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chinese Journal of Chemistry 2004年第7期22卷 714-718,615页

作者：魏琴吴丹杜斌张慧欧庆瑜lanzhou institute of chemical {3. chinese academy of sciences lanzhou Gansu 73.000 China School of Chemistry & chemical Engineering Jinan University Jinan Shandong 250022 China Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou Gansu 730000 China School of Chemistry & chemical Engineering Jinan University Jinan Shandong 250022 China

The application of 5'-nitrosalicylfluorone (5'-NSF)-molybdenum(VI) complex as a spectroscopic probe was studied. In the buffer medium of HOAc-NaOAc at 3.45 and in the presence of PVA 124 microemulsion, 5'-NSF-Mo(VI) complex combines protein rapidly to form a stable compound, leading to an absorbance decrease at 525 nm of 5'-NSF-Mo(VI) complex. According to this change, microdetermination of protein has been described. Bovine serum albumin (BSA) could be determined in the linear range of 0—16 g昺L-1 with the detection limit of 11 ngmL-1. Many amino acid and metal ions studied do not interfere with the assay. The method possesses high sensitivity as well as high selectivity. It can be used to determine protein in human urine and milk powder successfully. The relative standard deviations are in all instances less than 4.7%, and the recoveries are between 97.6% and 106.0%. Moreover, the binding number of BSA with the complex, which is determined by using molar ratio, Rosenthanl graphic and slope ratio methods, is in good agreement with each other.

关键词： protein spectrophotometry 5'-NSF-Mo(VI) complex microemulsion

Characterization and Tribological Behavior of Octadecene,Dodecene and Undecenoic Acid Films on Si Substrate

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Journal of Materials Science & Technology 2005年第5期21卷 671-674页

作者： Jinfang ZHOU+ and Shengrong YANGState Key Laboratory of Solid Lubrication, lanzhou institute of chemical {3., chinese academy of sciences, lanzhou73.000, China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

The films of octadecene, dodecene, and undecenoic acid were prepared on H-terminated Si surface in the presence of ultraviolet irradiation. The resulted films were characterized with water-contact angle measurement and infrared spectroscopy. The friction-reducing behavior of the prepared films was examined on a static-dynamic friction coefficient measurement apparatus and on an atomic force microscope. It was found that all the reacted films on the Si substrate showed good friction-reducing ability; especially, the film of the octadecene exhibited the best friction-reducing ability. This was attributed to the transfer of the reacted films onto the counter face with formation of a transfer film on the counterpart surface, which led to the transformation of the sliding between the reacted films and the hard ceramic to fiat between the reacted films and its transfer film on the counterpart surface. The macroscopic and microscopic friction behaviors of the prepared films were dependent on their molecular chain lengths. Thus the octadecene reacted film with the highest degree of ordering arrangement showed the best friction-reducing and antiwear abilities in sliding against Si3.4.

关键词： Alkese Reaction film Hydrogen-terminated silicon Tribological behavior

The solid lubricating material experiment device for Shenzhou-7 Spaceship

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Science China(Technological sciences) 2010年第9期53卷 2521-2527页

作者： WANG Ke1,2,REN WeiJia1,WANG ShiDa1 & WENG LiJun3.1 academy of Opto-Electronics,chinese academy of sciences,Beijing 100190,China 2 Graduate University of chinese academy of sciences,Beijing 100049,China 3.{3. institute of chemical physics,chinese academy of sciences,lanzhou 73.000,China academy of Opto-Electronics Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China lanzhou institute of chemical {3. Chinese Academy of Sciences Lanzhou China

A solid lubricating material exposure experiment in space is one of the missions during the seventh manned spaceflight of China,and the key is to develop a device which can be fixed reliably outside of the orbital module and can be fetched conveniently by an astronaut during space *** solid lubricating material experiment device needs to be locked reliably in a vibrating and impacting environment during the launch phase,and should meet the requirement that it can be unlocked and fetched reliably by the astronaut wearing an extravehicular spacesuit via simple operations in orbit in an environment of high and low *** for the device we developed,the environmental characteristic of the mission was analyzed,the mechanical analysis and thermal analysis were carried out,and then a mechanism with functions of mechanical locking,structural self-locking and manual unlocking was *** device was verified by a sequence of experiments and was fetched by the astronaut during the flight of the Shenzhou-7 Spaceship.

关键词： manned spaceflight exposure experiment mechanism unlock

C_(19)-DITERPENOID ALKALOIDS OF DELPHINIUM MOLLIPILUM

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chinese chemical Letters 1995年第2期6卷 101-102页

作者： Suo Ming ZHANG Qing Yu Ou(lanzhou institute of chemical {3., chinese academy of sciences, lanzhou 73.000) chinese Acad Sci Lanzhou Inst Chem Phys Lanzhou 730000 Peoples R China

Five C19-diterpenoid alkaloids were isolated from the aerial parts of Delphinium mollipilum ***. Four proved to be the known talitine B,talitine A, browniine and delcosine, while the fifth was a new C19-diterpenoid al...

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Organic geochemical studies of sinking particulate material in China sea area Ⅱ——Geochemical significance of compositional features of ketone, aldehyde and alcohol compounds

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chinese Science Bulletin 1997年第22期42卷 1894-1898页

作者： DUAN Yi,CUl Mingzhong, MA Lanhua, SONG Jinming, ZHOU Shixin and LUO Binjie1. lanzhou institute of Geology, chinese academy of sciences, {3., China 2. Earthquake Research institute of lanzhou, SSB, {3., China 3. institute of Oceanology, chinese academy of sciences, Qingdao 266071, China lanzhou institute of Geology Chinese Academy of Sciences Lanzhou China Earthquake Research institute of lanzhou SSB Lanzhou China institute of Oceanology Chinese Academy of Sciences Qingdao China

SINKING particulate organic matter of the sea plays an important role in marine environment. Itnot only provides food for marine organisms and takes part in chemical cycling, but also pro-vides sedimentary organic matter for marine sediments. Therefore, researchers always payclose attention to the source and processes of transport and transformation of marine sinkingparticulate organic matter. Its transport process can be understood by measuring the

关键词： marine sinking paniculate material composition of lipid compounds organic matter source and biochemical pro-cesses.

Catalytic Activity and Stability of Mo_2N in CO Oxidation

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chinese chemical Letters 1998年第6期9卷 579-581页

作者： Guo Huang XIE Zhi Cheng JIANG Ting Fang BAI Han Qing WANG(lanzhou institute of chemical {3., chinese academy of sciences,lanzhou 73.000) lanzhou Inst. of chemical physics Chinese Academy of Sciences Lanzhou 730000 China

Molybdenum nitride powder with 115 m^2g^(-1) of Sg has been prepared by atemperature programmed reaction of MoO_3.in H_2/N_2 mixture. It exhibited high catalyticactivity in CO oxidation at low temperatures. DTA in airflow showed that the crystalphase of Mo_2N was maintained under 500℃. The suitable operation temperature isbelow 500℃ in CO oxidation.

关键词： Mo_2N CO oxidation stability

AN　ESR　STUDY　OF　MgO　TREATED　WITH　SHOCK　WAVE

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chinese chemical Letters 1996年第5期7卷 487-490页

作者： Ting Lu YANG Kang XU Liang Bo FENG and Shi Kong SHEN (lanzhou institute of chemical {3., chinese academy of sciences. lanzhou 73.000) lanzhou Inst. of chemical physics Chinese Academy of Sciences Lanzhou 730000

Abstract:A MgO sample treated with shock wave was studied by using electron spin resonance(ESR) spectroscopy. An isotropic ESR singal at g=2.002 could be designated to F centers. O2 superoxide ions penetrated into the surface layer of NgO powder after shocking were identified at gxx=2.006, gyy=2.009,and gzz=2.***.2.025. The change of surface adsorption ability for O2 of shocked MgO was discussed.

关键词： ESR STUDY MgO AN

Asymmetric Catalytic Hydrogenation Using Rhodium Diphosphinites Derived From D-glucose and D-mannitol

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chinese chemical Letters 2000年第7期11卷 587-588页

作者： Peng JIANG Shi Jie LU(State Key Laboratory of Oxo Synthesis and Selective Oxidation, lanzhou institute of chemical {3., chinese academy of sciences, lanzhou 73.000) State Key Lab. Oxo Synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

Three diphosphinites were synthesized for preparing rhodium-diphosphinite complexes. The complexes were used for asymmetric catalytic hydrogenation of amino acid precursor alpha-acetamidocinnamic acid and its methyl e... 详细信息

关键词： asymmetric catalysis hydrogenation rhodium diphosphinites alpha-acetamidocinnic acid

CORRELATION　BETWEEN　THE　CATALYTC　PROPERTY　AND　Zr^（3.）　ION　FOR　ZrO_2　IN　CO　HYDROGENATION

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chinese chemical Letters 1996年第3期7卷 269-270页

作者： Wen LI Liang Bo FENG Yuan Qi YIN (lanzhou institute of chemical {3.,chinese academy of Science,lanzhou 73.000) lanzhou Inst. of chemical physics Chinese Academy of Sciences Lanzhou 730000

In this letter the catalytic properties of zirconia in CO hydrogenation are presented. Thecatalylsts were prepared under different conditions. Some of them have good activity andselectivity for olefins, especially for isobutcne. The catalysts were characterized by *** results showed that all good catalysts give an EPR signal at g=1.974 which canbe assigned to Ze(3.) on the surface of ZrO2. The probable active center of ZrO2 catalyst wassuggested.

关键词： HYDROGENATION BETWEEN THE AND PROPERTY ZrO2 CORRELATION

Studies on Synthesis of Stationary Phase Containing Nicotinamide Adenine Dinucleotide(NAD) Bonded to Phospholipid-Coated Aminated Silica for HPLC

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chinese chemical Letters 1997年第3期8卷 243-246页

作者： Jin Mao YOU Zong Qin RUAN Jing Wu KANG (lanzhou institute of chemical {3., chinese academy of sciences, 73.000) lanzhou Inst. of chemical physics Chinese Academy of Sciences 730000 China

Recently biospecific affinity chromatography has been widely used for the separation and purification of various enzymes and nucleic acids. In this paper, a series of synthetic reactions of solid-liquid phase were carried out on silica surface, using a macroporous(3. mu m), microspherical silica (8 mu m) as the matrix and gamma-aminopropyltriethoxysilane as the activating agent, the nicotinamide adenine dinucleotide(NAD) was bonded through its amino groups to the carboxylic groups of linked phospholipid which was bonded covalently on aminated support. The bonded stationary phase has high thermal stability, and could be used to separate of nucleotides with good resolution.

关键词： NAD Bonded to Phospholipid-Coated Aminated Silica for HPLC Studies on Synthesis of Stationary Phase Containing Nicotinamide Adenine Dinucleotide