on the other hand, to a greater extent to apply an individual approach in the process of teaching and upbringing of both normally developing children and children with various developmental disabilities, including speech.
The article examines the actual problem of realizing the pedagogical potential of using assistive technology devices, such as multimedia correction tools, in the inclusive education of preschool children with severe speech pathologies. The article analyzes domestic and foreign experience of using multimedia technologies in correctional practice. A study was carried out using various available multimedia tools for speech correction; both positive and negative aspects were identified. Based on the results obtained, the author’s method was proposed in the form of a software and hardware complex with biofeedback, which can be effectively used in institutions implementing inclusive education.
Ways of modernization of informational training for university students
Authors: Fomina N. A. , Ivanova D. S. , Somova M.V. , Knyazkova O. V. 
Published: June 2021

The article substantiates the need for informatization of education in general, and higher professional education in particular, requiring the modernization of forms, methods and content of information training of students in the light of the implementation of the program “Digital Economy of the Russian Federation”. The article presents the ways of improving the informational training of university students. The research methods are as follows: analysis of literature, documents, and electronic resources; observation, questioning of participants in the educational process, methods of mathematical statistics. The analysis shows that the project-based method of training, monitoring and control of the content of electronic resources, the integrated use of distant learning systems, online software for collaborative work, the implementation of artificial intelligence technology in education will allow to form the media literacy of future specialists that meets the modern requirements of the economy and society.
The study was conducted on the basis of S.A. Yesenin Ryazan State University in various areas and profiles of education. One of the types of project activities based on modern digital technologies is a hackathon. The goal of such a project is to develop and create a media product in a given professional field. This can be a website, an application, or an interactive software. A team of students is working on a socially significant task. Preparing students for the project-based work by using modern digital technologies has shown its effectiveness for being included in the “Startup as a Degree” Program. The final qualification work prepared in this format may represent a project that is in demand in the field of professional activity. The experimental work of the study was carried out by dividing students into a control group and an experimental group. The range, difference, and significance of changes in the level of informational training in the control and experimental groups were evaluated by the Fischer – Yates criterion. The analysis of individual and collective projects developed by the students, the qualitative analysis of the students’ answers from the both groups to the questions of questionnaires and tests showed that the students of the experimental group revealed a higher level of readiness for professional activity, self-study, self-education, which indicates the effectiveness of the proposed approach.
Methodische Untersuchung zu Mengen- und Spurenelementkonzentrationen in Pferdekotproben unter besonderer Berücksichtigung des Probenentnahmeortes
Authors: Staufenbiel Lydia , Müller Anja-Elvira , Gehlen Heidrun 
Published: June 2021

Zusammenfassung
Gegenstand und Ziel Eine objektive Kontrolle der Mineralstoffversorgung erfolgt bei Pferden in der Praxis nur selten, was eine fehlerhafte Supplementierung zur Folge haben kann. Durch Beurteilung der nutritiven Versorgungslage über die Kotanalyse ließe sich diese diagnostische Lücke schließen. Voraussetzung ist die Kenntnis methodischer Einflussfaktoren auf die Mineralstoffkonzentration in den Kotproben. Vor diesem Hintergrund wurden der Einfluss des Kotprobenentnahmeorts und die Art der Mineralstoffergänzung auf die Konzentration von Mengen- und Spurenelementen in Pferdekotproben evaluiert sowie der methodische Fehler der Gesamtmethode geschätzt.
Material und Methoden Untersucht wurden die Konzentrationen von 6 Mengen- und 22 Spurenelementen in 30 Kotproben von 5 Warmblütern, 3 Haflingern und 2 Ponys, deren Mineralstoffergänzung differierte (keine Supplementierung, berechnete Menge, Mineralleckmasse zur freien Aufnahme). Die an 3 Lokalisationen (kraniales Rektum, Ampulla recti, Kothaufen) gewonnenen Kotproben wurden getrocknet und mittels ICP-OES und ICP-MS analysiert. Neben der deskriptiven Beschreibung des Datensatzes wurden die Effekte der fixen Faktoren Probenentnahmeort und Mineralstoffergänzung auf die Konzentrationen der Elemente im Kot sowie die Wiederholbarkeit und der relative Fehler der Untersuchungsmethode ausgewertet.
Ergebnisse Der Entnahmeort der Kotproben hatte keinen Einfluss auf die Konzentration der einzelnen Elemente. Die Art der Mineralstoffsupplementierung spiegelte sich signifikant und differenziert in den Konzentrationen der Elemente im Kot wider. Die Wiederholbarkeit der Analyseergebnisse war mit einem mittleren Bestimmtheitsmaß von 0,949 (0,894–0,978) und einem mittleren Median für den relativen Fehler von 0,18 (0,01–0,86) hoch.
Schlussfolgerung und klinische Relevanz In der Studie werden die ersten methodischen Randbedingungen zur Bestimmung der Konzentration von Mengen- und Spurenelementen in Pferdekotproben dargestellt. Die Lokalisation der Kotprobenentnahme beeinflusste die Resultate nicht, somit könnte der am wenigsten invasiven Probengewinnung aus einem Kothaufen der Vorzug gegeben werden. Da sich die Art der Mineralstoffergänzung in signifikant unterschiedlichen Elementkonzentrationen in den Kotproben widerspiegelt, kann anhand der Kotprobenkonzentration auf eine unterschiedlich hohe Mineralstoffaufnahme geschlossen werden.
Relationship between clinical signs and hormonal analytical findings in bitches with lactatio sine graviditate
Authors: Ganz Sebastian , Olschewski Carla , Failing Klaus , Bostedt Hartwig 
Published: June 2021

Abstract
Objective Lactatio sine graviditate of the bitch can become clinically relevant in particularly severe manifestations. The aim of the study was to relate the hormone pattern consisting of progesterone (P4), estradiol 17β (E2) and prolactin to the time of occurrence of lactatio sine graviditate in the course of metoestrus and anoestrus as well as to its symptomatology.
Material and methods Sixty-eight bitches with apparent lactatio sine graviditate were divided into 3 groups according to their cycle status. All bitches were examined for gynaecological findings. Furhtermore, their blood progesterone, oestrogen, and prolactin concentrations were determined and compared with the 133-day hormone profile of 7 control animals.
Results Lactatio sine graviditate occurring in early metoestrus was characterised more by a shifted P4:E2 ratio than by hyperprolactinaemia. Overall, the prolactin concentration in the peripheral blood was significantly increased. Analysis of the individual cases revealed that hyperprolactinaemia was present to varying degrees. It could be detected in almost all bitches that showed full symptomatology at the end of metoestrus or at the beginning of anoestrus. Only then clinical signs correlated with an increased prolactin concentration in the peripheral blood. In most cases, the estradiol-17β concentration was within the reference range.
Conclusion and clinical relevance The study indicates that the administration of prolactin inhibitors alone is not indicated in all cases of lactatio sine graviditate and that the timepoint of onset of the clinically relevant symptoms and the current prolactin level should be taken into account in the treatment of affected bitches.
Speedup of nuclear spin diffusion in hyperpolarized solids
Authors: Wang Yu , Takeda Kazuyuki 
Published: June 2021

Abstract
We propose a correction to the coefficient of nuclear spin diffusion by a factor

1
/

1
−

p

̄

2

, where

p

̄

is the average nuclear spin polarization. The correction, derived by extending the Lowe–Gade theory to low-temperature cases, implies that transportation of nuclear magnetization through nuclear spin diffusion accelerates when the system is hyperpolarized, whereas for low polarization the correction factor approaches unity and the diffusion coefficient coincides with the conventional diffusion coefficient valid in the high-temperature limit. The proposed scaling of the nuclear spin diffusion coefficient can lead to observable effects in the buildup of nuclear polarization by dynamic nuclear polarization.
Research on the classification of prosperity indexes of monitoring and early warning of marine development based on grey system theory
Authors: He Yun , Xiao Jianhua 
Published: June 2021

Abstract
This paper adopts the grey relational analysis model in grey system theory to design and construct the leading, synchronous and lagging indicators of monitoring marine development in Guangdong Province. At the same time, Granger causality test is used to verify and analyze the model. The results prove the rationality of the application of gray correlation method in the classification of prosperity indicators and its strong operability, which lays the foundation for the further research of marine monitoring and early warning system.
Exploratory study on key influencing factors of successful implementation of ERP system based on the perspective of grounded theory
Authors: Lin Xinzhu 
Published: June 2021

Abstract
To construct the index system of influencing factors for the successful implementation of ERP system and identify the key influencing factors and their ranking, so as to provide factor reference and policy guidance for the practice process of the implementation of ERP system in the manufacturing industry. In the successful implementation of ERP published five years related text using Nvivo software on the basis of objective data, using qualitative research method of grounded theory to level 3 codes, to build index system of ERP system implementation success factors, and applied to decision making and laboratory (DEMATEL) algorithm to determine important degree of the factors affecting the successful implementation of ERP system. From the four levels of organization, personnel, technology and environment, 13 related indexes were constructed to influence the successful implementation of ERP system, and the key factors were identified: the strength of management support, the level of institutional management, the quality of the system, the strategic literacy level and the strength of education and training. The construction of index system of ERP system implementation success factors from the perspective of exploratory excavation and improve the ERP system online implementation of intrinsic connection between the relevant factors in the process perfects in on-line implementation and maintenance for manufacturing ERP system to provide the reference in the process of theoretical basis, so as to improve the success rate of enterprise implement ERP and provides relevant policy suggestions and reference.
Analysis of music influence on order preference based on TOPSIS algorithm
Authors: Liu Huijiang , Qian Ziyun , Shao Jia 
Published: June 2021

Abstract
Music, as a cultural treasure, is currently difficult to accurately measure its influence due to its special nature. In order to solve this problem, an evaluation model based on TOPSIS is proposed. The influence of music is defined as the combination of the number of followers and the number of followers of the same genre as the influencer, and then the TOPSIS method is used to quantitatively analyze the influence of music. By establishing the original data matrix of relevant music characteristics, and then forward and normalize the data matrix, calculate the distance between the data and the optimal solution and the worst solution, and obtain the quantitative score of the music influence value, a right Accurate measurement of music influence is realized.
Analysis on HR management strategy based on principal component and multivariate regression model
Authors: Fang Yayue 
Published: June 2021

Abstract
Regression analysis is a predictive modeling technology in big data analysis. In the field of statistics, regression analysis is an analytical method to determine the quantitative relationship between two or more variables. As one of the regression analysis methods, the multiple regression model can achieve the purpose of outcome prediction and discriminant analysis in the fields of data mining and economic forecasting. Especially in the case analysis with many influencing factors and complex conditions, the model is established from a linear perspective, and the influence of various factors on the output variables is analyzed through the weights in the obtained results. Combining multivariate analysis with principal component analysis, the main influencing factors can be screened out before correlation analysis, and the linear correlation analysis environment can be filtered to make the linear results more accurate and unsusceptible to extreme samples. This paper collects the data of national enterprise income and its related influencing factors from 2010 to 2020, and establishes a multiple regression model based on principal component analysis to study human resource management in China.