检索结果-南通市图书馆

Alternative technology for the recovery of butyl acetate with low concentration:high capacity adsorbent and high efficiency adsorption

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Chemical Engineering 2024年第2期5卷 236-244页

作者： Chi Ma Lihong Zhao Zhengxin Mao hao su Qingfen Liu CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China

Industrial pharmaceutical wastewater usually contains butyl acetate(BA)with a concentration of 1 wt%-7 wt%,and the traditional method for BA recovery is distillation with high energy *** method is developed to recover BA with low concentration for the high efficiency and low energy *** polar polyacrylate resins with macroporous structure of 233.1 nm and average particle size of about 526.5μm are successfully synthesized by suspension polymerization and used for the BA adsorption and *** maximum adsorption capacity reaches 171.1 mg g^(-1)with relative standard deviation(RSD)value of 0.2%,which is more than twice the results in the *** BA desorption rate is 97.0%at 100℃with RSD value of 0.4%,and the resins are beneficial to the reuse in the adsorption-desorption *** adsorption thermodynamics and kinetics are investigated,and the BA adsorption is a spontaneous and endothermic process with the increase of disorder *** process is mainly contributed by physical absorption and agree well with Freundlich model and pseudo-first-order adsorption kinetic *** adsorption method avoids boiling a large amount of wastewater and hopefully provides a novel alternative technology for the BA recovery.

关键词： Butyl acetate recovery Resin adsorption Desorption Thermodynamics Kinetics

An audio‐based risky flight detection framework for quadrotors

在线全文

学校读者我要写书评

暂无评论

IET Cyber-Systems and Robotics 2024年第1期6卷 1-14页

作者： Wansong Liu Chang Liu Seyedomid Sajedi hao su Xiao Liang Minghui Zheng Department of Mechanical and Aerospace Engineering University at BuffaloBuffaloNew YorkUSA Department of Civil Structural and Environmental EngineeringUniversity at BuffaloBuffaloNew YorkUSA Department of Mechanical and Aerospace Engineering North Carolina State UniversityRaleighNorth CarolinaUSA

Drones have increasingly collaborated with human workers in some workspaces,such as *** failure of a drone flight may bring potential risks to human beings'life safety during some aerial *** of the most common flight failures is triggered by damaged *** quickly detect physical damage to propellers,recognise risky flights,and provide early warnings to surrounding human workers,a new and compre-hensive fault diagnosis framework is presented that uses only the audio caused by pro-peller rotation without accessing any flight *** diagnosis framework includes three components:leverage convolutional neural networks,transfer learning,and Bayesian ***,the audio signal from an actual flight is collected and trans-ferred into time–frequency ***,a convolutional neural network‐based diagnosis model that utilises these spectrograms is developed to identify whether there is any broken propeller involved in a specific drone ***,the authors employ Monte Carlo dropout sampling to obtain the inconsistency of diagnostic results and compute the mean probability score vector's entropy(uncertainty)as another factor to diagnose the drone ***,to reduce data dependence on different drone types,the convolutional neural network‐based diagnosis model is further augmented by transfer *** is,the knowledge of a well‐trained diagnosis model is refined by using a small set of data from a different *** modified diagnosis model has the ability to detect the broken propeller of the second ***,to reduce the hyperparameters'tuning efforts and reinforce the robustness of the network,Bayesian optimisation takes advantage of the observed diagnosis model performances to construct a Gaussian pro-cess model that allows the acquisition function to choose the optimal network *** proposed diagnosis framework is validated via real experimental flight tests and has a reasonably hig

关键词： aerial robotics deep learning flying robots propeller diagnosis

Non-destructive electroluminescence inspection for LED epitaxial wafers based on soft single-contact operation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2024年第8期12卷 1776-1784页

作者： hao su JIAWEN QIU JUNLONG LI RONG CHEN JIANBI LE XIAOYANG LEI YONGAI ZHANG XIONGTU ZHOU TAILIANG GUO ChaoXING WU School of Physics and Information Engineering Fuzhou UniversityFuzhou 350000China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Fujian Inspection and Research Institute for Product Quality Fuzhou 350002China

Non-destructive and accurate inspection of gallium nitride light-emitting diode(Ga N-LED)epitaxial wafers is important to Ga N-LED ***,the conventional electroluminescence inspection,the photoluminescence inspection,and the automated optical inspection cannot fulfill the complex technical *** this work,an inspection method and an operation system based on soft single-contact operation,namely,single-contact electroluminescence(SC-EL)inspection,are *** key component of the SC-EL inspection system is a soft conductive probe with an optical fiber inside,and an AC voltage(70Vpp,100 k Hz)is applied between the probe and the ITO electrode under the LED epitaxial *** proposed SC-EL inspection can measure both the electrical and optical parameters of the LED epitaxial wafer at the same time,while not causing mechanical damage to the LED epitaxial ***,it is demonstrated that the SC-EL inspection has a higher electroluminescence wavelength accuracy than photoluminescence *** results show that the non-uniformity of SC-EL inspection is 444.64%,which is much lower than that of photoluminescence *** addition,the obtained electrical parameters from SC-EL can reflect the reverse leakage current(Is)level of the LED epitaxial *** proposed SC-EL inspection can ensure high inspection accuracy without causing damage to the LED epitaxial wafer,which holds promising application in LED technology.

关键词： electroluminescence operation epitaxial

Designing Symmetric Gradient Honeycomb Structures with Carbon‑Coated Iron‑Based Composites for High‑Efficiency Microwave Absorption

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第11期16卷 224-241页

作者： Yu Zhang Shu‑hao Yang Yue Xin Bo Cai Peng‑Fei Hu Hai‑Yang Dai Chen‑Ming Liang Yun‑Tong Meng Ji‑hao su Xiao‑Juan Zhang Min Lu Guang‑Sheng Wang School of Chemistry Beihang UniversityBeijing 100191People’s Republic of China School of Electronics and Information Zhengzhou University of Light IndustryZhengzhou 450002People’s Republic of China School of Chemical Engineering Northeast Electric Power UniversityJilin 132000People’s Republic of China College of Chemistry and Materials Engineering Beijing Technology and Business UniversityBeijing 100048People’s Republic of China

The impedance matching of absorbers is a vital factor affecting their microwave absorption(MA)*** this work,we controllably synthesized Material of Institute Lavoisier 88C(MIL-88C)with varying aspect ratios(AR)as a precursor by regulating oil bath conditions,followed by one-step thermal decomposition to obtain carbon-coated iron-based *** the precursor MIL-88C(Fe)preparation conditions,such as the molar ratio between metal ions and organic ligands(M/O),oil bath temperature,and oil bath time,influenced the phases,graphitization degree,and AR of the derivatives,enabling low filler loading,achieving well-matched impedance,and ensuring outstanding MA *** MOF-derivatives 2(MD_(2))/polyvinylidene Difluoride(PVDF),MD_(3)/PVDF,and MD4/PVDF absorbers all exhibited excellent MA properties with optimal filler loadings below 20 wt%and as low as 5 wt%.The MD_(2)/PVDF(5 wt%)achieved a maximum effective absorption bandwidth(EAB)of 5.52 GHz(1.90 mm).The MD_(3)/PVDF(10 wt%)possessed a minimum reflection loss(RL_(min))value of−67.4 at 12.56 GHz(2.13 mm).A symmetric gradient honeycomb structure(SGHS)was constructed utilizing the high-frequency structure simulator(HFSS)to further extend the EAB,achieving an EAB of 14.6 GHz and a RL_(min) of−59.0 *** research offers a viable inspiration to creating structures or materials with high-efficiency MA properties.

关键词： MIL-88C(Fe) Fe/Fe_(3)O_(4)/Fe_(3)C@C Controllable preparation Symmetric gradient honeycomb structure Microwave absorbing

Mechanisms of resistance to trastuzumab in HER2-positive gastric cancer

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2024年第3期36卷 306-321页

作者： Zhifei Li Huan Zhao Huihui Hu Haili Shang Yongjing Ren Wenhui Qiu hao su Huifang Lyu Xiaobing Chen Department of Oncology the Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalHenan Engineering Research Center of Precision Therapy of Gastrointestinal CancerZhengzhou Key Laboratory for Precision Therapy of Gastrointestinal CancerZhengzhou 450008China Henan University of Traditional Chinese Medicine Zhengzhou 450046China State Key Laboratory of Esophageal Cancer Prevention&Treatment Key Laboratory of Advanced Drug Preparation TechnologiesMinistry of EducationSchool of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China The First Affiliated Hospital of Xinxiang Medical University Xinxiang 453000China Department of Oncology the Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalZhengzhou 450008China

Gastric cancer is one of the most prevalent cancers worldwide,and human epidermal growth factor receptor 2(HER2)-positive cases account for approximately 20%of the total ***,trastuzumab+chemotherapy is the recommended first-line treatment for patients with HER2-positive advanced gastric cancer,and the combination has exhibited definite efficacy in HER2-targeted ***,the emergence of drug resistance during treatment considerably reduces its effectiveness;thus,it is imperative to investigate the potential mechanisms underlying *** the present review article,we comprehensively introduce multiple mechanisms underlying resistance to trastuzumab in HER2-positive gastric cancer cases,aiming to provide insights for rectifying issues associated with resistance to trastuzumab and devising subsequent treatment strategies.

关键词： HER2 gastric cancer trastuzumab drug resistance

3D modeling for effect of tool eccentricity on coupled thermal and material flow characteristics during friction stir welding

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2024年第10期34卷 3309-3325页

作者： hao su Ji CHEN Chuan-song WU Key Laboratory for Liquid−Solid Structural Evolution&Processing of Materials Ministry of EducationInstitute for Materials JoiningShandong UniversityJinan 250061China

A novel three-dimensional numerical model is proposed to investigate the effect of tool eccentricity on the coupled thermal and material flow characteristics in friction stir welding(FSW) *** asymmetrical boundary condition at the tool-workpiece interface,and the dynamic mesh technique are both employed for the consideration of the tool eccentricity during tool *** is found that tool eccentricity induces the periodical variation of the heat densities both at the tool-workpiece interface and inside the shear layer,but the fluctuation amplitudes of the heat density variations are ***,it is demonstrated that tool eccentricity results in significant variation of the material flow behavior in one tool rotating ***,the material velocity variation at the retreating side is particularly important for the formation of the periodic characteristics in *** modeling result is found to be in good agreement with the experimental one.

关键词： friction stir welding tool eccentricity thermal behavior periodic material flow numerical simulation

在线全文

学校读者我要写书评

暂无评论

作为国族名的“祭”字补说

华夏考古 2024年第4期 157-160页

作者：苏浩中国艺术研究院中国文化研究所北京市100029

传世文献记载的先秦时期作为国族名的“祭”,在西周铜器铭文中作“溓”,而出土的战国楚简则写作“晋”“箭”诸形。器铭和楚简中此字均从“兼”得声,与传世文献中作为国族名的“祭”字存在音韵假借关系。战国楚简诸字为厘析周公之胤的... 详细信息

传世文献记载的先秦时期作为国族名的“祭”,在西周铜器铭文中作“溓”,而出土的战国楚简则写作“晋”“箭”诸形。器铭和楚简中此字均从“兼”得声,与传世文献中作为国族名的“祭”字存在音韵假借关系。战国楚简诸字为厘析周公之胤的祭国相关器物提供了宝贵材料。

关键词：祭晋兼国族名

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

冷喷涂中氧化物影响的物质点法模拟

计算力学学报 2024年第5期41卷 857-863页

作者：陈聪苏浩刘岩清华大学航天航空学院北京100084

冷喷涂利用冲击载荷下材料的塑性变形实现金属间的固态结合,在表面修复、特殊材料制备和增材制造等工程应用方面具有重要意义。原材料表面的氧化物是影响冷喷涂中材料结合效率和粘接强度的重要因素之一。本文采用物质点法研究了颗粒及... 详细信息

冷喷涂利用冲击载荷下材料的塑性变形实现金属间的固态结合,在表面修复、特殊材料制备和增材制造等工程应用方面具有重要意义。原材料表面的氧化物是影响冷喷涂中材料结合效率和粘接强度的重要因素之一。本文采用物质点法研究了颗粒及基底表面氧化物对粘接过程的影响。通过分析界面处氧化物的残留情况,借助定义的颗粒内极端塑性变形区的体积比,给出了不同冲击速度下颗粒和基底氧化物对接触面积和塑性变形程度的影响规律。当氧化物存在时,提高颗粒的冲击速度能够同时增加新鲜的金属表面和塑性变形。

关键词：冷喷涂氧化物物质点法增材制造

维普期刊数据库博看期刊

片仔癀通过调节小鼠的肠道菌群和代谢物抑制非酒精性脂肪性肝炎

在线全文

学校读者我要写书评

暂无评论

Engineering 2024年第4期35卷 257-269页

作者： Xianyi Zeng Xiang Zhang hao su Hongyan Gou Harry Cheuk-Hay Lau Xiaoxu Hu Ziheng Huang Yan Li Jun Yu Shenzhen Research Institute The Chinese University of Hong KongShenzhen 518057China Department of Medicine and Therapeutics Institute of Digestive DiseaseState Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong 999077China

Non-alcoholic steatohepatitis(NASH)is a severe form of non-alcoholic fatty liver disease without effective *** traditional Chinese medicine formulation Pien Tze Huang(PTH)can suppress inflammatory ***,we evaluate the effects of PTH on the evolution of NASH and its underlying *** found that PTH prevented the development of steatohepatitis induced by various dietary models,including a high-fat high-cholesterol(HFHC)diet,choline-deficient high-fat diet(CD-HFD),and methionine-and choline-deficient(MCD)diet,along with significant suppression of liver injury,hepatic triglyceride,and lipid ***,ten days of PTH treatment after the onset of NASH significantly ameliorated MCD diet-induced steatosis and liver injury in *** the metagenomic sequencing of stool samples,we found that PTH administration restored the gut microbiota with enrichment of probiotics including Lactobacillus acidophilus(***),Lactobacillus plantarum,Lactococcus lactis,and Bacillus *** enriched *** prevented MCD diet-induced *** addition,PTH restored the gut barrier function in mice with steatohepatitis,as evidenced by reduced intestinal permeability,decreased serum lipopolysaccharides(LPS)level,and increased epithelial tightjunction protein E-cadherin *** metabolomic analysis via liquid chromatography-mass spectrometry profiling identified the alteration in the metabolism of bile acids in the portal vein of PTHtreated *** further confirmed that an intact gut microbiota is necessary for PTH to exhibit antisteatohepatitis *** conclusion,PTH protects against steatohepatitis development by modulating the gut microbiota and *** is a potential promising prophylactic and therapeutic option for patients with NASH.

关键词： Pien Tze Huang Non-alcoholic steatohepatitis Gut barrier function Gut microbiota