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Evaluation of flue gas desulfurization gypsum as a low-cost precipitant for phosphorus removal from anaerobic digestion effluent filtrate

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 198-206页

作者： Yaping Guo Adam Khalaf Wenzhuo Kong Hongzhen Ma Jiawei Liang Dongxu zhao Zhiguo Wang Yebo Li Fuqing Xu Technology Innovation Center for Land Engineering and Human Settlements Shaanxi Land Engineering Construction Group Co.Ltd and Xi’an Jiaotong UniversitySchool of Human Settlements and Civil EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of Food Agriculturaland Biological Engineeringthe Ohio State UniversityColumbusOH 44691USA Shaanxi Environmental Survey and Assessment Center Xi’an 710054China

Land application of anaerobic digestion(AD)effluent as a fertilizer is desirable for nutrient recycling,but often supplies excess phosphorus(P),which contributes to surface water *** the P content in AD effluent filtrate using calcium(Ca)treatment prior to land application is a potential strategy for improving effluent disposal and meeting the discharge *** study took flue gas desulphurization(FGD)gypsum,a by-product of coal-fired power plants,as a low-cost Ca source,and combined with traditional phosphorus removal agents to achieve high phosphorus removal efficiency with less chemical *** the results showed,FGD gypsum dosages of 20 mmol/L Ca(3.44 g/L)and 40 mmol/L Ca(6.89 g/L)removed up to 97.1%of soluble P(initially 102.8 mg/L)within 60-90 *** FGD gypsum treatment with traditional chemical treatments using calcium hydroxide[Ca(OH)2]or ferric chloride(FeCl3)could achieve>99%P removal with reduced chemical *** study demonstrated that FGD gypsum is an efficient calcium-based precipitant for phosphorus removal,offering a cost-effective and sustainable approach to enhance wastewater treatment practices and meet discharge standards in wastewater management.

关键词： flue gas desulfurization gypsum anaerobic digestion effluent precipitation phosphorus removal eutrophication

基于小震经验格林函数研究中等地震破裂方向性:以2008年攀枝花M_(S)6.1地震为例

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地球物理学报 2024年第1期67卷 144-155页

作者：罗艳赵里朱音杰中国地震局地震预测研究所地震预测重点实验室北京100036 北京大学地球与空间科学学院北京100871 河北省地震局石家庄050021

中小地震破裂方向性研究在确定实际发震面以及地震灾害评估中具有非常重要的意义.本文以2008年8月30日攀枝花M_(S)6.1地震为研究实例,以较小余震作为经验格林函数地震,利用表观震源时间函数随台站方位角变化特性,确定了主震的破裂方向... 详细信息

中小地震破裂方向性研究在确定实际发震面以及地震灾害评估中具有非常重要的意义.本文以2008年8月30日攀枝花M_(S)6.1地震为研究实例,以较小余震作为经验格林函数地震,利用表观震源时间函数随台站方位角变化特性,确定了主震的破裂方向、破裂尺度以及破裂速度,验证了该方法的适用性和可行性.研究结果表明,主震的破裂方向为几乎正南的184°,破裂长度8.05 km,破裂速度3.35 km·s^(-1),进一步确认了主震震源机制解其中沿南北向的节面是地震实际发震面,主震在水平方向沿着南北向元谋断裂从北往南破裂.攀枝花地震震源破裂速度接近地壳剪切波速度,这可能是造成此次地震虽然震级不大但破坏性严重的重要原因.本文综合分析主震的矩心深度、震源机制解、破裂方向性以及构造应力背景等信息,探讨了地震发生的破裂过程以及灾害严重的原因.

关键词：中等地震破裂方向性经验格林函数 2008年攀枝花地震

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烧结钕铁硼基底成分对晶界扩散效果的影响研究

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稀有金属材料与工程 2024年第3期53卷 841-847页

作者：陈侃赵红良范逢春宁波同创强磁材料有限公司浙江宁波315001

晶界扩散作为一种能明显提升烧结钕铁硼磁体矫顽力同时实现对重稀土高质化利用的方法,日益成为目前稀土永磁学界和产业界的研究热点。利用自动化喷涂设备系统研究了晶界扩散烧结磁体批量制备过程中基底成分差异对晶界扩散后磁体磁性能... 详细信息

晶界扩散作为一种能明显提升烧结钕铁硼磁体矫顽力同时实现对重稀土高质化利用的方法,日益成为目前稀土永磁学界和产业界的研究热点。利用自动化喷涂设备系统研究了晶界扩散烧结磁体批量制备过程中基底成分差异对晶界扩散后磁体磁性能的影响。微观结构和EDX元素分析结果表明:晶界扩散后磁体矫顽力增长幅度的差异,同扩散后磁体内晶粒核壳结构形成充分与否、晶界相均匀分布与否和晶界相铁磁性元素含量高低有密切关联,同时利用晶界扩散工艺制备得到的磁体温度系数要优于传统工艺制备得到的相近似牌号的磁体。

关键词：烧结钕铁硼磁体晶界扩散工艺磁性能

Boosting photocatalytic water vapor splitting by the integration of porous g-C_(3)N_(4)and carbonized melamine foam

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Science China Materials 2024年第9期67卷 2957-2964页

作者： Shujian Wang Dongjie Liu Chunyang Zhang Jie Huang Shidong zhao kejian Lu Biao Wang Hao Peng Yitao Si Maochang Liu International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical Engineering Southeast UniversityNanjing211189China Suzhou Academy of Xi’an Jiaotong University Suzhou215123China Gree Altairnano New Energy Inc. Zhuhai519040China

We report a photothermally-induced liquid-solid/gas-solid-decoupling photocatalytic water-splitting system,where a carbonized melamine foam(CMF)and a porous g-C_(3)N_(4)(PCN)serve as the photothermal substrate and model photocatalyst,***,liquid water is transformed into the gaseous phase over the CMF due to the photothermal effect,and the generated vapor can be split into hydrogen by PCN via the *** unique biphasic photocatalytic system exhibits a high hydrogen production rate of 368.1µmol h^(-1),which is 2.4 and 25.6 times larger than those of the traditional triphasic PCN system(151.7µmol h^(-1))and g-C_(3)N_(4)(CN)system(14.4µmol h^(-1)),*** improved photocatalytic performance is mainly attributed to the optimized energy and mass transfer at the gas-liquid-solid reaction interface,where gas products are rapidly desorbed in the photocatalytic *** work provides a novel strategy to enhance the photocatalytic performance from the perspectives of energy and mass flow.

关键词： photocatalytic photothermal mass transfer g-C_(3)N_(4) gas-solid

Efficacy of short-term multidisciplinary intensive rehabilitation in patients with different Parkinson's disease motor subtypes: a prospective pilot study with 3-month follow-up

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Neural Regeneration Research 2021年第7期16卷 1336-1343页

作者： ke-ke Chen zhao-Hui Jin Lei Gao Lin Qi Qiao-Xia Zhen Cui Liu Ping Wang Yong-Hong Liu Rui-Dan Wang Yan-Jun Liu Jin-Ping Fang Yuan Su Xiao-Yan Yan Ai-Xian Liu Bo-Yan Fang Beijing Rehabilitation Medical College Capital Medical UniversityBeijingChina Parkinson Medical Center Beijing Rehabilitation HospitalCapital Medical UniversityBeijingChina Peking University Clinical Research Institute BeijingChina

Parkinson's disease(PD) can be classified into three motor-based subtypes: postural instability/gait difficulty(PIGD), tremor dominant(TD), and *** neuropathophysiological mechanisms of the three motor subtypes are different, which may lead to different responses to ***-nine patients with idiopathic Parkinson's disease(Hoehn–Yahr stage ≤ 3) were screened from 436 patients with Parkinsonism recruited through outpatient services and the *** to the Movement Disorder Society Unified Parkinson's Disease Rating Scale(MDS-UPDRS) TD/PIGD ratio, the patients were divided into PIGD(TD/PIGD ≤ 0.09;n = 36), TD(TD/PIGD ≥1.15;n = 19), and indeterminate(TD/PIGD = 0.90–1.15;n = 14) *** patients received 2 weeks of multidisciplinary intensive rehabilitation treatment(MIRT) during hospitalization, as well as a remote home rehabilitation health education *** with the scores at admission, all patients showed significant improvements in their MDS-UPDRS III score, walking ability, balance, and posture control at ***, the MDS-UPDRS III score improvement was greater in the PIGD group than in the TD *** follow-up data, collected for 3 months after discharge, showed that overall symptom improvement in each group was maintained for 1–3 ***, there were no significant differences in the duration or grade effects of symptom improvement among the three *** findings suggest that 2 weeks of MIRT is effective for improving motor performance in all three motor *** in the PIGD group had a better response after hospitalization than those in the TD *** study was approved by the Institutional Ethics Committee of Beijing Rehabilitation Hospital of Capital Medical University of China(approval No.2018 bkky022) on May 7, 2018 and registered with the Chinese Clinical Trial Registry(registration *** CTR1900020771) on January 19, 2019.

关键词： balance gait motor neurodegeneration Parkinson's disease posture rehabilitation tremor

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非封闭式热斗篷热防护特性

物理学报 2024年第3期73卷 43-49页

作者：苗钰钊唐桂华西安交通大学能源与动力工程学院热流科学与工程教育部重点实验室西安710049

高超声速飞行器在飞行过程中产生大量气动热,高效的热防护技术对保证其正常工作具有重要意义.本文基于热超材料调控热流传播路径思想,针对高超声速飞行器头锥,采用坐标变换法设计非封闭式点变换热斗篷及简化近似的多层结构.COMSOL数值... 详细信息

高超声速飞行器在飞行过程中产生大量气动热,高效的热防护技术对保证其正常工作具有重要意义.本文基于热超材料调控热流传播路径思想,针对高超声速飞行器头锥,采用坐标变换法设计非封闭式点变换热斗篷及简化近似的多层结构.COMSOL数值模拟研究表明,两种结构均有效实现导热和辐射热流的热绕流,使部分热量沿头锥表面传播,头锥前端温度显著降低,机体升温速率减缓.但其热防护性能的提升要求材料固相和辐射热导率低于原隔热材料.进一步设计了非封闭式域变换热斗篷,材料固相和辐射热导率均可高于原隔热材料.模拟结果表明,热绕流显著提升了域变换热斗篷的热防护能力,相比于纯隔热材料,头锥前端温度降低达100 K,机体降温达10 K,展现出重要的热防护应用潜力.

关键词：热超材料坐标变换 COMSOL 热防护

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Cisplatin-appended BODIPY for near infraredⅡfluorescent and photoacoustic imaging-guided synergistic phototherapy and chemotherapy of cancer

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Chinese Chemical Letters 2024年第3期35卷 352-357页

作者： Xuejian Xing E Pang Shaojing zhao Tangna Pan Qiuxia Tan Benhua Wang Xiangzhi Song Minhuan Lan key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China

Combining phototherapy and chemotherapy has been considered a promising modality for cancer therapy due to their synergistic ***,we developed three D-π-A-structured boron dipyrromethenes(BODIPYs)(named as B-B,B-C,and B-C-Pt).Due to their enlargedπ-conjugated structure and high intramolecular charge transfer effect,the synthesized BODIPYs had photothermal conversion capability,and their absorption and fluorescence spectra were *** cisplatin-appended BODIPY(B-C-Pt)exhibited good singlet oxygen(^1O_(2))generation ability and near infrared(NIR)absorption and fluorescence(λ_(Abs)=748 nm,λ_(Em)=947 nm).After being encapsulated by distearoyl phosphoethanolamine polyethyleneglycol 2000(DSPE-PEG-2000),which could inhibit the H-aggregation of B-C-Pt,the absorption and fluorescence of the obtained B-C-Pt nanoparticles(NPs)were red-shifted to 762 and 985 nm,***^1O_(2)quantum yield and photothermal conversion efficiency of the B-C-Pt NPs were 4.0%and 40.6%,***,B-C-Pt NPs had chemotherapeutic efficacy due to the presence of *** vitro and in vivo studies further demonstrated that B-C-Pt NPs had synergistic therapeutic ***,B-C-Pt NPs could be employed in NIRⅡfluorescent and photoacoustic imaging-guided synergistic phototherapy and chemotherapy for cancer treatment.

关键词： Phototherapy Chemotherapy Cisplatin Bodipy NIRⅡfluorescent imaging

当归黄芪超滤物通过调控ROS/GSH/GPx4轴抑制铁死亡改善放射性大鼠心肌纤维化

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中国药理学通报 2024年第4期40卷 723-730页

作者：任春贞陈其林张启立吕欣芳支晓东高翔吴雪李晓静刘凯赵信科李应东甘肃中医药大学中西医结合学院甘肃兰州730000 甘肃省中医药防治慢性病重点实验室甘肃兰州730000 甘肃中医药大学附属医院甘肃兰州730000 甘肃中医药大学药学院甘肃兰州730000

目的探讨ROS/GSH/GPx4轴介导的心肌铁死亡在放射性心肌纤维化中的作用机制及当归黄芪超滤物的干预作用。方法50只大鼠随机分为5组。除空白组外,其余各组大鼠均接受X射线单次局部胸部照射建立放射性心肌纤维化模型。辐射后,当归黄芪超滤... 详细信息

目的探讨ROS/GSH/GPx4轴介导的心肌铁死亡在放射性心肌纤维化中的作用机制及当归黄芪超滤物的干预作用。方法50只大鼠随机分为5组。除空白组外,其余各组大鼠均接受X射线单次局部胸部照射建立放射性心肌纤维化模型。辐射后,当归黄芪超滤物各组大鼠分别灌胃给药30 d后,用小动物超声评价心功能;比色法检测SOD、GSH、MDA及Fe^(2+)活性;免疫荧光检测ROS表达;HE、Masson染色观察病理变化及纤维化;透射电镜观察心肌超微结构;Western blot检测铁死亡及纤维化蛋白表达。结果与空白组比较,模型组LVEF和LVFS值降低;Fe^(2+)、MDA、ROS水平上升,SOD、GSH水平下降;HE及Masson显示有炎性细胞聚集及胶原纤维沉积;透射电镜显示受损线粒体数量增多、排列紊乱,形态不规则、变小、嵴紊乱;Western blot显示α-SMA、Collagen I、NOX1蛋白表达升高,GPx4、FTH1蛋白表达降低;与模型组比较,当归黄芪超滤物组大鼠心功能改善,ROS、抗氧化指标恢复,Fe^(2+)水平降低;线粒体结构及纤维化程度减轻;α-SMA、Collagen I、NOX1蛋白表达下降,GPx4、FTH1蛋白表达上升。结论当归黄芪超滤物对放射性心肌纤维化具有抑制作用,其机制可能是通过调控ROS/GSH/GPx4轴抑制心肌铁死亡发挥作用。

关键词：当归黄芪超滤物放射性心肌纤维化铁死亡氧化应激 ROS/GSH/GPx4轴抗心肌纤维化

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火星水资源探测、开采及原位利用研究进展

华中科技大学学报（自然科学版） 2024年第8期52卷 29-40页

作者：赵健楠赵源张诗琪肖龙中国地质大学(武汉)地质探测与评估教育部重点实验室湖北武汉430074 中国地质大学(武汉)地球科学学院湖北武汉430074

针对未来火星基地建设和资源利用的需求,综述了火星水资源探测、开采及原位利用的研究进展.首先,系统回顾了影像和光谱数据分析、雷达探测等火星水资源的探测方式;然后,分析了包括大气水资源、极区和中高纬度地下水冰资源及含水矿物水... 详细信息

针对未来火星基地建设和资源利用的需求,综述了火星水资源探测、开采及原位利用的研究进展.首先,系统回顾了影像和光谱数据分析、雷达探测等火星水资源的探测方式;然后,分析了包括大气水资源、极区和中高纬度地下水冰资源及含水矿物水资源在内的火星可利用水资源的赋存状况;此外,探讨了不同类型的水资源的提取和开采技术及原位利用途径.在此基础上,分析了当前存在的主要问题,建议对火星水资源的分布和储量开展进一步勘查,加强水资源开采过程的系统规划,并对具体选址区开展水资源开采利用的针对性研究.本文将为我国未来载人火星探测及火星科研站建设任务提供参考.

关键词：火星原位资源利用水资源火星基地载人探测