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Journal of Palaeogeography 2019年第4期8卷 346-359页

作者： Wen-Tao huang Yong-Li Zhang Chang-Qing Guan Zhuo-Wei Miao xiao-Hong Chen Zhen-yuan Yang xiao Li En-Pu Gong College of Resources and Civil Engineering Northeastern UniversityShenyang 110819Liaoning ProvineeChina College of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004Hebei ProvineeChina

Various microbial fabrics characterize late Moscovian mounds in Houchang Town,southern Guizhou,South *** dominant components of the mounds are microbial boundstones with stromatolitic structures,irregular oncoid-like forms,and wrinkle *** recognized in the mounds include Girvanella,Ortonella,Wetheredella-like,Palaeomicrocodium-like,and some problematic calcimicrobes occurring in deposits between microbial boundstones,in thrombolitic textures,and in some *** carbonates are common in the substrate and interior of the mounds,including thrombolitic textures,microstromatolites,microbial ooids,oncoids,irregular encrusted layers,microbial mat debris,and microbial *** and microbial carbonates played an important role in the construction of the mounds:Girvanella might have contributed as a source of lime mud that formed the mound and stabilized the coral frame;thrombolitic mats could trap and fix sediments and bioclasts,contributing to the stabilization of substrate and mound limestones;and,microbial boundstone,clotted micrite and micritized bioclast could provide a hard substrate for encrusting metazoans(e.g.,bryozoans,Ivanovia).The abundant microbial fabrics in the mounds indicate that microbial activity was widespread in Moscovian reef mounds in southern Guizhou,and this suggests that microbial organisms were the primary mound builders in the study area.

关键词： Microfossils Microbial carbonates Mounds Late Carboniferous Moscovian Guizhou

颈椎前凸比率可作为多节段脊髓型颈椎病后路术式选择的决策指标

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中国组织工程研究 2025年第9期29卷 1796-1802页

作者：苗嘉航马胜李渠蓬余会林胡天宇高啸冯虎徐州医科大学附属医院江苏省徐州市221000

背景:目前仅有研究表明颈椎前凸比率可作为预测椎板成形术后前凸曲度丢失的重要因素,而颈椎前凸比率这一动力位指标是否可作为颈后路术式选择的决策因素之一尚无定论。目的:探讨颈椎过伸过屈位指标颈椎前凸比率这一动力位指标是否可以... 详细信息

背景:目前仅有研究表明颈椎前凸比率可作为预测椎板成形术后前凸曲度丢失的重要因素,而颈椎前凸比率这一动力位指标是否可作为颈后路术式选择的决策因素之一尚无定论。目的:探讨颈椎过伸过屈位指标颈椎前凸比率这一动力位指标是否可以作为椎板成形和椎板切除融合这两种术式的选择性指标。方法:回顾性分析2015年12月至2020年3月因多节段脊髓型颈椎病接受颈后路手术,且随访时间超过1年的141例患者,其中63例接受椎板切除融合治疗(椎板切除融合组),78例患者接受椎板成形治疗(椎板成形组),对比两组患者的人口统计学资料(性别、年龄、体质量指数、随访时间)、影像学指标(C_(2-7) Cobb角、C_(2-7)运动范围、屈曲位Cobb角、伸展位Cobb角、屈曲活动范围和伸展活动范围)及临床疗效(日本骨科协会评分、目测类比评分)。颈椎曲度变化的评估指标为术前、术后C_(2-7) Cobb角差值(ΔCL)。颈椎前凸比率=屈曲位活动范围/C_(2-7)活动范围×100%。采用受试者工作特征曲线分析颈椎前凸比率预测术后颈椎前凸曲度丢失过多(ΔCL≤-10°)的有效性。依据颈椎前凸比率的临界值(68.5%)将所有患者分为低比率组和高比率组,在不同比率组中再次对比两种术式之间的颈椎曲度指标和临床效果指标。结果与结论:①椎板切除融合和椎板成形术后颈椎前凸曲度均降低(P=0.039,P=0.002),椎板成形组的颈椎前凸曲度损失(ΔCL)大于椎板切除融合组,差异有显著性意义;②基于受试者工作特征曲线分析,颈椎前凸比率对预测颈椎前凸曲度丢失过多(ΔCL≤-10°)具有良好的鉴别能力(曲线下面积=0.792);③在低比率组中,椎板切除融合组和椎板成形组的颈椎前凸曲度变化ΔCL差异无显著性意义(P=0.141);④在高比率组中,椎板成形组的ΔCL大于椎板切除融合组(P=0.001),且椎板成形组发生术后前凸曲度丢失过多(ΔCL≤-10°)的概率更高(43%,29%);⑤提示颈椎前凸比率可作为多节段脊髓型颈椎病后路术式选择的决策指标,比率低的患者可考虑行椎板成形治疗,而对于高比率者,椎板切除融合对前凸的维持效果更佳。

关键词：多节段脊髓型颈椎病椎板成形椎板切除融合颈椎前凸比率动力位影像学指标术后颈椎前凸曲度

How to Use Artificial Intelligence to Evaluate Board Efficiency

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Journal of Artificial Intelligence and Technology 2024年第1期4卷 56-63页

作者： Nguyen Thi Thanh Binh huang Pin-yu Department of Accounting Chaoyang University of Technology168 Jifong E.RoadWufong DistrictTaichung City 41349TaiwanChina

The era of the technological revolution brought rapid changes in the way businesses are managed and operated with new *** study applies and develops artificial neural networks(ANNs)to predict the return on equity(ROE)and return on assets(ROA)based on data of the structure of the board of directors and managers of 839 Taiwan residents electronics firms listed on the Taiwan Stock Exchange for the period 2000 to *** results show that the characteristics of the board of directors and managers decide 64.25% of the value of the ROE and 67.05% of the *** results also show that the board with fewer members is easy to reach a consensus on decisions rather than a larger board,leading to better firm *** ROE and ROA are at their worst,board members use their power to protect their ***,independent board members have a negative influence on financial *** company size has always been a strong supporter of high profitability,and a high debt ratio has not yet brought about tax savings.

关键词： artificial neural networks financial performance threshold regression

Fluorinated Colorless Polyimides with High Heat-resistance and Low Birefringence

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Chinese Journal of Polymer Science 2023年第10期41卷 1599-1608页

作者： Bing-yu Zou Lu-Hao Qiu Huan-yu Lei Jin-Ming Liu Wei-Feng Peng Hong-Qin Zhao Feng Bao Ming-Jun huang South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou510640China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou510640China

The development of optical films with high transparency,high thermal resistance and low birefringence remains a challenge in the flexible display *** this work,we designed and synthesized a series of fluorinated colorless polyimides(CPIs)materials using 2,5-substituted m-phenylenediamine diamine monomers and 1,2,4,5-cyclohexanetetracarboxylic dianhydride(CHDA).We systematically studied the effects of fluorinated group substitutions on the thermal,mechanical,optical and dielectric properties of CPI *** introduction of alicyclic CHDA dianhydride affords high transparency and low yellowness,while the 2,5-substituted m-phenylenediamine diamines offer the CPIs with quite low birefringence as well as high glass transition temperatures.A particular CHDA/o3FBDA film with simple chemical structure stands out,exhibiting well-balanced overall properties.

关键词： Colorless polyimide Low birefringence Fluorinated Optical flm

Recent progress on fluorescent probes for viruses

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Chinese Chemical Letters 2024年第1期35卷 72-83页

作者： Siyang Shen Weilin Xu Jianxiang Lu Shuhui Wang yurou huang xiaoyan Zeng Weimin xiao Jun Yin Key Laboratory of Pesticide and Chemical Biology Ministry of EducationHubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisInternational Joint Research Center for Intelligent Biosensing Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan 430079China Shenzhen Academy of Metrology and Quality Inspection Shenzhen 518109China

Viruses are ubiquitous in human life. Some viruses can be used as vectors of genetic engineering and specific pesticides. Other viruses trigger a variety of diseases in humans, animals and plants, resulting in high infection rates and mortality. Therefore, convenient, accurate and rapid detection of viruses is of great significance for the diagnosis and treatment of subsequent diseases. In contrast to traditional methods of detection, which rely on time-consuming and complex techniques such as polymerase chain reaction (PCR), fluorescent probes and imaging methods generate real-time results, with high specificity, and have been widely used in viral detection. In this review, the application of viral fluorescent probes in analyzing the molecular structure, detection and biological imaging is discussed. In particular, we categorized the probes based on their specificity for human and plant viruses, reviewing the latest findings and analyzing their limitations. The potential of fluorescent molecular probes in the treatment of viral disease and environmental analysis, and their possible combinations with protein and immune technology are discussed.

关键词： Fluorescent probe Detection Bioimaging Virus Health

Improving exposure of anodically ordered Ni-Ti-O and corrosion resistance and biological properties of NiTi alloys by substrate electropolishing

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Rare Metals 2021年第12期40卷 3575-3587页

作者： Yong-Hua Sun Ya Zhao yu-yu Zhao You-Jie Rong Run-Hua Yao xiao-Hong Yao Rui-Qiang Hang Paul K.Chu Laboratory of Biomaterial Surfaces and Interfaces Institute of New Carbon MaterialsTaiyuan University of TechnologyTaiyuan 030024China Department of Physics Department of Materials Science and EngineeringDepartment of Biomedical EngineeringCity University of Hong KongKowloon 999077Hong KongChina

Although Ni-Ti-O nanopores(NPs) can be fabricated by anodization of mechanically polished NiTi alloys, the top disordered layer is difficult to remove thus hindering the functionality of the Ni-Ti-O NPs. In this work, an electropolishing(EP) pretreatment was performed on the NiTi substrate prior to anodization to thoroughly expose the NPs. Our results show that the EP pretreatment for 5 min perfectly removes the top disordered layer on the Ni-Ti-O NPs to expose the underlying NPs and consequently, the corrosion resistance and antibacterial ability are enhanced. The exposed NPs can elongate bone marrow mesenchymal stem cells, which may be responsible for the upregulated alkaline phosphatase activity, secretion of Type I collagen, and extracellular matrix mineralization. These results suggest that EP is a desirable pretreatment before anodization of the NiTi alloys because the irregular surface layer on the Ni-Ti-O NPs can be removed to enhance the corrosion resistance and biological functions.

关键词： Nickel-titanium alloy Anodization Corrosion behavior Osteogenic activity Antibacterial ability

Measurement of the high energyγ-rays from heavy ion reactions usingČerenkov detector

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Nuclear Science and Techniques 2024年第2期35卷 123-130页

作者： Da-Wei Si Yan Zhou Sheng xiao Zhi Qin Dong Guo yu-Hao Qin Yi-Jie Wang Bo-yuan Zhang Bai-Ting Tian Zhi-Gang xiao Department of Physics Tsinghua UniversityBeijing 100084China

The energetic bremsstrahlung photons up to 100 MeV produced in heavy ion collisions can be used as a sensitive probe for short-range correlation in atomic nuclei. The energy of the γ-rays can be measured by collecting the Čerenkov light in the medium induced by the fast electrons generated in the Compton scattering or electromagnetic shower of the incident γray. Two types of detectors based on pure water and lead glass as sensitive materials were designed for this purpose. The γresponse and optical photon propagation in the detectors were simulated based on electromagnetic and optical processes in Geant4. The inherent energy resolutions of 0.022(4) + 0.51(2)∕E^(1/2)_(γ) for water and 0.0026(3) + 0.446(3)∕E^(1/2)_(γ) for lead glass were obtained. The geometry sizes of the lead glass and water were optimized to 30 cm × 30 cm × 30 cm and 60 cm × 60 cm ×120 cm, respectively, to detect high-energy γ-rays at 160 MeV. The Hough transform method was applied to reconstruct the direction of the incident γ-rays, providing the ability to experimentally distinguish the high-energy γ-rays produced in the reactions on the target from random background cosmic-ray muons.

关键词： Bremsstrahlungγ-rays Čerenkov Geant4 Energy resolution Direction reconstruction Hough transform

Self-Aggregation Enhanced Third-Order Optical Nonlinearities of Aryloxy Substituted Zinc Phthalocyanines

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Chinese Physics Letters 2013年第12期30卷 42-45页

作者： LI Zhong-yu WU Chun-Hui huang Xin XU Song Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Department of Petrochemical EngineeringChangzhou UniversityChangzhou 213164 Institute of Animal and Plant Quarantine of Chinese Academy of Inspection and Quarantine Beijing 100029

Third-order optical nonlinearities of three aryloxy substituted phthalocyanines are measured by femtosecond forward degenerate four-wave mixing technique at 800 *** optical responses are observed and the magnitude of the second-order hyperpolarizabilitiesγof the phthalocyanines is measured to be as large as 10?31 *** to the enhancement of J-aggregates,theγvalue of an aryloxy substituted zinc phthalocyanine in chloroform is approximately 2.2 times larger than that of the dye in ***,the morphologies of aryloxy substituted zinc phthalocyanine in chloroform exhibit that the nanowires with a diameter of 50–100 nm are connected to each other to form an indefinite network structure,while no aggregates are detected when the samples are prepared from a solution in the methanol.

关键词： phthalocyanine substituted methanol

Glutamatergic Neurons in the Caudal Zona Incerta Regulate Parkinsonian Motor Symptoms in Mice

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Neuroscience Bulletin 2022年第1期38卷 1-15页

作者： Li-Xuan Li yu-Lan Li Jin-Tao Wu Ji-Zhou Song xiao-Ming Li Department of Neurobiology and Department of Neurology of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhou310003China NHC and CAMS Key Laboratory of Medical Neurobiology Ministry of Education Frontier Science Center for Brain Research and Brain-Machine IntegrationSchool of Brain Science and Brain MedicineZhejiang University School of MedicineHangzhou310030China Department of Engineering Mechanics Soft Matter Research Centerand Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhou310063China

Parkinson’s disease(PD)is the second most common and fastest-growing neurodegenerative *** recent years,it has been recognized that neurotransmitters other than dopamine and neuronal systems outside the basal ganglia are also related to PD ***,little is known about whether and how the caudal zona incerta(ZIc)regulates parkinsonian motor ***,we showed that specific glutamatergic but not GABAergic ZIc^(VgluT2) neurons regulated these ***^(VgluT2) neuronal activation induced time-locked parkinsonian motor *** mouse models of PD,the ZIc^(VgluT2) neurons were hyperactive and inhibition of their activity ameliorated the motor ***^(VgluT2) neurons monosynaptically projected to the substantia nigra pars ***-nigral circuit activation induced parkinsonian motor ***,our findings provide a direct link between the ZIc,its glutamatergic neurons,and parkinsonian motor symptoms for the first time,help to better understand the mechanisms of PD,and supply a new important potential therapeutic target for PD.

关键词： Parkinson's disease Caudal zona incerta Glutamate Substantia nigra pars reticulata Parkinsonian motor symptoms

Treatment of phosphate-containing oily wastewater by coagulation and microfiltration

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Journal of Environmental Sciences 2006年第4期18卷 629-633页

作者： ZHANG Jin SUN yu-xin huang Zhi-feng LIU Xing-qin MENG Guang-yao Department of Materials of Science and Engineering University of Science and Technology of China Hefei 230026China School of Chemistry and Chemical Engineering Anhui University Hefei 230039 China National Key Laboratory of Transient Physics Nanjing 210094 China Great Wall New Century Membrane Technology Corporation Hefei 230601 China

The oily wastewater generated from pretreatment unit of electrocoating industry contains oils, phosphate, organic solvents, and surfactants. In order to improve the removal efficiencies of phosphate and oils, to mitigate the membrane fouling, coagulation for ceramic membrane microfiltration of oily wastewater was performed. The results of filtration tests show that the membrane fouling decreased and the permeate flux and quality increased with coagulation as pretreatment. At the coagulant Ca （OH）2 dosage of 900 mg/L, the removal efficiency of phosphate was increased from 46.4% without coagulation to 99.6%; the removal of COD and oils were 97.0% and 99.8%, respectively. And the permeate flux was about 70% greater than that when Ca（OH）2 was not used. The permeate obtained from coagulation and microfiltration can be reused as make-up water, and the recommended operation conditions for pilot and industrial application are transmembrane pressure of 0.10 MPa and cross-flow velocity of 5 m/s. The comparison results show that 0.2 μm ZrO2 microfilter with coagulation could be used to perform the filtration rather than conventional ultrafilter, with very substantial gain in flux and removal efficiency of phosphate.

关键词： ceramic membrane crossflow microfiltration coagulation phosphate removal fouling mitigation phosphate-containing oily wastewater