bluuebunny/crossref_metadata_2025_split huggingface dataset:
Predictive model linking super-rotation, magnetospheric generation and atmospheric heating
Authors: Merrison Jonathan Peter 
Published: January 2021

Abstract
This work applies a previously suggested model of gravitational field propagation to various planetary bodies within the solar system. Primarily the goal has been to critically test the validity of this model by identifying observations which are in direct conflict with it. Specifically this model predicts a Doppler shift in gravitational acceleration (gD). Applying the model to the planets and the Sun gD acts to increase planetary spin, opposing various sources of drag. The model is seen not to be in conflict with a wide variety of observed parameters which have been treated here and is shown to quantitatively account for several observed phenomena previously thought to be unrelated and which have been di˚cult to explain conventionally. These phenomena include the internal heat generation and magnetospheric generation within the gas giants as well as super rotation which seen in most planetary atmospheres as well as the Sun as differential rotation. This model for the first time provides a quantitative prediction of the low internal heat generation seen in Uranus compared to Neptune. It also provides a novel mechanism for solar coronal heating, thermospheric heating in the gas giants and the correlation between climate and magnetosphere observed on Earth.
Bibliometric profiles of top 50 most cited articles on bioactive glass
Authors: Sujon Mamun Khan , Noor Siti Noor Fazliah Mohd , Zabidi Muhammad Azrul Bin , Shariff Khairul Anuar , Alam Mohammad Khursheed 
Published: January 2021

AbstractCitation analysis of a certain publication acknowledges its impact on the scientific community. This study conducted a multivariate analysis of the top 50 most cited articles published on the field of Bioactive Glass. A systemic search was performed using the “All database” section of the Web of Science to retrieve the top 50 most cited original publications. The selected articles were then manually cross-matched with Elsevier Scopus and Google Scholar Database. Parameters such as article title, authorship, institution, country of publication, year, citation count, citation density, current citation index, and journal name were retrieved from Web of Science. Different ranges of citation numbers were retrieved for these publications in which 197-913 are from Web of Science, 209-962 are from Elsevier Scopus, and 269-1225 are from Google Scholar. A total of 153 authors contributed to this marked list, where Professor L.L. Hench contributed the highest number of articles (n=21). Imperial College London published the highest number of articles (n=21). In summary, this study provides a good scientometric picture of bioactive glass related publications, which illustrate the trend of biomaterials development over the years and suggests future scopes to the scientific community.
The complete mitogenome sequence of the coral lily (Lilium pumilum) and the Lanzhou lily (Lilium davidii) in China
Authors: Qi Xiangying , Wang Kaiqi , Yang Liping , Deng Zhenshan , Sun Zhihong 
Published: January 2021

AbstractBackgroundThe mitogenomes of higher plants are conserved. This study was performed to complete the mitogenome of two China Lilium species (Lilium pumilum Redouté and Lilium davidii var. unicolor (Hoog) cotton).MethodsGenomic DNA was separately extracted from the leaves of L. pumilum and L. davidii in triplicate and used for sequencing. The mitogenome of Allium cepa was used as a reference. Genome assembly, annotation and phylogenetic tree were analyzed.ResultsThe mitogenome of L. pumilum and L. davidii was 988,986 bp and 924,401 bp in length, respectively. There were 22 core protein-coding genes (including atp1, atp4, atp6, atp9, ccmB, ccmC, ccmFc, ccmFN1, ccmFN2, cob, cox3, matR, mttB, nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad7 and nad9), one open reading frame and one ribosomal protein-coding gene (rps12) in the mitogenomes. Compared with the A. cepa mitogenome, the coding sequence of the 24 genes and intergenic spacers in L. pumilum and L. davidii mitogenome contained 1,621 and 1,617 variable sites, respectively. In the phylogenetic tree, L. pumilum and L. davidii were distinct from A. cepa (NC_030100).ConclusionsL. pumilum and L. davidii mitogenomes have far distances from other plants. This study provided additional information on the species resources of China Lilium.
Ropivacaine inhibits proliferation, migration, and invasion while inducing apoptosis of glioma cells by regulating the SNHG16/miR-424-5p axis
Authors: Liu Rong , Wu Min , Xu Guiju , Ju Lu , Xiao Jinhui , Zhong Wei , He Xiao , Yang Yan 
Published: January 2021

AbstractBackgroundRegional anesthesia has anti-proliferative and pro-apoptotic effects in various cancers. Therefore, the purpose of this study was to investigate the effects of ropivacaine on the proliferation, migration, invasion, and apoptosis of glioma cells in vitro.MethodsUnder ropivacaine stimulation conditions, proliferation, apoptosis, migration, and invasion of glioma cells were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazol-3-ium bromide (MTT), flow cytometry, and transwell assays, respectively. Western blot assay was employed to measure the protein expression levels in glioma cells. The expression levels of small nucleolar RNA host gene 16 (SNHG16) and miR-424-5p were assessed by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The interaction relationship between SNHG16 and miR-424-5p was predicted and confirmed using a bioinformatics database and dual-luciferase reporter, RNA immunoprecipitation (RIP) and RNA pull-down assays.ResultsAfter treatment with ropivacaine, proliferation, migration, and invasion were repressed while apoptosis was enhanced in glioma cells in a dose-depended manner. In addition, ropivacaine impeded SNHG16 expression in glioma cells. Importantly, overexpression of SNHG16 abolished the ropivacaine-induced effects on glioma cells. Analogously, knockdown of miR-424-5p counteracted the function of ropivacaine in glioma cells. We also found that SNHG16 bound to miR-424-5p and negatively regulated miR-424-5p expression in glioma cells. The rescue experiments indicated that ropivacaine might regulate glioma progression by targeting the SNHG16/miR-424-5p axis.ConclusionOur findings revealed the anti-tumor effects of ropivacaine in glioma by targeting the SNHG16/miR-424-5p axis. These data might extend the understanding of regulatory mechanisms by which ropivacaine could suppress glioma development.
Exogenous spermidine affects polyamine metabolism in the mouse hypothalamus
Authors: Jiang Dongmei , Mo Guilin , Jiang Yilong , Kang Bo 
Published: January 2021

Abstract
Spermidine is important for the hypothalamic control of pituitary secretion of hormones involved in neuroendocrine functions in mammals. In this study, the effect of exogenous spermidine on the expression of genes and proteins related to polyamine metabolism and polyamine levels was examined. The results indicated that treatment with spermidine at 0.05 mg/g (BW) significantly increased the levels of Oaz1 mRNA and protein expression and decreased putrescine content in mouse hypothalamus (p < 0.05). The administration with spermidine at 0.10 mg/g significantly increased the levels of Oaz1, Oaz2, and Odc expression in mouse hypothalamus (p < 0.05). Treatment with spermidine at 0.05 mg/g significantly increased the levels of Ssat mRNA expression and reduced the level of Smo mRNA expression in mouse hypothalamus (p < 0.05). Putrescine concentrations in the hypothalamus after the administration of spermidine at 0.10 and 0.15 mg/g were significantly higher than those in the control group (p < 0.05). The concentration of both spermidine and spermine in the hypothalamus after the administration of spermidine at 0.15 mg/g was decreased significantly (p < 0.05). In summary, our results indicate that exogenous spermidine affects polyamine homeostasis in the mouse hypothalamus by modulating the expression of genes and proteins related to polyamine metabolism.
A new phenyl alkyl ester and a new combretin triterpene derivative from Combretum fragrans F. Hoffm (Combretaceae) and antiproliferative activity
Authors: Gade Isaac Silvère , Chadeneau Corinne , Simo Richard Tagne , Talla Emmanuel , Atchade Alex De Theodore , Seité Paule , Vannier Brigitte , Laurent Sophie , Henoumont Celine , Nwabo Kamdje Armel H. , Muller Jean-Marc 
Published: January 2021

AbstractThis work concerns the isolation and structure elucidation of compounds obtained from the extract of leaves and stem bark of Combretum fragrans F. Hoffm. Both extracts and some isolated compounds were tested for antiproliferative activity on glioblastoma (U87MG and C6 cells) and prostate (PC-3 cells) cancer cell lines using XTT (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxyanilide inner salt) assay. The dichloromethane/methanol (1:1) extract of the leaves led to the isolation of two new compounds such as fragransinate (1) and combretin C (2), alongside five known compounds such as combretin A (3), belamcanidin (4), cirsilineol (5), velutin (6), and a mixture of β-sitosterol-3-O-β-d-glucopyranoside (10a) and stigmasterol-3-O-β-d-glucopyranoside (10b), whereas the methanol extract of the stem bark led to the isolation of three known compounds betulinic acid (7), bellericagenin B (8), and a mixture of β-sitosterol (9a) and stigmasterol (9b). The structure of compounds was elucidated by nuclear magnetic resonance and mass spectrometry data. The methanol extract of the stem bark showed a powerful antiproliferative activity on all tested cells, as well as the extract of leaves which also showed important cytotoxicity effect. Compound (3) showed good antiproliferative activity particularly on U87MG and PC-3 cells, whereas compound (5) exhibits moderated activity. Compounds (2) and (8) were not active on all tested cells.
An iterative algorithm for the system of split mixed equilibrium problem
Authors: Karahan Ibrahim , Jolaoso Lateef Olakunle 
Published: January 2021

AbstractIn this article, a new problem that is called system of split mixed equilibrium problems is introduced. This problem is more general than many other equilibrium problems such as problems of system of equilibrium, system of split equilibrium, split mixed equilibrium, and system of split variational inequality. A new iterative algorithm is proposed, and it is shown that it satisfies the weak convergence conditions for nonexpansive mappings in real Hilbert spaces. Also, an application to system of split variational inequality problems and a numeric example are given to show the efficiency of the results. Finally, we compare its rate of convergence other algorithms and show that the proposed method converges faster.
Inequality in Higher Education: Why Did Expanding Access Not Reduce Skill Inequality?
Authors: Borgonovi Francesca , Marconi Gabriele 
Published: January 2021

AbstractLack of comparable cross-country data on access to and participation into higher education (HE) among disadvantaged and marginalised communities prevents a comprehensive examination of the role of education in shaping social mobility and how this has changed following educational expansions. We use data from the OECD Survey of Adult Skills, the Programme for International Student Assessment as well as administrative and census data from several countries to provide a comprehensive cross-country overview of the relationship between, on the one hand, socio-economic background, migrant background, and place of residence, and on the other hand, HE expectations, participation and completion. We find that when a higher share of the population has access to higher education, inequalities in access and completion are lower, but inequalities in skill levels remain unchanged. This could be due to the varying degree of inequality observed at different levels of higher education; as well as to the differences in the aspirations secondary school students express of enrolling and completing HE. We discuss implications for research and policy.
Digital Didactic Objectives of Primary, Secondary, and Higher Education Curricula in the 21st Century Executable with a Single-board Computer
Authors: Nothacker Jens , Lavicza Zsolt 
Published: January 2021

AbstractThis paper deals with the didactic objectives and content from the latest curricula of the different types of schools (schools, colleges, universities) in the D-A-CH regions. The aim of this paper is to provide an overview of the didactic goals of current and future curricula for primary, secondary, and high school, which are feasible with a single board computer. For this purpose, the curricula are analysed according to digital terms and methods of information technology with a qualitative deductive meta-analysis and assigned to different categories. The results are presented in different diagrams for evaluation, from which the results can be interpreted. The results include a list of digital didactic goals, structured according to school type, competencies, and feasibility, which can be implemented with a single-board computer. All in all, it was found that an inexpensive single-board computer is quite sufficient for the acquisition and implementation of the digital goals and skills to be taught in the curricula. Furthermore, it was found out how the changes in the curricula have established themselves in the different regions with a time lag and which competencies are taught at the individual school levels. The paper concludes with a recommendation for further studies.
Effect of weld metal composition on impact toughness properties of shielded metal arc welded ultra-high hard armor steel joints
Authors: Balaguru V. , Balasubramanian Visvalingam , Sivakumar P. 
Published: January 2021

Abstract
Nowadays, ultra-high hard armor (UHA) steels are employed in armor tracked vehicle (ATV) construction because of their high hardness, high strength to weight ratio, and excellent toughness. UHA steels are usually welded using austenitic stainless steel (ASS) welding consumables, to avoid hydrogen-induced cracking (HIC). The use of ASS consumables to weld the above steel was the only available remedy because of higher solubility of hydrogen in the austenitic phase. In this investigation, an attempt was made to investigate the effect of ASS consumables (with different Cr
eq
/Ni
eq
ratio) on solidification mode, impact toughness and microstructural characteristics of shielded metal arc (SMA) welded UHA steel joints. The welded joints were characterised based on impact toughness properties, hardness, and microstructural features. As the ferrite number increases with an increase in Cr
eq
/Ni
eq
ratio result in different solidification mode (A, FA, F). It is also found that ferrite number of weld metal has appreciable influence on impact toughness and has inversely proportional relationship with impact toughness of the welded joints.
Numerical and experimental study of the dynamic factor of the dynamic load on the urban railway
Authors: Anh Dung Tran , Van Tham Mai , Xuan Quy Do , The Truyen Tran , Van Ky Pham , Hai Ha Le 
Published: January 2021

Abstract
This paper presents simulation calculations and experimental measurements to determine the dynamic load factor (DLF) of train on the urban railway in Vietnam. Simulation calculations are performed by SIMPACK software. Dynamic measurement experiments were conducted on Cat Linh – Ha Dong line. The simulation and experimental results provide the DLF values with the largest difference of 2.46% when the train speed varies from 0 km/h to 80 km/h
Design and analysis of full duplex RoF system with efficient phase noise cancellation from a coherent RoF system
Authors: Chandrasenan Archa , Zacharias Joseph 
Published: January 2021

Abstract
A energy efficient and high throughput bi directional radio over fiber (RoF) system is designed and analysed. In order to preserve the phase and the magnitude of the transmitted signals, coherent detection (CD) is employed and hence an optical local oscillator (OLO) source is used. A full duplex system is designed by utilising the same OLO. The phase noise in CD system is logically cancelled using digital signal processing techniques. 10 Gb/s 16-QAM at 5.5 GHz, 10 Gb/s 2-QAM at 2.5 GHz , 5 Gb/s QPSK at 5.5 Ghz and 10 Gb/s 4-QAM at 7.5 GHz are transmitted simultaneously over 25 km optical fiber(OF). It is analysed that any coherent RoF system can be designed to a full duplex system with acceptable log(BER) and error vector magnitude(EVM) values. The minimum values of log(BER) values obtained for 16-QAM, QPSK, 2-QAM and 4-QAM are −10, −8, −16 and −22, respectively.
Ramsey numbers of partial order graphs (comparability graphs) and implications in ring theory
Authors: Badawi Ayman , Rissner Roswitha 
Published: January 2021

Abstract
For a partially ordered set

(A,\le )

, let

{G}_{A}

be the simple, undirected graph with vertex set A such that two vertices

a\ne b\in A

are adjacent if either

a\le b

or

b\le a

. We call

{G}_{A}

the partial order graph or comparability graph of A. Furthermore, we say that a graph G is a partial order graph if there exists a partially ordered set A such that

G={G}_{A}

. For a class

{\mathcal{C}}

of simple, undirected graphs and n,

m\ge 1

, we define the Ramsey number

{ {\mathcal R} }_{{\mathcal{C}}}(n,m)

with respect to

{\mathcal{C}}

to be the minimal number of vertices r such that every induced subgraph of an arbitrary graph in

{\mathcal{C}}

consisting of r vertices contains either a complete n-clique

{K}_{n}

or an independent set consisting of m vertices. In this paper, we determine the Ramsey number with respect to some classes of partial order graphs. Furthermore, some implications of Ramsey numbers in ring theory are discussed.
Blow-up analyses in nonlocal reaction diffusion equations with time-dependent coefficients under Neumann boundary conditions
Authors: Tian Huimin , Zhang Lingling 
Published: January 2021

Abstract
In this paper, the blow-up analyses in nonlocal reaction diffusion equations with time-dependent coefficients are investigated under Neumann boundary conditions. By constructing some suitable auxiliary functions and using differential inequality techniques, we show some sufficient conditions to ensure that the solution

u
(
x
,
t
)

u(x,t)

blows up at a finite time under appropriate measure sense. Furthermore, an upper and a lower bound on blow-up time are derived under some appropriate assumptions. At last, two examples are presented to illustrate the application of our main results.
The logarithmic mean of two convex functionals
Authors: Raïssouli Mustapha , Furuichi Shigeru 
Published: January 2021

Abstract
The purpose of this paper is to introduce the logarithmic mean of two convex functionals that extends the logarithmic mean of two positive operators. Some inequalities involving this functional mean are discussed as well. The operator versions of the functional theoretical results obtained here are immediately deduced without referring to the theory of operator means.
S-shaped connected component of positive solutions for second-order discrete Neumann boundary value problems
Authors: Miao Liangying , Liu Jing , He Zhiqian 
Published: January 2021

Abstract
By using the bifurcation method, we study the existence of an S-shaped connected component in the set of positive solutions for discrete second-order Neumann boundary value problem. By figuring the shape of unbounded connected component of positive solutions, we show that the Neumann boundary value problem has three positive solutions suggesting suitable conditions on the weight function and nonlinearity.
Ramanujan’s function k(τ)=r(τ)r
2(2τ) and its modularity
Authors: Lee Yoonjin , Park Yoon Kyung 
Published: January 2021

Abstract
We study the modularity of Ramanujan’s function

k
(
τ
)
=
r
(
τ
)

r

2

(
2
τ
)

k(\tau )=r(\tau ){r}^{2}(2\tau )

, where

r
(
τ
)

r(\tau )

is the Rogers-Ramanujan continued fraction. We first find the modular equation of

k
(
τ
)

k(\tau )

of “an” level, and we obtain some symmetry relations and some congruence relations which are satisfied by the modular equations; these relations are quite useful for reduction of the computation cost for finding the modular equations. We also show that for some

τ

\tau

in an imaginary quadratic field, the value

k
(
τ
)

k(\tau )

generates the ray class field over an imaginary quadratic field modulo 10; this is because the function k is a generator of the field of the modular function on

Γ

1

(
10
)

{{\mathrm{\Gamma}}}_{1}(10)

. Furthermore, we suggest a rather optimal way of evaluating the singular values of

k
(
τ
)

k(\tau )

using the modular equations in the following two ways: one is that if

j
(
τ
)

j(\tau )

is the elliptic modular function, then one can explicitly evaluate the value

k
(
τ
)

k(\tau )

, and the other is that once the value

k
(
τ
)

k(\tau )

is given, we can obtain the value

k
(
r
τ
)

k(r\tau )

for any positive rational number r immediately.
New (p,q)-estimates for different types of integral inequalities via (α,m)-convex mappings
Authors: Kalsoom Humaira , Latif Muhammad Amer , Rashid Saima , Baleanu Dumitru , Chu Yu-Ming 
Published: January 2021

AbstractIn the article, we present a new(p,q)(p,q)-integral identity for the first-order(p,q)(p,q)-differentiable functions and establish several new(p,q)(p,q)-quantum error estimations for various integral inequalities via(α,m)(\alpha ,m)-convexity. We also compare our results with the previously known results and provide two examples to show the superiority of our obtained results.
Approximation properties of tensor norms and operator ideals for Banach spaces
Authors: Kim Ju Myung 
Published: January 2021

Abstract
For a finitely generated tensor norm

α

\alpha

, we investigate the

α

\alpha

-approximation property (

α

\alpha

-AP) and the bounded

α

\alpha

-approximation property (bounded

α

\alpha

-AP) in terms of some approximation properties of operator ideals. We prove that a Banach space X has the

λ

\lambda

-bounded

α

p
,
q

{\alpha }_{p,q}

-AP

(
1
≤
p
,
q
≤
∞
,
1
/
p
+
1
/
q
≥
1
)

(1\le p,q\le \infty ,1/p+1/q\ge 1)

if it has the

λ

\lambda

-bounded

g

p

{g}_{p}

-AP. As a consequence, it follows that if a Banach space X has the

λ

\lambda

-bounded

g

p

{g}_{p}

-AP, then X has the

λ

\lambda

-bounded

w

p

{w}_{p}

-AP.
Skew-symmetric and essentially unitary operators via Berezin symbols
Authors: Altwaijry Najla , Garayev Mubariz , Guediri Hocine , Baazeem Amani 
Published: January 2021

AbstractWe characterize skew-symmetric operators on a reproducing kernel Hilbert space in terms of their Berezin symbols. The solution of some operator equations with skew-symmetric operators is studied in terms of Berezin symbols. We also studied essentially unitary operators via Berezin symbols.
Results on analytic functions defined by Laplace-Stieltjes transforms with perfect ϕ-type
Authors: Liu Simin , Xu Hongyan , Cui Yongqin , Gong Pan 
Published: January 2021

Abstract
In this paper, we introduce the concept of the perfect

ϕ

\phi

-type to describe the growth of the maximal molecule of Laplace-Stieltjes transform by using the more general function than the usual. Based on this concept, we investigate the approximation and growth of analytic functions

F
(
s
)

F(s)

defined by Laplace-Stieltjes transforms convergent in the half plane and obtain some results about the necessary and sufficient conditions on analytic functions

F
(
s
)

F(s)

defined by Laplace-Stieltjes transforms with perfect

ϕ

\phi

-type, which are some generalizations and improvements of the previous results given by Kong [On generalized orders and types of Laplace-Stieltjes transforms analytic in the right half-plane, Acta Math. Sin. 59A (2016), 91–98], Singhal and Srivastava [On the approximation of an analytic function represented by Laplace-Stieltjes transformations, Anal. Theory and Appl. 31 (2015), 407–420].