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Article
Continuous Biogas Slurry Substitution of Chemical Fertilizer with Wheat/Maize Straw Return Alters Surface and Subsoil Physicochemical and Aggregate Properties Differently
Biogas slurry is increasingly adopted as a substitute for chemical fertilizer to improve soil fertility and control soil degradation. But little is known about its long-term effects on different soil layers. T...
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Article
Cover Crop Effects on Soil N Retention and Supply in Fertilizer-Intensive Crop** Systems (A Review)
Excessive use of nitrogen fertilizers is a common problem for intensively cultivated crop** systems. Introducing cover crops during fallow periods is a good practice for encouraging the sustainable use of N ...
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Article
TGFβ promotes mesenchymal phenotype of pancreatic cancer cells, in part, through epigenetic activation of VAV1
The highly homeostasis-resistant nature of cancer cells leads to their escape from treatment and to liver metastasis, which in turn makes pancreatic ductal adenocarcinoma (PDAC) difficult to treat, especially ...
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Article
Effects of Cr2O3 do** on the microstructural and electrical properties of ZnO–Bi2O3 based varistor films
Do** of Bi2O3 has been considered to be the essential condition for ZnO varistors. But there have always been found that Bi2O3 second phases concentrated at grain boundaries will have great effects on electric...
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Chapter and Conference Paper
Preinvestigations of a Redesigned HIRENASD Wing Model in Preparation for New Aero-Structural Dynamic Experiments in ETW
In this paper preliminary numerical investigations are presented which have been conducted at the Chair of Mechanics (LFM) of RWTH Aachen University during the course of the new experimental/numerical project ...
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Article
Comparative study of pure component adsorption of linear alkanes in zeolites MFI, BEA and MOR
Grand canonical Monte Carlo (GCMC) simulations and configurational-bias Monte Carlo simulations (CBMC) have been performed to compute and compare the pure component adsorption isotherms of C1–C7 linear alkanes...
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Article
Isomerization of β-carotene by titanium tetrachloride catalyst
Isomerization of all-trans-β-carotene occurs during shaking with 0.5% of titanium tetrachloride catalyst in methylene chloride at room temperature. In the present study we compared two types of columns C18 and C3...
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Article
Tomato pulp as source for the production of lycopene powder containing high proportion of cis-isomers
Cis-isomers of lycopene has been demonstrated to possess higher biological activity than its all-trans form. The objectives of this study were to compare the extraction efficiency and deg...
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Article
Stability of carotenoids in tomato juice during processing
The stability of carotenoids in tomato juice as affected by various processing treatments was studied. Fresh tomatoes were crushed, hot-broken at 82 °C, screened and the juice was subjected to the following tr...
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Article
Preparative column chromatography of four groups of isoflavones from soybean cake
Various adsorbents and solvent systems were compared with respect to the separation efficiency of four classes of isoflavones, malonylglucosides, acetylglucosides, glucosides and aglycones, in soybean cake by ...
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Article
Determination of Carotenoids in the Chinese Medical Herb Jiao-Gu-Lan (Gynostemma Pentaphyllum MAKINO) by Liquid Chromatography
The amount and variety of carotenoids in Jiao-Gu-Lan (Gynostemma pentaphyllum MAKINO), a traditional Chinese medicinal herb which is currently sold in Taiwan and China as herbal tea, were determined by HPLC. Drie...
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Article
An improved method for determination of isoflavones in soybean powder by liquid chromatography
Several extraction and separation methods were evaluated and then developed for determination of isoflavone in soybean powder. Results showed that the highest yield of isoflavones was achieved by using defatte...
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Article
Collagen Metabolism and Turnover in Women with Stress Urinary Incontience and Pelvic Prolapse
The aim of this study was to investigate quantitative mRNA expression of matrix metalloproteinases MMP-1, MMP-2, MMP-9, and their inhibitors, the tissue inhibitors of metalloproteinases TIMP-1, TIMP-2 and TIMP...
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Article
Separation of lycopene and itscis isomers by liquid chromatography
Lycopene is an important biological compound that is widely distributed in fruits and vegetables. Epidemiological study has shown that the dietary intake of lycopene may reduce the risk of certain types of can...
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Article
An improved analytical method for determination of heterocyclic amines in chicken legs
Several extraction, separation and detection methods for heterocyclic amines (HAs) in chicken legs were evaluated by liquid chromatography. Results showed that the most appropriate extraction method includes t...
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Article
Comparison of GC-MS and HPLC for overcoming matrix interferences in the analysis of PAHs in smoked food
Several separation and detection methods for polycyclic aromatic hydrocarbons (PAHs) in smoked chicken by GC and HPLC were compared. With HPLC and a gradient solvent system, all 16 PAHs could be simultaneously...
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Article
Simultaneous determination of preservatives, sweeteners and antioxidants in foods by paired-ion liquid chromatography
A paired-ion, reversed-phase high-performance liquid chromatographic method was developed for the simultaneous determination of sweeteners (dulcin, saccharin-Na and acesulfame-K), preservatives (sodium dehydro...
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Article
Simultaneous determination of preservatives, sweeteners and antioxidants in foods by paired-ion liquid chromatography
A paired-ion, reversed-phase high-performance liquid chromatographic method was developed for the simultaneous determination of sweeteners (dulcin, saccharin-Na and acesulfame-K), preservatives (sodium dehydro...
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Article
Optimization of mobile phases for HPLC of cis-trans carotene isomers
Various methanol-based, binary and ternary solvent systems were compared with respect to resolution of cis isomers of α and β-carotene by reversed-phase HPLC. A ternary system: acetonitrile-methanol-methylene ...
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Article
The Microscopic Study of Y-Ba-Cu-O Compound
The microstructure of Y-Ba-Cu-O compound, sintered at 950°C for 16h, was examined by using transmission electron microscope(TEM). For the furnace cooling sample, two variants of–orthorhombic YBa2-Cu3O7−x (O-Y123)...
