Chinese︱Feedback︱Save this page

Login︱Register

• Elaborating Academic Views 　　　　 • Exchanging Innovative Ideas
• Protecting Intellectual Properties 　　• Fast Sharing Science Papers

Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China

Home > Papers > Chemical-Engineering

There are 22 papers published in subject: since this site started.

Results per page:

22 Total, 3 Pages | << First < Previous 1 2 3 Next > Last >>

Select Subject

All (8830)

Agronomy (158)

Animal Husbandry,... (64)

Aquatic Science (16)

Astronomy (36)

Aviation (22)

Basic Medicine (184)

Biology (504)

Chemical Engineering (103)

Chemistry (635)

Civil and Archite... (105)

Clinical Medicine (236)

Computer Science ... (924)

Dynamic and Elect... (121)

Earth Science (119)

Economics (67)

Education (31)

Electrics, Commun... (927)

Energy Science an... (67)

Engineering and T... (15)

Environmental Sci... (140)

Food Science and ... (63)

Forestry (36)

Hydraulic Enginee... (40)

Mechanics (240)

Metallurgical Eng... (32)

Mine Engineering ... (38)

Nuclear Science a... (21)

Pharmacy (98)

Physics (920)

Preventive Medici... (37)

Psychology (20)

Security Science ... (17)

Sports Science (6)

Surveying and Map... (15)

Textile Science a... (16)

Traditional Chine... (56)

Transportation En... (57)

Second-level Subject

Basic Subject of Chemical...(9)
Biochemical Engineering(11)
Chemical Machinery and Eq...(4)
Chemical Measurement Tech...(0)
Chemical Reaction Enginee...(21)
Chemical Separation Engin...(21)
Chemical System Engineering(5)
Chemical Transfer Process(1)
Coal Chemical Engineering(2)
Electrochemical Engineering(6)
Fine Chemical Engineering(1)
Fur and Leather Working T...(7)
Organic Chemical Engineering(2)
Other Subjects of Chemica...(2)
Paper Making Technology(1)
Petroleum Chemical Engine...(4)
Pharmaceutical Engineering(2)
Polymer Engineering(4)

Rank

Results per page:

22 Total, 3 Pages | << First < Previous 1 2 3 Next > Last >>

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.


	1. Quantitative Structure-Property Relationship (QSPR) Modeling of Drug-Loaded Polymeric Micelle via Genetic Function Approximation
	Wen Sheng Wu,Can Yang Zhang,Quan Chen,Wen Jing Lin,Xin Dong Guo,Yu Qian,Li Juan Zhang
	Chemical Engineering 30 April 2014
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:In this paper, we have developed the QSPR models about doxorubicin loading capacity of the four/six-arm star block polymer micelles using genetic function approximation (GFA) algorithm. The performances of the model, for example fitting ability, predictive ability, stability and generalization ability, have been confirmed by internal validation, external validation and Y- randomization test. The applicability domain of the optimization model also has been defined. The relationship of microstructure and drug loading capacity of polymeric micelles is analyzed. The QSPR model could be used to evaluate the drug loading capacity of polymeric micelles quantificationally, while simultaneously optimizing the design of formulation experiments.
	TO cite this article:Wen Sheng Wu,Can Yang Zhang,Quan Chen, et al. Quantitative Structure-Property Relationship (QSPR) Modeling of Drug-Loaded Polymeric Micelle via Genetic Function Approximation[OL].[30 April 2014] http://en.paper.edu.cn/en_releasepaper/content/4594601


	2. The roles of iron-based addtives on the formation of NH3 and HCN during brown coal pyrolysis
	FU Chunhui,WANG Meijun,REN Xiurong,CHANG Liping
	Chemical Engineering 18 June 2013
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Pyrolysis of a Chinese lignite with high organic sulfur has been studied with a fixed bed quartz reactor to examine the effects of iron-based additive on the release of NH3 and HCN. During the pyrolysis of this low rank coal, the yield of HCN is dramatically increased through demineralization by HCl/HF washing, the release amount of NH3 is slightly increased and the content of nitrogen in char nearly unchanged, indicating that the inherent minerals influence significantly the secondary reactions of volatiles rather than the breakage of nitrogen species with large ring structure in char. 3wt% Fe with different precursors was added to the raw and demineralized coal by mechanical mixing method, and the effect of iron additive on the nitrogen transferring routes during coal pyrolysis varies with the precursors of additive. Both the additions of ferric acetate and ferrous oxalate in coal with and without demineralization decrease the release of HCN apparently during pyrolysis due to catalyze the secondary reactions of volitiles. But the ferrous oxalate decreases also the yield of NH3, which should be because the carbon dioxide from the decomposition of oxalate groups in the heating process can be adsorbed on the active sites relative to nitrogen and hydrogen to restrain the combination of nitrogen and hydrogen and make the nitrogen-containing species transforming to macromolecule structure in char.
	TO cite this article:FU Chunhui,WANG Meijun,REN Xiurong, et al. The roles of iron-based addtives on the formation of NH3 and HCN during brown coal pyrolysis[OL].[18 June 2013] http://en.paper.edu.cn/en_releasepaper/content/4548346

Saved Papers

Saved Papers


	3. Optimization of trace elements using response surface methodology (RSM) for biogas production in dry anaerobic digestion
	LI Hongli,CAO Feifei,WANG Yan
	Chemical Engineering 25 January 2013
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The effect of trace elements (Fe、Co and Ni) on mesophilic dry anaerobic digestion was investigated in this study. Response surface methodology (RSM), based on a three-level Box-Behnken Design with the Design-Expert Software, was employed in order to obtain the optimal concentrations of trace elements. The experiment results demonstrated that the optimized concentrations of trace elements were 15.0 mg FeoL-1, 1.0 mg CooL-1, 1.2 mg NioL-1, respectively. Under the optimized condition, the maximum accumulated biogas reached 7895.28 mL in mesophilic dry anaerobic digestion, which was consistent with the predicted value by the second-order polynomial model.
	TO cite this article:LI Hongli,CAO Feifei,WANG Yan. Optimization of trace elements using response surface methodology (RSM) for biogas production in dry anaerobic digestion[OL].[25 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4518256


	4. Determination of Flooding/Loading Transition Using Acoustic Emission Method
	REN Congjing,ZHOU Yefeng,WANG Jingdai,YANG Yongrong
	Chemical Engineering 09 January 2013
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:We obtained the characteristic scale (G1) of the acoustic emission (AE) signals representing the correlations between bubbles and liquid phase in a gas-liquid stirred tank by using multi-scale wavelet transform and R/S analysis. According to the observation that the energy fraction of AE signals in G1 scale changed regularly with the increasing impeller speeds, a method to determine the flooding/loading transition was presented. The critical speed that represents the regime transition, Nf, was associated with the emergence of steady state in AE energy fractions in G1 scale. Through experiments taken out under different conditions (flow rate, static liquid height and impeller fixed height), AE method based on multi-scale analysis was proved to show adequate sensibility and feasibility in the range of experimental conditions analyzed. By comparing experimental results from AE measurement with that from visual and power draw methods, we found that the average relative errors of AE method were no more than 2.62 % and 1.38%, respectively. It is concluded that multi-scale analysis of AE signals is a feasible means for determining the flooding/loading transition and have the merit of being sensitive, non-intrusive and accurate.
	TO cite this article:REN Congjing,ZHOU Yefeng,WANG Jingdai, et al. Determination of Flooding/Loading Transition Using Acoustic Emission Method[OL].[ 9 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4512864


	5. Cloning, expression and characterization of thermostable lipase from Geobacillus stearothermophilus DSMZ 1550
	Hu Sheng,Huang Jun,Wu Hong,Mei Lehe
	Chemical Engineering 27 March 2012
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:A lipase gene of about 1.3 kb was cloned and sequenced from Geobacillus stearothermophilus strain DSMZ 1550. Nucleotide sequence homology analysis showed that the target gene sequence was completely identical to a published sequence (GenBank accession no. AF237623) from Bacillus stearothermophilus P1. The lipase gene was cloned into pET-28c (+) to construct an expression plasmid (pET-28c(+)-lipase), which was transformed into E. coli BL21 for expression. The cultivation parameters of the expression vector harboring strain were optimized to produce the lipase efficiently. The optimal conditions were determined as following: induction at middle stage of exponential growth (OD600 1.09) with 0.5 mM isopropylthio-d-galactoside (IPTG), induction temperature 28℃and post-induction expression for 6 h. Under the above conditions, the specific activity of lipase reached 1.89 IU/mg. Some characteristics of crude recombinant lipase were also investigated. The optimum pH and temperature of the crude lipase were 8.5 and 55℃. The enzyme activity was strongly inhibited by Zn2+, Fe2+, and phenylmethylsulfonyl fluoride (PMSF).
	TO cite this article:Hu Sheng,Huang Jun,Wu Hong, et al. Cloning, expression and characterization of thermostable lipase from Geobacillus stearothermophilus DSMZ 1550[OL].[27 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4473260


	6. The HI catalytic decomposition in the lab-scale H2 production apparatus of the iodine-sulfur thermochemical cycle
	WANG Laijun,WANG Zhichao,ZHANG Ping,CHEN Songzhe,XU Jingming
	Chemical Engineering 21 April 2011
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The decomposition of HI is the key reaction to produce hydrogen in the Iodine-Sulfur thermochemical hydrogen production cycle (IS cycle). In this paper, the HI catalytic decomposition for the lab-scale H2 producing apparatus of IS-10 (H2 production rate is 10 L/h) was studied. The effects of different supports (carbon nanotubes, active carbon, carbon molecular sieve, graphite and Al2O3), catalyst particle sizes, and temperature on HI decomposition were investigated. Also, the fresh and used catalysts were characterized by XRD and BET. The results showed that the active carbon and carbon molecular sieve had the higher catalytic activity for HI decomposition than other supports. The active carbon was selected to support platinum to catalyze the HI decomposition in the IS-10. In the closed cycle operation, the conversion of HI over the active carbon supported platinum catalyst was more than 20 %, which was near the thermodynamic equilibrium value. The H2 production rate was about 10 L/h, which reached the designed value. The results of the characterization about the fresh and used catalysts indicated that the specific surface area decreased and the Pt particles size increased, which showed the stability of the catalyst should be improved.
	TO cite this article:WANG Laijun,WANG Zhichao,ZHANG Ping, et al. The HI catalytic decomposition in the lab-scale H2 production apparatus of the iodine-sulfur thermochemical cycle[OL].[21 April 2011] http://en.paper.edu.cn/en_releasepaper/content/4423559


	7. Synthesis and characterization of novel Λ-shape heterocyclic azo chromophores
	Jia Dai,Yuming Zhou,Man He,Yiping Cui,Tong Zhang
	Chemical Engineering 20 May 2009
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:A facile high yield synthetic route has been established for the synthesis of hyperbranched heterocyclic azo chromophores. These chromophores were intentionally designed as a dendritic structure to study structure-property relationships. These chromophores have been studied with respect to their solvatochromism and thermal behaviour. Molecular structural characterization for the resulting chromophores was achieved by 1H NMR, FT–IR, Elements Analysis, UV-vis spectra and TG. The chromophores exhibit excellent solubility in common organic solvents, high transparency and thermal stability up to 254℃.
	TO cite this article:Jia Dai,Yuming Zhou,Man He, et al. Synthesis and characterization of novel Λ-shape heterocyclic azo chromophores[OL].[20 May 2009] http://en.paper.edu.cn/en_releasepaper/content/32376


	8. Measurement and Comparison of Gas Holdup Distributions in a Stirred Rushton Tank with γ-CT1
	LIU Yuejin,HAN Luchang,LUO Hean,BAI Ge
	Chemical Engineering 08 January 2009
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Three gas dispersion states in liquid — cup dispersion, critical dispersion and full dispersion in a standard gas-liquid stirred Rushton tank (20cm i.d.) were divided based on experimentally based on experimentally observed phenomena. Only those gas dispersion states that were over their corresponding critical gas dispersion states were of signification in industrial applications. Detailed cross-section CT scan images were obtained using a Cs-137 γ-CT scan setup in CREL for the tank at 3/4 dimensionless static liquid height at larger gas rates and higher impeller rotating speeds, when gas dispersion states were over the corresponding critical dispersion states, and their corresponding relationships of gas holdup distribution with dimension radius were established based on the CT images. The comparsions and analyses of the distributions of gas holdup at 3/4 dimensionless static liquid height were investigated based on the CT images and their corresponding digital distribution curves of gas hold up with dimension radius. The work done in this paper is of great significance in measurement and comparison of gas holdup distributions for gas-liquid stirred Rushton tanks.
	TO cite this article:LIU Yuejin,HAN Luchang,LUO Hean, et al. Measurement and Comparison of Gas Holdup Distributions in a Stirred Rushton Tank with γ-CT1[OL].[ 8 January 2009] http://en.paper.edu.cn/en_releasepaper/content/27502


	9. Application of A Cleaner Tanning agent-THPC: Eco-friendly Material
	CHEN Hui,SHAN Zhihua
	Chemical Engineering 30 December 2008
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Cross-linking agents play an important part in the physical properties of collagen based biomaterials. Tetrakis hydroxymethyl phosphonium chloride (THPC) is an aldehydic tanning agent that is widely used to stabilize collagens in the leather industry. The exact mechanism that it reacts with collagens is, however, not well understood. In this study, the interaction of THPC, with collagens, has been investigated using a number of analytical techniques. Nuclear magnetic resonance (NMR) of THPC with a model collagen samples (ethylenediamine, glycin and hide powder) showed that THPC can form multipoint fixation pattern with amino groups of protein and improve the hydrothermal stability of collagen protein. Through tanning trials, we have reported simple and clean technology by using THPC compared to basic chromium sulphate (BCS), glutaraldehyde and oxazolidine E tanning systems. THPC process helps to reduce the chemical oxygen demand (COD), total dissolved solids (TDS) and formaldehyde content. Based on the results obtained, a scheme has been proposed that THPC tanning agent not only has advantages in reducing pollution loads but also seems to be techno-economically viable.
	TO cite this article:CHEN Hui,SHAN Zhihua. Application of A Cleaner Tanning agent-THPC: Eco-friendly Material [OL].[30 December 2008] http://en.paper.edu.cn/en_releasepaper/content/27136


	10. Study on Solid-liquid Equilibrium of p-nitrotoluene in Carbon Tetrachloride, Acetone, Acetic Acid and Toluene
	Zhenxi Jiang,Xianyan Yuan,Xiaowei Cao,Baozeng Ren
	Chemical Engineering 14 May 2008
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Using a dynamic method which was designed and installed with computer and laser monitor on line, the solubility values of p-nitrotoluene in carbon tetrachloride, acetone, acetic acid and toluene were measured at temperatures ranging from 284.33K to 315.94K at atmospheric pressure. The experimental data were correlated with Apelbat equation. Results indicated that the method was available and the data obtained were acceptable.
	TO cite this article:Zhenxi Jiang,Xianyan Yuan,Xiaowei Cao, et al. Study on Solid-liquid Equilibrium of p-nitrotoluene in Carbon Tetrachloride, Acetone, Acetic Acid and Toluene[OL].[14 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21376

	Check out RSS, or use RSS reader to subscribe this item