bluuebunny/crossref_metadata_2025_split huggingface dataset:
Monitoring enlarged dental follicles: case report and literature review of an unusual presentation of a unicystic ameloblastoma
Authors: Long Lily , Matharu Jasveen , Sah Sunil 
Published: July 2021

An ameloblastoma is a benign, yet locally aggressive odontogenic tumour. The vast majority (80%) of ameloblastomas arise in the mandible, and unicystic ameloblastomas are commonly found in relation to an unerupted lower third molar. We present the case of a 39-year-old patient with an incidental finding of an enlarged dental follicle around an unerupted lower third molar that progressed to an extensive unicystic ameloblastoma. This ameloblastoma was decompressed and marsupialized before enucleation to reduce the risk of pathological fracture due to the extensive size of the tumour. CPD/Clinical Relevance: The case is relevant to general dental practitioners when considering monitoring dental follicles of unerupted teeth because the enlarged dental follicle described progressed to an extensive odontogenic tumour.
Point-of-Care (POC) diagnostics for coronavirus disease 2019 (COVID-19) and their potential impact on dentistry
Authors: Samaranayake Lakshman , Kinariwala Niraj 
Published: July 2021

It is clear that the coronavirus disease 2019 (COVID-19) pandemic, due to the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) will be with us for the foreseeable future, possibly entrenched as an endemic infection. This poses a grave threat for clinical dental practice as asymptomatic (viral) carriers unknowing of their status, may attend for treatment with the possibility of resultant disease spread to non-immune individuals in the clinic. Even if one is immune through vaccination, the temporal waning of protective antibodies may lead to mild–moderate variant-induced infection, as shown in a number of recent studies. Hence, it is likely that rapid and accurate identification of COVID-19 patients at the point-of-care (POC), that is in the clinic or during the pre-attendance period, will be a critical imperative in the foreseeable future, as a secondary safeguard, in addition to successful vaccination. There are now an array of POC diagnostic tests to detect SARS-CoV-2, and here we summarize their salient features, and the potential utility as an infection control measure in dentistry. CPD/Clinical Relevance: To describe the currently available POC diagnostic tests for COVID-19, and their utility as a critical infection control measure during dental care delivery in the immediate post-pandemic period.
On Weak Super Ricci Flow through Neckpinch
Authors: Lakzian Sajjad , Munn Michael 
Published: July 2021

Abstract
In this article, we study the Ricci flow neckpinch in the context of metric measure spaces. We introduce the notion of a Ricci flow metric measure spacetime and of a weak (refined) super Ricci flow associated to convex cost functions (cost functions which are increasing convex functions of the distance function). Our definition of a weak super Ricci flow is based on the coupled contraction property for suitably defined diffusions on maximal diffusion subspaces. In our main theorem, we show that if a non-degenerate spherical neckpinch can be continued beyond the singular time by a smooth forward evolution then the corresponding Ricci flow metric measure spacetime through the singularity is a weak super Ricci flow for a (and therefore for all) convex cost functions if and only if the single point pinching phenomenon holds at singular times; i.e., if singularities form on a finite number of totally geodesic hypersurfaces of the form {x} × 𝕊
n
. We also show the spacetime is a refined weak super Ricci flow if and only if the flow is a smooth Ricci flow with possibly singular final time.
Hölder Parameterization of Iterated Function Systems and a Self-Affine Phenomenon
Authors: Badger Matthew , Vellis Vyron 
Published: July 2021

Abstract
We investigate the Hölder geometry of curves generated by iterated function systems (IFS) in a complete metric space. A theorem of Hata from 1985 asserts that every connected attractor of an IFS is locally connected and path-connected. We give a quantitative strengthening of Hata’s theorem. First we prove that every connected attractor of an IFS is (1/s)-Hölder path-connected, where s is the similarity dimension of the IFS. Then we show that every connected attractor of an IFS is parameterized by a (1/ α)-Hölder curve for all α > s. At the endpoint, α = s, a theorem of Remes from 1998 already established that connected self-similar sets in Euclidean space that satisfy the open set condition are parameterized by (1/s)-Hölder curves. In a secondary result, we show how to promote Remes’ theorem to self-similar sets in complete metric spaces, but in this setting require the attractor to have positive s-dimensional Hausdorff measure in lieu of the open set condition. To close the paper, we determine sharp Hölder exponents of parameterizations in the class of connected self-affine Bedford-McMullen carpets and build parameterizations of self-affine sponges. An interesting phenomenon emerges in the self-affine setting. While the optimal parameter s for a self-similar curve in ℝ
n
is always at most the ambient dimension n, the optimal parameter s for a self-affine curve in ℝ
n
may be strictly greater than n.
The prostate health index and the percentage of [-2]proPSA maintain their diagnostic performance when calculated with total and free PSA from different manufacturers
Authors: Garrido Manuel M. , Ribeiro Ruy , Pinheiro Luís C. , Holdenrieder Stefan , Guimarães João T. 
Published: July 2021

Abstract

Objectives
To evaluate the diagnostic performance of the prostate health index (PHI) and of the percentage of [-2]proPSA (%[-2]proPSA) calculated with total and free PSA from non-Beckman Coulter manufacturers (Roche and Abbott), and compare it with the fully Beckman Coulter [-2]proPSA derivatives.

Methods
In this study, 237 men (PSA: 2–10 μg/L) scheduled for prostate biopsy were enrolled. %[-2]proPSA and PHI were calculated with total and free PSA from three manufacturers. Beckman Coulter PSA and [-2]proPSA were performed on the Access 2 analyzer (Hybritech calibration). Roche PSA was performed on the cobas e411 and the Abbott PSA on the Architect i2000sr. Statistical analysis was performed, considering prostate cancer (PCa) as the outcome.

Results
Univariate analysis showed that all indices were predictors of cancer, irrespective of the manufacturer (p<0.001). The AUC was similar for all manufacturers, both for %[-2]proPSA (Beckman Coulter: 0.756; Roche: 0.770; Abbott: 0.756) and PHI (Beckman Coulter: 0.776; Roche: 0.785; Abbott: 0.778). When considering the cutoffs that allowed 90% sensitivity, [-2]proPSA derivatives calculated with Roche and Abbott PSA had similar specificities and predictive values when compared to Beckman Coulter. The percentage of missed cancers (8–9%) was the same between manufacturers. The percentage of spared biopsies was significantly higher with Roche’s PHI (21.0%) and Abbott’s PHI (20.6%) than with Beckman Coulter’s PHI (17.2%).

Conclusions
In the PSA range between 2 and 10 μg/L, [-2]proPSA derivatives maintain their diagnostic performance in PCa detection when calculated with PSA from Roche and Abbott. This can lead to a broader implementation of these indices in clinical laboratories worldwide.
Detecting departures from meta-ellipticity for multivariate stationary time series
Authors: Bücher Axel , Jaser Miriam , Min Aleksey 
Published: July 2021

Abstract
A test for detecting departures from meta-ellipticity for multivariate stationary time series is proposed. The large sample behavior of the test statistic is shown to depend in a complicated way on the underlying copula as well as on the serial dependence. Valid asymptotic critical values are obtained by a bootstrap device based on subsampling. The finite-sample performance of the test is investigated in a large-scale simulation study, and the theoretical results are illustrated by a case study involving financial log returns.
Comparison of the effect of Ceratonia siliqua L. fruit oral capsule and vitamin E on semen parameters in men with idiopathic infertility: a triple-blind randomized controlled clinical trial
Authors: Sanagoo Sima , Farshbaf-Khalili Azizeh , Asgharian Parina , Hazhir Samad , Oskouei Behnaz Sadeghzadeh 
Published: July 2021

Abstract

Objectives
To compare the effect of oral Ceratonia siliqua (Carob) and vitamin E on sperm parameters in idiopathic infertile men.

Methods
In this triple-blind randomized controlled trial study, fifty 20–45-year-old infertile men with idiopathic abnormal sperm parameters were selected among men referring to the infertility clinic of Al Zahra-Iran Hospital, and randomly allocated into two groups. The first group received Carob capsules, 500 mg, and the second group received vitamin E capsules three times a day for 90 days. The primary outcomes of this study were the sperm parameters (count, motility, and morphology).

Results
After the intervention, the mean of sperm count increased from 49.08 to 60.22 million/mL in the carob vs. it increased from 47.64 to 58.88 million/mL in the vitamin E group (adjusted mean difference (aMD)=1.124 million/ml, 95% CI: −12.892 to 15.141). The mean sperm motility increased from 45.90 to 52.90% in the carob group but decreased from 55.23 to 38.10% in the vitamin E group (aMD=17.22%, 95% CI: 8.53 to 25.92). The mean sperms with normal morphology increased from 11.52 to 67.05% in the carob, and from 10.20 to 77.47% in the vitamin E group (aMD=−10.88%, 95% CI: −22.30 to 0.536). There was no serious side effect during the treatment course.

Conclusions
Taking 1,500 mg oral dose of Carob capsule per day for 90 days improved sperm motility but had no significant effect for improving morphology and count comparing to vitamin E capsule.
Toward agent-based LSB image steganography system
Authors: Baothman Fatmah Abdulrahman , Edhah Budoor Salem 
Published: July 2021

Abstract
In a digital communication environment, information security is mandatory. Three essential parameters used in the design process of a steganography algorithm are Payload, security, and fidelity. However, several methods are implemented in information hiding, such as Least Significant Bit (LBS), Discrete Wavelet Transform, Masking, and Discrete Cosine Transform. The paper aims to investigate novel steganography techniques based on agent technology. It proposes a Framework of Steganography based on agent for secret communication using LSB. The most common image steganography databases are explored for training and testing. The methodology in this work is based on the statistical properties of the developed agent software using Matlab. The experiment design is based on six statistical feature measures, including Histogram, Mean, Standard deviation, Entropy, Variance and Energy. For steganography, an Ensemble classifier is used to test two scenarios: embedding a single language message and inserting bilingual messages. ROC Curve represents the evaluation metrics. The result shows that the designed agent-based system with 50% training/testing sample set and 0.2 Payload can pick out the best cover image for the provided hidden message size to avoid visual artifact.
Kinship terminologies reveal ancient contact zone in the Hindu Kush
Authors: Liljegren Henrik 
Published: July 2021

AbstractThe Hindu Kush, or the mountain region of northern Pakistan, north-eastern Afghanistan and the northern-most part of the Indian-administered Kashmir region, is home to approximately 50 languages belonging to six different genera: Indo-Aryan, Iranian, Nuristani, Sino-Tibetan, Turkic and the isolate Burushaski. Areality research on this region is only in its early stages, and while its significance as a convergence area has been suggested by several scholars, only a few, primarily phonological and grammatical, features have been studied in a more systematic fashion. Cross-linguistic research in the realms of semantics and lexical organization has been given considerably less attention. However, preliminary findings indicate that features are geographically bundled with one another, across genera, in significant ways, displaying semantic areality on multiple levels throughout the region or in one or more of its sub-regions. The present study is an areal-typological investigation of kinship terms in the region, in which particular attention is paid to a few notable polysemy patterns and what appears to be a significant geographical clustering of these. Comparisons are made between the geographical distribution of such patterns and those of some other linguistic features as well as with relevant non-linguistic factors related to shared cultural values or identities and a long history of small-scale cross-community interaction in different parts of the region.
Asymptotic stability of the time-changed stochastic delay differential equations with Markovian switching
Authors: Zhang Xiaozhi , Zhu Zhangsheng , Yuan Chenggui 
Published: July 2021

Abstract
The aim of this work is to study the asymptotic stability of the time-changed stochastic delay differential equations (SDDEs) with Markovian switching. Some sufficient conditions for the asymptotic stability of solutions to the time-changed SDDEs are presented. In contrast to the asymptotic stability in existing articles, we present the new results on the stability of solutions to time-changed SDDEs, which is driven by time-changed Brownian motion. Finally, an example is given to demonstrate the effectiveness of the main results.
The price of immersion: language learners as a cheap workforce in Malta’s voluntourism industry
Authors: Schedel Larissa Semiramis 
Published: July 2021

Abstract
This contribution treats “language immersion” as a linguistic ideology and explores narratives, practices, and subjectivities pertinent to that notion in the context of language-motivated voluntourism. Voluntourism programs offer short-term sojourns abroad, which combine voluntary work with holidays while promising “immersion” as an efficient alternative to classroom language learning. In the Mediterranean island state of Malta, whose population is mostly bilingual in English and Maltese, voluntourism has become an attractive product for the booming English language travel industry. Since there is a lack of critical sociolinguistic and second language acquisition research on the language learning trajectories of voluntourists, this piece examines the promise of immersion through the example of a hostel that figures as a workplace. Drawing on ethnographic data, it investigates how learning English through immersion while working abroad is imagined and promoted, whether or not it occurs, and what gains (linguistic or otherwise) it generates and for whom. The article argues that the voluntourism industry appropriates the discourse of immersion to responsibilize English learners for their linguistic self-skilling, thereby constituting them as neoliberal subjects that can easily be exploited as a cheap workforce.
Manuscript Illumination in 19th-century Italy. Material Analysis of Two Partial Copies from the Squarcialupi Codex
Authors: Bosch Sebastian , Janke Andreas 
Published: July 2021

Abstract
The illuminations in two Italian manuscripts are still a mystery today. Both manuscripts were based fully or partly on the Florentine Squarcialupi Codex (Florence, Biblioteca Medicea Laurenziana, Med. Pal. 87) dating from around 1410/15. With the help of a multi-analytical, non-destructive approach employing mobile instrumentation (XRF spectroscopy, visible reflectance spectroscopy and infrared reflectography), we examined the manuscripts Toronto, Thomas Fisher Rare Book Library, MSS 09700 and Düsseldorf, Kunstpalast, Inv. K 1925-67 for the first time with regard to their production processes. The identification of modern pigments allows them to be contextualized in illumination practices of the 19th century. Manuals of that time provide a wealth of information on specific illumination practices and the availability of writing and painting materials, which correlates with the actual artefacts.
Active vibration suppression of wind turbine blades integrated with piezoelectric sensors
Authors: Lee Sang-Lae 
Published: July 2021

Abstract
As the wind turbine size gets larger, the optimal design of blades, which is a major source of energy for the wind turbines and also the cause of loads, is becoming more important than anything else. Therefore, reducing the load on the blade should be the top priority in designing a blade. In this article, we studied the vibration control of the stiffened wind blades subjected to a wind load with piezoelectric sensors and actuators to mitigate fluctuations in loading and adding damping to the blade. The model is a laminated composite blade with a shear web and the PZT piezomaterial layers embedded on the top and bottom surfaces act as a sensor and actuator, respectively. A uniformly distributed external wind load is assumed over the entire plate surface for simplicity. The first-order shear deformation (FSDT) theory is adopted, and Hamilton’s principle is used to derive the finite element equation of motion. The modal superposition technique and the Newmark-

β

\beta

method are used in numerical analysis to calculate the dynamic response. Using the constant gain negative velocity feedback control algorithm, vibration characteristics and transient responses are compared. Furthermore, vibration control at various locations of the shear webs subjected to an external load is discussed in detail. Through various calculation results performed in this study, this article proposes a method of designing a blade that can reduce the load by actively responding to the external load acting on the wind turbine blade.
On interpolative Hardy-Rogers contractive of Suzuki type mappings
Authors: Yeşilkaya Seher Sultan 
Published: July 2021

AbstractIn this paper, we obtain a fixed point theoremω-ψ-interpolative Hardy-Rogers contractive of Suzuki type mappings. In the following, we present an example to illustrate the new theorem is applicable. Subsequently, some results are given. These results generalize several new results present in the literature.
Antibacterial activity of some chemical constituents from Trichilia prieuriana (Meliaceae)
Authors: Pagna Julio Issah Mawouma , Mbekou Ines Michèle Kanko , Tsamo Armelle Tontsa , Mkounga Pierre , Frese Marcel , Stammler Hans-Georg , Fekam Fabrice Boyom , Lenta Bruno Ndjakou , Sewald Norbert , Nkengfack Augustin Ephrem 
Published: July 2021

Abstract
The chemical study of hydroethanolic extracts from different parts of Trichilia prieuriana (Meliaceae) led to the isolation and identification of 22 compounds: 2β,3β,4β-trihydroxypregnan-16-one (1), prieurianin (2), flindissone (3), deoxyflindissone (4), picraquassin E (5), ursolic acid (6), 3β-acetoxy-11α-hydroxyurs-12-en (7), 3β-acetoxy-urs-12-en-11-one (8), 3β-acetoxy-β-amyrin (9), friedelin-3-ol (10), 3-oxo, friedelin (11), 3-oxo, fridelin-28-ol (12), oleanolic acid (13), hederagenin (14), mixture of stigmasterol (15), β-sitosterol (16), β-sitosterol-3-O-β-glucopyranoside (17) and stigmasterol-3-O-β-glucopyranoside (18), erythrodiol (19), scopoletin (20), 4-hydroxy-3,5-dimethoxybenzoic acid (21) and shikimic acid (22). The absolute configurations and crystal structures of compounds 1 and 2 are reported herein for the first time. Crude extracts, fractions and isolated compounds were evaluated for their antibacterial activities against nine bacterial strains. Crude extracts from the root wood of T. prieuriana exhibited good antibacterial potency with minimal inhibitory concentration (MIC) values ranging from 31.25 to 500 µg mL−1 on the test bacteria. The ethyl acetate fraction from root wood and n-hexane-ethyl acetate (3:1) fraction from leaves showed a moderate antibacterial activity with MIC value of 250 μg mL−1 on all test bacteria. Isolated compounds exhibited significant antibacterial activity with MIC values ranging from 4.09 to 71.8 µm. Compounds 3, 6 and 7 were the most active with a broad spectrum of activities.
Preparation and characterization of vitamin D microemulsions using two-component surface-active stabilizer system
Authors: Nourzadeh Zahra , Anarjan Navideh , Ebrahimzadeh Rajaei Gholamreza , Jafarizadeh-Malmiri Hoda 
Published: July 2021

Abstract
Vitamin D, like other functional lipid bioactive compounds, t suffers from less structural stability, poor water solubility and consequently less bioavailability and cellular uptake. Preparation of vitamin D microemulsions is one of the solutions for the above problems. Thus, in the present study, vitamin D microemulsions were prepared using various one/two-component stabilizer systems, namely, Tween 20 and sodium caseinate in various proportions. The effects of stabilizer components proportions on characteristics of gained vitamin D microemulsions were evaluated using a two-component mixture design of experiment. Therefore, various polynomial models were proposed in order to predict the characteristics of produced microemulsions. According to the optimization analysis, the vitamin D microemulsions stabilized by a stabilizer system composed of 70% Tween 20 and 30% sodium caseinate could produce the most desirable microemulsions with minimum mean particle size, polydispersity, and maximum zeta potential, transparency and vitamin D content. The produced vitamin D microemulsions showed acceptable chemical and good physical stabilities, which can be incorporated easily in water-based food and pharmaceutical formulations.
Improvement of Knowledge and Attitudes on Tuberculosis Patients with Poster Calendar and Leaflet
Authors: Siregar Putra Apriadi , Ashar Yulia Khairina , Hasibuan Reni Ria Armayani , Nasution Fauziah , Hayati Fitri , Susanti Nofi 
Published: July 2021

Background: Leaflet and poster calendars are one medium to provide health education to patients with pulmonary tuberculosis on the treatment of pulmonary Tuberculosis. The purpose of this research for media want to effectivity leaflet and poster calendars on health promotion to improve the knowledge and attitudes of pulmonary tuberculosis treatment at the Martubung Public Health Center.
Methods: Research is a quasi-experimental design with pre-test and post-test group. The population in this study were all patients with pulmonary tuberculosis treatment in Martubung Public Health Center and analyzed with the wilcoxon test.
Results: The results of the study using the wilcoxon test showed that the leaflet could increase the pretest value of 10 knowledge to 11.03 (p <0.001) and the attitude of having a pretest value of 41.77 to 45.7 (p <0.001). The wilcoxon test results show that the poster calendar can increase the pretest knowledge value from 8.7 to 11.97 (p <0.001) and the pretest attitude value from 43.7 to 50.27 (p <0.001).
Conclusions: The media are most effective in improving knowledge and attitudes about the treatment of patients with pulmonary tuberculosis disease in Martubung Public Health Center is media poster calendar from the average value based on the pre-test and post-test conducted.