bluuebunny/crossref_metadata_2025 huggingface dataset:
Robust and Powerful Structural Integrated Thin Film Supercapacitors for Lightweight Space Structures
Authors: Geier Sebastian , Petersen Jan , Eilenberger Marius , Wierach Peter
Published: October 2021

Stored energy is the decisive factor for almost all missions in transportation systems. Additionally, the energy devices must be powerful, and lightweight at the same time for efficient performance of the overall transportation system. Due to the advancing electrification, there is a huge demand for devices to store electrical energy. Aside from batteries, which receive a great deal of scientific attention, supercapacitors are a very promising technology. This system features several advantages such as short charging time, high energy density and cycle stability. Especially the latter advantage enables a further lightweight approach by integrating supercapacitors as a thin film into composite structures. Due to their cycle stability, supercapacitors are the ideal energy device for integration into hardly accessible positions such as mechanically loadable structures.

This publication deals with the strategy of structurally compliant integration of pouch supercapacitor cells (structural power composites). The aim is to operate a peak power application needed for space positioning. However, there are several properties which have to be optimized during the development of structural power composites to achieve the best possible electromechanical performance. Furthermore, there are effects which have a positive influence on the specific performance by scaling up from laboratory scale to a full-size demonstrator. In this case, integration of energy storage devices into structures offers a volume and weight reduction of up to 80% compared to a structure with commercial supercapacitors.
Delamination Detection in Fiber-Reinforced Polymers Using Mechanoluminescence-Optoelectronic Strain Sensor
Authors: Mongare Alfred , Ryu Donghyeon
Published: October 2021

Structural health monitoring (SHM) uses a network of sensors to be instrumented at critical locations in aerospace structures for timely damage detection. Some advanced technologies have been suggested for delamination detection of fiber-reinforced polymer (FRP) composites. However, these advanced sensors still suffer from dependency on an external power source. In particular, for cases where a large network of sensors is instrumented, power consumption by the sensor network may overwhelm the entire aerospace structural systems. To overcome the issue due to energy dependency of the state-of-the-art sensor technologies, self-powered sensors are needed for delamination detection in FRP of aerospace structures. In this study, a direct current (DC)-based strain sensor is suggested using multifunctional mechanoluminescent-optoelectronic (MLO) composites to be used for detection of delamination in FRP. First, an MLO-based strain sensor is fabricated using two functional materials: mechano-luminescent (ML) copper-doped zinc sulfide (ZnS:Cu)-based elastomeric composites and mechano-optoelectronic (MO) poly(3-hexylthiophene) (P3HT)-based thin films. Second, the sensor is then subjected to uniaxial sinusoidal cyclic loadings in a load frame and tested by varying strains and a constant loading rate to validate its DC-based strain sensing capability. DC responses are recorded during the cyclic loadings. Last, delamination detection in FRP is validated using the MLO sensor that is placed on an FRP test coupon, where pre-crack is formed to initiate delamination. The MLO-FRP specimen is subjected to cyclic loadings using 3-point bending test setup with varying maximum strains. The DC generated from MLO sensor is measured and compared to parameters calculated for assessing severity of delamination.
Predation Strategies of the Bacterium Bdellovibrio bacteriovorus Result in Overexploitation and Bottlenecks
Authors: Summers J. Kimberley , Kreft Jan-Ulrich
Published: October 2021

The discovery of antibiotics led to a dramatic drop in deaths due to infectious disease. Increasing levels of antimicrobial resistance, however, threaten to reverse this progress.
Spt20, a Structural Subunit of the SAGA Complex, Regulates Aspergillus fumigatus Biofilm Formation, Asexual Development, and Virulence
Authors: Chen Yuan , Stewart James I. P. , Liu Shuai , Sheppard Donald C. , Lu Ling , Zhang Shizhu
Published: October 2021

Eukaryotic transcription is regulated by a large number of proteins, ranging from sequence-specific DNA-binding factors to transcriptional coactivators (chromatin regulators and the general transcription machinery) and their regulators. Previous research indicated that the sequence-specific complex SomA/PtaB regulates the biofilm formation and asexual development of
Aspergillus fumigatus
.
Viral and Cellular Factors Leading to the Loss of CD4 Homeostasis in HIV-1 Viremic Nonprogressors
Authors: Colomer-Lluch Marta , Kilpelainen Athina , Pernas María , Peña Ruth , Ouchi Dan , Jimenez-Moyano Esther , Dalmau Judith , Casado Concepción , López-Galíndez Cecilio , Clotet Bonaventura , Martinez-Picado Javier , Prado Julia G.
Published: October 2021

The mechanism behind nonpathogenic human immunodeficiency virus type 1 (HIV-1) infection remains poorly understood, mainly because of the very low frequency of viremic nonprogressors (VNPs). Here, we report two cases of VNPs who experienced the loss of CD4
+
T-cell homeostasis (LoH) after more than 13 years of HIV-1 infection.
Ocular surface sphingolipids associate with the refractory nature of vernal keratoconjunctivitis: newer insights in VKC pathogenesis
Authors: Menta Vignesh , Agarwal Shweta , Das Ujjalkumar Subhash , Moksha Laxmi , Srividya Gurumurthy , Anandan Amrutha M , Srinivasan Bhaskar , Iyer Geetha , Velpandian Thirumurthy , Angayarkanni Narayanasamy
Published: October 2021

Background

The etiopathogenesis of vernal keratoconjunctivitis (VKC) is incompletely understood. Bioactive lipids play a key role in allergic disorders. This study focused on the sphingolipid metabolism on the ocular surface of VKC and to explore if it has a contributory role in the refractoriness of the disease.

Methods

Active VKC cases, (n=87) (classified as mild/moderate and severe/very severe based on the disease symptoms) and age-matched healthy controls (n=60) were recruited as part of a 2-year prospective study at a tertiary eye care centre in South India. Conjunctival imprint cytology was used to assess gene expression of enzymes of sphingolipids metabolism. Sphingolipids were estimated in the tears by LC-MS/MS analysis. In vitro study was done to assess IgE-induced alterations in sphingosine-1-phosphate (S1P) receptor expression and histone modification in cultured mast cells.

Results

Significantly altered gene expression of the sphingolipids enzymes and S1P receptor (SIP3R) were observed in conjunctival imprint cells of VKC cases. Pooled tears analysis revealed significantly lowered levels of S1P(d17:0), S1P(d20:1) (p<0.001) and S1P(d17:1) (p<0.01) specifically in severe/very severe VKC compared with both mild/moderate VKC and control. Cer(d18:/17:0) (p<0.001), ceramide-1-phosphate (C1P)(d18:1/8:0) (p<0.01) and C1P(d18:1/2.0 (p<0.05) were lowered in severe/very severe VKC compared with mild/moderate VKC. Cultured mast cells treated with IgE revealed significantly increased gene expression of S1P1 and 3 receptors and the protein expression of histone deacetylases (1, 6).

Conclusion

Altered sphingolipid metabolism in the ocular surface results in low tear ceramide and sphingosine levels in severe/very severe VKC compared with the mild/moderate cases. The novel finding opens up fresh targets for intervention in these refractory cases.
Scleral growth stunting via sub-Tenon injection of cross-linking solutions in live rabbits
Authors: Hoang Quan V , Wen Quan , Paik David C , Chun Yong Yao , Silverman Ronald , Nagasaki Takayuki , Trokel Stephen L , Zyablitskaya Mariya
Published: October 2021

Background

Scleral cross-linking is a potential method to inhibit axial elongation of the eye, preventing the progression of pathological myopia. Formaldehyde releasers, which are common preservatives found in cosmetics and ophthalmic solutions, have been shown to be not only effective in cross-linking corneal collagen in vitro and in vivo, but also have minimal toxicity effects on the eye. The present study aims to evaluate the efficacy of scleral cross-linking using sodium hydroxymethylglycinate (SMG) to inhibit eye growth using an in vivo rabbit model.

Methods

A cross-linking solution containing 40 mM SMG was delivered to the sub-Tenon’s space behind the equator. The application regimen included a two-quadrant injection performed five times over 2 weeks on New Zealand White rabbits (n=5, group 1), and one-time injection followed for up to 5 days on Dutch-Belted rabbits (n=6, group 2). Group 1 was monitored serially for axial length changes using B-scan ultrasound for 5–6 weeks. Group 2 was injected with a higher viscosity solution formulation. Both groups were evaluated for thermal denaturation temperature changes of the sclera postmortem.

Results

Axial growth was limited by 10%–20% following SMG treatment as compared with the untreated eye. Thermal denaturation analysis showed increased heat resistance of the treated eyes in the areas of injection. Overall, the SMG treatment inhibited eye growth with few side effects from the injections.

Conclusions

Cross-linking solutions delivered via sub-Tenon injection provide a potential method for limiting axial length growth in progressive myopia and could be used as a potential treatment for myopia.
SOX10: 20 years of phenotypic plurality and current understanding of its developmental function
Authors: Pingault Veronique , Zerad Lisa , Bertani-Torres William , Bondurand Nadege
Published: October 2021

SOX10 belongs to a family of 20 SRY (sex-determining region Y)-related high mobility group box-containing (SOX) proteins, most of which contribute to cell type specification and differentiation of various lineages. The first clue that SOX10 is essential for development, especially in the neural crest, came with the discovery that heterozygous mutations occurring within and around SOX10 cause Waardenburg syndrome type 4. Since then, heterozygous mutations have been reported in Waardenburg syndrome type 2 (Waardenburg syndrome type without Hirschsprung disease), PCWH or PCW (peripheral demyelinating neuropathy, central dysmyelination, Waardenburg syndrome, with or without Hirschsprung disease), intestinal manifestations beyond Hirschsprung (ie, chronic intestinal pseudo-obstruction), Kallmann syndrome and cancer. All of these diseases are consistent with the regulatory role of SOX10 in various neural crest derivatives (melanocytes, the enteric nervous system, Schwann cells and olfactory ensheathing cells) and extraneural crest tissues (inner ear, oligodendrocytes). The recent evolution of medical practice in constitutional genetics has led to the identification ofSOX10variants in atypical contexts, such as isolated hearing loss or neurodevelopmental disorders, making them more difficult to classify in the absence of both a typical phenotype and specific expertise. Here, we report novel mutations and review those that have already been published and their functional consequences, along with current understanding of SOX10 function in the affected cell types identified through in vivo and in vitro models. We also discuss research options to increase our understanding of the origin of the observed phenotypic variability and improve the diagnosis and medical care of affected patients.
Ultrasonic and acoustic pulse velocity methods for nondestructive detection of early decay in wood poles
Authors: Tallavo Fernando J. , Pandey Mahesh D. , Cascante Giovanni , Lara Cristobal A.
Published: October 2021

Wood poles are widely used to support overhead distribution and transmission power lines in North America and the world. These poles are vulnerable to internal deterioration due to extreme weather conditions, requiring a large number of poles to be inspected every year. This paper presents a comparative study of four stress wave-based nondestructive testing (NDT) methods commonly used for condition assessment of wood poles. These include the traditional approaches of sounding, sonic pulse velocity, and ultrasonic pulse velocity tests; and a new approach that considers the orthotropic characteristics of wood, uncertainties in the elastic properties, ultrasonic wave velocity and attenuation. Two poles with an internal hole of 4% of the cross-section are evaluated and compared by each method. Ultrasonic measurements of wave velocity and attenuation considering orthotropic characteristics of wood and uncertainties in the elastic properties provide a reliable wave-based NDT method for the detection of early decay in wood poles.
Shaking table test of combination isolation plate-shell integrated concrete liquid-storage structure
Authors: Qi Lei , Cheng Xuansheng , Zhang Shanglong , Wang Fuqiang , Xia Peiyan
Published: October 2021

To obtain the seismic performance of plate-shell integrated concrete liquid-storage structures (PSICLSS), a scale test model was built for shaking table testing. A combination isolation layer is proposed, and the dynamic responses of non-isolation and combination isolation PSICLSS under unidirectional and bidirectional earthquakes were tested. The results show that the combination isolation layer can change the spectral characteristics of the input acceleration, reducing the acceleration response and displacement of the structure, but it will increase the hydrodynamic pressure and liquid sloshing height. Under earthquake action, the liquid sloshing of combination isolation PSICLSS clearly appears as a nonlinear splash phenomenon. When considering the vertical earthquake, the horizontal acceleration response of PSICLSS and the liquid sloshing height change little, the peak hydrodynamic pressure changes significantly, and the peak position also changes. The maximum displacement of the isolation layer increases, but the residual displacement decreases.
A new experiment for gravitational wave detection
Authors: Ghayour Basem , Khodagholizadeh Jafar , Corda Christian , Tong Ming-Lei , Ghayour Ali
Published: October 2021

A new experiment for gravitational waves (GWs) detection is proposed. It is shown that the effect of GWs on sound waves (SWs) in a fluid is that GWs vary the pressure of the fluid as they pass through it. This variation can be found by analysing the gauge of the local observer. It is shown that one can, in principle, detect GWs through the proposed new experiment. The variation of the pressure of the fluid, which represents detected signals, is indeed much higher than the corresponding values of GW amplitudes. The examples of rotating neutron stars (NSs) and relic GWs are discussed. Remarkably, a comparison of the proposed new method with a previous paper of Singh et al. (New J. Phys. 19, 073023 (2017). doi: 10.1088/1367-2630/aa78cb ) on a similar approach shows a possible improvement of the sensitivity concerning the potential detection of GWs. It must be emphasized that this proposed procedure may be difficult in practical experiments because of the presence of different types of noise. For this reason, a section of the paper is dedicated to the discussion of such noise. On the other hand, this paper must be considered as pioneering the new proposed approach. Thus, we hope that in future more precise studies of the noise that concerns the proposed new experiment will be done.
Complementary mapping techniques to characterize the wood finish of musical instruments
Authors: Albano Michela , Ghirardello Marta , Fiocco Giacomo , Manzoni Cristian , Malagodi Marco , Comelli Daniela
Published: October 2021

The wood finish of historical bowed string musical instruments made in Cremona (Italy) during the seventeenth and eighteenth century is a complex multi-layered coating system, where varnishes and other organic binders are variously mixed with inorganic fillers and pigments. It consists of several layers with reduced thickness (tens of microns or less), hard to be distinguished due to the similarity of the constituent materials. Nevertheless, the identification of chemical and morphological features (layering and boundaries) is strictly necessary to disclose the traditional manufacturing procedures. In this paper, we propose an innovative protocol to fully characterize such a multi-layered coating system by combining hyperspectral photoluminescence (PL) micro-imaging with μFTIR-ATR mapping and SEM-EDX analysis. The protocol has been employed to study three cross-sectional samples from violins made by Lorenzo Storioni (second half of eighteenth century), whereas a properly reproduced laboratory mock-up was used to set the analytical protocol. The obtained results demonstrate that the combination of these complementary spectroscopy mapping techniques in a high-resolution strategy allows one to clearly identify the morphology of a few microns thin layers, to assess the penetration depth of sizing treatments into the wood and to detect restoration areas.
The Impact of Pre-Election Protests in Electoral Autocracies: The Case of Hong Kong’s Anti-ELAB Movement
Authors: WONG STAN HOK-WUI , CHAN KELVIN CHUN-MAN
Published: October 2021

Scholars of electoral autocracies accord far more attention to post-election protests than pre-election ones, as the former have the potential to trigger a regime transition. We argue that pre-election protests can have a significant effect on election outcomes. In particular, they are likely to deepen social cleavages along two dimensions: age and immigrant status. The 2019 social unrest in Hong Kong provides a unique opportunity to evaluate the electoral impact of pre-election protests. Comparing public opinion data related to the 2019 and 2015 District Council elections, we find strong empirical support for our argument, as immigrant status and age are strong predictors of voting choices and voter turnout. Our findings imply that exposure to democratic protests may not help in bridging the gap in political attitudes between immigrants and natives.
Some
α
−
ϕ
-Fuzzy Cone Contraction Results with Integral Type Application
Authors: Rehman Saif Ur , Jabeen Shamoona , Khan Sami Ullah , Jaradat Mohammed M. M.
Published: October 2021

In this paper, we define

α

-admissible and

α

-

ϕ

-fuzzy cone contraction in fuzzy cone metric space to prove some fixed point theorems. Some related sequences with contraction mappings have been discussed. Ultimately, our theoretical results have been utilized to show the existence of the solution to a nonlinear integral equation. This application is also illustrative of how fuzzy metric spaces can be used in other integral type operators.
Embedded Design of 3D Image Intelligent Display System Based on Virtual Reality Technology
Authors: Li Liang
Published: October 2021

The previous 3D image intelligent display system is large in size and poor in accuracy, and the display effect and synchronization cannot meet the needs of users. Aiming at this phenomenon, a 3D image embedded intelligent display system based on virtual reality technology is designed. In recent years, with the rapid development of computer technology, three‐dimensional measurement technology has become increasingly mature, and three‐dimensional information technology has emerged in different fields in real life. With the development of computer science and automatic control technology, more and more intelligent robots appear in production and life. As an important subsystem of intelligent robot systems, the vision system is also receiving more and more attention. The three‐dimensional imaging system projects a structured grating on the surface of the target object, uses a digital sensor to collect the deformed structured light image modulated by the surface of the object, and comprehensively uses image processing technology and precision measurement technology to achieve noncontact three‐dimensional measurement of the object. This method of number of three‐dimensional coordinates has the advantage of not being damaged, high efficiency, high degree of automation, low cost, etc. It has very important significance and broad application prospects for improving product quality and manufacturing efficiency and reducing production costs. Through the investigation and analysis of the existing 3D image intelligent display system embedded, this paper designs and realizes the 3D image intelligent display embedded system, which includes a high‐speed structured light projection module, an embedded image acquisition and processing module, and a 3D reconstruction module. Among them, the embedded 3D imaging image acquisition and processing system is an important part of the embedded 3D measurement system, which provides a certain theoretical and practical basis for future in‐depth research. The experimental results in this article show that the acquisition module takes 1.934 s to obtain the folded phase of the measured object through phase demodulation and the algorithm, while the phase demodulation and unfolding takes 2.068 s. Therefore, the algorithm needs to be further optimized to speed up the image processing speed and reflect the real‐time effect of the system.
A Case of Undifferentiated Carcinoma in a 2-Month Postpartum Reproductive Tract with a Rapid and Fulminant Course
Authors: Yokoyama Yasuhiro , Suzuki Mariko , Sato Yasumasa , Iwagaki Shegenori , Takahashi Yuichiro , Iwata Hitoshi
Published: October 2021

Advanced carcinoma of the lower female reproductive tract is rare during pregnancy and the postpartum period. We here present a case of a 32-year-old Japanese woman, whose entire lower reproductive tract had been invaded by carcinomas as of 2 months after childbirth. She had been infertile, and pregnancy had been established by repeated embryo transfer. The gynecological cancer screening, which included Pap smear tests, was negative during the periods she underwent infertility treatment or during the first trimester. At 26 gestational weeks, the patient noticed uterine contractions concomitant with genital bleeding. Labor progressed slowly and steadily; thus, the pregnancy was ended by cesarean section at 29 weeks. At 2 months after childbirth, the patient experienced increased left abdominal pain and underwent a pelvic examination, revealing multiple pelvic masses and diffuse vaginal tumors causing stenosis. Vaginal tumors were biopsied, and histochemical analysis showed undifferentiated carcinoma with possible adenocarcinoma. Imaging modalities including CT, MRI, and PET-CT suggest that the carcinoma had invaded the entire reproductive tract, especially the uterine body, metastasized into the lungs and the ischial bones, and disseminated onto the peritoneum. She received multiple rounds of chemotherapy but died 6 months after childbirth. Taking into consideration the clinical feature and immunohistochemical profiles of the cancer cells, the endometrium is the most likely origin.
Experimental Study on Mechanical Properties and Seepage Laws of Raw Coal under Variable Loading and Unloading Rates
Authors: Feng Kangwu , Wang Kequan , Zhang Dongming , Yang Yushun
Published: October 2021

This manuscript studied the effects of variable axial pressure loading rate and variable confining pressure unloading rate on the deformation behavior and seepage characteristics of raw coal under alternate loading and unloading of axial pressure and confining pressure. It believed that as axial stress increases, axial strain

ε

1

decreases, radial strain

ε

3

increases, and permeability

k

decreases, and

ε

1

′

,

ε

3

′

, and

k

′

increase when confining pressure is decreases. With the loading of axial stress and the unloading of confining pressure, the variation amplitudes of

ε

1

′

,

ε

3

′

, and

k

′

values reduce gradually. During axial stress loading, the rise in the amplitude of

ε

1

is larger than that of

ε

3

and the reduction in the amplitude of

k

, indicating that

ε

1

is more sensitive to axial stress than

ε

3

and

k

. During unloading of confining pressure, the increase rate of

ε

3

is larger than that of

ε

1

and

k

; also,

ε

3

showed a high sensitivity to confining pressure. In the stage of axial stress loading and confining pressure unloading, the evolution law of deformation and permeability parameters is basically consistent with the change in loading and unloading rate.
Effect of Danqi Buxin Decoction on Chronic Function Indexes and Life Quality in Patients with Chronic Heart Failure of Yang Deficiency Type
Authors: Sheng Yunjiao , Qiu Hong , Chen Sijuan
Published: October 2021

Objective. The purpose was to explore the clinical effect of Danqi Buxin decoction on chronic heart failure (CHF) with yang deficiency and its effect on cardiac function and life quality of patients. Methods. 106 CHF patients with yang deficiency treated in Jinan Municipal Hospital of Traditional Chinese Medicine from February 2019 to February 2020 were selected as the research objects and divided into the treatment group and reference group according to the odd and even admission numbers, with 53 cases in each group. The reference group was treated with routine antiheart failure drugs, while the treatment group was additionally treated with Danqi Buxin decoction to compare the clinical effect and cardiac function changes between the two groups. Results. The clinical effective rate in the treatment group was significantly higher than that in the reference group

P
<
0.05

. The TCM symptom scores at T1, T2, and T3 in the treatment group were significantly higher than those in the reference group

P
<
0.05

. After treatment, the LVEDV levels in both groups were significantly higher than those before treatment, while the BNP levels were significantly lower than those before treatment

P
<
0.001

. The LVEDV level in the treatment group after treatment was higher than that in the reference group, while the BNP level in the treatment group was significantly lower than that in the reference group

P
<
0.001

. The life quality scores in the treatment group after treatment were significantly higher than those in the reference group

P
<
0.05

. Conclusion. Danqi Buxin decoction on the basis of conventional drugs can significantly improve the cardiac function and life quality of CHF patients with yang deficiency type. Its further research is helpful to establish a good treatment plan for CHF patients.
GDF‐11 Protects the Traumatically Injured Spinal Cord by Suppressing Pyroptosis and Necroptosis via TFE3‐Mediated Autophagy Augmentation
Authors: Xu Yu , Hu Xinli , Li Feida , Zhang Haojie , Lou Junsheng , Wang Xingyu , Wang Hui , Yin Lingyan , Ni Wenfei , Kong Jianzhong , Wang Xiangyang , Li Yao , Zhou Kailiang , Xu Hui
Published: October 2021

Spinal cord injury (SCI) refers to a major worldwide cause of accidental death and disability. However, the complexity of the pathophysiological mechanism can result in less‐effective clinical treatment. Growth differentiation factor 11 (GDF‐11), an antiageing factor, was reported to affect the development of neurogenesis and exert a neuroprotective effect after cerebral ischaemic injury. The present work is aimed at investigating the influence of GDF‐11 on functional recovery following SCI, in addition to the potential mechanisms involved. We employed a mouse model of spinal cord contusion injury and assessed functional outcomes via the Basso Mouse Scale and footprint analysis following SCI. Using western blot assays and immunofluorescence, we analysed the levels of pyroptosis, autophagy, necroptosis, and molecules related to the AMPK‐TRPML1‐calcineurin signalling pathway. The results showed that GDF‐11 noticeably optimized function‐related recovery, increased autophagy, inhibited pyroptosis, and alleviated necroptosis following SCI. Furthermore, the conducive influences exerted by GDF‐11 were reversed with the application of 3‐methyladenine (3MA), an autophagy suppressor, indicating that autophagy critically impacted the therapeutically related benefits of GDF‐11 on recovery after SCI. In the mechanistic study described herein, GDF‐11 stimulated autophagy improvement and subsequently inhibited pyroptosis and necroptosis, which were suggested to be mediated by TFE3; this effect resulted from the activity of TFE3 through the AMPK‐TRPML1‐calcineurin signalling cascade. Together, GDF‐11 protects the injured spinal cord by suppressing pyroptosis and necroptosis via TFE3‐mediated autophagy augmentation and is a potential agent for SCI therapy.
Establishment of Thermal Ductile Fracture Criterion for As‐Cast 42CrMo Steel and Its Application in Hot Ring Rolling Process
Authors: Chen Yuanyuan , Qi Huiping , Li Yongtang , Hua Lin
Published: October 2021

The casting‐rolling compound forming process of ring parts is an advanced plastic forming technology that has been developed due to the merits of high efficiency and energy and material saving. However, cracks often occur during the hot ring rolling process, especially at the edges of the ring parts, which severely affects the forming quality. To predict and try to avoid the occurrence of cracks in the casting‐rolling compound forming process of ring parts, the high‐temperature fracture behaviors of as‐cast 42CrMo steel were investigated by thermodynamic experiment method. The high‐temperature tensile tests were carried out using the Gleeble‐3500D thermomechanical simulator at various temperatures and strain rates. Stress‐strain curves and fracture morphology were examined, through which the sensitivity of stress to temperature and strain rate and the effect of dynamic recrystallization and cavity evolution on fracture were found. The law of critical fracture strains was analyzed, and the model of critical fracture strain as a function of temperature and strain rate was established. Based on Oyane criterion, the thermal ductile fracture criterion was established in conjunction with the model of critical fracture strain. By embedding this thermal damage model into the finite element (FE) model for hot ring rolling of an as‐cast 42CrMo ring, the damage prediction for this process was realized, and the thermal ductile fracture criterion was proved to be reliable. From the FE results for hot ring rolling, mechanism of damage and fracture in the hot ring rolling process was analyzed. The damage threshold Cf is small, and the damage ratio D is large at the top and bottom edges of the inner surface area of the ring, which have the greatest propensity to cracking in the course of hot ring rolling. This is of great significance in terms of improving the forming quality of ring parts in the casting‐rolling compound forming process.
Formulation and development of Serratiopeptidase enteric coated tablets and analytical method validation by UV Spectroscopy
Authors: Panthi Vijay Kumar , Jha Saurav Kumar , Chaubey Raghvendra , Pangeni Rudra
Published: October 2021

Serratiopeptidase (SRP) is a proteolytic enzyme that emerged as one of the most potent anti-inflammatory and analgesic drugs. The purpose of the present study was to formulate and evaluate enteric-coated tablets for SRP and investigate their stability using a simple and validated analytical method by ultraviolet (UV) spectroscopy. The colloidal silicon dioxide (2.50%), sodium starch glycolate (3.44%), and crospovidone (2.50%) were used as appropriate excipients for the development of core part of tablets. To protect the prepared tablets from acidic environment in the stomach, white shellac, castor oil, HPMC phthalate 40, and ethyl cellulose were used. The seal coating and enteric coating attained were 2.75% and 6.74%, respectively. SRP was found to be linear at 265 nm in the concentration range of 25–150 µg/mL. The results revealed that our developed method was linear (R2 = 0.999), precise (RSD % = 0.133), and accurate (% recovery = 99.96–103.34). The formulated SRP tablets were found to be stable under accelerated conditions as well as under room temperature for 6 months (assay %: >97.5%). The in vitro drug release study demonstrated that enteric-coated tablets were able to restrict SRP release in both acidic environments: 0.1 N HCl and simulated gastric fluid (pH 1.2). Moreover, at 60 minutes, the formulated SRP tablets revealed 13.0% and 8.98% higher drug release in phosphate buffer (pH 6.8) and simulated intestinal fluid (pH 6.8), respectively, compared to the marketed tablet formulation. This study concludes that enteric-coated tablets of SRP with higher drug release in the intestine can be prepared and examined for their stability using validated analytical technique of UV spectroscopy.
Ensaios de Anna Akhmátova sobre “O conto do galo de ouro” de Púchkin: entre a vida e a arte
Authors: Oliveira Deise de
Published: October 2021

Akhmátova escreveu − e reescreveu − diversos ensaios sobre Púchkin durante sua vida. Dois de seus textos mais completos e que mostram uma outra faceta da poeta são sobre o “conto do galo de ouro” do autor. Este artigo tem como objetivo mostrar de que maneira o referido conto de Púchkin pode não apenas ser considerado autobiográfico, mas também um instrumento usado pela poeta para fazer uma comparação com suas próprias vida e trajetória pela literatura.
E por falar em poesia: especificidades tradutórias da lírica de Maiakóvski
Authors: Mei Letícia
Published: October 2021

O presente artigo propõe a tradução poética de “Tetráptico”, prólogo do poema “Nuvem de Calças” (1914-1915), de Vladímir V. Maiakóvski, num esforço de proporcionar ao leitor brasileiro a experiência estética de uma poesia na qual som e sentido fundem-se de modo eloquente. A tradução integral e direta do russo para o português brasileiro é inédita no Brasil, e pretende ampliar, em nosso país, a difusão da obra lírica de um dos mais importantes poetas russos. À luz do arcabouço teórico de tradutores consagrados, tais como Boris Schnaiderman, Mário Laranjeira, Paulo Henriques Britto dentre outros, o objetivo é demonstrar como a teoria caminha lado a lado com a prática para que se obtenha um objeto poético autônomo em língua portuguesa.
Mapeamento e análise de dicionários e glossários online sobre sustentabilidade e proposta de um glossário bilíngue
Authors: Prata Vanessa Domingues , Camargo Diva Cardoso de
Published: October 2021

Este trabalho visa fazer uma mapeamento e uma análise de glossários e dicionários online da área de sustentabilidade, com o objetivo de propormos um glossário bilíngue desse tema na direção português-inglês. O levantamento foi realizado por meio de buscas na internet, tanto em português como em inglês, utilizando termos como “glossário de sustentabilidade”, “dicionário de sustentabilidade”, “glossário bilíngue de sustentabilidade” e “dicionário bilíngue de sustentabilidade”. Para o escopo deste artigo, foram selecionados 12 produtos terminográficos disponíveis em portais de veículos de comunicação e/ou organizações ligadas à área de sustentabilidade, descartando, em geral, os glossários e dicionários em páginas pessoais ou de indústrias e demais empresas.
Poétique du traduire, de Henri Meschonnic
Authors: Freire Rafael Augusto Duarte
Published: October 2021

Meschonnic, H. Poétique du traduire. Paris: Verdier, 1999. 480 p. ISBN : 978-2864323075
Autotradução e a autobiografia de Nabókov
Authors: Dadashova Shafag
Published: October 2021

Este artigo busca explorar a identidade própria de autores em autobiografias autotraduzidas por meio da leitura de textos de Nabókov em duas línguas, apresentados de três formas diferentes com três títulos diversos. A autobiografia de Nabokov é, por um lado, uma tradução dupla, e, por outro, três life writings diferentes. A primeira versão foi escrita em inglês e é intitulada Conclusive evidence. Nela, o autor parece estar tentando prover evidências para seu lugar em uma cultura estrangeira. O segundo livro é a tradução do supracitado, mas feita pelo próprio autor, que teve uma abordagem muito criativa nesse processo, adaptando-o corajosamente a um novo público. Essa versão russa foi intitulada Druguie beregá, e nela Nabókov fala a seus compatriotas sobre sua vida em outras cercanias. O livro não inclui todas as partes da primeira versão, e o autor escolhe informações convenientes para causar efeito sobre o espírito russo. A terceira versão, Speak memory, é a forma mais madura de life writing do autor, e investiga sua identidade em duas línguas, mas com fontes quase idênticas para fomentar seu talento. O artigo analisa as buscas de identidade nas autobiografias de Nabókov, comparando-as onde se faz relevante.
Diário de um escritor (1873), de Fiódor Dostoiévski: notas de uma tradução
Authors: Mountian Daniela
Published: October 2021

Pretende-se discutir no artigo alguns aspectos, dilemas e paradoxos do processo de tradução de Diário de um escritor (1873), coluna que Fiódor Dostoiévski mantinha na revista O cidadão (Grajdanin).
Association Between Sleep Disturbances With Neurodevelopmental Problems and Decreased Health‐Related Quality of Life in Children With Fontan Circulation
Authors: Knobbe Kirstin , Partha Meghana , Seckeler Michael D. , Klewer Scott , Hsu Chiu‐Hsieh , Edgin Jamie , Morgan Wayne J. , Provencio‐Dean Natalie , Lopez Silvia , Parthasarathy Sairam , Combs Daniel
Published: October 2021

Background

Children with Fontan circulation are known to be at increased risk for neurodevelopmental problems and decreased health‐related quality of life (HRQOL), but many factors that may contribute to this risk are unknown. Sleep disturbances may be one previously unidentified factor that contributes to this risk.

Methods and Results

We analyzed data from the Pediatric Heart Network Fontan cross‐sectional study to evaluate associations between a parent or child report of sleep disturbance with reported neurodevelopmental concerns and HRQOL in 558 children with Fontan circulation. Parent‐reported sleep disturbance was present in 11% of participants and child‐reported sleep disturbance was present in 15%. Parent‐reported sleep disturbance was associated with a significantly higher risk of attention problems, anxiety, depression, behavioral problems, and developmental delay (
P
<0.001 for all). Similarly, parent‐reported disturbance was associated with decreased HRQOL on both parent and child‐reported HRQOL (
P
<0.001 for most domains). Child‐reported sleep disturbances were associated with increased odds of anxiety, depression, and attention problems as well as worse HRQOL. These associations were present even after adjustment for cardiac, demographic, and socioeconomic factors that may affect HRQOL and neurodevelopmental status.

Conclusions

Sleep disturbances in children with Fontan circulation are associated with an increased risk of neurodevelopmental problems as well as reduced HRQOL compared with those without sleep disturbance. Better understanding of sleep disturbances is needed in children with Fontan circulation, as sleep disturbances may represent a reversible cause of neurodevelopmental problems and decreased HRQOL in this population.
Proposal of Arktourella gen. nov., a new genus of the family Normanellidae Lang 1944 (Copepoda: Harpacticoida) from the Province of Cortez
Authors: GÓMEZ SAMUEL , NAZARI FATEMEH
Published: October 2021

A new genus, Arktourella gen. nov., is proposed to accommodate a new member of the harpacticoid family Normanellidae, A. margarethae gen. et sp. nov., from a polluted estuary in north-western Mexico. The new genus was attributed to the laophontoidean family Normanellidae on account of the lack of outer spinous processes on the second antennulary segment, one abexopodal seta on the antennary allobasis, four setae on the one-segmented antennary exopod, endopod of first swimming leg two-segmented with first segment elongated and with two distal elements on second segment, endopods of second to fourth legs two-segmented, distal setae on the male second endopodal segment of second and third legs reduced, and outer spine of the male second endopodal segment of third leg fused to segment. The new, so far monotypic genus, differs from the other normanellid genera in the presence of four elements on the third exopodal segment of the first leg, and two outer spines on the third exopodal segment of second to fourth legs. No synapomorphies were observed for Arktourella gen. nov. and Normanella, but they are unique within the Normanellidae in that the mandibular basis and endopod are not fused. Maximum parsimony analysis and Bayesian inference using 59 morphological characters to assess the relationships between the genera of the family Normanellidae confirmed the affinity of Arktourella gen. nov. and Normanella, and their sister group relationship with Sagamiella. Paranaiara and Pseudocletodes were shown consistently to be closely related and are the sister taxa of Normanella-Arktourella gen. nov.-Sagamiella. Arktourella gen. nov., Paranaiara and Pseudocletodes share the presence of a large spinulose spine on the fifth and sixth segments of the female antennule, but its significance is not clear. Additionally, we propose a key to the genera of the Normanellidae.
Seen only once: an evolutionarily distinct species of Toadlet (Uperoleia: Myobatrachidae) from the Wessel Islands of northern Australia
Authors: CATULLO RENEE A. , KEOGH J. SCOTT
Published: October 2021

There is a high rate of recent species discovery in remote regions of northern Australia, especially for amphibians and reptiles. The Wessel Islands, located in the northeastern corner of the Northern Territory, has recently been identified as a region of high species and phylogenetic endemism based on samples collected during the sole reptile and amphibian survey there in 1993. Using a phylogenetic approach, we describe a new, evolutionarily distinct species of Uperoleia endemic to the Wessel Islands. This description is based on three specimens, one female and two juveniles, which represent the only confirmed vouchers of the species. Due to the low number of specimens, this new species cannot be diagnosed morphologically from other closely related Uperoleia, and nothing is currently known about the mating call or basic biology. The discovery of this species provides further evidence for the islands’ importance as an area of endemism and identifies an urgent need for further surveys to document the unique biological diversity of the Wessel Islands.
Observations of Strongly Modulated Surface Wave and Wave Breaking Statistics at a Submesoscale Front
Authors: VreĆica Teodor , Pizzo Nick , Lenain Luc
Published: October 2021

Ocean submesoscale currents, with spatial scales on the order of 0.1–10 km, are horizontally divergent flows, leading to vertical motions that are crucial for modulating the fluxes of mass, momentum, and energy between the ocean and the atmosphere, with important implications for biological and chemical processes. Recently, there has been considerable interest in the role of surface waves in modifying frontal dynamics. However, there is a crucial lack of observations of these processes, which are needed to constrain and guide theoretical and numerical models. To this end, we present novel high-resolution airborne remote sensing and in situ observations of wave–current interaction at a submesoscale front near the island of O’ahu, Hawaii. We find strong modulation of the surface wave field across the frontal boundary, including enhanced wave breaking, that leads to significant spatial inhomogeneities in the wave and wave breaking statistics. The nonbreaking (i.e., Stokes) and breaking induced drifts are shown to be increased at the boundary by approximately 50% and an order of magnitude, respectively. The momentum flux from the wave field to the water column due to wave breaking is enhanced by an order of magnitude at the front. Using an orthogonal coordinate system that is tangent and normal to the front, we show that these sharp modulations occur over a distance of several meters in the direction normal to the front. Finally, we discuss these observations in the context of improved coupled models of air–sea interaction at a submesoscale front.
Perceptions of Postpartum Teaching and Knowledge of Warning Signs among Black Mothers
Authors: Adams Yenupini Joyce , Young Jessica
Published: October 2021

The postpartum period is the time of highest risk for maternal death. Quality postpartum education is important to minimize risk. We assessed the postpartum education given to Black mothers on post-birth warning signs by conducting a cross-sectional survey of 80 Black women who had given birth in the previous 12 months. Participants completed an electronic questionnaire, and data were analyzed using descriptive and regression models. On average, educational needs were reported by 20 participants as being unmet, 27 as being met, and 30 as being more than met. Only 54.4% of the participants reported receiving education about postpartum warning signs. The percentage of participants able to identify each sign ranged from 11.4% to 35.4%. No participants identified more than five of the nine warning signs, and 25% identified none. Knowledge of post-birth warning signs was significantly associated with the delivery hospital, household income, and education on warning signs before discharge.
The effect of social interaction quantity and quality on depressed mood and loneliness: A daily diary study
Authors: Kuczynski Adam M. , Halvorson Max A. , Slater Lily R. , Kanter Jonathan W.
Published: October 2021

Background

Concerns about the possible effects of social distancing during the COVID-19 pandemic highlighted several gaps in our knowledge about the association between social interactions and mental health. The current study aimed to characterize the unique effect of social interaction quantity and quality on daily depressed mood and loneliness and to identify the degree to which these processes operate at the within-person and between-person levels of analysis.

Methods

A community sample of 515 adults was recruited to participate in 75 days of daily surveys. Participants reported on daily feelings of loneliness, depressed mood, social interaction frequency, engagement in vulnerable self-disclosure, and perceived responsiveness. Linear mixed models were used to identify the effect of daily social interaction quantity and quality on loneliness and depressed mood and to characterize the degree to which these effects varied across individuals.

Results

Social interaction quantity and perceived responsiveness were negatively associated with depressed mood and loneliness at the within-person level of analysis. Perceived responsiveness was also negatively associated with depressed mood and loneliness at both the within-person and between-person levels of analysis. Random slopes analysis revealed substantial heterogeneity in the within-person effects.

Limitations

The non-experimental design of this study precludes drawing causal conclusions. Furthermore, demographic and/or geographic differences in the observed effects may limit generalization.

Conclusions

Engaging in more frequent, high-quality interactions may protect against daily depressed mood and loneliness despite one’s average level of these variables. Future research is needed to establish causality and identify the degree to which these findings generalize across samples and time.