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Article ; Online: High CO and sulfur tolerant proton exchange membrane fuel cell anodes enabled by “work along both lines” mechanism of 2,6-dihydroxymethyl pyridine molecule blocking layer

Zhang, Tongqing / Liu, Wenqi / Ye, Ke / Li, Xiaojin

Journal of Colloid And Interface Science. 2024 Jan., v. 653 p.413-422

2024

Abstract: Proton exchange membrane fuel cells (PEMFCs) are hindered by their poor tolerance to CO and H₂S poisoning. Herein, we report an effective method, via engineering 2,6-dihydroxymethyl pyridine (DhmPy) molecule blocking layers on Pt surface, aiming to save ... ...

Abstract	Proton exchange membrane fuel cells (PEMFCs) are hindered by their poor tolerance to CO and H₂S poisoning. Herein, we report an effective method, via engineering 2,6-dihydroxymethyl pyridine (DhmPy) molecule blocking layers on Pt surface, aiming to save the poisoning issue for PEMFC anode reaction. The PEMFCs assembled by this catalyst produce a power density of 1.18 W cm⁻² @ 2.0 A cm⁻² and 1.32 W cm⁻² @ 2.0 A cm⁻², far exceeding commercial Pt/C after H₂/10 ppm CO poisoning and H₂/5 ppm H₂S poisoning tests, respectively. Density functional theory (DFT) indicates that a coronal molecule layer with a steric confinement height (1.82 Å), constructed by DhmPy, emerges more intensive adsorption energy compared to 2,6-pyridinedicarboxamide (DcaPy) and 2,6-diacetylpyridine (DAcPy), thereby more effectively inhibits the adsorption of large-sized CO and H₂S on Pt surface without affecting H₂ traverse. This “work along both lines” mechanism with the resistance of both CO and H₂S provides a new and promising design thought for high CO and sulfur tolerant PEMFC anodes.
Keywords	adsorption ; anodes ; catalysts ; density functional theory ; energy ; fuel cells ; fuels ; pyridines ; Proton exchange membrane fuel cell anode ; Molecule blocking layer ; CO tolerance ; Sulfur tolerance
Language	English
Dates of publication	2024-01
Size	p. 413-422.
Publishing place	Elsevier Inc.
Document type	Article ; Online
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2023.09.076
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Advantageous Strain Sensing Performances of FBG Strain Sensors Equipped with Planar UV-Curable Resin.

Li, Xiaojin / Zheng, Min / Hou, Dan / Wen, Qiao

Sensors (Basel, Switzerland)

2023 Volume 23, Issue 5

Abstract: The existing optical strain sensors based on fiber Bragg grating (FBG) have limitations, such as a complex structure, a limited strain range (±200 με) and poor linearity performance (R-squared value < 0.9920); these limitations affect their potential ... ...

Abstract	The existing optical strain sensors based on fiber Bragg grating (FBG) have limitations, such as a complex structure, a limited strain range (±200 με) and poor linearity performance (R-squared value < 0.9920); these limitations affect their potential practical applications. Here, four FBG strain sensors equipped with planar UV-curable resin are investigated. The proposed FBG strain sensors have a simple structure, a large strain range (±1800 με) and excellent linearity performance (R-squared value ≥ 0.9998); they further produce the following performances: (1) good optical properties, including an undistorted Bragg peak shape, narrow bandwidth (-3 dB bandwidth ≤ 0.65 nm) and a high side mode suppression ratio (SMSR, the absolute value of SMSR ≥ 15 dB); (2) good temperature sensing properties with high temperature sensitivities (≥47.7 pm/°C) and a good linearity performance (R-squared value ≥ 0.9990); and (3) excellent strain sensing properties with no hysteresis behavior (hysteresis error ≤ 0.058%) and excellent repeatability (repeatability error ≤ 0.045%). Based on their excellent properties, the proposed FBG strain sensors are expected to be applied as high-performance strain sensing devices.
Language	English
Publishing date	2023-03-03
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23052811
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Customizing Catalyst/Ionomer Interface for High-Durability Electrode of Proton Exchange Membrane Fuel Cells.

Zhang, Dongqing / Ye, Ke / Li, Xiaojin

ACS applied materials & interfaces

2023 Volume 15, Issue 39, Page(s) 46559–46570

Abstract: Commercialization applications of proton exchange membrane fuel cells (PEMFCs) are throttled by the durability issues of the electrodes prepared by using catalyst inks. Probing into a desirable catalyst/ionomer interface by adjusting the catalyst inks is ...

Abstract	Commercialization applications of proton exchange membrane fuel cells (PEMFCs) are throttled by the durability issues of the electrodes prepared by using catalyst inks. Probing into a desirable catalyst/ionomer interface by adjusting the catalyst inks is an effective way for obtaining high-durability electrodes. The present study investigated quantitatively the catalyst/ionomer interfaces based on the viscosity (η) property of the isopropyl alcohol (IPA) and dipropylene glycol (DPG) nonaqueous mixture solvent for the first time. Accelerated stress test (AST) showed that η as one of the characteristic parameters of the solvent had a threshold effect on the durability of electrodes. The electrodes in the half-cell and single cell all exhibited the highest durability using IPA:DPG = 2:6 (η = 27.00 cP) as the dispersion solvent in this work, embodied by its ECSA loss rate, and the cell potential loss was minimum after AST. The ECSA loss mechanism showed that a fine catalyst/ionomer interface structure was created for the highest durability electrode by regulating the η values of the solvent, and the carbon corrosion loss (
Language	English
Publishing date	2023-09-25
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.3c11463
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: [Construction of a stable centromere protein F overexpression cell model of hepatocellular carcinoma using CRISPR activation system].

Qi, Saiping / Li, Xiaojin / Zhou, Donghu / Huang, Jian

Sheng wu gong cheng xue bao = Chinese journal of biotechnology

2023 Volume 39, Issue 9, Page(s) 3738–3746

Abstract: Current studies have shown that centromere protein F (CENPF) was overexpressed in hepatocellular carcinoma (HCC) and might be involved in the pathogenesis of HCC. Specifically, due to the very large molecular weight (358 kDa) of CENPF full length protein, ...

Abstract	Current studies have shown that centromere protein F (CENPF) was overexpressed in hepatocellular carcinoma (HCC) and might be involved in the pathogenesis of HCC. Specifically, due to the very large molecular weight (358 kDa) of CENPF full length protein, only CENPF knock-down, but not overexpression models, were applied currently to explore the carcinogenicity of CENPF in HCC. Whether CENPF overexpression is a cause or an effect in HCC remains to be illustrated. We aimed to establish a CENPF overexpression cell model using CRISPR/dCas9 synergistic activation mediator (SAM) system with lentiMPHv2 and lentiSAMv2 vectors to explore the role of CENPF overexpression in HCC. Single guide RNAs (sgRNAs) that specifically identify the transcription initiation site of CENPF gene were synthesized and inserted into the lentiSAMv2 plasmid. Huh-7 and HCCLM3 cells were first transduced with lentiMPHv2 and then selected with hygromycin B. The cells were then transduced with lentiSAMv2 carrying specific sgRNA for CENPF gene, followed by blasticidin S selection. The mRNA and protein detection results of Huh-7 and HCCLM3 cells screened by hygromycin B and blasticidin S showed that the endogenous overexpression of CENPF can be induced by sgRNA1 and sgRNA4, especially by sgRNA4. By using the CRISPR/dCas9 technique, stable cell models with overexpressed CENPF were successfully constructed to explore the role of CENPF in tumorigenesis, which provides a reference for the construction of cell models overexpressing large molecular weight protein.
MeSH term(s)	Humans ; Carcinoma, Hepatocellular/genetics ; Liver Neoplasms/genetics ; RNA, Guide, CRISPR-Cas Systems ; Clustered Regularly Interspaced Short Palindromic Repeats ; Hygromycin B
Chemical Substances	centromere protein F ; RNA, Guide, CRISPR-Cas Systems ; Hygromycin B (3XQ2233B0B)
Language	Chinese
Publishing date	2023-10-05
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	1042206-7
ISSN	1872-2075 ; 1042-749X
ISSN (online)	1872-2075
ISSN	1042-749X
DOI	10.13345/j.cjb.220656
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Article ; Online: Hierarchical CdS/Ni

Yao, Yuchao / Ni, Xiaoxi / Xu, Dongyan / Li, Xiaojin

ACS applied materials & interfaces

2023

Abstract: Structural and morphological modulations play a crucial role in increasing the surface active sites of semiconductor photocatalysts for visible-light-driven water splitting. To fabricate a novel CdS/ ... ...

Abstract	Structural and morphological modulations play a crucial role in increasing the surface active sites of semiconductor photocatalysts for visible-light-driven water splitting. To fabricate a novel CdS/Ni
Language	English
Publishing date	2023-03-01
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.2c22717
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: High CO and sulfur tolerant proton exchange membrane fuel cell anodes enabled by "work along both lines" mechanism of 2,6-dihydroxymethyl pyridine molecule blocking layer.

Zhang, Dongqing / Liu, Wenqi / Ye, Ke / Li, Xiaojin

Journal of colloid and interface science

2023 Volume 653, Issue Pt A, Page(s) 413–422

Abstract: Proton exchange membrane fuel cells (PEMFCs) are hindered by their poor tolerance to CO and ... ...

Abstract	Proton exchange membrane fuel cells (PEMFCs) are hindered by their poor tolerance to CO and H
Language	English
Publishing date	2023-09-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2023.09.076
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Temporal Cohort Logic.

Zhang, Guo-Qiang / Li, Xiaojin / Huang, Yan / Cui, Licong

AMIA ... Annual Symposium proceedings. AMIA Symposium

2023 Volume 2022, Page(s) 1237–1246

Abstract: We introduce a new logic, called Temporal Cohort Logic (TCL), for cohort specification and discovery in clinical and population health research. TCL is created to fill a conceptual gap in formalizing temporal reasoning in biomedicine, in a similar role ... ...

Abstract	We introduce a new logic, called Temporal Cohort Logic (TCL), for cohort specification and discovery in clinical and population health research. TCL is created to fill a conceptual gap in formalizing temporal reasoning in biomedicine, in a similar role that temporal logics play for computer science and its applications. We provide formal syntax and semantics for TCL and illustrate the various logical constructs using examples related to human health. Relationships and distinctions with existing temporal logical frameworks are discussed. Applications in electronic health record (EHR) and in neurophysiological data resource are provided. Our approach differs from existing temporal logics, in that we explicitly capture Allen's interval algebra as modal operators in a language of temporal logic (rather than addressing it in the semantic structure). This has two major implications. First, it provides a formal logical framework for reasoning about time in biomedicine, allowing general (i.e., higher-levels of abstraction) investigation into the properties of this approach (such as proof systems, completeness, expressiveness, and decidability) independent of a specific query language or a database system. Second, it puts our approach in the context of logical developments in computer science, allowing potential translation of existing results into the setting of TCL and its variants or subsystems so as to illuminate opportunities and computational challenges involved in temporal reasoning for biomedicine.
MeSH term(s)	Humans ; Electronic Health Records ; Logic ; Medicine/methods ; Reproducibility of Results ; Semantics ; User-Computer Interface ; COVID-19 ; Datasets as Topic ; Electroencephalography ; Cohort Studies ; Time Factors
Language	English
Publishing date	2023-04-29
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
ISSN	1942-597X
ISSN (online)	1942-597X
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: A Query Engine for Self-controlled Case Series, with an application to COVID-19 EHR data.

Li, Xiaojin / Huang, Yan / Cui, Licong / Zhang, Guo-Qiang

AMIA Joint Summits on Translational Science proceedings. AMIA Joint Summits on Translational Science

2023 Volume 2023, Page(s) 350–359

Abstract: Self-controlled case series (SCCS) is a statistical method in epidemiological study design that uses individuals as their own controls, with comparisons made within the same individuals at different time points of observation. SCCS has been applied in ... ...

Abstract	Self-controlled case series (SCCS) is a statistical method in epidemiological study design that uses individuals as their own controls, with comparisons made within the same individuals at different time points of observation. SCCS has been applied in settings where it is difficult to identify comparison or control groups. To provide computational support for SCCS, we introduce a query engine called Self-Controlled Case Query (SCCQ) and use it to extract cohorts of self-controlled case series from a large-scale COVID-19 Electronic Health Records (EHR) dataset. Visual summary of the queried population through the R-Shiny visualization framework offers SCCQ's query result dashboard to the researcher. SCCQ allows the export of query-generated raw data files with a portable format that researchers can extend to create more intricate and robust visualization capabilities without needing a high-level of technical or statistical background. Our validation and evaluation experiments uncovered COVID-19 outcomes to be consistent with existing research findings. With SCCQ, cohort exploration, data extraction, and information visualization can be provided for structured EHR data to lower the barrier for clinical and epidemiological research.
Language	English
Publishing date	2023-06-16
Publishing country	United States
Document type	Journal Article
ZDB-ID	2676378-3
ISSN	2153-4063 ; 2153-4063
ISSN (online)	2153-4063
ISSN	2153-4063
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Article ; Online: Time to First Dressing Change after Peripherally Inserted Central Venous Catheter (PICC) Insertion in Breast Cancer Patients.

Zeng, Yinghua / Li, Wenji / Li, Xiaojin / Ma, Lanlan

Computational and mathematical methods in medicine

2022 Volume 2022, Page(s) 9380796

Abstract: Background: Peripherally inserted central catheter (PICC) is the most commonly used infusion route for chemotherapy in Chinese breast cancer patients because of its convenience, ease of operation, and many maintenance sites.: Objective: The objective ...

Abstract	Background: Peripherally inserted central catheter (PICC) is the most commonly used infusion route for chemotherapy in Chinese breast cancer patients because of its convenience, ease of operation, and many maintenance sites. Objective: The objective of this study is to investigate the effect of the first dressing change time on the healing of puncture site and the economic and psychological impact in patients with breast cancer after PICC insertion. Methods: From April 2020 to October 2020, 120 patients with PICC intubation after breast cancer surgery were selected as the research objects and divided into test group and the control group with 60 cases in each group according to the random number table method. The time of the first dressing change in the control group was routinely performed within 24 hours after PICC catheter placement, while the first dressing change in test group was performed at 48 hours after catheter placement. The effect of the first dressing change time after PICC catheterization on patients after breast cancer surgery was compared between the two groups. Results: There were significant differences between the two groups in the degree of pain after the first dressing change, the degree of oozing at the puncture site within 1 week, the duration of oozing, and the frequency of maintenance within 3 weeks, cost, depression, and anxiety ( Conclusion: The first dressing change 48 hours after PICC cauterization in patients after breast cancer surgery reduces significantly puncture site bleeding, reduces the frequency of dressing change, and benefits the physical and mental health of patients.
Language	English
Publishing date	2022-10-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	2252430-7
ISSN	1748-6718 ; 1748-670X ; 1027-3662
ISSN (online)	1748-6718
ISSN	1748-670X ; 1027-3662
DOI	10.1155/2022/9380796
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Article ; Online: Transcriptome Profiling of Different Developmental Stages on Longissimus Dorsi to Identify Genes Underlying Intramuscular Fat Content in Wannanhua Pigs

Li, Xiaojin / Yang, Yanan / Li, Lei / Ren, Man / Zhou, Mei / Li, Shenghe

Genes (Basel). 2023 Apr. 12, v. 14, no. 4

2023

Abstract: Intramuscular fat (IMF) is a key index to measure the tenderness and flavor of pork. Wannanhua pig, a famous indigenous pig breed in Anhui Province, is renowned for its high lipid deposition and high genetic divergence, making it an ideal model for ... ...

Abstract	Intramuscular fat (IMF) is a key index to measure the tenderness and flavor of pork. Wannanhua pig, a famous indigenous pig breed in Anhui Province, is renowned for its high lipid deposition and high genetic divergence, making it an ideal model for investigating the lipid position trait mechanisms in pigs. However, the regulatory mechanisms of lipid deposition and development in pigs remain unclear. Furthermore, the temporal differences in gene regulation are based on muscle growth and IMF deposition. The purpose of this study was to study the expression changes of longissimus dorsi (LD) at different growth stages of WH pigs at the molecular level, to screen the candidate genes and signaling pathways related to IMF during development by transcriptome sequencing technology, and to explore the transcriptional regulation mechanism of IMF deposition-related genes at different development stages. In total, 616, 485, and 1487 genes were differentially expressed between LD60 and LD120, LD120 and LD240, and LD60 and LD240, respectively. Numerous differentially expressed genes (DEGs) associated with lipid metabolism and muscle development were identified, and most of them were involved in IMF deposition and were significantly up-regulated in LD120 and LD240 compared to LD60. STEM (Short Time-series Expression Miner) analysis indicated significant variations in the mRNA expression across distinct muscle development stages. The differential expression of 12 selected DEGs was confirmed by RT-qPCR. The results of this study contribute to our understanding of the molecular mechanism of IMF deposition and provide a new way to accelerate the genetic improvement of pork quality.
Keywords	flavor ; gene expression ; gene expression regulation ; genes ; genetic improvement ; genetic variation ; intramuscular fat ; lipid metabolism ; lipids ; longissimus muscle ; models ; muscle development ; pork ; pork quality ; swine ; swine breeds ; time series analysis ; transcription (genetics) ; transcriptome ; China
Language	English
Dates of publication	2023-0412
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2527218-4
ISSN	2073-4425
ISSN	2073-4425
DOI	10.3390/genes14040903
Database	NAL-Catalogue (AGRICOLA)

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