bluuebunny/crossref_metadata_2025 huggingface dataset:
Transcriptome analysis provides insights into the molecular mechanism of GhSAMDC1 involving in rapid vegetative growth and early flowering in tobacco
Authors: Cheng Xinqi , Pang Fangqin , Tian Wengang , Tang Xinxin , Wu Lan , Hu Xiaoming , Zhu Huaguo
Published: August 2022

In previous study, ectopic expression of GhSAMDC1 improved vegetative growth and early flowering in tobacco, which had been explained through changes of polyamine content, polyamines and flowering relate genes expression. To further disclose the transcript changes of ectopic expression of GhSAMDC1 in tobacco, the leaves from wild type and two transgenic lines at seedling (30 days old), bolting (60 days old) and flowering (90 days old) stages were performed for transcriptome analysis. Compared to wild type, a total of 938 differentially expressed genes (DEGs) were found to be up- or down-regulated in the two transgenic plants. GO and KEGG analysis revealed that tobacco of wild-type and transgenic lines were controlled by a complex gene network, which regulated multiple metabolic pathways. Phytohormone detection indicate GhSAMDC1 affect endogenous phytohormone content, ABA and JA content are remarkably increased in transgenic plants. Furthermore, transcript factor analysis indicated 18 transcript factor families, including stress response, development and flowering related transcript factor families, especially AP2-EREBP, WRKY, HSF and Tify are the most over-represented in those transcript factor families. In conclusion, transcriptome analysis provides insights into the molecular mechanism of GhSAMDC1 involving rapid vegetative growth and early flowering in tobacco.
High-efficiency brain-targeted intranasal delivery of BDNF mediated by engineered exosomes to promote remyelination
Authors: Zhai Yuanxin , Wang Quanwei , Zhu Zhanchi , Hao Ying , Han Fang , Hong Jing , Zheng Wenlong , Ma Sancheng , Yang Lingyan , Cheng Guosheng
Published: August 2022

The schematic illustration of the effect of the brain-targeted engineered exosome-mediated BDNF on oligodendrocyte differentiation in vitro and remyelination in vivo through intranasal administration.
Hierarchical large-pore MOFs templated from poly(ethylene oxide)-b-polystyrene diblock copolymer with tuneable pore sizes
Authors: Chen Jingwen , Li Ke , Yang Jian , Gu Jinlou
Published: August 2022

High-molecular-weight diblock copolymer PEO-b-PS was applied for the first time to direct the synthesis of hierarchically porous MOFs with mesopore size ranging from approximately 15 to 23 nm via a salt-in ion-assisted template strategy.
Exfoliation, delamination, and oxidation stability of molten salt etched Nb2CTz MXene nanosheets
Authors: Arole Kailash , Blivin Jackson W. , Bruce Atiana M. , Athavale Swarnima , Echols Ian J. , Cao Huaixuan , Tan Zeyi , Radovic Miladin , Lutkenhaus Jodie L. , Green Micah J.
Published: August 2022

Despite numerous prior reports of molten salt etching of MAX phases, few of these reports achieved water-dispersible MXene nanosheets, and none for Nb-based MXenes.
A red-NIR fluorescent probe for rapid and visual detection of acrolein
Authors: Xu Hai , Zhang Chen , Zhang Yu-Qing , Suo Sheng-Nan , Wang Ya-Wen , Peng Yu
Published: August 2022

A red-NIR turn-on fluorescent probe has been developed for rapid, sensitive and colorimetric detection of toxic acrolein.
Site-selective C–H alkylation of myo-inositol via organic photoredox catalysis
Authors: Cao Haonan , Guo Tianyun , Deng Xuemei , Huo Xing , Tang Shouchu , Liu Jian , Wang Xiaolei
Published: August 2022

Site-selective photoredox reactions with aromatic olefins enable direct alkylation of unprotected myo-inositol at C4.
Methanol as a hydrogen source: room-temperature highly-selective transfer hydrogenation of α,β-unsaturated ketones
Authors: Garg Nidhi , Somasundharam Hari Prasaad , Dahiya Pardeep , Sundararaju Basker
Published: August 2022

A highly chemoselective transfer hydrogenation of α,β-unsaturated ketones was achieved with the Cp*Ir/bipy-diol catalytic system using methanol as a hydrogen surrogate at room temperature.
A predictive journey towards trans-thioamides/amides
Authors: Tomasini Michele , Zhang Jin , Zhao Hui , Besalú Emili , Falivene Laura , Caporaso Lucia , Szostak Michal , Poater Albert
Published: August 2022

The cis–trans isomerization of (thio)amides was studied by DFT calculations to get the model for the higher preference for the cis conformation by guided predictive chemistry, suggesting how to select the substituents that lead to the trans isomer.
First-principles study of lead-free Ge-based 2D Ruddlesden–Popper hybrid perovskites for solar cell applications
Authors: Babaei Maryam , Ahmadi Vahid , Darvish Ghafar
Published: August 2022

Recently, 2D halide perovskites have attracted attention because they are excellent photo absorbing materials for perovskite solar cells.
The effect of particle size and composition on the optical and electronic properties of CdO and CdS rocksalt nanoparticles
Authors: Zwijnenburg Martijn A.
Published: August 2022

Quantum confinement like behaviour in CdO and CdS is demonstrated throughGW–BSE calculations on realistic nanoparticles.
DFT exchange: sharing perspectives on the workhorse of quantum chemistry and materials science
Authors: Teale Andrew M. , Helgaker Trygve , Savin Andreas , Adamo Carlo , Aradi Bálint , Arbuznikov Alexei V. , Ayers Paul W. , Baerends Evert Jan , Barone Vincenzo , Calaminici Patrizia , Cancès Eric , Carter Emily A. , Chattaraj Pratim Kumar , Chermette Henry , Ciofini Ilaria , Crawford T. Daniel , De Proft Frank , Dobson John F. , Draxl Claudia , Frauenheim Thomas , Fromager Emmanuel , Fuentealba Patricio , Gagliardi Laura , Galli Giulia , Gao Jiali , Geerlings Paul , Gidopoulos Nikitas , Gill Peter M. W. , Gori-Giorgi Paola , Görling Andreas , Gould Tim , Grimme Stefan , Gritsenko Oleg , Jensen Hans Jørgen Aagaard , Johnson Erin R. , Jones Robert O. , Kaupp Martin , Köster Andreas M. , Kronik Leeor , Krylov Anna I. , Kvaal Simen , Laestadius Andre , Levy Mel , Lewin Mathieu , Liu Shubin , Loos Pierre-François , Maitra Neepa T. , Neese Frank , Perdew John P. , Pernal Katarzyna , Pernot Pascal , Piecuch Piotr , Rebolini Elisa , Reining Lucia , Romaniello Pina , Ruzsinszky Adrienn , Salahub Dennis R. , Scheffler Matthias , Schwerdtfeger Peter , Staroverov Viktor N. , Sun Jianwei , Tellgren Erik , Tozer David J. , Trickey Samuel B. , Ullrich Carsten A. , Vela Alberto , Vignale Giovanni , Wesolowski Tomasz A. , Xu Xin , Yang Weitao
Published: August 2022

In this paper, the history, present status, and future of density-functional theory (DFT) is informally reviewed and discussed by 70 workers in the field, including molecular scientists, materials scientists, method developers and practitioners.
Probing the nature of Lewis acid sites on oxide surfaces with 31P(CH3)3 NMR: a theoretical analysis
Authors: Maleki Farahnaz , Pacchioni Gianfranco
Published: August 2022

NMR 31P chemical shift can be used to define a scale of Lewis acidity of oxide surfaces.
A new metal complex-templated silver iodobismuthate exhibiting photocurrent response and photocatalytic property
Authors: Zhang Bo , Li Jun , Yang Yan , Wang Wen-Hao , Shen Hong-Yao , Shao Ya-Nan
Published: August 2022

Synthesis, crystal structure, photocurrent response, and photocatalytic property of a new metal complex-templated silver iodobismuthate, namely, [Zn(bipy)3]2Ag2BiI6(I)1.355(I3)1.645 (bipy = 2,2′-bipyridine).
Heterolytic cleavage of a Si–H bond by a metal–ligand cooperation of a cationic iridium amido complex and hydrosilylation of aldehydes
Authors: Iizuka Kosuke , Nakajima Yumiko , Sato Kazuhiko
Published: August 2022

Heterolytic cleavage of a Si–H bond was achieved mediated by a metal–ligand cooperation of a cationic iridium amido complex. The reaction was applied to the catalytic hydrosilylation of benzaldehyde and its derivatives.
Calculating the chemical mechanism of nitrogenase: new working hypotheses
Authors: Dance Ian
Published: August 2022

Additional working hypotheses for the mechanism of the enzyme nitrogenase: the active site uses several binding sites with different mechanistic roles.
Molten-droplet-driven growth of MoS2 flakes with controllable morphology transition for hydrogen evolution reactions
Authors: Yang Shuai , Wu Jing , Wang Chao , Yan Hong , Han Luoqiao , Feng Jianmin , Zhang Bo , Li Dejun , Yu Gui , Luo Birong
Published: August 2022

MoS2 flakes with controllable morphologies are synthesized by a molten-droplet-driven CVD growth strategy based on vapor–liquid–solid mode.
In vitro digestion and fecal fermentation of Siraitia grosvenorii polysaccharide and its impact on human gut microbiota
Authors: Guo Yuxi , Chen Xuefeng , Gong Pin , Wang Mengrao , Yao Wenbo , Yang Wenjuan , Chen Fuxin
Published: August 2022

In this study, the structure of Siraitia grosvenorii polysaccharides (SGPs) changed significantly after digestion.
Hydroxylation and dimerization of para-dihydroxylated aromatic compounds mediated by cold atmospheric-pressure plasma in comparison with chemically catalyzed reactions
Authors: Hahn Veronika , Mikolasch Annett , Schmidt Michael , Neuburger Jan Eric , von Langermann Jan , Lalk Michael , Weltmann Klaus-Dieter , von Woedtke Thomas , Kolb Jürgen
Published: August 2022

Physical plasma as novel possibility for the synthesis of organic substances e.g. hydroxylated dimers.
In situ electrochemical deposition of a bismuth/cerium dioxide/reduced graphene oxide nanofilm for enhanced Pb2+ sensing performance
Authors: Zhao Nan , Lian Huiting , Yu Yaming
Published: August 2022

A Bi/CeO2/rGO/FTO sensing platform was constructed by in situ electrochemical deposition for sensitive detection of Pb2+ with a detection limit of 0.00045 μM.
Continuous flow system for simple preparation of functionalized polymeric beads from poly(acrylamide-thiolactone)
Authors: Valverde David , Porcar Raúl , Prinzi Roberta , Luis Santiago V. , Altava Belén , García-Verdugo Eduardo
Published: August 2022

Going with the flow: continuous flow devices to fabricate functional spherical polymers based on poly(acrylamide-thiolactone).
Electroactive aniline tetramer–spider silks with conductive and electrochromic functionality
Authors: Wan Hung-Yu , Chen Yi-Ting , Li Guan-Ting , Wu Hsuan-Chen , Huang Tsao-Cheng , Yang Ta-I.
Published: August 2022

Spider silk composite fibers with high conductivity and mechanical strength were developed and their color could be controlled by different applied pH values and voltages.
Anti-multiple myeloma potential of resynthesized belinostat derivatives: an experimental study on cytotoxic activity, drug combination, and docking studies
Authors: Nguyen Hong Phuong , Tran Quang De , Nguyen Cuong Quoc , Hoa Tran Phuong , Duy Binh Tran , Nhu Thao Huynh , Hue Bui Thi Buu , Tuan Nguyen Trong , Le Dang Quang , Quoc Chau Thanh Nguyen , Van Ky Nguyen , Pham Minh Quan , Yang Su-Geun
Published: August 2022

Multiple myeloma is a deadly cancer that is a complex and multifactorial disease.
Biosensing bacterial 16S rDNA by microchip electrophoresis combined with a CRISPR system based on real-time crRNA/Cas12a formation
Authors: Luo Feifei , Geng Xing , Li Zhi , Dai Ge , Chu Zhaohui , He Pingang , Zhang Fan , Wang Qingjiang
Published: August 2022

Real-time crRNA/Cas12a formation derived CRISPR system for bacterial sensing.
ZnO–ZnCr2O4 composite prepared by a glycine nitrate process method and applied for hydrogen production by steam reforming of methanol
Authors: Yu Chung-Lun , Sakthinathan Subramanian , Lai Guan-Ting , Lin Chia-Cheng , Chiu Te-Wei , Liu Ming-Che
Published: August 2022

ZnO–ZnCr2O4 composite for hydrogen production by steam reforming of methanol.
Synthesis of a UiO-66/g-C3N4 composite using terephthalic acid obtained from waste plastic for the photocatalytic degradation of the chemical warfare agent simulant, methyl paraoxon
Authors: Van Le Dung , Nguyen Manh B. , Dang Phuong T. , Lee Taeyoon , Nguyen Trinh Duy
Published: August 2022

UiO-66/g-C3N4 with a high surface area (1440 m2 g−1) and a high capillary volume (1.49 cm3 g−1) exhibited highly efficient degradation of dimethyl 4-nitrophenyl phosphate with t1/2 = 2.17 min.
Preparation of sodium silicate/red mud-based ZSM-5 with glucose as a second template for catalytic cracking of waste plastics into useful chemicals
Authors: Wang Xiaofeng , Li Fuwei , Ali Asad , Gu Hengshuo , Fu Hongbing , Li Zhixia , Lin Hongfei
Published: August 2022

ZSM-5 was hydrothermally synthesized in a TPABr–glucose dual-template system with low-cost red mud and industrial sodium silicate. The resultant ZSM-5 showed superior performance in converting plastics to light olefins.
Production of Cardamine violifolia selenium-enriched peptide using immobilized Alcalase on Fe3O4 modified by tannic acid and polyethyleneimine
Authors: Zhu Shiyu , Cong Xin , Sun Zheng , Chen Zhe , Chen Xu , Zhu Zhenzhou , Li Shuyi , Cheng Shuiyuan
Published: August 2022

Preparation of Se-enriched peptides by enzymatic hydrolysis of Se-enriched protein of CV with immobilized Alcalase.
3-(Propylthio)propane-1-sulfonic acid immobilized on functionalized magnetic nanoparticles as an efficient catalyst for one-pot synthesis of dihydrotetrazolo[1,5-a]pyrimidine and tetrahydrotetrazolo[5,1-b]quinazolinone derivatives
Authors: Karimi Fatemeh , Tighsazzadeh Behnaz , Asadi Beheshteh , Mohammadpoor-Baltork Iraj , Layeghi Mahsa , Mirkhani Valiollah , Tangestaninejad Shahram , Moghadam Majid
Published: August 2022

A novel method for the synthesis of dihydrotetrazolo[1,5-a]pyrimidine and tetrahydrotetrazolo[5,1-b]quinazolinone derivatives using [PTPSA@SiO2–Fe3O4] as a green and reusable catalyst under solvent-free conditions is reported.
High electrocatalytic activity of Pt on porous Nb-doped TiO2nanoparticles prepared by aerosol-assisted self-assembly
Authors: Fu Xin , Li Ruisong , Zhang Yucang
Published: August 2022

A niobium-doped titanium dioxide electrocatalyst support for proton-exchange membrane fuel cells was prepared by an aerosol-assisted method and then loaded with platinum nanoparticles in the presence of ethylene glycol as a reducing agent.
Altereporenes A–E, five epoxy octa-hydronaphthalene polyketides produced by an endophytic fungusAlternariasp. YUD20002
Authors: Xia Dan-Dan , Duan Hao-Jie , Xie Fei , Xie Tian-Peng , Zhang Yan , Sun Yue , Lu Jian-Mei , Gao Yu-Hong , Zhou Hao , Ding Zhong-Tao
Published: August 2022

Five previously undescribed epoxy octa-hydronaphthalene polyketides, altereporenes A–E (1–5) were isolated from rice culture of the endophytic fungusAlternariasp. YUD20002 derived from the tubers ofSolanum tuberosum.
Washable and stretchable fiber with heat and ultraviolet color conversion
Authors: Yang Jonguk , Ju Sanghyun
Published: August 2022

Thermochromic- and UV-photochromic-materials embedded stretchable fibers showed stable color conversion functionality in response to temperature and UV irradiation even after continuous tensile-shrinkage, exposure to sweat, and detergent exposure.
Preparation of coated paper reinforced by a blend of anionic-starch-based nanocellulose/chitosan and its properties
Authors: Xue Meigui , Wen Zhou , Huang Ruquan , Chai Xinsheng , Li Wei , Chen Chunxia , Chen Hongqian
Published: August 2022

Carboxylated cellulose nanocrystal whisker (C-CNC) and chitosan (CTS) were used to blend and reinforce anionic starch (AS) to prepare a paper-coating agent, AS-CNC-CTS, which was coated on one side of the surface of offset paper and kraft paper.
Structural evolution, photoelectron spectra and vibrational properties of anionic GdGen− (n = 5–18) nanoalloy clusters: a DFT insight
Authors: Yang Zhaofeng , Rehman Aziz U. , Cao Zhenzhu , Yang Jucai
Published: August 2022

The structural evolution, electronic and vibrational properties of GdGen− (n=5-18) nanoclusters were studied by quantum chemical calculations, which revealed GdGe16− nanocluster is a superatom to the orbital of 1S21P6(4f7)1D101F142S22P21G182P42D10.
Construction of carbon-based flame retardant composite with reinforced and toughened property and its application in polylactic acid
Authors: Xiao Yunchao , Yang Yaru , Luo Qiulan , Tang Bolin , Guan Jipeng , Tian Qiang
Published: August 2022

A CNT-based flame retardant was synthesized and introduced into PLA to simultaneously improve the flame retardancy, strength and toughness of PLA.
Solar-driven interfacial evaporation for water treatment: advanced research progress and challenges
Authors: Li Jiyan , Jing Yanju , Xing Guoyu , Liu Meichen , Cui Yang , Sun Hanxue , Zhu Zhaoqi , Liang Weidong , Li An
Published: August 2022

Solar-driven interface evaporation, with photothermal materials as the core component, has an excellent seawater desalination effect and potential application prospect in the field of water treatment.
Atomistic insights into the morphology of deposited Li
Authors: Tan Jian , Yao Wei , Ye Mingxin , Shen Jianfeng
Published: August 2022

In this perspective, we attempt to understand the morphology of deposited Li at the atomic level and establish the relationship between the morphology of the deposited Li and reversibility of Li plating/stripping.
Ionic liquid-based electroactive materials: a novel approach for cardiac tissue engineering strategies
Authors: Meira R. M. , Correia D. M. , García Díez A. , Lanceros-Mendez S. , Ribeiro C.
Published: August 2022

Cardiac tissue regeneration strategies are increasingly taking advantage of electroactive scaffolds to actively recreate the tissue microenvironment.
A general strategy to immobilize metal nanoparticles on MXene composite fabrics for enhanced sensing performance and endowed multifunctionality
Authors: Yu Qinghua , Pan Junjie , Li Jianna , Su Chuanli , Huang Yaoli , Bi Siyi , Jiang Jinhua , Chen Nanliang
Published: August 2022

A general strategy was developed to enhance the sensing performance of MNWF composites and realize multifunctional applications by introducing metal NPs.
MFNet: Panoptic segmentation network based on multiscale feature weighted fusion and frequency domain attention mechanism
Authors: Lei Haiwei , He Fangyuan , Jia Bohui , Wu Qian
Published: August 2022

Existing panoptic segmentation networks based on multiscale methods do not distinguish shared features according to different scales, which leads to a loss of feature information and suboptimal results. To solve this problem, the authors improve on UPSNet (a unified panoptic segmentation network) by introducing a multiscale fusion module cascaded between layers into the semantic segmentation head of UPSNet. On the one hand, this enriches the feature information for differently scaled features by cascading the feature information of adjacent scales, and on the other hand, the feature information at each scale can be combined adaptively to achieve a better segmentation effect. Furthermore, a frequency domain attention mechanism is introduced into the backbone network of UPSNet to improve the feature extraction ability of the backbone network by learning more frequency domain feature information. The experimental results of the authors’ improved network on the Common Objects in Context (COCO) and Cityscapes data sets show that compared with UPSNet, the performance is significantly improved: the panoptic quality is improved by 0.9% and 1.6%, respectively.
Fetal ECG extraction using a novel polynomial network and non‐linear BSS method
Authors: Wang Lu , Zhao Chunhui
Published: August 2022

Long‐term monitoring of fetal heart is vital for early clinical diagnosis and timely treatment of fetus. However, the collected signals from the abdomen of the pregnant woman are always corrupted by many interfering sources, most significantly affected by the maternal electrocardiograph (ECG). Similar with blind source separation (BSS), fetal ECG extraction can be considered as the separation of fetal ECG from the recordings. This letter proposes a novel multi‐layer polynomial network to extract the fetal ECG waveform, where the non‐linear mixing process is approximated with multiple polynomials. The network starts with the first‐order polynomial layer, and further requirements to decrease the error between the output and target signal is achieved by increasing the number of layers. The proposed approach turns the inverse transformation of traditional BSS into a model learning problem, which is then solved by a simple convex optimization algorithm. Compared with the state‐of‐the‐art BSS methods, experimental results show that the proposed method has better performance.
Sphere detector with low complexity Euclidean distance computation based on affine transform modulation
Authors: Gaspar Danilo , Mendes Luciano , Pimenta Tales
Published: August 2022

The foreseen scale of connected autonomous and low power consumption devices in the near future is a challenging aspect for the next generation of mobile communication networks. As the number of available connection resources is limited, frequency‐time multiplexing may not be sufficient to meet the expected demand for capacity, where scheduling solutions might incur in undesired latency levels and also increase the power expenditure to meet a more stringent synchronisation. In this scenario, spatial multiplexing based on multi‐user multiple‐input multiple‐output can extend the uplink capacity at the cost of inter‐antenna interference at the base station, requiring more complex detection schemes. The sphere detector can mitigate the inter‐antenna interference, achieving close‐to‐optimum bit error rate performance with average polynomial complexity that still challenges the field programmable gate array implementation in terms of resources and area. To further reduce the sphere detector complexity, the authors introduce the concept of affine transform modulation, which allows us to describe the received signal in terms of the sequence of transmitted bits per symbol. The authors demonstrate that this approach allows to evaluate the Euclidean distance in the sphere detector algorithm in terms of the transmitted bits, replacing the complex inner product by a complex accumulator in its extensively accessed core function. The approach proposed in this paper leads to a considerable complexity reduction in terms of FLOPs for low‐order modulations while attaining the conventional sphere detector performance.
Physical properties of more than one thousand brightest cluster galaxies detected in the Canada-France-Hawaii Telescope Legacy Survey
Authors: Chu A. , Sarron F. , Durret F. , Márquez I.
Published: August 2022

Context. Brightest cluster galaxies (BCGs) are very massive elliptical galaxies found at the centres of clusters. Their study gives clues to the formation and evolution of the clusters in which they are embedded.

Aims. We analyse here in a homogeneous way the properties of a sample of more than 1000 BCGs in the redshift range 0.15 <  z <  0.7, based on images from the Canada-France-Hawaii Telescope Legacy Survey.

Methods. Based on a recent catalogue of 1371 clusters, we applied our automatic BCG detection algorithm and successfully identified 70% of the BCGs in our sample. We analysed their 2D photometric properties with GALFIT. We also compared the position angles of the BCG major axes with those of the overall cluster to which they belong.

Results. We find no evolution of the BCG properties with redshift up to z = 0.7, in agreement with previous results by Chu et al. (2021, A&A, 649, A42), who analysed a sample an order of magnitude smaller, but reaching a redshift z = 1.8. The Kormendy relation for BCGs is tight and consistent with that of normal elliptical galaxies and BCGs measured by other authors. The position angles of the BCGs and of the cluster to which they belong agree within 30 degrees for 55% of the objects with well-defined position angles.

Conclusions. The study of this very large sample of more than 1000 BCGs shows that they were mainly formed before z = 0.7 as we find no significant growth for the luminosities and sizes of central galaxies. We discuss the importance of the intracluster light in the interpretation of these results. We highlight the role of image depth in the modelling of the luminosity profiles of BCGs, and give evidence of the presence of an inner structure which can only be resolved on deep surveys with limiting apparent magnitude at 80% completeness m80 >  26 mag arcsec−2.
Null transit detections of 68 radial-velocity exoplanets observed by TESS
Authors: Lovos F. V. , Díaz R. F. , Nieto L. A.
Published: August 2022

In recent years, the number of exoplanets has grown considerably. The most successful techniques in these detections are the radial velocity (RV) and planetary transits techniques, the latter of which has been significantly advanced by the Kepler, K2 and, more recently, the Transiting Exoplanet Survey Satellite (TESS) missions. The detection of exoplanets by means of both transits and RVs is of importance because this allows the characterization of their bulk densities and internal compositions. The TESS survey offers a unique possibility to search for transits of extrasolar planets detected using RVs. In this work, we present the results of our search for transits of RV-detected planets using the photometry of the TESS space mission. We focus on systems with super-Earth- and Neptune-sized planets on orbits with periods of shorter than 30 days. This cut is intended to keep objects with a relatively high transit probability, and is also consistent with the duration of TESS observations on a single sector. Given the summed geometric transit probabilities, the expected number of transiting planets is 3.4 ± 1.8. The sample contains two known transiting planets. We report null results for the remaining 66 out of 68 planets studied, and we exclude in all cases planets larger than 2.4 R⊕ under the assumption of central transits. The remaining two planets orbit HD 136352 and were recently announced.
Interfacial behaviour of the high-entropy alloy CuCoCrFeNi and TC4 joint obtained by vacuum diffusion welding
Authors: Zhang Xianju , Ou Wuxing , Deng Weihao
Published: August 2022

In this work, good bonding between the high-entropy alloy (HEA) CuCoCrFeNi and TC4 titanium alloy was obtained through vacuum diffusion welding at a joining temperature of 1000  °C for 60 min under a pressure of 5 MPa. The results showed that the typical interfacial microstructure of the CuCoCrFeNi/TC4 joint was TC4/diffusion layer/island structure/dendritic structure/diffusion layer/HEA. Compared with Ti atoms, atoms such as Cr and Co from the CuCoCrFeNi substrate were prone to diffuse into the other material. Intermetallic compounds Cu0.5Fe0.5Ti and Co0.15Ni0.85Ti, solid solutions Ti(Fe, Cr)ss and amorphous materials were produced in the joint. The self-diffusion activation energy formula [see formula in PDF] can be used to approximate the order of diffusion capacity of elements, which follows in Cr >Fe> Co > Ni.
Educational interventions for patients with oropharyngeal dysphagia and their informal caregivers: a scoping review
Authors: Ghaddar Zahya , Durieux Nancy , Tohmé Aline , Pétré Benoit , Matar Nayla
Published: August 2022

Introduction:An essential component of oropharyngeal dysphagia (OD) management is education of patients and their caregivers. However, clear and precise recommendations are not always present in patient/caregiver education.Objective:The objective of this article is to summarize evidence reported in the literature from 1996 to 2021 for therapeutic patient education (TPE) in OD, with a focus on, the modalities of the interventions, as well as the evaluation of educational interventions for adult patients with OD and their informal caregivers (ICGs).Methods:A search for relevant studies was completed on: Medline (Ovid), PsycINFO (Ovid), and Scopus. Additional searches were performed on Google Scholar, and Open Grey. Data was collected relying on the Patient Education Research Characteristics model.Results-Discussion:In the 17 selected articles, different educational strategies and interventions were used through different modalities. Educational content mostly targeted knowledge about the normal mechanism of swallowing, application of specific rehabilitation exercises, and compensatory strategies. Evaluation of the effectiveness of these educational interventions includes several criteria. Important details are missing in the literature; such as details of the educational strategies amongst others.Conclusion:There is little evidence guiding educational interventions for OD patients and their ICG. Further studies are needed to understand which TPE program would be effective in OD, but first, there is a need to have an agreement on the goals of educational interventions.
Alexithymie bei Multipler Sklerose – eine narrative
Übersicht
Authors: Grigorescu Christina , Chalah Moussa A. , Ayache Samar S. , Palm Ulrich
Published: August 2022

Alexithymie ist ein multidimensionales Konstrukt der Persönlichkeit,
welches durch ein nach außen hin orientiertes Denken sowie
Schwierigkeiten bei der Gefühlsbeschreibung und -identifizierung einer
anderen Person gekennzeichnet ist. Obwohl sie bei psychiatrischen Patienten gut
beschrieben ist, wurde ihr Vorkommen und die Pathophysiologie im Zusammenhang
mit der Multiplen Sklerose (MS) erst neuerdings untersucht. In dieser narrativen
Übersichtsarbeit sollen Prävalenzen, Ursachen, neurobiologische
und klinische Befunde dargestellt werden. Die Prävalenz der Alexithymie
in MS reicht von 10 bis 53%. Es scheint Assoziationen mit
Angststörungen, Depressionen, Fatigue und einigen kognitiven Aspekten zu
geben. Die Beziehung zu klinischen und klassischen kognitiven
Variablen/Kriterien ist bislang wenig untersucht. Schlussendlich stellt
eine Arbeit einen pathophysiologischen Bezug dar und diskutiert eine aberrante
interhemisphärische Übertragung. Zusammenfassend zeigt die
Alexithymie bei MS eine negative Auswirkung auf die Lebensqualität,
deshalb stellt das Screening nach ihr einen wichtigen Punkt im
Krankheitsmanagement dar. Ihre Beziehung zu klinischen, emotionalen und
kognitiven Kofaktoren bedarf weiterer Untersuchungen. Größer
angelegte Studien inklusive bildgebender Verfahren sind dringend notwendig, um
ein besseres Verständnis für die neuronalen Mechanismen der
Alexithymie bei MS zu gewinnen.
Chronic Limb Ischemia due to Thrombosis of an Aneurysmal Degeneration of the Autogenous Vein Graft: A Case Report
Authors: Papageorgopoulou Chrysanthi P. , Nikolakopoulos Konstantinos M. , Ntouvas Ioannis G. , Papadoulas Spyros
Published: August 2022

Nonanastomotic aneurysmal degeneration of a great saphenous vein graft is an unusual condition, despite the common use of this conduit in arterial reconstructions. Vein grafts are at risk of degenerative changes, but the real cause remains unknown. Postoperative graft surveillance with duplex ultrasound scanning is important for maintaining patency of the venous graft. We present a rare case of chronic limb ischemia due to partial thrombosis of an aneurysm of the great saphenous vein graft.
Community Screening of Probable Dementia at Primary Care Center in Western India: A Pilot Project
Authors: Dhikav Vikas , Jadeja Bhargavi , Gupta Pooja
Published: August 2022

Introduction Timely detecting dementia is an important goal of clinicians and public health professionals alike for better management and prevention of complications. Community screening of dementia could be a powerful strategy. Facilities for dementia screening at primary care level are virtually nonexistent and are a prominent implementation gap. Hence, a study was done to assess the feasibility of dementia screening at primary care using General Practitioner Assessment of Cognition (GPCoG) scale among older adults with subjective memory complaints. It was further aimed to assess the frequency of cardiovascular risk factors in those who met screening criteria for cognitive impairment.

Materials and Methods Older adults coming to three urban primary care centers in western India for screening of noncommunicable diseases such as diabetes and hypertension (opportunistic screening) with subjective memory complaints were enrolled and screened for dementia using GPCoG. A Mini-Mental State Examination (MMSE) was done in patients who came alone for referral purpose in case the score levels in GPCoG examination met cutoff limits for informant interview. Written medical records were examined to assess status of comorbid vascular risk factors such as diabetes, hypertension, coronary artery disease, and cerebrovascular accidents.

Results A total of 350 older adults (M:F = 276: 74; mean age ± 68 ± 6.7 years) were screened out of 3,000 older adults who reported during the study period. There were 161 older adults with GPCoG score less than or equal to 5 (56.14%) and 149 subjects with MMSE less than or equal to 24 indicating significant cognitive impairment (42.5%). There were very few (n = 11, 3.14%) out of 350 people who came with caregivers; hence, MMSE was done along with for referral to healthcare providers. A total of 142 had comorbid diabetes/and or hypertension (40.5%). A total of 86 had diabetes alone (24.5%) and a total of 128 had hypertension (36.5%).

Conclusion Current study results indicate that using a simple screening tool such as GPCoG, community screening of probable dementia, is feasible in primary care settings, as is indicated by significant yield of probable dementia cases (42.5%). These cases can be referred to appropriate centers for further workup, confirmation of diagnosis, and treatment. Also, detection of comorbid cardiovascular conditions, for example, diabetes and hypertension, that can be managed along with cognitive impairment/dementia for potential prevention/further deterioration, which can strengthen noncommunicable disease screening.
Research on generalized locational marginal price of integrated electricity–heat–gas market considering integrated demand response
Authors: Lv Jun , Jiang Yuewen
Published: August 2022

The progressive development of the integrated energy system and the continuous reform of the electrical markets will lead to a gradual diffusion for the multi-energy coupling from the physical level to the market level. This gradual transformation will impose serious market challenges, and hence, proper pricing methods for integrated energy systems form one of the most essential requirements. This paper proposes a two-stage iterative clearing mechanism of an integrated electricity–heat–gas market considering integrated demand response (IDR). A market-clearing optimization model of an integrated electricity–heat–gas system based on the generalized locational marginal price (GLMP) is established for the first stage of market-clearing. Furthermore, GLMPs are decomposed to analyze the influencing factors and correlation. For the second stage, the elastic coefficient is utilized to model IDR, which includes the single energy demand response and the multi-energy alternative demand response. The load curves are acquired after an integrated demand response, and the two stages are iteratively executed until the load change is less than the threshold value. The proposed mechanism is verified on a test case. The decomposition results of GLMPs are elaborated, and the numerical results show that the clearing mechanism considering elastic load can reduce price spikes and the cost of purchasing energy.
Elastic interactions in physics are reflections in geometry
Authors: Dubeau François
Published: August 2022

A simple standard problem in physics is the study of elastic collisions between elements of an ideal system, which consists of two point masses and a wall. Based on energy and momentum conservation laws, solving the problem consists in finding the intersection of a straight line with a conic. Relationships between the solutions are easily obtained if we consider the right (fundamental) basis to express the solutions. The geometric interpretation follows easily: moving from one point to another on a conic using directions given by this basis. With simple changes in variables, reflections and rotations appear clearly. Similarities with other phenomena such as Heron’s reflection principle in optics and Kepler’s second law of planetary motion are pointed out.
A model for the prediction of the shielding effectiveness of cylindrical enclosure
Authors: Chen Kaibai , Gao Min , Zhou Xiaodong
Published: August 2022

This paper presents a model to predict the shielding effectiveness (SE) and resonant modes of cylindrical enclosure with apertures or dielectric substrate. In this model, the Robinson equivalent circuit model (RECM) is introduced to deal with aperture impedance, and the extended form of the Baum–Liu–Tesche equation is deduced to calculate the induced voltage in the enclosure. The electromagnetic topology (EMT) model is established to analyze the process of energy transmission inside the enclosure. The energy propagation coefficient matrix and the scattering coefficient matrix are calculated to deal with the SE results of the observation point. To quantify the efficiency of the proposed model, the calculation results are compared with the full-wave transmission line matrix method (TLM) and RECM through the Fréchet distance. The comparison results show that the accuracy of the proposed model is better over a wide frequency range compared with RECM, and meanwhile, it consumes less run time and fewer CPU resources than traditional numerical methods. The validity of the presented model is verified by TLM.
Nanocarbon ohmic electrodes fabricated by coaxial arc plasma deposition for phosphorus-doped diamond electronics application
Authors: Valappil Sreenath Mylo , Ohmagari Shinya , Zkria Abdelrahman , Sittimart Phongsaphak , Abubakr Eslam , Kato Hiromitsu , Yoshitake Tsuyoshi
Published: August 2022

n-Type (phosphorus-doped) diamond is a promising material for diamond-based electronic devices. However, realizing good ohmic contacts for phosphorus-doped diamonds limits their applications. Thus, the search for non-conventional ohmic contacts has become a hot topic for many researchers. In this work, nanocarbon ohmic electrodes with enhanced carrier collection efficiency were deposited by coaxial arc plasma deposition. The fabricated nanocarbon ohmic electrodes were extensively examined in terms of specific contact resistance and corrosion resistance. The circular transmission line model theory was used to estimate the charge collection efficiency of the nanocarbon ohmic electrodes in terms of specific contact resistance at a specific voltage range (5–10 V); they exhibited a specific contact resistance of 1 × 10−3 Ωcm2. The result revealed one order reduction in the specific contact resistance and, consequently, a potential drop at the diamond/electrode interface compared to the conventional Ti electrodes. Moreover, the fabricated nanocarbon electrodes exhibited high mechanical adhesion and chemical inertness over repeated acid treatments. In device applications, the nanocarbon electrodes were evaluated for Ni/n-type diamond Schottky diodes, and they exhibited nearly one order enhancement in the rectification ratio and a fast charge collection at lower biasing voltages.
High bandwidth frequency modulation of an external cavity diode laser using an intracavity lithium niobate electro-optic modulator as output coupler
Authors: Palmer S. , Boes A. , Ren G. , Nguyen T. G. , Tempone-Wiltshire S. J. , Longhurst N. , Farrell P. M. , Steiner A. , Marciniak Ch. D. , Monz T. , Mitchell A. , Scholten R. E.
Published: August 2022

We present a novel approach to high bandwidth laser frequency modulation. A lithium niobate chip is used as an intracavity electro-optic modulator in a tunable cateye external cavity diode laser. The modulator is conveniently integrated with the cateye output coupler, providing a unique approach to high bandwidth frequency stabilization and linewidth narrowing. The intracavity modulator feedback was successfully operated below 1 V and achieved superior frequency noise suppression compared to conventional feedback through diode injection current modulation. A closed loop bandwidth of 1.8 MHz was demonstrated, and the laser linewidth reduced to around 1 Hz as measured by the heterodyne measurement.
Numerical study on flow-induced vibrations of elastically mounted rectangular cylinders without and with barrier walls
Authors: Zeng Yuhang , Wang Yan , Wang Tongguang , Chen Qing
Published: August 2022

This work presents a two-dimensional (2D) numerical study on the flow-induced vibrations (FIV) of elastically mounted rectangular cylinders without and with barrier walls in a wide range of reduced velocities U*=1–200 and Scruton numbers Sc=0–64 at the Reynolds number of 1000. It reveals that a slender rectangular cylinder of aspect ratio 5:1 without barrier walls may experience vortex-induced vibration (VIV), while the one with barrier walls can have both VIV and soft galloping motions. The VIV motions of both cylinders occur at relatively small reduced velocities U*≤20, and their maximum amplitudes are gradually reduced with the increase in the Scruton number. The galloping motions of the cylinder with barrier walls take place at higher reduced velocities U*>30 with smaller frequencies and larger oscillation amplitudes. Quantitative analysis on the amplitude, displacement, and frequency of oscillation for both cylinders is carried out. Two phase diagrams of the vortex-shedding flow patterns are presented to illustrate the flow characteristics in VIV and galloping modes. Meanwhile, the dynamic mode decomposition analysis indicates the difference between the dominant mode of the dynamic flow field in the VIV and galloping motions. With the quasi-steady theory, it further shows that the occurrence of the soft galloping motion of the cylinder with barrier walls is caused by the negative slope of the lift coefficient at the angle of attack zero. These results may shed new light onto deeper understanding of the FIV phenomenon and provide some inspirations to engineering applications in the design of civil and offshore structures.
Research on flashover characteristics of typical interconnect structures on printed circuit board and influential factors under DC voltage
Authors: Lv Yuhui , Yang Xiong , Shao Xianjun , Yao Yitong , Chen Xiaoxin , Mu Haibao
Published: August 2022

With the development of high-density and highly integrated electronic devices, the insulation characteristics between the interconnects of printed circuit boards (PCBs) are the key issues to be considered in their design and production. Most of the existing studies on insulation characteristics are based on parallel interconnect structures; however, the possibility of flashover or breakdown on PCB at parallel interconnects is relatively low compared to other irregular structures. The flashover characteristics of PCB interconnects need to be more comprehensively presented. In this paper, the commonly used interconnects were divided into three typical structures. Under the same DC excitation, the “interconnect with pad” structure had the most severe electric field concentration, and the insulation characteristic of this structure was the worse of the three. Furthermore, the effects of the distance between the interconnect and pad size on the flashover voltages of the “interconnect with pad” structure were investigated and explained by the maximum electric field strength, which could be approximately calculated by the existing equation.
Dust charge fluctuation and ion acoustic wave propagation in dusty plasma with q-nonextensive hot and Maxwellian cold electrons
Authors: Thapa Shiva Bikram , Basnet Suresh , Khanal Raju
Published: August 2022

We have employed the self-consistent kinetic theory to study the linear dispersion relation of ion acoustic waves in a four-component plasma consisting of nonextensive hot electrons, Maxwellian cold electrons, positive ions, and dust particles. The dust charging process with the modified ion acoustic wave damping, as well as its unstable mode, has been graphically illustrated. It is found that the dust charging mechanism depends on the density of hot electrons, the degree of nonextensive electron distribution, and the temperature ratio of hot to cold electrons. It is shown that the damping and instability rates of ion acoustic waves due to dust charge fluctuations explicitly depend on the choice of electron distribution and the magnitude of dusty plasma parameters. In addition, we have studied the ion acoustic Landau damping in the absence of dust particles. It is found that the weak damping region broadens, while the strong damping region shrinks and is shifted toward the short wavelength region for the increase in the temperature ratio of hot to cold electrons.
Investigation of multiple-ion-source neutral beam operation conditions compatible with motional Stark effect diagnostics
Authors: Ko Jinseok
Published: August 2022

The motional Stark effect (MSE) diagnostic system at KSTAR (Korea Superconducting Tokamak Advanced Research) often suffers from the drawback of possible systematic uncertainties in measurements due to overlap of the MSE spectra generated from three different ion sources that constitute a single neutral beam injection system. In particular, one ion source injected in the most tangential direction always causes strong spectral overlaps which, therefore, imposes regulations and constraints on the energy combination among the ion sources. A Stokes-vector analysis has been performed to produce operation windows for the energy combination between the ion source used in the MSE measurement and the ion source with the largest tangential injection angle. The analysis includes various practical factors, such as the distortion of the transmission function of bandpass filters and pitch angle profiles collected from a vast amount of KSTAR discharges. The two-dimensional parameter space, or the contour plot, on the expected systematic offsets in the measured pitch angle has been generated from this analysis, which can serve as a quantitative guideline for operating the multiple-ion-source neutral beam heating system.
Flow and thermal radiation characteristics of a turbulent flame by large eddy simulation
Authors: Sun Yujia , Yu Ying , Chen Qing , Jiang Lin , Zheng Shu
Published: August 2022

Liquid fuel pool fire flame is a common combustion problem for liquid oil in many practical applications. Thermal radiation has considerable effect on its combustion process and fire spread. Based on the large eddy simulation method of the fireFOAM framework, the flame properties and thermal radiation characteristics of a 1 m diameter methanol pool fire are investigated. The flame structure features frequent buoyance-driven upward movement and air entrainment from surrounding environment due to turbulent mixing and combustion. The radiative heat feedback shows strong temporal and spatial variations, which is caused by the fluctuating behaviors of the temperature and species fields. The radiation transfer models have significant discrepancies in predicting the radiative heat feedback for all the surfaces with the weighted-sum-of-gray gases model producing better results. Ray effects of the solvers lead to unphysical non-uniform distributions of radiative heat flux on the bottom and side walls.