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Journal of Geographical Sciences 2024年第9期34卷 1857-1880页

作者： HU Jiayu yao xiaojun ZHANG Cong ZHANG Yuan MA Yuxin College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China

Glaciers and glacial lakes are very sensitive to climate change,and studying their dynamics is important for revealing changes in global *** this study,we extracted the boundaries of glaciers and glacial lakes in the Northern Tianshan Mountains based on Landsat TM/ETM+/OLI and Sentinel 2A/2B MSI remote sensing images and analyzed their dynamics and impacts over the past 30 *** findings indicate that in 2020,the Northern Tianshan region exhibited a total of 3254 glaciers,with an area of 1670.55 km^(2) and a volume of 95.69 km^(3).The corresponding numbers,areas,and volumes of glacial lakes were 281,13.23 km^(2) and 210.49×10~6 m^(3),*** the past 30 years,glaciers and glacial lakes have exhibited opposite *** former decreased by 16,332.64 km^(2)(-0.60%·a^(–1)) and 18.36 km^(3)(-0.58%·a^(–1)),respectively,and the latter increased by 56 and2.48 km^(2)(0.82%·a^(–1)) and 38.88×10~6 m^(3)(0.79%·a^(–1)),***,different glacier termination types cause differences in the glacier retreat ***-terminated glaciers retreated faster than land-terminated glaciers,and the type of glacier termination has a greater effect on the retreat rate than the size of the glacial area.

关键词： glacier glacial lake climate change Northern Tianshan Mountains

Generic Interpretable Reaction Condition Predictions with Open Reaction Condition Datasets and Unsupervised Learning of Reaction Center

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Research 2024年第2期2023卷 773-794页

作者： Xiaorui Wang Chang-Yu Hsieh Xiaodan Yin Jike Wang Yuquan Li Yafeng Deng Dejun Jiang Zhenxing Wu Hongyan Du Hongming Chen Yun Li Huanxiang Liu Yuwei Wang Pei Luo Tingjun Hou xiaojun yao Dr.Neher's Biophysics Laboratory for lnnovative Drug Discovery State Key Laboratory of Quality Research in Chinese MedicineMacao Institute for Applied Research in Medicine and HealthMacao University of Science and TechnologyMacao999078China innovation Institute for Artificial Intelligence in Medicine of Zhejiang University College of Pharmaceutical SciencesZhejiang UniversityHangzhou310058China Faculty of Applied Sciences Macao Polytechnic UniversityMacao999078China College of Chemistry and Chemical Engineering Lanzhou UniversityLanzhou730000China Carbon Silicon AI Technology Co. LtdHangzhouZhejiang 310018China Center of Chemistry and Chemical Biology Guangzhou Regenerative Medicine and Health Guangdong LaboratoryGuangzhou 510530China College of Pharmacy Shaanxi University of Chinese MedicineXianyangShaanxi712044China

Effective synthesis planning powered by deep learning(DL)can significantly accelerate the discovery of new drugs and ***,most DL-assisted synthesis planning methods offer either none or very limited capability to recommend suitable reaction conditions(RCs)for their reaction ***,the prediction of RCs with a DL framework is hindered by several factors,including:(a)lack of a standardized dataset for benchmarking,(b)lack of a general prediction model with powerful representation,and(c)lack of *** address these issues,we first created 2 standardized RC datasets covering a broad range of reaction classes and then proposed a powerful and interpretable Transformer-based RC predictor named *** careful design of the model architecture,pretraining method,and training strategy,Parrot improved the overall top-3 prediction accuracy on catalysis,solvents,and other reagents by as much as 13.44%,compared to the best previous model on a newly curated ***,the mean absolute error of the predicted temperatures was reduced by about 4℃.Furthermore,Parrot manifests strong generalization capacity with superior cross-chemical-space prediction *** analysis indicates that Parrot effectively captures crucial chemical information and exhibits a high level of interpretability in the prediction of *** proposed model Parrot exemplifies how modern neural network architecture when appropriately pretrained can be versatile in making reliable,generalizable,and interpretable recommendation for RCs even when the underlying training dataset may still be limited in diversity.

关键词： versatile absolute generalization

气候变化和土地利用覆盖变化对河西地区植被净初级生产力的影响

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干旱区研究 2024年第1期41卷 169-180页

作者：刘一丹姚晓军李宗省胡家瑜西北师范大学地理与环境科学学院甘肃兰州730070 中国科学院西北生态环境资源研究院高寒山区同位素生态水文与国家公园观测研究站甘肃省祁连山生态环境研究中心干旱区生态安全与可持续发展全国重点实验室甘肃兰州730000

河西地区不仅是我国重要的生态安全保护优先区,而且是丝绸之路经济带核心地段,开展该地区植被净初级生产力(NPP)评估及驱动力定量分析对于陆地生态系统与大气碳交换、气候变化与人类活动对植被综合作用等研究具有重要的理论价值和现实... 详细信息

河西地区不仅是我国重要的生态安全保护优先区,而且是丝绸之路经济带核心地段,开展该地区植被净初级生产力(NPP)评估及驱动力定量分析对于陆地生态系统与大气碳交换、气候变化与人类活动对植被综合作用等研究具有重要的理论价值和现实意义。基于MOD17A3产品数据、土地利用覆盖数据和气象数据,采用R-贡献率和偏相关分析方法,分析了2000—2020年河西地区植被NPP变化特征及土地利用覆被和气候变化对NPP的影响,结果表明:(1)河西地区耕地、水域和居民建筑用地面积整体呈增加趋势,而草地和未利用土地面积有所减少,且2010年后的土地利用覆盖变化(LUCC)整体动态度显著提高,其中,草地、耕地、建设用地和未利用地主导了土地利用类型的相互转换。(2)河西地区整体植被NPP呈增长趋势,2000—2010年和2010—2020年的变化斜率分别为0.86和1.29,且植被NPP具有明显的区域异质性,由东南向西北递减。(3)2000—2020年河西地区LUCC对植被NPP的影响逐渐增大,且气候变化对植被NPP的贡献率普遍高于LUCC,但二者对不同土地利用覆盖类型所起的作用不同,表现为耕地、林地和草地的植被NPP影响因子以气候变化为主导,未利用土地和居民建筑用地的植被NPP影响因子逐步以LUCC为主导。

关键词：净初级生产力土地利用时空变化驱动因素河西地区

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近期青藏高原普若岗日冰原冰川跃动特征

Journal of Geographical Sciences 2024年第6期34卷 1174-1194页

作者：周苏刚王宁练李志杰姚晓军张玉杰秦格霞 Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity College of Urban and Environmental SciencesNorthwest UniversityXi'an 710127China Institute of Earth Surface System and Hazards College of Urban and Environmental SciencesNorthwest UniversityXi'an 710127China College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China

The Puruogangri Ice Field(PIF), classified as an ultra-continental glacier, is considered extremely stable. However, several glaciers in this area have recently experienced surge events with significant instability and information on surge-type glaciers(STGs) in this region remains scarce. In this study, we identified six STGs and reported the observed characteristics of their surging behavior in the region by mapping glacier boundaries, surface flow velocity information, and glacier surface elevation changes using recent Landsat satellite imagery and shuttle radar topography mission(SRTM), TanDEM, and ASTER digital elevation model(AST14DEM) data. These data provide valuable insights into recent glacial processes, flow instability, and rapid glacial movement. During the active phase of the glaciers,all exhibited frontal advances and changes in surface elevation. Owing to limitations in the satellite imagery, flow velocity profiles were only available for glaciers N1(G089071E33998N),NE1(G089128E33943N), and SE3(G089278E33913N) during the active phase. However,these results effectively reflect the velocity variations in both glaciers before, during, and after the surge. Based on the characteristics of the STG, scientific expeditions, and meteorological data, we believe that the surge in PIF was largely influenced by glacier meltwater and changes in subglacial drainage systems.

关键词： glacier surge glacier surface elevation changes glacier surface velocity Puruogangri Ice Field

Identifying the molecular basis of Jinhong tablets against chronic superficial gastritis via chemical profile identification and symptom-guided network pharmacology analysis

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Journal of Pharmaceutical Analysis 2022年第1期12卷 65-76页

作者： Danfeng Shi Lingxian Liu Haibo Li Dabo Pan xiaojun yao Wei Xiao Xinsheng yao Yang Yu Institute of Traditional Chinese Medicine&Natural Products College of Pharmacy and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug ResearchJinan UniversityGuangzhou510632China Kanion Pharmaceutical Co. Ltd.State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical ProcessLianyungangJiangsu222001China State Key Laboratory of Quality Research in Chinese Medicine Macao Institute for Applied Research in Medicine and HealthMacao University of Science and TechnologyTaipaMacaoChina

Chronic superficial gastritis(CSG)is a common disease of the digestive system that possesses a serious *** tablet(JHT),a traditional Chinese medicine(TCM)prescription,exerts therapeutic effects against ***,the molecular basis of its therapeutic effect has not been ***,we employed ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry(UPLC-Q/TOF-MS)based chemical profile identification to determine the chemical components in ***,we applied network pharmacology to illustrate its molecular mechanisms.A total of 96 chemical constituents were identified in JHT,31 of which were confirmed using reference *** on the bioinformatics analysis using the symptom-guided pharmacological networks of“chi,”“blood,”“pain,”and“inflammation,”and target screening through the interaction probabilities between compounds and targets,matrix metalloproteinase 2(MMP2),dopamine d2 receptor(DRD2),and Aldo-keto reductase family 1 member B1(AKR1B1)were identified as key targets in the therapeutic effect exhibited by JHT against ***,according to the inhibitory activities presented in the literature and binding mode analysis,the structural types of alkaloids,flavonoids,organic acids,including chlorogenic acid(10),caffeic acid(13),(-)-corydalmine(33),(-)-isocorypalmine(36),isochlorogenic acid C(38),isochlorogenic acid A(41),quercetin-3-O-a-L-rhamnoside(42),isochlorogenic acid B(47),quercetin(63),and kaempferol(70)tended to show remarkable activities against *** to the above findings,we systematically identified the chemical components of JHT and revealed its molecular mechanisms based on the symptoms associated with CSG.

关键词： Chronic superficial gastritis Jinhong tablets UPLC-Q/TOF-MS Symptom-guided network pharmacology Molecular docking

Glacier changes in the Sanjiangyuan Nature Reserve of China during 2000-2018

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Journal of Geographical Sciences 2022年第2期32卷 259-279页

作者： ZHANG Yuan yao xiaojun ZHOU Sugang ZHANG Dahong College of Geography and Environment Sciences Northwest Normal UniversityLanzhou 730070China College of Urban and Environmental Sciences Northwest UniversityXi’an 710027China

The glaciers in the Sanjiangyuan Nature Reserve of China(SNRC)are a significant water resource for the Yangtze,Yellow,and Mekong *** on Landsat Thematic Mapper(TM)/Operational Land Imager(OLI)images acquired in 2000,2010,and 2018,the outlines of glaciers in the SNRC were obtained by combining band ratio method with manual *** were 1714 glaciers in the SNRC in 2018,with an area of 2331.15±54.84 km^(2),an ice volume of 188.90±6.41 km3,and an average length of 1475.4±15 *** 2000-2018,the corresponding values of glaciers decreased by 69,271.95±132.06 km^(2),18.59±8.83 km3,and 84.75±34 m,*** in the Yangtze River source area witnessed the largest area loss(-154.45 km^(2)),whereas glaciers in the Mekong River source area experienced the fastest area loss(-2.02%·a-1)and the maximum reduction of the average length(-125.82 m).Overall,the retreat of glaciers in the SNRC exhibited an accelerating ***,the loss rate of glacier area in the Yellow River source area in 2010-2018 was more than twice that in *** glacier change is primarily attributed to the significant rise in temperature during the ablation *** other factors including the size,orientation and terminus elevation of glaciers also contributed to the heterogeneity of glacier change.

关键词： glacier climate change nature reserve Yangtze River Yellow River Mekong River

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颈部淋巴结结核患者疾病进展的危险因素分析

新发传染病电子杂志 2024年第1期9卷 42-46页

作者：钟明李刚王宁姚晓军蒋良双成都市公共卫生临床医疗中心胸外科四川成都610061

目的分析颈部淋巴结结核患者规范抗结核治疗过程中疾病进展的临床特征,并进行相关影响因素分析,为该疾病治疗提供新的理念及依据。方法回顾性分析2020年3月至2022年3月成都市公共卫生临床医疗中心确诊为颈部淋巴结结核并进行规范抗结... 详细信息

目的分析颈部淋巴结结核患者规范抗结核治疗过程中疾病进展的临床特征,并进行相关影响因素分析,为该疾病治疗提供新的理念及依据。方法回顾性分析2020年3月至2022年3月成都市公共卫生临床医疗中心确诊为颈部淋巴结结核并进行规范抗结核治疗患者的临床资料。根据疾病转归分为进展组与未进展组,对两组患者性别、年龄、免疫细胞计数及合并症等基线资料进行统计分析,并对影响疾病进展及复发的相关因素进行单因素与多因素分析。结果本研究共纳入颈部淋巴结结核患者129例,其中进展组70例,未进展组59例。进展组与未进展组患者CD4+T淋巴细胞计数(P <0.001)、CD8+T淋巴细胞计数(P=0.005)、NK细胞计数(P <0.001)、合并纵隔淋巴结肿大(P <0.001)、初治与复治(P <0.001)、是否耐药(P=0.004)差异有统计学意义(P <0.05)。多因素Logistic回归分析发现较低的NK细胞计数(OR=39.968,95%CI 9.324~171.333,P<0.001)、复治(OR=24.118,95%CI 4.563~127.479,P<0.001)和合并纵隔淋巴结肿大(OR=4.390,95%CI 1.004~19.205,P=0.049)为颈部淋巴结结核疾病进展及复发的独立危险因素。结论较低的NK细胞计数、复治和合并纵隔淋巴结肿大为颈部淋巴结结核患者规范抗结核治疗过程中疾病进展和复发的独立危险因素。

关键词：颈部淋巴结结核淋巴细胞进展危险因素

Simple hybrid dithiafulvenes-triphenylamine systems as dopant-free hole-transporting materials for efficient perovskite solar cells

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Journal of Energy Chemistry 2022年第5期31卷 293-299页

作者： Zhongquan Wan Yunpeng Zhang Jinyu Yang Jianxing Xia Fangyan Lin xiaojun yao Junsheng Luo Chunyang Jia State Key Laboratory of Electronic Thin Films and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000GansuChina

Two extended hybrid conjugated systems based on a triphenylamine(TPA) core with two and three peripheral 1,4-dithiafulvenes(DTF) units coded WH-2 and WH-3 as hole-transporting materials(HTMs) applied in perovskite solar cells(PSCs) are synthesized by facile one-step reaction in good yield over 75%. DTF unit as electron donor can enhance the electron donating ability and the fusion of benzenic ring of TPA with DTF unit may lead to reinforced intermolecular interactions in the solid state. In addition,WH-2 and WH-3 exhibit a pyramid shape containing partial planarity and quasi three-dimensionality features, which is also conducive to enhancing the π-π stacking of molecules in the solid state. The above-mentioned structural characteristics make the two HTMs have good hole mobilities. As a result,WH-2 and WH-3 obtained the high intrinsic hole mobilities of 4.69 × 10^(-4)and 2.18 × 10^(-3)cm^(2)V^(-1)s^(-1)respectively. Finally, the power conversion efficiencies(PCEs) of PSCs with WH-2 and WH-3 as cost-effective dopant-free HTMs are 15.39% and 19.22% respectively and the PCE of PSC with WH-3 is on a par with that of PSC with Li-TFSI/t-BP doped Spiro-OMe TAD(19.67%).

关键词： Perovskite solar cells Hole-transporting materials Hybrid conjugated systems Triphenylamine 1 4-Dithiafulvenes

Chelation of lithium ion with crown ether for eliminating adverse effects caused by Li-TFSI/tBP doping system in Spiro-OMeTAD

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Journal of Energy Chemistry 2022年第11期31卷 489-496,I0013页

作者： Zhongquan Wan Hui Lu Jinyu Yang Yunpeng Zhang Fangyan Lin Jianxing Xia xiaojun yao Junsheng Luo Chunyang Jia State Key Laboratory of Electronic Thin Films and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110GuangdongChina State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000GansuChina

Lithium bis(trifluoromethanesulfonyl)imide(Li-TFSI)/4-tert-butylpyridine(tBP)is a classic doping system for the hole transport material Spiro-OMeTAD in typical n-i-p structure perovskite solar cells(PSCs),but this system will cause many problems such as high hygroscopicity,Li+migration,pinholes and so on,which hinder PSC from maintaining high efficiency and stability for *** this work,an effective strategy is demonstrated to improve the performance and stability of PSC by replacing t BP with *** chelation of 12-crown-4 with Li+not only improves the doping effect of Li-TFSI,but also perfectly solves the problems caused by the Li-TFSI/tBP *** PSC based on this strategy achieved a champion power conversion efficiency(PCE)over 21%,which is significantly better than the pristine device(19.37%).More importantly,the without encapsulated device based on Li-TFSI/12-crown-4 still maintains 87%of the initial PCE even after 60 days exposure in air,while the pristine device only maintains 22%of the initial PCE under the same aging *** strategy paves a novel way for constructing efficient and stable PSCs.

关键词： Perovskite solar cells Spiro-OMeTAD Li-TFSI dopant 12-Crown-4 Chelation

乳腺浸润性导管癌高频超声不同参数弹性成像的特征分析及对淋巴结转移的诊断

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河北医学 2024年第7期30卷 1150-1156页

作者：元敏姚晓军谢淑慧刘峰唐子峰潘志远广东省深圳市龙华区中心医院乳腺甲状腺外科广东深圳518110

目的:观察乳腺浸润性导管癌高频超声、不同参数弹性成像的特征,并分析其对淋巴结转移的诊断价值。方法:回顾性选取2021年1月至2023年1月于本院就诊且经病理学检查证实的96例乳腺浸润性导管癌患者,依据淋巴结转移情况将患者分为转移组与... 详细信息

目的:观察乳腺浸润性导管癌高频超声、不同参数弹性成像的特征,并分析其对淋巴结转移的诊断价值。方法:回顾性选取2021年1月至2023年1月于本院就诊且经病理学检查证实的96例乳腺浸润性导管癌患者,依据淋巴结转移情况将患者分为转移组与未转移组,所有患者入院时均接受高频超声与超声弹性成像检查,对比不同淋巴结转移情况的患者高频超声及超声弹性成像参数,采用Logistic回归分析其与乳腺浸润性导管癌患者淋巴结转移的关系,绘制ROC探讨高频超声、超声弹性成像参数对淋巴结转移的诊断价值。结果:96例乳腺浸润性导管癌患者中淋巴结转移59例(61.46%),未转移37例(38.54%);淋巴结转移组腋窝淋巴结皮质厚度、腋窝淋巴结纵径、纵横径比值大于未转移组,周边型或混合型血流模式占比、淋巴门消失占比高于未转移组(P1,P<0.05);绘制ROC曲线,结果显示,腋窝淋巴结皮质厚度、腋窝淋巴结纵径、纵横径比值、血流模式、淋巴门消失、最大弹性模量值、弹性数据离散度值、病灶与周边组织比值对乳腺浸润性导管癌患者淋巴结转移具有一定预测价值(AUC=0.833、0.782、0.758、0.721、0.646、0.714、0.685、0.730),联合诊断价值更高(AUC=0.908)。结论:乳腺浸润性导管癌患者高频超声、超声弹性成像特征与淋巴结转移密切相关,可用于淋巴结转移的术前诊断。

关键词：乳腺浸润性导管癌高频超声弹性成像淋巴结转移

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