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Neurotransmitters regulateβcells insulin secretion:A neglected factor

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World Journal of Clinical Cases 2023年第28期11卷 6670-6679页

作者： chu-chu Kong Ji-Dong cheng Wei Wang Department of Endocrinology Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen 361100Fujian ProvinceChina

βcells are the main cells responsible for the hypoglycemic function of pancreatic islets,and the insulin secreted by these cells is the only hormone that lowers blood glucose levels in the human body.βcells are regulated by various factors,among which neurotransmitters make an important *** paper discusses the effects of neurotransmitters secreted by various sympathetic and parasympathetic nerves onβcells and summarizes the mechanisms by which various neurotransmitters regulate insulin *** neurotransmitters do not have a single source and are not only released from nerve terminals but also synthesized byβcells themselves,allowing them to synergistically regulate insulin *** all of these neurotransmitters depend on the presence of glucose to function,and their actions are mostly related to the Ca^(2+)and cAMP *** neurotransmitters have been extensively studied,many of their mechanisms remain unclear and require further exploration by researchers.

关键词： βcells Insulin secretion Neurology Type 2 diabetes Islet

Classification and a decade-long follow-up of rat bite injuries in the nasal region

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第1期6卷 28-33页

作者： chu-hsin Chen Yahong Chen Peng Xu Kai Liu Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China Department of Plastic Surgery Shanghai Industrial Investment(Holding)Company Limited Medical CosmetologyShanghai 200011China

Background:Nasal defects due to rat bites are frequently encountered in rural regions of *** addition to serving as disease vectors,rats can also inflict bite *** this study,we delineated the characteristics of rat bite injuries in the nasal region and discussed the clinical features observed during a 10-year follow-up ***:We retrospectively reviewed hospital records for patients admitted due to rat *** study outlines the demographics,clinical features,and follow-up outcomes supported by comprehensive photo documentation of the patients’***:Twenty-five patients,with a mean age of 29 years,were admitted due to rat *** was provided for three distinct types of injuries:nasal tip defect(type Ⅰ),nasal defect(type Ⅱ),and full-thickness nasal defect with loss of surrounding tissues(type Ⅲ).All patients recovered ***:The treatment for rat bites should be based on the wound *** long-term follow-up outcomes are more favorable when fewer subunits of the nose *** recommend early surgical intervention,along with psychological therapy,to prevent interference with growth and development.

关键词： Rat bite Wound classification Nasal reconstruction

Geochemistry and geochronology of multi-generation garnet:New insights on the genesis and fluid evolution of prograde skarn formation

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Geoscience Frontiers 2023年第1期14卷 360-371页

作者： Gaobin chu Huayong Chen Shitao Zhang Yu Zhang Jiamin cheng CAS Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou 510640China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi'an 710069China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor Central South UniversityChangsha 410083China University of Chinese Academy of Sciences Beijing 100049China

Origin of garnet in skarn(magmatic ***)and the prograde skarn fluid evolution are still *** generations of garnet(Grt1,Grt2)were identified at the Tongshankou deposit:Grt1 is anisotropic with oscillatory zoning and resorbed boundary,whilst Grt2 grew around Grt1 and formed oscillatory ***-situ LA-ICP-MS U-Pb dating of Grt1 and Grt2 yielded a lower intercept^(206)Pb/^(238)U age of 142.4±2.8 Ma(n=57;MSWD=1.16)and 142.3±9.6 Ma(n=60;MSWD=1.06),respectively,coeval with the ore formation and ore-related granodiorite *** Eu anomaly,non-CHARAC Y/Ho value and low TiO_(2)content,together with the mineral assemblages indicate that both Grtl and Grt2 have a hydrothermal *** existence of melt and melt-fluid inclusions in Grt1,together with similar LREE-enriched patterns to the granodiorite,further indicate that Grt1 may have formed in the magmatic-hydrothermal *** U contents and LREE-enriched patterns of Grt1 indicate that fluid I is mildly acidic pH and low fO_(2).The inner gray Grt2 rims(Grt2A)is HREE-enriched with low U contents,indicating that fluid II has nearly neutral pH and high fO_(2).The wider Y/Ho range and LREE-enriched patterns of the outer light-gray Grt2 rims(Grt2B)show that the evolved magmatic fluidⅡhad mixed with an external fluid,characterized by being mildly acidic pH and with high fO_(2)·Our results suggest that the prograde skarn-forming fluids can be multistage at Tongshankou,and the mixing of meteoric water may have been prominent in the prograde skarn stage.

关键词： Multi-generation garnet Mineral chemistry LA-ICP-MS U-Pb dating Fluid evolution Prograde skarn

Fundamental research on recovering metals from hot-dip Zn-Al-Mg dross by supergravity separation

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Journal of Iron and Steel Research International 2023年第7期30卷 1324-1333页

作者： Ren-sheng chu Zhe Wang Xiao-xuan Deng Ning-jie Sun cheng-liang Xu Zhan-cheng Guo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Research Institute of Technology Shougang Group Co.Ltd.Beijing 100043China

The dross generated in the hot-dip Zn–Al–Mg coating process is a valuable co-product,since it contains high quantities of recyclable alloy.A new method to recover Zn–Al–Mg alloy from the industrial Zn–Al–Mg dross was proposed using supergravity *** separation efficiency was analyzed as a function of gravity coefficient(G),separation time,and separation *** separation of Zn–Al–Mg alloy from the dross can be achieved at G>*** alloy content in the dross decreased gradually with an increase in the gravity coefficient,the separation time,and the separation *** alloy ratio in the enriched dross decreased almost linearly as the gravity coefficient increased,and the recovery of Zn–Al–Mg alloy from the dross exceeded 78%;these results were consistent with the results of the FactSage software *** purified alloy can be in-situ used in the hot-dip Zn–Al–Mg bath for *** feasibility of supergravity separation as a promising process for efficiently recovering Zn–Al–Mg alloy from Zn–Al–Mg dross was thus demonstrated.

关键词： Zn–Al–Mg alloy Supergravity Recovery Hot-dip dross Separation

Surface tuning of LaCoO_(3) perovskite by acid etching to enhance its catalytic performance

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Rare Metals 2021年第3期40卷 555-562页

作者： Lu Dai Xin-Bo Lu Guo-Hai chu cheng-Huan He Wang-cheng Zhan Guo-Jun Zhou China Tobacco Zhejiang Industrial Co. LtdHangzhou 310024China Research Institute Catalysis School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

The stoichiometric LaCoO_(3) and nonstoichiometric LaCo_(1.2)O_(3) perovskite catalysts were prepared by citric acid sol-gel method,and then,LaCoO_(3) perovskite was etched with nitric *** structure,surface composition and reducibility of the catalyst were studied by X-ray diffraction(XRD),nitrogen desorption,transmission electron microscope(TEM),temperature program reduction of H_(2)(H_(2)-TPR) and X-ray photoelectron spectroscopy(XPS).It was found that nitric acid etching did not change the crystal structure and the overall morphology of the LaCoO_(3) catalyst,but it can cause the exposure of B-site Co metal to the surface of the *** a result,after acid etching,the reducibility of the LaCoO_(3) catalyst was improved,leading to the improvement in the catalytic activity of the LaCoO_(3) catalyst for CO oxidation and C_(3)H_(8) ***,the catalytic activity of the LaCoO_(3) catalyst after acid etching was higher than that of LaCo_(1.2)O_(3) and CoOx/LaCoO_(3) catalyst.

关键词： Perovskite oxide Acid etching CO oxidation Propane combustion

Shallow water bathymetry based on a back propagation neural network and ensemble learning using multispectral satellite imagery

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Acta Oceanologica Sinica 2023年第5期42卷 154-165页

作者： Sensen chu Liang cheng Jian cheng Xuedong Zhang Jie Zhang Jiabing Chen Jinming Liu Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology Nanjing UniversityNanjing 210023China Collaborative Innovation Center of South China Sea Studies Nanjing UniversityNanjing 210093China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Novel Software Technology and Industrialization Nanjing 210023China Zhejiang Institute of Hydraulics and Estuary Hangzhou 310020China Institute of Defense Engineering Academy of Military SciencesBeijing 100036China

The back propagation(BP)neural network method is widely used in bathymetry based on multispectral satellite ***,the classical BP neural network method faces a potential problem because it easily falls into a local minimum,leading to model training *** study confirmed that the local minimum problem of the BP neural network method exists in the bathymetry field and cannot be ***,to solve the local minimum problem of the BP neural network method,a bathymetry method based on a BP neural network and ensemble learning(BPEL)is ***,the remote sensing imagery and training sample were used as input datasets,and the BP method was used as the base learner to produce multiple water depth inversion ***,a new ensemble strategy,namely the minimum outlying degree method,was proposed and used to integrate the water depth inversion ***,an ensemble bathymetric map was *** Reef,northeastern Jiuzhang Atoll,and Pingtan coastal zone were selected as test cases to validate the proposed *** with the BP neural network method,the root-mean-square error and the average relative error of the BPEL method can reduce by 0.65–2.84 m and 16%–46%in the three test cases at *** results showed that the proposed BPEL method could solve the local minimum problem of the BP neural network method and obtain highly robust and accurate bathymetric maps.

关键词： bathymetry back propagation neural network ensemble learning local minimum problem multispectral satellite imagery

Hyperbolic metamaterial using chiral molecules

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Science China(Physics,Mechanics & Astronomy) 2020年第6期63卷 13-21页

作者： JieXing Zhao JingJing cheng YingQi chu YanXiang Wang FuGuo Deng Qing Ai Department of Physics Applied Optics Beijing Area Major LaboratoryBeijing Normal UniversityBeijing 100875China NAAM-Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

We theoretically investigate the intra-band transitions in Mobius *** to the weak magnetic response,the relative permittivity is significantly modified by the presence of the medium while the relative permeability is *** show that there is hyperbolic dispersion relation induced by the intra-band transitions because one of the eigen-values of permittivity possesses a different sign from the other two,while all three eigen-values of permeability are *** further demonstrate that the bandwidth of negative refraction is 0.165 eV for the H-polarized incident light,which is broader than the ones for inter-band transitions by 3 orders of ***,the frequency domain has been shifted from ultra-violet to visible *** there is negative refraction for the E-polarized incident light,the bandwidth is much narrower and depends on the incident angle.

关键词： negative refraction hyperbolic dispersion Mobius molecules visible light broad bandwidth

Bioinspired Polarized Optical Flow Enables Turbid Underwater Target Motion Estimation

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Journal of Ocean University of China 2024年第4期23卷 915-923页

作者： cheng Haoyuan ZHAO Shujie ZHU Jinchi YU Hao chu Jinkui College of Engineering Ocean University of ChinaQingdao 266100China Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of TechnologyDalian 116024China

Underwater target motion estimation is a challenge for ocean military and scientific *** this work,we propose a method based on the combination of polarization imaging and optical flow for turbid underwater target *** imaging can reduce the influence of backscattered light and obtain high-quality images *** optical flow shows the motion and structural information of the *** use polarized optical flow to obtain the optical flow field and estimate the target *** experimental results of different targets under varying water turbidity levels illustrate that our method is realizable and *** precision is verified by comparing the results with the precise displacement data and calculating two error *** proposed method based on polarized optical flow can obtain accurate displacement information and a good recognition *** target segmentation based on the Otsu method further proves the superiority of the polarized optical flow under turbid *** study is valuable for target detection and motion estimation in scattering environments.

关键词： turbid underwater motion estimation polarization imaging optical flow

Real-Time Position and Attitude Estimation for Homing and Docking of an Autonomous Underwater Vehicle Based on Bionic Polarized Optical Guidance

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Journal of Ocean University of China 2020年第5期19卷 1042-1050页

作者： cheng Haoyuan chu Jinkui ZHANG Ran GUI Xinyuan TIAN Lianbiao The Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of TechnologyDalian 116024China

As an important tool for marine exploration, the autonomous underwater vehicle(AUV) must home in and dock at a docking station(DS) to be recharged, repaired, or to exchange information at set intervals. However, the complex and hostile underwater environment makes this process challenging. This study proposes a real-time method based on polarized optical guidance for determining the position and attitude of the AUV relative to its DS. Four polarized artificial underwater landmarks are positioned at the DS, which are recognized by the AUV vision system. Compared with light intensity, the polarization of a light beam is known to be better maintained at greater propagation distances, especially in underwater environments. The proposed method, which is inspired by the ability of marine animals to communicate, calculates the pose parameters in less than 10 ms without any other navigational information. The simulation results reveal that the angle errors are small and the position errors are no more than 0.116 m within 100 m in the coastal ocean. The results of underwater experiments further demonstrate the feasibility of the proposed method, which extends the operating distance of the AUV beyond what is currently possible while maintaining the precision of traditional optical guidance.

关键词： polarization optical guidance AUV underwater docking position and attitude estimation