bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation and Characterization of Magnesium Oxide Nanoparticles and Its Application for Photocatalytic Removal of Rhodamine B and Methylene Blue Dyes
Authors: Pachiyappan Jayakaran , Gnanansundaram Nirmala , Sivamani Selvaraju , Sankari Naveen Prasad Balakrishna Pillai , Senthilnathan Nachiappan , Kerga Gizachew Assefa
Published: July 2022

In this research work, MgO nanoparticles were synthesized by a single‐step coprecipitation approach using Kappaphycus alvarezii extract as stabilizer. The synthesized MgO nanoparticles exhibit cubic crystal structure, which were confirmed by XRD and FTIR. The purity of MgO nanomaterials was confirmed by P‐XRD. The diffraction crests of MgO nanomaterials are in accordance with customary patterns of pure MgO (JCPDS No.00–004‐0821). Electron microscopic analysis demonstrated the appearance of MgO nanoflakes. The UV‐DRS was used to calculate the optical band gap of MgO nanoparticles and found to be 4.71 eV. MgO nanoparticles have substantial photocatalytic activity for the deterioration of rhodamine B (RhB) and methylene blue (MB) dyes under visible light irradiation. The experimental data fitted first‐order kinetics and around >95% degeneration of both dyes was achieved by photocatalysis using synthesized MgO nanoparticles. Thus, the data obtained from this research can effectively be utilized in large‐scale industrial applications during wastewater treatments.
Optimization Algorithm of Communication Resource Allocation in a Complex Network Based on an Improved Neural Network
Authors: Zhang Haomiao , Liu Qing
Published: July 2022

The traditional optimization algorithm of communication resource allocation in a complex network has the disadvantage of weak antijamming ability, and the communication quality decreases obviously when the number of users is large. In China’s large urban network applications, mobile phones and other networks can have problems such as reduced network efficiency when there are more access users at some communication base stations, thus affecting user network usage. An optimization algorithm of communication resource allocation in the complex network based on an improved neural network is proposed. Increase inertia improves the traditional BP neural network algorithm, using the average path length, clustering coefficient, and connectivity distribution index analysis of the complex network; the improved Hopfield neural network is utilized to confirm each user volume size; it is concluded that their users are able to get the number of subchannels, through the instantaneous channel coarse pair gain dynamic channel allocation, calculating bit load matrix at the same time, minimize transmission power, and achieve bit loading and power allocation and communication resource allocation optimization. Experimental results show that the proposed method has better application performance by introducing the improved neural network and suppressing the external interference on the basis of enhancing the communication effect.
Study on the Influence of Excavation Unloading on Pile Depth in Sandy Soil
Authors: Zhanjun Huang , Yi Zou , Haibin Ding , Xinhuan Liang , Bitang Zhu , Yalong Jiang
Published: July 2022

With the development of urban construction, uplift pile has been widely used in underground structure bearing buoyancy. The pile is buried deep underground, and the foundation pit is excavated on the pile foundation, the stress redistribution of the soil after the foundation pit excavation will reduce the lateral stress of the pile at the bottom of the pit, resulting in the reduction of friction resistance, but this effect is limited to a certain depth at the bottom of the foundation pit. Referring to the unloading influence depth corresponding to the vertical unloading coefficient in the spring back calculation of foundation pit and introducing the unloading influence depth corresponding to the horizontal unloading coefficient, it is deduced that the relationship between the horizontal unloading coefficient and the vertical unloading coefficient is based on the friction angle. Based on the bearing capacity control and numerical simulation, it is determined that the corresponding depth when the horizontal unloading coefficient is 0.95 is the unloading influence depth. The depth to width ratio of excavation has a great influence on unloading influence depth, and the internal friction angle of soil has little influence on unloading influence depth, while the influences of pile diameter and pile-soil friction coefficient can be ignored. The formula of unloading influence depth is derived in this paper. Comparing the unloading influence depth of sand and soft soil, the unloading influence depth of sand is greater than that of soft soil.
Ca2+/Calmodulin-Dependent Protein Kinase II Regulation by Inhibitor of RIPK3 Protects against Cardiac Hypertrophy
Authors: Zhang Jingjing , Qian Jianan , Cao Ji , Wang Xue , Zhang Wei , Gu Xiaosong
Published: July 2022

The activity of Ca2+/calmodulin-dependent protein kinase II δ (CaMKII δ) is central to the mechanisms of cardiovascular diseases. Receptor-interacting protein kinase 3- (RIPK3-) mediated necroptosis has been reported to contribute to cardiac dysfunction. However, the potential protective role of inhibition of RIPK3, a regulator of CaMKII, on cardiac hypertrophy remains unclear. The present study is aimed at investigating how the RIPK3 inhibitor GSK’872 regulates CaMKII activity and exploring its effect on hypertrophic cardiomyopathy (HCM). Wild-type (WT) and RIPK3 gene knockout (RIPK3-/-) mice were implanted subcutaneously with Alzet miniosmotic pumps (200 μL) and perfused with angiotensin II (AMP-AngII) to induce cardiac hypertrophy. After WT mice were induced by AngII for 72 hours, they were injected with GSK’872 with an intraperitoneal (IP) dose of 6 mg/kg once a day for two weeks. After this, they were physiologically examined for Echocardiography, myocardial injury, CaMKII activity, necroptosis, RIPK3 expression, mixed lineage kinase domain-like protein (MLKL) phosphorylation, and mitochondrial ultrastructure. The results indicated that deletion of the RIPK3 gene or administration of GSK’872 could reduce CaMKII activity, alleviate oxidative stress, reduce necroptosis, and reverse myocardial injury and cardiac dysfunction caused by AngII-induced cardiac hypertrophy in mice. The present study demonstrated that CaMKII activation and necroptosis augment cardiac hypertrophy in a RIPK3-dependent manner, which may provide therapeutic strategies for HCM. RIPK3 inhibitor GSK’872 has a protective effect on cardiac hypertrophy and could be an efficacious targeted medicine for HCM in clinical treatment.
Effect of Foot and Hand Massage on Abdominal Pain of Cesarean Section Incision under Ultrasound Guidance
Authors: Wang Yu Qing , Jiang Rongrong , Pan Jianmin
Published: July 2022

In order to relieve the pain of incision after cesarean section, a method of foot and hand massage for abdominal pain of cesarean section incision under ultrasound guidance was proposed in this paper. In this paper, the experimental control method and retrospective analysis were used to relax the patients through massage, so that the pregnant women could focus on the reaction caused by hand and foot massage, distract their attention, and reduce the pain. The results showed that 60 cases of puerpera after cesarean section were divided into two groups with 30 cases in each group. The control group was only given routine care. The intervention group received 20 min hand and foot massage on the basis of routine care. The visual analog scale (VAS) of pain before, immediately after, 30 min after, and 60 min after massage in the intervention group was evaluated and recorded, and the VAS scores of the control group at the corresponding time points were recorded. The VAS score of the intervention group at each time point after massage was significantly lower than that before massage (

P
<
0.05

), and the VAS score of the intervention group at each time point was significantly lower than that of the control group (

P
<
0.01

). Hand and foot massage can effectively relieve incision pain after cesarean section.
Liver Regeneration: Changes in Oxidative Stress, Immune System, Cytokines, and Epigenetic Modifications Associated with Aging
Authors: Tang Chaoliang , Chen Hao , Jiang Lai , Liu Lianxin
Published: July 2022

The regenerative capacity of the liver decreases with increase in age. In recent years, studies in mice have found that the regenerative capacity of the liver is associated with changes in the immune system of the liver, cytokines in the body, aging-related epigenetic modifications in the cell, and intracellular signaling pathways. In the immune system of the aging liver, monocytes and macrophages play an important role in tissue repair. During tissue repair, monocytes and macrophages undergo a series of functional and phenotypic changes to initiate and maintain tissue repair. Studies have discovered that knocking out macrophages in the liver during the repair phase results in significant impairment of liver regeneration. Furthermore, as the body ages, the secretion and function of cytokines undergo a series of changes. For example, the levels of interleukin-6, transforming growth factor-alpha, hepatocyte growth factor, and vascular endothelial growth factor undergo changes that alter hepatocyte regulation, thereby affecting its proliferation. In addition, body aging is accompanied by cellular aging, which leads to changes in gene expression and epigenetic modifications. Additionally, this in turn causes alterations in cell function, morphology, and division and affects the regenerative capacity of the liver. As the body ages, the activity of associated functional proteins, such as CCAAT-enhancer-binding proteins, p53, and switch/sucrose nonfermentable complex, changes in the liver, leading to alterations in several signaling pathways, such as the Hippo, PI3K-Akt, mTOR, and STAT3 pathways. Therefore, in recent years, research on aging and liver regeneration has primarily focused on the immune system, signaling pathways, epigenetic changes of senescent cells, and cytokine secretion in the liver. Hence, this review details the roles of these influencing factors in liver regeneration and impact of aging-related factors.
Tanz-Indicator: A Novel Framework for Detection of Perso-Arabic-Scripted Urdu Sarcastic Opinions
Authors: Gul Shabana , Khan Rafi Ullah , Ullah Mohib , Aftab Roman , Waheed Abdul , Wu Tsu-Yang
Published: July 2022

Automatic sarcasm detection in textual data is a crucial task in sentiment analysis. This problem is complex because sarcastic comments usually carry the opposite meaning and are context-driven. The issue of sarcasm detection in comments written in Perso-Arabic-scripted Urdu text is even more challenging due to limited online linguistic resources. In this research, we proposed Tanz-Indicator, a lexicon-based framework to detect sarcasm in the user comments posted in Perso-Arabic Urdu language. We use a lexicon of over 3000 sarcastic tweets and 100 sarcastic features for experimentation. We also train two machine learning models with the same data to compare the performance of the lexicon-based model and machine learning-based model. The results show that the lexicon-based model correctly identified 48.5% sarcastic and 23.5% nonsarcastic tweets with the recall of 69.6% and 87.9% precision. The recall rate of Naïve Bayes and SVM-based machine learning models was 20.1% and 24.4%, respectively, with an overall accuracy of 65.2% and 60.1%, respectively.
Design of IT Infrastructure Multicloud Management Platform Based on Hybrid Cloud
Authors: Cheng Wei , Feng Hanzao , Liang Gaoxiang
Published: July 2022

IT infrastructure has multiple master servers wherein its external and internal data fail to be controlled at the same time, resulting in low management efficiency of IT infrastructure cloudy data. Also, the platform information access security management becomes extremely difficult. Therefore, a multicloud management platform for IT infrastructure based on hybrid cloud is designed. The overall architecture and cloud structure design of the cloud management platform is implemented using two master servers, control platform internal and external IT infrastructure cloud data at the same time. The framework also ensures desensitized access to IT infrastructure resources. Also, a cloud data load balancing adaptation process and IT infrastructure cloud management process are designed. The fuzzy information feature extraction method is used to extract the association information of IT infrastructure cloud management and reconstruction of the association rules of frequent item sets of IT infrastructure information. The experimental results show that the cloud link utilization is about 90%, the cloud management delay is lower than 1.1 ms, and the cloud management error is less than 2% in 400 iterations. Also, the accuracy of IT infrastructure packet forwarding is higher than that of the state-of-the art frameworks.
Proliferation and Self-Renewal Are Differentially Sensitive toNRASG12VOncogene Levels in an Acute Myeloid Leukemia Cell Line
Authors: Kurata Morito , Antony Marie Lue , Noble-Orcutt Klara E. , Rathe Susan K. , Lee Yoonkyu , Furuno Hidehiro , Ishibashi Sachiko , Ikeda Masumi , Yamamoto Kouhei , Kitagawa Masanobu , Largaespada David A. , Sachs Zohar
Published: July 2022

NRAS proteins are central regulators of proliferation, survival, and self-renewal in leukemia. Previous work demonstrated that the effects of oncogenic NRAS in mediating proliferation and self-renewal are mutually exclusive within leukemia subpopulations and that levels of oncogenic NRAS vary between highly proliferative and self-renewing leukemia subpopulations. These findings suggest that NRAS activity levels may be important determinants of leukemic behavior. To define how oncogenic NRAS levels affect these functions, we genetically engineered an acute myeloid leukemia (AML) cell line, THP-1, to express variable levels of NRASG12V. We replaced the endogenous NRASG12D gene with a tetracycline-inducible and dose-responsive NRASG12V transgene. Cells lacking NRASG12V oncoprotein were cell-cycle arrested. Intermediate levels of NRASG12V induced maximal proliferation; higher levels led to attenuated proliferation, increased G1 arrest, senescence markers, and maximal self-renewal capacity. Higher levels of the oncoprotein also induced self-renewal and mitochondrial genes. We used mass cytometry (CyTOF) to define the downstream signaling events that mediate these differential effects. Not surprisingly, we found that the levels of such canonical RAS-effectors as pERK and p4EBP1 correlated with NRASG12V levels. β-Catenin, a mediator of self-renewal, also correlated with NRASG12V levels. These signaling intermediates may mediate the differential effects of NRASG12V in leukemia biology. Together, these data reveal that oncogenic NRAS levels are important determinants of leukemic behavior explaining heterogeneity in phenotypes within a clone. This system provides a new model to study RAS oncogene addiction and RAS-induced self-renewal in AML.

Implications:

Different levels of activated NRAS may exert distinct effects on proliferation and self-renewal.
The Mediating Role of Health-Promoting Behaviors on the Association between Symptom Severity and Quality of Life among Chinese Individuals with Mental Illness: A Cross-Sectional Study
Authors: Mo Phoenix K.H. , So Georgina Y.K. , Lu Zhihui , Mak Winnie W.S.
Published: July 2022

Introduction: Research has shown that people with mental illnesses (PMI) are found to show poorer lifestyle than the general population. Yet, the effect of their psychiatric symptoms in the association between gender difference, health-promoting behaviors, and quality of life have received little attention. The present study examined the association between symptom severity, health-promoting behaviors, and quality of life among PMI in Hong Kong. Gender difference on the association between these variables was also examined. Method: A cross-sectional survey was conducted among 591 individuals with DSM-IV-TR Axis 1 diagnosis recruited from the community. Results: Results from MANOVA showed that PMI with more severe psychiatric symptoms engaged in a significantly lower level of health-promoting behaviors and reported a lower level of quality of life. Results from structural equation modeling showed that health-promoting behaviors mediated the association between psychiatric symptoms and quality of life. Multigroup analyses showed that the association between psychiatric symptoms and health-promoting behaviors was stronger among female participants, while the association between health-promoting behaviors and quality of life was stronger among male participants. Discussion/Conclusion: Despite clear evidence suggesting symptom severity to be negatively correlated with quality of life, the underlying mechanism has been less clear. There is a need to promote health-promoting behaviors in order to improve the quality of life of PMI. Gender-specific interventions are warranted.
Efeitos do exercício físico na qualidade de vida e na memória de usuários de drogas
Authors: Appel Marcia Helena , Machado Marcelo de França , Alves Fabiana Bucholdz Teixeira
Published: July 2022

Objetivo: analisar as alterações da capacidade cardiorrespiratória, percepção da qualidade de vida e memória de usuários de álcool e outras drogas em tratamento, em uma Comunidade Terapêutica, após a aplicação de um Programa de Exercícios Físicos (PEF). Método: participaram 33 homens adultos, com média de idade de 37 anos (±6,32), distribuídos em dois grupos: grupo de intervenção (n=19), que participaram do Programa de Exercícios Físicos, e grupo controle (n=14), que não participaram. As avaliações foram feitas no início e no final das oito semanas do Programa de Exercícios Físicos. Resultados: o aumento do Volume Máximo de Oxigênio Metabolizado pelo Organismo no grupo que participou do Programa de Exercícios Físicos foi aproximadamente 13 vezes maior que no grupo-controle. Na memória, os participantes do Programa de Exercícios Físicos obtiveram um ganho a mais de aproximadamente 16% quando comparados aos do grupo-controle. Na percepção da qualidade de vida, as diferenças foram, em média, 16% maiores no grupo que participou do Programa de Exercícios Físicos, chegando a 21% no domínio referente à percepção do ambiente que estavam. Conclusão: um Programa de Exercícios Físicos colabora positivamente na reabilitação dos processos cognitivos de aprendizagem e memória e na percepção da qualidade de vida dos indivíduos em tratamento.
População em situação de rua e o acesso aos serviços de saúde: concepções e determinantes
Authors: Nascimento Tayrine Huana de Sousa , Santos Jomábia Cristina Gonçalves dos , Sampaio Marília Batista , Teixeira Adguinoele da Costa , Brito Elka Priscyla Miranda
Published: July 2022

Objetivo: compreender a percepção da população em situação de rua acerca do acesso aos serviços de saúde. Método: o estudo possui abordagem qualitativa de cunho descritivo. Contou com a participação de nove pessoas em situação de rua, selecionadas através da amostragem aleatória simples, com coleta de dados a partir de uma entrevista semiestruturada e análise de conteúdo. Resultados: os achados evidenciaram que a população em situação de rua tem um acesso precário aos serviços de saúde, uma vez que foram relatadas barreiras como a falta de conhecimento, de documentação e pouco ou nenhum acesso a métodos preventivos. Os serviços mais utilizados foram os de urgência e emergência. Conclusão: a partir da percepção dessa população, torna-se emergente o rompimento das barreiras físicas e burocráticas que tanto restringem esse acesso, afim de que haja uma melhoria na qualidade da assistência.
Discurso das pessoas internadas por crise psiquiátrica sobre credibilidade e autonomia no tratamento
Authors: Fonsêca Marcos Aurélio , Santos Jamile Ferreira dos
Published: July 2022

Objetivo: descrever a percepção das pessoas em crise psiquiátrica sobre a credibilidade do discurso que emitem e sua relação com a promoção da autonomia no tratamento. Método: abordagem qualitativa, descritivo-exploratória, a partir de entrevistas semiestruturadas, realizadas em outubro e novembro de 2019, com 12 homens internados em um instituto psiquiátrico público em Minas Gerais, Brasil, selecionados por conveniência. A pesquisa cumpriu os princípios éticos e foi aprovada em setembro de 2019, pelo parecer 3.566.943. Utilizou-se a técnica de análise de conteúdo temática, para tratar os dados. Resultados: os participantes referiram percepção punitiva em relação à internação e tratamento, desvalorização de suas falas na construção do Projeto Terapêutico Singular e desconhecimento sobre as implicações dessas percepções para o trabalho da equipe que os acompanhava e para a instituição. Conclusão: apesar da reconfiguração do modelo de assistência em saúde mental, o discurso dos usuários ainda está marcado por pouca credibilidade e baixa autonomia no processo terapêutico. Ademais, no âmbito hospitalar, têm-se mantido os desafios para a consolidação do cuidado multidisciplinar e para a participação do usuário em seu tratamento.
Percepções de homens sobre a influência da família no uso de substâncias psicoativas
Authors: Oliveira Gabriela Andrade de , Almeida Gabrielly Liz de , Abrocesi Solange
Published: July 2022

Objetivo: compreender, sob a perspectiva do usuário, a influência da família no uso de substâncias psicoativas. Metodologia: pesquisa descritiva com abordagem qualitativa. Os participantes foram 16 residentes de uma Comunidade Terapêutica, de sexo masculino, maiores de 18 anos. A coleta de informações deu-se por meio de entrevistas direcionadas por um roteiro desenvolvido pelas autoras. Resultados: foi utilizada a Análise Temática. A discussão se deu por meio da compreensão de literaturas que abordam a participação da família nos transtornos relacionados ao uso de substâncias. Conclusão: as relações familiares mostraram-se preditoras na iniciação do uso das drogas, como também na busca pelo tratamento. Identificou-se um padrão de repetição de violência, em que o adicto tende a repetir o comportamento de seus semelhantes, resultando em um ciclo de sofrimento familiar. Os conhecimentos obtidos por meio deste estudo possibilitam aos enfermeiros reconhecer as origens emocionais e corroboram com a visão holística para o cuidado da pessoa que faz uso destas substâncias e promove a funcionalidade da equipe multidisciplinar.
Endothelial UCP2 Is a Mechanosensitive Suppressor of Atherosclerosis
Authors: Luo Jiang-Yun , Cheng Chak Kwong , He Lei , Pu Yujie , Zhang Yang , Lin Xiao , Xu Aimin , Lau Chi Wai , Tian Xiao Yu , Ma Ronald Ching Wan , Jo Hanjoong , Huang Yu
Published: July 2022

Background:

Inflamed endothelial cells (ECs) trigger atherogenesis, especially at arterial regions experiencing disturbed blood flow. UCP2 (Uncoupling protein 2), a key mitochondrial antioxidant protein, improves endothelium-dependent relaxation in obese mice. However, whether UCP2 can be regulated by shear flow is unknown, and the role of endothelial UCP2 in regulating inflammation and atherosclerosis remains unclear. This study aims to investigate the mechanoregulation of UCP2 expression in ECs and the effect of UCP2 on endothelial inflammation and atherogenesis.

Methods:

In vitro shear stress simulation system was used to investigate the regulation of UCP2 expression by shear flow. EC-specific Ucp2 knockout mice were used to investigate the role of UCP2 in flow-associated atherosclerosis.

Results:

Shear stress experiments showed that KLF2 (Krüppel-like factor 2) mediates fluid shear stress-dependent regulation of UCP2 expression in human aortic and human umbilical vein ECs. Unidirectional shear stress, statins, and resveratrol upregulate whereas oscillatory shear stress and proinflammatory stimuli inhibit UCP2 expression through altered KLF2 expression. KLF2 directly binds to UCP2 promoter to upregulate its transcription in human umbilical vein ECs. UCP2 knockdown induced expression of genes involved in proinflammatory and profibrotic signaling, resulting in a proatherogenic endothelial phenotype. EC-specific
Ucp2
deletion promotes atherogenesis and collagen production. Additionally, we found endothelial
Ucp2
deficiency aggravates whereas adeno-associated virus-mediated EC-
Ucp2
overexpression inhibits carotid atherosclerotic plaque formation in disturbed flow-enhanced atherosclerosis mouse model. RNA-sequencing analysis revealed FoxO1 (forkhead box protein O1) as the major proinflammatory transcriptional regulator activated by UCP2 knockdown, and FoxO1 inhibition reduced vascular inflammation and disturbed flow-enhanced atherosclerosis. We showed further that UCP2 level is critical for phosphorylation of AMPK (AMP-activated protein kinase), which is required for UCP2-induced inhibition of FoxO1.

Conclusions:

Altogether, our studies uncover that UCP2 is novel mechanosensitive gene under the control of fluid shear stress and KLF2 in ECs. UCP2 expression is critical for endothelial proinflammatory response and atherogenesis. Therapeutic strategies enhancing UCP2 level may have therapeutic potential against atherosclerosis.
Neural Networks Track the Logical Complexity of Boolean Concepts
Authors: Carcassi Fausto , Szymanik Jakub
Published: July 2022

The language of thought hypothesis and connectionism provide two main accounts of category acquisition in the cognitive sciences. However, it is unclear to what extent their predictions agree. In this article, we tackle this problem by comparing the two accounts with respect to a common set of predictions about the effort required to acquire categories. We find that the two accounts produce similar predictions in the domain of Boolean categorization, however, with substantial variation depending on the operators in the language of thought.
Heavy-tailed distribution of the number of papers within scientific journals
Authors: Delabays Robin , Tyloo Melvyn
Published: July 2022

Scholarly publications represent at least two benefits for the study of the scientific community as a social group. First, they attest to some form of relation between scientists (collaborations, mentoring, heritage, …), useful to determine and analyze social subgroups. Second, most of them are recorded in large databases, easily accessible and including a lot of pertinent information, easing the quantitative and qualitative study of the scientific community. Understanding the underlying dynamics driving the creation of knowledge in general, and of scientific publication in particular, can contribute to maintaining a high level of research, by identifying good and bad practices in science. In this article, we aim to advance this understanding by a statistical analysis of publication within peer-reviewed journals. Namely, we show that the distribution of the number of papers published by an author in a given journal is heavy-tailed, but has a lighter tail than a power law. Interestingly, we demonstrate (both analytically and numerically) that such distributions match the result of a modified preferential attachment process, where, on top of a Barabási-Albert process, we take the finite career span of scientists into account.
Legal Protection against Retaliatory Firing Improves Workplace Safety
Authors: Johnson Matthew S. , Schwab Daniel , Koval Patrick
Published: July 2022

Workplace safety policies are designed to ensure that employers internalize the costs of injuries, but employers can undermine these policies with threats of dismissal. We show that states’ adoption of the public policy exception to at-will employment—an exception forbidding employers from firing workers for filing workers’ compensation claims or for whistleblowing—led to a substantial reduction in injuries. The widespread adoption of the public policy exception explains 14% of the decline in fatal injury rates between 1979 and 1994. Statutory protections from retaliatory firing also improved safety, but only when employers faced sufficiently strong penalties for violating them.
The Impacts of the U.S. Trade War on Chinese Exporters
Authors: Jiao Yang , Liu Zhikuo , Tian Zhiwei , Wang Xiaxin
Published: July 2022

This paper studies the impacts of the 2018 U.S. tariff surges on export prices and adjustments of sales across different markets of Chinese exporters. The finding that U.S. tariffs did not affect the free-on-board price of Chinese exports is robust to controlling for firm-related fixed effects. While firms’ exports to the United States dropped significantly, exports to the EU increased moderately and domestic sales or exports to other foreign markets were barely affected. Finally, by surveying managers of exporting firms, we shed light on potential impediments to firms’ adjustments of export prices and sales.
Identifying Rule-Based Rationality
Authors: Halevy Yoram , Mayraz Guy
Published: July 2022

The revealed preference methodology allows an observer to infer preferences from choices. This paper extends this fundamental idea by experimentally identifying the preference for basing choices on simple decision rules. Subjects not only make case-by-case portfolio allocations but also design a simple investment rule for selecting portfolios. They then choose between these two decision modes for an additional set of problems. The majority opt for the rule interface and in most cases choose a simple investment rule that cannot be rationalized by any simple utility function or accounted for by reductions in decision time or by cognitive costs.
The Oppressor’s Dilemma
Authors: LeFebvre Jesse R.
Published: July 2022

For the last thirty-five years, the majority of Japanese wedding ceremonies have involved Christianity, but scholars have struggled with Christianity’s increasingly prominent place within the Japanese religious landscape. The tendency has been to refute the religiosity of Christian weddings and embrace the rhetoric of Japanese essentialism. However, following its prohibition in 1612, the ongoing “eradication” of Christianity defined the very nature of Japanese subjecthood, made Christianity indispensable to the Japanese state, and entrenched ritualized acts of disassociation from the religion within the lives of every individual. Modern arguments, too, continue to assert Christianity’s foreignness, portraying it as the religion of colonialism or contending that “foreign” conceptions of religion are inappropriate within the Japanese context. However, the popularity of Christian wedding ceremonies within the context of postwar Japan owes much to prewar and wartime Japanese state policy where the Japanese government adopted policies toward religion that helped set the stage for the later acceptance of the Christian marriage rite.
Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Ephialtes genus-group
Authors: KHALAIM ANDREY I. , RUÍZ-CANCINO ENRIQUE
Published: July 2022

Mexican species of nine genera of the Ephialtes genus-group (Ichneumonidae: Pimplinae) have been reviewed: Acropimpla Townes (1 species), Anastelgis Townes (3 species), Calliephialtes Ashmead (6 species, including one unidentified taxon), Dolichomitus Smith (4 species), Endromopoda Hellén (1 species), Ephialtes Grav. (1 species), Iseropus Förster (1 species), Liotryphon Ashmead (4 species) and Scambus Hartig (16 species, including six morphospecies). Seven species are described as new to science: Acropimpla tequila Khalaim & Ruíz-Cancino, sp. nov., Anastelgis chiapasana Khalaim & Ruíz-Cancino, sp. nov., Endromopoda daschi Khalaim, sp. nov., Liotryphon gauldi Khalaim, sp. nov., L. tamajalus Khalaim & Ruíz-Cancino, sp. nov., Scambus irapuatoensis Khalaim & Ruíz-Cancino, sp. nov. and S. longicoxa Khalaim, sp. nov. Scambus basseyi Gauld, 1991 is found to be a junior synonym of S. crassicauda (Cresson, 1874) (syn. nov.). Two genera, Acropimpla and Endromopoda, and species Anastelgis garciai Gauld, Calliephialtes notanda (Cresson), Scambus aplopappi (Ashmead) and S. emeritae Gauld are recorded for the first time from Mexico; Anastelgis garciai Gauld is also newly recorded from Panama, Dolichomitus irritator (F.) from Honduras, Scambus albipes (Cresson) from Guatemala and S. arizonensis Walley from Guatemala and Honduras. Identification keys to the species occurring in Mexico are provided.
New species, notes on the biology of Scaptolenus LeConte (Coleoptera: Elateridae), and a key to the “vagans-group”
Authors: MARTÍNEZ-LUQUE ERICK OMAR , JONES ROBERT WALLACE , NIÑO-MALDONADO SANTIAGO
Published: July 2022

Two new species of the genus Scaptolenus LeConte (Coleoptera: Elateridae: Elaterinae: Cebrionini) from Mexico are described and illustrated: Scaptolenus pacofierroi sp. nov., found in the municipality of Aldama, in the state of Tamaulipas and Scaptolenus zuritai sp. nov., collected from the Chamela-UNAM Biological Station, in the state of Jalisco. Their segregation is based on the morphological configuration of their antennae, aedeagus, protibiae and metacoxal lamina. These new species fit well within the vagans-group and a key is presented to distinguish these new species within the vagans group. Additionally, distribution data of these new species are provided and biological data of the genus Scaptolenus are presented and analyzed.
A Dual-Attention Mechanism Deep Learning Network for Mesoscale Eddy Detection by Mining Spatiotemporal Characteristics
Authors: Li Baixin , Tang Huan , Ma Dongfang , Lin Jianmin
Published: July 2022

Mesoscale eddies are a mechanism for ocean energy transfer, and identifying them on a global scale provides a means of exploring ocean mass and energy exchange between ocean basins. There are many widely used model-driven methods for detecting mesoscale eddies; however, these methods are not fully robust or generalizable. This study applies a data-driven method and proposes a mesoscale detection network based on the extraction of eddy-related spatiotemporal information from multisource remote sensing data. Focusing on the northwest Pacific, the study first analyzes mesoscale eddy characteristics using a combination of gridded data for the absolute dynamic topography (ADT), sea surface temperature (SST), and absolute geostrophic velocity (UVG). Then, a deep learning network with a dual-attention mechanism and a convolutional long short-term memory module is proposed, which can deeply exploit spatiotemporal feature relevance while encoding and decoding information in the gridded data. Based on the analysis of mesoscale eddy characteristics, ADT and UVG gridded data are selected to be the inputs for the detection network. The experiments show that the accuracy of the proposed network reaches 93.38%, and the weighted mean dice coefficient reaches 0.8918, which is a better score than those achieved by some of the detection networks proposed in previous studies, including U-Net, SymmetricNet, and ResU-Net. Moreover, compared with the model-driven approach used to generate the ground-truth dataset, the network method proposed here demonstrates better performance in detecting mesoscale eddies at smaller scales, partially addressing the problem of ghost eddies.
Poster 167: Biomechanics of a Novel Dermal Augmentation Procedure for Subcritical Bone Loss
Authors: Wynkoop Aaron , Wang Patrick , Konicek John , Akhavan Sam
Published: July 2022

Objectives:

Subcritical glenoid bone loss has been associated with high failure rates when treated with standard labral repair. While a Latarjet can provide stability, high complication rates and the risk of long term arthritis makes this procedure less then ideal when bone loss is under 20%. The purpose of the current study was to demonstrate biomechanical results of a new arthroscopic procedure using dermal allograft augmentation of subcritical bone loss when compared to a standard labral repair for subcritical bone loss.

Methods:

Six cadaveric specimens were prepared sequentially to simulate four clinical scenarios (Figure 1): 1) an intact shoulder; 2) a 15% bony glenoid defect; 3) 15% defect repaired using a 3-anchor labral; and 4) Dermal Allograft augmentation of the bony defect. The glenoid was potted on a ball-bearing base allowing horizontal degrees of freedom, with 50N weights applied to simulate intra-articular compression. The humerus was potted and placed in an Instron at 45 degrees of abduction, allowing anterior translation to dislocation. Translation (mm) and force (N) to dislocation were measured, using ANOVA for statistical analysis.

Results:

Dermal augmentation of the 15% defect resulted in a significantly higher force to dislocation (20.53+/-7.76N) when compared to the defect group (14.75+/-4.99N, p=0.002) or the labral repair (13.94+/-4.13N, p=0.007). There was no difference between the force to dislocation between the defect and labral repair groups (p=1.0). The intact shoulder translated 8.37+/-1.06mm prior to dislocation. This was significantly higher than both the defect (5.23 +/- 0.65mm, p<0.001) or the labral repair (6.55+/-0.97mm, p=0.048). The dermal augmentation resulted in no significant difference in anterior translation to dislocation (8.92 +/- 4.13mm, p=1.0).

Conclusions:

While labral repair is often used in patients with subcritical bone loss, clinical failure rates are high, ranging from 25-100%. Results of the current study indicate that a standard labral repair does not restore the force to dislocation when used in a 15% defect. On the contrary, it may lead to tightening of the shoulder in a non-anatomic position, resulting in the repair being “tested” at earlier range of motions. This may cause the repair to stretch during every day range of motion. Dermal augmentation of the glenoid defect can restore the normal anterior translation of the shoulder, while also increasing the force to dislocation when compared to a standard repair.
Poster 184: Effect of Younger Starting Pitching Age on Humeral Retrotorsion in Baseball Pitchers With an Ulnar Collateral Ligament Injury
Authors: Hannon Joseph , Conway John , Creed Kalyssa , Garrison Craig , Kennedy Sean
Published: July 2022

Objectives:

Increased humeral retrotorsion (HRT) has been found to be a risk factor for ulnar collateral ligament (UCL) tears in baseball players. Recent work has demonstrated the age of 11 years as a potential watershed age for HRT development. In a group of baseball pitchers with UCL injuries, athletes who started pitching before the age of 10 years will demonstrate significantly more dominant limb humeral retrotorsion (DHRT) when compared with a group of baseball pitchers who reported starting pitching at 10 years or older.

Methods:

A total of 84 baseball pitchers with a diagnosed UCL injury were divided into 2 groups based upon the age at which participants began pitching: 33 players reporting a starting pitching age of 10 years or older (group 1) were compared with 51 baseball pitchers reporting a starting pitching age under 10 years (group 2). Participants’ DHRT and nondominant limb humeral retrotorsion (NDHRT) were measured using diagnostic ultrasound. Independent t tests were run to compare mean group differences of all patient data, starting pitching age, age at time of injury, DHRT, NDHRT, and humeral retrotorsion difference (HRTdiff).

Results:

There were no significant differences between groups with regard to age at time of injury, height, weight, or playing years’ experience. There was a statistically significant difference in the participant-reported starting pitching age. Significant differences between groups were noted for DHRT (group 1: 20.0°± 9.4°, group 2: 14.5°± 10.3°, P = .015) and for NDHRT (group 1: 38.6°± 8.8°, group 2: 32.9°± 9.5°, P = .007). No significant differences between groups were found for HRTdiff (P = .940).

Conclusions:

Baseball pitchers with a UCL injury who reported a starting pitching age younger than 10 years demonstrated significantly greater DHRT and NDHRT when compared with UCL-injured baseball pitchers who reported a starting pitching age at 10 years or later. The results of this study demonstrate that a younger starting pitching age results in increased HRT in players with UCL injuries. [Figure: see text]
Poster 194: Recall Bias in the Retrospective Collection of Common Pre-Operative Patient-Reported Outcome Measures in Hip Arthroscopy
Authors: Crutchfield Connor , Givens Ritt , O’Connor Michaela , Lynch T. Sean
Published: July 2022

Objectives:

To assess for the presence of recall bias between prospectively and retrospectively collected patient-reported outcome (PRO) scores in hip arthroscopy (HA).

Methods:

Patients that underwent HA between 2015-2021 and provided pre-operative baseline responses for the International Hip Outcome Tool-12 (iHOT-12), the Hip Disability and Osteoarthritis Outcome Score Physical Shortform (HOOS-PS), and the modified Harris Hip Score (mHHS) were eligible for recruitment. Eligible participants were asked to complete a study-specific survey and the same preoperative PROs retrospectively, requiring them to recall the status of the hip prior to surgery. Agreement between the prospective and retrospective scores was assessed using a two-way mixed effects intraclass coefficient (ICC) model. Paired t-tests were used to compare the mean scores of both groups and linear regression models were used to help identify associations between score discrepancies and patient characteristics.

Results:

A total of 222 patients were approached for participation, of whom 104 (60.6% female) completed study requirements and were included for analysis. The mean duration of symptoms before surgery was 24.5 ± 31.8 months and the mean duration to recall (from the day of surgery) for the retrospective completion of hip surveys was 29.1 ± 21.8 months. The iHOT-12 had a low amount of agreement between prospective and retrospectively collected scores (ICC=.452; P =.000). HOOS-PS scores also had a low amount of agreement (ICC=.458; P =.000). The mHHS had a moderate amount of agreement (ICC=.621; P =.000). Mean scores for iHOT-12 (41.5 ± 22.6 vs. 35.3 ± 17.7; P <.01), HOOS-PS (29.5 ± 18.9 vs 40.7 ± 17.9; P <.001), and mHHS (62.9 ± 16.5 vs 55.1 ± 15.3; P <.001) were all significantly different prospectively vs. retrospectively. The average changes in score observed for the iHOT-12, HOOS-PS, and mHHS were -6.2, 11.2, and -7.8, respectively. Multiple linear regression identified duration to recall and sex as significant predictors of the absolute difference between prospective and retrospectively collected iHOT-12 data while sex alone was predictive of a difference in HOOS-PS data.

Conclusions:

The retrospective collection of patient-reported outcomes for hip arthroscopy procedures, which requires patient recall of their preoperative condition, is subject to bias and inaccuracy. Recalled PROs consistently reflected worse pain/function than their prospectively recorded counterpoints; therefore, retrospective patient recall is an unreliable source of clinical data and the prospective collection of iHOT-12, mHHS, and HOOS-PS data should be prioritized. [Figure: see text][Figure: see text][Table: see text]
Poster 262: Correlation of Tanner Stage and Hypermobility with Meniscal and Articular Cartilage Injury in the Pluto Cohort
Authors: Gibian Joseph , Hutchinson Lauren , Miller Patricia , Kocher Mininder , Matava Matthew
Published: July 2022

Objectives:

To determine whether the relationship between hypermobility and meniscal and/or articular cartilage injury varies by stage of pubertal development. Patients with hypermobility will have a lower risk of meniscal and articular cartilage injury than patients with normal laxity.

Methods:

At 10 geographically diverse institutions in the United States, consecutive skeletally immature patients diagnosed with complete ACL tears between January 2016 and April 2020 were enrolled. Beighton score was collected at the preoperative physical exam; bone age was determined from a hand/wrist radiograph; and the presence of meniscal tears and articular cartilage injuries was collected from the surgical assessment. Tanner stage was documented at time of surgery. Univariable and multivariable logistic regression analysis was used to assess the effect of Tanner stage and Beighton score on the likelihood of cartilage injury and meniscal tear.

Results:

Seven hundred forty-seven skeletally immature patients with complete ACL tears were analyzed with an average age at surgery of 12.3 years; the cohort was 62% male. Eighty-five patients had documented cartilage injuries for an event rate of 11.4%. Bivariate analysis found that those with cartilage injuries had a slightly higher bone age (13.9 versus 13.1 years; p=0.001) and a higher Tanner stage (p=0.009). For each additional Tanner stage, the odds of cartilage injury increased by approximately 1.6 (p<0.001). No association was detected between hypermobility and the likelihood of a cartilage injury. Four hundred twenty-three patients had documented meniscal tears for an event rate of 56.6%. Bivariate analysis found that those with meniscal tears were slightly older (12.6 versus 12.0 years; p<0.001), had a slightly higher bone age (13.5 versus 12.8 years; p<0.001) and a higher Tanner stage (p=0.002). For each additional Tanner stage, the odds of a meniscal tear increased by approximately 1.3 times (p<0.001). No association was detected between hypermobility and the likelihood of a meniscal tear.

Conclusions:

There is a high rate of concomitant articular cartilage and meniscal injuries in skeletally immature patients who sustain ACL tears. The risk of concurrent injury is associated with increasing bone age and Tanner score. There was no association between these concurrent injuries and hypermobility. [Figure: see text][Figure: see text]
Intraocular lymphoma masquerading as unilateral hypopyon anterior uveitis: a case report
Authors: Zamani Ghodsieh , Hajipour Atefeh , Ganjeifar Babak , Ebrahimiadib Nazanin , Hosseini Seyedeh Maryam
Published: July 2022

Purpose

To report an unusual case of unilateral anterior segment large B-cell intraocular lymphoma (IOL) presenting as a recurrent hypopyon anterior uveitis.

Case presentation

A 55-year-old female was referred because of recurrent unilateral anterior hypopyon uveitis with partial response to topical corticosteroid. All of the laboratory tests, review of systems and ocular sampling results were unremarkable. Given a high concern for masquerades syndromes, cytological specimens were obtained 3 times and the last sample showed large B cell lymphoma. First, it appeared confined to the eye and initially responded favorably to local chemotherapy (methotrexate and rituximab) but later went on to develop systemic involvement. CNS lymphoma was detected on the third brain MRI 6 months following ocular involvement. At this time, systemic chemotherapy was started. In the last 18 months’ follow-up, visual acuity was 20/30 in the right eye without posterior segment or fellow eye involvement.

Conclusion

Unusual presentation of intraocular lymphoma as a unilateral isolated anterior hypopyon uveitis should be kept in mind. This report emphasizes the importance of precise work-ups and multiple ocular biopsies to confirm the diagnosis of intraocular lymphoma.