bluuebunny/crossref_metadata_2025_split huggingface dataset:
Primary concept of nickel toxicity – an overview
Authors: Das Kusal K. , Reddy R. Chandramouli , Bagoji Ishwar B. , Das Swastika , Bagali Shrilaxmi , Mullur Lata , Khodnapur Jyoti P. , Biradar M.S. 
Published: March 2019

Abstract
Toxic metals, including excessive levels of essential metals tend to change biological structures and systems into either reversible or irreversible conformations, leading to the derangement of organ functions or ultimate death. Nickel, a known heavy metal is found at very low levels in the environment. Nickel is available in all soil types and meteorites and also erupts from volcanic emissions. In the environment, nickel is principally bound with oxygen or sulfur and forms oxides or sulfides in earth crust. The vast industrial use of nickel during its production, recycling and disposal has led to widespread environmental pollution. Nickel is discharged into the atmosphere either by nickel mining or by various industrial processes, such as power plants or incinerators, rubber and plastic industries, nickel-cadmium battery industries and electroplating industries. The extensive use of nickel in various industries or its occupational exposure is definitely a matter of serious impact on human health. Heavy metals like nickel can produce free radicals from diatomic molecule through the double step process and generate superoxide anion. Further, these superoxide anions come together with protons and facilitate dismutation to form hydrogen peroxide, which is the most important reason behind the nickel-induced pathophysiological changes in living systems. In this review, we address the acute, subchronic and chronic nickel toxicities in both human and experimental animals. We have also discussed nickel-induced genotoxicity, carcinogenicity, immunotoxicity and toxicity in various other metabolically active tissues. This review specifically highlighted nickel-induced oxidative stress and possible cell signaling mechanisms as well.
Twenty Years of European Central Bank Monetary Policy: A Keynesian and Austrian Perspective
Authors: van Riet Ad 
Published: March 2019

AbstractThis article reviews how the European Central Bank (ECB) implemented its monetary policy for the euro area from 1999 to 2018 from two perspectives. Taking a Keynesian point of view, the euro area economy was beset for a long time by secular stagnation and required the ECB to ensure a protracted period of relatively low interest rates to provide continuous support to aggregate demand at the level of the Economic and Monetary Union (EMU). By contrast, the Austrian School of Economics argues that the low-interest rate bias of the ECB caused financial excesses and prevented a more rapid reallocation of unviable resources necessary for a sustainable expansion of aggregate supply. Both the Keynesian and the Austrian paradigm appear relevant when examining the monetary and financial aspects of the euro area business cycle and the secular decline of interest rates over the past 20 years. For most of the time, ECB monetary policy was the ‘only game in town’ and the EMU architecture was unable to deliver the balanced macroeconomic and financial policy mix required for a sustainable path of the euro area economy.
Terminal Value in SMEs: Testing the Multiple EV/EBITDA Approach
Authors: Vidal-Garcia Raül , Ribal Javier 
Published: March 2019

AbstractThis study focuses on answering whether EV/EBITDA multiple of public companies in the food industry can be useful to obtain the Terminal Value (TV) in the valuation of unlisted small and medium-sized food companies. A case study into Spanish unlisted agribusinesses is designed for several samples and accounting years from 2010 to 2013. By means of a discounted cash flow (DCF) model combined with bootstrap techniques, the TV/EBITDA empirical distribution of the unlisted multiples is obtained for two different scenarios of free cash flow (FCF) growth, and then compared with the EV/EBITDA of the listed companies in the same industry. The results show that the stock market EV/EBITDA multiple may be used to determine the TV in the valuation process of unlisted small and medium-sized food companies that consistently obtain positive cash flows.
How many indicator species are required to assess the ecological status of a river?
Authors: Budka Anna 
Published: March 2019

Abstract
The presented research focused on macrophytes, which constitute a primary element in the assessment of the ecological status of surface waters following the guidelines of the Water Framework Directive. In Poland, such assessments are conducted using the Macrophyte Index for Rivers (MIR). The objective of this study was to characterize macrophyte species in rivers in terms of their information value in the assessment of the ecological status of rivers. The macrophyte survey was carried out at 100 river sites in the lowland area of Poland. Botanical data were used to verify the completeness of samples (the number of taxa). In the presented research, the information provided by each species was controlled. Entropy was used as the main part of information analysis. This analysis showed that the adoption of a standard approach in the studies of river macrophytes is likely to provide sample underestimation (with missing species). This may potentially lead to incorrect determination of MIR and thus result in a wrong environmental decision. On this basis, a sample completeness criterion was developed. Using this criterion, the average value of information for macrophyte species in medium-sized lowland rivers is suffcient to be considered representative.
New and interesting Luticola species (Bacillariophyta) from the mangroves of Nosy Be Island, NW Madagascar
Authors: Bąk Małgorzata , Kryk Adrian , Peszek Łukasz , Kociolek John P. , Bemiasa John , Bemanaja Etienne 
Published: March 2019

Abstract
Madagascar is an isolated island characterized by a high degree of endemism at all taxonomic levels. Diatom assemblages of the region are still poorly known and sporadic sampling events in various habitats (e.g. lagoons, mangroves) have revealed a large number of taxa that could not be identified. This study presents detailed descriptions of two new species of Luticola: L. nosybeana and L. madagascarensis, collected from mangrove roots on Nosy Be Island. Comparisons with the described congeners showed that the density of striae in Luticola nosybeana is higher than that in L. belawanensis and proximal raphe endings terminate as irregular, shallow grooves. Luticola madagascarensis differs from L. similis in the shape of proximal raphe endings, which are short and expanded in the latter, while continue with irregular, shallow, elongated L-shaped grooves in L. madagascarensis. Luticola nosybeana and L. madagascarensis can be distinguished under a light microscope by the shape of the central area (bow-tie shaped in L. madagascarensis and deltoid in L. nosybeana) and isolated pores (robust and well visible in L. madagascarensis, poorly discernible in L. nosybeana). The two new species are unique in their habitat preferences: while all known congeners are freshwater, the new species inhabit estuarine mangroves.
Epiphytic bacterial community composition on the surface of the submerged macrophyte Myriophyllum spicatum in a low-salinity sea area of Hangzhou Bay
Authors: Liu Qiao , Liu Mengmeng , Zhang Qi , Bao Yanlin , Yang Na , Huo Yuanzi , He Peimin 
Published: March 2019

Abstract
In this study, we conducted a comparative analysis of the abundance and diversity of bacteria on the surface of the submerged macrophyte Myriophyllum spicatum, as well as in the surrounding water column and sediment in the low-salinity area of Hangzhou Bay, China. Bacterial clones from three clone libraries were classified into 2089 operational taxonomic units (OTUs), most of which affiliated with bacterial divisions commonly found in marine ecosystems. Alphaproteobacteria, Cyanobacteria and Gammaproteobacteria were the most abundant groups of bacteria on the surface of plants, in the water column and sediment, respectively. Epiphytic bacterial communities were more closely related to those in the sediment than bacterioplankton, and some species of epiphytic bacteria were found only on the surface of M. spicatum. The relative abundance of epiphytic bacterial genera associated with breakdown of organic compounds and with cellulose digestion was higher in October than that in July. These results suggested that bacterial communities on the surface of M. spicatum may originate from sediment bacterial communities and their specific structure was gradually formed on the surface of M. spicatum after being cultivated in low-salinity seawater.
Parasites of round goby, Neogobius melanostomus, currently invading the Elbe River
Authors: Kvach Yuriy , Ondračková Markéta , Janáč Michal , Krasnovyd Vadym , Seifertová Mária , Jurajda Pavel 
Published: March 2019

Abstract
The round goby, Neogobius melanostomus, is a Ponto-Caspian fish species currently found in many parts of Europe, including the North Sea riverine deltas. The objective of this study was to examine the parasite community of fish caught in the lower Elbe (Süderelbe – tidal zone; Geesthacht – non-tidal) in Germany and compare it with published data from the upper Elbe (Ústí nad Labem) in the Czech Republic. Twelve parasite taxa were recorded in the lower Elbe, six in the Süderelbe and nine near the city of Geesthacht. Süderelbe fish were mainly infected with Angullicola crassus larvae, while gobies from Geesthacht – with glochidia and sporadically occurring Pomporhynchus laevis, and the opposite situation was observed at Ústí nad Labem. It appears that a large tidal weir at Geesthacht significantly contributes to the division of the round goby population, with the Geesthacht parasite community being more similar to that at Ústí nad Labem than the one from the Süderelbe, thus increasing the likelihood that shipping from Hamburg was the introduction vector to Ústí nad Labem. We also recorded Acanthocephalus rhinensis in the Elbe for the first time, and in a new host – the round goby. Thus, round gobies may represent a new vector for the introduction of this parasite along the Elbe.
Non-indigenous tanaid Sinelobus vanhaareni Bamber, 2014 in the Polish coastal waters – an example of a successful invader
Authors: Brzana Radosław , Marszewska Lena , Normant-Saremba Monika , Błażewicz Magdalena 
Published: March 2019

Abstract
The paper reports on the first record of Sinelobus vanhaareni, a non-native tanaid, in the Polish coastal waters (Gulf of Gdansk, southern Baltic Sea). The species was found in the port of Gdynia in 2014, while in 2015–2017 it already colonized the western part of the Gulf of Gdansk, inhabiting mainly hard substrates, including both natural (e.g. boulders) and anthropogenic ones (e.g. vertical concrete piles or walls of offshore structures and breakwaters, horizontal PVC plates and oyster shells used as filling in habitat collectors). During the survey period, S. vanhaareni was found in different seasons of the year (from winter and early spring to autumn), which, combined with the presence of ovigerous females as well as high abundance (up to tens of thousands of individuals per square meter), allows us to assume that the species has already established a population in the Gulf of Gdansk.
Infestation of Bivalvia by Dreissena polymorpha (Pallas, 1771) in thermally polluted lakes
Authors: Marszewska Anna , Kopczyńska Kamila , Cichy Anna , Żbikowska Elżbieta 
Published: March 2019

Abstract
Unionid mussel species belong to one of the most threatened invertebrate groups on Earth. Biological invasions, especially those by filtering species, are parti cularly harmful to nati ve Unionidae species. In Poland, a significantly disturbing situati on of native Unionidae is observed in thermally polluted aquatic ecosystems. Such water bodies have favorable conditions for the settlement of alien mollusks, including Sinanodonta woodiana or Corbicula fluminea, whose shells can potenti ally be a beneficial substrate for Dreissena polymorpha. The objecti ve of the presented research was to check whether zebra mussels can hinder the invasion of alien species of bivalve mollusks in thermally polluted waters. Our results indicate that with the increase in thermal polluti on associated with the growing invasion of alien species of bivalves, D. polymorpha infestations of clams decrease considerably, which leads to the conclusion that D. polymorpha does not pose a significantnatural threat to bivalves in the lakes under study.
Many faces of arsenic
Authors: Radke Barbara , Dembska Grażyna , Pazikowska-Sapota Grażyna , Galer-Tatarowicz Katarzyna 
Published: March 2019

Abstract
Arsenic (As) is a natural component of the Earth’s crust. Due to its specific properties, arsenic became e.g. the favorite poison in the 19th century in Europe, a component of an effective insecticide and herbicide in agriculture, a specific chemical weapon during World War II and a medication used to treat various diseases. The bad reputation of this element was confirmed after World War II, when arsenic-based chemical weapons were dumped on the seabed and became a potential threat to the marine ecosystem. The wide distribution of arsenic compounds in the environment necessitated the development of technologies aimed at removing arsenic from the aquatic ecosystem. This study provides a detailed overview of the occurrence, distribution and transformation of arsenic species in the aquatic environment.
Building Companionship Between Community and Personal Archiving: Strengthening Personal Digital Archiving Support in Community-Based Mobile Digitization Projects
Authors: Han Ruohua 
Published: March 2019

AbstractThe interconnectedness between personal digital archiving (PDA) and community-based digital archiving provides an entry point for thinking about how to better bridge the two within single projects. Flexibility and sustainability are dimensions that warrant special consideration to support PDA within community-based digital archiving projects. This paper examines the flexibility and sustainability of two community-based mobile digitization projects (Culture in Transit and Georgia HomePLACE DigiKits) in supporting PDA. The assessment shows that the projects are in a good position to support PDA, with only some concerns about ensuring sustainable access to digitization equipment and sufficient guidance in long-term preservation. Drawing from this work, I propose three ways community-based mobile digitization projects can be redesigned to further strengthen their support for PDA without undermining their community-based objectives. The goal of this paper is to demonstrate the value in considering connections and differences between community and personal archiving needs in current and future projects, and calls for further coordination of efforts and collaboration to build better collaboration between community and personal archiving.
Recovering the US Hispanic Literary Heritage: A Case Study on US Latina/o Archives and Digital Humanities
Authors: Baeza Ventura Gabriela , Gauthereau Lorena , Villarroel Carolina 
Published: March 2019

AbstractThis article focuses on the work and efforts put forth by the University of Houston’s Recovering the US Hispanic Literary Heritage program (Recovery) to create the first digital humanities center for US Latina/o Research: #usLdh. Recovery is a program to locate, preserve, and make available the written legacy of Latinas/os in the United States since colonial times until 1960. Through 27 years of successful work Recovery has not only been able to inscribe the excluded history of Latinas/os, but also has created an inclusive and vast digital repository that facilitates scholarship in this area of studies. This article focuses on the importance of recovery work in the writing, teaching, and understanding of history and considers how local personal archives have helped to fill in the gaps of mainstream history. We will detail the goals and challenges of this mission, as well as the importance of educating the community in digital methods that preserve and disseminate minority voices.
Identifying Individual and Institutional Motivations in Personal Digital Archiving
Authors: Condron Melody 
Published: March 2019

AbstractPersonal digital archiving (PDA) is a relatively new field. As it has developed, two distinct personas have emerged: the individual person, seeking to capture and archive their own or someone else’s personal digital materials; and the institution—including museums, libraries, and archives—attempting to acquire and manage personal digital materials. In doing so, institutions also advocate for the preservation and management of personal digital archives and digital file management practices held in private hands. However, individuals and institutions make different choices in terms of curation and management, based on skills, knowledge, purpose, function and economics. Understanding these differences can aid institutional support for personal archives, as well as help to build collaborative frameworks to help personal and institutional differences be better understood. This paper identifies the similarities and differences in motivation and approach between individual and institutional practices and perspectives in PDA.
Personal and Community Connection: Introduction to the Special Issue on Personal Digital Archiving 2018
Authors: Condron Melody 
Published: March 2019

AbstractOn April 23–25, 2018, the University of Houston hosted the annual Personal Digital Archiving (PDA) Conference in Houston, Texas. The conference is a focused, single-track event that brings together information professionals, students, and non-academics. Though small, the conference commonly attracts attendees from around the world to discuss topics focused on the intersection of personal archiving and technology. The three-day event was comprised of two full days of presentations to all attendees. Over 140 attendees from five countries were in attendance. Two keynotes, nineteen sessions with question and answer panels, seven posters, and six lightning talks were presented. A third day offered two hands-on workshops and a tour of the Houston Metropolitan Research Center. In this introduction, the Chair of the Conference Planning Committee and Guest Editor of this issue, Melody Condron, discusses highlights of the conference, as well as themes and discussion that tie into the papers presented in this issue.
High-throughput assessment of hypothetical zeolite materials for their synthesizeability and industrial deployability
Authors: Salcedo Perez Jose Luis , Haranczyk Maciej , Zimmermann Nils Edvin Richard 
Published: March 2019

Abstract
Zeolites are important microporous framework materials, where 200+ structures are known to exist and many millions so-called hypothetical materials can be computationally created. Here, we screen the “Deem” database of hypothetical zeolite structures to find experimentally feasible and industrially relevant materials. We use established and existing criteria and structure descriptors (lattice energy, local interatomic distances, TTT angles), and we develop new criteria which are based on 5-th neighbor distances to T-atoms, tetrahedral order parameters (or, tetrahedrality), and porosity and channel dimensionality. Our filter funnel for screening the most attractive zeolite materials that we construct consists of nine different types of criteria and a total of 53 subcriteria. The funnel reduces the pool of candidate materials from initially >300,000 to 70 and 33, respectively, depending on the channel dimensionality constraint applied (2- and 3-dimensional vs. only 3-dimensional channels). We find that it is critically important to define longer range and more stringent criteria such as the new 5-th neighbor distances to T-atoms and the tetrahedrality descriptor in order to succeed in reducing the huge pool of candidates to a manageable number. Apart from four experimentally achieved structures (BEC, BOG, ISV, SSF), all other candidates are hypothetical frameworks, thus, representing most valuable targets for synthesis and application. Detailed analysis of the screening data allowed us to also propose an exciting future direction how such screening studies as ours could be improved and how framework generating algorithms could be competitively optimized.
MSEPBurr Distribution: Properties and Parameter Estimation
Authors: Choir Achmad Syahrul , Iriawan Nur , Ulama Brodjol Sutijo Suprih , Dokhi Mohammad 
Published: March 2019

MSNBurr and MSTBurr distribution have been developed as Neo-Normal distributions that represent a relaxation of normality. The difference between them is that the MSTBurr’s peak is below MSNBurr’s. In this paper, we propose a MSEPBurr distribution with its peak could be not only lower but also high-er than MSNBurr. Furthermore, we study several properties of MSEPBurr, such as mean, variance, skewness, kurtosis, and quantile. The MSEPBurr parameters are estimated by using the Bayesian approach with the BUGS language implementation for its computation. We employ simulation study and use existing data to illustrate the application of the regression model. In real data, we notice that MSEPBurr has similar performance with MSNBurr and MSTBurr that they outperform Normal and Student-t distribution in Australian athlete data because their skewness can accommodate long left tail excellently. However, their performance is less than the Student-t model in chemical reaction rate data because their skewness can not accommodate long right tail perfectly. Although in general their perfor-mance is the same, we observe that the MSEPBurr performs better than the MSNBurr and the MSTBurr in some simulated data.
An Improved Exponential Type Estimator Of Population Mean of Sensitive Variable Using Optional Randomized Response Technique
Authors: Grover Lovleen Kumar , Kaur Amanpreet 
Published: March 2019

In this paper, we improve the efficiency of Koyuncu et al (2014)’s estimator of population mean of sensitive variable by replacing Traditional Randomized response technique with Optional Randomized response technique as suggested by Gupta et al (2014). The mean square error of proposed estimator is obtained, up to first order of approximation, and is compared with mean square error of various existing estimators theoretically as well as numerically.