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Optimization of process for the production of bio-oil from eucalyptus wood

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燃料化学学报 2010年第2期38卷 162-167页

作者： Gaurav KUMAR Achyut K PANDA R K SINGH National Institute of Technology Rourkela Orissa PIN： 769008 India Jagannath Institute for Technology and Management Parlakhemundi Orissa India

The pyrolysis of eucalyptus wood was carried out in a batch reactor to optimize the yield of *** of various parameters like feed(particle) size,temperature,presence of catalyst and heating rate on the yield of bio-oil was *** optimum conditions for high yield of bio-oil are for the particle size 2 mm^5 mm(average l/d=12.84/2.03 mm) at 450 ℃ in high heating *** reaction kinetics and the quality of bio-oil produced are independent of the presence of different catalysts like mordenite,kaoline clay,fly ash and silica *** physical properties like odour,colour,PH,viscosity,heating value were *** FT-IR analysis of bio-oil indicates the presence of different functional groups such as monomeric alcohol,phenol,ketones,aldehydes,carboxylic acid,amines,and nitro *** composition of the bio-oil at different conditions was analyzed using GC-MS and found that the components are temperature dependent but independent of catalysts used.

关键词：热反应晶体结构生物能源

Electrical property of 8-mol% yttria-stabilized zirconia electrolyte by spark-plasma sintering

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Science China(Technological Sciences) 2004年第5期47卷 569-576页

作者： JIAN Jiawen1,2, CHANG Aimin3, YANG Bangchao2 & ZHANG Yikang4 1. The School of Information Science Engineering, Ningbo University, Ningbo 315211, China 2. The School of Microelectronics and Solid-state Electronics, University of Electronic Science and Tech-nology of China, Chengdu 610054, China 3. The Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830022, China 4. Hongtak (Chengdu) Electronic Co., Ltd, Chengdu 610041, China Correspondence should be addressed to Jian Jiawen 1. The School of Information Science Engineering Ningbo University 315211 Ningbo China 2. The School of Microelectronics and Solid-state Electronics University of Electronic Science and Technology of China 610054 Chengdu China 3. The Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences 830022 Urumqi China 4. Hongtak (Chengdu) Electronic Co. Ltd 610041 Chengdu China

Spark-plasma sintering (SPS) process was used to sinter ZrO2 (8Y) powders, and a relative density of 99% has been reached at a low temperature (1350°C) and short dwelling time (10 min) compared to the conventional sintered identical samples (1450°C 4 h)(CS). By the X-ray diffraction (XRD) patterns, the microstructure of the SPS pellet and CS pellet are both indexed by the cubic unit cell (Fm3m). The finer crystallite size (D111) of the SPS pellet is 154 nm and D111 of the CS pellet is more than 1 μm. The AC impedance spectroscopy shows that the ionic conductivity of SPS pellet is different from that of CS pellet. The activation energy for the SPS ceramics, estimated from the slope in the range of 400–800°C, was 91 kJ mol?1, which is in good agreement with CS pellet (96 kJ mol?1), indicating that the conduction mechanism in SPS ceramics is similar to that in CS ceramics.

关键词： yttria-stabilized zirconia electrolyte, spark-plasma sintering, AC impedance.

Suppression subtractive hybridization analysis of gene expression during late kidney development identifies the developmentally regulated gene rPEA3

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Suppression subtractive hybridization analysis of gene expre...

Genetic polymorphisms of milk epithelial mucin of yaks

中华医学会第五次全国儿科中青年学术交流大会

作者： Songming Huang~(1,2.aihua Zhang~(1,2)Qiuxia Chen~(1,2)Songzhou Xu~(1,2)Quanchen Feng~(1,2)Xirong Guo~2 Mei Guo~2 Ronghua Chen~2 1 Department of Nephrology,Affiliated Nanjing Children’s Hospital,Nanjing Medical University,Nanjing,China 2 Institute of Pediatrics,Nanjing Medical University,Nanjing,China

Background To gain insight into the later stages of nephrogenesis,we detected the alterations in gene expression in rat kidney at two postnatal stages,P0(0 day after birth),the time at which nephrogensis is still active,and P21(21 days after birth), when nephrogenesis is *** Sprague Dawley rats were *** were dissected from embryos at E15,E17, and E19,and from postnatal days P0,P7,P21,and adult *** subtractive hybridization(SSH)analysis was performed and highly expressed genes were evaluated as molecular markers by real-time reverse transcripfion-polymerase chain reaction (RT-PCR),in situ hybridization,and Western *** Several differentially expressed genes were identified,including rPEA3,a member of the PEA3 subfamily of Ets domain transcription *** time RT-PCR analysis revealed that rPEA3 exhibited dynamic developmental regulation,with high levels of expression from embryonic day E15 until birth,and declining levels *** in sitn hybridization,rPEA3 mRNA was detected in the ureteric bud(UB)and surrounding metanephric mesenchyme of the kidneys from E15 until birth,but was undetectable in mature *** These studies provide compelling evidence that the newly identified gene rPEA3 may play an important role in kidney development and differentiation.

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Progress in Natural Science:Materials International 2006年第11期16卷 1222-1226页

作者： ZHENG Yucai~1, ZHAO Xingbo~2**, JIN Suyu~1, PENG Xianwen~1 and BAI Wenlin~1 (1. College of Life Science and Technology, Southwest University for Nationalities, Chengdu 610041, China 2. State Key Laboratory for Agrobiotechnology and Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, China Agricultural University, Beijing 100094, China) [a]College of Life Science and Technology Southwest University for Nationalities Chengdu China [b]State Key Laboratory for Agrobiotechnology and Ministry of Agriculture Key Laboratory of Animal Genetics Breeding and Reproduction China Agricultural University Beijing China

Milk epithelial mucin (MUC1) of yaks was separated by SDS-polyacrylamide gel electrophoresis. A total of nine types of MUC1 were revealed in 427 yaks from five yak breeds including Maiwa yak, Jiulong yak, Tianzhu white yak, Qinghai yak and Tibetan yak. The molecular weights of MUC1 are from 163 kD to 208 kD, most of which are larger than those of bovine. Population genetic analysis shows that the gene frequency and genotype frequency of yak MUC1 differ among breeds, with relatively high gene heterozygosity. The five yak breeds studied fall into two groups according to their milk MUC1 gene frequency, suggesting that milk MUC1 exhibits specificities for local yak groups.

关键词： yak milk genetic polymorphism MUC1.

Pharmacokinetic Study on Hyperoside in Beagle’s Dogs

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Chinese Herbal Medicines 2012年第3期4卷 213-217页

作者： AI Guo 1, 2 , HUANG Zheng-ming 2 , LIU Chang-xiao 3 1. Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing 100850, China 2. Department of Pharmacy, 302 Hospital of PLA, Beijing 100039, China 3. Tianjin Institute of Pharmaceutical Research, Tianjin 300193, China [a] Institute of Radiation Medicine Academy of Military Medical Sciences Beijing 100850 China [b] Department of Pharmacy 302 Hospital of PLA Beijing 100039 China [c] Tianjin Institute of Pharmaceutical Research Tianjin 300193 China

Objective To develop and validate a simple, rapid, sensitive, and reproducible HPLC method for determination of hyperoside in plasma of dogs and for the subsequent pharmacokinetic (PK) study. Methods An accurate and reproducible HPLC-UV method was developed and validated for the determination of hyperoside in plasma of dogs, using kaempferol as internal standard. The plasma samples of dogs following ig administration of hyperoside were analyzed for the detection of quercetin after enzymatic hydrolysis treatment with combined β-glucuronidase and sulphatase. The analytes were separated on a Diamonsil C 18 column (250 mm × 4.6 mm, 5 μm). The mobile phase consisted of methanol-buffer solution (0.1 mol/L NH 4 Ac + 0.3 mmol/L EDTA-Na 2 )-acetic acid (60:40:1) and was delivered at a flow rate of 1 mL/min. The UV detector was set at 370 nm and the column temperature was maintained at 35 ℃. The sample injection volume was 20 μL. Data were collected and analyzed using the ANASTAR software. PK parameters were calculated with DAS software (2.0). Results Linear relationships were validated over the range of 0.01-1 μg/mL for hyperoside (r = 0.9997). The intra- and inter-day precision values for all samples were within 10.0%, and the accuracies of intra- and inter-day assays were within the range of 92.4%-102.4%. The validated method was successfully used to determine the hyperoside concentration in plasma of dogs for up to 12 h, after a single ig administration (25 mg/kg). The mean PK parameters for male and female dogs were as follows: C max (0.18 ± 0.05) and (0.16 ± 0.05) μg/mL, AUC 0-∞ (0.79 ± 0.34) and (0.86 ± 0.27) μg/(mL·h), t 1/2(ka) (0.89 ± 0.41) and (0.88 ± 0.28) h, respectively. Statistical analysis on the PK of hyperoside in male and female groups showed that sex had no significant impact on the PK of hyperoside (P > 0.05). Conclusion The method is able and sufficient to be used in drug PK studies of hyperoside.

关键词： Beagle’s dogs HPLC hyperoside kaempferol pharmacokinetics

化学发光物质9-[2′，6′-二甲基-4′-(琥珀酰亚胺氧羰基)苯氧羰基]-10-甲基吖啶-单甲基-磺酸盐的合成

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化学学报 2008年第2期66卷 223-228页

作者：尹东光贺佑丰刘一兵沈德存韩世泉罗志福焦正吴明红上海大学环境与化学工程学院上海200444 中国原子能科学研究院同位素研究所北京102413

报道了一种化学发光物质吖啶酯衍生物9-[2′，6′-二甲基-4′-（琥珀酰亚胺氧羰基）苯氧羰基]-10-甲基吖啶-单甲基-磺酸盐（DMAE·NHS）的合成，合成共经历7个步骤，每步合成的产物经IR，^1H NMR，MS和元素分析表征，结果表明合成产物... 详细信息

报道了一种化学发光物质吖啶酯衍生物9-[2′，6′-二甲基-4′-（琥珀酰亚胺氧羰基）苯氧羰基]-10-甲基吖啶-单甲基-磺酸盐（DMAE·NHS）的合成，合成共经历7个步骤，每步合成的产物经IR，^1H NMR，MS和元素分析表征，结果表明合成产物为所期望的化合物，该合成产物显示为一种非常理想的化学发光物质。

关键词：吖啶酯 9-[2′,6′-二甲基-4′-(琥珀酰亚胺氧羰基)苯氧羰基]-10-甲基吖啶-单甲基-磺酸盐(DMAE·NHS) 化学发光合成

Hydrogen production from pulp and paper mill wastewater by supercritical water gasification with Ni/ZrO2 catalyst

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Hydrogen production from pulp and paper mill wastewater by s...

第九届全国氢能学术会议

作者： B.Yan~(1,2),J.Z.Wu~2,F.M.He~2,C.H.Wei~2 ~1 Guangzhou Institute of Geochemistry,China ~2 South China University of Technology,China

The hydrogen production from pulp and paper mill wastewater by supercritical water gasification(SCWG) was studied in a continuous flow reactor with Ni/ZrO catalyst at 723 and 773 K,24 MPa,residence time of *** effect ...

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一种电力电子变压器的控制策略研究

电机与控制学报 2018年第7期22卷 78-84页

作者：武琳王兰香李赫王红仁南瑞集团(国网电力科学研究院)有限公司江苏南京211000 北京科东电力控制系统有限责任公司北京100092 国网辽宁电力公司大连培训中心辽宁大连116023

对一种基于双向DC-DC变换器的电力电子变压器进行了深入分析,针对现有电力电子变压器整流侧所采用基于D-Q变换均压控制算法复杂的问题,提出一种基于电压排序的直流电容电压平衡控制算法,无需单相D-Q变换,简化了控制结构,提高了均压控制... 详细信息

对一种基于双向DC-DC变换器的电力电子变压器进行了深入分析,针对现有电力电子变压器整流侧所采用基于D-Q变换均压控制算法复杂的问题,提出一种基于电压排序的直流电容电压平衡控制算法,无需单相D-Q变换,简化了控制结构,提高了均压控制效果。针对现有电力电子变压器多DC-DC单元并联的功率均衡控制所需要信号采样多的问题,提出一种不需要电流采样DC-DC单元并联均功率控制策略,减小了采集信号数量。仿真和实验结果验证了文中所提出控制策略有效性。

关键词：电力电子变压器双向全桥DC-DC变换器均压控制均功率控制全球能源互联网

Hybrid Modified Rubber Powder and Its Application in Cement Mortar

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Journal of Wuhan University of Technology(Materials Science) 2010年第6期25卷 1033-1037页

作者：于利刚刘岚 Department of Materials Science and Engineering South China University of Technology Guangdong Building Materials Institute

This research focused on using the waste rubber powder as a kind of regenerate resources to improve the mechanical properties of cement *** two kinds of hybrid modified rubber powder TRP and ATRP were prepared by sol-gel method and then used in cement *** structures and properties of them were *** is shown that the nano Si-O-Si network is generated in TRP and ATRP networks and the hydrophilic group is grafted on the surface of *** mechanical properties of rubber-treated mortar（RTM） were tested and the microstructures of them were also *** to the mortars with unmodified rubber powders（RP）,NaOH treated rubber powder（SRP） and coupling agent treated rubber powder（CRP）,the RTM with ATRP has the highest compressive strength and flexural *** stress-strain curves shown that the peak of stress of RTM with ATRP is increased and indicated the higher compression deformation and *** is found that the interfacial adhesion between the ATRP and cement mortar is increased distinctly by SEM,which results in enhanced ductility and mechanical properties of RTM with ATRP.

关键词： rubber powder cement mortar hybrid modified mechanical properties interface adhesion