bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ameliorated antimicrobial, antioxidant, and anticancer properties by Plectranthus vettiveroides root extract-mediated green synthesis of chitosan nanoparticles
Authors: Venkatesan Kamalesh Balakumar , Alamelu Saravanan , Priya Sivamathi Rathna , Jayaseelan Nivedha , Kamaraj Sathish-Kumar , Srinivasan Manoj Kumar , Alshehri Mohammed Ali , Panneerselvam Chellasamy , Saif Ahmed , Periyasamy Selvendiran 
Published: October 2023

Abstract
In this investigation, using the biogenic approach, Plectranthus vettiveroides root extract was used to synthesize chitosan nanoparticles (P. vettiveroides CNPs). The produced nanoparticles (NPs) were characterized using UV-visible (UV/vis) absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The typical absorption peaks in the UV/vis spectra were located around 253 nm. Functional groups were identified in P. vettiveroides CNPs by FTIR. As per SEM analysis, the NPs generated exhibited a spherical shape with an average diameter of 78.01 nm. In addition, the synthesized P. vettiveroides CNPs were examined for antioxidant and antibacterial properties and anticancer activities. They show a strong antioxidant activity compared to butylated hydroxytoluene as a standard antioxidant. P. vettiveroides root extract CNPs demonstrated the most significant zone of inhibition against Klebsiella pneumoniae (22 mm), followed by Escherichia coli (21 mm), Bacillus cereus (19 mm), and Staphylococcus aureus (17 mm). In addition, using MTT assay, anticancer efficacy against KB (oral cancer) cells was studied. The cytotoxic reaction was observed in a dosage-dependent manner. P. vettiveroides CNPs show bioefficacy because of their size and the existence of bioactive compounds, which can enhance antibacterial and anticancer activities by lysing bacterial and cancer cell walls.
Porous metal foam flow field and heat evaluation in PEMFC: A review
Authors: Aly Ayman A. , Abideen Saeed Jalil , Tao Yuning , Madsen Dag Øivind 
Published: October 2023

Abstract
A proton-exchange membrane fuel cell (PEMFC) generates electricity, heat, and water from oxygen and fuel. Hydrogen is recommended as a fuel because it is a renewable fuel when manufactured, for example, by water electrolysis using renewable energy power. Porous metal has excellent characteristics such as controlled permeability, low density, and high porosity. Corrosion is now the most major hurdle to the use of porous metal in PEMFCs, and owing to the porous metal’s complicated internal structure, additional challenges must be addressed in the coating preparation process. As a result, this article figures out how to successfully handle the porous metal corrosion problem in a PEMFC setting, which increases the porous metal utilization in the fuel cell industry. This article also examined the flow field in PEMFC and important characteristics. The influence of flow field in the fuel cell was also investigated.
A seven level fault tolerant hybrid cascaded inverter for renewable energy applications
Authors: Suresh Katta , Jayaram Nakka , Rajesh Jami , Kishore Pulavarthi Satya Venkata 
Published: October 2023

Abstract
The cascaded H-bridge (CHB) inverters are the prominent inverters used for renewable energy applications. Fault-tolerant operation is one of the foremost concerns to safeguard the continuous operation of the system under a fault on semiconductor switches and DC power supplies. A novel hybrid CHB inverter is proposed by adding a seven-level boost SLB module in cascade with the H-bridge modules. The proposed topology ensures the reliable and dynamic operation of the inverter during the occurrence of a fault. In addition to the fault-tolerant capability of the SLB inverter, the proposed design provides the voltage boosting and self-balancing of the switched capacitors. Extensive simulation results at different operating conditions substantiate the concept of the proposed novel fault-tolerant inverter structure. The prototype system is developed in the laboratory and the experimental results validate the proposed system configuration.
Earthquake convexity and some new related inequalities
Authors: Kadakal Mahir , İşcan İmdat , Kadakal Huriye 
Published: October 2023

Abstract
Unfortunately, eleven of our provinces were severely affected due to two severe
earthquakes that occurred in our country, the Republic of Turkey, on February 6, 2023. As a result, thousands of buildings were destroyed and
tens of thousands of our citizens lost their lives. From past to present,
such disasters have occurred in many parts of our world and will continue to happen. In order to raise awareness for researchers and academicians reading our article, we will give a new definition of convexity in this article,
and we will call it “earthquake convexity”. In this paper, we study some algebraic properties of the earthquake convexity. Then we compare the results obtained with both Hölder, Hölder–İşcan inequalities and power-mean, improved power-mean integral inequalities and show that the results obtained with Hölder–İşcan and improved power-mean inequalities are better than the others.
Some applications to special means of real numbers are also given.
Fast iterative regularization by reusing data
Authors: Vega Cristian , Molinari Cesare , Rosasco Lorenzo , Villa Silvia 
Published: October 2023

AbstractDiscrete inverse problems correspond to solving a system of equations in a stable way with respect to noise in the data. A typical approach to select a meaningful solution is to introduce a regularizer. While for most applications the regularizer is convex, in many cases it is neither smooth nor strongly convex. In this paper, we propose and study two new iterative regularization methods, based on a primal-dual algorithm, to regularize inverse problems efficiently. Our analysis, in the noise free case, provides convergence rates for the Lagrangian and the feasibility gap. In the noisy case, it provides stability bounds and early stopping rules with theoretical guarantees. The main novelty of our work is the exploitation of some a priori knowledge about the solution set: we show that the linear equations determined by the data can be used more than once along the iterations. We discuss various approaches to reuse linear equations that are at the same time consistent with our assumptions and flexible in the implementation. Finally, we illustrate our theoretical findings with numerical simulations for robust sparse recovery and image reconstruction. We confirm the efficiency of the proposed regularization approaches, comparing the results with state-of-the-art methods.
Identification of disulfidptosis-related genes and immune infiltration in lower-grade glioma
Authors: Li Xiao-min , Liu Shan-peng , Liu Dan-man , Li Yu , Cai Xiao-ming , Su Yun , Xie Ze-feng 
Published: October 2023

Abstract
Lower-grade glioma (LGG), a prevalent malignant tumor in the central nervous system, requires accurate prediction and treatment to prevent aggressive progression. We aimed to explore the role of disulfidptosis-related genes (DRGs) in LGG, a recently discovered form of programmed cell death characterized by abnormal disulfide accumulation. Leveraging public databases, we analyzed 532 LGG tumor tissues (The Cancer Genome Atlas), 1,157 normal samples (Genotype-Tissue Expression), and 21 LGG tumor samples with 8 paired normal samples (GSE16011). Our research uncovered intricate relationships between DRGs and crucial aspects of LGG, including gene expression, immune response, mutation, drug sensitivity, and functional enrichment. Notably, we identified significant heterogeneity among disulfidptosis sub-clusters and elucidated specific differential gene expression in LGG, with myeloid cell leukemia-1 (MCL1) as a key candidate. Machine learning techniques validated the relevance of MCL1, considering its expression patterns, prognostic value, diagnostic potential, and impact on immune infiltration. Our study offers opportunities and challenges to unravel potential mechanisms underlying LGG prognosis, paving the way for personalized cancer care and innovative immunotherapeutic strategies. By shedding light on DRGs, particularly MCL1, we enhance understanding and management of LGG.
Agricultural history in pastoral society of Mongolia
Authors: Cho Byounghak , Jeong Buyong , Kim Kisun 
Published: October 2023

Summary
The Mongols originated in Central Asia. They were a pastoral nomadic people, moving across the steppes of Central Asia with their herds of horses. After Mongol empire's invasion of Europe, Western Europeans were exposed to the true size and scope of the Eurasian landmass. They were exposed to different cultures, beliefs, values, attitudes, and institutions. The papacy and Europe were thus forced out of their narrow religious-geographic perspective. They began to realize that they had to deal with and relate to the non-Christian world with its many different peoples, religions, and cultures, as well as agriculture. The Europeans gradually assigned the Mongols and other Asians a permanent place in the natural order of things. After his defeat at Ulan Butung in 1690, the Oirat Khan in Mongol region, Galdan, retreated to Khovd, as a conflict with his nephew prevented him from going to the Jungar Mongols, and poor diplomatic relations with Central Asia blocked the region behind him. After the Khalkha invasion, interactions with the Qing and exchanges with Tibet were limited by Emperor Kangxi, whose economic policy restricted a nomadic economy. The poor pastures and scarce livestock in Khovd forced Galdan to creatively pursue two strategies. First, he asked Russia for military support to occupy Khalkha to solve the poor pasture problem. Second, he promoted agriculture, because it was more productive than nomadism. He recruited the Uyghur Taranqi, who had moved to Yili, and focused his efforts on developing agriculture. Beijiang’s agriculture among the Jungar Mongols was flourishing during the Baatar Hong taiji period. This paper explains the origins and development of agriculture in Western Mongolia and Khovd during the seventeenth century.
THE CONCEPT ON THE TERM OF MONGOLIAN THROAT SINGING
Authors: Lkhaasuren Kherlen 
Published: October 2023

Summary
Mongolian “throat singing” has been developed in association with life, religion and traditional customs of the Mongols since ancient time. Today, being considered as one of the authentic art of the nation, khoomei finds its significance in academic research of scholars not only from Mongolia, but also from other countries. The preliminary and important subject of the study related to throat singing refers to the origin of term "throat singing", its meaning, and appellation. The Mongols have created and developed their unique culture in the context of their lifestyle, economy, natural environment and their traditional customs for the centuries in their history. Khoomei is definitely an essential part of their culture, and an exceptional category of the nation’s art, which was brought up to the days as the true “Mongolian” piece.
Mongolian and other languages vocabulary interaction
Authors: Davaajav Gundsambuu 
Published: October 2023

Summary
Many generations of foreign and domestic scholars have paid special attention to the issue of Mongolian words from the languages of the peoples of the East, which have historical and cultural ties with Mongolia. Their works have an important place in the history of Mongolian linguistics. In the 21st century of science and technology, a rich vocabulary of words and terms from European languages such as Greek, Latin, English, French, German, Italian, and Spanish that have had a significant impact on the Mongolian language vocabulary has been identified and summarized from a linguistic point of view. Thus, scholars have focused on the study of words that have entered the Mongolian language from a foreign language, but there is still no comprehensive study of words that have entered the Mongolian language from a foreign language. Therefore, in the framework of the material collected in this article, we have considered the interaction of Mongolian language and vocabulary of these languages with the example of words from Mongolian, Russian, and French into Mongolian, as well as words from Turkish, Russian, and French.
“Singing as a messenger” or on the issue of “words of the apostle”
Authors: Otgon Ts. , Davaajav G. 
Published: October 2023

Summary
During the long years of historical development, the people of Mongolia have created many beautiful works that are a unique example of spirituality along with material wealth. As diplomatic relations expanded during the Chinggis khaan conquests, ambassadorships became increasingly specialized. The message to be delivered by the messenger was arranged in the form of short poems and sent to the messenger by heart. This is mentioned quite a few times in the “The Secret History of the Mongols”. Although the study of “The Secret History of the Mongols” has been translated into many languages, researches and translations have been carried out, but there is no study of small-form writings and genres in it. It seems that there are many things that have not been noticed in this text, which is the basis for studying the origin and development of mongolian poems and poetry. Therefore, in the future, it is necessary to deeply study the small form of writing and genre in this writing.
Inverse design and optical vortex manipulation for thin-film absorption enhancement
Authors: Bae Munseong , Jo Jaegang , Lee Myunghoo , Kang Joonho , Boriskina Svetlana V. , Chung Haejun 
Published: October 2023

Abstract
Optical vortices (OVs) have rapidly varying spatial phase and optical energy that circulates around points or lines of zero optical intensity. Manipulation of OVs offers innovative approaches for various fields, such as optical sensing, communication, and imaging. In this work, we demonstrate the correlation between OVs and absorption enhancement in two types of structures. First, we introduce a simple planar one-dimensional (1D) structure that manipulates OVs using two coherent light sources. The structure shows a maximum of 6.05-fold absorption gap depending on the presence of OVs. Even a slight difference in the incidence angle can influence the generation/annihilation of OVs, which implies the high sensitivity of angular light detection. Second, we apply inverse design to optimize two-dimensional (2D) perfect ultrathin absorbers. The optimized free-form structure achieves 99.90 % absorptance, and the fabricable grating structure achieves 97.85 % at 775 nm wavelength. To evaluate OV fields and their contribution to achieving absorption enhancement, we introduce a new parameter, OV circularity. The optimized structures generate numerous OVs with a maximum circularity of 95.37 % (free-form) and 96.14 % (grating), superior to our 1D structure. Our study reveals the role of high-circularity localized OVs in optimizing nano-structured absorbers and devices for optical sensing, optical communication, and many other applications.
Numerical study of static pressure on the sonochemistry characteristics of the gas bubble under acoustic excitation
Authors: Lu Chunyuan , Lou Zongyong 
Published: October 2023

Abstract
The extreme environment formed during bubble collapse can cause a series of chemical reactions inside the bubble, and multiple products (i.e., ˙OH, H˙, O, H2, and HO2˙, etc.) are produced, which is called sonochemistry. In this study, a new model is used to predict the sonochemistry characteristics inside an oxygen bubble oscillating in water. The influences of static pressure, ultrasonic frequency, and the equilibrium radius on the temperature inside the bubble and the yields of chemical products are analyzed. The numerical calculation results are obtained during bubble oscillations under a steady state, which is different from the previous studies that focus on the sonochemical characteristics at the bubble collapse. Numerical studies show that with the change in the equilibrium radius, the maximum bubble temperature fluctuates drastically, and the maximum yields of H2 and ˙OH show a Gaussian curve trend. The cavitation activity corresponding to the equilibrium radius depends on the combination of static pressure and ultrasonic frequency.
Numerical and experimental studies on the influence of gas pressure on particle size during gas-assisted extrusion of tubes with embedded antibacterial particles
Authors: Liu Bin , Huang Xingyuan , Ren Shaoyi , Zhang Xiaohui , Chen Shuiquan 
Published: October 2023

Abstract
During the gas-assisted extrusion process of plastic tubes embedded with antibacterial particles, the particles tend to agglomerate. The dispersion effect of these agglomerates using the nozzle-pressure-difference method is significantly influenced by the gas flow state. Therefore, this study establishes the nozzle dispersion model. The gas flow state near the nozzle is simulated and analyzed by using Ansys Fluent software. Gas-assisted extrusion experiments are conducted with different nozzle inlet pressures, and the size distribution of antibacterial particles is observed by using electron microscopy. The simulation results indicate that increasing the nozzle inlet pressure enhances the dispersion effect and expands the effective dispersion area. The experimental results demonstrate that using the nozzle disperses the agglomerates into particles with a diameter of approximately 100 nm. Furthermore, the nanoparticles diameter size decreases with the increase of the inlet pressure, validating the accuracy of the numerical analysis results.
Tomás Saraceno: semiotic regimes of posthuman temporalities
Authors: Charvát Martin 
Published: October 2023

AbstractSince 2007, Tomás Saraceno has been developing a project that aims to break out of the anthropocentric understanding of communication and coexistence with other animal organisms. In this article, I point out the importance of using modern visualization technologies to analyze and investigate the structure of communication frameworks and their modalities in the animal world, specifically using the example of spiders. The visualization of what is normally invisible to the eye and inaudible to the ear rearticulates the realm of the visible and the audible, which Saraceno then uses for art-critical purposes, with the aim of forming a new type of posthuman attunement to the environment and other animal species. The condition for outlining and articulating Saraceno’s artistic vision is the use of the latest technologies of visualization, which operate on the principle of digital and algorithmic code. They synthesize different planes of affectivity and transform, modulate, and combine the different modes of signs into a single technical-organic complex: they offer new ways of seeing and feeling the world. Thus, hybrid ecology in Saraceno’s case does not imply a return to primordial ways of life, but on the contrary, it forms a semiosphere attuned to a specific plane of consistency that enfolds distinct modes of signs and develops them into an expression of hitherto unsuspected variants of life.
Does the Menstrual Cycle Impact the Maximal Neuromuscular Capacities of Women? An Analysis Before and After a Graded Treadmill Test to Exhaustion
Authors: Morenas-Aguilar María Dolores , Ruiz-Alias Santiago A. , Blanco Aitor Marcos , Lago-Fuentes Carlos , García-Pinillos Felipe , Pérez-Castilla Alejandro 
Published: October 2023

AbstractMorenas-Aguilar, MD, Ruiz-Alias, SA, Blanco, AM, Lago-Fuentes, C, García-Pinillos, F, and Pérez-Castilla, A. Does the menstrual cycle impact the maximal neuromuscular capacities of women? An analysis before and after a graded treadmill test to exhaustion.J Strength Cond Res37(11): 2185–2191, 2023. This study explored the effect of the menstrual cycle (MC) on the maximal neuromuscular capacities of the lower-body muscles obtained before and after a graded exercise test conducted on a treadmill to exhaustion. Sixteen physically active women were tested at −11 ± 3, −5 ± 3, and 5 ± 3 days from the luteinizing peak for the early follicular, late follicular, and midluteal phases. In each session, the individualized load-velocity (L-V) relationship variables (load-axis intercept [L0], velocity-axis intercept [v0], and area under the L-V relationship line [Aline]) were obtained before and after a graded exercise test conducted on a treadmill to exhaustion using the 2-point method (3 countermovement jumps with a 0.5-kg barbell and 2 back squats against a load linked to a mean velocity of 0.55 m·second−1). At the beginning of each session, no significant differences were reported forL0(p= 0.726; ES ≤ 0.18),v0(p= 0.202; ES ≤ 0.37), andAline(p= 0.429; ES ≤ 0.30) between the phases. The MC phase × time interaction did not reach statistical significance for any L-V relationship variable (p≥ 0.073). A significant main effect of “time” was observed forL0(p< 0.001; ES = −0.77) andAline(p= 0.002; ES = −0.59) but not forv0(p= 0.487; ES = 0.12). These data suggest that the lower-body maximal neuromuscular capacities obtained before and after a graded treadmill test are not significantly affected by MC, although there is a high variability in the individual response.
Classifying Intensity Domains From Arm Cycle Ergometry Differs Versus Leg Cycling Ergometry
Authors: Astorino Todd A. , Robson Tanner , McMillan David W. 
Published: October 2023

Abstract
Astorino, TA, Robson, T, and McMillan, DW. Classifying intensity domains from arm cycle ergometry differs versus leg cycling ergometry. J Strength Cond Res 37(11): 2192–2199, 2023—This study compared the distribution of exercise intensity domains in response to progressive leg cycle ergometry (LCE) and arm cycle ergometry (ACE). Seventeen active men and women (age and body fat = 26 ± 7 years and 18 ± 3%) initially performed graded exercise on each modality to assess maximal oxygen uptake (V̇o
2max) and peak power output (PPO). Using a randomized crossover design, they subsequently performed moderate intensity continuous exercise consisting of three 15-minute bouts at 20, 40, and 60% PPO on each modality. Gas exchange data (V̇o
2, V̇co
2, and VE), respiratory exchange ratio, heart rate (HR), blood lactate concentration (BLa), and perceptual responses were acquired. Only 2 subjects were classified in the same intensity domains across modalities, with LCE eliciting more subjects exercising at “vigorous” and “near-maximal” intensities than ACE. Time spent above 70 (22 ± 7 vs. 15 ± 8 minutes, d = 1.03) and 80 %HRmax (15 ± 6 vs. 9 ± 6 minutes, d = 1.04) was significantly greater with LCE vs. ACE. Compared with ACE, LCE revealed significantly higher (p < 0.05) peak (94 ± 6 vs. 88 ± 9 %HRmax, d = 0.81) and mean HR (73 ± 6 vs. 66 ± 6 %HRmax, d = 1.20), V̇o
2 (54 ± 5 vs. 50 ± 7 %V̇o
2max, d = 0.68), and BLa (5.5 ± 2.0 vs. 4.7 ± 1.5 mM, d = 0.48). The results exhibit that progressive leg cycling at identical intensities elicits a greater cardiometabolic stimulus than ACE.