bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multi-Feedstocks Biodiesel Production from Esterification of Calophyllum inophyllum Oil, Castor Oil, Palm Oil and Waste Cooking Oil
Authors: Hadiyanto H , Aini Apsari Puspita , Widayat Widayat , Kusmiyati Kusmiyati , Budiman Arief , Roesyadi Achmad 
Published: February 2020

Biodiesel can be produced from various vegetable oils and animal fat. Abundant sources of vegetable oil in Indonesia, such as Calophyllum inophyllum, Ricinus communis, palm oil, and waste cooking oil, were used as raw materials. Multi-feedstock biodiesel was used to increase the flexibility operation of biodiesel production. This study was conducted to determine the effect of a combination of vegetable oils on biodiesel characteristics. Degumming and two steps of esterification were applied for high free fatty acid feedstock before trans-esterification in combination with other vegetable oils. Potassium hydroxide was used as a homogenous catalyst and methanol as another raw material. The acid value of C. inophyllum decreased from 54 mg KOH/gr oil to 2.15 mg KOH/gr oil after two steps of esterification. Biodiesel yield from multi-feedstock was 87.926% with a methanol-to-oil molar ratio of 6:1, temperature of 60 ℃, and catalyst of 1%wt. ©2020. CBIORE-IJRED. All rights reserved
The influence of microbial community dynamics on anaerobic digestion efficiency and stability: A Review
Authors: Amekan Yumechris 
Published: February 2020

An essential component in sustainable energy development is the production of bioenergy from waste. The most successful bioenergy technology worldwide is anaerobic digestion (AD), which is a microbially-mediated process of organic feedstock conversion into energy-rich compounds (volatile fatty acids (VFA) and biogas) for renewable energy generation. AD is deployed in a range of situations including systems for on-farm energy recovery from animal and plant waste to the processing of food and municipal solid waste (with the additional benefit of land-fill reduction).Anaerobic digesters rely on a diverse microbial community working syntrophycally through a series of interrelated biochemical processes.Each stage in anaerobic digestion is carried out by different microbial groups. Thus, to optimise energy recovery from the AD process, the microbial community must have stable performance over time, balancing the various metabolic functions and taxonomic community composition in digesters. Complicating this balance, it has been found that the presence of ammonia, sulphate, and hydrogen sulphide in substantial concentrations often cause failure in the AD process. Thus, these substances cause adverse shifts in microbial community composition and/or inhibit bacterial growth, that influencing AD performance. ©2020. CBIORE-IJRED. All rights reserved
Enhanced specificity due to method specific limits for relative ion intensities in a high-performance liquid chromatography – tandem mass spectrometry method for iohexol in human serum
Authors: Schweinsberg Vincent , Eckelt Stefan , Schulz Anna Marta , Arlt Marcel , Schumann Marc , van der Giet Markus , Tauber Rudolf , Binscheck-Domaß Torsten , Kießling Peggy 
Published: February 2020

Abstract

Background
Accurate assessment of kidney function is needed for a variety of clinical indications and for research. The measurement of the serum clearance of iohexol has emerged as a feasible method to reach this objective. We report the analytical validation and clinical application of a new high-performance liquid chromatography (HPLC) – tandem mass spectrometry (MS/MS) assay to quantify iohexol in human serum. Specificity was enhanced due to the use of method specific acceptance limits for relative ion (RI) intensities.

Methods
The internal standard ioversol was added to 50 μL serum prior to protein precipitation with methanol. Linear gradient elution was performed on a Waters Oasis® HLB column. Three transitions for both iohexol and ioversol were monitored allowing calculation of RIs. Measurements acquired during method validation were used as a training set to establish stricter acceptance criteria for RIs which were then tested retrospectively on clinical routine measurements (86 measurements) and on mathematically simulated interferences.

Results
The method was linear between 5.0 μg/mL (lower limit of quantification [LLOQ]) and 100.3 μg/mL iohexol. Intraday and interday imprecision were ≤2.6% and ≤3.2%, respectively. Bias was −1.6% to 1.5%. All validation criteria were met, including selectivity, recovery, extraction efficiency and matrix effects. Retrospectively acceptance limits for RIs could be narrowed to ±4 relative standard deviations of the corresponding RIs in the training set. The new limits resulted in an enhanced sensitivity for the simulated interferences.

Conclusions
Criteria for validation were met and the assay is now used in our clinical routine diagnostics and in research.
Long-term biological variation estimates of 13 hematological parameters in healthy Chinese subjects
Authors: Li Chenbin , Peng Mingting , Wu Ji , Du Zhongli , Lu Hong , Zhou Wenbin 
Published: February 2020

Abstract

Background
The complete blood count (CBC) is a basic test routinely ordered by physicians as a part of initial diagnostic work-up on their patients. To ensure safe clinical application of the CBC, reliable biological variation (BV) data are needed to establish analytical performance specifications. Our aim was to define the BV of CBC parameters using a rigorous protocol that is compliant with the Biological Variation Data Critical Appraisal Checklist (BIVAC) provided by the European Federation of Clinical Chemistry and Laboratory Medicine.

Methods
Blood samples drawn from 41 healthy Chinese subjects (22 females and 19 males; 23–59 years of age) once monthly for 6 consecutive months were analyzed using an ABX Pentra 80 instrument. The instrument was precisely calibrated. All samples were analyzed in duplicate for 13 CBC parameters. The data were assessed for outliers, normality, and variance homogeneity prior to nested ANOVA. Gender-stratified within-subject (CVI) and between-subject (CVG) BV estimates were calculated.

Results
The number of remaining data for each subject was 442–484 after removing outliers. No significant differences existed between female/male CVI estimates. Except for leukocytes, neutrophils, and lymphocytes, the mean values of 10 parameters differed significantly between genders, rendering partitioning of CVG data between genders. No significant differences were detected between most BV estimates and recently published estimates representing a Europid population.

Conclusions
Most BV estimates in BIVAC-compliant studies are similar. The turnover time of blood cells and age distribution of participants should be considered in a CBC BV study. Our study will contribute to global BV estimates and future studies.
A polynomial bound for the number of maximal systems of imprimitivity of a finite transitive permutation group
Authors: Lucchini Andrea , Moscatiello Mariapia , Spiga Pablo 
Published: February 2020

Abstract
We show that there exists a constant a such that, for every subgroup H of a finite group G, the number of maximal subgroups of G containing H is bounded above by

a

|
G
:
H
|

3
/
2

{a\lvert G:H\rvert^{3/2}}

. In particular, a transitive permutation group of degree n has at most

a
⁢

n

3
/
2

{an^{3/2}}

maximal systems of imprimitivity. When G is soluble, generalizing a classic result of Tim Wall, we prove a much stronger bound, that is,
the number of maximal subgroups of G containing H is at most

|
G
:
H
|

-
1

{\lvert G:H\rvert-1}

.
Partial trisomy 9p and 14q microduplication in a patient with growth retardation: a case report and review of the literature
Authors: Fan Jing , Zhou Jing , Lin Diaozhu , Guo Ying , Li Shaohua , Zhang Shaoling , Liang Liyang , Yan Li 
Published: February 2020

Abstract

Background
Trisomy is a common chromosomal aberration, which usually presents with similar phenotypic abnormalities and developmental delay. Although defined as chromosome abnormalities with recognized symptoms including growth retardation, trisomy 9p and trisomy 14q have been rarely reported to occur at the same time.

Case presentation
Here, we describe a 16-year-old adolescent female affected by developmental delay and mild intellectual disability. She was confirmed to have both partial trisomy 9p (p24.3-p23) and 14q11.2 microduplication by chromosome microarray analysis (CMA). It is speculated that the extra chromosome in the patient may be a derivative 14 chromosome inherited from the parent after 3:1 disjunction during meiosis. The extra 9p segment proves to be pathogenic while the duplicated 14q11.2 remains indefinite.

Conclusions
Further studies are needed to assign the genes responsible for the developmental delay and craniofacial dysmorphisms and appoint dosage-sensitive genes of chromosome 9p.
Elevated serum uric acid, hyperuricaemia and dietary patterns among adolescents in mainland China
Authors: Zhou Hang , Ma Zheng Feei , Lu Yiming , Du Yanyan , Shao Jian , Wang Liya , Wu Qin , Pan Binyu , Zhu Wenxi , Zhao Qihua , Wei Hua 
Published: February 2020

AbstractBackgroundElevated serum uric acid concentrations have been associated with metabolic syndrome. However, only limited information is available on the prevalence of hyperuricaemia in adolescents. Therefore, the aim of our cross-sectional study was to study the prevalence of hyperuricaemia and dietary patterns in adolescents aged 13–16 years living in Yangzhou, China.MethodsAdolescents were asked to complete a 20-item food frequency questionnaire (FFQ) and provide an overnight fasting finger-prick sample. Principal component analysis (PCA) with varimax rotation was used to derive the dietary patterns that might be associated with high uric acid concentrations.ResultsA total of 1070 adolescents were recruited. Of these, 53.6% (n = 574) were females, and 58.5% (n = 625) were within the normal body mass index (BMI) range. The males had a significantly higher serving size and frequency in their weekly food consumption, including meat, poultry, Chinese cereal staple foods and Western-style fast foods, than the females (all p < 0.02). The overall mean serum uric acid concentration and prevalence of hyperuricaemia were 368.6 ± 114.5 μmol/L and 37.9%, respectively. The prevalence of hyperuricaemia was 4.633 times greater among the participants who were overweight and obese than among those who were underweight. On the other hand, the prevalence of hyperuricaemia was 0.694 times lower among the participants who had normal weight than those who were underweight.ConclusionsThe prevalence of hyperuricaemia was relatively high in Chinese adolescents. The prevention of hyperuricaemia measures should be strengthened in adolescents to effectively control for obesity and gout, which tend to persist into adulthood.
Contradiction Club: Dialetheism and the Social World
Authors: Bolton Emma , Cull Matthew J. 
Published: February 2020

Abstract
Putative examples of true contradictions in the social world have been given by dialetheists such as Graham Priest, Richard Routley, and Val Plumwood. However, we feel that it has not been decisively argued that these examples are in fact true contradictions rather than merely apparent. In this paper we adopt a new strategy to show that there are some true contradictions in the social world, and hence that dialetheism is correct. The strategy involves showing that a group of sincere dialetheists can, given an appropriately formed institution, bootstrap contradictions into existence. We discuss objections and consider the implications of this finding for debates over logic.
Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics
Authors: Zhang Cheng , Yang Jin , Yang Liu Xi , Ke Jun Chen , Chen Ming Zheng , Cao Wen Kang , Chen Mao , Wu Zhan Hao , Chen Jian Feng , Cheng Qiang , Cui Tie Jun 
Published: February 2020

Abstract
Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless communications. However, achieving flexible and continuous harmonic wavefront control remains an urgent problem. To address this problem, we present Fourier operations on a time-domain digital coding metasurface and propose a principle of nonlinear scattering-pattern shift using a convolution theorem that facilitates the steering of scattering patterns of harmonics to arbitrarily predesigned directions. Introducing a time-delay gradient into a time-domain digital coding metasurface allows us to successfully deviate anomalous single-beam scattering in any direction, and thus, the corresponding formula for the calculation of the scattering angle can be derived. We expect this work to pave the way for controlling energy radiations of harmonics by combining a nonlinear convolution theorem with a time-domain digital coding metasurface, thereby achieving more efficient control of electromagnetic waves.
Characterization of mechanical properties of epoxy/nanohybrid composites by nanoindentation
Authors: Zhang Huiying , Li Xiang , Qian Wenjie , Zhu Jianguo , Chen Beibei , Yang Jin , Xia Yu 
Published: February 2020

Abstract
The carbon nanofibers and molybdenum disulfide (CNF-MoS2) nanohybrid material was fabricated and incorporated into epoxy resin to form the nanocomposite coating. Firstly, microstructure observation shows that each CNF was uniformly wrapped up with MoS2 nanosheets, and the nanohybrids were well dispersed in the coating. Then, nanoindentation experiments were carried out to explore the effect of the CNF-MoS2 nanohybrids on the mechanical properties of the epoxy resin coating. The results demonstrate that elastic modulus, hardness and creep deformation resistance of the CNF-MoS2 epoxy resin coating are greatly increased in comparison with both pure epoxy resin and MoS2 epoxy resin coatings. Finally, the underlying mechanism of high-performance tribological behavior of the nanocomposites is analyzed accordingly. It can be concluded that the wrapped structure with MoS2 sheets growing on the surface of CNF increases the contact area and reduces the friction coefficient of the composite coating, while the wear resistance of the nanocomposite coating is also greatly improved due to the superior high hardness of CNF.
Spatial Vantage Points in Norwegian Sign Language
Authors: Ferrara Lindsay , Ringsø Torill 
Published: February 2020

AbstractPrevious studies on perspective in spatial signed language descriptions suggest a basic dichotomy between either a route or a survey perspective, which entails either the signer being conceptualized as a mobile agent within a life-sized scene or the signer in a fixed position as an external observer of a scaled-down scene. We challenge this dichotomy by investigating the particular couplings of vantage point position and mobility engaged during various types of spatial language produced across eight naturalistic conversations in Norwegian Sign Language. Spatial language was annotated for the purpose of the segment, the size of the environment described, the signs produced, and the location and mobility of vantage points. Analysis revealed that survey and route perspectives, as characterized in the literature, do not adequately account for the range of vantage point combinations observed in conversations (e.g., external, but mobile, vantage points). There is also some preliminary evidence that the purpose of the spatial language and the size of the environments described may also play a role in how signers engage vantage points. Finally, the study underscores the importance of investigating spatial language within naturalistic conversational contexts.
Surface Contamination by Antineoplastic Drugs in Two Oncology Inpatient Units
Authors: Palamini Marie , Hilliquin Delphine , Delisle Jean-François , Chouinard Audrey , Bussières Jean-François 
Published: February 2020

AbstractBackgroundHazardous drugs pose risks to health care workers. To reduce the risk of occupational exposure for all workers, several protective and monitoring measures have been recommended and implemented over the past two decades. This study was undertaken to describe traces contamination with ten antineoplastic drugs in the oncology care unit of two university hospitals.MethodsIn this descriptive interrupted time series study, data was collected in two hospitals (a pediatric hospital and an adult hospital) in two consecutive years (12 December 2017 and 27 March 2018, defined as Period 1; 17 April 2019 and 12 June 2019, defined as Period 2). In both Period 1 and Period 2, 36 sites were sampled in each inpatient care unit to explore the contamination of surfaces with hazardous drugs.ResultsA total of 144 samples from the oncology care unit of the two hospitals were obtained for measurement. Overall, 40 % (58/144) of the sampling sites were positive for at least one hazardous drug. In the pediatric centre, 50 % (18/36) and 36 % (13/36) of the sites sampled in Period 1 and Period 2, respectively, were positive for at least one hazardous drug, whereas in the adult hospital, the percentage of sites that were positive for at least one hazardous drug was 19 % (7/36) in Period 1 and 56 % (20/36) in Period 2.ConclusionThe surfaces of inpatient care units sampled in this study were contaminated with antineoplastic drugs, and contamination was present throughout the care units (including structures, furniture, medical equipment, and office equipment). Hospitals’ environmental surveillance programs should encompass inpatient care units.
A novel ionic liquid-impregnated chitosan application for separation and purification of fission 99Mo from alkaline solution
Authors: Monir Tarek , Shahr El-Din Ahmed , El-Nadi Yasser , Ali Amal 
Published: February 2020

Abstract
In this investigation, a novel application of Aliquat 336 (tricaprylmethylammonium chloride)-impregnated chitosan (AICS) for the separation and purification of 99Mo from some fission products, such as 137Cs, 85Sr and 131I, in alkaline solution is presented. Before impregnation, pristine chitosan experienced no adsorption affinity for Mo. However, this situation dramatically changed after the impregnation. The structure of AICS was elucidated by FTIR, SEM and EDX spectra. The influence of contact time, solution pH, weight of AICS, initial Mo concentration and temperature on the adsorption process was studied. Kinetic studies revealed that the rate of adsorption was impressively very fast and only 3 min were sufficient to reach equilibrium. The pH influence showed that Mo could be effectively adsorbed over a wide range of pH 3–11. The equilibrium data fitting to isotherms models followed the order Langmuir > Freundlich > Dubinin-Radushkevich. Based on the Langmuir model, the maximum adsorption capacity was computed at 60.1 mg/L. Thermodynamic studies indicated that the adsorption process is spontaneous and endothermic in nature. Finally, a pure solution of 99Mo with a purity >99 % was obtained from a real sample. The data obtained confirmed that AICS is a promising candidate for separation and purification of 99Mo from alkaline media.
Die Online-Wahl zur Vertreterversammlung einer Genossenschaft
Authors: Bode Bernd 
Published: February 2020

Zusammenfassung
Tausende von Mitgliedern wählen eine Vertreterversammlung - da liegt die Wahldurchführung auf elektronischem Wege im Sinne eines Online-Votings nahe, um Effizienzpotentiale zu nutzen und moderne Mitwirkungsrechte anzubieten. Zugleich zeigen jedoch aktuelle Gerichtsentscheidungen, dass im Einzelfall die Judikatur erhebliche Skepsis gegenüber elektronischen Wahlverfahren hat und daher rechtliche Grenzen bestehen können. Es stellt sich die Frage, ob vor diesem Hintergrund internetbasierte Wahlverfahren überhaupt denkbar sind und welche Rahmenbedingungen bei der Ausgestaltung von Online-Wahlen im Bereich der Genossenschaften ggf. zu beachten sind.
Comparing Problem-based Learning and Experiential Learning on Civil Servant Training Program
Authors: Sediyani Linda , Budisantoso Heri Triluqman 
Published: February 2020

Problem-based learning and experiential learning are well-known learning approaches and often referred as powerful on facilitating learning practices, but which one is the most effective on facilitating civil servant training program? This article illustrates a one-shot case study in which focus on one civil servant training program only without comparing it to other programs. The training program was conducted by human resource development agency, Central Java Province, in March 2018. By employing quantitative research approach, this research found that the result of the training program indicated: there are no significant differences between problem-based learning and experiential learning approaches. In this case, the learning result from experiential learning approach is slightly above problem-based learning approach’s result.
Abstrak
Pembelajaran berbasis masalah dan berbasis pengalaman merupakan pendekatan pembelajaran yang sudah banyak dikenal dan sering disebut mampu memfasilitasi praktik pembelajaran secara optimal, namun mana di antaranya keduanya yang paling efektif dalam memfasilitasi program pelatihan PNS? Artikel ini menggambarkan one-shot case study yang fokus hanya pada satu program pelatihan PNS tanpa membandingkannya dengan program lain. Program pelatihan ini dilakukan oleh Badan Pengembangan Sumber Daya Manusia (BPSDM), Provinsi Jawa Tengah, pada Maret 2018. Dengan menggunakan pendekatan penelitian kuantitatif dapat dilihat bahwa hasil program pelatihan menunjukkan tidak terdapat perbedaan yang signifikan antara pembelajaran berbasis masalah dan pembelajaran berbasis pengalaman. Dalam hal ini, hasil pembelajaran dari pendekatan berbasis pengalaman sedikit di atas hasil pembelajaran yang menggunakan pendekatan pembelajaran berbasis masalah.
Metodologías activas en la formación crítica del magíster en enfermería
Authors: Calheiros Pereira Sobral Janaína Paula , Rodrigues Viana Maria Elizabete , Alves Lívio Thaís , Galdino dos Santos Alda , Souza Costa Bruna Gabrielle de , Alves Rozendo Célia 
Published: February 2020

Introducción: El objetivo de este trabajo es narrar la experiencia en el uso de metodologías activas en la formación de docentes de enfermería. Materiales y Métodos: Estudio descriptivo del tipo relato de experiencia, anclado en la pedagogía crítica de Paulo Freire, quien describe la experiencia de los docentes de un programa de postgrado stricto sensu en el uso de metodologías activas e innovadoras en el aula. Se utilizaron dos estrategias como ayuda en el proceso de enseñanza-aprendizaje, a saber: la dinámica y la parodia musical. Resultados: Con el uso de la dinámica de las margaritas y la parodia musical como base para discutir el contenido, el público objetivo percibió una mayor atención, así como una mayor participación en la construcción del conocimiento. Discusión: Basado en la ejecución de las actividades, la dinámica junto con la parodia podría considerarse efectiva como un proceso individual de construcción a través de diferentes formas de interacción con el entorno/contenido y motivar la conciencia crítica. Ambos despertaron la curiosidad e interés de los estudiantes, motivándolos y facilitando el proceso de aprendizaje. Tuvo lugar el desarrollo del sentido creativo y el estímulo de los procesos afectivos y cognitivos. Conclusiones: Se concluye que el uso de metodologías activas en programas de posgrado strictu sensu fomenta la participación, la discusión, la comprensión del contenido y el aprendizaje más complejos, y pueden emplearse, siempre que se tengan en cuenta el contenido, el espacio, la metodología, la audiencia y la disponibilidad de los recursos necesarios para implementar los planes.
Como citar este artigo: Sobral JPCP, Viana MER, Lívio TA, Santos AG, Costa BGS, Rozendo CA. Metodologias ativas na formação crítica de mestres em enfermagem. Rev Cuid. 2020; 11(1): e822. http://dx.doi.org/10.15649/cuidarte.822