bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Silk Fibroin on Cell Viability in Electrospun Scaffolds of Polyethylene Oxide
Authors: Carrasco-Torres Gabriela , Valdés-Madrigal Manuel A. , Vásquez-Garzón Verónica R. , Baltiérrez-Hoyos Rafael , De la Cruz-Burelo Eduard , Román-Doval Ramón , Valencia-Lazcano Anaí A.
Published: March 2019

In this study, a coating from electrospun silk fibroin was performed with the aim to modify the surface of breast implants. We evaluated the effect of fibroin on polymeric matrices of poly (ethylene oxide) (PEO) to enhance cell viability, adhesion, and proliferation of HaCaT human keratinocytes to enhance the healing process on breast prosthesis implantation. We electrospun six blends of fibroin and PEO at different concentrations. These scaffolds were characterized by scanning electron microscopy, contact angle measurements, ATR-FTIR spectroscopy, and X-ray diffraction. We obtained diverse network conformations at different combinations to examine the regulation of cell adhesion and proliferation by modifying the microstructure of the matrix to be applied as a potential scaffold for coating breast implants. The key contribution of this work is the solution it provides to enhance the healing process on prosthesis implantation considering that the use of these PEO–fibroin scaffolds reduced (p < 0.05) the amount of pyknotic nuclei. Therefore, viability of HaCaT human keratinocytes on PEO–fibroin matrices was significantly improved (p < 0.001). These findings provide a rational strategy to coat breast implants improving biocompatibility.
Carbon Nanofibers in Pure Form and in Calcium Alginate Composites Films: New Cost-Effective Antibacterial Biomaterials against the Life-Threatening Multidrug-Resistant Staphylococcus epidermidis
Authors: Salesa Beatriz , Martí Miguel , Frígols Belén , Serrano-Aroca Ángel
Published: March 2019

Due to the current global health problem of antibiotic resistant recently announced by the World Health Organization, there is an urgent necessity of looking for new alternative antibacterial materials able to treat and impede multidrug-resistant infections which are cost-effective and non-toxic for human beings. In this regard, carbon nanofibers (CNFs) possess currently much lower cost than other carbon nanomaterials, such as graphene oxide, and exhibit excellent chemical, mechanical and electric properties. Furthermore, here, the first report on the antibacterial activity of CNFs was demonstrated. Thus, these nanomaterials, in pure form or incorporated in a minuscule amount into calcium alginate composite films to reduce production costs as much as possible, showed to be new weapons against a globally spreading multidrug-resistant pathogen, the methicillin-resistant Staphylococcus epidermidis (MRSE). This Gram-positive bacterium is becoming one of the most dangerous pathogens, due to its abundance on skin. In this study, these hollow filamentous materials, in direct contact with cells and loaded in the low-cost calcium alginate composite films, showed no cytotoxicity for human keratinocyte HaCaT cells, which render them very promising for biomedical applications. The CNFs used in this work were characterized by Raman spectroscopy and observed by high-resolution transmission electron with energy-disperse X-ray spectroscopy.
Alginate/Gelatin Hydrogels Reinforced with TiO2 and β-TCP Fabricated by Microextrusion-based Printing for Tissue Regeneration
Authors: Urruela-Barrios Rodrigo , Ramírez-Cedillo Erick , Díaz de León A. , Alvarez Alejandro J. , Ortega-Lara Wendy
Published: March 2019

Three-dimensional (3D) printing technologies have become an attractive manufacturing process to fabricate scaffolds in tissue engineering. Recent research has focused on the fabrication of alginate complex shaped structures that closely mimic biological organs or tissues. Alginates can be effectively manufactured into porous three-dimensional networks for tissue engineering applications. However, the structure, mechanical properties, and shape fidelity of 3D-printed alginate hydrogels used for preparing tissue-engineered scaffolds is difficult to control. In this work, the use of alginate/gelatin hydrogels reinforced with TiO2 and β-tricalcium phosphate was studied to tailor the mechanical properties of 3D-printed hydrogels. The hydrogels reinforced with TiO2 and β-TCP showed enhanced mechanical properties up to 20 MPa of elastic modulus. Furthermore, the pores of the crosslinked printed structures were measured with an average pore size of 200 μm. Additionally, it was found that as more layers of the design were printed, there was an increase of the line width of the bottom layers due to its viscous deformation. Shrinkage of the design when the hydrogel is crosslinked and freeze dried was also measured and found to be up to 27% from the printed design. Overall, the proposed approach enabled fabrication of 3D-printed alginate scaffolds with adequate physical properties for tissue engineering applications.
Polymer/Fullerene Blend Solar Cells with Cadmium Sulfide Thin Film as an Alternative Hole-Blocking Layer
Authors: Thanihaichelvan Murugathas , Loheeswaran Selvadurai , Balashangar Kailasapathy , Velauthapillai Dhayalan , Ravirajan Punniamoorthy
Published: March 2019

In this work, chemical bath-deposited cadmium sulfide (CdS) thin films were employed as an alternative hole-blocking layer for inverted poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells. CdS films were deposited by chemical bath deposition and their thicknesses were successfully controlled by tailoring the deposition time. The influence of the CdS layer thickness on the performance of P3HT:PCBM solar cells was systematically studied. The short circuit current densities and power conversion efficiencies of P3HT:PCBM solar cells strongly increased until the thickness of the CdS layer was increased to ~70 nm. This was attributed to the suppression of the interfacial charge recombination by the CdS layer, which is consistent with the lower dark current found with the increased CdS layer thickness. A further increase of the CdS layer thickness resulted in a lower short circuit current density due to strong absorption of the CdS layer as evidenced by UV-Vis optical studies. Both the fill factor and open circuit voltage of the solar cells with a CdS layer thickness less than ~50 nm were comparatively lower, and this could be attributed to the effect of pin holes in the CdS film, which reduces the series resistance and increases the charge recombination. Under AM 1.5 illumination (100 mW/cm2) conditions, the optimized PCBM:P3HT solar cells with a chemical bath deposited a CdS layer of thickness 70 nm and showed 50% power conversion efficiency enhancement, in comparison with similar solar cells with optimized dense TiO2 of 50 nm thickness prepared by spray pyrolysis.
Parameter Screening of PVDF/PVP Multi-Channel Capillary Membranes
Authors: Back Jan O. , Brandstätter Rupert , Spruck Martin , Koch Marc , Penner Simon , Rupprich Marco
Published: March 2019

The increasing research in the field of polymeric multi-channel membranes has shown that their mechanical stability is beneficial for a wide range of applications. The more complex interplay of formation process parameters compared to a single-channel geometry makes an investigation using Design of Experiments (DoE) appealing. In this study, seven-channel capillary membranes were fabricated in a steam–dry–wet spinning process, while varying the composition of the polymer solution and the process temperatures in a three-level fractional factorial linear screening design. The polymers polyvinylidene flouride (PVDF) was the chemically resistant main polymer and polyvinylpyrrolidone (PVP) was added as hydrophilic co-polymer. Scanning electron microscopy and atomic force microscopy were applied to study the membrane morphology. Fabrication process conditions were established to yield PVDF/PVP multi-channel membranes, which reached from high flux (permeability P = 321.4 L / m 2 / h /bar, dextran 500 kDa retention R = 18.3%) to high retention (P = 66.8 L / m 2 / h /bar, R = 80.0%). The concentration of the main polymer PVDF and the molecular weight of the co-polymer PVP showed linear relations with both P and R. The permeability could be increased using sodium hypochlorite post-treatment, although retention was slightly compromised. The obtained membranes may be suitable for micro- or ultra-filtration and, at the same time, demonstrate the merits and limitations of DoE for multi-channel membrane screening.
Erratum: Fabrication of Chitin/Poly(butylene succinate)/Chondroitin Sulfate Nanoparticles Ternary Composite Hydrogel Scaffold for Skin Tissue Engineering. Polymers, 2014, 6, 2974–2984
Authors: Deepthi S. , Sidhy Viha C. , Thitirat Chaochai , Furuike Tetsuya , Tamura Hiroshi , Jayakumar Rangasamy
Published: March 2019

The authors wish to make a change to the published paper [...]
Synthesis of Porous Fe/C Bio-Char Adsorbent for Rhodamine B from Waste Wood: Characterization, Kinetics and Thermodynamics
Authors: Zhang Yao , Lou Zhichao , Wang Chaochao , Wang Weikai , Cai Jiabin
Published: March 2019

In the past decades, dyes waste waters produced from industries have become a major source of environmental pollution causing the destruction of aquatic communities in the ecosystem and greatly threatened human health. Herein, a novel magnetic adsorbent was synthesized by carbonizing iron (III) 2,4-pentanedionate (Fe(acac)3) pre-enriched forestry waste wood at a pyrolysis temperature of 1000 °C. The characterization of the adsorbent conducted via SEM, EDS, VSM, XRD, XPS, and FT-IR spectroscopy. The adsorption trend followed the pseudo-second order kinetics model. The corresponding adsorption performance was efficient with an equilibrium time of only 1 min. Affect factors on the adsorption performance, such as adsorbent dosage, contact time and temperature, were investigated. The magnetic bio-char showed a high adsorption capacity and an efficient adsorption toward RhB, implying great potential application in the treatment of colored wastewaters.
Data-Mining for Processes in Chemistry, Materials, and Engineering
Authors: Li Hao , Zhang Zhien , Zhao Zhe-Ze
Published: March 2019

With the rapid development of machine learning techniques, data-mining for processes in chemistry, materials, and engineering has been widely reported in recent years. In this discussion, we summarize some typical applications for process optimization, design, and evaluation of chemistry, materials, and engineering. Although the research and application targets are various, many important common points still exist in their data-mining. We then propose a generalized strategy based on the philosophy of data-mining, which should be applicable for the design and optimization targets for processes in various fields with both scientific and industrial purposes.
Concerning Some Marrano Threads in The Aesthetic Theory of Theodor W. Adorno
Authors: Górski Jakub
Published: March 2019

This article is an attempt to re-read the magnum opus of Adorno’s philosophy, namely Aesthetic Theory, using an interpretative key offered by Agata Bielik-Robson’s book entitled Jewish Cryptotheologies of Late Modernity: Philosophical Marranos. This interpretative key, called by the Author The Marrano Strategy implemented to Adorno’s late philosophy allows us to investigate the common points of Adorno’s theory of art criticism and modern Jewish thought. Therefore the main question of this text concerns the characteristics of Jewishness and messianicity (Scholem, Derrida) in Adorno’s Aesthetic Theory. The thesis that I am attempting to justify is as follows: the implementation of Marrano strategy to the modern art criticism redefines and reverses the relationship between the particular element and the universal domain. Consequently, this dialectical ‘appreciation’ of the particular establishes a common conceptual field for critical thinking and traditional, religious motifs.
Marital Sanctification and Spiritual Intimacy Predicting Married Couples’ Observed Intimacy Skills across the Transition to Parenthood
Authors: Padgett Emily , Mahoney Annette , Pargament Kenneth I. , DeMaris Alfred
Published: March 2019

This study examined the extent to which 164 married heterosexuals’ reports of the sanctification of marriage and spiritual intimacy during pregnancy predicted the trajectory of the couples’ observed intimacy skills during late pregnancy and when their first child was 3, 6, and 12 months old. At each time point, couples were videotaped in their homes for 10 min discussing their fears and vulnerabilities about becoming and being a new parent. Separate teams of three coders rated the four interactions and each spouse’s intimacy skills, including disclosure of feelings of vulnerability about becoming or being a new parent, and supportive comments and positive non-verbal responses to each other. Using a multi-level dyadic discrepancy approach to growth curve modeling, both husbands’ and wives’ observed intimacy skills displayed a curvilinear trajectory over the first year of parenthood, with wives consistently displaying more emotional intimacy skills than husbands. Consistent with hypotheses, higher endorsement of the sanctification of marriage and spiritual intimacy between spouses at home predicted higher observed intimacy skills across time. No variation in these associations emerged due to parent gender. Thus, this longitudinal study identifies two specific spiritual processes within marriages that may motivate spouses to share their vulnerabilities and provide one another with valuable emotional support in coping with the transition to parenthood.
From the Mosque to the Town Square: Some Reflections on Islam, Youth, Social Movements, and Citizenship
Authors: Madonia Salvatore , Planet Contreras Ana I.
Published: March 2019

An observation of the dynamics of the citizen participation of young people defined as Muslims who frequent Madrid’s mosques and squares raises the possibility that these young Spanish Muslims are developing their own civic/political participation as citizens and natives. This indicates a particular religious/cultural identification disassociated from the predefined religious view that characterizes them as actors in a process born out of their aspirations as citizens. For the most part, children of immigrants share an everyday experience in which they are defined by their religion, while also expressing their desire to break away from labels and distance themselves from the identification of Islam as experienced in immigrant communities, institutionalized Islam in mosques, associations and cultural centres, and the Islam of convert activism. The journey from the mosque to the town square is one taken time and again by these young people—followed during a multisited ethnography involving six years of research—that clears the way for a religiosity that is closely tied to the everyday experiences of young people continuously hearing about other situations (e.g., the war in Syria, the protests during the so-called Arab Spring, the 15 May Movement). In the process of differentiation and confrontation with Islamic people in the Spanish context, new association-building and new activism have emerged, with some connections to European youth associations and a growing commitment to global causes like the fight against Islamophobia and against international terrorism (the ‘Je suis Charlie’ movement) and feminist causes (#MeToo).
When Clinical History Addresses the Diagnosis in a Case of Uncommon Meningitis
Authors: Luciani Filippo , Cione Erika , Caroleo Maria Cristina , Corsonello Andrea , Colosimo Manuela , Gallelli Luca
Published: March 2019

Migraine pain is usually cyclic and may be evocated by inflammatory mediators released around the nerves and blood vessels. Acute migraine pain is more common in women than in men, and correlates with age. In this study, we report the development of an acute migraine attack in a young man (32 years old), which led to his admission to the emergency department. The positive functional brain changes recorded by electroencephalogram (EEG) during the migraine attack, and the non-contrast brain computed tomography scan showed the presence of an arachnoid cyst, which explained the acute migraine attack inducing a misdiagnosis. Using the case described herein, we aim to draw the attention of clinic/scientific communities toward the existence of brain infections in absence of the typical symptoms (e.g., fever and/or rigor nucalis). Considering this case, we propose that when a diagnosis is uncertain the invasive liquor test should be performed.
A Genetic Algorithm for Investment–Consumption Optimization with Value-at-Risk Constraint and Information-Processing Cost
Authors: Jin Zhuo , Yang Zhixin , Yuan Quan
Published: March 2019

This paper studies the optimal investment and consumption strategies in a two-asset model. A dynamic Value-at-Risk constraint is imposed to manage the wealth process. By using Value at Risk as the risk measure during the investment horizon, the decision maker can dynamically monitor the exposed risk and quantify the maximum expected loss over a finite horizon period at a given confidence level. In addition, the decision maker has to filter the key economic factors to make decisions. Considering the cost of filtering the factors, the decision maker aims to maximize the utility of consumption in a finite horizon. By using the Kalman filter, a partially observed system is converted to a completely observed one. However, due to the cost of information processing, the decision maker fails to process the information in an arbitrarily rational manner and can only make decisions on the basis of the limited observed signals. A genetic algorithm was developed to find the optimal investment, consumption strategies, and observation strength. Numerical simulation results are provided to illustrate the performance of the algorithm.
Multi-Channel Optical Receiver for Ground-Based Topographic Hyperspectral Remote Sensing
Authors: Salazar Sean E. , Coffman Richard A.
Published: March 2019

Receiver design is integral to the development of a new remote sensor. An effective receiver delivers backscattered light to the detector while optimizing the signal-to-noise ratio at the desired wavelengths. Towards the goal of effective receiver design, a multi-channel optical receiver was developed to collect range-resolved, backscattered energy for simultaneous hyperspectral and differential absorption spectrometry (LAS) measurements. The receiver is part of a new, ground-based, multi-mode lidar instrument for remote characterization of soil properties. The instrument, referred to as the soil observation laser absorption spectrometer (SOLAS), was described previously in the literature. A detailed description of the multi-channel receiver of the SOLAS is presented herein. The hyperspectral channel receives light across the visible near-infrared (VNIR) to shortwave infrared (SWIR) spectrum (350–2500 nm), while the LAS channel was optimized for detection in a narrower portion of the near-infrared range (820–850 nm). The range-dependent field of view for each channel is presented and compared with the beam evolution of the SOLAS instrument transmitter. Laboratory-based testing of each of the receiver channels was performed to determine the effectiveness of the receiver. Based on reflectance spectra collected for four soil types, at distances of 20, 35, and 60 m from the receiver, reliable hyperspectral measurements were gathered, independent of the range to the target. Increased levels of noise were observed at the edges of the VNIR and SWIR detector ranges, which were attributed to the lack of sensitivity of the instrument in these regions. The suitability of the receiver design, for the collection of both hyperspectral and LAS measurements at close-ranges, is documented herein. Future development of the instrument will enable the combination of long-range, ground-based hyperspectral measurements with the LAS measurements to correct for absorption, due to atmospheric water vapor. The envisioned application for the instrument includes the rapid characterization of bare or vegetated soils and minerals, such as are present in mine faces and tailings, or unstable slopes.
Scattering Characterization of Obliquely Oriented Buildings from PolSAR Data Using Eigenvalue-Related Model
Authors: Quan Sinong , Xiong Boli , Xiang Deliang , Hu Canbin , Kuang Gangyao
Published: March 2019

Scattering characterization of obliquely oriented buildings (OOBs) from polarimetric synthetic aperture radar (PolSAR) data is challenging since the general double-bounce scattering does not support their dominant scattering mechanism. In this paper, a physical scattering model combining the eigenvalues of coherency matrix is proposed to characterize the scattering of OOBs. The coherency matrix is first operated by eigenvalue decomposition and a refined OOB descriptor is presented based on these eigenvalues. Considering the actual proportions of co-polarization and cross-polarization components, the descriptor is then adopted to modify the matrix elements of the well-known cross scattering model, thus introducing the OOB scattering model. Finally, strategies of model parameter solution are designed and the involved decomposition is complete accordingly. The proposed method is tested on spaceborne and airborne PolSAR data and the results confirm its effectiveness, which clearly call for further research and application.
Using the Himawari-8 AHI Multi-Channel to Improve the Calculation Accuracy of Outgoing Longwave Radiation at the Top of the Atmosphere
Authors: Kim Bu-Yo , Lee Kyu-Tae
Published: March 2019

In this study, Himawari-8 Advanced Himawari Imager (AHI) longwave channel data that is sensitive to clouds and absorption gas were used to improve the accuracy of the algorithm used to calculate outgoing longwave radiation (OLR) at the top of the atmosphere. A radiative transfer model with a variety of atmospheric conditions was run using Garand vertical profile data as input data. The results of the simulation showed that changes in AHI channels 8, 12, 15, and 16, which were used to calculate OLR, were sensitive to changes in cloud characteristics (cloud optical thickness and cloud height) and absorption gases (water vapor, O3, CO2, aerosol optical thickness) in the atmosphere. When compared to long-term analysis OLR data from 2017, as recorded by the Cloud and Earth’s Radiant Energy System (CERES), the OLR calculated in this study had an annual mean bias of 2.28 Wm−2 and a root mean square error (RMSE) of 11.03 Wm−2. The new calculation method mitigated the problem of overestimations in OLR in mostly cloudy and overcast regions and underestimated OLR in cloud-free desert regions. It is also an improvement over the result from the existing OLR calculation algorithm, which uses window and water vapor channels.
A High-Multi Target Resolution Focal Plane Array-Based Laser Detection and Ranging Sensor
Authors: Kim Hyeon-June , Lee Eun-Gyu , Kim Choul-Young
Published: March 2019

This paper introduces a digital-assisted multiple echo detection scheme, which utilizes the waste time of the full serial data readout period in a focal plane array (FPA)-based laser detection and ranging (LADAR) receiver. With the support of an external digital signal processor (DSP) and additional analog memory inserted into the receiver, the proposed readout scheme can effectively enhance multi-target resolution (MTR) three times higher than the conventional FPA-based LADAR, while maintaining low power consumption and a small area. A prototype chip was fabricated in a 0.18-μm CMOS process with an 8 × 8 FPA configuration, where each single receiver pixel occupied an area of 100 μm × 100 μm. The single receiver achieved an MTR of 20 ns with 7.47 mW power dissipation, an input referred noise current of 4.48 pA/√Hz with a bandwidth 530 MHz, a minimum detectable signal (MDS) of 340 nA, a maximum walk error of 2.2 ns, and a maximum non-linearity of 0.05% among the captured multiple echo images.
The Development and Field Evaluation of an IoT System of Low-Power Vibration for Bridge Health Monitoring
Authors: Tong Xinlong , Yang Hailu , Wang Linbing , Miao Yinghao
Published: March 2019

Bridge safety is important for the safety of vehicles and pedestrians. This paper presents a study on the development of a low-power wireless acceleration sensor and deployment of the sensors on a wireless gateway and cloud platform following the Internet of Things (IoT) protocols for bridge monitoring. The entire system was validated in a field test on the Chijing bridge in Shanghai. Field evaluations indicated that the developed IoT bridge monitoring system could achieve the functions of real-time data acquisition, transmission, storage and analytical processing to synthesize safety information of the bridge. The demonstrated system was promising as a complete, practical, readily available, low-cost IoT system for bridge health monitoring.
Rethinking Family-Centred Design Approach Towards Creating Digital Products and Services
Authors: Trilar Jure , Zavratnik Veronika , Čermelj Vid , Hrast Barbara , Kos Andrej , Stojmenova Duh Emilija
Published: March 2019

This article provides further study of a family-centred design approach model established in previous studies, which aims to correspond to the limitations and needs of modern families using information and communication technology (ICT) solutions for common activities, communication and organisation of family time. The ambition is to systematically define and design features (functionalities) of a prototype solution that connects family members; provides proper communication; promotes active quality family time, active life, a health-friendly lifestyle and well-being; and uses various sensor- and user-based data sources through a smart city ecosystem platform. The original approach model was applied in designing the MyFamily progressive web application prototype solution as part of the EkoSmart: Active Living and Well-Being Project (RRP3) funded by the Republic of Slovenia and the European Regional Development Fund Investing in Your Future program. Extensive testing of the prototype solution used and the triangulation method used within thematic analysis for user interviews provide new insights and proposals for the change of the family-centred design approach model in the form of distinct developmental goals narrative for each generation to enhance motivation and relevance of content to different generations of users of such digital solutions.
Continuous Live-Cell Culture Imaging and Single-Cell Tracking by Computational Lensfree LED Microscopy
Authors: Scholz Gregor , Mariana Shinta , Dharmawan Agus Budi , Syamsu Iqbal , Hörmann Philipp , Reuse Carsten , Hartmann Jana , Hiller Karsten , Prades Joan Daniel , Wasisto Hutomo Suryo , Waag Andreas
Published: March 2019

Continuous cell culture monitoring as a way of investigating growth, proliferation, and kinetics of biological experiments is in high demand. However, commercially available solutions are typically expensive and large in size. Digital inline-holographic microscopes (DIHM) can provide a cost-effective alternative to conventional microscopes, bridging the gap towards live-cell culture imaging. In this work, a DIHM is built from inexpensive components and applied to different cell cultures. The images are reconstructed by computational methods and the data are analyzed with particle detection and tracking methods. Counting of cells as well as movement tracking of living cells is demonstrated, showing the feasibility of using a field-portable DIHM for basic cell culture investigation and bringing about the potential to deeply understand cell motility.
A Secured Proxy-Based Data Sharing Module in IoT Environments Using Blockchain
Authors: Obour Agyekum Kwame Opuni-Boachie , Xia Qi , Sifah Emmanuel Boateng , Gao Jianbin , Xia Hu , Du Xiaojiang , Guizani Moshen
Published: March 2019

Access and utilization of data are central to the cloud computing paradigm. With the advent of the Internet of Things (IoT), the tendency of data sharing on the cloud has seen enormous growth. With data sharing comes numerous security and privacy issues. In the process of ensuring data confidentiality and fine-grained access control to data in the cloud, several studies have proposed Attribute-Based Encryption (ABE) schemes, with Key Policy-ABE (KP-ABE) being the prominent one. Recent works have however suggested that the confidentiality of data is violated through collusion attacks between a revoked user and the cloud server. We present a secured and efficient Proxy Re-Encryption (PRE) scheme that incorporates an Inner-Product Encryption (IPE) scheme in which decryption of data is possible if the inner product of the private key, associated with a set of attributes specified by the data owner, and the associated ciphertext is equal to zero 0 . We utilize a blockchain network whose processing node acts as the proxy server and performs re-encryption on the data. In ensuring data confidentiality and preventing collusion attacks, the data are divided into two, with one part stored on the blockchain network and the other part stored on the cloud. Our approach also achieves fine-grained access control.
The Role of Language in Anti-Immigrant Prejudice: What Can We Learn from Immigrants’ Historical Experiences?
Authors: Wei Kai , Jacobson López Daniel , Wu Shiyou
Published: March 2019

Prejudice remains an unpleasant experience in immigrants’ everyday lives, especially for those of stigmatized groups. In the recurring struggle of various immigrant groups, historical and contemporary events reveal the important role of language in the creation, transmission, and perpetuation of anti-immigrant prejudice. Living in an anti-immigrant climate, immigrants are frequently exposed to stigmatizing language in both political and social discourse. This may be a more significant and frequent experience for immigrants since the beginning of the 2016 United States presidential election. Although it has long been understood that language is inextricably linked with prejudice, the investigation of the role of language in creating, transmitting, and perpetuating anti-immigrant prejudice remains undeveloped in social work research. This paper provides a theoretical explanation of anti-immigrant sentiment by discussing how stigmatization has allowed for immigrants to be subjected to various forms of prejudice throughout history. Building upon prior theoretical concepts of stigma, this paper argues that being an immigrant is a stigma. This paper reviews historical and contemporary cases of prejudice against immigrants to provide evidence for how stigmatizing language transmits and perpetuates anti-immigrant prejudice in the United States and building upon prior stigma theories, defines one’s status of an immigrant to be form of stigma itself. The paper concludes with a call for appreciable attention to the role of language in anti-immigrant prejudice and the need for social workers to advocate for immigrants within higher education and in our communities to reduce such stigma though social work practice, education and research.
Online and On-Site Interactions within Alternative Food Networks: Sustainability Impact of Knowledge-Sharing Practices
Authors: De Bernardi Paola , Bertello Alberto , Venuti Francesco
Published: March 2019

The sustainability debate in the food sector has exposed the current food system to critics, encouraging the significant growth of Alternative Food Networks (AFNs), new ways of food production, distribution and consumption that aim to shorten the food chain. Our study is focused on Food Assembly (FA), a special kind of AFN combining the culture of social entrepreneurship and digital innovation to achieve sustainability and a high social impact. The coexistence of a digital platform and a weekly farmers’ market triggers, within this network, mechanisms of knowledge sharing and self-organisation. To date, however, few studies have focused simultaneously on online and on-site interactions within AFNs, especially with quantitative studies. Our paper aims to test the hypothesis that online and on-site knowledge sharing affects the success of a FA measured by customer sustainable behaviour change. To do so, we developed a quantitative analysis based on a regression model. We collected data via a questionnaire submitted to 8497 Italian FA customers, of which 2115 responses were included in our analysis. The results show that online knowledge sharing significantly affects customer change towards more sustainable purchasing and consumption behaviours, while on-site knowledge sharing positively affects sustainable purchasing behaviours.
China’s Energy Consumption Rebound Effect Analysis Based on the Perspective of Technological Progress
Authors: Liao Maolin , Wang Yingjie
Published: March 2019

Energy issues are the focus of global concern, and estimations of the energy rebound effect are very important for energy policy. Existing research has proved the existence of the energy rebound effect. This paper, based on the estimation of China’s capital stock in 1952, establishes three elements of the neoclassical production function to calculate the contribution rate of technological progress on economic growth. It then calculates China’s energy rebound effect over the past 20 years from the perspective of technological progress. The research results show that though China’s energy intensity has been declining from 1994 to 2017, the energy rebound effect each year is obviously different, with an average level of 54.4%. Technological progress leads to the improvement of energy efficiency, which reduces energy consumption, but the rebound effect makes energy savings less effective than expected. This paper proved the Granger causality between energy structure adjustment and the rebound effect. And the increase of coal consumption will enhance the rebound effect. So, upgrading the structure of energy consumption is considered helpful to reduce the energy rebound effect, which can promote energy conservation and emission reduction.
Transcending the Learned Ignorance of Predatory Ontologies: A Research Agenda for an Ecofeminist-Informed Ecological Economics
Authors: Ruder Sarah-Louise , Sanniti Sophia Rose
Published: March 2019

As a necessarily political act, the theorizing, debating and enacting of ecological economies offer pathways to radical socio-economic transformations that emphasize the ecological and prioritize justice. In response to a research agenda call for ecological economics, we propose and employ an ecofeminist frame to demonstrate how the logics of extractivist capitalism, which justify gender biased and anti-ecological power structures inherent in the growth paradigm, also directly inform the theoretical basis of ecological economics and its subsequent post-growth proposals. We offer pathways to reconcile these epistemological limitations through a synthesis of ecofeminist ethics and distributive justice imperatives, proposing leading questions to further the field.
Development of a New Clean Development Mechanism Methodology for the Quantification of Greenhouse Gas in Calcium Sulfoaluminate Cement
Authors: Jeon Eun-don , Lee Kyu-uk , Lee Chung-kook
Published: March 2019

The purpose of this research was to probe beyond the scope of the “National Strategy Project on Carbon Mineralization” to develop a “United Nations Framework Convention on Climate Change, Clean Development Mechanism” (UNFCCC CDM) methodology that enables reduction of greenhouse gas (GHG) by “green cement” under the calcium sulfoaluminate (CSA) cement technologies. The findings will be utilized as the foundations and developed into the UNFCCC CDM project. There were two existing methodologies related to cement, but neither was applicable for CSA cement. The existing methodologies are applicable only when there is one clinker, but CSA cement utilizes more than one clinker. Through this research, we developed methodologies to use waste-based material for avoiding emission leakage and utilized more than one clinker to calculate GHG emissions and reduction. For this purpose, we utilized the CSA cement methodology for calculating GHG reduction compared to Portland cement and found that CSA cement allowed for a reduction of 0.281 tCO2-eq/ton above the reduction enabled by Portland cement. We are presently preparing to register the CSA cement methodology for UNFCCC CDM methodology approval. With the technology transfer and support for this CSA cement technology and methodology, developing countries will be able to achieve their national GHG reduction targets and gain carbon credits. Thus, CSA cement technology could serve as an important tool to deal with GHG emissions and climate change.
Carbon Footprint as a Lever for Sustained Competitive Strategy in Developing a Smart Oenology: Evidence from an Exploratory Study in Italy
Authors: Galletto Luigi , Barisan Luigino
Published: March 2019

In the wine sector, the choice of a sustainable strategy based on smart marketing has gained more relevance due to the growing importance of sustainability. The literature illustrates a multiplicity of perspectives, wherever firms are committed to improving sustainability and market performance. This exploratory paper aims to make sense of the extant literature by analysing 10 case studies in Italy, focusing on sustainable competitive resources and strategies, considering the role of CF (Carbon Footprint) as a crucial factor. The research has considered a complementary theoretical framework based on both Resource-Based Theory and Competitive Advantage Theory. Data were analysed by descriptive statistical techniques. The results show a bundle of unique resources and strategies in pursuing firm performance, wherever CF may lead to significant sustained competitive advantages in firms’ value capture (ex. image and reputation and customers’ relationships loyalty, entrance into new foreign markets). Findings highlight that perceiving the costs and benefits of investments in lowering CF may guide to a more accurate understanding of the value-creating from the different type of eco-innovation for building tailor-made communicational and marketing strategies.
Questions of Mirror Symmetry at the Photoexcited and Ground States of Non-Rigid Luminophores Raised by Circularly Polarized Luminescence and Circular Dichroism Spectroscopy. Part 2: Perylenes, BODIPYs, Molecular Scintillators, Coumarins, Rhodamine B, and DCM
Authors: Fujiki Michiya , Koe Julian R. , Amazumi Seiko
Published: March 2019

We investigated whether semi-rigid and non-rigid π-conjugated fluorophores in the photoexcited (S1) and ground (S0) states exhibited mirror symmetry by circularly polarized luminescence (CPL) and circular dichroism (CD) spectroscopy using a range of compounds dissolved in achiral liquids. The fluorophores tested were six perylenes, six scintillators, 11 coumarins, two pyrromethene difluoroborates (BODIPYs), rhodamine B (RhB), and 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM). All the fluorophores showed negative-sign CPL signals in the ultraviolet (UV)–visible region, suggesting energetically non-equivalent and non-mirror image structures in the S1 state. The dissymmetry ratio of the CPL (glum) increased discontinuously from approximately −0.2 × 10−3 to −2.0 × 10−3, as the viscosity of the liquids increased. Among these liquids, C2-symmetrical stilbene 420 showed glum ≈ −0.5 × 10−3 at 408 nm in H2O and D2O, while, in a viscous alkanediol, the signal was amplified to glum ≈ −2.0 × 10−3. Moreover, BODIPYs, RhB, and DCM in the S0 states revealed weak (−)-sign CD signals with dissymmetry ratios (gabs) ≈ −1.4 × 10−5 at λmax/λext. The origin of the (−)-sign CPL and the (−)-sign CD signals may arise from an electroweak charge at the polyatomic level. Our CPL and CD spectral analysis could be a possible answer to the molecular parity violation hypothesis based on a weak neutral current of Z0 boson origin that could connect to the origin of biomolecular handedness.
A Model-to-Monitor Evaluation of 2011 National-Scale Air Toxics Assessment (NATA)
Authors: Xue Zhuqing , Jia Chunrong
Published: March 2019

Environmental research has widely utilized the ambient concentrations of hazardous air pollutants (HAPs) modeled by the National-Scale Air Toxics Assessment (NATA) program; however, limited studies have evaluated the model’s performance. This study aims to evaluate the model-to-monitor agreement of the 2011 NATA data with the monitoring data reported to the U.S. Environmental Protection Agency’s (EPA) Air Quality System (AQS). Concentrations of 27 representative HAPs measured at 274 sites in the U.S. in 2011 were merged with NATA data by census tract. The comparison consisted of two steps for each HAP: first, the model-monitor difference at each site was compared with the limit of quantitation (LOQ); second, the modeled annual average was compared to the 95% confidence interval of the monitored annual average. Nationally, NATA could predict national medians of most HAPs well; however, it was unable to capture high concentrations. At individual sites, a large portion of model-monitor differences was below the LOQs, indicating they were unquantifiable. Model-to-monitor agreement displayed inconsistent patterns in terms of chemical groups or EPA regions and was strongly impacted by the comparison methods. The substantial non-agreements of NATA predictions with monitoring data require caution in environmental epidemiology and justice studies that are based on NATA data.
New Mastoparan Peptides in the Venom of the Solitary Eumenine Wasp Eumenes micado
Authors: Konno Katsuhiro , Kazuma Kohei , Rangel Marisa , Stolarz-de-Oliveira Joacir , Fontana Renato , Kawano Marii , Fuchino Hiroyuki , Hide Izumi , Yasuhara Tadashi , Nakata Yoshihiro
Published: March 2019

Comprehensive LC-MS and MS/MS analysis of the crude venom extract from the solitary eumenine wasp Eumenes micado revealed the component profile of this venom mostly consisted of small peptides. The major peptide components, eumenine mastoparan-EM1 (EMP-EM1: LKLMGIVKKVLGAL-NH2) and eumenine mastoparan-EM2 (EMP-EM2: LKLLGIVKKVLGAI-NH2), were purified and characterized by the conventional method. The sequences of these new peptides are homologous to mastoparans, the mast cell degranulating peptides from social wasp venoms; they are 14 amino acid residues in length, rich in hydrophobic and basic amino acids, and C-terminal amidated. Accordingly, these new peptides can belong to mastoparan peptides (in other words, linear cationic α-helical peptides). Indeed, the CD spectra of these new peptides showed predominantly α-helix conformation in TFE and SDS. In biological evaluation, both peptides exhibited potent antibacterial activity, moderate degranulation activity from rat peritoneal mast cells, and significant leishmanicidal activity, while they showed virtually no hemolytic activity on human or mouse erythrocytes. These results indicated that EMP-EM peptides rather strongly associated with bacterial cell membranes rather than mammalian cell membranes.
Proanthocyanidins Alleviates AflatoxinB1-Induced Oxidative Stress and Apoptosis through Mitochondrial Pathway in the Bursa of Fabricius of Broilers
Authors: Rajput Shahid Ali , Zhang Cong , Feng Yue , Wei Xiao Tian , Khalil Mahmoud Mohamed , Rajput Imran Rashid , Baloch Dost Muhammad , Shaukat Aftab , Rajput Nasir , Qamar Hammad , Hassan Mubashar , Qi Desheng
Published: March 2019

Aflatoxin B1 (AFB1) is a serious threat to the poultry industry. Proanthocyanidins (PCs) demonstrates a broad range of biological, pharmacological, therapeutic, and chemoprotective properties. The aim of this study was to investigate the ameliorative effects of PCs against AFB1-induced histopathology, oxidative stress, and apoptosis via the mitochondrial pathway in the bursa of Fabricius (BF) of broilers. One hundred forty-four one-day old Cobb chicks were randomly assigned into four treatment groups of six replicates (6 birds each replicate) for 28 days. Groups were fed on the following four diets; (1) Basal diet without addition of PCs or AFB1 (Control); (2) basal diet supplemented with 1 mg/kg AFB1 from contaminated corn (AFB1); (3) basal diet supplemented with 250 mg/kg PCs (PCs); and (4) basal diet supplemented with 1 mg/kg AFB1 + 250 mg/kg PCs (AFB1+ PCs). The present study results showed that antioxidant enzymes activities of total superoxide dismutase (T-SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione S-transferase (GST) in AFB1 treated group were (p < 0.05) decreased, whereas malondialdehyde (MDA) contents were significantly increased in comparison with the control group. Furthermore, we found that dietary PCs treatment ameliorated AFB1-induced oxidative stress in the BF through inhibiting the accumulation of MDA content and enhancing the antioxidant enzymes activities (T-SOD, CAT, GSH-Px, and GST). Similarly, PCs markedly enhanced messenger RNA (mRNA) expression of antioxidant genes (SOD, CAT, GPx1, and GST) in comparison with AFB1 group. Moreover, histological results showed that PCs alleviated AFB1-induced apoptotic cells in the BF of broilers. In addition, both mRNA and protein expression results manifested that mitochondrial-apoptosis-associated genes (Bax, caspase-9, caspase-3, and p53 and cytochrome c) showed up-regulation, while (Bcl-2) showed down-regulation in AFB1 fed group. The supplementation of PCs to AFB1 diet significantly reversed the mRNA and protein expression of these apoptosis-associated genes, as compared to the AFB1 group. Our results demonstrated that PCs ameliorated AFB1-induced oxidative stress by modulating the antioxidant defense system and apoptosis in the BF through mitochondrial pathway in broilers.
On the Necessity of Phantom Fields for Solving the Horizon Problem in Scalar Cosmologies
Authors: Fermi Davide , Gengo Massimo , Pizzocchero Livio
Published: March 2019

We discuss the particle horizon problem in the framework of spatially homogeneous and isotropic scalar cosmologies. To this purpose we consider a Friedmann–Lemaître–Robertson–Walker (FLRW) spacetime with possibly non-zero spatial sectional curvature (and arbitrary dimension), and assume that the content of the universe is a family of perfect fluids, plus a scalar field that can be a quintessence or a phantom (depending on the sign of the kinetic part in its action functional). We show that the occurrence of a particle horizon is unavoidable if the field is a quintessence, the spatial curvature is non-positive and the usual energy conditions are fulfilled by the perfect fluids. As a partial converse, we present three solvable models where a phantom is present in addition to a perfect fluid, and no particle horizon appears.
Reflection Identities of Harmonic Sums of Weight Four
Authors: Prygarin Alexander
Published: March 2019

In attempt to find a proper space of function expressing the eigenvalue of the color-singlet BFKL equation in N = 4 SYM, we consider an analytic continuation of harmonic sums from positive even integer values of the argument to the complex plane. The resulting meromorphic functions have pole singularities at negative integers. We derive the reflection identities for harmonic sums at weight four decomposing a product of two harmonic sums with mixed pole structure into a linear combination of terms each having a pole at either negative or non-negative values of the argument. The pole decomposition demonstrates how the product of two simpler harmonic sums can build more complicated harmonic sums at higher weight. We list a minimal irreducible set of bilinear reflection identities at weight four, which represents the main result of the paper. We also discuss how other trilinear and quadlinear reflection identities can be constructed from our result with the use of well known quasi-shuffle relations for harmonic sums.