The effects of active modified atmosphere packaging （MAP） on the postharvest quality of shiitake mushrooms stored at cold temperature （4°C） were investigated.The gas components were 2% O2 ＋7% CO2 （MAP1）,2%...The effects of active modified atmosphere packaging （MAP） on the postharvest quality of shiitake mushrooms stored at cold temperature （4°C） were investigated.The gas components were 2% O2 ＋7% CO2 （MAP1）,2% O2 ＋10% CO2 （MAP2） and 2% O2 ＋13% CO2 （MAP3）,respectively.The results showed that active MAP could extend the shelf-life of shiitake mushrooms to 17 d and the concentration of carbon dioxide could influence the postharvest quality of shiitake mushrooms.MAP2 treatment inhibited the increase in respiration rate and malondinaldehyde （MDA） contents,delayed the decrease in firmness,soluble sugar and vitamin C,and obviously reduced the activity of polyphenol oxidase （PPO） and the degree of browning,therefore maintaining better quality.展开更多
目的:总结一例64岁II型糖尿病合并血栓性血小板减少性紫癜患者在院治疗调控血糖期间针对在血浆置换治疗过程中出现感染、内分泌代谢紊乱、出血、气体交换障碍等主要护理问题的护理要点,以期为相似案例提供借鉴。方法:就患者治疗全周期...目的:总结一例64岁II型糖尿病合并血栓性血小板减少性紫癜患者在院治疗调控血糖期间针对在血浆置换治疗过程中出现感染、内分泌代谢紊乱、出血、气体交换障碍等主要护理问题的护理要点,以期为相似案例提供借鉴。方法:就患者治疗全周期进行管理,以抢救生命、治疗疾病为重点,期间以控制管理基础疾病为基础,包括预防感染、血糖管理、症状护理、血浆置换护理、管道管理、心理护理等方面。结果:连续治疗10 d后患者生命体征暂时能够平稳,病情得到控制。结论:对患者生命治疗周期进行整体管控护理,针对基础慢性疾病合并疑难急症进行科学合理地护理,能迅速保障患者生命安全、提升治疗效率。Objective: To summarize the key points of nursing for a 64-year-old patient with type II diabetes mellitus complicated with thrombotic thrombocytopenic purpura during inpatient treatment for major nursing problems such as infection, endocrine and metabolic disorders, bleeding and gas exchange disorders during plasma exchange treatment, in order to provide reference for similar cases. Methods: The whole cycle of treatment was managed, focusing on life-saving and disease treatment, and the control and management of underlying diseases were the basis, including infection prevention, blood glucose management, symptom nursing, plasmapheresis nursing, pipeline management, and psychological nursing. Results: After 10 days of continuous treatment, the patient’s vital signs were temporarily stable and the condition was controlled. Conclusion: The overall control and nursing of the patient’s life cycle and the scientific and reasonable nursing for the underlying chronic diseases combined with intractable and urgent diseases can quickly ensure the life safety of patients and improve the treatment efficiency.展开更多
According to the equivalent view for the terminal current-voltage constraint relationship between pathological elements and the various second-generation current-controlled convegors （CCCIIs）, four patholo- gical mo...According to the equivalent view for the terminal current-voltage constraint relationship between pathological elements and the various second-generation current-controlled convegors （CCCIIs）, four patholo- gical models for the CCCII are first derived by means of the nodal admittance matrix expansion in this paper. Moreover, 48 new pathological models for the modified CCCII are also synthesized. The derived pathological models for the various CCCIIs are expected to be useful in circuit analysis and synthesis.展开更多
In this paper,the truncated Painlev′e analysis,nonlocal symmetry,Bcklund transformation of the（2＋1）-dimensional modified Bogoyavlenskii–Schiff equation are presented.Then the nonlocal symmetry is localized to the...In this paper,the truncated Painlev′e analysis,nonlocal symmetry,Bcklund transformation of the（2＋1）-dimensional modified Bogoyavlenskii–Schiff equation are presented.Then the nonlocal symmetry is localized to the corresponding nonlocal group by the prolonged system.In addition,the（2＋1）-dimensional modified Bogoyavlenskii–Schiff is proved consistent Riccati expansion（CRE） solvable.As a result,the soliton–cnoidal wave interaction solutions of the equation are explicitly given,which are difficult to find by other traditional methods.Moreover figures are given out to show the properties of the explicit analytic interaction solutions.展开更多
This work examined the removal of Pb(II) using a chitosan derivative (SB, synthesized from benzaldehyde) assisted by a magnetic field. The adsorption capacity for Pb(II) was investigated. It was found that 1) the pH a...This work examined the removal of Pb(II) using a chitosan derivative (SB, synthesized from benzaldehyde) assisted by a magnetic field. The adsorption capacity for Pb(II) was investigated. It was found that 1) the pH and concentration of the ion solution, as well as exposure time and strength of magnetic field, affected the degree of adsorption;and 2) studies of the adsorption isotherms and kinetics of ions onto SB revealed that SB showed enhanced adsorption capacity towards Pb(II) ions in a magnetic field compared with magnetically untreated samples. The Langmuir and Freundlich isotherm were applied to describe the experimental adsorption, and the maximum adsorption capacity of SB for Pb(II) was 2.5040 mg/g, when assisted by a magnetic field of 480 kA/m.展开更多
The adsorptive removal of antimony (III) has been successfully obtained on montmorillonite (MMT) and modified MMT from synthetic solution. The adsorption behavior of the modified and unmodified MMT has been investigat...The adsorptive removal of antimony (III) has been successfully obtained on montmorillonite (MMT) and modified MMT from synthetic solution. The adsorption behavior of the modified and unmodified MMT has been investigated as a function of initial concentration of metal ion in the solution, pH of the solution and contact time using a batch extraction process. The optimized process can be applied for the adsorption, detection and estimation of antimony from 0.006 μg/ml (6.0 ppb) to 100.00 μg/ml (100.0 ppm) in aqueous solution. It has been observed that almost 99% of antimony (III) can be successfully extracted from a solution containing 100 μg/ml of the metal ion at pH 6.0 at 25?C ± 2?C. The investigation of the kinetics of sorption of antimony (III) on MMT/modified MMTshows intraparticle diffusion to be the rate limiting step during the initial stages of adsorption followed by chemisorption.展开更多
Magnetically modified Fe-Al pillared bentonite（Fe3O4/ Fe-Al-Bent） was prepared via chemical co-precipitation method and characterized by powder X-ray diffraction（XRD）, Brunauer-EmmettTeller（BET）, Fourier transfo...Magnetically modified Fe-Al pillared bentonite（Fe3O4/ Fe-Al-Bent） was prepared via chemical co-precipitation method and characterized by powder X-ray diffraction（XRD）, Brunauer-EmmettTeller（BET）, Fourier transform infrared spectroscopy（FTIR） and scanning electron microscopy（SEM）. A series of experiments were carried out to investigate the degradation of Orange II by the obtained heterogeneous catalysts in the presence of H2O2. The experimental result indicated that the synthetic materials had a high catalytic activity and good reusability.展开更多
An Eastman-AQ/Ni(II)chemically modified electrode(CME) produced by“double coating steps”deposition of Eastman-AQ/Ni(II) film and Ni(II)-coating crystalline species onto glassy carbon instead of metallic nickel elect...An Eastman-AQ/Ni(II)chemically modified electrode(CME) produced by“double coating steps”deposition of Eastman-AQ/Ni(II) film and Ni(II)-coating crystalline species onto glassy carbon instead of metallic nickel electrode exhibited stable electrocatalytic oxidation of numerous ∝-hydrogen compounds including carbohydrates, amines and amino acids.Determination of glucose in FIA on the CME, the linear response concentration range was bstween 1.0×10^(-5) and 5.0×10^(-2) mol/L and the detection limit was 5.0×10^(-6)mol/L.The stability of the CME was adequate for routine quantitative application.展开更多
The aim of the present study is to improve the capabilities and precision of a recently introduced Sea Surface Acoustic Simulator(SSAS) developed based on optimization of the Helmholtz–Kirchhoff–Fresnel(HKF) method....The aim of the present study is to improve the capabilities and precision of a recently introduced Sea Surface Acoustic Simulator(SSAS) developed based on optimization of the Helmholtz–Kirchhoff–Fresnel(HKF) method. The improved acoustic simulator, hereby known as the Modified SSAS(MSSAS), is capable of determining sound scattering from the sea surface and includes an extended Hall–Novarini model and optimized HKF method. The extended Hall–Novarini model is used for considering the effects of sub-surface bubbles over a wider range of radii of sub-surface bubbles compared to the previous SSAS version. Furthermore, MSSAS has the capability of making a three-dimensional simulation of scattered sound from the rough bubbly sea surface with less error than that of the Critical Sea Tests(CST) experiments. Also, it presents scattered pressure levels from the rough bubbly sea surface based on various incident angles of sound. Wind speed, frequency, incident angle, and pressure level of the sound source are considered as input data, and scattered pressure levels and scattering coefficients are provided. Finally, different parametric studies were conducted on wind speeds, frequencies, and incident angles to indicate that MSSAS is quite capable of simulating sound scattering from the rough bubbly sea surface, according to the scattering mechanisms determined by Ogden and Erskine. Therefore, it is concluded that MSSAS is valid for both scattering mechanisms and the transition region between them that are defined by Ogden and Erskine.展开更多
Mongolian sheep wool was modified by maleic anhydride at different temperatures to obtain new adsorbent for the removal of Cr(III). Adsorption of Cr(III) from aqueous solution onto the modified wool was investigated i...Mongolian sheep wool was modified by maleic anhydride at different temperatures to obtain new adsorbent for the removal of Cr(III). Adsorption of Cr(III) from aqueous solution onto the modified wool was investigated in batch system. In this work, the effect of various parameters such as pH, contact time, temperature and initial concentration on the adsorption capacity was determined by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry). Modified wool was characterized by SEM (scanning electron microscopy) and FT-IR (Fourier transform infrared spectrometer). The thermodynamic and kinetic studies were carried out and the results confirmed that the adsorption process was spontaneous in nature, thermodynamically favourable and endothermic. Kinetically, the adsorption process obeys the pseudo-second order model. The modified wool can be an effective adsorbent for the removal of Cr(III) from aqueous solution.展开更多
基金supported by the Key Project of Science and Technology Research,Ministry of Education of China(208054)the Outstanding Youth Group Project of Natural Science Foundation of Zhejiang Province,China(R3090330)
文摘The effects of active modified atmosphere packaging （MAP） on the postharvest quality of shiitake mushrooms stored at cold temperature （4°C） were investigated.The gas components were 2% O2 ＋7% CO2 （MAP1）,2% O2 ＋10% CO2 （MAP2） and 2% O2 ＋13% CO2 （MAP3）,respectively.The results showed that active MAP could extend the shelf-life of shiitake mushrooms to 17 d and the concentration of carbon dioxide could influence the postharvest quality of shiitake mushrooms.MAP2 treatment inhibited the increase in respiration rate and malondinaldehyde （MDA） contents,delayed the decrease in firmness,soluble sugar and vitamin C,and obviously reduced the activity of polyphenol oxidase （PPO） and the degree of browning,therefore maintaining better quality.
文摘目的:总结一例64岁II型糖尿病合并血栓性血小板减少性紫癜患者在院治疗调控血糖期间针对在血浆置换治疗过程中出现感染、内分泌代谢紊乱、出血、气体交换障碍等主要护理问题的护理要点,以期为相似案例提供借鉴。方法:就患者治疗全周期进行管理,以抢救生命、治疗疾病为重点,期间以控制管理基础疾病为基础,包括预防感染、血糖管理、症状护理、血浆置换护理、管道管理、心理护理等方面。结果:连续治疗10 d后患者生命体征暂时能够平稳,病情得到控制。结论:对患者生命治疗周期进行整体管控护理,针对基础慢性疾病合并疑难急症进行科学合理地护理,能迅速保障患者生命安全、提升治疗效率。Objective: To summarize the key points of nursing for a 64-year-old patient with type II diabetes mellitus complicated with thrombotic thrombocytopenic purpura during inpatient treatment for major nursing problems such as infection, endocrine and metabolic disorders, bleeding and gas exchange disorders during plasma exchange treatment, in order to provide reference for similar cases. Methods: The whole cycle of treatment was managed, focusing on life-saving and disease treatment, and the control and management of underlying diseases were the basis, including infection prevention, blood glucose management, symptom nursing, plasmapheresis nursing, pipeline management, and psychological nursing. Results: After 10 days of continuous treatment, the patient’s vital signs were temporarily stable and the condition was controlled. Conclusion: The overall control and nursing of the patient’s life cycle and the scientific and reasonable nursing for the underlying chronic diseases combined with intractable and urgent diseases can quickly ensure the life safety of patients and improve the treatment efficiency.
基金supported by the Natural Science Foundation of Shaanxi Province under Grant No.2017JM6087
文摘According to the equivalent view for the terminal current-voltage constraint relationship between pathological elements and the various second-generation current-controlled convegors （CCCIIs）, four patholo- gical models for the CCCII are first derived by means of the nodal admittance matrix expansion in this paper. Moreover, 48 new pathological models for the modified CCCII are also synthesized. The derived pathological models for the various CCCIIs are expected to be useful in circuit analysis and synthesis.
基金Project supported by the Global Change Research Program of China(Grant No.2015CB953904)the National Natural Science Foundation of China(Grant Nos.11275072 and 11435005)+2 种基金the Doctoral Program of Higher Education of China(Grant No.20120076110024)the Network Information Physics Calculation of Basic Research Innovation Research Group of China(Grant No.61321064)the Fund from Shanghai Collaborative Innovation Center of Trustworthy Software for Internet of Things(Grant No.ZF1213)
文摘In this paper,the truncated Painlev′e analysis,nonlocal symmetry,Bcklund transformation of the（2＋1）-dimensional modified Bogoyavlenskii–Schiff equation are presented.Then the nonlocal symmetry is localized to the corresponding nonlocal group by the prolonged system.In addition,the（2＋1）-dimensional modified Bogoyavlenskii–Schiff is proved consistent Riccati expansion（CRE） solvable.As a result,the soliton–cnoidal wave interaction solutions of the equation are explicitly given,which are difficult to find by other traditional methods.Moreover figures are given out to show the properties of the explicit analytic interaction solutions.
文摘This work examined the removal of Pb(II) using a chitosan derivative (SB, synthesized from benzaldehyde) assisted by a magnetic field. The adsorption capacity for Pb(II) was investigated. It was found that 1) the pH and concentration of the ion solution, as well as exposure time and strength of magnetic field, affected the degree of adsorption;and 2) studies of the adsorption isotherms and kinetics of ions onto SB revealed that SB showed enhanced adsorption capacity towards Pb(II) ions in a magnetic field compared with magnetically untreated samples. The Langmuir and Freundlich isotherm were applied to describe the experimental adsorption, and the maximum adsorption capacity of SB for Pb(II) was 2.5040 mg/g, when assisted by a magnetic field of 480 kA/m.
文摘The adsorptive removal of antimony (III) has been successfully obtained on montmorillonite (MMT) and modified MMT from synthetic solution. The adsorption behavior of the modified and unmodified MMT has been investigated as a function of initial concentration of metal ion in the solution, pH of the solution and contact time using a batch extraction process. The optimized process can be applied for the adsorption, detection and estimation of antimony from 0.006 μg/ml (6.0 ppb) to 100.00 μg/ml (100.0 ppm) in aqueous solution. It has been observed that almost 99% of antimony (III) can be successfully extracted from a solution containing 100 μg/ml of the metal ion at pH 6.0 at 25?C ± 2?C. The investigation of the kinetics of sorption of antimony (III) on MMT/modified MMTshows intraparticle diffusion to be the rate limiting step during the initial stages of adsorption followed by chemisorption.
基金Funded by the Specialized Research Fund for the Doctoral Program of Higher Education of China(20114219110002)the Natural Science Foundation of Hubei Province(Nos.2014CFB810&2014CFB812)
文摘Magnetically modified Fe-Al pillared bentonite（Fe3O4/ Fe-Al-Bent） was prepared via chemical co-precipitation method and characterized by powder X-ray diffraction（XRD）, Brunauer-EmmettTeller（BET）, Fourier transform infrared spectroscopy（FTIR） and scanning electron microscopy（SEM）. A series of experiments were carried out to investigate the degradation of Orange II by the obtained heterogeneous catalysts in the presence of H2O2. The experimental result indicated that the synthetic materials had a high catalytic activity and good reusability.
文摘An Eastman-AQ/Ni(II)chemically modified electrode(CME) produced by“double coating steps”deposition of Eastman-AQ/Ni(II) film and Ni(II)-coating crystalline species onto glassy carbon instead of metallic nickel electrode exhibited stable electrocatalytic oxidation of numerous ∝-hydrogen compounds including carbohydrates, amines and amino acids.Determination of glucose in FIA on the CME, the linear response concentration range was bstween 1.0×10^(-5) and 5.0×10^(-2) mol/L and the detection limit was 5.0×10^(-6)mol/L.The stability of the CME was adequate for routine quantitative application.
文摘The aim of the present study is to improve the capabilities and precision of a recently introduced Sea Surface Acoustic Simulator(SSAS) developed based on optimization of the Helmholtz–Kirchhoff–Fresnel(HKF) method. The improved acoustic simulator, hereby known as the Modified SSAS(MSSAS), is capable of determining sound scattering from the sea surface and includes an extended Hall–Novarini model and optimized HKF method. The extended Hall–Novarini model is used for considering the effects of sub-surface bubbles over a wider range of radii of sub-surface bubbles compared to the previous SSAS version. Furthermore, MSSAS has the capability of making a three-dimensional simulation of scattered sound from the rough bubbly sea surface with less error than that of the Critical Sea Tests(CST) experiments. Also, it presents scattered pressure levels from the rough bubbly sea surface based on various incident angles of sound. Wind speed, frequency, incident angle, and pressure level of the sound source are considered as input data, and scattered pressure levels and scattering coefficients are provided. Finally, different parametric studies were conducted on wind speeds, frequencies, and incident angles to indicate that MSSAS is quite capable of simulating sound scattering from the rough bubbly sea surface, according to the scattering mechanisms determined by Ogden and Erskine. Therefore, it is concluded that MSSAS is valid for both scattering mechanisms and the transition region between them that are defined by Ogden and Erskine.
文摘Mongolian sheep wool was modified by maleic anhydride at different temperatures to obtain new adsorbent for the removal of Cr(III). Adsorption of Cr(III) from aqueous solution onto the modified wool was investigated in batch system. In this work, the effect of various parameters such as pH, contact time, temperature and initial concentration on the adsorption capacity was determined by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry). Modified wool was characterized by SEM (scanning electron microscopy) and FT-IR (Fourier transform infrared spectrometer). The thermodynamic and kinetic studies were carried out and the results confirmed that the adsorption process was spontaneous in nature, thermodynamically favourable and endothermic. Kinetically, the adsorption process obeys the pseudo-second order model. The modified wool can be an effective adsorbent for the removal of Cr(III) from aqueous solution.
