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Hangzhou, China

Shi L.-E.,Hangzhou Normal University | Fang X.-J.,Hangzhou Normal University | Zhang Z.-L.,Hangzhou Normal University | Zhou T.,Hangzhou Normal University | And 3 more authors.
International Journal of Food Science and Technology

The antibacterial activity of zinc oxide nanoparticles prepared by sonication method was evaluated in this paper. Effect of calcination conditions on the size and antibacterial activity of zinc oxide nanoparticles was investigated. Zinc oxide nanoparticles were characterised for purity (Thermo Gravimetric Analyzer), crystallinity and crystal size (XRD), particle size and morphology (TEM), etc. Results showed that the smallest size 8nm could be obtained. The lethal experiments of nanocrystalline zinc oxide were evaluated on Lactobacillus plantarum. All L. Plantarum were killed after 24-h exposure at 1000ppm. With the increase in calcination time, the lethal effect of ZnO nanoparticles was increased after 6-h exposure at 100 or 1000ppm. © 2012 Institute of Food Science and Technology. Source

Tang Y.-X.,Hangzhou Dianzi University | Sun W.-L.,Hangzhou Wahaha Group Co. | He H.,Hangzhou Dianzi University | Liang D.-P.,Harbin University of Commerce
Gongneng Cailiao/Journal of Functional Materials

In order to improve the combinatorial performance of poly(butylenes succinate)(PBS)/poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (poly(3HB-co-4HB)) like the mechanical properties and rheological behaviors, PBS/poly(3HB-co-4HB)/nano Kaolin blends were prepared by mechanically melting mixing. The mechanical and degradation properties and rheological behaviors of the PBS/poly(3HB-co-4HB)/nano Kaolin were studied respectively with universal material testing machine, rheometer and scanning electron microscope (SEM). The mechanical properties testing of universal material testing machine shown that the relative mass ratio of nano Kaolin was 8, the notched impact strength and elongation at break of PBS/poly (3HB-co-4HB)/nano Kaolin blends were improved obviously. However, the relative mass ratio of nano Kaolin increased, their properties decreased in a way. At the same time, the tensile strengths of PBS/poly (3HB-co-4HB)/nano Kaolin blends were declined clearly. The rheology experiments indicated the storage modulus (G') and loss modulus (G″) increased significantly with the increase of frequency. The SEM shown that degradation performances of PBS/poly (3HB-co-4HB)/nano Kaolin (100/10/12) were favorable. Source

Lei M.-Z.,Zhejiang Sci-Tech University | Dai W.-Z.,Zhejiang Sci-Tech University | Wang L.-Q.,Hangzhou Wahaha Group Co.
Applied Mechanics and Materials

Linear oscillatory motors with short stroke represent an excellent alternative in linear compressor applications. A novel halbach-type transverse-flux linear oscillatory motor (HTLOM) with two stators was presented, which has the advantage of without moving iron core, compact structure, light weight, easy-stacked stator and smooth thrust force characteristic. Based on the principle analysis, the static thrust force was calculated by three-dimensional (3-D) finite element analysis (FEA). Then the dynamic simulation was presented for the resonant characteristics of current, displacement, active and reactive power and power factor versus frequency. The analysis result shows that the novel HTLOM with two stators is suitable for linear compressor application, and its maximum efficiency can be achieved at velocity resonance by spring stiffness selection. The conclusions are very significant for the further driving control in industrial usage. © (2013) Trans Tech Publications, Switzerland. Source

Hangzhou Wahaha Group Co. | Date: 2013-12-19

Coffee-based beverages; cocoa-based beverages; chocolate-based beverages; tea; iced tea; tea-based beverages; sugar; noodles; farinaceous foods; ice cream. Beer; non-alcoholic fruit extracts; non-alcoholic fruit juice beverages; waters beverages; vegetable juices beverages; non-alcoholic beverages; aerated water; fruit nectars, non-alcoholic; smoothies; soda water.

Hangzhou Wahaha Group Co. | Date: 2015-02-12

Canned fruits; Canned vegetables; Milk; Milk beverages with high milk content; Milk products excluding ice cream, ice milk and frozen yogurt; Olive oil; Rice milk for use as a milk substitute; Soya milk; Yogurt. Chocolate; Chocolate-based beverages; Chocolate-based beverages with milk; Cocoa beverages with milk; Cocoa-based beverages; Coffee; Coffee based beverages; Coffee beverages with milk; Farinaceous food pastes for human consumption; Food starch; Ice cream; Oatmeal; Sugar; Tea-based beverages. Aerated water; Beer; Essences for making non-alcoholic beverages; Fruit nectars; Kvass; Lemonades; Milk of almonds for beverage; Mineral water; Non-alcoholic beverages, namely, carbonated beverages; Non-alcoholic fruit juice beverages; Non-alcoholic peanut milk beverages not being a milk substitute; Smoothies; Soda water; Soy-based beverages not being milk substitutes; Vegetable juice; Water beverages.

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