bluuebunny/crossref_metadata_2025 huggingface dataset:
Elevated lipoprotein(a) and genetic polymorphisms in the LPA gene may predict cardiovascular events
Authors: Gu Jun-Xu , Huang Juan , Li Shan-Shan , Zhou Li-Hua , Yang Ming , Li Yang , Zhang Ai-Min , Yin Yue , Zhang Na , Jia Mei , Su Ming
Published: March 2022

Elevated lipoprotein(a) [Lp(a)] is a risk factor for coronary heart disease (CHD), but there are few studies on the prediction of future cardiovascular events by Lp(a) and its LPA single nucleotide polymorphisms (SNPs). The aim of this study was to investigate whether elevated Lp(a) and its SNPs can predict cardiovascular events. We evaluated whether Lp(a) and LPA SNPs rs6415084 and rs12194138 were associated with the incidence rate and severity of CHD. All participants were followed up for 5 years. Elevated Lp(a) is an independent risk factor for the risk and severity of CHD (CHD group vs. control group: OR = 1.793, 95% CI: 1.053–2.882, p = 0.043; multiple-vessel disease group vs. single-vessel disease group: OR = 1.941, 95% CI: 1.113–3.242, p = 0.027; high GS group vs. low GS group: OR = 2.641, 95% CI: 1.102–7.436, p = 0.040). Both LPA SNPs were risk factors for CHD, and were positively associated with the severity of CHD (LPA SNPs rs6415084: CHD group vs. control group: OR = 1.577, 95% CI: 1.105–1.989, p = 0.004; multiple-vessel disease group vs. single-vessel disease group: OR = 1.613, 95% CI: 1.076–2.641, p = 0.030; high GS group vs. low GS group: OR = 1.580, 95% CI: 1.088–2.429, p = 0.024; LPA SNPs rs12194138: CHD group vs. control group: OR = 1.475, 95% CI: 1.040–3.002, p = 0.035; multiple-vessel disease group vs. single-vessel disease group: OR = 2.274, 95% CI: 1.060–5.148, p = 0.038; high GS group vs. low GS group: OR = 2.067, 95% CI: 1.101–4.647, p = 0.021). After 5 years of follow-up, elevated Lp(a) and LPA SNPs rs6415084 and rs12194138 can independently predict cardiovascular events. The increase of serum Lp(a) and LPA SNPs rs6415084 and rs12194138 are associated with increased prevalence and severity of CHD, and can independently predict cardiovascular events.
Inflammation and nutrition based screening tests for detection of infection in cases of rapid hip destruction
Authors: Abe Koki , Choe Hyonmin , Oba Masatoshi , Tezuka Taro , Ike Hiroyuki , Kobayashi Naomi , Inaba Yutaka
Published: March 2022

Preoperative diagnosis of infection is important for appropriate surgical treatment of patients with rapid hip destruction (RHD). We investigated whether test results, including inflammatory and nutritional markers, could be used to accurately differentiate infectious and non-infectious RHD. Fifty patients with RHD who underwent total hip arthroplasty within a year of onset were observed. Infectious RHD was defined as ≥ 2 positive serological inflammatory, microbiological, or pathological evaluations. The albumin to globulin ratio (AGR), C-reactive protein (CRP)/albumin ratio (CAR), Glasgow prognostic score (GPS), modified GPS (mGPS), prognostic nutritional index (PNI), geriatric nutritional risk index (GNRI), and platelet to lymphocyte ratio (PLR) were calculated from the blood test results. In the infectious group, the white blood cell count, platelet count, CRP level, erythrocyte sedimentation rate, CAR, GPS, mGPS, and PLR were significantly higher, while the albumin level, AGR, PNI, and GNRI were significantly lower. The CRP and albumin levels showed the highest sensitivity (1.00 for both; specificity of 0.87 and 0.73, respectively) in diagnosing infectious RHD. Combining these measurements (CAR) increased the specificity to 0.92. The accuracy of other nutritional assessments was good. Thus, nutritional assessment as well as conventional assessment of the inflammatory response can improve the accuracy of preoperative diagnosis of infectious RHD.
Clinical evaluation of ocular biometry of dual Scheimpflug analyzer, GALILEI G6 and swept source optical coherence tomography, ANTERION
Authors: Wanichwecharungruang Boonsong , Amornpetchsathaporn Anyarak , Kongsomboon Kittipong , Wongwijitsook Wisakorn , Annopawong Kornkamol , Chantra Somporn
Published: March 2022

To evaluate the performance of a new swept source optical coherence tomography optical biometer, ANTERION, in ocular biometry and intraocular lens (IOL) calculation compared with the reference standard of Dual Scheimpflug Analyzer (GALILEI, G6). A prospective comparative study was conducted in a tertiary eye center. Cataract patients were scanned with both devices in a random fashion, and parameters from the devices were analyzed in terms of mean difference and intraclass correlation coefficient (ICC). Bland–Altman plots were performed to compare agreement between the devices. Ninety-six eyes from 96 patients were enrolled for evaluation. With the exception of ACD, all parameters were significantly different, but excellent agreement was revealed for all of them. The mean difference in axial length was 0.03 mm, and ICC was 0.999. Calculated IOL power with Barrett formula revealed that 93.75% were within 1 diopter and the prediction error was 0.03 diopter. Biometry of the devices were arithmetically different. However, the mean difference of the key factors in IOL calculation were small and appeared to be negligible for the purposes of clinical application. The performance of ANTERION was comparable to that of G6 in biometric measurement and IOL calculation; however, the devices cannot be used interchangeably.
Antibody response to oral biofilm is a biomarker for acute coronary syndrome in periodontal disease
Authors: Jaago Mariliis , Pupina Nadežda , Rähni Annika , Pihlak Arno , Sadam Helle , Vrana Nihal Engin , Sinisalo Juha , Pussinen Pirkko , Palm Kaia
Published: March 2022

Cumulative evidence over the last decades have supported the role of gum infections as a risk for future major cardiovascular events. The precise mechanism connecting coronary artery disease (CAD) with periodontal findings has remained elusive. Here, we employ next generation phage display mimotope-variation analysis (MVA) to identify the features of dysfunctional immune system that associate CAD with periodontitis. We identify a fine molecular description of the antigenic epitope repertoires of CAD and its most severe form - acute coronary syndrome (ACS) by profiling the antibody reactivity in a patient cohort with invasive heart examination and complete clinical oral assessment. Specifically, we identify a strong immune response to an EBV VP26 epitope mimicking multiple antigens of oral biofilm as a biomarker for the no-CAD group. With a 2-step biomarker test, we stratify subjects with periodontitis from healthy controls (balanced accuracy 84%), and then assess the risk for ACS with sensitivity 71–89% and specificity 67–100%, depending on the oral health status. Our findings highlight the importance of resolving the immune mechanisms related to severe heart conditions such as ACS in the background of oral health. Prospective validation of these findings will support incorporation of these non-invasive biomarkers into clinical practice.
Seascapes of fear and competition shape regional seabird movement ecology
Authors: Courbin Nicolas , Pichegru Lorien , Seakamela Mduduzi , Makhado Azwianewi , Meÿer Michael , Kotze Pieter G. H. , Mc Cue Steven A. , Péron Clara , Grémillet David
Published: March 2022

Fear effects of predators on prey distributions are seldom considered in marine environments, especially over large spatial scales and in conservation contexts. To fill these major gaps, we tested the Seascape of Fear Hypothesis in the Benguela marine ecosystem off South Africa. Using electronic tracking data, we showed that Cape gannets and their predator, the Cape fur seal, co-occurred in daytime and competed with fisheries within coastal areas. At night, gannets are particularly vulnerable to seals, and 28% of the birds returned to the safety of their breeding colony. The remaining 72% slept at the sea surface, but shifted to offshore areas with lower seal attendance, reducing predation risk by 25%. Overall, our integrative study demonstrates how fear and competition shape the seascape of threatened Cape gannets within a marine environment perturbed by climate change and overfishing. Such knowledge has strong implications for the design of marine protected areas.
Determination of 3-monoiodotyrosine and 3,5-diiodotyrosine in newborn urine and dried urine spots by isotope dilution tandem mass spectrometry
Authors: Carcelén Jesús Nicolás , Marchante-Gayón Juan Manuel , Rodríguez-González Pablo , Ballesteros Alfredo , González José M. , Cocho de Juan José Ángel , García Alonso José Ignacio
Published: March 2022

Development of an analytical method for the determination of MIT and DIT in newborn urine and dried urine spots by Liquid Chromatography Isotope Dilution Tandem Mass Spectrometry capable of correcting analyte interconversion during sample preparation.
Chirality-directed hydrogel assembly and interactions with enantiomers of an active pharmaceutical ingredient
Authors: Patterson Anna K. , El-Qarra Lamisse H. , Smith David K.
Published: March 2022

Enantiomers of the low-molecular-weight gelator (LMWG) DBS-CONHNH2, based on d- or l- 1,3:2,4-dibenzylidenesorbitol (DBS), form weaker gels when mixed, and encapsulate enantiomers of naproxen with a chiral preference.
Controlled synthesis and structural modulation to boost intrinsic photocatalytic activity of BiVO4
Authors: Patil Santosh S. , Lee Jaewon , Kim Taewon , Nagappagari Lakshmana Reddy , Lee Kiyoung
Published: March 2022

A feasible solution-processed surface modification is presented to boost the intrinsic photoactivity of BiVO4via hydrothermal, solvothermal and solid-state reactions, enabling as a promising photocatalyst for degradation of dye pollutants in water.
Effect of trace elements in the toxicity of copper to Chlamydomonas reinhardtii
Authors: Chen Hui , Shen Xin , Ying Yiping , Li Xiang , Chen Lili , Shen Chensi , Wen Yuezhong
Published: March 2022

The cell walls of microalgae have an impact on the toxic effects of Cu. The addition of Cu increased the accumulation of Fe Mn, and Zn by both cell types.
Distinct cellulose nanofibrils generated for improved Pickering emulsions and lignocellulose-degradation enzyme secretion coupled with high bioethanol production in natural rice mutants
Authors: Peng Hao , Zhao Wenyue , Liu Jingyuan , Liu Peng , Yu Haizhong , Deng Jun , Yang Qiaomei , Zhang Ran , Hu Zhen , Liu Shilin , Sun Dan , Peng Liangcai , Wang Yanting
Published: March 2022

Distinct cellulose nanofibrils generated for improved Pickering emulsions stabilization and mixed-cellulases induction coupled with high bioethanol production in natural rice mutant.
HP(O)Ph2/H2O-promoted hydrodefluorination of trifluoromethyl alkenes
Authors: Chu Xue-Qiang , Sun Li-Wen , Chen Yu-Lan , Chen Jia-Wei , Ying Xuan , Ma Mengtao , Shen Zhi-Liang
Published: March 2022

An efficient transition-metal-free hydrodefluorination reaction of trifluoromethyl alkenes for accessing gem-difluoroalkenes is developed. It was surprising to find that the phosphoryl anion is able to mediate the defluorination.
Three interfaces of the dental implant system and their clinical effects on hard and soft tissues
Authors: Kim Jeong Chan , Lee Min , Yeo In-Sung Luke
Published: March 2022

Comprehension of bone–implant, gingiva–abutment and implant–abutment interfaces is necessary in material development. Mechanical complications of the implant–abutment interface provoke biologic complications of the other two interfaces.
A theoretical approach to investigating the mechanism of action and efficiency of N-heterocyclic olefins as organic catalysts for transesterification reactions
Authors: Pirouzi Fatemeh , Eshghi Hossein , Sabet-Sarvestani Hossein
Published: March 2022

For the first time, it is theoretically proved that carbonyl ester reactions with alcohols can be facilitated by activation of fully-planar NHOs via zwitterionic species.
Performance of graphitic carbon nitride nanosheets derived from liquid and thermal exfoliations towards the electrochemical reduction of nitrobenzene
Authors: Ajith Ajay , John S. Abraham
Published: March 2022

The electrocatalytic activity of graphitic carbon nitride nanosheets prepared via thermal and solvent exfoliation is compared towards nitrobenzene reduction.
Regiodivergent hydroallylation of 1,3-diynes controlled by nickel and palladium catalysts
Authors: Zhang Sheng , Zhang Hao , Zhan Zhuang-Ping
Published: March 2022

A highly efficient hydroallylation reaction of 1,3-diynes with allylborons was developed, with the regioselectivity governed primarily by the appropriate choice of the metal.
1,2-Difunctionalizations of alkynes entailing concomitant C–C and C–N bond-forming carboamination reactions
Authors: Nanda Santosh Kumar , Mallik Rosy
Published: March 2022

The 1,2-difunctionalization of alkynes happening through concomitant C–C and C–N bond formation strategies have provide an unified access to diversely functionalized N-bearing heterocycles.
Highly stable and high-performance MgHPO4 surface-modified Ni-rich cathode materials for advanced lithium ion batteries
Authors: Hwang Do-Young , Kim Hyun-Soo , Lee Seung-Hwan
Published: March 2022

A Ni-rich layered cathode (LiNi0.8Co0.1Mn0.1O2, NCM) is a highly promising cathode material for lithium-ion batteries (LIBs).
A robust eco-compatible microporous iron coordination polymer for CO2 capture
Authors: Benzaqui Marvin , Wahiduzzaman Mohammad , Zhao Heng , Hasan Md Rafiul , Steenhaut Timothy , Saad Ali , Marrot Jérôme , Normand Périne , Grenèche Jean-Marc , Heymans Nicolas , De Weireld Guy , Tissot Antoine , Shepard William , Filinchuk Yaroslav , Hermans Sophie , Carn Florent , Manlankowska Magdalena , Téllez Carlos , Coronas Joaquín , Maurin Guillaume , Steunou Nathalie , Serre Christian
Published: March 2022

A novel and water stable Fe(iii) based porous coordination polymer was discovered. Due to its interesting features for CO2 capture, this material was used as an inorganic filler for the processing of composite membranes in CO2/N2 separation.
Synergetic and persistent harvesting of electricity and potable water from ambient moisture with biohybrid fibrils
Authors: Han Xiao , Zhang Weihua , Che Xinpeng , Long Lifen , Li Mingjie , Li Chaoxu
Published: March 2022

Biohybrid nanofibrils enable the synergetic and persistent harvesting of electricity and potable water from ambient moisture.
Heparinized anticoagulant coatings based on polyphenol-amine inspired chemistry for blood-contacting catheters
Authors: Zhang Yuning , Zhang Lujiao , Duan Shun , Hu Yang , Ding Xiaokang , Zhang Yaocheng , Li Yang , Wu Yongzhen , Ding Xuejia , Xu Fu-Jian
Published: March 2022

We offered a strategy for constructing a polyphenol-amine coating with TA and lysine for efficient heparin immobilization. The coated substrates showed good anticoagulant properties and biocompatibility.
A novel hydrophilic MOFs-303-functionalized magnetic probe for the highly efficient analysis of N-linked glycopeptides
Authors: Wang Jiaxi , Wang Xinmei , Li Jie , Xia Yan , Gao Mingxia , Zhang Xiangmin , Huang Li-Hao
Published: March 2022

A novel MOFs-303-functionalized magnetic probe with strong hydrophilicity was synthesized for the highly efficient analysis of N-linked glycopeptides and the discovery of potential biomarkers with hepatocellular carcinoma.
Antiferroelectric-to-ferroelectric phase transition in hexagonal rare-earth iron oxides
Authors: Chen Binjie , Hasegawa Tetsuya , Ohta Hiromichi , Katayama Tsukasa
Published: March 2022

The AFE–FE phase transition was demonstrated in h-DyFeO3 films with the lattice parameter c/a ratio of 1.90–1.92, which is intermediate between those of previously reported AFE and FE h-RFeO3.
Organocatalytic inverse-electron-demand Diels–Alder reaction between 5-alkenyl thiazolones and β,γ-unsaturated carbonyl compounds
Authors: Yang Kai-Xuan , Ji Dong-Sheng , Zheng Haixue , Gu Yucheng , Xu Peng-Fei
Published: March 2022

An inverse-electron-demand oxa-Diels–Alder reaction of 5-alkenyl thiazolones with β,γ-unsaturated carbonyl compounds enabled by quinine thiourea was studied, which allows the enantioselective synthesis of a broad range of highly functionalized pyranthiazoles bearing three continuous stereocenters.
A non-natural biosynthesis pathway toward 2-methylisoborneol
Authors: Gu Binbin , Dickschat Jeroen S.
Published: March 2022

The biosynthesis of 2-methylisoborneol was reconstituted by elongation of dimethylallyl diphosphate (DMAPP) with (S)- and (R)-2-methylisopentenyl diphosphate (2-Me-IPP) using farnesyl diphosphate synthase (FPPS), followed by terpene cyclisation.
Bringing out the potential of organoboron compounds by designing the chemical bonds and spaces around boron
Authors: Shoji Yoshiaki , Kashida Junki , Fukushima Takanori
Published: March 2022

This feature article highlights our recent study on new organoboron compounds and boron-mediated reactions, developed based on the concept of vacant boron p-orbital engineering in combination with peripheral space design for boron.
Effect of the sulfur termination on the properties of Hf2CO2MXene
Authors: Ougherb Chewki , Ouahrani Tarik , Badawi Michael , Morales-García Ángel
Published: March 2022

This computational study investigate the effect of surface termination on HfC MXene by substituting the O-terminated layer with S atoms and its implications on the electronic properties.
Influence of second-order saddles on reaction mechanisms
Authors: Yadav Komal , Pradhan Renuka , Lourderaj Upakarasamy
Published: March 2022

We investigated the role of second-order saddle points on the dynamics of the thermal denitrogenation of 1-pyrazoline usingab initioclassical trajectory simulations at the CASSCF(4,4)/6-31+G* level of theory.
One-pot synthesis to prepare lignin/photoacid nanohybrids for multifunctional biosensors and photo-triggered singlet oxygen generation
Authors: TSE Ho-Yin , Yeung Chi Shun , Lau Chun Yin , Cheung Man Yee , Guan Jianyu , Islam Md Khairul , Anastas Paul T. , Leu Shao-Yuan
Published: March 2022

This study presents a one-pot synthesis approach for a sustainable lignin/photoacid nanohybrid multifunctional biosensor (AL-Por-PP) for fluorescent live cell imaging, bisulfite detection and photo-trigger singlet oxygen generation.
Correction: A novel PVDF hybrid membrane with excellent active–passive integrated antifouling and antibacterial properties based on a PDA guiding effect
Authors: Ni Xing-Xing , Li Jian-Hua , Yu Lu-Ping
Published: March 2022

Correction for ‘A novel PVDF hybrid membrane with excellent active–passive integrated antifouling and antibacterial properties based on a PDA guiding effect’ by Xing-Xing Ni et al., Mater. Adv., 2021, 2, 3300–3314, DOI: 10.1039/D1MA00058F.
Morphology induced enhanced photoconductivity of a phthalocyanine-based benzimidazole linked two-dimensional conjugated covalent organic polymer
Authors: Duygulu Ercan , Alev Onur , Chumakov Yurii , Öztürk Zafer Ziya , Ayhan Mehmet Menaf , Yuksel Fatma
Published: March 2022

A novel phthalocyanine-based benzimidazole linked conjugated covalent organic polymer (NiPc-COP1) has been synthesized with multiple randomly ordered crystalline morphologies.
Strong absorber vs. strong emitter in extended π-conjugated systems: a carbo-benzene – benzothiadiazole chromophore
Authors: Loaeza Luis , Maraval Valérie , Saquet Alix , Ramos-Ortiz Gabriel , Chauvin Remi , Farfán Norberto
Published: March 2022

In the search for photoluminescent carbo-benzenes, with the view to measuring the two-photon absorption cross-section by the TPEF method, thienylbenzothiadiazole groups are envisaged as intrinsic fluorophoric substituents through acetylenic linkers.
Chemically-informed data-driven optimization (ChIDDO): leveraging physical models and Bayesian learning to accelerate chemical research
Authors: Frey Daniel , Shin Ju Hee , Musco Christopher , Modestino Miguel A.
Published: March 2022

A method combining information from both experiments and physics-based models is used to improve experimental Bayesian optimization.
Low-temperature Li–S battery enabled by CoFe bimetallic catalysts
Authors: Gao Ning , Zhang Yujiao , Chen Chong , Li Bao , Li Wenbiao , Lu Huiqiang , Yu Le , Zheng Shumin , Wang Bao
Published: March 2022

Carbon nanofibers embedded with CoFe@C nanoparticles are fabricated through a thermal decomposition method as a host for Li-S battery. The obtained Li2S6/CoFe@C@CNF cathode shows good rate performance and stability at both room and low temperatures.
Fuel cell‐based topologies and multi‐input DC–DC power converters for hybrid electric vehicles: A comprehensive review
Authors: Pathak Pawan Kumar , Yadav Anil Kumar , Padmanaban Sanjeevikumar , Alvi P. A. , Kamwa Innocent
Published: March 2022

In the last few decades, the utilization of fuel cells (FCs) in the automotive industry has created much attention due to easy use, modular structure, and higher efficacy. In the future, technological evolutions reveal that FC driven electric vehicles (EVs) will grow at a rapid pace and will become an excellent alternative to conventional vehicles. This paper discusses a detailed topological classification of the FC‐based hybrid electric vehicle (FCHEV). In these FCHEVs, one of the critical elements is the DC–DC power converter unit. The hybridization of FCs with the other power sources requires more converter units that make the system complex. A multi‐input DC–DC power converter is used to connect more than one energy source to reduce the system's complexity and improve the overall system efficacy. In this survey, numerous articles have been considered and examined vividly. An assessment of present and future scenarios of FCs based power source topologies and multi‐input DC–DC power converter topologies used in HEV is presented. This survey provides a deep insight into the topic for the researchers and engineers working in this field.
Microstructure and properties of NiCrBSi coating formed by ultrasonic vibration combined with induction cladding
Authors: Wang Kai , Shi Yongjun , Zhou Xiaoyu , Zhai Changmin , Guo Yankuo , Jiang Jianfeng
Published: March 2022

A new method of ultrasonic vibration combined with induction cladding was used to prepare nickel-based alloy coating on 45 steel to improve the properties of NiCrBSi coating by induction cladding. The temperature field distribution was simulated and analyzed by finite element method, and the optimum process parameters were determined. The transmission mechanism of ultrasonic wave in traditional non-contact ultrasonic vibration composite cladding was revealed. The effects of non-contact and contact ultrasonic vibration on the grain size, element distribution, porosity, and microhardness of the coating were studied. The cross-section of the coating was analyzed by using a scanning electron microscope, energy dispersive spectrometer, and microhardness tester. The results show that the properties of the coating prepared by non-contact ultrasonic vibration combined with induction cladding were not improved because most of the ultrasonic energy was emitted. In contact ultrasonic vibration combined induction cladding, dendrite structure was destroyed, and the coating grains were refined under the action of ultrasonic vibration. The porosity also decreased evidently under the action of ultrasonic cavitation effect. The microhardness of the coating top area been significantly improved in the microhardness test.
Place de l'orthodontiste dans les soins apportés aux patients porteurs de fentes faciales, l'expérience Amiénoise
Authors: Bouallègue Imen , Gbaguidi Cica Carole
Published: March 2022

La prise en charge des patients présentant des séquelles de fentes labio maxillo palatine est pluridisciplinaire et s'étale sur de nombreuses années. Elle nécessite une démarche diagnostique et un plan de traitement individualisé, raisonné et raisonnable où le traitement orthodontique prend une place importante en indiquant les directions des déplacements à réaliser au niveau dentaire et ceux éventuellement à prévoir au niveau squelettique.

C'est riche d'une longue expérience dans la mise en soins de nos patients que le centre de compétences des fentes faciales du CHU d'Amiens a affiné sa démarche clinique et son choix des facteurs décisionnels à prendre en compte selon les différentes situations cliniques afin de pallier le déficit esthétique inhérent à l'importante hypoplasie maxillaire et aux anomalies de nombre et de positions dentaires tout en optimisant la fonction occlusale et en pérennisant les structures parodontales.

L'objectif de cet article est de présenter la prise en charge orthodontique des patients porteurs de fentes dans le centre de compétences des fentes faciales du CHU d'Amiens et le rôle de l'orthodontiste au sein de l'équipe pluridisciplinaire
Traitement de la supraclusion incisive : apport des techniques linguales par verrous individualisés et du « Ribbon-arch »
Authors: Haïm Frédéric
Published: March 2022

La supraclusion, ou recouvrement excessif du secteur incisivo-canin, seule ou en association avec d'autres dysmorphoses représente une malocclusion extrêmement fréquente dans la pratique orthodontique. Ses conséquences peuvent être variables selon sa sévérité. Elle peut altérer le système stomatognathique dans ses trois composantes; dentaire par une abrasion des incisives, parodontale, par une morsure direct du parodonte marginal ou par une contrainte mécanique excessive dans un contexte inflammatoire aggravant l'alvéolyse, neuro-musculaire par une verticalisation des cycles masticatoires pouvant conduire à une contrainte postérieure au niveau des ATM avec un risque de capsulite postérieure ou de luxation antérieure des disques articulaires.
Facteurs de récidive et contention de la supraclusion incisive
Authors: Chabre Claude
Published: March 2022

La supraclusion incisive est souvent citée par les auteurs comme étant la malocclussion la plus récidivante. Les facteurs de récidive sont en rapport avec le type de croissance, l'équilibre musculaire langue/lèvres et la dynamique occlusale.

La contention a pour but d'assurer la stabilité du résultat obtenu à l'issu du traitement actif de la malocclusion. Elle peut s'établir naturellement en fin de traitement si la dynamique occlusale permet à la mandibule d'effectuer de façon habituelle le mouvement d'incision mettant les incisives maxillaires et mandibulaires en bout à bout, seule position qui s'oppose à leur égression. En absence de certitude d'obtenir cette position, le recours à une contention mécanique s'impose. Différents dispositifs de contention peuvent être utilisés mais celui qui nous semble le plus adapté est l'association de fils de contention collés à la mandibule et au maxillaire en lingual des incisives, et des cales rétro-incisives en composite aux maxillaires.
« Lumière et Art » au cœur d’un processus de recherche et création
Authors: Bréchignac Inès , Dupont Hippolyte , Laborier Nestor
Published: March 2022

Issu de la Filière Arts et Sciences de l’Institut d’Optique Graduate School, GAIN scenography est un projet Arts et Sciences qui vise à créer des œuvres lumineuses immersives s’appuyant notamment sur la technologie laser. Grâce aux compétences techniques de ses créateurs, élèves ingénieurs en optique théorique et appliquée, la première œuvre lumineuse du projet a pu voir le jour : Aurora, projection d’un laser réfracté par un système de filtres avec laquelle le public peut interagir via un dispositif de Kinect.
Des nano-plasmas pour la découpe du verre
Authors: Courvoisier François
Published: March 2022

Dans le domaine de l’ablation par laser femtoseconde, une classe particulière de faisceaux a récemment attiré une large attention de la part de la communauté scientifique et industrielle : les faisceaux « non-diffractants ». Leur profil transverse varie très peu lorsqu’ils se propagent et ils se révèlent particulièrement efficaces pour déposer de l'énergie à une échelle nanométrique sur de grandes distances à l'intérieur des matériaux transparents. Ceci permet en particulier la découpe de verre et de saphir à des vitesses pouvant atteindre le mètre par seconde. Ces nano-plasmas à très haut rapport de forme posent des défis scientifiques et ouvrent de nouvelles opportunités.
L’émergence de procédés d’écriture laser 3D dans les technologies silicium
Authors: Grojo David
Published: March 2022

Les lasers femtosecondes sont à la base des technologies d’écriture 3D permettant l'intégration de nombreuses fonctionnalités micro-optiques, fluidiques et mécaniques à l'intérieur des matériaux diélectriques transparents. Cependant, des défis importants restent à relever pour transposer ces technologies dans le silicium et les semiconducteurs avec les nouvelles sources infrarouges intenses. La forte non-linéarité de propagation inhérente aux semi-conducteurs limite intrinsèquement la localisation de l'énergie lumineuse à un niveau en dessous des régimes d’écriture dans les configurations conventionnelles. L’émergence récente de solutions à ce problème ouvre de nouveaux champs d’applications notamment dans la photonique sur silicium.
Écriture laser de materiaux fonctionnels inorganiques preparés par voie sol-gel
Authors: Noel Laurent , Khitous Amine , Kirscher Quentin , Molinaro Céline , Berling Dominique , Soppera Olivier
Published: March 2022

Les matériaux semi-conducteurs ont des propriétés optoélectroniques intéressantes pour de nombreuses applications microélectroniques. Leur introduction sous forme de films minces sur des substrats fragiles, tels que du verre fin, des feuilles de plastique souple ou des pièces imprimées en 3D, permet de créer de nouveaux matériaux intelligents en introduisant des capteurs ou des photodétecteurs. Dans cet article, nous illustrons l’intérêt de nouvelles approches basées sur des technologies laser et une chimie sol-gel pour intégrer des matériaux fonctionnels inorganiques semi-conducteurs ou diélectriques, dans des procédés rapides, agiles, avec des résolutions spatiales aux échelles micro et nanométriques.
Phenotypical Variability of the Internal Acoustic Canal in the Middle Cranial Fossa Surgery
Authors: Al-Fauri Kornieieva Maryna , Kelly Paul , Lee Daniel , Hadidy Azmy
Published: March 2022

Introduction The wide range of anatomical variability of the structures of the middle cranial fossa (MCF) and the lack of reliable surgical landmarks contribute to a high level of complications in the surgical treatment of vestibular schwannomas. We hypothesized that the cranial phenotype influences the shape of the MCF, the orientation of the pyramid of the temporal bone, and the relative topography of the internal acoustic canal (IAC).

Methods The skull base structures were studied on 54 embalmed cadavers and 60 magnetic resonance images of the head and neck by photo modeling, dissection, and three-dimensional analysis techniques. By the value of the cranial index, all specimens were subdivided into dolichocephalic, mesocephalic, and brachycephalic groups for comparison of variables.

Results The length of the superior border of the temporal pyramid (SB), the apex to squama distance, and the width of the MCF all peaked in the brachycephalic group. The value of the angle between the SB and the axis of the acoustic canal varied from 33 to 58 degrees; it peaked in the dolichocephalic group and showed its smaller value in the brachycephalic one. The pyramid to squama angle had reversed distribution and dominated in the brachycephalic group.

Conclusion The cranial phenotype influences the shape of the MCF, temporal pyramid, and IAC. Presented in this article data help specialists operating on the vestibular schwannoma to localize the IAC based on the individual shape of a skull.
Extrapleural Pneumonectomy for Sarcoma of the Lung in a Pediatric Patient
Authors: Schweigert Michael , Almeida Ana B. , Pablik Jessica
Published: March 2022

Pediatric sarcomas are rare entities. Bone sarcomas and rhabdomyosarcoma are most common, whereas primary sarcoma of the lung is extremely uncommon. Pneumonectomy is only very infrequently performed in the pediatric population. We report on a 16-year-old girl with an undifferentiated high-grade pleomorphic sarcoma of the left lung. There was no comorbidity and no history of previous malignant disease. The huge tumor originated from the left lower lobe and had spread to the left pleura. As part of a multimodal approach, she underwent extrapleural pneumonectomy with en bloc resection of the pleura, lung, pericardium, and diaphragm.
Giant Adrenal Pseudocysts: An Enigma for Surgeons
Authors: Parasar Kunal , Mohan Shantam , John Aaron George , Nigam Jitendra , Anand Utpal , Jha Chandan Kumar
Published: March 2022

Adrenal pseudocysts are cystic lesions arising within the adrenal gland enclosed by a fibrous connective tissue wall that lacks lining cells. They can attain a huge size and pose a diagnostic challenge with a broad range of differentials including benign and malignant neoplasms. There are only a few small case series and case reports describing these lesions. We report a series of five patients who presented with “indeterminate” abdominal cystic lesions and were later on found to have adrenal pseudocyst. Four out of five patients presented with non-specific abdominal symptoms, and one patient presented with symptoms suggestive of a functional adrenal tumor. The size of these tumors ranged from 6 to 30 cm. They had variable radiological features and in two cases even a percutaneous biopsy could not establish the diagnosis. In four of these “indeterminate” abdominal masses, an adrenal origin was not suspected preoperatively. Surgical excision provided a resolution of symptoms, ruled out malignancy, and clinched the diagnosis.
Influence of network defects on the conformational structure of nanogel particles: From “closed compact” to “open fractal” nanogel particles
Authors: Chremos Alexandros , Horkay Ferenc , Douglas Jack F.
Published: March 2022

We propose an approach to generate a wide range of randomly branched polymeric structures to gain general insights into how polymer topology encodes a configurational structure in solution. Nanogel particles can take forms ranging from relatively symmetric sponge-like compact structures to relatively anisotropic open fractal structures observed in some nanogel clusters and in some self-associating polymers in solutions, such as aggrecan solutions under physiologically relevant conditions. We hypothesize that this broad “spectrum” of branched polymer structures derives from the degree of regularity of bonding in the network defining these structures. Accordingly, we systematically introduce bonding defects in an initially perfect network having a lattice structure in three and two topological dimensions corresponding to “sponge” and “sheet” structures, respectively. The introduction of bonding defects causes these “closed” and relatively compact nanogel particles to transform near a well-defined bond percolation threshold into “open” fractal objects with the inherent anisotropy of randomly branched polymers. Moreover, with increasing network decimation, the network structure of these polymers acquires other configurational properties similar to those of randomly branched polymers. In particular, the mass scaling of the radius of gyration and its eigenvalues, as well as hydrodynamic radius, intrinsic viscosity, and form factor for scattering, all undergo abrupt changes that accompany these topological transitions. Our findings support the idea that randomly branched polymers can be considered to be equivalent to perforated sheets from a “universality class” standpoint. We utilize our model to gain insight into scattering measurements made on aggrecan solutions.
Estimating covariant Lyapunov vectors from data
Authors: Martin Christoph , Sharafi Nahal , Hallerberg Sarah
Published: March 2022

Covariant Lyapunov vectors characterize the directions along which perturbations in dynamical systems grow. They have also been studied as predictors of critical transitions and extreme events. For many applications, it is necessary to estimate these vectors from data since model equations are unknown for many interesting phenomena. We propose an approach for estimating covariant Lyapunov vectors based on data records without knowing the underlying equations of the system. In contrast to previous approaches, our approach can be applied to high-dimensional datasets. We demonstrate that this purely data-driven approach can accurately estimate covariant Lyapunov vectors from data records generated by several low- and high-dimensional dynamical systems. The highest dimension of a time series from which covariant Lyapunov vectors are estimated in this contribution is 128.
Magnon mode transition in synthetic antiferromagnets induced by perpendicular magnetic anisotropy
Authors: Xiao Xiao , Chen Zhengdong , Dai Changting , Ma Fusheng
Published: March 2022

In this work, we numerically studied the static and dynamic properties of synthetic antiferromagnets (SAFs) with perpendicular magnetic anisotropy (PMA). The observed high/low frequency magnon is either optical/acoustic or left/right-hand mode depending on the strength of PMA, i.e., a PMA-induced magnon mode transition. For weaker PMA, the ground magnetization state of the SAFs is in-plane magnetized exhibiting the optical/acoustic magnon mode with high/low frequency. While for stronger PMA, the ground magnetization state of the SAFs is perpendicularly magnetized and characterized by the presence of the left- and right-hand magnon modes. Furthermore, by tilting the external field toward the SAF film plane, hybridization between the acoustic and the optical magnon modes can be realized and approaches a strong coupling regime by modulating the strength of PMA and the magnitude of interlayer exchange coupling. Our findings provide new insight into the magnetization dynamics in synthetic antiferromagnets with perpendicular magnetic anisotropy for quantum magnonics.
Modeling the saturation of the multipactor effect in a dielectric-loaded parallel-plate waveguide
Authors: Zhai Yonggui , Wang Hongguang , Cao Meng , Weng Ming , Lin Shu , Peng Min , Chen Kun , Wang Rui , Li Yun , Cui Wanzhao , Chen Jun , Li Yongdong
Published: March 2022

The aim of this paper is to establish a numerical simulation model for the multipactor effect in a partially dielectric-loaded parallel-plate waveguide, with a focus on the investigation of multipactor saturation mechanisms for different dielectric materials with different secondary emission yield (SEY) properties. An electrostatic method involving the radio-frequency fields, space charge fields, and the dynamics of charge accumulation on the dielectric surface and solutions for electrostatic fields are proposed. The evolution of the electron number, accumulated charge, and secondary electron multiplication rate for different input voltages and SEY properties of the dielectric materials are studied using numerical calculations. The results show that two physical multipactor phenomena occur in a dielectric-loaded parallel-plate waveguide: a self-sustaining phenomenon, which means that the electron population reaches a saturation level, and a self-extinguishing phenomenon. The latter can be divided into two cases: in one, the number of electrons undergoes a process of multiplication, saturation, and reduction, and in the other, the number of electrons disappears after their population reaches a maximum. Furthermore, a multipactor susceptibility diagram for SEY curves of different dielectric materials is constructed. The results show that the multipactor effect is suppressed when the maximum of the SEY curve is less than 1.3.
Effect of template amounts on the orientation degree and electrical properties of lead-free piezoelectric textured KNN-based ceramics
Authors: Quan Yi , Wang Lingyan , Ren Wei , Zhao Jinyan , Zhuang Jian , Zheng Kun , Wang Zhe , Ren Matthew Xinhu , Karaki Tomoaki , Jiang Zhishui , Wen Li
Published: March 2022

Textured process is considered an effective way to enhance the performance of piezoelectric ceramics. To obtain lead-free piezoelectric KNN-based ceramics with high performance, ⟨001⟩c-textured lead-free piezoelectric 0.915(K0.45Na0.5Li0.05)–0.075BaZrO3–0.01Bi0.5Na0.5TiO3 (KNLN–BZ–BNT) ceramics with the addition of 5 mol. % NaNbO3 templates were prepared, and the improved piezoelectric properties and thermal stability were expectedly achieved. For textured ceramics, the textured degree is one of the very important parameters and strongly depends on the amount of templates. Therefore, in this work, the effect of the amount of templates on the textured degree and electrical properties of ⟨001⟩c-textured KNLN–BZ–BNT ceramics were investigated in detail. It was found that the templates take a positive effect when the template amount is low, in which the textured degree and electrical properties increased with the amount of templates. In contrast, excess templates could induce a severe shift of stoichiometry within the textured ceramics, accompanied by degraded performances. As a result, for the ceramics with template amount less than 4 mol. %, enhanced textured degree and electrical properties were obtained. When the template amount exceeds 5 mol. %, the textured degree and electrical properties become degraded. The textured ceramic with the 4 mol. % template shows the highest textured degree of 93% and the highest piezoelectric constants of d33 = 360 pC/N and d33∗ = 615 pm/V. Combining a vertical morphotropic phase boundary with an appropriate template amount of 4 mol. %, the ceramics exhibit superior thermal stability within the temperature range of 30–200 °C.
A discussion on various experimental methods of impact ionization coefficient measurement in GaN
Authors: Ji Dong , Zeng Ke , Bian Zhengliang , Shankar Bhawani , Gunning Brendan P. , Binder Andrew , Dickerson Jeramy R. , Aktas Ozgur , Anderson Travis J. , Kaplar Robert J. , Chowdhury Srabanti
Published: March 2022

Impact ionization coefficients play a critical role in semiconductors. In addition to silicon, silicon carbide and gallium nitride are important semiconductors that are being seen more as mainstream semiconductor technologies. As a reflection of the maturity of these semiconductors, predictive modeling has become essential to device and circuit designers, and impact ionization coefficients play a key role here. Recently, several studies have measured impact ionization coefficients. We dedicated the first part of our study to comparing three experimental methods to estimate impact ionization coefficients in GaN, which are all based on photomultiplication but feature characteristic differences. The first method inserts an InGaN hole-injection layer, the accuracy of which is challenged by the dominance of ionization in InGaN, leading to possible overestimation of the coefficients. The second method utilizes the Franz–Keldysh effect for hole injection but not for electrons, where the mixed injection of induced carriers would require a margin of error. The third method uses complementary p–n and n–p structures that have been at the basis of this estimation in Si and SiC and leans on the assumption of a constant electric field, and any deviation would require a margin of error. In the second part of our study, we evaluated the models using recent experimental data from diodes demonstrating avalanche breakdown.
On bi-chromatic steady-state gravity waves with an arbitrary included angle
Authors: Yang Xiaoyan , Li Ye
Published: March 2022

Being encouraged by the recent study by Yang et al. [“On collinear steady-state gravity waves with an infinite number of exact resonances,” Phys. Fluids 31, 122109 (2019)] on two primary waves traveling in the same/opposite direction, we investigate two primary waves traveling with an arbitrary included angle by solving the water-wave equations as a nonlinear boundary-value problem. When the included angle is small, there exists an infinite number of nearly resonant wave components corresponding to an infinite number of small denominators in the framework of the classical analytic approximation methods, like perturbation methods. At a certain included angle, it will cause the classical third-order resonance, corresponding to a singularity. Fortunately, based on the homotopy analysis method (HAM), this type of problem can be solved uniformly by choosing a proper auxiliary linear operator with which the small denominators and singularity can be avoided once and for all. Approximate homotopy-series solutions can be obtained for the two primary waves traveling with an arbitrary included angle. The solutions bifurcate at the angle of classical third-order resonance. Regardless of the resonance at the third-order, it is found that when the acute angle between the two primary wave components becomes smaller, the wave energy slowly shifts from the primary wave components to the high-order wave components, and the increase in wave amplitude strengthens this energy transfer. Moreover, when the included angle is close to or smaller than the third-order resonant angle, the third-order quasi-resonant interaction has a greater influence on the energy distribution, especially if the overall amplitude is relatively large. All of this illustrates the validity and potential of the HAM to be applied to rather complicated nonlinear problems that may have an infinite number of singularities or small denominators.
The detection matrix as a model-agnostic tool to estimate the number of degrees of freedom in mechanical systems and engineering structures
Authors: Celli Paolo , Porfiri Maurizio
Published: March 2022

Estimating the number of degrees of freedom of a mechanical system or an engineering structure from the time-series of a small set of sensors is a basic problem in diagnostics, which, however, is often overlooked when monitoring health and integrity. In this work, we demonstrate the applicability of the network-theoretic concept of detection matrix as a tool to solve this problem. From this estimation, we illustrate the possibility to identify damage. The detection matrix, recently introduced by Haehne et al. [Phys. Rev. Lett. 122, 158301 (2019)] in the context of network theory, is assembled from the transient response of a few nodes as a result of non-zero initial conditions: its rank offers an estimate of the number of nodes in the network itself. The use of the detection matrix is completely model-agnostic, whereby it does not require any knowledge of the system dynamics. Here, we show that, with a few modifications, this same principle applies to discrete systems, such as spring-mass lattices and trusses. Moreover, we discuss how damage in one or more members causes the appearance of distinct jumps in the singular values of this matrix, thereby opening the door to structural health monitoring applications, without the need for a complete model reconstruction.
Chlorine dioxide: An exception that proves the rules of localized chemical bonding
Authors: Weinhold Frank
Published: March 2022

We employ natural bond orbital and natural resonance theory tools to analyze the enigmatic properties of the C2v-symmetric isomer of chlorine dioxide radical (ClO2), whose many challenges to Pauling-type localized bonding concepts were recognized by Linus Pauling himself. Although spin-contamination is minimal in this species, ClO2 exhibits an unusually strong form of “different Lewis structures for different spins” bonding pattern, intrinsically outside the framework of “maximal pairing” concepts. We show how the novel spin-unpaired donor–acceptor interactions lead to weakened bonding in the supramolecular domain of polyradical (ClO2)n homoclusters and aqueous ClO2(H2O)n heteroclusters. Despite feeble binding energies and large inter-radical separations, the polyradical clusters are found to maintain coherent spin patterns in each cluster component, attesting to the quantal donor–acceptor nature of their interactions and the cooperative and anticooperative couplings that govern intra- and intermolecular spin distributions in such spin-clusters.