bluuebunny/crossref_metadata_2025 huggingface dataset:
Influences on food supply from elk abundance and precipitation early in the growing season
Authors: Williamson Lee H. , Weckerly Floyd W.
Published: March 2022

Large grazing mammals should negatively affect forage biomass of their food supply, but documentation is lacking in free ranging populations. Furthermore, complications from factors such as weather patterns and spatial heterogeneity might obscure grazing effects on the food supply. We examined influences of Roosevelt elk (Cervus canadensis roosevelti (Merriam, 1897)) abundance and precipitation on forage biomass at two spatial scales; meadows that contained most of the food supply, and sectors nested in meadows. Spatial heterogeneity in forage biomass might also decline with increasing elk abundance. Elk abundance was estimated from population counts and varied 3.9-fold across the 15 years of study in northwestern California, USA. Each January, early in the growing season, we estimated forage biomass in the 50-ha meadow complex used by the elk population. Measures of palatable forage cover and height were taken in 270 ¼ m2 plots dispersed throughout sectors. These measurements were then related to dried forage biomass. At both spatial scales, elk abundance was inversely, and precipitation was positively related to forage biomass. At the sector scale, analysis of a linear mixed effect model indicated heterogeneity. In some sectors both predictors were related to forage biomass and in other sectors they were not. Heterogeneity was not from uneven elk grazing as elk grazed sectors in proportion to forage biomass. The varied elk abundance–forage biomass relationships across sectors indicated that spatial heterogeneity declined with increasing elk abundance. Detecting relationships between free ranging ungulate populations and biomass of their food supply is not straightforward.
La Costa Rica excepcional: un centenario en tiempos inciertos The exceptional Costa Rica: a centennial in uncertain times
Authors: Acuña Ortega Víctor Hugo
Published: March 2022

Este ensayo describe y explica los festejos del centenario de la independencia en Costa Rica realizados en 1921, en el contexto de esa celebración por todos los Estados centroamericanos. Describe el ceremonial cívico y religioso en que fueron realizados e identifica sus actores principales. Señala el contexto local, una crisis política y económica, regional, un fracasado intento de reconstrucción de la unión centroamericana, e internacional, el ascenso de Estados Unidos como potencia global y regional. Señala su significado ideológico cuyo eje fue la promoción del carácter excepcional de Costa Rica como Estado y como nación, frente a los otros países centroamericanos. Sin embargo, señala también que la celebración de la diferencia costarricense en el centenario estuvo marcada por dudas de fondo sobre la posibilidad de preservar esa condición excepcional, en el contexto de las secuelas de la Primera Guerra Mundial y de la inestabilidad y crisis que el país arrastraba de 1917, por una crisis económica y fiscal, una dictadura, una guerra con Panamá y un mayor sometimiento a Estados Unidos.
Conflicto político en la conmemoración del centenario de la independencia en El Salvador
Authors: Lindo Fuentes Héctor
Published: March 2022

Para interpretar el significado de los actos de conmemoración del Centenario de la independencia de El Salvador, es necesario estudiar las ramificaciones del Pacto de Unión de Centroamérica firmado por el país a principios de año, una profunda crisis económica, el activismo de obreros y mujeres inspirados por el unionismo, las negociaciones del Gobierno para obtener un importante empréstito y el deseo de Estados Unidos de consolidar su esfera de influencia. La comprensión de estos factores muestra que el ceremonial del Centenario reflejó a un país profundamente dividido.
Az emberi tőkét fejlesztő „fogyasztás” (táplálkozás, oktatás, egészségügy, szociális ellátások) a termelékenységet növelő beruházás”
Authors: Trautmann László , Sipos Sándor
Published: March 2022

A Köz-Gazdaság interjút kért Sipos Sándortól, a Világbank korábbi tanácsadójától, az Európai Uniós főtanácsadójától. Sipos Sándor 1981-ben végzett az akkori Marx Károly Közgazdaságtudományi Egyetemen, ezt követően a Világgazdasági Kutatóintézetben helyezkedett el. 1990 és 1992 között az UNICEF firenzei irodájában, 1992 és 1997 között a Világbank Human Development Operations egységénél dolgozott, Európa és a közép-ázsiai térség tartozott hozzá. Ennek keretében foglalkozott a térség nyugdíjpolitikájával és szociálpolitikájával. 1998 és 2001 között a horvátországi Világbank kirendeltséget vezette. 2001 és 2008 között újra Washingtonban, a Világbank központjában vezette az emberi erőforrás fejlesztésével foglalkozó különböző szervezeti egységeket. 2008 és 2013 között az Európai Unió főmegbízottjaként koordinálta a Világbank és az EU együttműködését. 2013 és 2017 között a Világbank washingtoni központjában volt tanácsadó és menedzser.
Avaliação sazonal da qualidade sanitária, físico-química e microbiológica do leite cru produzido no Instituto Federal Sudeste de Minas Gerais, Campus Rio Pomba
Authors: Neiva Júnior Arnaldo Prata , Soares Geanne Ribeiro , Soares Priscila Karen Ribeiro , Ramos Neto Kélvia Xavier Costa , Teixeira Rafael Monteiro Araújo , Tavares Valdir Botega , Jayme Cristiano Gonzaga
Published: March 2022

O leite é um alimento rico em nutrientes contendo proteínas, carboidratos, gorduras, vitaminas e sais minerais. Sua qualidade é fundamental para garantir que o alimento seja considerado seguro para o consumidor, apresentando coloração branca opalescente, homogeneidade, não conter grumos ou material sólido e não apresentar odores ou sabores estranhos. Objetivou-se avaliar a qualidade físico[1]química e microbiológica do leite cru produzido no Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais – IF Sudeste MG, Campus Rio Pomba, nas estações seca e chuvosa, de acordo com a Instrução Normativa – IN nº 76/2018 do Ministério da Agricultura, Pecuária e Abastecimento – MAPA. O experimento foi realizado no período de janeiro de 2017 a dezembro de 2018 no departamento de Zootecnia do IF Sudeste MG, Campus Rio Pomba. As coletas foram realizadas uma vez ao mês diretamente no tanque de armazenamento de leite e analisadas no laboratório credenciado pelo MAPA, Laboratório de Qualidade do Leite (LQL), na Embrapa Gado de Leite em Juiz de Fora, MG. Foram realizadas análises de composição físico-química (teores, em % m/m, de gordura, proteína, lactose e extrato seco total) e microbiológicas (contagem bacteriana total e contagem de células somáticas) para avaliar se houve diferença significativa (p 0,05) entre os parâmetros físico-químicos e microbiológicos do leite nos períodos seco e chuvoso. Concluiu-se que o leite in natura avaliado atendeu a todos os critérios estabelecidos pela legislação atual, obtendo a qualidade compatível com a IN nº 76/2018 nas diferentes estações do ano.
Rapid Transition to Blended Learning
Authors: McKerlie Robert Allen , Malcolm Jennifer , Varsou Ourania , Kennedy Christopher Edward , Colgan Laura , Harper Victoria , McAllan Wendy , Forgie Andrew , Rea Paul , Bell Aileen
Published: March 2022

The University of Glasgow Bachelor of Dental Surgery (BDS) degree programme is a practical clinical professionally regulated discipline. Given the mode of transmission of SARS Cov-2 the dental profession and associated programmes of study have been significantly impacted by the COVID-19 pandemic, necessitating a rapid pivot to online and blended learning. This case study shows how the work of early adopters of technology enhanced learning and teaching (TELT) at the dental school, and a timely staff-student partnership helped to lay the foundations for this pivot in response to the challenges brought about by the pandemic.

A large amount of teaching required modification and adaptation to support remote delivery and, through collaboration, innovation and supported creativity, we were able to produce some very effective models for learning and teaching. To illustrate this, two specific examples have been presented: a novel approach to support the delivery of essential local anaesthesia training for second year dental students using collaborative wikis and online learning; and the use Microsoft Teams to support student integration and a sense of community among our first year dental students through active, small group collaborative learning.

The challenges of the COVID-19 pandemic have provided the opportunity to align the teaching of practical skills with technology and instil a positive shift in institutional practices. The effectiveness of this shift within the BDS degree programme and the impact on the development of our students will remain the focus of the school’s TELT partnership.
Lessons learned from being BOLD: Staff experiences of an institutional strategic project in Blended and Online Learning Development
Authors: Dale Vicki Harcus Morgan , Kubincova Eva , Kerr John , Murray Jo-Anne
Published: March 2022

In recent years, tertiary institutions have engaged more with digital education, especially blended and online learning. One institution sought to transform its existing provision, and enhance learning and teaching, through a substantial strategic funding initiative comprising almost 20 individual projects.

To capture the learning from this substantial investment, 20 semi-structured interviews were carried out with staff involved in setting up or working on these projects, typically early adopters. Interviews sought to revisit motivations to engage with the project, and capture perceived benefits including lessons learned, challenges, enablers, support needs and recommendations going forwards.

Participants were motivated to enhance their own teaching practice and improve student learning experience/outcomes. Recognised benefits included enhanced learner experience, transformed teaching practice, flexibility and access, teaching efficiencies, and developmental opportunities for staff. Significant challenges related to the time required to design, develop and implement courses, as well as technological and student-related issues. Despite these challenges, participation in the project led to the development of new skills and transformed teachers’ learning and teaching practice. This was made possible through a number of enablers including prior experience of blended learning, and supportive others from across various services, schools and colleges.

The study highlights the importance of strategic projects in expanding the digital capabilities of an institution to meet the expected—and unexpected—demands of the future. The findings are discussed in the context of the current literature on blended and remote learning, and existing institutional frameworks that support transitions to blended learning.
As políticas de ação afirmativa e a Universidade Federal Rural do Rio de Janeiro – Breve apontamento histórico
Authors: Costa Ricardo Dias da
Published: March 2022

Neste texto que traz as políticas de ação afirmativa como tema central, além de resgatar conceitos importantes, apresenta-se a aplicabilidade da equidade. Esta discussão oportunizou resgatar um pouco da história da UFRRJ e a sua relação com as políticas de ação afirmativa etnicamente referenciadas ou não. Embora a Lei Federal 13.409./2016 ao atualizar a Lei 12.711/2012 inclua nela pessoas com deficiência como sujeitos de direito de tal política, as lentes analíticas aqui estarão voltadas especificamente para as pessoas pretas e pardas que ingressaram na UFRRJ servindo-se da Lei Federal 12711/2012.
Lindas y carismáticas.
Authors: Chelotti Verónica
Published: March 2022

En este artículo proponemos analizar la representación de las inmigrantes argentinas en el cine de ficción producido en España entre los años 2002 y 2010. Nos interesa indagar en las estrategias que utilizan los filmes para construir personajes femeninos que refuerzan los prejuicios del mundo real, y su contexto histórico: la crisis económica, política y social argentina del 2001. Para ello proponemos un recorrido interdisciplinar que entrama los estudios de género, la historia, la comunicación y el cine. El corpus fílmico está compuesto por las ficciones españolas: Abrígate (Costafreda, 2007) y Pagafantas (Cobeaga, 2009).
A Comprehensive Review on Metal Matrix Composites for Railway Applications
Authors: Kumar Mohit Hemanth , Rangappa Sanjay Mavinkere , Siengchin Suchart
Published: March 2022

The railways produce the backbone of all passengers, transporting goods and economies. Railway compartments play a critical role in safety and track performance in rail transportation. Composite-based sleeper is developed into an adequate substitute for recovering the existing steel, concrete, and specifically timber sleeper in heavyhaul rail and mainline networks. Composite sleeper methodologies are earlier abundant, but they have captured restricted acceptance from the railway industry. Presently, the composite sleeper methodologies are significant, ranging from sleepers created with recycled components initiating from construction waste, rubber, and plastic. While these recycled components based sleepers are lower price, the primary issues of utilizing this these kinds of sleepers are their limited dynamics, stiffness, strength characteristics that, in most conditions, are incompatible with those of conventional timber, steel, or concrete sleepers. The essential for novel material with standard features have paved the path to developing and emerging components from metal matrix composites. Parts that acquire prescribed characteristics, like including strength, good toughness, higher resistance from corrosion, and wear in their fibrous medium are favorably reinforced with fundamental metal to fabricate metal matric composites. In this review paper, the components of railway systems, different types of fabricating metal matrix composites, issues while conducting experiments, sustainability, life cycle assessment, and waste management are explored together with the present complexities opposing their whole market avenue.
Citrus Flavonoids from Citrus reticulata Peels Potentially Target an Autophagy Modulator, MAP1LC3A, in Breast Cancer
Authors: Anggoro Bayu , Kumara Dennaya , Angelina Dhella , Ikawati Muthi
Published: March 2022

Citrus flavonoids have been known for their vast biological activities including chemoprevention activities. However, the organic solvent extraction system limits its potential utilization. We recently adopted a hydrodynamic-cavitation method to extract citrus flavonoids from citrus peels. In this study we verified the high flavonoid content of the hydrodynamic-cavitation extract from Citrus reticulata peels and explore the potency of its citrus flavonoid contents as targeted chemoprevention agent for breast cancer by using bioinformatics. Based on a thin layer chromatography, the extract positively yielded high content of citrus flavonoids represented by hesperidin. The toxicity analysis by Protox II Online Tool revealed that hesperidin as the major citrus flavonoid in the extract was considered safe with a predicted LD50 of 12,000 mg/kg. We then further exploring citrus flavonoids’ capacity in targeting MAP1LC3A, a key protein in autophagy. UALCAN analysis validated that low expression of MAP1LC3A is associated with low survival rates in breast cancer patients. Limonin, hesperidin, narirutin, neohesperidine, and naringin are flavonoids from citrus peels that predicted to have inhibitory activity against Protein Kinase A (PKA), a negative upstream of MAP1LC3A, calculated by KNIME. Citrus flavonoids scoparone, cirsimaritin, 4',5,7-trimethoxyflavone, eupatorine, and hesperidin were also exhibit similar structure to an agonist of ATG4B, a protein that plays a role in MAP1LC3A activation. Furthermore, eupatorine, hesperidin, and cirsimaritin displayed a high affinity to ATG4B based on a molecular docking. We concluded that citrus flavonoids from citrus peels are safe to normal cells, and the citrus flavonoids potentially targets MAP1LC3A by inhibiting PKA and acting as ATG4B agonists. Thus, this extract-contained flavonoids from citrus peels is potential to be investigated further as a chemoprevention agent by inducing autophagy, especially for breast cancer.Keywords: Citrus reticulata, citrus flavonoid, autophagy, MAP1LC3A, breast cancer.
Bioinformatics Analysis of Rho GTP-ase Activating Protein 35 (ARHGAP35) in Breast Cancer Migration
Authors: Febrian Dicky Rizky , Setyono Joko , Fareza Muhamad Salman , Choironi Nur Amalia , Fadlan Arif , Sarmoko Sarmoko
Published: March 2022

Breast cancer is a second deadly cancer after lung cancer worldwide. Progression of cancer is driven by mutated cancer drive gene such as ARHGAP35. This study aims to analyze the role of ARHGAP35 in the growth and development of breast cancer cells. ARHGAP35 expression level was analyzed using Oncomine (p-value<1E-4; gene rank top 10%). Overall survival (OS) and disease-free survival (DFS) were evaluated by using GEPIA (median cutoff; HR displayed with 95% CI). STRING was used for analyzing the protein-protein interaction network, while WEBGESTALT for KEGG pathway and gene ontology (GO) of ARHGAP35 and associated proteins and cBioPortal for gene mutation. ARHGAP35 was overexpressed in several types of breast cancer, namely invasive ductal breast carcinoma (IDC), invasive ductal and lobular breast carcinoma (IDLC), invasive lobular breast carcinoma (ILC), male breast carcinoma, and mixed ductal and lobular carcinoma (MDLC). High expression of ARHGAP35 had significantly lower OS (p=0.045) compared to low expression of ARHGAP35 and the difference in DFS was not significant (p=0.98). ARHGAP35 interacted with RHOA, RHOB, RHOC, RHOD, RASA1, RND1, RAC1, CDC42, FYN and SRC. KEGG pathway and GO analysis showed that these proteins are highly involved in actin-based processes through adherent junction, axon guidance, focal adhesion, regulation of actin cytoskeleton, and tight junction. Mutation rate analysis showed 34 missense, 29 truncating, 3 fusion, and 1 in frame on ARHGAP35. Taken together, ARHGAP35 may involve in the growth and development of breast cancer through regulation of actin cytoskeleton pathway.Keywords: ARHGAP35, breast cancer, KEGG pathway, mutation rate, actin cytoskeleton.
Metropolen im Wandel
Authors: Bröcker Katharina
Published: March 2022

Brennende Autos und eingeworfene Scheiben von Luxusimmobilien in Berlin, Demonstrationen und Hausbesetzungen in Paris: Die zunehmende sozialräumliche Spaltung der Bevölkerung entlädt sich immer häufiger in Protestaktionen. Der Begriff Gentrification hat dabei Eingang in gesellschaftliche Debatten gefunden und ist mittlerweile als »Reizthema« in den Fokus von Politik und Medien gerückt. Katharina Bröcker liefert einen wichtigen Beitrag zur deutsch-französischen Gentrificationforschung, indem sie die aktuell in Deutschland und Frankreich beobachtbaren Gentrificationprozesse am Beispiel des Bezirks Berlin-Prenzlauer Berg und den Pariser Vierteln Faubourg Saint-Antoine und Faubourg du Temple einander gegenüberstellt. Wie unterscheiden sich die spezifischen Ausprägungen der Gentrification in Form und Verlauf? Wie werden die Prozesse von der jeweiligen Gesellschaft wahrgenommen und welche politischen Maßnahmen zur Steuerung sind bekannt?
STUDI ATAS PERSEPSI MASYARAKAT KOTA SEMARANG TERHADAP PEMBEBANAN SANKSI DENDA DALAM PROGRAM VAKSINASI COVID-19
Authors: Widodo Wahyu , Budoyo Sapto , Pratama Toebagus Galang Windi
Published: March 2022

Dalam rangka mengurangi jumlah pasien Positif Covid-19, Pemerintah sebagaimana termaktub dalam Pasal 13a ayat (4) Perpres 14 tahun 2021 memberlakukan sanksi denda. Pengenaan denda ini tentu menimbulkan pro dan kontra sehingga hal ini menarik untuk dibahas dalam kajian yuridis empiris yang dilaksanakan di Kota Semarang. Hasil penelitian menunjukkan bahwa Perpres ini melanggar hak asasi manusia terlebih definisi dari keadaan darurat kesehatan masyarakat itu sendiri yang perlu dikaji ulang karena definisinya belum ada standar apa yang dapat dikategorikan sebagai darurat kesehatan masyarakat dan penegakannya akan sulit karena berdasarkan penelitian penulis, sebanyak 55% responden di kota Semarang menolak gagasan sanksi denda, sehingga perlu dipertimbangkan cara alternatif seperti di Australia dimana pemerintah memberikan insentif untuk membujuk masyarakat untuk mau mengikuti program vaksin.
Digitales Shopfloor Management
Authors: Meister Frederic , Hohmann Andrea , Daub Rüdiger
Published: March 2022

Datenanalysen des Produktionsablaufs nehmen für die Verbesserung der Produktion einen immer höheren Stellenwert ein. Process Mining birgt hierbei Potenzial, größere Datenmengen automatisiert auszuwerten und Prozesslandkarten zu erstellen. Im Shopfloor Management fehlt es an einem strukturierten Ansatz, um Process Mining zu etablieren. Auf Basis von Case-based Reasoning zeigt der Beitrag, wie Process Mining Problemlösungsprozesse unterstützen und die Maßnahmenintegration und -verfolgung verbessern kann.
Dekarbonisierung der Produktion
Authors: Roth Stefan , Sultani Darius , Artmann Isabel , Klement Timo , Angerer Kerstin , Bank Lukas
Published: March 2022

Die Dekarbonisierung der Produktion gewinnt durch die klimapolitischen Ziele zunehmend an Bedeutung. Dies spiegelt sich auch in möglichen Kosteneinsparpotenzialen für die Unternehmen wider, beispielsweise im Rahmen des Emissionshandels der Europäischen Union, aber auch durch die Erwartungen von Endkunden und Unternehmen entlang der Lieferkette an möglichst geringe Treibhausgasemissionen der Produkte. Lösungen zur Dekarbonisierung müssen sowohl für die elektrische als auch thermische Energieversorgung entwickelt werden und kosteneffizient sein. Der Beitrag beschreibt hierzu die Ansätze einer nachhaltigen Produktionsplanung mit der Berücksichtigung von Treibhausgasemissionen sowie die Entwicklung und Untersuchung nachhaltiger Brennstoffversorgungsszenarien durch die Erzeugung und Nutzung von Wasserstoff und seiner Folgeprodukte.
Data Farming und Wissensentdeckung in Simulationsdaten
Authors: Genath Jonas , Bergmann Sören , Straßburger Steffen , Spieckermann Sven , Stauber Stephan
Published: March 2022

Simulation als Methode der Digitalen Fabrik hat sich seit langem zur Unterstützung der Planung von Produktions- und Logistiksystemen etabliert. In Ergänzung zu bisher vorherrschenden Simulationsstudien wird bei der hier vorgestellten Methode der Wissensentdeckung in Simulationsdaten ein Simulationsmodell als Datengenerator verwendet. Dadurch können mittels Data-Mining- und Visual-Analytics-Methoden versteckte und potenziell nützliche Ursache-Wirkungs-Beziehungen in den generierten Daten aufgedeckt werden. Bislang fehlte es jedoch an integrierten Softwarelösungen für die Praxis.
Influence of Stress Gradient, Specimen Type, and Surface Roughness on Fatigue Behavior of Additively Manufactured 17-4 PH Stainless Steel
Authors: Shrestha Rakish , Nezhadfar P. D. , Simsiriwong Jutima , Shamsaei Nima
Published: March 2022

The effects of stress gradient resulting from a different type of loading condition (i.e., rotating-bending [R-B] versus axial), specimen (i.e., hourglass for R-B versus round with straight gage section for axial), and surface roughness on the fatigue behavior of 17-4 precipitation hardening stainless steel fabricated using the laser beam powder bed fusion process are investigated. Fatigue experiments are conducted on specimens with as-built and machined/polished surface conditions. For the as-built surface condition, the fatigue resistance of laser beam powder bed fusion 17-4 precipitation hardening stainless steel specimens under R-B and axial loadings are found to be comparable at all stress levels, and fatigue cracks are all observed to initiate from the micronotches at the surface. Similarly, cracks in the R-B and axial specimens in a machined/polished surface condition are also observed to initiate from the volumetric defects. However, the defect size in the R-B specimens is consistently smaller and, consequently, results in better fatigue resistance as compared to the axial specimens. Hence, special care needs to be taken during the specimen design to ensure that there is enough volume of material at the gage section to correctly capture the porosity level within the material.
Do the Poor Benefit from the Right to Information Act?
Authors: Dutta Sujoy
Published: March 2022

I investigate to what extent India’s Right to Information Act is useful for poor households. Drawing on empirical data from central Uttar Pradesh, I study two categories of poor households—urban and rural—possessing Below Poverty Line cards. These cards entitle their holders to several subsidies, but they are poorly targeted: certain communities receive more cards, while most of the deserving poor do not receive them. The Act is meant to create space for democratization, enabling the poor to challenge local power holders; but there are obstacles to their taking advantage of it. They are scarcely educated, and unaware of the Act, and they get no support from government agencies responsible for implementing it. This has encouraged the use of manipulative tactics by local representatives and government bureaucrats seeking power, control, and domination. But the poor do find ways to receive their entitlements.
Syntactic Representations Contain Semantic Information: Evidence From Balinese Passives
Authors: Darmasetiyawan I Made Sena , Ambridge Ben
Published: March 2022

Semantics-based approaches to syntax hold that the basic units of language are constructions: form-meaning pairings that have meanings in and of themselves. The aim of the present study was to test this claim using a previously-unstudied construction: Balinese passives. Using a grammatical acceptability judgment methodology with 60 native adult speakers, we found that independent ratings of 49 verbs’ semantic affectedness (obtained from a separate group of 20 native adult speakers) significantly predict the relative acceptability of these verbs in three types of passives (-a, ka- and ma- passives), and also actives, but not in what we term the “basic passive”; a construction which lacks the morphological markers that characterize the other passive types. These findings constitute support for semantics-based approaches to syntax, but are more difficult to reconcile with approaches that posit a pure-syntax level of representation that includes syntactic category information but not semantic information or lexical content.
Effect of LiSbO3 on dielectric and piezoelectric properties of KNN ceramics
Authors:   Marine Engineering Department, Tianjin Maritime College, Tianjin 300350, China, Wang R. R. , Li Y. L. ,   College of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, China, Tian Y. ,   College of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, China, Li Z. Q. ,   Chemical College, Shijiazhuang University, Shijiazhuang 050035, China
Published: March 2022

K2CO3, Na2CO3, Li2CO3, Sb2O3 and Nb2O5 were used as the starting materials, the (K0.5Na0.5)NbO3-x mol% LiSbO3 (x=0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) ceramics are prepared using solid state synthesis method, and the effects of LiSbO3 content on dielectric and piezoelectric properties of (K0.5Na0.5)NbO3 ceramics are investigated. The results show that the crystal structure for (Na0.5K0.5)NbO3 ceramics with different LiSbO3 content is all perovskite structure, and the new phase structure of KNN ceramics can’t be obtained when the LiSbO3 content is 0.00≤ x ≤0.05. The appropriate amount of LiSbO3 doped KNN ceramics can refine the grain size and increase the density of the ceramics. When x = 0.04, the relative dielectric constant reaches 980, the dielectric loss is 0.055, and the combined effect of Li+ and Sb 5+ makes the KNN ceramics have better dielectric properties. Due to the more easily the domain wall rotates at the grain boundary, the (K0.5Na0.5)NbO3 ceramics doped with 4 mol% LiSbO3 shows excellent piezoelectric properties in the system of study, and the piezoelectric constant d33 increases sharply to the maximum value of 126 pC/N.
PEI-coated Fe3O4 magnetic nanoparticles for fast and segregative removal of uric acid from plasma
Authors:   School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, 643000, P. R. China, Pan Y. Z. , Wang W. H. ,   School of Kinesiology, Shanghai University of Sport, Shanghai, 200438, P. R. China, Huang Y. ,   College of Lab Medicine, Hebei North University, Key Laboratory of Biomedical Materials of Zhangjiakou, Zhangjiakou, Hebei, 075000, P. R. China, Yi C. X. ,   School of Sports and Health Science, Tongren University, Tongren, Guizhou, 554300, P. R. China, Huang X. ,   School of Sports and Health Science, Tongren University, Tongren, Guizhou, 554300, P. R. China
Published: March 2022

Excess uric acid in blood would cause serious health consequences. Extracorporeal blood purification using solid phase adsorbents is considered as the most promising technique for uric acid removal for patients with nephropathy. In this work, PEI-coated Fe3O4 NPs have been synthesized to be a fast and segregative remover of uric acid. They present a fast and efficient adsorption behavior. Meanwhile, PEI-coated Fe3O4 NPs are magnetic separable and biocompatible. Therefore, PEI-coated Fe3O4 NPs hold a great potential in uric acid removal both in vitro and in vivo.
Eco-valorification of marine shells by hydrothermal conversion in alkaline media
Authors:   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Bucur A. , Banica R. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Pascariu M. C. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Poienar M. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Mosoarca C. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Bucur R. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Negrea A. ,   Renewable Energy and Electrochemistry Department, National Institute of R&D for Electrochemistry and Condensed Matter - INCEMC, 144 Aurel PăunescuPodeanu, RO-300569, Timișoara, Romania, Hulka I. ,   Research Institute for Renewable Energy - ICER Politehnica University of Timisoara 138 Gavril Musicescu, RO-307221, Timișoara, Romania
Published: March 2022

Marine shells are a natural, cheap, abundant and renewable resource, which can be used to produce useful materials, such as for the construction industry. The present study focuses on the transformation of Mya arenaria exoskeletons from the Black Sea into calcium hydroxide by using low-temperature hydrothermal synthesis. In contrast with other methods, this energy-saving process does not involve calcination of shells prior to the hydrothermal treatment. XRD results show the formation of calcium hydroxide with preferential orientation and interesting atypical morphology, which is strongly influenced by the composition of the reaction medium.
Acbp is essential for decidualization during early pregnancy in mice
Authors: Zhang Xue , Tan Bo-Yin , Zhang Shuang , Feng Qian , Bai Ying , Xiao Shi-Quan , Chen Xue-Mei , He Jun-Lin , Liu Xue-Qing , Wang Ying-Xiong , Ding Yu-Bin , Li Fang-Fang
Published: March 2022

Decidualization of uterine stromal cells plays an important role in the establishment of normal pregnancy. Previous studies have demonstrated that Acyl-CoA binding protein (Acbp) is critical to cellular proliferation, differentiation, mitochondrial functions, and autophagy. The characterization and physiological function of Acbp during decidualization remain largely unknown. In the present study, we conducted the expression profile of Acbp in the endometrium of early pregnant mice. With the occurrence of decidualization, the expression of Acbp gradually increased. Similarly, Acbp expression was also strongly expressed in decidualized cells following artificial decidualization, both in vivo and in vitro. We applied the mice pseudopregnancy model to reveal that the expression of Acbp in the endometrium of early pregnant mice was not induced by embryonic signaling. Moreover, P4 significantly upregulated the expression of Acbp, whereas E2 appeared to have no regulating effect on Acbp expression in uterine stromal cells. Concurrently, we found that interfering with Acbp attenuated decidualization, and that might due to mitochondrial dysfunctions and the inhibition of fatty acid oxidation. The level of autophagy was increased after knocking down Acbp. During induced decidualization, the expression of ACBP was decreased with the treatment of rapamycin (an autophagy inducer), while increased with the addition of Chloroquine (an autophagy inhibitor). Our work suggests that Acbp plays an essential role in the proliferation and differentiation of stromal cells during decidualization through regulating mitochondrial functions, fatty acid oxidation, and autophagy.
Fatiga local y general: efectos sobre la propiocepción de rodilla en futbolistas
Authors: Carrasco L. , Espinar J. , Carbonell F.J. , Martínez-Díaz I.C.
Published: March 2022

El objetivo del presente estudio fue contrastar los efectos de dos tipos de fatiga, local y general, sobre la propiocepción de la rodilla. 22 jugadores semi-profesionales de fútbol, fueron evaluados en un dinamómetro isocinético antes y después de realizar esfuerzos que indujeron fatiga muscular local así como fatiga general. Dicha evaluación se basó en la prueba de reposicionamiento angular activo de la rodilla, registrando las desviaciones absolutas y relativas respecto al ángulo diana (30º de flexión). La inducción de ambos tipos de fatiga consiguió alterar de forma significativa la capacidad propioceptiva de los sujetos tras valorar únicamente el error absoluto, si bien no se observaron diferencias significativas en su contraste. En conclusión, e independientemente de su tipología, la fatiga inducida a estos futbolistas parece influir sobre la propiocepción de sus rodillas, aunque este efecto está condicionado por el tipo de error angular que se considere.
Análisis de la escala de resiliencia en corredores por montaña
Authors: González-Lázaro J. , Frutos de Miguel J. , Arribas Cubero H.F. , Rodríguez-Marroyo J.A.
Published: March 2022

Los objetivos del presente estudio fueron analizar la estructura factorial de la escala de resiliencia de Wagnild y Young (1993) y describir los niveles de resiliencia en una muestra española de corredores por montaña. Para ello, se usó una muestra formada por 400 deportistas con edades comprendidas entre los 20 y los 60 años (M = 38.70). Se llevó a cabo una validación cruzada creándose dos submuestras de 200 participantes cada una. Según los datos aportados por la primera submuestra tras en el análisis factorial exploratorio (AFE), se estimaron cuatro modelos mediante análisis factorial confirmatorio (AFC), además se calculó el índice de fiabilidad mediante el alfa de Cronbach (? = .90) y se comprobó si existían diferencias significativas entre hombres y mujeres. Los resultados señalaron que un 39% de los corredores por montaña presentaban una alta resiliencia, siendo el modelo de tres factores específicos aquel que presentó mejor ajuste.
Kinésica deportiva
Authors: García-Marcos F. , García-Mateo P.
Published: March 2022

El artículo explora la posibilidad de integrar parte de la actividad deportiva dentro del marco de preocupaciones semióticas adscritas a la kinésica, una de sus grandes señas de identidad temática. En primer lugar, se realiza una aproximación teórica, para a continuación proponer una taxonomía de esta, basada en la casuística que genera la propia dinámica deportiva. Al final del trabajo, se confirma la hipótesis teórico-metodológica de la que se había partido, lo que supone abrir un camino para futuras investigaciones en semiótica deportiva.
VFB Maintenance Methods: Technical and Economic Issues
Authors: Poli Nicola , Marini Giacomo , Trovò Andrea
Published: March 2022

The VFB system has been extensively studied for almost 30 years. Several plants are installed around the world, with power and energy exceeding some MW and some MWh respectively and new companies are entering the growing market. However, a real widespread application of this technology is hindered by its high capital cost. One method to make these batteries more competitive on the market is to increase their cyclability by means of appropriate maintenance procedures. Some procedures are focused on physical treatments such as the remixing of the positive electrolyte with the negative one, which causes heat generation. Other methods are focused on chemical and electrochemical regeneration procedures which make use of chemical reducing agents, catalysts or electrochemical processes. The latter requires the use of an electrolysis system in order to restore the vanadium oxidation state to the correct ratio in the positive and negative electrolyte. In the first part of this work, an extensive description of VFB technology is presented while in the second part a description of the most important and realizable maintenance procedures with their impact on the system cost is shown, considering both operative and economical points of view.
Vertical Tillage Technology for Primary Soil Preparation
Authors: Reynolds Chávez M. A. , Burela A. Capetillo , Zapata M. Cadena , López J. A. López , Lezama R. Zetina
Published: March 2022

In the last decade in Mexico and other developing countries, soil preparation is the agricultural activity that represents the highest costs per unit of production, due to factors such as lack of appropriate equipment, excessive tillage, high consumption of fossil fuel, lack of knowledge and training for the adequate soil management, among others.
The purpose of this research was to develop a vertical tillage technology that allows primary soil preparation without investment and reduces fuel consumption and effective operating time, improves labor quality and conserves soil and water resources. For this, a chisel plow prototype was developed based on four vertical tillage parameters: (1. Working depth 2. Number of bodies 3. Spacing between chisels 4. Use of wings or sweepers). These parameters determined the criteria and dimensions of the prototype for its development in design parameters such as spacing, position, angle of attack and depth of work.
The performance evaluation of the prototype was compared with the disc plow; an implement that served as a witness as it was the most widely used technology. The standardized test method was used by the National Center for Standardization of Agricultural Machinery "CENEMA". The results obtained show a prototype plow with five chisels mounted on a double platform frame. The front platform is used for the coupling of three shallow chisels and the rear one, for the coupling of two deep chisels with wings. The implement adjusts for two working depths 0.30 and 0.40 meters and two working widths 1.80 m and 2.40 m respectively. The performance evaluation showed that vertical tillage with the chisel plow prototype in its two treatments showed an average saving of more than 45% in the fuel consumption variable and 53% in the effective working time compared to conventional tillage used with a disc plow. In terms of quality of work, vertical tillage shows high performance in soil disturbance, exceeding up to 65% of the work done by conventional tillage. Finally, it is concluded that the proposed technology should be used as technological innovation and replace the conventional disk plow technology, given its technological, economic and environmental advantages.
THE TAREKAT SAMMANIYAH IN THE SULTANATE OF BUTON, A STUDY OF THE SULTANATE MANUSCRIPT
Authors: Sabirin Falah
Published: March 2022

AbstractThis article discusses the genealogy of sanad and the Tarekat Sammaniyah teaching style in the Sultanate of Buton. This study found that in the Buton sultanate, there was a side of the Tarekat Sammaniyah which had several features and shortcomings. First, Muhammad ‘Aydru, a sultan who studied the the Tarekat Sammaniyah from a Mekkah scholar. Second, the spread of the Tarekat Sammaniyah only developed among the nobles in the Buton Sultanate. The teaching style of the Tarekat Sammaniyah is not much different from the primary source text, specifically, al-Nafahat al-Ilahiyah by Muhammad bin 'Abd al-Karim al-Samman. This shows a strong indication of the interaction between 'Aydrus and local Sammaniyah role models through the lineage of 'Abd al-Samad. However, there are several traditions of remembrance that are slightly different from the Sammaniyah taught by 'Abd al-Samad. This can be seen when 'Aydrus puts recitation of tahlil at an advanced level, while 'Abd al-Samad makes remembrance at the beginner level. However, there was no difference at all in the procedures for remembrance of the adab.AbstrakArtikel ini membahas tentang sisilah sanad dan corak ajaran Tarekat Sammaniyah di Kesultanan Buton. Dalam penelitian ini ditemukan bahwa di kesultanan Buton terdapat sisilah Tarekat Sammaniyah memiliki beberapa keistimewaan juga menjadi kekurangan. Pertama, Muhammad ‘Aydrus yang seorang sultan mempelajari Tarekat Sammaniyah kepada seorang ulama Makkah. Kedua, penyebaran tarekat Sammaniyah hanya berkembang di kalangan bangsawan yang berada di Kesultanan Buton. Adapun corak ajaran Tarekat Sammaniyah tidak jauh berbeda dengan teks sumber utamanya, yaitu al-Nafahat al-Ilahiyah karya Muhammad bin ‘Abd al-Karim al-Samman. Hal ini menunjukkan adanya indikasi kuat interaksi antara ‘Aydrus dengan tokoh-tokoh Sammaniyah lokal melalui jalur silsilah ‘Abd al-Samad. Namun ada beberapa tradisi zikir yang sedikit berbeda dengan Sammaniyah yang diajarkan ‘Abd al-Samad. Ini terlihat saat ‘Aydrus menempatkan zikir tahlil pada tingkatan lanjutan, sedangkan ‘Abd al-Samad menjadikan zikir pada tingkatan pemula. Namun pada akhirnya tidak ada perbedaan sama sekali pada tatacara berzikir padab-adab.
KYAI ZAINUDDIN AMIR’S DA’WAH STRATEGY IN SPREADING ISLAMIC VALUES IN BADUY TRIBE COMMUNITY
Authors: Darajat Deden Mauli , Rahmi Cinta
Published: March 2022

Abstract. This article discusses to answer the question how is the strategy of Kyai Zainuddin Amir's da'wah in spreading Islamic values in the Baduy Tribe community? The Baduy tribe is an inland tribe located in Leuwidamar District, Lebak Regency, Banten Province, Republic of Indonesia. The Baduy tribe is divided into two, namely the Inner Baduy and the Outer Baduy. The results of this study indicate that Kyai Zainuddin Amir's missionary strategy is to use two approaches, the first is fardiyah propaganda or an interpersonal communication approach and the second is to establish the Sultan Hasanuddin Al-Jawi Modern Islamic Boarding School which is located around the Baduy community area in Lebak Regency, Banten Province. The Sultan Hasanuddin Al-Jawi Islamic Boarding School which he founded was part of Kyai Zainuddin Amir's da'wah strategy in spreading Islamic values to the Baduy tribe. A number of Baduy people choose Islam as their religion. Their Islamic procession was guided by Kyai Zainuddin Amir at his pesantren. The research methodology used in this study is a qualitative research methodology with a descriptive analysis approach. To obtain the validity of the data, the researcher will conduct in-depth interviews with sources relevant to the substance of the research problem. All data obtained in the form of documents, interviews, and observations were analyzed with a constructivist perspective.Keywords: strategy; da'wah; Kyai Zainuddin Amir; baduy tribeAbstrak. Artikel ini membahas menjawab pertanyaan bagaimana strategi dakwah Kyai Zainuddin Amir dalam menyebarkan nilai-nilai Islam pada masyarakat Suku Baduy? Suku Baduy adalah suku pedalaman yang terletak di Kecamatan Leuwidamar, Kabupaten Lebak, Provinsi Banten, Republik Indonesia. Suku Baduy terbagi menjadi dua, yaitu Baduy Dalam dan Baduy Luar. Hasil penelitian ini menunjukkan bahwa strategi dakwah Kyai Zainuddin Amir menggunakan dua pendekatan, yang pertama adalah dakwah fardiyah atau pendekatan komunikasi interpersonal dan yang kedua adalah mendirikan Pondok Pesantren Modern Sultan Hasanuddin Al-Jawi yang berlokasi di sekitar Baduy. masyarakat di Kabupaten Lebak, Provinsi Banten. Pesantren Sultan Hasanuddin Al-Jawi yang didirikannya merupakan bagian dari strategi dakwah Kyai Zainuddin Amir dalam menyebarkan nilai-nilai Islam kepada suku Baduy. Sejumlah orang Baduy memilih Islam sebagai agama mereka. Prosesi keislaman mereka dipandu oleh Kyai Zainuddin Amir di pesantrennya. Metodologi penelitian yang digunakan dalam penelitian ini adalah metodologi penelitian kualitatif dengan pendekatan deskriptif analisis. Untuk memperoleh keabsahan data, peneliti akan melakukan wawancara mendalam dengan narasumber yang relevan dengan substansi masalah penelitian. Semua data yang diperoleh berupa dokumen, wawancara, dan observasi dianalisis dengan perspektif konstruktivis.Kata Kunci: strategi; dakwah; Kyai Zainuddin Amir; suku baduy
Counting the Parts to Understand the Whole: Rethinking Monitoring of Steelhead in California’s Central Valley
Authors:   FISHBIO, Eschenroeder Jackman , Peterson Matthew ,   FISHBIO, Hellmair Michael ,   FISHBIO, Pilger Tyler ,   FISHBIO, Demko Doug ,   FISHBIO, Fuller Andrea ,   FISHBIO
Published: March 2022

Steelhead (Oncorhynchus mykiss expressing an anadromous life history) in the Sacramento and San Joaquin rivers and their tributaries in California’s Central Valley (CCV) belong to a Distinct Population Segment (DPS) that is listed as threatened under the US Endangered Species Act. Although contemporary management and recovery plans include numerous planned and ongoing efforts seeking to aid in DPS recovery—such as gravel augmentation, manipulation of spring flows, and restoration of rearing and spawning habitat—a paucity of data precludes the possibility of evaluating the effect of these actions on populations of Steelhead in CCV streams. Knowledge gaps relating to historic and current abundance, population-specific ratios of resident and anadromous life-history expression, and the influence of hatchery-reared fish remain largely unaddressed. This is partly a result of aspects of Steelhead biology that make them difficult to monitor, including the multitude of factors that contribute to the expression of anadromy, polymorphic populations, and migration periods that coincide with challenging field conditions. However, these gaps in understanding are also partly the result of an institutional focus on Chinook Salmon (Oncorhynchus tshawytscha) and a pervasive notion that actions benefiting Chinook populations will also benefit Steelhead populations. To evaluate these gaps and to suggest approaches for assessing DPS recovery actions, we review available data and existing monitoring efforts, and consider the actions necessary to inform the development of targeted O. mykiss monitoring programs. Current management and recovery goals focus on abundance estimates of Steelhead only, yet current monitoring is insufficient for reliable estimates. We argue that a reallocation of monitoring resources to better understand the interaction between resident O. mykiss and Steelhead would provide better data to estimate the vital rates needed to evaluate the effects of recovery actions.