bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reconfigurable Spoof Localized Surface Plasmonic for Frequency Detections
Authors: Gao Xinxin , Ma Qian , Gu Ze , Cui Wen Yi , Cui Tie Jun , Chan Chi Hou 
Published: June 2023

AbstractUnder the impetus of wireless communications, metamaterials have attracted considerable attention due to their superior merits of free manipulation of electromagnetic waves and easy integration. However, most efforts to date are mainly focused on the modulation of wave information or recognition of wave intensity, while the frequency detection is rarely explored. Here, a spoof localized surface plasmon (SLSP) structure is proposed to realize reconfigurable frequency detections. By switching the bias voltage applied to the varactor, the resonance frequency of SLSP can be controlled dynamically from 1.95 to 2.35 GHz. The SLSP‐based waveguide has a relatively high quality factor due to the strongly localized field confinement. Reconfigurable frequency detection is demonstrated experimentally by monitoring the output voltage of the introduced detector. The measured and simulated results are in good agreement. This work will hold promising applications in wireless communication and sensing systems.
Scale‐Up Synthesis of Thermoresponsive Polymer Particles from Poly(N,N‐dimethylacrylamide‐co‐N‐isopropylacrylamide)‐b‐polystyrene via RAFT Emulsion Polymerization
Authors: Schymura Juliane , Held Martin , Georgopanos Prokopios 
Published: June 2023

AbstractIn this work, the reversible addition‐fragmentation chain transfer (RAFT) emulsion polymerization of poly(N,N‐dimethylacrylamide‐co‐N‐isopropylacrylamide)‐b‐polystyrene is developed with the aim of scale‐up of the polymer synthesis. Influences on the stability of the emulsion, reaction kinetics, and product quality are examined, compared between small‐scale and bench‐scale syntheses, and discussed in detail. The block copolymer lattices are studied via temperature‐dependent dynamic light scattering measurements in order to investigate the effects of the scale‐up on the thermosensitive behavior of the block copolymer and on emulsion stability. Conversion determination and polymer characterization are attained through 1H nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography, respectively. The emulsion polymerization is successfully scaled up after several changes in the reaction composition and shows promising results regarding desired properties of the polymer.
There's not much to tell: The impact of emotional resilience on negative word‐of‐mouth following service failure
Authors: Lteif Lama , Rubin Dan , Ball Joan , Lamberton Cait 
Published: June 2023

AbstractConsumers routinely experience service failures in their daily lives. Research regarding such service failures has primarily focused on characteristics of and actions taken by the service provider and has thus far overlooked the role that consumers' own cognitions might play in determining their behavioral responses to service failures. In particular, emotional resilience—or the ability to rebound from negative experiences (including even the most banal service failures)—has been neglected in prior research. Addressing this gap in the literature, we examine the mechanisms that highly resilient consumers use to manage the negative experience of service failures and gauge whether those mechanisms can effectively reduce negative word‐of‐mouth. Across three studies, we evince that high trait resilient individuals are less likely to engage in negative word‐of‐mouth following service failures because they spontaneously utilize cognitive reappraisal—a strategy for emotion regulation. Importantly, this research suggests that the emotion regulation strategies spontaneously adopted by high trait resilient individuals can be successfully utilized by all consumers after an external prompt. Managing consumers' emotional responses in the face of service failures is shown to have positive benefits for the firm by reducing negative word‐of‐mouth. Notably, such interventions may benefit firms even when the opportunity for a service recovery is not presented.
Upgrading the Toolbox: Two‐Photon Absorption Induced Cleavage of Coumarin Dimers for Light‐Based 4D Printing
Authors: Inacker Sebastian , Schipplick Luca , Kahler Philipp , Hampp Norbert 
Published: June 2023

AbstractThe use of light for shaping and changing matter is of high relevance in polymer and material science. Herein, a photopolymer method is presented, which comprises the combination of 3D photo‐printing at 405 nm light and subsequent modification under two‐photon absorption (TPA) conditions at 532 nm light, adding the fourth dimension. The TPA‐triggered cycloreversion reaction of an intramolecular coumarin dimer (ICD) structure occurs within the absorbing material. The 3D‐printable matrix does not show any degradation under the TPA conditions. With the presented photochemical tool of TPA processes inside absorbing 3D photo‐printable matrices, new possibilities for post‐printing modification, e. g. for smart materials, are added.
A novel heterozygous PKD1 variant causing alternative splicing in a Chinese family with autosomal dominant polycystic kidney disease
Authors: Zhao Qianying , Tan Yu , Xiao Xiao , Xiang Qinqin , Yang Mei , Wang He , Liu Shanling 
Published: June 2023

AbstractBackgroundAutosomal dominant polycystic kidney disease (ADPKD) is mainly caused by pathogenic variants of PKD1 and PKD2. Compared to PKD2‐related patients, patients with PKD1 pathogenic variants have more severe symptoms, present a gradual decline in renal function, and finally progress to end‐stage kidney disease with an earlier mean onset age.MethodsIn this study, trio exome sequencing (ES) was performed to reveal the genetic etiology in a Chinese family clinically diagnosed with polycystic kidney, followed by validation through Sanger sequencing on both genomic DNA and cDNA levels. Subsequently, targeted preimplantation genetic testing was provided for the family.ResultsA novel heterozygous PKD1 variant (c.1717_1722+11del) was detected in the proband and other clinically‐affected relatives. Interestingly, cDNA sequencing demonstrated that the variant, despite being annotated as non‐frameshift within exon 8, impacted the splicing of PKD1. Two abnormal transcription products were formed: one induced frameshift, while the other caused 133 amino acids to be inserted between exon 8 and exon 9.ConclusionsOur study revealed a novel PKD1 variant using ES as the cause of ADPKD in a Chinese family with multiple affected members. The variant at the exon‐intron boundary would induce alternative splicing, which should not be excluded from genetic analysis. Validated on the cDNA level could provide more comprehensive genetic information for disease stratification. And the novel variant expands the spectrum of PKD1 variants in ADPKD. The recurrent risk could be blocked accordingly for the families' offspring.
A negative‐resistance oscillator using dual‐cavity based on SISL technology
Authors: Han Jingwen , Ma Kaixue , Yan Ningning 
Published: June 2023

AbstractThis article presents a low‐phase noise negative resistance oscillator using the dual‐cavity resonator (DCR) based on substrate integrated suspended line (SISL) technology. Two air cavities are stacked without increasing the footprint areas of the oscillator. A coupling hole is introduced to realize weak coupling between the two air cavities. The DCR can enhance the roll‐off of the equivalent resonator. The measured Q factor of the DCR is increased by 15% compared with the single cavity resonator. The measured phase noise of the designed oscillator is −135.32 dBc/Hz at 1 MHz offset from the carrier frequency of 12.44 GHz, and the measured FOM at 1 MHz offset is −204 dBc/Hz. Besides, the designed oscillator based on SISL technology has the advantages of low cost, compact size, and self‐packaging properties.
Design of switchable dual‐band frequency‐selective rasorber/absorber
Authors: Ding Dajun , Xue Zhenghui , Ren Wu , Li Weiming 
Published: June 2023

AbstractThis article presents a novel design of a switchable dual‐band frequency‐selective rasorber/absorber, which is a double‐layered structure. At the top layer, two electric‐field‐coupled resonators with different size are utilized to achieve two transmission bands. At the bottom, to achieve low insertion loss, the frequency‐selective surface based on slots with different lengths resonates at the same frequency as the top layer. By controlling the bias voltage of PIN diodes, the structure can be switched between dual‐band rasorber/absorber mode. The operating principle is analyzed by an equivalent circuit model. When the diodes are in the OFF state, it shows two transmission bands at 2.86 GHz with 0.47 dB insertion loss and 3.61 GHz with 1.04 dB insertion loss. When the diodes are in the ON state, it exhibits a wide fractional absorption bandwidth of 90.1%. Meanwhile, the proposed dual‐band switchable structure is fabricated and measured. There is a good agreement between simulation and measurement.
Reflector‐based highly isolated dual‐polarized multibeam antenna
Authors: Wang Hong , Zhang Liqiang , Zhang Huan , Fang Xinrui , Fang Liang , Song Lizhong 
Published: June 2023

AbstractIn this paper, a dual‐polarized multibeam antenna in X‐band is designed and physically fabricated using a parabolic reflector. The antenna consists of a feed array and a metal reflector. A dual‐polarized microstrip antenna array combining two design approaches, T‐coupled feed and defective ground structure, is adopted as the feed array to improve polarization isolation. In addition, the electromagnetic bandgap structure is loaded between the antenna units to reduce the mutual coupling and improve the isolation between the units. A nine element of the highly‐isolated dual‐polarized microstrip antenna array is designed to be placed on the focal plane of the parabolic reflector as the feed, and the beam deflection is realized by using the lateral defocus effect of the parabolic plane, which can finally realize nine single beams covering a 30° scanning range in both horizontal and vertical polarization modes. Based on the scanning state of multiple point beams, this paper uses the Fourier series for beam assignment to form a flat‐top beam with a wide scanning angle. The application of the antenna with two operating modes of wide beam and multibeam to navigational satellite systems can greatly improve the accuracy and efficiency of navigation.
A multibeam folded transmitarray antenna at Ku‐band
Authors: Song Wenke , Ding Haibing , Cai Yang , Guo Naining , Liu Kegang , Li Sen , Zhang Bin , Xue Qianzhong 
Published: June 2023

AbstractIn this letter, a multibeam folded transmitarray antenna based on an improved phase matching method is presented. A Ku‐band magneto‐electric dipole antenna is designed as the primary source for the proposed antenna. Besides, a Fabry–Perot metasurface with high transmission efficiency is proposed. Finally, a multibeam folded transmitarray antenna is designed, simulated, fabricated, and measured. By exciting different ports, the proposed antenna achieves a ±25° scanning range. The impedance bandwidth is 14%, and the measured peak gain is 23.5 dBi, which means the aperture efficiency is about 17.8%. Measured results show that the proposed antenna achieves a good multibeam performance while maintaining a low profile.
Formulated feeds prolong the reproductive period of a cultured echinoid
Authors: Warren Emily M. , Curtis Lyanne J. F. , Cross Stephen F. , Zaklan Duff Stefanie D. , Pearce Christopher M. 
Published: June 2023

Abstract

Objective
The production of echinoid larvae and juveniles is required in both wild-population enhancement programs and full life-cycle culture. Many echinoid species of commercial interest spawn only once or twice a year, however, restricting temporal access to viable broodstock. High-energy/high-protein formulated feeds have been used for gonad enhancement of a variety of echinoid species, but the goal of that activity has always been to produce premature gonads, which the market requires, not the production of mature gonads for breeding. The present investigation, originally established to examine gonad enhancement, took advantage of a spawning event to assess the efficacy of a formulated feed to extend the spawning period or reduce gonad recovery time after spawning in a commercially relevant echinoid, the green sea urchin Strongylocentrous droebachiensis.

Methods
Urchins held in suspended sea cages were fed either a formulated, commercial, pelleted urchin diet or bull kelp Nereocystis luetkeana over 12 weeks, with survival, somatic growth, gonad quantity (wet weight, yield), and gonad quality (presence/absence of gametes) being examined over time.

Result
Survivorship after 12 weeks was high, little difference being observed between the two diets (mean ± SE: 98.2 ± 1.1% and 95.9 ± 1.9% for kelp and formulated feed, respectively). There was no significant difference in somatic growth between the two treatments, but the formulated feed led to significantly higher gonad wet weight and yield than kelp at the end of the study. When compared with kelp, the formulated feed may have led to earlier spawning and quicker gonad recovery and prevented the complete spawning of all urchins, thus extending the period of gamete availability.

Conclusion
Formulated feeds may have the potential to maintain reproductively active broodstock over an extended time, allowing expansion of the period in which echinoid larvae and juveniles can be produced.
Comparative analysis of hemato-biochemical profile, growth performance, and body composition of Common Carp cultured under different feed and habitats (biofloc technology and earthen pond systems)
Authors: Habib Syed Sikandar , Batool Aima Iram , Rehman Muhammad Fayyaz Ur , Naz Saira 
Published: June 2023

Abstract

Objective
In the current study, a 4-month experiment was conducted to investigate how two regularly used commercial feeds and two different environments (pond and biofloc systems) influence the haemato-biochemical profile of Common Carp Cyprinus carpio.

Methods
Feeds (crude protein levels 30% and 28%) were selected due to their common use for carp culturing in Sargodha, Punjab, Pakistan. Weekly surveys were conducted on the two fish farming systems, where the fish fed on different diets twice a day at 3% of their body weight. Water quality parameters were appropriate throughout the study. Haemato-biochemical parameters were measured using standard protocol. In addition, the growth and muscle composition of Common Carp (initial average body weight ± SD of 15.2 ± 0.9 g) were also evaluated.

Result
According to the results, the number of haemato-biochemical parameters, growth rate, and body muscle composition of fish fed on feed A compared to feed B was significantly higher (p &lt; 0.05). However, on the basis of habitat, the haemato-biochemical parameters, growth rate, and muscle composition were mostly significantly greater in biofloc fish compared to pond fish with a low mortality rate. Additionally, the alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase results in both systems were nonsignificant (p &gt; 0.05). Further, the protein content of both feeds was positively related to the length and weight gain of the fish. As shown by the regression R2 and p-value, crude protein in both feeds is more effective in biofloc technology.

Conclusion
Hence, feed A and biofloc technology were proved to be more suitable for the fish blood profile, growth parameters, and muscle composition. The current study provides the basic knowledge necessary to observe fish blood profile, growth, and muscle composition, which could be vital to understanding fish culture management and environmental factors.
A qualitative exploration of Irish nursing students' experiences of caring for the dying patient
Authors: Hardie Philip , McCabe Catherine , Timmins Fiona , Thompson David R. 
Published: June 2023

AbstractAimTo explore Irish nursing students' experiences of caring for dying patients and their families to understand these experiences and determine whether or not students felt prepared for this role.DesignThis study used a qualitative descriptive research design.MethodsOne to one semi‐structured interviews were used to collect data, implementing open‐ended questions to explore seven student nurses' experiences.ResultsFive main themes emerged: Student's first experiences, emotional experience of caring, educational preparation, challenging aspects of caring for dying patients and their families and need for support in practice. Students' first experience of caring for a dying patient and their family was a confronting event for students, both personally and professionally. Nursing students require adequate and timely education on end of life care and a practical and supportive clinical learning environment to effectively support and prepare students for caring for a dying patient and their family.
Student perception and performance with self‐guided learning in soil science laboratory courses
Authors: Wolters Bethany , Angel Hannah , Lepcha Isaac 
Published: June 2023

AbstractDuring the COVID‐19 pandemic, preexisting soil science laboratories were redesigned for self‐guided learning (SGL). The SGL laboratories occurred on‐campus during the fall 2020 semester in two introductory soil science courses at the University of Tennessee at Martin and Virginia Polytechnic Institute and State University. Students carried out the activities by visiting multiple outdoor sites on campus, individually or in pairs, without the instructor. Students accomplished this by following instructions provided on location sign boards and instruction manuals. We evaluated student perceptions of the SGL laboratories using an optional qualitative survey that students completed post‐laboratory and student performance on SGL activities using rubrics. Our results showed that students found the difficulty level and amount of time required for the SGL laboratories to be equal to traditional in‐person laboratories. Most students found the SGL laboratories enjoyable or very enjoyable because of the flexibility and hands‐on learning outdoors. Students recommended more SGL laboratories during and after the pandemic, preferably accompanied by frequent student–instructor interaction. Rubric analysis showed that SGLs were best suited for practicing previously learned skills in practical contexts and learning simple skills and concepts, but students did not perform well with complex and abstract concepts. Overall, students were able to successfully complete SGL laboratory activities in a hands‐on yet socially distanced way. The results suggest that SGLs can be implemented in post‐pandemic lectures and laboratory courses designed for hands‐on learning in a distance learning format.
Neoadjuvant chemotherapy or upfront surgery in hepatoblastoma: A multicenter retrospective study
Authors: Tian Yu , Chen Xinghai , Yu Fan , Feng Jiayi , Huang Guimin , Ren Xianghai , Hu Huimin , Zhang Weiling , Li Long 
Published: June 2023

AbstractBackgroundWe retrospectively investigated the role of neoadjuvant chemotherapy in low‐risk patients with hepatoblastoma (HB) who underwent curative resection between February 2009 and December 2017. We also verified the feasibility of the risk stratification system to select the optimal patients for upfront surgery.ProcedureWe compared 5‐year overall survival (OS) and event‐free survival (EFS) between the upfront surgery (n = 26) and neoadjuvant chemotherapy (n = 104) groups at three oncology centers in Beijing, China. To reduce the effect of covariate imbalance, propensity score matching (PSM) was used. We explored whether preoperative chemotherapy affected surgical outcomes and identified the risk factors for events and death, including resection margin status, PRETreatment EXTent of disease stages, age, sex, pathology classification, and α‐fetoprotein levels.ResultsThe median follow‐up period was 64 (interquartile range 60–72) months. After PSM, 22 pairs of patients were identified, and the patient characteristics were similar for all variables included in PSM. In the upfront surgery group, the 5‐year EFS and OS rates were 81.8% and 86.3%, respectively. In the neoadjuvant chemotherapy group, the 5‐year EFS and OS rates were 81.8% and 90.9%, respectively. No significant differences in EFS or OS were observed between the groups. Pathological classification was the only risk factor for death, disease progression, tumor recurrence, other tumors found during HB diagnosis, and death from any cause (p = .007 and .032, respectively).ConclusionsUpfront surgery achieved long‐term disease control in low‐risk patients with resectable HB, thus reduced the cumulative toxicity of platinum‐based chemotherapy drugs.
First‐trimester screening strategies: A balance between costs, efficiency and diagnostic yield
Authors: Bardi Francesca , Kagan Karl Oliver , Bilardo Caterina Maddalena 
Published: June 2023

Key points
What's already known about this topic?

An early scan at 11–13 + 6 weeks offers the ideal opportunity for a first detailed anatomical assessment of the fetus.

Non‐invasive prenatal testing (NIPT) is superior to the combined test to screen for common trisomies, especially trisomy 21, in both singleton and twin pregnancies.

What does this study add?

In first‐trimester screening strategies based on NIPT and ultrasound, many factors must be considered when choosing how to combine the two methods. We propose four screening strategies with different pro‐ and contra arguments.

The article may help choose the strategy that best fits local needs and health economic considerations.
Electrical conductivity and species distribution of aluminum chloride and 1‐butyl‐3‐methylimidazolium chloride ionic liquid electrolytes
Authors: Nahian Md Khalid , Reddy Ramana G. 
Published: June 2023

AbstractElectrical conductivity (σ) of aluminum chloride (AlCl3) and 1‐butyl‐3‐methylimidazolium chloride (BMIC) ionic liquid (IL) was investigated as a function of temperature and AlCl3 mole fraction (
). Electrochemical impedance spectroscopy was used to measure the electrical conductivity. Composition of AlCl3:BMIC ionic liquid was varied by changing the
from 0 to 0.67. The temperature was changed from 70°C to 110°C at 10°C intervals. It was found that the electrical conductivity increases with an increase in temperature. Electrical conductivity increases with
from 0 to 0.5 and then starts to decrease after
= 0.5. A species concentration profile was developed based on thermodynamic model at room temperature for the IL containing
,
,
,
,
,
, and
at different
. The only anion species presents between 0 and 0.5
are
and
. Anions like
,
,
, and
are found at higher
. A good agreement between the model and the experimental data was obtained. The variations in anion concentration, molecular structure, and cation–anion interactions are to be the causes of the changes in electrical conductivity of AlCl3:BMIC system.
Esophageal lung complicated by recurrent pneumonia
Authors: Kumar Abhinandan , Babbar Sushant 
Published: June 2023

AbstractA 6‐month‐old infant with recurrent respiratory infections, rapid breathing, and reduced air entry on the right side was diagnosed with congenital bronchopulmonary foregut malformation (CBPFM). Imaging revealed a collapsed and underdeveloped right lung, with the right bronchus appearing to originate from the lower part of the esophagus. An esophagogram confirmed the diagnosis by showing contrast flowing freely from the lower esophagus to the right bronchus.