Resource Type

Journal Article 365

Year

2024 1

2023 33

2022 26

2021 31

2020 34

2019 32

2018 22

2017 32

2016 34

2015 29

2014 8

2013 15

2012 7

2011 8

2010 7

2009 13

2008 5

2007 7

2006 3

2005 1

open ︾

Keywords

C. dubia 2

Additive manufacturing 2

Algae 2

C-S-H gel 2

C/N ratio 2

Lead 2

Membrane fouling 2

Salinity 2

concrete 2

cooling 2

denitrifying phosphorus removal 2

invasion 2

optimization 2

oxygen reduction reaction 2

passivation 2

pig 2

prognosis 2

proliferation 2

synergistic effect 2

open ︾

Search scope:

排序： Display mode:

Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (

Sofiya K. MUHABA, Felix D. DAKORA

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4,   Pages 455-466 doi: 10.15302/J-FASE-2020354

Abstract: respiration and photosynthesis and its supply at low levels can affect legume nodulation, N fixation, and Cthe genotypes significantly increased their shoot biomass, symbiotic performance, grain yield, and CThere was, however, no effect on shoot δ C values in either year.The three genotypes differed significantly in δ N, %Ndfa, N-fixed, grain yield, C concentration, and δ C.

Keywords： shoot yield     N-fixed     %Ndfa     δ<sup>15sup>N     δ<sup>13sup>C     water-use efficiency    

HTML PDF Collect

Precipitation study of CO

Siming Chen, Yue Wu, Geoffrey W. Stevens, Guoping Hu, Wenshou Sun, Kathryn A. Mumford

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 415-424 doi: 10.1007/s11705-019-1882-4

Abstract: Focused beam reflectance measurement (FBRM) and C nuclear magnetic resonance ( C NMR) analysis wereC NMR spectroscopic analysis showed that the crystals precipitated from the CO -unsaturated KGLY solutions

Keywords： crystallization     precipitation     glycinate     FBRM     <sup>13sup>C NMR    

HTML PDF Collect

Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1986-2000 doi: 10.1007/s11705-023-2337-5

Abstract: Breakage of the C–N bond is a structure sensitive process, and the catalyst size significantly affectsOn the active metal nanoparticle scale, the role of catalyst size in C–N bond cleavage has not been clearlyResults showed a 13 times higher reaction rate for sp<sup>3sup>-hybridized C–N bond cleavage than sp<sup>2sup>-hybridized C–N bond cleavage, while the reaction rate tended to increase first and thenbond cleavage activity, and the step atoms are the active sites for the C–N bond cleavage.

Keywords： sp<sup>3sup>/sp<sup>2sup>-hybridized C–N bond     noble metal nanoparticle     catalytic active site     turnover    

HTML PDF Collect

Solvability and thermal response of cellulose with different crystal configurations

Qian CHEN, Kai ZHENG, Qingtao FAN, Kun WANG, Haiyan YANG, Jianxin JIANG, Shijie LIU

Frontiers of Engineering Management 2019, Volume 6, Issue 1,   Pages 62-69 doi: 10.1007/s42524-019-0001-z

Abstract:

Cellulose is a biodegradable and renewable natural material that it is naturally resistant to breaking and modification. Moreover, the crystalline structure of cellulose is a major factor restricting its industrial utilization. In this study, cellulose polymorphs were prepared from natural cellulose, and their solvability and thermal response were investigated. Using liquid- and solid-state NMR signals, the distinct types and dissolving states of cellulose polymorphs were identified. The thermal behavior of the polymorphic forms of cellulose-d was also evaluated, and cellulose II exhibited the poorest thermal stability and a unique exothermic reaction.

Keywords： cellulose     crystal structure     thermal response     XRD     CP/MAS <sup>13sup>C NMR    

HTML PDF Collect

Application and mechanism of polysaccharide extracted from Enteromorpha to remove nano-ZnO and humic acid in coagulation process

Jianzhang Sun, Baoyu Gao, Yuanxia Luo, Moxi Xue, Xing Xu, Qinyan Yue, Yan Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 3, doi: 10.1007/s11783-018-1029-8

Abstract: Enteromorpha polysaccharide (Ep) extracted from alga a novel green coagulant aid for nanoparticles (NPs) and heavy metal ions removal and the structure of EP was intensively studied in this study. The integration of Ep with polyaluminum chloride (PAC-Ep) coagulants exhibited higher coagulation performance than that of the polyaluminum chloride (PAC) because of the negatively charged NPs suspension and humic aid (HA) solution. Significant high removal efficiencies of dissolved organic matter (94.1%), turbidity (99.3%) and Zn ions (69.3%) were achieved by the PAC-Ep coagulants. The dual-coagulation properties of PAC-Ep for different pollutants was based on multiple mechanisms, including (i) Al charge neutralization; (ii) hydroxy aluminum hydroxyl bridging formed polynuclearhydroxy complexes bridge and sweep colloidal particles; (iii) adsorption and bridging of Ep chain for the NPs and heavy metal ions. Results indicated that the destabilization of colloid was induced by the coexisting HA and higher removal was achieved as ions adsorption was enhance in the presence of HA complexation. On the basis of that, the extraction of polysaccharide is a promising candidate for its high coagulation performance in water treatment.

Keywords： Algal Extraction     Enteromorpha polysaccharide     <sup>1sup>H-<sup>13sup>C nuclear magnetic resonance    

HTML PDF Collect

Study on Algorithm A<sup>*sup> Based on Dynamic Representation of Binary Tree for Environment and Robotic

Tang Ping,Yang Yimin

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 50-53

Abstract: A new algorithm A<sup>*sup> , which plans the path of soccer robots in complicated environments is

Keywords： dynamic binary-tree     algorithm A<sup>*sup>     path planning    

HTML PDF Collect

Clinical significance of CD34<sup>+sup>CD117<sup>dimsup>/CD34<sup>+sup>CD117<sup>brisup> myeloblast-associated

Xueping Li, Yuting Dai, Bing Chen, Jinyan Huang, Saijuan Chen, Lu Jiang

Frontiers of Medicine 2021, Volume 15, Issue 4,   Pages 608-620 doi: 10.1007/s11684-021-0836-7

Abstract: t(8;21)(q22;q22) acute myeloid leukemia (AML) is a highly heterogeneous hematological malignancy with a high relapse rate in China. Two leukemic myeloblast populations (CD34 CD117 and CD34 CD117 ) were previously identified in t(8;21) AML, and CD34 CD117 cell proportion was determined as an independent factor for this disease outcome. Here, we examined the impact of CD34 CD117 /CD34 CD117 myeloblast-associated gene expression on t(8;21) AML clinical prognosis. In this study, 85 patients with t(8;21) AML were enrolled. The mRNA expression levels of CD34 CD117 -associated genes ( , , and ) and CD34 CD117 -associated genes ( , , and ) were measured using quantitative reverse transcription PCR. Associations between gene expression and clinical outcomes were determined using Cox regression models. Results showed that patients with high , , or expression had significantly inferior overall survival (OS), whereas those with high or expression showed relatively favorable prognosis. Univariate analysis revealed that CD19, CD34 CD117 proportion, mutation, minimal residual disease (MRD), and expression levels of , , , and were associated with OS. Multivariate analysis indicated that mutation, MRD and and expression levels were independent prognostic variables for OS. Identifying the clinical relevance of CD34 CD117 /CD34 CD117 myeloblast-associated gene expression may provide new clinically prognostic markers for t(8;21) AML.

Keywords： t(8     21)(q22     q22) AML     CD34<sup>+sup>CD117<sup>dimsup>/ CD34<sup>+sup>CD117<sup>brisup> cell population    

HTML PDF Collect

K<sup>+sup> and Na<sup>+sup> fluxes in roots of two Chinese Iris populations

Pinfang LI,Biao ZHANG

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 2,   Pages 144-149 doi: 10.15302/J-FASE-2014016

Abstract: Maintenance of ion homeostasis, particularly the regulation of K and Na uptake, is important for all plants to adapt to salinity. Observations on ionic response to salinity and net fluxes of K , Na in the root exhibited by plants during salt stress have highlighted the need for further investigation. The objectives of this study were to compare salt adaptation of two Chinese Iris ( Pall. var. (Fisch.) Koidz.) populations, and to improve understanding of adaptation to salinity exhibited by plants. Plants used in this study were grown from seeds collected in the Xinjiang Uygur Autonomous Region (Xj) and Beijing Municipality (Bj), China. Hydroponically-grown seedlings of the two populations were supplied with nutrient solutions containing 0.1 (control) and 140 mmol·L NaCl. After 12 days, plants were harvested for determination of relative growth rate and K , Na concentrations. Net fluxes of K , Na from the apex and along the root axis to 10.8 mm were measured using non-invasive micro-test technique. With 140 mmol·L NaCl treatment, shoots for population Xj had larger relative growth rate and higher K concentration than shoots for population Bj. However, the Na concentrations in both shoots and roots were lower for Xj than those for Bj. There was a lower net efflux of K found in population Xj than by Bj in the mature zone (approximately 2.4-10.8 mm from root tip). However, no difference in the efflux of Na between the populations was obtained. Population Xj of continued to grow normally under NaCl stress, and maintained a higher K /Na ratio in the shoots. These traits, which were associated with lower K leakage, help population Xj adapt to saline environments.

Keywords： Koidz     population     K<sup>+sup> and Na<sup>+sup>     ion flux     non-invasive micro-test technique    

HTML PDF Collect

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0860-z

Abstract: A bio-electrochemical fuel cell reactor with cathodic Fe /TiO generates electricity. It destroys recalcitrant pollutants in cathode chamber without photocatalysis. Fe /TiO generates reactive oxygenated species in the dark or under photocatalysis. Cathodic produced ROS (hydroxy radical/superoxide radical) can degrade tetracycline or dyes. Electricity generation is enhanced by semiconductor catalyzed cathodic degradation of pollutants. In this study, a new water treatment system that couples (photo-) electrochemical catalysis (PEC or EC) in a microbial fuel cell (MFC) was configured using a stainless-steel (SS) cathode coated with Fe /TiO . We examined the destruction of methylene blue (MB) and tetracycline. Fe /TiO was prepared using a chemical reduction-deposition method and coated onto an SS wire mesh (500 mesh) using a sol technique. The anode generates electricity using microbes (bio-anode). Connected via wire and ohmic resistance, the system requires a short reaction time and operates at a low cost by effectively removing 94% MB (initial concentration 20 mg·L ) and 83% TOC/TOC under visible light illumination (50 W; 1.99 mW·cm for 120 min, MFC-PEC). The removal was similar even without light irradiation (MFC-EC). The of the MFC-PEC system was approximately 0.675 kWh·m ·order , whereas that of the MFC-EC system was zero. The system was able to remove 70% COD in tetracycline solution (initial tetracycline concentration 100 mg·L ) after 120 min of visible light illumination; without light, the removal was 15% lower. The destruction of MB and tetracycline in both traditional photocatalysis and photoelectrocatalysis systems was notably low. The electron spin-resonance spectroscopy (ESR) study demonstrated that ·OH was formed under visible light, and ·O was formed without light. The bio-electricity-activated O and ROS (reactive oxidizing species) generation by Fe /TiO effectively degraded the pollutants. This cathodic degradation improved the electricity generation by accepting and consuming more electrons from the bio-anode.

Keywords： Bio-anode     Photocatalytic cathode     Fe<sup>0sup>/TiO2     ESR     Dye and antibiotics     Advanced oxidation    

HTML PDF Collect

Application of Fe

Xiaowei ZHANG,Qinyan YUE,Dongting YUE,Baoyu GAO,Xiaojuan WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 402-410 doi: 10.1007/s11783-014-0659-8

Abstract: In this study, Fe /C/Clay ceramics, a kind of novel micro-electrolysis filler, were sintered and employedContinuous running tests showed that improvement of micro-electrolysis system with Fe /C/Clay ceramics

Keywords： Fe<sup>0sup>/C/Clay ceramics     micro-electrolysis     Acid Red 73     Reactive Blue 4     synthetic wastewater    

HTML PDF Collect

Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1674-4

Abstract:

● Simultaneous NH4<sup>+sup>/NO3<sup>–sup

Keywords： Anammox     Denitrification     FeS     NH4<sup>+sup>/NO3<sup>−sup>     Sulfammox    

HTML PDF Collect

Selective recovery of Cu

Haiping LUO,Bangyu QIN,Guangli LIU,Renduo ZHANG,Yabo TANG,Yanping HOU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 522-527 doi: 10.1007/s11783-014-0633-5

Abstract: As the bioelectrochemical system, the microbial fuel cell (MFC) and the microbial electrolysis cell (MEC) were developed to selectively recover Cu and Ni ions from wastewater. The wastewater was treated in the cathode chambers of the system, in which Cu and Ni ions were removed by using the MFC and the MEC, respectively. At an initial Cu concentration of 500 mg·L , removal efficiencies of Cu increased from 97.0%±1.8% to 99.0%±0.3% with the initial Ni concentrations from 250 to 1000 mg·L , and maximum power densities increased from 3.1±0.5 to 5.4±0.6 W·m . The Ni removal mass in the MEC increased from 6.8±0.2 to 20.5±1.5 mg with the increase of Ni concentrations. At an initial Ni concentration of 500 mg·L , Cu removal efficiencies decreased from 99.1%±0.3% to 74.2%±3.8% with the initial Cu concentrations from 250 to 1000 mg·L , and maximum power densities increased from 3.0±0.1 to 6.3±1.2 W·m . Subsequently, the Ni removal efficiencies decreased from 96.9%±3.1% to 73.3%±5.4%. The results clearly demonstrated the feasibility of selective recovery of Cu and Ni from the wastewater using the bioelectrochemical system.

Keywords： bioelectrochemical system     Cu<sup>2+sup>     Ni<sup>2+sup>     selective recovery    

HTML PDF Collect

Advances of 12<sup>thsup> CAPS research symposium: young chemists and chemical engineers fronts

Guoping Hu, Baiqian Dai

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 461-463 doi: 10.1007/s11705-020-2026-6

HTML PDF Collect

Effects of ancillary ligands in acceptorless benzyl alcohol dehydrogenation mediated by phosphine-free cobalt complexes

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 314-325 doi: 10.1007/s11705-022-2219-2

Abstract: Herein, we synthesized a phosphine-free η<sup>5sup>-C5Me5-Co complex by usingThe improved performance among the class of η<sup>5sup>-C5Me5-Co complexes could>5sup>-C5Me5-Co complexes by a set of characterizations.The results showed that the redox-active ligand has a significant influence on the η<sup>5sup>-Csup>5sup>-C5Me5 ligand played

Keywords： acceptorless alcohol dehydrogenation     η<sup>5sup>-C5Me5-Co     metal–ligand cooperation    

HTML PDF Collect

RNA m<sup>6sup>A modification and its function in diseases

Jiyu Tong, Richard A. Flavell, Hua-Bing Li

Frontiers of Medicine 2018, Volume 12, Issue 4,   Pages 481-489 doi: 10.1007/s11684-018-0654-8

Abstract:

N<sup>6sup>-methyladenosine (m<sup>6sup>A) is the most common post-transcriptional RNAsup>A modification could be installed by m<sup>6sup>A “writers” composed of core catalyticThe function of m<sup>6sup>A is executed by m<sup>6sup>A “readers” that bind to m<supHowever, the mechanism and the regulatory network of m<sup>6sup>A are still largely unknown.Moreover, investigations of the m<sup>6sup>A physiological roles in human diseases are limited.

Keywords： RNA modification     m<sup>6sup>A     immunity     cancer     epigenetics    

HTML PDF Collect

Title Author Date Type Operation

Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (

Sofiya K. MUHABA, Felix D. DAKORA

Journal Article

Precipitation study of CO

Siming Chen, Yue Wu, Geoffrey W. Stevens, Guoping Hu, Wenshou Sun, Kathryn A. Mumford

Journal Article

Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Journal Article

Solvability and thermal response of cellulose with different crystal configurations

Qian CHEN, Kai ZHENG, Qingtao FAN, Kun WANG, Haiyan YANG, Jianxin JIANG, Shijie LIU

Journal Article

Application and mechanism of polysaccharide extracted from Enteromorpha to remove nano-ZnO and humic acid in coagulation process

Jianzhang Sun, Baoyu Gao, Yuanxia Luo, Moxi Xue, Xing Xu, Qinyan Yue, Yan Wang

Journal Article

Study on Algorithm A<sup>*sup> Based on Dynamic Representation of Binary Tree for Environment and Robotic

Tang Ping,Yang Yimin

Journal Article

Clinical significance of CD34<sup>+sup>CD117<sup>dimsup>/CD34<sup>+sup>CD117<sup>brisup> myeloblast-associated

Xueping Li, Yuting Dai, Bing Chen, Jinyan Huang, Saijuan Chen, Lu Jiang

Journal Article

K<sup>+sup> and Na<sup>+sup> fluxes in roots of two Chinese Iris populations

Pinfang LI,Biao ZHANG

Journal Article

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Journal Article

Application of Fe

Xiaowei ZHANG,Qinyan YUE,Dongting YUE,Baoyu GAO,Xiaojuan WANG

Journal Article

Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Journal Article

Selective recovery of Cu

Haiping LUO,Bangyu QIN,Guangli LIU,Renduo ZHANG,Yabo TANG,Yanping HOU

Journal Article

Advances of 12<sup>thsup> CAPS research symposium: young chemists and chemical engineers fronts

Guoping Hu, Baiqian Dai

Journal Article

Effects of ancillary ligands in acceptorless benzyl alcohol dehydrogenation mediated by phosphine-free cobalt complexes

Journal Article

RNA m<sup>6sup>A modification and its function in diseases

Jiyu Tong, Richard A. Flavell, Hua-Bing Li

Journal Article