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Concurrent hetero-/homo-geneous electrocatalysts to bi-phasically mediate sulfur species for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第6期93卷 663-668,I0016页

作者： Rui-Bo linghu Jin-Xiu Chen Jin-Hao Zhang Bo-Quan Li Qing-Shan Fu Gulnur Kalimuldina Geng-Zhi Sun Yunhu Han Long Kong Xi’an Institute of Flexible Electronics(IFE) Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816JiangsuChina Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Mechanical and Aerospace Engineering School of Engineering and Digital SciencesNazarbayev UniversityKabanbay Batyr Ave.53Astana 010000Kazakhstan

Expediting redox kinetics of sulfur species on conductive scaffolds with limited charge accessible surface is considered as an imperative approach to realize energy-dense and power-intensive lithium-sulfur(Li-S)*** this work,the concept of concurrent hetero-/homo-geneous electrocatalysts is proposed to simultaneously mediate liquid-solid conversion of lithium polysulfides(LiPSs)and solid lithium disulfide/sulfide(Li_(2)S_(2)/Li_(2)S)propagation,the latter of which suffers from sluggish reduction kinetics due to buried conductive scaffold surface by extensive deposition of Li_(2)S_(2)/Li_(2)*** selected model material to verify this concept is a two-in-one catalyst:carbon nanotube(CNT)scaffold supported iron-cobalt(Fe-Co)alloy nanoparticles and partially carbonized selenium(C-Se)*** Fe-Co alloy serves as a heterogeneous electrocatalyst to seed Li_(2)S_(2)/Li_(2)S through sulphifilic active sites,while the C-Se sustainably releases soluble lithium polyselenides and functions as a homogeneous electrocatalyst to propagate Li_(2)S_(2)/Li_(2)S via solution *** bi-phasic mediation of the sulfur species benefits reduction kinetics of LiPS conversion,especially for the massive Li_(2)S_(2)/Li_(2)S growth scenario by affording an additional solution directed route in case of conductive surface being largely *** strategy endows the Li-S batteries with improved cycling stability(836 mA h g^(-1)after 180 cycles),rate capability(547 mA h g^(-1)at 4 C)and high sulfur loading superiority(2.96 mA h cm^(-2)at 2.4 mg cm^(-2)).This work hopes to enlighten the employment of bi-phasic electrocatalysts to dictate liquid-solid transformation of intermediates for conversion chemistry batteries.

关键词： Lithium-sulfur batteries Electrocatalysis Lithium polysulfides Sulfur cathode Energy density

Small moleculeα-methylene-γ-butyrolactone,an evolutionarily conserved moiety in sesquiterpene lactones,ameliorates arthritic phenotype via interference DNA binding activity of NF-κB

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3561-3575页

作者： kegang linghu Wenqing Cui Taiqin Li Yueting Tuo Dasong Wang Huiqi Pan Tian Zhang Ligen Lin Hua Yu Xiaoxia Hu Haiyang Li Xiangchun Shen Department of Surgery the Affiliated Hospital of Guizhou Medical UniversityGuiyang 550001China The key Laboratory of Optimal Utilization of Natural Medicine Resources School of Pharmaceutical SciencesGuizhou Medical UniversityGuian New DistrictGuizhou 561113China State key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China Guizhou Institute of Precision Medicine Affiliated Hospital of Guizhou Medical UniversityGuiyang 550001China

Rheumatoid arthritis(RA)is an inflammatory disease accompanied by abnormal synovial microenvironment(SM).Sesquiterpene lactones(SLs)are the main anti-inflammatory ingredients of many traditional herbs utilized in RA treatment.α-Methylene-γ-butyrolactone(α-M-γ-B)is a core moiety that widely exists in natural *** study was designed to investigate the anti-arthritic potential ofα-M-γ-B as an independent small molecule in vitro and in vivo.α-M-γ-B exhibited stronger electrophilicity and anti-inflammatory effects than the other six analogs.α-M-γ-B inhibited the production of pro-inflammatory mediators via repolarizing M1 macrophages into M2 *** transcriptome sequencing suggested thatα-M-γ-B regulated the immune system ***,α-M-γ-B attenuated collagen type II-induced arthritic(CIA)phenotype,restored the balance of Tregs-macrophages and remodeled SM via repolarizing the synovial-associated macrophages in CIA ***,althoughα-M-γ-B did not prevent the trans-nucleus of NF-κB it interfered with the DNA binding activity of NF-κB via direct interaction with the sulfhydryl in cysteine residue of NF-κB p65,which blocked the activation of NF-κ*** of NF-κB reduced the M1 polarization of macrophage and suppressed the synovial hyperplasia and angiogenesis.α-M-γ-B failed to ameliorate CIA in the presence of N-acetylcysteine or when the mice were subjected to the macrophage-specific deficiency of *** conclusion,α-M-γ-B significantly attenuated the CIA phenotype by directly targeting NF-κB p65 and inhibiting its DNA binding *** results suggest thatα-M-γ-B has the potential to serve as an alternative candidate for treating *** greater electrophilicity ofα-M-γ-B,the basis for triggering strong anti-inflammatory activity,accounts for the reason whyα-M-γ-B is evolutionarily conserved in the SLs by medical plants.

关键词： a-Methylene-gbutyrolactone Rheumatoid arthritis NF-κB p65 Synovial microenvironment Sesquiterpene lactones

Genomics,transcriptomics,and peptidomics of the greater wax moth Galleria mellonella neuropeptides and their expression in response to lead stress

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Insect Science 2024年第3期31卷 773-791页

作者： Li-Lin Luo Yang Lin Jun-Hong linghu Wei Gong Yuan-Hong Luo Man Liu Dao-Chao Jin Guy Smagghe Tong-Xian Liu Shun-Hua Gui Tian-Ci Yi Guizhou Provincial key Laboratory for Agricultural Pest Management of the Mountainous Region Institute of EntomologyGuizhou UniversityGuiyangGuizhouChina Guizhou Institute of Biology Guizhou Academy of SciencesGuiyangChina Institute of Plant Health and Medicine Guizhou UniversityGuiyangChina

Neuropeptides are crucial in regulation of a rich variety of developmental,physiological,and behavioral functions throughout the life cycle of *** an integrated approach of multiomics,we identified neuropeptide precursors in the greater wax moth Galleria mellonella,which is a harmful pest of honeybee hives with a worldwide ***,a total of 63 and 67 neuropeptide precursors were predicted and annotated in the *** genome and transcriptome,in which 40 neuropeptide precursors were confirmed in the *** ***,we identified 12 neuropeptide precursor genes present in *** but absent in honeybees,which may be potential novel pesticide target *** hives were contaminated with heavy metals such as lead,enabling its bioaccumulation in *** bodies through the food chain,we performed transcriptome sequencing to analyze the effects of Pb stress on the mRNA expression level of *** neuropeptide *** treatment by Pb,the expression of neuropeptide F1 was found to be significantly downregulated,implying that this neuropeptide might be associated with responding to the heavy metal stress in *** study comprehensively identified neuropeptide precursors in ***,and discussed the effects of heavy metals on insect neuropeptides,with the example of *** results are valuable for future elucidation of how neuropeptides regulate physiological functions in *** and contribute to our understanding of the insect's environmental plasticity and identify potential new biomarkers to assess heavy metal toxicity in insects.

关键词： Galleria mellonella genomics heavy metal stress neuropeptide peptidomics transcriptomics

数字经济对商贸流通业发展的影响效应研究——兼论供应链韧性的中介效应

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商业经济研究 2024年第3期 20-24页

作者：令狐萌萌厦门工学院福建厦门361021

本文选取我国2011-2021年30个省份面板数据,实证分析数字经济对商贸流通业发展的影响效应及作用机制,研究发现:数字经济显著促进了商贸流通业发展,且在考虑内生变量和稳健性检验后研究结论依然成立;从作用机制分析来看,供应链韧性在数... 详细信息

本文选取我国2011-2021年30个省份面板数据,实证分析数字经济对商贸流通业发展的影响效应及作用机制,研究发现:数字经济显著促进了商贸流通业发展,且在考虑内生变量和稳健性检验后研究结论依然成立;从作用机制分析来看,供应链韧性在数字经济对商贸流通业发展过程中起到间接作用;从空间效应分析来看,数字经济对商贸流通业发展具有显著的空间溢出效应。为进一步推动数字经济对商贸流通业发展的稳定作用,本文提出加强供应链韧性、加强区域间合作、提升数字经济创新能力等相关政策建议。

关键词：数字经济商贸流通业发展供应链韧性空间溢出效应

Impact of pancreatic and biliary stent on post-endoscopic papillectomy complications: A single-center retrospective study

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中华医学杂志(英文版) 2024年第17期137卷 2024 May 27页

作者： Ru Nan Chai Ningli Zhang Bo Li Longsong Bi Yawei linghu Enqiang Department of Gastroenterology The First Medical Center of Chinese People’s Liberation Army General Hospital Beijing China Digestive Endoscopy Center The First Medical Center of Chinese People’s Liberation Army General Hospital Beijing China

Background: Endoscopic papillectomy (EP) is recommended as the first-line therapy for ampullary tumors, despite a relatively high incidence of complications. Pancreatic and/or biliary stents are placed at the endoscopist’s discretion to prevent post-EP complications. The present study aimed to evaluate the efficacy of different ***: A total of 117 patients who underwent EP and met the criteria between June 2006 and October 2022 were enrolled in the study. These patients were divided into a pancreatic stent group (PS group,n = 47), a biliary stent group (BS group,n = 38), and a two-stent group (PBS [PS and BS] group,n = 32). Relevant clinical data were collected and compared among the three groups. Multivariate logistic analyses were performed to explore risk factors for post-EP ***: The incidence of all complications was 37.6% (44/117). Pancreatitis and hemorrhage were the two most common complications with incidence rates of 14.5% (17/117) and 17.9% (21/117). The incidence rates of post-EP pancreatitis were 10.6% (5/47), 23.7% (9/38), and 9.4% (3/32) in the PS group, BS group, and PBS group, respectively, with no significant differences. There were also no significant differences in other complications among the three groups. Age (odds ratio [OR]: 0.95; 95% confidence interval [CI]: 0.91-0.99;P = 0.022) was independently associated with post-EP pancreatitis while tumor size (OR: 1.66; 95% CI: 1.06-2.60;P = 0.028) was independently associated with post-EP ***: While pancreatic stenting is the first choice to prevent post-EP pancreatitis, biliary stenting could also be considered as a substitute for patients with difficulties in pancreatic cannulation. Two-stent (biliary and pancreatic stent) placement is unnecessary unless it is required due to other concerns.

关键词： Endoscopic papillectomy Complications Preventive measures Pancreatitis Hemorrhage

基于数据预处理和计算机VMD-LSTM-GPR的储能系统离子电池剩余寿命预测

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储能科学与技术 2024年第1期13卷 336-338页

作者：田凌浒袁炳夏中国石油新疆油田分公司新疆克拉玛依834000 惠州学院网络与信息中心广东惠州516007

离子电池剩余寿命影响储能系统运行能力,准确预测电池寿命,有助于判断系统的实时运行状态,为获得较为可靠的预测结果,提出基于数据预处理和计算机VMD-LSTM-GPR的储能系统离子电池剩余寿命预测方法。针对储能系统离子电池剩余寿命预测的... 详细信息

离子电池剩余寿命影响储能系统运行能力,准确预测电池寿命,有助于判断系统的实时运行状态,为获得较为可靠的预测结果,提出基于数据预处理和计算机VMD-LSTM-GPR的储能系统离子电池剩余寿命预测方法。针对储能系统离子电池剩余寿命预测的相关理论问题进行研究,并联合储能数据预处理标准与计算机VMDLSTM-GPR模型,计算锂离子电池的容量退化能力,从而评估剩余电池寿命,实现基于数据预处理和计算机VMD-LSTM-GPR的储能系统离子电池剩余寿命预测。

关键词：数据预处理计算机VMD-LSTM-GPR 储能系统离子电池剩余寿命

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Chinese national clinical practice guidelines on the prevention,diagnosis,and treatment of early gastric cancer

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Chinese Medical Journal 2024年第8期137卷 887-908页

作者： Peng Li Ziyu Li Enqiang linghu Jiafu Ji Society of Digestive Endoscopy of the Chinese Medical Association Colorectal Surgery Group of the Chinese Medical Association Chinese Association of Gastroenterologists&Hepatologists National Clinical Research Center for Digestive Diseases Chinese Medical Journal Clinical Practice Guideline Collaborative Department of Gastroenterology Beijing Friendship HospitalCapital Medical UniversityNational Clinical Research Center for Digestive DiseaseBeijing 100050China Department of Gastrointestinal Surgery Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education)Peking University Cancer Hospital and InstituteBeijing 100142China Department of Gastroenterology and Hepatology the First Medical CenterChinese People’s Liberation Army General HospitalBeijing 100853China 不详

Background:Gastric cancer is one of the most common malignant tumors in the digestive system in *** comprehensive practice guidelines for early gastric cancer in China are currently ***,we created the Chinese national clinical practice guideline for the prevention,diagnosis,and treatment of early gastric ***:This clinical practice guideline(CPG)was developed in accordance with the World Health Organization’s recommended process and with the Grading of Recommendations Assessment,Development,and Evaluation(GRADE)in assessing evidence *** used the Evidence to Decision framework to formulate clinical recommendations to minimize bias and increase transparency in the CPG development *** used the Reporting Items for practice Guidelines in HealThcare(RIGHT)statement and the Appraisal of Guidelines for Research and Evaluation II(AGREE II)as reporting and conduct guidelines to ensure completeness and transparency of the ***:This CPG contains 40 recommendations regarding the prevention,screening,diagnosis,treatment,and follow-up of early gastric cancer based on available clinical studies and *** provide recommendations for the timing of Helicobacter pylori eradication,screening populations for early gastric cancer,indications for endoscopic resection and surgical gastrectomy,follow-up interval after treatment,and other ***:This CPG can lead to optimum care for patients and populations by providing up-to-date medical *** intend this CPG for widespread adoption to increase the standard of prevention,screening,diagnosis,treatment,and follow-up of early gastric cancer;thereby,contributing to improving national health care and patient quality of life.

关键词： Early gastric cancer Prevention Screening Diagnosis Treatment Follow-up

一组同分异构体含能化合物热稳定性差异的机理研究

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含能材料 2024年第1期32卷 38-48页

作者：王榕令狐遥遥张朝阳钟凯中国工程物理研究院化工材料研究所四川绵阳621999 中北大学材料科学与工程学院山西太原030051

同分异构现象在含能化合物中普遍存在,同分异构体在能量和安全性能上可存在差异,研究其机制有助于深化含能化合物结构‐性能关系。本研究基于电荷自洽的密度泛函紧束缚方法探究了2,6‐二氨基‐3,5‐二硝基‐1‐氧化吡嗪(LLM‐105)、3,5... 详细信息

同分异构现象在含能化合物中普遍存在,同分异构体在能量和安全性能上可存在差异,研究其机制有助于深化含能化合物结构‐性能关系。本研究基于电荷自洽的密度泛函紧束缚方法探究了2,6‐二氨基‐3,5‐二硝基‐1‐氧化吡嗪(LLM‐105)、3,5‐二氨基‐4,6‐二硝基‐1‐氧化哒嗪和1,4‐二硝基呋咱并[3,4‐b]哌嗪(DNFP)3种同分异构体含能化合物在程序升温和恒温加热条件下的热分解机理。结果表明,LLM‐105晶体中存在较强的氢键网络,在分解初期能够发生占比达68.75%的分子间氢转移反应,对其高热稳定性起到了重要作用;3,5‐二氨基‐4,6‐二硝基‐1‐氧化哒嗪的骨架结构在加热下容易通过N─N键断裂发生开环,其热稳定性比LLM‐105更低;DNFP发生硝基断裂的键解离能为172.3 kJ·mol^(-1),显著低于其它两种同分异构体,同时其并环骨架也容易通过C─C键和N─O键断裂发生开环,其热稳定性最低。可见,分子最弱键的解离能、环骨架结构的稳定性、晶体的氢键网络都是决定含能化合物热稳定性的重要结构因素。

关键词：含能化合物同分异构体热分解稳定性

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开孔方式对层装蜜桃差压预冷性能的影响

食品科学 2024年第3期45卷 150-158页

作者：谌英敏赵璐茜令狐博祥宋海燕山西农业大学农业工程学院山西太谷030801 旱作农业机械关键技术与装备山西省重点实验室山西太谷030801

为探究市场通用瓦楞纸箱的开孔方式对层装蜜桃预冷性能的综合影响,确定预冷环境参数与预冷性能间的函数关系以及不同工况条件下最佳的开孔包装,实现果实采后快速节能预冷,本研究基于计算流体力学构建了圆形开孔(circular vent,CV)和矩... 详细信息

为探究市场通用瓦楞纸箱的开孔方式对层装蜜桃预冷性能的综合影响,确定预冷环境参数与预冷性能间的函数关系以及不同工况条件下最佳的开孔包装,实现果实采后快速节能预冷,本研究基于计算流体力学构建了圆形开孔(circular vent,CV)和矩形开孔(rectangle vent,RV)的热质传递差压预冷数值模型。通过对比分析实验与模拟数据,得知两者间的最大均方根误差为0.799℃,平均绝对百分比误差为6.6%,这充分验证了该数值模型具有较高的预测精准度。通过探讨不同开孔方式下箱内温度与流场分布情况,发现CV的预冷均匀性差于RV,但其预冷时间和风机能耗却分别减少了30%~40%和50%,且与差压呈幂函数关系。由此可知,在选择包装箱时,若更注重预冷品质,应选择RV;若要节约预冷成本,应选择CV。若两者都要兼顾,则需CV直径大于35 mm。该研究为中小型果园合理选择包装箱开孔方式以及精准监控果实预冷性能提供了理论参考依据。

关键词：蜜桃差压预冷开孔方式预冷性能数值模拟计算流体力学