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环境工程学报 2023年第4期17卷 1365-1376页

作者：夏瑜常杰李沅珈王沛申欣宇胡怡然何绪文中国矿业大学(北京)化学与环境工程学院北京100083

城市污水回用是缓解水资源危机的有效措施。反渗透工艺是生产优质再生水的重要方法,但在实际应用过程中,25%~50%的城市污水会转化成反渗透浓水(ROC)。ROC的总氮(TN)、总磷(TP)和硬度离子(Ca2+、Mg2+)质量浓度等指标较高。利用微藻去除... 详细信息

城市污水回用是缓解水资源危机的有效措施。反渗透工艺是生产优质再生水的重要方法,但在实际应用过程中,25%~50%的城市污水会转化成反渗透浓水(ROC)。ROC的总氮(TN)、总磷(TP)和硬度离子(Ca2+、Mg2+)质量浓度等指标较高。利用微藻去除氮、磷和Ca2+、Mg2+是城市污水ROC处理的有效途径之一,且可实现资源回收,但目前对其应用条件的优化研究仍较少。利用微藻Scenedesmus sp. FACHB-1 574处理城市污水ROC,在不同总溶解性固体(TDS)质量浓度(1.35 g·L^(-1)和2.70 g·L^(-1))、光暗时间比(12 h/12 h、16 h/8 h、20 h/4 h、24 h/0 h)、光强(25μmol·m^(-2)·s^(-1)、50μmol·m^(-2)·s^(-1)、100μmol·m^(-2)·s^(-1))和氮磷质量比(107:1、14:1、7:1)的条件下,研究了微藻对污水的处理效果及其生长状况。结果表明,Scenedesmus sp. FACHB-1 574可适应城市污水ROC中TDS质量浓度为2.70 g·L^(-1)的条件;对TN的去除速率随光照时间和光强的增加而增大;氮磷质量比为14:1时微藻对TN的去除速率及微藻生物量等性能均得以强化。在最优处理条件下(光暗时间比20 h/4 h,光强100μmol·m^(-2)·s^(-1),氮磷质量比14:1)处理10 d后,微藻对城市污水ROC中TN和TP去除率分别为92.83%和99.68%,藻密度、质量浓度(干重)、脂质含量分别为23.62×10^(6)cells·mL^(-1)、1.10 g·L^(-1)、34.55%。随着微藻的生长,在无CO_(2)的条件下,废水的pH值从7.5升高到10.7,并可去除52.7%的Ca^(2+)和33.9%的Mg^(2+)。本研究可为微藻在城市污水处理及资源化工艺中的应用提供参考。

关键词：反渗透浓水微藻总溶解性固体光暗时间比光强氮磷质量比 Ca2+ Mg2+

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A novel method based on membrane distillation for treating acid mine drainage: Recovery of water and utilization of iron

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CHEMOSPHERE 2021年 279卷 130605-130605页

作者： Wang, Yuxiang Wang, Jianbing li, Zhongyi Wang, Huijiao He, xuwen Wang, Chunrong China Univ Min & Technol Beijing Sch Chem & Environm Engn Beijing 100083 Peoples R China Beijing Normal Univ High Sch 2 Beijing 100088 Peoples R China

Rapid and highly efficient treatment of acid mine drainage (AMD) is still challenging due to the low pH and high metal concentrations in it. This research focuses on a novel treatment method of AMD using direct contact membrane distillation (DCMD) and photocatalysis to recover water and utilize iron. In the DCMD process without pretreatment, the flux decreased by 93.38%. If pretreated by adding sodium oxalate, scale formation potential was effectively mitigated due to the removal of calcium and complexing of iron. For the treatment of the pretreated AMD (PAMD), 60% of water was recovered in the DCMD process with the flux decrease of 22%. The concentrate obtained from the DCMD process demonstrated high photocatalytic activity in the methylene blue (MB) degradation in an aqueous solution. In addition, the Fe (III)-oxalate complexes in the concentrate were reduced to insoluble Fe (II)-oxalate with visible light irradiation, which could be separated by sedimentation and used as a Fenton catalyst. Hence, this novel method exhibits great advantages on effectively inhibiting DCMD membrane fouling during AMD treatment, producing high-quality distillate with low conductivity, and realizing near zero-discharge of AMD. (C) 2021 Elsevier Ltd. All rights reserved.

关键词： Acid mine drainage Sodium oxalate Direct contact membrane distillation Photocatalysis Iron (III) oxalate complex

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Purines enrich root-associated Pseudomonas and improve wild soybean growth under salt stress

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NATURE COMMUNICATIONS 2024年第1期15卷 3520页

作者： Zheng, Yanfen Cao, xuwen Zhou, Yanan Ma, Siqi Wang, Youqiang li, Zhe Zhao, Donglin Yang, Yanzhe Zhang, Han Meng, Chen Xie, Zhihong Sui, Xiaona Xu, Kangwen li, Yiqiang Zhang, Cheng-Sheng Chinese Acad Agr Sci Tobacco Res Inst Marine Agr Res Ctr Qingdao 266101 Peoples R China Shandong Univ Inst Marine Sci & Technol Qingdao 266200 Peoples R China Shandong Agr Univ Coll Resources & Environm Natl Engn Lab Efficient Utilizat Soil & Fertilizer Tai An 271018 Peoples R China

The root-associated microbiota plays an important role in the response to environmental stress. However, the underlying mechanisms controlling the interaction between salt-stressed plants and microbiota are poorly understood. Here, by focusing on a salt-tolerant plant wild soybean (Glycine soja), we demonstrate that highly conserved microbes dominated by Pseudomonas are enriched in the root and rhizosphere microbiota of salt-stressed plant. Two corresponding Pseudomonas isolates are confirmed to enhance the salt tolerance of wild soybean. Shotgun metagenomic and metatranscriptomic sequencing reveal that motility-associated genes, mainly chemotaxis and flagellar assembly, are significantly enriched and expressed in salt-treated samples. We further find that roots of salt stressed plants secreted purines, especially xanthine, which induce motility of the Pseudomonas isolates. Moreover, exogenous application for xanthine to non-stressed plants results in Pseudomonas enrichment, reproducing the microbiota shift in salt-stressed root. Finally, Pseudomonas mutant analysis shows that the motility related gene cheW is required for chemotaxis toward xanthine and for enhancing plant salt tolerance. Our study proposes that wild soybean recruits beneficial Pseudomonas species by exudating key metabolites (i.e., purine) against salt stress.

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The Driver's Design and Implementation of PCIe High Speed Image Acquisition Card Based on WDF

The Driver's Design and Implementation of PCIe High Speed Im...

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2017 6th International Conference on Advanced Materials and Computer Science(ICAMCS 2017)

作者： Qiang Wu liang Xu xuwen li College of Information and Communication Engineering Faculty of Information TechnologyBeijing University of Technology College of Life Science and Bioengineering Beijing University of Technology

As a common high-speed interface,PCIe interface is very extensive in the field of data *** a development framework of Microsoft,WDF（Windows Driver Foundation）driver model can reduce the difficulty of the *** on the PCIe high-speed image acquisition card which is developed by ourselves,this paper designed a stable and reliable WDF driver for the high data transmission rate in the image acquisition process,and used the memory allocation method in WDF to share buffer with the *** order to enhance the speed of the image acquisition,this paper designed a ring buffer mechanism to ensure the continuity and stability in the image acquisition and transmission process.

关键词： Windows Driver PCIe Bus WDF Model DMA Transmission Ring Buffer

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Arbidol/IFN-a2b therapy for patients with corona virus disease 2019: a retrospective multicenter cohort study

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MICROBES AND INFECTION 2020年第4-5期22卷 200-205页

作者： Xu, Ping Huang, Jianping Fan, Zhao Huang, Wendi Qi, Minghua lin, xuwen Song, Weidong Yi, li Peking Univ Shenzhen Hosp Dept Resp & Crit Care Med Shenzhen 518036 Guangdong Peoples R China Hubei Jianli People Hosp Dept Infect Dis Jingzhou 433300 Hubei Peoples R China Peking Univ Dept Emergency Shenzhen Hosp Shenzhen Guangdong Peoples R China Peking Univ Dept Neurol Shenzhen Hosp 1120 Lianhua Rd Futian Area Shenzhen 518036 Guangdong Peoples R China

The spread of COVID-19 is accelerating. At present, there is no specific antiviral drugs for COVID-19 outbreak. This is a multicenter retrospective cohort study of patients with laboratory-confirmed COVID-19 infection pneumonia from 3 hospitals in Hubei and Guangdong province, 141 adults (aged ≥18 years) without ventilation were included. Combined group patients were given Arbidol and IFN-α2b, monotherapy group patients inhaled IFN-α2b for 10-14 days. Of 141 COVID-19 patients, baseline clinical and laboratory characteristics were similar between combined group and monotherapy group, that 30% of the patients leucocytes counts were below the normal range and 36.4% of the patients experienced lymphocytopenia. The duration of viral RNA of respiratory tract in the monotherapy group was not longer than that in the combined therapy group. There was no significant differences between two groups. The absorption of pneumonia in the combined group was faster than that in the monotherapy group. We inferred that Arbidol/IFN - 2 b therapy can be used as an effective method to improve the COVID-19 pneumonia of mild patients, although it helpless with accelerating the virus clearance. These results should be verified in a larger prospective randomized environment.

关键词： COVID-19 2019-nCoV Pneumonia Arbidol IFN-α2b Treatment RNA

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他莫昔芬辅助治疗的ER阳性乳腺癌患者miR-122、miR-449a检测的临床价值研究

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现代生物医学进展 2024年第23期24卷 4592-4594页

作者：范丽莉许文林彭金娟李丽陶凯江苏大学医学院江苏镇江212013 江苏大学第四附属医院乳腺科江苏镇江212050 江苏大学第四附属医院中心实验室江苏镇江212050

目的:分析他莫昔芬辅助治疗的雌激素受体(ER)阳性乳腺癌患者微小RNA(mi R)-122、mi R-449a检测的临床价值。方法:选择258例ER阳性乳腺癌患者,均接受他莫昔芬辅助治疗。分析血清外泌体mi R-122、mi R-449a表达与患者临床病理特征的关系... 详细信息

目的:分析他莫昔芬辅助治疗的雌激素受体(ER)阳性乳腺癌患者微小RNA(mi R)-122、mi R-449a检测的临床价值。方法:选择258例ER阳性乳腺癌患者,均接受他莫昔芬辅助治疗。分析血清外泌体mi R-122、mi R-449a表达与患者临床病理特征的关系。随访5年,绘制Kaplan-Meier曲线分析生存率,采用多因素Cox回归分析影响因素。结果:组织学分级3级、TNM分期Ⅲ期、腋窝淋巴结转移、Ki-67高表达的ER阳性乳腺癌患者治疗前血清外泌体mi R-122高于组织学分级1-2级、TNM分期Ⅰ/Ⅱ期、无腋窝淋巴结转移、Ki-67低表达,mi R-449a则更低(P<0.05)。mi R-122高表达组中位总生存期(OS)低于mi R-122低表达组(P<0.05);mi R-449a低表达组中位OS低于mi R-449a高表达组(P<0.05);Cox回归分析显示TNM分期为Ⅲ期、Ki-67高表达(≥14%)、mi R-122高表达、mi R-449a低表达是ER阳性乳腺癌患者他莫昔芬辅助治疗预后不良的独立危险因素(P<0.05)。结论:ER阳性乳腺癌患者血清外泌体mi R-122、mi R-449a表达水平与患者组织学分级、TNM分期、腋窝淋巴结转移情况、Ki-67表达等临床病理特征相关,mi R-122高表达、mi R-449a低表达是影响患者5年生存期的独立危险因素,有望成为预测他莫昔芬辅助治疗预后的重要标志物。

关键词： ER阳性乳腺癌他莫昔芬 miR-122 miR-449a 预后

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Investigation of anionic group effects on the shale inhibition performance of fatty acid-based ionic liquids and their inhibition mechanism

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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 2022年第0期636卷 128135-128135页

作者： Jia, Han Wang, Shaoyan Wang, Zhe Wang, Qiang Jia, Haidong Song, lin Qin, xuwen Fan, Fangning li, Zhe Huang, Pan China Univ Petr East China Key Lab Unconvent Oil & Gas Dev Minist Educ Qingdao 266580 Peoples R China China Univ Petr East China Shandong Key Lab Oilfield Chem Sch Petr Engn Qingdao 266580 Peoples R China Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 1H9 Canada

Ionic liquids (ILs) have been introduced as novel high-performance shale inhibitors. The inhibition performance and mechanism of the cation groups in ILs have been widely investigated, whereas the effects of the anionic groups in ILs on the inhibitory capacity have rarely been reported. In this work, a series of fatty acid-based ionic liquids (FAILs) with different anionic groups, methyltrioctylammonium octanoate ([N8881][C8:0]), methyltrioctylammonium laurate ([N8881][C12:0]), and methyltrioctylammonium palmitate ([N8881][C16:0]), were synthesized to evaluate their inhibition ability via the sodium bentonite (Na-Bent) immersion test, the linear swelling test, and the shale hot-rolling recovery test. Compared with the traditional inhibitor KCl (2 wt%), FAIL [N8881][C8:0] showed greater inhibition performance at a much lower concentration (0.1 wt%). The inhibition mechanism of FAILs was further analysed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), zeta potential measurements, and contact angle measurements. It was speculated that the best inhibition ability and thermal stability of [N8881][C8:0] should be attributed to the intensive interaction and the sizematching effect between cationic and anionic groups. The present study provided novel insight into the research and development of high-efficiency shale inhibitors.

关键词： Shale inhibitor Fatty acid-based ionic liquids Size-matching effect Intermolecular interaction Inhibition mechanism

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桂中地区下石炭统寺门组物源特征与岩相古地理分析

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东北石油大学学报 2018年第6期42卷 10-21,121,122页

作者：张矿明范志伟马成宪杨凤李旭文中国石化勘探分公司勘探研究院四川成都610041

在主力勘探领域未明确的背景下,探讨桂中地区下石炭统寺门组砂岩储层物源特征,结合野外剖面和钻井薄片、砂地比和砂砾岩厚度分布、重矿物组合、古流向、地震相等资料,研究桂中地区下石炭统寺门组物源体系及沉积相展布规律。结果表明:桂... 详细信息

在主力勘探领域未明确的背景下,探讨桂中地区下石炭统寺门组砂岩储层物源特征,结合野外剖面和钻井薄片、砂地比和砂砾岩厚度分布、重矿物组合、古流向、地震相等资料,研究桂中地区下石炭统寺门组物源体系及沉积相展布规律。结果表明:桂中地区寺门组可分为3个物源组合区,Ⅰ区主要位于桂中西北部的南丹、环江地区;Ⅱ区主要位于桂中东部柳城、鹿寨地区;Ⅲ区为Ⅰ、Ⅱ区的混源区。母岩主要来源于北部雪峰古陆与东部云开古陆,靠近古陆发育三角洲相沉积,前缘受古地貌、潮汐及波浪影响,形成砂坝或滩。该结果为桂中地区油气勘探评价提供指导。

关键词：寺门组物源特征沉积相下石炭统岩相古地理桂中地区

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南海天然气水合物试采储层热流耦合与温度场调控研究进展

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地质学报 2024年第11期98卷 3213-3224页

作者：秦绪文陆程张召彬王平康李守定董艳辉马超何玉发庞守吉中国自然资源航空物探遥感中心北京100083 中国地质调查局油气资源调查中心北京100083 自然资源部青海木里天然气水合物与冻土环境野外科学观测研究站北京100083 天然气水合物勘查开发国家工程技术研究中心广东广州510075 中国科学院地质与地球物理研究所北京100029 中国地质调查局北京100037 中国地质调查局广州海洋地质调查局广东广州510075 中海油研究总院有限责任公司北京100028

中国南海天然气水合物储层类型以泥质粉砂为主,与其他国家和地区的砂质储层相比开采难度大。本文针对南海北部泥质粉砂天然气水合物降压开采涉及的相变习性演化、有效渗透率变化、热流耦合模式、试采系统温度场调控与矿场尺度增温防冰... 详细信息

中国南海天然气水合物储层类型以泥质粉砂为主,与其他国家和地区的砂质储层相比开采难度大。本文针对南海北部泥质粉砂天然气水合物降压开采涉及的相变习性演化、有效渗透率变化、热流耦合模式、试采系统温度场调控与矿场尺度增温防冰等关键问题,综述了笔者团队近年来取得的最新研究成果。研究表明,泥质粉砂型水合物相变始终处于动态平衡状态,储层因富含黏土水合物相变滞后效应明显;试采井壁处节流膨胀效应强烈,“温度漏斗”斜率最大,一旦形成“水锁”与生成二次水合物,气相渗流能力将明显降低;在无外部热源补给情况下,较高的产气速率,易造成水合物分解速率减缓直至停止分解,中国南海泥质粉砂水合物分解主要受传热控制模式影响,亟需建立有效的“储层-井筒”试采系统多元温压调控与安全流动机制,提高产气效率;依托自然资源部青海木里天然气水合物与冻土环境野外科学观测研究站,利用原位补热降压充填的水合物开采方法,成功完成矿场尺度水合物试采系统温度场改造试验,进一步优化提高了储层渗流能力,实现了增渗扩产目的。

关键词：泥质粉砂试采系统相变习性热流耦合温度场改造

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水对盐胁迫下种子引发的缓解效应

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武夷学院学报 2024年第3期43卷 9-13页

作者：刘贺李焰焰聂传朋江绪文福建农林大学园艺学院福建福州350002 武夷学院茶与食品学院福建武夷山354300 青岛农业大学农学院山东青岛266109

盐胁迫会影响种子的萌发以及后期产量的形成,研究如何经济有效地缓解盐胁迫的危害对于提高作物的产量与品质起着具有非常重要的作用。以鲁麦21和济南17两个小麦品种为例,以水作为引发剂对小麦种子进行引发处理,设置对比不同引发时间,和... 详细信息

盐胁迫会影响种子的萌发以及后期产量的形成,研究如何经济有效地缓解盐胁迫的危害对于提高作物的产量与品质起着具有非常重要的作用。以鲁麦21和济南17两个小麦品种为例,以水作为引发剂对小麦种子进行引发处理,设置对比不同引发时间,和保湿时间这两个影响因素,形成不同条件的处理组合。通过对幼苗进行测定与分析,探索在哪种引发处理条件下小麦有更好的抵抗盐胁迫的能力。结果表明:适宜的水引发处理可以明显提高盐胁迫下小麦种子活力。对于鲁麦21,和济南17这两个品种来说,在水引发10 min,结合保湿12 h时具有较好的缓解盐胁迫效果。

关键词：小麦种子盐胁迫萌发及产量缓解效应

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