bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimation of in-situ Masonry Mortar Compressive Strength Using Hammer Pendulum Test Method
Authors: Yang Suhang , Hu Chen , Xu Zhifeng 
Published: September 2024

Abstract

The compressive strength of in-situ masonry mortar was evaluated using the Pendulum Test Method (HPTM). A portable HPTM apparatus specifically designed for this purpose is utilized to indirectly evaluate the compressive strength of mortar by inserting steel nails into the horizontal mortar joints of the masonry and measuring the penetration depth. The discrete attributes of the test outcomes are analyzed to ascertain the repeatability and reliability of the HPTM results. A relationship between penetration depth and compressive strength is established. In comparison with other existing testing methods, it has been confirmed that HPTM is an alternative compression testing method for masonry mortar, with the advantages of high accuracy, minimal preparation work, and good repeatability. The mortar compressive strength estimated by HPTM is reasonably consistent with the mortar cubic compressive strength test results.
WITHDRAWN: Hydrogeochemical Characterization and Water Quality Assessment of Surface Water Resources in Obomkpa, Western Niger Delta, Nigeria
Authors: Ekeoma Chinemelu Sandra , Omoleomo Omoirabo 
Published: September 2024

Abstract

The hydrogeochemical analysis of surface water resources in Obomkpa and its surrounding areas aimed to characterize their physical, chemical, and microbial properties. This study provides crucial information on the quality and suitability of the water for various uses, focusing on acidity, mineral content, and suitability for irrigation and domestic purposes. Six water samples were collected from rivers in the study area and analyzed using standard methods. The parameters assessed included pH, total dissolved solids (TDS), total hardness, electrical conductivity (EC), dissolved oxygen (DO), biochemical oxygen demand (BOD), total suspended solids (TSS), turbidity, salinity, and concentrations of various ions, heavy metals, and microbial properties. The chemical analysis revealed that the water resources are generally acidic, with an average pH of 5.89. They are fresh (TDS mean of 28.62 mg/l) and soft (total hardness mean of 16.83 mg/l), but the acidity renders them unsuitable for industrial purposes. Other parameters such as EC (mean 46.82 µs/cm), DO (mean 4.98 mg/l), BOD (mean 1.21 mg/l), TSS (mean 5.17 mg/l), turbidity (mean 4.1 NTU), and salinity (mean 14.88 mg/l) were within acceptable ranges for various uses. Anion analysis (sulphate, nitrate, bicarbonate, chloride) and cation analysis (calcium, magnesium, sodium, potassium) showed varying concentrations, with sulphate (mean 5.11 mg/l), bicarbonate (mean 27.74 mg/l), and chloride (mean 8.27 mg/l) being notable. Heavy metal analysis revealed concentrations of iron, copper, and zinc (means of 0.016 mg/l, 0.011 mg/l, and 0.204 mg/l respectively), with zinc exceeding acceptable limits. Correlation analysis showed relationships among physiochemical parameters, with correlation coefficients ranging from − 0.24 to 0.99. Similar correlations among heavy metals, cations, and anions were observed (correlation coefficient (r²) range of -0.21 to 0.70 and 0.12 to 0.98 respectively). The study concludes that while surface water resources in Obomkpa are generally suitable for domestic and irrigation purposes, they require treatment to reduce acidity and control zinc levels. The water chemistry analysis identified the dominant water types as Ca-Mg-(Na)-Cl and Ca-Mg-(Na)-SO4, indicative of hard water with high calcium and magnesium content. This study contributes novel insights into the hydrogeochemical characteristics of Obomkpa's water resources, emphasizing the need for targeted remediation to enhance water quality for various applications.
Experimental and Numerical Studies on Mechanical Characteristics and Fracture Behaviours of Jointed Rock with Different Roughness
Authors: Hu Chengguo , Li Xiaozhao , Wu Yun , Meng Bo , Jia Bangguo 
Published: September 2024

Abstract

As a feature of rock mass, joints exist widely and seriously affect the stability of rock mass engineering. The natural joint surface is mostly rough structure, further leading to more complicated mechanical characteristics such as strength and deformation of rock. In this paper, samples containing rough joints were prepared using three-dimensional printing technology and rock-like material pouring method. Uniaxial compression tests were carried out on rock-like samples with different joint roughness coefficients by the electro-hydraulic servo-controlled rock mechanics testing system to study the effect of joint surface roughness on strength, deformation and failure mode of samples. On this basis, a discrete element model with a rough joint surface was established based on particle flow code in two dimensions. The crack propagation characteristic of joint surface on the deformation and failure process of jointed rocks was studied. The fracture mechanism of rough jointed samples was explained from the microscopic perspective. The results showed that the sample's peak strength, peak strain, elastic modulus and secant modulus increased with the increase of joint roughness coefficient under uniaxial compression, and peak strength and elastic modulus were more sensitive to joint roughness. With the increase of joint roughness coefficient, the failure mode of the sample developed from shear failure to tensile-shear mixed failure and splitting failure. In addition, the strain with tensile cracks and shear cracks increased, and the number of tensile cracks increased with the increase of joint roughness coefficients, while the shear cracks decreased. The research results are of great significance for revealing mechanical characteristics and fracture behaviours of jointed rock with different roughness.
A Coevolutionary Algorithm based on Constraints Decomposition for Constrained Multi-Objective Optimization Problems
Authors: Li Guangpeng , Li Li , Cai Guoyong 
Published: September 2024

Abstract

Constrained multiobjective optimization problems (CMOPs) are challenging for evolutionary algorithms (EAs). Due to the interaction of multiple constraints, the constrained Pareto fronts (CPFs) exhibit various complex characteristics, e.g., degeneracy, discontinuous or low feasible ratio. Most algorithms achieve poor convergence and diversity performance on these problems. Therefore, we proposed a coevolutionary framework based on constraints decomposition to solve the complex CMOPs. Specifically, this framework decomposes the CMOP into multiple help subproblems with single constraint, thereby decoupling the complex constraints. Then, the subpopulations optimize these subproblems to assist in solving the original problem. Furthermore, to avoid wasting computational resources, a two-stage strategy was used to fully utilize the auxiliary populations to search for feasible solutions. And an evolutionary state detection strategy based on historical information is proposed, which is used to determine whether the evolution moves to the next stage. The framework can take the advantage of the low complexity of single-constraint problems to help algorithm search the complete feasible regions. Experiments on benchmark problems show that the proposed algorithm is competitive with five other most representative constrained evolutionary algorithms in terms of convergence and diversity performance.
Evaluating Evapotranspiration Models for Simulation of Soil Water Dynamics in Data-Scarce Paddy Growing Areas of Eastern India
Authors: Adhikary Partha Pratim , Mohanty Sheelabhadra , Rautaray Sachin Kanta , Sarangi Arjamadutta 
Published: September 2024

Abstract

Effective soil water management is essential for successful agricultural growth and efficient water use. Evapotranspiration (ET) estimation plays a crucial role in hydrologic modelling that simulates soil water movement. While the FAO Penman-Monteith (PM) model is a popular choice for estimating reference crop ET (ETo), it depends heavily on various climatic variables often unavailable in data-scarce regions. This study examines eight different ETo models to simulate soil water dynamics in the low-lying paddy fields of eastern India in an effort to address the challenge of limited data availability. Using the HYDRUS-1D model and a non-weighing type paddy lysimeter, the actual ET was estimated. The results revealed that while all ETo models exhibited similar trends in simulating soil moisture content (SMC), their accuracy varied significantly. The models namely Blaney-Criddle, Hargreaves-Samani, Ivanov, Dalton, and Penman deviated considerably from the observed SMC values. However, for the FAO-PM, Irmak, and Priestly-Taylor models, no significant differences were detected between the simulated and observed values of SMC. The Irmak and Priestly-Taylor models can account for 94% of the variability in predicting SMC compared to the FAO-PM model. This study highlights that ETo models that require less data inputs, such as Priestly-Taylor and Irmak models, can also produce reliable and accurate results and can be used in water management related studies in eastern India. These models ensure efficient use of water in agriculture and offer practical solutions for regions where meteorological data is scarce.
Industrial water withdrawal prediction using multi-head attention encoder model
Authors: Yuan Rui , Su Kuizu , Man Yacan , Lu Liyu , Xu Hao , Liu Huaili , Ma Hao , Wang Wei , Zhou Xiao 
Published: September 2024

ABSTRACT

Industrial water withdrawal prediction is the cornerstone of water resources monitoring and early warning, as well as a key task in implementing rigid constraints on water resources. Although many factors may influence water withdrawal, they are difficult to obtain. Extracting the features in the historical water withdrawal data itself is a more convenient alternative way to achieve accurate prediction. However, due to the lack of significant regularity and periodicity in industrial water data, feature extraction is challenging. In this paper, a multi-head attention encoder (MAEN) model consisting of multi-head attention mechanisms and feed-forward neural networks is proposed to enable more convenient and accurate forecasting. The multi-head attention mechanism allows to focus on different parts of the data simultaneously, detecting complex dependencies, and extracting key features from historical data to enable more efficient feature extraction. Applied to water withdrawal data from real factories, the proposed model outperforms common time series prediction models including artificial neural network, long short-term memory, and gate recurrent unit. Compared to the best-performing comparison model, MAEN shows a reduction of mean squared error by 3.2% for 1 day ahead predictions, and 8.9% for 7 days ahead predictions, illustrating its superior performance in industrial water withdrawal prediction.
Characterization, formation mechanism, and human health risk assessment of fluoride in shallow groundwater of Suzhou city, East China
Authors: Liu Xianghong , Chen Kai 
Published: September 2024

ABSTRACT
Groundwater is a vital water source for human consumption and irrigation. Understanding its fluoride content and health implications is crucial for water resource management. This study investigated the quaternary aquifer in Suzhou, China, collecting and analyzing 49 groundwater samples. Thermodynamic simulation, multivariate statistical analysis, and health risk assessment models were employed to determine fluoride concentration characteristics, hydrochemical controlling mechanisms, and noncarcinogenic risks. Results revealed an average fluoride concentration of 0.89 mg/L, with 26.5% of samples exceeding the Grade III groundwater quality standard. High-fluoride groundwater (&gt;1 mg/L) exhibited spatial heterogeneity and was predominantly of the Na-Mg-HCO3 hydrochemical type. Multivariate analysis and thermodynamics simulations indicated that water–rock interactions (e.g., silicate mineral weathering and fluorite dissolution) governed groundwater hydrochemistry. Fluoride primarily originated from fluoride-bearing mineral dissolution, while negative cation exchange and precipitation of calcite and dolomite enhanced fluoride enrichment. pH had minimal impact on fluoride concentrations under weakly alkaline conditions. Health risk assessment suggested that fluoride in shallow groundwater posed a higher noncarcinogenic risk to children than adults via ingestion. These findings provide valuable insights for regional groundwater resource management.
acesso aos centros de atenção psicossocial II, na perspectiva da narrativa dos usuários.
Authors: Dos Santos Marcos André , Dos Santos Albuquerque Maria Cicera , Comassetto Isabel 
Published: September 2024

RESUMO

Introdução: Este estudo justifica-se pelo entendimento dos usuários sobre o acesso aos Centros de Atenção Psicossocial que prestam assistência à pessoa com transtorno mental com foco na sua porta de entrada e continuidade no serviço. A partir daí, almejou-se a possibilidade de conhecer como é a qualidade do acesso oferecido e possivelmente esclarecer essas funcionalidades à sociedade. Objetivo: Compreender o acesso aos Centros de Atenção Psicossocial (CAPS II), por meio das falas dos usuários. Metodologia: Estudo de abordagem qualitativa, exploratória, com o uso do método de análise de conteúdo de Laurence Bardin. A ser realizado em sessões individuais, com usuários e ex- usuários de dois CAPS II de diferentes distritos sanitários de Maceió. A coleta foi realizada através da entrevista em profundidade, com auxílio do roteiro semiestruturado e diário de campo por meio de gravação de voz. Resultados e discussão: Através das falas dos participantes foram identificadas três categorias principais: e subcategorias dentro das categorias. Como resultado obtido após o processo de categorização das narrativas foi a identificação de dificuldades e facilidades narradas pelos usuários do serviço. Como dificuldades, foram relatadas a distância da moradia do usuário para o serviço, a desinformação em relação ao PTS e a dificuldade em ter seu diagnóstico esclarecido. Como facilidades destacam-se o acolhimento da equipe, a oferta dos cuidados, e as relações interpessoais como forma de reinserção social. Considerações finais: É um estudo importante tanto para a sociedade, como para a gestão e para a equipe multiprofissional, porque que através das falas dos usuários possam se possibilitar melhorias estruturais no serviço e também ver a necessidade de aplicação de novas tecnologias para o cuidado na saúde mental.
Palavras-chaves: Pacientes, Serviços de Saúde Mental, Acesso aos Serviços de Saúde, Qualidade, Acesso e Avaliação da Assistência à Saúde.
Projetos de autonomia com adolescentes em desligamento institucional por maioridade
Authors: Tavares da Rocha Ana Carolina , Romeiro Esteves Mayra , Galoni Pereira Luana Luiza 
Published: September 2024

O Acolhimento Institucional é um serviço de caráter excepcional e temporário de alta complexidade oferecido pelo Sistema Único de Assistência Social (SUAS), que visa a proteção integral de crianças e adolescentes que tiveram seus direitos violados. Ainda assim, a maior parte dos acolhidos ultrapassa o tempo previsto de 18 meses para o acolhimento, alguns chegando a mais de 6 anos, podendo resultar em impactos significativos e permanentes no seu desenvolvimento. Dessa maneira, o presente trabalho buscou compreender o processo de desligamento institucional, tendo como objetivo investigar a construção de projetos de autonomia com adolescentes que estão em processo de desligamento institucional por maioridade em âmbito nacional. Para tal, foi realizada uma Revisão Integrativa da Literatura Nacional incluindo artigos científicos, teses e dissertações em língua portuguesa (do Brasil) publicados nos últimos 20 anos em bases de dados científicos como CAPES, SCIELO, GOOGLE ACADEMICO e SOCIAL CARE, utilizando descritores e combinações estabelecidos previamente. Após a aplicação dos critérios de exclusão e inclusão, de 1.026 encontrados, foram selecionados apenas 4 artigos para leitura completa e análise. Feita a categorização e discussão desses, os resultados encontrados versam sobre a importância dos planos de ação focados nos projetos de vida e de autonomia para a promoção de mudanças sociais significativas, realçando a importância de políticas públicas que considerem os sujeitos sociais para quais são pensadas essas políticas e da formação das redes psicossociais e comunitárias. Identificando uma certa carência em relação a estudos sobre a temática no âmbito nacional. Espera-se assim, que este trabalho possa vir a servir como fonte para futuras pesquisas que estejam interessadas em pensar ações e programas voltados para essa população.
QSAR Studies on a Class of Benzofuranene Cyanide Derivatives as Potential Inhibitors Targeting Staphylococcus aureus Sortase A
Authors: Yang Bo , Fu Shaodong , Qiu Yawei , Miao Jinfeng , Zhang Jinqiu 
Published: September 2024

Background:
Staphylococcus aureus is a widely distributed and highly pathogenic
zoonotic bacterium. Sortase A represents a crucial target for the research and development
of novel antibacterial drugs.

Objective:
This study aims to establish quantitative structure-activity relationship models
based on the chemical structures of a class of benzofuranene cyanide derivatives.
The models will be used to screen new antibacterial agents and predict the properties of
these molecules.

Method:
The compounds were randomly divided into a training set and a test set. A
large number of descriptors were calculated using the software, and then the appropriate
descriptors were selected to build the models through the heuristic method and the gene
expression programming algorithm.

Results:
In the heuristic method, the determination coefficient, determination coefficient
of cross-validation, F-test, and mean squared error values were 0.530, 0.395, 9.006, and
0.047, respectively. In the gene expression programming algorithm, the determination
coefficient and the mean squared error values in the training set were 0.937 and 0.008,
respectively, while in the test set, they were 0.849 and 0.035. The results showed that
the minimum bond order of a C atom and the relative number of benzene rings had a significant
positive contribution to the activity of compounds.

Conclusion:
In this study, two quantitative structure-activity relationship models were
successfully established to predict the inhibitory activity of a series of compounds targeting
Staphylococcus aureus Sortase A, providing insights for further development of novel
anti-Staphylococcus aureus drugs.
cRGD-platelet@MnO/MSN@PPARα/LXRα Nanoparticles Improve Atherosclerosis in Rats by Inhibiting Inflammation and Reducing Blood Lipid
Authors: Lv Zheng , Zhang Yupeng , Lu Mengke , Wang Ziyi , Nong Xiaoyue , Wen Guoliang , Zhang Wei 
Published: September 2024

Objective:
Atherosclerosis (AS) is an inflammatory disease of arterial intima driven
by lipids. Liver X receptor alpha (LXRα) and peroxisome proliferator-activated receptor alpha
(PPARα) agonists are limited in the treatment of AS due to their off-target effects and serious
side effects. Therefore, this study was designed to construct a novel nanoparticle (NP) and evaluate
its mechanism of action on inflammation inhibition and lipid reduction in AS.

Methods:
We synthesized cRGD-platelet@MnO/MSN@PPARα/LXRα NPs (cRGD-platelet-
NPs) and confirmed their size, safety, and targeting ability through various tests, including dynamic
light scattering and immunofluorescence. In vivo and in vitro experiments assessed cell
proliferation, apoptosis, inflammation, and plaque formation. Finally, the NF-κB signaling pathway
expression in rat aorta was determined using a western blot.

Results:
The synthesis of cRGD-platelet-NPs was successful; the particle size was approximately
150 nm, and the PDI was below 0.3. They could be successfully absorbed by cells, exhibiting
high safety in vivo and in vitro. The cRGD-platelet-NPs successfully reduced plaque formation,
improved lipid profiles by lowering LDL-cholesterol, total cholesterol, and triglycerides, and
raised HDL-cholesterol levels. Additionally, they decreased inflammatory markers in the serum
and aortic tissue, suggesting reduced inflammation. Immunohistochemistry and western blot
analyses indicated that these NPs could not only promote M2 macrophage polarization but also
suppress the NF-κB signaling pathway.

Conclusion:
The newly developed cRGD-platelet-NPs with high safety are a promising approach
to AS treatment, which can regulate ABCA1, reduce the formation of AS plaques, and
enhance cholesterol efflux. The mechanism may involve the suppression of the NF-κB signaling
pathway.
A Case of Non-calcified Intrahepatic Primary Osteosarcoma: A Case Report and a Literature Review
Authors: Yang Chongze , Qin Lan-hui , Chen Pei-yin , Chen Jia-qi , Liao Jin-yuan 
Published: September 2024

Introduction:
Intrahepatic primary osteosarcoma is a rare disease with a very low incidence but a very poor prognosis. A total of 12 cases have been previously
reported, and in most of these cases, intra-focal calcification was observed. This paper aims to report a case of non-calcified intrahepatic primary
osteosarcoma.

Case Description:
We hereby report a female patient with hepatitis B for 20 years, identified during a routine examination due to a mass in the right lobe of the liver.
The patient experienced no significant discomfort, and the serological tumor markers were not elevated. Surgical resection was performed after
comprehensive examinations, and postoperative pathology showed primary osteosarcoma of the liver. The patient experienced recurrence and
metastasis seven months postoperatively and died eight and a half months postoperatively.

Conclusion:
Intrahepatic primary osteosarcoma is an extremely rare disease, and it currently requires a combination of clinical, radiological, and pathological
findings to make a diagnosis of exclusion. Further, patients may benefit from early diagnosis, aggressive surgery, and post-operative
chemotherapy.
Targeted Drug Delivery for Precision Mitochondrial Therapy in Osteoporosis: Therapeutic Strategies and Advances
Authors: He Junyi , Zeng Wenxuan , Ye Xiaoyun , Niu Xiaoshuang , Liu Juan , Chen Zhihui 
Published: September 2024

:
Osteoporosis (OP) remains a significant global health challenge, marked by high prevalence
and considerable economic burden, yet effective therapeutic options remain limited. Central to
the pathogenesis of OP is mitochondrial dysfunction, which adversely impacts bone formation and
resorption. This review provides an in-depth analysis of the complex relationship between mitochondrial
function and OP, elucidating critical molecular mechanisms and identifying promising therapeutic
agents. Among these, zoledronic acid and resveratrol stand out, demonstrating significant efficacy
in enhancing mitochondrial functions and enhancing bone density in both preclinical models
and clinical trials. Moreover, innovative drug delivery systems, such as mitochondrial-targeted
nanodelivery systems and localized delivery methods, have been developed to ensure precise targeting
and reduce systemic side effects, thereby enhancing bioavailability and therapeutic outcomes. By
delving into these advancements, this review seeks to facilitate the translation of mitochondrial-targeted
therapies from preclinical research to clinical application, ultimately advancing OP management
and improving patient outcomes.