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research on the mixed sand ratio and initial dry density of weathered sand improved expansive soil freeload swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Strategic Study of CAE 2014, Volume 16, Issue 2,   Pages 73-78

Abstract:

Through the indoor free load swelling rate test，Yichang City，a section of a highway reconstructionKey analysis free load swelling rate of a non-load time，the proportion of mixed sand，the relationshipbetween the initial dry density， experimental studies have shown that：Free load swelling rate is mainlyfirst lower，weathered sand soil modified free load swelling rate is not sensitive to the amount of sandmixed；in the same mixed sand ratio， weathered sand soil free load swelling rate increases with increasing

Keywords： expansive soils     weathered sand     initial dry density     mixing sand ratio     free load swelling rate    

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Preparation of polysulfone-based block copolymer ultrafiltration membranes by selective swelling and

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 745-754 doi: 10.1007/s11705-021-2038-x

Abstract: Selective swelling of block copolymers of polysulfone-b-poly(ethylene glycol) is an emerging strategyprepared nanoporous polysulfone-b-poly(ethylene glycol) ultrafiltration membranes by selective swellingSelective swelling was performed on the obtained block copolymer structures in the solvent pair of ethanol

Keywords： block copolymers     selective swelling     ultrafiltration     CaCO3 nanoparticles     sacrificial nanofillers    

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Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 227-236 doi: 10.1007/s11708-012-0198-6

Abstract: The frequency of the power system varies based on the load pattern of the consumers.With continuous increase in the load, the frequency of the system keeps decreasing and may reach itsFurther increase in the load will result in more frequency drop leading to the need of load shedding,The load shedding steps were obtained based on the rate of change of frequency with the increase in theload in both areas.

Keywords： critical load     frequency response     load shedding     multi-area system     rate of change of frequency     superconducting    

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Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 90-102 doi: 10.1007/s11708-012-0224-8

Abstract: In order to avoid power system collapse, load shedding (LS) schemes are adopted with the optimal amountof load shed.paper proposed a methodology in a two-area thermal-thermal system for finding the required amount of loadThe LS steps have been obtained based on the rate of change of frequency with the increase in load in

Keywords： critical load     frequency response     load shedding (LS)     multi-area system     rate of change of frequency     linear    

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Modeling of coal swelling induced by water vapor adsorption

Zhejun PAN

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 94-103 doi: 10.1007/s11705-011-1172-2

Abstract: Gas adsorption-induced coal swelling is a well-know phenomenon.Coal swelling or shrinkage by adsorption or desorption of water vapor has not been well understood butIn this work, a model has been developed to describe the coal swelling strain with respect to the amountThe model extended an energy balance approach for gas adsorption-induced coal swelling to water vaporThe model is applied to describe the experimental swelling strain data measured on an Australian coal

Keywords： multilayer adsorption     vapour pressure     coal shrinkage     relative humidity     permeability    

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Short-term prediction of influent flow rate and ammonia concentration in municipal wastewater treatment

Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 128-136 doi: 10.1007/s11783-013-0598-9

Abstract: The prediction of the influent load is of great importance for the improvement of the control systemmethod is presented in this paper in order to estimate and predict the periodicity of the influent flow rateinfluence of the rainfalls, a linear fitting model is derived to estimate the relationship between flow ratein different cycles (especially cycles longer than 1 day); 2) when the flow rate and NH concentrationsperiodicity influence is larger than rainfalls; 4) the rainfalls will make the periodicity of flow rate

Keywords： influent load prediction     wavelet de-noising     power spectrum density     autoregressive model     time-frequency    

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Potential risk factors exposure and pregnant outcomes among women receiving free pre-pregnancy health

Che Yan,Zhou Gongwang,Wang Caiqin,Zhang Huanling,Zhang Jiane,Yan Lixin,Lu Zhen,Lu Mei,Shen Jie and Zhu Haoping

Strategic Study of CAE 2014, Volume 16, Issue 5,   Pages 56-59

Abstract: style="text-align: justify;">To provide evidence for effectiveness evaluation of the government project freeexamination through reporting exposure of potential risk factors of adverse pregnancy outcome and pregnancy rateThe cumulative pregnancy rate at 3 months and 6 months after free pre-pregnancy health examination was% and 45.0 %，respectively. 365 women completed the follow up about pregnancy outcomes.The incidence rateSince the 6-month cumulative pregnancy rate of women who had free pre- pregnancy health examination was

Keywords： free pre- pregnany health examination     pregnancy rate     cumulative pregnancy rate     adverse pregnancy outcome    

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Preparation and swelling properties of a starch-g-poly(acrylic acid)/organo-mordenite hydrogel composite

Yan Zhang,Pingqiang Gao,Lin Zhao,Yizhong Chen

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 147-161 doi: 10.1007/s11705-015-1546-y

Abstract: The swelling capacity of the hydrogel composite was evaluated in distilled water, and solutions withincorporation of 10 wt-% organo-mordenite enhanced the water absorbency by 144% (from 268 to 655 g·g ) and swellingSwelling kinetics and water diffusion mechanism of the hydrogel composite in distilled water were alsocycles and the hydrogel composite exhibited significant environmental-responsiveness by changing the swelling

Keywords： hydrogel composite     environmental-responsiveness     organo-mordenite     starch     acrylic acid    

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Biodegradable polymethacrylic acid grafted psyllium for controlled drug delivery systems

Ranvijay KUMAR, Kaushlendra SHARMA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 116-122 doi: 10.1007/s11705-013-1310-0

Abstract: Swelling and biodegradability studies of the tablets were carried out.In the acidic medium, the swelling was more than 1300%.

Keywords： psyllium     acetyl salicylic acid     in-vitro drug release     swelling     biodegradation    

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Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 472-485 doi: 10.1007/s11708-015-0373-7

Abstract: The composite load is a combination of the static and dynamic load model.To develop this composite load model, the exponential load is used as a static load model and inductionmotors (IMs) are used as a dynamic load model.This aggregate model is used as a dynamic load model.exponential model of static load and for the fifth and third order IM dynamic load model using state

Keywords： isolated hybrid power system (IHPS)     composite load model     static load     dynamic load     induction motor loadmodel     aggregate load    

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Cell-free systems in the new age of synthetic biology

Fernando Villarreal,Cheemeng Tan

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 58-65 doi: 10.1007/s11705-017-1610-x

Abstract: The advent of synthetic biology has ushered in new applications of cell-free transcription-translationThese cell-free systems are reconstituted using cellular proteins, and are amenable to modular controlHere, we discuss the historical advancement of cell-free systems, as well as their new applications inFinally, we present our vision on the future direction of cell-free synthetic biology.

Keywords： cell-free system     application    

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Recent advances in cycloaddition of CO with epoxides: halogen-free catalysis and mechanistic insights

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1879-1894 doi: 10.1007/s11705-023-2354-4

Abstract: To address these concerns, the halogen-free cycloaddition of CO2 with epoxides has alwaysIn this review, we systematically discussed the halogen-free catalysis for cycloaddition of CO2freeSpecially, metal oxides as the potential halogen-free catalysts are highlighted due to their flexible

Keywords： carbon dioxide     halogen-free catalysis     cyclic carbonate     mechanistic insight    

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Hollow carbon spheres and their noble metal-free hybrids in catalysis

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1380-1407 doi: 10.1007/s11705-021-2097-z

Abstract: Herein, we overview hollow carbon sphere-based materials and their noble metal-free hybrids in catalysiscontrolling pore structure and surface morphology, and then heterogeneous doping as well as their metal-free

Keywords： hollow carbon spheres     functionalization     noble metal-free     catalysis    

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Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 241-248 doi: 10.1007/s11465-011-0219-x

Abstract:

This paper presents a new calculation method that can calculate the load distribution on pipe threadedconnections under tension load.the new method on the sample of P-110S pipe threaded connection, the obtained results show that the loadThe model offers a new way to calculate the loads carried on the thread teeth under tension load.

Keywords： load distribution     calculation method     pipe threaded connections     tension load    

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Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1106-7

Abstract:

PFRs were produced on biochar during Cr(VI) decontamination.

PFRs formation on biochar was owing to the oxidization of phenolic-OH by Cr(VI).

Appearance of excessive oxidant led to the consumption of PFRs on biochar.

Biochar charred at high temperature possessed great performance to Cr(VI) removal.

Keywords： Biochar     Persistent free radicals     Phenolic hydroxyl groups     Cr(VI) reduction    

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Title Author Date Type Operation

research on the mixed sand ratio and initial dry density of weathered sand improved expansive soil freeload swelling rate

Yang Jun,Yang Zhi,Zhang Guodong,Tang Yunwei and Chen Hongping

Journal Article

Preparation of polysulfone-based block copolymer ultrafiltration membranes by selective swelling and

Journal Article

Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Modeling of coal swelling induced by water vapor adsorption

Zhejun PAN

Journal Article

Short-term prediction of influent flow rate and ammonia concentration in municipal wastewater treatment

Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON

Journal Article

Potential risk factors exposure and pregnant outcomes among women receiving free pre-pregnancy health

Che Yan,Zhou Gongwang,Wang Caiqin,Zhang Huanling,Zhang Jiane,Yan Lixin,Lu Zhen,Lu Mei,Shen Jie and Zhu Haoping

Journal Article

Preparation and swelling properties of a starch-g-poly(acrylic acid)/organo-mordenite hydrogel composite

Yan Zhang,Pingqiang Gao,Lin Zhao,Yizhong Chen

Journal Article

Biodegradable polymethacrylic acid grafted psyllium for controlled drug delivery systems

Ranvijay KUMAR, Kaushlendra SHARMA

Journal Article

Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Journal Article

Cell-free systems in the new age of synthetic biology

Fernando Villarreal,Cheemeng Tan

Journal Article

Recent advances in cycloaddition of CO with epoxides: halogen-free catalysis and mechanistic insights

Journal Article

Hollow carbon spheres and their noble metal-free hybrids in catalysis

Journal Article

Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Journal Article

Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Journal Article