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Journal of Geographical Sciences 2025年第1期35卷 189-212页

作者： LIU Meiying MIN Leilei WU Lin ZHANG Yucui QI Yongqing WANG Shiqin LIU Binbin geng di SHEN Yanjun Hebei Key Laboratory of Water-Saving Agriculture Key Laboratory of Agricultural Water ResourcesCenter for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyCAS School of Advanced Agricultural Sciences University of Chinese Academy of Sciences

Nitrate （NO3-） accumulation and transport processes in the thick vadose zone affect the evolution of the groundwater NO3-content in intensive agricultural *** land-use change （ALUC）,typically accompanied by substantial alterations in nitrogen fertilizer application and irrigation practices,is an important influencing *** study evaluated the changes in NO3-accumulation and transport in the deep vadose zone （DVZ,below the root zone）,and the groundwater NO3-content associated with ALUC from grain to vegetable fields in the North China Plain （NCP）.The ALUC from grain to vegetable resulted in nitrate–nitrogen （NO3--N） accumulation in DVZ increased by 235.5 kg ha-1m-1（163.2%） in the piedmont plain and 224.9 kg ha-1m-1（102.7%） in the central plain,*** change accelerated downward transport velocity in the DVZ (from 0.81±0.47 to 0.89±0.55 m yr-1in the piedmont plain,and from 0.24±0.12 to 0.92±0.12 m yr-1in the central plain) and increased NO3-leaching *** transport velocity and leaching fluxes resulted in chemical N-fertilizer entering the aquifer in several areas in the piedmont *** impact of the agricultural activity intensity changes,accompanied by the ALUC,on groundwater quantity and quality should be considered in similar regions.

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A monolithic 3D IGZO-RRAM-SRAM-integrated architecture for robust and efficient compute-in-memory enabling equivalent-ideal device metrics

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Science China(Information Sciences) 2025年

作者： Shengzhe YAN Zhaori CONG Zi WANG Zhuoyu DAI Zeyu GUO Zhihang QIAN Xufan LI Xu ZHENG Chuanke CHEN Nianduan LU Chunmeng DOU Guanhua YANG Xiaoxin XU di geng Jinshan YUE Lingfei WANG Ling LI Ming LIU Institute of Microelectronics of the Chinese Academy of Sciences University of Chinese Academy of Sciences

Abstract Compute-in-memory (CIM) based on various devices such as static random access memory (SRAM) and resistive random access memory (RRAM) and other emerging devices such as indium-gallium-zinc-oxide (IGZO) transistor, magnetoresistive RAM (MRAM), and ferroelectric RAM (FeRAM) has been explored for better performance and energy efficiency on neural networks applications. However, CIM based on a single-type device suffers a variety of non-ideal metrics to reach the simultaneous optimal accuracy, density, and energy efficiency. This work presents equivalent-ideal CIM (Eq-CIM), a monolithic 3D(M3D) IGZO-RRAM-SRAM integrated architecture for robust and efficient compute-in-memory enabling equivalent-ideal device metrics. To overcome the non-ideality (variation, endurance, temperature, etc.) of the single-type devices, system-technology co-optimization (STCO) is performed. This work highlights the non-ideality-aware functionality breakdown for robust high accuracy and simultaneous high density/efficiency, by utilizing 2T0C IGZO for temporal activation storage, RRAM for high-density weight storage, and SRAM for accurate CIM. Device-to-algorithm variation transfer is applied to analyze the system-level accuracy. We benchmark Eq-CIM architecture on CIFAR-10/ImageNet, with 5.06×storage density and 5.05×/2.45×area/energy efficiency compared with single-type-device-based CIM, and high robustness (<0.27%accuracy loss) from-40℃ to 120℃.

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NECESSARY PRINCIPLES FOR ESTABLISHING FUNDAMENTAL EQUATIONS OF MULTIPHASE FLOW

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Journal of Hydrodynamics 1991年第1期3卷 22-25页

作者： Zhong, Zhao-xin Ma, geng-di Wang, Yun Univ of Science and Technology of China Hefei China

The fundamental equations of multiphase flow that have been established so far fall into two main groups, the multifluid model and the mixture model [1] [2]. Because of the different forms of the equations derived from these two models, many disputes arose [1] [3] [4]. This paper deals mainly with the basic principles for establishing the fundamental equations of multiphase flow, namely the principles of consistency, invariance of material coordinates and material indifference. The results lead to the consistent description of the two models.

关键词： Equations of Motion Flow of Fluids Two Phase Fluid Mechanics Mathematical Techniques differential Equations

Structure and antibacterial property of a new diterpenoid from Euphorbia helioscopia

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Chinese Journal of Natural Medicines 2015年第9期13卷 704-706页

作者： geng di YI Li-Tao SHI Yao MIN Zhi-Da College of Chemical Engineering Huaqiao University Department of Natural Medicinal Chemistry China Pharmaceutical University

The present study was designed to isolate and evaluate the antibacterial activity of the compounds from the whole plant of Euphorbia helioscopia L.. Various chromatographic techniques were used to isolate and purify the compound. The structure of the compound was elucidated on basis of spectral data(1H NMR, 13 C NMR, 1H-1H COSY, HSQC, HMBC, NOESY, IR, and HR-ESI-MS). A new jatrophone-type diterpenoid(14α,15β-diacetoxy-3β-benzoyloxy-7β-nicotinoyloxy-9-oxo-jatropha-5E,11E-diene), named euphoheliosnoid E(1), was isolated from the whole plant of E. helioscopia L. Compound 1 showed significant anti-microbial activity against oral pathogens.

关键词： Euphorbia helioscopia Jatrophone-type diterpenoid Euphoheliosnoid E Anti-microbial activity

A new diterpenoid from Euphorbia helioscopia

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Chinese Chemical Letters 2010年第1期21卷 73-75页

作者： geng, di Shi, Yao Min, Zhi Da Liang, Jing Yu China Pharmaceut Univ Dept Nat Med Chem Nanjing 210009 Peoples R China

A new jatrophane-type diterpenoid,7β,14β,15β-triacetoxy-3β-benzoyloxy-9-oxojatropha-5E,11E-diene,named euphornin N was isolated from Euphorbia helioscopia *** structure and relative stereochemistry of the new comp... 详细信息

关键词： 7β 14β 15β-Triacetoxy-3β-benzoyloxy-9-oxojatropha-5E 11E-diene Euphornin N Euphorbia helioscopia

Prognostic Value of D-dimer in Patients with diffuse Large B-cell Lymphoma:A Retrospective Study

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Current Medical Science 2019年第2期39卷 222-227页

作者： Yu-di geng Yi-ren CHEN Jin JIN Xiao-di WANG Shu ZHANG Deng-ju LI Department of Hematology Tongji HospitalTongji Medical CollegeHua zhong University of Science and TechnologyWuhan 430030China College of Mathematics and Statistics Shenzhen UniversityShenzhen 518060China

This study evaluated the significance of serum D-dimer for predicting survival of patients with diffuse large B-cell lymphoma(DLBCL).We analyzed the clinical data from 113 patients who were newly diagnosed with DLBCL at Tongji Hospital from January 2012 to January *** results indicated that there were higher levels of D-dimer in DLBCL patients with the following characteristics:stage HI/IV,lymphocyte monocyte ratio(LMR)upper limit of normal(ULN),albumin(ALB)dimer was significantly decreased concomitantly with *** univariate regression analysis showed that the overall survival(OS)was negatively affected by the following factors:age>60 years,stage m/IV,LDH>ULN,LMRdimer>*** analysis showed that only LDH>ULN(P=0.038)and age>60 years(P=0.047)were independent adverse prognostic ***,it was suggested that D-dimer could be regarded as a marker of high tumor burden and a potential prognostic screening tool for patients with DLBCL,not otherwise specified(NOS).

关键词： diffuse large B-cell lymphoma D-dimer prognosis

β-Elemene induces apoptosis and autophagy in colorectal cancer cells through regulating the ROS/AMPK/mTOR pathway

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Chinese Journal of Natural Medicines 2022年第1期20卷 9-21页

作者： WANG Guo-Yu ZHANG Lei geng Ya-di WANG Bin FENG Xiao-Jun CHEN Zhao-Lin WEI Wei JIANG Ling Department of Pharmacy the First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui230001China Institute of Clinical Pharmacology Anhui Medical UniversityHefei 230001China Department of Pharmacy Hefei Cancer HospitalChinese Academy of SciencesHefei 230031China

β-Elemene is an effective anti-cancer ingredient extracted from the genus Curcuma(Zingiberaceae familiy).In the present study,we demonstrated thatβ-elemene inhibited the proliferation of colorectal cancer cells and induced cell cycle arrest in the G2/M *** addition,β-elemene induced nuclear chromatin condensation and cell membrane phosphatidylserine eversion,decreased cell mitochondrial membrane potential,and promoted the cleavage of caspase-3,caspase-9 and PARP proteins,indicating apoptosis in colorectal cancer *** the same time,β-elemene induced autophagy response,and the treated cells showed autophagic vesicle bilayer membrane structure,which was accompanied by up-regulation of the expression of LC3B and ***,β-elemene increased ROS levels in colorectal cancer cells,promoted phosphorylation of AMPK protein,and inhibited mTOR protein *** the experiments in vivo,β-elemene inhibited the tumor size and induced apoptosis and autophagy in nude *** summary,β-elemene inhibited the occurrence and development of colon cancer xenografts in nude mice,and significantly induced apoptosis and autophagy in colorectal cancer cells in *** effects were associated with regulation of the ROS/AMPK/mTOR *** offered a molecular basis for the development ofβ-elemene as a promising anti-tumor drug candidate for colorectal cancer.

关键词： β-Elemene Colorectal cancer Apoptosis Autophagy AMPK mTOR

Thermoelectric properties of S-substituted BiCuSeO at O sites:First-principles study

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Science China(Physics,Mechanics & Astronomy) 2020年第1期63卷 122-125页

作者： Gui Yang QingXiu Yu HuiJuan geng YuanXu Wang School of Physics and Electrical Engineering Anyang Normal UniversityAnyang 455000China Institute far Computational Materials Science School of Physics and ElectronicsHenan UniversityKaifeng 475004China

The conversion efficiency of a thermoelectric(TE)device is dependent on the dimensionless figure of merit defined as ZT=S^2σT/k,where T is absolute temperature.

关键词： temperature. substituted absolute

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Effect of a thermokarst lake on soil physical properties and infiltration processes in the permafrost region of the Qinghai-Tibet Plateau, China

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Science China Earth Sciences 2014年第10期57卷 2357-2365页

作者： WANG YiBo GAO ZeYong WEN Jing LIU GuoHua geng di LI XiaoBing College of Earth and Environment Sciences Lanzhou University MOE Key Laboratory of Western China's Environmental Systems Lanzhou University State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences College of Atmospheric Sciences Lanzhou University

Changes in the hydrological processes in alpine soil constitute one of the several key problems encountered with studying watershed hydrology and ecosystem stability against the background of global warming. A typically developing thermokarst lake was chosen as a subject for a study using model simulation based on observations of soil physical properties, infiltration processes, and soil moisture. The results showed that the selected thermokarst lake imposed certain changes on the soil infiltration processes and, with the degree of impact intensifying, the initial infiltration rate decreased. The greatest reduction was achieved in the area of moderate impact. However, the stable infiltration rate and cumulative infiltration gradually increased in the surface layer at a depth of 10 and 20 cm, both decreasing initially and then increasing, which is correlated significantly with soil textures. Moreover, the cumulative infiltration changed in line with steady infiltration rate. Based on a comparative analysis, the Horton model helps better understand the effect on the soil infiltration processes of the cold alpine meadow close to the chosen thermokarst lake. In conclusion, the formation of the thermokarst lake reduced the water holding capacity of the alpine meadow soil and caused the hydraulic conductivity to increase, resulting in the reduction of runoff capacity in the area of the thermokarst lake.

关键词： Qinghai-Tibet Plateau thermokarst lake soil infiltration simulation

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Insight into excitation wavelength and hotspot effect of noble metal nanoparticles dimer

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Optoelectronics Letters 2021年第10期17卷 577-580页

作者： MA Aning WEI Wenjing LI Guojian WANG Yurong geng di ZHANG Zhongqiang School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China China Mobile Communication Corporation Lanzhou 730000China School of Electrical Engineering Northwest Minzu UniversityLanzhou 730030China

A proper excitation wavelength and strong hot-spot effect are of great importance for the application of surface-enhanced Raman spectroscopy(SERS)in the field of *** a popular SERS substrate,noble metal nanoparticles dimer is analyzed systematically in this *** hot-spot effect and the resonance peak position with varying geometric parameters of metal nanoparticles are ***,the excitation wavelength of bimetallic structure is discussed as *** conclusions can provide reference for the selection of metal material at different excitation wavelengths.

关键词： excitation noble dimer