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Greenhouse gas emissions mitigation and economic viability of sugar crops in China

Frontiers of Agricultural Science and Engineering 2024年第3期11卷 397-408页

作者： Linsheng YANG Xiaozhong WANG Wushuai ZHANG Prakash LAKSHMANAN Yan DENG xiaojun SHI Xinping CheN Fusuo ZHANG Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and Environment Southwest University Key Laboratory of Low-carbon Green Agriculture in Southwestern China (Ministry of Agriculture and Rural Affairs) Southwest University Rice Research Institute Anhui Academy of Agricultural Sciences Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi) Ministry of Agriculture and Rural Affairs Guangxi Key Laboratory of Sugarcane Genetic Improvement Guangxi Academy of Agricultural SciencesSugarcane Research Institute Guangxi Academy of Agricultural Sciences Center for Resources Environment and Food Security China Agricultural University

Climate change mitigation is a major challenge of human society. Currently, to this end, many countries including China are committed to achieving carbon neutrality within a few decades. China is a major sugarcane and sugar beet producing country and has one of the largest carbon footprint for sugarcane and sugar beet production globally. A comprehensive study was conducted on sugarcane and sugar beet crops grown in China for greenhouse gas(GHG)emissions mitigation potential, economic crop production from a sustainable sugar production perspective. Long-term trend analysis showed that yield and GHG emissions of sugarcane and sugar beet crops increased but the ratio of income to cost declined. Structural equation model analysis revealed nitrogen fertilizer and labor as the major drivers of GHG emissions for both sugarcane and sugar beet. For sugarcane and sugar beet, the path coefficient of N fertilizer were -0.964 and -0.835 and that of labor were 0.771 and 0.589,respectively. By transitioning the current cropping system to an improved model with optimized labor, N input and machinery use, the GHG emissions and total annual cost of sugarcane and sugar beet production can be reduced by 32% and 24%, respectively, by 2030, compared to a business-as-usual scenario. This is the first integrated and comparative study of environmental and economic sustainability of sugarcane and sugar beet production in China.These findings will enable all stakeholders of Chinese sugarcane and sugar beet industries to transform them into environmentally and economically sustainable sugar production.

关键词： Economic profits GHG emissions labor input nitrogen input sugar

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Persistence of charge density wave against variation of band structures in V_(x)Ti_(1−x)Se_(2)(x=0–0.1)

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Nano Research 2024年第3期17卷 2129-2135页

作者： Zhanfeng Liu Tongrui Li Wen Zhu Hongwei Shou Mukhtar Lawan Adam Qilong Cui Yuliang Li Sheng Wang Yunbo Wu Hongen Zhu Yi Liu Shuangming Chen xiaojun Wu Shengtao Cui Li Song Zhe Sun National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China School of Chemistry and Materials Sciences CAS Key Laboratory of Materials for Energy Conversionand CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230026China School Zhejiang Institute of Photonelectronics Jinhua 321004China

Charge density wave(CDW)is a phenomenon that occurs in materials,accompanied by changes in their intrinsic electronic properties.The study of CDW and its modulation in materials holds tremendous significance in materials research,as it provides a unique approach to controlling the electronic properties of materials.TiSe_(2) is a typical layered material with a CDW phase at low temperatures.Through V substitution for Ti in TiSe_(2),we tuned the carrier concentration in V_(x)Ti_(1-x)Se_(2) to study how its electronic structures evolve.Angle-resolved photoemission spectroscopy(ARPES)shows that the band-folding effect is sustained with the doping level up to 10%,indicating the persistence of the CDW phase,even though the band structure is strikingly different from that of the parent compound TiSe_(2).Though CDW can induce the band fold effect with a driving force from the perspective of electronic systems,our studies suggest that this behavior could be maintained by lattice distortion of the CDW phase,even if band structures deviate from the electron-driven CDW scenario.Our work provides a constraint for understanding the CDW mechanism in TiSe_(2),and highlights the role of lattice distortion in the band-folding effect.

关键词： charge density wave band structure lattice distortion

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论“拼盘”式跨学科主题学习

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湖南师范大学教育科学学报 2024年第2期23卷 26-32页

作者：温小军广州大学人文学院广东广州510006

“拼盘”式跨学科主题学习在形式上围绕一个共同主题开展跨学科学习,但在内容上各学科之间却“跨而不合”或“合而不深”,在结果上则难以导向对主题的深度理解。“拼盘”式跨学科主题学习的出现具有一定的必然性,它是学科性与跨学科性... 详细信息

“拼盘”式跨学科主题学习在形式上围绕一个共同主题开展跨学科学习,但在内容上各学科之间却“跨而不合”或“合而不深”,在结果上则难以导向对主题的深度理解。“拼盘”式跨学科主题学习的出现具有一定的必然性,它是学科性与跨学科性客观冲突、主学科与相关学科不同立场的博弈、预定设计的实践性调适的结果。“拼盘”式跨学科主题学习有助于跨学科主题学习实践样态的拓展与丰富,也可推进跨学科主题学习的积极稳妥落地。同时,它也可能带来一些缺憾:引发对跨学科主题学习的误读,难以彰显跨学科主题学习的应有价值。基于以上反思,当下乃至未来的跨学科主题学习既应主动实施“拼盘”,又需积极超越“拼盘”。

关键词：跨学科主题学习 “拼盘”式学科跨学科

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“好人免责条款”颁布后武汉公众心肺复苏技术的现状调查

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中国医药导报 2024年第14期21卷 35-39页

作者：罗雯何小俊武汉大学人民医院体检中心湖北武汉430060 武汉大学人民医院国际医疗部湖北武汉430060

目的了解“好人免责条款”颁布后武汉公众心肺复苏技术认知现状、施救意愿及培训现状。方法于2022年10月,采用方便抽样方法选取武汉市53个社区1 000名居民作为研究对象,通过“问卷星”收集问卷,调查基本信息、“好人免责条款”知晓情... 详细信息

目的了解“好人免责条款”颁布后武汉公众心肺复苏技术认知现状、施救意愿及培训现状。方法于2022年10月,采用方便抽样方法选取武汉市53个社区1 000名居民作为研究对象,通过“问卷星”收集问卷,调查基本信息、“好人免责条款”知晓情况、心肺复苏技术认知及培训现状、施救意愿及原因。结果共发放问卷1 000份,116份因中途放弃或规律填写被剔除,共回收884份。884名武汉公众中,242名(27.38%)知晓“好人免责条款”,200名(22.62%)参加过心肺复苏技术培训;心肺复苏操作顺序确切知道占比情况(172名,19.46%)最高,人工呼吸时胸部按压中断时长确切知道占比情况(66名,7.47%)最低;不同年龄、文化程度及职业人群心肺复苏技术相关知识的知晓情况比较,差异有统计学意义(P<0.05);592名(66.97%)愿意施救,不愿意施救原因包括“老人”(158次,6.76%)、“因突发疾病倒地”(132次,11.30%)、“担心纠纷”(174次,9.93%)等;知晓“好人免责条款”、参加过培训的公众施救意愿更高,差异有统计学意义(P<0.05)。结论武汉公众对“好人免责条款”、心肺复苏技术认知不理想,培训程度不够,但施救意愿较高,应加大宣传“好人免责条款”、建立完善的心肺复苏培训体系,消除公众施救顾虑、增强施救信心。

关键词： “好人免责条款” 武汉公众心肺复苏

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人工智能时代税收征管的功能转型与法治因应——以欧盟税务人工智能实践为切入点

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税收经济研究 2024年第3期29卷 85-95页

作者：茅孝军西南政法大学中国财税法治研究院西南政法大学经济法学院

税收征管智能化转型虽然加强了税收征管能力,但新征管技术尚未与税收法治实践充分融合。有关税务机关败诉的案例表明,当前税收征管智能化存在三重风险,即数据采集系统目的模糊、风险管理系统运行不畅和智能分析结果适用受限。基于欧盟... 详细信息

税收征管智能化转型虽然加强了税收征管能力,但新征管技术尚未与税收法治实践充分融合。有关税务机关败诉的案例表明,当前税收征管智能化存在三重风险,即数据采集系统目的模糊、风险管理系统运行不畅和智能分析结果适用受限。基于欧盟各国税务实践可以认为,税收征管智能化的实质是从个案导向转为风险导向,并通过规范风险管理系统运行予以制度化。由于欧盟数字法律框架实际上将税务人工智能排除在外,税务人工智能高度依赖各国自我监管。因此,我国推进税收征管智能化应当授控结合,及时在传统税收征管法律框架内嵌入数据采集系统明确机制、风险管理系统控制机制、智能分析结果监督机制,以促进税收征管技术与税收法治在人工智能时代形成有效协同。

关键词：智慧税务税收征管税务人工智能纳税人权利

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云转播技术在广播电视工程中的应用

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电视技术 2024年第2期48卷 144-146页

作者：和晓峻迪庆州广播电视台云南香格里拉674400

在科学技术不断创新的背景下,云转播技术应运而生,并在各个领域得到了广泛应用,极大地便利了人们的工作和生活。将云转播技术应用于广播电视工程中,可以实现广播电视节目的实时远程制作,提高节目制作效率,降低直转播成本,带给观众更加... 详细信息

在科学技术不断创新的背景下,云转播技术应运而生,并在各个领域得到了广泛应用,极大地便利了人们的工作和生活。将云转播技术应用于广播电视工程中,可以实现广播电视节目的实时远程制作,提高节目制作效率,降低直转播成本,带给观众更加独特、优质的收视体验,提高观众满意度,推动广播电视工程转型升级和业务发展。基于此,首先简单分析了云转播技术的概念、特点及优势,然后探讨了云转播技术在广播电视工程中的应用场景。

关键词：云转播技术广播电视工程应用场景云平台

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三维氮掺杂分级多孔碳纳米片的制备及储锌性能

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高等学校化学学报 2024年第7期45卷 133-144页

作者：何军朱傲阳魏雨晨朱怡全蒋莉何孝军安徽工业大学化学与化工学院煤清洁转化与高值化利用安徽省重点实验室马鞍山243002 安徽工业大学继续教育学院马鞍山243002

以MgO@ZIF-8为双模板和辅助碳源,KHCO_(3)为活化剂,煤沥青(CTP)为碳源,制备了三维氮掺杂分级多孔碳纳米片(N-CNs),探究了KHCO_(3)与CTP的质量比对N-CNs的结构、化学组成和锌离子储存性能的影响.结果表明,当KHCO_(3)与CTP的质量比为3∶1... 详细信息

以MgO@ZIF-8为双模板和辅助碳源,KHCO_(3)为活化剂,煤沥青(CTP)为碳源,制备了三维氮掺杂分级多孔碳纳米片(N-CNs),探究了KHCO_(3)与CTP的质量比对N-CNs的结构、化学组成和锌离子储存性能的影响.结果表明,当KHCO_(3)与CTP的质量比为3∶1时,制备的样品(N-CN_(3))具有三维互连的碳纳米片结构、高比表面积(2360m^(2)/g)和吡咯氮含量.将N-CN_(3)作为锌离子混合电容器(ZHCs)正极时,其在2mol/LZnSO4电解液中展现了出色的比容量(当电流密度为0.2A/g时,比容量为157.6mA·h/g)、高的能量密度(在176.1W/kg功率密度下能量密度为126.5 W·h/kg)和优异的循环稳定性(当电流密度为5 A/g时,经过20000次循环后容量仅衰减6.4%,库仑效率为99.6%).密度泛函理论计算结果证实,吡咯氮掺杂增加了电极材料对锌离子的吸附能,提高了N-CNs对锌离子的吸附容量.

关键词：锌离子混合电容器煤沥青多孔碳 MgO@ZIF-8 密度泛函理论计算

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RSPSSL:A novel high-fidelity Raman spectral preprocessing scheme to enhance biomedical applications and chemical resolution visualization

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Light(Science & Applications) 2024年第2期13卷 366-386页

作者： Jiaqi Hu Gina Jinna Chen Chenlong Xue Pei Liang Yanqun Xiang Chuanlun Zhang Xiaokeng Chi Guoying Liu Yanfang Ye Dongyu Cui De Zhang xiaojun yu Hong Dang Wen Zhang Junfan Chen Quan Tang Penglai Guo Ho-Pui Ho Yuchao Li Longqing Cong Perry Ping Shum State Key Laboratory of Optical Fiber and Cable Manufacture Technology Guangdong Key Laboratory of Integrated Optoelectronics IntellisenseDepartment of EEESouthern University of Science and TechnologyShenzhen 518055China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Department of Nasopharyngeal Carcinoma Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangzhou 510060China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Nephrology Chaozhou People’s HospitalChaozhou 521011China Clinical Research Design Division Sun Yatsen Memorial HospitalGuangzhouGuangdong 510120China School of Automation Northwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina Guangdong Provincial Key Laboratory of Nanophotonic Manipulation Institute of NanophotonicsJinan UniversityGuangzhou 511443China

Raman spectroscopy has tremendous potential for material analysis with its molecular fingerprinting capability in many branches of science and technology.It is also an emerging omics technique for metabolic profiling to shape precision medicine.However,precisely attributing vibration peaks coupled with specific environmental,instrumental,and specimen noise is problematic.Intelligent Raman spectral preprocessing to remove statistical bias noise and sample-related errors should provide a powerful tool for valuable information extraction.here,we propose a novel Raman spectral preprocessing scheme based on self-supervised learning(RSPSSL)with high capacity and spectral fidelity.It can preprocess arbitrary Raman spectra without further training at a speed of~1900 spectra per second without human interference.The experimental data preprocessing trial demonstrated its excellent capacity and signal fidelity with an 88%reduction in root mean square error and a 60%reduction in infinite norm(L__(∞))compared to established techniques.With this advantage,it remarkably enhanced various biomedical applications with a 400%accuracy elevation(ΔAUC)in cancer diagnosis,an average 38%(few-shot)and 242%accuracy improvement in paraquat concentration prediction,and unsealed the chemical resolution of biomedical hyperspectral images,especially in the spectral fingerprint region.It precisely preprocessed various Raman spectra from different spectroscopy devices,laboratories,and diverse applications.This scheme will enable biomedical mechanism screening with the label-free volumetric molecular imaging tool on organism and disease metabolomics profiling with a scenario of high throughput,cross-device,various analyte complexity,and diverse applications.

关键词： spectral scheme resolution

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Comparison of clinical features of nephrotic syndrome after haploidentical and matched donor hematopoietic stem cell transplantation

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Chinese Medical Journal 2024年第4期137卷 478-480页

作者： Wei Sun Yuanyuan Zhang Yuhong Chen Yuqian Sun Yifei Cheng Fengrong Wang Huan Chen Yao Chen Chenhua Yan Xiaodong Mo Wei Han Lanping Xu Yu Wang Xiaohui Zhang Kaiyan Liu xiaojun Huang Peking University People’s Hospital Peking University Institute of HematologyNational Clinical Research Center for Hematologic DiseaseBeijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking UniversityBeijing 10004China

To the Editor:Allogeneic hematopoietic stem cell transplantation(allo-HSCT)is one of the most effective options for hematological diseases.However,allo-HSCT treatment can cause serious complications.Post-transplant kidney damage is an important complication.In this study,we retrospectively analyzed the frequency of nephrotic syndrome(NS)after allo-HSCT and compared the frequency and clinical characteristics of NS between haploidentical donor(HID)and matched donor(MD)HSCT(including matched sibling donors[MSD]and unrelated donors[URD]).

关键词： hematopoietic clinical matched

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On the generation of high-quality Nyquist pulses in mode-locked fiber lasers

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Chinese Physics B 2024年第3期33卷 424-427页

作者：任俞宣葛锦蔓李小军彭俊松曾和平 State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China National Key Laboratory of Science and Technology on Space Microwave China Aerospace Science and TechnologyXi'an 710100China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401120China Jinan Institute of Quantum Technology Jinan 250101China

Nyquist pulses have wide applications in many areas,from electronics to optics.Mode-locked lasers are ideal platforms to generate such pulses.However,how to generate high-quality Nyquist pulses in mode-locked lasers remains elusive.We address this problem by managing different physical effects in mode-locked fiber lasers through extensive numerical simulations.We find that net dispersion,linear loss,gain and filter shaping can affect the quality of Nyquist pulses significantly.We also demonstrate that Nyquist pulses experience similariton shaping due to the nonlinear attractor effect in the gain medium.Our work may contribute to the design of Nyquist pulse sources and enrich the understanding of pulse shaping dynamics in mode-locked lasers.

关键词： mode locking laser soliton fiber pulse

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