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北京大学 [6]
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期刊论文 [14]
学位论文 [3]
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基于高分辨质谱的土壤溶解性有机质化学多样性研究
学位论文
北京: 中国科学院生态环境研究中心, 2018
作者:
李晓明
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浏览/下载:24/0
  |  
提交时间:2020/07/15
土壤溶解性有机质, 化学多样性,微生物多样性, 傅立叶变换离子回旋 共振质谱
decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms
Pd-Catalyzed Consecutive C-H-Arylation-Triggered Cyclotrimerization: Synthesis of Star-Shaped Benzotristhiazoles and Benzotrisoxazoles
期刊论文
CHEMISTRY-A EUROPEAN JOURNAL, 2018, 卷号: 24, 页码: 9041-9050
作者:
Xu, Zhanqiang
;
Oniwa, Kazuaki
;
Kikuchi, Hiromasa
;
Bao, Ming
;
Yamamoto, Yoshinori
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  |  
浏览/下载:11/0
  |  
提交时间:2019/12/02
benzotrisoxazoles
benzotristhiazoles
C-H arylation
cyclotrimerization
star-shaped molecules
Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals
期刊论文
LANGMUIR, 2018, 卷号: 34, 期号: 43, 页码: 13006-13013
作者:
Huang, Youju
;
Wang, Daoliang
;
Yan, Qi
;
Zhong, Fei
;
Li, Yahui
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浏览/下载:20/0
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提交时间:2018/12/04
Folic-acid Derivatives
Phase-transitions
Supramolecular Chirality
Functional Materials
Shaped Molecules
Smectic Phase
Assemblies
Induction
Transport
Behavior
Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals
期刊论文
LANGMUIR, 2018, 卷号: 34, 期号: 43, 页码: 13006-13013
作者:
Huang, Youju
;
Wang, Daoliang
;
Yan, Qi
;
Zhong, Fei
;
Li, Yahui
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  |  
浏览/下载:34/0
  |  
提交时间:2018/12/04
Folic-acid Derivatives
Phase-transitions
Supramolecular Chirality
Functional Materials
Shaped Molecules
Smectic Phase
Assemblies
Induction
Transport
Behavior
电场中V型液晶分子的相变行为
学位论文
2016, 2016
彭欢高
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浏览/下载:6/0
  |  
提交时间:2017/06/20
V型分子
蒙特卡罗
相变
电场
V-shaped molecules
Monte Carlo
phase transitional
electric field
Effects of thiophene-based mesogen terminated with branched alkoxy group on the temperature range and electro-optical performances of liquid crystalline blue phases
期刊论文
LIQUID CRYSTALS, 2016
Zhang, Weikai
;
He, WanLi
;
Di, Chenchen
;
Wang, Xin
;
Yang, Zhou
;
Wang, Dong
;
Cao, Hui
;
Yang, Dengke
;
Yang, Huai
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  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
liquid crystal
electro-optical performances
branched terminal
bent-shaped molecules
Blue phase
BENT-SHAPED MOLECULES
1,3,4-OXADIAZOLES
NANOPARTICLES
Triarylamine: Versatile Platform for Organic, Dye-Sensitized, and Perovskite Solar Cells
期刊论文
CHEMICAL REVIEWS, 2016
Wang, Jiayu
;
Liu, Kuan
;
Ma, Lanchao
;
Zhan, Xiaowei
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浏览/下载:6/0
  |  
提交时间:2017/12/03
HOLE-TRANSPORTING MATERIALS
OPEN-CIRCUIT VOLTAGE
INTERNAL CHARGE-TRANSFER
STAR-SHAPED MOLECULES
POWER CONVERSION EFFICIENCIES
DENSITY-FUNCTIONAL THEORY
LIGHT-EMITTING-DIODES
PI-A SENSITIZERS
LOW-BAND-GAP
HIGHLY-EFFICIENT
A New Pyrene Derivative Based on A-Shaped Troger's Base for Non-Doped Organic Blue Light-Emitting Diodes
其他
2014-01-01
Liang, Zuo-Qin
;
Wang, Xiao-Mei
;
Zhou, Yu-Yang
;
Chu, Zeng-Ze
;
Tao, Xu-Tang
;
Zou, De-Chun
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浏览/下载:10/0
  |  
提交时间:2015/11/16
Pyrene
Troger&apos
A-Shaped
Organic light emitting diodes
CONJUGATED POLYMERS
FLUORESCENCE
AGGREGATION
MOLECULES
FLUORENE
EMITTERS
DEVICES
ANALOGS
s base
Synthesis and photovoltaic properties of a star-shaped molecule based on a triphenylamine core and branched terthiophene end groups
期刊论文
SCIENCE CHINA-CHEMISTRY, 2013, 卷号: 56, 期号: 7, 页码: 997-1003
作者:
Gao Lei
;
Zhang Jing
;
He Chang
;
Shen SuLing
;
Zhang Yi
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  |  
浏览/下载:16/0
  |  
提交时间:2019/04/09
Organic Solar Cells
Star-shaped Photovoltaic Organic Molecules
Solution-processability
Effects of symmetrically 2,5-disubstituted 1,3,4-oxadiazoles on the temperature range of liquid crystalline blue phases: a systematic study
期刊论文
liquid crystals, 2013
Wang, Ling
;
He, Wanli
;
Wang, Meng
;
Wei, Meiju
;
Sun, Jian
;
Chen, Xingwu
;
Yang, Huai
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  |  
浏览/下载:2/0
  |  
提交时间:2015/11/11
blue phase
temperature range
2
5-disubstituted 1
3
4-oxadiazoles
molecular parameters
SET MODEL CHEMISTRY
ELECTROOPTICAL PERFORMANCES
SHAPED MOLECULES
TOTAL ENERGIES
NEMATIC PHASE
UNITS
DERIVATIVES
COMPOUND
DENSITY
ATOMS
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