bluuebunny/crossref_metadata_2025_split huggingface dataset:
Time to negative PCR in various disease categories of COVID-19 infection in Pakistani population
Authors: Toori Kaleem Ullah , Chaudhry Asma , Qureshi Muhammad Arsalan 
Published: November 2021

Objectives: To identify association of epidemiological characteristics, presence of underlying pre-morbidities and disease severity with time to first negative PCR in Corona virus disease 2019.
Methods: Total 842 Corona Virus Real Time Polymerase-Chain-Reaction positive patients were included in this cross-sectional study. Patients were admitted to Department of Medicine at KRL Hospital Islamabad from April to August 2020. Age, gender, symptoms, pre-morbidities and disease severity were recorded. Outcome (recovered versus died) was documented. World Health Organization categories to classify disease severity (asymptomatic, mild, moderate and severe) were used. Time to negative PCR was documented as time between first positive PCR to first negative PCR.
Results: The mean age of patients was 39.04 ± 11.32 years with 99.8% being males. Majority of patients (78.4%) were asymptomatic. Amongst symptoms, fever was the most common symptom. Diabetes mellitus and hypertension were the most commonly recorded co-morbidity. Mean time to negative PCR was 8.8 ± 3.1 days. A large proportion of patients recovered (99.9%). Significant positive correlation (p value < 0.05) was found between age, gender, presence of underlying pre-morbidities and disease severity categories with time to first negative PCR.
Conclusion: The underlying epidemiological factors, pre-morbidities and disease severity are associated with time to negative PCR and hence affect frequency of recovery samples.
doi: https://doi.org/10.12669/pjms.38.1.4476
How to cite this:Toori KU, Chaudhry A, Qureshi MA. Time to negative PCR in various disease categories of COVID-19 infection in Pakistani population. Pak J Med Sci. 2022;38(1):243-247. doi: https://doi.org/10.12669/pjms.38.1.4476
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Use of Rose Bengal, Methylene blue and Curcumin Photosensitizers activated using light emitting diode on post space disinfection bonded to fiber post: An assessment of extrusion bond strength
Authors: Niazi Fayez Hussain , Qamar Zeeshan , Noushad Mohammed , Muhareb Abdullah Khaled Bin 
Published: November 2021

Objectives: To evaluate the effect of Rose Bengal (RB), methylene blue (MB) and curcumin used as a canal disinfectant on the extrusion bond strength (EBS) of FRCP (fiber reinforced composite resin) with canal dentin.
Methods: The present invitro study was completed in 90 days approved by Riyadh Elm University. Forty premolars were extracted disinfected and decoronated. Mechanochemical preparation was done of canal space using 10k file widening canals sequentially with a 25K file with constant saline irrigation. Canal was dried condensed with gutta percha and sealer. Post space was prepared using peso reamer. Based on canal disinfection samples were divided into four groups. Group-1 MBP+17% EDTA, Group-2 RBP +17% EDTA, Group-3 Curcumin+17% EDTA and Group-4 5.25% NaOCl +17% EDTA. Following disinfection, the canal space of all specimens was washed with 17% EDTA for 120 sec. Post was cemented in canal space and cured. Specimens were placed on Universal testing machine (UTM) for EBS. The type of bond failure was evaluated using stereomicroscope. ANOVA and Tukey multiple comparison test was used to compare means.
Results: Cervical third of Group-3 in which samples were disinfected with CP+17% EDTA displayed the maximum EBS (8.69±1.32 MPa). Whereas, the lowest EBS (3.30±0.54 MPa) was exhibited by the apical third of Group-4, where 5.25% NaOCl +17% EDTA was used as a canal disinfectant. The intragroup comparison demonstrated a declining trend of EBS from cervical to apical third in all investigated groups.
Conclusion: Root canal dentin treated with different PS (MBP, CP, and RBP) demonstrated better EBS than the conventional disinfecting regime (NaOCl +17% EDTA). CP and RBP displayed better EBS than MBP.
doi: https://doi.org/10.12669/pjms.38.1.4780
How to cite this:Niazi FH, Qamar Z, Noushad M, Khaled Bin Muhareb A. Use of Rose Bengal, Methylene blue and Curcumin Photosensitizers activated using light emitting diode on post space disinfection bonded to fiber post: An assessment of extrusion bond strength. Pak J Med Sci. 2022;38(1):34-39. doi: https://doi.org/10.12669/pjms.38.1.4780
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The role of Emergency Departments for Antimicrobial stewardship in COVID-19 Pandemic; the time is now
Authors: Ismail Madiha , Kapadia Nazir Najeeb , Usman Sara 
Published: November 2021

doi: https://doi.org/10.12669/pjms.38.1.5107
How to cite this:Ismail M, Kapadia NN, Usman S. The role of Emergency Departments for Antimicrobial stewardship in COVID-19 Pandemic; the time is now. Pak J Med Sci. 2022;38(1):329. doi: https://doi.org/10.12669/pjms.38.1.5107
Identifying periodontitis risk factors through a retrospective analysis of 80 cases
Authors: Guan Jing , Zhang Dong , Wang Cailing 
Published: November 2021

Objectives: To investigate periodontitis risk factors and to establish a reference framework for identifying factors that place individuals at greater risk for periodontitis.
Methods: Clinical data from 80 periodontitis patients admitted in the Department of Stomatology at Hebei Provincial People’s Hospital and treated between March 2020 and March 2021 were retrospectively analyzed.
Results: Univariate analysis showed that lower daily brushing frequencies, decreased tooth brushing duration, decreased scaling frequency, dietary habits, smoking and drinking, genetic factors, diabetes, hypertension, and obesity were more prevalent among periodontitis patients than healthy controls. Multivariate binary logistic analysis showed that daily brushing frequency, routine scaling, smoking, drinking, heredity, diabetes, hypertension, and obesity were all risk factors for periodontitis.
Conclusions: There are many risk factors for periodontitis. Clinicians need to be aware of these factors for early detection and treatment of the disease.
doi: https://doi.org/10.12669/pjms.38.1.5205
How to cite this:Guan J, Zhang D, Wang C. Identifying periodontitis risk factors through a retrospective analysis of 80 cases. Pak J Med Sci. 2022;38(1):293-296. doi: https://doi.org/10.12669/pjms.38.1.5205
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Limitations in the Use of Social Network Analysis Methods in Marketing Project Management
Authors: Akimova E. 
Published: November 2021

One of the trends of the labor market is project management skills. In such conditions, the professional education of a project manager becomes especially relevant since it is often impossible to completely replace it with work experience.
One of the most vital areas for project success is communication management. Nevertheless, in this area, unlike many others, tools that allow objectively analyzing the quality of communications are not used. Relatively recently, a method of social network analysis (SNA) has appeared, which enables, among other things, analyzing communications in projects. Researchers wrote about the applicability of this methodology in project management. This article will identify some of the limitations in the use of SNA in project management.
A Fast Vertex Weighting-Based Local Search for Finding Minimum Connected Dominating Sets
Authors: Wu Xinyun , Lü Zhipeng , Glover Fred 
Published: November 2021

The minimum connected dominating set (MCDS) problem consists of selecting a minimum set of vertices from an undirected graph, such that each vertex not in this set is adjacent to at least one of the vertices in it, and the subgraph induced by this vertex set is connected. This paper presents a fast vertex weighting (FVW) algorithm for solving the MCDS problem, which integrates several distinguishing features, such as a vertex weighting-based local search with tabu and perturbation strategies to help the search to jump out of the local optima, as well as a search space reduction strategy to improve the search efficiency. Computational experiments on four sets of 112 commonly used public benchmark instances, as well as 15 newly introduced sparse instances, show that FVW is highly competitive compared with the state-of-the-art algorithms in the literature despite its simplicity. FVW improves the previous best-known results for 20 large public benchmark instances while matching the best-known results for all but 2 of the remaining ones. Several ingredients of FVW are investigated to demonstrate the importance of the proposed ideas and techniques.Summary of Contribution: As a challenging classical NP-hard problem, the minimum connected dominating set (MCDS) problem has been studied for decades in the areas of both operations research and computer science, although there does not exist an exact polynomial algorithm for solving it. Thus, the new breakthrough on this classical NP-hard problem in terms of the computational results on classical benchmark instances is significant. This paper presents a new fast vertex weighting local search for solving the MCDS problem. Computational experiments on four sets of 112 commonly used public benchmark instances show that fast vertex weighting (FVW) is able to improve the previous best-known results for 20 large instances while matching the best-known results for all but 2 of the remaining instances. Several ingredients of FVW are also investigated to demonstrate the importance of the proposed ideas and techniques.
Does self-reported chronic pain influence savoring of aesthetic experiences?
Authors: Weigand Rosalie , Moosmayer Annika , Jacobsen Thomas 
Published: November 2021

Background
Aesthetic experiences elicit a wide range of positive emotions and have a positive impact on various health outcomes. In this context, savoring refers to a cognitive form of emotion regulation used to maintain and extend positive emotional experiences and is considered to contribute to health and well-being. Chronic pain has been linked to reduced reward-seeking behavior. This is the first study to investigate the relationship between self-reported chronic pain and savoring.

Methods
We conducted an anonymous cross-sectional survey in a large non-clinical sample (opera, theater, and cabaret visitors; n = 322). The variables were assessed with a two-item-questionnaire.

Results
Self-reported chronic pain was significantly negatively correlated with savoring (r = -.547)

Conclusion
Altogether, this result helps to develop a better understanding of the effects of chronic pain in humans and to shed light on state-dependent differences in aesthetic experiences.
Specifics of Construction of Measuring Transducers with Logometric Output Based on Interconnected Piezoresonators
Authors: Sedalishchev V.N. , Sergeeva Ya. S. , Strahatov D.O. , Pronin S.P. 
Published: November 2021

The paper presents the results of simulation modeling of measuring devices. The simulation modeling is based on the use of coupled oscillations in systems with two degrees of freedom. Methods of controlling the parameters of the oscillatory system of the converter based on interconnected piezoresonators are considered. A comparative assessment of the metrological characteristics of possible variants of piezoresoanase sensors with logometric (differential) output is conducted.
It is shown that when the Q-factor of the oscillatory system of the primary converter is affected, a higher sensitivity of the measuring process is provided by the control of the active resistance of the coupling element replacement circuit between the resonators. In this case, it is proposed to use the ratio of the oscillation amplitudes of one of the interconnected resonators measured at the frequencies of common-mode and antiphase oscillations in the system as the output signal of the sensor. When the frequency-setting parameters of the converter are affected, it is recommended to use the ratio of the oscillation amplitudes of two interconnected piezoresonators measured at one of the normal frequencies of synchronized oscillations in the system to generate the output signal.
There are several advantages of measuring devices of this type, such as high sensitivity, simplicity of design, low cost, manufacturability, and operational applicability for harsh conditions.
Method of Equivalent Strength Conditions in Composite Structures Evaluations
Authors: Matveev A.D. 
Published: November 2021

It is important to know the error or the approximate solution when calculating the strength of elastic composite structures (bodies) using the finite element method (FEM). To construct a sequence of solutions according to the FEM is necessary for the evaluation of the approximation error. It involves the grinding procedure for discrete models. The implementation of the grinding procedure for basic models that take into account the inhomogeneous, micro-homogeneous structures of bodies within the microapproach requires ample computer resources.
This paper proposes a method of equivalent strength conditions (MESC) to calculate the static strength of elastic bodies with a non-uniform, microuniform regular structure. The calculation of composite bodies strength according to the MESC is reduced to the calculation of isotropic homogeneous bodies strength using equivalent strength conditions. Adjusted equivalent strength conditions are used in the numerical implementation of the MESC. They take into account the error of the approximate solutions. If a set of loads is specified for a composite body, then generalized equivalent strength conditions are applied. The FEM-based calculation of composite bodies strength that follows the MESC using multigrid finite elements requires 103 ÷ 105 times less computer memory than a similar calculation using ground basic models of composite bodies. The provided example of strength calculation for a beam with an inhomogeneous regular fiber structure using the MESC shows its high efficiency. The main MESC implementation procedures are outlined.
Eine neue Mitte für die Technische Hochschule Nürnberg
Authors: Knab Christine 
Published: November 2021

Zusammenfassung
Die Bibliothek der Technischen Hochschule Nürnberg Georg Simon Ohm blickt auf eine wechselvolle Baugeschichte zurück. Mit dem Neubau eines Informationszentrums im Herzen des Hochschulcampus konnte nach einer langen Planungs- und Bauzeit 2020 ein Gebäude bezogen werden, das erstmals für die Bedürfnisse einer modernen Hochschulbibliothek konzipiert wurde.
IIIF Reloaded: Die neuen Digitalen Sammlungen der Bayerischen Staatsbibliothek
Authors: Hermann Martin , Eichinger Ralf , Niegisch Barbara 
Published: November 2021

Zusammenfassung
Das Münchener Digitalisierungszentrum (MDZ) der Bayerischen Staatsbibliothek führte in fast zwei Jahren Projektlaufzeit einen grundlegenden technologischen Relaunch seiner „Digitalen Sammlungen“ durch. Das rundum erneuerte und weitestgehend barrierefreie Angebot bietet eine optimierte Volltextsuche. Ein Großteil der Digitalisate wird im innovativen IIIF-Viewer „Mirador 3“ präsentiert, der u. a. auch eine Überblendfunktion der Volltexte über die zugehörigen Bilder ermöglicht. Die Inhalte werden frei im Internet zur Verfügung gestellt: komfortable Downloadfunktionen und öffentlich zugängliche Schnittstellen erlauben eine Nachnutzung für nicht-kommerzielle Zwecke.
Projekt Benutzungsforschung International: Beteiligung der Universitätsbibliothek der Freien Universität Berlin am Projekt „Cancelling the Big Deal“ (Ithaka S+R 2021)
Authors: Hagel Michael Dominik , Harnisch Franziska , Kowalak Mario , Wagner Cosima 
Published: November 2021

Zusammenfassung
Wie verschaffen sich Forschende Zugang zu Quellen, wenn der Zugriff auf etablierte Informationsangebote wegen Kündigung von Rahmenverträgen nicht mehr gewährleistet ist? Dieser Frage ging die qualitative Interview-Studie „Cancelling the Big Deal“ nach, die von der US-amerikanischen Not-For-Profit Forschungsagentur Ithaka S+R in Kooperation mit elf Universitätsbibliotheken in den USA und in Deutschland durchgeführt wurde. Neben der Kurzvorstellung der zentralen Ergebnisse resümiert das Team der Universitätsbibliothek der Freien Universität Berlin im folgenden auch Erfahrungen aus der Projektbeteiligung hinsichtlich der internationalen Zusammenarbeit, der Stärkung von bibliothekarischer Nutzungsforschung und der „Liaison“-Arbeit mit Forschenden.
On the geometry of lattices and finiteness of Picard groups
Authors: Eisele Florian 
Published: November 2021

Abstract
Let

(
K
,
𝒪
,
k
)

{(K,\mathcal{O},k)}

be a p-modular system with k algebraically closed and

𝒪

{\mathcal{O}}

unramified, and let Λ be an

𝒪

{\mathcal{O}}

-order in a separable K-algebra. We call a Λ-lattice L rigid if

Ext
Λ
1

⁡

(
L
,
L
)

=
0

{{\operatorname{Ext}}^{1}_{\Lambda}(L,L)=0}

, in analogy with the definition of rigid modules over a finite-dimensional algebra.
By partitioning the Λ-lattices of a given dimension into “varieties of lattices”, we show that
there are only finitely many rigid Λ-lattices L of any given dimension. As a consequence we show that if
the first Hochschild cohomology of Λ vanishes, then the Picard group and the outer automorphism group of Λ are finite. In particular, the Picard groups of blocks of finite groups defined over

𝒪

{\mathcal{O}}

are always finite.
A Tale of Two Trans Men: Transmasculine Identity and Trauma in Two Fairy-Tale Retellings
Authors: Jorgensen Jeana 
Published: November 2021

Abstract
Transgender identities in fairy tale retellings are rare, but can reveal much about gender fluidity. Helen Oyeyemi’s novel Boy, Snow, Bird conflates transgender identities with mirrored falsehoods and fairy-tale spells, pathologizing a trauma victim who turns out to also become an abuser, while Gabriel Vidrine’s novella “A Pair of Raven Wings” depicts a queer transgender man with dignity, making it clear that the trauma he suffers is at the hands of bigots rather than being an invention of a sick mind or the cause of his transition. Pairing these fairy-tale retellings illuminates the topic of gender fluidity in fairy tales by demonstrating that gender is indeed fluid, but that representations of gender fluidity due to trauma are misguided at best and harmful at worst, while those representations that assert the dignity of transgender people, even as they face trauma at the hands of bigoted people, are another stellar example of the genre’s potential to represent people who are culturally marginalized, connecting identity to power in a classic magical fairy-tale move.
A Sixteenth-Century Swedish Chronicler and his King on Folktales and Ballads
Authors: Meyer Ole , Crozier Alan 
Published: November 2021

Abstract
The first Scandinavian mentions of magic folk tales and ballads are by two clergymen-cum-historians, Olavus Petri (the Swedish reformer, 1493–1552), in a generic discussion in the lengthy Introduction to his unpublished Swedish Chronicle), and Anders Foss (1543–1607, Danish-born bishop of Bergen in Norway), who cites ATU 327B & 853 in a discussion of the reliability of Saxo’s late twelfth-century Gesta Danorum). Both discuss the value of traditional oral tales (and ballads) as historical sources: Anders Foss rejects them, whereas Olavus Petri emphasizes their value as expressions of demotic attitudes towards the rich and mighty. This was heavily censured by King Gustaf I Vasa, who forbade the publication of Olavus’ Chronicle.

Note on terminology:

Olavus Petri’s preface, a large part of which is here translated for the first time, seems to be the first evidence of the Swedish word “sagor” (plural of “saga”) being used to denote a specific narrative genre (= wonder tales?). Similarly, Anders Foss’s “euentyrer” (archaic plural form of “eventyr” = Märchen, sg. & pl.) is probably the first example of the word being used in this sense in Danish (other than in the still current meaning “adventure” or “quest”).
Drying kinetics and quality characteristics of daylily dried by mid-infrared
Authors: Wang Nan , Yang Shuaiyao , Zhang Yifu , Jiang Lan , Zheng Xuechao , Jiang Peiyun , Chen Ye 
Published: November 2021

Abstract
Industrially, the use of far-infrared (FIR) as a heat source for drying daylily presents some issues, such as high energy consumption and large loss of nutrients. The use of mid-infrared (MIR) was performed to study the drying of daylily to explore its advantages, with the FIR drying as a comparison. Drying models were established by the drying kinetics, and the changes of nutrition, rehydration ratio (RR) and water migration pattern were researched. The results showed the best-fitting drying model was the Modified Henderson and Pabis model. Under the same temperature, compared with FIR drying, the drying time of MIR drying was shortened by 50%, the effective moisture diffusivity (D
eff) was increased by 103%, the drying activation energy (E
a) was reduced by 10%, the reducing sugar and ascorbic acid retention rate was increased by 13.9% and 9.7%, respectively. The MIR drying had better RR and water migration characteristics.
A fully backward representation of semilinear PDEs applied to the control of thermostatic loads in power systems
Authors: Izydorczyk Lucas , Oudjane Nadia , Russo Francesco 
Published: November 2021

Abstract
We propose a fully backward representation
of semilinear PDEs with application to stochastic control.
Based on this, we develop a fully backward Monte-Carlo scheme allowing to
generate the regression grid, backwardly in time, as the value function is
computed. This offers two key advantages in terms of computational
efficiency and memory. First, the grid is generated adaptively in the areas of interest, and second, there is no need to store the entire grid.
The performances of this technique are compared in simulations
to the traditional Monte-Carlo forward-backward approach
on a control problem of thermostatic loads.
Identification of LIG1 and LIG3 as prognostic biomarkers in breast cancer
Authors: Sun Lin , Liu Xinyu , Song Siqi , Feng Lingjun , Shi Chunying , Sun Zhipeng , Chen Bo , Hou Haiqing 
Published: November 2021

AbstractDNA ligase (LIG) plays a key role in connecting the 3′-OH end of a DNA strand to the 5′-P end of another DNA strand, resulting in the formation of a phosphodiester bond. It has been reported that LIGs (including LIG1, LIG3 and LIG4) play important roles in the occurrence and progression of many cancers. However, the role of LIGs in breast cancer (BC) is still unclear. In this study, we aim to reveal the expression level, function, and prognostic value of LIGs in BC. Bioinformatic tools were used to study the expression level, potential function and prognostic value of LIG1 and LIG3 in BC patients. ENCORI was used to predict microRNAs (miRNAs) that regulate LIG1 and LIG3 and established a valuable miRNA–mRNA regulation network for BC. We found that the expression of LIG1 and LIG3 was upregulated in BC and predicted high relapse-free survival (RFS) in BC patients. Functional annotation analysis was performed to reveal the role of LIG1 and LIG3 in BC. In addition, hsa-miR-22-3p was identified to be potentially involved in the regulation of LIG3. We suggest that LIG1 and LIG3 are novel valuable prognostic biomarkers for BC and has-miRNA-22-3p may be a potential therapeutic target for BC.