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| 1 | A Robust CRISPR/Cas9 System for Convenient, High-Efficiency Multiplex Genome Editing in Monocot and Dicot Plants显示文摘CRISPR/Cas9 染色体指向系统被用于许多种类。然而,为植物报导的 mostCRISPR/Cas9 系统能仅仅修改一个或一些指向地点。这里,我们报导一个柔韧的 CRISPR/Cas9 向量系统,利用植物 codon 优化了 Cas9 基因,为方便、高效率的复合染色体在 monocot 和 dicot 植物编辑。我们设计了基于 PCR 的过程很快产生多重 sgRNA 表达式盒子,它能在一个轮由金门结扎或吉布森汇编克隆被装配进二进制 CRISPR/Cas9 向量。与这个系统,我们与 85.4% 变化评估的一般水准在米饭编辑了 46 个目标地点,主要在 biallelic 和同型结合的地位。我们推想在米饭的大约 16% 同型结合的变化通过相应基于再结合的修理跟随的非相应的加入结束的机制被产生。我们也获得了一致 biallelic,在 Arabidopsis T 1 植物的异质接合、同型结合、妄想的变化。在米饭和 Arabidopsis 的指向的变化是可继承的。我们在 T 0 米饭和 T 1 由同时的指向的 Arabidopsis 植物多重(多达八) 一个基因家庭,在一条 biosynthetic 小径的多重基因,或在单个基因的多重地点的成员。这个系统为为基本研究和基因改进在植物学习多重基因和基因家庭的功能提供了一个万用的工具箱。 | Xingliang Ma Qunyu Zhang Qinlong Zhu Wei Liu Yan Chen Rong Qiu Bin Wang Zhongfang Yang Heying Li Yuru Lin Yongyao Xie Rongxin Shen Shuifu Chen Zhi Wang Yuanling Chen Jingxin Guo Letian Chen Xiucai Zhao Zhicheng Dong Yao-Guang Liu | 2015 | Molecular Plant2015，8，8： | 272 |
| 2 | Temporal variation of soil carbon stock and its controlling factors over the last two decades on the southern Song-nen Plain,Heilongjiang Province显示文摘对全球气候变化的当前的背景,在土壤碳水池和它的控制因素的变化的学习可以在温室气体的缓解或改进帮助土壤角色的评估。这份报纸在 Heilongjiang 省在南部的 Song-nen 平原在土壤碳水池和他们的控制因素学习空间、时间的变化,用在二个不同时期由上收集的土壤数据在 20052007 的多种用途的地区性的 Geochemical 调查,和另外一个玷污在 19821990 进行的调查。学习区域是 1479 t/km2 并且在过去的 20 年里的碳来源,从直到 2005 的 1980 年代,从土壤的实际的碳排放是 0.12 Gt。温度,被发现了线性地被相关玷污器官的碳,是控制器官的碳满足的土壤的主导的 climatologic 因素。我们的学习在器官的碳由升起的温度引起了的土壤的潜在的损失是的相关区域和时间时期显示出那 0.10 Gt ,源于陆地使用变化的潜在的土壤碳排放是 0.09 Gt ,并且温暖和陆地使用变化引起的土壤碳( 0.19 Gt )的联合潜在的损失比得上石块燃料燃烧( 0.21 Gt )的。由于在土壤碳水池变化的时间延期,仍然在温暖和以后将逐渐地被释放的陆地使用变化引起的潜在的排放有 0.07 Gt。 | Xueqi Xia Zhongfang Yang Yan Liao Yujun Cui Yansheng Li | 2010 | Geoscience Frontiers2010，1，1： | 19 |
| 3 | The altitude effect of ^(18)δO in precipitation and river water in the Southern Himalayas显示文摘The lapse rate of water isotopes is used in the study of the hydrologic cycle as well as in the estimation of uplift of the Tibetan Plateau.The greater elevation contrast in the Southern Himalayas allows for a detailed discussion about this lapse rate.We analyze variations of 18δO in precipitation and river water between 1320 m and 6700 m elevations in the Southern Himalayas,and calculate the specific lapse rate of water 18δO.The results show that the multi-year average lapse rate in precipitation over this region is 0.15‰/100 m.The one-year average lapse rate is 0.17‰/100 m from three sites along the Southern Himalayas.The two results agree,but are much lower than the global average of 0.28‰/100 m.This work also shows that there is a difference in precipitation 18δO lapse rate between the monsoon and non-monsoon seasons.The calculated precipitation lapse rate is much lower than that in surface water. | WEN Rong TIAN LiDe WENG YongBiao LIU ZhongFang ZHAO ZhongPing | 2012 | Chinese Science Bulletin2012，57，14： | 11 |
| 4 | Seasonal variations of stable isotope in precipitation and moisture transport at Yushu,eastern Tibetan Plateau显示文摘Precipitation δ 18O at Yushu, eastern Tibetan Plateau, shows strong fluctuation and lack of clear seasonality. The seasonal pattern of precipitation stable isotope at Yushu is apparently different from either that of the southwest monsoon region to the south or that of the inland region to the north. This different seasonal pattern probably reflects the shift of different moisture sources. In this paper, we present the spatial comparison of the seasonal patterns of precipitation δ 18O, and calculate the moisture transport flux by using the NCAR/NCEP reanalysis data. This allows us to discuss the relation between moisture transport flux and precipitation δ 18O. This study shows that both the southwest monsoon from south and inland air mass transport from north affected the seasonal precipitation δ 18O at Yushu, eastern Tibetan Plateau. Southwest monsoon brings the main part of the moisture, but southwest transport flux is weaker than in the southern part of the Tibetan Plateau. However, contribution of the inland moisture from north or local evaporation moisture is enhanced. The combined effect is the strong fluctuation of summer precipitation δ 18O at Yushu and comparatively poor seasonality. | TIAN LiDe MA LingLong YU WuSheng LIU ZhongFang YIN ChangLiang ZHAO ZhongPing TANG Wei WANG Yu | 2008 | Science China Earth Sciences2008，51，8： | 9 |
| 5 | Seasonal variations in the Sr-Nd isotopic compositions of suspended particulate matter in the lower Changjiang River:Provenance and erosion constraints显示文摘Suspended particulate matter samples were collected monthly for more than 2 years in Nanjing,China to examine seasonal changes in the Sr-Nd isotopic compositions of the lower Changjiang River(CR).The results indicate that the 87Sr/86Sr ratios of the samples ranges from 0.725352 to 0.738128,and the values ofεNd(0)ranges from-10.55 to-12.29.The Sr-Nd isotopic compositions show distinct seasonal variations.The samples had lower 87Sr/86Sr ratios and higherε Nd(0)values during the flood season than the dry seasons.The seasonal variations primarily reflect the controls of provenance rocks and erosion in different sub-catchments.The relative decrease in 87Sr/86Sr ratios and the increase inε Nd(0)values during the flood season may reflect an increasing in the mechanical erosion rate in the upper basin and the contribution of more sediment from the upper reaches.The end member values of 87Sr/86Sr andε Nd(0)of the samples were 0.728254 and?11.26,respectively. | MAO ChangPing CHEN Jun YUAN XuYin YANG ZhongFang JI JunFeng | 2011 | Chinese Science Bulletin2011，56，22： | 7 |
| 6 | μ-and m-calpain expression and activity changes following diethylstilbestrol injection in the rat anterior pituitary显示文摘Little is known about changes in calpain activity in the pituitary gland.In the present study,μ-and m-calpain activity changes were detected in the rat anterior pituitary following intraperitoneal injection of diethylstilbestrol.Double-immunofluorescence labeling confirmed colocalization of μ-and m-calpain in prolactin-secreting cells(lactotrophs).Western blot analysis revealed significantly increased expression of both calpains,which accompanied upregulated cytosol and membrane zymographic activities at 12 weeks following diethylstilbestrol injection,compared with rats injected with sunflower oil.Moreover,following estrogen injection,pituitary gland pathological damage gradually worsened with increasing time.Results demonstrated that estrogen regulated calpain expression and activity,and both calpains participated in the pathophysiological processes of the pituitary gland.Ubiquitous calpain expression could serve as an effective target for anti-estrogen drugs. | Weijiang Zhao Zhongfang Shi Fang Yuan Guilin Li Yazhuo Zhang Zhongcheng Wang | 2011 | Neural Regeneration Research2011，6，1： | 7 |
| 7 | Water vapor δD dynamics over China derived from SCIAMACHY satellite measurements显示文摘This study investigates water vapor isotopic patterns and controls over China using high-quality water vapor δD data retrieved from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography(SCIAMACHY) observations.The results show that water vapor δD values on both annual and seasonal time-scales broadly exhibit a continental effect,with values largely decreasing northwestward from coastal lowlands to high-elevation mountainous regions.However,region-specific analysis reveals spatially distinct patterns of water vapor δD between seasons.In the monsoon domain(e.g.,China south of 35°N),depletion in D in the summer and fall seasons is closely tied to monsoon moisture sources(the Indian and Pacific oceans) and subsequent amount effect,but higher δD values in winter and spring are a result of isotopically-enriched continental-sourced moisture proceeded by less rainout.In contrast,farther inland in China(non-monsoon domain),moisture is derived overwhelmingly from the dry continental air masses and local evaporation,and δD values are largely controlled by the temperature effect,exhibiting a seasonality with isotopically enriched summer and depleted winter/spring.The observation that the spatial pattern of water vapor δD is the opposite to that of precipitation δD in the summer season also suggests that partial evaporation of falling raindrops is a key driver of water vapor isotope in the non-monsoon domain.This study highlights the importance of non-Rayleigh factors in governing water vapor isotope,and provides constraints on precipitation isotope interpretation and modern isotope hydrological processes over China. | LIU ZhongFang Kei YOSHIMURA Casey D.KENNEDY WANG XinHui PANG ShuoGuang | 2014 | Science China Earth Sciences2014，57，4： | 7 |
| 8 | Temporal and spatial variations of δ^18O in precipitation of the Yarlung Zangbo River Basin显示文摘这份报纸在 2005 在四个车站(Lhaze, Nugesha, Yangcun 和 Nuxia ) 在降水基于未 1 8O 的变化在 Yarlung Zangbo 河盆的降水揭示稳定的同位素的时间、空间的变化。结果证明降水的未 1 8O 在 Yarlung Zangbo 河盆有不同季节的变化。未 1 8O 的更高的价值在季风降水以前在春天发生,并且更低的价值发生在季风降水期间。从空间变化,沿着 Yarlung Zangbo 河山谷在潮湿运输期间与高度效果和 rainout 处理,降水的 18O 逐渐地被弄空。因此,降水的未 1 8O 逐渐地减少从对下游在上游,并且在降水的未 1 8O 的差错率为二个原因是约 0.34 鈥 ? 100m 和 0.7 鈥 ? 100km。在季风降水期间,在降水的未 1 8O 的空间变化被数量效果在大规模统治摘要的状况。 | LIU Zhongfang TIAN Lide YAO Tandong GONG Tongliang YIN Changliang YU Wusheng | 2007 | Journal of Geographical Sciences2007，17，3： | 7 |
| 9 | An effective strategy to establish a male sterility mutant mini-library by CRISPR/Cas9-mediated knockout of anther-specific genes in rice显示文摘Male sterility(MS),characterized by functional defects in male organs or gametes,is an important agronomic trait for hybrid seed production,especially for self-pollinated crops such as rice(Oryza sativa L)(Chen and Liu,2014).Spontaneous MS mutants are rare and difficult to maintain in nature,thus limiting basicresearch and breeding.Artificial mutants are typically generated by physical,chemical,or biological mutagenesis(Wei et al,2013).Recently developed genome editing systems such as CRISPR/Cas9 allow efficient and timesaving knockout of endogenous genes at specific sites(Smith et al,2000;Moscou and Bogdanove,2009;Gasiunas et al.,2012). | Kun Ma Jingluan Han Yu Hao Zhongfang Yang Junyu Chen Yao-Guang Liu Qinlong Zhu Letian Chen | 2019 | Journal of Genetics and Genomics2019，46，5： | 6 |
| 10 | Fucoxanthin induces growth arrest and apoptosis in human bladder cancer T24 cells by up-regulation of p21 and down-regulation of mortalin显示文摘Fucoxanthin,自然类胡萝卜素,被报导了在人的结肠癌房间,人的前列腺癌症房间,人的白血病房间,和人的上皮的颈的癌症房间举办反癌症活动。这研究被承担把 fucoxanthin 的分子的机制与人的膀胱癌症 T24 房间线作比较。 MTT 分析结果证明 5 和 10 M fucoxanthin 在生长拘捕在 G 0/G1伴随的一个剂量依赖者和时间依赖者举止禁止了 T24 房间的增长房间周期的阶段,被 p21 的起来规定调停,cyclin依赖的 kinase ( CDK )禁止的蛋白质和 CDK-2 , CDK-4 , cyclin D1 ,和 cyclin E 的下面规定。另外, 20 和 40 M fucoxanthin 由 mortalinp53 建筑群的废除和原子变异类型的 p53 的复活导致了 T24 房间的 apoptosis,它也让肿瘤 suppressor 作为野类型的 p53 工作。所有这些结果证明 T24 房间上的 fucoxanthin 的反癌症活动被 p21 的起来规定经由在 mortalin ,它是的表示水平,一个压力管理者和热的一个成员震惊的减少在低剂量和 apoptosis 在 G 0/G1阶段与房间周期拘捕联系蛋白质 70 ,在高剂量由劈开的 caspase-3 的起来规定列在后面。 | Linbo Wang Yang Zeng Ye Liu Xuansheng Hu Shuhong Li Yuepeng Wang Ling Li Zhongfang Lei Zhenya Zhang | 2014 | Acta Biochimica et Biophysica Sinica2014，46，10： | 5 |
| 11 | Safety and superior immunogenicity of heterologous boosting with an RBD-based SARS-CoV-2 mRNA vaccine in Chinese adults显示文摘Dear Editor,To May 2022,the COVID-19 pandemic has claimed more than 6.28 million lives,with more than 524 million confirmed cases worldwide.The recent emergence of highly transmissible Omicron variant of severe acute respiratory syndrome coronavirus 2(SARSCoV-2)has triggered another major surge in both confirmed cases and deaths.1 Ten COVID-19 vaccines have been approved by the World Health Organization(WHO)for emergency use,including the two mRNA vaccines,BNT162b2 and mRNA-1273,and two Chinese inactivated vaccines,CoronaVac and BBIBP-CorV.However,the rapid waning of vaccine-induced virus-neutralizing antibody titers and the continuous emergence of variants of concern(VOCs),including Alpha,Beta,Delta and Omicron,have created unprecedented challenges in the eradication of COVID-19 pandemic.2–4. | Xiaoqiang Liu Yuhua Li Zhongfang Wang Shouchun Cao Weijin Huang Lin Yuan Yi-Jiao Huang Yan Zheng Jingjing Chen Bo Ying Zuoyun Xiang Jin Shi Jincun Zhao Zhen Huang Cheng-Feng Qin | 2022 | Cell Research2022，32，8： | 5 |
| 12 | Ecological risk assessment of Cd and other heavy metals in soil-rice system in the karst areas with high geochemical background of Guangxi,China显示文摘Karst areas are widely distributed in China,and the soil derived in these areas is enriched with trace elements and has the typical characteristics of high geochemical background.Therefore,soil ecological risk has gradually attracted extensive attention.In this study,1090 sets of rice grains and paired rhizosphere soils were collected as research objects from the outcropped karst areas of carbonate rocks in Guangxi,and the concentration characteristics and influencing factors of heavy metals,such as Cd and As,in rice grains and the corresponding soils were studied.According to the Chinese Soil Environmental Quality Standard(GB 15618-2018),the proportion of karstic soil samples in Guangxi with heavy metal(As,Cd,Cr,Cu,Hg,Ni,Pb and Zn)concentrations that exceed the standard risk screening values was generally greater than that of surface soils in China or non-karstic soils in Guangxi.Notably,Cd and As were the most prominently enriched heavy metals in soils.According to the Chinese Food Safety Standard(GB 2762-2017),Pb in rice grains from the studied area did not exceed the standard;the exceedance rates of Cr,Hg,and inorganic As were only about 1%;and the exceedance rate of Cd was 12.5%.Soil Cd concentration increased gradually whereas the concentration and exceedance rate of Cd in rice grains decreased gradually with the increase of soil pH.Specifically,the exceedance rate of Cd in rice grains was only 4%when soil pH>6.5.The results indicated that the risk screening values of Cd element in the Chinese Soil Environmental Quality Standard are not satisfactorily applicable to the ecological risk assessment of Cd in karstic soils.Therefore,the recommended threshold values for the safe utilization and risk control of Cd in karstic soils was proposed so as to provide a basis for soil environmental quality hierarchization,pollution risk control and land safety zoning of agricultural land in karst areas in China. | Qiong YANG Zhongfang YANG Qizuan ZHANG Xu LIU Xiaoxiong ZHUO Tiansheng WU Lei WANG Xueji WEI Junfeng JI | 2021 | Science China Earth Sciences2021，64，7： | 5 |
| 13 | A study of soil organic carbon distribution and storage in the Northeast Plain of China显示文摘采用联合起来的土壤碳数量(USCA ) 途径,土壤碳存储基于在 20042006 进行的多种用途的地区性的 Geochemical 调查(MRGS ) 越过中国的东北平原被计算。结果显示在表层土(00.2 m ) 的器官的碳(SOC ) 存储,心土(01 m ) 和深土壤(01.8 m ) 是的土壤有 3327.8 t/km2, 12,904.7 t/km2 和 16,157.5 t/km2 的密度的 768.1 山, 2978.4 山和 3729.2 山分别地。而土壤碳密度从东北平原(辽宁)的南部的区域显示出一个清楚的增加趋势,这些价值以表层土特别地与国家一般水准一致,到中间(吉林)和北平原( Heilongjiang )碳密度,从 2284.2 增加了,到 3436.7 和 3861.5 t/km2 ,分别地。与在 19841986 从第二国家土壤调查获得的碳数据(SNSS ) 相比,从 MRGS 的表层土 SOC 存储值被发现由 320.59 山(29.4%) 减少了,与在 20 年的 16.0 山(l.73%) 的平均年度衰落。在平原的南部、中间、北的区域,分别地,土壤碳密度为整个平原与 1389.0 t/km2 的平均价值由 1060.6 t/km2, 1646.4 t/km2 和 1300.2 t/km2 减少了。这些调查结果显示在土壤碳密度的减少根据不同生态系统和陆地使用类型变化了。因此,土壤碳密度的比率被计算以便学习碳,并且进一步探索分发特征在生态系统之间的动态平衡,以及 SOC 的隐遁潜力。 | Xiaohuan Xi Zhongfang Yang Yujun Cui Shumei Sun Chengguang Yu Min Li | 2011 | Geoscience Frontiers2011，2，2： | 5 |
| 14 | Study on the interaction between diphenhydramine and erythrosin by absorption,fluorescence and resonance Rayleigh scattering spectra显示文摘In pH 4.5 Britton-Robinson(BR)buffer solution,erythrosin(ET)can react with diphenhydramine(DP)to form a 1:1 ion-association complex,which not only results in the change of the absorption spectra,but also results in the great enhancement of resonance Rayleigh scattering(RRS)and the quenching of fluorescence.Furthermore,a new RRS spectrum will appear,and the maximum RRS wavelength was located at about 580 nm.In this work,the spectral characteristics of the absorption,fluorescence and RRS,the optimum conditions of the reaction and the properties of an analytical chemistry were inves- tigated.A sensitive,simple and new method for the determination of DP by using erythrosin as a probe has been developed.The detection limits for DP were 0.0020μg/mL for RRS method,0.088μg/mL for absorption method and 0.094μg/mL for fluorophotometry.There was a linear relationship between the absorbance,RRS and fluorescence intensities and the drug concentration in the range of 0.0067-2.0, 0.29-6.4 and 0.31-3.2μg/mL,respectively.The effects of the interaction of diphenhydramine and erythrosin on the absorption,fluorescence and resonance Rayleigh scattering spectra were discussed. In light polarization experiment,the polarization of RRS at maximum wavelength was measured to be P =0.9779,and it revealed that the RRS spectrum of DP-ET complex consists mostly of resonance scat- tering and few resonance fluorescence.In this study,enthalpy of formation and mean polarizability were calculated by AM1 quantum chemistry method.In addition,the reaction mechanism and the rea- sons for the enhancement of scattering spectra and the energy transfer between absorption,fluores- cence and RRS were discussed. | TANG XiaoLing LIU ZhongFang LIU ShaoPu HU XiaoLi | 2007 | Science China Chemistry2007，50，1： | 4 |
| 15 | Adsorption of cesium from aqueous solution using agricultural residue – Walnut shell: Equilibrium, kinetic and thermodynamic modeling studies显示文摘 | Dahu Ding Yingxin Zhao Shengjiong Yang Wansheng Shi Zhenya Zhang Zhongfang Lei Yingnan Yang | 2013 | Water Research2013，，： | 4 |
| 16 | The susceptibility of T5-TG12 of theCFTR gene in chronic bronchitis occurrence in a Chinese population in Jiangsu province,China显示文摘Mutations in the cystic fibrosis transmembrane conductance regulator(CFTR) gene have been implicated in the onset of cystic fibrosis and other clinical respiratory disorders.In the present study,we investigated the role of CFTR variations,poly-T,TG-repeats,and M470V in susceptibility to bronchial asthma and chronic bronchitis in a Chinese population in Jiangsu province,China.A total of 72 bronchial asthma patients,68 chronic bronchitis patients,and 117 healthy subjects were included in this study.The Tn-TGm haplotype was sequenced and the CFTR variant M470V was detected using restriction fragment length polymorphism(RFLP).We found that the frequency of T5-TG12-V470 in chronic bronchitis patients was 0.07%,which was notably higher than that in healthy subjects(0.01%) and bronchial asthma patients(0.04%).Thus,the presence of the T5-TG12 haplotype of the CFTR gene is likely to play a role in the development and progression of respiratory conditions,such as chronic bronchitis. | Ping Wang Satoru Naruse Hong Yin Zhongfang Yu Tianqu Zhuang Wei Ding Yanmin Wu Muxin Wei | 2012 | The Journal of Biomedical Research2012，26，6： | 4 |
| 17 | Study on the absorption and fluorescence and resonance Rayleigh scattering spectra of Cu (II)-fluoroquinolone chelates with erythrosine and their applications显示文摘In pH 4.2-5.0 Britton-Robinson buffer solution medium, fluoroquinolone antibiotics (FLQs), such as ciprofloxacin (CIP), norfloxacin (NOR), ofloxacin (OF), levofloxacin (LEV), lomefloxacin (LOM), and sparfloxacin (SPA), react with Cu (II) to form chelate cations, which further bind with erythrosine to form the ion association complexes. They can result in the changes of the absorption spectra. Simultane- ously, erythrosine fades obviously and the maximum fading wavelength is located at 526 nm. The fad- ing reactions have high sensitivities. Thus, new spectrophotometries of determination for these drugs are developed. The ion-association reactions result in the quenching of fluorescence, which also have high sensitivities. The detection limits for six antibiotics are in the range of 7.1-12.2 μg·L?1. Furthermore, the reactions can result in the enhancement of resonance Rayleigh scattering (RRS). The maximum scattering peaks of six ion-association complexes are located at 566 nm, and there are two small RRS peaks at 333 nm and 287 nm. The detection limits for fluoroquinolone antibiotics are in the range of 1.70 -3.10 μg·L?1 for RRS method. Among the above three methods, the RRS method has the highest sen- sitivity. In this work, we investigated the spectral characteristics of the absorption, fluorescence and RRS, the optimum conditions of the reactions, and the properties of the analytical chemistry. In addi- tion, the mechanism of reactions were discussed by density function theory (DFT) and AM1 methods. | WANG Jian LIU ZhongFang LIU ShaoPu LIU JiangTao SHEN Wei YI AoEr | 2008 | Science China Chemistry2008，51，1： | 3 |
| 18 | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000显示文摘Spatial distributions of 0-20 cm soil carbon sources/sinks caused by land use changes from the year 1980 to 2000 in an area of 2.97 × 10~6 km^2 in eastern China were investigated using a land use dataset from a recent soil geochemical survey.A map of soil carbon sources/sinks has been prepared based on a spatial analysis scheme with GIS.Spatial statistics showed that land use changes had caused 30.7 ± 13.64 Tg of surface soil organic carbon loss,which accounts for 0.33%of the total carbon storage of 9.22 Pg.The net effect of the carbon source was estimated to be ~ 71.49 Tg soil carbon decrease and ~40.80 Tg increase.Land use changes in Northeast China(NE) have the largest impact on soil organic carbon storage compared with other regions.Paddy fields,which were mainly transformed into dry farmland in NE,and constructed land in other regions,were the largest carbon sources among the land use types.Swamp land in NE was also another large soil carbon source when it was transformed into dry farmland or paddy fields.Dry farmland in the NE region formed the largest soil organic carbon sink,as some were transformed into paddy fields,forested land,and other land use types with high SOCD. | Xueqi Xia Zhongfang Yang Yuan Xue Xin Shao Tao Yu Qingye Hou | 2017 | Geoscience Frontiers2017，8，3： | 3 |
| 19 | Penta-P2X (X=C, Si) monolayers as wide-bandgap semiconductors: A first principles prediction显示文摘 | Mosayeb Naseri Shiru Lin Jaafar Jalilian Jinxing Gu Zhongfang Chen | 2018 | Frontiers of physics2018，13，3： | 3 |
| 20 | N-heterocyclic carbene as a promising metal-free electrocatalyst with high efficiency for nitrogen reduction to ammonia显示文摘Electrocatalytic nitrogen reduction reaction(NRR)at ambient conditions holds great promise for sustainably synthesizing ammonia(NH3),while developing highly-efficient,long-term stable,and inexpensive catalysts to activate the inert N≡N bond is a key scientific issue.In this work,on the basis of the concept'N-heterocyclic carbenes(NHCs)',we propose a carbon decorated graphitic-carbon nitride(C/g-C3N4)as novel metal-free NRR electrocatalyst by means of density functional theory(DFT)computations.Our results reveal that the introduced C atom in g-C3N4 surface can be regarded as NHCs and catalytic sites for activating N≡N bond,and are stabilized by the g-C3N4 substrate due to sterically disfavored dimerization.Especially,this NHCs-based heterogeneous catalysis can efficiently reduce the activated N2 molecule to NH3 with a low overpotential of 0.05 V via an enzymatic mechanism.Our work is the first report of NHCs-based electrocatalyst for N2 fixation,thus opening an alternative avenue for advancing sustainable NH3 production. | Hongyan Li Le Yang Zhongxu Wang Peng Jin Jingxiang Zhao Zhongfang Chen | 2020 | Journal of Energy Chemistry2020，29，7： | 3 |
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