bluuebunny/crossref_metadata_2025_split huggingface dataset:
Topologies for Battery and Supercapacitor Interconnection in Residential Microgrids with Intermittent Generation
Authors: Narvaez Cubillos Eider Alexander , Cortés Guerrero Camilo Andrés , Trujillo Rodríguez Cesar Leonardo 
Published: August 2020

Context:This paper presents a comparative study of the performance of three topologies for interconnecting Lithium ion batteries and supercapacitors in a hybrid energy storage system for use in electric residential microgrids with intermittent generation. The hybrid system’s main purpose is to prolong battery life, using the supercapacitor to handle the dynamic component of current from a pulsed current load. This work builds upon a preliminary simulation-based study, in which two semi-active topologies were compared and evaluated. Here, we add an active topology to the study and describe the operational benefits of each topology.
Method:For every topology in this study, a non-isolated half-bridge bidirectional DC converter was used, and a proportional–integral (PI) double-loop linear ACC control algorithm was designed for controlling the converters. In the active topology an additional optimisation-based real-time frequencydecoupling control strategy was employed.
Results:A parallel active topology allows better management of stored energy in the SC by supporting variation of SC terminal voltages with a DC converter as interface to the DC bus.
Conclusions: Semi-active topologies are easier to design and control, but the operational benefits of supercapacitors require voltage variation at the terminals. This variation is made possible with an active topology.
Acknowledgements: First author thanks Universidad Distrital Francisco Jos´e de Caldas for the financial support in his doctoral studies through the study commission contract N° 000101-2016.
Plasma amino acid levels in a cohort of patients in Turkey with classical phenylketonuria
Authors: Halil Kazanasmaz , Meryem Karaca 
Published: August 2020

Abstract

Background
In patients with phenylketonuria, the central nervous system is adversely affected by noncompliance with diet. The levels of phenylalanine and many different amino acids (AAs) in the plasma of patients with phenylketonuria can be measured simultaneously.

Objectives
To measure the blood plasma levels of neurotransmitter AAs in a cohort of patients in Sanliurfa province, Turkey, with phenylketonuria for use as a support parameter for the follow-up of patients.

Methods
The phenylketonurics that we followed (n = 100) were divided into 2 groups according to their compliance with their dietary treatment. Plasma AA analysis results of phenylketonurics were compared with those of healthy children in a control group (n = 50).

Results
In the diet incompliant group (n = 56), the mean levels of γ-aminobutyric acid (GABA; 0.96 ± 1.07 μmol/L) and glycine (305.1 ± 105.19 μmol/L) were significantly higher than those in the diet compliant group (n = 44; GABA P = 0.005, glycine P < 0.001) and in the control group (GABA and glycine P < 0.001), whereas the mean levels of glutamic acid (39.01 ± 22.94 μmol/L) and asparagine (39.3 ± 16.89 μmol/L) were lower (P < 0.001) in the diet incompliant group. A positive correlation was observed between the levels of phenylalanine and GABA and glycine. A negative relationship was found between the levels of phenylalanine and glutamic acid and asparagine.

Conclusions
A relationship exists between the levels of plasma phenylalanine in a cohort of phenylketonurics in Sanliurfa province, Turkey, and the levels of some excitatory and inhibitory AAs. Excitatory and inhibitory AA levels in plasma may be used as support parameters in the follow-up of patients with phenylketonuria.
Geschäftsprozesse im Fachreferat
Authors: Grützner Agnes , Kohl-Frey Oliver 
Published: August 2020

Zusammenfassung
Der vorliegende Aufsatz befasst sich mit einer Analyse der Geschäftsprozesse im Fachreferat an der Universität Konstanz. Dazu werden zunächst die Rahmenbedingungen an der Universität Konstanz dargestellt, insbesondere die durch die Fusion von Bibliothek und Rechenzentrum zum Kommunikations-, Informations-, Medienzentrum (KIM) entstandenen Veränderungen. Nach einem kurzen allgemeinen Überblick über Geschäftsprozesse werden die Vorgehensweise und die Ergebnisse der Konstanzer Analyse vorgestellt. Abschließend wird der weitere Umgang mit den Ergebnissen sowie das praktische Vorgehen diskutiert.
OCR-D kompakt: Ergebnisse und Stand der Forschung in der Förderinitiative
Authors: Engl Elisabeth 
Published: August 2020

Zusammenfassung
Bereits seit einigen Jahren werden große Anstrengungen unternommen, um die im deutschen Sprachraum erschienenen Drucke des 16.–18. Jahrhunderts zu erfassen und zu digitalisieren. Deren Volltexttransformation konzeptionell und technisch vorzubereiten, ist das übergeordnete Ziel des DFG-Projekts OCR-D, das sich mit der Weiterentwicklung von Verfahren der Optical Character Recognition befasst. Der Beitrag beschreibt den aktuellen Entwicklungsstand der OCR-D-Software und analysiert deren erste Teststellung in ausgewählten Bibliotheken.
„Innerlich frischer und wachstumsfähiger Nachwuchs“
Authors: Bohn Anna 
Published: August 2020

ZusammenfassungEdgar Breitenbach war von 1953 bis 1955 als Vertreter der Library of Congress beratend für den Bau der Amerika-Gedenkbibliothek in Berlin tätig. Als einer der Volontäre des ersten Jahrgangs des neu begründeten bibliothekswissenschaftlichen Ausbildungswegs an der Friedrich-Wilhelms-Universität und der Preußischen Staatsbibliothek zu Berlin im Studienjahr 1928/1929 gelangte er auf einen Berufsweg, auf dem er zu einem Wegbereiter neuer Entwicklungen wurde. Der Beitrag untersucht, welche Rolle sein engagierter Förderer Aby Warburg sowie Netzwerke und Empfehlungsschreiben von Bibliotheksdirektoren für den Beginn der Bibliothekskarriere Edgar Breitenbachs in der ausgehenden Weimarer Republik spielten. Zur Rekonstruktion der bibliothekarischen Entwicklungen dienen Erinnerungen, Korrespondenzen und Personalakten aus der Staatsbibliothek zu Berlin, dem Institut für Stadtgeschichte Frankfurt, der Staats- und Universitätsbibliothek Göttingen, der New York Public Library, der Smithsonian Institution, Archives of American Art, Washington D.C. und dem Warburg Institute London. Am Rande gestreift werden die Karrieren zweier Volontärinnen, Katharina Meyer und Gisela von Busse, die gemeinsam mit Breitenbach 1929 an der Preußischen Staatsbibliothek zu Berlin ihre Prüfung absolvierten.
Das SLUB TextLab: Offene Werkstatt für analoge und digitale Textarbeit
Authors: Santner Anita 
Published: August 2020

Zusammenfassung
Auf der Suche nach einem neuen Raumnutzungskonzept für die Zweigbibliothek Erziehungswissenschaft wurde an der SLUB Dresden in den letzten zwei Jahren das SLUB TextLab entwickelt. In Zusammenarbeit mit lokalen Kooperationspartnern unterstützt es Nutzer bei der analogen und digitalen Textarbeit. Die Kombination von Schreibberatung, Digital Humanities und Embodiment in einer wissenschaftlichen Bibliothek als Dritter Ort ist innovativ und zukunftsrelevant, da Bibliotheken aufgrund der zunehmenden Digitalisierung und dem damit verbundenen Rückgang des physischen Bestandes ein neues Profil entwickeln müssen.
MYL6B drives the capabilities of proliferation, invasion, and migration in rectal adenocarcinoma through the EMT process
Authors: Li Jin-Liang , Wang Zai-Qiu , Sun Xiao-Li 
Published: August 2020

AbstractObjectiveThis study was designed to explore the biological significance of myosin light chain 6B (MYL6B) in rectal adenocarcinoma.MethodsProfiles on the Oncomine dataset, GEPIA website, and UALCAN-TCGA database were searched to assess the MYL6B expression level in rectal adenocarcinoma tissues and normal tissues. After MYL6B knockdown using siRNA strategy, cell counting kit-8 (CCK-8) and transwell assays were conducted to measure cell proliferation, migration and invasion, respectively. Flow cytometry analysis was conducted to assess cell apoptosis. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and western blot were performed to detect the expression level of mRNAs and proteins.ResultsThe data showed that overexpression of MYL6B was observed in rectal adenocarcinoma tissues and correlated with a poor prognosis of patients. Functional in vitro experiments revealed that MYL6B knockdown could inhibit proliferation, migration, and invasion of rectal adenocarcinoma cells, while promote cell apoptosis. Moreover, western blot analysis suggested that increased expression of E-cadherin and decreased expression of N-cadherin and Vimentin were induced by si-MYL6B.ConclusionIn summary, this study elaborated on the promoting effect of MYL6B in rectal adenocarcinoma progression, thus providing novel insight for strategies of clinical diagnosis and drug application in the future clinical study.
Long non-coding RNA LINC00704 promotes cell proliferation, migration, and invasion in papillary thyroid carcinoma via miR-204-5p/HMGB1 axis
Authors: Lin Yihui , Jiang Jianjia 
Published: August 2020

AbstractPapillary thyroid carcinoma (PTC) is a common malignancy worldwide. LncRNA LINC00704 (mitotically associated long non-coding RNA) was reported as a crucial regulator in PTC. However, the biological mechanism of LINC00704 action remains unclear in PTC. The mRNA levels of LINC00704, miR-204-5p, and high-mobility group box 1 (HMGB1) were measured by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) assay. HMGB1, proliferating cell nuclear antigen (PCNA), and cyclin D1 protein levels were detected using the Western blot assay. The binding relationship between miR-204-5p and LINC00704 or HMGB1 was predicted by LncBase Predicted v.2 or TargetScan, respectively, and then validated by dual luciferase reporter assay. Cell viability, cell cycle, cell migration and invasion, and migration ratio were assessed by MTT, flow cytometry, transwell cell migration and invasion, and wound-healing assays, respectively. Results suggested that LINC00704 and HMGB1 were elevated and miR-204-5p decreased in PTC tissues and cells. Furthermore, rescue experiments demonstrated that the miR-204-5p inhibitor alleviated the inhibitory effects of LINC00704 knockdown on cell proliferation, cell cycle, migration, and invasion. Meanwhile, miR-204-5p overexpression repressed proliferation, migration, and invasion by targeting HMGB1. Mechanical analysis discovered that LINC00704 could act as an miR-204-5p sponge to modulate HMGB1 expression. In conclusion, LINC00704 promoted PTC cell proliferation, cell cycle, migration, and invasion by the miR-204-5p/HMGB1 axis, providing a novel therapeutic target for PTC patients.
Seagrass characterization on the southern Pacific coast of Costa Rica: history, vegetation, and environment
Authors: Samper-Villarreal Jimena , Cortés Jorge 
Published: August 2020

Abstract
Seagrass conservation and management requires scientific understanding of spatial and temporal variability, information that is currently limited for the Eastern Tropical Pacific (ETP). Here, we analysed seagrass presence based on previous reports, herbarium collections and stakeholder knowledge, combined with field characterization in Golfo Dulce, southern Pacific coast of Costa Rica. Seagrasses were found at multiple locations along a narrow border close to shore and in up to 6 m depth within Golfo Dulce, dating back to 1969. Two seagrass species were found, Halophila baillonii and Halodule beaudettei. Seagrass biomass values for Golfo Dulce (12.0 ± 8.5 g DW m−2) were lower and water nutrient concentrations were higher than previously reported in the gulf. Shoot density (1513 ± 767 shoots m−2) was similar to previous reports. Stable isotope values in seagrass were −11.3 ± 1.0‰ δ13C and 1.2 ± 0.9‰ δ15N; while those in sediments were −26.1 ± 1.3 and 2.5 ± 0.9‰. In Golfo Dulce, isotopic values of both seagrass species do not overlap with other known primary producers. Management strategies should aim to minimize known seagrass stressors, protect potential seagrass habitat, and take into account the dynamic life strategies of the two seagrass species found.
Automation and validation of a MALDI-TOF MS (Mass-Fix) replacement of immunofixation electrophoresis in the clinical lab
Authors: Kohlhagen Mindy , Dasari Surendra , Willrich Maria , Hetrick MeLea , Netzel Brian , Dispenzieri Angela , Murray David L. 
Published: August 2020

Abstract

Objectives
A matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) method (Mass-Fix) as a replacement for gel-based immunofixation (IFE) has been recently described. To utilize Mass-Fix clinically, a validated automated method was required. Our aim was to automate the pre-analytical processing, improve positive specimen identification and ergonomics, reduce paper data storage and increase resource utilization without increasing turnaround time.

Methods
Serum samples were batched and loaded onto a liquid handler along with reagents and a barcoded sample plate. The pre-analytical steps included: (1) Plating immunopurification beads. (2) Adding 10 μl of serum. (3) Bead washing. (4) Eluting the immunoglobulins (Igs), and reducing to separate the heavy and light Ig chains. The resulting plate was transferred to a second low-volume liquid handler for MALDI plate spotting. MALDI-TOF mass spectra were collected. Integrated in-house developed software was utilized for sample tracking, driving data acquisition, data analysis, history tracking, and result reporting. A total of 1,029 residual serum samples were run using the automated system and results were compared to prior electrophoretic results.

Results
The automated Mass-Fix method was capable of meeting the validation requirements of concordance with IFE, limit of detection (LOD), sample stability and reproducibility with a low repeat rate. Automation and integrated software allowed a single user to process 320 samples in an 8 h shift. Software display facilitated identification of monoclonal proteins. Additionally, the process maintains positive specimen identification, reduces manual pipetting, allows for paper free tracking, and does not significantly impact turnaround time (TAT).

Conclusions
Mass-Fix is ready for implementation in a high-throughput clinical laboratory.
The metric geometry of singularity types
Authors: Darvas Tamás , Di Nezza Eleonora , Lu Hoang-Chinh 
Published: August 2020

Abstract
Let X be a compact Kähler manifold. Given a big cohomology class

{
θ
}

{\{\theta\}}

, there is a natural equivalence relation on the space of θ-psh functions giving rise to

𝒮
⁢

(
X
,
θ
)

{\mathcal{S}(X,\theta)}

, the space of singularity types of potentials. We introduce a natural pseudo-metric

d
𝒮

{d_{\mathcal{S}}}

on

𝒮
⁢

(
X
,
θ
)

{\mathcal{S}(X,\theta)}

that is non-degenerate on the space of model singularity types and whose atoms are exactly the relative full mass classes. In the presence of positive mass we show that this metric space is complete. As applications, we show that solutions to a family of complex Monge–Ampère equations with varying singularity type converge as governed by the

d
𝒮

{d_{\mathcal{S}}}

-topology, and we obtain a semicontinuity result for multiplier ideal sheaves associated to singularity types, extending the scope of previous results from the local context.
Investigation of post-weld heat treatment (T6) and welding orientation on the strength of TIG-welded AL6061
Authors: Haryadi Gunawan Dwi , Dewa Rando Tungga , Ekaputra I. M. W. , Suprihanto Agus 
Published: August 2020

Abstract
This paper investigates the influence of T6 post-weld heat treatment (PWHT), and welding orientation on the strength and microstructure of tungsten inert gas (TIG) welded AL6061 aluminum alloy. The TIG process was used to weld the AL6061 at the transversal and longitudinal orientations with reference to the rolling direction. The T6-PWHT is a two-phase heat treatment process, and was applied to AL6061 in order to increase its strength. This T6 was carried out under three different artificial aging; 8, 18, and 24 hours. The influence of PWHT and welding orientation on the strength of AL6061-T6 were investigated through a series of tensile and microhardness tests. In addition, the microstructure observations were performed using the optical and scanning electron microscopes. It was established that the strength and microstructural characteristics of AL6061 are significantly dependent on the T6 artificial aging. Accordingly, the improvements in the strength and ductility were mainly contributed by the grain growth and subsequent precipitate strengthening. Moreover, the welding orientation only affects their fracture surfaces and locations after tensile testing.
Application of the terrestrial laser scanner in the monitoring of earth structures
Authors: Kogut Janusz P. , Pilecka Elżbieta 
Published: August 2020

Abstract
Terrestrial laser scanning (TLS) assists in the detection of the unsafe behaviour of slopes and scarps. It also facilitates the assessment of the stability of earthworks. Earth structures are those that are usually made of qualified ground material. One may distinguish between point structures such as mounds, forts and dams, and linear structures such as roads, railways and flood embankments. This article concerns the problem of monitoring and analysing of the effects associated with the unstable behaviour of selected earth structures. TLS enables remote sensing of surface changes in a simple and automated manner. Regular, multiple measurements with the laser scanner are applied in long-term monitoring of the behaviour of the selected objects. The discrete numerical models using, for example, the finite element method (FEM) take into account geotechnical properties of substrate and allow for the risk assessment and stability testing of such structures. The numerical model of the structure along with the parameters of the substrate are introduced into the FEM package. This allows for the analysis of stresses, strains and displacements, along with different loading cases. The work here presents a few selected earth structures for which the aforementioned analyses have been undertaken.
Application of simulated annealing algorithm for 3D coordinate transformation problem solution
Authors: Odziemczyk Waldemar 
Published: August 2020

AbstractTransformation of spatial coordinates (3D) is a common computational task in photogrammetry, engineering geodesy, geographical information systems or computer vision. In the most frequently used variant, transformation of point coordinates requires knowledge of seven transformation parameters, of which three determine translation, another three rotation and one change in scale. As these parameters are commonly determined through iterative methods, it is essential to know their initial approximation. While determining approximate values of the parameters describing translation or scale change is relatively easy, determination of rotation requires more advanced methods. This study proposes an original, two-step procedure of estimating transformation parameters. In the initial step, a modified version of simulated annealing algorithm is used for identifying the approximate value of the rotation parameter. In the second stage, traditional least squares method is applied to obtain the most probable values of transformation parameters. The way the algorithm works was checked on two numerical examples. The computational experiments proved that proposed algorithm is efficient even in cases characterised by very disadvantageous configuration of common points.
Green synthesis: Proposed mechanism and factors influencing the synthesis of platinum nanoparticles
Authors: Jameel Mahmood S. , Aziz Azlan Abdul , Dheyab Mohammed Ali 
Published: August 2020

AbstractPlatinum nanoparticles (Pt NPs) have attracted interest in catalysis and biomedical applications due to their unique structural, optical, and catalytic properties. However, the conventional synthesis of Pt NPs using the chemical and physical methods is constrained by the use of harmful and costly chemicals, intricate preparation requirement, and high energy utilization. Hence, this review emphasizes on the green synthesis of Pt NPs using plant extracts as an alternative approach due to its simplicity, convenience, inexpensiveness, easy scalability, low energy requirement, environmental friendliness, and minimum usage of hazardous materials and maximized efficiency of the synthesis process. The underlying complex processes that cover the green synthesis (biosynthesis) of Pt NPs were reviewed. This review affirms the effects of different critical parameters (pH, reaction temperature, reaction time, and biomass dosage) on the size and shape of the synthesized Pt NPs. For instance, the average particle size of Pt NPs was reported to decrease with increasing pH, reaction temperature, and concentration of plant extract.
Green synthesis of 3-(1-naphthyl), 4-methyl-3-(1-naphthyl) coumarins and 3-phenylcoumarins using dual-frequency ultrasonication
Authors: Vashisth Neeraj , Sharma Satya Parkash , Kumar Surender , Yadav Aruna 
Published: August 2020

AbstractGreen synthesis of 3-(1-naphthyl), 4-methyl-3-(1-naphthyl) coumarins and 3-phenylcoumarins has been carried out in one step by reacting 2-hydroxybenzaldehydes and 2-hydroxyacetophenones with 1-naphthylacetic anhydride and phenylacetic anhydride, respectively, using dual-frequency ultrasonication, i.e. ultrasonic bath of 40 kHz and probe of 20 kHz. The compounds were obtained in very high yield (80–90%) and their structures were confirmed by infrared and nuclear magnetic resonance data.
Preparation and characterization of tannin-based adhesives reinforced with cellulose nanofibrils for wood bonding
Authors: Zidanes Uasmim Lira , Dias Matheus Cordazzo , Lorenço Mário Sérgio , da Silva Araujo Elesandra , Ferreira e Silva Maryella Júnnia , Sousa Thaís Brito , Ferreira Saulo Rocha , Ugucioni Júlio César , Denzin Tonoli Gustavo Henrique , Bianchi Maria Lucia , Mori Fábio Akira 
Published: August 2020

AbstractAdhesives based on vegetable tannins are already a reality in the market. However, their use is still limited due to their low mechanical resistance and weak humidity resistance. Cellulose nanofibrils (CNFs) are being used as reinforcing materials in various composites, resulting in an improvement of mechanical proprieties in general. The objective of this work was to evaluate the incorporation of CNFs in adhesives made of tannins obtained from the Angico tree (Anadenanthera peregrine). Concentrations of nanofibrils at 1, 5, and 10% were added to the adhesives on a dry basis. Tests of viscosity, pH, solids content, and gel time were performed to determine the physical proprieties of the adhesives. The Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Raman spectra measurements were also determined to understand the interaction between tannins and CNFs. Thermogravimetric analyses (TGA) were carried out to determine the thermal resistance of the composite. The FTIR and Raman characterization identified some differences in the peaks in the chemical composition of the adhesives with different percentages of CNFs. The adhesives showed no different decomposition in the thermogravimetric analyses. The shear strength in the glue line of the adhesive with 5% of CNFs inToona ciliatawoods was determined. Among all the adhesives analyzed, the one with 5% of CNFs produced an improvement in the mechanical resistance and humidity resistance on the glue line.