浅析安溪县生态茶产业建设的意义

依托社会实践,在深入走访和调查的基础上,总结了政府、茶企、行业协会和高校4个部分在生态茶产业建设中的主要作用和助推机制,总结出了安溪县生态茶产业建设的经验,为县域经济生态转型和生态茶产业建设提供参考

A Study of Individual Decision-Making Behavior in Different Social Dilemma Environment: Based on Experiment Comparison of Public Goods and Common Pool Resources

了解社会成员在不同的社会两难问题下的决策行为,有助于合理解决社会两难问题。尽管对于公共品和公共池塘资源问题已有大量理论和实证文献,然而缺乏对于这两类社会困境的比较。文章采用经济学实验的研究方法,对二次公共品和二次公共池塘资源这两类社会两难问题精心构造博弈实验环境,对被试在不同实验环境顺序下的决策行为进行了系统性比较,并据此得到一些有意义的实验启示。Understanding social members under different social dilemma of decision-making behavior is helpful to solve the social dilemma.Although a large number of theoretical and empirical literature focus on the public goods and common pool resources, there is lacking of comparison between these two types of social dilemma.This paper uses experimental economics method, constructs these two types of social dilemma experimental environment, compares the decision-making behavior under different environment, and finds some valuable experimental implications.国家社会科学基金项目(10BJL027); 福建省社会科学规划项目(2011C047

Digital read-out instrument for measuringDebye photograph

摘要:为测量X射线粉末衍射照片德拜弧，进而计算布拉格角，制作了一种数字显示测量仪器．该仪器用数字读出方式显示测量结果，适用于近代物理X光实验教学．Abstract: An instrument with digital read-out has been made for measuring the X-ray powder diffraction photograph. The instrument can be applied to the modern physical experiments for measuring the Debye photograph and calibrating the Bragg angle

Inhibitory Effect of Salt Marsh Halophyte Salicornia Europaea on Prorocentrum Donghaiense

利用植物抑制藻类生长是目前海洋赤潮治理的有效生态手段之一。以东海原甲藻为材料,研究了滩涂盐生植物盐角草对东海原甲藻生长的抑制效应。结果显示:盐角草过滤培养液和4种根的有机相提取物(甲醇相、正丁醇相、氯仿相和石油醚相)能显著抑制东海原甲藻的生长,改变细胞大小。其中,石油醚相和正丁醇相提取物还能影响藻细胞CHl A含量。有机相提取物中以甲醇相提取物的抑制效果最强,对盐角草甲醇相提取物进行gC-MS分析,得到27种化合物,含量最高的3个组分为5-羟甲基-2-呋喃甲醛、棕榈酸和4-乙烯基-2-甲氧基-苯酚。研究表明:滩涂盐生植物盐角草能够抑制东海原甲藻的生长,具备开发新型赤潮生物抑藻剂的潜力,有望应用于海洋赤潮的防治。Phytoremediation, as one of the mechanisms for controlling marine algal blooms, is becoming an ecologically sustainable approach in recent years.In this work, we investigated the inhibitory effect of salt marsh halophyte Salicornia europaea on Prorocentrum donghaiense.Growth of P.donghaiense was not inhibited by the water extracts of S.europaea root, but the culture filtrate of S.europaea and four organic extracts.The inhibitory of organic extracts was dosedependent, and P.donghaiense was most sensitive to the methanol extract.GC-MS analysis of the methanol extract revealed 27 lipophilic compounds, in which 2-furancarboxaldehyde, 5-(hydroxymethyl)-, n-hexadecanoic acid and 2-methoxy-4-vinylphenol were the most abundant components.Together, our results suggested that salt marsh halophyte S.europaea might be applied as a new type material to control the growth of P.donghaiense.国家“863”计划项目(2007AA091704); 浙江省重点科技创新团队项目(2010R50039); 杭州市科技计划项目(20120433B19&20130533B11

Video-assisted Thoracoscopic 3D Mode Operation for Solitary Pulmonary Nodules

目的探讨三维胸腔镜手术(3d VIdEO-ASSISTEd THOrACIC SurgEry,3d-VATS治疗孤立性肺结节(SOlITAry PulMOnAry nOdulE,SPn)的效果。方法回顾性分析2013年3月~2014年3月50例SPn的资料,采用3d-VATS手术模式楔形切除结节,根据快速病理结果决定是否行肺叶切除加淋巴结清扫术。统计手术时间(去除快速冰冻时间)、术后24 H引流量、总引流量、引流管拔除时间、淋巴结清扫数及术后并发症等。结果 3d-VATS模式下,50例均行肺结节楔形切除,其中23例病理为恶性,继续行肺癌根治术,手术顺利。肺癌根治术手术时间(62±12)MIn,术中出血量(35±5)Ml,清扫淋巴结(19±3)个,术后24 H引流量(120±20)Ml,术后胸管引流时间(4±1)d,术后住院时间(7±2)d。并发症3例,其中术后肺炎2例,阵发性心房纤颤1例,均治愈。无围手术期死亡。随访2~12个月,平均6.3月。1例术后3个月脑转移,1例术后5个月肺癌复发。结论胸腔镜3d模式下治疗SPn是一种新的选择方式,安全可行,值得推广应用。Objective To evaluate the effects of surgical treatment for solitary pulmonary nodules under thoracoscopic 3D mode(3D-VATS).Methods A total of 50 cases of solitary pulmonary nodules from March 2013 to March 2014 were retrospectively analyzed.Intraoperative wedge pulmonary resection with 3D-VATS was utilized.According to intraoperative pathological findings,lobectomy plus lymph node dissection was given or not.Intraoperative time( minus fast freezing time),drainage volume for 24 h,total drainage volume,drainage tube removal time,number of lymph node dissected,and postoperative complications were recorded.Results Under 3D-VATS mode,50 cases of solitary pulmonary nodules were treated with wedge resection,including 23 cases of malignant pathology receiving radical resection, which was smoothly.The radical resection time( lung lobectomy plus lymphadenectomy) was(62 ± 12) min,the bleeding volume was(35 ± 5) ml,the lymphadenectomy number was 19 ± 3,the drainage volume for 24 h was(120 ± 20) ml,the postoperative chest tube removal time was(4 ± 1) days,and the postoperative hospital stay was(7 ± 2) days.Postoperative complications occurred in 3 cases,including 2 cases of pneumonia and 1 case of paroxysmal atrial fibrillation.No perioperative deaths were observed.All the cases were followed up for 2- 12 months,with an average of 6.3 months.Brain metastases was found in 1 case at the third postoperative month and recurrence of lung cancer was noted in 1 case at the fifth postoperative month.Conclusion Thoracoscopic 3D mode treatment for solitary pulmonary nodules is a new,safe,and feasible alternative and should be widely applied

Combined Use of Thoracoscopy and Laparoscopy in Total Laryngectomy for Cervical Esophageal Carcinoma

目的探讨胸、腹腔镜联合全喉切除治疗颈段食管的可行性和疗效。方法 2009年1月~2014年7月胸、腹腔镜联合全喉切除治疗33例颈段食管癌。胸腔镜下分离食管、腹腔镜下管胃成形、全喉切除、气管永久造口、胃咽吻合术。结果胸部手术时间40~66 MIn,平均53 MIn;腹部手术时间35~51 MIn,平均44 MIn;颈部手术时间128~150 MIn,平均139 MIn。术中出血量130~270 Ml,平均150 Ml。术后住院时间8~14 d,平均12 d。病理均为鳞状细胞癌,其中高分化2例,中分化19例,中-低分化7例,低分化5例。切缘病理学检查无癌组织残留。31例淋巴结转移。并发症:吻合口漏2例,喉返神经损伤3例,肺部感染6例,胃排空障碍2例,吻合口狭窄1例,无死亡病例。33例随访1个月~5年,术后1、3、5年生存率分别为87.9%、54.5%、45.5%。结论颈段食管癌应采取积极的手术治疗,胃咽吻合术是颈段食管癌切除后较为理想的修复手段。Objective To investigate clinical feasibility and efficacy of combined use of thoracoscopy and laparoscopy in total laryngectomy for cervical esophageal carcinoma.Methods Clinical data of 33 patients with cervical esophageal carcinoma undergoing surgical treatment in our department from January 2009 to July 2014 were analyzed retrospectively.The esophagus was separated under thoracoscopy.And laparoscopic gastroplasty,total laryngectomy,tracheal permanent colostomy,and gastric pharyngeal anastomosis were performed.Results The thoracoscopic operation time was 40- 66 min( mean,53 min),the laparoscopic operation time was 35- 51 min( mean,44 min),and the cervical operation time was 128- 150 min( mean,139 min).The blood loss was 130- 270 ml( mean,150 ml).The postoperative hospital stay was 8- 14 d( mean,12 d).Pathological examinations showed squamous cell carcinoma in all the cases,including 2 cases of highly differentiated carcinoma,19 cases of moderately differentiated carcinoma,7 cases of moderately or lowly differentiated carcinoma,and 5 cases of lowly differentiated carcinoma.No residual cancer was found at cutting edges pathologically.Among the 33 cases,lymph node metastasis was found in 31 cases.Complications included 2 cases of anastomotic fistula,3 cases of recurrent laryngeal nerve injury,6 cases of pulmonary infection,2cases of delayed gastric emptying,and 1 case of anastomotic stenosis.There was no death.All the patients were followed up for 1months to 5 years.The survival rates at 1,3,and 5 postoperative year were 87.9%,54.5%,and 45.5%,respectively.Conclusions Cervical esophageal carcinoma should be surgically treated actively.Gastric pharyngeal anastomosis is an ideal option for the repair of cervical esophageal cancer resection

AIDA通过内质网相关的蛋白质降解途径选择性下调脂肪合成途径的代谢酶从而减缓肠道脂肪吸收并防止肥胖发生

文章简介肠道对膳食脂肪吸收的效率是个人是否易患肥胖的主要决定因素之一。然而,目前人们还不清楚脂肪吸收是如何受调控并导致肥胖的。本研究表明,抑制内质网相关的蛋白质降解途径会提高甘油三酯合成途径的数个代谢酶的水平,并促进小肠对脂肪的吸收。包含C2结构域的蛋白AIDA作为一个重要国家重点基础研发计划;;\n国家自然科学基金;;\n厦门大学校长基金等支

Prevention of early childhood caries through training in parental toothbrushing and fluoride varnish application

Introduction: Early childhood caries (ECC) is common among Hong Kong preschool children. It is a disease caused by dental plaque bacteria and may be controlled by good toothbrushing habits. However, preschool children are often too young to perform effective tothbrushing, and therefore parental toothbrushing is recommended for them. The oral hygiene status of Hong Kong preschool children is usually not good and parental toothbrushing is not common. Fluoride varnish is effective in preventing dental caries in school children and adolescents but its effectiveness in preventing dental caries in preschool children is still inconclusive. Objective: To investigate the effectiveness of hands-on training in parental toothbrushing, with or without semi-annual applications of a 5% sodium fluoride varnish in preventing ECC. Methods: Children aged 8-23 months were recruited and randomly allocated to one of three groups: Group 1 - positive control, a brief oral health education to parents; Group 2 - oral health education to parents, hands-on training in parental toothbrushing, and home visits every six months to reinforce parental toothbrushing; Group 3 - application of a 5% sodium fluoride varnish onto the child’s teeth during home visits in addition to the intervention provided to Group 2. Clinical examination of the children and a questionnaire survey of the parents were conducted at baseline. Interventions for the children and parents were delivered according to their group assignment. Evaluation of the main outcome, development of new dental caries, was conducted after 24 months through clinical examination. Information on children’s oral health-related behaviors and parents’ knowledge of and attitude towards their child’s oral health was collected using a questionnaire at the 24-month follow-up. Results: Out of the 450 children recruited at baseline, 415 (92%) children were examined after 24 months and all examined children’s parents completed the questionnaire. Including both noncavitated and cavitated carious lesions, the incidences of ECC in Gp1 to Gp3 were 11.9%, 11.8%, and 17.5%, respectively (p > 0.05) and; the mean dmfs scores in Gp1 to Gp3 were 0.3, 0.2, and 0.4, respectively (p > 0.05). Proportions of parents who practiced parental toothbrushing twice a day were 62.7%, 60.4%, and 65.7% in Gp1, Gp2, and Gp3, respectively (p > 0.05). Results from a logistic regression analysis showed that children who were older, who had poorer oral hygiene, who had high frequency of sugary snack intake, who had visited a dentist during the study, and whose parents had lower education level would have a higher chance to develop new dental caries during the 24-month study period. Conclusion: Hands-on training in parental toothbrushing, reinforced by face-to-face interview every 6 months, with or without a semi-annual application of 5% sodium fluoride varnish, may not have any additional effect on preventing development of dental caries in young children compared to the standard oral health education provided to parents in Hong Kong. The child’s socio-demographic background, oral hygiene status, and frequency of sugary snack intake are related to ECC.published_or_final_versionDentistryDoctoralDoctor of Philosoph

wireless authenticated key agreement protocol

提出一种新的无线局域网认证密钥协商协议,可以提供双方相互认证及密钥确认.该协议在密钥设置上基于挑战响应协议和KAS方案,在密钥预分配上基于Diffie-Hellman协议,可以提供完美前向安全性,抵抗被动攻击、字典攻击、中间人攻击、假冒攻击等.并对协议的计算代价和通信代价进行分析

多类型混合运算的面向对象设计与实现

针对多种数据类型的混合运算问题进行了研究。讨论了面向过程的解决方案和两种可能的面向对象解决方案及不足。依据敏捷设计原则,提出了一种双层函数指针数组(虚表)的面向对象新方案。分析表明,该设计具备开放封闭性,解决了灵活性、可重用性、可维护性和效率问题