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BACKGROUND Endometrial carcinoma is one of the most common gynecological malignancies in women. The diagnosis of the disease at early or premalignant stages is crucial for the patient's prognosis. To date, diagnosis and follow-up of endometrial carcinoma and hyperplasia require invasive procedures. Therefore, there is considerable demand for the(More)
BACKGROUND Ovarian cancer is predominant of epithelial cell origin and often present at an advanced stage with poor prognosis. Most animal models of ovarian carcinoma yield thecal/granulose cell tumors, rather than adenocarcinomas. The best reported induction rate of adenocarcinoma in rats is 10-45% by an ovarian implantation of 7,(More)
OBJECTIVE To correlate the objective cephalometric measurements with subjective facial esthetics in patients with bimaxillary protrusion. MATERIALS AND METHODS The sample consisted of 60 Asian-Chinese patients with bimaxillary protrusion who met the inclusion criteria. The facial esthetics of posttreatment profile and the change of profile on standardized(More)
A novel CO<inf>2</inf> non-dispersive infrared (NDIR) sensor using the mid-infrared (mid-IR) hollow fiber as a gas cell has been demonstrated. The mid-IR hollow fiber is chosen for its optimum transmission band (bandgap) overlap with CO<inf>2</inf> fundamental absorption spectrum around 4.26 &#x00B5;m to serve as a filter. A comparison with the system using(More)
In this paper, new physical structure and electrical characteristics of deep trench superjunction power VDMOSFET were introduced comparing with traditional multiple epitaxy process. New deep trench process brought higher IDSS leakage in the wafer center, design and process improvements were implemented to achieve positive results.
This paper presents a theoretical study on the possible realization of high frequency ultrasonic phased array transducer (f&#x003E;100 MHz) using MEMS technologies. A silicon based lithium niobate (LiNbO<inf>3</inf>) single crystal linear array is considered. Finite element method is employed for the simulation optimization design of such device. Continuous(More)
The surface blistering of the 6 times 10<sup>16</sup> cm<sup>-2 </sup> dose hydrogen ion implanted GaAs wafers were investigated as a function of temperature and time during the rapid thermal annealing, as well as the implant energy. For the 50keV implanted samples, the blisters (microcavities) start to form and crack at a temperature larger than 300degC.(More)
OBJECTIVE To evaluate Beijing college students' concern and preference for maxillary anterior tooth esthetic factors. METHODS Several images about lip and tooth were made through computer. A questionnaire was sent out to students in ten colleges and then collected. There were five factors to be evaluated: relationship of maxillary incisors and lower lip,(More)