Advanced Materials Research Vols. 230-232

Abstract: Based on the generating mechanism of surface morphology by tangential ultrasonic vibration assisted grinding (TUAG), the calculating model for surface roughness is established and the surface roughness experiments are conducted both in TUAG and conventional grinding (CG). The results indicate that the effect of the grinding abrasive size on the surface roughness is the most obvious, and the surface roughness is decreased due to the tangential ultrasonic vibration.

Abstract: The origin and constitutes of construction waste and demolition are expounded, and the bane of construction waste and demolition to environment is also introduced in this paper. The ways of recycling of concrete and tile in the construction waste and demolition, which was emphasized, not only mitigate destruction of the waste to the environment , but benefit the development of society.

Abstract: Py-GC/MS technology was used to analyze the high-grade resource recovering approaches of C. camphora root wood at 350°C. The result showed that the chemical components of acetone extractives from C. camphora root wood are as: Benzene, 1,2-dimethoxy-4-(2-propenyl)- (10.255%), Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1R)- (7.751%), p-menth-1-en-8-ol (5.765%), Phenol, 2,6-dimethoxy-4-(2-propenyl)- (3.833%), 1,6-Cyclodecadiene, 1-methyl-5-methylene-8- (1-methylethyl)-, [s-(E,E)]- (3.669%), D-Allose (3.265%), Acetic acid (2.784%), 1(2H)-Naphthalenone, octahydro-8a-hydroxy- (2.719%), 1,3-Benzodioxole, 4-methoxy-6- (2-propenyl)- (2.674%), .beta.(3,4-Methylenedioxyphenyl)propionic acid (2.216%), Phenol, 4-methyl- (2.200%), Phenol, 2,6-dimethoxy- (2.138%), 3,4-Methylenedioxyphenyl acetone (2.125%), 5-Hepten-2-one, 6-methyl- (2.075%), 2-Oxabicyclo[2.2.2]octan-6-ol, 1,3,3-trimethyl- (1.808%), Phenol, 2-methoxy-3-(2-propenyl)- (1.688%), etc. The analytical result by 350°C-based Py-GC/MS showed that the 350°C pyrolyzate of acetone extractives from C. camphora root wood can be used as top value-added materials of biomedicine, but also used as the bioactive materials of bioenergy, cosmetic, food, and other industrial solvents.

Abstract: In order to better utilize and recover the productive waste leaves from the Cinnamomum camphora, pyrolysis- GC/MS technology was used to analyze the possible top value-added components of benzene/ethanol extractives of Cinnamomum camphora leaves. Relative content of each component was determined by area normalization. 95 compounds from 102 peaks representing 99.216% of the benzene/ethanol extractives of Cinnamomum camphora leaves were identified, and the main constituents were Hexadecanoic acid, 4-nitrophenyl ester (17.336%), Vitamin E (4.804%), Oxirane, hexadecyl- (4.639%), 2,6-Bis(3,4-methylenedioxyphenyl) -3,7-dioxabicyclo(3.3.0)octane (4.333%), 1-Hexacosene (4.148%), Hexadecanoic acid, 2-methoxy-, methyl ester (3.783%), 1,19-Eicosadiene (3.607%), 3-Cyclohexene-1- methanol, .alpha.,.alpha.4-trimethyl- (3.542%), .gamma.-Sitosterol (3.495%), Nonacosane (3.217%), .gamma.-Tocopherol (3.119%), Eucalyptol (2.23%), vanillin (2.742%), Heptacosane (2.182%), Pentatriacontane (2.039%), 1-Nonadecene (2.011%), etc. The results of function analyses showed that the 350 °C pyrolyzate from benzene/ethanol extractives of waste leaves of Cinnamomum camphora are abundant in materials of noble natural medicines and cosmetic.

Abstract: The current processing and utilization of oil-tea cake is still characterized by low economic benefit and low value added, therefore, 300°C-based pyrolysis- GC/MS technology was used to analyze the bioactive components of acetone extractives of oil-tea cake. Relative content of each component was determined by area normalization. The analytical result showed that the main components from 300°C-based pyrolyzate of acetone extractives of oil-tea cake by pyrolysis- GC/MS were as: SQUALENE (18.61%), 9-OCTADECENAL, (Z)- (15.27%), 3',5'-DIMETHOXYACETOPHENONE (9.53%), HEXADECANOIC ACID (7.28%), (Z)14-TRICOSENYL FORMATE (5.15%), .GAMMA.-SITOSTEROL (3.82%), BIS(2-METHOXYETHYL) PHTHALATE (2.86%), ERGOST-5-EN-3-OL, (3.BETA.)- (2.31%), etc. The results of function analyses showed that the 300°C-based pyrolyzate of acetone extractives of oil-tea cake contain rich components of rare natural medicinal materials, and also contain value-added materials of high-grade spice, food, cosmetic and bioenergy.

Abstract: The chemical components of helium volatiles from the fresh branches of Cinnamomum camphora were studied by TD-GC/MS. The analytical result by 60°С-based TD-GC/MS showed that 55 peaks were obtained from the helium volatiles from the fresh branches of Cinnamomum camphora and 53 chemical compounds were identified. The results showed that the main components were as: Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1R)- (15.4328%), 1,3-Benzodioxole, 5-(2-propenyl)- (14.881%), Tricyclo[2.2.1.0(2,6)]heptane, 1,7-dimethyl-7-(4-methyl-3-pentenyl)-, (-)- (12.694%), p-menth-1-en-8-ol (9.832%), Bicyclo[2.2.1]heptane, 2-methyl-3-methylene-2-(4-methyl-3- pentenyl)-, (1S-exo)- (6.143%), 1,6,10-Dodecatrien-3-ol, 3,7,11-trimethyl- (5.365%), Bicyclo[3.1.1] hept-2-ene, 2,6-dimethyl-6-(4-methyl-3-pentenyl)- (4.527%), Naphthalene, 1,2,3,5,6,8a- hexahydro-4,7-dimethyl-1-(1-methylethyl)-, (1S-cis)- (4.129%), 3-Cyclohexen-1-ol, 4-methyl-1- (1-methylethyl)- (2.965%), Borneol (2.627%), Bicyclo[2.2.1]heptan-2-ol, 1,7,7-trimethyl-, acetate, (1S-endo)- (2.586%), Copaene (2.534%), 1,6,10-Dodecatriene, 7,11-dimethyl-3-methylene-, (Z)- (1.612%), (-)-Isosativene (1.121%), etc. The analytical result suggested that the helium volatiles from the fresh branches of Cinnamomum camphora could be used as industrial materials of biomedicines and spicery.

Abstract: The extractives of bamboo root was often used to cure some intractable diseases in the countryside of China, but the components of bamboo root extract are still unresolved. Therefore, 300 °C-based pyrolysis- GC/MS technology was used to identify and analyze the top value-added biomedical and bioactive components of benzene/ethanol extractives of Moso bamboo root. 45 compounds representing 97.316 % of the total areas were identified (Table 1) from 55 peaks. The main chemical components of benzene/methanol extractives of Moso bamboo root by 300°C-based Pyrolysis- GC/MS are as: 1,3-BENZODIOXOLE, 5-(1-PROPENYL)- (15.263%), NAPHTHALENE (12.316%), 1,2-BENZENEDICARBOXYLICACID,BIS(2-METHYLPROPYL) ESTER (9.385%), BENZENE, 1,2-DIMETHOXY-4-(2-PROPENYL)- (7.624%), 2-PROPENOIC ACID, 3-(2-HYDROXYPHENYL)- (E)- (6.012%), 4-HYDROXY-2-METHYLACETOPHENONE (5.226%), 1,2-BENZENEDICARBOXYLIC ACID, BUTYL2-METHYLPROPYL ESTER (4.328%), etc. The result showed that the 300 °C pyrolyzate of benzene/ethanol extractives of Moso bamboo root is rich in biomedical components, and also contains some bioactive components which can be used as top value-added materials of high-grade spice, cosmetic and food.

Abstract: In order to separate top value-added bioactive components from waste leaves of Phoenix tree and hence decrease its pollution to water environment, we attempted to analyze the chemical components of benzene/ethanol extractive of Phoenix leaves by means of GC/MS. Relative content of each component was determined by area normalization, and 10 compounds representing 94.37 % of the extractives were identified. The most abundant constituents were as: Ethanol, 2-butoxy- (47.49% from two peaks), exanoic acid, ethyl ester (22.89%), 1-Butyne, 3-chloro- (17.04%), Bicyclo[3.1.1]heptane, 2,6,6-trimethyl- (3.17%), cis-2,3,5-Trimethoxy-.beta.-methyl- (2.91%), Cyclohexanone, 3-hydroxy- (2.20%), 2,5-Cyclohexadien-1-one, 2,5-dimethyl- (1.35% from two peaks), cis-11-Hexadecen-1-yl acetate (1.04%), Octadecane (1.00%), etc. As the first report here, our result by GC/MS showed that the benzene-methanol extractive of freeze-dried Phoenix leaves can be developed into top value-added materials of medicines, biofuel and solvents.

Abstract: Non-obstructive particle damping is a composite damping technology based on traditional particle damping and impact damping. Being Compared with viscous elastic damping structure, advantage of NOPD is damping characteristic of system improved greatly on the basis of specific whole designing structure and whole mass. The technology has good general vibration-reduced outcome. Beam structure is a common structural element form in engineering application. Because of vibration or instability of beam under external excitation, in this paper, free beam is regarded as an object, and many factors affecting damping characteristic of NOPD are studied, which supplies referring results for engineering application of NOPD.

Abstract: In this paper, the test object was vertical vibration conveyor of transporting molding sand in the foundry. Using eddy current sensor and the differential transformer sensor respectively measured for the vertical vibration and rotation vibration, and measurement system block diagram was given. It provided the basis of the design, operation, and fault detection about vibration machines.