bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of Power Factor on the Performance of Bulb Tubular Turbine Generator
Authors: Qiu Hongbo , Shen Hangyu , Yang Cunxiang , Yi Ran 
Published: March 2019

Background:
In recent years, many patents have been dedicated to increasing the rated
power factor of generators. However, hydro-generators often encounter uncontrollable factors,
such as dry season, power network adjustment, and so on, resulting in low power factor operation.
In other words, the generator is often in a low power factor operating state. In order to provide data
reference for power plant in regulating power factor, it is necessary to analyze the performance of
generator in low power factor operation.

Objective:
The performance of the generator is analyzed when the power factor decreases, and the
influence of low power factor operation on the generator is obtained. Methods: Taking a 24MW
bulb tubular turbine generator as an example, a 2D transient electromagnetic field model is established.
The correctness of the model is verified by comparing the test data and the simulation data.
The torque, eddy current loss and air gap flux density of the generator under different power factor
are calculated.

Results:
When the power factor deceases from 0.99 to 0.85, the air gap flux density increases from
0.713 T to 0.749 T, the torque ripple increases from 150.5 kN⋅m to 179.9 kN⋅m, and the rotor eddy
current loss increases from 17.48 kW to 18.15 kW.

Conclusion:
The results show that the torque ripple and eddy current loss will increase with the
decrease of power factor when the generator lagging phase operation. The torque ripple and eddy
current loss increase by 3.8 % and 1 % respectively with the power factor decrease by 0.02 % with
power factor between 0.99 and 0.85.
Grade and Gender Effects on Self-Concept Development
Authors: Alrajhi Marwa , Aldhafri Said , Alkharusi Hussain , Alharthy Ibrahim , Albarashdi Hafidah , Alhadabi Amal 
Published: March 2019

Background:
Different biological and environmental factors may play roles in the development of self-concept. Many studies have focused on gender or age differences in self-concept separately.

Objective:
The current study aimed at examining the effects of grade, gender and their interaction on the development of four self-concept dimensions (appearance, school, parent-relations, and peer-relations) among Omani adolescents.

Methods:
The study sample was 651 middle and high school students from two districts in Oman. The students were enrolled in grades 7, 9 and 11. The study utilized the Self-Description Questionnaire (SDQ-1, Marsh, 1988) to assess students' levels in the self-concepts dimensions. The study adopted the descriptive design using Two Way Multivariate Analysis of Variance.

Results:
The study results demonstrated that grade and gender interaction affected appearance self-concept development; however, this interaction had no effects on the other dimensions. Moreover, gender and grade differences were found in some dimensions of self-concept.

Conclusion:
The study suggested that the effects of grade level and gender varied based on the self-concept dimensions. Adolescents' self-concept should be given a careful attention for its important role in providing healthy outcomes.
Self-efficacy and Clinical Performance of Nurses Initiated and Management of Antiretroviral Therapy: Narrative Review
Authors: Mangi Nozuko Glenrose , Ter Goon Daniel , Yako Elizabeth Matsidiso 
Published: March 2019

Introduction:
Self-efficacy plays a major role in the behaviour of a human being by how he/she approaches a goal, task or a challenge so that a desired level of performance is produced. The objective of this paper is to review and analyse literature on self-efficacy and clinical performance among professional nurses regarding quality of care in implementation of NIMART programme.

Methodology:

A literature review was conducted using online resources. Search engines included EBSCO, Google Scholar, Medline, PubMed, Psych info and BIOMED Central articles and journals published between 2007 and 2017. Relevant papers on self-efficacy and clinical performance regarding the implementation of NIMART programme in South Africa were analysed.

Results:
278 papers were identified and 22 eligible papers were selected for analysis. Reviewed literature exhibited that self-efficacy is very crucial in the clinical performance of nurses in the implementation of NIMART. Self-efficacy helps to predict motivation and performance of individuals. Lack of mentoring, support and exposure to clinical practice had negative effect on nurse’s self-efficacy.

Conclusion:
Given the paucity of information on self-efficacy and clinical performance of NIMART in the South African context, future studies are warranted to gain more understanding of self-efficacy in the clinical performance of professional nurses.
Role of Dendrimer in Drug Solubilisation - A Review
Authors: Movliya Ravindra V. , Patel Pravinkumar M. 
Published: March 2019

Objective:Dendrimers, a new class of synthetic polymers proved themselves very useful tools for biomedical application due to their unique characteristics including water solubility, uniform size and shape, defined molecular weight, multivalency, biological compatibility and internal cavities. The hydrophobicity of a drug molecule creates hurdles in the development of effective dosage form and presents insufficient drug delivery to the target site.Methods:Solubility enhancement is one of the key properties of a dendrimer. The hydrophobic drug molecules are entrapped in the cavities of a dendrimer by complexation and get solubilized in the aqueous solution.Conclusion:The present article contains information on dendrimer and its biomedical application such as API solubility. The detailed study presents year wise survey of different research articles, research papers, reviews and patents on dendrimer and its application in drug solubility.
A Comparison of Norm Based Antenna Selection and Random Antenna Selection with Regard to Energy Efficiency in Wireless System with Large Number of Users
Authors: Taneja Ashu , Saluja Nitin 
Published: March 2019

Background:
The paper considers the wireless system with large number of users
(more than 50 users) and each user is assigned large number of antennas (around 200) at the Base
Station (BS).

Objective:
The challenges associated with the defined system are increased power consumption
and high complexity of associated circuitry. The antenna selection is introduced to combat these
problems while the usage of linear precoding reduces computational complexity. The literature
suggests number of antenna selection techniques based on statistical properties of signal. However,
each antenna selection technique suits well to specific number of users.

Methods:
In this paper, the random antenna selection is compared with norm-based antenna selection. It
is analysed that the random antenna selection leads to inefficient spectral efficiency if the number of users
are more than 50 in Multi-User Multiple-Input Multiple Output (MU-MIMO) system.

Results:
The paper proposes the optimization of Energy-Efficiency (EE) with random transmit antenna
selection for large number of users in MU-MIMO systems.

Conclusion:
Also the computation leads to optimization of number of transmit antennas at the BS
for energy efficiency. The proposed algorithm results in improvement of the energy efficiency by
27% for more than 50 users.
VLSI Implementation and Software Co-Simulation of Digital Image Watermarking with Increased Security
Authors: M. Vardhana , Bhat Anil Kumar 
Published: March 2019

Background:
Security is one of the fundamental and essential factors, which has to be addressed
in the field of communication. Communication refers to the exchange of useful information
between two or more nodes. Sometimes it is required to exchange some of the confidential information
such as a company’s logo, which needs to be hidden from the third person. The data that is
being exchanged between these nodes has to be kept confidential and secured from unintended users.
The three fundamental components of security are confidentiality, integrity and authentication. The data
that is being exchanged has to be confidential, and only the authorized party should have access to the
information that is being exchanged. One of the key methods for securing the data is encryption.

Objective:
The main objective of this paper was to address the problem of data hiding and security in
communication systems. There is a need for having hardware resources for having high speed data
security and protection.

Methods:
In this paper, we implemented image watermarking using LSB technique to hide a secret
image, and employed encryption using Advanced Encryption Standard, to enhance the security of the
image. An image is a two dimensional signal, with each pixel value representing the intensity level.
The secure transmission of the image along the channel is a challenging task, because of the reason
that, any individual can access it, if no security measures are taken.

Conclusion:
An efficient method of digital watermarking has been implemented with increased security
and performance parameters are presented.

Results:
In this paper, hardware realization of image watermarking/encryption and dewatermarking/
decryption is implemented using Very Large Scale Integration. The design is verified by means
of co-simulation using MATLAB and Xilinx. The paper also presents the performance parameters of
the design, with respect to speed, area and power.
The Role of microRNAs Identified in the Amniotic Fluid
Authors: Fasoulakis Zacharias , Theodora Marianna , Tsirkass Ioannis , Tsirka Theodora , Kalagasidou Sofia , Inagamova Lola , Papamanolis Valentinos , Blontzos Nikolaos , Kontomanolis Emmanuel N. 
Published: March 2019

Aim:
The study aimed to provide an overall view of current data considering the presence
of microRNAs in amniotic fluid.

Methods:
The available literature in MEDLINE, regarding the role of the amniotic fluid in pregnancy
and fetal development, was searched for related articles including terms such as “microRNA”, “Amniotic
fluid”, “Adverse outcome” and others.

Results:
The amniotic fluid has an undoubtedly significant part in fetal nutrition, with a protecting
and thermoregulatory role alongside. MicroRNAs have proven to be highly expressed during pregnancy
in many body liquids including amniotic fluid and are transferred between cells loaded in exosomes,
while they are also implicated in many processes during fetal development and could be potential
biomarkers for early prediction of adverse outcomes.

Conclusion:
Current knowledge reveals that amniotic fluid microRNAs participate in many developmental
and physiological processes of pregnancy including proliferation of fibroblasts, fetal development,
angiogenesis, cardioprotection, activation of signaling pathways, differentiation and cell motility,
while the expression profile of specific microRNAs has a potential prognostic role in the prediction
of Down syndrome, congenital hydronephrosis and kidney fibrosis.
Recent Patents on the Structure of High-Speed Motorized Spindle
Authors: Dai Ye , Wei Wen-Qiang , Zhang Xue-Liang , Qi Yun-Shan 
Published: March 2019

Background:
As one of the core components of high-speed CNC machine tool, high-speed
motorized spindle is the core functional component of high precision CNC machine tool, which has
become the key research and development object of the world.

Objective:
By comparing and discussing the patents of high-speed motorized spindle, some valuable
conclusions have been drawn to predict the future research and development of high-speed motorized
spindle.

Methods:
By analyzing the characteristics of high-speed motorized spindle structure, the influence of
high-speed motorized spindle on high-speed machining technology was explicated. Combining with the
key technology of high-speed motorized spindle, the patents related to high-speed motorized spindle
structure were used for investigation.

Results:
With the rapid development of high-speed cutting and numerical control technology and the
need of practical application, the requirement for high-speed spindle performance has increased. Motorized
spindle technology has the characteristics of high speed, high strength, high power, high torque
and low speed, high precision, high reliability and long life, offering diversified bearing and lubrication
cooling methods and serving as an intelligent system.

Conclusion:
The different levels of improvement and renovation of the structure with high-speed motorized
spindle, by adding lubrication and cooling device to the spindle have improve the performance
of spindle, addressing the loopholes in the technology and making it more practical.
The SGLT2 Inhibitor Dapagliflozin Reduces Liver Fat but Does Not Affect Tissue Insulin Sensitivity: A Randomized, Double-Blind, Placebo-Controlled Study With 8-Week Treatment in Type 2 Diabetes Patients
Authors: Latva-Rasku Aino , Honka Miikka-Juhani , Kullberg Joel , Mononen Nina , Lehtimäki Terho , Saltevo Juha , Kirjavainen Anna K. , Saunavaara Virva , Iozzo Patricia , Johansson Lars , Oscarsson Jan , Hannukainen Jarna C. , Nuutila Pirjo 
Published: March 2019

OBJECTIVE
The aim of this study was to investigate tissue-specific effects of dapagliflozin on insulin sensitivity and liver and body fat in patients with type 2 diabetes.

RESEARCH DESIGN AND METHODS
This randomized, double-blind, parallel group, placebo-controlled study recruited 32 patients with type 2 diabetes. Enrolled patients were to have HbA1c 6.5–10.5% (48–91 mmol/mol) and ≥3 months of stable treatment with metformin, dipeptidyl peptidase 4 inhibitor, or their combination. Patients were randomized 1:1 to receive 10 mg dapagliflozin or placebo daily for 8 weeks. Before and after the intervention, tissue insulin sensitivity was measured using [18F]-fluorodeoxyglucose and positron emission tomography during hyperinsulinemic-euglycemic clamp. Liver proton density fat fraction (PDFF) and adipose tissue volumes were assessed using MRI, and blood biomarkers were analyzed.

RESULTS
After 8 weeks, glycemic control was improved by dapagliflozin (placebo-corrected change in HbA1c −0.39%, P &lt; 0.01), but whole-body glucose uptake was not increased (P = 0.90). Tissue-specific insulin-stimulated glucose uptake did not change in skeletal muscle, liver, myocardium, or white and brown adipose tissue, and endogenous glucose production remained unaffected. However, there were significant placebo-corrected decreases in liver PDFF (−3.74%, P &lt; 0.01), liver volume (−0.10 L, P &lt; 0.05), visceral adipose tissue volume (−0.35 L, P &lt; 0.01), interleukin-6 (−1.87 pg/mL, P &lt; 0.05), and N-terminal prohormone of brain natriuretic peptide (−96 ng/L, P = 0.03).

CONCLUSIONS
In this study, 8 weeks of treatment with dapagliflozin reduced liver PDFF and the volume of visceral adipose tissue in obese patients with type 2 diabetes. Although glycemic control was improved, no effect on tissue-level insulin sensitivity was observed.
Pengaruh Model Pembelajaran Visualization Auditory Kinestetic Berbantuan Mutimedia Interaktif Terhadap Kompetensi Pengetahuan IPA
Authors: Widiartha K. D. R. 
Published: March 2019

Penelitian ini bertujuan untuk mengetahui pengaruh Model Pembelajaran Visualization Auditory Kinestetic Berbantuan Multimedia Interaktif terhadap Kompetensi Pengetahuan IPA siswa kelas V SD Gugus Dewi Sartika Tahun Pelajaran 2017/2018. Jenis penelitian ini adalah eksperimen semu (quasi ekperimen) dengan rancangan penelitian Non-Equivalen Control Grup Design. Populasi seluruh siswa kelas V SD Gugus Dewi Sartika Kecamatan Denpasar Timur yang berjumlah 327 siswa. Sampel ditentukan menggunakan teknik random sampling dengan melakukan pengundian. Sampel dalam penelitian ini yaitu SDN 16 Kesiman sebagai kelas eksperimen yang berjumlah 37 siswa dan SDN 12 Kesiman sebagai kelas kontrol yang berjumlah 34 siswa. Data kompetensi pengetahuan IPA di kumpulkan dengan metode tes yang kemudian dianalisis menggunakan uji-t. Hasil analisis diperoleh thitung = 4,953, dan pada taraf signifikasi 5% dan derajat kebebasan (dk) = 37+34-2 = 69 maka diperoleh harga ttabel = 2,000. Berdasarkan hasil tersebut, thitung = 4,953 > ttabel = 2,000. H0 di tolak yang berarti terdapat perbedaan yang signifikan kompetensi pengetahuan IPA antara kelompok eksperimen yang dibelajarkan melalui Model Pembelajaran Visualization Auditory Kinestetic berbantuan Multimedia Interaktif dengan kelompok kontrol pada kelas V SD Gugus Dewi Sartika Tahun Pelajaran 2017/2018. Hasil penelitian menunjukan nilai rata-rata kelompok eksperimen lebih tinggi daripada nilai rata-rata kelompok kontrol (87,30 > 73,53). Dengan demikian, Model Pembelajaran Visualization Auditory Kinestetic berbantuan Multimedia Interaktif berpengaruh terhadap kompetensi pengetahuan IPA siswa kelas V SD Gugus Dewi Sartika Kecamatan Denpasar Timur Tahun Pelajaran 2017/2018.
Student’s Mathematics Anxiety on The Use of Technology in Mathematics Learning
Authors: Istikomah Endang , Wahyuni Astri 
Published: March 2019

This study aim to describe the student’s mathematics anxiety on the use of technology in mathematics learning. It is a quantitative descriptive research by involving second year students of Mathematics Education Program in Universitas Islam Riau (UIR) who took Technology-based Mathematics Learning course. They were selected based on saturation sampling. Data were collected through questionnaire, in-depth interview and documentation. The results show the high level of each dimension of mathematics anxiety among students. The average score in each indicator of cognitive, affective, and physiological dimension were high. In addition, interview revealed that most of the students expressed their anxiety in the first lecture and when obtained the task of applying particular software in mathematics learning. It is mainly due to unpreparedness and lack of knowledge about the application of software. Based on the results, it can be concluded that the level of students’ mathematics anxiety is relatively high. Keywords: Mathematics anxiety, Technology-based, Mathematics learning,
The Ill-Made Knight and the Stain on the Soul
Authors: Rea Michael 
Published: March 2019

One of the main tasks for an account of the Christian doctrine of the atonement is to explain how and in what ways the salvifically relevant work of Christ heals the damage wrought by human sin on our souls, our relationships with one another, and our relationship with God. One kind of damage often neglected in philosophical treatments of the atonement, but discussed at some length in Eleonore Stump’s forthcoming At-one-ment, is what she, following St. Thomas Aquinas, calls the stain on the soul. The stain on the soul comprises the “moral leftovers” of serious evil, damage to the soul that goes beyond the guilt, shame, and separation from God brought about by sin and that lingers in a person even after she has repented and been forgiven. In this paper, I critically examine Stump’s account of how the work of Christ deals with the problem of the stain on the soul. I offer reasons for thinking that if the stain is exactly as she describes it, then it is indelible; and then I explore possible ways forward for her account of the atonement.
Prospects for Panentheism as Research Program
Authors: Clayton Philip 
Published: March 2019

Panentheism is best understood as a philosophical research program. Identifying the core of the research program offers a strong response to the demarcation objection. It also helps focus both objections to and defenses of panentheism — and to show why common objections are not actually criticisms of the position we are defending. The paper also addresses two common criticisms: the alleged inadequacy of panentheism’s double “in” specification of the relationship between God and world, and the “double God” objection. Once the research program framework is in place, topics like these become opportunities for panentheists to engage in the kind of careful constructive work in theology and philosophy — historical, analytic, and systematic — that is required for making long-term, positive contributions to our field.
XIX CONGRESO ARGENTINO DE HERPETOLOGÍA
Authors: Argentina Asociación Herpetológica , Y Museo Facultad de Ciencias Naturales 
Published: March 2019

2 al 5 de Octubre de 2018Edificio Sergio KarakachoffUniversidad Nacional de La Plata, Argentina Comisión organizadoraLeandro AlcaldeMaría Luz ArrellanoFlorencia BahlEvelina BarretoPaula BonaDiego Di PietroRegina DraghiFederico KacolirisCamila KassNicolás KassTomás Martinez AguirreGuillermo NataleAlejandro OteroSergio RossetCarolina Salgado CostaJesica SansiñenaBelén SemeñiukMelina VelascoJorge Williams Colaboradores María Emilia ArrutiRodrigo CalvoHabib Delfino AhumadaIsabel FerreyraDamián FortunatoPaola García MoyaEmmanuel ImizcozAgustina OlivaFederico OserMorena PantucciMaximiliano RocchiJorge RossiJuan Francisco RossiMauro Rozas SiaAna Belén TenorioGermán TetamantiOrnella Zarini
Catheter occlusion of the dorsal sagittal sinus–confluens sinuum to enable resection of lateral occipital multilobular osteochondrosarcoma in two dogs
Authors: McAnulty Jonathan F. , Budgeon Casey , Waller Kenneth R. 
Published: March 2019

Abstract

CASE DESCRIPTION
A 6-year-old neutered male mixed-breed dog (dog 1) and 5-year-old neutered male Boston Terrier (dog 2) were evaluated because of lateralized multilobular osteochondrosarcoma (MLO) of the occiput.

CLINICAL FINDINGS
Diagnostic imaging revealed proliferative bony occipital masses in both dogs and a nodule in the right caudal lung lobe of dog 1. For both dogs, MRI revealed intact flow through the dorsal sagittal sinus (DSS) into 1 transverse sinus.

TREATMENT AND OUTCOME
In dog 1, a 4F balloon catheter was introduced into the DSS to the confluens sinuum (CS) and inflated over 16 hours to occlude venous flow. The mass with the CS was removed 24 hours later, and the skull was reconstructed. The dog was discharged from the hospital 2 days after surgery and survived 17 months before euthanasia because of metastasis. In dog 2, balloon catheter insertion into the DSS failed, and a 3.5F rubber catheter was placed up to the CS to occlude flow. The occiput with MLO was removed 48 hours after catheterization, and the skull was reconstructed. Dog 2 was discharged from the hospital after 3 days and was doing well 15 months later.

CLINICAL RELEVANCE
Findings for these 2 dogs suggested that deliberate preoperative occlusion of the DSS and CS allows successful resection of occipital neoplasms across the midline. Without prior occlusion of the DSS, development of lethal cerebral edema would have been likely. Gradual balloon catheter occlusion of the CS may facilitate challenging occipital mass excisions.