bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Musim dan Pasang Surut Terhadap Konsentrasi Mikroplastik di Perairan Delta Sungai Wulan, Kabupaten Demak
Authors: Wulandari Sri Yulina , Radjasa Ocky Karna , Yulianto Bambang , Munandar Bayu 
Published: May 2022

Sungai merupakan jalur penting masuknya mikroplastik ke perairan laut. Mikroplastik baik primer atau sekunder merupakan polutan partikel plastik yang berukuran kurang dari 5 mm (ukuran partikel mirip dengan partikel suspensi atau plankton). Termasuk sampah plastik, mikroplastik berpotensi menyebabkan terganggunya rantai makanan pada biota laut. Penelitian ini bertujuan untuk mengetahui konsentrasi mikroplastik di kolom air pada musim hujan dan kemarau saat kondisi pasang dan surut di perairan Delta Wulan, Kecamatan Wedung Kabupaten Demak. Metode yang digunakan adalah deskriptif kuantitatif. Total sebanyak 32 sampel air laut diambil dengan menggunakan plankton net dari 8 stasiun pengamatan yang ditentukan secara purposive. Pengambilan sampel dilakukan dengan mempertimbangkan kondisi musim dan pasang surut. Analisa kandungan mikroplastik dalam sampel air laut dilakukan dengan menggunakan metode yang direkomendasikan oleh NOAA. Prosedur analisa meliputi penyaringan sampel air, penambahan reagen (Fe (II) 0,05M, H2O2 30%, NaCl), pemanasan, pemisahan berdasarkan densitas dan analisa gravimeri, Hasil penelitian menunjukkan bahwa nilai konsentrasi mikroplastik lebih tinggi pada musim kemarau dibanding musim hujan, dengan nilai rerata berturut-turut sebesar 2,608 mg/L dan 2,247 mg/L. Dari analisa regresi ANOVA menunjukkan ada perbedaan konsentrasi berdasarkan musim (p-value sebesar 0,007), namun tidak ada perbedaan berdasarkan kondisi pasang dan surut (p-value sebesar 0,840). Rivers are an important pathway for the entry of microplastics into marine waters. Microplastics, both primary and secondary, are pollutants of plastic particles that are less than 5 mm in size (particle size is similar to sediment suspense or plankton). Including plastic waste, microplastics have the potential to disrupt the food chain in marine biota. This study aims to determine the concentration of microplastics in the water column during the rainy and dry seasons during high and low tide conditions in the waters of the Wulan Delta, Wedung District, Demak Regency. The method used is descriptive quantitative. A total of 32 seawater samples were taken using a plankton net from 8 observation stations which were determined purposively. Sampling was carried out by considering seasonal and tidal conditions. Analysis of microplastic content in seawater samples was carried out using the procedure recommended by NOAA. The analytical procedure includes filtering of water samples, addition of reagent (Fe (II) 0.05M, 30% H2O2, NaCl), heating, density separation and gravimetric analysis. The results showed that the concentration of microplastics was higher in the dry season than in the rainy season, with an average value of 2,608 mg/L and 2,247 mg/L, respectively. From the ANOVA regression analysis showed that there was a difference in concentration based on seasons (p-value of 0.007), but there was no difference based on tidal and tidal conditions (p-value of 0.840).
400 Jahre Bibliothek der Hansestadt Lübeck – Ausblick auf die Zukunft mit der Herausforderung eines historischen Erbes
Authors: Schleiwies Gerald 
Published: May 2022

Zusammenfassung
Ein runder Geburtstag ist ein gern genommener Anlass zum Feiern. Doch je höher die Zahl, desto mehr Geschichte schwingt mit. In Lübeck kommt dazu, dass die Gründungsräume bis heute genutzt werden. Und es bleibt nicht bei den Räumlichkeiten, auch die Art und Weise der Aufgabenstellung ist durch die Historie bedingt recht einzigartig. In diesem Fall feiert eine Öffentliche Bibliothek, eine wissenschaftliche Bibliothek, eine historische Bibliothek und eine ehemalige Staatsbibliothek einer ehemals Freien Reichs- und Hansestadt.
Approximating the group algebra of the lamplighter by infinite matrix products
Authors: Ara Pere , Claramunt Joan 
Published: May 2022

AbstractIn this paper, we introduce a new technique in the study of the*{*}-regular closure of some specific group algebrasKGinside𝒰⁢(G){{\mathcal{U}}(G)}, the*{*}-algebra of unbounded operators affiliated to the group von Neumann algebra𝒩⁢(G){{\mathcal{N}}(G)}. The main tool we use for this study is a general approximation result for a class of crossed product algebras of the formCK⁢(X)⋊Tℤ{C_{K}(X)\rtimes_{T}{\mathbb{Z}}}, whereXis a totally disconnected compact metrizable space,Tis a homeomorphism ofX, andCK⁢(X){C_{K}(X)}stands for the algebra of locally constant functions onXwith values on an arbitrary fieldK. The connection between this class of algebras and a suitable class of group algebras is provided by the Fourier transform. Utilizing this machinery, we study an explicit approximation for the lamplighter group algebra. This is used in another paper by the authors to obtain a whole family ofℓ2{\ell^{2}}-Betti numbers arising from the lamplighter group, most of them transcendental.
The role of working memory in the effects of models as a written corrective strategy
Authors: Kang Eun Young 
Published: May 2022

Abstract
Several studies have evaluated the use of sample texts as models, against which second language (L2) learners can compare their original writing, as a written corrective feedback (WCF) strategy. This study contributes to this literature by investigating whether L2 learners’ working memory capacity, which is posited to play a crucial role in L2 learning, moderates the effects of models in WCF. Sixty-seven L2 college students were assigned to either a model group or a control group. Students in both groups individually engaged in a three-stage writing task (i.e., writing-comparing-rewriting), but only students in the model group received model essays during the comparison stage. Two weeks later, all participants were asked to repeat the same writing task, to investigate the long-term effects of models as well as to perform two working memory tasks: a complex working memory task (a reading span test) and a phonological short-term memory task (a non-word repetition test). Results showed that the model group learners made significant improvements in their writing, and maintained those positive effects after two weeks. In addition, complex working memory and phonological short-term memory were found to be significant predictors of the extent to which L2 learners benefitted from the use of models.
Reconstruction of local volatility surface from American options
Authors: Gong Wenxiu , Xu Zuoliang 
Published: May 2022

Abstract
In this paper, we discuss the reconstruction of a local volatility surface from American option prices. First of all, the American option prices are calculated by an accurate and fast finite difference scheme. Then the local volatility is obtained by minimizing the distance between theoretical prices and market option prices, which yields an optimization problem. The Bicubic spline regularization technique is used to overcome
the ill-posedness of the reconstruction problem. We solve the nonlinear optimization problem by using a gradient-based optimization algorithm.
Finally, we test our model with numerical examples and real market American put option data. The results show the good performance of our method.
Combined diagnostic value of insulin-like growth factor-1, insulin-like growth factor binding protein-3, and baseline luteinizing hormone levels for central precocious puberty in girls
Authors: Ouyang Lixue , Yang Fan 
Published: May 2022

Abstract

Objectives
The golden standard test for diagnosing central precocious puberty (CPP) is the gonadotropin releasing hormone stimulation test, which has many limitations. This study aimed to investigate the value of insulin-like growth factor-1 (IGF-1), IGF binding protein-3 (IGFBP-3), and basal luteinizing hormone (LH) levels in diagnosing CPP.

Methods
Cross-sectional study of the levels of IGF-1, IGFBP-3, and basal LH in girls with a chief complaint of premature breast development. Seventy-nine girls with CPP and 37 girls with premature thelarche (PT) diagnosed at West China Second University Hospital from January 2016 to October 2018 were recruited. All patients underwent physical examination, laboratory tests, uterine and ovarian ultrasound, and bone age tests, only CPP patients underwent pituitary magnetic resonance imaging (MRI). Statistical analysis was performed using the SPSS software 21.0. A receiver operating characteristic curve was used to determine diagnostic value.

Results
The anthropometric data and hormone indicators between CPP and PT were statistically different (p<0.001), except for peak follicle stimulating hormone (FSH) levels (p=0.181). IGF-1, IGFBP-3, and basal LH levels were significantly higher in the subjects with CPP than in those with PT; IGF-1 and basal LH were positively correlated with peak LH and LH/FSH (peak) (p<0.001). The area under the curve (AUC) of IGF-1, IGFBP-3, and basal LH were 0.880, 0.853, and 0.915, respectively. When combined, the AUC reached the highest value of 0.978.

Conclusions
IGF-1, IGFBP-3, and baseline LH levels were useful in diagnosing CPP. The combined analysis improved the diagnostic effectiveness.
Why maternal mortality in the world remains tragedy in low-income countries and shame for high-income ones: will sustainable development goals (SDG) help?
Authors: Kurjak Asim , Stanojević Milan , Dudenhausen Joachim 
Published: May 2022

Abstract
Maternal death is defined as the death of a woman while pregnant or within 42 days of termination of pregnancy, irrespective of the duration and the site of the pregnancy, from any cause related to or aggravated by the pregnancy or its management. Maternal mortality (MM) and morbidity are a public health issue, with scarce knowledge on their levels and causes in low-income (LIC) countries. The data on MM and morbidity should rely on population-based studies which are non-existent. Therefore, maternal mortality ratio (MMR) estimates are based mostly on the mathematical models. MMR declined from 430 per 100,000 live births (LB) in 1990 to 211 in 2017. Absolute numbers of maternal deaths were 585,000 in 1990, 514,500 in 1995 and less than 300,000 nowadays. Regardless of reduction, MM remains neglected tragedy especially in LIC. Millennium Development Goals (MDGs) declared reduction MMR by three quarters between 2000 and 2015, which failed. Target of Sustainable Development Goals (SDGs) was to decrease MMR to 70 per 100,000 LB. Based on the data from the country report on SDGs in 10 countries with the highest absolute number of maternal deaths it can be concluded that the progress has not been made in reaching the targeted MMR. To reduce MMR, inequalities in access to and quality of reproductive, maternal, and newborn health care services should be addressed, together with strengthening health systems to respond to the needs and priorities of women and girls, ensuring accountability to improve quality of care and equity.
Encoding in Conceivability-Contexts: Zalta’s Theory of Intentionality versus Bourgeois-Gironde’s Notion of Quasi-encoding
Authors: Luporini Valentina 
Published: May 2022

Abstract
In (Bourgeois-Gironde, S. 2004. “On Zalta’s Notion of Encoding in Conceivability-Contexts.” Metaphysica 5), the author proposes a survey of Zalta’s Object Theory (Zalta, E. N. 1983. Abstract Objects: An Introduction to Axiomatic Metaphysics. Dordrecht: Reidel Publishing Company; Zalta, E. N. 1988. Intensional Logic and the Metaphysics of Intentionality. Cambridge: MIT Press) and, more specifically, of the Modal Axiom of Encoding (MAE). MAE claims that if something x possibly encodes a property F, then x necessarily encodes F. According to Bourgeois-Gironde, MAE fails to account for intentional phenomena which occur in conceivability-contexts. His solution is based on the notion of quasi-encoding: x quasi-encodes F iff x possibly encodes F. In this paper, I show that Bourgeois-Gironde’s concern is misguided and that Zalta’s framework captures the conceivability-phenomena at issue by modeling Husserl’s notion of Noemata. I then argue that his solution is superior to Bourgeois-Gironde’s. The philosophical significance of such a discussion nonetheless goes well beyond the debate between these two authors. Indeed, Zalta’s theory of Noemata is only sketched and needs to be further explored to see, on the one hand, whether and how Object Theory successfully describes the behavior of objects in conceivability-contexts, and, on the other hand, to test the efficacy of its primitive notions that are – as the contemporary debate on Neomeinongianism largely shows – anything but uncontroversial.
Franz Rosenzweig’s Concept of Redemption as a Vehicle for Confronting the Philosophical Problem of Contemporary Transhumanism
Authors: Turner Joseph (Yossi) , Shifman Berman Nadav 
Published: May 2022

Abstract
This article presents Franz Rosenzweig’s concept of redemption as a vehicle for raising some important questions for confronting the contemporary movement of Transhumanism. The upshot of our discussion is located in the existential questions asked, following a philosophical comparison of Rosenzweig’s religious and philosophical commitment to human life in its most robust form, with Transhumanism’s scientistic vision. To do so, the article first discusses some techno-scientistic assumptions of Transhumanism, showing that it presumes what was once a core principle of German Idealism, the identity of reason and being, against which Rosenzweig rebelled. Then, the article turns to examine Rosenzweig’s humanistic redemptive vision and its emphasis on the corporeal, the temporal, and the worldly (rather than the purely spiritual, the apocalyptic, and the other-worldly). The conclusion makes explicit the ways in which Rosenzweig’s redemptive vision provides a contrasting model to the one set forth by Transhumanism.
All-optical tunable wavelength conversion in opaque nonlinear nanostructures
Authors: Gao Jiannan , Vincenti Maria Antonietta , Frantz Jesse , Clabeau Anthony , Qiao Xingdu , Feng Liang , Scalora Michael , Litchinitser Natalia M. 
Published: May 2022

Abstract
We demonstrate a simple, femtosecond-scale wavelength tunable, subwavelength-thick nanostructure that performs efficient wavelength conversion from the infrared to the ultraviolet. The output wavelength can be tuned by varying the input power of the infrared pump beam and/or relative delay of the control beam with respect to the pump beam, and does not require any external realignment of the system. The nanostructure is made of chalcogenide glass that possesses strong Kerr nonlinearity and high linear refractive index, leading to strong field enhancement at Mie resonances. Although, as many other materials, chalcogenide glasses absorb in the ultraviolet range, fundamental phase-locking mechanism between the pump and the inhomogeneous portion of the third-harmonic signal enables ultraviolet transmission with little or no absorption.
Crystal structure of (Z)-3-((tert-butylamino) methylene)-2-(2-hydroxynaphthalen-1-yl) chroman-4-one, C24H23NO3
Authors: Liu Tianhao , Lv Menglan 
Published: May 2022

Abstract
C24H23NO3, orthorhombic, Pna21, a = 8.2490(11) Å, b = 15.886(2) Å, c = 16.218(2) Å, β = 99.465(2)°, Z = 4, V = 2096.4(5) Å3, R

gt
(F) = 0.0545, wR

ref
(F
2) = 0.1688, T = 273 K.
Synthesis and crystal structure of (E)-1-(4-(((E)-3-(tert-butyl)-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-ethyl oxime, C21H26N2O2
Authors: Zhao Ji-Xing , Chen Da-Qun , Wu Lei-Fang 
Published: May 2022

Abstract
C21H26N2O2, monoclinic, P21 (no. 4), a = 7.1425(7) Å, b = 9.2733(8) Å, c = 14.3161(13) Å, β = 93.592(4)°, V = 946.36(15) Å3, Z = 2, Rgt
(F) = 0.0461, wRref
(F
2) = 0.1148, T = 173(2) K.
The crystal structure of bis(4-(6-carboxy-8-ethyl-3-fluoro-5-oxo-5,8-dihydro-1,8-naphthyridin-2- yl)piperazin-1-ium) adipate tetrahydrate, C36H52F2N8O14
Authors: Jiang Cheng-Jun , Xia Ying-Fan 
Published: May 2022

Abstract
C36H52F2N8O14, triclinic, P

1
‾

$\overline{1}$

(no. 2), a = 6.9775(4) Å, b = 9.0785(6) Å, c = 16.8942(10) Å, β = 92.778(2)°, V = 990.91(11) Å3, Z = 1, R

gt
(F) = 0.0397, wR

ref
(F
2) = 0.1088, T = 170 K.
Review and validation of photovoltaic solar simulation tools/software based on case study
Authors: Milosavljević Dragana D. , Kevkić Tijana S. , Jovanović Slavica J. 
Published: May 2022

Abstract
Photovoltaic (PV) systems are an excellent solution to meet energy demand and protect the global environment in many cases. With the increasing utilization of the PV system worldwide, there is an increasing need for simulation tools to predict the PV system’s performance and profitability. This research includes testing and comparison of PV tools: photovoltaic geographical information system (PVGIS), PVWatts, SolarGIS, RETScreen, BlueSol, PVsyst, HelioScope, PV*SOL, Solarius PV, Solar Pro, PV F-Chart, PolySun, solar advisor model (SAM), and hybrid optimization model for electric renewables (HOMER), based on experimental data obtained from fixed on-grid 2 kWp PV system in 2019. The PV system is part of a research project related to the examination of the PV system operation in real climatic conditions in Niš. This research investigates the most appropriate PV software for PV systems design by testing the most commonly used PV tools. It was accomplished by comparing experimental data obtained by a 2 kWp PV system in Niš and estimated data obtained from different PV tools. The study shows that annually, the experimentally measured average daily solar irradiation on the inclined plane was 5,270 Wh/m2/day, and the lowest deviation of the simulation results compared to experimental measurements was obtained by SolarPro. Total annual electricity production from the given system was 2455.621 kW h, and the lowest deviation of the simulation results compared to experimental measurements was obtained by PVGIS. By analyzing and publishing the actual solar irradiation and PV power output data, this study could help researchers to increase the PV systems modeling accuracy.
Investigation of optical and biocompatible properties of polyethylene glycol-aspirin loaded commercial pure titanium for cardiovascular device applications
Authors: Mohanta Monalisha , Thirugnanam A. 
Published: May 2022

Abstract
This research investigates the optical and biocompatible properties of alkali-treated cpTi immersed in aspirin and different molecular weights of polyethylene (PEG). Instrumental characterizations were performed using scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet–visible spectroscopy. Additionally, drug release, antithrombotic, and cell adhesion studies were conducted in in-vitro conditions. The SEM micrographs showed that heat treatment of NaOH modified cpTi substrates increased the average surface pore size by 217%. Raman spectra’s active modes confirmed the presence of titanate groups which intensified the semiconductive nature of alkali-treated cpTi substrates. Further, the semiconductive nature was confirmed through the shift of the energy bandgap from 2.69 to 2.9 eV. The continuous redshift of the absorbance edge with an increase in the molecular weight of PEG indicates improved optical property. Following the Rigter–Peppas dynamic model, the drug release kinetics showed a non-Fickian dispersion (n < 1) and super case II transport (n = 2.21) for PEG-coated cpTi substrates. The alkali-treated cpTi-aspirin-PEG surface exhibits suitable antithrombotic property and interstitial cell adhesion with PEG coating. The modified surface on cpTi demonstrated a promising technique to improve the optical, antithrombotic, and biocompatibility performances, which are the prime requirement for the blood-interacted cardiovascular devices such as stents.
Iron Gall Ink Corrosion on Parchment. Preliminary Evaluation of Treatment Methods Using Aqueous Solutions
Authors: Behrens Lisa , Henniges Ute , Forstmeyer Kerstin , Brückle Irene 
Published: May 2022

Abstract
Ink corrosion on parchment is a phenomenon that, unlike its counterpart on paper, has so far been little researched. The same applies to the options for conservation treatment. In order to provide a guide for conservation practice as well as further research, five water-based treatment methods were examined: calcium phytate with pH 5.3 or 3.0, a 0.5% (w/w) solution type B gelatine, a 1% (w/w) solution of phytic acid at pH 2.2 and calcium phytate in combination with gelatine. These were tested on 70 specimens cut from on piece of buffed vellum and 36 specimens from an early modern deed on parchment that showed signs of ink degradation. After treatment and accelerated ageing, the samples were examined with colorimetry and ATR-FTIR spectroscopy and tested with bathophenanthroline for free iron ions. None of the tested treatment methods achieved a fully reliable inhibition of ink corrosion, but apart from a moisture-catalysed acceleration of degradation reactions, no adverse effects were observed either. Results from ATR-FTIR suggest that oxidation plays a more important role in damage related to ink corrosion of parchment than hydrolysis.
Existence of solutions for fractional impulsive neutral functional differential equations driven by fractional Brownian motion
Authors: Lahmoudi Ahmed , Lakhel El Hassan 
Published: May 2022

Abstract
In this paper, we consider a class of fractional impulsive neutral stochastic functional
differential equations with infinite delay driven by a fractional Brownian motion in a real separable Hilbert space.
We prove the existence of mild solutions by using stochastic analysis and a fixed-point strategy.
The Politics of Income Inequality: Redistribution, Turnout and Responsiveness
Authors: Polacko Matthew 
Published: May 2022

Abstract
Income inequality is viewed as one of the greatest challenges facing democracies today. Democracy is predicated on the ideal of equality, but political inequality occurs when the preferences of some are systematically afforded more weight in the political process than others. This research paper investigates the causal chain that allows for political inequality to arise through preference formation, articulation, and aggregation, by outlining the effects that income inequality can have on preferences for redistribution, political participation, and policy responsiveness. It finds that the policy choices presented to the electorate substantially matter for democracy, especially so in this age of increasing income inequality. There appears to be a lack of policy choice provided by political parties resulting in unequal policy responsiveness to the preferences of lower-income earners.
Metaphor(s) of the platform economy in the trade union discourse
Authors: Manzella Pietro 
Published: May 2022

Abstract
Previous research has shown that trade unions have resorted to a number of rhetorical tools to make their arguments and ensure the voice of their members was heard. In a time in which union membership is declining and many have questioned trade unions’ representation role, the recourse to figurative language – e.g. metaphors – might contribute to getting unions’ messages through, restoring trust among affiliates. Against this backdrop, this paper examines the metaphorical devices employed in trade union discourse, with a view to appreciating the way they are utilised in employee relations and highlighting the values unions intend to promote through these figures of speech. To this end, discourse analysis is carried out on a data corpus consisting of documents issued by the Trades Union Congress (TUC) in a given timeframe, in which metaphorical language is employed. The analysis focuses on a specific topic, i.e. platform workers and the protection of their rights. The findings reveal that metaphors are used by trade unions to convey different meanings, which are intended to generate narratives aimed at safeguarding the rights of platform workers.