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Effect of streambed substrate on macroinvertebrate biodiversity

DUAN Xuehua, WANG Zhaoyin, TIAN Shimin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 122-128 doi: 10.1007/s11783-008-0023-y

Abstract: Numerous studies have shown that substrate is the primary physical environmental variable affecting theThe aim of this work is to study the effects of the characteristics of streambed substrate, such as grainassemblage is significantly affected by the grain size, porosity and interstitial dimension of the substrate

Keywords： Substrata     physical environmental     indicator     ecology     substrate    

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Aerobic granular sludge formation based on substrate availability: Effects of flow pattern and fermentation

Quan Yuan, Hui Gong, Hao Xi, Kaijun Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1226-0

Abstract: Penetration depth and substrate characters affect AGS formation and performance.The relationship between substrate gradient and particle size affects AGS stability.and plug-flow) and fermentation pretreatment on aerobic granular sludge (AGS) formation with various substrate

Keywords： Anaerobic plug-flow feeding mode     Anaerobic mixed-flow mode     Fermentation pretreatment     Substrate gradient    

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V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1578-8

Abstract:

● V-shaped substrate was obtained for SERS analysis of microplastics

Keywords： SERS     V-shaped     AAO     Microplastic     Atmospheric aerosol    

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Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 294-300 doi: 10.1007/s11465-015-0351-0

Abstract: Several samples fabricated with aluminum as the substrate and 100MXC nanowire (Fe and Cr alloy) as theAn example of a turbine-blade-shaped substrate is presented to validate the approach.

Keywords： in-plane     Young’s modulus     curvature temperature     thermal stress     coating    

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Crk-associated substrate, vascular smooth muscle and hypertension

TANG Dale

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 323-331 doi: 10.1007/s11684-008-0062-6

Abstract: Crk-associated substrate (CAS), the first discovered member of the adapter protein CAS family, has been

Keywords： Contraction stimulation     phosphatase-proline     molecular structure     discovered     hypertension    

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Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 448-464 doi: 10.1007/s11705-017-1611-9

Abstract: Perchlorate has recently emerged as a widespread environmental contaminant of healthy concern. Development of novel detection methods for perchlorate with the potential for field use has been an urgent need. The investigation has shown that surface-enhanced Raman scattering (SERS) technique has great potential to become a practical analysis tool for the rapid screening and routine monitoring of perchlorate in the field, particularly when coupled with portable/handheld Raman spectrometers. In this review article, we summarize progress made in SERS analysis of perchlorate in water and other media with an emphasis on the development of SERS substrates for perchlorate detection. The potential of this technique for fast screening and field testing of perchlorate-contaminated environmental samples is discussed. The challenges and possible solutions are also addressed, aiming to provide a better understanding on the development directions in the research field.

Keywords： perchlorate     SERS     detection     substrate     modification     nanostructure    

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Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 303-318 doi: 10.1007/s11465-019-0562-x

Abstract: This study explores the feasibility of different laser systems to sinter screen-printed lines from nonconductive copper nanoparticles (Cu NPs) on polyethylene terephthalate polymer film. These materials are commonly used in manufacturing functional printed electronics for large-area applications. Here, optical and thermal characterization of the materials is conducted to identify suitable laser sources and process conditions. Direct diode (808 nm), Nd:YAG (1064 nm and second harmonic of 532 nm), and ytterbium fiber (1070 nm) lasers are explored. Optimal parameters for sintering the Cu NPs are identified for each laser system, which targets low resistivity and high processing speed. Finally, the quality of the sintered tracks is quantified, and the laser sintering mechanisms observed under different wavelengths are analyzed. Practical considerations are discussed to improve the laser sintering process of Cu NPs.

Keywords： laser sintering     copper nanoparticles     printed electronics    

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Dewatering of Scenedesmus Obliquus Cultivation Substrate with Microfiltration: Potential and Challenges

Marco Malaguti,Lorenzo Craveri,Francesco Ricceri,Vincenzo Riggio,Mariachiara Zanetti,Alberto Tiraferri,

Engineering doi: 10.1016/j.eng.2023.07.010

Abstract: In the microalgae harvesting process, which includes a step for dewatering the algal suspension, directly reusing extracted water in situ would decrease the freshwater footprint of cultivation systems. Among various algae harvesting techniques, membrane-based filtration has shown numerous advantages. This study evaluated the reuse of permeate streams derived from Scenedesmus obliquus (S. obliquus) biomass filtration under bench-scale and pilot-scale conditions. In particular, this study identified a series of challenges and mechanisms that influence the water reuse potential and the robustness of the membrane harvesting system. In a preliminary phase of this investigation, the health status of the initial biomass was found to have important implications for the harvesting performance and quality of the permeate stream to be reused; healthy biomass ensured better dewatering performance (i.e., higher water fluxes) and higher quality of the permeate water streams. A series of bench-scale filtration experiments with different combinations of cross-flow velocity and pressure values were performed to identify the operative conditions that would minimize energy requirements while maximizing water productivity. The optimal conditions, 2.2 m·s−1 and 1.4 bar (1 bar = 105 Pa), respectively, were then applied to drive pilot-scale microfiltration tests to reuse the collected permeate as a new cultivation medium for S. obliquus growth in a pilot-scale photo-bioreactor. The investigation revealed key differences between the behavior of the membrane systems at the two scales (bench and pilot). It indicated the potential for beneficial reuse of the permeate stream as the pilot-scale experiments ensured high harvesting performance and growth rates of biomass in permeate water that were highly similar to those recorded in the ideal cultivation medium. Finally, different nutrient reintegration protocols were investigated, revealing that both macro- and micronutrient levels are critical for the success of the reuse approach.

Keywords： Scenedesmus obliquus     Microfiltration     Permeate reuse     Harvesting     Microalgae     Pilot-scale    

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Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 784-791 doi: 10.1007/s11783-013-0590-4

Abstract: Renewable algae biomass, was used as substrate for generating electricity in two chamber microbialelectrode potential as a function of current generation suggested that anodic oxidation process of algae substrate

Keywords： microbial fuel cell (MFC)     algae     bioelectricity     substrate     volatile fatty acid     biomass     COD removal efficiency    

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Preparation of D-lysine by chemical reaction and microbial asymmetric transformation

LIU Yi, JIAO Qingcai, YIN Xiaoxing

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 40-43 doi: 10.1007/s11705-008-0023-2

Abstract: The DL-lysine crystals from the racemization of L-lysine was treated as substrate with AS1.1009 intactUnder the conditions of pH 8.0, temperature 37°C, cell concentration 10 g/L, tween-80 0.5 g/L, substrate

Keywords： substrate     temperature     specific activity     presence     decarboxylase    

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and nitrate removal from secondary effluent in constructed wetlands using a new manganese-containing substrate

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1807-4

Abstract:

● MnO2/PCL composite material (MPCM) enhances ammonia and nitrate removal in CWs.

Keywords： Constructed wetland     Nitrogen removal     Manganese redox     Polycaprolactone     Nitrous oxide    

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Thin-film composite forward osmosis membranes with substrate layer composed of polysulfone blended with

Baicang Liu,Chen Chen,Pingju Zhao,Tong Li,Caihong Liu,Qingyuan Wang,Yongsheng Chen,John Crittenden

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 562-574 doi: 10.1007/s11705-016-1588-9

Abstract: PSf blended with PEG or PSf-g-PEGMA was used to form a substrate layer, and then polyamide was formed

Keywords： thin-film composite     forward osmosis     amphiphilic copolymer     interfacial polymerization     poly(ethylene glycol)    

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β-Cyclodextrin promoted oxidation of primary amines to nitriles in water

Dongpo SHI, Hongbing JI, Zhong LI

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 196-200 doi: 10.1007/s11705-009-0051-6

Abstract: A facile, efficient and substrate-selective oxidation of the primary amines with NaClO as oxidant catalyzed

Keywords： substrate-selective     amines oxidation     β-cyclodextrin    

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Performance analysis of piezoelectric bimorph generator

KAN Junwu, TANG Kehong, ZHAO Hongwei, SHAO Chenghui, ZHU Guoren

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 151-157 doi: 10.1007/s11465-008-0039-9

Abstract: The generator consists of two piezoelectric plates bonded on a substrate metal plate.

Keywords： piezoelectric bimorph     substrate     addition     PZT     mechanical    

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Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange resins

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 462-467 doi: 10.1007/s11705-009-0011-1

Abstract: resin were prepared through dry-wet spinning process, using hydrophilic copolymer EVAL as the fiber substrate

Keywords： substrate     copolymer EVAL     exchange     EVAL hollow     resin-filled content    

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Title Author Date Type Operation

Effect of streambed substrate on macroinvertebrate biodiversity

DUAN Xuehua, WANG Zhaoyin, TIAN Shimin

Journal Article

Aerobic granular sludge formation based on substrate availability: Effects of flow pattern and fermentation

Quan Yuan, Hui Gong, Hao Xi, Kaijun Wang

Journal Article

V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Journal Article

Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Journal Article

Crk-associated substrate, vascular smooth muscle and hypertension

TANG Dale

Journal Article

Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Journal Article

Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths

Juan Carlos HERNANDEZ-CASTANEDA, Boon Keng LOK, Hongyu ZHENG

Journal Article

Dewatering of Scenedesmus Obliquus Cultivation Substrate with Microfiltration: Potential and Challenges

Marco Malaguti,Lorenzo Craveri,Francesco Ricceri,Vincenzo Riggio,Mariachiara Zanetti,Alberto Tiraferri,

Journal Article

Microalgae

Sanath KONDAVEETI,Kwang Soon CHOI,Ramesh KAKARLA,Booki MIN

Journal Article

Preparation of D-lysine by chemical reaction and microbial asymmetric transformation

LIU Yi, JIAO Qingcai, YIN Xiaoxing

Journal Article

and nitrate removal from secondary effluent in constructed wetlands using a new manganese-containing substrate

Journal Article

Thin-film composite forward osmosis membranes with substrate layer composed of polysulfone blended with

Baicang Liu,Chen Chen,Pingju Zhao,Tong Li,Caihong Liu,Qingyuan Wang,Yongsheng Chen,John Crittenden

Journal Article

β-Cyclodextrin promoted oxidation of primary amines to nitriles in water

Dongpo SHI, Hongbing JI, Zhong LI

Journal Article

Performance analysis of piezoelectric bimorph generator

KAN Junwu, TANG Kehong, ZHAO Hongwei, SHAO Chenghui, ZHU Guoren

Journal Article

Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange resins

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Journal Article