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喷灌技术 1992年第1期 11-15,64页

作者：岳兵水科院水利研究所辽宁省水科所沈阳市塑料七厂

经过10多年的科学研究,我国在微灌设备研制方面取得了一定进展,先后生产试制了微灌用聚乙烯管材与管件,研制出了一批灌水器和过滤、施肥装置,促进了微灌技术的推广运用。对微管灌水器进行的系列化研究,降低了工程造价,提高了灌水质量。

关键词：滴灌设备管材管件大流量滴头

Influence of SLYWG on malignant tumor ascites

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沈阳药科大学学报 2008年第S1期25卷 83-84页

作者： YANG Tian,XU Feng,WU Tian-yu(shenyang Pharmaceutical University,shenyang 110016,China)

Objective To search the effect of Chinese traditional medicine "Shang Lu Yu Wang Gao"(SLYWG)on the ascites induced by tumor,and its *** The tumor ascites model and diuretic experiments were introduced to evaluate the effect of *** characteristics,the tumor cell counting,volume of the ascites,protein content in ascites,the characters of ascites,the life duration of S180 tumor bearing animals as the indexes of *** diurtic experiments were performed on rats nad rabbits,the osmotic pressure,K+,Na+,Cl-,Ca2+ and pH in urine were *** The inhibitions to ascites of SLYWG were displayed in three dosage(3..g·kg-1,15 g·kg-1 and 7.5 g·kg-1).Ascites caused by tumor was significantly inhibited by the local administration of *** increase of mice ascites was slow down,the content of ALB and the TP in ascites were decreased,the surviving time of mice was *** had remarkable diuresis effect on the rats and rabbits,it could reduce the osmotic pressure of urine,decrease the exclude of K+ but had no effect on the Na+,Cl-,Ca2+ and pH in *** Tumor ascites was significantly inhibited by the ventral administration of *** had diuretic effect in rats and rabbits,it reduced the osmotic pressure of urine,decrease the exclude of K+ but had no effect on Na+,Cl-,Ca2+ and pH of urine.

关键词： SLYWG phytolacca acinosa pharbitidis malignant tumor ascites alleviate water retention diuresis

Soil Enzyme Activities with Greenhouse Subsurface Irrigation

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Pedosphere 2006年第4期16卷 512-518页

作者： ZHANG Yu-Long WANG Yao-Sheng College of Land and Environmental Sciences Shenyang Agricultural University Shenyang 110161 （China）

Various environmental conditions determine soil enzyme activities, which are important indicators for changes of soil microbial activity, soil fertility, and land quality. The effect of subsurface irrigation scheduling on activities of three soil enzymes (phosphatase, urease, and catalase) was studied at five depths (0-10, 10-20, 20-3.. 3..40, and 40-60 cm) of a tomato greenhouse soil. Irrigation was scheduled when soil water condition reached the maximum allowable depletion (MAD) designed for different treatments (-10, -16,-25,-40, and-63..Pa). Results showed that soil enzyme activities had significant responses to the irrigation scheduling during the period of subsurface irrigation. The neutral phosphatase activity and the catalase activity were found to generally increase with more frequent irrigation (MAD of -10 and -16 kPa). This suggested that a higher level of water content favored an increase in activity of these two enzymes. In contrast, the urease activity decreased under irrigation, with less effect for MAD of -40 and -63..Pa. This implied that relatively wet soil conditions were conducive to retention of urea N, but relatively dry soil conditions could result in increasing loss of urea N. Further, this study revealed that soil enzyme activities could be alternative natural bio-sensors for the effect of irrigation on soil biochemical reactions and could help optimize irrigation management of greenhouse crop production.

关键词： irrigation scheduling soil enzyme activity subsurface irrigation tomato

Study on the proposed environmental guidelines for Cd, Hg, Pb and As in soil of China

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Journal of Environmental Sciences 1992年第1期4卷 66-73页

作者： Wu Yanyu, Tian Junliang Zhou QixingInstitute of Applied Ecology, Chinese Academy of Sciences, shenyang 110015, ChinaNorthwest Institute of water and Soil Conservation, Chinese Academy of Sciences, Shaanxi 712100, China

This paper deals with the soil-environmental standard. According to the current situation of researching on the soil-environmental quality guideline at home and abroad, and on the basis of the foundations and principles of enacting the soil-environmental standard, the soil environment quality guideline values of Hg, Cd, Pb and As were suggested.

关键词： soil-environmental standard soil guideline heavy metal functional land use soil background content.

EFFECTS OF STRESS RATIO AND FREQUENCY ON CORROSION FATIGUE CRACK GROWTH MECHANISM IN LOW ALLOY STEELS

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Acta Metallurgica Sinica(English Letters) 1993年第6期6卷 373-378页

作者： HAN Enhou HAN KYumei ZHENG Yuli KE Wei Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,shenyang,China postdoctoral,Institute of Corrosion and Protection of Metals,Academia Sinica,shenyang 110015,China Inst of Corrosion and Protection of Metals Shenyang China

Based on theoretical analysis about local strain,strain rate and dissolving rate at crack tip, the corrosion fatigue crack growth rate of steels ZG20SiMn and SM50B-Zc in fresh water and 3..% NaCl solution were measured experimentally,and the PH and electrode potential within crack were also measured continuously along with crack *** showed that the increase of crack growth rate,caused by both decreasing frequency and raising stress ratio,was mainly accelerated by hydrogen embrittlement.

关键词： corrosion fatigue stress ratio crack growth electrode potential steel ZG20SiMn steel SM50B-Zc

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船舶破舱横摇数学模型及理论分析

系统仿真学报 2008年第22期20卷 6298-6301页

作者：赵为平郭晨金鸿章大连海事大学自动化与电气工程学院大连116026 沈阳航空工业学院自控系沈阳110034 哈尔滨工程大学自动化学院哈尔滨150001

船舶在航行过程中有可能发生船体破损以至船体进水的情况。因此,应该考虑船舶的抗沉性和应对措施,使船舶在一定程度损伤后仍具有足够的航行能力。在对船舶对称破舱的情况进行分析的基础上,采用槽型水舱理论建立了船舶破舱后横摇的数学模... 详细信息

船舶在航行过程中有可能发生船体破损以至船体进水的情况。因此,应该考虑船舶的抗沉性和应对措施,使船舶在一定程度损伤后仍具有足够的航行能力。在对船舶对称破舱的情况进行分析的基础上,采用槽型水舱理论建立了船舶破舱后横摇的数学模型,并对不同破舱水位和流动阻尼情况下的船舶横摇特性作了仿真和分析。最后根据船舶破舱数学模型,讨论并给出了船舶破舱情况下系统的绝对稳定条件。

关键词：船舶破舱横摇数学模型仿真

Standard potential of the Ag-AgCl electrode and acidity constant of glycine at constant molality of NaCl in glucose-water mixed solvents from 278.15 to 3...15 K

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Chinese Journal of Chemistry 1993年第3期11卷 210-216页

作者： WANG,Jie YANG,Jia-Zhen Department of Chemistry,Liaoning University,shenyang 11003. Department of Chemistry Liaoning University Shenyang 110036

Standard electrode potentials E° of Ag-AgC1 electrode in molality scale and acidity constants of glyeine pK_1° at constant molality of NaCl (1.0 mol·kg^(-1)) in 5 and 15 mass% glucose-water mixed solvents over a range of temperatures from 278.15 to 3...15 K were determined from precise emf *** dependence of acidity constant on temperature is given as a function of the thermodynamic temperature T by an empirical equation, pK_1° =A_1(K/T)-A_2+A_3../K).The corresponding thermodynamic quantities of the first dissociation process of glycine were calculated and the effects of both tho solvent and the salt on them were also discussed.

关键词： Standard potential of the Ag-AgCl electrode and acidity constant of glycine at constant molality of NaCl in glucose-water mixed solvents from 278.15 to 3...15 K AgCl NaCl

Effect of Cu on the Spinodal Decomposition of AlZn Alloy with Symmetrical Composition

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Journal of Materials Science & Technology 2005年第6期21卷 836-840页

作者： Shiming HAO+, Yuping REN, Hongxiao LI, Dapeng WANG and Gang ZHAOCollege of Materials and Metallurgy, Northeastern University, shenyang 110004, China College of Materials and Metallurgy Northeastern University Shenyang 110004 China

The effect of Cu addition on the spinodal decomposition of the Al-Zn alloy with symmetrical compositions has been investigated by X-ray diffraction analysis. It is found that the single fcc phase can be obtained in the AlZn alloy with the addition of 2 at. pct Cu after solution treatment at 400℃ and water quenching to room temperature. The modulation structure occurs in two types of alloys aged at room temperature for 3..min. The spinodal process remarkably slows down above or at the three phase equilibrium temperature, particularly at room temperature due to the addition of 2 at. pct Cu. The spinodal time increases by 20 times when aging at 3..℃ and by more than 3..times when aging at room temperature.

关键词： Al-Zn(-Cu) alloy Spinodal decomposition Lattice parameter X-ray diffraction

Preparation and Properties of a Novel water Soluble Core Material

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Journal of Materials Science & Technology 2010年第3期26卷 270-275页

作者： Weiguo Jiang,Jiasheng Dong,Langhong Lou,Ming Liu and Zhuangqi Hu Institute of Metal Research,Chinese Academy of Sciences,shenyang 110016,China [a] Institute of Metal Research Chinese Academy of Sciences shenyang 110016 China

A novel water-soluble core material composed of polyethylene glycol,sodium chloride,mica powder and plasticizer was *** compressive strength,bend strength,hygroscopic coefficient and the material solubility in water were *** results show that the compressive yield strength of the soluble core can reach 1 MPa and the highest compressive strength can reach 4 MPa,the bend strength is as high as 6.65 MPa,the hygroscopic coefficient is lower than 0.22%/month and the solubility of suitable core material is 3..7-55.75 g/（min·m 2）.The wax pattern with undercuts was prepared successfully by using the novel water-soluble core material.

关键词： Investment cast Core materials Mechanical properties Microstructure

Synthesis and Structural Determination of Nine-Coordinate K[Gd~Ⅲ(edta)(H_2O)_3..5H_2O

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Rare Metals 2001年第4期20卷 224-229页

作者： Jun Wang, Xiangdong Zhang, Damin Fan, Xiao Ling Department of Chemistry, Liaoning University, shenyang 11003.. China 辽宁大学辽宁沈阳 110036

The title complex K [Gd~Ⅲ(edta)(H_2O)_3..5H_2O was synthesized, where edta denotes ethylenediamine- tetraacetic acid. The crystal and molecular structure of the complex were determined by single-crystal X-ray structure analysis. The crystal belongs to an orthorhombic crystal system and an Fdd2 space group. The complex anion [Gd~Ⅲ(edta)(H_2O)_3..has a pseudo-monocapped square antiprismatic nine-coordinate structure in which six coordinate atoms (two N and four O) are from an edta ligand and three water molecules coordinate to Gd~Ⅲ ion directly. It can be predicted that Gd~Ⅲ ion can also form a nine-coordinate complex with ttha (triethylenetetraminehexaacetic acid) li- gand, so the GdⅢ complex anion [Gd~?é¨(r)(Httha)]~￡¨2-￡(c) can supply a free non-coordinate carboxyl group (-C-CH_2COOH) used for molecular embellishment in some biological molecules to form a contrast agent of Magnetic Resonance Imagine (MRI) with targeting function.

关键词： Gd~Ⅲ ethylenediaminetetraacetate (edta) complex structure