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Norditerpenoids biosynthesized by variediene synthase-associated P450 machinery along with modifications by the host cell Aspergillus oryzae

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Synthetic and Systems Biotechnology 2022年第4期7卷 1142-1147页

作者： Lan Jiang Kangjie Lv Guoliang Zhu Zhi Lin Xue Zhang Cuiping Xing huanting yang Weiyan Zhang Zhixin Wang Chengwei Liu Xudong Qu Tom Hsiang Lixin Zhang Xueting Liu State Key Laboratory of Bioreactor Engineering East China University of Science of TechnologyShanghaiChina State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology Shanghai Jiao Tong UniversityShanghai200240China Key Laboratory of Saline-alkali Vegetation Ecology Restoration Ministry of EducationCollege of Life SciencesNortheast Forestry UniversityHarbinChina School of Environmental Sciences University of Guelph50 Stone Road EastGuelphOntarioCanada

The chemical diversity of terpenoids is typically established by terpene synthase-catalyzed cyclization and diversified by post-tailoring *** bifunctional terpene synthase(BFTS)associated P450 enzymes have shown significant catalytic potentials through the development of various new terpenoids with different biological *** study discovered the BFTS and its related gene cluster from the plant endophytic fungus Didymosphaeria variabile *** expression of the BFTS in Saccharomyces cerevisiae resulted in the characterization of a major product diterpene variediene(1),along with two new minor products neovariediene and *** heterologous expression of the BFTS and one cytochrome P450 enzyme VndE(CYP6138B1)in Aspergillus oryzae NSAR1 led to the identification of seven norditerpenoids(19 carbons)with a structurally unique 5/5 bicyclic ring ***,in vivo experiments suggested that the cyclized terpene variediene(1)was modified by VndE along with the endogenous enzymes from the host cell *** through serial chemical conversions,followed by multi-site hydroxylation via *** endogenous *** work revealed that the two-enzymes biosynthetic system and host cell machinery could produce structurally unique terpenoids.

关键词： Bifunctional terpene synthases Norditerpenoids Cytochrome P450 Aspergillus oryzae Heterologous expression

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苹果属植物叶片角质层厚度与抗旱性

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天津农学院学报 1996年第3期3卷 27-29页

作者：杨静慧杨焕婷天津农学院园艺系天津300381

本文研究了7个苹果种类叶片角质层厚度与抗旱性的关系。通过不同时期叶片角质层厚度的测定,发现:春季各供试种苹果叶片角质层厚度均比夏季叶片的薄。变叶海棠春季叶片角质层最厚,显著高于其它种类,抗春旱能力强,夏季,其叶片角质层也明... 详细信息

本文研究了7个苹果种类叶片角质层厚度与抗旱性的关系。通过不同时期叶片角质层厚度的测定,发现:春季各供试种苹果叶片角质层厚度均比夏季叶片的薄。变叶海棠春季叶片角质层最厚,显著高于其它种类,抗春旱能力强,夏季,其叶片角质层也明显加厚。湖北海棠、花叶海棠、新疆野苹果和三叶海棠春季叶片角质层较薄,抗春旱能力差;夏季叶片角质层较春季增厚1倍以上,表明其成熟叶抗旱力强。小金海棠和沧江海棠叶角质层春、夏季均较薄,抗春旱和伏旱的能力差。

关键词：苹果属角质层抗旱性

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铅,汞对细绿萍的生物效应

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天津农学院学报 1996年第2期3卷 22-25页

作者：任安芝杨焕婷天津农学院园艺系天津300381

本文研究了细绿萍对不同浓度的铅和汞在生长发育和生理等方面作出的反应。结果表明,一定浓度的铅和汞不仅能抑制细绿萍的生长和发育,且能使其中的叶绿素含量下降,并对可溶性蛋白的含量也有一定的影响。

关键词：细绿萍重金属耐性

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Advanced membranes and membrane processes toward green chemical engineering

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Green Chemical Engineering 2021年第1期2卷 1-2页

作者： Zhongyi Jiang huanting Wang School of Chemical Engineering at Tianjin University China Director of the Monash Centre for Membrane Innovation at Monash University Australia

Membrane technologies are broadly used in many industrial separation processes owing to their distinct advantages in low energy consumption,high separation efficiency and low environmental *** membrane science has become one of the core drivers for green chemical *** the membrane field,tremendous research efforts are being devoted to develop novel membranes and advance fundamental membrane science for improving existing membrane separations and addressing pendent separation challenges for a greener future.

关键词： separation chemical pendent

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Mixed-dimensional covalent organic framework membrane toward sustainable desalination

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Science China Chemistry 2022年第8期65卷 1453-1454页

作者： Xiaofang Chen huanting Wang School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241China Department of Chemical and Biological Engineering Monash Centre for Membrane InnovationMonash UniversityClaytonVictoria 3800Australia

Membrane-based separation technologies have been widely used in extracting fresh water from various water sources,including seawater,brackish water,and wastewater,to address the shortage of clean and safe water worldw... 详细信息

关键词： wastewater separation extracting

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Challenges in membrane-based liquid phase separations

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Green Chemical Engineering 2021年第1期2卷 3-13页

作者： Ze-Xian Low huanting Wang Department of Chemical Engineering Monash UniversityClaytonVictoria3800Australia

Membranes are widely used in separation processes due to their low energy requirement,small footprint and *** membranes have been developed based on novel materials and fabrication techniques to address separation challenges in the field of membrane *** the case of liquid phase separations,ion-ion separation and chiral resolution using membranes have attracted growing interest for their applications such as in high-value mineral extraction and pharmaceutical ***,reverse osmosis operation favors ultra-high-pressure range for treating feed with higher salinity with higher water *** we highlight the latest development and design approaches of single species-selective membranes and pressure-resistant membranes and discuss the current limitations of membrane separation in the liquid *** subsequently review recent advancement in the fabrication techniques that enable the making of these membranes from emerging materials.

关键词： materials. separation phase.

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The evaluation of biological productivity by triple isotope composition of oxygen trapped in ice-core bubbles and dissolved in ocean:a review

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Advances in Polar Science 2022年第2期33卷 123-134页

作者： ZHOU Yaqian PANG Hongxi HU huanting yang Guang HOU Shugui Key Laboratory of Coast and Island Development of Ministry of Education School of Geography and Ocean ScienceNanjing UniversityNanjing 210023China Institute of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China

The ^(17)O anomaly of oxygen(Δ^(17)O,calculated from δ^(17)O and δ^(18)O)trapped in ice-core bubbles and dissolved in ocean has been respectively used to evaluate the past biosphere productivity at a global scale and gross oxygen production(GOP)in the mixed layer(ML)of *** to traditional methods in GOP estimation,triple oxygen isotope(TOI)method provides estimates that ignore incubation bottle effects and calculates GOP on larger spatial and temporal *** from TOI of O_(2) trapped in ice-core bubbles,the averaged global biological productivities in past glacial periods were about 0.83-0.94 of the present,and the longest time record reached 400 ka BP(thousand years before the present).TOI-derived GOP estimation has also been widely applied in open oceans and coastal oceans,with emphasis on the *** the TOI method has been widely used in aquatic ecosystems,TOI-based GOP is assumed to be constant at a steady state,and the influence of physical transports below the ML is *** TOI method applied to evaluate past total biospheric productivity is limited by rare samples as well as uncertainties related to O_(2) consumption mechanisms and terrestrial biosphere’s hydrological *** studies should take into account the physical transports below the ML and apply the TOI method in deep *** addition,study on the complex land biosphere mechanisms by triple isotope composition of O_(2) trapped in ice-core bubbles needs to be strengthened.

关键词： triple oxygen isotope ice-core bubbles dissolved oxygen in ocean biological productivity

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Hydrothermal synthesis of AlPO4-5:Effect of precursor gel preparation on the morphology of crystals

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Progress in Natural Science:Materials International 2012年第6期22卷 684-692页

作者： Dan Li Jianfeng Yao huanting Wang Department of Chemical Engineering Monash UniversityClaytonVic 3800Australia Environmental Engineering School of Engineering and Information TechnologyMurdoch UniversityMurdochWA 6150Australia

This paper reports on the effect of precursor gel preparation on the microstructural formation of aluminophosphate-5(AlPO4-5) molecular sieves in the hydrothermal *** morphology of AlPO4-5 crystal changed from sphere to ellipse with two symmetrical craters when the aluminophosphate precursor gel was prepared via dropwise addition of acid and TEA under strong stirring,and continuous stirring overnight during the gel aging *** results also showed that both of well-crystallized spherical and elliptical AlPO4-5 crystals covered by the fibrous crystals could be hydrothermaily synthesized at 150℃for 4 h or *** average particle size of spherical AlPO4-5 samples was about 35-45μm in diameter,whereas the elliptical AlPO4-5 exhibited approximately 13μm in width and 15μm in length.

关键词： Aluminophosphate AlPO4-5 Stirring Elliptical structure Crater structure

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High-sensitivity photonic crystal fiber sensor based on surface plasmon resonance

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Optoelectronics Letters 2024年第7期20卷 393-399页

作者： FENG huanting GAO Jiachen MING Xianbing School of Physical Science and Technology Tiangong UniversityTianjin 300387China1

In this paper,we propose a photonic crystal fiber(PCF)sensor based on the surface plasmonic resonance(SPR)effect for simultaneous temperature and refractive index(RI)*** coupling characteristics and sensing performance of the sensor are analyzed using the full vector finite element method(FEM).The sensor provides two channels for independent measurement of RI and *** operating independently,channel I supports y-polarized light with a sensitivity of up to 7000 nm/RIU for detecting RI,while channel II supports x-polarized light with a sensitivity of up to 16 nm/℃for detecting ***,we investigate the influence of gold layer thickness on the sensing performance to optimize the sensor.

关键词： temperature measurement fiber

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Dimethoxymethane production via CO_(2)hydrogenation in methanol over novel Ru based hierarchical BEA

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Journal of Energy Chemistry 2022年第3期31卷 181-189,I0006页

作者： Waqar Ahmad Fan Liang Chan Abhijit Shrotri Yayati Naresh Palai huanting Wang Akshat Tanksale Department of Chemical Engineering Monash UniversityClayton 3800Australia Institute for Catalysis Hokkaido UniversitySapporo 001-0021Japan

Dimethoxymethane(DMM),a diesel blend fuel,is being researched with high interest recently due to its unique fuel *** is commercially produced via a two step-process of methanol oxidation to make formaldehyde,followed by its condensation with *** study presents a one-pot method of DMM synthesis from methanol mediated carbon dioxide hydrogenation over novel heterogeneous *** effect of catalyst pore structure was investigated by synthesizing 3 wt%Ru over novel hierarchical zeolite beta(HBEASX)and comparing against Ru doped commercial zeolite beta(CBEA)and desilicated hierarchical zeolite beta(HBZDS).The results showed that 3%Ru/HBEASX provided the best activity for DMM production due to its large average pore *** also showed the decisive role of SiO_(2)/Al_(2)O_(3)molar ratio,with SiO_(2)/Al_(2)O_(3)=75 providing the highest DMM yield of 13.2 mmol/*** with ca.100%*** activity of 3%Ru/HBEAS3 after 5 recycle steps demonstrated the reusability of this catalyst.

关键词： Dimethoxymethane Methanol solvent CO_(2)hydrogenation Hierarchical BEA SiO_(2)/Al_(2)O_(3)molar ratio Ru catalysts

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