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工质进排气单向阀平衡孔孔径对热气机性能影响的试验研究

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柴油机 2007年第6期29卷 44-48页

作者：龚欢吴惠忠李勇杰黄有明潘卫明上海齐耀动力技术有限公司上海201203 七一一研究所上海200011

对热气机工质进排气单向阀平衡孔作了简介。通过改变平衡孔的大小进行了一系列试验,并从工质排气、进气压力比、转速差等角度进行分析,探讨平衡孔大小对热气机性能的影响。试验结果可应用于进一步了解、改进热气机以及热气机的故障诊断... 详细信息

对热气机工质进排气单向阀平衡孔作了简介。通过改变平衡孔的大小进行了一系列试验,并从工质排气、进气压力比、转速差等角度进行分析,探讨平衡孔大小对热气机性能的影响。试验结果可应用于进一步了解、改进热气机以及热气机的故障诊断分析。

关键词：热气机进排气单向阀平衡孔

Challenges in the management of visual and tactile hallucinations in elderly people

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World Journal of Psychiatry 2025年第1期15卷 185-188页

作者： Si-Sheng huang Division of Geriatric Psychiatry Department of PsychiatryChanghua Christian HospitalChanghua 500Taiwan Department of Post-Baccalaureate Medicine College of MedicineNational Chung Hsing UniversityTaichung 402Taiwan

This letter provides a concise review of the pertinent literature on visual and tactile hallucinations in elderly *** discussion addresses differential diagnoses and potential underlying mechanisms,as well as the psychopathology associated with tactile hallucinations,and emphasizes the necessity for invest-igation into the possibility of coexisting delusional infestation(parasitosis).These symptoms frequently manifest in patients with primary psychotic disorders,organic mental disorders,and substance use *** proposed pathophy-siological mechanisms may involve dopaminergic imbalances and dysfunction of the striatal dopamine transporter.

关键词： Delusional infestation Dementia Haptic hallucination Scratching behavior Tactile hallucination Visual hallucination Alzheimer’s disease

基于氧化钴/石墨烯修饰电极检测畜禽饮用水中铅离子的研究

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热带农业工程 2017年第2期41卷 7-11页

作者：李智丽刘佑明黄兴国廖洁丹黄淑坚赵云翔佛山科学技术学院生命科学与工程学院广东佛山528000

采用两步电化学沉淀制备氧化钴/石墨烯修饰电极,通过循环伏安法对该电极进行表征,并研究铅离子在修饰电极上的电化学行为。结果表明,该复合材料修饰的工作电极的灵敏度与导电性增强;在0.1 mol/L PBS缓冲溶液(pH 5.0)中对铅离子的检测最... 详细信息

采用两步电化学沉淀制备氧化钴/石墨烯修饰电极,通过循环伏安法对该电极进行表征,并研究铅离子在修饰电极上的电化学行为。结果表明,该复合材料修饰的工作电极的灵敏度与导电性增强;在0.1 mol/L PBS缓冲溶液(pH 5.0)中对铅离子的检测最优;铅离子在1×10^(-8)-1×10^(-2)mol/L浓度范围内呈线性关系;信噪比为3时,检出限为7.5×10^(-9)mol/L。所构建的氧化钴/石墨烯修饰电极具有良好的灵敏度、稳定性和重现性,同时将所构建的复合材料修饰电极应用于养殖场畜禽饮用水中铅离子的检测。

关键词：石墨烯氧化钴循环伏安法铅离子

Preparation of FeCoNi medium entropy alloy from Fe^(3+)-Co^(2+)-Ni^(2+)solution system

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 92-101页

作者： Zongyou Cheng Qing Zhao Mengjie Tao Jijun Du Xingxi huang Chengjun Liu Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

In recent years,medium entropy alloys have become a research hotspot due to their excellent physical and chemical *** controlling reasonable elemental composition and processing parameters,the medium entropy alloys can exhibit similar properties to high entropy alloys and have lower *** this paper,a FeCoNi medium entropy alloy precursor was prepared via sol-gel and coprecipitation methods,respectively,and FeCoNi medium entropy alloys were prepared by carbothermal and hydrogen *** phases and magnetic properties of FeCoNi medium entropy alloy were *** showed that FeCoNi medium entropy alloy was produced by carbothermal and hydrogen reduction at 1500℃.Some carbon was detected in the FeCoNi medium entropy alloy prepared by carbothermal *** alloy prepared by hydrogen reduction was uniform and showed a relatively high ***,the hydrogen reduction product exhibited better saturation magnetization and lower coercivity.

关键词： medium entropy alloy sol-gel co-precipitation carbothermal hydrogen reduction

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SD-3A测氡仪观测故障及解决方法

防灾科技学院学报 2011年第2期13卷 62-65页

作者：刘就英何其武赖细华李志军黄友明新丰江中心地震台广东河源517021

以河源4#SD-3A测氡仪观测原理、运行性能为研究对象,结合几年来所发生的观测故障状况,在观测及维护过程分析SD-3A测氡仪故障原因,对测氡仪发生故障时采取相应的解决方法,进而熟练掌握测氡仪观测特性并及时解决实际操作难题。

关键词：气氡观测技术故障分析

Exploring the performance of large language models on hepatitis B infection-related questions:A comparative study

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World Journal of Gastroenterology 2025年第3期31卷 103-112页

作者： Yu Li Chen-Kai huang Yi Hu Xiao-Dong Zhou Cong He Jia-Wei Zhong Department of Gastroenterology Jiangxi Provincial Key Laboratory of Digestive DiseasesJiangxi Clinical Research Center for GastroenterologyDigestive Disease HospitalThe First Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina HuanKui Academy Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Patients with hepatitis B virus(HBV)infection require chronic and personalized care to improve *** language models(LLMs)can potentially provide medical information for *** To examine the performance of three LLMs,ChatGPT-3.5,ChatGPT-4.0,and Google Gemini,in answering HBV-related *** LLMs’responses to HBV-related questions were independently graded by two medical professionals using a four-point accuracy scale,and disagreements were resolved by a third *** question was run three times using three *** was assessed via the Gunning Fog index and Flesch-Kincaid grade *** Overall,all three LLM chatbots achieved high average accuracy scores for subjective questions(ChatGPT-3.5:3.50;ChatGPT-4.0:3.69;Google Gemini:3.53,out of a maximum score of 4).With respect to objective questions,ChatGPT-4.0 achieved an 80.8%accuracy rate,compared with 62.9%for ChatGPT-3.5 and 73.1%for Google *** the six domains,ChatGPT-4.0 performed better in terms of diagnosis,whereas Google Gemini demonstrated excellent clinical ***,in the readability analysis,the mean Gunning Fog index and Flesch-Kincaid grade level scores of the three LLM chatbots were significantly higher than the standard level eight,far exceeding the reading level of the normal *** Our results highlight the potential of LLMs,especially ChatGPT-4.0,for delivering responses to HBV-related *** may be an adjunctive informational tool for patients and physicians to improve ***,current LLMs should not replace personalized treatment recommendations from physicians in the management of HBV infection.

关键词： ChatGPT-3.5 ChatGPT-4.0 Google Gemini Hepatitis B infection Accuracy

Deep eutectic solvents for separation and purification applications in critical metal metallurgy:Recent advances and perspectives

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 1-19页

作者： Shuo Chen Shengpeng Su Yanfang huang Bingbing Liu Hu Sun Shuzhen Yang Guihong Han School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals Laboratory Henan ProvinceZhengzhou 450001China

Solvent extraction,a separation and purification technology,is crucial in critical metal *** solvents commonly used in solvent extraction exhibit disadvantages,such as high volatility,high toxicity,and flammability,causing a spectrum of hazards to human health and environmental *** solvents have been recognized as potential alternatives to these harmful organic *** the past two decades,several neoteric solvents have been proposed,including ionic liquids(ILs)and deep eutectic solvents(DESs).DESs have gradually become the focus of green solvents owing to several advantages,namely,low toxicity,degradability,and low *** this critical review,their classification,formation mechanisms,preparation methods,characterization technologies,and special physicochemical properties based on the most recent advancements in research have been systematically ***,the major separation and purification applications of DESs in critical metal metallurgy were comprehensively ***,future opportunities and challenges of DESs were explored in the current research *** conclusion,this review provides valuable insights for improving our overall understanding of DESs,and it holds important potential for expanding separation and purification applications in critical metal metallurgy.

关键词： deep eutectic solvents preparations properties separation and purification critical metal metallurgy

Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili Zhang Yuefeng Yan Zhen Wang Guansheng Ma Dechang Jia Xiaoxiao huang Yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

A 0.7–7 GHz wideband reconfigurable receiver RF front-end in CMOS

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Journal of Semiconductors 2018年第8期39卷 77-80页

作者： youming Zhang Lijuan Yang Fengyi huang Nan Jiang Xuegang Zhang Institute of RF- & OE-ICs School of Information Science and Engineering Southeast University Nanjing 210096 China S-TEK (Shanghai) High-Frequency Communication Technology Co. Ltd. Shanghai 201203 China

A 0.7–7 GHz wideband RF receiver front-end So C is designed using the CMOS process. The front-end is composed of two main blocks: a single-ended wideband low noise amplifier（LNA） and an in-phase/quadrature（I/Q） voltage-driven passive mixer with IF amplifiers. Based on a self-biased resistive negative feedback topology,the LNA adopts shunt-peaking inductors and a gate inductor to boost the bandwidth. The passive down-conversion mixer includes two parts: passive switches and IF amplifiers. The measurement results show that the frontend works well at different LO frequencies, and this chip is reconfigurable among 0.7 to 7 GHz by tuning the LO frequency. The measured results under 2.5-GHz LO frequency show that the front-end SoC achieves a maximum conversion gain of 26 dB, a minimum noise figure（NF） of 3.2 dB, with an IF bandwidth of greater than 500 *** chip area is 1.67 × 1.08 mm;.

关键词： wideband LNA resistive-feedback CMOS passive mixer