bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minimum Spanning Tree‐Based Clustering for Chemical Evaluation of Commercial Nail Polish Samples Using Spectroanalytical Data
Authors: Castello Heloisa Froehlick , Silva Felipe Lopes Rodrigues , Ferreira Dennis Silva , Levada Alexandre Luis Magalhães , Pereira‐Filho Edenir Rodrigues , Manhas Verbi Pereira Fabiola 
Published: June 2024

ABSTRACTThis study discusses potential toxic elements detection in conventional nail polish, including Cr and Pb. The noteworthy results highlight well‐established potential risks of elevated Cr and Pb concentrations. These elements are not allowed in the European Union. Implementing the minimum spanning tree (MST) approach and the isolation forest algorithm effectively clustered samples. Forty‐five samples were analyzed, and four clusters were identified. Two presented six samples with high concentrations of Fe (Cluster 1 with four samples) and Cr and Pb (Cluster 2 with two samples). The other 39 samples presented low concentrations of the determined elements (Co, Cr, Cu, Fe, Ni, and Pb). Cadmium, Zn, and Mn were not detected in any of the analyzed samples. Furthermore, integrating energy‐dispersive x‐ray fluorescence (ED‐XRF) and laser‐induced breakdown spectroscopy (LIBS) enabled fast direct analysis of nail polish samples, streamlining a swift and reliable data acquisition process. This research underscores the importance of ongoing vigilance and monitoring of potential health hazards associated with nail polish formulations, especially in regions with regulatory restrictions on certain elements.
Strategies for the Development of Asymmetric and Non‐Directed Petasis Reactions
Authors: Gonzalez Kevin J. , Cerione Chloe , Stoltz Brian M. 
Published: June 2024

AbstractThe Petasis reaction is a multicomponent reaction of aldehydes, amines and organoboron reagents and is a useful method for the construction of substituted amines. Despite the significant advancement of the Petasis reaction since its invention in 1993, strategies for asymmetric and non‐directed Petasis reactions remain limited. To date, there are very few catalytic asymmetric Petasis reactions and almost all asymmetric reports employ a chiral auxiliary. Likewise, the aldehyde component often requires a directing group, ultimately limiting the reaction's scope. In this Concept, key methods for asymmetric and non‐directed Petasis reactions are discussed, focusing on how these conceptual advances can be applied to solve long‐standing gaps in the Petasis literature.
Axonemal tubules in the distal sperm tail of Wolbachia‐infected Drosophila simulans males contain ring‐like intraluminal structures that persist after axoneme fragmentation
Authors: Pratelli Ambra , Riparbelli Maria Giovanna , Callaini Giuliano 
Published: June 2024

AbstractWolbachia are obligate intracellular alphaproteobacteria that enhance their spreading by altering the reproductive mechanisms of several invertebrates. Among the reproductive alterations, Wolbachia also causes cytoplasmic incompatibility that leads to embryo death when infected males are crossed with uninfected females, thus selecting infected females. However, the presence of Wolbachia has important fitness costs and infected Drosophila simulans males produce less sperm than their uninfected counterparts. Such sperm suffer, indeed, of some structural alterations that hinder their proper function. We took advantage of the fact that several sperm have abnormal distal regions of the tail, in which the plasma membrane is broken and the axonemal components splayed, making the ultrastructural aspects clearly observable. We found that axoneme reduction in the distal region of the sperm does not follow a unique pattern as observed in other insects, but occurs by losing accessory tubules or peripheral doublets. The axonemal tubules contain distinct coaxial ring‐like structures that are still observed after axoneme fragmentation and form large clusters of several units.
Hydrogen production from chemical hydrogen storage materials over copper‐based catalysts
Authors: Long Jian‐Jun , Wu Hao‐Chong , Liu Yuan‐Ting , Ding Yi‐Yue , Yao Qi‐Lu , Metin Onder , Lu Zhang‐Hui 
Published: June 2024

AbstractHydrogen, as a clean and efficient energy source, is one of the important energy carriers in the future. However, the safe storage and delivery of hydrogen is still a bottleneck in its practical applications. Chemical hydrides (such as NaBH4, NH3BH3, N2H4·H2O, N2H4BH3, and HCOOH) are considered as potential chemical hydrogen storage materials that can achieve rapid on‐site hydrogen production. At present, the most critical issue for them is to develop economic catalysts to achieve efficient hydrogen production from chemical hydrides. Copper (Cu) is considered as a promising catalyst that is one of the most reactive metals among the first‐row transition metals and economically cheap. In this review, we outline the recent advancements of Cu‐based catalysts in catalyzing hydrogen production from chemical hydrides. Moreover, the synthesis methods, characterization techniques, and hydrogen production catalytic activity of Cu‐based catalysts were also introduced. Finally, a brief conclusion and outlook are given for the application of Cu‐based catalysts in the dehydrogenation of chemical hydrides. We hope that this review will stimulate interest in the promising research area of Cu‐based catalysts for the dehydrogenation of chemical hydrides.
Copper‐based nanocatalysts toward chemoselective hydrogenation reaction
Authors: Guo Hui , Pei Ling‐Jun , Xie Shao‐Lei , Shen Meng‐Qi , Yang Yong , Liu Hu 
Published: June 2024

AbstractCu‐based catalysts are widely used in various heterogeneous catalytic reaction systems, the precise control of their electronic structure is an intrinsic requirement for the rational design of metal catalysts, and it is also an important basis for clarifying their structure‐activity relationships. Changing the electronic structure of Cu‐based catalysts is an important way to improve the catalytic hydrogenation performance of Cu‐based catalysts by controlling the adsorption intensity between the reaction adsorbate and the active center. In this paper, the application of selective hydrogenation of Cu‐based catalysts is reviewed, with a special emphasis on the selective catalytic hydrogenation reduction of p‐nitrostyrene and CO2. This review particularly emphasizes the application of Cu‐based catalysts in the field of selective hydrogenation and discusses the influence of their different properties on selective hydrogenation performance.
The protective effect of vitamin D on ovarian reserve and anti‐mullerian hormone in patients undergoing chemotherapy for breast cancer, a randomized phase ΙΙ clinical trial
Authors: Dastmardi Zahra , Lashkari Marzieh , Saeedian Arefeh , Aghili Mahdi , Alipour Sadaf 
Published: June 2024

AbstractBackgroundReduced ovarian reserve is among the crucial long‐term side effects of using chemotherapy agents in breast cancer, yielding early ovarian failure. On the other hand, vitamin D is an essential factor in protecting the follicles and an important predictive factor for successful IVF therapy.AimThe aim of this study is evaluation of vitamin D as a agent that can reduce fertility complications of chemotherapy specially in young women.MethodsBreast cancer patients undergoing chemotherapy at two cancer institutes were enrolled in this study. The case group received 1000 IU of calcitriol, and the AMH level was measured at the baseline, after chemotherapy, and six months after chemotherapy. The primary end point was improvement in the AMH level after six months of chemotherapy. the secondary endpoint was to evaluate the predictive factors of AMH level decline during chemotherapy.ResultsBetween 2018 and 2019, 18 and 15 patients were enrolled in the case and control groups, respectively. The mean AMH level (ngr/ml) of the patients in the case and control group were 3.16 and 2.37 ng/mL, respectively (p‐value = .16). These levels were 0.387 and 0.19 after six months (p‐value = .38). The AMH rise immediately after chemotherapy cycles to six months after chemotherapy, in the case and control groups were 0.86 and 0.44 ng/mL, respectively, which was slightly higher in the case group but not statistically significant between two groups (p‐value = .054).ConclusionDespite a minimal rise in the AMH level after six months of chemotherapy, the study could not demonstrate any protective effect of vitamin D on patients' ovarian reserve undergoing chemotherapy for breast cancer. Further larger studies are needed to evaluate the effect of vitamin D supplements on ovarian reserve beside optimal dose and duration.
Photoluminescence Quenching Upon Growth of Metal Nanoparticles: Quantum‐Mechanical Views
Authors: Gangopadhyay P. 
Published: June 2024

AbstractIn dictating the optical processes in metal nanoparticles, for instance, quantum nature of free electrons is significantly dominant and plays very crucial roles at the level of nanoscale dimensions of materials. As consequences of the quantum‐confinement effects on the conduction electrons, surface‐plasmon resonance induced optical absorption and light emission properties of metal nanoparticles are found to be strongly dependent on physical dimensions of the nanomaterials. In addition, surface‐confined acoustic vibration (phonon) modes have been experimentally observed to depend on the sizes of the metal nanoparticles. Also, interestingly, tuning of the surface‐plasmon resonance condition is found to enhance the intensity of the acoustic Raman modes in metal nanoparticles. The study highlights the role of plasmon‐phonon coupling in Co metal nanoparticles embedded in a silica‐glass. In the research field of nanosciences and nanotechnologies, extraordinary behaviour and properties of nanoscale matters are investigated. In this context, interesting studies have been discussed in this review article to elaborate optical, chemical and photoluminescence properties of nanoscale Ag metal particles. Subtle detection of optical phenomena associated with the excited many‐body electronic processes in the metal nanoparticles, for example, are very interesting but definitely challenging. Here we make an attempt to find out how the thermal growth of Ag metal nanoparticles in a glass matrix snuffs out the light emission from the samples? Quantum mechanical interpretations of the underlying processes about the quenching of photoluminescence phenomena with the growth of the metal nanoparticles will help to fine tune the optical properties of plasmonic systems as well as to harness potential applications of the nanomaterials.
Metal‐Organic Frameworks for Dual Photo‐Oxidation and Capture of Arsenic from Water
Authors: G‐Saiz Paula , Gonzalez Navarrete Bárbara , Dutta Subhajit , Vidal Martín Elvira , Reizabal Ander , Oyarzabal Itziar , Wuttke Stefan , Lanceros‐Méndez Senentxu , Rosales Maibelin , García Andreina , Fernández de Luis Roberto 
Published: June 2024

AbstractDespite rapid technological progress, heavy metal water pollution, and particularly arsenic contamination, remains a significant global challenge. In addition, the stabilization of trivalent arsenic as neutral arsenite (AsIII) species hinders its removal by conventional sorbents. While adsorption of anionic arsenate (AsV) species is in principle more feasible, there are only few adsorbents capable of adsorbing both forms of arsenic. In this work, we explore the potential of two well‐known families of Metal‐Organic Frameworks (MOFs), UiO‐66 and MIL‐125, to simultaneously adsorb and photo‐oxidize arsenic species from water. Our results demonstrate that the formation of AsV ions upon light irradiation promotes the subsequent adsorption of AsIII species. Thus, we propose the combined utilization of photocatalysis and adsorption with Metal‐Organic Framework photocatalysts for water remediation purposes.
Distributed video transmission reduction approach for energy saving in WMSNs
Authors: Abbood Iman Kadhum , Idrees Ali Kadhum 
Published: June 2024

SummaryWireless Multimedia Sensor Networks (WMSNs) are composed of a large number of sensor nodes that are distributed in a region to collect and transmit data. Video transmission is one of the most important applications of WMSNs because it can provide critical information about monitored areas. WMSNs face challenges related to energy consumption, bandwidth usage, and network congestion related to huge amounts of data collected by sensors. To tackle this problem, this paper proposes the Distributed Video Transmission Reduction Approach for Energy Saving in WMSN (DiViTRA). The method involves two phases: sensing and transmission phases. DiViTRA achieves frame rate adaptation to reduce the number of captured video frames and save energy during the sensing phase. In the transmission phase, three effective techniques, ORB (Oriented FAST and Rotated BRIEF), Brute‐Force (BF) Matcher, and Grid‐based Motion Statistics (GMS) are applied to decide whether to transmit the current captured frame or remove it and adjust the frame capturing rate of the video sensor accordingly. In the case of frame transmission, the DiViTRA approach compresses the frame using two data reduction approaches: PCA (Principal Component Analysis) and Huffman encoding. Through simulations, DiViTRA demonstrates a 12% reduction in energy consumption, and 71% is a ratio of reduction in sent frames while preserving stream quality. The approach has been validated in scenarios involving critical events, showcasing its efficacy in maintaining data integrity during transmission.
Acute atrazine intoxication in heifers: Case report and toxicological studies
Authors: Marron Yolanda M. , De Gerónimo Eduardo , Poo Juan I. , García Juan A. , Rustichelli Millán Gina , Britos Gastón E. , Lázaro Fermín , Cantón Germán J. 
Published: June 2024

AbstractAtrazine is a triazine organochloride herbicide, frequently used in different agricultural activities. Rare acute intoxication with atrazine is reported in production animals, and its metabolism in mammals is unknown. We report a spontaneous case of atrazine acute intoxication in 16.1% animals of a 168‐beef heifer herd exposed to the herbicide at a farm located in Buenos Aires province, Argentina. Affected heifers showed different neurological signs and died suddenly, similar to the previous natural atrazine intoxication report. During autopsy, no gross lesions were observed. Different body fluids and tissues samples were collected during postmortem examination. No relevant histopathological findings were observed. High levels of atrazine and its metabolites were detected in different fluids and tissues by ultra‐liquid chromatography high performance coupled to triple quadrupole mass spectrometry. These findings suggest ruminal or hepatic metabolization of atrazine in the exposed cattle. This is the first report of quantification and distribution of atrazine and its metabolites in intoxicated mammals providing relevant information for diagnostic purposes.
Increasing disturbance frequency undermines coral reef recovery
Authors: Emslie Michael J. , Logan Murray , Bray Peran , Ceccarelli Daniela M. , Cheal Alistair J. , Hughes Terry P. , Johns Kerryn A. , Jonker Michelle J. , Kennedy Emma V. , Kerry James T. , Mellin Camille , Miller Ian R. , Osborne Kate , Puotinen Marji , Sinclair‐Taylor Tane , Sweatman Hugh 
Published: June 2024

AbstractClimate‐driven alterations to disturbance regimes are increasingly disrupting patterns of recovery in many biomes. Here, we examine the impact of disturbance and subsequent level of recovery in live hard coral cover on the Great Barrier Reef (GBR) across the last three decades. We demonstrate that a preexisting pattern of infrequent disturbances of limited spatial extent has changed to larger and more frequent disturbances, dominated by marine heatwaves and severe tropical cyclones. We detected an increase in the impact (measured as coral loss) across 265 individual disturbance impacts on 131 reefs in a 36‐year dataset (1985–2022). Additionally, the number of survey reefs impacted by disturbance has increased each decade from 6% in the 1980s to 44% in the 2010s, as has the frequency of mass coral bleaching across the GBR, which has increased between 19% and 28% per year, and cyclones (3%–5% per year), resulting in less time for recovery. Of the 265 disturbance impacts we recorded, complete recovery to the highest levels of coral cover recorded earlier in this study (the “historical benchmark”) occurred only 62 (23%) times. Of the 23% of disturbance impacts that resulted in complete recovery to historical benchmarks, 34/62 recovered to their benchmark in 2021 or 2022. Complete recovery was more likely when the historical benchmark was <25% live hard coral cover. The lack of recovery was attributed to recovery time windows becoming shorter due to increases in the frequency of cyclones and of thermal stress events that result in mass coral bleaching episodes. These results confirm that climate change is contributing to ecosystem‐wide changes in the ability of coral reefs to recover.
Dead mammal walking: A month‐long march by a bison (Bison bison) after an ungulate–vehicle collision
Authors: Jung Thomas S. , Lewis Christopher J. , Miller Hannah A. , Kuba Kazuhisa , Thacker Caeley 
Published: June 2024

AbstractGlobally, ungulate–vehicle collisions (UVCs) are a major human safety concern and may also represent a significant source of mortality for some ungulate populations. However, records of UVC based on counts of roadside carcasses or reports by drivers involved in these incidents are assuredly underestimated because not all ungulates struck die immediately or at the roadside or are reported by drivers or authorities. Here, we provide an observation and analysis of the movements of a GPS‐collared bison (Bison bison) that was involved in a UVC on the Alaska Highway and died in a thick boreal forest 29 days later. During that time, she moved 49.7 km from where she was hit. Her daily movement rate (in kilometers per hour) and daily net displacement (in kilometers per day) were significantly greater in the 29‐day period before she was struck compared with 29 days afterward. This vivid example illustrates that individuals injured in a UVC can die several weeks later and at a considerable distance from where they were initially struck. Moreover, when they eventually die, it may be where their carcass would not be found or associated with a UVC. Bison are the largest land mammal in North America and perhaps more robust to some lower impact UVC than smaller bodied species. Even so, if not for the GPS collar on this bison, we would have never known the fate of this individual, and the carcass likely never found. Taken together, the movements and final resting place of this bison illuminate how estimates of mortality as a result of UVC can be underestimated when the animal does not die immediately and in a location where it can be found. Given our data, we further urge managers to consider roadside counts of animals killed in UVC as a minimum estimate when considering options for mitigation.
Circulating brain‐derived neurotrophic factor levels and heart failure: A systematic review and meta‐analysis
Authors: Behnoush Amir Hossein , Khalaji Amirmohammad , Fazlollahpour‐Naghibi Andarz , Bagheri Kimia , Goshtasbi Parmis , Mohseni Ghazal , El Kanty Aouatif Erasmia , Vinciguerra Caterina , Cannavo Alessandro 
Published: June 2024

AbstractAimsBiomarkers are paramount for managing heart failure (HF) patients as prognostic and therapeutic efficacy index tools. Systemic levels of brain‐derived neurotrophic factor (BDNF) can add to the HF biomarker scenario, allowing for potentiated efficacy in diagnosis, prognostic stratification, and prediction of patient response to a given therapeutic intervention because BDNF is one of the primary rulers of myocardial function. Yet, whether BDNF is a reliable clinical biomarker awaits clinical validation. Hence, we aimed to answer this relevant question via a systematic review and meta‐analysis of existing studies.Methods and resultsInternational databases, including PubMed, Scopus, Embase, and the Web of Science, were comprehensively searched for studies assessing BDNF levels in patients with HF versus non‐HF controls or as a prognostic factor for HF complications. Data were extracted and analysed by random‐effect meta‐analysis. Standardized mean difference (SMD) and 95% confidence intervals (CIs) were computed to pool the results of studies. We included 11 studies in the final review, among which six underwent meta‐analysis. These studies analysed 1420 HF patients, with a mean age of 65.4 ± 11.2 years. Meta‐analysis revealed that patients with HF had significantly lower circulating BDNF levels than healthy controls (SMD −2.47, 95% CI −4.39 to −0.54, P‐value = 0.01). Moreover, patients with higher New York Heart Association functional classification had lower levels of BDNF. Adverse clinical outcomes such as all‐cause mortality and HF rehospitalization were also associated with lower levels of BDNF in individual studies.ConclusionsBDNF levels are decreased in patients with HF. Most importantly, we observed an association between lower BDNF levels and poor prognosis in patients with HF. Our study supports BDNF as an easy‐to‐dose diagnostic and prognostic biomarker to be implemented in clinical practice for HF. Further studies are warranted to address this ability specifically.
Expansion of the National Amyloidosis Centre staging system to detect early mortality in transthyretin cardiac amyloidosis
Authors: Nitsche Christian , Ioannou Adam , Patel Rishi K. , Razvi Yousuf , Porcari Aldostefano , Rauf Muhammad U. , Bandera Francesco , Aimo Alberto , Emdin Michele , Martinez‐Naharro Ana , Venneri Lucia , Petrie Aviva , Wechalekar Ashutosh , Lachmann Helen , Hawkins Philip N. , Gillmore Julian D. , Fontana Marianna 
Published: June 2024

AbstractAimsTransthyretin cardiac amyloidosis (ATTR‐CA) is stratified into prognostic categories using the National Amyloidosis Centre (NAC) staging system. The aims of this study were to further expand the existing NAC staging system to incorporate an additional disease stage that would identify patients at high risk of early mortality.Methods and resultsThe traditional NAC staging system (stage 1: N‐terminal pro‐B‐type natriuretic peptide [NT‐proBNP] ≤3000 ng/L and estimated glomerular filtration rate [eGFR] ≥45 ml/min; stage 3: NT‐proBNP >3000 ng/L and eGFR <45 ml/min; stage 2: remainder) was expanded by the introduction of a new stage 4 (defined as NT‐proBNP ≥10 000 ng/L irrespective of eGFR) and studied in 2042 patients. The optimal NT‐proBNP cut‐point was established using time‐dependent receiver operating characteristic curves in the subgroup of patients with NAC stage 3 disease. Mortality at 1 year according to NAC stage was 2.3% (n = 20/886) for stage 1, 8.8% (n = 62/706) for stage 2, 10.4% (n = 28/270) for stage 3, and 30.6% (n = 55/180) for stage 4 (log‐rank p < 0.001). After adjustment for age, mortality hazard for stage 4 was >15‐fold higher than that of stage 1 (hazard ratio [HR] 15.5; 95% confidence interval [CI] 9.3–26.1) and >3‐fold higher than that of stage 3 (HR 3.4; 95% CI 2.2–5.4). The increased risk of early mortality was consistent across the different genotypes and subclasses of patients based on the severity of heart failure symptoms and echocardiographic parameters.ConclusionsThe proposed modification of the NAC staging system identifies patients with ATTR‐CA at a high risk of early mortality, who may benefit from a more intensive treatment strategy, and who are most likely to experience an event early in the course of a clinical trial.