OBJECTIVE To assess the postoperative QOL(Quality of Life) of Chinese laryngeal cancer patients who have undergone a partial or total laryngec-tomy, and to analyze their prognostic factors, as well as to assess the fe...OBJECTIVE To assess the postoperative QOL(Quality of Life) of Chinese laryngeal cancer patients who have undergone a partial or total laryngec-tomy, and to analyze their prognostic factors, as well as to assess the feasibility of using the University of Washington Quality of Life (UW-QOL) questionnaire in QOL studies of laryngeal cancer patients, METHODS Using the UW-QOL questionnaire, a survey was conducted in patients treated by a partial or total laryngectomy for laryngeal cancer. RESULTS Questionnaires were sent to 142 patients who were disease-free for more than half a year after surgery. Replies were received from 130 patients (91% response rate) with 118 patients completing the questionnaire. These patients were divided into 2 groups: a partial-laryngectomy group (n=81; excluding cordectomy) and a total -laryngectomy group (n=37). The composite QOL scores of the partial-laryngectomy group (692.3±127.9) were higher than those of total-laryngectomy group (636.4±140.0), showing a statistically significant difference (P<0.05). The partial-laryngectomy group (74.3±23.8; 80.9±20.3) was better than the total-laryngectomy group (40.3±25.8; 69.6±27.1) in speech and appearance (P<0.001; P<0.05); but the total-laryngectomy group (92.6±13.0) was superior to the partial-laryngectomy group (83.0±20.5) in pain (P< 0.01). Six factors including cancer stage, operative modality, complications, postoperative radiotherapy or chemotherapy, living partners and chronic disease before or after operation were related to postlaryngecto-my QOL. CONCLUSION Partial laryngectomy is superior to total laryngectomy in speech, appearance and overall QOL. Besides operative modality, cancer stage, complications, postoperative radiotherapy or chemotherapy, living partners and chronic diseases before or after operation are factors influencing postlaryngectomy QOL. As a whole, the UW-QOL questionnaire is a good instrument for studying QOL of laryngeal cancer patients in China, and it can be used to explore the QOL outcomes obtained from different reconstructive techniques.展开更多
The shear modulus of the adhesive layer and the failure mode of adhesive structure on single lap joint specimens under tensile tests are investigated in this paper.The aluminum-aluminum adherends are bonded by two dif...The shear modulus of the adhesive layer and the failure mode of adhesive structure on single lap joint specimens under tensile tests are investigated in this paper.The aluminum-aluminum adherends are bonded by two different adhesives:polydimethylsiloxane (PDMS) and epoxy.The full deformation fields are measured using the digital image correlation (DIC) method with the images on the middle part of the adhesive layer recorded by a high resolution microscope.Then,the shear modulus values of the two adhesives are calculated with a simple pure shear strain model.A numerical model is proposed to simulate the single lap joint structure under tensile load in comparison with the experimental results.The results show that this method can successfully estimate the shear modulus of the adhesive layer.The failure behavior of epoxy adhesive/adherend interface is also analyzed and discussed.展开更多
文摘OBJECTIVE To assess the postoperative QOL(Quality of Life) of Chinese laryngeal cancer patients who have undergone a partial or total laryngec-tomy, and to analyze their prognostic factors, as well as to assess the feasibility of using the University of Washington Quality of Life (UW-QOL) questionnaire in QOL studies of laryngeal cancer patients, METHODS Using the UW-QOL questionnaire, a survey was conducted in patients treated by a partial or total laryngectomy for laryngeal cancer. RESULTS Questionnaires were sent to 142 patients who were disease-free for more than half a year after surgery. Replies were received from 130 patients (91% response rate) with 118 patients completing the questionnaire. These patients were divided into 2 groups: a partial-laryngectomy group (n=81; excluding cordectomy) and a total -laryngectomy group (n=37). The composite QOL scores of the partial-laryngectomy group (692.3±127.9) were higher than those of total-laryngectomy group (636.4±140.0), showing a statistically significant difference (P<0.05). The partial-laryngectomy group (74.3±23.8; 80.9±20.3) was better than the total-laryngectomy group (40.3±25.8; 69.6±27.1) in speech and appearance (P<0.001; P<0.05); but the total-laryngectomy group (92.6±13.0) was superior to the partial-laryngectomy group (83.0±20.5) in pain (P< 0.01). Six factors including cancer stage, operative modality, complications, postoperative radiotherapy or chemotherapy, living partners and chronic disease before or after operation were related to postlaryngecto-my QOL. CONCLUSION Partial laryngectomy is superior to total laryngectomy in speech, appearance and overall QOL. Besides operative modality, cancer stage, complications, postoperative radiotherapy or chemotherapy, living partners and chronic diseases before or after operation are factors influencing postlaryngectomy QOL. As a whole, the UW-QOL questionnaire is a good instrument for studying QOL of laryngeal cancer patients in China, and it can be used to explore the QOL outcomes obtained from different reconstructive techniques.
基金support by the National Basic Research Program of China(Grant Nos. 2010CB631005 and 2011CB606105)the National Natural Science Foundation of China(Grant Nos. 10625209,10732080 and 90916010)+2 种基金China Postdoctoral Science Foundation(Grant No. 20090460335)Specialized Research Fund for the Doctoral Program of Higher Education(Grant No. 20090002110048)the opening funds from the State Key Laboratory of Explosion Science and Technology(Grant No. KFJJ10-18Y)
文摘The shear modulus of the adhesive layer and the failure mode of adhesive structure on single lap joint specimens under tensile tests are investigated in this paper.The aluminum-aluminum adherends are bonded by two different adhesives:polydimethylsiloxane (PDMS) and epoxy.The full deformation fields are measured using the digital image correlation (DIC) method with the images on the middle part of the adhesive layer recorded by a high resolution microscope.Then,the shear modulus values of the two adhesives are calculated with a simple pure shear strain model.A numerical model is proposed to simulate the single lap joint structure under tensile load in comparison with the experimental results.The results show that this method can successfully estimate the shear modulus of the adhesive layer.The failure behavior of epoxy adhesive/adherend interface is also analyzed and discussed.
