bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficient CO2 methanation using nickel nanoparticles supported mesoporous carbon nitride catalysts
Authors: Refaat Zakaria , Saied Mohamed El , Naga Ahmed O. Abo El , Shaban Seham A. , Hassan H B , Shehata Mohamed Refaat , Kady F. Y. El 
Published: March 2023

AbstractThe CO2 methanation technique not only gives a solution for mitigating CO2 emissions but can also be used to store and convey low-grade energy. The basic character and large surface area of mesoporous carbon nitride, (MCN), are considered promising properties for the methanation of CO2. So, a series (5–20 wt.%) of Ni-doped mesoporous carbon nitride catalysts were synthesized by using the impregnation method for CO2 methanation. the prepared catalysts were characterized by several physicochemical techniques including XRD, BET, FT-IR, Raman spectroscopy, TEM, TGA analysis, Atomic Absorption, H2-TPR, and CO2-TPD. The catalytic performance was investigated at ambient pressure and temperature range (200–500 °C) using online Gas chromatography system. The prepared catalysts showed good performance where 15%Ni/MCN exhibited the best catalytic conversion and methane yield with 100% methane selectivity at 450 °C for investigated reaction conditions.
Laguncularia racemosa leaves indicate the presence of potentially toxic elements in mangroves
Authors: Pimentel Victório Cristiane , Silva dos Santos Mayara , Cordeiro Dias Aimêe , Silvério Pena Bento João Pedro , dos Santos Ferreira Bruno Henrique , da Costa Souza Marcelo , Kato Simas Naomi , do Carmo de Oliveira Arruda Rosani 
Published: March 2023

AbstractBrazilian mangroves have been severely impacted by metallurgical, petrochemical, pyrometallurgical smelters and other industrial activities. In Rio de Janeiro, mangroves are part of the Atlantic Rainforest now under the stress of high levels of industrial waste. Therefore, this work aimed to detect potentially toxic elements (PTEs) by evaluating the leaves of Laguncularia racemosa (L.) Gaertn. f. collected from three mangroves with different levels of pollution. To gain further insight toward an accurate diagnosis of the effects of anthropogenic pollution on mangrove stands, we evaluated leaf epicuticular wax composition, as well as morphological and anatomical traits. Samples were analyzed using inductively coupled plasma-optical emission spectroscopy (ICP-OES), gas chromatography (GC) and microscopy. Results revealed variation in the contents of PTEs among the three mangroves from lowest to highest concentration, as follows: Al (0.30–0.73), Pb (0.095–0.325) and Zn (0.25–0.30) mg/kg. Zn was detected in sclerenchyma tissues. Leaf epicuticular wax contained more than 50% of triterpenes, in particular, the pentacyclic triterpenes lupeol (41.61–55.63%) and β-amyrin (8.81–16.35%). Such high concentrations promote the increase in leaf permeability to salts and PTEs. Micromorphology of leaf epicuticular wax in L. racemosa also varied among the three evaluated sites, especially around stomatal openings, but no harmful changes were noted. L. racemosa plays a key role in the rich diversity of mangrove ecosystems. As such, this species could, by the presence of PTEs in its leaves, be a suitable biomonitor of toxic substances in coastal environments of the world and used accordingly in strategies designed for eco-sustainable technologies.
How water desorbs from calcite
Authors: Dickbreder Tobias , Lautner Dirk , Köhler Antonia , Klausfering Lea , Bechstein Ralf , Kühnle Angelika 
Published: March 2023

The desorption of water from calcite (10.4) reveals that the (2 × 1) surface reconstruction not only persist at room temperature but crucially influences the surface properties.
Electrospray ion beam deposition plus low-energy electron holography as a tool for imaging individual biomolecules
Authors: Ochner Hannah , Rauschenbach Stephan , Malavolti Luigi 
Published: March 2023

AbstractInline low-energy electron holography (LEEH) in conjunction with sample preparation by electrospray ion beam deposition (ES-IBD) has recently emerged as a promising method for the sub-nanometre-scale single-molecule imaging of biomolecules. The single-molecule nature of the LEEH measurement allows for the mapping of the molecules’ conformational space and thus for the imaging of structurally variable biomolecules, thereby providing valuable complementary information to well-established biomolecular structure determination methods. Here, after briefly tracing the development of inline LEEH in bioimaging, we present the state-of-the-art of native ES-IBD + LEEH as a method of single-protein imaging, discuss its applications, specifically regarding the imaging of structurally flexible protein systems and the amplitude and phase information encoded in a low-energy electron hologram, and provide an outlook regarding the considerable possibilities for the future advancement of the approach.
A Qualitative Analysis of Clinician Perspectives of Ultrasound Biofeedback for Speech Sound Disorders
Authors: Dugan Sarah , Schwab Sarah M. , Seward Reneé , Avant James , Zhang Ting , Li Sarah R. , Eary Kathryn , Mast T. Douglas , Riley Michael A. , Boyce Suzanne 
Published: March 2023

Purpose:
Ultrasound biofeedback therapy (UBT) is a relatively new type of technology-assisted speech-language therapy and has shown promise in remediating speech sound disorders. However, there is a current lack of understanding of the barriers and benefits that may influence the usage behavior and clinical decision making for the implementation of UBT from a clinician perspective. In this qualitative study, we explore the perspectives of speech-language pathologists (SLPs) who have used ultrasound biofeedback in programs of speech sound therapy using the unified theory of acceptance and use of technology (UTAUT) model.

Method:
Seven SLPs who had clinical experience treating speech sound disorders with UBT participated. Semistructured in-depth interviews were conducted and video-recorded. Two coders coded and categorized the transcribed data, with consensus established with a third coder. Using thematic analysis, the data were exploratorily grouped into themes along components of the UTAUT model.

Results:
The highest number of codes was sorted into the “effort expectancy” theme, followed by “performance expectancy,” “social influence,” and “facilitating conditions” themes of the UTAUT model. Clinicians identified multiple perceived barriers and benefits to the use of ultrasound technology. The top identified barrier was limited accessibility, and the top benefit was the ability to visualize a client's articulatory response to cues on a display.

Conclusions:
Clinicians prioritized “effort expectancy” and “performance expectancy” when reflecting on the use of ultrasound biofeedback for speech sound disorders. Clinicians spoke favorably about using UBT for speech sound disorder treatment but acknowledged institutional barriers and limitations at organizational and social levels.
Effects of Production Training With Ultrasound Biofeedback on Production and Perception of Second-Language English Tense–Lax Vowel Contrasts
Authors: Chang Yung-hsiang Shawn 
Published: March 2023

Purpose:
This study investigated the efficacy of ultrasound biofeedback compared to a traditional acoustic input–only method in the second-language (L2) production training of English tense–lax vowel contrasts (/i–ɪ/ and /e–ɛ/). The relationship between the degrees of production and perception learning was also examined to explore a potential L2 production–perception link.

Method:
Using a pretest/training/posttest paradigm, two groups of native Mandarin speakers received three sessions of training, one with ultrasound and one with audio only. Perception performance was measured by accuracy in AX discrimination. Production performance was measured in terms of accuracy in repetition production and Euclidean distance between contrasting vowels.

Results:
Both groups showed significant improvements in posttest production and perception tasks. Additionally, the training benefits were retained 6 weeks after training. The two groups, however, did not differ significantly in training gains; nor was there a significant correlation between training-induced changes in perception and production performance.

Conclusions:
The results indicate that ultrasound feedback is similarly effective as the audio-only training in improving the L2 production of English tense–lax contrasts and the benefits transferred to perception. The lack of correlation between production and perception gains suggests that the two modalities need to be separately trained to achieve desired L2 learning outcomes.
Risk‐aware self‐triggered linear quadratic control
Authors: Kishida Masako 
Published: March 2023

AbstractThis paper presents a self‐triggered control approach with the view of risks for discrete‐time linear stochastic systems. More specifically, under the assumption that the first two moments of the disturbance distribution are known, the paper considers the problem of designing a control law that reduces the use of communication and power resources by aperiodically sampling the states and updating control inputs, while achieving a given performance goal at a risk below a specified level. This problem is approached by using the worst‐case Conditional Value‐at‐Risk as a measure of risk, to quantify the tail behavior of the stochastic systems, thus allowing us to suppress large losses. A numerical example is provided to illustrate the performance of the proposed approach.
An adaptive cross‐scale transformer based on graph signal processing for person re‐identification
Authors: Zhou Wei , Hou Yi , Xu Shijun , Zhou Shilin 
Published: March 2023

AbstractExtracting robust feature representation is one of the key challenges for person re‐identification (ReID) task. Although convolution neural network (CNN)‐based methods have achieved great success, they still cannot handle the part occlusion and misalignment caused by limited receptive field. Recently, pure transformer models have shown its power in the person ReID task. However, current transformer models adopt patches of equal‐scale as input, and cannot solve the problem of cross‐scale interaction properly. To overcome this problem, an adaptive cross‐scale transformer from a perspective of the graph signal, named ACSFormer, is proposed. Specifically, the self‐attention module is first treated as an undirected fully connected graph. And then, “node variation” is introduced as an indicator to adaptively merge neighbourhood tokens. To the best of the authors’ knowledge, their ACSFormer is the first work to attempt to combine pure transformers and graph signal processing in the field of person ReID. Extensive evaluations are conducted on three person ReID datasets to validate the performance of ACSFormer. Experiments demonstrate that this ACSFormer performs on par with state‐of‐the‐art CNN‐based methods and consistently improves transformer‐based baseline, for example, surpassing ViT‐baseline by 2.5%, 2.7% and 4.8% mAP on Market1501, DukeMTMC‐reID and MSMT17, respectively.
Improving the open cluster census
Authors: Hunt Emily L. , Reffert Sabine 
Published: March 2023

Context.Data from theGaiasatellite are revolutionising our understanding of the Milky Way. With every new data release, there is a need to update the census of open clusters.Aims.We aim to conduct a blind, all-sky search for open clusters using 729 million sources fromGaiaDR3 down to magnitudeG ∼ 20, creating a homogeneous catalogue of clusters including many new objects.Methods.We used the Hierarchical Density-Based Spatial Clustering of Applications with Noise (HDBSCAN) algorithm to recover clusters. We validated our clusters using a statistical density test and a Bayesian convolutional neural network for colour-magnitude diagram classification. We inferred basic astrometric parameters, ages, extinctions, and distances for the clusters in the catalogue.Results.We recovered 7167 clusters, 2387 of which are candidate new objects and 4782 of which crossmatch to objects in the literature, including 134 globular clusters. A more stringent cut of our catalogue contains 4105 highly reliable clusters, 739 of which are new. Owing to the scope of our methodology, we are able to tentatively suggest that many of the clusters we are unable to detect may not be real, including 1152 clusters from the Milky Way Star Cluster (MWSC) catalogue that should have been detectable inGaiadata. Our cluster membership lists include many new members and often include tidal tails. Our catalogue’s distribution traces the galactic warp, the spiral arm structure, and the dust distribution of the Milky Way. While much of the content of our catalogue contains bound open and globular clusters, as many as a few thousand of our clusters are more compatible with unbound moving groups, which we will classify in an upcoming work.Conclusions.We have conducted the largest search for open clusters to date, producing a single homogeneous star cluster catalogue which we make available with this paper.
Convergence analysis of a Local Discontinuous Galerkin approximation for nonlinear systems with balanced Orlicz-structure
Authors: Kaltenbach Alex , Růžička Michael 
Published: March 2023

In this paper, we investigate a Local Discontinuous Galerkin (LDG) approximation for systems with balanced Orlicz-structure. We propose a new numerical flux, which yields optimal convergence rates for linear ansatz functions. In particular, our approach yields a unified treatment for problems with (p, δ)-structure for arbitrary p ∈ (1, ∞) and δ ≥ 0.
Polynomial algorithms for p-dispersion problems in a planar Pareto Front
Authors: Dupin Nicolas 
Published: March 2023

In this paper, p-dispersion problems are studied to select p ⩾ 2 representative points from a large 2D Pareto Front (PF), solution of bi-objective optimization. Four standard p-dispersion variants are considered. A novel variant, Max-Sum-Neighbor p-dispersion, is introduced for the specific case of a 2D PF. Firstly, 2-dispersion and 3-dispersion problems are proven solvable in O(n) time in a 2D PF. Secondly, dynamic programming algorithms are designed for three p-dispersion variants, proving polynomial complexities in a 2D PF. Max-min p-dispersion is solvable in O(pn log n) time and O(n) memory space. Max-Sum-Neighbor p-dispersion is proven solvable in O(pn2) time and O(n) space. Max-Sum-min p-dispersion is solvable in O(pn3) time and O(pn2) space. These complexity results hold also in 1D, proving for the first time that Max-Sum-min p-dispersion is polynomial in 1D. Furthermore, properties of these algorithms are discussed for an efficient implementation and for practical applications.
Percutaneous endoscopic necrosectomy (PEN) for treatment of necrotizing pancreatitis: a systematic review and meta-analysis
Authors: Gjeorgjievski Mihajlo , Bhurwal Abishek , Chouthai Abhishek A. , Abdelqader Abdelhai , Gaidhane Monica , Shahid Haroon , Tyberg Amy , Sarkar Avik , Kahaleh Michel 
Published: March 2023

Abstract
Background and study aims Endoscopic necrosectomy is limited by the proximity of necrosis to the gastrointestinal tract. Percutaneous endoscopic necrosectomy (PEN) is a minimally invasive endoscopic method of percutaneous debridement. Studies regarding its efficacy and safety are lacking. The purpose of this study was to assess the efficacy and safety of PEN in necrotizing pancreatitis.
Methods Pubmed, Ovid, Cochrane, Scopus and Web of Science Database were searched from inception through February 2021. Dual extraction and quality assessment of studies using Cochrane risk of bias tool were performed independently by two authors. The primary outcome was defined as clinical success of PEN. Secondary outcomes included periprocedural morbidity, mortality, and long-term morbidity and mortality.
Results Sixteen observational studies including 282 subjects were analyzed. The average reported age of the participants was 50.3 years. Patients with reported gender included 39 % females and 61 % males. The success rate as defined by complete resolution of necrosis and removal of drainage catheters/stents was 82 % (95 % confidence interval 77–87). The mean size of pancreatic necrosis was 14.86 cm (5–54 cm). The periprocedural morbidity rate was 10 %, while there was no reported periprocedural mortality. The long-term morbidity rate was reported as 23 % and mortality at follow-up was 16 %.
Conclusions PEN is a novel method of endoscopic management of pancreatic necrosis. Based on our meta-analysis of retrospective studies, it represents a safe treatment modality with high rates of clinical success and low rates of perioperative morbidity and mortality. This study supports the use of PEN when conventional endoscopic therapy is not feasible.
Die Rolle des Biofaktors Zink bei
Autoimmunerkrankungen
Authors: Classen Hans-Georg , Birkelbach Daniela , Reich Anna 
Published: March 2023

ZusammenfassungZink ist essenziell für die Funktion des Immunsystems. Die Diagnostik des
aktuellen Zinkstatus ist dadurch erschwert, dass das Plasmazink nur etwa
0,1% des Gesamtbestandes ausmacht. Eine Metaanalyse von 62
englischsprachigen Arbeiten ergab signifikant erniedrigte Konzentrationen des
Plasma-/Serum-Zink bei verschiedenen Autoimmunerkrankungen. Zink sollte
daher in der Praxis mehr beachtet, Mangelzustände diagnostiziert und
– wenn nötig – durch eine gezielte Supplementierung mit
dem Biofaktor Zink ausgeglichen werden.
ω-3-Fettsäuren und Autoimmunerkrankungen: Kann man
mit Fischen der Entzündung davonschwimmen?
Authors: Schmiedel Volker 
Published: March 2023

ZusammenfassungAutoimmunerkrankungen haben sich in den letzten Jahrzehnten weltweit zu einer
Pandemie entwickelt – mit steigender Tendenz. Es existiert eine
genetische Prädisposition, aber Umweltfaktoren dominieren. Dabei
scheinen die Ernährung und hier bes. ω-3-Fettsäuren eine
sehr wichtige Rolle zu spielen.
Lesões articulares prévias são associadas ao desempenho muscular de jogadores de voleibol?
Authors: Bittencourt Natália F. N. , Amaral Giovanna M. , Zuin Alysson L. , Mascarenhas Rodrigo de O. , Silva Anderson A. , Silva Hytalo de J. , Mendonça Luciana D. 
Published: March 2023

Resumo
Objetivo O objetivo deste estudo é determinar se lesões prévias de ombro e joelho estavam associadas ao índice de fadiga isocinética e razão agonista/antagonista dos rotadores internos/externos do ombro e flexores/extensores do joelho em jogadores de voleibol.
Métodos Esta é uma investigação transversal com 49 jogadores de voleibol de elite que competem em alto nível no Brasil. O índice de fadiga isocinética e os perfis de agonistas/antagonistas foram avaliados durante a pré-temporada. Além disso, para registro de lesões anteriores, os atletas responderam a um questionário padronizado. Conduzimos uma análise da curva de característica de operação do receptor (receiver operating characteristic, ROC) para determinar a força de associação e o ponto de corte clinicamente relevante de variáveis com significância estatística na área sob a curva (AUC) (α = 0,05). Um teste t independente comparou as variáveis isocinéticas entre atletas com e sem lesão prévia (α = 0,05).
Resultados Os resultados da análise da curva ROC indicam que os valores do índice de fadiga dos isquiotibiais a 300o/s foram associados à presença de lesão prévia no joelho (área soba a curva [AUC] = 73%, p = 0,004), enquanto os valores do índice de fadiga dos rotadores externos do ombro a 360°/s não foram associados à presença de lesão prévia no ombro (AUC = 68%, p = 0.053).
Conclusões Atletas de voleibol de elite que relataram lesões anteriores no joelho estavam propensos a um índice de fadiga maior do que aqueles que não relataram lesões. O treinamento de resistência de flexores do joelho pode ser útil para atletas com relatos de lesões no joelho na temporada anterior.
Comparação entre tratamento cirúrgico e conservador para fraturas toracolombares AOSpine tipo A3 e A4 sem déficit neurológico: Estudo de coorte prospectivo observacional
Authors: Vialle Emiliano Neves , Falavigna Asdrubal , Arruda André de Oliveira , Guasque Joana Bretas Cabral Rondon , Pinto Bárbara Miroski de Oliveira , Finger Guilherme , Sfreddo Ericson , Cecchini André Martins de Lima 
Published: March 2023

Resumo
Objetivo Comparar os resultados clínicos entre os tratamentos conservador (CS) e cirúrgico (CXS) das fraturas A3 e A4 sem déficit neurológico.
Métodos Estudo prospectivo observacional de paciente com fraturas toracolombares tipo A3 e A4. Esses pacientes foram separados entre os grupos cirúrgico e conservador e avaliados sequencialmente através da escala numérica de dor (NRS), do questionário de incapacidade de Roland-Morris (RMDQ), do EuroQol-5D (EQ-5D) e da escala de trabalho de Denis (DWS) até 2,5 anos de acompanhamento.
Resultados Ambos os grupos apresentaram melhora significante, sem diferença estatística nos questionários de dor (NRS: CXS 2,4 ± 2,6; CS 3,5 ± 2,6; p > 0,05), funcionalidade (RMDQ: CS 7 ± 6,4; CXS 5,5 ± 5,2; p > 0,05), qualidade de vida (EQ-5D) e retorno ao trabalho (DWS).
Conclusão Ambos os tratamentos são opções viáveis e com resultados clínicos equivalentes. Há uma tendência a melhores resultados no tratamento cirúrgico das fraturas A4.
Metástase do eixo axial
Authors: Moura Marcio Fernando Aparecido de , Nakagawa Suely Akiko , Sanches Diego Pereira , Vianna Karina Costa Maia 
Published: March 2023

ResumoAs metástases no eixo axial permanecem um desafio para o tratamento cirúrgico bem como para outras modalidades, como quimioterapia, imunoterapia e radioterapia. É inequívoco que a cirurgia proporciona melhorias na dor e na preservação do status neurológico; porém, há permanência desta condição quando associada à radioterapia e a outras modalidades de tratamento. Nesta revisão damos ênfase às formas de tratamento cirúrgico atuais nas diferentes regiões da coluna vertebral e pelve. A evidente possibilidade de tratamentos percutâneos está relacionada a casos iniciais ou tardios, bem como a casos em que há maiores riscos e instabilidade às cirurgias convencionais associadas à radioterapia, e tem se mostrado a opção adequada para o controle local da doença metastática.
Pneumocystis jiroveci Pneumonia: A Review of Management in Human Immunodeficiency Virus (HIV) and Non-HIV Immunocompromised Patients
Authors: Ibrahim Atif , Chattaraj Asmi , Iqbal Qamar , Anjum Ali , Rehman Mohammad Ebad Ur , Aijaz Zobia , Nasir Fazila , Ansar Sadia , Zangeneh Tirdad T. , Iftikhar Ahmad 
Published: March 2023

Abstract
Pneumocystis jirovecii pneumonia is an opportunistic fungal infection that was mainly associated with pneumonia in patients with advanced human immunodeficiency virus (HIV) disease. There has been a decline in Pneumocystis jirovecii pneumonia incidence in HIV since the introduction of antiretroviral medications. However, its incidence is increasing in non-HIV immunocompromised patients including those with solid organ transplantation, hematopoietic stem cell transplantation, solid organ tumors, autoimmune deficiencies, and primary immunodeficiency disorders. We aim to review and summarize the etiology, epidemiology, clinical presentation, diagnosis, and management of Pneumocystis jirovecii pneumonia in HIV, and non-HIV patients. HIV patients usually have mild-to-severe symptoms, while non-HIV patients present with a rapidly progressing disease. Induced sputum or bronchoalveolar lavage fluid can be used to make a definitive diagnosis of Pneumocystis jirovecii pneumonia. Trimethoprim-sulfamethoxazole is considered to be the first-line drug for treatment and has proven to be highly effective for Pneumocystis jirovecii pneumonia prophylaxis in both HIV and non-HIV patients. Pentamidine, atovaquone, clindamycin, and primaquine are used as second-line agents. While several diagnostic tests, treatments, and prophylactic regimes are available at our disposal, there is need for more research to prevent and manage this disease more effectively.