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ELECTRiCAL GEOPHYSiCAL METHODS iN AGRiCULTURE

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ELECTRICAL GEOPHYSICAL METHODS IN AGRICULTURE

第四届智能化农业信息技术国际学术会议

作者： Larisa Golovko Anatoly i.Pozdnyakov Landviser LLC828 Davis Rd.League CityTX 77573USA Moscow State University Faculty of Soil ScienceDept.of Physics and MeliorationMoscow 119899RUSSIA

＜正＞Conventional methods of electrical geophysics, i.e.,vertical electrical sounding,four-electrode probe,non-contact electromagnetic profiling,and self- potential were modified for shallow agricultural and environmental *** methods have been applied in Russia for soil research in the last forty *** the last decade methods of electrical conductivity （EC） became increasingly popular in USA and worldwide to assist in precision agriculture practices. Several on-the-go soil EC sensors were developed and successfully *** group together with Landviser,LLC has developed two portative geophysical devices,LandMapper ERM01 and ERM03 measuring electrical conductivity,resistivity and potential and suitable for mapping agricultural production fields as well as small agronomy research *** devices can also be used in lysimeters, greenhouses and on soil samples in *** with conventional methods of soil analysis,the electrical geophysical methods allowed evaluating groundwater table,salt content, depth and thickness of soil horizons,polluted or disturbed layers in soil profiles,and stone content with an estimation error ＜10%,The methods provide extensive data on spatial and temporal variations in soil electrical properties,which relate to the distributions of other essential soil *** electrical properties were incorporated with the data from conventional soil analyses via geostatistical methods to enhance the estimation of a number of soil physical and chemical properties and to assist soil *** paper presents brief introduction into the soil electrophysics and demonstrates various applications of the modified geophysical methods in soil physics,soil genesis,precision agriculture,and environmental engineering.

关键词： geophysics electrical resistivity electrical conductivity soil survey precision agriculture

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磁选工艺的进展

矿产综合利用 1989年第3期 44-50页

作者： G.i.Mathieu 廖兴碧

磁学的最新进展已经导致强磁选机、高梯度磁选机和低温超导磁选机的成功发展,这些磁选机能够有效地处理范围很宽的、过去未曾解决的分选难题。例如,新的一代磁选机能够分选粒度很细的顺磁性弱磁物料;新的磁过滤技术成功地用于废水处理... 详细信息

磁学的最新进展已经导致强磁选机、高梯度磁选机和低温超导磁选机的成功发展,这些磁选机能够有效地处理范围很宽的、过去未曾解决的分选难题。例如,新的一代磁选机能够分选粒度很细的顺磁性弱磁物料;新的磁过滤技术成功地用于废水处理中除去亚微细粒。本文评述强磁选(主要作为选矿工艺用)的过去、现在和将来。在回顾磁选简史时,还涉及到磁选理论(正是这些理论引出了现代磁选机的轮廓和设计);并介绍几种不同类型磁选机及其主要特征和性能。此外,还将列举强磁选现在的和潜在的几种用途,其中包括矿石选矿、选煤、陶瓷和化学产品的净化等。本文还要讨论“高临界温度超导磁选机”诞生的可能性。

关键词：磁选工艺选矿工艺强磁场磁选高梯度磁场稀土永磁辊式磁选机

碳源对苏云金芽胞杆菌融合基因cry1D-lacZ表达的影响

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遗传 2002年第3期24卷 301-304页

作者：张利莉 Aronson i.Arthur 喻子牛华中农业大学农业部农业微生物重点实验室美国Purdue大学生物系 in47906

本研究检测了在不同遗传背景的苏云金芽胞杆菌菌株中不同碳源对杀虫晶体蛋白cry1D -lacZ融合基因表达的影响。研究表明 ,cry1D -lacZ在同一菌株中的表达因碳源不同而异 ,在碳源相同的条件下不同菌株的表达也不相同 ,而衍生菌株HD - 133... 详细信息

本研究检测了在不同遗传背景的苏云金芽胞杆菌菌株中不同碳源对杀虫晶体蛋白cry1D -lacZ融合基因表达的影响。研究表明 ,cry1D -lacZ在同一菌株中的表达因碳源不同而异 ,在碳源相同的条件下不同菌株的表达也不相同 ,而衍生菌株HD - 133- 5的代谢途径非常特殊。琥珀酸钠作碳源时导致芽胞形成提前 ,cry1D -lacZ融合基因表达也随之提前。而以乙酸钠作碳源时 ,在不同亚种的菌株中都能高水平、持续稳定地表达。

关键词：碳源苏云金芽胞杆菌融合基因 cry1D-lacZ 表达

甲磺胺心定对家兔窦房结心房肌房室结与希氏束细胞动作电位的影响

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生理学报 1985年第5期37卷 425-436页

作者：高天礼 i.Rizos J.Senges 北京大学生物学系生理教研室德意志联邦共和国海德堡大学心脏病学系

在离体家兔右心房-房中隔与房室结-希氏束标本上,用微电极技术研究了β-受体阻断剂甲磺胺心定(Sot)对窦房结(SAN)、心房肌、房室结(AVN)、希氏束细胞的电生理效应。Sot(1.6×10—1.6×10M)对上述4种细胞的动作电位振幅和0相最大除极速... 详细信息

在离体家兔右心房-房中隔与房室结-希氏束标本上,用微电极技术研究了β-受体阻断剂甲磺胺心定(Sot)对窦房结(SAN)、心房肌、房室结(AVN)、希氏束细胞的电生理效应。Sot(1.6×10—1.6×10M)对上述4种细胞的动作电位振幅和0相最大除极速度皆无影响。Sot 能显著减慢 SAN 与 AVN 的自搏频率,并延长自律恢复时间。标本被驱动时,心房SAN 逆传时间与房-室传导时间均被 Sot 延长。Sot 还能显著延长上述4种细胞的动作电位时程与有效不应期,并且是浓度依赖性的。β-受体阻断剂甲氧乙心安(Met,1.2×10—1.2×10(M)对这些指标无影响。说明 Sot 尚具有第三类抗心律失常药物的特性。此外在8只标本上用期前刺激诱发了动作电位的快速自动发放,这是折返性室上性心动过速的电生理基础。Met 仅对1例有效,Sot 能全部制止其余7例的 AP 自动发放。这显然是由于 Sot 延长了细胞复极化过程和不应期,阻断了折返兴奋的传播,从而显示其优于β-受体阻断剂的抗心律失常效果。

关键词：甲磺胺心定甲氧乙心安窦房结房室结心房肌细胞希氏束细胞动作电位动作电位的快速自动发放

MULPiC: in-line intensive Cooling for Plate Mills

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MULPIC: In-line Intensive Cooling for Plate Mills

ice-and cryogel-soil composites in water-retaining elements in embankment dams constructed in cold regions

第十届中国钢铁年会暨第六届宝钢学术年会

作者： G.Garfitta i.Whitley Primetals Technology Ltd.

The in-line intensive cooling has become the most powerful process in modern plate mills in order to produce higher strength and value added grades. The key to success is higher cooling rate, better cooling accuracy and uniform cooling across the length and width. Many existing Plate Mills have insufficient cooling capability or no cooling equipment at all. These Plate Mills need to add or improve their cooling capacity in order to respond to the end customer demand. However, every plant has a unique layout and hence it is difficult to incorporate a standard machine to all these customers. This paper illustrates several design techniques that has been adopted to incorporate a standard cooling machine in to existing Plate and Plate Steckel Mills. Since 2002, Primetals Technologies has commissioned many MULPiC;(MULti Purpose interrupted Cooling) machines in plate mills around the world. Until recently, most of these installations were standard MULPiC;machines of 24 m in length. However, some of the existing plate producers are looking for performance improvements by adding high flow density headers in front of existing laminar cooling sections. This hybrid configuration provides several challenges for process control as well as engineering. in this paper we discuss these challenges and the benefits associated with such a hybrid cooling machine and the steps taken to ensure a smooth and rapid design, installation, start-up and fast achievement of the results. Many new customised design features, such as, flexible hoses, new flow control valve and hybrid cooling model have been introduced to improve performance and ease integrating MULPiC;in to existing systems. This enhances the product range but minimises the costs and disruption to the existing production line during installation and start-up.

关键词： plate cooling multi-purpose interrupted cooling intensive cooling MULPiC ACC DQ heat treatment 1

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Research in Cold and Arid Regions 2013年第4期5卷 444-450页

作者： N. K. Vasiliev A. A. ivanov i. N. Shatalina V. V. Sokurov The B. E. Vedeneev All-Russia Research institute of Hydraulic Engineering (VNiiG inc.)

There are a number of serious problems connected with building and repairing water-reining elements in embankment dams in cold regions. One of them is the difficulty in finding inexpensive clay materials with the necessary structural properties and using them in the winter. Another is the cracks that appear in the upper part of a dam when the core freezes to the banks, and leakage along the cracks threatens to desWoy the dam. Still another is the process of erosion at the bottom of the core which may occur through fissures in the rock foundation of a dam and in transport constructions. Also, the behaviour of water-retaining elements during eazthquakes is unreliable. All of these problems can be solved by using iceand cryogel-soil composites created by cryotropic gel formation （CGF）. Our laboratory investigations demonstrate that the materials proposed for water-retaining elements have the necessary permeable, plastic, thermophysical, and slrength properties to solve all of these problems. Certain consmactious of water-retaining elements which may prove to be both safe and cost-effective are proposed. However, these iceand cryogel-soil composites need to be field-validated before they are used in dams and transport structures in cold regions.

关键词： water-retaining elements trasport slructures cold regions cryogel-soil composites polyvinyl alcohol plastic properties

Treatment and disease management patterns for bacillus Calmette-Guérin unresponsive nonmuscle invasive bladder cancer in North America,Europe and Asia:A real-world data analysis

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Current Urology 2022年第3期16卷 147-153页

作者： Edward i.Broughton Danielle S.Chun Kyna M.Gooden Katie L.Mycock ivana Rajkovic Gavin Taylor-Stokes WW Health Economics and Outcomes Research Bristol Myers SquibbPrincetonNJUSA The University of North Carolina Chapel HillNCUSA Observational Research Department Adelphi Real WorldBollingtonUK

Background:This study examined real-world treatment and management of bacillus Calmette-Guérin(BCG)-unresponsive patients across 3 continents,including patients unable or unwilling to undergo *** and methods:Physicians actively involved in managing patients with nonmuscle invasive bladder cancer completed online case report forms for their 5 consecutive patients from the broad BCG-unresponsive population and a further 5 consecutive BCG-unresponsive patients who did not undergo cystectomy(in Japan,physicians provided a total of 5 patients across both cohorts).Results:Most patients had received 1(37%)or 2(24%)maintenance courses of *** or more maintenance BCG courses were received by patients in Japan(59%)and China(31%),while in Germany 76%of patients received only 1 *** patients became BCG-unresponsive during their first(44%)or second(22%)treatment course;in Germany,77%became BCG-unresponsive during their first treatment *** countries did not provide another course of BCG after a patient first became unresponsive,whereas unresponsive patients in Japan and China were most likely to be retreated with BCG."Untreated-on watch and wait"was the main treatment/management approach received post-BCG treatment for 42%or more of patients in most countries except China(39%)and the United States(36%)."Following treatment guidelines"was consistently the top reason for post-BCG treatment selection across all treatment ***:This study confirmed the global unmet need for patients with nonmuscle invasive bladder cancer,and found that many patients experienced periods of no treatment after not responding to BCG therapy.

关键词： Bacillus Calmette-Guérin Bladder cancer Cystectomy Treatment failure Urinary tract

Optimizing the Preparation Conditions of Bi-2223 Superconducting Phase Using PbO and PbO<sub>2</sub>

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Materials Sciences and Applications 2012年第4期3卷 224-233页

作者： N. H. Mohammed Ramadan Awad A. i. Abou-Aly i. H. ibrahim M. S. Hassan Physics Department Faculty of Science Alexandria University Alexandria Egypt Physics Department Faculty of Science Alexandria University Alexandria Egypt.

in this work, superconducting samples of type (Bi1.8Pb0.4)Sr1.9Ca2.1Cu3O10+δ were prepared, with Pb0.4 composed of Pb0.2 2+ and Pb0.24+ , at different sintering temperatures ranging from 835℃to 855℃. The prepared samples were characterized using x-ray powder diffraction (XRD), scanning electron microscope (SEM), electron dispersive spectroscopy (EDS) and differential scanning calorimetery (DSC). The superconducting properties were investigated using electrical resistivity and transport critical current density. Our results showed that the sample prepared at sintering temperature 845?C has the optimum value of superconducting transition temperature Tc and transport critical current density Jc.

关键词： High-Temperature Superconductors XRD DSC Transport Critical Current Density

Plasma-Catalytic Decomposition of 2,4-Dichlorophenol in a Dielectric Barrier Discharge with a Vermiculite ZiO2 Composite

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Advances in Chemical Engineering and Science 2023年第4期13卷 318-335页

作者： Grigoriy i. Gusev Andrey A. Gushchin Vladimir i. Grinevich Ekaterina M. Baburina Ekaterina S. Severgina Natalya E. Gordina Department of industrial Ecology Ivanovo State University of Chemical Technology Ivanovo Russia Department of Technology of inorganic Substances Ivanovo State University of Chemistry and Technology Ivanovo Russia

The paper presents comparative kinetic characteristics of the decomposition of 2,4-dichlorophenol in a dielectric barrier discharge and a combined plasma-catalytic process. Vermiculite containing 5% zirconium was used as a catalyst. The destruction processes of 2,4-DCP proceed efficiently, the degree of decomposition increases in the combined plasma-catalytic process by a factor of 1.33 and reaches 80%. The experimental results were processed according to the first-order kinetic law (R2 > 0.97), according to which the effective constants (0.36 ± 0.04) and (0.51 ± 0.03) s-1 and the decomposition rates of 2,4-DCP (106 and 123 μmol/l·s) when treating model solutions without a catalyst and with vermiculite + Zr 5%, respectively, and the energy costs are 0.012 and 0.017 molecules/100eV. The main decomposition products present in the solution have been determined to be carboxylic acids, aldehydes, the contribution of which does not exceed 2%, as well as chloride ions, and in the gas phase they are carbon dioxide and molecular chlorine (the share of which does not exceed 1.5% of total chlorine content in the system).

关键词： 2 4-Dichlorophenol Dielectric Barrier Discharge Plasma Oxygen Treatment Water Treatment Catalyst Zirconium Vermiculite