Texture evolution during inclined cold rolling of used non-oriented silicon steel

With the objective of optimizing the texture components and exploring a method to improve the magnetic properties of used silicon steel, the methods of one inclined rolling and two inclined rolling were applied. The result shows: the new Goss grains were nucleated except at {111} deformed grains, and also formed at the grain boundary between two deformed grains with {113} orientation, and at grains boundaries between {113} and {100} deformed grain. The grain size after one inclined rolling (57 %) was larger and more homogeneous than the grain size after the two inclined rolling. Although with different cold rolling methods (one and two inclined rolling), the resulted annealing textures all had similar features. The difference was the relative intensities between the main texture. A significant feature of one inclined rolling was the intensification of the η-fiber and the Goss texture component and the weakening of γ-fiber. At an inclination angle of 60°, a significantly strong Goss texture was produced, which was highest among all samples, and the maximum volume fraction of {110}+{100} texture can also be obtained. One inclined rolling can better improve the magnetic properties of used silicon steel (B₅₀), and the magnetic induction is between 1.712 T and 1.742 T. The highest magnetic induction of 1.742 T can be obtained by one inclined rolling (at an inclination angle of 60°).     

炖鸡肉及鸡汤的品质研究

采用正交设计方法,通过感官评定、理化分析其蛋白质、脂肪、干物质、风味物质以及组织学变化,研究炖鸡烹饪对原料鸡品种、原料鸡年龄、食盐的用量、冷冻状态、加热时间和火力等对鸡汤、鸡肉品质的影响.结果发现,肉鸡的肉质比老母鸡的好,汤汁则相反.在中火慢炖添加适量盐的条件下,肉质和汤汁较好,其中冷冻状态的肉质最好,热鲜状态的汤汁最好.因此,最佳烹调参数为火力800W、烹饪时间2h、加1.5％食盐.     

Effects of dietary black cumin seed (Nigella sativa L.) on performance,egg traits,egg cholesterol content and egg yolk fatty acid composition in laying hens

BACKGROUND: The objective of this study was to determine the effects of dietary black cumin seed on performance, egg traits, egg cholesterol content and egg yolk fatty acid composition in laying hens during a 12 week period. For this purpose a total of 160 Lohmann Brown laying hens 36 weeks of age were allocated to four dietary treatments with one control group and three treatment groups. Black cumin seed (Nigella sativa L.) was used at the level of 5, 10 and 15 g kg^?1 in the diets of the first, second and third treatment groups, respectively. RESULTS: Dietary treatments did not significantly affect body weight, feed intake, egg production, egg quality characteristics and blood parameters. Diets containing 10 and 15 g kg^?1 black cumin seed increased egg weight (P < 0.01), improved feed efficiency (P < 0.01) and decreased egg yolk cholesterol, saturated fatty acids (% of total fatty acid methyl esters) and the ratio of saturated to unsaturated fatty acids (P < 0.05) compared to the diet of control group. CONCLUSION: Dietary black cumin seed at the level of 10 and 15 g kg^?1 had beneficial effects on egg weight, feed efficiency, egg cholesterol content and egg yolk fatty acid composition. Therefore it can be used at the level of 10 and 15 g kg^?1 in the diets of laying hens. Copyright © 2009 Society of Chemical Industry     

Prevalence and stability of lysozyme in cheese

The use of the preservative and potential allergen hen egg white lysozyme in cheese production has to be declared. In the present study, an HPLC method with fluorescence detection (HPLC-FLD) was optimised and validated for the analysis of lysozyme in cheese. Lysozyme was detected in concentrations between 30.8 and 386.2 mg/kg cheese in 30 out of 46 analysed commercial cheese samples. During cheese production and storage for 0–54 weeks a lysozyme satellite peak (LSP) was detected, which totals up to 18% of the lysozyme content. Mass spectrometry and peptide mass fingerprint revealed that LSP possesses the same primary structure as lysozyme. Since disulphide scrambling could not be detected, LSP was assigned to a conformational isomer of lysozyme. As a consequence, LSP was included in the HPLC-FLD analysis of lysozymes in cheese.     

The effects of ozone,ultrasound and coating with shellac and lysozyme–chitosan on fresh egg during storage at ambient temperature. Part II: microbial quality,eggshell breaking strength and FT-NIR spectral analysis

This research aims to investigate and compare the effect of different treatments, including gaseous ozone (6-ppm/4-min), ultrasound (450 W/4-min), and coatings of shellac and lysozyme–chitosan (L–C), on fresh eggs during the storage for six weeks at ambient temperature. The internal quality analysis was performed in Part I. In Part II, the bacterial qualities, Fourier transform near-infrared (FT-NIR) spectral image and eggshell breaking strength were monitored. Ozone and ultrasound helped to maintain bacterial quality, but had an adverse effect on shell strength. Coated eggs had the highest value of strength (shellac: 3.63 ± 0.54 kgf; L–C: 3.56 ± 0.54 kgf) and ultrasound-treated eggs had the lowest strength (3.13 ± 0.78 kgf) in egg top. FT-NIR measurement showed that all treatments resulted in a decrease in absorption bands throughout storage. Overall, among the treatments investigated, the coatings were the best for enhancing shelf life with higher strength in eggshell breakage, while the ozone and ultrasound only helped to keep the microbial quality and enhance the shelf life.     

金霉素在鸡体内的药代动力学研究

本文用单剂量静脉注射的方法,研究了饲用金霉素在鸡体内的血药浓度变化,结果表明:金霉素在鸡体内的代谢迅速,其半衰期为1.1h,远小于其它四环素类抗生素,因而不适合全身性用药,而适于局部及消化道给药。     

Microstructural characterization of INCOLOY alloy MA 956

Oxide dispersion strengthened (ODS) ferritic materials obtained by mechanical alloying (MA) display particular microstructure and texture. In this paper a microstructural characterization of an INCOLOY MA 956 alloy in the recrystallized (zone annealed) condition is presented. The alloy exhibits a highly anisotropic microstructure, consisting of elongated grains with a high grain aspect ratio (GAR). The alloy also exhibited strong crystallographic texture. The crystallographic direction <111> was approximately parallel to the extrusion direction of the material. The yttria particles, added to the starting powders, react with aluminum and oxygen present in the system during thermomechanical processing and form mixed (Y,Al) oxides. The analysis of extracted particles showed that the majority of yttrium‐aluminum oxides were tetragonal (Y₃Al₅O₁₂) and orthorhombic (AlYO₃). Quantitative analysis using TEM micrographs showed two classes of dispersoid sizes.     

Effects of dietary humate supplementation on performance,egg quality and egg yolk fatty acid composition in layers

BACKGROUND: The objective of this study was to determine the effects of humate on performance, egg quality and egg yolk fatty acid (FA) composition in laying hens. RESULTS: Six hundred and thirty White Lohmann layers at 46 weeks of age were assigned randomly to seven groups, each with 18 replicate cages of five hens. Control diet (C) and C supplemented with 0.10 (H1), 0.15 (H2), 0.20 (H3), 0.25 (H4), 0.30 (H5) and 0.35 (H6) wt% humate were offered for 25 weeks. Humate supplementation improved performance variables and egg quality indices including shape index, yolk colour, albumen index, yolk index and Haugh unit, but not specific gravity, shell strength and shell thickness. Average feed intake (g), egg production (%), egg weight (g) and feed efficiency for the groups were 118.9, 87.2, 68.1 and 2.07 (C), 118.8, 87.7, 66.3 and 2.08 (H1), 119.3, 89.8, 66.6 and 2.03 (H2), 119.5, 88.9, 66.9 and 2.05 (H3), 118.3, 86.5, 66.9 and 2.11 (H4), 119.3, 90.6, 66.9 and 2.02 (H5) and 123.6, 88.5, 66.1 and 2.16 (H6) respectively. Palmitoleic acid concentration increased from 4.34% (C) to 7.65% (H5) and stearic acid concentration decreased from 7.39% (C) to 5.39% (H6) of total FA. CONCLUSION: Dietary humate supplementation improved performance, inner egg quality parameters and egg yolk fatty acid composition. Copyright © 2008 Society of Chemical Industry     

n Jorunal of Integrated Traditional Chin

Medicine138-139R-4E054;3;EE054_3;童明00090003000300022903-2904举例求趣在医学遗传学教学中的运用效果崔红艳盘锦职业技术学院 辽宁盘锦124000医学遗传学;;举例求趣;;教学0现代中西医结合杂志Modern Jorunal of Integrated Traditional Chinese and Western Medicine139-140R-4E054;3;EE054_3;崔红艳00090003000300022904-2905利用电