bluuebunny/crossref_metadata_2025_split huggingface dataset:
A numerical method based on hybrid orthonormal Bernstein and improved block‐pulse functions for solving Volterra–Fredholm integral equations
Authors: Ramadan Mohamed A. , Osheba Heba S. , Hadhoud Adel R. 
Published: February 2022

AbstractThis paper deals with the numerical solution of the integral equations of linear second kind Volterra–Fredholm. These integral equations are commonly used in engineering and mathematical physics to solve many of the problems. A hybrid of Bernstein and improved block‐pulse functions method is introduced and used where the key point is to transform linear second‐type Volterra–Fredholm integral equations into an algebraic equation structure that can be solved using classical methods. Numeric examples are given which demonstrate the related features of the process.
Allometry of Mexican hogfish (Bodianus diplotaenia) for predicting the body length of individuals from two pre‐Columbian sites in the Pearl Island archipelago (Panama)
Authors: Martínez‐Polanco María Fernanda , Béarez Philippe , Jiménez‐Acosta Máximo , Cooke Richard G. 
Published: February 2022

AbstractThe Mexican hogfish (Osteichthyes: Labridae, Bodianus diplotaenia Gill, 1862) is widely distributed throughout the tropical eastern Pacific from the Gulf of California to northern Peru, including all oceanic islands. Artisanal fishers occasionally capture it today and its remains are recovered at pre‐Columbian dwelling sites along the Pacific Coast of America. This paper addresses the advantages of using allometry to estimate size ranges of Mexican hogfish in pre‐Hispanic archeological samples from two ancient settlements in the Pearl Island archipelago of Panama: (1) Playa Don Bernardo (PdB), a preceramic site (6.2–5.6 kya), and (2) Bayoneta Island (BY‐10), a ceramic site (~1 kya). For creating the allometric model, a modern collection composed of 39 individuals covering a wide range of sizes and weights was used. All individuals have complete information about their total length (TL) and standard length (SL), which were recorded in millimeters (mm), and their total fresh weight (W) in grams (g). The TL of the sample ranged between 265 and 750 mm, and the SL between 210 and 487 mm. The W ranged between 273 and 3450 g. The most frequent bones (11) and otoliths were selected and 29 measurements were taken. The total length–weight relationship was W = 2E−05 TL3.0857 with R2 = 0.984. In general, it was observed that the relationships between the TL and the bone measurements had a strong correlation (R2 > 0.95). At PdB, the mean reconstructed length was 289.6 mm (TL), and at BY‐10, it was 283.6 mm (TL). The study of the archeological samples of B. diplotaenia could be used as a point of reference in modern ecological studies and fisheries management particularly in the Pearl Island archipelago.
Filtering‐based multi‐innovation recursive identification methods for input nonlinear systems with piecewise‐linear nonlinearity based on the optimization criterion
Authors: Fan Yamin , Liu Ximei 
Published: February 2022

AbstractPiecewise‐linear nonlinearity is an effective representation for hard nonlinearities such as saturation, dead zone, and backlash, which can be also used as a general tool for approximating nonlinear characteristics. For the input piecewise‐linear output‐error autoregressive systems, we develop a parametric expression of the piecewise‐linear nonlinearity through a switching function and position functions, and derive the identification model of the system by using the key item separation. Based on the optimization criterion, an auxiliary model‐based multi‐innovation recursive generalized least‐squares algorithm is deduced for estimating the unknown parameters according to the obtained model. Since the system is disturbed by colored noise, we introduce the data filtering technique from a view point of improving the parameter estimation accuracy. The filtering identification model of the system is derived and a filtering‐based multi‐innovation recursive generalized least‐squares algorithm is proposed. The simulation example demonstrates the effectiveness of the proposed algorithms and shows that the filtering‐based multi‐innovation recursive generalized least‐squares algorithm has better identification performance.
The bactericidal effect of oral care using matching transformation system: A prospective clinical study
Authors: Urakawa Ryuta , Shibata Takekatsu , Kimura Tomomasa , Gojo Nao , Sogou Motofumi , Takamori Kiyoto , Inoue Tsuyoshi , Konishi Kiyoshi , Sakai Takayoshi 
Published: February 2022

AbstractAimMatching transformation system (MA‐T) is an on‐demand aqueous chlorine dioxide solution that realizes excellent safety with various antimicrobial activities even under abundant organic compound. By using MA‐T in human oral care, we examined its effectiveness against bacteria causing oral infections such as periodontal disease and dental caries.Materials and MethodsThe participants of the 75th Annual Meeting of the Japanese Stomatological Society held on May 13 and 14, 2021, were enrolled in this study. Saliva samples were collected on the first day after normal oral care and on the second day after oral care with MA‐T. The total number of bacteria and the numbers of Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Streptococcus mutans, and Candida albicans were compared for the two samples on Days 1 and 2.ResultsTwenty‐two subjects met the study criteria. The total bacterial count and the number of T. forsythia on Day 2 were significantly lower than those on Day 1 (p = 0.000177 and p = 0.0186, respectively). The numbers of T. denticola and S. mutans tended to decrease, although not significantly (p = 0.100 and p = 0.251, respectively). Statistical analysis was not performed for P. gingivalis and C. albicans because of sample size.ConclusionMA‐T is putatively effective for oral hygiene. MA‐T oral care reduces bacteria that cause periodontal disease and dental caries compared with regular oral care. The results of this study suggest that MA‐T, a new disinfectant, can be applied to oral care and may reduce periodontal disease, dental caries, and other oral infections.
Chemical peptide macrolactonization via intramolecular S‐to‐S‐to‐O acyl transfer
Authors: Nagano Masanobu , Huang Yichao , Obexer Richard , Suga Hiroaki 
Published: February 2022

AbstractCyclic depsipeptides (CDPs) are a family of macrocyclic peptides containing an ester bond(s), generally found as secondary metabolites with bioactivities. Despite the interest of CDPs in drug development, de novo discovery of bioactive CDPs from artificial libraries had been yet challenging due to the lack of their efficient chemical preparation. Our recent report involving ribosomal synthesis of CDPs by means of genetic code reprogramming and S‐to‐O acyl shift chemistry has provided a unique approach for the preparation of CDP libraries and significant potentials that enable for screening of target‐binding species using an in vitro display system. However, even if the selection of binding‐active CDPs were successfully executed, it is unavoidable to chemically prepare a sufficient amount of CDPs for downstream bioassays. Prior to the selection, therefore, it is crucial for us to establish a synthetic methodology of various CDPs using standard solid‐phase chemical synthesis and the S‐to‐O acyl shift as the same key chemistry. Here we report a method of chemical macrolactonization via the S‐to‐S‐to‐O acyl shift, affording CDPs in high yields (~91%). This work links the ribosomal synthesis of CDPs to the chemical synthesis of their active species available from campaigns of the affinity‐based selection, enabling downstream bioassays.
On the chances and challenges of combining electron‐collecting nPOLO and hole‐collecting Al‐p+ contacts in highly efficient p‐type c‐Si solar cells
Authors: Peibst Robby , Haase Felix , Min Byungsul , Hollemann Christina , Brendemühl Till , Bothe Karsten , Brendel Rolf 
Published: February 2022

AbstractISFH is following a distinct cell development roadmap, which comprises—as a short‐term concept—the combination of an n‐type doped electron‐collecting poly‐Si on oxide (POLO) junction with an Al‐alloyed p+ junction for hole collection. This combination can be integrated either in front‐ and back‐contacted back junction cells (POLO‐BJ) or in interdigitated back‐contacted cells (POLO‐IBC). Here, we present recent progress with these two cell concepts. We report on a certified M2‐sized 22.9% efficient POLO‐BJ cell with a temperature coefficient TCη of only −(0.3 ± 0.02) %rel/K and a certified 23.7% (4 cm2 d.a.) efficient POLO‐IBC cell. We discuss various specific conceptual aspects of this technology and present a simulation‐based sensitivity analysis for quantities related to the quality of the hole‐collecting alloyed Al‐p+ junction which are subject to continuous improvement and thus hard to predict exactly. We report that the measured pseudo fill factor values decrease more due to metallization than would be expected from recombination in the metallized regions with an ideality factor of one only. The gap to pseudo fill factor values that are theoretically achievable at the respective open‐circuit voltages is 1.1%abs (Ga‐doped wafer) for POLO‐IBC and 1.4%abs (B‐doped wafer) to 2%abs (Ga‐doped wafer) for POLO‐BJ. With an embedded blocking layer for Ag crystallites in the poly‐Si, we present a concept to reduce this gap.
A remediation measure as an alternative to grade retention: A study on achievement motivation
Authors: Smith Jonathan , Paquin Stéphane , St‐Amand Jérôme , Singh Cara , Moreau Daniel , Bergeron Julie , Leroux Mylène 
Published: February 2022

AbstractThis study investigates the effects of an alternative approach to grade retention, known as a “remediation measure.” This measure was tested in 2010–2011 in two high schools in Quebec (Canada) and its effects on students' achievement motivation were analyzed. Specifically, the evolution of general and domain‐specific expectancy and value perceptions of 74 students who failed Grade 8 and experienced this measure (Mage = 14.81 years) were compared with those of 42 same‐age peers (Mage = 14.84 years) who graduated to Grade 9. This evolution was also examined as a function of teachers' support and friends' school attitudes. This measure appeared to have a favorable effect on competence beliefs, in general, and in French. However, the results did not reveal any moderating effects of teacher support and friends' school attitudes. Findings are discussed in light of research evidence concerning the role of social influence on achievement motivation.
Microfluidic fabrication of novel polymeric core‐shell microcapsules for storage of CO2 solvents and organic chelating agents
Authors: Zhao Yuan , Moshtaghibana Seyedarash , Zhu Tianle , Fayemiwo Kehinde A. , Price Adam , T. Vladisavljević Goran 
Published: February 2022

AbstractMonodispersed polymeric microcapsules loaded with CO2 solvents or chelating agents were produced by capillary microfluidics by photopolymerisation of three different UV curable materials, 1,6‐hexanediol diacrylate (HDDA), Norland Optical Adhesive (NOA) 81, and Semicosil® 949 UV A/B (PDMS). Polymerization of HDDA and NOA 81 started after exposure to UVA light for 5 s and was completed within a minute, as confirmed by continuous FT‐IR. Corrosive aqueous solutions of tetraethylenepentamine and diisopropyl iminodiacetic acid were encapsulated with 100% efficiency into poly(HDDA) and cured NOA81 shells without any leakage during prolonged storage. Poly(HDDA) shells were mechanically more stable than cured NOA81 and PDMS shells and resistant to drying‐induced shell buckling. NOA81 and PDMS capsules underwent morphological changes during freeze drying leading to the formation of dimpled and crescent‐moon‐shaped particles, respectively. The storage stability in a hypotonic solution and buckling resistance of PDMS shells were significantly improved by embedding carbon‐based nanomaterials into PDMS matrix. The incorporation of 0.5 wt% multi‐walled carbon nanotubes into PDMS matrix led to an increase in a Shore A hardness from 1.6 to 2.3. A uniform distribution of MWCNTs in the polymer network was confirmed by XRD. All fabricated shells were thermally stable up to the temperature of 300°C.
Low‐temperature reduction of SnO2by floating wire‐assisted medium‐pressure H2/Ar plasma
Authors: Nguyen Thi‐Thuy‐Nga , Sasaki Minoru , Hsiao Shih‐Nan , Tsutsumi Takayoshi , Ishikawa Kenji , Hori Masaru 
Published: February 2022

AbstractReduction of SnO2to form spherical Sn particles and Sn etching are obtained by floating wire (FW)‐assisted medium‐pressure H2/Ar plasma. High‐density H2/Ar plasma (1014 cm−3) with a larger treatment area at medium pressure (10 kPa) produces a two‐times higher removal rate of SnO2(0.111 mg/min) than that at atmospheric pressure with the same treatment area of 300 mm2. SnO2film is removed from the glass surface by a two‐step process involving (1) reduction of SnO2by FW‐H2/Ar plasma to form spherical Sn particles and (2) removal of low‐contact Sn particles by water‐based cleaning. High surface smoothness (roughness of 0.488 nm) and high optical transmittance (>92%) of treated samples indicate no damage compared to that of pristine quartz glass.
Compatibility of rapid enteral feeding advances and noninvasive ventilation in preterm infants—An observational study
Authors: Behnke Judith , Estreich Vanessa , Oehmke Frank , Zimmer Klaus‐Peter , Windhorst Anita , Ehrhardt Harald 
Published: February 2022

AbstractAimTo evaluate safety and clinical outcome of rapid enteral feeding advances in preterm infants <1500 g birthweight (BW).MethodsIn this single‐center retrospective cohort study, 293 preterm infants born during 2015–2018 were comparatively analyzed before (n = 145) and after (n = 148) the implementation of a rapid enteral feeding protocol with daily milk increments of 20–30 ml/kg of body weight. Major outcome parameters were focused toward pulmonary morbidities and nutritional variables.ResultsPreterm infants in the rapid feeding advancement group were more successfully stabilized on noninvasive ventilation (p < 0.001) never requiring mechanical ventilation. Duration of respiratory support (0.465) and frequency of bronchopulmonary dysplasia (BPD) (p = 0.341) and severe BPD (0.273) did not differ between both groups. Furthermore, patients in the rapid feeding group achieved full volume feedings faster (p < 0.001), regained BW earlier (p = 0.009), and displayed significantly improved somatic growth at 36 weeks gestational age (p < 0.001). There was no increased risk for further morbidities of prematurity including feeding intolerance, necrotizing enterocolitis (NEC), and focal intestinal perforation.ConclusionRapid enteral feeding advancements in preterm infants <1500 g BW are safe and do not impede stabilization on noninvasive ventilation.
Toxicity, horizontal transfer, and physiological and behavioral effects of cycloxaprid against Solenopsis invicta (Hymenoptera: Formicidae)
Authors: Zhang Lang , Wang Lei , Chen Jian , Zhang Jianlong , He Yinghao , Lu Yongyue , Cai Jiacheng , Chen Xuan , Wen Xiujun , Xu Zhiping , Wang Cai 
Published: February 2022

AbstractBACKGROUNDThe red imported fire ant, Solenopsis invicta Buren, is a significant urban, agricultural, and medical pest with a wide distribution in the world. Surface or mound treatment using contact insecticide is one of the main methods to control S. invicta. In the present study, cycloxaprid, a newly discovered neonicotinoid insecticide, was evaluated for S. invicta control and compared with two referent insecticides, imidacloprid and bifenthrin.RESULTSSurfaces or sand treated with cycloxaprid, imidacloprid, or bifenthrin caused high mortality of S. invicta workers, and the action of cycloxaprid or imidacloprid was slower than bifenthrin. Like imidacloprid and bifenthrin, cycloxaprid can be horizontally transferred from corpses or live donor ants to recipient ants. In addition, cycloxaprid‐ or imidacloprid‐treated surfaces significantly induced the activities of acetylcholinesterase (AChE) and detoxification enzymes; nevertheless, they had no significant effect on the foraging behaviors of S. invicta workers. Also, sand treated with cycloxaprid or imidacloprid did not negatively affect the digging activities of ants. Interestingly, S. invicta workers excavated significantly more sand containing 0.01 mg/kg cycloxaprid than untreated sand in the no‐choice digging bioassays. In addition, extensive nesting activities (sand excavation and stacking) were observed in the flowerpots containing untreated sand or sand treated with cycloxaprid or imidacloprid. On the contrary, bifenthrin significantly reduced the foraging, digging, and nesting activities of S. invicta workers.CONCLUSIONCycloxaprid is a slow‐acting and nonrepellent insecticide against S. invicta workers, and its contact and horizontal toxicities are slightly higher than imidacloprid. © 2022 Society of Chemical Industry.
Utilizing restricted mean duration of response for efficacy evaluation of cancer treatments
Authors: Huang Bo , Tian Lu 
Published: February 2022

AbstractIn oncology clinical trials, response‐based endpoints (time to response, objective response, duration of response [DOR]) are commonly used to detect therapeutic effect to support proof‐of‐concept or submission decisions. The restricted mean DOR (RMDOR) was recently proposed as a composite nonparametric method to efficiently quantify the treatment effect related to tumor reductions, which offers an intuitive way to perform statistical inference in cross‐arm comparison and has since been applied in some Phase III studies. In this paper, we provide further technical details and asymptotic properties of the RMDOR method and discuss the selection of the truncation time. A simulation study is conducted comparing the performance of the proposed method with existing standard methods in hypothesis testing and quantification of treatment efficacy. We use two oncology Phase III examples to illustrate the method. An R package PBIR and a SAS macro are available to perform statistical inference based on the RMDOR.
Cellulose‐based absorbent pad loaded with Carum copticum essential oil for shelf life extension of refrigerated chicken meat
Authors: Liu Guang‐Fa , Song Hai‐Yan , Zhang Qian , Wang Jian‐Qing , Wang Li‐Jun , Zhang Zheng‐Jian 
Published: February 2022

AbstractThis study aimed to investigate the effect of active absorbent pad containing Carum copticum essential oil (C. copticum EO) on shelf life and quality of refrigerated chicken meat. C. copticum EO release, total viable count (TVC), pH, total volatile nitrogen (TVB‐N), thiobarbituric acid reactive substances (TBARS) and sensory attributes were evaluated during 18 days of storage. The results showed that the release of thymol decreased gradually during storage and reduced to the lowest level on day 21. Active pad resulted in lower TVC, TVB‐N, pH and TBARS level compared with the reference/without active pad. The sensory quality of chicken meat was maintained longer compared to the control sample, which was attributed to the significant antimicrobial and antioxidant activity of C. copticum EO against spoilage microorganisms. Active absorbent pad loaded with 100 μl C. copticum EO demonstrated the best performance in extending the shelf life and maintaining the sensory attributes of the refrigerated chicken meat.
High dimensional reliability analysis based on combinations of adaptive Kriging and dimension reduction technique
Authors: Ji Yuxiang , Xiao Ning‐Cong , Zhan Hongyou 
Published: February 2022

AbstractHigh dimensional reliability analysis is unavoidable if a structural system involving stochastic process because Karhunen–Loève (K‐L) expansion is commonly used. Reliability analysis for structural systems with computationally intensive numerical models and high dimensions is challenging. In this study, an effective high dimensional reliability analysis method is proposed based on principal components and active subspace (PCAS) and active Kriging, and is termed as PCAS‐AK. The proposed method can address two shortcomings existing in PCAS: the latter select training samples randomly and cannot deal with parallel processing. The proposed method, however, selects training samples adaptively, subsequently, the training samples that have high contribution to probability of failure are selected, which can improve computational efficiency. To reduce overall computational time and allow parallelization, K‐weighted‐means combined with learning function are used to select multiple samples at each iteration. After the dimension reduction of both input and output spaces, the samples selected by adaptive method are used to construct Kriging model in the latent low‐dimensional space. Three examples are used to demonstrate the applicability and accuracy of the proposed method. Results show that the proposed method can deal with parallel processing and is, generally, more effective than PCAS for high dimensional reliability problems.
Analysis of low‐abundance molecules in complex matrices by quadrupole‐linear ion trap mass spectrometry using a simultaneous fragmentation and accumulation strategy
Authors: Li Chang , Jiang You , Chu Shiying , Yin Xinchi , Tan Siyuan , Huang Zejian , Dai Xinhua , Gong Xiaoyun , Fang Xiang , Tian Di 
Published: February 2022

RationaleFast and sensitive analysis of low‐abundance molecules in complex matrices has always been a challenge in chemical and biological applications. Mass spectrometry (MS) has been widely used in the fields of chemical and biological analysis due to its unparalleled specificity and sensitivity. However, the MS signals consistently deteriorate in the presence of matrices. Demands for more sensitive and efficient methods to analyze those low‐abundance molecules in chemical and biological systems are in urgent need.MethodsBased on a home‐made quadrupole‐linear ion trap (Q‐LIT) mass spectrometer, a simultaneous fragmentation and accumulation strategy was developed to improve the sensitivity of the analysis for the low‐abundance molecules in complex matrices. Ions were filtered by the quadrupole into the LIT. The precursor ions were fragmented and the product ions were isolated and accumulated in the LIT simultaneously. The fragmentation, isolation and accumulation processes were conducted at the same time. The accumulation time could be controlled to accumulate sufficient product ions.ResultsWith this strategy, the signal intensity of targeted molecules could be increased by 2–8 times and by increasing the accumulation time, this could be further enhanced. Those interferences induced by isomers and matrices can be reduced by using our method. We further applied our method to the quantification and analysis of biological samples. Tryptic digested peptides of myoglobin (Mb) were successfully detected by our method.ConclusionsWe have established a new method with great advantages in the detection of molecules in complex matrices. The application of this method promises better results in the bioanalytical area, especially for the analysis of substances in complex matrices in the future.