bluuebunny/crossref_metadata_2025_split huggingface dataset:
First report ofNocardia wallaceiinfection in an immunocompetent patient in Zhejiang province
Authors: Pan Wei , Zhuo Bingqian , Wang Sumei , Long Jieping , Xu Wei , Chen Mengyuan , Hong Xin , Ge Yumei 
Published: June 2024

AbstractNocardiosis is an infectious disease caused byNocardiaspp., mainly affecting immunocompromised hosts.Nocardiainfection is not common; especiallyNocardia wallaceiinfection is even rarer. The patient, female, 61 years old, farmer, has been working in the field for a long time and has normal immune function. Her main clinical manifestation was persistent back pain. Chest-enhanced computed tomography showed pulmonary inflammation. Rare pathogenNocardia wallacei was detected in alveolar lavage fluid using matrix-assisted laser destructive ionization time-of-flight mass spectrometry. She received treatment with linezolid and was discharged after her condition improved.
Enhancing RF energy harvesting in smart cities with two port MIMO-UWB antenna design using machine learning algorithms
Authors: Nannepaga Bujjibabu , Varadarajan Souri 
Published: June 2024

Abstract
This work presents the two port ultra-wide band MIMO antenna with novel isolation structure and dual band RF Rectifier for 3.3 GHz and 4.65 GHz frequencies for RF energy harvesting applications. The anticipated antenna is systematically examined within the ultra-wideband (UWB) range from 3.1 GHz to 10.6 GHz design frequency with four different steps: Antenna 1, Antenna 2, Antenna 3 and Antenna 4 (optimal design) are chosen for comprehensive study. A unique isolation structure was developed between two identical elements separated by 10 mm, resulting in an enhanced isolation of −23.5 dB at 3.15 GHz, −27 dB at 5.8 GHz, −28 dB at 9.26 GHz and greater than −34 dB at 7.5 GHz. The suggested antenna resonates at UWB band and have fractional bandwidth of 118.66 % and a peak gain of 4.1 dB at 3.15 GHz, 3.68 dB at 5.8 GHz, 6.4 dB at 7.5 GHz and 3.2 dB at 9.26 GHz has been obtained. Radiation efficiencies of 92.5 %, 95 %, 90 % and 84.5 % at 3.15 GHz, 5.8 GHz, 7.5 GHz and 9.26 GHz were obtained respectively. The recommended MIMO performance is simulated using HFSS in terms of ECC, DG, MEG and CCL. The results adhere to specified requirements and confirmed by experimentation. An HFSS simulated dataset of reflection coefficient is used as input for the various ML algorithms namely, Support Vector Machine (SVM), Ensemble, k-nearest neighbors’ algorithm (KNN) and Gaussian Process Regression (GPR) models are trained with 80 % of the data and testing with 20 % of the data. The test results are compared and corresponding performance values of MAE, RMSE, MSE & R
2 are 0.00029, 0.00197, 3.87e−6 and 1.0 validation results and corresponding test results are 0.00031, 0.00229, 5.20e−6 and 0.999. Finally, the proposed dual band rectifier with a shorted stub is tested for harvesting applications at 3.3 GHz and 4.65 GHz frequency and it attained RF to DC conversion efficiencies of 69 % and 55.40 % respectively.
Dual grid energy management strategy for electric vehicles in hybrid microgrid utilizing matrix pencil method
Authors: Sahoo Buddhadeva , Samantaray Subhransu Ranjan , Rout Pravat K. , Panda Gayadhar 
Published: June 2024

Abstract
This study introduces a cutting-edge Matrix Pencil-based Dual Grid Energy Management System (MP-DEMS) aimed at seamlessly integrating electric vehicles (EVs) into power grids while enhancing power quality (PQ) and reliability (PR). Operating within an AC-DC hybrid microgrid (HMG) framework, the MP-DEMS reduces the necessity for additional conversion devices, simplifying the integration of EVs and batteries. The core of the proposed DEMS comprises three key modules: the Wind Energy Management Module (WEMS), Smart Storage and EV Power Coordination (SS-EVPC), and Coordinated Power Conversion Control (CPCC). These modules work together to optimize energy usage, leverage renewable sources effectively, and manage EV charging/discharging schedules to minimize grid impact. An innovative aspect of the MP-DEMS is its use of Matrix Pencil-based techniques, offering several advantages over traditional Discrete Fourier Transform (DFT) methods. These advantages include swift dynamic response, resilience to voltage variations, and precise voltage phase estimation. Software simulations and Hardware-in-the-Loop (HIL-402) testing validate the efficacy of the MP-DEMS approach, showcasing enhanced power transfer capabilities, improved harmonic performance, and superior voltage/frequency regulation within EV-HMS applications. Overall, the MP-DEMS presents a promising solution for advancing the integration of EVs into microgrid systems, contributing to a more sustainable and reliable energy future.
Evaluation of anti-nociceptive and anti-inflammatory activities of solvent fraction of the roots of Echinops kebericho Mesfin (Asteraceae) in mice model
Authors: Tadesse Tesfaye Yimer , Berihun Dagnew Samuel , Gobezie Yiblet Tesfagegn , Tesfaw Addis Getu , Kiflie Zemene Demelash 
Published: June 2024

Abstract

Objective
The present study was aimed at investigating the antinociceptive and anti-inflammatory activities of the solvent fractions of the roots of Echinops kebericho Mesfin in rodent models of pain and inflammation.

Methods
Successive maceration was used as a method of extraction using solvents of increasing polarity: methanol and water. Ethyl acetate, chloroform and distilled water were used as solvents of the fraction process. Swiss albino mice models were used in acetic acid induced writhing, hot plate, carrageenan induced paw edema and cotton pellet granuloma to assess the analgesic and anti-inflammatory activities. The test groups received different doses (100 mg/kg, 200 mg/kg and 400 mg/kg) of the three fractions (chloroform, ethyl acetate and aqueous). The positive control groups received ASA (150 mg/kg) for the writing test, morphine (10 mg/kg) for the hot plate method, diclofenac Na for carrageenan-induced paw edema, and dexamethasone (10 mg/kg) for granuloma, while the negative control group received distilled water.

Results
EA fraction at all test doses employed (100 mg/kg, 200 mg/kg, and 400 mg/kg) showed statistically significant (p<0.05, p<0.01, p<0.001 respectively) analgesic and anti-inflammatory activities in a dose-dependent manner. The AQ fraction on the other hand produced statistically significant (p<0.05, p<0.012) analgesic and anti-inflammatory activities at the doses of 200 mg/kg and 400 mg/kg, while the CH fraction exhibited statistically significant (p<0.05) analgesic and anti-inflammatory activity at the dose of 400 mg/kg.

Conclusions
In general, the data obtained from the present study elucidated that the solvent fractions of the study plant possessed significant analgesic and anti-inflammatory activities and were recommended for further investigations.
Thermoeconomic optimization with a dissipation cost
Authors: Ares de Parga-Regalado Angela M. , Ares de Parga Gonzalo 
Published: June 2024

Abstract
From a finite-time thermodynamics perspective, a thermoeconomic analysis of a Novikov model employing a linear heat transfer law is carried out. A new component in the cost function is proposed to examine its relationship with waste management while operating in the maximum power, ecological, and efficient power regimes. The methodology consists of optimizing the profit function by including our new waste management cost function, leveraging the same method used by DeVos (“Endoreversible thermoeconomics,” Energy Convers. Manage., vol. 36, pp. 1–5, 1995) and Pacheco et al. (“Thermoeconomic optimization of an irreversible novikov plant model under different regimes of performance,” Entropy, vol. 19, p. 118, 2017). Searching for the optimal thermoeconomic efficiencies for the ecological case a novel numerical method developed by the corresponding author (A. M. Ares de Parga-Regalado, “Analytical approximation of optimal thermoeconomic efficiencies for a novikov engine with a Stefan–Boltzmann heat transfer law,” Results Phys., 2023) is used. Analytical expressions for the optimal efficiencies are obtained, and the impact of the proposed term on these values is investigated.
Topological valley-locked waveguides with C4 impurity
Authors: Zhang Hongxiang , Xie Rensheng , Tao Xiaofeng , Gao Jianjun 
Published: June 2024

Abstract
Heterostructures play a pivotal role in the design of valley-locked waveguides, facilitating the manipulation of width as an additional degree of freedom. Through this design, we demonstrate the extension of the topological guided modes from the domain wall of topologically nontrivial valley photonic crystals (VPCs) into the trivial VPCs. We propose a C4 impurity to control the states of the light wave transmission in topological valley-locked waveguides through the intervalley scattering of defects in Quantum Valley Spin Hall topological insulators. By rotating the C4 structure, the ON/OFF (0°/45°) state of the valley-locked waveguides can be controlled, effectively serving as a switch component. Furthermore, many unique applications could be devised based on the introduced impurity. Examples include the development of coding channels with arbitrary output ports and energy concentrators with enhanced secondary concentration. The proposed topological valley-locked waveguides with C4 impurity will be beneficial for on-chip integrated photonic networks.
Crystal structure of poly[(μ2-5-bromoisophthalato-κ4
O,O
′:O
″,O
‴)-(μ2-1,4-bis(2-methylimidazol-1-ylmethyl)benzene-N:N′)cadmium(II)], C24H21BrCdN4O4
Authors: Xin-Tong Yao , Xiang-Yu Chen , Yang Liu , Man-Sheng Chen 
Published: June 2024

Abstract
C24H21BrCdN4O4, orthorhombic, Pnna (no. 52), a = 7.4860(5) Å, b = 17.7424(13) Å, c = 17.2241(12) Å, V = 2,287.7(3) Å3, Z = 4, Rgt
(F) = 0.0363, wRref
(F
2) = 0.0866, T = 296(2) K.
The crystal structure of catena-poly(μ2-1,4-bis-(1H-imidazol-1-yl)benzene-copper(I)) dichloridocopper(I), {[CuC12H10N4]+[CuCl2]−}
n
Authors: Wang Airong , An Hangyi , Wang Xiaoli , Shi Zhongfeng , Li Jiaming 
Published: June 2024

Abstract
[CuC12H10N4]⋅[CuCl2], triclinic, P1̄ (no. 2), a = 4.2957(9) Å, b = 8.718(2) Å, c = 9.878(3) Å, α = 67.58(2)°, β = 78.97(2)°, γ = 80.043(19)°, V = 333.63(15) Å3, Z = 1, Rgt
(F) = 0.0360, wRref
(F
2) = 0.0998, T = 296 K.
Crystal structure of tris(hexafluoroacetylacetonato-κ2O,O′) bis(triphenylphosphine oxide-κ1O)samarium(III), C51H33F18O8P2Sm
Authors: Li Wanbin , Jiang Jinke , Wang Xin , Liu Qiang 
Published: June 2024

Abstract
C51H33F18O8P2Sm, monoclinic, P21/c (no. 14), a = 12.8193(9) Å, b = 13.4721(8) Å, c = 30.280(2) Å, β = 91.227(3)°, V = 5,228.2(6) Å3, Z = 4, R

gt
(F) = 0.0370, wR

ref
(F
2) = 0.1025, T = 100.0 K.
Crystal structure of 1-phenyl-4-(2-furoyl)-3-furyl-1H-pyrazol-5-ol, C18H12N2O4
Authors: Jin Tong-Yin , Lin Xue-Mei , Zhu Bi-He , Zhang Heng-Qiang , Ma Chuang 
Published: June 2024

Abstract
C18H12N2O4, monoclinic, P21/c (no. 14), a = 12.3075(7) Å, b = 6.5075(3) Å, c = 18.4929(9) Å, β = 92.883(4)°, V = 1,479.24(13) Å3, Z = 4, R
gt(F) = 0.0394, wR

ref
(F
2) = 0.1047, T = 173 K.
Modifications and applications of aerogel prepared with waste palm leaf cellulose in adsorptions for oily contaminations
Authors: Tang Tao , Chen Rui , Lei Lirong , Hu Songqing , Hou Yi 
Published: June 2024

Abstract
Aerogels are essential and effective materials for oily pollution adsorption and recovery. This work described a hydrophobic modified cellulose aerogel using waste palm leaf and its oil adsorption mechanism. By chemical vapor deposition, Methyltrimethoxysilane (MTMS) was employed as a hydrophobic modifier for aerogel of waste palm leaf cellulose at 80 °C for 5 h, and the modified aerogel demonstrated exceptional and stable hydrophobicity with a water contact angle of 132.4° that can still be maintained above 120° after two months of air exposure. After 10 adsorption and extrusion cycles, kerosene adsorption capacity can still reach over 18 times its weight with good regeneration and reuse performance. The kinetic analysis found that the pseudo-second order model was more appropriate for the aerogel’s oil absorption process, including mainly physical adsorption at the beginning and the following chemical adsorption. Owing to its low cost, hydrophobicity, high absorption capacity, and favorable reusability, this aerogel is expected to be used in oils, organic solvent spill cleanup, and oil/water separation fields.
Near-infrared technology in agriculture: Rapid, simultaneous, and non-destructive determination of inner quality parameters on intact coffee beans
Authors: Munawar Agus Arip , Kusumiyati Kusumiyati , Andasuryani Andasuryani , Yusmanizar Yusmanizar , Adrizal Adrizal 
Published: June 2024

AbstractThis study delves into the ability of near infrared (NIR) techniques by means of a self-developed portable sensing device near-infrared reflectance spectroscopy (NIRS) i16 USK instrument to accurately predict the moisture content (MC) and chlorogenic acid (CGA) within intact coffee beans through the development of calibration models. Spectral absorbance measurements were conducted across the 1,000‒2,500 nm wavelength range. Leveraging two multivariate calibration approaches namely principal component regression and partial least square regression (PLSR) for 74 bulk coffee beans (60 g) in calibration and 36 bulk coffee beans samples in external validation. The results reveal a notably high determination coefficient (R2) of 0.984 for MC and 0.908 for CGA in calibration using PLSR, indicating the feasibility of rapid, simultaneous, and non-destructive prediction. Furthermore, upon external validation, the PLSR model exhibited consistent predictive performance, withR2values for MC and CGA contents reaching 0.978 and 0.846, respectively. Consequently, these outcomes underscore NIR as an effective, concurrent, and non-invasive means to assess the quality parameters and attributes of intact coffee beans, presenting promising prospects for the advancement of coffee quality evaluation.
Mapping the distribution of bioactive compounds and aroma/flavour precursors in green coffee beans with an integrated mass spectrometry-based approach
Authors: Bindi Greta , Smith Andrew , Crisafulli Paola , Denti Vanna , Bossi Eleonora , Serrao Simone , Piga Isabella , Sánchez William S. , Paglia Giuseppe , Magni Fulvio , Navarini Luciano 
Published: June 2024

Abstract
Coffee is one of the most enjoyed beverages worldwide and whilst a wide array of secondary metabolites has been qualitatively and quantitatively characterised within the coffee bean, little is known about their distribution in different bean tissues. In this work, complementary mass spectrometry (MS) based approaches were utilised to determine the spatial metabolomic content of coffee beans, focusing on highlighting those which presented a regiospecific distribution and distinguished the different endosperm regions and the embryo. Preliminary exploration of the spatial metabolome of Coffea arabica coffee beans highlighted tissue-specific molecular features through an unsupervised statistical analysis. Then, the complementary information derived from higher resolution MS approaches resulted in the annotation of 13 metabolites which showed a specific enrichment in at least one tissue, and most of these were noted to be bioactive compounds or aroma/flavour precursors. Knowledge of the tissue distribution of these compounds could shed light on their biological role in plant physiology and bean development, but could also have relevant implications for their positive impact on human health due to coffee consumption as well as their possible effect on aroma and flavour upon roasting of green coffee beans.
Sustainable HPLC technique for measurement of antidiabetic drugs: Appraisal of green and white metrics, content uniformity, andin vitrodissolution
Authors: Al-Wasidi Asma S. , Ahmed Hoda A. , Mahgoub Samar M. , Mohamed Mahmoud A. , Nassar Hossam F. 
Published: June 2024

AbstractGreen chemistry and white chemistry are two approaches to chemistry that prioritize sustainability and environmental protection. The pursuit of green chemistry is to develop chemical processes and products that decrease or stop the use and generation of dangerous materials. In contrast, white chemistry focuses on developing energy-efficient, sustainable chemical processes that produce minimal waste. Our study evaluated the environmental friendliness of the suggested approach, using eight greenness appraisal techniques, including analytical eco-scale, analytical method volume intensity, HPLC-environmental assessment tool, analytical method greenness score, analytical greenness, analytical greenness metric for sample preparation, green analytical procedure index, and complexgreen analytical procedure index, in addition to the unique metric blue applicability grade index of white chemistry. We have developed and validated a highly effective and reliable method for concurrently analyzing designated pharmaceutical medications characterized in metformin (MET) and empagliflozin (EMP) formulations, including their degraded products. This method is cost-effective, specific, and environmentally friendly, utilizing reversed-phase high-performance liquid chromatography with an XBridge BEH C8 column (150 mm × 4.6 mm, 5 μm) at a flow rate of 1.0 mL·min−1, an injection volume of 5.0 μL, a column oven temperature of 50°C, a wavelength of 224 nm, and a mobile phase comprised of phosphate buffer adjusted at pH 6.8 and acetonitrile in gradient mode. In the HPLC method, linearity has been achieved over the concentration range of 10–106 and 30–1,050 µg·mL−1for EMP and MET, respectively, with correlation coefficients more than 0.999 and good recoveries within 98–102%. An assessment of the content uniformity of finished products confirmed that they met the declaration’s acceptance standards (85–115%). A comparative study has been successfully conducted on generic and reference products, demonstrating their similarity. The suggested approach was validated by adhering to international council for harmonisation criteria.
Early Bubble CPAP Protocol Implementation and Rates of Death or Severe BPD
Authors: de Carvalho Nunes Gabriela , Barbosa de Oliveira Caio , Zeid Marco , Leone Marisa , Mardakis Stephanie , Remmer Elissa , Boyer Johanne , Hailu Elizabeth , Altit Gabriel , Beltempo Marc , Shalish Wissam , Sant’Anna Guilherme 
Published: June 2024

BACKGROUND
A multidisciplinary comprehensive protocol to use bubble continuous positive airway pressure (bCPAP) as the primary respiratory support in the delivery room (DR) and the NICU was introduced. With this study, we aimed to assess the association of this change with respiratory outcomes over time.

METHODS
Infants with gestational age &lt;32 weeks and birth weight &lt;1250 g admitted between January 2012 and June 2020 were included and categorized into 4 periods, including pre-implementation (P0: 2012–2014), and post-implementation (P1: 2014–2016, P2: 2016–2018, P3: 2018–2020). The primary outcome was the rates of death and severe bronchopulmonary dysplasia (BPD), and the secondary outcomes included the rates of DR and NICU intubation ≤7 days of age, need of surfactant, and pneumothorax. Multivariate logistic regression models accounting for relevant risk factors were used to calculate adjusted odds ratios (ORs).

RESULTS
The study included 440 infants (P0 = 90, P1 = 91, P2 = 128, P3 = 131). Over time, more infants were free of BPD (P &lt; .001), and the rates of death and severe BPD decreased significantly: P1 = OR 1.21 (95% confidence interval [CI] 0.56–2.67), P2 = OR 0.45 (95% CI 0.20–0.99), and P3 = OR 0.37 (95% CI 0.15–0.84). DR intubation decreased from 66% (P0) to 24% (P3) in the entire cohort (P &lt; .001) and from 96% (P0) to 40% (P3) in infants &lt;26 weeks of age (P &lt; .001). The need for NICU intubation was similar (P = .98), with a decreased need for surfactant (P = .001) occurring at higher FiO2 (P0 = 0.35 vs P3 = 0.55, P &lt; .001). Pneumothorax rates were unchanged.

CONCLUSIONS
In very preterm infants, the implementation of a comprehensive bCPAP protocol led to a significant and consistent improvement in respiratory practices and the rates of death and severe BPD.
Enhancing the role of dynamic capabilities of the coal companies under the conditions of sharp price fluctuations at the international markets
Authors: Sarychev A. E. , Myaskov A. V. , Stoyanova I. A. , Ivanov N. A. 
Published: June 2024

In recent years, international coal markets have been facing a trend of a growing number of sharp price fluctuations during a year. This can be regarded as the evidence for the increasing intensity of market competition as well as for the growing number and significance of the external environment factors affecting the world coal market. Actually, the coal market players have to operate in the conditions of unstable prices and external limitations that in their turn require searching for new sales markets, changing logistics routes, product lines, production and technological processes, etc. It results in the increasing significance of dynamic capabilities of coal companies – organizational capabilities on changing the portfolio of resource and capabilities in response to the changing competition at the market. In the conditions of growing volatility of coal markets the adaptation capabilities of a company become a basis for its economic effectiveness and competitiveness as well as for the viability as a whole as it allows to accelerate the process of making decisions about the necessary transformations and evaluate the risks, and are crucial for the implementation of new projects. Any activities on the evaluation and development of dynamic capabilities are possible only inside a company. This task should be solved at the strategic level of decision-making alongside with identifying the company’s individual priorities for development of organizational capabilities lying in the basis of dynamic capabilities of a company.The article deal with the author’s definition of the basic categories of dynamic capabilities implemented for the coal industry. The definition presents the priorities for operation in the current conditions and the capability to transform and accept new business-models, develop analytical capabilities and skills of acquisition and alliances with other companies.
Direct Estimation of the Source Corner Frequency of Minor to Moderate Earthquakes from Fourier Phase Spectra Fitting
Authors: Parolai Stefano 
Published: June 2024

ABSTRACT
Estimating the corner frequency (fc) of an earthquake is of fundamental importance to improving our knowledge of the physics of the rupture that gives rise to a seismic event, while also having important implications by providing information on the high-frequency radiation for seismic hazard studies. However, the estimation of fc through spectral-fitting methods suffers from trade-offs with the estimation of seismic wave attenuation, making the obtained values precise but not necessarily accurate. For this reason, after a review of the source model proposed by Brune (1970), a new method of estimating fc, based on the phase fitting of Fourier spectra of the Brune’s seismic pulse related to S-waves, called Fourier phase spectra fitting (FPS), is proposed and evaluated in this study. The method can be applied in cases in which Brune’s model may be appropriate, while also considering the effects of propagation on impulse deformation, for which the synthetic tests have been conducted. The results, obtained first using synthetic seismograms generated under controlled conditions and then on a data set of recordings of real seismic events collected at the Groningen gas field in the Netherlands, showed the method to be promising (being accurate and precise) and at the same time pointed out its limitations, with its applicability being restricted to short hypocentral distances of &lt;20 km.