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Taenia laticollis and a potentially novel Taenia species from the Eurasian lynx (Lynx) in Northwestern China

INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2021年 16卷 183-186页

作者： Liu, Gang Zhao, Shanshan Hornok, Sandor Chen, Xueling wang, suwen Tan, Wenbo Gu, Xinli wang, Yuanzhi Shihezi Univ Sch Med Dept Basic Med Shihezi Xinjiang Uygur Peoples R China Univ Vet Med Dept Parasitol & Zool Budapest Hungary Shihezi Univ Coll Anim & Sci Dept Vet Med Shihezi Xinjiang Uygur Peoples R China Shihezi Univ Sch Med Affiliated Hosp 1 NHC Key Lab Prevent & Treatment Cent Asia High In Shihezi City Xinjiang Uygur Peoples R China

The Eurasian lynx (Lynx) is a medium-sized wild cat species distributed throughout Eurasia. There has been no report on Taenia species (Cestoda: Cyclophyllidea) infecting this felid in China. In this study, 24 tapeworms were found in two Eurasian lynxes (#1 and #2) in Xinjiang Uygur Autonomous Region (XUAR), northwestern China. Based on the number, measurements and the shape of rostellar hooks, these tapeworms belong to two Taenia species. According to the number (n = 32) and length (185-194 mu m) of small hooks, the first Taenia species (n = 1, found in #2 lynx) was identified as Taenia laticollis. Phylogenetically, this species was clustered with T. laticollis genotype C (JX860623) based on its cytochrome c oxidase subunit 1 (cox1) and 16S rDNA sequences. The second Taenia species (n = 23, provisionally named as "Taenia sp.") may represent a potentially novel tapeworm species, because of its obvious differences in the shape and lengths (174-182 mu m, 98-113 mu m) of large and small rostellar hooks in comparison with ten taxonomically related species. Molecular and phylogenetic analyses of the cox1 gene revealed that "Taenia sp." has the highest rate of sequence identity (92.93%, 368/396 bp) with Taenia hydatigena reported from sheep (Ovis aries) in Slovakia. To sum up, a potentially novel tapeworm species, "Taenia sp.", is found in Eurasian lynx. In addition, T. laticollis was found for the first time in China.

关键词： Cestoda Tapeworms Cyclophyllidea Taeniidae cox1

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α-MnO2 nanorods supported on three dimensional graphene as high activity and durability cathode electrocatalysts for magnesium-air fuel cells

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CATALYSIS TODAY 2020年 355卷 304-310页

作者： Zhang, Tingwei Li, Zhongfang Sun, Peng wang, Likai Niu, Xueliang wang, suwen Shandong Univ Technol Sch Chem & Chem Engn Zibo 255049 Peoples R China Anshan Normal Univ Sch Chem & Life Sci Anshan 114007 Peoples R China

Magnesium-air fuel cells are considered as a potential energy conversion device owing to a high theoretical specific capability, economic viability and environmental friendliness. In this work, alpha-MnO2 nanorods are supported on three-dimensional graphene (3D-G) which is fabricated with coal tar pitch as the carbon precursor and MgO as the template via hydrothermal reaction. The synergistic interactions between alpha-MnO2 nanorods and 3D-G improve the activity and durability performance for oxygen reduction reaction in 0.1 mol L-1 KOH solution. alpha-MnO2/3D-G exhibits a high half-wave potential (0.81 V) and superior to alpha-MnO2/C (0.72 V) and alpha-MnO2/rGO (0.76 V), and close to 20 wt% PVC (0.83 V). alpha-MnO2/3D-G also possesses higher durability than commercial PVC. Furthermore, the magnesium-air fuel cells based on alpha-MnO2/3D-G, air-cathode display the peak power density (106.2 mW cm(-2)), and continuously durability (discharge for 16 h at 50 mA cm(-2) with the mere decay of cell voltage by 7.6%). These results prove that alpha-MnO2 /3D-G catalyst with high activity and durability can be a promising electrocatalyst in magnesium-air fuel cells.

关键词： Magnesium-air fuel cells Oxygen reduction reaction alpha-MnO2 nanorods Three-dimensional graphene Electrocatalyst

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Two-dimensional closely packed amide polyphthalocyanine iron absorbed on Vulcan XC-72 as an efficient electrocatalyst for oxygen reduction reaction

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CATALYSIS TODAY 2020年 353卷 279-286页

作者： Sun, Chongyun Li, Zhongfang Yang, Jianwei wang, suwen Zhong, Xizhan wang, Likai Shandong Univ Technol Sch Chem & Chem Engn Zibo 255049 Peoples R China

It is crucial to design the inexpensive and highly efficient electrocatalysts for oxygen reduction reaction (ORR) for the future commercialization of fuel cell devices. Herein, a closely packed amide polyphthalocyanine iron (CPMPcFe) with two-dimensional planar structure supported by Vulcan XC-72 was firstly prepared, and then the precursor was sintered at 400 degrees C under an Ar flow to obtain the CPMPcFe/C (1:1) catalyst. The SEM and TEM images of the CPMPcFe/C catalysts confirmed that CPMPcFe was well distributed on the surface of Vulcan XC-72. X-ray photoelectron spectroscopy (XPS) further identified the active center of CPMPcFe/C (1:1, 400 degrees C) was FeN4 in the polyphthalocyanine ring. Electrochemically, CPMPcFe/C displays excellent oxygen reduction reaction electrocatalytical properties. Firstly, it showed a half-wave potential of 0.87 V, which was more positive than those of iron phthalocyanine/C (FePc/C, 0.71 V) and 6 wt% Pt/C (0.83 V). The oxygen reduction current loss of CPMPcFe/C after 5000-cycle cyclic voltammetry test was 0.05 mA cm(-2), while that of FePc/C was 0.35 mA cm(-2). Chronoamperometry tests showed that FePc/C exhibited a rapid decrease of the current density by about 28.2%, while there was only about 16.9% loss for the current density of CPMPcFe/C under the same operation.

关键词： Oxygen reduction reaction Electrocatalysts Polyphthalocyanine iron The durability

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A Step Toward Deep Online Aggregation

arXiv

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arXiv 2023年

作者： Sheoran, Nikhil Chockchowwat, Supawit Chheda, Arav wang, suwen Verma, Riya Park, Yongjoo Databricks+ University of Illinois Urbana-Champaign United States

For exploratory data analysis, it is often desirable to know what answers you are likely to get before actually obtaining those answers. This can potentially be achieved by designing systems to offer the estimates of a data operation result—say op(data)—earlier in the process based on partial data processing. Those estimates continuously refine as more data is processed and finally converge to the exact answer. Unfortunately, the existing techniques—called Online Aggregation (OLA)—are limited to a single operation;that is, we cannot obtain the estimates for op(op(data)) or op(...(op(data))). If this Deep OLA becomes possible, data analysts will be able to explore data more interactively using complex cascade operations. In this work, we take a step toward Deep OLA with evolving data frames (edf), a novel data model to offer OLA for nested ops—op(...(op(data)))—by representing an evolving structured data (with converging estimates) that is closed under set operations. That is, op(edf) produces yet another edf;thus, we can freely apply successive operations to edf and obtain an OLA output for each op. We evaluate its viability with Wake, an edf-based OLA system, by examining against state-of-the-art OLA and non-OLA systems. In our experiments on TPC-H dataset, Wake produces its first estimates 4.93× faster (median)—with 1.3× median slowdown for exact answers—compared to conventional systems. Besides its generality, Wake is also 1.92× faster (median) than existing OLA systems in producing estimates of under 1% relative errors. Copyright © 2023, The Authors. All rights reserved.

关键词： Wakes

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Interfacial Polarization Triggered by Covalent-Bonded MXene and Black Phosphorus for Enhanced Electrochemical Nitrate to Ammonia Conversion

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ADVANCED ENERGY MATERIALS 2023年第31期13卷 2301136-2301136页

作者： wang, suwen Song, Chengfang Cai, Yanjiang Li, Yongfu Jiang, Peikun Li, Hui Yu, Bing Ma, Tianyi Zhejiang A&F Univ State Key Lab Subtrop Silviculture Hangzhou 311300 Peoples R China Zhejiang A&F Univ Sch Environm & Resources Hangzhou 311300 Peoples R China RMIT Univ Sch Sci Melbourne Vic 3000 Australia

MXenes have recently emerged as a new class of electrocatalysts for diverse energy conversion reactions, but they are generally considered to be catalytically inert. Herein, a strategy of interfacial polarization is put forward to improve the catalytic activity of MXenes, with the construction of an interfacial structure consisting of black phosphorus (BP) nanoflakes and Nb2C MXene nanosheets for electrochemical nitrate reduction to ammonia as a proof of concept. The experimental and computational results reveal that a strong interfacial polarization is built between BP nanoflakes and Nb2C nanosheets in the prepared BP/Nb2C composite. The polarization of Nb centers by adjacent BP sites gives rise to the formation of positively centered Nb atoms and BP-polarized Nb atoms, which synergistically catalyze the cleavage of N-O bonds in HNO2* to form NO*. In addition, the stabilization of monatomic *N by the BP/Nb2C composite is also enhanced compared with BP nanoflakes and Nb2C nanosheets. As a result, both the ammonia yield rate and Faraday efficiency of the BP/Nb2C composite are much higher than that of BP nanoflakes and Nb2C nanosheets. Overall, this work shows the great potential for constructing a strong interfacial polarization to improve the catalytic performance of MXenes-based electrocatalysts.

关键词： ammonia synthesis electrocatalysis interfacial polarization nitrate reduction

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Passivating Oxygen Evolution Activity of NiFe-LDH through Heterostructure Engineering to Realize High-Efficiency Electrocatalytic Formate and Hydrogen Co-Production

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SMALL 2023年第27期19卷 2208027-2208027页

作者： Jiang, Shuai Xiao, Tongyao Xu, Cui wang, suwen Peng, Hui-Qing Zhang, Wenjun Liu, Bin Song, Yu-Fei Beijing Univ Chem Technol Coll Chem Beijing Adv Innovat Ctr Soft Matter Sci & Engn State Key Lab Chem Resource Engn Beijing 100029 Peoples R China City Univ Hong Kong Ctr Superdiamond & Adv Films COSDAF Tat Chee Ave Hong Kong Peoples R China City Univ Hong Kong Dept Mat Sci & Engn Tat Chee Ave Hong Kong Peoples R China Guangdong Prov Key Lab Fuel Cell Technol Guangzhou 510640 Peoples R China

An electrocatalytic methanol oxidation reaction (MOR) is proposed to replace oxygen evolution reaction (OER) in water electrolysis owing to the favorable thermodynamics of MOR than OER. However, there is still a competition between the MOR and the OER when the applied potential is in the conventional OER zone. How to inhibit OER while maintaining efficient MOR is an open and challenging question, and there are few reports focusing on this thus far. Herein, by taking NiFe layered double hydroxide (LDH) as a model catalyst due to its intrinsically high catalytic activity for the OER, the perspective of inhibiting OER is shown and thus promoting MOR through a heterogenous engineering of NiFe-LDH. The engineered heterostructure comprising NiFe-LDH and in situ formed NiFe-hexylaminobenzene (NiFe-HAB) coordination polymer exhibits outstanding electrocatalytic capability for methanol oxidation to formic acid (e.g., the Faradaic efficiencies (FEs) of formate product are close to 100% at various current densities, all of which are much larger than those (53-65%) on unmodified NiFe-LDH). Mechanism studies unlock the modification of NiFe-HAB passivates the OER activity of NiFe-LDH through tailoring the free energies for element reaction steps of the OER and increasing the free energy of the rate-determining step, consequently leading to efficient MOR.

关键词： heterogenous engineering inhibition of oxygen evolution in situ semi-transformation methanol oxidation to formic acid NiFe-LDHs

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Magnetic Levitation for Spherical Drag-Free Sensor Ground Testing

Magnetic Levitation for Spherical Drag-Free Sensor Ground Te...

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IEEE Aerospace Conference

作者： Alfauwaz, Abdulrahman Alhusain, Abdulaziz wang, suwen Lipa, John KACST King Abdullah Rd Riyadh Saudi Arabia Technol Control Co Khurais RdTCC Bldg Riyadh Saudi Arabia Hainan Trop Ocean Univ OOIT Sanya Hainan Peoples R China Stanford Univ Dept Phys Stanford CA 94304 USA

ISBN: (纸本)9781728127347

Testing drag-free proof mass systems for gravitational physics requires a ground test system that simulates space conditions as closely as possible. In this experiment, a magnetic levitation system was built, which can levitate, hold, and spin a hollow sphere in a vacuum to simulate operations in a zero-G environment. An optical shadow sensor consisting of an infrared emitter and a pair of photodiodes is used to determine the position of the sphere. A custom-made electronic board converts the analog signal to digital. The board has a switch to reverse the current direction through the coil in case the sphere becomes magnetized and is attracted to the coil in the vacuum. Digital control code has been developed to create a stable feedback control system to drive the coil and hold the sphere in a stable levitating position. The position of the sphere can be adjusted digitally. The system is designed to achieve initial levitation and to restore the sphere to its levitating position if it drops out of lock. COMSOL Multiphysics[1] was used for thermal and magnetic simulation and system analysis. Importantly, the heat generated by the coil is not easily dissipated in the vacuum. The design is optimized to ensure that the coil can be run for at least two hours without overheating. The sphere is spun using four coils driven by digitally generated sine and cosine functions to produce a rotating magnetic field around its equator. Operation up to 18 Hz is easily achieved. The system can be used to test the three-axis optical sensor system Differential Optical Shadow Sensor (DOSS)[2], which is being developed separately, by rapidly switching to the DOSS sensor while the sphere is levitating. Small magnetic pulses can also be used to simulate thruster perturbations in the plane orthogonal to the support axis.

关键词： Feedback control

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Emotional Reaction Intensity Estimation Based on Multimodal Data

arXiv

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arXiv 2023年

作者： wang, Shangfei Wu, Jiaqiang Zheng, Feiyi Li, Xin Li, Xuewei wang, suwen Wu, Yi Chang, Yanan Miao, Xiangyu University of Science and Technology of China China

This paper introduces our method for the Emotional Reaction Intensity (ERI) Estimation Challenge, in CVPR 2023: 5th Workshop and Competition on Affective Behavior Analysis in-the-wild (ABAW). Based on the multimodal data provided by the originazers, we extract acoustic and visual features with different pretrained models. The multimodal features are mixed together by Transformer Encoders with cross-modal attention mechnism. In this paper, 1. better features are extracted with the SOTA pretrained models. 2. Compared with the baseline, we improve the Pearson’s Correlations Coefficient a lot. 3. We process the data with some special skills to enhance performance ability of our model. Copyright © 2023, The Authors. All rights reserved.

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Screening of saccharomyces cerevisiae: A strategy to enhance flavour of jujube liquor

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American Journal of Biochemistry and Biotechnology 2020年第3期16卷 322-331页

作者： Lu, Yao wang, suwen Jin, Jingyu wang, Jie Li, Rongbin Guan, Xiaolei Liu, Yaqiong College of Food Science and Technology Hebei Agricultural University Hebei071000 China

The main objective of this study was to isolate newly indigenous yeast strains from the fermentation of jujube liquor. 19 isolated yeast strains were obtained by spontaneous solid-state fermentation and flavour characteristics of the fermented jujube juice were also compared from above selected strains. 3 strains (JM-3, JM-13, JM-17) were screened out and identified as Saccharomyces cerevisiae (S. cerevisiae) by molecular identification. Tolerance tests for glucose, temperature, pH and alcohol of three yeast stains were compared. The result showed that the glucose tolerance of JM-3 was better those of JM-13 and JM-17, the temperature and pH tolerance were similarities in three yeast strains and the alcohol tolerance of JM-13 was better those of JM-3 and JM-17. Jujube juice was used as medium for single and mixed-culture fermentation with commercial S. cerevisiae G-1. All the important aroma compounds were detected in jujube juice fermented with JM-13+G-1 and JM-13 had an excellent potential starter for jujube liquor production. © 2020 Xiaolei Guan, Yaqiong Liu, Yao Lu, suwen wang, Jingyu Jin, Jie wang and Rongbin Li.

关键词： Yeast

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RETRACTED: The Influence of ICAM1 3′UTR Gene Polymorphism on the Occurrence and Metastasis of Primary Liver Cancer (Retracted Article)

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BIOMED RESEARCH INTERNATIONAL 2021年第1期2021卷

作者： He, Li wang, suwen Ma, Xusheng Xinjiang Med Univ Houbo Coll 12 Shengli Rd Karamay Xinjiang Peoples R China Shihezi Univ Sch Med Beier Rd Shihezi Xinjiang Peoples R China

Objective. In this study, we explored the influence of single nucleotide polymorphism (SNP) in the noncoding region of intercellular adhesion molecule 1 (ICAM1) gene on the occurrence and metastasis of primary hepatocellular carcinoma (PHC). Methods. Sanger sequencing was used to analyze the genotypes of rs3093032, rs923366, and rs281437 locus in the 3' untranslated region (UTR) of the ICAM1 gene. The level of plasma ICAM1 was analyzed by enzyme-linked immunosorbent assay (ELISA). Results. After adjusting for risk factors such as BMI, smoking, drinking, family history of tumors, and hepatitis B virus test results, the CT genotype at rs3093032 of the ICAM1 gene (OR = 0.19, 95% CI: 0.08-0.44, P < 0.01), dominance model (OR = 0:23, 95% CI: 0.11-0.48, P < 0.01), and T allele (OR = 0:27, 95% CI: 0.14-0.53, P < 0:01) were related to the reduced risk of PHC susceptibility. rs923366 locus CT genotype (OR = 0:63, 95% CI: 0.44-0.90, P = 0.01), TT genotype (OR = 0.23, 95% CI: 0.10-0.53, P < 0.01), dominant model (OR = 0:55, 95% CI: 0.39-0.77, P < 0.01), recessive model (OR = 0:28, 95% CI: 0.12-0.62, P < 0:01), and T allele (OR = 0.55, 95% CI: 0.42-0.73, P < 0.01) were related to a reduction in the risk of PHC susceptibility. rs281437 locus CT genotype (OR = 2:08, 95% CI: 1.40-3.09, P < 0: 01), TT genotype (OR = 5.20, 95% CI: 2.22-12.17, P < 0.01), dominant model (OR = 2:45, 95% CI: 1.69-3.54, P < 0.01), recessive model (OR = 4.32, 95% CI: 1.86-10.06, P < 0.01), and T allele (OR = 2.46, 95% CI: 1.79-3.38, P < 0.01) were significantly related to the increased risk of PHC susceptibility. SNPs at rs3093032, rs923366, and rs281437 of the ICAM1 gene were significantly correlated with TNM stage and tumor metastasis of PHC patients (P < 0:05). Conclusion. SNPs at rs3093032, rs923366, and rs281437 in the 3' UTR region of the ICAM1 gene are related to the occurrence and metastasis of PHC.

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