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Structural characterization and anti-inflammatory activities of novel polysaccharides obtained from Pleurotus eryngii

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Food Science and Human Wellness 2024年第5期13卷 3031-3042页

作者： Han Wang sai ma Alfred Mugambi mariga Qiuhui Hu Qian Xu Anxiang Su Ning ma Gaoxing ma College of Food Science and Engineering Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and SafetyNanjing 210023China School of Agriculture and Food Science Meru University of Science and TechnologyMeru 972-60200Kenya

Natural polysaccharides named PEP-0.1-1,PEP-0-1 and PEP-0-2 from edible mushroom species Pleurotus eryngii were obtained in the present *** showed that molecular weights of these polysaccharides were 3235,2041 and 23933 Da,***,structural characterization revealed that PEP-0.1-1 had a→4-α-D-Glcp-1→backbone and contained→4)-α-D-Glcp and→4)-β-D-Glcp reducing end ***-0-1 backbone contained→4-α-D-Glcp-1→and→6-α-3-O-Me-D-Galp-1→,and the side chains containedα-D-Glcp,β-D-manp-1→andα-D-Glcp-3→.However,PEP-0-2 backbone consisted of→4-α-DGlcp-1→and→6-α-3-O-Me-D-Galp-(1→6)-α-D-Galp-1→while the side chains containedα-D-Glcp andβ-D-manp-1→.Biological activity analysis was then carried out and found that all these polysaccharides could significantly suppress the relative mRNA expression of toll-like receptor 4,nitric oxide(NO),tumor necrosis factor-α,interleukin(IL)-1βand IL-6 in lipopolysaccharide(LPS)-induced inflammation of RAW264.7 cells,as well as the over secretion of the above cell ***,Western blotting analysis revealed that all these purified fractions displayed significant inhibition effects on the expression of c-Jun N-terminal kinases protein induced by LPS in mitogen activated protein kinase pathway,along with the relieving on the inhibition effect of LPS on IκB-αprotein *** summary,the information generated by the present study could provide a theoretical basis for the exploration of novel healthy food materials from edible mushroom with antiinflammation activities.

关键词： Pleurotus eryngii Polysaccharides Structural characterization Anti-inflammatory activity

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Comprehensive Utilization of Paigeite Ore Using Iron Nugget making Process

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Journal of Iron and Steel Research International 2012年第6期19卷 9-13页

作者： DING Yin-gui WANG Jing-song WANG Guang ma sai XUE Qing-guo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The feasibility of paigeite ore treatment with iron nugget making process is proved. The isothermal reduc- tion experiments at laboratory scale were carried out, using carbon bearing pellets which were made of boron contai- ning iron concentrate and pulverized coal mainly, from 1 623 to 1 723 K with different heating time. The results indi- cated that iron nugget making process depends mainly on heating time and temperature. And the iron nugget and slag can separate in a clean manner at 1 673 K for 15 min. For the iron nugget, the C content is 3.57% （mass percent） and B is 0. 065~ （mass percent）. The B203 content of slag is 20.01~/00, and the boron was concentrated into one phase which is identified as suanite （Mg2BaOs） during the solidification. With an extraction ratio of 80~ under the atmospheric conditions, the activity of boron in slag is good. The boron-rich slag can be used to extract boric or boric acid and alleviate the shortage of boron resource. Through series of calculation and analysis related, it can be conclu- ded that the recovery ratio of Fe and boron are about 98% and 97% respectively. The results show that this method is feasible and effective on the utilization of paigeite ore.

关键词： boron containing iron concentrate carbon bearing pellets iron nugget boron-rich slag

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Pedestrian Mortality between 2006 and 2010 in China: Findings from Non-police Reported Data

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Biomedical and Environmental Sciences 2013年第10期26卷 853-856页

作者： ma sai HU Guo Qing LI Qing Feng ZHOU mai Geng Johns Hopkins International Injury Research Unit Johns Hopkins Bloomberg School of Public Health Department of Epidemiology and Health Statistics School of Public HealthCentral South University Chinese Center for Disease Control andPrevention

Pedestrian safety in China is an important but largely neglected issue, in part due to the substantial under-reporting within police data. In this study we aimed to examine changes in pedestrian fatality between 2006 and 2010 in China using non-police reported data. A multi-year study was conducted based on the mortality data during 2006-2010 from the Disease Surveillance Points （DSP） data in China. Between 2006 and 2010, the crude pedestrian mortality increased from 7.0 to 10.5 per 100 000 populations. Annual pedestrian mortality from DSP data was 13 times in 2006 and 55 times in 2010 mortality for pedestrians and passengers from police-reported data in the corresponding years. After controlling for sex, age,

关键词： 2010 Findings from Non-police Reported Data Pedestrian Mortality between 2006 and 2010 in China

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Two-dimensional Cr_(2)Cl_(3)S_(3) Janus magnetic semiconductor with large magnetic exchange interaction and high-T_(C)

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Chinese Physics B 2024年第9期33卷 481-485页

作者： Lei Fu Shasha Li Xiangyan Bo sai ma Feng Li Yong Pu School of Science&New Energy Technology Engineering Laboratory of Jiangsu Provence Nanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023China

The two-dimensional(2D)Janus monolayers are promising in spintronic device application due to their enhanced magnetic couplings and Curie *** der Waals CrCl_(3) monolayer has been experimentally proved to have an in-plane magnetic easy axis and a low Curie temperature of 17 K,which will limit its application in spintronic *** this work,we propose a new Janus monolayer Cr_(2)Cl_(3)S_(3) based on the first principles *** phonon dispersion and elastic constants confirm that Janus monolayer Cr_(2)Cl_(3)S_(3) is dynamically and mechanically *** Monte Carlo simulation results based on magnetic exchange constants reveal that Janus monolayer Cr_(2)Cl_(3)S_(3) is an intrinsic ferromagnetic semiconductor with TC of 180 K,which is much higher than that of CrCl_(3) due to the enhanced ferromagnetic coupling caused by S ***,the magnetic easy axis of Janus Cr_(2)Cl_(3)S_(3) can be tuned to the perpendicular direction with a large magnetic anisotropy energy(maE)of 142eV/***,the effect of biaxial strain on the magnetic property of Janus monolayer Cr_(2)Cl_(3)S_(3) is *** is found that the Curie temperature is more robust under tensile *** work indicates that the Janus monolayer Cr_(2)Cl_(3)S_(3) presents increased Curie temperature and out-of-plane magnetic easy axis,suggesting greater application potential in 2D spintronic devices.

关键词： first-principles calculations 2D materials magnetic properties ferromagentic semiconductor

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Canagliflozin Regulates Ferroptosis, Potentially via Activating AMPK/PGC-1α/Nrf2 Signaling in HFpEF Rats

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Cardiovascular Innovations and Applications 2022年第3期7卷 92-101页

作者： sai ma Lili He Qingjuan Zuo Guorui Zhang Yifang Guo Department of Pain Hebei General HospitalShijiazhuang 050051HebeiChina Department of Geriatric Cardiology Hebei General HospitalShijiazhuang 050051HebeiChina Department of Cardiology The Third Hospital of Shijiazhuang City affiliated with Hebei Medical UniversityShijiazhuang 050011HebeiChina

Aims:Sodium-glucose cotransporter-2(SGLT2)inhibitors have been found to ameliorate major adverse cardiovascular events in patients with heart failure with preserved ejection fraction(HFpEF),but the exact mechanism is *** is a form of programmed ***,we verified that canagliflozin(CANA)ameliorates heart function in HFpEF rats,partly by regulating ferroptosis,which may be activated by AMPK/PGC-1α/Nrf2 ***:An HFpEF model was established and subjected to CANA *** pressure was monitored,and echocardiography was performed at the 12th *** examination was performed,and expression of ferroptosis-associated proteins and AMPK/PGC-1α/Nrf2 signaling related proteins was ***:CANA had an antihypertensive effect and increased E/A ratios in HFpEF *** pathology was ameliorated,on the basis of decreased cross-sectional area and intercellular ***-CoA synthetase longchain family member 4(ACSL4)expression increased,whereas ferritin heavy chain 1(FTH1)expression decreased in HFpEF rats,which showed iron *** reversed changes in ACSL4 and FTH1,and decreased iron accumulation,but did not alter glutathione peroxidase 4(GPX4)*** expression of AMPK/PGC-1α/Nrf2 signaling related proteins and heme oxygenase 1(HO-1)in the HFpEF group decreased but was reverted after CANA ***:CANA regulates ferroptosis,potentially via activating AMPK/PGC-1α/Nrf2 signaling in HFpEF rats.

关键词： ferroptosis heart failure SGLT2 inhibitors AMPK

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Changes in peripheral blood inflammatory factors(TNF-α and IL-6) and intestinal flora in AIDS and HIV-positive individuals

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2019年第10期20卷 793-802页

作者： Jing LU sai-sai ma Wei-ying ZHANG Jian-ping DUAN Department of Infectious Disease Qingdao Sixth People’s HospitalQingdao 266033China

Objective:In this study,we investigated the changes in peripheral blood inflammatory factors and intestinal flora in acquired immune deficiency syndrome(AIDS)and human immunodeficiency virus(HIV)-positive individuals(AIDS/HIV patients),and explored the relationships among intestinal flora,peripheral blood inflammatory factors,and CD4^+T ***:Thirty blood and stool samples from an AIDS group and a control group were *** levels of tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)were determined by enzyme-linked immunosorbent assay(ELISA),and the number of CD4^+T lymphocytes by a FACSCount automated *** real-time polymerase chain reaction(qRT-PCR)was used to determine the messenger RNA(mRNA)levels of Bifidobacterium,Lactobacillus,Escherichia coli,Enterococcus faecalis,and Enterococcus *** among intestinal flora,inflammatory factor levels,and CD4^+T lymphocyte values were evaluated using the Spearman correlation ***:The levels of TNF-αand IL-6 in the AIDS group were higher than those in the control group,while the number of CD4^+T lymphocytes was *** amounts of Bifidobacterium and Lactobacillus in the AIDS group were significantly lower than those in control group,while the amounts of ***,***,and *** were much *** amounts of Bifidobacterium and Lactobacillus were negatively correlated with the content of TNF-αand IL-6 and the CD4^+T lymphocyte count,while those correlations were reversed for ***,***,and ***:The intestinal microbiota of AIDS/HIV patients were disordered,and there was a correlation between the amount of intestinal flora and the number of CD4^+T lymphocytes and the levels of TNF-αand IL-6.

关键词： Acquired immune deficiency syndrome(AIDS) Tumor necrosis factor-α(TNF-α) Interleukin-6(IL-6) Intestinal flora CD4^+T lymphocytes

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Improved interfacial adhesion for stable flexible inverted perovskite solar cells

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Journal of Energy Chemistry 2023年第1期76卷 288-294,I0008页

作者： Jie Dou Qizhen Song Yue ma Hao Wang Guizhou Yuan Xueyuan Wei Xiuxiu Niu sai ma Xiaoyan Yang Jing Dou Shaocheng Liu Huanping Zhou Cheng Zhu Yihua Chen Yujing Li Yang Bai Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional materials and Green Applications MIIT Key Laboratory for Low-dimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China School of materials Science and Engineering Peking UniversityBeijing 100871China

Flexible perovskite solar cells have attracted widespread attention due to their unique advantages in lightweight,high flexibility,and easy deformation,which are suitable for portable ***,the inverted(p-i-n)structured devices suffer from poor stability largely due to the low adhesion at the brittle interface(the hole transport layer/perovskite).Herein,zeolitic imidazolate framework-67(ZIF-67)is applied to inverted structured cells to optimize the interface and prolong the device *** a result,the flexible devices based on ZIF-67 obtain the champion power conversion efficiency of 20.16%.Over 1000 h under continuous light irradiation,the device retains 96%and 80%of its original efficiency without and with bias,***,devices show mechanical endurance with over 78%efficiency retention after 10,000 cycles of consecutive bending cycles(R=6 mm).The introduction of ZIF-67 suppresses the cracking in device bending,which results in improved environmental stability and bending durability.

关键词： ZIF-67 Flexible perovskite solar cells Interfacial adhesion Stability

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风速时间序列模拟的模型有效性验证及代表性风场实例分析

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振动与冲击 2019年第15期38卷 73-79页

作者：马赛褚福磊清华大学机械工程系

在风力发电场的合理选址以及风力发电机组的结构设计阶段,能量谱与功率谱模型对于风力发电机组的系统方案有着直接的影响,特别是在具体结构设计阶段选取恰当的功率谱模型是至关重要的,但目前对具体模型的选择依据尚不明确。针对能量谱... 详细信息

在风力发电场的合理选址以及风力发电机组的结构设计阶段,能量谱与功率谱模型对于风力发电机组的系统方案有着直接的影响,特别是在具体结构设计阶段选取恰当的功率谱模型是至关重要的,但目前对具体模型的选择依据尚不明确。针对能量谱与功率谱两种重要的风速数据分析模型,以国内五处地区代表性风场的全年风速测试数据为基础,进行了能量谱与功率谱的分析,从分析结果中得出了如下两个结论:①我国东南沿海地区风场的风力资源最为丰富,其有效风能密度区(200~400 W/m^2)持续时间最长;北部地区风场的风力资源也较为丰富,且在高风能密度区(>500 W/m^2)具有一定优势;对于主要风力资源集中在低风能密度区(mann功率谱模型表现出与各风场实测数据良好的一致性,应该在进行结构设计时作为主要备选。

关键词：风速时间序列能量谱模型功率谱模型模型选择依据

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Tailoring molecular termination for thermally stable perovskite solar cells

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Journal of Semiconductors 2021年第11期42卷 39-47页

作者： Xiao Zhang sai ma Jingbi You Yang Bai Qi Chen Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Experimental Center of Advanced materials School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Semiconductor materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100081China

Interfacial engineering has made an outstanding contribution to the development of high-efficiency perovskite solar cells(PSCs).Here,we introduce an effective interface passivation strategy via methoxysilane molecules with different terminal *** power conversion efficiency(PCE)has increased from 20.97%to 21.97%after introducing a 3-isocyanatopropyltrimethoxy silane(IPTMS)molecule with carbonyl group,while a trimethoxy[3-(phenylamino)propyl]silane(PAPMS)molecule containing aniline group deteriorates the photovoltaic performance as a consequence of decreased open circuit *** improved performance after IPTMS treatment is ascribed to the suppression of non-radiative recombination and enhancement of carrier *** addition,the devices with carbonyl group modification exhibit outstanding thermal stability,which maintain 90%of its initial PCE after 1500 h *** work provides a guideline for the design of passivation molecules aiming to deliver the efficiency and thermal stability simultaneously.

关键词： perovskite solar cells terminal groups interfacial engineering thermal stability

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Effect of total lumbar disc replacement on the treatment of discogenic low lumbar pain： preliminary outcomes

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Chinese Medical Journal 2013年第8期126卷 1504-1508页

作者： LI Zhi-yu HAN Xiao ma sai TIAN Wei Department of Spine Surgery Beijing Jishuitan Hospital Beijing100035 China

Background Lumbar pedicle screw fixation and fusion are major procedures for treating discogenic low back pain （DLBP）. However, due to its advantages of preserving the segmental motion and biomechanical simulation, artificial total lumbar disc replacement （TDR） is increasingly popular. Methods From 2007 to 2010, 68 DLBP patients were enrolled. TDR were performed on 34 patients and the other 34 controls underwent the traditional fixation procedure. Qualitative and quantitative evaluations were followed including the changes in range of motion （ROM） and interpedicle height （IPH） at the posterior intervertebral body of operated level, in 6 and 12 months, and 3 years, postoperatively. Results Qualitative results showed satisfying improvement in the two groups after 6 and 12 months, respectively, and the inter-group differences were significant （P 〉0.05）. The results of ROM and IPH have shown significant differences between the TDR and spinal fusion groups （P 〈0.05）. Conclusion With similar clinical improvements as the traditional spinal fusion method, TDR offered significantly better ROM and intervertebral foramen ***.

关键词： total lumbar disc replacement, discogenic low lumbar pain, range of motion spinal fusion

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