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NICE’s Indirect Coal-to-Liquid Process for Producing Clean Transportation Fuels Using Fischer-Tropsch Synthesis

Omar M. Basha,Li Weng,Zhuo-wu Men,Wayne Xu,Badie I. Morsi

Frontiers of Engineering Management 2016, Volume 3, Issue 4, Pages 362-376 doi: 10.15302/J-FEM-2016049

Abstract: of the performance of the NICE SBCR, operating with iron and cobalt catalysts under four different tailgas recycle strategies: (1) direct recycle; (2) using a Pressure Swing Adsorption (PSA) unit; (3) using

Keywords： Fischer-Tropsch synthesis tail gas recycle simulations process design

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Influence of entrainer recycle for batch heteroazeotropic distillation

Laszlo Hegely, Peter Lang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4, Pages 643-659 doi: 10.1007/s11705-018-1760-5

Abstract:

Dehydration of isopropanol applying batch heteroazeotropic distillation with toluene as entrainer (E) is investigated. The composition of the feed is near to that of the isopropanol (A)-water (B) azeotrope. The effects of recycling the entrainer and the off-cut are studied by dynamic simulation with a professional flow-sheet simulator. Three consecutive batches (one production cycle) is studied. Both operational modes (Mode I: decantation after distillation and Mode II: decantation during distillation) are simulated. For Mode II, calculations are performed both for Strategy A (distillate from the aqueous (E-lean) phase only) and Strategy B (partial withdrawal of the organic (E-rich phase), as well). The E-rich phase, the final column hold-up and the off-cut (Mode II only) are recycled to the next batch. The influence of the following parameters are determined: quantity of entrainer, reflux ratios of the steps. The variations caused by the recycling in the 2^nd and 3^rd batches are also shown. The best results (lowest specific energy demand and highest recovery of A) are obtained by Mode II, Strategy A. Recycling increases the recovery, and drastically diminishes the entrainer consumption. However, it makes the production slower and decreases the quantity of fresh feed that can be processed.

Keywords： batch distillation heteroazeotropic distillation operational policies off-cut recycle entrainer

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An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3, Pages 362-371 doi: 10.1007/s11705-011-1106-z

Abstract: The effect of the H S concentration, the H S/CO ratio, the input air flow rate, the acid gas flow ofthe acid gas (AG) splitter and the temperature of the acid gas feed at three different oxygen concentrationsAlso the effects of the tail gas ratio and the catalytic bed type on the sulfur recovery were studiedThe bed temperatures were optimized in order to enhance the sulfur recovery for a given acid gas feedThe optimal catalytic bed temperature, tail gas ratio and type of catalytic bed were also determined

Keywords： Claus unit concentration of H₂S tail gas ratio sulfur recovery catalytic bed

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Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

Frontiers of Medicine 2020, Volume 14, Issue 3, Pages 251-261 doi: 10.1007/s11684-019-0727-3

Abstract: Postoperative pancreatic fistula (POPF) is the most common and critical complication after pancreatic body and tail

Keywords： pancreatic fistula pancreatic body and tail resection distal pancreatectomy

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The impact of government incentives and penalties on willingness to recycle plastic waste: An evolutionary

Zhen Wang, Jiazhen Huo, Yongrui Duan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1208-2

Abstract: • Punishments increase the participation probability of collectors and recyclers. • Policy-sponsored incentives make collectors and recyclers to participate earlier. • Recyclers are more sensitive to government punishments than collectors. Because governments have introduced policies involving incentives and penalties to promote the recycling of plastic waste, it is important to understand the impact of such incentives and penalties on the willingness of stakeholders to participate. In this study, government is included as a player, alongside waste collectors and recyclers, in a tripartite evolutionary game model of plastic waste recycling. The study explores the evolutionary equilibrium and performs a simulation analysis to elucidate the effect of government incentives and penalties on the willingness of other players to participate in recycling. Three conclusions are drawn from this research. First, an increase in incentives or in penalties increases the probability that collectors and recyclers will participate in the recycling process. Second, policy support incentives encourage collectors and recyclers to participate in plastic waste recycling earlier than subsidy incentives do. Finally, recyclers are more sensitive than collectors to government-imposed penalties.

Keywords： Plastic waste Recycle Reuse Government incentives Government penalties Evolutionary game

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Roles of integrin β3 cytoplasmic tail in bidirectional signal transduction in a trans-dominant inhibition

Jiansong Huang,Yulan Zhou,Xiaoyu Su,Yuanjing Lyu,Lanlan Tao,Xiaofeng Shi,Ping Liu,Zhangbiao Long,Zheng Ruan,Bing Xiao,Wenda Xi,Quansheng Zhou,Jianhua Mao,Xiaodong Xi

Frontiers of Medicine 2016, Volume 10, Issue 3, Pages 311-319 doi: 10.1007/s11684-016-0460-0

Abstract:

We evaluated the roles of calpain cleavage-related mutations of the integrin β3 cytoplasmic tail

Keywords： integrin β3 signal transduction trans-dominant inhibition model

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Head-to-tail cyclization of a heptapeptide eliminates its cytotoxicity and significantly increases its

Shuai Ma, Huan Zhang, Xiaoyan Dong, Linling Yu, Jie Zheng, Yan Sun

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2, Pages 283-295 doi: 10.1007/s11705-017-1687-2

Abstract: Herein, we modified LK7 by a head-to-tail cyclization and obtained a cyclic LK7 (cLK7). cLK7 exhibits

Keywords： Alzheimer’s disease amyloid β-protein cyclic peptide inhibition protein aggregation

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ShortTail: taming tail latency for erasure-code-based in-memory systems Research Article

Yun TENG, Zhiyue LI, Jing HUANG, Guangyan ZHANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 11, Pages 1646-1657 doi: 10.1631/FITEE.2100566

Abstract:

s with erasure coding (EC) enabled are widely used to achieve high performance and data availability. However, as the scale of clusters grows, the server-level fail-slow problem is becoming increasingly frequent, which can create long . The influence of long is further amplified in EC-based systems due to the synchronous nature of multiple EC sub-operations. In this paper, we propose an EC-enabled in-memory storage system called ShortTail, which can achieve consistent performance and low latency for both reads and writes. First, ShortTail uses a lightweight request monitor to track the performance of each memory node and identify any fail-slow node. Second, ShortTail selectively performs degraded reads and redirected writes to avoid accessing fail-slow nodes. Finally, ShortTail posts an adaptive write strategy to reduce write amplification of s. We implement ShortTail on top of Memcached and compare it with two baseline systems. The experimental results show that ShortTail can reduce the P99 by up to 63.77%; it also brings significant improvements in the median latency and average latency.

Keywords： Erasure code In-memory system Node fail-slow Small write Tail latency

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Removal of P₄, PH₃ and H₂S from Yellow Phosphoric Tail Gas by a Catalytic

Ning Ping,Hans-Jörg Bart,Wang Xueqian,Ma Liping,Chen Liang

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 27-35

Abstract:

Yellow phosphorus tail gas is a resource to produce bulk chemicals, such as formate, oxalate, methanolIn this study, catalytic oxidation of phosphorus and hydrogen sulfide in yellow phosphorus tail gas wasefficiency increases with the increase of temperature and oxygen concentration in yellow phosphorus tailUnder optimized operation conditions the product gas with a content of hydrogen sulfide ＜5 mg/m³

Keywords： catalyst catalytic oxidation H₂S P₄ PH₃ fixed bed

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Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4, Pages 419-428 doi: 10.1007/s11709-013-0224-8

Abstract: With increasing environmental pressure to reduce solid waste and to recycle as much as possible, the

Keywords： Self Compacting Concrete (SCC) recycle glass fine aggregate fresh and hardened properties

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-Cyclodextrin functionalized graphene oxide: an efficient and recyclable adsorbent for the removal of dye pollutants

Shanshan WANG, Yang LI, Xiaobin FAN, Fengbao ZHANG, Guoliang ZHANG

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1, Pages 77-83 doi: 10.1007/s11705-014-1450-x

Abstract: A novel method for the preparation of -cyclodextrin grafted graphene oxide (GO- -CD) has been developed. The GO- -CD was characterized by Fourier transform infrared spectroscopy, C NMR spectroscopy, Raman spectroscopy and thermogravimetric analysis. The ability of GO- -CD to remove fuchsin acid from solution was also studied. The GO- -CD had an excellent adsorption capacity for fuchsin acid and could be recycled and reused. The adsorption capacities of GO- -CD for other dye pollutants such as methyl orange and methylene blue were also investigated. The absorption capacities for the three dyes are in the order: fuchsin acid>methylene blue>methyl orange.

Keywords： graphene oxide β-cyclodextrin adsorption capacity recycle

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Prevention and Control of Waste Plastics Pollution in China

Wang Qi, Qu Jinping, Shi Bi, Chen Ning, Nie Min, Yang Shuangqiao

Strategic Study of CAE 2021, Volume 23, Issue 1, Pages 160-166 doi: 10.15302/J-SSCAE-2021.01.020

Abstract:

Prevention and control of waste plastics is an important component of the national strategy in China. In this study, the sources as well as the current situation and measures for recycling of waste plastics in China were comprehensively analyzed. We proposed an all-rounded tactic for the prevention and control of plastic pollution in China based on the life-cycle assessment of plastics. Technically, waste plastic pollution should be prevented and controlled throughout the entire process covering plastic synthesis, processing, utilization, and recycling; specifically, it includes reduction of waste plastics from the origin by developing new degradable raw materials and their environmentally friendly alternatives, design and processing of high-performance plastic products with extended service life, development of new technologies offering efficient and large-scale capacity for recycling waste plastics, as well as safe disposal of the ultimate plastic wastes. At the government level, policy guidance must be strengthened, and administrative supervision be implemented. At the enterprise level, an effective recycling system should be instituted to clarify recycling responsibilities of producers, sellers, and consumers, providing policy and technical suggestions for the prevention and control of waste plastics. At the public level, citizens’ environmental awareness must be aroused to promote a nationwide participation in waste management. These suggestions are favorable to a more green and sustainable development of China’s plastic industry and even national economy.

Keywords： waste plastic environmental pollution prevention and control recycle full-chain management

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Repeated batch fermentation with water recycling and cell separation for microbial lipid production

Yumei WANG, Wei LIU, Jie BAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4, Pages 453-460 doi: 10.1007/s11705-012-1210-8

Abstract: Large waste water disposal was the major problem in microbial lipid fermentation because of low yield of lipid. In this study, the repeated batch fermentation was investigated for reducing waste water generated in the lipid fermentation of an oleaginous yeast CX1 strain. The waste fermentation broth was recycled in the next batch operation after the cells were separated using two different methods, centrifugation and flocculation. Two different sugar substrates, glucose and inulin, were applied to the proposed operation. The result showed that at least 70% of the waste water was reduced, while lipid production maintained satisfactory in the initial four cycles. Furthermore, it is suggested that CX1 cells might produce certain naturally occurring inulin hydrolyzing enzyme(s) for obtaining fructose and glucose from inulin directly. Our method provided a practical option for reducing the waste water generated from microbial lipid fermentation.

Keywords： batch fermentation microbial lipid Trichosporon cutaneum CX1 flocculation waste water recycle

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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Frontiers in Energy 2023, Volume 17, Issue 3, Pages 428-445 doi: 10.1007/s11708-023-0865-9

Abstract: flooding tests were conducted to investigate the performance of injecting different gases to enhance shale gasIn addition, when the CO₂ concentration in the mixed gas exceeded 50%, the adsorption capacityof the mixed gas was greater than that of CH₄, and had a strong competitive adsorption effectFor the core flooding tests, pure gas injection showed that the breakthrough time of CO₂ wasmn>4 of CO₂ gas

Keywords： shale gas gas injection competitive adsorption enhanced shale gas recovery CO₂ geological

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A novel methodology for forecasting gas supply reliability of natural gas pipeline systems

Feng CHEN, Changchun WU

Frontiers in Energy 2020, Volume 14, Issue 2, Pages 213-223 doi: 10.1007/s11708-020-0672-5

Abstract: In this paper, a novel systematic and integrated methodology to assess gas supply reliability is proposedThe result of the gas pipeline system calculated is the average gas supply reliability in each typicalTo verify the feasibility, the method proposed is applied for a real natural gas pipelines network systemThe comparison of the results calculated and the actual gas supply reliability based on the filed datathe gas supply reliability from two dimensions of quantity and time.

Keywords： natural gas pipeline system gas supply reliability evaluation index Monte Carlo method hydraulic simulation

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Title Author Date Type Operation

NICE’s Indirect Coal-to-Liquid Process for Producing Clean Transportation Fuels Using Fischer-Tropsch Synthesis

Omar M. Basha,Li Weng,Zhuo-wu Men,Wayne Xu,Badie I. Morsi

Journal Article

Influence of entrainer recycle for batch heteroazeotropic distillation

Laszlo Hegely, Peter Lang

Journal Article

An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Journal Article

Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

Journal Article

The impact of government incentives and penalties on willingness to recycle plastic waste: An evolutionary

Zhen Wang, Jiazhen Huo, Yongrui Duan

Journal Article

Roles of integrin β3 cytoplasmic tail in bidirectional signal transduction in a trans-dominant inhibition

Jiansong Huang,Yulan Zhou,Xiaoyu Su,Yuanjing Lyu,Lanlan Tao,Xiaofeng Shi,Ping Liu,Zhangbiao Long,Zheng Ruan,Bing Xiao,Wenda Xi,Quansheng Zhou,Jianhua Mao,Xiaodong Xi

Journal Article

Head-to-tail cyclization of a heptapeptide eliminates its cytotoxicity and significantly increases its

Shuai Ma, Huan Zhang, Xiaoyan Dong, Linling Yu, Jie Zheng, Yan Sun

Journal Article

ShortTail: taming tail latency for erasure-code-based in-memory systems

Yun TENG, Zhiyue LI, Jing HUANG, Guangyan ZHANG

Journal Article

Removal of P₄, PH₃ and H₂S from Yellow Phosphoric Tail Gas by a Catalytic

Ning Ping,Hans-Jörg Bart,Wang Xueqian,Ma Liping,Chen Liang

Journal Article

Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI