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Influence of Carbon Content on S Zorb Sorbent Activity 被引量:4
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作者 Xu Li 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2013年第2期6-10,共5页
The reaction activity of S Zorb sorbents with different sulfur contents was investigated, and the structure and composition of carbon-containing sorbents were characterized by XRD, FT-IR and TG-MS in order to delve in... The reaction activity of S Zorb sorbents with different sulfur contents was investigated, and the structure and composition of carbon-containing sorbents were characterized by XRD, FT-IR and TG-MS in order to delve into the kind and morphology of carbon on the sorbent. Test results have revealed that coke could be deposited on the S Zorb sorbent during the operating process, and the coke content was an important factor influencing the reaction performance of the S Zorb sorbent. Retention of a definite amount of coke on the sorbent while securing the desulfurization activity of the S Zorb sorbent would be conducive to the reduction of octane loss of reaction product. 展开更多
关键词 s Zorb sorbent carbon content desulfurization activity octane loss
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Influence of S Contents on the Hydrogen Blistering and Hydrogen Induced Cracking of A350LF2 Steel 被引量:4
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作者 Shu-qi Zheng Chang-feng Chen Li-qiang Chen 《Materials Sciences and Applications》 2011年第7期917-921,共5页
In the present work, the effects of chemical compositions on the hydrogen blistering and hydrogen induced cracking of A350LF2 steel with different S contents were studied. Four types of A350LF2 steels were evaluated b... In the present work, the effects of chemical compositions on the hydrogen blistering and hydrogen induced cracking of A350LF2 steel with different S contents were studied. Four types of A350LF2 steels were evaluated by immersing samples in H2S-saturated NACE solution. The hydrogen blistering, crack length rate(CLR), crack thickness rate(CTR) and crack sensitivity rate(CSR) were evaluated. The results show that there are many hydrogen blisters on the sample surface with S content of 0.021%, a few on the sample surface with S content of 0.019% and 0.012% and no one on the surface with S content of 0.002%. There were 12, 2 and 1 strips of cracks of longer than 0.3 mm on the evaluated cross sections with S content of 0.021%, 0.019% and 0.012%, respectively. There was no any crack in the sample with 0.002% S. The corrosion rate was also evaluated. The S content has no obvious influence on the corrosion rate. 展开更多
关键词 A350LF2 s content HYDROGEN BLIsTERING HYDROGEN Induced CRACKING
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Information content method for evaluating diagnostic tests and its comparison of power with other methods 被引量:1
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作者 陈平雁 王斌会 莫一心 《Journal of Medical Colleges of PLA(China)》 CAS 1996年第2期106-113,共8页
This paper derives the variance of the information content and develops its statistical inference method. We describe the relations between information content and sensitivity, specificity, efficiency, prevalence rate... This paper derives the variance of the information content and develops its statistical inference method. We describe the relations between information content and sensitivity, specificity, efficiency, prevalence rate. If sensitivity, specificity and efficiency are fixed, the closer to 0. 5 the prevalence rate is, the more the information content. If prevalence rate and efficiency are fixed, the closer to each other the sensitivity and specificity are, the more the information content. We compare the power of information content method, efficiecy test, Youden's index test and kappa coefficient method. The information content method has higher power than the other methods in most conditions. It is especially sensitive to the difference between two sensitivities. It comes to conclusion that the information content method has more virtues than the other methods mentioned in this paper. 展开更多
关键词 DIAGNOsTIC test INFORMATION content POWER KAPPA COEFFICIENT Youden’s index
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Effect of H_(2)S content on relative permeability and capillary pressure characteristics of acid gas/brine/rock systems:A review 被引量:1
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作者 Xiaoyan Zhang Qi Li +2 位作者 Mathias Simon Guodong Zheng Yongsheng Tan 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2022年第6期2003-2033,共31页
Geological storage of acid gas has been identified as a promising approach to reduce atmospheric carbon dioxide(CO_(2)),hydrogen sulfide(H_(2)S)and alleviate public concern resulting from the sour gas production.A goo... Geological storage of acid gas has been identified as a promising approach to reduce atmospheric carbon dioxide(CO_(2)),hydrogen sulfide(H_(2)S)and alleviate public concern resulting from the sour gas production.A good understanding of the relative permeability and capillary pressure characteristics is crucial to predict the process of acid gas injection and migration.The prediction of injection and redistribution of acid gas is important to determine storage capacity,formation pressure,plume extent,shape,and leakage potential.Herein,the existing experimental data and theoretical models were reviewed to gain a better understanding of the issue how the H_(2)S content affects gas density,gas viscosity,interfacial tension,wettability,relative permeability and capillary pressure characteristics of acid gas/brine/rock systems.The densities and viscosities of the acid gas with different H_(2)S mole fractions are both temperature-and pressure-dependent,which vary among the gas,liquid and supercritical phases.Water/acid gas interfacial tension decreases strongly with increasing H_(2)S content.For mica and clean quartz,water contact angle increases with increasing H_(2)S mole fraction.In particular,wettability reversal of mica to a H_(2)S-wet behavior occurs in the presence of dense H_(2)S.The capillary pressure increases with decreasing contact angle.At a given saturation,the relative permeability of a fluid is higher when the fluid is nonwetting.The capillary pressure decreases with decreasing interfacial tension at a given saturation.However,the existing datasets do not show a consistent link between capillary number and relative permeability.The capillary pressure decreases with increasing H_(2)S mole fraction.However,there is no consensus on the effect of the H_(2)S content on the relative permeability curves.This may be due to the limited availability of the relative permeability and capillary pressure data for acid gas/brine/rock systems;thus,more experimental measurements are required. 展开更多
关键词 Acid gas geological sequestration Relative permeability Capillary pressure H_(2)s content Wettability Interfacial tension
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Determination of the Content of Total Saponins in Paris daliensis H.Li et V. G. Soukoup and Paris dulongensis H. Li et S. kurita 被引量:5
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作者 Zhongjie HUANG Haiyan XIANG +3 位作者 Shaoshan ZHANG Mengjie YU Yuan LIU Hao ZHANG 《Medicinal Plant》 2017年第1期17-19,共3页
[Objectives]To determine the content of total saponins in Paris daliensis H. Li et V. G. Soukoup and Paris dulongensis H. Li et S.kurita,fill the gap in the study of Paris daliensis H. Li et V. G. Soukoup and Paris du... [Objectives]To determine the content of total saponins in Paris daliensis H. Li et V. G. Soukoup and Paris dulongensis H. Li et S.kurita,fill the gap in the study of Paris daliensis H. Li et V. G. Soukoup and Paris dulongensis H. Li et S. kurita,and lay a foundation for searching new medicinal resources of Paris L. [Methods]The perchloric acid colorimetric method and UV spectrophotometer were used to determine the content of total saponins in Paris daliensis H. Li et V. G. Soukoup and Paris dulongensis H. Li et S. kurita at 406 nm. [Results]The lowest content of total saponins in Paris daliensis H. Li et V. G. Soukoup was 2. 637%,while the highest content reached 5. 474%; the lowest content of total saponins in Paris dulongensis was 1. 806%,while the highest content reached 3. 532%. Through the methodological examination,it was found that this method was stable and reliable. [Conclusions] The content of total saponins was high in Paris daliensis H.Li et V. G. Soukoup and Paris dulongensis H. Li et S. kurita,and it was suggested to further study and find the medicinal resources of Paris L. 展开更多
关键词 PARIs daliensis H.Li ET V.G.soukoup PARIs dulongensis H.Li ET s.kurita UV sPECTROPHOTOMETRY Total sAPONINs content de termination
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Antioxidant Activity and Phenolic Compounds Content of Extracts from Ceratotheca sesamoides Endl and Striga hermonthica (Delille) Benth Used as Antheminthic in Burkina Faso
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作者 Dicko Amadou Kam Eric Sami +9 位作者 Hadidjatou Belem Konaté Almamy Tindano Basile Meda Roland Nâg-Tiéro Ahoua Angora Rémi Constant Koné Mamidou Witabouna Kaboré Adama Traoré Amadou Bayala Balé Tamboura Hamidou Hamadou 《Journal of Biosciences and Medicines》 CAS 2022年第11期203-213,共11页
The revaluation of medicinal plants in the veterinary pharmacopoeia is essential for the development of livestock in Burkina Faso. In order to justify the use of C. sesamoides and S. hermonthica in the treatment of ga... The revaluation of medicinal plants in the veterinary pharmacopoeia is essential for the development of livestock in Burkina Faso. In order to justify the use of C. sesamoides and S. hermonthica in the treatment of gastrointestinal parasitosis of small ruminants, a quantification of phenolic compounds as well as antioxidant activity and acute toxicité evaluation of both plants were performed. Acute toxicity was evaluated by administering a single dose of 2000 mg/kg body weight of aqueous extract of both plants to mice. The highest total polyphenol content for C. sesamo?des was obtained in the ethyl acetate fraction with 47.236 ± 2.57 mgEAG/100mg while that of S. hermonthica was 74.871 ± 2.57 mgEAG/100mg obtained with the n-butanol Fraction. The dichloromethane extract of S. hermonthica obtained the highest total flavonoid content with 7.31 ± 0.48 mgEQ/100 while the highest total flavonoid content of C. sesamo?des was obtained with ethyl acetate fraction with 5.4273 ± 0.35 mgEQ/100mg. The aqueous extract of C. sesamo?des obtained the highest content of condensed tannins with 3.028 ± 0.13 mgEAT/100mg. Both plant’s extracts did not show any signs of toxicity in NMRI mice after administration of the dose of 2000 mg/kg. The antioxidant activity by DPPH, FRAP and ABTS methods was good compared to those of Quercetin and Trolox taken as standard. 展开更多
关键词 C. sesamoides s. hermonthica Polyphénols content Flavonoids content Condensed Tannins Antioxidant Activity
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Antioxidant and Phenolic Content of Nuts, Oil Seeds, Milk and Milk Products Commonly Consumed in India 被引量:2
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作者 Dande Sreeramulu Manchala Raghunath 《Food and Nutrition Sciences》 2011年第5期422-427,共6页
Food provides not only essential nutrients required for life, but also bioactive compounds usefull to maintan good health and disease prevention. Abundant epidemiological evidences suggest that consumption of food ric... Food provides not only essential nutrients required for life, but also bioactive compounds usefull to maintan good health and disease prevention. Abundant epidemiological evidences suggest that consumption of food rich in antioxi-dants (non-nutritional components) can prevent degenerative diseases. A total of 26 commonly consumed nuts, oil seeds, edible oils, milk and milk products were chosen for the study. Considering the fact that antioxidant content (AOC) and phenolic contents (PC) of these foods was not established systematically in Indian context. Therefore, we have assessed and correlated the AOC and PC, an important antioxidant constituents of plant foods. AOC was assessed by DPPH (2, 2-Diphenyl-1-picryl hydrazyl) scavenging activity and FRAP (Ferric reducing antioxidant power) methods and phenolic content (PC), using Folin-Ciocalteu reagent. Among the nuts and oil seeds arecanut had the highest phenolic and antioxidant content 10841, 4220341 mg/100g respectively. In milk, edible oils and sugars the values ranged from 336 -11674 mg/100g. Jaggery had the highest PC and AOC among the foods studied . Although AOC and PC showed wide variation among the foods, AOC was correlated significantly with PC. Indeed the ‘r’ value between PC and AOC (DPPH and FRAP) was 0.99 (p < 0.01) among the nuts and oil seeds, while in milk, milk products and sugars, the “r” values ranged from 0.93 and 0.99 (p < 0.01) respectively. The overall results indicate that the phenolic compounds may be significant contributors to the AOC of the foods studied. 展开更多
关键词 ANTIOXIDANT content (AOC) 2 2’-Diphenyl -1-picryl hydrazyl (DPPH) Ferric Reducing ANTIOXIDANT Power (FRAP) Polyphenols PHENOLIC content (PC) 4 6-tripyridyl-s-triazine (TPTZ).
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A Content-Based Parallel Image Retrieval System on Cluster Architectures 被引量:1
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作者 ZHOUBing SHENJun-yi PENGQin-ke 《Wuhan University Journal of Natural Sciences》 CAS 2004年第5期665-670,共6页
We propose a content-based parallel image retrieval system to achieve high responding ability. Our system is developed on cluster architectures. It has several retrieval. servers to supply the service of content-based... We propose a content-based parallel image retrieval system to achieve high responding ability. Our system is developed on cluster architectures. It has several retrieval. servers to supply the service of content-based image retrieval. It adopts the Browser/Server (B/S) mode. The users could visit our system though web pages. It uses the symmetrical color-spatial features (SCSF) to represent the content of an image. The SCSF is effective and efficient for image matching because it is independent of image distortion such as rotation and flip as well as it increases the matching accuracy. The SCSF was organized by M-tree, which could speedup the searching procedure. Our experiments show that the image matching is quickly and efficiently with the use of SCSF. And with the support of several retrieval servers, the system could respond to many users at mean time. Key words content-based image retrieval - cluster architecture - color-spatial feature - B/S mode - task parallel - WWW - Internet CLC number TP391 Foundation item: Supported by the National Natural Science Foundation of China (60173058)Biography: ZHOU Bing (1975-), male, Ph. D candidate, reseach direction: data mining, content-based image retrieval. 展开更多
关键词 content-based image retrieval cluster architecture color-spatial feature B/s mode task parallel WWW INTERNET
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Progress on genetic and genomic research for enhanced oil content and quality in peanut 被引量:1
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作者 Boshou LIAO Yong LEI +10 位作者 Li HUANG Silong CHEN Xiaoping REN Liying YAN Yurong LI Dongxin HUAI Xiaojing ZHOU Liyun WAN Yuning CHEN Wei HUA Huifang JIANG 《Oil Crop Science》 2016年第1期1-8,共8页
Peanut or groundnut ( Arachis hypogaea L. ) is an important source of vegetable oil in the world. Genetic enhancement for high yield and high oil content has greatly contributed to enhanced pro-ductivit... Peanut or groundnut ( Arachis hypogaea L. ) is an important source of vegetable oil in the world. Genetic enhancement for high yield and high oil content has greatly contributed to enhanced pro-ductivity of peanut and increased supply of peanut oil. Further improving oil content and quality of peanut is still crucial for increasing productivity of arable land and market competitiveness of peanut oil. Based on investigation among the peanut germplasm accessions including wild Arachis species, the oil content could be as high as 65%. Heterosis has been observed for oil content in hybrids derived from diverse crossing parents. Segregates with enhanced oil content have been obtained by pyramiding different genes or alleles with major and minor additive effects. Improved testing techniques for oil content in breeding lines with reduced cost have accelerated breeding progress for high oil content. SSR markers associated with oil content have been identified by association and linkage analysis. The stability of oil content in peanut across seasons and locations is highly associated with cold tolerance, high nutrition efficiency and drought tolerance. Recent progress on improving fatty acids in particular marker assisted backcrossing breeding has contributed to higher quality peanut oil and other products. High oil peanut lines with im-proved resistance to aflatoxin production have been developed. The wild Arachis species would be of great value for peanut breeding in increasing oil content. 展开更多
关键词 s Arachis hypogaea L. wild Arachis species oil content oleic acid fatty acid compo-nents resistance to aflatoxin production HETEROsIs marker assisted breeding
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General Contents for CHINA'S REFRACTORIES (1992 - 2011)
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《China's Refractories》 CAS 2012年第1期55-71,共17页
关键词 sIALON General contents for CHINA’s REFRACTORIEs
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An Improved 6S Code for Atmospheric Correction Based on Water Vapor Content
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作者 Yin Zhang Xiaoqin Wang Yunzhi Chen 《Advances in Remote Sensing》 2012年第1期14-18,共5页
Water vapor content in the atmosphere is very significant for atmospheric correction of optical remote sensing data. Nowadays, the common atmospheric correction models use a single value of the average water vapor con... Water vapor content in the atmosphere is very significant for atmospheric correction of optical remote sensing data. Nowadays, the common atmospheric correction models use a single value of the average water vapor content of the study area to perform atmospheric correction. As the distribution of water vapor content varies greatly with time and space, it is obviously inaccurate to represent the total water vapor conditions of the whole area by just reading the average water vapor content. In this study, we altered the 6S sources so that it could read the water vapor content image which was retrieved from MODIS 1 km data. Atmospheric correction was implemented for the band 1 of MODIS 500 m data pixel-by-pixel using the improved 6S model. In comparison with the traditional 6S model, this improved 6S model is more reasonable in atmospheric correction, for it considers the spatial distribution of the water vapor content retrieved from MODIS data in the near infrared to define the atmospheric conditions for simulating the atmospheric radiative transfer. The results corrected by the improved 6S model showed more reasonable in pixel spatial distribution and closer histogram with the original image than those by traditional 6S model. 展开更多
关键词 ATMOsPHERIC CORRECTION 6s Model Water Vapor content MODIs
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General Contents for CHINA'S REFRACTORIES(Vol.21,2012)
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《China's Refractories》 CAS 2012年第4期54-54,共1页
关键词 General contents for CHINA’s REFRACTORIEs Vol.21
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General Contents for CHINA’S REFRACTORIES(Vol.28,2019)
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《China's Refractories》 CAS 2019年第4期53-54,共2页
关键词 General contents for CHINA’s REFRACTORIEs Vol.28 2019
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A Content Analysis of Multicultural Children's Books in the Republic of Korea and America
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作者 Patrick Mclver 《Journal of Literature and Art Studies》 2018年第1期67-80,共14页
Picture books are a staple in the kindergarten classroom for teaching content, social expectations, and the joy of reading. The purpose of this study is to explore the representation and depiction of multicultural fam... Picture books are a staple in the kindergarten classroom for teaching content, social expectations, and the joy of reading. The purpose of this study is to explore the representation and depiction of multicultural families in children's picture books within kindergarten classroom libraries. Children's pictures books are a microcosm of today's society. They convey cultural messages and values about society, and help children learn about their heritage and the heritage of others. Children's literature is increasingly more reflective of diverse cultures. Children need to see themselves reflected in literature in order to see the lives of others, and in order to see themselves as able to transverse between groups and worlds. America (U.S.) has been and will always be a diverse nation. Likewise, the Republic of Korea (ROK) is quickly becoming a multicultural society as well, and the influx of multicultural families is growing exponentially. Books depicting this growing diversity can dispose of stereotypes that children may have about races other than their own. Children's literature is still not authentically portraying a multiethnic Korea. The results of this study show that children who interact with current picture books predominantly see Korean faces. Finding books depicting non-Korean characters, particularly books depicting culturally specific elements, is rare, although there are books depicting culturally neutral and generic characters However, although our classrooms are culturally and ethnically diverse, the books predominantly found in classrooms portray only one race. What does that tell our students? Seeing diverse populations in children's literature needs to become the norm, not the exception. 展开更多
关键词 content analysis MULTICULTURAL children's picture books
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Vital Contents of China's Foreign Trade in 2008
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《China's Foreign Trade》 2008年第23期67-71,共5页
关键词 CO PR RE Vital contents of China’s Foreign Trade in 2008
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Influence of water content on the inactivation of P. digitatum spores using an air–water plasma jet
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作者 胡友谊 朱卫东 +3 位作者 刘坤 韩冷 郑振峰 胡慧敏 《Plasma Science and Technology》 SCIE EI CAS CSCD 2018年第4期71-77,共7页
In order to investigate whether an air–water plasma jet is beneficial to improve the efficiency of inactivation, a series of experiments were done using a ring-needle plasma jet. The water content in the working gas... In order to investigate whether an air–water plasma jet is beneficial to improve the efficiency of inactivation, a series of experiments were done using a ring-needle plasma jet. The water content in the working gas(air) was accurately measured based on the Karl Fischer method. The effects of water on the production of OH(A;Σ;–X;Π;) and O(3p;P–3s;S) were also studied by optical emission spectroscopy. The results show that the water content is in the range of 2.53–9.58 mg l;, depending on the gas/water mixture ratio. The production of OH(A;Σ;–X;Π;) rises with the increase of water content, whereas the O(3p;P–3s;S) shows a declining tendency with higher water content. The sterilization experiments indicate that this air–water plasma jet inactivates the P. digitatum spores very effectively and its efficiency rises with the increase of the water content. It is possible that OH(A;Σ;–X;Π;) is a more effective species in inactivation than O(3p;P–3s;S) and the water content benefit the spore germination inhibition through rising the OH(A;Σ;–X;Π;) production. The maximum of the inactivation efficacy is up to 93% when the applied voltage is -6.75 kV and the water content is 9.58 mg l;. 展开更多
关键词 air–water plasma jet water content inactivation efficiency P. digitatum spores OH(A2Σ%PLUs%–X2Πi) O(3p5P–3s5s)
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How “Made-in-China” Boosts U.S.Employment-An Empirical Analysis of “U.S.Content” in China’s Exports of Manufactured Goods
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作者 王孝松 周嘉辰 翟光宇 《China Economist》 2015年第1期32-42,共11页
This paper aims to examine the specific ways in which China's exports of manufactured goods to the United States boost the U.S. job market. Using the OECD STAN Bilateral Trade Database by Industry and End-use Categor... This paper aims to examine the specific ways in which China's exports of manufactured goods to the United States boost the U.S. job market. Using the OECD STAN Bilateral Trade Database by Industry and End-use Category to calculate the share of U.S. intermediate products used in the manufactured goods China exports to the U.S., this paper finds that the "U.S. content" in China's exports of manufactured goods to the U.S. increases with the technology content of the goods and shows a decreasing trend over time. From 2006 to 2010, the average "US. content" in China's exports of manufactured goods to the U.S. was 1%, and such content in China's exports of high-end manufactured goods was 1.6%. On this basis and using the employment-output ratio in the U.S. Employment Demand Matrix, this paper concludes that as many as 1.71 million jobs have been created by the U.S. intermediate products used in China's exports of manufactured goods to the U.S. during the same period. Thus, the development of Sino-U.S. trade has a positive impact on the job market in the U.S.. By contrast, instead of improving the employment situation in the U.S., the RMB appreciation proposed by the U.S. might even have a negative effect. 展开更多
关键词 made in China employment promotion U.s. content vertical specialization
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Vital Contents of China's Foreign Trade in 2007
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《China's Foreign Trade》 2007年第23期68-71,共4页
No.1-2 SPECLAL REPORT Sino-African Trade Cooperation China Should Attach Importance to GNP as well as GDP Foreign Trade in 2007,Stable and Rapid Development Forecasted Governor Punjab,Pakistan: Pakistan-China Friend-
关键词 CO Vital contents of China’s Foreign Trade in 2007 BANK sTAR
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Evaluation of Uncertainty in Measuring the Content of CaM V35S Promoter in Genetically Modified Soybean,GTS40-3-2,by Real-time Quantitative PCR
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作者 Dong WANG Jun SONG +5 位作者 Ling'an GUO Shaorong LEI Wenjuan LIU Lijuan CHANG Quan YIN Fuli ZHANG 《Agricultural Biotechnology》 CAS 2015年第1期23-26,30,共5页
[ Objective ] This study aimed to investigate the major contributors to the measurement uncertainty in quantitative analysis of genetically modified ingreclients and improve the quality of quantitative detection of ge... [ Objective ] This study aimed to investigate the major contributors to the measurement uncertainty in quantitative analysis of genetically modified ingreclients and improve the quality of quantitative detection of genetically modified components. [ Method] The content of CaMV35S promoter (parameter) in GTS40- 3-2 soybean powder samples was measured to estimate the measurement uncertainty preliminarily. [ Result] Type A uncertainty (uA) ' type B uncertainty (uB) and combined standard uncertainty (Uc) were 0.0 004, 0.002 and 0.002, respectively. At a confidence level ofp = 95% and freedom degree of Voff = 3 251, coverage factor k = 1.96, expanded uncertainty U = 0.004. The final measurement result was C = 0.028 ± 0. 004, which was dose to the conventional true value (0.03). Thus, the measurement uncertainty was relatively small, indicating a high quality of measurement. In this study, uncertainty evaluation indicated that the deviation of micro liquid transfer made the greatest contribution to the measurement uncertainty. [ Cludusion ] The deviation of micro liquid transfer should be reduced to im- prove the quality of measurement. 展开更多
关键词 Genetically modified soybean GTs40-3 -2) content of CaM-V35s promoter UNCERTAINTY EVALUATION
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Vital Contents of China's Foreign Trade in 2009
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《China's Foreign Trade》 2009年第24期64-70,共7页
关键词 TCH IRs EXPO Vital contents of China’s Foreign Trade in 2009 FIGURE INFO
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