bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of variation of water quality parameters along treatment processes in OPA waterworks, ILE-IFE, Nigeria
Authors: O. Jeje J. , O. Fadipe O. , T. Oladepo K. 
Published: February 2023

This study was conducted to assess the variation of water quality parameters along the treatment processes of Opa Waterworks at Obafemi Awolowo University, Ile â€“ Ife, Nigeria. This was to ascertain how chemical and physical parameters vary along the treatment plant visits while at the same time ensuring that the influent and effluent conforms to water quality standards set by the World Health Organization.Determination of physicochemical parameters; pH, temperature, conductivity, turbidity, nitrate and chloride was done by Â using standard methods while a colorimetric, Â and atomic absorption spectrometry methods were used for the selected heavy metals; cadmium, zinc and copper.It was observed that for the influent, the concentration of lead was 9.44 mg/l, nitrate 0.25 mg/l, chloride 18.27 mg/l, sulphate 4.29 mg/l, copper 4.55 mg/l, zinc 0.07 mg/l and cadmium 1.10 mg/l. For the effluent, the concentration of nitrate was 0.22 mg/l, chloride 16.01 mg/l and sulphate 4.29 mg/l while that of lead, copper, zinc and cadmium was 0.00 mg/l. The overall results show that the concentrations of the water quality parameters tested conform to the World Health Organization water quality standards at the effluent points of the treatment plant.Â Â
The discovery and importance of the higgs boson
Authors: Pereira da Silva Jizreel 
Published: February 2023

This work presents the importance of the existence of the Higgs boson, a particle with a mechanism capable of generating mass for other elementary particles, where interacting particles receive mass and those that do not interact, do not receive mass. The work shows the understanding of the mechanism for the interactions of particles with the Higgs boson and analysis of the experiments carried out at CERN, together with other detectors such as CMS and ATLAS, in the search over 50 years for the physicist Peter Higgs, suggesting a new theory necessary for the existence of the mechanism that would generate mass for the other particles. Even with the scientific advance through the discovery of the Higgs boson and its explanation within the Standard Model, we still have questions to be answered by not explaining gravitational interaction, hierarchy problem, extra dimensions, supersymmetry, dark matter, among others. The discovery and importance of the Higgs boson is another achievement for science, int the sense that we are on the right path, even recognizing the limitations of equipment and investments, but in the search for the truth and answer in favor of a more structured society, such as improved health, living in an environment with less pollution, advancement in technology, resulting in several positive factors for humanity.Â Â
Biological variation estimates for spot urine analytes and analyte/creatinine ratios in 33 healthy subjects
Authors: Yılmaz Çalık Gizem , Şeneş Mehmet 
Published: February 2023

Abstract

Objectives
Urine samples are frequently used in the clinical practice. In our study, we aimed to calculate the biological variations (BV) of analytes and analyte/creatinine ratios measured in spot urine.

Methods
Second-morning spot urine samples were collected from 33 (16 female, 17 male) healthy volunteers once weekly for 10 weeks and analyzed in the Roche Cobas 6,000 instrument. Statistical analyzes were performed using BioVar, an online BV calculation software. The data were evaluated in terms of normality, outliers, steady state, homogeneity of the data, and BV values were obtained by analysis of variance (ANOVA). A strict protocol was established for within-subject (CVI) and between-subject (CVG) estimates for both genders.

Results
There was a significant difference between female/male CVI estimates of all analytes except potassium, calcium and magnesium. No difference was found in CVG estimates. When the analytes that had a significant difference in CVI estimates in spot urine analytes were compared to creatinine, it was observed that the significant difference between the genders disappeared. There was no significant difference between female/male CVI and CVG estimates in all spot urine analyte/creatinine ratios.

Conclusions
Since the CVI estimates of analyte/creatinine ratios are lower, it would be more reasonable to use them in result reporting. Reference ranges should be used with caution, since II values of almost all parameters are between 0.6 and 1.4. The CVI detection power of our study is 1, which is the highest value.
Sustainable high-strength lightweight concrete with pumice stone and sugar molasses
Authors: Mohammed Tamara Amer , Kadhim Hayder Mohammed 
Published: February 2023

AbstractThe building sector benefits from high-strength lightweight concrete (HSLWC) in various aspects, particularly in reducing the structure’s dead load. Incorporating waste materials into HSLWC encourages sustainable practices, reduces their environmental effect, and decreases product’s costs. This research focuses on producing sustainable HSLWC using a pumice stone and additive materials such as sugar molasses, silica fume, and high-range water reduction. The physical and mechanical properties and structural efficiency were investigated. The results demonstrate that the inclusion of additive material is the primary factor controlling the properties of the concrete. Also, using pumice stone instead of gravel in high-strength concrete significantly reduced weight and increased thermal insulation by 19.31 and 43.55%, respectively. Furthermore, the addition of steel fibers in HSLWC improved the compressive strength, tensile strength, ductility, and structural efficiency.
circ_0000376 knockdown suppresses non-small cell lung cancer cell tumor properties by the miR-545-3p/PDPK1 pathway
Authors: Sun Changpeng , Guan Hongjun , Li Jinjin , Gu Yinfeng 
Published: February 2023

Abstract
Non-small cell lung cancer (NSCLC) accounts for 80% of total lung cancers, which are the main killer of cancer-related death worldwide. Circular RNA (circRNA) has been found to modulate NSCLC development. However, the role of circ_0000376 in NSCLC development has been underreported. The present work showed that circ_0000376 and 3-phos-phoinositide-dependent protein kinase-1 (PDPK1) expression were dramatically increased, but miR-545-3p was decreased in NSCLC tissues and cells. circ_0000376 expression was closely associated with lymph node metastasis, tumor-node-metastasis stage, and tumor size of NSCLC patients. circ_0000376 knockdown repressed NSCLC cell proliferation, migration, invasion, and glutaminolysis but induced cell apoptosis. Additionally, miR-545-3p bound to circ_0000376, and circ_0000376 regulated cell phenotypes by associating with miR-545-3p. MiR-545-3p also participated in NSCLC cell proliferation, migration, invasion, apoptosis, and glutaminolysis by targeting PDPK1. Further, circ_0000376 absence repressed tumor formation in vivo. Collectively, circ_0000376 regulated NSCLC cell tumor properties by the miR-545-3p/PDPK1 axis, suggesting that circ_0000376 could be employed as a therapeutic target for NSCLC.
Addendum to “A generalization of a result on the sum of element orders of a finite group”
Authors: Lazorec Mihai-Silviu , Tărnăuceanu Marius 
Published: February 2023

Abstract
Let G be a group of order n and H be a subgroup of order m of G. Denote by ψ

H
(G) the sum of element orders relative to H of G. It is known that if G is nilpotent, then

ψ
H

(
G
)
≤

ψ

H
m

(

C
n

)

$ \psi_H(G) \leq\psi_{H_m}(C_n) $

, where H

m
is the unique subgroup of order m of C

n
. In this note, we show that this inequality does not hold for infinitely many finite solvable groups.
The evaluation of the mechanical properties of glass, kenaf, and honeycomb fiber-reinforced composite
Authors: Abidin Nur Marini Zainal , Sultan Mohamed Thariq Hameed , Md Shah Ain Umaira , Shahar Farah Syazwani , Najeeb Muhammad Imran , Ali Mohd Radzi , Basri Adi Azriff , Baloor Satish Shenoy , Gaff Milan , Hui David 
Published: February 2023

Abstract
The development of hybrid composite materials using honeycomb structure, typically a lightweight material, is commonly used in aircraft structures. However, the use of honeycomb with natural or synthetic composite remains unexplored in the literature. Therefore, this study aims to partially replace synthetic fiber, woven glass with a natural fiber of woven kenaf and honeycomb core. An experimental analysis investigated the mechanical strength of three different compositions using glass, kenaf, and honeycomb materials for structural application purposes. The properties of the sample were evaluated through the tensile, flexural, and impact strength, and the morphological damage was observed using scanning electron microscopy. The results showed that the composition of GKGKG laminate composite is the highest in tensile strength (147.64 MPa) and modulus (3.9 GPa), while the GKHKG composite was good in flexural strength (219.03 MPa) and modulus (11.47 GPa). In terms of impact properties, there was a slight difference in energy level (20–30 J) by GKGKG and GKHKG, showing the optimal hybrid configuration of composite for the newly developed material. In conclusion, the application of the new hybrid of GKHKG composite is promising in semi-structural and structural light-weight applications.
Progress of sensitive materials in chemiresistive sensors for detecting chemical warfare agent simulants: A review
Authors: Yang Liu , Qin Molin , Zhang Genwei , Yang Jie , Yang Junchao , Zhao Jiang 
Published: February 2023

Abstract
Chemical warfare agents (CWAs) are chemical substances intended for use in military operations to kill, injure, or incapacitate an enemy. It is very important to detect toxic CWAs at trace levels on site. Compared with traditional CWA analysis instrument methods, chemiresistive gas sensors present advantages of being small, fast, and inexpensive. Chemiresistive gas sensors are still an important research topic with the development of nanofabrication technology and new kinds of sensing materials, including carbon nanotubes, graphene, and black phosphorus (BP). Chemiresistive gas sensors are divided into three categories according to the type of sensitive materials: carbon- and BP-based materials, conductive polymers, and metal oxide semiconductors. A brief analysis was carried out on fabrication strategies using sensitive materials, including hydrogen bonding strategies, nanostructures, morphology, doping effects, composite materials, and other material application methods, and the sensitive materials and detection effects are summarized in this study. This review aims to provide guidance in the development of chemiresistive sensors for the detection of CWAs.
Growing axons: greedy learning of neural networks with application to function approximation
Authors: Fokina Daria , Oseledets Ivan 
Published: February 2023

Abstract
We propose a new method for learning deep neural network models, which is based on a greedy learning approach: we add one basis function at a time, and a new basis function is generated as a non-linear activation function applied to a linear combination of the previous basis functions. Such a method (growing deep neural network by one neuron at a time) allows us to compute much more accurate approximants for several model problems in function approximation.
Quantifying the Workability of Cold In-Place Recycling in the Laboratory
Authors: Williams Archie Gus , Braham Andrew F. , Casillas Sadie 
Published: February 2023

Abstract
The Dongre Workability Test (DWT) is a method for determining an asphalt pavement’s relative workability based on stress–strain relationships during compaction in a Superpave gyratory compactor. Although the DWT has seen favorable results with warm-mix and hot-mix asphalt, there has been limited attempts to apply it to cold-mix asphalt (CMA), and those limited attempts did not provide conclusive results. This research re-examined the curves developed during the DWT data collection in order to better quantify the workability of CMA, specifically, cold in-place recycling (CIR). Phase one consisted of defining ten possible metrics from the stress–strain curve and applying them to samples with three different curing conditions. From these preliminary results, the five metrics that showed the greatest differences between curing conditions with small relative coefficients of variation were chosen for continued evaluation. In phase two, these five metrics were applied to three different asphalt emulsions at four different curing conditions (temperature-minutes: 10C-30, 10C-120, 60C-30, and 60C-120). Two metrics based on different areas under the stress–strain curve yielded the most logical and consistent results, with higher values indicating a more workable mixture. Samples cured for 30 minutes at either 10°C or 60°C showed the most noticeable distinction between workability of each asphalt emulsion. Moving forward, it is recommended these metrics be applied to additional asphalt emulsions, reclaimed asphalt pavement sources and gradations, and curing conditions to determine if the DWT method can be modified for application to CIR mixtures.
Evaluating the Creep Deformation and Elastic Recovery of Different Polymer-Modified Bitumens Using a New Bitumen Quality Control Test
Authors: Cai Fengjie , Feng Zhen-gang , Chen Tingting , Li Shikai , Wei Jincheng , Li Xinjun 
Published: February 2023

Abstract
To quickly and accurately evaluate the creep deformation and elastic recovery performance of polymer-modified bitumen, a new bitumen quality control test (QCT) was carried out to analyze the creep deformation and recovery properties of styrene-butadiene-styrene (SBS)-modified bitumen and rubber powder–modified bitumen with different modifier dosage at 15°C, 20°C, 25°C, and 30°C. At the same time, the creep deformation speed of different polymer-modified bitumens was also investigated based on the QCT results. Then, the penetration and dynamic shear rheological tests were implemented on these binders to establish the relationship between QCT indexes (maximum creep deformation and deformation recovery rate) and physical–rheological indexes (penetration and complex viscosity). Results show that the creep deformation resistance and elastic recovery ability of bitumen enhance gradually with the increase of both SBS and rubber powder. Between SBS and rubber powder, SBS exhibits a more significant influence on the creep deformation resistance and elastic recovery properties of bitumen than rubber powder under the same temperature and modifier dosage. A polymer-modified bitumen with smaller penetration and bigger complex viscosity is prone to better creep deformation resistance and elastic recovery performance.
Una propuesta curricular de educadores para educadores en tiempos de pandemia: propuesta de una maestría en educación con énfasis en procesos de aprendizaje en entornos virtuales
Authors: Seravalli-Monge Giannina , Calderón Mejías Cristina 
Published: February 2023

The various educational scenarios pose changes related not only to the roles of the actors that participate in them, but also to the teaching and learning processes. The arrival of the COVID-19 pandemic required the incorporation of technological tools for the development of the educational process in virtual environments. This is how the question that guides this research arises: how to meet the needs of teacher training from any school level in terms of virtual pedagogical mediation so that teachers develop the necessary technological skills to face the challenges of education in the 21st century? The research focused on diagnosing the teacher training needs of 53 national and international in-service teachers who were working during the COVID-19 pandemic in 2021. The study was based on the mixed-method approach by using both qualitative and quantitative techniques and instruments which were applied to teachers in service from both inside and outside the country, employers, and administrators of the Master’s Degree of Education of the Department of Educology from Universidad Nacional, Costa Rica. The result revealed that the vast majority of educators possess technological knowledge and competence when using technological tools; however, they lack skills for the development of pedagogical mediation through virtual environments. For that reason, the curricular proposal for the design of a Master's Degree in Education with an Emphasis on Learning Processes in Virtual Environments was created as a product of a research process to obtain the Doctorate Degree in Curricular Development from the Michoacán Interdisciplinary Pedagogical University (UNIPEM) in Morelia, México. This curricular proposal intends to train teachers from any educational level not only at a national but also at an international scope.
Keywords: curricular design, higher education, pedagogical mediation, virtual environments.
Nachhaltigkeitsrisiken für Kreditinstitute
Authors: Kumpan Christoph , Misterek Robin 
Published: February 2023

Zusammenfassung
Kreditinstitute spielen eine zentrale Rolle bei der Bekämpfung des Klimawandels und sind gleichzeitig besonders stark von diesem betroffen. Finanziell schlagen ESG-Faktoren – auch abseits vom Klimawandel – immer mehr auf alle bankrechtlichen Risikoarten durch. Dieser Beitrag beleuchtet die bisherigen Antworten des Bankenaufsichtsrechts und erörtert verbleibende Regulierungsperspektiven. Dabei werden die methodischen Möglichkeiten den praktischen Grenzen im Rahmen der Identifikation und Bewertung von ESG-Risiken gegenübergestellt.
Die geplante „European Green Bond“-Verordnung und ihre (international-)privatrechtliche Durchsetzung
Authors: Renner Moritz 
Published: February 2023

Zusammenfassung
Mit der aktuell diskutierten Verordnung über europäische grüne Anleihen will die EU auf dem Markt für Green Bonds größere Rechtssicherheit schaffen. Die Durchsetzung der geplanten Verordnung wirft aber Fragen auf. Die Verordnung soll einen freiwilligen Standard für „European Green Bonds“ mit potenziell globaler Reichweite aufstellen. Sie sieht selbst keine privatrechtlichen Ansprüche vor. Anleger können jedoch bei zweckwidriger Verwendung der Emissionserlöse nach dem jeweils anwendbaren nationalen Recht vertragliche und vorvertragliche Ansprüche ebenso wie Ansprüche aus Kapitalmarkthaftung geltend machen.
The 24/7 anywhere branch: Mobile-banking improves financial decision-making – or does it?
Authors: Becker Michel 
Published: February 2023

Abstract
Mobile-banking – making banking transactions through mobile devices like smart phones – might improve financial decision-making by customers. My study finds customers to retrieve information about their financial situation more often after adopting mobile-banking. In addition, I document that the higher transparency about the financial situation is associated with improved financial-decision-making of mobile-banking users. Concretely, I find mobile-banking adopters to suffer less from high-interest overdraft debt. Additionally, mobile-banking adopters reduce overdraft interest and fees by reducing consumption spending, increase credit card utilization and transfer liquidity from savings accounts in times of overdraft. Finally, I show that those mobile-banking adopters, who formerly did not use the online banking service of the bank, benefit from mobile-banking adoption the strongest.
Lipstick influence on teeth colour appearance
Authors: Varvara Elena Bianca , Frandes Elena , Varvara Adrian Mihai 
Published: February 2023

Background and aim. A beautiful smile with white and shiny teeth is nowadays a must, according to aesthetics norms. The color of the lips, with or without lipstick, may influence the appearance of the teeth color. The objective of the study was to evaluate the influence of the lipstick on the tooth color appearance.
Methods. Four female patient smiles were photographed from the frontal view with five different colored lipsticks. Each photo was evaluated by 100 observers and noted from 1-dark to 6 -white. Data were statistically analyzed with dedicated software.
Results. The majority of the observers noted with lower grades the nude lipstick color photos and with higher grades the red and purple ones.
Conclusion. Within the limitation of the study, the surrounding (the lipstick) has an important influence on the appearance of the tooth color.
Публічна адміністрація як суб’єкт реформування пенсійної системи України в умовах трансформаційних змін
Authors: Парфьонов Ярослав 
Published: February 2023

Зазначено, що всі сфери суспільного життя потребують публічного управління, яке здійснюють відповідні суб’єкти публічної адміністрації, і які наділені законом повноваженнями та компетенцією здійснювати від імені держави владно-управлінські функції. Публічне адміністрування щодо системи пенсійного забезпечення здійснює система державних та недержавних органів, яким делеговано державні повноваження. При цьому, одні суб’єкти виконують загальні повноваження в рамках своєї компетенції, а інші є безпосередніми учасниками пенсійних відносин.
Відзначено, що публічне адміністрування системи пенсійного забезпечення являє собою публічно-владну діяльність компетентних органів різних рівнів, предметом якої є соціальний захист осіб, належать до категорії пенсіонерів. Соціальний захист пенсіонерів здійснюється суб’єктами публічної адміністрації в різних напрямках: соціальне страхування, пенсійне забезпечення, соціальне обслуговування тощо.
Отже, діяльність публічної адміністрації щодо здійснення соціального захисту і щодо пенсійного забезпечення даної категорії осіб, характеризується певними ознаками, які подано в тексті статті.
Здійснено детальний аналіз функцій та компетенцій суб’єктів публічної адміністрації щодо соціального захисту пенсіонерів, що дає можливість нам здійснити їх розподіл на суб’єктів загальної компетенції та суб’єктів спеціальної компетенції. До суб’єктів загальної компетенції пропонуємо віднести: ВРУ, Президента України, КМУ, місцеві суб’єкти публічної адміністрації.
Визначено, що кожна без виключення сфера суспільного життя потребує управління, яке здійснюють відповідні суб’єкти публічної адміністрації, які наділені законом повноваженнями та компетенцією здійснювати від імені держави владно-управлінські функції. Публічне адміністрування щодо системи пенсійного забезпечення здійснює система державних та недержавних органів, яким делеговано державні повноваження. При цьому, одні суб’єкти виконують загальні повноваження в рамках своєї компетенції, а інші є безпосередніми учасниками пенсійних відносин.