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基于三维打印和组织工程技术构建人阴茎形态软骨支撑体

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组织工程与重建外科杂志 2017年第3期13卷 123-126,142页

作者：袁兆远宁进陈洁夏会堂陶然周广东肖开颜曹谊林潍坊医学院整形外科研究所山东省潍坊市261042 上海交通大学医学院附属第九人民医院整复外科上海市组织工程研究重点实验室上海市200011 组织工程国家工程研究中心上海市200241

目的探讨基于三维打印和组织工程技术构建人阴茎形态软骨支撑体的可行性。方法应用三维打印技术制备人阴茎形态聚己内酯/羟基磷灰石(PCL/ha)内核,并在外层包被聚羟基乙酸/聚乳酸(PGA/PLA)细胞支架,组装成人阴茎形态三维复合支架。获取... 详细信息

目的探讨基于三维打印和组织工程技术构建人阴茎形态软骨支撑体的可行性。方法应用三维打印技术制备人阴茎形态聚己内酯/羟基磷灰石(PCL/ha)内核,并在外层包被聚羟基乙酸/聚乳酸(PGA/PLA)细胞支架,组装成人阴茎形态三维复合支架。获取乳猪关节软骨细胞,培养、扩增至第1代,收取细胞,接种至复合支架,体外培养4周后植入裸鼠皮下,体内8周后取材,进行大体及组织学观察。结果人阴茎形态复合支架形态逼真,植入裸鼠体内8周后,再生出人阴茎形态的软骨支撑体,支撑体表面形成均质、成熟的软骨层,软骨层与内核支架融合良好。结论基于三维打印和组织工程技术,可形成内核为PCL/ha支架,外层包被成熟软骨的人阴茎形态软骨支撑体。

关键词：组织工程三维打印复合支架阴茎软骨

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间伐与施肥对杉木大径材培育的影响

陕西林业科技 2021年第2期49卷 47-49页

作者：夏春平季新良彭辉周红敏瞿虹潘雅妮季如春龙泉市林业局浙江凤阳山自然保护区管理处龙泉市林业科学研究院龙泉市自然资源和规划局浙江龙泉323700

在浙江省龙泉市典型人工杉木林进行了间伐加施肥、间伐不施肥和不施肥不间伐等3种措施对杉木胸径、材积生长量以及经济收入的影响研究。结果表明,间伐施肥处理效果最好,实施2 a后杉木林平均胸径生长量、蓄积增长量比间伐前都有明显增长... 详细信息

在浙江省龙泉市典型人工杉木林进行了间伐加施肥、间伐不施肥和不施肥不间伐等3种措施对杉木胸径、材积生长量以及经济收入的影响研究。结果表明,间伐施肥处理效果最好,实施2 a后杉木林平均胸径生长量、蓄积增长量比间伐前都有明显增长;在增加材积和经济收益方面间伐施肥为最明显,每年每公顷可增加经济效益22701元,比不施肥不间伐提高7625元,建议龙泉市人工杉木林推广应用。

关键词：大径材杉木经营胸径材积

循环饥饿激素加速糖尿病胃轻瘫患者胃排空:一项双盲、安慰剂、对照、交叉研究

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世界核心医学期刊文摘（胃肠病学分册） 2006年第4期2卷 40-40页

作者： Murray C.D.R Martin n.M Patterson M. A.V. Emmanuel 王志宇 Physiology Unit St. Mark‘s Hospital Harrow HA1 3UJ United KingdomDr.

Background: Diabetic gastroparesis is a disabling condition with no consistently effective treatment. In animals, ghrelin increases gastric emptying and reverses postoperative ileus. We present the results of a double blind, placebo controlled, crossover study of ghrelin in gastric emptying in patients with diabetic gastroparesis. Methods: Ten insulin requiring diabetic patients (fivemen, six type I) referred with symptoms indicative of gastroparesis received a two hour infusion of either ghrelin (5 pmol/kg/min) or saline on two occasions. Blood glucose was control led by euglycaemic clamp. Gastric emptying rate (GER) was calculated by real tim e ultrasound following a test meal. Blood was sampled for ghrelin, growth hormon e (GH), and pancreatic polypeptide (PP) levels. Cardiovagal neuropathy was asses sed using the Mayo Clinic composite autonomic severity score (range 0 (normal)- 3). Results: Baseline ghrelin levels were mean 445 (SEM 36) pmol/l. Ghrelin infu sion achieved a peak plasma level of 2786 (188) pmol/l at 90 minutes, correspond ing to a peak GH of 70.9 (19.8) pmol/l. Ghrelin increased gastric emptying in se ven of 10 patients (30 (6)%to 43 (5)%; p = 0.04). Impaired cardiovagal tone co rrelated inversely with peak postprandial PP values (p not corre late with GER. Conclusions: Ghrelin increases gastric emptying in patients with diabetic gastroparesis. This is independent of vagal tone. We propose that analo gues of ghrelin may represent a new class of prokinetic agents.

关键词：糖尿病胃轻瘫饥饿激素安慰剂对照胃排空率交叉研究实时超声显像术后肠梗阻迷走神经损伤致残

Socio-Ecological Vulnerabilities and Major Cereal Crops Production in Bangladesh

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Journal of Food Science and Engineering 2019年第6期9卷 231-243页

作者： Jatish C.Biswas A.F.M.T.Islam M.M.haque M.Maniruzzaman M.B.Hossain A.K.Choudhury U.A.naher M.H.Ali W.Kabir n.Kalra S.Rahnamayan Bangladesh Rice Research Institute Gazipur 1701Bangladesh Bangladesh Agricultural Research Institute Gazipur 1701Bangladesh Krishi Gobeshona Foundaion (KGF) Dhaka 1215Bangladesh nature Inspired Computational Intelligence (ECSE)UOITOshawa Ontario L1G0C5Canada

Bangladesh enjoys food self-sufficiency or deficiency depending on crop damages by drought, floods, cyclones, storm/tidal surges and other natural hazards. Data on climate extremes were collected from literatures. Landsat images were analyzed for water availability. Arithmetic, geometric and weighted means were calculated for community vulnerability delineation using IDRISI3.2. About 12.64% populations live in disaster prone areas and their sensitivity to exposed hazards depends on financial capabilities. Crop area damages by natural hazards were the highest in Dhaka division followed by Rajshahi division during 2009-2014. The highest economic loss ($613 million) was found in Barisal division followed by Dhaka ($198.7 million) division. Flooding was the most damaging climate extreme followed by drought and hailstorm. Rice crops are frequently exposed to climate extremes and caused economic loss of $228 million during 2009-2014. Economic losses were ha-1 because of wheat/maize areas damaged by natural hazards. The most vulnerable areas are situated in the south-west and north-west part of the country. The most affected areas (35.4% of the country) had economic losses of $940-1,170 ha-1. About 2-4.7 million households (HH) were affected by different natural hazards in different regions of the country. Flood affected HHs were predominant in northern and north-east regions of the country. Common adaptations to natural hazard exposures are crop switching and migration. The other adaptation options could be improvement of post disaster recovery efficiency through financial support, supplying seeds and other inputs based on seasonal suitability.

关键词： Cereals climate change flood cyclones storm/tidal surge drought economic loss.

腐植酸促进候选细菌丰富植物微生物群以抑制病原体

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腐植酸 2022年第3期 103-115页

作者： Maura Santos Reis de Andradeda Silva Orlando Carlos Huertas Tavares Thiago Gonçalves Ribeiro Camilla Santos Reis de Andradeda Silva Carolina Santos Reis de Andradeda Silva JoséMaria García-Mina Vera Lúcia Divan Baldani Andrés Calderín García Ricardo Luiz Louro Berbara Ederson da Conceição Jesus 李子东(译) 熊传教(译) 周欣(译) 余玲玲(译) 刘可星(译) 巴西农业研究公司里约热内卢联邦农村大学弗洛米嫩塞联邦大学西班牙纳瓦拉大学华南农业大学资源环境学院

腐植酸(ha)通过调节植物的激素和氧化还原代谢来刺激几种植物种类的生长,然而,关于ha与植物相关菌群的关系鲜有报道。本文中,我们假设ha效应与植物相关细菌群落的调控同时发生,水稻在施用或不施用ha(80 mg/L)的营养液中生长264 h,每24 ... 详细信息

腐植酸(ha)通过调节植物的激素和氧化还原代谢来刺激几种植物种类的生长,然而,关于ha与植物相关菌群的关系鲜有报道。本文中,我们假设ha效应与植物相关细菌群落的调控同时发生,水稻在施用或不施用ha(80 mg/L)的营养液中生长264 h,每24 h评价1次植株生长,施用240 h后取样品进行16S rRnA基因测序。第1次施用ha后,从100 h到264 h植株净同化率、绝对生长率和相对生长率增加,根系体积和其他生长变量在植物生长周期的不同时间受到刺激。宏基因组分类揭示,使用ha后细菌群落结构和组成受到影响,ha处理的根部,群落成员间的相互作用增强,显示更多关联更密切的细菌群落,鞘氨醇菌属(Chitinophaga)和粘液杆菌属(Mucilaginibacter)是ha处理后根系的优势菌属。据报道,这些细菌能产生酶,降解真菌、卵菌和线虫卵壁中的化合物。铁载体产生者和植物生长促进者——假单胞菌(Pseudomonas)和酸杆菌Gp1(Acidobacteria Gp1)均富集,虽然丰度较低。鉴于这些结果,我们认为植物组建这些微生物是为了应对ha—根互作引起的胁迫。我们的研究结果首次表明,受ha刺激的植物可能采用组建细菌群落成员的生态策略,这些细菌群落成员是抑制病原体的候选者,因而参与植物防御.

关键词：腐殖质宏基因组分类植物微生物群植物生长促进植物-微生物互作植物防御

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肝细胞腺瘤:不同治疗方案的成本效益评估

国际医学放射学杂志 2009年第6期 575-575页

作者： F.J.F.van der Sluis J.L.Bosch T.Terkivatan R.A.deMan J.n.M.IJzermans M.G.MyriamHunink 邓怀福 Department of Epidemiology Erasmus University Medical Centre RotterdamDr Molewaterplein 50Room Ee 21-403015 GE Rotterdamthe Netherlands

目的评价多种治疗方案对女性肝细胞腺瘤(无其他系统疾病)(heatocellular adenoma,ha)的疗效、成本以及成本效益。材料与方法采用Markov模型评估预期高质量生存时间[高质量生存年限,quality-adjusted life-years(QALYs)],生存成本(以200... 详细信息

目的评价多种治疗方案对女性肝细胞腺瘤(无其他系统疾病)(heatocellular adenoma,ha)的疗效、成本以及成本效益。材料与方法采用Markov模型评估预期高质量生存时间[高质量生存年限,quality-adjusted life-years(QALYs)],生存成本(以2007年美

关键词：肝细胞腺瘤治疗方案射频消融术成本财政管理