bluuebunny/crossref_metadata_2025_split huggingface dataset:
Morphometric Analysis of the Fronto-maxillary Sinuses in Adult Patients with Traumatic Septal Deviations
Authors: İnal Mikail , Simsek Gokce , Kaya Ahmet , Kilic Rahmi 
Published: June 2017

Objective:
The aim of the current study was to investigate a change in the volume of the
frontal and maxillary sinuses in patients with nasal septum deviations due to physical trauma.

Materials and Methods:
Paranasal sinus computed tomography data of 100 patients admitted to
Kirikkale University medical faculty hospital between November 2013 and June 2014 were retrospectively
analyzed. The side of the nasal septal deviation, the deviation angle, the severity of the
deviation, and bilateral frontal and maxillary sinus volumes were calculated using a computer program.
The relationship between sinus volumes and deviated septum characteristics was investigated.

Results:
The maxillary sinus volumes did not differ between the two genders. However, the female
patients had significantly decreased frontal sinus volumes when compared with the male patients (p
< 0.05). A right-sided septal deviation was found to be associated with a significantly decreased
maxillary sinus volume (p < 0.001), and the severity of the deviation was a significant determinant
of the maxillary sinus volume (p < 0.001). The age of the patient at the time of the septal trauma
was significantly associated with their maxillary sinus volumes. Patients who had experienced this
trauma after 12 years of age had significantly increased maxillary sinus volumes when compared
with those who experienced the trauma before the age of 12.

Conclusion:
A distorted septal anatomy was found to be a significant parameter for developing
paranasal sinuses. Right-sided and severe traumatic deviations with an onset before the age of 12
were significantly associated with a decreased maxillary sinus volume.
Ultrasound Fetal Image Segmentation Techniques: A Review
Authors: Sree S. Jayanthi , Vasanthanayaki C. 
Published: June 2017

Background:
This paper reviews segmentation techniques for 2D ultrasound fetal images.
Fetal anatomy measurements derived from the segmentation results are used to monitor the
growth of the fetus.
</P><P>
Discussion: The segmentation of fetal ultrasound images is a difficult task due to inherent artifacts
and degradation of image quality with gestational age. There are segmentation techniques for particular
biological structures such as head, stomach, and femur. The whole fetal segmentation algorithms
are only very few.

Conclusion:
This paper presents a review of these segmentation techniques and the metrics used to
evaluate them are summarized.
História e retórica na análise do proêmio da obra Guerra persa
Authors: Vasconcelos Baptista Lyvia 
Published: June 2017

<div class="page" title="Page 40"><div class="layoutArea"><div class="column"><p><span>A redescoberta da retórica no cenário acadêmico ocasionou uma ampliação do sentido hermenêutico agregado ao termo, revelando seu potencial como teoria da compreensão dos discursos. O objetivo deste artigo é apresentar a leitura retórica como possibilidade de abordagem do documento histórico, a partir da interpretação do proêmio da obra </span><span>Guerra Persa</span><span>, cuja autoria remete-se a Procópio de Cesaréia, no século VI d.C. </span></p></div></div></div>
Sexto Empírico: ética, linguagem e epistemologia do século II d.C. em Alexandria
Authors: De Brito Rodrigo Pinto 
Published: June 2017

<p>Este artigo trata dos seguintes tópicos da filosofia cética de modalidade pirrônica: ética, linguagem e epistemologia, conforme pensados pelo médico alexandrino do século II d.C. Sexto Empírico, seu principal expoente. Recorremos à interpretação de Myles F. Burnyeat, Michael Frede e Jonathan Barnes para elucidar a questão da viabilidade prática da vida cética, problema que tem sido a principal réplica ao ceticismo desde o ataque cético à filosofia da <em>Stoa</em>. Levando então em consideração o acirrado debate ocorrido entre as principais filosofias do período Helenístico, propusemos uma investigação sobre como se articulam o problema do conhecimento e de sua aquisição, da filosofia prática e da atitude discursiva do cético para compreender a réplica de Sexto ao argumento de que o cético se auto-refuta.</p><div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><strong>Sextus Empiricus: ethics, language and epistemology of the second century a.C. in Alexandria </strong></p><p><strong>Abstract</strong></p><p><span>This paper deals with the following topics of the sceptical philosophy of the Pyrrhonic kind: ethics, language and epistemology, as thought by the Alexandrian medic of the second century A.C. Sextus Empiricus, which was the main exponent of the Pyrrhonism. We use the interpretations of Myles F. Burnyeat, Michael Frede and Jonathan Barnes to elucidate the problem of the practical viability of the sceptical life, which has been the main reply to the scepticism since the sceptical attack to the Stoic philosophy. Considering then the strained debate happened between the main philosophies of the Hellenistic period, we propose an investigation about how the problem of the knowledge and his acquisition articulates himself with the problems of the practical philosophy and of the sceptical’s discursive attitude, this all is necessary to comprehend the Sextus’ reply to the argument of the sceptical self-refutation. </span></p><p><strong>Keywords: </strong><span>practical philosophy; knowledge; Sextus Empiricus; Pyrrhonism </span></p></div></div></div>
Impact of M&A Announcement on Stock Returns of Acquirer Companies: New Evidence from Indian Stock Market
Authors: Vij Richa 
Published: June 2017

Mergers and Acquisitions (M&As) are often used as preferred tools of corporate structuring to serve a variety of business objectives and add value for the shareholders. Earlier studies have triggered a number of questions regarding the impact of M&As for the shareholders of acquiring companies. This paper focuses on the M&A among Indian companies and the response of the Indian capital market to such attempts as reflected in the changes in the stock return for different window periods close the M&A announcement. The findings of the present study suggest that there is significant impact of M&A announcement on stock returns for almost half of the sample acquirer companies. The study offers evidence in support of the contention that Indian stock market is not efficient in the semi-strong form with respect to M&A announcement information for acquirer companies and emphasizes that investment analyst cannot ignore the information regarding the M&A deals.
Number of Facial Hair Corresponds to Frequency of Spontaneous Face‐Touch in Humans
Authors: Grunwald Martin , Pasatu Welda P. M. , Spille Jente , Haensel Rene , Stieler Jens , Holzer Max , Ziemer Mirjana , Butz Kevin H.G. , Martin Sven , Mueller Stephanie Margarete , Morawski Markus 
Published: October 2024

AbstractPeople all over the world, independent of their culture or background, touch their faces up to 800 times per day. No other part of the body is touched as often as the face. Forehead, nose, and chin—the so‐called T‐zone of the face—are touched particularly frequently during spontaneous facial self‐touches (sFST). It is hypothesized that there is a relationship between the density of mechanoreceptors (inferred from facial hair distribution) and the frequency of spontaneous self‐touching. In order to indirectly measure the density of mechanoreceptors (cutaneous end organ complexes), the number of vellus and terminal hairs at 40 different measuring points on the face of 30 (15f/15m) healthy volunteers in study A is determined. In study B, the frequency of sFST at the same 40 measuring points in 66 (32f/34m) healthy persons is determined. Study A reveals that the number of facial hairs—in both sexes—is higher in the T‐zone than in other areas of the face. Study B reveals that the T‐zone is touched more frequently than other areas of the face. Skin areas of the face with a higher number of vellus hairs (and presumably higher innervation density) are touched particularly frequently during sFST.
All‐Paper‐Based, Flexible, and Bio‐Degradable Pressure Sensor with High Moisture Tolerance and Breathability Through Conformally Surface Coating
Authors: Li Ao , Xu Jun , Zhou Shengtao , Zhang Zhaohui , Cao Daxian , Wang Bin , Gao Wenhua , Zhang Wei , Zhang Fengshan 
Published: October 2024

AbstractHighlighted with bio‐degradability, paper‐based flexible pressure sensors receive significant attention in the field of wearable devices for a sustainable future. However, it remains a challenge to possess considerable sensing performance in high humidity and underwater environments, because its structure rapidly breaks down after the hydrophilic cellulose absorbs water. In this study, a facile chemical vapor deposition method is employed to conformally coat a thin hydrophobic layer onto the cellulose fibers, resulting in an encapsulating paper with high moisture tolerance. The well‐maintained porous structure reserves the superior breathability of the paper. A micro‐convex‐structured sensor layer impregnated with MXene serves as the sensing layer. As a result, an all‐paper‐based pressure sensor with high moisture tolerance and breathability is fabricated. This sensor features a broad sensing range (0–60 kPa), acceptable sensitivities (39.58 kPa−1 (0–1.01 kPa), 11.95 kPa−1 (1.01–60 kPa)), a low detection limit of ≈2.8 Pa, response and recovery time (93 and 69 ms), reliable hydrophobic breathability, and excellent repeatability (10 000 cycles). Moreover, this sensor can be safely worn on human skin and can monitor physiological signals in real‐time in different environments (including air, humid environments, and even underwater), providing a reliable, economical, and environmentally friendly solution for wearable technology.
Flexible Triboelectric Sensor based on Catalyst‐Diffusion Self‐Encapsulated Conductive Liquid‐Metal‐Silicone Ink for Somatosensory Soft Robotic System
Authors: Xian Shuai , Xu Yong , Li Yixin , Wu Zhenfeng , Xie Xing , Wu Zhigang , Yang Xiya , Zhong Yong 
Published: October 2024

AbstractThe combination of fluidity and metallic conductivity has attracted considerable attention to liquid metal (LM), but its development remains challenging due to enormous surface tension. Here, vinyl‐terminated silicone oil and platinum catalyst are added to LM to reduce its surface tension, which develops a special type of liquid‐metal‐silicone (LMS) ink with a catalyst diffusion effect. Combined with an embedded three‐dimentional (3D) printing method, the LMS ink is printed on the support matrix, and the catalyst diffuses outward along the print path to cure the silicone around it, directly constructing self‐encapsulated conductive composites with excellent conductivity and self‐encapsulated flexible tactile sensors based on triboelectric nanogenerator (TENG). The sensor exhibits excellent sensitivity (0.308 V kPa−1), high linearity (≈0.99), and good durability (over 10 000 cycles). Furthermore, when used in flexible wearable electronics, the sensor demonstrates a good performance with an accuracy of ≈96% in classifying different human postures using a convolutional neural network. Finally, through embedded 3D printing with LMS ink and silicone ink, a somatosensory soft robotic gripper with complex cavity structures is designed and manufactured in one step, achieving the all‐in‐one integration of sensors and actuators. This study shows great application potential in flexible electronics and soft robotic systems.
Vertically‐Aligned GaS Nanosheets‐Based Photoelectrochemical Photodetector for Fast‐Speed, High‐Sensitivity, and Self‐Powered UV–vis Underwater Optical Communication
Authors: Liu Jinhong , Zhou Yixuan , Shao Panpan , Ma Nan , Jia Le , Wang Yijie , Zhao Hongze , Lu Chunhui , Xu Xinlong 
Published: October 2024

AbstractUnderwater optical communication (UOC) based on the novel photoelectrochemical (PEC) type photodetector has garnered substantial interest in the field of marine resource exploration and ocean investigation due to its strong operability, self‐powered capability, and large sensitive area in harsh underwater environments. To achieve high sensitivity, fast transmission speed, and broadband response characteristics, vertical‐GaS nanosheets‐based PEC photodetectors are prepared by chemical vapor deposition for UOC application. The GaS based PEC photodetector exhibits excellent self‐powered photodetection and a broad UV–vis photoresponse range as well as high stability performance in both Na2SO4 electrolyte and seawater. Notably, it also demonstrates an exceptional photoresponsivity of 11 mA W−1 coupled with a fast response and recovery time of 12.9 and 13 µs which are superior to those of 2D layered materials and conventional wide‐bandgap semiconductors. These improvements are mainly due to the large surface area, short diffusion length, as well as high carrier mobility of vertically‐oriented GaS nanosheets. Strikingly, the constructed GaS photodetector showcases a broad bandwidth exceeding the −3 dB cutoff frequency of 55.3 kHz during UOC testing, successfully enabling transmission and decoding of character information. This work establishes the groundwork for developing high‐performance, self‐powered UV–vis photodetectors adaptable to UOC using PEC technology.
Multiplexed Piezoelectric Electronic Skin with Haptic Feedback for Upper Limb Prosthesis
Authors: Awais Muhammad , AliAbbasi Easa , Atik Abdulkadir Yasin , Bathaei Mohammad Javad , Ali Mohsin , Das Ritu , Dag Cagdas , Ullah Azmat , Singh Rahul , Turker Kemal Sitki , Basdogan Cagatay , Beker Levent 
Published: October 2024

AbstractUpper limb amputation severely impairs tactile perception, limiting daily activities. Developing a near‐natural replacement with prosthetic devices requires improving user sensory experiences during object interactions. The ideal upper limb prosthesis should provide real‐time sensory feedback, mirroring natural experiences. Current prostheses struggle with providing adequate tactile feedback due to sensory limitations. Inspired by the sensory properties of skin, we present a micro‐fabricated, multiplexed electronic skin (e‐skin) with actuators for sensory feedback in upper limb amputation. The piezoelectric‐capacitive sensor array detects static pressure, temperature, vibration, and texture, with integrated actuators stimulating the skin to provide real‐time feedback. The sensors integrate with actuators via readout electronics, making the system standalone and easy to use. The flexible, compact sensor array design (two pixels within a 1 cm² footprint) detects a wide range of pressure (0.5–10 kPa), temperature (22–60 °C), vibration (35–100 Hz), and texture (2.5–45 Hz), suitable for daily use. The e‐skin, attached to a prosthetic finger, is tested for feasibility on human volunteers with wrist‐mounted actuators. Statistics are used to quantitatively assess system performance. The integration of multiplexed sensors and actuators enhances tactile feedback, improving the quality of life for people with upper limb amputations.
Highly Stable and Efficient N‐I‐P Structured Tin‐Rich Lead‐Tin Halide Perovskite Solar Cells with Blended Hole‐Transporting Materials
Authors: Risqi Andi Muhammad , Hu Manman , Chen Liang , Park Byung‐wook , Park Jaewang , Kim Jongbeom , Yang Zuobao , Seok Sang Il 
Published: October 2024

AbstractMixed lead‐tinv halide (LTH) perovskite solar cells (LTH‐PSCs) can reduce the toxicity concerns of full lead‐based PSCs and potentially optimize the bandgap to maximize efficiency. However, commonly used hole‐transporting material (HTM) 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenyl‐amine)9,9′‐spirobifluorene (Spiro‐OMeTAD) with additional dopants Li‐bis(trifluoromethanesulfonyl) imide (Li‐TFSI) and 4‐tert‐butylpyridine (t‐BP) deteriorate oxidation Sn2+ to Sn4+ leading to trap formation. Here, the study introduces a novelty Sn‐friendly HTM for Sn‐rich LTH‐PSCs, combining Spiro‐OMeTAD with 4‐Isopropyl‐4′‐methyldiphenyliodonium tetrakis(pentafluorophenyl)borate (dpi‐TPFB) as a dopant and blended with poly(3‐hexylthiophene‐2,3‐diyl) (P3HT). This blended HTM avoids the harmful effects of Li‐TFSI and t‐BP dopants and leverages the beneficial hydrophobic properties of P3HT, which predominantly resides on the surface with a face‐on orientation. This arrangement not only enhances charge transport and extraction but also improves device stability by protecting the perovskite from environmental factors. Optimizing the P3HT concentration of blended HTM achieved a PCE of 17.27%, the highest reported for n‐i‐p structured Sn‐rich mixed LTH‐PSCs. This HTM also significantly improved device stability, maintaining over 90% of the initial PCE after 3000 h of storage and 80% under maximum power point tracking (MPPT) for 550 h in the air.
Conjugate Addition of 3‐Aryl Oxindoles to In Situ Generated o–Quinone Methides Without Essential Electronic or Steric Groups
Authors: Song Liu 
Published: October 2024

AbstractHerein an efficient method for in situ generated o–quinone methides without essential electronic or steric groups at the exocyclic methylene or on six‐membered ring was established. The method relies on acetylation of salicylylols and subsequently base promoted 1,4‐elimination. The in situ generated o–quinone methides could be undergoing conjugate addition with 3‐aryl oxindoles in one‐pot reaction system, which provided 3,3‐disubstituted oxindoles bearing a quaternary stereocenter in good yields (up to 99 %).
Fabrication of Hierarchical Nanostructures Featuring Amplified Asymmetry Through Co‐Assembly of Liquid Crystalline Block Copolymer and Chiral Amphiphiles
Authors: Lu Yue , Ren Yangge , Gao Juanjuan , Cai Tiantian , Liu Linyuan , Ding Yi , Xie Qingbin , Jia Lin 
Published: October 2024

AbstractThe widespread presence of hierarchical asymmetric structures in nature has sparked considerable interest because of their unique functionalities. These ingenious structures across multiple scales often emerge from the transfer and amplification of asymmetry from chiral molecules under various synergistic effects. However, constructing artificial chiral asymmetric structures, particularly in developing hierarchical multicomponent structures analogous to those formed in nature through synergistic non‐covalent interactions, still presents tremendous challenges. Herein, we propose a co‐assembly strategy to fabricate hierarchical chiral mesostructures by combining a liquid crystalline block copolymer (LC‐BCP) with a small molecular amphiphile containing chiral alanine or phenylalanine as a linker. Through a classic solvent‐exchange process, chiral amphiphiles embedded within LC‐BCP finely regulate the LC ordering effect and facilitate transfer and amplification of asymmetry. Consequently, various co‐assembled structures with significant hierarchical chirality features are obtained through synergetic effects. Remarkably, subtle alterations to the side groups of amino acids in the amphiphiles effectively adjust the hierarchical morphology transition. Moreover, the covalent bonding sequence of amino acids in the amphiphiles emerges as a critical factor governing the formation of hierarchical nanofibers and multilayered vesicles exhibiting a superhelical sense.
Suppressing Energy Migration via Antiparallel Spin Alignment in One‐Dimensional Mn2+ Halide Magnets with High Luminescence Efficiency
Authors: Zhu Xinglu , Yan Xiaohui , Kang Enze , Han Yibo , Yin Congling , Ye Shi 
Published: October 2024

AbstractPhotoexcited energy migration is prone to causing luminescence quenching in Mn2+ luminescent materials, presenting a formidable challenge for optoelectronic applications. Although various strategies and mechanisms have been proposed to mitigate this issue, the role of spin alignment between adjacent Mn2+ ions has remained largely unexamined. In this study, we have elucidated the influence of spin alignment on energy migration within the one‐dimensional Mn2+‐metal halide compound (CH3)4NMnCl3 (TMMC) through variable‐temperature photoluminescence (PL) and magnetic‐optical spectroscopy. This investigation was conducted with reference to (CH6N3)2MnCl4 (GUA) with isolated [Mn3Cl12]6− trimers and Cd2+‐doped TMMC. The spin order in TMMC below approximately 55 K is demonstrated by the disorder‐order transition observed in the temperature‐dependent magnetic susceptibility. This finding is further corroborated by the negligible shift in the temperature‐ and field‐dependent emission peaks, a consequence of magnetic saturation. Our results indicate that the antiparallel spin alignment along the Mn2+ chain in TMMC effectively suppresses energy migration and multiphonon relaxation, thereby reducing nonradiative transitions and enhancing the photoluminescence quantum yield (PLQY). This research casts new light on the potential for developing high‐performance Mn2+‐doped phosphors for optoelectronic and spin‐photonic applications, offering insights into the manipulation of spin and energy dynamics in these materials.
Robustness of linear time‐invariant systems with feedback control protocols under random disturbances
Authors: Wen Shifan , Zhang Wanpeng , Fang Wenxiang 
Published: October 2024

AbstractIn this paper, the robustness of global exponentially stable (ES) linear time‐invariant (LTI) systems with feedback control protocols is examined under the influence of random disturbances (RDs). For a given LTI system with global ES, a state feedback (SF) control protocol and a output feedback (OF) control protocol are proposed to keep the robustness of the discussed system, respectively. Meanwhile, how much the intensity of RDs that LTI system can withstand is obtained by the transcendental equation, in which the feedback gains are also designed and calculated by a proposed iterative algorithm. The theoretical analysis results demonstrate that the perturbed LTI systems may remain ES when the RDs are smaller than the upper bounds obtained in this paper. Finally, three cases are proposed to illustrate the effectiveness of the theoretical research.
The hanging‐heart chip: A portable microfluidic device for high‐throughput generation of contractile embryonic stem cell‐derived cardiac spheroids
Authors: Lai Pei‐Tzu , He Cheng‐Kun , Li Chi‐Han , Matahum Jefunnie , Tang Chia‐Yu , Hsu Chia‐Hsien 
Published: October 2024

AbstractStem cell‐derived cardiac spheroids are promising models for cardiac research and drug testing. However, generating contracting cardiac spheroids remains challenging because of the laborious experimental procedure. Here, we present a microfluidic hanging‐heart chip (HH‐chip) that uses a microchannel and flow‐driven system to facilitate cell loading and culture medium replacement operations to reduce the laborious manual handling involved in the generation of a large quantity of cardiac spheroids. The effectiveness of the HH‐chip was demonstrated by simultaneously forming 50 mouse embryonic stem cell‐derived embryonic bodies, which sequentially differentiated into 90% beating cardiac spheroids within 15 days of culture on the chip. A comparison of our HH‐chip method with traditional hanging‐drop and low‐attachment plate methods revealed that the HH‐chip could generate higher contracting proportions of cardiac spheroids with higher expression of cardiac markers. Additionally, we verified that the contraction frequencies of the cardiac spheroids generated from the HH‐chip were sensitive to cardiotoxic drugs. Overall, our results suggest that the microfluidic hanging drop chip‐based approach is a high‐throughput and highly efficient method for generating contracting mouse embryonic stem cell‐derived cardiac spheroids for cardiac toxicity and drug testing applications.