Abstract: A new ultrasonic aided laser joining method (UAL) for bonding dissimilar materials has been developed. The method is capable of eliminating the laser-induced bubbles at the bonding faces and to improve the joint strength over that of the conventional laser-assisted metal and plastic joining method (LAMP). Some experiments on joining titanium to polyethylene terephthalate have been conducted to show the superiority of UAL over LAMP. The results showed that the joint strength, measured in terms of failure load, was significantly increased when ultrasonic vibration was employed during laser joining. For the LAMP joined specimens, fracture normally occurred at the metal-plastic interface, whereas for the UAL joined specimens, fracture normally occurred in the parent plastic part. The improvement in joint strength is mainly due to the elimination of pores in the resolidified plastic.

Abstract: (3?,9?,10?,13?,14?,17?,20S,22E)-Ergosta-5,7,22-trien-3-ol. A method for preparing the same by drying a fruiting body of Cordyceps militaris, grinding the fruiting body to yield ultrafine powders; boiling and extracting the ultrafine powders, centrifuging and collecting a precipitate. A method for treating a tumor by administering to a patient in need of treating a tumor (3?,9?,10?,13?,14?,17?,20S,22E)-ergosta-5,7,22-trien-3-ol.

Abstract: A new ultrasonic aided laser joining method (UAL) for bonding dissimilar materials has been developed. The method is capable of eliminating the laser-induced bubbles at the bonding faces and to improve the joint strength over that of the conventional laser-assisted metal and plastic joining method (LAMP). Some experiments on joining titanium to polyethylene terephthalate have been conducted to show the superiority of UAL over LAMP. The results showed that the joint strength, measured in terms of failure load, was significantly increased when ultrasonic vibration was employed during laser joining. For the LAMP joined specimens, fracture normally occurred at the metal-plastic interface, whereas for the UAL joined specimens, fracture normally occurred in the parent plastic part. The improvement in joint strength is mainly due to the elimination of pores in the resolidified plastic.

Abstract: (3?,9?,10?,13?,14?,17?,20S,22E)-Ergosta-5,7,22-trien-3-ol. A method for preparing the same by drying a fruiting body of Cordyceps militaris, grinding the fruiting body to yield ultrafine powders; boiling and extracting the ultrafine powders, centrifuging and collecting a precipitate. A method for treating a tumor by administering to a patient in need of treating a tumor (3?,9?,10?,13?,14?,17?,20S,22E)-ergosta-5,7,22-trien-3-ol.