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Application of Fourier transform ion cyclotron resonance mass spectrometry in molecular characterization of dissolved organic matter

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Science China Earth Sciences 2022年第12期65卷 2219-2236页

作者： Chen he ding he Chunmao CheN Quan SHI State Key Laboratory of heavy Oil Processing China University of PetroleumBeijing 102249China Department of Ocean Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) The Hong Kong University of Science and TechnologyHong Kong 999077China

Dissolved organic matter(DOM)plays an important role in the global carbon cycle,and an in-depth analysis of its chemical composition is fundamental to the study of its environmental and biogeochemical behavior and *** is a complex mixture of organic substances,and determining its molecular composition is a long-standing challenge in the field of analytical *** development and application of Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR MS)has enabled the identification of the chemical composition of DOM at the molecular *** paper summarizes progress made in the molecular characterization of DOM based on the FT-ICR MS technique,including DOM sample pretreatment methods,mass spectrometry ionization techniques,data acquisition,data processing and presentation,and molecular structure *** on the work done by the instrument at the State Key Laboratory of heavy Oil Processing in the China University of Petroleum,Beijing,we introduce applications of FT-ICR MS in the fields of earth science,environmental science and engineering,and look ahead to further research directions in the future.

关键词： Dissolved organic matter FT-ICR MS Molecular composition Recalcitrant dissolved organic matter High resolution mass spectrometry

Potential use of garlic products in ruminant feeding:A review

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Animal Nutrition 2023年第3期14卷 343-355页

作者： he ding Changjin Ao Xiaoqing Zhang Institute of Grassland Research Chinese Academy of Agricultural SciencesHohhot 010010China Key Laboratory of Animal Feed and Nutrition of Inner Mongolia Autonomous Region College of Animal ScienceInner Mongolia Agricultural UniversityHohhot 010018China

The addition of antibiotics as growth promoters to ruminant feed can result in bacterial resistance and antibiotic residues in ruminant ***,there is serious public concern regarding the presence of antibiotic residue in ruminant products and the consequent threat to human *** a result,the addition of plants and their products to ruminant feeds,as an alternative to antibiotics,has received much attention *** and its products are rich in organosulphur compounds,which have a variety of biological activities and have been widely used as natural additives in animal *** review presents recent knowledge on the addition of garlic products(powder,skin,oil,leaf and extracts)to the diets of *** this paper,garlic products are evaluated with respect to their chemical composition,bioactive compounds,and their impacts on the rumen ecosystem,antioxidant status,immune response,parasitic infection,growth performance and product quality of *** review provides valuable guidance and a theoretical basis for the development of garlic products as green,highly efficient and safe additives,with the aims of promoting ruminant growth and health,reducing methane emissions and improving ruminant product *** extracts have the potential to control parasite infections by decreasing the faecal egg *** powder,oil and allicin are able to reduce the methane emissions of *** compounds such as allicin,which is present in garlic products,have the potential to inhibit membrane lipid synthesis of the archaeal community,thus influencing the population of methanogenic archaea and resulting in a reduction in methane *** garlic products are also able to increase the average daily gain(garlic skin,water extract,and leaf)and the feed conversion ratio(garlic skin and leaf)of *** stalk silage fed to sheep has the potential to improve the nutritional value of mutton by increasing the

关键词： Garlic product Ruminant Methane emission Growth performance Product quality

Paternal transgenerational glucose intolerance with epigenetic alterations in second generation offspring of GDM

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Asian Journal of Andrology 2013年第4期15卷 451-452页

作者： Guo-Lian ding he-Feng Huang Women's Hospital School of Medicine ZhejiangUniversity Hangzhou 310006 China

Gestational diabetes mellitus （GDM） has been shown to be associated withhigh risk of diabetes in offspring. In addi tion to intergenerational transmission （F1 offspring）, intrauterine hyperglycemia also has effects on the second generation （F2 off spring）. However, the mechanisms involved and the possibilities of transgenerational transmission are still unclear. In a recent study published in Diabetes, we have uti lized GDM mouse model to identify hyper glycemic intrauterine environment causing a high risk of diabetes in offspring by alter ing epigenetic modification. Furthermore, the results indicate that the abnormality of phenotype and imprinted genes expression are more obvious in male offspring than that of female. The changes of epigenetics in sperm may contribute to transgenera tional transmission. A growing body of research suggests that exposure to the abnormal environment in uterus can lead to chronic health problems later in life.1 Intrauterine hyperglycemia is a major characteristic of GDM and has been suggested as an important determinative fac tor for the risk of diabetes in adulthood, it1 addition to the effects of genetic factors.2 The mechanism involved in the association between intrauterine hyperglycemia and a high risk of diabetes in offspring remains unclear.3 In mammals, epigenetic reprogram ming is involved in germ cells and early embryonic development.4＇5 Because erasure and establishment of the genomic imprints for some imprinted genes begin when migra tory primordial germ ceils enter the embry onic genital ridge through gametogenesis, epigenetic abnormalities that occur duringthis phase may be involved in transgenera tional transmission.6 In the study, ding et al.7 established a GDM mouse model of intrauterine hypergly cemia. The female （9） and male （or） F1 adults of control and GDM mice were intercrossed to obtain F2 offspring of four groups：（i） C0＂ C9; （ii） CCYGDMg; （iii） GDMCrCg; and （iv） GDMcYGDMg. We found that intrau terine hypergl

关键词： Paternal transgenerational intolerance

Synthesis and Crystal Structure of 2-(4’-Methylphenoxy)-5,8,9-trimethyl-3-phenyl Thieno[3′,2′:5,6]pyrido[4,3-d]pyrimidin-4-(3H)-one Hydrochloride

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Chinese Journal of Structural Chemistry 2006年第5期25卷 577-581页

作者： LIU Jian-Chao he Hong-Wu ding Ming-Wu College of Chemistry Central China Normal University Wuhan 430079 China

The title compound 2-（4＇-methylphenoxy）-5,8,9-trimethyl-3-phenyl thieno[3＇,2＇：5,6] pyrido[4,3-d]pyrimidin-4（3H）-one hydrochloride （C26H23Cl4N3O2S, Mr = 583.33） has been determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 14.8442（ 11 ）, b = 11.5131 （8）, c = 17.2010（13） A, β = 113.7250（10）°, V = 2691.3（3） ,A^3, Z = 4, Dc = 1.440 g/cm^3, S = 1.094,μ = 0.547 mm^-1, F（000） = 1200, the final R = 0.0571 and wR = 0.1458. X-ray analysis reveals that the title compound combines with a molecule of dichloromethane by an intramolecular hydrogen bond. The thienopyridine ring is almost coplanar, and the dihedral angle between the thiophene plane and the pyridine plane is 0.6°.

关键词： thieno[3',2':5,6]pyrido[4,3-d]pyrimidin-4(3H)-one,triphenylphosphine iminophosphorane crystal structure

INVESTIGATION AND APPLICATIONS OF PANSYSTEMS RECOGNITION TheORY AND PANSYSTEMS-OPERATIONS RESEARCH OF LARGE-SCALE SYSTEMS(Ⅱ)

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Applied Mathematics and Mechanics(English Edition) 1991年第1期12卷 71-76页

作者： Wu Xue-mou Guo ding-he Wuhan Digital Engineering Institute Wuhan Physics Department Hubei University Wuhan

Forming a connecting link between what goes before and comes after,this paper summarizes the general framework of pansystems me thodology and related mathematical modeling of fundamental concepts including generalized... 详细信息

关键词： PM TMs PM Core PM-opcration patterns modelling framework

Effects of dietary supplementation with Allium mongolicum Regel extracts on growth performance,serum metabolites,immune responses,antioxidant status,and meat quality of lambs

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Animal Nutrition 2021年第2期7卷 530-538页

作者： he ding Wangjing Liu Khas Erdene Hongxi Du Changjin Ao Key Laboratory of Animal Feed and Nutrition of Inner Mongolia Autonomous Region College of Animal ScienceInner Mongolia Agricultural UniversityHohhot 010018China

The present study was to evaluate the effects of dried Allium mongolicum Regel(AMR)powder and its water-and fat-soluble extracts(AWE and AFE)on the growth performance,serum metabolites,immune responses,antioxidant status,and meat quality of lambs.A total of 32 male small-tailed Han lambs(5 months old;initial body weight=34.8±0.40 kg)were used in a 60-d feeding experiment after a 15-d adaptation *** lambs were randomly divided into 4 groups(n=8)and fed a basal diet(control,CON group),the basal diet supplemented with dried AMR powder at 10 g/d per lamb(AMR group),the basal diet supplemented with AWE at 3.4 g/d per lamb(AWE group),or the basal diet supplemented with AFE at 2.8 g/d per lamb(AFE group).Blood samples were collected on d 0,30,and 60 in the feeding experiment(n-8).At the end of the experiment,the lambs were sacrificed and the longissimus dorsi muscles *** performance was not significantly affected by dietary supplementation of AMR,AWE and AFE(P>0.05).However,significantly lower albumin(P=0.006),total protein(P=0.006),globin(P=0.025),and blood urea nitrogen(P=0.024)concentrations were observed in AFE group relative to CON and AMR ***,a significantly lower lactate dehydrogenase activity(P=0.018)was observed in AFE group relative to AWE group,but not in other groups(P>0.05).In addition,significantly increasing trends in glutathione peroxidase(P=0.06)in AMR,AWE,and AFE groups were observed relative to the control ***,significantly lower drip loss(P-0.011)across the treatment groups and cooking loss(P-0.048)were observed in the AMR group relative to the control *** together,these results indicate that AMR and its extracts had no significant effect on lamb growth performance,antioxidant status,and immune responses,but could significantly improve meat quality without the occurrence of pathological kidney and liver lesions.

关键词： Allium mongolicum Regel Growth performance Serum metabolite Immune response Antioxidant status Meat quality

One-pot Synthesis and Crystal Structure of (1S,2R,3S,4R,5S)-1-Phenyl-2,4-dibenzoyl-3,5-difurylhexanol

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Chinese Journal of Structural Chemistry 2006年第6期25卷 699-703页

作者： CheN Xiang-Ming YIN Ye-Gao CheN he-Ru ding Jun Department of Chemistry Shantou University Shantou Guangdong 515063 China

（1S,2R,3S,4R,5S）-1-Phenyl-2,4-dibenzoyl-3,5-difurylhexanol 1 was synthesized by one-pot reaction of hypnone and furfurol in alkali H2O/EtOH solution and structurally defined to contain a chair-formed aliphatic carbo... 详细信息

关键词： substituted cyclohexanol one-pot synthesis crystal structure hydrogen bond

The optical and molecular signatures of DOM under the eutrophication status in a shallow,semi-enclosed coastal bay in southeast China

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Science China Earth Sciences 2021年第7期64卷 1090-1104页

作者： Chen ZHAO Yuping ZHOU Yu PANG Yanzhen ZHANG Wei HUANG Yuntao WANG ding he Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310027China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310027China

We applied stable carbon isotopes,ultraviolet-visible absorption(UV-Vis),fluorescence excitation-emission matrices spectroscopy(EEMs),and Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR-MS)to investigate the chemical composition and sources of the dissolved organic matter(DOM)in both the water column and pore water in Xiangshan Bay,a representative semi-enclosed and eutrophic bay in Zhejiang Province,*** protein-like fluorescent component(C1)and two humic-like fluorescent components(C2 and C3)were identified by PARAFAC *** concentration of dissolved organic carbon(DOC),the relative intensities of C2,C3,and black carbon-like compounds are all negatively correlated with salinity,indicating that there is a dilution effect of terrestrial signals by seawater in Xiangshan *** differences in light penetration ability of Xiangshan Bay cause different degrees of photo-degradation,which may play an important role in the transformation of organic matter in Xiangshan *** weak correlation between the C1 fluorescent component and salinity indicates that autochthonous sources cannot dominate the protein-like FDOM in the Xiangshan Bay drainage *** sources(such as anthropogenic inputs and release of pore water)also affect the distribution of the protein-like fluorescent component under eutrophication *** relative proportion of the protein-like fluorescent component in Xiangshan Bay is on a medium level in China and anthropogenic inputs may be a significant source of DOM in coastal bays.

关键词： Xiangshan Bay Dissolved organic matter Optical properties Molecular composition Transporting and processing

Research progress on rare earth up-conversion and near-infrared Ⅱ luminescence in biological applications

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Chinese Chemical Letters 2024年第2期35卷 87-96页

作者： Miao Yang Haijiang Gong Dan Yang Lili Feng Shili Gai Fangmei Zhang he ding Fei he Piaoping Yang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Yantai Research Institute Harbin Engineering UniversityYantai 264000China School of Pharmaceutical Sciences Zhengzhou UniversityZhengzhou 450001China

Rare earth luminescence has attracted widespread attention for several decades, among which nearinfrared(NIR) light-related up-conversion luminescence and NIR-Ⅱ luminescence are widely used in the biomedical field. The NIR-related luminescence is widely studied due to the excellent performance, such as good biocompatibility, deep tissue penetration depth, low self-fluorescence and minimal light damage to organisms. In this review, we mainly introduce the mechanism for rare earth up-conversion luminescence, NIR-Ⅱ luminescence and conclude their advantages compared with traditional *** excellent priorities provide the basis for NIR-related luminescence bioimaging in vivo. Additionally,we hilglight the scheme for the sensitive detection of substances in organisms and various methods for biological therapy. In spite of the existing research, it is outlined that NIR-related luminescence has great potential to be applied in different aspects, expanding perspectives and future challenges of research in related fields. Based on the current scientific achievements, this review can provide reference for research in the areas mentioned above, expand the research direction and arouse a broad interest in different disciplines to pay attention to rare earth luminescence.

关键词： Rare earth Up-conversion NIR-Ⅱ Imaging Biosensor Therapy