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Spontaneous vesicle formation from DSB/AOT mixed system

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Chinese Science Bulletin 2003年第13期48卷 1338-1342页

作者： CHEN Wenjun ZHAI Limin LI Ganzuo MENG Xiangguang zeng xiancheng Key Lab for Colloid and Interface Chemistry of Ministry of Education Shandong UniversityJi'nan 250100China Depurtment of Chemistry Ji`nan University Ji'nan 250014.China Departiment of Chemistry Sichuan University Chengdu 610064China

Spontaneous vesicles from the aqueous mixtures of dodecyl sulfonate betaine (DSB) and sodium bis (2-ethylhexyl) sulfosuccinate (AOT) at certain mixing ratios have been demonstrated by using calorimetry, freeze-frac- ture transmission electronic microscopy (TEM), negative- staining TEM and dynamic light scattering (DLS) methods. The addition of NaCl will promote vesicle formation and the heat effect of monodisperse vesicle system is greatest. Meanwhile the mechanism was analyzed from the viewpoint of packing parameter f, molecular geometry structure and interaction.

关键词： DSB/AOT 透射电子显微镜十二烷基磺酸内铵盐磺基丁二酸酯

Intelligent Diagnosis Method for Typical Co-frequency Vibration Faults of Rotating Machinery Based on SAE and Ensembled ResNet-SVM

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Chinese Journal of Mechanical Engineering 2024年第4期37卷 215-230页

作者： xiancheng Zhang Xin Pan Hao zeng Haofu Zhou Beijing Key Laboratoryof Health Monitoring and Self-recovery for High-end Mechanical Equipment Beijing University of Chemical TechnologyBeijing 100029China Engineering Research Center of Chemical Safety(Ministry of Education) Beijing University of Chemical TechnologyBeijing 100029China Engineering Management Department of China Three Gorges New Energy(Group)Co. Ltd.Beijing 101199China

Intelligent fault diagnosis is an important method in rotating machinery fault diagnosis and equipment health *** deal with co-frequency vibration faults,a type of typical fault in rotating machinery,this paper proposes a fault diagnosis method based on the stacked autoencoder(SAE)and ensembled ***,the time-and frequency-domain features of several co-frequency vibration faults are summarized based on the mechanism analysis and calculated using actual vibration *** realize and validate the high-precision diagnosis method of rotating equipment with co-frequency faults proposed in this study,the following three criteria are required:First,to improve the effectiveness and robustness of the ensembled model and the sliding window using data augmentation,adding noise,autoencoder(AE)and SAE methods are analyzed in terms of principle and practical ***,ResNet is used as the feature extractor for the ensembled ResNet-SVM *** extraction is carried out twice,and the extracted co-frequency fault features are more ***,the data augmentation method and ensemble ResNet-SVM are combined for fault diagnosis and compared with other *** experimental results show that the accuracy of the proposed method can exceed 99.9%.

关键词： Co-frequency vribation Data argumentation Ensembeled ResNet-SVM High precision fault diagnosis

中国田——让“大美腐植酸”阔步走在幸福田园建设的金光大道上

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腐植酸 2024年第4期 M0002-M0002页

作者：曾宪成不详

关键词：

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开创“双碳农业”新局面

腐植酸 2024年第1期 I0001-I0001页

作者：曾宪成不详

2023年,“腐植酸直面双碳农业”作为“第8届全国土肥和谐大会”主题,赢得了社会各方的高度认同,新华网、中国农网、中国科学报、中国化工报、中华合作时报等国家权威媒体广为传播。“双碳农业”得到土肥界青睐,已成为社会关注的“热词... 详细信息

2023年,“腐植酸直面双碳农业”作为“第8届全国土肥和谐大会”主题,赢得了社会各方的高度认同,新华网、中国农网、中国科学报、中国化工报、中华合作时报等国家权威媒体广为传播。“双碳农业”得到土肥界青睐,已成为社会关注的“热词”。腐植酸是土壤的储碳库,联土联肥联生态,是直面“双碳农业”的新质生产力。2021年3月9日,联合国粮农组织发布研究成果,世界粮食体系温室气体排放量占全球人为排放量的1/3以上。粮食的生产阶段(包括肥料投入)是整个粮食体系排放的主要贡献者,占其排放总量的39%。毋庸置疑,实现“双碳”目标,农业减排重任在肩。

关键词：联合国粮农组织中国科学报新华网温室气体排放量腐植酸中国化工报中华合作时报农业减排

Identification and Characterization of a Distinct Strain of Beak and Feather Disease Virus in Southeast China

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Virologica Sinica 2020年第1期35卷 43-51页

作者： Yanmei Ma Xiaoyong Chen Keyuan Chen xiancheng zeng Shili Yang Wei Chang Yao Tang Xiaoli Chen Song Wang Ji-Long Chen Fujian Agriculture and Forestry University Fuzhou 350002China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of Sciences(CAS)Beijing 100101China Fuzhou Zoo Fuzhou 350012China

Beak and feather disease virus(BFDV) is an infectious agent responsible for feather degeneration and beak deformation in birds. In March 2017, an epidemic of psittacine beak and feather disease(PBFD) struck a farm in Fuzhou in the Fujian Province of southeast China, resulting in the death of 51 parrots. In this study, the disease was diagnosed and the pathogen was identified by PCR and whole genome sequencing. A distinct BFDV strain was identified and named as the FZ *** BFDV strain caused severe disease symptoms and pathological changes characteristic of typical PBFD in parrots, for example, loss of feathers and deformities of the beak and claws, and severe pathological changes in multiple organs of the infected birds. Phylogenetic analysis showed that the FZ strain was more closely related to the strain circulating in New Caledonia than the strains previously reported in China. Nucleotide homology between the FZ strain and other 43 strains of BFDV ranged from 80.0% to 92.0%. Blind passage experiment showed that this strain had limited replication capability in SPF Chicken Embryos and DF-1 Cells. Furthermore, the capsid(Cap) gene of this FZ strain was cloned into the p GEX-4 T-1 expression vector to prepare the polyclonal anti-Cap antibody. Western blotting analysis using the anti-Cap antibody further confirmed that the diseased parrots were infected with BFDV. In this study, a PBFD and its pathogen was identified for the first time in Fujian Province of China, suggesting that future surveillance of BFDV should be performed.

关键词： Beak and feather disease virus(BFDV) Parrot FZ strain Capsid protein(Cap) Phylogenetic analysis

Effects of Transportation on Antioxidant Status in Cynomolgus Monkeys(Macaca fascicularis)

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Effects of Transportation on Antioxidant Status in Cynomolgu...

腐殖(植)酸与食品源头安全——腐殖(植)酸是构筑食品源头安全的最佳选择

第十三届中国实验动物科学年会

作者： Xueying Pan Liang Lu xiancheng zeng Yan Chang Xiuguo Hua Shanghai Key Laboratory of Veterinary Biotechnology School of Agriculture and BiologyShanghai Jiaotong University National Shanghai Center for New Drug Safety Evaluation&Research(NCDSER)

To evaluate the effects of transportation on oxidative stress in cynomolgus monkeys, the levels of serum reduced glutathione(GSH), malondialdehyde(MDA), and protein carbonyl(PC), and the activities of total antioxidant capacity(T-AOC), superoxide dismutase(SOD), glutathione peroxidase(GSH-Px), and catalase(CAT) in cynomolgus monkeys were examined at the pre-transportation(Day 0), on the day of arrival(Day 1), and on Days 7, 14, and 21 post-transportation. Compared with that on Day 0, T-AOC activity on Days 1, 7, and 14 post-transportation showed a significant decrease(P<0.001) and reached its lowest level on Day 7, and increased thereafter to reach its pre-transportation level by Day 21 post-transportation. CAT activity on Day 1(P<0.001), Day 7(P<0.001), and Day 14(P<0.01) after post-transportation also decreased, reached its lowest level on Day 7 post-transportation, and increased thereafter to reach its pre-transportation level by Day 21 post-transportation. A significant decrease was also noted in the mean SOD activity(P<0.001) and GSH level(P<0.05) on Day 1;they thereafter increased to reach their pre-transportation activity/level by Day 7 post-transportation. In contrast, the levels of PC(P<0.001) and MDA(P<0.01) and the activity of GSH-Px(P<0.001) showed a significant increase on Day 1 as compare to those on Day 0, and thereafter decreased to reach their pre-transportation levels/activity by Day 14 post-transporation. Decreases in the GSH, T-AOC, CAT, and SOD levels/activities and increases in the MDA, PC and GSH-Px levels/activities were observed in cynomolgus monkeys after transportation. These results suggested that transportation could result in imbalance of oxidant and antioxidant and excess oxidative stress in cynomolgus monkeys. Cynomolgus monkeys after transportation should have at least 21 days’ recovery to regain their healthy status.

关键词： cynomolgus monkeys transportation oxidative parameters,stress

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腐植酸 2005年第4期 1-10页

作者：曾宪成中国腐植酸工业协会北京100011

腐殖(植)酸(HumicAcid,以下简称HA)是天然有机化合物。在农业应用上十分广泛,主要有土壤改良剂、肥料、农药、植物生长剂、兽药、饲料添加剂、水产养殖剂等产品。从狭义的角度说,食品生产源头指土、水、肥、药、种等主要生产环节的硬条... 详细信息

腐殖(植)酸(HumicAcid,以下简称HA)是天然有机化合物。在农业应用上十分广泛,主要有土壤改良剂、肥料、农药、植物生长剂、兽药、饲料添加剂、水产养殖剂等产品。从狭义的角度说,食品生产源头指土、水、肥、药、种等主要生产环节的硬条件。HA与食品生产源头诸要素之间关系密切。HA与土壤:土壤是种植业依赖的生命基础;HA是土壤有机质中的重要组成部分,也是最活跃的部分。HA与水:水是生命之源;HA在水生体系中普遍存在,是转运大多数生命必需物质甚至毒性物质的一种非常好的工具。HA与肥料:肥料是植物的粮食;HA在改良肥料、增加肥效、提高肥料利用率、协调各种营养等方面具有非常重要的作用。HA与农药:农药是植物的保护伞;HA具有提高农药药效、降低农药毒性、保护农业环境的基本条件。HA与种苗:种苗不好,作物不保;HA是孵化种苗的“保育剂”。除土、水、肥、药、种外,HA因其具有生理活性特征,而与种植业相关的诸多因素均有良好的协同作用。在此基础上,由HA开发的农用产品,涉足改土、活水、制肥、制药、种苗处理及其他衍生制剂等6大类产品,足以构筑起立体农业的防护体系,也是构筑食品源头安全的最佳选择。

关键词：腐殖(植)酸食品安全生产源头防护体系最佳选择食品生产源头安全肥料利用率土壤改良剂

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中国腐植酸绿色低碳产业前景光明(节录)

腐植酸 2010年第6期 12-20,11页

作者：曾宪成中国腐植酸工业协会

全球低碳化已成发展趋势。低碳,既是经济,又是政治,而低碳生活已涉足社会各方面。腐植酸既是实体经济,又是环境友好型产业,完全符合国家倡导绿色环保新产业的要求。腐植酸绿色低碳产业的核心力构架,应该从原料、科研、产品、标准、检测... 详细信息

全球低碳化已成发展趋势。低碳,既是经济,又是政治,而低碳生活已涉足社会各方面。腐植酸既是实体经济,又是环境友好型产业,完全符合国家倡导绿色环保新产业的要求。腐植酸绿色低碳产业的核心力构架,应该从原料、科研、产品、标准、检测方法、计算方法、品牌等诸多方面塑造。通过产、学、研、示、推等组合拳,融合各方力量,加快腐植酸新产业(品)走向大市场,实现专业化、规模化、集约化、国际化、智能化,方可铸就腐植酸大业。世界潮流浩浩荡荡,低碳经济不可阻挡。在全球低碳经济新浪潮的推动下,腐植酸绿色低碳产业应抓住历史机遇,借助天时、地利、人和之势,集合各种资源,全方位出击,打造精品,抢占市场,做大做强,为维护地球和人类可持续发展做出新的贡献。中国腐植酸绿色低碳产业的发展前景光明。

关键词：腐植酸绿色环保低碳产业集成示范核心力融合力行动力前景光明

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用科学发展观正确认识腐植酸类环保农药

腐植酸 2007年第4期 1-5,38页

作者：曾宪成中国腐植酸工业协会北京100011

用科学发展观正确认识腐植酸类环保农药。腐植酸作为农作物生长调控的天然有机物质,环保、经济、安全,与农药结合的空间很大。腐植酸作为植物生长调节剂已属农药之列;腐植酸因其具有的生物活性,可与各类农药结合研制具有环保特色的新型... 详细信息

用科学发展观正确认识腐植酸类环保农药。腐植酸作为农作物生长调控的天然有机物质,环保、经济、安全,与农药结合的空间很大。腐植酸作为植物生长调节剂已属农药之列;腐植酸因其具有的生物活性,可与各类农药结合研制具有环保特色的新型农药;腐植酸作农药助剂、填充剂,将赋予农药新的活力;腐植酸类环保农药具有与农业可持续发展相适应的优越性。

关键词：腐植酸环保农药