The Corner Point Processing and Absorbing Boundary Conditions in Finite-Difference Time-Domain

ABC(Absorbing Boundary Conditions) is an important component part in FDTD(Finite-Difference Time-Domain) method,the processing of corner point affect ABC itself,that is,the inadequate processing of them may cause unnaturally results.The processing of corner points in traditional second-order absorbing boundary condition for 2D case is complex,and it is difficult to extend to 3D case.For these reasons,a simpler method about the corner points based on unidirectional out traveling wave absorbing theorem is discussed in this paper,and validated by a numerical method proposed by authors.The results show that this method satisfies the demands for ABC and is more efficient and more precise.Meanwhile,it is easy to extent to 3D case.     

水稻专用控释肥的养分释放规律及对养分利用的影响

110161 辽宁省沈阳市东陵区东陵路120号     

小豆种子的萌发特性研究

本研究通过小豆种子的吸水试验、发芽试验及田间试验 ,对小豆种子的萌发特性进行了研究。在参试的 4个小豆品种中 ,白小豆的发芽势和发芽率最高 ,其次是绿小豆和红小豆 ,冀红小豆 4号最低。结果表明 :小豆种子的发芽势、发芽率与其吸水速率、吸水量密切相关。     

Thermal Barrier Properties of Gradient Coating on a Ceramic Metal

In this paper,the adherence and thermal barrier properties of A12O3-based ceramic metal gradient coating with the method of oxyacetylene-flam-spray are studied. The results show that the physical and chemical compatibilities between the coating and the substrate are improved by adding Cu,Ni/Al and the gradient coating,and to relax thermal stress and interface stress in coat and at the same time to increase adherence property of coating. Besides,the gradient coating has good spalling resistance,erosion resistance to high temperature liquid iron and the effect of thermal barrier properties is remarkable.     

Technology and Application of Multi-Arc Ion Plating

Multi-Arc Ion plating technology is an improved method of Ion plating and it is a surface coating technology that uses arc as the fountain of vaporizing. It plats rapidly with fine-tissued coat. It can be applied to many aspects such as high-rigidity coating of tools and mould and decoration coating more widely and occupy a more important place. This paper introduces the principle and characteristics of multi-arc ion plating, and on the conclusion of many studies and experiments done in the previous years, this paper also analyses the development and application of multi-arc ion plating technology in some areas. It will offer favorable reference for the study and application of multi-arc ion plating technology in future.     

DETERMINATION OF COPPER ZINC OF HUMAN HAIR BY SOLID SAMPLE INTRODUCING DIRECTLY

The method of the solid sample directly introducing the atomizer for determining the copper and zinc of man's hair is studied in this paper. With this method, we use coating Lanthanum inner mini-cup with Hitach 180-80 Zeeman Atomic Absorption Spectroscopy standard cup atomizer and predigestion. Overcomming long-time chemistry pretreatment, results are very satisfactory with optimum program conditions. This method has the advantages of accuracy and rapid and good repeatability. (relative standard deviation is about 5 precent).     

The Effect of the Components of VAE Latex Modified Cementitious Compound Waterproofing Coating on Its Properties

In this paper the effect of the components of VAE latex modified cementitious waterproofing coating on its properties is studied. The results show that the tensile strength, bond strength and water resistance of the compound water proofing coating increase greatly in comparison with those of the coating without addition of cement. This compound coating is a new type of waterproofing material with excellent performance.     

酱油渣不溶性膳食纤维的功能特性及其应用研究

研究酱油渣中不溶性膳食纤维的膨胀性、持水能力、持油性、亚硝酸根离子吸附性,以及阳离子交换能力等功能特性,及其在桃酥中的应用。结果表明,酱油渣不溶性膳食纤维具有较好的膨胀性、持水能力、持油性和一定的阳离子交换能力,对亚硝酸根离子的吸附性能随着时间的增加而增大,120min时的吸附性趋于饱和,吸附率高达83.24%,且在酸性条件下的吸附性能更佳。应用实验表明,在桃酥中添加适量的酱油渣不溶性膳食纤维,不仅对桃酥的口感、色泽及组织形态等方面的影响较小,而且其保健功能有很大的提高。     

谷子抗除草剂杂交种去除假杂种技术研究

目前谷子杂交种所用不育系大多属于高度雄性不育系,有5%~10%的自交结实率,因此谷子两系杂交种会有一定比例的假杂种。传统去除假杂种方法是在苗期喷施除草剂去假留真。为了研究更简便、安全、有效去除假杂种的方法,选用拿捕净和咪唑乙烟酸2种除草剂,2019年设置6个浓度（0.2%、0.4%、0.6%、0.8%、1.0%和1.4%）的除草剂药液浸泡种子,筛选最佳浓度;采用阴干、晒干和烘干3种方式,筛选最佳干燥种子方法;2020年把除草剂配入包衣剂对杂交种进行包衣试验,2种除草剂分别设置6个和3个浓度配比。结果表明,采用药液浸泡法时,2种除草剂均采用0.8%浓度最佳,种子均匀沾上药液后捞出阴干或烘干较好。采用包衣方法时,长杂谷466（抗拿捕净类型杂交种）采用“50g包衣剂拌4~5mL拿捕净包衣2.5kg种子”、长杂谷2922（抗咪唑乙烟酸类型杂交种）采用“50g包衣剂拌3mL咪唑乙烟酸包衣2.5kg种子”的方法最佳。     

Researches on Heat Flow Meter with Own Intellectual Property

In this paper ,the innovational research is based on widely absorbing patents and applied technique at home and abroad and pointing out the disadvantage and ameliorative method of heat/low meter. According to the principle of therrnopile, and the three - dimensional loop wire laying is substituted by new - style plane wire laying. The construction and manufacture of new - style heat flow meter is declared. The new method will facilitate the manufacture and reduce the cost and the high precision feeler is assured by consistent line length, capacitance, resistance and inductance and the cost of determination in present demarcation will be cheaper than traditional feeler of heat flow meter. The high precision energy saving detection instrument is provided for the field of heat energy.     

ROLE OF BaO IN MOLD POWDER USED IN CHNTINUKUS CASTING KF STEEL

In this paper, the role of BaO in mold powder used in continuous casting of steel is studied. The pricipal content of the study is about the effect of BaO on melting temperature, Viscosity, and capacity of absorbing inclusion and glassing of molten mold powder. Experiment results reveal that to add BaO into mold powder can decrease the melting temperature and viscosity, and prevent the formation of high melting point particle and crystallizing of mold powder, suitable BaO content in mold powder is quite helpful to increase the capacity of absorbing inclusion of molten mold powder, and to improve the lubrication effect of molten powder film between mold and billet.     

光合细菌和生物包衣对土壤酶活与油菜产量的影响

为了探究在光合细菌施用下,生物包衣对油菜生长的影响.以四川油菜主栽品种川油36号为试验材料,采用大田试验,研究了生物包衣(内生芽孢杆菌进行种子包衣,播种前施用光合细菌菌液)、化学包衣(10％氰霜唑悬浮剂进行种子包衣)和未包衣处理对油菜根肿病发生、土壤酶活性变化及产量性状等的影响.结果 表明:包衣处理后,油菜根肿痛发生率...     

高吸水性树脂合成和抗旱保苗性能的研究

高吸水性树脂在土壤中具有良好的吸水和保水性能。纸床发芽和盆栽试验表明，可显著提高小麦、玉米苗期的抗旱能力。     

苹果渣中高纯度多酚物质的制备及体外抗氧化活性评价

研究了苹果渣多酚经大孔吸附树脂纯化前后的体外抗氧化活性的变化情况。考察了自然风干、50℃烘干和真空冷冻干燥苹果渣对多酚提取量的影响;通过对比AB-8,XDA-5和D4020三种大孔吸附树脂的静态吸附和解吸性能,并进行筛选,对比了苹果多酚经大孔吸附树脂纯化前后对DPPH自由基、羟基自由基和超氧阴离子自由基的清除能力。结果表明,真空冷冻干燥苹果渣的多酚提取量最大;D4020静态吸附率和解吸率均最高;纯化后苹果多酚的抗氧化活性明显提高。     

超临界CO2为快挥发溶剂丙烯酸清漆喷涂研究Ⅰ——超临界CO2对成膜物质物性影响、涂料配方选择

本文用FT-IR及粘均分子量法对超临界CO2作用前后的丙烯酸树脂进行表征。用气相色谱测定了超临界CO2作用前后的醋酸正丁酯、二丁酯溶液浓度的变化,并在不同压力下测定了65℃时醋酸正丁酯在超临界CO2中的偏摩尔体积。结果表明：超临界CO2不会改变丙烯酸清漆的成膜物质丙烯酸树脂及其它成分的性质,选择醋酸正丁酯为清漆的活性溶剂,可促进超临界CO2对涂料中丙烯酸树脂的溶胀,更有效地降低涂料液的粘度;选择二丁酯作为增塑剂是可行的。     

氮素亏缺对冬小麦根系生长发育的影响

采用盆栽试验研究了不同生育阶段氮素亏缺对冬小麦根系生长发育及活力的影响.结果表明,越冬期和拔节期氮素亏缺不仅可以明显减小根长、根条数和根体积,而且可以减少根吸收总面积、活跃吸收面积、活跃吸收面积百分比、根比表面及根系活力,以越冬期更为显著.在冬小麦根系生长发育较为重要的苗期、越冬期和拔节期,前一生育期氮素     

牡丹永生花软化护形后力学特性研究

为解决真空冷冻干燥后的干花容易断裂、破碎,且易吸潮不利于贮藏运输的问题,以经过真空冷冻干燥后的牡丹干花为材料,利用超声雾化技术对其进行软化护形处理,并利用质构仪测量其软化护形后牡丹干花的刺穿强度和拉伸强度。结果表明,经过软化护形液处理过后的干花其刺穿强度和拉伸强度明显大于未处理的干花,其力学特性也优于后者。     

造纸法再造烟叶涂布率与有机化学成分对应关系研究

针对目前烟草行业现有一些检测方法在造纸法再造烟叶产品涂布率检测方面存在不适用的问题,通过造纸法再造烟叶成品中总糖、还原糖、总植物碱、总氮等有机化学成分在涂布液及片基中含量分布分析、各有机化学成分经涂布烘干工艺处理后含量变化分析及各有机化学成分含量与涂布率之间对应关系的研究,提出并开发了一种以造纸法再造烟叶有机化学成分来表征产品涂布率的方法。结果表明,当造纸法再造烟叶涂布率在38%~46%的范围内,总糖、还原糖、总植物碱的含量与涂布率之间存在正相关的线性关系,通过线性回归分析拟合得出的公式中线性相关系数R²分别为0.966、0.997、0.953。通过在线生产取样检测验证,实测涂布率与计算涂布率的平均偏差小于2%,说明该离线检测方法是一种适合于测定造纸法再造烟叶成品涂布率的准确、可行的方法,为造纸法再造烟叶涂布率检测方法的探索和烟草行业造纸法再造烟叶涂布率的研究提供一定的依据和基础。     

超微细化淀粉涂膜保鲜鸡蛋的研究

以超微细化淀粉为材料涂膜新鲜鸡蛋,通过单因素试验和正交试验,确定制备超微细化淀粉涂膜液的最佳条件,比较超微细化淀粉与液体石蜡、大豆蛋白和壳聚糖的保鲜效果。结果表明,超微细化淀粉涂膜液可以有效的减少鸡蛋的失质量;超微细化淀粉涂膜液的最佳条件是淀粉球磨15 h,质量分数为5.67%,pH值为6,此条件下超微细化淀粉保鲜鸡蛋的效果差于液体石蜡而优于大豆蛋白和壳聚糖。     

A plating method without coarsing for metallization of fiber bragg grating in intelligent metal structures

In order to protect the system of fiber Bragg grating (FBG) and keep its sensing performance on a high score, an adhesive-free bond which is considered as the alternative for epoxy adhesive technology is demanded. An electroless Ni-P plating process without coarsing for fiber Bragg grating was presented. With this plating method, the FBG was coated with a metal clad of Ni-P. By Scanning Electron Microscope (SEM), Energy Dispersive Spectrometer (EDS), X-ray diffraction (XRD) and Temperature vibration tests, the composition, structure and adhesion force of the plating coatings were analyzed. And the results indicate that the coating is smooth, flat and compact. The solder ability of Ni-P clad was tested by welding the FBG into metal components, and the results reveal that the coating films can meet the requirements of an adhesive-free bond.