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CO_(2)化学酶转化的突破:实现立体化学完全可控的可持续人工合成己糖

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Science Bulletin 2023年第20期68卷 2291-2292页

作者： Manfred t.Reetz tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China Biocatalysis Section Max-Planck-Institut fur KohlenforschungMulheim an der Ruhr 45470Germany

the capture and transformation of the greenhouse gas CO_(2) into high-value products is currently of paramount importance worldwide,with many different approaches being conceived and tested[1-6].the transformation CO_(2) into carbohydrates is a particularly intriguing idea,but putting it into reality is challenging due to the necessary complete control in the creation of stereo-centers and ensuring sufficient *** far,the results are not overly convincing[7].the inspiration for solving this fundamental problem is manifold,inter alia,because carbohydrates(sugars)contribute significantly to energy storage and provide carriers for human living,especially important biologically active *** also constitute the main resource for industrial biomanufacturing.

关键词：立体化学 manifold sugar

Effect of temperature on the mechanical abnormity of the quasicrystal reinforced Mg-4%Li-6%Zn-1.2%Y alloy

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Journal of Magnesium and Alloys 2015年第2期3卷 106-111页

作者： C.Q.Li D.K.Xu t.t.Zu E.H.Han L.Wang Environmental Corrosion Center Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials and Metallurgy Northeastern UniversityShenyang 110819China

the serrated phenomena of the quasicrystalline phase reinforced Mg-4%Li-6%Zn-1.2%Y alloy after the extrusion,solid solution treatment and aged treatment have been investigated at different *** result shows that when the temperature is above 100℃,the serrated phenomenon becomes weak and all the serrated amplitudes are lower than 1 *** them,the serrated amplitude of samples in aged condition is the lowest and the value is only 0.1-0.2 *** underneath mechanism for the lower plastic instability at higher temperature(≥100℃)can be ascribed to the weak pining effect of solute atoms on the movement of dislocation and release of the pile-up dislocations.

关键词： Mg-Li PLC Quasicrystal High temperature deformation Mechanical property

Morphological Variation of Donax spp. from Five Beaches in Prachaupkhirikhan, thailand

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Journal of Agricultural Science and technology(A) 2011年第8期1卷 1109-1111页

作者： S. Manatrinon O. u. thonglor A. Boonyapakdee Faculty of Animal Sciences and Agricultural technology Silpakorn University Cha-Am Phetchaburi 76120 Thailand

Five hundred samples ofDonax spp. were collected from five beaches （Khao tao, Sea Pine Garden, Pran Buri Forest Park, Sam Roi Yod, and Sam Phraya） in Prachaupkhirikhan province, thailand. Five morphological variables of each individual were measured and analyzed to reveal morphological variation. the discriminant function analysis of morphology suggested a clear separation into two groups. the individuals from Khao tao and Sea Pine Garden were grouped together while individuals from Pran Buri Forest Park, Sam Roi Yod and Sam Phraya were classified into the same group. the classification function of discriminant function analysis suggested that 70% of Khao tao population, 70% of Sea Pine Garden population, 67% of Pran Buri Forest Park population, 64% of Sam Roi Yod population and 34% of Sam Phraya population of Donax spp. could be correctly reassigned by morphology. the misclassification individuals of Sam Phraya population were assigned to Pran Buri Forest Park and Sam Roi Yod population with the correct assignment 38% and 27%, respectively. the results obtained in this study based on morphological variation indicated that Khao tao and Sea Pine Garden populations ofDonax spp. should be treated as separated units from the other three populations for conservation management. However, the result should be confirmed again as genetic level.

关键词： Morphological variation discriminant function analysis Donax spp. Prachaupkhirikhan

Peripheral blood lymphocytes DNA in patients with chronic liver diseases

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World Journal of Gastroenterology 2001年第2期7卷 235-237页

作者： Vasiliy I Reshetnyak tatyana I Sharafanova Ludmila u Ilchenko Elena V Golovanova Gennadiy G Poroshenko Central Research Institute of Gastroenterology MoscowRussia

BACKGROuND: Viral replication in blood cells with nucleases may lead to the damage of lymphocytes genetic apparatus and the beginning of immunopathological reactions. AIM: Of this investigation is to reveal the damage to peripheral blood lymphocytes (PBL) DNA in the patients with chronic liver diseases. MAtERIALS AND MEtHODS: Sixteen-nine patients with chronic liver diseases (37 patients with chronic viral hepatitis, 2 patients with liver cirrhosis of mixed etiology (alcohol+virus G), 30 women with primary biliary cirrhosis-PBC) were examined. the condition of DNA structure of PBL was measured by the fluorescence analysis of DNA unwinding (FADu) technique with modification. Changes of fluorescence (in %) reflected the DNA distractions degree (the presence of DNA single-stranded breaks and alkalinelabile sights). RESuLtS AND CONCLuSION: the quantity of DNA single-stranded breaks and alkalinelabile sights in DNA in all patients with chronic viral hepatitis didn't differ from the control group, excluding the patients with chronic hepatitis (CH) C+G. Patients with HGV and ttV monoinfection had demonstrated the increase of the DNA single-stranded breaks PBL quantity. this fact may be connected with hypothesis about the viruses replication in white blood cells discussed in the literature. tendency to increase quantity of DNA PBL damages in the patients with primary biliary cirrhosis (PBC) accordingly to the alkaline phosphatase activity increase was revealed. Significant decrease of the DNA single-stranded breaks and alkalinelabile sights in the PBC patients that were treated with prednisone was demonstrated. Probably, the tendency to increase the quantity of DNA single stranded breaks and alkalinelabile sights in lymphocytes of the PBC patients was depended on the surplus of the blood bile acid content.

关键词： DNA Damage Adolescent Adult Aged Alkaline Phosphatase Chronic Disease Female Hepatitis, Chronic Hepatitis, Viral, Human Humans Leukocytes, Mononuclear Liver Cirrhosis Liver Cirrhosis, Biliary Liver Diseases Male Middle Aged Research Support, Non-u.S. Gov't

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基于场景感知的动态信息分发系统

北京理工大学学报 2008年第5期28卷 464-466页

作者：李海强吕廷杰北京邮电大学经济管理学院北京100876

为了提高移动用户对移动业务的体验度和满意度,设计了基于场景感知的动态信息分发系统,对移动网络层和移动终端进行了相应的设计,并对移动业务产业链和移动序列接入模式进行了分析,根据移动用户使用业务的时间、位置和喜好,挖掘出相应... 详细信息

为了提高移动用户对移动业务的体验度和满意度,设计了基于场景感知的动态信息分发系统,对移动网络层和移动终端进行了相应的设计,并对移动业务产业链和移动序列接入模式进行了分析,根据移动用户使用业务的时间、位置和喜好,挖掘出相应的频繁序列移动接入模式.研究结果表明,该系统可以根据频繁序列移动接入模式进行分发相应的信息给移动用户,进一步提高了用户对移动业务的满意度.

关键词：场景感知动态信息分发移动接入模式数据挖掘

Micronucleus analysis in patients with colorectal adenocarcinoma and colorectal polyps

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World Journal of Gastroenterology 2008年第44期14卷 6835-6839页

作者： Ali Karaman Dogan Nas■r Binici Mehmet E■ref Kabalar Züleyha ■al■ku■u Department of Medical Genetics Erzurum Training and Research HospitalErzurum 25240Turkey Department of Internal Medicine Erzurum Training and Research HospitalErzurum 25240Turkey Department of Pathology Erzurum Training and Research HospitalErzurum 25240Turkey Department of Medical Oncology Erzurum Training and Research HospitalErzurum 25240Turkey

AIM:to determine,by counting micronucleus (MN) frequencies,whether chromosomal or DNA damage have an effect on the pathogenesis of early colorectal adenocarcinoma (CRC). MEtHODS:We analyzed MN frequencies in 21 patients with CRC,24 patients with colon polyps [10 neoplastic polyps (NP) and 14 non-neoplastic polyps (NNP)] and 20 normal controls. RESuLtS:MN frequency was significantly increased in CRC patients and in NP patients compared with controls (3.72 ± 1.34,3.58 ± 1.21 vs 1.97 ± 0.81,P there was no difference in the MN frequency between CRC patients and NP patients (P > 0.05). Similarly,there was no difference in the MN frequency between NNP patients (2.06 ± 0.85) and controls (P > 0.05). CONCLuSION:Our results suggest increased chromosome/DNA instabilities may be associated with the pathogenesis of early CRC.

关键词： Colorectal adenocarcinoma Colon polyp Micronucleus Genetic instability

Formation of Re-containing Carbides in a Second Generation Directionally Solidified Ni Base Superalloy

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Journal of Materials Science & technology 2009年第3期25卷 361-364页

作者： t. Zhao D. Wang J. Zhang G. Chen L.H. Lou School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

the precipitates at grain boundary in a directionally solidified Ni base superalloy after heat treatment, aging at 975℃, and creep rupture test have been characterized. Besides the primary MC carbides and fine particles of u phase, the Re-containing M23C6 was observed. the precipitation kinetics revealed that the formation of M23C6 was associated with the dissolution of u phase and MC carbides. tEM image shows that the continuous precipitation of M23C6 particles effectively hinders the dislocation movement and strengthens the grain boundaries. the high strength of the alloy suggests that M23C6 carbides are beneficial to the properties although Re as an important matrix strengthening element was consumed.

关键词： Ni-base Superalloys Directional solidification Rhenium Carbide

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甘氨酸在电沉积铁铬合金中的作用

福建师范大学学报（自然科学版） 2007年第5期23卷 68-70,79页

作者：吕玮福建师范大学化学与材料学院福建福州350007

研究不同浓度甘氨酸对电沉积铁铬合金过程的影响,分析了甘氨酸在电沉积过程中的作用.加入甘氨酸后,可得到优良的镀层,而不含甘氨酸时,镀层中夹杂铬的化合物,造成镀层质量低劣.甘氨酸浓度为0.4-0.8 mol·L^-1时,镀层中铬含量较稳定.甘氨... 详细信息

研究不同浓度甘氨酸对电沉积铁铬合金过程的影响,分析了甘氨酸在电沉积过程中的作用.加入甘氨酸后,可得到优良的镀层,而不含甘氨酸时,镀层中夹杂铬的化合物,造成镀层质量低劣.甘氨酸浓度为0.4-0.8 mol·L^-1时,镀层中铬含量较稳定.甘氨酸的加入使得阴极极化增加,电位负移.在此镀液中,甘氨酸与Fe（Ⅱ）络合,使其析出电位负移,达到铁铬共沉积的目的.

关键词：三价铬铁铬合金甘氨酸

Effect of NOx and SO2 on the photooxidation of methylglyoxal:Implications in secondary aerosol formation

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Journal of Environmental Sciences 2020年第6期32卷 151-162页

作者： Shuyan Wang Lin Du Narcisse t.tsona Xiaotong Jiang Bo You Li Xu Zhaomin Yang Wenxing Wang Environment Research Institute Shandong UniversityBinhai Road 72Qingdao266237China School of Life Science Shandong UniversityBinhai Road 72Qingdao266237China

Methylglyoxal(CH3COCHO,MG),which is one of the most abundant α-dicarbonyl compounds in the atmosphere,has been reported as a major source of secondary organic aerosol(SOA).In this work,the reaction of MG with hydroxyl radicals was studied in a 500 L smog chamber at(293±3)K,atmospheric pressure,(18±2)%relative humidity,and under different NOx and *** size distribution was measured by using a scanning mobility particle sizer(SMPS)and the results showed that the addition of SO2 can promote SOA formation,while different NOx concentrations have different influences on SOA *** NOx suppressed the SOA formation,whereas the particle mass concentration,particle number concentration and particle geometric mean diameter increased with the increasing NOx concentration at low NOx concentration in the presence of *** addition,the products of the OH-initiated oxidation of MG and the functional groups of the particle phase in the MG/OH/SO2 and MG/OH/NOx/SO2 reaction systems were detected by gas chromatography mass spectrometry(GC-MS)and attenuated total reflection fourier transformed infrared spectroscopy(AtR-FtIR)*** products,glyoxylic acid and oxalic acid,were detected by *** mechanism of the reaction of MG and OH radicals that follows two main pathways,H atom abstraction and hydration,is *** is provided for the formation of organic nitrates and organic sulfate in particle phase from IR *** of NOx and SO2 influence suggested that SOA formation from anthropogenic hydrocarbons may be more efficient in polluted environment.

关键词： Secondary organic aerosol Methylglyoxal OH-Initiated oxidation NOx SO2