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Recent advances in metal-organic frameworks for catalytic CO_(2) hydrogenation to diverse products

Nano Research 2022年第12期15卷 10110-10133页

作者： Shengxian Shao Chengqian Cui Zhiyong Tang Guodong Li CAS key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China

Selective hydrogenation of CO_(2) to high value-added chemicals,not only gives an effective way to reduce the concentration of CO_(2),but also provides the precursors to advance the industrial manufacturing of chemicals and *** the well-defined reticular frameworks and flexible modifiability,metal-organic frameworks(MOFs)can be the ideal platform to construct the enabled catalysts for CO_(2) hydrogenation,because they have shown the great potential for the enhancement of catalytic activity,the precise control of selectivity,and the excellent *** this review,we systematically summarize the recent advances in MOFs based catalysts for CO_(2) hydrogenation towards diverse ***,synthesis strategies for different kinds of MOFs based catalysts are ***,selective hydrogenation of CO_(2) towards CO and methane is discussed over various metal nanoparticles/MOFs ***,heterogenization and isolation of molecular catalysts by MOFs are elaborated for producing formic ***,selective hydrogenation of CO_(2) toward methanol is discussed in terms of interface structures of Cu,Zn,and metal nodes of MOFs,the synergy between auxiliary sites and noble metal,and tandem catalytic systems of molecular catalysts and Lewis acid ***,the integration of multiple metal sites,promoters,and cocatalysts into MOFs is described for the selective hydrogenation of CO_(2) to C2+*** those,the key issue about the stability of MOFs based catalysts for CO_(2) hydrogenation reaction is ***,the summary and perspective about MOFs based catalysts for selective CO_(2) hydrogenation and mechanism research are proposed.

关键词： selective CO_(2)hydrogenation metal-organic frameworks(MOFs) noble metal nonnoble metal diverse products mechanism

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Soil microbial communities as potential regulators of N2O sources in highly acidic soils

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Soil Ecology Letters 2023年第4期5卷 81-87页

作者： Junhui Yin Huaihai Chen Pengpeng Duan Kun Zhu Naihui Li Yan Ma Yumeng Xu Jingheng Guo Rui Liu Qing Chen beijing key laboratory of Farmyard Soil Pollution Prevention-control and Remediation College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China State key laboratory of Biocontrol School of EcologySun Yat-sen UniversityGuangzhou 510006China key laboratory of Agro–Ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China College of Land Science and Technology China Agricultural UniversityBeijing 100193China Department of Horticulture Northeast Agricultural UniversityHarbin 150030China

●Soil pH was a key driver of N2O emission and sources in acidic soils.●N2O emission was significantly positively associated with the ratio of ITS to 16S.●N2O was significantly correlated with bacterial and fungal community composition.●Fungi contributed to N2O in highly acidic tea plantations and vegetable *** soil is a main source of global nitrous oxide(N2O)***,the mechanism behind the high N2O emissions from acidic soils remains a knowledge *** objective of this microcosm incubation study was to pin-point the microbial mechanisms involved in N2O production processes in acidic *** that purpose,the isotopic signatures and microbial community structure and composition of four soil samples were *** results showed that highly acid soils(pH=3.51)emitted 89 times more N2O than alkaline soils(pH=7.95)under the same nitrogen(N)*** denitrification caused high N2O emissions in acidic *** to 16S abundance ratio was positively correlated with cumulative N2O emissions from the tested *** highly acid soils(pH<4.5)showed greater fungal nirK gene abundance and lower abundance of AOA-amoA,AOB-amoA,nirK,nosZ I and nosZ II *** unclassified Aspergillaceae fungi(63.65%)dominated the highly acidic soils and was the most strongly correlated genus with N2O *** findings highlight that soil microbial community structures,denitrifying fungi in particular,shaped by low pH(pH<4.5)lead to high N2O emissions from acidic soils.

关键词： nitrous oxide ITS 16S ratio fungal denitrification soil pH vegetable field tea plantation

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Fluctuation characteristics and topological interface states in the quasi-periodic structures of shallow-water waves

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Journal of Hydrodynamics 2024年第5期36卷 925-933页

作者： Xue Guan Bo-ya Xiao Yu Liu Meng Chen College of Mechanical and Electrical Engineering Hohai UniversityChangzhou213200China key laboratory of Microgravity Institute of MechanicsChinese Academy of SciencesBeijing100190China

Compared with periodic structures,quasi-periodic structures have superior band gap properties and topological interface *** this paper,a one-dimensional quasi-periodic Fibonacci water wave metamaterial model that can be used to apply quasi-periodic structures to shallow-water wave systems is *** fluctuation characteristics of periodic and quasi-periodic structures are examined using finite element numerical calculations based on the shallow-water wave *** research results show that the band characteristics of quasi-periodic structures are complex,enabling flexible control of the propagation of shallow-water ***,the mirror-symmetrical design of Fibonacci quasi-periodic water wave metamaterials was created to engineer the topological interface states in shallow-water wave systems,ultimately achieving successful localization of wave *** research will greatly enrich our understanding of topology,expand the potential applications of quasi-periodic structures,and provide new insights for manipulating water waves and harvesting energy.

关键词： Water wave metamaterial quasi-periodic structure Fibonacci sequence topological interface states

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Anoxic Biological Phosphorus Uptake in A^2O Process

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Chinese Journal of Chemical Engineering 2005年第4期13卷 516-521页

作者： WANG Xiaolian（王晓莲） WANG Shuying（王淑莹） PENG Yongzhen（彭永臻） key laboratory of beijing Water Environment Recovery Beijing University of Technology Beijing 100022 China

A lab-scale anaerobic-anoxic-oxic (A2O) process used to treat a synthetic brewage wastewater was investigated. The objectives of the study were to identify the existence of denitrifying phosphorus removing bacteria (DPB), evaluate the contribution of DPB to biological nutrient removal and enhance the denitrifying phosphorus removal in A2O bioreactors. Sludge analysis confirmed that the average anoxic P uptake accounted for approximately 70% the total amount of P uptake, and the ratio of anoxic P uptake rate to aerobic P uptake rate was 69%. In addition, nitrate concentration in the anoxic phase and different organic substrate introduced into the anaerobic phase had significant effect on the anoxic P uptake. Compared with conventional A2O processes, good removal efficiencies of COD, phosphorus, ammonia and total nitrogen (92.3%, 95.5%, 96% and 79.5%, respectively) could be achieved in the anoxic P uptake system, and aeration energy consumption was saved 25%. By controlling the nitrate recirculation flow in the anoxic zone, anoxic P uptake could be enhanced, which solved the competition for organic substrates among poly-P organisms and denitrifiers successfully under the COD limiting conditions. Therefore, in wastewater treatment plants the control system should be applied according to the practical situation to optimize the operation.

关键词： A^2O process nitrogen and phosphorus removal denitrifying phosphorus removing bacteria nitrate recirculation flow

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Honeycomb-like biochar framework coupled with Fe_(3)O_(4)/FeS nanoparticles as efficient heterogeneous Fenton catalyst for phenol degradation

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Journal of Environmental Sciences 2024年第2期136卷 390-399页

作者： Aihua Cheng Yi He Xiaohe Liu Chi He Department of Environmental Engineering College of Geology and EnvironmentXi’an University of Science and TechnologyXi’an 710054China State key laboratory of Multiphase Flow in Power Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China National Engineering laboratory for VOCs Pollution control Material and Technology University of Chinese Academy of SciencesBeijing 101408China

Achieving an efficient and stable heterogeneous Fenton reaction over a wide pH range is of great significance for wastewater ***,a pollen-derived biochar catalyst with a unique honeycomb-like structure,coupled with the dispersion of magnetic Fe_(3)O_(4)/FeS(Fe/S)nanoparticles,was synthesized by simple impregnation precursor,followed by *** prepared Fe/S-biochar catalyst demonstrated outstanding phenol degradation efficiency across a wide pH range,with 98%of which eliminated even under neutral conditions(pH 7.0).The high catalytic activity was due to the multilevel porous structure of pollenderived biochar provided enough active sites and allowed for better electron transfer,then increases oxidation ability to promote the ***,the acid microenvironment formed by SO_(4)^(2-)group from Fe/S composite extended the pH range for Fenton reaction,and S^(2-)facilitated the conversion of≡Fe^(3+)to≡Fe^(2+),resulting in remarkable degradation ***,biochar can effectively promote cycling stability by limiting Fe *** work may provide a general strategy for designing 3D framework biochar-based Fe/S catalysts with excellent performance for heterogeneous Fenton reactions.

关键词： Biomass Biochar Fenton reaction Fe_(3)O_(4)/FeS(Fe/S) Phenol degradation

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Integration of ecology and biology for the management of rodents:International perspectives 3

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Integrative Zoology 2008年第1期3卷 1-2页

作者： Zhibin Zhang Hongjun Li Jens Jacob Peter R.Brown State key laboratory of Integrated Management of pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina Federal Biological Research Centre for Agriculture and forestry Institute for Nematology and Vertebrate ResearchMünsterGermany CSIRO Sustainable Ecosystems GPO Box 284CanberraAustralia

This special issue of Integrative Zoology is the third and final one in a series of issues containing papers presented at the Third International Conference on Rodent Biology and Management(ICRBM).The conference was held in Hanoi,Vietnam in August 2006 and focused on the areas of rodent biology,ecology and management(for details,please the summary report by *** see Integrative Zoology,1(4),194–195).The 1st ICRBM was held in beijing,China,in *** 2nd ICRBM was held in Canberra,Australia,in *** of these two conferences were also published(Singleton et al.1999;Singleton et al.2003).This special issue contains a diverse range of papers examining rodents in urban environments,rodent behaviour and biology,and rodents in agricultural systems.

关键词： please Integration details

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Effect of low basicity refining slag on evolution and removal of oxide inclusions in 55SiCrA spring steel

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Journal of Iron and Steel Research International 2023年第9期30卷 1755-1768页

作者： Chen Wang Wei Tang Jiang-shan Zhang Jun-xiong Huang Kun-rui Shen Jun Chen Qing Liu State key laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Xiangtan Branch Hunan Valin Iron&Steel Co.Ltd.Xiangtan 411100HunanChina

The laboratory experiments,thermodynamic analysis,dynamic analysis,and industrial trials were carried out to investigate the influence of refining slag on the evolution and removal of oxide inclusions in 55SiCrA spring *** reduction in basicity and Al_(2)O_(3) content in refining slag can reduce the[Al]s content in the molten steel,which is conducive to the control of the low melting point of ***,the refining slag with excessively low basicity transfers the oxygen element to molten steel and increases the Al_(2)O_(3) content in inclusions,which is harmful to the control of *** to the chemical compositions of inclusions and refining slag in laboratory experiments,their physical parameters were *** maximum separation ratio and the moving time of inclusions to reach the maximum separation ratio(t_(max))of inclusions under different laboratory experimental conditions were *** maximum separation ratio of inclusions is positively correlated with the overall wettability(coshIMS)among the slag,steel,and *** maximum separation ratio of inclusions obtained by laboratory experiments is between 85%and 91%.The t_(max) decreases with the decline in basicity and Al_(2)O_(3) content of refining slag,but excessively low basicity will increase the t_(max).The basicity of refining slag in the range of 0.88–0.97 and the content of Al_(2)O_(3) less than 6%is not only conducive to reducing the content of Al_(2)O_(3) and the melting point of inclusions but also beneficial to removing the inclusions to the *** slag system shows good metallurgical results in industrial trials.

关键词： Thermodynamic analysis Dynamic analysis Oxide inclusion Evolution mechanism Removal ratio Overall wettability

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Incidence and mortality of gastric cancer in China

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World Journal of Gastroenterology 2006年第1期12卷 17-20页

作者： Ling Yang National Office for Cancer Prevention and control Beijing 100021 China

Gastric cancer is one of the most frequent cancers in the world; almost two-thirds of gastric cancer cases and deaths occur in less developed regions. In China, based on two national mortality surveys conducted in 1970s and 1990s, there is an obvious clustering of geographical distribution of gastric cancer in the country, with the high mortality being mostly located in rural areas, especially in Gansu, Henan, Hebei, Shanxi and Shaanxi Provinces in the middle-western part of China. Despite a slight increase from the 1970s to early 1990s, remarkable declines in gastric cancer mortality were noticed in almost the entire population during the last decade in China. These declines were largely due to the dramatic improvements in the social-economic environment, lifestyle, nutrition, education and health care system after economic reforms started two decades ago. Nevertheless, gastric cancer will remain a significant cancer burden currently and be one of the key issues in cancer prevention and control strategy in China. It was predicted that, in 2005, 0.3 million deaths and 0.4 million new cases from gastric cancer would rank the third most common cancer. The essential package of the prevention and control strategy for gastric cancer in China would focus on controlling Helicobacter pylori （H pylori infection, improving educational levels, advocating healthy diet and anti-tobacco campaign, searching for cost-effective early detection, diagnosis and treatment programs including approaches for curable management and palliative care.

关键词： Gastric cancer, Incidence Mortality

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Corrigendum to“Emerging Organic Contaminants in Chinese Surface Water:Identification of Priority Pollutants”[Engineering 11(2022)111-125]

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Engineering 2023年第12期31卷 139-140页

作者： Mengmeng Zhong Tielong Wang Wenxing Zhao Jun Huang Bin Wang Lee Blaney Qingwei Bu Gang Yu beijing key laboratory for Emerging Organic Contaminants control State Key Joint Laboratory of Environment Simulation and Pollution Control(SKLESPC)School of EnvironmentTsinghua UniversityBeijing 100084China Department of Chemical Biochemicaland Environmental EngineeringUniversity of Maryland Baltimore CountyBaltimoreMD 21250USA School of Chemical and Environmental Engineering China University of Mining and Technology-BeijingBeijing 100083China

The authors regret that the acceptable daily intake(ADI)values of 0.082 μg·kg^(-1)·d^(-1) for N,N-diethyl-3-methyl benzoyl amide(DEET),0.19 μg·kg^(-1)·d^(-1) for triclosan,and 0.83 μg·kg^(-1)·d^(-1) for acetaminophen cited from a review by Murray et al.[1],as shown in Table S4 in Appendix A of the original article,were not correct.

关键词： benzoyl diethyl

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Effects of Cotrimoxazole Prophylaxis Initiation and Discontinuation on Mortality and Attrition Rates among HIV Patients Who Initiate ART in Southwest China:An Observational Cohort Study

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Biomedical and Environmental Sciences 2021年第8期34卷 646-649页

作者： ZHU Jin Hui RUAN Yu Hua PAN Stephen YANG Wen Min ZHU Qiu Ying CHEN Huan Huan SHEN Zhi Yong LAN Guang Hua XING Hui SHAO Yi Ming LI Li Ming School of Public Health Peking UniversityBeijing 100191China Guangxi Center for Disease control and Prevention Nanning 530028GuangxiChina State key laboratory of Infectious Disease Prevention and control(SKLID) Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesChinese Center for Disease Control and Preventio n(China CDC)Beijing 100032China Department of Health and Environ mental Sciences Xi'an Jiaotong-Liverpool UniversitySuzhou 215123JiangsuChina

Combination antiretroviral therapy(ART)reduced AIDS-related mortality and increased survival among patients living with HIV by interrupting HIV replication,enhancing immune recovery,and preventing the onset of opportunistic infections[1].In China,ART has rapidly been scaled up since the beginning of the National Free Antiretroviral Treatment Program(NFATP)in 2003[2].By the end of 2016,489,411 individuals diagnosed with HIV were receiving free antiretroviral treatment in *** is firmly committed to reducing overall AIDS-related mortality and HIV incidence within the ***,similar to other low-and middle-income countries,the NFATP is challenged by high mortality and attrition shortly after patients initiate ART[3].

关键词： mortality Observation continuation

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