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Science China Chemistry 2025年第01期 163-173页

作者： Chenhui Zhang Chunjun Liang Fulin Sun Ting Zhu Xinghai Huang Yuzhu Guo Xinyu Guo Kunyang Ge Dan Li Fangtian You Zhiqun he Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic TechnologyBeijing Jiaotong University Department of physics School of Physical Science and Engineering Beijing Jiaotong University

In the field of perovskite solar cells(pSCs), the research on defects in the buried interface has been relatively limited due to its non-exposure; however, this interface significantly impacts the performance enhancement of inverted pSCs. This study employs phenylethylammonium chloride(pEACl) molecules as a buffer layer to modify the buried interface of p-i-n structured pSCs,aiming to enhance the uniformity of self-assembled monolayers(SAMs) and facilitate the uniform nucleation and growth of perovskite films on the substrate. Furthermore, the introduction of the pEACl buffer layer effectively passivates defects at the bottom of the perovskite layer and notably enhances the crystal quality of the perovskite film by mitigating residual stress,thereby reducing nonradiative recombination loss. Following these optimizations, the MA-free pSCs treated with pEACl achieve a power conversion efficiency(pCE) of 24.11%, with significant improvements in storage, thermal stability, and operational stability. particularly noteworthy is the device's performance in an unencapsulated state, whereas after 1,500 hours of continuous light operation stability testing, it retains 97% of its original efficiency. This study not only enriches the systematic understanding of the characteristics of the buried interface in pSCs but also contributes significantly to advancing the commercial production of perovskite photovoltaic technology.

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Impacts of pI3K/protein kinase B pathway activation in reactive astrocytes: from detrimental effects to protective functions

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Neural Regeneration Research 2025年第4期20卷 1031-1041页

作者： Ramón pérez-Núñez María Fernanda González Ana María Avalos Lisette Leyton Cellular Communication Laboratory Programa de Biología Celular y MolecularCenter for Studies on ExerciseMetabolism and Cancer(CEMC)Instituto de Ciencias Biomédicas(ICBM)Facultad de MedicinaUniversidad de ChileSantiagoChile Advanced Center for Chronic Diseases(ACCDiS) Faculty of Chemical and Pharmaceutical Sciences&Faculty of MedicineUniversidad de ChileSantiagoChile Instituto de Ciencias Biomédicas Facultad de Ciencias de la SaludUniversidad Autónoma de ChileSantiagoChile

Astrocytes are the most abundant type of glial cell in the central nervous *** injury and inflammation,astrocytes become reactive and undergo morphological and functional *** on their phenotypic classification as A1 or A2,reactive astrocytes contribute to both neurotoxic and neuroprotective responses,***,this binary classification does not fully capture the diversity of astrocyte responses observed across different diseases and *** analysis has revealed that reactive astrocytes have a complex landscape of gene expression profiles,which emphasizes the heterogeneous nature of their *** actively participate in regulating central nervous system inflammation by interacting with microglia and other cell types,releasing cytokines,and influencing the immune *** phosphoinositide 3-kinase(pI3K)/protein kinase B(AKT)signaling pathway is a central player in astrocyte reactivity and impacts various aspects of astrocyte behavior,as evidenced by in silico,in vitro,and in vivo *** astrocytes,inflammatory cues trigger a cascade of molecular events,where nuclear factor-κB serves as a central mediator of the pro-inflammatory ***,we review the heterogeneity of reactive astrocytes and the molecular mechanisms underlying their *** highlight the involvement of various signaling pathways that regulate astrocyte reactivity,including the pI3K/AKT/mammalian target of rapamycin(mTOR),αvβ3 integrin/pI3K/AKT/connexin 43,and Notch/pI3K/AKT *** targeting the inactivation of the pI3K/AKT cellular signaling pathway to control reactive astrocytes and prevent central nervous system damage,evidence suggests that activating this pathway could also yield beneficial *** dual function of the pI3K/AKT pathway underscores its complexity in astrocyte reactivity and brain function *** review emphasizes the importance of employing astrocyte-exclusive models to underst

关键词： inflammation integrins neuroprotective neurotoxic phosphatidylinositol 3-kinase reactive astrocytes signal transduction Thy-1(CD90)

Evidence-based management of gastrointestinal diseases

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Gastroenterology Report 2015年第1期3卷 1-2页

作者： J.Thomas lamont Division of Gastroenterology Beth Israel Deaconess Medical CenterHarvard Medical SchoolDA-501330 Brookline AvenueBostonMA 02215USA

This special issue of Gastroenterology Report is directed at“Evidence-based management of gastrointestinal(GI)diseases”.Gastroenterologists are now using a range of diagnostic tests and therapies that were largely unavailable twenty years *** is a fast-moving field,with innovations being developed at a rapid *** in this issue are authoritative reviews on how to manage a wide variety of conditions that affect the GI and biliary tracts using both established and emerging technologies,with emphasis on evidence to support the best practices and to achieve the best possible outcomes for our patients;for example,much has changed as regards our diagnostic accuracy in celiac disease.

关键词： diseases gastrointestinal patients

Sustainable and biocompatible Zn-based batteries

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National Science Review 2023年第4期10卷 8-9页

作者： Guanjie he Ivan p.parkin Department of Chemical Engineering University College London Christopher Ingold Laboratory Department of Chemistry University College London

Next-generation and functional batery technologies beyond the Li-ion are emerging [1]. Sustainable and biocompatible bateries are needed for certain applications, including implantable medical devices [2]. Zinc-based bateries(ZBs) are encouraging technologies with low cost, high theoretical capacity and high safety features [3].

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A joint optimization framework for wheat harvesting and transportation considering fragmental farmlands

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Information processing in Agriculture 2021年第1期8卷 1-14页

作者： p.he J.Li Faculty of Engineering Nanjing Agricultural UniversityNanjing 210031PR China

Crop harvesting and transportation should be considered as an integrated system to be optimized aiming to reduce the total operational ***,current studies mainly focused on how to reduce operational cost for a link,not from integrated *** this paper,a joint problem which consists of harvesting and transportation problem is implemented and optimized to meet the better schedule with less operational *** harvesting and transportation problems could respectively be considered as a vehicle routing problem with multiple trips and a transportation problem,.These two problems should be optimized jointly because combine-harvesters and transporters should be synchronized at fragmental farmlands.A mixed integer programming is employed considering all constraints arising in the joint optimized ***,a hybrid algorithm is presented to find an optimum solution for this *** different cases are used to verify the performance of the hybrid ***,our real cases are used to prove that there is a significant improvement if the integrated wheat harvesting and transportation policy is *** results indicate that the model and algorithm is an effective approach to help farmers to decrease reaping costs.

关键词： Wheat Harvesting and transportation Vehicle routing Mixed integer programming

Fhotocatalytic degradation of polybrominated diphenyl ethers in pure water system

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Frontiers of Environmental Science & Engineering 2016年第2期10卷 229-235页

作者： Min ZHANG Jian LU Yiliang he p. Chris WILSON School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China Indian River Research and Education Center University of Florida Fort Pierce FL 34945 USA

Due to the low water solubility of polybromi- nated diphenyl ethers, organic solvent is usually added into the oxidation system to enhance the removal efficiency. In this study the photocatalytic degradation of decabromodi- phenyl ether （BDE209）, a type ofpolybrominated diphenyl ether used throughout the world, in pure water without the addition of organic solvent was investigated. In the pure water system, BDE209 was not dissolved but dispersed as nano-scale particles with a mean diameter of 166 nm. Most of BDE209 （〉 98%） were removed within 4 h and the final debromination ratio was greater than 80%. Although the addition of organic solvent （tetrahydrofuran, THF） could lead to a relatively high BDE209 degradation rate, the final debromination ratio （〈 50%） was much lower than that in pure water system. Major oxidation inter- mediates of tetrahydrofuran, including tetrahydro-2-fura- nol and y-butyrolactone, were detected indicating the engagement of THF in the BDE209 degradation process. The photocatalytic degradation of BDE209 in the pure water system followed first-order kinetics. The BDE209 degradation rate constant increased from 0.0011 to 0.0023 min-1 as the pH increased from 3 to 9.

关键词： polybrominated diphenyl ethers photocataly-tic degradation solvent

Determination of stress intensity factor with direct stress approach using finite element analysis

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Acta Mechanica Sinica 2017年第5期33卷 879-885页

作者： X.Ji F.Zhu p.F.he School of Aerospace Engineering and Applied Mechanics Tongji University

In this article, a direct stress approach based on finite element analysis to determine the stress intensity factor is improved. Firstly, by comparing the rigorous solution against the asymptotic solution for a problem of an infinite plate embedded a central crack, we found that the stresses in a restrictive interval near the crack tip given by the rigorous solution can be used to determine the stress intensity factor, which is nearly equal to the stress intensity factor given by the asymptotic solution. Secondly, the crack problem is solved numerically by the finite element method. Depending on the modeling capability of the software, we designed an adaptive mesh model to simulate the stress singularity. Thus, the stress result in an appropriate interval near the crack tip is fairly approximated to the rigorous solution of the corresponding crack problem. Therefore, the stress intensity factor may be calculated from the stress distribution in the appropriate interval, with a high accuracy.

关键词： Fracture mechanics Stress singularity Stress intensity factor Finite element method Direct stress method

浑水入渗对粗粒土柱孔隙及渗透性影响试验研究

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岩土工程学报 2025年第1期47卷 173-183页

作者：毛海涛张超袁古城何涛谷易山西农业大学城乡建设学院山西太原030000 重庆三峡学院土木工程学院重庆404120

浑水渗流在水利工程的反滤设计、浑水浇灌、堤坝渗流控制等方面都有较大影响,目前理论多采用稳定渗流计算方法,忽略了渗流过程中粗细颗粒与水力的耦合作用。自制渗流装置,将不同控制粒径浑水、不均匀系数粗粒土柱和水头等作为基本控制因... 详细信息

浑水渗流在水利工程的反滤设计、浑水浇灌、堤坝渗流控制等方面都有较大影响,目前理论多采用稳定渗流计算方法,忽略了渗流过程中粗细颗粒与水力的耦合作用。自制渗流装置,将不同控制粒径浑水、不均匀系数粗粒土柱和水头等作为基本控制因素,研究不同工况下浑水中悬浮颗粒对粗粒土土柱中的渗透特性影响;推导了变渗透系数浑水渗流计算微分方程,通过对比验证和公式修正,结果表明:粗粒土中颗粒淤积率与控制粒径C_(0.075)含量符合Boltzmann函数关系;C_(0.075)是重要的影响因子,浑水颗粒在粗粒土柱的运移、沉积和淤堵形态过程大致可分为4种形态:表层堆积淤堵形态(S型);表层-内部双重淤堵形态(S-I型);内部孔隙淤堵形态(I型);暂态孔隙淤堵形态(p型)。土柱C_(u)越大,孔隙度越小,浑水颗粒在粗粒土中运移也越困难,土柱填充性就越差;水头加剧了颗粒在土柱内部运移的速度,但也加速了其在顶部的沉积并封堵;S型时土柱0~2cm渗透系数下降速率最大,封堵时总体渗透系数最小,2cm以下相对孔隙率及随深度逐渐减小;S-I和I型土柱下部渗透系数明显滞后于上部,相对孔隙率存在临界深度(约为4~6cm);p型时土柱整体相对孔隙率基本无变化。

关键词：颗粒渗流粗粒土浑水堵塞

有机肥氮替代化肥氮对青稞生长特性、叶片碳氮平衡和氮代谢酶活性的影响

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麦类作物学报 2025年第1期45卷 121-129页

作者：闫佳会翁华何涛青海大学/省部共建三江源生态与高原农牧业国家重点实验室青海西宁810016

为探讨青藏高原有机肥氮替代化肥氮对青稞生长及碳氮代谢的影响,在氮磷钾施用量相同条件下,通过盆栽试验,比较分析了不同比例有机肥氮替代化肥氮(0%、40%和100%,分别记为ORF0、ORF40、ORF100)处理下青稞品种昆仑14号生长特性、叶片碳氮... 详细信息

为探讨青藏高原有机肥氮替代化肥氮对青稞生长及碳氮代谢的影响,在氮磷钾施用量相同条件下,通过盆栽试验,比较分析了不同比例有机肥氮替代化肥氮(0%、40%和100%,分别记为ORF0、ORF40、ORF100)处理下青稞品种昆仑14号生长特性、叶片碳氮平衡和氮代谢酶活性的差异。结果表明,与ORF0处理相比,ORF40处理下青稞的根系长度、老叶碳氮比均显著增加(pp<0.05);ORF100处理的新叶和老叶GOGAT活性无明显变化规律,GDH活性显著降低。ORF40处理的新叶谷氨酰胺合成酶(GS)活性在抽穗期和扬花期均高于ORF0处理,新叶中谷草转氨酶(GOT)活性在苗期至扬花期显著增加,增幅22.22%~35.29%;ORF100处理的新叶和老叶GS活性均显著下降。综合来看,与ORF0处理相比,ORF40处理下青稞根长和株高变化较小,叶片拥有更稳定的碳氮比,且老叶中谷氨酸合成酶和谷氨酸脱氢酶活性增加,新叶中GS活性和GOT增加,ORF40处理的新叶与老叶都保持了一定的氮代谢能力,其中老叶的氮代谢能力更为稳定,说明适宜比例的有机肥替代化肥有助于青稞植株稳健生长和碳氮代谢。

关键词：青稞有机肥替代生长特性碳氮比氮代谢酶

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Interface engineering of p-n heterojunction for kesterite photovoltaics:A progress review

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Journal of Energy Chemistry 2021年第9期30卷 1-8页

作者： Mingrui he Kaiwen Sun Mahesh p.Suryawanshi Jianjun Li Xiaojing Hao School of photovoltaic and Renewable Energy Engineering University of New South WalesSydneyNSW 2052Australia

Kesterite Cu_(2)ZnSn(S,Se)_4(CZTSSe)is considered one or the most promising thin-film photovoltaic(pV)technologies due to its bandgap tunability(1.0~1.5 eV)and high absorption coefficient(>10^(4)cm^(-1)).However,the highest power conversion efficiency(pCE)of CZTSSe has so far only reached up to 12.6%,much lower than the theoretical limit defined by the Shockley-Queisser(SQ)*** large opencircuit voltage(V_(oc))deficit and inferior fill factor(FF)are prevalent in kesterite pV and hamper the improvement in *** this review,unfavourable energy band alignment at the CZTSSe/buffer junction,as well as defective interface are identified as two obstacles at the p-n *** issues contribute to the interface induced recombination,thus significantly reducing ***,we review recent advances in strategies to improve the efficiency by altering the characteristics of the interface,covering alternative buffer layers,heterojunction treatments and passivation ***,future research directions of heterojunction engineering are proposed as schemes towards the ideal interface in kesterite solar cells.

关键词： Kesterite Thin film Solar cell heterojunction Interface