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添加好氧污泥促进猪场废水浓稀分离

环境科学与技术 2021年第10期44卷 137-143页

作者：唐宇轩邓良伟农业农村部沼气科学研究所四川成都610000

文章考察了添加好氧污泥对猪场废水浓稀分离效率的影响,试验了浓稀分离产物厌氧消化产沼气潜力,并对猪场废水的处理工艺成本进行了分析。结果表明:(1)添加好氧污泥可以使COD去除率从44.0%提升到57.3%,COD回收率从43.9%提升到60.4%,COD... 详细信息

文章考察了添加好氧污泥对猪场废水浓稀分离效率的影响,试验了浓稀分离产物厌氧消化产沼气潜力,并对猪场废水的处理工艺成本进行了分析。结果表明:(1)添加好氧污泥可以使COD去除率从44.0%提升到57.3%,COD回收率从43.9%提升到60.4%,COD分离因子从0.278提升到0.343。(2)没有添加污泥的对照组中,浓污水原料产气率为原污水的1.30倍;而添加污泥的处理组中,浓污水原料产气率为原污水的1.31倍,说明添加污泥对原料产气率没有影响。(3)虽然添加好氧污泥会导致浓污水体积增加,对厌氧消化升温不利,但可以使沼气产量至少提高17.3%。(4)添加污泥的新工艺比基于浓稀分离的厌氧-好氧处理工艺投资成本增加约2%。但是新工艺沼气产量更高,而且可以处理好氧污泥,运行费用降低了41.6%,大约0.71年就可以收回增加的投入。

关键词：猪场废水浓稀分离厌氧消化

抗阻运动改善老年骨质疏松性骨折患者健康结局的Meta分析

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中华护理杂志 2023年第10期58卷 1238-1244页

作者：汤昱暄梁小芹于明明北京大学护理学院北京市100191 北京积水潭医院创伤骨科北京市100191

目的系统评价抗阻运动对老年骨质疏松性骨折患者不同健康结局的改善效果。方法计算机检索PubMed、Embase、Cochrane Library、Web of Science、CINAHL Plus、中国知网和万方数据库从建库至2022年9月1日发表的随机对照临床试验,采用随... 详细信息

目的系统评价抗阻运动对老年骨质疏松性骨折患者不同健康结局的改善效果。方法计算机检索PubMed、Embase、Cochrane Library、Web of Science、CINAHL Plus、中国知网和万方数据库从建库至2022年9月1日发表的随机对照临床试验,采用随机对照试验偏倚风险评估工具2.0(version 2.0 of the Cochrane tool for assessing risk of bias in randomized trial,RoB 2.0)对纳入研究进行质量评价,使用元分析V3软件进行Meta分析。结果纳入15项随机对照研究,共1 055例患者。Meta分析显示,抗阻运动可以有效改善老年骨质疏松性骨折患者的肌肉力量[SMD=0.746, 95%CI (0.152,1.339),P=0.014]、平衡能力[SMD=0.439,95%CI (0.086,0.792),P=0.015]和移动能力[SMD=0.240,95%CI(0.074,0.407),P=0.005];在行走速度测试方面的差异无统计学意义[SMD=0.203,95%CI(-0.008,0.415),P=0.059]。结论抗阻运动能够有效提高老年骨质疏松性骨折患者肌肉力量、总体平衡能力和移动能力。在进行抗阻训练时,护理人员应针对患者的身体情况给予科学、高效的抗阻运动康复建议,指导患者完成运动计划,确保患者安全的同时促进患者健康结局的改善。

关键词：骨质疏松性骨折老年人抗阻运动 Meta分析循证护理学

Double-ended passivator enables dark-current-suppressed colloidal quantum dot photodiodes for CMOS-integrated infrared imagers

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InfoMat 2024年第1期6卷 108-122页

作者： Peilin Liu Shuaicheng Lu Jing Liu Bing Xia Gaoyuan Yang Mo Ke Xuezhi Zhao Junrui Yang yuxuan Liu Ciyu Ge Guijie Liang Wei Chen Xinzheng Lan Jianbing Zhang Liang Gao Jiang tang Wuhan National Laboratory for Optoelectronics(WNLO)and School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhanthe People's Republic of China Wenzhou Advanced Manufacturing Technology Institute Huazhong University of Science and TechnologyWenzhouthe People's Republic of China School of Physics and Electronic Engineering Hubei University of Arts and ScienceXiangyangthe People's Republic of China School of Integrated Circuits Huazhong University of Science and TechnologyWuhanthe People's Republic of China School of Engineering Physics Shenzhen Technology UniversityShenzhenthe People's Republic of China Optics Valley Laboratory Wuhanthe People's Republic of China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhenthe People's Republic of China

Lead sulfide(PbS)colloidal quantum dot(CQD)photodiodes integrated with silicon-based readout integrated circuits(ROICs)offer a promising solution for the next-generation short-wave infrared(SWIR)imaging *** their potential,large-size CQD photodiodes pose a challenge due to high dark currents resulting from surface states on nonpassivated(100)facets and trap states generated by CQD *** this work,we present a novel approach to address this issue by introducing double-ended ligands that supplementally passivate(100)facets of halidecapped large-size CQDs,leading to suppressed bandtail states and reduced defect *** results demonstrate that the dark current density is highly suppressed by about an order of magnitude to 9.6 nA cm^(2) at -10 mV,which is among the lowest reported for PbS CQD ***,the performance of the photodiodes is exemplary,yielding an external quantum efficiency of 50.8%(which corresponds to a responsivity of 0.532 A W^(-1))and a specific detectivity of 2.5×10^(12) Jones at 1300 *** integrating CQD photodiodes with CMOS ROICs,the CQD imager provides high-resolution(640×512)SWIR imaging for infrared penetration and material discrimination.

关键词： CMOS integration colloidal quantum dots dark current suppression double-ended passivation infrared imager

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“一带一路”背景下的新型全球化格局

政治经济学评论 2018年第3期9卷 201-217页

作者：张辉易天唐毓璇北京大学经济学院

现阶段,"一带一路"作为重要的对外开放政策,是中国主动作为参与构建的国际经济合作共赢平台。不同于以往的合作平台,"一带一路"是由世界上最大的发展中国家主动倡议的,这一国际合作平台的提出,一方面是基于中国经济的性质与发展阶段;另... 详细信息

现阶段,"一带一路"作为重要的对外开放政策,是中国主动作为参与构建的国际经济合作共赢平台。不同于以往的合作平台,"一带一路"是由世界上最大的发展中国家主动倡议的,这一国际合作平台的提出,一方面是基于中国经济的性质与发展阶段;另一方面也是基于特殊的国际经济背景,具有历史必然性。"一带一路"的提出将推动经济全球化进程,引领全球化形成新的发展格局。同时,改革开放以来,中国经济实现了长时间、高速度的增长,在这一过程中,积累了诸多方面的发展经验。在新型全球化格局中,沿线的国家和地区可以借鉴中国发展过程中积累的工业化、基础设施建设、城镇化等方面的经验,获得经济发展的新思路与新契机。

关键词： “一带一路” “一带一路”沿线国家和地区新型全球化

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“去杠杆”政策与企业创新:来自广义双重差分的证据

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商业经济与管理 2023年第5期 43-60页

作者：王桂军张辉唐毓璇北京理工大学人文与社会科学学院北京100081 北京大学经济学院北京100871 上海对外经贸大学国际发展合作研究院上海200336

为防范杠杆率过高对企业高质量发展的不良影响,中央政府于2016年出台了《国务院关于积极稳妥降低企业杠杆率的意见》。以此为准自然实验利用广义双重差分法检验“去杠杆”政策对企业创新的影响,研究发现:第一,“去杠杆”政策显著地促进... 详细信息

为防范杠杆率过高对企业高质量发展的不良影响,中央政府于2016年出台了《国务院关于积极稳妥降低企业杠杆率的意见》。以此为准自然实验利用广义双重差分法检验“去杠杆”政策对企业创新的影响,研究发现:第一,“去杠杆”政策显著地促进了以专利产出为表征的企业创新;第二,“去杠杆”政策对企业创新的促进效应可以通过提高经营绩效和优化债务结构实现;第三,“去杠杆”政策同时促进了国有企业和非国有企业创新,但促进国有企业创新只能通过优化债务结构实现,而促进非国有企业创新则可同时通过提高经营绩效和优化债务结构实现。以上研究结论不仅从创新视角支持了供给侧结构性改革的成效,而且丰富了杠杆率影响企业创新的机制研究。

关键词： “去杠杆”政策企业创新经营绩效债务结构广义双重差分

用Hirota双线性导数变换求MNLS方程的Rogue波解

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数学物理学报（A辑） 2023年第1期43卷 132-142页

作者：唐宇轩周国全武汉大学物理科学与技术学院武汉430072

修正的非线性薛定谔方程(MNLS方程)与导数非线性薛定谔方程(DNLS方程)是两个紧密相关且完全可积的非线性偏微分方程.该文通过Hirota双线性导数变换方法,首先求得MNLS方程在平面简谐波背景下的空间周期解,即Akhmediev型呼吸子解,再通过... 详细信息

修正的非线性薛定谔方程(MNLS方程)与导数非线性薛定谔方程(DNLS方程)是两个紧密相关且完全可积的非线性偏微分方程.该文通过Hirota双线性导数变换方法,首先求得MNLS方程在平面简谐波背景下的空间周期解,即Akhmediev型呼吸子解,再通过长波极限得其Rogue波解.根据简单的参数归零法使之自然地约化为DNLS方程的Rogue波解,并借助于一个积分变换将其变换为Chen-Lee-Liu方程的Rogue波解.文章还简要讨论了MNLS方程和DNLS方程在非局域情形整体解的存在性问题.

关键词： Rogue wave MNLS方程 DNLS方程 Hirota双线性导数变换空间周期解呼吸子解

脱硝催化剂碱(土)金属中毒机制及抗中毒方法研究进展

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能源环境保护 2024年第4期38卷 88-100页

作者：汤雨萱王凯欣王雨禾刘彩霞王贺王天昊李志勇杨文娟陈艳国张亚威李海波刘庆岭天津大学环境科学与工程学院天津300350 天津泰达环保有限公司天津300457

氮氧化物作为多种燃烧过程的副产物,长期以来对环境和人类健康产生了不利影响。为了从源头上减少氮氧化物的排放,选择性催化还原(SCR)脱硝技术因其高效成熟的技术特性而被广泛应用。然而,在燃烧过程中产生的碱金属和碱土金属会对SCR催... 详细信息

氮氧化物作为多种燃烧过程的副产物,长期以来对环境和人类健康产生了不利影响。为了从源头上减少氮氧化物的排放,选择性催化还原(SCR)脱硝技术因其高效成熟的技术特性而被广泛应用。然而,在燃烧过程中产生的碱金属和碱土金属会对SCR催化剂产生不利影响,导致脱硝性能下降。因此,深入研究碱金属对SCR催化剂的中毒机理和抗中毒策略对于延长催化剂的使用寿命并降低运行成本至关重要。系统梳理了碱金属对多种SCR催化剂中毒的机理,并总结出碱金属主要通过化学中毒和物理中毒过程影响催化剂的性能。同时,概述了提升SCR催化剂的抗碱金属中毒能力的相关研究进展,包括催化剂改性、合理设计催化剂结构以及有效利用催化剂载体等方法。在综合考虑催化剂实际应用场景的基础上,阐释了烟气中碱金属与SO_(2)、重金属等成分对催化剂的共同毒害影响,并展望了催化剂的协同抗性研究。

关键词：脱硝催化剂氮氧化物选择性催化还脱硝抗碱金属中毒抗碱土金属中毒

DEAD-box helicase 17(DDX17)protects cardiac function by promoting mitochondrial homeostasis in heart failure

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2774-2790页

作者： Mingjing Yan Junpeng Gao Ming Lan Que Wang Yuan Cao yuxuan Zheng Yao Yang Wenlin Li Xiaoxue Yu Xiuqing Huang Lin Dou Bing Liu Junmeng Liu Hongqiang Cheng Kunfu Ouyang Kun Xu Shenghui Sun Jin Liu Weiqing tang Xiyue Zhang Yong Man Liang Sun Jianping Cai Qing He Fuchou tang Jian Li Tao Shen The Key Laboratory of Geriatrics Beijing Institute of GeriatricsInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing Hospital/National Center of Gerontology of National Health CommissionBeijing 100730China Peking University Fifth School of Clinical Medicine Beijing 100730China Department of Laboratory Medicine Huashan HospitalShanghai Medical CollegeFudan UniversityShanghai 200040China Biomedical Pioneering Innovation Center School of Life SciencesPeking UniversityBeijing 100871China Emergency Center Zhongnan Hospital of Wuhan UniversityWuhan 430071China Department of Cardiology Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Graduate School of Peking Union Medical College Beijing 100730China Department of Health Care Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing 100730China Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Department of Pathology and Pathophysiology and Department of Cardiology at Sir Run Run Shaw Hospital Zhejiang University School of MedicineHangzhou 310058China Department of Cardiovascular Surgery Peking University Shenzhen HospitalShenzhen 518036China Experimental Technology Center for Life Sciences at Beijing Normal University Beijing 100875China

DEAD-box helicase 17(DDX17)is a typical member of the DEAD-box family with transcriptional cofactor *** DDX17 is abundantly expressed in the myocardium,its role in heart is not fully *** generated cardiomyocyte-specific Ddx17-knockout mice(Ddx17-cKO),cardiomyocyte-specific Ddx17 transgenic mice(Ddx17-Tg),and various models of cardiomyocyte injury and heart failure(HF).DDX17 is downregulated in the myocardium of mouse models of heart failure and cardiomyocyte ***-specific knockout of Ddx17 promotes autophagic flux blockage and cardiomyocyte apoptosis,leading to progressive cardiac dysfunction,maladaptive remodeling and progression to heart *** of DDX17 expression in cardiomyocytes protects cardiac function under pathological *** studies showed that DDX17 can bind to the transcriptional repressor B-cell lymphoma 6(BCL6)and inhibit the expression of dynamin-related protein 1(DRP1).When DDX17 expression is reduced,transcriptional repression of BCL6 is attenuated,leading to increased DRP1 expression and mitochondrial fission,which in turn leads to impaired mitochondrial homeostasis and heart *** also investigated the correlation of DDX17 expression with cardiac function and DRP1 expression in myocardial biopsy samples from patients with heart *** findings suggest that DDX17 protects cardiac function by promoting mitochondrial homeostasis through the BCL6-DRP1 pathway in heart failure.

关键词： DDX17 homeostasis cardiac

A CRISPR/Cas12a-empowered surface plasmon resonance platform for rapid and specific diagnosis of the Omicron variant of SARS-CoV-2

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National Science Review 2022年第8期9卷 100-109页

作者： Zhi Chen Jingfeng Li Tianzhong Li Taojian Fan Changle Meng Chaozhou Li Jianlong Kang Luxiao Chai Yabin Hao yuxuan tang Omar A.Al-Hartomy Swelm Wageh Abdullah G.Al-Sehemi Zhiguang Luo Jiangtian Yu Yonghong Shao Defa Li Shuai Feng William J.Liu Yaqing He Xiaopeng Ma Zhongjian Xie Han Zhang Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education 3. Shenzhen Institute of Translational Medicine 4. Department of Otolaryngology Shenzhen Second People’s Hospital 5. the First Affiliated Hospital 6. Institute of Microscale Optoelectronics Shenzhen University 7. Shenzhen International Institute for Biomedical Research 8. Shenzhen Han’s Tech Limited Company 9. Shenzhen Metasensing Tech Limited Company Department of Physics Faculty of Science King Abdulaziz University Research Center for Advanced Materials Science (RCAMS) King Khalid University Department of Chemistry College of Science King Khalid University Zhongmin (Shenzhen) Intelligent Ecology Co.Ltd Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Department of Laboratory Medicine Shenzhen Children’s Hospital Optoelectronics Research Center School of Science Minzu University of China NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention Research Unit of Adaptive Evolution and Control of Emerging Viruses Chinese Academy of Medical Sciences Institute of Pathogenic Organism Shenzhen Center for Disease Control and Prevention Respiratory Department Shenzhen Children’s Hospital Institute of Pediatrics Shenzhen Children’s Hospital

The outbreak of the COVID-19 pandemic was partially due to the challenge of identifying asymptomatic and presymptomatic carriers of the virus, and thus highlights a strong motivation for diagnostics with high sensitivity that can be rapidly deployed. On the other hand, several concerning SARS-Co V-2 variants,including Omicron, are required to be identified as soon as the samples are identified as ‘positive’.Unfortunately, a traditional PCR test does not allow their specific identification. Herein, for the first time,we have developed MOPCS(Methodologies of Photonic CRISPR Sensing), which combines an optical sensing technology-surface plasmon resonance(SPR) with the ‘gene scissors’ clustered regularly interspaced short palindromic repeat(CRISPR) technique to achieve both high sensitivity and specificity when it comes to measurement of viral variants. MOPCS is a low-cost, CRISPR/Cas12a-systemempowered SPR gene-detecting platform that can analyze viral RNA, without the need for amplification,within 38 min from sample input to results output, and achieve a limit of detection of 15 fM. MOPCS achieves a highly sensitive analysis of SARS-Co V-2, and mutations appear in variants B.1.617.2(Delta),B.1.1.529(Omicron) and BA.1(a subtype of Omicron). This platform was also used to analyze some recently collected patient samples from a local outbreak in China, identified by the Centers for Disease Control and Prevention. This innovative CRISPR-empowered SPR platform will further contribute to the fast, sensitive and accurate detection of target nucleic acid sequences with single-base mutations.

关键词： surface plasmon resonance CRISPR SARS-CoV-2 Omicron variant