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Measurement of soluble solids content in watermelon by Vis/NIR diffuse transmittance technique

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第2期8卷 105-110页

作者： TIAN Hai-qing YING Yi-bin LU hui-shan FU xia-ping YU Hai-yan School of Biosystems Engineering and Food Science Zhefiang University Hangzhou 310029 China

Watermelon is a popular fruit in the world with soluble solids content （SSC） being one of the major characteristics used for assessing its quality. This study was aimed at obtaining a method for nondestructive SSC detection of watermelons by means of visible/near infrared （Vis/NIR） diffuse transmittance technique. Vis/NIR transmittance spectra of intact watermelons were acquired using a low-cost commercially available spectrometer operating over the range 350-1000 nm. Spectra data were analyzed by two multivariate calibration techniques： partial least squares （PLS） and principal component regression （PCR） methods. Two experiments were designed for two varieties of watermelons [Qilin （QL）, Zaochunhongyu （ZC）], which have different skin thickness range and shape dimensions. The influences of different data preprocessing and spectra treatments were also investigated. Performance of different models was assessed in terms of root mean square errors of calibration （RMSEC）, root mean square errors of prediction （RMSEP） and correlation coefficient （r） between the predicted and measured parameter values. Results showed that spectra data preprocessing influenced the performance of the calibration models. The first derivative spectra showed the best results with high correlation coefficient of determination [r=0.918 （QL）; r=0.954 （ZC）], low RMSEP [0.65 °Brix （QL）; 0.58 °Brix （ZC）], low RMSEC [0.48 °Brix （QL）; 0.34°Brix （ZC）] and small difference between the＇RMSEP and the RMSEC by PLS method. The nondestructive Vis/NIR measurements provided good estimates of SSC index of watermelon, and the predicted values were highly correlated with destructively measured values for SSC. The models based on smoothing spectra （Savitzky-Golay filter smoothing method） did not enhance the performance of calibration models obviously. The results indicated the feasibility of Vis/NIR diffuse transmittance spectral analysis for predicting watermelon SSC in a nondestructive way.

关键词： Diffuse transmittance Visible/near infrared Nondestructive detection Soluble solids content Watermelon

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Comparing Genetic Characteristics of Retrotransposon TOS17 During Different Tissue Culture Processes in the Rice Cultivars Nipponbare and Shishoubaimao

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Agricultural Sciences in China 2010年第2期9卷 157-162页

作者： LI Kuan, WANG Chuang, YING shan and SHOU hui-xia State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, P.R.China State Key Laboratory of Plant Physiology and Biochemistry College of Life Sciences Zhejiang University Hangzhou 310058 P.R. China

As a retrotransposon, TOS17 was a useful tool for rice genetic and functional genomic research. To ascertain the feasibility of constructing a TOS17 insertion mutation library in the rice cultivar Shishoubaimao, the genetic and expression characteristics of TOS17 were analyzed. We made solid and suspension tissue cultures and confirmed the copy numbers of TOS17 at different time points in both tissue culture processes by real-time quantitative PCR （RT-qPCR）. Three primary copies of TOS17 were detected in naturally grown Shishoubaimao. TOS17 was activated by tissue culture, and the copy numbers of TOSI7 increased along with a prolonged tissue culture time in both the Nipponbare and the Shishoubaimao cultivars. Therefore, Shishoubaimao is a potential candidate for constructing a TOS17 insertion mutant library. Compared with Nipponbare, TOS17 was more active in Shishoubaimao during tissue culture. Higher copy numbers of TOS17 were obtained with the suspension tissue culture process than with the solid tissue culture process over the same time courses. We concluded that 3-4 months of suspension tissue culture time is suitable for constructing a TOS17 insertion mutant library in Shishoubaimao.

关键词： Shishoubaimao tissue culture TOS17 copy number insertion mutant library

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CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao hui-Lin Jiang Bao-xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

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Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

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Science China Chemistry 2025年第1期68卷 201-208页

作者： hui-Feng Wang Wen-Jie Shi Yu-Xin Yang Bao-xia Dong Tong-Bu Lu Di-Chang Zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

关键词： metal-organic frameworks dinuclear metal centers synergistic catalysis CO2 reduction photocatalysis

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Successful emergency surgical intervention in acute non-STsegment elevation myocardial infarction with rupture:A case report

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World Journal of Clinical Cases 2025年第4期13卷 41-47页

作者： Xing-Po Li Zi-shan Wang Hong-xia Yu shan-shan Wang Department of Cardiovascular Medicine Huantai County Hospital of Traditional Chinese MedicineZibo 256400Shandong ProvinceChina Department of Cardiovascular Medicine Zibo Hospital of Integrated Traditional Chinese and Western MedicineZibo 255500Shandong ProvinceChina

BACKGROUND The incidence of acute myocardial infarction(AMI)is rising,with cardiac rupture accounting for approximately 2%of deaths in patients with acute ST-segment elevation myocardial infarction(STEMI).Ventricular free wall rupture(FWR)occurs in approximately 2%of AMI patients and is notably rare in patients with *** of cardiac rupture include left ventricular FWR,ventricular septal rupture,and papillary muscle *** FWR usually leads to acute cardiac tamponade or electromechanical dissociation,where standard resuscitation efforts may not be *** septal rupture and papillary muscle rupture often result in refractory heart failure,with mortality rates over 50%,even with surgical or percutaneous repair *** SUMMARY We present a rare case of an acute non-STEMI patient who suffered sudden FWR causing cardiac tamponade and loss of consciousness immediate before undergoing coronary *** resuscitation and emergency open-heart repair along with coronary artery bypass grafting resulted in successful patient *** This case emphasizes the risks of AMI complications,shares a successful treatment scenario,and discusses measures to prevent such complications.

关键词： Acute non-ST segment elevation myocardial infarction Cardiac rupture Acute myocardial infarction Free wall rupture Case report

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基于多芯光纤错位熔接结构的温度与折射率同时测量传感器

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光电子．激光 2018年第3期29卷 243-248页

作者：胡义慧孙四梅毛敏江超郭小珊黄会玲夏果湖北师范大学物理与电子科学学院湖北黄石435002

提出了一款由输入单模光纤(SMF)-多芯光纤(MCF)-多模光纤(MMF)-输出SMF错位熔接构成的光纤Mach-Zehnder干涉仪(MZI)结构,实现了环境温度和折射率的同时测量。实验结果表明,随着环境温度的变化,传感器透射谱峰值波长线性漂移,灵敏度达到5... 详细信息

提出了一款由输入单模光纤(SMF)-多芯光纤(MCF)-多模光纤(MMF)-输出SMF错位熔接构成的光纤Mach-Zehnder干涉仪(MZI)结构,实现了环境温度和折射率的同时测量。实验结果表明,随着环境温度的变化,传感器透射谱峰值波长线性漂移,灵敏度达到54.238pm/℃,而透射谱峰值强度随温度变化不敏感;随着环境折射率的变化,传感器透射谱峰值强度线性变化,灵敏度达到10.704dB/RIU(RIU为折射率单位),而透射谱峰值波长随环境折射率变化不敏感。通过同时监测传感器输出光谱的峰值波长漂移量和峰值强度变化量,能够实现温度与折射率的同时测量。在温度与折射率测量时分别利用波长调制法与强度调制法,因此它们同时测量不存在交叉感染。本文传感器具有结构简单、制作容易和灵敏度高等优点,在生物、化学和医学等领域有广泛的应用前景。

关键词：光纤传感器 Mach-Zehnder干涉仪(MZI) 光纤熔接技术多芯光纤(MCF) 折射率和温度

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Synthesis of C60-, N-RGO-, and RGO-based SnO2 Nanocomposite Photocatalysts: A Comparative Study

Synthesis of C60-, N-RGO-, and RGO-based SnO2 Nanocomposite ...

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中国化学会第十届全国无机化学学术会议

作者： Min Ling Yuan-Sheng Cheng Pei-Yuan Zeng xiao Li shan-hui xia Kong-Lin Wu Si-Yu Wang Qian-Qian Zhang xian-Wen Wei College of Chemistry and Materials Science Key Laboratory of Functional Molecular Solids the Ministry of EducationAnhui Normal University School of Chemistry and Chemical Engineering Institute of Materials Sciences and Engineering Anhui University of Technology

In this paper, a series of SnO nanocomposites modified by [60]Fullerene(C), reduced graphene oxides(RGO) and nitrogen-doped RGO(N-RGO) with different weight ratios are prepared via simple absorbing and hydrothermal methods. The dye photosensitization degradation under visible light irradiation is enhanced observably with the introduced carbon materials, which is ascribed to the broaden light absorption region of catalyst and the increased adsorption of dye by the catalyst. . The optimum weight ratios of the composites are 1.25 wt% C-SnO, 7.5 wt%N-RGO-SnO and 5 wt % RGO-SnO, their degradation rates for rhodamine B(RhB) are about 13.9, 18.8 and 11.1 times higher than pure SnO under visible light irradiation, respectively. The degradation effect of dyes was affected by the differences in adsorbability of carbon materials on dyes. This study proposes that N-RGO was used as an electron donor to transfer electrons to SnO, which is different from the electron transmission paths of C/RGO-SnO. C and RGO receive electrons from SnO as electron receptors, which reduces the recombination of photogenic electron hole pairs thus improves the photocatalytic ability. We hope this concept could provide a primitive understanding of the photocatalytic reaction process at the level of electron transfer pathway and new insights to construct more efficient carbon-based nanocomposites.

关键词： Carbon SnO2 Composites Photocatalysis Dye degradation

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压力对带有pH值可调聚电解质刷的仿生纳米孔中离子选择性的影响

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电化学 2017年第1期23卷 64-71页

作者：单惠霞曾振平叶礼贤束峰南京理工大学电子工程与光电技术学院江苏南京210094 国立云林科技大学化学工程与材料工程系台湾云林64002 中国电波传播研究所山东青岛266107

具有pH值可调聚电解质(Polyelectrolyte,PE)刷的合成纳米孔的仿生离子通道在纳米尺度下离子、流体和生物粒子的主动运输控制方面具有重大应用潜力.离子选择性是纳流体设备中离子传输的重要现象,具有很大的现实意义和实用价值.本文提出... 详细信息

具有pH值可调聚电解质(Polyelectrolyte,PE)刷的合成纳米孔的仿生离子通道在纳米尺度下离子、流体和生物粒子的主动运输控制方面具有重大应用潜力.离子选择性是纳流体设备中离子传输的重要现象,具有很大的现实意义和实用价值.本文提出了施加压力控制纳米孔中离子选择度的方法,综合研究了溶液pH值、浓度、外加电压和压力对离子选择度的影响.仿真结果表明,离子选择度对压力的刺激是敏感的,且不像电压对离子选择度的影响会受到溶液pH值和浓度的制约,且方向不定,速度不可控;压力对离子选择度的影响不受溶液性质制约,并且灵活可控.该结果对设计带pH值可调聚电解质刷的纳米孔有重要的启发作用.

关键词： pH值可调聚电解质层合成纳米孔离子传输离子选择性

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Enhanced subacute ischemic stroke treatment via multistage drug delivery system design for combination therapy

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Science China Chemistry 2025年

作者： Xihan Xu Juan-Juan Li Jiamin Li hui-Yan Zhang Yilin Qi Bing-Sen Shi Tianqi Li shan-shan Su Weitao Zhao Chang Chen Zhongying Gong huiyu Liu Ke-Rang Wang Dong-Sheng Guo Xue Xue State Key Laboratory of Medicinal Chemical Biology College of Pharmacy Nankai University College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) Frontiers Science Center for New Organic Matter Collaborative Innovation Center of Chemical Science and EngineeringNankai University College of Chemistry and Materials Science State Key Laboratory of New Pharmaceutical Preparations and Excipients Key Laboratory of Medicinal Chemistry and Molecular Diagnosis (Ministry of Education) Key Laboratory of Chemical Biology of Hebei Province Hebei Research Center of the Basic Discipline of Synthetic Chemistry Hebei University Department of Neurology Tianjin First Central Hospital School of Medicine Nankai University Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing Laboratory of Biomedical Materials Bionanomaterials & Translational Engineering Laboratory Beijing Key Laboratory of BioprocessBeijing University of Chemical Technology

The management of acute ischemic stroke remains challenging due to its abrupt onset and the narrow treatment window,resulting in high rates of disability and *** therapy for neuroprotection and neurorepair strategies provided new hopes for subacute stroke *** we designed a multistage nanodelivery system that matches the unique microenvironment of the subacute phase of stroke,which utilizes calixarene as a building block to effectively load the neuroprotective drug *** calixarene is designed with glycosidic linkages targeting the glucose transporter 1 (GLUT1)on the blood-brain barrier (BBB) and azo bonds that are responsive to hypoxic ***,the decomposed calixarene molecules themselves possess intrinsic bio-activation to modulate inflammatory responses,achieving a multistage therapeutic approach that transitions from targeting to release and finally to *** approach combines anti-inflammation and neuroprotection,providing a multi-level treatment *** system was validated in a rat model of permanent middle cerebral artery occlusion (pMCAO),demonstrating that intravenous administration of the nanodelivery system repairs brain damage and improves motor function 24 h post-pMCAO *** work offers a precise and integrative strategy for stroke patients missing the acute therapy window to improve functional recovery and enhance the effect of comprehensive treatment.

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Generalized Commutators for Marcinkiewicz Type Integrals with Variable Kernels

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Acta Mathematicae Applicatae Sinica 2011年第3期27卷 471-480页

作者： hui-xia Mo shan-zhen Lu School of Science Beijing University of Post and Telecommunications Beijing 100876 China School of Mathematical Sciences Beijing Normal University Beijing 100875 China

Let A be a function with derivatives of order m and D γ A ∈■β （0 〈 β 〈 1, ｜γ｜ = m）. The authors in the paper prove that if Ω（x, z） ∈ L ∞ （R n ） × L s （S n 1 ）（s ≥ n/（n β）） is homogenous of... 详细信息

Let A be a function with derivatives of order m and D γ A ∈■β （0 〈 β 〈 1, ｜γ｜ = m）. The authors in the paper prove that if Ω（x, z） ∈ L ∞ （R n ） × L s （S n 1 ）（s ≥ n/（n β）） is homogenous of degree zero and satisfies the mean value zero condition about the variable z, then both the generalized commutator for Marcinkiewicz type integral μ A Ω and its variation μ A Ω are bounded from L p （R n ） to L q （R n ）, where 1 〈 p 〈 n/β and 1/q = 1/p β/n. The authors also consider the boundedness of μ A Ω and its variation μ A Ω on Hardy spaces.

关键词： Marcinkiewicz integral variable kernel Lipschitz space Hardy space

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