城市外来农民犯罪的特点和原因分析

城市外来农民犯罪已成为当前危害社会治安的重要问题,本文通过分析城市外来农民犯罪的特点、一般因素、主体因素,希望能对研究和预防城市外来农民犯罪提供借鉴与参考

用辛烷基硫醇单层保护Au纳米粒子制备CO氧化催化剂Au/γ-Al_2O_3

采用两相法合成出含活性组分Au的辛烷基硫醇单层保护Au纳米粒子(C8AuNPs)的正己烷溶胶,用"逐次浸润"法将C8AuNPs负载在γ-Al2O3上,经真空干燥及活化处理制得Au/γ-Al2O3催化剂.所制得的Au催化剂前体C8AuNPs/γ-Al2O3表面Au粒子平均粒径可控制在2-3nm范围内,且分布比较单一;催化剂活性评价600h后,其表面Au的粒径仍主要分布在2-4nm范围内;真空干燥温度影响Au催化剂的粒子尺寸和催化活性,随着真空干燥温度的提高,Au纳米粒子的粒径增大.将所制备的催化剂用于低温CO氧化反应,催化活性评价结果表明,经25℃真空干燥制得的2.5%(质量分数,w)Au/γ-Al2O3具有较高的活性和长期稳定性,其催化CO完全转化的最低温度为-19℃,在15℃下CO完全转化时Au/γ-Al2O3的单程寿命至少900h;4.0%(w)Au/γ-Al2O3在15℃和进料中含水条件下对CO完全氧化的单程寿命不低于2000h,可见催化剂具有强的抗潮湿中毒特性.综合上述实验结果,讨论了影响Au/γ-Al2O3催化剂活性的可能因素

聚酰胺硅胶吸附茶多酚的红外光谱研究

IR谱表明:聚酰胺硅胶吸附剂中,聚酰胺的N—H和硅胶表面OH以氢键结合,υC=O无位移;室温下该吸附剂中C=O和茶多酚中O—H作用后,υC=O和υO—H分别红移了11cm-1和18cm-1;而与咖啡因及氨基酸作用后υC=O无位移

结肠镜对急性不全肠梗阻的诊断及治疗作用探讨

目的　探讨结肠镜在急性不全肠梗阻患者中的诊断与治疗作用。方法　对我院 1994年 5月～ 2 0 0 3年 4月共 5 933例肠镜检查中的 12 2例 (占 2 .0 6 % )急性不全肠梗阻患者进行回顾性分析 ,就其发病年龄分布、梗阻病因及内镜下诊断进行分析探讨。结果　本组 12 2例急性不全肠梗阻的原因包括肠癌、息肉、粪块、炎症性肠病等多种 ,其中结直肠癌共 5 0例 ,发病率最高 ,占 4 0 .98% ,且以左半结肠癌为主。肠粪石梗阻在高龄患者中发病率仅次于结肠癌。全部患者的肠镜检查结果中无假阴性或假阳性。同时结肠镜可解除非肿瘤病变如粪石、肠粘连等所致的肠梗阻。结论　结肠镜检查对急性不全肠梗阻有重要的诊断价值并可对治疗起积极指导作用

Recruitment of cyanobacteria from sediment of the Shanzai Reservoir

采用正交试验考察了温度、光照、营养盐和物理扰动4个因素对山仔水库冬季沉积物中蓝藻复苏的影响,每个因素设置两个水平,培养周期为6d,并以蓝藻复苏量为考察指标.结果表明,温度和光照为蓝藻复苏的主要影响因子,上覆水体的营养盐、物理扰动对沉积物中蓝藻门复苏的影响作用不显著,不同的蓝藻种属对温度和光照条件的响应程度不完全一致,蓝藻门微囊藻属(MICrOCySTIS)对温度和光照的复苏响应显著,颤藻属(OSCIllATOrIA)仅对温度的复苏响应显著.同时,通过设置6.0~16.0℃之间6个温度梯度及50和2000lX两个光照梯度,进行了沉积物柱状样复苏模拟实验.结果显示,山仔水库冬季沉积物微囊藻属和颤藻属在10℃左右开始复苏,微囊藻属对光的敏感性使其更容易处于优势地位.The effects of four environmental factors,including temperature,light,nutrient and physical disturbance,on the cyanobacteria recruitment from the winter sediment in the eutrophic Shanzai Reservoir were investigated using an orthogonal experiment.Two levels were designed for each factor and the experiments lasted for six days.The results showed that temperature and light were the most important for the recruitment of Microcystis and Oscillatoria.Increasing temperature would promote the recruitment of Microcystis and Oscillatoria which would make the cyanobacteria to dominate.The effects of the overlying water nutrient status and the physical disturbance on the recruitment of Microcystis and Oscillatoria from sediments were not obvious.Based on the results,different temperatures and light intensities were designed in the simulation experiment.The incubation temperatures were increased from 6.0 to 16.0 ℃ with six levels while each temperature level was kept for four days under 2000 and 50 lx light intensities,respectively.Recruitment was calculated by the diminution of benthic cyanobacteria abundance,and moreover,by the increase of cyanobacteria abundance in the water column.It is shown that the recruitment of Microcystis and Oscillatoria started at about 10 ℃.It was also demonstrated that the migration of Microcystis from the sediments was more pronounced at higher light intensity(2000 lx) than in dark(50 lx) treatments.国家自然科学基金项目(No.41101060);福建省自然科学基金(No.2010J01250);福建省教育厅科学研究基金(No.JA10085);厦门大学近海与海洋环境国家重点实验室青年学者访问基金项目(No.MELRS1103)---

应用“血防846”等药物驱除羊只胰阔盘吸虫的试验报告

家畜胰阔盘吸虫病广泛流行于世界各地。在我国主要分布于东北、内蒙、西北一带的广大农牧区;南方的福建、江西、浙江、广东、广西、贵州等省、区也有报道。 胰阔盘吸虫不仅寄生于羊、牛、猪、骆驼等家畜,而且也可感染人体,威胁人类健康。胰阔盘吸虫寄生于家畜的胰管中,由于机械性刺激、堵塞,以及代谢产物的作用,营养的夺取,引起胰脏的机能障碍和形态改变,如胰管的高度扩张,管壁增厚,粘膜出血、溃疡、炎性细胞的浸润,整个胰脏结缔组织增生,呈慢性增生性胰腺炎。从而使胰液腺和胰岛素的生成、分泌发生改变,全

第十八届美国理论与应用力学大会总结

1会议概况2018年6月5—9日,第18届美国理论与应用力学大会(18th U.S. National Congress of Theoretical and Applied Mechanics, USNCTAM2018)在美国芝加哥召开.本次大会由美国力学国家委员会和中国力学学会联合主办,旨在探讨和交流近四年世界范围内在理论和应用力学领域的基础研究、创新技术的最新进展,吸引了来自世界各地的近千名专家学

Design for Effective Nursing Interventions

[[abstract]]近年來護理科學致力於實證實務的發展，強調在考量臨床資源的可及性下，根據最佳的研究證據，提供以病人為中心的高品質照護。在現今力求提供以實證為基礎的高品質照護及講求經濟效益的醫療環境下，如何設計與發展以理論為基礎的護理介入措施並驗證其臨床效益已成為護理專業發展的重點與趨勢，且為提升照護品質必不可少的一環。因此，本文之重點在於介紹如何以有系統的方式發展護理介入措施，並討論影響介入措施有效性的可能因素與設計階段考量的重點，包含問題確立、介入對象特質、介入理論依據、預期結果、測量工具、單一或複雜介入措施、措施內容、介入之劑量、實行方法以及真實性考量等十大要素。上述過程將有助於確保護理介入措施之嚴謹度與有效性，進而對發展與提升護理實證實務。 This article introduces systematic development and design for effective nursing interventions and discusses possible factors that may influence the interventions. Nursing science is committed to use research to develop evidence-based practice that using accessible healthcare resources to provide high quality and cost-effective patient-centered care. Design theory-based effective nursing interventions that produce measurable benefits for patient care is important to nursing professional development. Ten factors in development of interventions are: problem definition, theoretical underpinnings, desired outcomes, measurements, definition of target population, single or bundled interventions, and content of the intervention, delivery methods, dose, and intervention fidelity. This process will help to ensure the effects of nursing interventions and contribute to the development of evidence-based practice

Enhancing EFL Learners' English Reading Proficiency through Collocation Instruction

[[issue]]1

Study on the Testing System of Grain Moisture Meters

國內目前各農會及糧商所使用之稻穀水份計其廠牌及機型約有十多種，其各機型之量測範圍、適用品種、操作方法、注意事項並不相同，即使是同一廠商生產之同一型機器，其讀出值之誤差亦不相同。本研究目的在於依據行政院標準檢驗局增訂之『度量衡器施檢規範』第十七節稻穀水分計之規範，實際檢測台灣所使用之稻穀水份計是否符合此規範，並探討此規範對於各機型之水份計的適用性。本研究結果顯示必須依各種機型大小及適用之量測範圍，而有不同的規範。 水份計之內建值並非以稻穀為標準物質，機器之讀出值均比標準稻穀含水率要高，含水率越高誤差就越大。以收購濕穀而言，水份越多損失就越大，因而造成農民與收購之農會與糧商有所紛爭。實驗結果，可依據機器直接讀出值與標準稻穀之含水率，利用迴歸分析找出校正方程式，製作對照表以校正機器之讀出值。但對照表只能單獨適用一台水份計，即使同一廠牌同一型水份計亦不能互相通用。Nowadays there are about ten kinds of moisture content meters used by domestic Farmers Association and grain dealers that differ by brand and machine type. The measure ranges, applicable spices, operating methods and cautions are different for type to type. Even the same type machines made by the same company may have different readout values. The objective of this research is to actually examine if the moisture content meter used in Taiwan conform with the “Standards of grain moisture content meters” issued by Standard Examine Administration of Executive Yuan. And it discusses the applicability of the norm. The readout value of machines is always-higher than the standard grain water-contained-rate. The higher the water-contained- rate is, the greater the inaccuracy. Take buying wet grain as an example, the more water of the grain will cost the more lost which causes the argument between the farmers and purchasing farmers association and grain dealer. The result of the experiment reveals that we can use regression analysis technology on readout values and the standard grain-water-contained rate to find out the rectifying program and produce the comparison chart which can be used to check the machine readout. But the comparison chart can only be used for one moisture content meters. Even the moisture content meter of the same brand and same type can't use the same comparison chant.中文摘要-------------------------------------------------------------------I 英文摘要-------------------------------------------------------------------II 表目錄---------------------------------------------------------------------III 圖目錄---------------------------------------------------------------------IV 第一章 緒論------------------------------------------------------------1 1-1前言----------------------------------------------------------------1 1-2研究目的----------------------------------------------------------1 第二章 文獻探討------------------------------------------------------3 2-1 稻穀含水率------------------------------------------------------3 2-1.1稻穀水分含量之表示----------------------------------------3 2-1.2含水率之測定方法-------------------------------------------3 2-2穀物含水率常用之測定方法---------------------------------4 2-2.1電阻式水分計之量測性能比較----------------------------6 2-2.2 電容式水分計之性能--------------------------------------8 2-3 國際種子檢查協會施檢程序---------------------------------9 2-4 各國際組織之烘箱法標準-----------------------------------10 2-5稻穀水份計施檢規範------------------------------------------11 第三章 材料與方法----------------------------------------------------12 3-1 實驗設備--------------------------------------------------------12 3-1.1 實驗儀器------------------------------------------------------12 3-2實驗材料---------------------------------------------------------14 3-3實驗方法---------------------------------------------------------14 3-3.1標準稻穀的製作----------------------------------------------14 3-3.2標準含水率測定----------------------------------------------14 3-3.3 水分計之量測方法------------------------------------------14 第四章 結果與討論----------------------------------------------------15 4-1 稻穀水分計之性能檢定---------------------------------------15 4-1.1電容式水分計之性能檢定-----------------------------------15 4-1.2電阻式水分計之性能檢定-----------------------------------19 4-2稻穀水分計檢測數量及情形----------------------------------31 4-3 稻穀水分計之高含水率測試---------------------------------32 4-4合格標籤及對照表之使用問題-------------------------------35 4-5製作標準穀物之問題-------------------------------------------36 4-5.1台灣與日本的標準穀物之製造與貯存方法的相異點--37 4-5.2標準穀物之貯存方式以密封罐和真空包兩種做比較--40 第五章 結論與建議------------------------------------------------------44 第六章參考文獻----------------------------------------------------------46 附錄一------------------------------------------------------------------49 附錄二------------------------------------------------------------------52 附錄三------------------------------------------------------------------64 附錄四------------------------------------------------------------------8