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Function,mechanism of action,metabolism,and commercial application of Lonicera japonica:a review 被引量:1
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作者 Xinli Yang Dan Yan 《Food Science and Human Wellness》 2025年第3期783-805,共23页
Lonicera japonica(honeysuckle)is a traditional Chinese medicinal food,in which the main active ingredients are phenolic acids,polysaccharides,flavonoids,and volatile oils.They have various biological activities,includ... Lonicera japonica(honeysuckle)is a traditional Chinese medicinal food,in which the main active ingredients are phenolic acids,polysaccharides,flavonoids,and volatile oils.They have various biological activities,including antiviral,antibacterial,antioxidant,hypoglycemic and lipid-lowering,and anti-inflammatory effects.This review summarizes the health effects and pharmacodynamic mechanisms of L.japonica extracts and the major active ingredients in these extracts,and the structures,metabolic process in vivo,and biotransformation processes of these compounds.In addition,the current status of the development of L.japonica-related functional foods is summarized.The aim is to provide a theoretical basis and reference for the further development and use of the active ingredients in L.japonica as functional foods for disease prevention and treatment. 展开更多
关键词 Lonicera japonica extract and functional components Health effects MECHANISMS commercial application
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Advancements in perovskites for solar cell commercialization:A review 被引量:1
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作者 Tejas Dhanalaxmi Raju Vignesh Murugadoss +3 位作者 Kiran A.Nirmal Tukaram D.Dongale Arul Varman Kesavan Tae Geun Kim 《Advanced Powder Materials》 2025年第2期32-75,共44页
The efficiency of perovskite solar cells(PSCs)has progressed rapidly,exceeding 26%for single-junction devices and surpassing 34%in perovskite-silicon tandem configurations,establishing PSCs as a promising alternative ... The efficiency of perovskite solar cells(PSCs)has progressed rapidly,exceeding 26%for single-junction devices and surpassing 34%in perovskite-silicon tandem configurations,establishing PSCs as a promising alternative to traditional photovoltaic technologies.However,their commercialization is constrained by significant stability challenges in outdoor environments.This review critically examines key cell-level issues affecting the long-term performance and reliability of PSCs,focusing on instabilities arising from the intrinsic phases of the perovskite absorber and external stress factors.Mitigation strategies to enhance stability are discussed,alongside recent advancements in charge transport layers,electrodes,and interfaces aimed at reducing environmental degradation and improving energy level alignment for efficient charge extraction.The importance of accelerated aging tests and the establishment of standardized protocols is underscored for accurately predicting device lifetimes and identifying failure mechanisms,thereby ensuring stability under real-world conditions.Furthermore,a comprehensive techno-economic analysis evaluates how advancements in materials and strategic innovations influence efficiency,durability,and cost,which are critical for the commercial adoption of PSCs.This review delineates the essential steps required to transition PSC technology from laboratory-scale research to widespread commercialization within the global photovoltaic industry. 展开更多
关键词 Perovskites Solar cells commercialIZATION Techno-economic analysis DEGRADATION Charge transport layers
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Research on Optimization of Performance Management of Rural Commercial Bank Tellers
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作者 Haojie Li 《Proceedings of Business and Economic Studies》 2025年第4期52-58,共7页
Amid the deepening implementation of rural revitalization strategies and rapid fintech development,rural commercial banks-core financial institutions serving agriculture,rural areas,and farmers(the“three rurals”)and... Amid the deepening implementation of rural revitalization strategies and rapid fintech development,rural commercial banks-core financial institutions serving agriculture,rural areas,and farmers(the“three rurals”)and county economies-have seen their tellers’service quality and operational efficiency directly impact market competitiveness and sustainable development capabilities.This study examines teller performance management in rural commercial banks from a business management perspective.By analyzing structural issues in existing performance management systems and integrating theoretical frameworks with industry case studies,it proposes systematic optimization measures.The research aims to provide practical references for establishing scientific and efficient teller performance management systems in rural commercial banks,thereby enhancing service quality,strengthening talent support,and better serving the rural financial market. 展开更多
关键词 Rural commercial bank TELLER Performance management Optimization path Business management
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The Charm of the Venue of the China-LAC Summit Zhengzhou,An Ancient Commercial Capital Rejuvenated with Intelligence,Connecting the World from the Heart of Heaven and Earth
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《China's Foreign Trade》 2025年第5期26-27,共2页
Zhengzhou,located at the eastern foot of Mount Song and along the banks of the Yel low River,sits at the heart of China.It is the capital of Henan Province and one of China’s eight great ancient capitals.Historically... Zhengzhou,located at the eastern foot of Mount Song and along the banks of the Yel low River,sits at the heart of China.It is the capital of Henan Province and one of China’s eight great ancient capitals.Historically known as the“Center of Heaven and Earth”,it is now praised as the“Green City”As a national central city expl icit ly suppor ted by the Chinese government and a core growth pole for high-quality regional development. 展开更多
关键词 Yellow River Zhengzhou China LAC Summit eight great ancient capitals green city ancient commercial capital heart heaven earth INTELLIGENCE
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Research on the Realization of the Commercial Value of Jewelry Designers
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作者 Lanzhi Luo 《Proceedings of Business and Economic Studies》 2025年第3期251-258,共8页
With rising consumer spending power and growing demand for personalization,the role of jewelry designers in product innovation and brand building has become increasingly prominent,and the realization of their commerci... With rising consumer spending power and growing demand for personalization,the role of jewelry designers in product innovation and brand building has become increasingly prominent,and the realization of their commercial value has emerged as a key competitive driver in the industry.This paper employs a combination of literature review and case analysis to first define the connotation and evaluation dimensions of jewelry designers’commercial value.Next,it examines successful practices of representative designers at home and abroad,analyzing their core strategies in brand development,market positioning,channel collaboration,and innovation models.Finally,based on these findings,it proposes a systematic path for building personal brands,deepening value‐chain collaboration,and exploring cross-field innovation.The study demonstrates that effective brand building and differentiated positioning can significantly enhance a designer’s bargaining power,while coordinated upstream–downstream value-chain efforts and diverse innovation models—spanning technology and culture—provide vital support for sustained growth in commercial value.This paper aims to offer actionable strategic frameworks for industry practitioners and decision makers and to outline directions for future research. 展开更多
关键词 Jewelry designer commercial value Brand building Value-chain collaboration Innovation model
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Investigation into Custom-Built Operational Models for Small and Medium-Sized Commercial Banks
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作者 Jie Zhang Ming Chen Xingzhi Song 《Proceedings of Business and Economic Studies》 2025年第2期236-246,共11页
This research centers on commercial banks'human resource allocation.It constructs a staffing model grounded in human capital value creation theory and analyzes relevant factors through longitudinal panel data regr... This research centers on commercial banks'human resource allocation.It constructs a staffing model grounded in human capital value creation theory and analyzes relevant factors through longitudinal panel data regression.Taking City Commercial Bank A as an instance,the model identifies 12.3%redundant positions and matches jobs with business scale.Additionally,the study proposes a“staffing effectiveness salary”system,providing a framework for optimizing commercial bank human capital in the digital age. 展开更多
关键词 commercial banks Staffing optimization Human capital contribution rate Cost elasticity Performance linkage
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Decoding the Commercial“Rubik’s Cube”In the New Consumption Era
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作者 Ada Wang Zhang Ximeng 《China's Foreign Trade》 2025年第2期49-52,共4页
The 51st China Beijing International Gifts,Premium and Houseware Exhibition(hereinafter referred to as the Gifts Exhibition) officially opened the kaleidoscope of creative gifts at China International Exhibition Cente... The 51st China Beijing International Gifts,Premium and Houseware Exhibition(hereinafter referred to as the Gifts Exhibition) officially opened the kaleidoscope of creative gifts at China International Exhibition Center (Chaoyang Pavilion) on March 20th.More than 900 exhibitors built an aesthetic corridor of quality life with 200,000 gifts. 展开更多
关键词 Chaoyang Pavilion premium houseware exhibition new consumption era kaleidoscope creative gifts commercial decoding creative gifts China International Exhibition Center Rubiks cube
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International Comparison of Training Goals in Wooden Construction Education:Focusing on the Contents of Wooden Construction Systems for Housing,Commercial,and Public Buildings
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作者 Miho Akita Rio Shibata +2 位作者 Shin Murakami Norie Kawano Satoka Takahashi 《Journal of Civil Engineering and Architecture》 2025年第11期513-522,共10页
This study aims to examine the challenges and future directions of large-scale wooden construction education at universities in Japan and Finland.It compares the wooden construction curricula at universities and the a... This study aims to examine the challenges and future directions of large-scale wooden construction education at universities in Japan and Finland.It compares the wooden construction curricula at universities and the architectural education initiatives undertaken by firms specializing in large-scale wood construction design in both countries.The target applications for large-scale wooden construction are residential,commercial,and public buildings.Comparing university education revealed many commonalities between the two countries,allowing them to be classified into two types:“seminar-centered”and“lecture-centered”.Japanese universities are categorized by building type and scale for educational purposes.Finnish universities focus their education on the properties and functions of wood.Based on these results,we infer that incorporating both Japan’s architecture-planning-focused education and Finland’s materials-focused education into teaching,using familiar housing buildings as a theme,will lead to the wider adoption of large-scale wooden construction. 展开更多
关键词 Wooden construction education large-scale wooden buildings systems housing buildings commercial buildings public buildings
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Innovation and Pricing of Commercial Health Insurance in the New Technology Era
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作者 Zhang Chenghe 《Journal of Humanities and Nature》 2025年第2期140-162,共23页
This study investigates the innovation pathways and product pricing strategies of commercial health insurance in the era of new technologies.Drawing upon recent developments in InsurTech—including artificial intellig... This study investigates the innovation pathways and product pricing strategies of commercial health insurance in the era of new technologies.Drawing upon recent developments in InsurTech—including artificial intelligence(AI),the Internet of Things(IoT),blockchain,and big data analytics—we analyze how these technologies reshape underwriting,risk management,and actuarial pricing models.The research employs a theoretical framework rooted in information economics and applies generalized linear models(GLMs)alongside machine learning approaches to demonstrate how technologydriven data sources,such as wearable devices and real-time health monitoring,enhance pricing precision and risk stratification.Empirical illustrations highlight global cases including wellness-linked insurance programs,telemedicine-integrated policies,blockchain-enabled claims,and China’s inclusive Huiminbao schemes.Findings suggest that new technologies improve efficiency,reduce information asymmetry,and foster product innovation,while simultaneously raising challenges of data privacy,algorithmic fairness,and market sustainability.The paper concludes that successful integration of advanced technologies into health insurance requires balancing actuarial accuracy with equity considerations,robust regulatory frameworks,and consumer trust.These insights contribute to the broader discourse on how digital transformation can strengthen health insurance systems and promote public health outcomes worldwide. 展开更多
关键词 commercial health insurance InsurTech Artificial Intelligence Digital Transformation
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Adaptations,cultivation and commercial prospects of polar microalgae
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作者 Kiat Fatt CHIA Chiew Yen WONG +10 位作者 Rhun Yian KOH Choy Sin LEE Soi Moi CHYE Yih Yih KOK Siti Aqlima AHMAD Peter CONVEY Leyla Cárdenas TAVIE WANG Wei LUO Jiangyi Veeranoot NISSAPATORN Chooi Ling LIM 《Advances in Polar Science》 2025年第1期18-40,共23页
Polar microalgae are microscopic organisms adapted to survive in cold and extreme habitats such as sea-ice,glaciers,lakes and snow.These microorganisms provide an essential basis as primary food sources in polar ecosy... Polar microalgae are microscopic organisms adapted to survive in cold and extreme habitats such as sea-ice,glaciers,lakes and snow.These microorganisms provide an essential basis as primary food sources in polar ecosystems.Despite their ecological importance,polar microalgae remain relatively unexplored compared to their tropical and temperate counterparts,largely due to the practical challenges of obtaining and maintaining material from the harsh polar environments.However,interest has recently surged due to their specific adaptations and potential for utilization in various fields.This review explores the survival strategies of polar microalgae and their commercial applications in healthcare and other fields.We also consider the processes involved in processing polar microalgae,from cultivation to extraction of bioactive compounds.Our findings highlight a growing need for research in this rapidly evolving field to unlock the potential of polar microalgae in multiple fields. 展开更多
关键词 polar microalgae microalgal adaptations microalgal processing potential commercial applications
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Realization of Highly Reliable 10-20-Level Instability Optical Phase Transmission over a 1402-Kilometer Commercial Fiber-Optic Network
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作者 Yang Xu Libo Li +5 位作者 Kan Zhao Pingan Ma Zhiwei Zhang Qi Shen Faxi Chen Haifeng Jiang 《Chinese Physics Letters》 2025年第12期84-88,共5页
Optical phase transfer via fiber optics is the most effective method for optical frequency standard comparison on the scale below thousands of kilometers.However,the monotonic phase discrimination range of conventiona... Optical phase transfer via fiber optics is the most effective method for optical frequency standard comparison on the scale below thousands of kilometers.However,the monotonic phase discrimination range of conventional optical phase-locked loops is limited,and link delays restrict the control bandwidth,which makes it a challenge to achieve a continuously reliable optical link.This paper presents an event-timing-based phase detection method that overcomes the monotonic phase discrimination range limitation of conventional phase-locked loops through dual-edge timestamp recording,achieving an optical phase measurement resolution on the order of 10 attoseconds.With such a technique,we established a 7-segment-cascaded optical link over 1402km of commercial fiber while sharing dense wavelength division multiplexing(DWDM)channels with live telecom traffic.The system maintained continuous operation for 11.7 days without phase cycle slips despite encountering 15 km aerial fiber noise up to 21000 rad^(2)·Hz^(−1)·km^(−1)at 1 Hz.Relative instabilities of the link are 3.7×10^(−15)at 1 s and 3.9×10^(−20)at 100000 s. 展开更多
关键词 fiber optics optical phase locked loops optical phase transfer event timing based phase detection link delays commercial fiber optic network optical frequency standard comparison monotonic phase discrimination range
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A simplified ratiometric fluorescent sensing strategy for enhanced detection of alkaline phosphatase employing Prussian blue nanozymes and commercially available chromogen
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作者 Mingyue Luo Kehui Zhang +5 位作者 Honghong Rao Jianying Li Xin Xue Panpan Sun Xiaoquan Lu Zhonghua Xue 《Chinese Chemical Letters》 2025年第9期413-418,共6页
The traditional nanozymes-based ratiometric fluorescence sensing platforms usually necessitate the supplementary addition of fluorescent probes,therefore greatly restricting its convenient and broad application.In thi... The traditional nanozymes-based ratiometric fluorescence sensing platforms usually necessitate the supplementary addition of fluorescent probes,therefore greatly restricting its convenient and broad application.In this study,a highly sensitive and selective ratiometric fluorescence platform for alkaline phosphatase(ALP)detection was established,only employing Prussian blue(PB)nanozymes and a commercially available chromogen of o-phenylenediamine(OPD).PB nanozymes with remarkable peroxidaselike(POD-like)activity can effectively catalyze OPD chromogen to yield 2,3-diaminophenazine(OPDox)with an intense yellow fluorescence at 573 nm emission peak.Target ALP can facilitate ascorbic acid 2-phosphate(AAP)dephosphorylation to generate phosphate and ascorbic acid(AA).Significantly,both these two resultant hydrolysis products could effectively decrease the OPDox generation via a dualpath based inhibition on the PB nanozymes POD-like activity.On the other hand,the generated dehydroascorbic acid(DHAA)from AA oxidation would exclusively react with OPD chromogen to yield3-(dihydroxyethyl)furo[3,4-b]quinoxaline-1-one(DFQ)with a strong blue fluorescent signal at 434nm,which further providing a significant enhancement on the sensing selectivity of ALP detection.As a result,an increased yellow fluorescence of OPDox and decreased blue fluorescence of DFQ could be clearly observed with different ALP addition.A robust linear relationship between the fluorescence ratio of F_(434)/F_(573)and ALP activity ranging from 0.25U/L to 6U/L was obtained,with a low detection limit of 0.112 U/L.This proposed method demonstrates high sensitivity,excellent selectivity,cost-effectiveness,and operational simplicity,yet enabling an effective detection of ALP levels in human serum. 展开更多
关键词 Ratiometric fluorescence Prussian blue nanozymes Peroxidase-like activity commercially available chromogens Alkaline phosphatase
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A Potential Commercialization Method for Gas Production from Off-Shore Hydrate Reservoirs
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作者 Baojiang Sun Jinsheng Sun +3 位作者 Youqiang Liao Miao Dong Jie Zhong Praveen Linga 《Engineering》 2025年第10期176-186,共11页
Depressurization and heat injection are viewed as the main methods to be used in natural gas hydrate(NGH)exploitation.However,these methods have limitations,such as low energy-utilization efficiency or a limited extra... Depressurization and heat injection are viewed as the main methods to be used in natural gas hydrate(NGH)exploitation.However,these methods have limitations,such as low energy-utilization efficiency or a limited extraction range,and are still far from commercial exploitation.In this work,we propose a potential commercial method to exploit NGHs by effectively using geothermal energy inside deep reservoirs.Specifically,a loop well structure is designed to economically extract geothermal energy.Based on an analysis of our developed model,when the looping well is coupled with depressurization,the profits of high NGH production can surpass the drilling costs of extracting geothermal energy.Moreover,as the temperature of fluids from the geothermal layer exceeds 62℃,the fluid heat is mainly consumed by the rock matrix of the hydrate formation,instead of promoting NGH dissociation.Based on this threshold temperature,a loop well drilled to a depth of about 4000 m for hydrate sediment in the Shenhu area of the South China Sea would be able to efficiently extract geothermal energy,leading to an approximate73%increase in gas production in comparison with conventional depressurization.An economic analysis suggests that our proposed method can reduce the exploitation cost of methane to 0.46 USD·m^(-3).Furthermore,as the hydrate saturation increases to 0.5,the exploitation cost can be further reduced to 0.14 USD·m^(-3).Overall,a looping well coupled with geothermal energy and depressurization is expected to pave the way for commercial NGH exploitation. 展开更多
关键词 Hydrate exploitation Looping wells Geothermal coupling with depressurization commercialIZATION
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The Predicaments and Countermeasures of the Chinese Commercial Bibliographic Databases 被引量:1
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作者 Wang Fengnian 《Journalism and Mass Communication》 2017年第1期17-24,共8页
In China, the vast majority of the bibliographic databases is commercial, such as China National Knowledge Infrastructure (CNKI), Wanfang Database, Longyuan Journal Net, CQVIP Company, however, there are also non-pr... In China, the vast majority of the bibliographic databases is commercial, such as China National Knowledge Infrastructure (CNKI), Wanfang Database, Longyuan Journal Net, CQVIP Company, however, there are also non-profit open access (OA) databases, such as journal database jointly established by Chinese Academy of Social Sciences (CASS) and National Social Science Fund. The commercial bibliographic databases have to face many difficulties: intellectual property disputes, the benefit distribution between the hardcopy periodical and the commercial bibliographic database, the lack of quality assessment about the commercial bibliographic databases, the need of improving digital technology as well as the lack of a unified database regulation, which restricts the development of commercial bibliographic databases. This paper puts forward the countermeasures from the perspective of how to enhance the governmental management; how to protect the intellectual property fight; how to improve the technical standard of the commercial bibliographic databases; how to build interest distribution between the hardcopy periodical and the commercial bibliographic database; how to improve the quality of commercial bibliographic databases; and how to improve the industrial chain of the commercial bibliographic databases. 展开更多
关键词 the commercial bibliographic databases the predicaments of the commercial bibliographic databases the strategies of the commercial bibliographic databases
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Language Games in Turkish and Russian Television Commercials
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作者 Nukhet ELTUT KALENDER 《Journal of Literature and Art Studies》 2016年第11期1371-1381,共11页
Advertisement and presentation of a product is the most important stage in the process of marketing. Product advertisement mostly benefits from the audiovisual commercials and advertisements on mass media (television... Advertisement and presentation of a product is the most important stage in the process of marketing. Product advertisement mostly benefits from the audiovisual commercials and advertisements on mass media (television, radio, newspaper, magazine, poster, brochure, Internet etc.). Today, TV, radio and Intemet are considered to have great importance among the most widely used means of mass media. Initial advertisement for each product plays a significant role in getting a bigger market share for that product. Thus, manufacturing companies need brands, taglines, catchphrases and jingles for their commercials broadcasted on mass media. Astonishing words or expressions which catch the consumers' attention play a highly significant role in commercials. Slogans which are created sometimes using melodious or rhythmical expressions, and imperatives, or sometimes slang and daily language support convincing power of the commercials. The mentioned slogans are indeed examples of creativeness. This study primarily includes the commercials, ways to produce slogans and their characteristics, together with identifying the slogans in the commercials broadcasted in Turkey and Russia, created by using language games, which include brand names. Then, aforementioned slogans will be reviewed with regards to artistic stylistics, a sub branch of functional stylistics. Finally, similar and different aspects of the language games in Turkish and Russian commercials will be compared based on the findings obtained from the analyses. 展开更多
关键词 television commercials brands in TV commercials commercial slogans on TV language games artisticstylistics
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Effect of nano TiN/Ti refiner on as-cast and hot-working microstructure of commercial purity aluminum 被引量:4
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作者 蔡思祺 李玉洁 +2 位作者 谌援 李欣蔚 薛丽红 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第7期1890-1897,共8页
A novel type nano TiN/Ti composite grain refiner (TiN/Ti refiner) was prepared by high energy ball milling, and its effect on as-cast and hot-working microstructure of commercial purity aluminum (pure Al) was inve... A novel type nano TiN/Ti composite grain refiner (TiN/Ti refiner) was prepared by high energy ball milling, and its effect on as-cast and hot-working microstructure of commercial purity aluminum (pure Al) was investigated. The results show that TiN/Ti refiner exhibits excellent grain refining performances on pure Al. With an addition of 0.2% TiN/Ti refiner, the average grain size of pure Al decreases to 82 μm, which is smaller than that of pure Ti and Al 5Ti 1B master alloy as refiners. The microstructure of weld joint of pure Al with 0.1% TiN/Ti refiner is fine equiaxed grains and the hardness of weld joint is higher than that of the base metal. For pure Al with 40% cold deformation and recrystallization at 250 °C for 1.0 h, the grains of the sample added 0.1% Ti powder have an obvious grain growth behavior. In contrast, oriented grains caused by deformation have been eliminated, and there is no obvious grain growth in pure Al refined with 0.1% TiN/Ti refiner, indicating that nano TiN in the refiner inhibits the growth of grain during recrystallization. 展开更多
关键词 nano TiN/Ti composite grain refiner commercial purity aluminum grain refinement weld joint deformation and recrystallization
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How does the Civil Code Process the Civil and Commercial Relations According to the Insurance Law
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作者 WANG Rong 《International English Education Research》 2015年第12期68-73,共6页
The relationship between the civil law and commercial law is a long-standing issue of controversy in the area of private law, and it is also an issue of unavoidably legislative selection during the codification the ci... The relationship between the civil law and commercial law is a long-standing issue of controversy in the area of private law, and it is also an issue of unavoidably legislative selection during the codification the civil code in almost every country. Since the founding of the People Republic of China, China has carried out the codification of civil code for four times, and since the part^s eighteen plenary session officially proposed the 'codification of civil code', the issue of the civil and conmaercial relation draws the attention again, either unification or division of civil and commercial law directly affects the system and content of the civil code, and affects how to process the relationship between the civil law and commercial law during the codification of the civil code as well. The codification of the civil code should not only consider the legislative tradition of the civil and commercial legislation and the current legal system, but also pursue characteristics of the commercial law, in a system of combining civil and commercial law, through adding commercial law into the general principle of civil law; the existing commercial law should be separately retained. 展开更多
关键词 The civil code unification of civil and commercial law division of civil and commercial law commercial custom
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Deformation and fracture behavior of commercially pure titanium with gradient nano-to-micron-grained surface layer 被引量:3
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作者 尹雁飞 徐巍 +2 位作者 孙巧艳 肖林 孙军 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第3期738-747,共10页
Titanium with gradient nano-to-micron scale grains from surface to matrix was fabricated by surface mechanical grinding treatment(SMGT) at room temperature.The SMGT-treated titanium shows higher strength than that of ... Titanium with gradient nano-to-micron scale grains from surface to matrix was fabricated by surface mechanical grinding treatment(SMGT) at room temperature.The SMGT-treated titanium shows higher strength than that of as-received one,but moderate ductility between those of ultra-fine grained(UFG) and coarse-grained titanium.Tensile stress-strain curves of SMGT-treated titanium show double strain hardening regimes.The strain hardening rate(dσ/dε) decreases with increasing strain in tensile deformation.The high strain hardening rate at initial yielding is attributed to nano-to-micron-grained surface layer.The low strain hardening rate at large plastic strain regime primarily results from coarse-grained matrix.The SMGT-treated titanium shows a ductile fracture mode with a large number of dimples.The small size of dimples in the treated surface layer is due to the combination of the high strength and strain hardening exponent.The difference between dimple size in nano-to-micron-grained surface layer and coarse-grained matrix is discussed in terms of plastic zone size at the tip of crack in the SMGT-treated titanium. 展开更多
关键词 surface mechanical grinding treatment commercially pure titanium gradient nano-to-micron grain strain hardening DIMPLE
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Comparison of microstructures and mechanical properties between forging and rolling processes for commercially pure titanium 被引量:6
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作者 徐春 朱文峰 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第8期1939-1946,共8页
In order to reveal the differences caused by forging and rolling process for titanium ingots, hot compression behavior, mechanical properties and the microstructures of forged billets and rolled ones were investigated... In order to reveal the differences caused by forging and rolling process for titanium ingots, hot compression behavior, mechanical properties and the microstructures of forged billets and rolled ones were investigated in detail using Gleeble-1500 thermal mechanical simulator, universal testing machine and optical microscope (OM). The compression deformation experimental data of commercially pure titanium (CP-Ti) were mapped to be a T vs lg diagram in which data fall into three distinct regions, i.e., three-stage work hardening, two-stage work hardening and flow softening, which can be separated by border lines at 17.5 and 15.4 for lg Z, where Z represents the Zener-Hollomon parameter. The deformation twin is found to have higher Z-value corresponding to the work hardening region. The differences in microstructures and mechanical properties for two kinds of billets indicate that forged billet consists of deformation twins and some twin intersections, and many twins cross the grain boundaries. However, nearly no twins can be seen in the microstructure of billet formed by rolling under optical microscope (OM), but there are equiaxed and platelike grains. Tensile tests and Vickers hardness test indicate that yield strength, tensile strength and microhardness of the samples after forging are higher than those after rolling. 展开更多
关键词 commercially pure titanium(CP-Ti) forging process rolling process MICROSTRUCTURES mechanical properties
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Investigation and analysis on indoor air quality of large commercial office building in summer 被引量:1
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作者 魏小清 李念平 +2 位作者 周慧 肖书博 胡丽君 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期243-245,共3页
To study the indoor air qualities(IAQ)of large commercial office buildings in Hunan province of China and the corresponding improvement methods,the IAQ of a large commercial office building in Changsha in July,2008,... To study the indoor air qualities(IAQ)of large commercial office buildings in Hunan province of China and the corresponding improvement methods,the IAQ of a large commercial office building in Changsha in July,2008,is investigated.A questionnaire survey and field tests are used to collect data.According to the data of twelve rooms in this building,objective evaluation and the subjective evaluation of the IAQ are obtained.Almost all of the environmental parameters in these rooms basically meet the standards of the objective evaluation.But the average concentration of carbon dioxide in most rooms cannot reach the value of the cleanliness standards,1 255 mg/m^3.The average acceptability of the IAQ in these rooms is 71%,which is lower than the value of the ASHRAE 55—1992 standards,80%.The proper increase in the wind speed and the indoor fresh air supply can greatly improve the objective evaluation and the subjective evaluation of the IAQ. 展开更多
关键词 large commercial office building indoor air quality(IAQ) objective evaluation subjective evaluation
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