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Article ; Online: In situ capabilities of Small Angle X-ray Scattering

Feng Jinghua / Kriechbaum Manfred / Liu Li (Emily)

Nanotechnology Reviews, Vol 8, Iss 1, Pp 352-

2019 Volume 369

Abstract: Small Angle X-ray Scattering (SAXS) is an ideal characterization tool to explore nanoscale systems. In order to investigate nanostructural changes of materials under realistic sample environments, it is essential to equip SAXS with diverse in situ ... ...

Abstract	Small Angle X-ray Scattering (SAXS) is an ideal characterization tool to explore nanoscale systems. In order to investigate nanostructural changes of materials under realistic sample environments, it is essential to equip SAXS with diverse in situ capabilities based on the corresponding requirements. In this paper, we highlight the representative experimental setups and corresponding applications of five widely used in situ capabilities: temperature, pressure, stretching, flow-through, and electric field. Additionally, we also briefly introduce other four in situ techniques including humidity, high-throughput, rheology, and magnetic field.
Keywords	small angle x-ray scattering ; in situ ; capability ; nanoparticle ; nanomaterial ; Technology ; T ; Chemical technology ; TP1-1185 ; Physical and theoretical chemistry ; QD450-801
Language	English
Publishing date	2019-12-01T00:00:00Z
Publisher	De Gruyter
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Multi-layer structure of Inconel 625 coatings prepared by magnetron sputtering.

Feng, Jinghua / Yuan, Guangcui / Mao, Li / Leao, Juscelino / Ramic, Kemal / de Stefanis, Emily / Bedell, Ryan / Liu, Li Emily

Surface & coatings technology

2023 Volume 405

Abstract: The coating/substrate interface and oxide layers of the Inconel 625 film may have significant impacts on its material properties, especially the corrosion behavior of the film. However, since the interface and oxide layer can be very thin and ... ...

Abstract	The coating/substrate interface and oxide layers of the Inconel 625 film may have significant impacts on its material properties, especially the corrosion behavior of the film. However, since the interface and oxide layer can be very thin and experimental toolbox to characterize them is limited, the detailed vertical structure of Inconel 625 coatings remains poorly understood. In this study, a multi-layer structure in Inconel 625 film prepared by magnetron sputtering is revealed using X-ray reflectometry (XRR) and neutron reflectometry (NR) techniques. Thickness and major composition of each layer are obtained. The results indicate that there exists a ~2 nm-thick Cr-rich Inconel sublayer underneath the main Inconel 625 film. An oxide layer mainly consisting of NiO with thickness of ~2 nm is found on the surface of the main Inconel 625 film. In addition, we identified a ~2 Å contamination layer between sapphire substrate and Inconel film even after argon ion sputtering cleaning. We also found that the thickness of the main Inconel 625 film grows linearly with the deposition time, with thicknesses of other layers remaining constant. Our findings provide insight into the multi-layered structures of Inconel 625 coatings with atomic-scale spatial resolution and give directions for future study to improve the corrosion resistance of Inconel 625 coatings.
Language	English
Publishing date	2023-08-12
Publishing country	Switzerland
Document type	Journal Article
ISSN	0257-8972
ISSN	0257-8972
DOI	10.1016/j.surfcoat.2020.126545
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Increased prevalence of germline pathogenic CHEK2 variants in individuals with pituitary adenomas.

De Sousa, Sunita M C / McCormack, Ann / Orsmond, Andreas / Shen, Angeline / Yates, Christopher J / Clifton-Bligh, Roderick / Santoreneos, Stephen / King, James / Feng, Jinghua / Toubia, John / Torpy, David J / Scott, Hamish S

The Journal of clinical endocrinology and metabolism

2024

Abstract: Context: CHEK2 is a cell cycle checkpoint regulator gene with a long-established role as a clinically relevant, moderate risk breast cancer predisposition gene, with greater risk ascribed to truncating variants than missense variants.: Methods: We ... ...

Abstract	Context: CHEK2 is a cell cycle checkpoint regulator gene with a long-established role as a clinically relevant, moderate risk breast cancer predisposition gene, with greater risk ascribed to truncating variants than missense variants. Methods: We assessed 165 individuals with pituitary adenomas for CHEK2 variants. The study consisted of a primary cohort of 29 individuals who underwent germline and tumour whole exome sequencing, and a second, independent cohort of 136 individuals who had a targeted next-generation sequencing panel performed on both germline and tumour DNA (n=52) or germline DNA alone (n=84). Results: We identified rare, coding, non-synonymous germline CHEK2 variants amongst 3/29 (10.3%) patients in our primary cohort and 5/165 (3.0%) patients overall, with affected patients having a range of hormone secretion types (prolactinoma, thyrotrophinoma, somatotrophinoma and non-functioning pituitary adenoma). No somatic variants were identified. Two variants were definitive null variants (c.1100delC, c.444+1G>A), classified as pathogenic. Two variants were missense variants (p.Asn186His, p.Thr476Met), classified as likely pathogenic. Even when considering the null variants only, the rate of CHEK2 variants was higher in our cohort compared to national control data (1.8% vs. 0.5%, P=0.049). Conclusions: This is the first study to suggest a role for the breast cancer predisposition gene, CHEK2, in pituitary tumorigenesis, with pathogenic/likely pathogenic variants found in 3% of patients with pituitary adenomas. As pituitary adenomas are relatively common and typically lack classical autosomal dominant family histories, risk alleles - such as these variants found in CHEK2 - might be a significant contributor to pituitary adenoma risk in the general population.
Language	English
Publishing date	2024-04-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	3029-6
ISSN	1945-7197 ; 0021-972X
ISSN (online)	1945-7197
ISSN	0021-972X
DOI	10.1210/clinem/dgae268
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Book ; Online: Explored An Effective Methodology for Fine-Grained Snake Recognition

Huang, Yong / Huang, Aderon / Zhu, Wei / Fang, Yanming / Feng, Jinghua

2022

Abstract: Fine-Grained Visual Classification (FGVC) is a longstanding and fundamental problem in computer vision and pattern recognition, and underpins a diverse set of real-world applications. This paper describes our contribution at SnakeCLEF2022 with FGVC. ... ...

Abstract	Fine-Grained Visual Classification (FGVC) is a longstanding and fundamental problem in computer vision and pattern recognition, and underpins a diverse set of real-world applications. This paper describes our contribution at SnakeCLEF2022 with FGVC. Firstly, we design a strong multimodal backbone to utilize various meta-information to assist in fine-grained identification. Secondly, we provide new loss functions to solve the long tail distribution with dataset. Then, in order to take full advantage of unlabeled datasets, we use self-supervised learning and supervised learning joint training to provide pre-trained model. Moreover, some effective data process tricks also are considered in our experiments. Last but not least, fine-tuned in downstream task with hard mining, ensambled kinds of model performance. Extensive experiments demonstrate that our method can effectively improve the performance of fine-grained recognition. Our method can achieve a macro f1 score 92.7% and 89.4% on private and public dataset, respectively, which is the 1st place among the participators on private leaderboard. Comment: 13 pages, 5 figures. arXiv admin note: text overlap with arXiv:2203.02751 by other authors
Keywords	Computer Science - Computer Vision and Pattern Recognition
Subject code	006
Publishing date	2022-07-23
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Genomic instability drives tumorigenesis and metastasis and its implications for cancer therapy.

Guo, Shihui / Zhu, Xiao / Huang, Ziyuan / Wei, Chuzhong / Yu, Jiaao / Zhang, Lin / Feng, Jinghua / Li, Mingdong / Li, Zesong

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

2022 Volume 157, Page(s) 114036

Abstract: Genetic instability can be caused by external factors and may also be associated with intracellular damage. At the same time, there is a large body of research investigating the mechanisms by which genetic instability occurs and demonstrating the ... ...

Abstract	Genetic instability can be caused by external factors and may also be associated with intracellular damage. At the same time, there is a large body of research investigating the mechanisms by which genetic instability occurs and demonstrating the relationship between genomic stability and tumors. Nowadays, tumorigenesis development is one of the hottest research areas. It is a vital factor affecting tumor treatment. Mechanisms of genomic stability and tumorigenesis development are relatively complex. Researchers have been working on these aspects of research. To explore the research progress of genomic stability and tumorigenesis, development, and treatment, the authors searched PubMed with the keywords "genome instability" "chromosome instability" "DNA damage" "tumor spread" and "cancer treatment". This extracts the information relevant to this study. Results: This review introduces genomic stability, drivers of tumor development, tumor cell characteristics, tumor metastasis, and tumor treatment. Among them, immunotherapy is more important in tumor treatment, which can effectively inhibit tumor metastasis and kill tumor cells. Breakthroughs in tumorigenesis development studies and discoveries in tumor metastasis will provide new therapeutic techniques. New tumor treatment methods can effectively prevent tumor metastasis and improve the cure rate of tumors.
Language	English
Publishing date	2022-11-24
Publishing country	France
Document type	Journal Article ; Review
ZDB-ID	392415-4
ISSN	1950-6007 ; 0753-3322 ; 0300-0893
ISSN (online)	1950-6007
ISSN	0753-3322 ; 0300-0893
DOI	10.1016/j.biopha.2022.114036
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: U(VI) adsorption on hematite nanocrystals: Insights into the reactivity of {001} and {012} facets

Mei, Huiyang / Liu, Yang / Tan, Xiaoli / Feng, Jinghua / Ai, Yuejie / Fang, Ming

Journal of hazardous materials. 2020 Nov. 15, v. 399

2020

Abstract: Predicting the environmental behavior of U(VI) relies on identification of its local coordination structure on mineral surfaces, which is also an indication of the intrinsic reactivity of the facet. We investigated the adsorption of U(VI) on two facets ({ ...

Abstract	Predicting the environmental behavior of U(VI) relies on identification of its local coordination structure on mineral surfaces, which is also an indication of the intrinsic reactivity of the facet. We investigated the adsorption of U(VI) on two facets ({001} and {012}) of hematite (α-Fe₂O₃) by coupling experimental, spectroscopic and theoretical studies. Batch experiments results indicate higher removal capacity of the hematite {012} facet for U(VI) with respect to the {001} facet, due to the existence of extra singly and triply coordinated oxygen atoms with higher reactivity on the {012} facet while only doubly coordinated oxygen atoms exist on the {001} facet. The formation of surface complexes containing U(VI) is responsible for the appearance of a new sextuplet by Mössbauer spectra. The local structures of an inner-sphere edge-sharing bidentate complex on the hematite {001} and a corner-sharing complex on the {012} facet was deciphered by extended X-ray absorption fine structure spectroscopy. The chemical plausibility of the proposed structures was further verified by density functional theory calculation. This finding reveals the important influence of surficial hydroxyl groups reactivity on ions adsorption, which is helpful to better understand the interfacial interactions and to improve the prediction accuracy of U(VI) fate in aquatic environments.
Keywords	X-ray absorption spectroscopy ; adsorption ; density functional theory ; hematite ; nanocrystals ; oxygen ; prediction
Language	English
Dates of publication	2020-1115
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2020.123028
Database	NAL-Catalogue (AGRICOLA)

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Article: Efficient capture of ReO4− on magnetic amine-functionalized MIL-101(Cr): Revealing from selectivity to mechanism

Cai, Yawen / Feng, Jinghua / Tan, Xiaoli / Wang, Xin / Lv, Zhimin / Chen, Weiwei / Fang, Ming / Liu, Haining / Wang, Xiangke

Science of the total environment. 2021 June 01, v. 771

2021

Abstract: The efficient decontamination of pertechnetate (⁹⁹TcO₄⁻) is an essential task for managing radioactive ⁹⁹Tc in nuclear wastes. Perrhenate, (ReO₄⁻), as a nonradioactive analog, exhibits almost identical physicochemical properties as ⁹⁹TcO₄⁻. Herein, a ... ...

Abstract	The efficient decontamination of pertechnetate (⁹⁹TcO₄⁻) is an essential task for managing radioactive ⁹⁹Tc in nuclear wastes. Perrhenate, (ReO₄⁻), as a nonradioactive analog, exhibits almost identical physicochemical properties as ⁹⁹TcO₄⁻. Herein, a novel magnetic amine-functionalized MIL-101(Cr) (NH₂-MIL-101(Cr)@Fe₃O₄) was prepared and used to efficiently remove ReO₄⁻ from solution for the facile magnetic separation. A series of environmental parameters were considered to investigate the adsorption performance of NH₂-MIL-101(Cr)@Fe₃O₄. Experimental results suggested that NH₂-MIL-101(Cr)@Fe₃O₄ has reached a satisfied adsorption capacity (~401 mg/g) and a very fast adsorption kinetics at pH 7.0. The selectivity for ReO₄⁻ was maintained even in the presence of interfering anions with relatively high concentrations. ReO₄⁻ were mainly captured by N-donor sites of the surface-decorated amine via complexation and were trapped in the cavities of modified MIL-101(Cr). NH₂-MIL-101(Cr)@Fe₃O₄ exhibits satisfactory adsorption performance for ReO₄⁻ and can be conveniently separated from wastewaters after adsorption.
Keywords	adsorption ; decontamination ; magnetic separation ; magnetism ; pH ; wastewater
Language	English
Dates of publication	2021-0601
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2020.144840
Database	NAL-Catalogue (AGRICOLA)

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Article: Designed Core–Shell Fe3O4@Polydopamine for Effectively Removing Uranium(VI) from Aqueous Solution

Feng, Jinghua / Cai, Yawen / Wang, Xiangxue / Wang, Xin / Zhu, Mingyu / Fang, Ming / Liu, Zehua / Tan, Xiaoli

Bulletin of environmental contamination and toxicology. 2021 Jan., v. 106, no. 1

2021

Abstract: Adsorbents with the combination of magnetic separation and removal performance are expected for reducing the adverse impact of nuclear pollution. In this study, the core–shell Fe₃O₄@polydopamine (Fe₃O₄@PDA) was successfully synthesized and used for ... ...

Abstract	Adsorbents with the combination of magnetic separation and removal performance are expected for reducing the adverse impact of nuclear pollution. In this study, the core–shell Fe₃O₄@polydopamine (Fe₃O₄@PDA) was successfully synthesized and used for removal of uranium (U(VI)) ion from aqueous solution. The abundant N-containing groups derived from PDA exist as the chelate sites for U(VI) and contribute greatly for U(VI) removal. Experimental results show that Fe₃O₄@PDA (56.39 mg g–¹) exhibits greater sorption capacity for U(VI) removal compared with the pure Fe₃O₄ (9.17 mg g–¹). The sorption isotherm can be well fitted with Freundlich model and the sorption process is endothermic and spontaneous. The removal of U(VI) can be explained by the complexation of U(VI) with –NH–, –NH₂ and C–O in the surface of Fe₃O₄@PDA by X-ray photoelectron spectroscopy (XPS) analysis.
Keywords	X-ray photoelectron spectroscopy ; adsorbents ; aqueous solutions ; endothermy ; magnetic separation ; pollution ; sorption ; sorption isotherms ; toxicology ; uranium
Language	English
Dates of publication	2021-01
Size	p. 165-174.
Publishing place	Springer US
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	6895-0
ISSN	1432-0800 ; 0007-4861
ISSN (online)	1432-0800
ISSN	0007-4861
DOI	10.1007/s00128-020-02883-0
Database	NAL-Catalogue (AGRICOLA)

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Book ; Online: Reliable Representations Make A Stronger Defender

Li, Kuan / Liu, Yang / Ao, Xiang / Chi, Jianfeng / Feng, Jinghua / Yang, Hao / He, Qing

Unsupervised Structure Refinement for Robust GNN

2022

Abstract: Benefiting from the message passing mechanism, Graph Neural Networks (GNNs) have been successful on flourish tasks over graph data. However, recent studies have shown that attackers can catastrophically degrade the performance of GNNs by maliciously ... ...

Abstract	Benefiting from the message passing mechanism, Graph Neural Networks (GNNs) have been successful on flourish tasks over graph data. However, recent studies have shown that attackers can catastrophically degrade the performance of GNNs by maliciously modifying the graph structure. A straightforward solution to remedy this issue is to model the edge weights by learning a metric function between pairwise representations of two end nodes, which attempts to assign low weights to adversarial edges. The existing methods use either raw features or representations learned by supervised GNNs to model the edge weights. However, both strategies are faced with some immediate problems: raw features cannot represent various properties of nodes (e.g., structure information), and representations learned by supervised GNN may suffer from the poor performance of the classifier on the poisoned graph. We need representations that carry both feature information and as mush correct structure information as possible and are insensitive to structural perturbations. To this end, we propose an unsupervised pipeline, named STABLE, to optimize the graph structure. Finally, we input the well-refined graph into a downstream classifier. For this part, we design an advanced GCN that significantly enhances the robustness of vanilla GCN without increasing the time complexity. Extensive experiments on four real-world graph benchmarks demonstrate that STABLE outperforms the state-of-the-art methods and successfully defends against various attacks. Comment: Accepted in KDD2022
Keywords	Computer Science - Machine Learning ; Computer Science - Cryptography and Security
Subject code	006
Publishing date	2022-06-30
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: U(VI) adsorption on hematite nanocrystals: Insights into the reactivity of {001} and {012} facets.

Mei, Huiyang / Liu, Yang / Tan, Xiaoli / Feng, Jinghua / Ai, Yuejie / Fang, Ming

Journal of hazardous materials

2020 Volume 399, Page(s) 123028

Abstract	Predicting the environmental behavior of U(VI) relies on identification of its local coordination structure on mineral surfaces, which is also an indication of the intrinsic reactivity of the facet. We investigated the adsorption of U(VI) on two facets ({001} and {012}) of hematite (α-Fe
Language	English
Publishing date	2020-05-27
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2020.123028
Database	MEDical Literature Analysis and Retrieval System OnLINE

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