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可控合成具有增强光催化性能的CeO_(2)纳米中空球/g-C_(3)N_(4)纳米复合材料

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现代化工 2024年第5期44卷 135-141页

作者：刘玉娇李英萍符袅王霞白茜茜何洁丽云南省昆虫生物医药研发重点实验室大理大学云南大理671000

以Ce(NO_(3))_(3))·6H_(2))O和三聚氰胺为原料,采用简单的原位聚苯乙烯球模板法成功合成了一种新型CeO_(2)纳米中空球/g-C_(3)N_(4)纳米复合材料。将其用于紫外光催化降解对硝基苯胺(PNA)。结果表明,当CeO_(2)的复合质量分数为2.5%时,... 详细信息

以Ce(NO_(3))_(3))·6H_(2))O和三聚氰胺为原料,采用简单的原位聚苯乙烯球模板法成功合成了一种新型CeO_(2)纳米中空球/g-C_(3)N_(4)纳米复合材料。将其用于紫外光催化降解对硝基苯胺(PNA)。结果表明,当CeO_(2)的复合质量分数为2.5%时,PNA降解效率达到90.26%。动力学拟合结果表明,PNA光催化降解过程符合拟一级反应动力学特征。与g-C_(3)N_(4)(k=0.0060 min^(-1))和CeO_(2)(k=0.0023 min^(-1))相比,CeO_(2)纳米中空球/g-C_(3)N_(4)复合材料光催化降解PNA的反应速率常数(k=0.0110 min^(-1))分别提高了1.8倍和4.8倍。CeO_(2)和g-C_(3)N_(4)复合后形成的异质结构促进了光生载流子的分离,延长了光生载流子的寿命,从而显著提高了光催化性能。

关键词： CeO_(2)纳米球 g-C_(3)N_(4) 光催化降解对硝基苯胺一级反应动力学

Determination of soluble solid content and acidity of loquats based on FT-NIR spectroscopy

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第2期10卷 120-125页

作者： Xia-ping FU Jian-ping li ying ZHOU Yi-bin ying li-juan XIE Xiao-ying NIU Zhan-ke YAN Hai-yan YU College of Biosystem Engineering and Food Science Zhejiang University Hangzhou 310029 China

The near infrared （NIR） spectroscopy technique has been applied in many fields because of its advantages of simple preparation, fast response, and non-destructiveness. We investigated the potential of NIR spectroscopy in diffuse reflectance mode for determining the soluble solid content （SSC） and acidity （pH） of intact loquats. Two cultivars of loquats （Dahongpao and Jiajiaozhong） harvested from two orchards （Tangxi and Chun＇an, Zhejiang, China） were used for the measurement of NIR spectra between 800 and 2500 nm. A total of 400 loquats （100 samples of each cultivar from each orchard） were used in this study. Relationships between NIR spectra and SSC and acidity of loquats were evaluated using partial least square （PLS） method. Spectra preprocessing options included the first and second derivatives, multiple scatter correction （MSC）, and the standard normal variate （SNV）. Three separate spectral windows identified as full NIR （800-2500 nm）, short NIR （800-1100 rim）, and long NIR （1100-2500 nm） were studied in factorial combination with the preprocessing options. The models gave relatively good predictions of the SSC of loquats, with root mean square error of prediction （RMSEP） values of 1.21, 1.00, 0.965, and 1.16 °Brix for Tangxi-Dahongpao, Tangxi-Jiajiaozhong, Chun＇an-Dahongpao, and Chun＇an-Jiajiaozhong, respectively. The acidity prediction was not satisfactory, with the RMSEP of 0.382, 0.194, 0.388, and 0.361 for the above four loquats, respectively. The results indicate that NIR diffuse reflectance spectroscopy can be used to predict the SSC and acidity of loquat fruit.

关键词： Near infrared (NIR) spectroscopy Loquats Soluble solid content (SSC) Acidity Partial least square (PLS) Modeling Spectra preprocessing

Fractional Brownian Motion and Sheet as White Noise Functionals

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Acta Mathematica Sinica,English Series 2006年第4期22卷 1183-1188页

作者： Zhi Yuan HUANG Chu Jin li Jian ping WAN ying WU Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 P. R. China

In this short note, we show that it is more natural to look the fractional Brownian motion as functionals of the standard white noises, and the fractional white noise calculus developed by Hu and Фksendal follows directly from the classical white noise functional calculus. As examples we prove that the fractional Girsanov formula, the Ito type integrals and the fractional Black-Scholes formula are easy consequences of their classical counterparts. An extension to the fractional Brownian sheet is also briefly discussed.

关键词： Fractional Brownian motion Fractional white noise functionals Fractional Girsanov formula Wick product

A deoxidation thermodynamic model for 304 stainless steel considering multiple-components coupled reactions

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Journal of Iron and Steel Research International 2024年第1期31卷 74-91页

作者： Yan Yan Guang-hao Shang li-ping Zhang Shao-ying li Han-jie Guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China Henan Jinhui Stainless Steel Industry Group Co. Ltd.Xuchang461500HenanChina Changge Jinhui Recycling Metal R&D Co. Ltd.Xuchang461500HenanChina

A thermodynamic model for predicting the equilibrium oxygens of 304 stainless steel was developed based on the theory of slag-steel equilibrium,the law of mass conservation,and the ion and molecule coexistence *** the developed model,the Fe-Cr-Mn-Si-Al-S-O-melts reaction system and CaO-MgO-CaF_(2)-FeO-MnO-Al_(2)O_(3)-SiO_(2)-Cr2O_(3)slags were *** oxygen contents calculated by the model are in good agreement with experimental results and reference *** equilibrium oxygen contents in 304 stainless steel mainly decrease with increasing binary basicity(w(CaO)/w(SiO_(2)),where w(i)is the mass percentage of component i)and decreasing *** binary basicity at 2.0 while maintaining temperatures lower than 1823 K will keep the oxygen contents in the 304 stainless steel lower than 15×10^(-6).The equilibrium oxygen contents may also be decreased with increasing content of MgO in slags,which is more significant at lower binary ***,a small amount of FeO,MnO,and Al_(2)O_(3)(about 0-2.5 wt.%)in slags has little effect on equilibrium oxygen ***,it is found that the[C]-[O]reaction may occur during refining process but will not significantly affect the equilibrium oxygen contents.

关键词： Complex deoxidation Thermodynamic model Ion and molecule coexistence theory 304 stainless steel Slag-steel reaction

Constructing long-cycling crystalline C_(3)N_(4)-based carbonaceous anodes for sodium-ion battery via N configuration control

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Carbon Energy 2024年第1期6卷 159-171页

作者： ying Wang Hongguan li Shuanlong Di Boyin Zhai ping Niu Antonios Kelarakis Shulan Wang li li School of Metallurgy Northeastern UniversityShenyangLiaoningChina State Key Laboratory of Rolling and Automation Northeastern UniversityShenyangLiaoningChina Department of Chemistry College of ScienceNortheastern UniversityShenyangLiaoningChina School of Natural Sciences UCLan Research Centre for Smart MaterialsUniversity of Central LancashirePrestonUK Foshan Graduate School of Innovation Northeastern UniversityFoshanGuangdongChina

Carbon nitrides with two-dimensional layered structures and high theoretical capacities are attractive as anode materials for sodium-ion batteries while their low crystallinity and insufficient structural stability strongly restrict their practical *** carbon nitrides with conductive carbon may relieve these ***,little is known about the influence of nitrogen(N)configurations on the interactions between carbon and C_(3)N_(4),which is fundamentally critical for guiding the precise design of advanced C_(3)N_(4)-related ***,highly crystalline C_(3)N_(4)(poly(triazine imide),PTI)based all-carbon composites were developed by molten salt *** importantly,the vital role of pyrrolic-N for enhancing charge transfer and boosting Na+storage of C_(3)N_(4)-based composites,which was confirmed by both theoretical and experimental evidence,was spot-highlighted for the first *** elaborately controlling the salt composition,the composite with high pyrrolic-N and minimized graphitic-N content was *** from the formation of highly crystalline PTI and electrochemically favorable pyrrolic-N configurations,the composite delivered an unusual reverse growth and record-level cycling stability even after 5000 cycles along with high reversible capacity and outstanding full-cell capacity *** work broadens the energy storage applications of C_(3)N_(4) and provides new prospects for the design of advanced all-carbon electrodes.

关键词： anode highly crystalline C_(3)N_(4) N configuration sodium-ion batteries ultra-long cyclic stability

Implantable Electrochemical Microsensors for In Vivo Monitoring of Animal Physiological Information

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Nano-Micro Letters 2024年第3期16卷 183-211页

作者： Jin Zhou Shenghan Zhou Peidi Fan Xunjia li Yibin ying Jianfeng ping Yuxiang Pan Laboratory of Agricultural Information Intelligent Sensing College of Biosystems Engineering and Food ScienceZhejiang UniversityHangzhou 310058People’s Republic of China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311200People’s Republic of China

In vivo monitoring of animal physiological information plays a crucial role in promptly alerting humans to potential diseases in animals and aiding in the exploration of mechanisms underlying human ***,implantable electrochemical microsensors have emerged as a prominent area of *** microsensors not only fulfill the technical requirements for monitoring animal physiological information but also offer an ideal platform for *** have been extensively studied for their ability to monitor animal physiological information in a minimally invasive manner,characterized by their bloodless,painless features,and exceptional *** development of implantable electrochemical microsensors for in vivo monitoring of animal physiological information has witnessed significant scientific and technological advancements through dedicated *** review commenced with a comprehensive discussion of the construction of microsensors,including the materials utilized and the methods employed for *** this,we proceeded to explore the various implantation technologies employed for electrochemical *** addition,a comprehensive overview was provided of the various applications of implantable electrochemical microsensors,specifically in the monitoring of diseases and the investigation of disease ***,a concise conclusion was conducted on the recent advancements and significant obstacles pertaining to the practical implementation of implantable electrochemical microsensors.

关键词： Electrochemical microsensors Implantable sensors In vivo monitoring Animal physiological information

Sarcomatoid intrahepatic cholangiocarcinoma with good patient prognosis after treatment with Huaier granules following hepatectomy:A case report

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World Journal of Clinical Cases 2022年第9期10卷 2829-2835页

作者： Ji-Ye Feng Xian-Peng li Zong-Yang Wu li-ping ying Chang Xin Zhen-Zhen Dai Yao Shen Yi-Feng Wu Department of Hepatobiliary&Pancreas Surgery The Affiliated People’s Hospital of Ningbo UniversityNingbo 315040Zhejiang ProvinceChina Department of Infectious Disease The Affiliated People’s Hospital of Ningbo UniversityNingbo 315040Zhejiang ProvinceChina Department of Pathology The Affiliated People’s Hospital of Ningbo UniversityNingbo 315040Zhejiang ProvinceChina Department of Radiology The Affiliated People’s Hospital of Ningbo UniversityNingbo 315040Zhejiang ProvinceChina

BACKGROUND Sarcomatoid intrahepatic cholangiocarcinoma(SICC)is an extremely rare and highly invasive malignant tumor of the *** precise pathologic mechanism of SICC has not been clearly identified,and the prognosis is very *** effectiveness of the treatment strategy of radical hepatectomy combined with Huaier granules has not yet been *** SUMMARY The patient was a 69-year-old male who presented with intermittent right upper abdominal pain for one month and 4-pound weight loss before *** magnetic resonance imaging and magnetic resonance cholangiopancreatography showed multiple stones in the bile ducts accompanied by dilatation of the intrahepatic and extrahepatic bile *** preoperative diagnoses were right intrahepatic bile duct stones and extrahepatic bile duct stones;thus,surgical resection was *** showed that the bile duct wall of the right anterior lobe was thickened,and a mass was visible in the ***,a biopsy was performed,and rapid frozen-section biopsy analysis indicated that the tumor was *** final diagnosis was SICC(T1a N0M0).Huaier granules were taken by the patient as anticancer therapy after *** patient attended follow-up for 72 mo with no tumor recurrence or *** Sarcomatous intrahepatic cholangiocarcinoma is an extremely rare,aggressive malignancy,and the diagnostic gold standard is pathological *** reported the first case of successful treatment with Huaier granules as anticancer therapy after surgery,which indicated that Huaier granules are safe and *** studies are needed to study the anticancer molecular mechanisms of Huaier granules in sarcomatous intrahepatic cholangiocarcinoma.

关键词： Sarcomatous intrahepatic cholangiocarcinoma Hepatectomy Huaier granules Diagnose Therapy Case report

Afracentrism in By the light of my father＇s smile

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Sino-US English Teaching 2009年第5期6卷 31-36页

作者： li ping HU Xiao-ying College of Foreign Languages and Cultures Ningxia University Yinchuan 750021 China

The novel, By the light of my father＇s smile, is the book which comprehensively embodies Alice Walker＇s womanist thoughts. In the novel, she describes a mixed tribe with both African and Indian ancestry. Through the mundo tribe with African features, she expresses her thoughts of Afracentrism. First of all, Alice Walker holds that African Americans should cherish the traditional African indigenous religion-animism, for it promotes equality and interrelateness among things. Furthermore, through Mundo people＇s cultural activities of making pots and their initiation songs, she intends to express such a womanist idea that survival and wholeness of entire race derives from that of each race, so those indigenous people who have been overrun by the powerful and wealthy western world are supposed to forgive the westerners＇ wrong doings, for only love can guide the entire race to achieve survival and wholeness.

关键词： Africentrism By the light of my father's smile Alice Walker

Influence of powder oxidation on powder properties and formability in H13 hot-work steels processed by electron beam melting

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Journal of Iron and Steel Research International 2024年第4期31卷 924-932页

作者： Wei liu Yan Wang li-xiong Han ying-kang Wei Hui-ping Tang Shi-feng liu School of Metallurgical Engineering Xi'an University of Architecture and TechnologyXi'an 710055ShaanxiChina School of Engineering Zhejiang University City CollegeHangzhou 310015ZhejiangChina

The oxygen content of metal powder is decisive for the recyclability of *** research on the effect of oxygen content on powder properties and material formability has practical significance for economical production with additive manufacturing while preventing the waste of ***,we deliberately oxidized the powder by baking at high temperature to increase the oxygen content in the powder and gave the calculation method of the oxygen content in the powder oxidation *** majority of oxygen element was found in the oxide particles in the powder and the oxide flm on the powder surface,which did affect the flowability of the *** is worth noting that the increase in the oxygen content does not change the phase of H13 steel,but it can promote the molten pool flow and obtain a smoother *** increase in the oxygen content in the powder is not the decisive factor for the formability and defects of the printed *** is the combined effect of the powder deformation,the increase in the oxygen content,and the impurity pollution after repeated use,which leads to the limitation of repeated utilization of the powder.

关键词： Additive manufacturing Electron beam melting H13 steel powder-Powder oxidation