bluuebunny/crossref_metadata_2025 huggingface dataset:
Bifurcation diagrams of one-dimensional Kirchhoff-type equations
Authors: Shibata Tetsutaro
Published: September 2022

We study the one-dimensional Kirchhoff-type equation

−

(

b
+
a
‖
u
′

‖

2

)

u

″

(

x

)

=
λ
u

(

x

)

p

,

x
∈
I
≔

(

−
1
,
1

)

,

u

(

x

)

>
0
,

x
∈
I
,

u

(

±
1

)

=
0
,

-\left(b+a\Vert u^{\prime} {\Vert }^{2}){u}^{^{\prime\prime} }\left(x)=\lambda u{\left(x)}^{p},\hspace{1em}x\in I:= \left(-1,1),\hspace{1em}u\left(x)\gt 0,\hspace{1em}x\in I,\hspace{1em}u\left(\pm 1)=0,

where

‖
u
′
‖
=

∫

I

u
′

(

x

)

2

d
x

1

/

2

\Vert u^{\prime} \Vert ={\left({\int }_{I}u^{\prime} {\left(x)}^{2}{\rm{d}}x\right)}^{1\text{/}2}

,

a
>
0
,
b
>
0
,
p
>
0

a\gt 0,b\gt 0,p\gt 0

are given constants and

λ
>
0

\lambda \gt 0

is a bifurcation parameter. We establish the exact solution

u

λ

(

x

)

{u}_{\lambda }\left(x)

and complete shape of the bifurcation curves

λ
=
λ

(

ξ

)

\lambda =\lambda \left(\xi )

, where

ξ
≔
‖

u

λ

‖

∞

\xi := \Vert {u}_{\lambda }{\Vert }_{\infty }

. We also study the nonlinear eigenvalue problem

−
‖
u
′

‖

p
−
1

u

″

(

x

)

=
μ
u

(

x

)

p

,
x
∈
I
,

u

(

x

)

>
0
,
x
∈
I
,

u

(

±
1

)

=
0
,

-\Vert u^{\prime} {\Vert }^{p-1}{u}^{^{\prime\prime} }\left(x)=\mu u{\left(x)}^{p},x\in I,\hspace{1em}u\left(x)\gt 0,x\in I,\hspace{1em}u\left(\pm 1)=0,

where

p
>
1

p\gt 1

is a given constant and

μ
>
0

\mu \gt 0

is an eigenvalue parameter. We obtain the first eigenvalue and eigenfunction of this problem explicitly by using a simple time map method.
Effect of selenium and methods of protein extraction on the proteomic profile of Saccharomyces yeast
Authors: Kieliszek Marek , Waśko Adam , Michalak Katarzyna , Kot Anna M. , Piwowarek Kamil , Winiarczyk Stanisław
Published: September 2022

Selenium may influence the biosynthesis of individual proteins in the yeast cell cytosol. In this study, we used two-dimensional (2D) electrophoresis to identify proteins that are differentially expressed by the enrichment of selenium in Saccharomyces cerevisiae yeast cells. We chose eight protein fractions for further proteomic analysis. A detailed analysis was performed using the Ultraflextreme matrix-assisted laser desorption/ionisation time-of-flight/time-of-flight mass spectrometer, which enables fast and accurate measurement of the molecular weight of the analysed proteins. This study, for the first time, provides evidence that selenium-enriched yeast contains higher levels of mitochondria malate dehydrogenase, adenosine-5′-triphosphate (ATP)-dependent RNA helicase dbp3, and tryptophan dimethylallyltransferase, and alanyl-tRNA editing protein AlaX than yeast without the addition of selenium. It should be emphasised that the proteomic variability obtained reflects the high biological and complexity of yeast metabolism under control and selenium-enriched conditions and can be properly used in the future as a model for further research aimed at determining the expression of appropriate metabolic genes.
Analysis of cryoproteins with a focus on cryofibrinogen: a study on 103 patients
Authors: Natali Patrizia , Debbia Daria , Cucinelli Maria R. , Trenti Tommaso , Amati Gabriele , Spinella Amelia , Giuggioli Dilia , Mascia Maria T. , Sandri Gilda
Published: September 2022

Objectives

Cryofibrinogen (CF) is an abnormal protein in plasma that precipitates at 4 °C and dissolves at 37 °C. Whilst serum cryoglobulins (CGs) analysis is common practice, CF investigation is rarely performed. This study aims to describe the testing methodology developed at our laboratory, potential pitfalls for all analytical phases, the distribution among hospital wards and clinical conditions underlying test requests and clinical conditions in which to order CF analysis is useful.

Methods

Retrospective analysis of laboratory samples received between January 2019 and June 2021 with CF testing requests.

Results

A complete protocol for CF pre-analytical, analytical and post-analytical phases are supplied. Most test requests were received from the rheumatology department for systemic sclerosis or liver transplant screening. Among the 103 in-patients included, CF+ was confirmed in 68 patients (66%). Of observed CF+ patients (n=68) most cases were CGs− (n=44, 67%). Isolated CF was found in 43% of the cases. Among CF− patients (n=35; 34%) only 2 patients had positive CGs (CGs+). Among rheumatology patients (n=66), isolated CF+ was observed in 45% (n=30/66), whilst among patients with systemic sclerosis with CF+ (n=19), isolated CF+ was detected in 79% (n=15/19).

Conclusions

Described analytical procedures may be used for the creation of harmonized recommendations and indications for CF analysis. Isolated CF positivity among hospitalized patients, predominantly rheumatology and systemic sclerosis patients, appears higher than rates previously reported in literature. We propose CF test recommendations should be included in investigation protocols for diseases where cryofibrinogenemia may occur.
Longitudinal clinical reasoning theme embedded across four years of a medical school curriculum
Authors: Rowat Jane , Suneja Manish
Published: September 2022

Objectives

The acquisition of clinical reasoning (CR) skills is essential for future healthcare providers as they advance through their education. There is growing consensus that CR skills should be longitudinally integrated into undergraduate curriculum for acquisition/application of these skills. However, only a minority of schools reported having CR focused teaching sessions, citing a lack of curricular time and faculty expertise as the largest barriers. We describe the design and implementation of this theme and report the effects of its early introduction in Phase One as measured by the Diagnostic Thinking Inventory (DTI).

Methods

The Carver College of Medicine developed and implemented a longitudinal four-year clinical reasoning theme (CRT) with a special emphasis on introducing concepts in the preclinical years (Phase One). Educational strategies used to implement the theme relied on following principles: 1) new skills are best acquired in context of application; 2) contextual learning stimulates transfer of knowledge; and 3) knowledge of pathophysiology is necessary but alone is not sufficient to develop CR skills. A patient-centered CR schema served as the framework for developing the theme. Specific focus areas, pedagogies and assessment strategies were established for each of the three phases.

Results

The cohort with CRT demonstrated a significant increase in total DTI score after theme implementation compared to the cohort without.

Conclusions

A formal 4-year longitudinal CR theme is feasible, allowing for integration of pathophysiology, social determinants of health, and clinical skills. Early introduction of CR concepts as assessed by DTI showed improvement in student reasoning skills post-intervention.
Synthesis of insoluble sulfur and development of green technology based on Aspen Plus simulation
Authors: Zhou Liang-liang , Wang Wen-bo , Du Meng-cheng , Ma De-long , Zhang Xiao-lai
Published: September 2022

The continuous process for the production of insoluble sulfur (IS) has been developed to overcome the disadvantages associated with the traditional batch process, such as low automation, discontinuous production, and high consumption of sulfur and CS2. The consumption of CS2 in the continuous process is lower than that in the batch process. The recovery of solvent facilitates the recycling of CS2 and N2 in addition to the closed circulation of the entire system. The key process and recovery parameters of the IS synthesis were simulated using Aspen Plus. Sulfur was completely recovered after high-temperature pyrolysis, and the utilization ratio of sulfur atoms was increased from approximately 50% to more than 95%. Tail gas was comprehensively utilized through compression and cryogenic green treatment. Based on the developed green synthesis process and simulated process parameters, the continuous production of IS was evaluated on an industrial scale of 10,000 metric tonnes. Owing to the continuous characteristics of the production process, the air tightness of the production process was significantly improved, and the quality of the product was more stable than that of the product obtained by the current domestic batch process. The unconverted sulfur could be recycled after recovery, without low-grade sulfur as a by-product. The amount of sulfur used as raw material per unit product was reduced; the comprehensive conversion rate of sulfur to IS exceeded 95%, which significantly improved the utilization rate of sulfur atoms. Through the compression and condensation of the tail gas, the recovery efficiency of CS2 was considerably improved at the same temperature, and compressed N2 could be simultaneously obtained. The liquefaction rate of CS2 approached 91.78%, which was characterized by obvious greening.
The cognitive construction-grammar approach to teaching the Chinese Ba construction in a foreign language classroom
Authors: Kim Hyunwoo , Kim Tae Eun , Park Jeeyoung
Published: September 2022

The present study introduces a novel instructional approach to teaching a Chinese construction to college students in a foreign language classroom. Based on the framework of the construction-grammar approach to language acquisition, this study tested the effect of construction-based teaching, which integrates formal and semantic aspects of language with contextually meaningful visual scenes, in Korean-speaking Chinese learners’ acquisition of the Chinese Ba construction. Two groups of Chinese learners, who were enrolled in second-semester college-level Chinese classes, received constructional (n = 33) or form-focused instruction (n = 33) for 13 weeks. Results from elicited production and grammaticality judgment tasks implemented preceding and following the instruction showed that the constructional instruction group had improvements to a greater extent than the form-focused instruction group. These findings underscore the validity of the construction-grammar approach as an effective teaching method in foreign language learning settings.
Kant’s Ontology of Appearances and the Synthetic Apriori
Authors: Friebe Cord
Published: September 2022

Kant’s ontology of appearances implies that the numerical distinctness of empirical objects is grounded in their appearance-aspect, more precisely in space as pure intuition, in which alone such objects can be given. With distinguishing concepts things can only be thought: in contrast to Leibniz’s complete concepts and to Kripke’s rigid designators, Kant’s general concepts do not entail their referents analytically. They must be applied to intuition, i. e. be completed synthetically. Consequently, Kant’s ontology of merely singular (but not unique) individuals (Einzeldinge) is closely connected with a genuine semantics of synthetic reference via intuition, expressed by irreducible demonstratives such as “this”, “here”, and “now”. Accordingly, the judgment “There can be (or could have been) indiscernibles” is synthetic-apriori, which distinguishes Kant’s view both from skeptical empiricism and from heavyweight ontological realism.
Is it the Understanding or the Imagination that Synthesizes?
Authors: Sethi Janum
Published: September 2022

A common reading of Kant’s notion of synthesis takes it to be carried out by the imagination in a manner guided by the concepts of the understanding. I point to a significant problem for this reading: it is the reproductive imagination that carries out the syntheses of apprehension and reproduction, and Kant claims repeatedly that the reproductive imagination is governed solely by its own laws of association. In light of this, I argue for a different division of the labor of synthesis between the imagination and the understanding. On my view, while the reproductive imagination puts representations together in accordance with laws of association, the understanding recognizes (some of) these combinations of representations as necessary in virtue of corresponding to a connection in the objects represented. I conclude by suggesting that a virtue of my account is that it can make sense of Kant’s claim that the relational categories are merely regulative for intuitions.
Analyzing the semiotic nature of GIFs: visual nominalization and visual telicity
Authors: Fan Yi
Published: September 2022

GIFs, short audio-free loops of moving sequences, are active members of social semiotic resources in the era of Internet 2.0 that could generate humor, mediate power and signal identity. This paper proposes the perspective of visual nominalization and visual telicity as GIF properties that, in the environment of social media technologies, become capable of expressing polyphonic evaluation, transcontexualized polysemy, and dual deixis. Visual nominalization expresses the freeing of movement from integration into a time-dependent narrative and the abstraction resulting in deemphasized participants and emphasized processes. These traits are activated and realized by visual telicity, which is looping movement that can be conceptualized as an atelic visual container which packages and expresses both telic and atelic processes. This paper argues that visual nominalization and visual telicity are what establishes GIFs’ semiotic differences from still images and film videos, and facilitates their integration with written language in online and computer-mediated discourse.
Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption
Authors: Kachiraju Satya R. , Nekrashevich Ivan , Ahmad Imtiaz , Farooq Hira , Chang Long , Kim Sangsik , Kim Myoung-Hwan
Published: September 2022

Resonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow frequency tunability and angular sensitivity. We propose and experimentally demonstrate the subwavelength-scale (≈λ
0/150) resonant nanocavity arrays that enhance the absorption spectrum of the device in the mid-infrared (10–12 microns) via excitation of coupled surface plasmon–phonon polaritons. The proposed metal–insulator–polar dielectric (gold–silicon–silicon carbide) structure supports a guided mode of the coupled surface polaritons in the lateral direction while vertically confining the mid-infrared wave within the 80 nm thick dielectric spacer. In particular, the subwavelength-scale (≈λ
0/10) gratings are imposed to form Fabry–Pérot cavity arrays displaying angle-insensitive and frequency-tunable absorption of up to 80% of the optical power in the mid-infrared. Our work should benefit diverse mid-infrared applications and novel designs of polariton-based photonic devices.
The crystal structure of (carbonato κ2
O,O′)(2-oxopyridin-1(2H)-olato-κN)tris(trimethylphosphine)rhodium(III) water solvate, C15H33NO5P3Rh
Authors: Elmakki Mohammed A. , Alexander Orbett T. , Venter Johan A. , Roodt Andreas
Published: September 2022

C15H33NO5P3Rh, orthorhombic, Pnma (no. 62), a = 19.8694(11) Å, b = 12.5765(7) Å, c = 8.6990(5) Å, V = 2173.8(2) Å3, Z = 1, Rgt
(F) = 0.0394, wRref
(F
2) = 0.0941, T = 100 K, α = β = γ = 90°.
The crystal structure of 5-(2-fluoro-3-methoxyphenyl)-1-(2-fluoro-6-(trifluoromethyl)benzyl)-6-methylpyrimidine-2,4(1H,3H)-dione, C20H15F5N2O3
Authors: Wu Yundeng , Xie Jun , Wan Hui , Xu Xiangyang , Li Jian
Published: September 2022

C20H15F5N2O3, orthorhombic, Pbca (no. 61), a = 10.9913 (4) Å, b = 11.0451(5) Å, c = 30.3925(14) Å, V = 3689.6 (3) Å3, Z = 8, R

gt
(F) = 0.0360, wR

ref
(F
2) = 0.0927, T = 170 K.
A Tax Credit Proposal for Profit Moderation and Social Mission Maximization in Long-Term Residential Care Businesses
Authors: Kerlin Janelle A. , Ye Meng , Chen Wendy
Published: September 2022

This policy brief proposes a tax credit with related qualifying conditions that address the serious deficiencies related to abuse and neglect found in the current for-profit long-term care space. It also seeks to address the lack of government accountability for huge outlays of taxpayer dollars in the form of Medicare and Medicaid payments to these facilities, much of which results in maximizing profits for wealthy investors at the expense of vulnerable individuals with limited voice. Our proposed policy arrangement alters the organizational DNA of the for-profit organization, including the moderation of profit, to circumvent the existing financial incentives that are driving the mistreatment and malpractice so evident in the system. It aims to achieve this through four policy components including social financing, a sliding dividend cap, employee-ownership, and limits on complex corporate structures which are tied to a tax credit. This multi-faceted policy idea is intended to start the discussion around a possible path forward.
The economic impact of infectious diseases of children at kindergarten age
Authors: Graichen Joanna
Published: September 2022

Children are particularly affected by infectious diseases. Little is known about economic consequences for society. Conducting a cost estimate reveals that over three billion euros are spent annually because of infectious diseases of kindergarten children in Germany. Additionally, intangible costs occur. This underscores the urgent need to develop health policies to reduce children’s risk of infections.
Medical Devices: Incentives and Impact of Regulatory Instruments
Authors: Henschke Cornelia
Published: September 2022

Regulating health technologies is an important issue to ensure patient access to effective and safe medical devices and to enable coverage of those through health systems. This article explains the innovation payments for medical devices in inpatient care with regard to the evidence on safety and effectiveness of the technologies, shows selected developments as well as effects and incentives of the approach.
Der CCI-6D: Indexinstrument zur Messung der Pflegeheimqualität
Authors: Damm Kathrin , de Jong Lea , Lückemann Maximilian , Herr Annika
Published: September 2022

Mithilfe eines präferenzbasierten Indexinstruments zur Messung der Pflegeheimqualität kann die gesundheitsökonomische Evaluation von Pflegeleistungen erleichtert und die Perspektive der Nutzer:innen stärker als bisher in die Bewertung einbezogen werden. Ein solches Instrument ist der in Australien entwickelte Consumer Choice Index - 6 Dimension (CCI-6D). Durch die Übertragung des Instruments auf das deutsche Pflegewesen sowie die Ermittlung von Gewichtungsfaktoren soll dessen Anwendung auch hierzulande ermöglicht werden.
Gedanken an Gesundheit bei Diabetes: Ergebnisse der DiaDec-Studie
Authors: Borgmann Sandra Olivia , Chernyak Nadja , Haastert Burkhard , Linnenkamp Ute , Andrich Silke , Razum Oliver , Icks Andrea
Published: September 2022

Bei Menschen mit chronischen Erkrankungen können häufige negative Gedanken einerseits mit ungünstigen Gesundheitsoutcomes, andererseits mit positiven Outcomes wie gesundheitsförderndem Verhalten in Verbindung stehen. Wir berichten die Ergebnisse einer Studie, die sich mit Gedanken an Gesundheit bei Menschen mit Diabetes befasst. Wir untersuchten Häufigkeit, Valenz und Zusammenhang solcher Gedanken mit gesundheitsbezogener Lebensqualität, diabetesbezogenen Belastungen und depressiven Symptomen.
Provider behavior in health and long-term care markets – the role of altruism and non-profit motives
Authors: Kesternich Iris , Van Damme Marjolein
Published: September 2022

Since health and long-term care spending in developing countries is taking up rising shares of GDP, it is important to understand provider behavior in these markets. This article wants to shed light on non-financial motives of providers and how they interact with financial motives, efficiency concerns, and competition. It also wants to point out several areas that deserve more attention from both researchers and policymakers.
Preservation Practices for Information Resources in Public University Libraries in Tanzania
Authors: Mubofu Christian , Mambo Henry , Samzugi Athumani
Published: September 2022

The present study examined the preservation practices for information resources in seven public university libraries in Tanzania. Convenient and purposive sampling techniques were used to recruit library staff and library directors respectively to participate in the study. Data were collected through questionnaires and semi-structured interviews. The quantitative data obtained from the questionnaires were analysed using the Statistical Product and Service Solution (version 20) software while the qualitative data from the interviews were analysed using the thematic data analysis method. Regarding the effective preservation approaches for information resources, the study established that binding, digitization, migration, and emergency preparedness plans were highly cited. The following were the recommended preservation approaches for adoption in public university libraries: digitization, refreshing, proper shelving, and cleanliness of all library areas, migration, technology preservation, and binding. From the findings, it was concluded that public university libraries have a variety of preservation approaches for both print and digital information resources. The study recommends that policymakers and the Ministry of Education, Science, and Technology should train librarians in skills that they can apply in preserving information resources using modern technologies.
The implication of molecular markers in the early stage diagnosis of colorectal cancers and precancerous lesions
Authors: Acar Hasan Zafer , Özer Nazmi
Published: September 2022

Mortality can be significantly reduced if noninvasive molecular markers that are effective in the diagnosis of both early colorectal cancers and precancerous lesions are used in screening tests.In this study, our aim is to review the studies conducted with molecular markers obtained noninvasively for diagnosis in early-stage colorectal cancer and precancerous lesions and to reveal the most efficient and cost-effective ones.In our study, it has been shown by analyzing noninvasive molecular markers used in the diagnosis of early-stage colorectal cancers and precancerous lesions, that high rates of effective diagnosis can be obtained after given screening processes, even if these are relatively less effective. In particular, miR-21 in faeces and plasma has been found to be the most efficient and cost-effective biomarker.In order to reduce mortality in colorectal cancers, screening tests should be performed with molecular markers that are effective in early-stage colorectal cancers. However, novel biomarkers are also needed to detect both early colorectal cancers and precancerous lesions. When miR-21 analysis in stool and plasma is widely used as a screening test for early-stage colorectal cancer and precancerous lesions, early diagnosis rates can be significantly increased and mortality rates reduced.
A Covid-19 e as Tensões Federativas
Authors: De Oliveira Pinheiro Adriana , Lucas de Moura Palotti Pedro , Mara Vaz Guimarães de Araújo Suely , Alves Marinho Rodrigues Julia
Published: September 2022

A pandemia colocou em xeque a capacidade de os países administrarem crises rapidamente. Este artigo analisa os discursos de autoridades relevantes e os pontos de tensão federativa no Brasil em torno da Covid-19. Procuramos compreender os principais acontecimentos e decisões políticas tomadas pelas autoridades políticas desde o surgimento dos primeiros casos em fevereiro de 2020 até o final de janeiro de 2021. Foram identificadas três fases relevantes: os governadores adotam as primeiras medidas de isolamento social, essas medidas foram marcadas por períodos de alternância com relaxamento e subsequente endurecimento das regras, e a última fase marca o início da vacinação e da segunda onda de contágio no país. Os resultados sugerem a polarização do discurso: de um lado há discursos alinhados ao Presidente Jair Bolsonaro e com uma postura despreocupada com o Coronavírus, e do outro lado os governadores, que criticam a falta de coordenação federal.
Synthesis and characterization of cordierite and cordierite-zirconia by conventional approach
Authors:   School of Mechanical Engineering, VIT, Chennai, Tamil Nadu-600127, Kumar M. S. , Sakthivel G. ,   Centre for Automation and Robotics, VIT, Chennai, Tamil Nadu-600127, Thiyagarajan R. ,   School of Mechanical Engineering, VIT, Chennai, Tamil Nadu-600127, Vanmathi M. ,   School of Electrical Engineering, B S Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu-600042, Mangalaraja R. V. ,   Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion, Chile, Ismail M. ,   School of Electrical Engineering, B S Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu-600042, Elayaperumal A. ,   Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu – 600025
Published: September 2022

A wide recognition for cordierite ceramic due to its superior mechanical and electrical properties made cordierite a candidate for study. A simple approach of synthesis of cordierite and cordierite zirconia (5-15 wt %) was tried at the stoichiometric composition with standard raw material of high purity. The binder, lubricant and flux such as polyvinyl alcohol, ethylene glycol and sodium hydroxide respectively were added with 1 wt%. The powders were mixed, wet milled, dried at 100°C for 12 h, compacted and sintered at different temperatures between 600-1400°C for 3 h. The studies on XRD, FTIR and TG/DTA were carried out and the results from the studies confirmed the presence of cordierite phase alone for pure cordierite and cordierite along with zircon for cordieritezirconia compositions.
Confinement factor and carrier recombination of InGaAsP/InP quantum well lasers
Authors:   Department of Physics, College of Education for Pure Science (Ibn-ALHaitham)/University of Baghdad, Iraq, Salman E. M. T. , Jobayr M. R. ,   Dept. Radiology Technology/College of Health and Medical Technology / Middle Technical University (MTU), Iraq, Hassun H. K. ,   Department of Physics, College of Education for Pure Science (Ibn-ALHaitham)/University of Baghdad, Iraq
Published: September 2022

Low-dimensional materials have attracted significant attention in developing and enhancing the performance of quantum well lasers due to their extraordinary unique properties. The optical confinement factor is one of the most effective parameters for evaluating the optimal performance of a semiconductor laser diode when used to measure the optical gain and current threshold. The optical confinement factor and the radiative recombination of single quantum wells (SQW) and multi-quantum wells (MQW) for InGaAsP/InP have been theoretically studied using both radiative and Auger coefficients. Quantum well width, barrier width, and number of quantum wells were all looked at to see how these things changed the optical confinement factor and radiative and non-radiative recombination coefficients for multi-quantum well structures. It was found that the optical confinement factor increases with an increase in the number of wells. The largest value of the optical confinement factor was determined when the number of wells was five at any width. The optical confinement coefficient was 0.23, 0.216, and 0.203 for the number of wells (3, 4, and 5) and well width (27, 19.5, and 15) nm, respectively. In addition, the radiative recombination coefficient increases with the width of the quantum well after 5 nm, and it is much bigger than that of its bulk counterparts.
Expression of DNA methyltransferases (DNMTs) at mRNA level in ovine endometrium during estrus cycle and early pregnancy
Authors: Hitit Mustafa , Köse Mehmet
Published: September 2022

Amaç: Bu çalışmanın amacı, östrus döngüsü ve erken gebelik sırasında DNA metiltransferaz enzim genlerinin (DNMT1, DNMT3A ve DNMT3B) ekspresyonunun koyun endometriyumunda düzenlenip düzenlenmediğini açıklamaktır.
Gereç ve Yöntem: İnterkarunkular bölgeleri içeren endometriyal örnekler çiftleşmeyi takiben gebeliğin 12 (P12, n = 4), 16 (P16, n = 4) ve 22. (P22, n = 4) günlerinde ve östrus döngüsününe karşılık gelen 12. (C12, n = 4), 16. (C16, n = 4) ve 22. (C22, n = 4) günlerde toplam 24 koyundan toplandı. DNMT'lerin nispi mRNA ekspresyon düzeyleri gerçek zamanlı polimeraz zincir reaksiyonu (RT-qPCR) kullanılarak değerlendirildi.
Bulgular: Tüm DNMT'lerin ekspresyonları östrus döngüsü ve erken gebelik sırasında koyun endometriyumda tespit edildi. DNMT1 mRNA ekspresyonunun kararlı durum seviyeleri P16'da C16'dan daha yüksekti, ancak grupların geri kalanında değişmedi. Bununla birlikte, gebeliğin erken döneminde DNMT3A mRNA seviyesi P22 ve P16'ya kıyasla P12'de en yüksek ekspresyon seviyelerine sahipti (p<0.01). Öte yandan, DNMT3A mRNA seviyesi P16'da C16'dan daha düşüktü (p<0.01), ayrıca P22'de C22'ye kıyasla benzer bir düşüş bulundu (p<0.01). DNMT3B mRNA ekspresyon seviyesi ise hem östrus döngüsü ve hem de erken gebelik sırasında değişmedi.
Öneri: Östrus siklusu ve erken gebelik sırasında koyun endometriyumundaki gen ekspresyonunun kontrolü için DNA metilasyonu ile ilgili DNMT'ler gerekli olabileceği kanısına varıldı.
Application of three types of aminated lignins for efficient removal of Cd(II) and Pb(II) ions in aqueous solution
Authors: Heo Ji Won , An Liangliang , Chen Jiansong , Kim Min Soo , Lee Sang-Deok , Kim Yong Sik
Published: September 2022

Lignin is a renewable natural aromatic polymer that is generated as a co-product during lignocellulosic biorefinery processes, and it has been applied widely as a functional biomaterial. In this study, the adsorption behavior of Cd(II) and Pb(II) metal ions was investigated via ion chelation using aminated lignins (ALs) with primary, secondary, and tertiary amine groups. ALs exhibited optimal Cd(II) and Pb(II) adsorption capacities in solution under neutral conditions due to their chelating, electrostatic, and cationic–π interactions with metal ions. The AL with the primary amine group showed the highest adsorption capacities for both Cd(II) and Pb(II), reaching 83.2 and 159.7 mg·g-1, respectively, followed by the ALs with secondary and tertiary amine groups. The adsorption kinetics and isotherm analysis demonstrated that all adsorption behaviors followed the Langmuir isotherm and pseudo-second-order kinetics. Thermodynamic studies revealed that the adsorption processes of Cd(II) and Pb(II) using the ALs were spontaneous and endothermic. These results demonstrate that ALs are promising adsorbents for the removal of Cd(II) and Pb(II) metal ions.
Theoretical fundamentals and practical aspects of the implementation and use of digital money
Authors:   State Institution “Institute for Economics and Forecasting, NAS of Ukraine”, Mishchenko Volodymyr , Naumenkova Svitlana ,   Taras Shevchenko National University of Kyiv, Mishchenko Svitlana ,   Banking University
Published: September 2022

The study is devoted to the analysis of the practice of using certain types of digital money and substantiation of the theoretical foundations of the mechanisms of use of digital money of central banks. It is determined that the process of digitization of money, which is based on the use of new algorithms, data channels, information sources, evaluation and decision criteria, is a new stage in the development of banking and payment systems, central banks, national monetary systems and, in general, the entire monetary and financial system of the world. The shortcomings of the use of cryptocurrencies, the peculiarities of the functioning of unregulated digital markets that arise from their use are described, and the risks that cryptocurrencies may pose to national monetary and financial systems are identified. Calculations were made and a close correlation was found between the value of the NASDAQ 100 stock index and the price of bitcoin. Based on the analysis of the essence of digital money of central banks, organizational and technical approaches to their design, production and use, the objectivity of the process of their introduction is proved, the advantages and disadvantages of the new form of money are described, the mechanisms of transition from private to digital money is proposed. The main problems that hinder the process of introduction of digital money by central banks are identified and characterized. It has been proved that the introduction of digital money by central banks is the basis of the country's monetary sovereignty and an important tool for implementing economic and social policy. It is substantiated that the use of digital money of central banks will contribute to the transformation of fiscal and tax policy implementation mechanisms, financial monitoring system, monetary transmission channels, significant changes in the structure and functions of commercial and central banks, and strengthen the role of fintech companies in payment systems and financial markets.
Benefits and Limitations of Virtual Recruitment: Perspectives From Subspeciality Directors
Authors: Petersen Tara L. , King Jennifer C. , Fussell Jill J. , Gans Hayley A. , Waggoner-Fountain Linda A. , Castro Danny , Green Michael L. , Hamilton Melinda F. , Marcdante Karen , Mink Richard , Nielsen Katie R. , Turner David A. , Watson Christopher M. , Zurca Adrian D. , Boyer Donald L.
Published: September 2022

BACKGROUND AND OBJECTIVES

Because of the coronavirus disease 2019 pandemic and recommendations from a range of leaders and organizations, the pediatrics subspecialty 2020 recruitment season was entirely virtual. Minimal data exist on the effect of this change to guide future strategies. The aim of this study was to understand the effects of virtual recruitment on pediatric subspecialty programs as perceived by program leaders.

METHODS

This concurrent, triangulation, mixed-methods study used a survey that was developed through an iterative (3 cycles), consensus-building, modified Delphi process and sent to all pediatric subspecialty program directors (PSPDs) between April and May 2021. Descriptive statistics and thematic analysis were used, and a conceptual framework was developed.

RESULTS

Forty-two percent (352 of 840) of PSPDs responded from 16 of the 17 pediatric (94%) subspecialties; 60% felt the virtual interview process was beneficial to their training program. A majority of respondents (72%) reported cost savings were a benefit; additional benefits included greater efficiency of time, more applicants per day, greater faculty involvement, and perceived less time away from residency for applicants. PSPDs reported a more diverse applicant pool. Without an in-person component, PSPDs worried about programs and applicants missing informative, in-person interactions and applicants missing hospital tours and visiting the city. A model based upon theory of change was developed to aid program considerations for future application cycles.

CONCLUSIONS

PSPDs identified several benefits to virtual recruitment, including ease of accommodating increased applicants with a diverse applicant pool and enhanced faculty involvement. Identified limitations included reduced interaction between the applicant and the larger institution/city.
Productivity of three sweet potato cultivars: BRS Amélia, BRS Cuia and BRS Rubissol
Authors: Wolmann Flavio da Silva , Guerra Divanilde , De  Souza Eduardo Lorensi , Bohrer Robson Evaldo Gehlen , Bisognin Ramiro Pereira , Lanzanova Mastrangello Enivar , Da Silva Danni Maisa
Published: September 2022

The sweet potato (Ipomoea batatas L.) is a vegetable of great economic importance since it can be used for in natura consumption, for processing in agribusiness and/or biofuel production. The objective of this work was to evaluate the yield of three sweet potato cultivars: BRS Amelia, BRS Cuia and BRS Rubissol in the Northwest Region of Rio Grande do Sul. The experiment was conducted in the field for two consecutive years (harvests 2014/2015 and 2015/2016). The experimental design was in randomized blocks, evaluating 3 sweet potato cultivars for 2 agricultural years, with 4 replications. As results, it was observed that potato weights in the first year of study ranged from 272.0 g to 320.2 g. In the second year of evaluation, it ranged from 133.9 g to 247.1 g. In relation to the average productivity, the values obtained in the first year were 15.2 t ha-1 for BRS Amelia, 19.8 t ha-1 for BRS Cuia and 16.2 t ha-1 for BRS Rubissol. In the second year of evaluation, the values were 12.3 t ha-1 for BRS Amelia, 16.1 t ha-1 for BRS Cuia and 13.1 t ha-1 for BRS Rubissol. Cultivars presented yields higher than the national average from Brazil in the two evaluated years.
Effect of electrolyzed oxidizing water on the control of postharvest diseases in tropical fruits
Authors: Rodríguez-Pereida Carolina , González-Estrada Ramsés Ramón , Blancas-Benitez Francisco Javier , Velázquez-Estrada Rita María , Hernández-Montiel Luis Guillermo , Gutierrez-Martinez Porfirio
Published: September 2022

Electrolyzed oxidizing water is an eco-friendly emerging technology considered as a novel broad-spectrum sanitizer. The efﬁcacy of electrolyzed oxidizing water against Colletotrichum gloeosporioides, Fusarium oxysporum, and Penicillium italicum at different concentrations of free chlorine (0.5, 1, 6, 12, and 30 ppm) was evaluated. The results showed that at concentrations of 6, 12, and 30 ppm of free chlorine the mycelial growth, sporulation and germination process were totally inhibited in the strains tested. The inoculated fruit application of treatments by applying 30 ppm of free chlorine presented the best results for fungus control on artificially inoculated banana, papaya, and Persian lime fruits. The fruit quality (weight loss, TSS, pH, titratable acidity) was also evaluated. The application of electrolyzed oxidizing water had not negative impact on fruit quality. The results obtained confirm the antifungal activity of electrolyzed oxidizing water against the strains tested, as well as its capacity to cure infected fruits.
Image analysis for the evaluation of soybean seeds vigor
Authors: Barros Brandani Erich , Oliveira Silva Souza Nara , Matheus Mattioni Nilson , Fernandes de Jesus Souza Flívia , Souza Vilela Michelle , Alves Marques Érica , Felippe de Souza Ferreira Wallas
Published: September 2022

The search for time and human subjectivity reduction in the analysis of the physiologic potential of seeds has brought forward the use of computerized systems as an alternative. The goal of this research was to assess the effectiveness of the GroundEye equipment in the characterization of soybean seeds vigor by using the image analysis technique in comparison to the information provided by vigor tests recommended to soybean seeds. Sixteen lots of two soybean varieties were used — variety 98Y12 and P98Y70, characterized by the following tests: germination test, accelerated ageing test, cold test, tetrazolium test, and seedling emergence in the field. The image analysis was performed using the GroundEye software to obtain the vigor index and the average length of seedlings and roots for a later comparison with the results of the accelerated ageing test and the manual measurement of the average length of seedlings and roots. GroundEye has demonstrated efficiency in the determination of vigor of soybean seeds and has reduced the time needed to obtain the results in six days, being indicated in the quality control programs established by soybean seeds production companies.
Efecto de las enmiendas órgano minerales en la lixiviación de nitrógeno en dos inceptisoles
Authors: Elejalde Vargas Cindy Cynthia , Daza Torres Martha Constanza
Published: September 2022

Se evalúa la aplicación de enmiendas órgano-minerales (EOM) en la lixiviación de nitrógeno (N) en un suelo Andic Dystrudepts ácido, y en un Fluventic Haplusteps básico, usando lisímetros de drenaje. Los tratamientos son: testigo, lombricompost, gallinaza, montmorillonita, 3 proporciones de mezcla entre lombricompost y montmorillonita (LP), y 3 proporciones de mezcla entre gallinaza y montmorillonita (GP); las proporciones son diferentes para cada suelo. En el suelo ácido las proporciones varian entre 0.64:1 y 1.25:1; en el básico, entre 0.82:1 y 1.25:1, correspondiendo a la relación abono orgánico: montmorillonita. Cada tratamiento fue fertilizado con urea (46.0 %) a una dosis de 150 kg/ha de N. La aplicación de EOM redujo significativamente las pérdidas de agua y la lixiviación de amonio y nitrato, siendo más evidente en el suelo ácido y en los tratamientos con lombricompost. El tratamiento LP2 (1.2:1) reduce la pérdida de agua en un 53.7 %, amonio en 96.5 %, y nitrato en un 32.3 % en el suelo ácido; mientras que, en el suelo básico, el tratamiento LP3 (1.22:1) reduce la lixiviación de amonio en un 55.1 % y la pérdida de agua en un 42.0 %; el tratamiento GP3 (0.97:1), reduce en un 57.1 % la lixiviación de amonio, y en un 65.0 % la de nitrato.
La triste esperanza del arte en la filosofía de Theodor Adorno
Authors: Silva Rodríguez Manuel
Published: September 2022

El texto explora, en el pensamiento de Theodor Adorno, las relaciones que el arte sostiene con la sociedad y, dentro de ellas, los rasgos que revisten al arte de un carácter político. La concepción dual del arte como fait social y como autonomía permite reconocer, por un lado, que las obras de arte requieran de la sociedad para concretarse materialmente como fruto del trabajo y de la experiencia histórica y, por otro, que establezcan una relación crítica con la organización del mundo social. En el texto se muestra que, en el pensamiento de Adorno, la dimensión crítica de las obras de arte se concibe como una forma de negatividad frente a la sociedad, lo cual se fundamenta en los vínculos que el arte mantiene con un pasado luctuoso y, al mismo tiempo, le impone un imperativo moral y constituye su dimensión política. Para reconocer los elementos que articulan una vasta reflexión sobre el arte, el texto se detiene en varios de los momentos de la producción de Adorno y en algunas de las categorías que construyen esta concepción del hecho artístico. En la parte final, se resalta que, si bien en la filosofía de Adorno el arte es un modelo crítico de las sociedades controladas, su presencia no cambia la realidad.
Una genealogía de la comunicación popular en América Latina (1940-2020)
Authors: Amador-Baquiro Juan Carlos
Published: September 2022

La comunicación popular es un paradigma que surgió en América Latina como respuesta a las perspectivas hegemónicas de la comunicación, las cuales, en algunos casos, auspiciaron políticas civilizatorias, desarrollistas y neoliberales, orientadas no solo al control social y a la profundización del desequilibrio internacional de los flujos de información, sino a la conducción de las conductas de las poblaciones. En esta línea de reflexión, el presente artículo tiene como propósito develar, por medio de una genealogía histórica, los orígenes, el despliegue, las continuidades y las transformaciones de la comunicación popular en la región. Como metodología, se optó por la investigación documental, una estrategia que permite trabajar con corpus amplios de documentos para auscultar las condiciones históricas en las que se configura determinado fenómeno social. Luego de una revisión de 44 documentos de investigadores representativos de este campo, producidos entre 1980 y 2015, se identificaron tres hitos dentro del periodo 1940-2020. El primer hito, desarrollado entre 1940 y 1964, muestra la presencia, por un lado, de proyectos de comunicación estatales que emplean lo popular como estrategia civilizatoria y, por otro, de estrategias populares de comunicación originadas en organizaciones obreras y religiosas. El segundo hito, desplegado entre 1965 y 1988, evidencia la tramitación de la comunicación popular a partir de proyectos desarrollistas, insurgentes y comunitarios. En el tercer momento, el cual se produce entre 1989 y 2020, este paradigma de la comunicación transita por un proceso de redefinición en su teleología y sus repertorios de acción, así como por su inscripción en el sentipensamiento del sur.
Esto (¿)fue(?) así. Sobre la recreación en el documental contemporáneo
Authors: Zylberman Lior
Published: September 2022

La recreación se ha vuelto uno de los recursos más utilizados por el documental contemporáneo; sin embargo, dicho empleo no es una novedad, sino que su uso se remonta a los orígenes mismos del documental. En esa dirección, el presente artículo se propone analizar el uso de la recreación en el documental contemporáneo, profundizando en tres miniseries documentales. Para ello, primero se hará un breve recorrido histórico con el fin de problematizar este recurso, para luego estudiar tres producciones: Auschwitz: The Nazis and 'The Final Solution' (Rees, 2005), The Jinx: The Life and Deaths of Robert Durst (Jarecki, 2015) y A Wilderness of Error (Smerling, 2020). En el análisis propuesto, se trazarán dos cuestiones. Por un lado, pensar los diversos usos de la recreación que estas producciones hacen, reparando cómo este recurso puede volverse evidencia; así, la recreación emerge en nuestra contemporaneidad como un recurso válido para liberarse del archivo. Por el otro lado, en el desarrollo analítico, el artículo sugerirá cómo el estilo de Errol Morris, disruptivo en su momento, se volvió paradigma.
Eminectomía bilateral como tratamiento para luxación crónica de articulación temporomandibular. Reporte de caso
Authors: Vizuete–Bolaños Marco Xavier , Bahena–Martínez Edith , Sessaty–Flores Carmen , Hernández–Cruz Adrián
Published: September 2022

Introducción: la luxación de la articulación temporomandibular es un desplazamiento del cóndilo fuera de sus posiciones funcionales dentro de la fosa articular y la eminencia articular, la cual ocasiona una pérdida completa de la función articular. La luxación crónica es toda luxación aguda que progresa sin un tratamiento específico y que puede ser de carácter recurrente. La eminectomía es un tratamiento quirúrgico definitivo contra la luxación crónica de articulación temporomandibular. Objetivo: reportar el caso clínico de un paciente masculino, de la tercera década de su vida, con diagnóstico de luxación crónica de la articulación temporomandibular de cinco meses de evolución y presentar una revisión actualizada de la literatura sobre este procedimiento quirúrgico. Caso clínico: el paciente fue tratado quirúrgicamente con eminectomía bilateral. Discusión: la eminectomía es un procedimiento quirúrgico controversial; sin embargo, recientes investigaciones lo catalogan como seguro y efectivo. Conclusión: el caso clínico presentado muestra un buen resultado.
CÓDIGOS DE BARRA DE ADN PARA IDENTIFICACIÓN DE ESPECIES DEL GÉNERO Lonchaea FALLEN 1820 (DIPTERA: Lonchaeidae) de Antioquia
Authors: Balseiro Teheran Francisco Javier , Uribe Soto Sandra Ínes
Published: September 2022

Lonchaea es el género con mayor número de especies y distribución dentro de la familia Lonchaeidae. Normalmente los individuos de esta familia son confundidos con los de la familia de Tephritidae cuando se encuentran afectando frutos. Los pocos estudios taxonómicos que existen sobre el género hacen que la identificación de especies sea realmente difícil, especialmente con base en las hembras ya que todas las claves existentes Lonchaea es el género con mayor número de especies y distribución dentro de la familia Lonchaeidae. Los individuos de esta familia son confundidos con los de la familia Tephritidae y ambos se encuentran afectando frutos. Los pocos estudios taxonómicos sobre el género hacen que la identificación de las especies sea difícil, especialmente con base en las hembras, colectadas más frecuentemente, ya que todas las claves existentes están basadas en la morfología de los machos. Se asignaron las secuencias código de barras de ADN para especímenes del género previamente identificados por morfología y verificados por especialistas, logrando mediante la agrupación en M-OTUs (Unidades Taxonómicas Operativas Moleculares) la asociación de genotipos machos-hembras, proporcionando información molecular valiosa como apoyo para identificar individuos de ambos sexos, e incluso inmaduros colectados en campo o especímenes presentes en colecciones entomológicas.