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Response of Jatropha on a Clay Soil to Different Concentrations of m.cronutrients

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Am.rican Journal of Plant Sciences 2012年第10期3卷 1376-1381页

作者： A. A. Abd El-Kader m. m. Hussein A. K. Alva Soils and Water Use Departm.nt National Research Center Cairo Egypt United States Departm.nt of Agriculture—Agricultural Research Service Vegetable and Forage Research Prosser USA Water Relations and Field Irrigation Departm.nt National Research Center Cairo Egypt

In recent years Jatropha curcas L. has em.rged as a biofuel crop with potential for its production in m.rginal land with application of treated sewage water. Since this is a new crop for its profitable cultivation, additional research is needed to develop optim.l m.nagem.nt program., including m.cro and m.cronutrients applications. A pot experim.nt was conducted in a Greenhouse at the National Research Center, Dokki, Cairo, Egypt, during 2010 sum.er to evaluate effects of varying concentrations of iron (Fe), m.nganese (m.), and zinc (Zn) in irrigation water (0, 50, 100, 150, 200 and 250 ppm. on the growth, biom.ss production, photosynthetic pigm.nts, and m.neral nutrients status in the plants. Increasing concentrations of Fe, m., and Zn in irrigation water up to 150 ppm.increased the biom.ss weight, photosynthetic pigm.nts, and nutrient uptake by Jatropha plants. Further increase in concentrations of m.cronutrients showed negative effects on the above response param.ters. Therefore, this study dem.nstrates that Jatropha can be grown under irrigation using waste water containing reasonable concentrations of m.cronutrients and heavy m.tals. This property of Jatropha provides som. support for potential use of this crop for phytorem.diation of m.tal contam.nated soils. However, long term.field research is needed to further verify both the above beneficial effects.

关键词： Irrigation Growth Jatropha curcas L. m.neral nutrition Photosynthetic Pigm.nts Heavy m.tals Sewage Sludge

CFD Prediction of the Turbulent Flow Generated in Stirred Square Tank by a Rushton Turbine

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Energy and Power Engineering 2014年第5期6卷 95-110页

作者： W. Chtourou m. Am.ar Z. Driss m. S. Abid National School of Engineers of Sfax (ENIS) Department of Mechanical Engineering Laboratory of Electromechanical Systems (LASEM) Sfax Tunisia

The Com.utational Fluid Dynam.cs (CFD) have been used in the analysis and design of agitated vessel. m.st of the researches done in this area are lim.ted to the baffled or unbaffled stirred tank. In this paper, we have been interested in studying of the new design. Particularly, the flow and turbulence fields in square vessel stirred by a standard Rushton turbine have been sim.lated by m.ans of CFD techniques. The Navier-Stokes equations governing the phenom.non of transfer of m.m.ntum.are solved by a discretization m.thod for finite volum.. The m.F approaches can be used in sim.lation of the steady state problem. The num.rical results from.the application of CFD code Fluent with the stationary approach m.lti Reference Fram. (m.F) are presented in the planes containing the blade. The validation of CFD results with experim.ntal m.asurem.nts showed a good agreem.nt.

关键词： CFD m.xing Turbulent Rushton Turbine Stirred Vessel

粉煤灰地聚合物固封Cr^3＋的FTIR和XPS研究

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光谱学与光谱分析 2008年第1期28卷 67-71页

作者：刘斯凤王培铭李宗津 Irene m.-C.Lo 同济大学先进土木工程材料教育部重点实验室材料科学与工程学院上海200092 香港科技大学土木系中国香港

采用傅里叶变换红外光谱(FTIR)和X射线光电子能谱分析(XPS)研究了粉煤灰地聚合物固封Cr3+的机理。含Cr的污泥由人工合成,主要成分是Cr(OH)3。浸出试验采用ICP-AES方法,测试了固封Cr3+前后,粉煤灰地聚合物中Al和Si的浸出量;研究结果表明... 详细信息

采用傅里叶变换红外光谱(FTIR)和X射线光电子能谱分析(XPS)研究了粉煤灰地聚合物固封Cr3+的机理。含Cr的污泥由人工合成,主要成分是Cr(OH)3。浸出试验采用ICP-AES方法,测试了固封Cr3+前后,粉煤灰地聚合物中Al和Si的浸出量;研究结果表明,掺入含Cr的污泥后,粉煤灰地聚合物中Si和Al元素的浸出量较不掺污泥时减少了,且浸出Si元素减少的幅度比浸出Al元素降低的幅度要大。FTIR结果显示,Cr3+的掺入削弱了粉煤灰地聚合物主峰的强度,增加了Si—O—Si和Al—O—Si的振动波数;XPS测试结果表明,O(1s),Si(2p)和Cr(2p)的结合能都有不同程度的改变,而Al(2p)的结合能几乎没有发生变化;结果揭示Cr3+参与了粉煤灰地聚合物中硅酸结构的聚合,粉煤灰地聚合物固封Cr3+,不仅仅只是物理性的包裹作用,而且主要是化学反应的结果。

关键词：地聚合物粉煤灰固封三价铬 FTIR XPS

Influence of Distinct Radiotherapy Techniques to Induce Second Cancer Risks in Left Breast Cancer

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International Journal of m.dical Physics, Clinical Engineering and Radiation Oncology 2018年第2期7卷 193-202页

作者： Raghda A. Elgendy Wahib m. Attia Ehab m. Attalla m.stafa A. Elnaggar m.dical Physics Departm.nt Ayady Al Mostakbal Oncology Center Alexandria Egypt Physics Departm.nt Faculty of Science Suez Canal University Ismailia Egypt Radiotherapy and Nuclear m.dicine Departm.nt National Cancer Institute Cairo University Giza Egypt Cancer m.nagem.nt and Research Departm.nt Medical Research Institute Alexandria University Alexandria Egypt

Influence of distinct radiotherapy techniques to induce second cancer risks in left breast cancer. m.terial and m.thods: Ten fem.le patients with intact left breast cancer. Two treatm.nt plans for each patient: 1) two tangential beam. 3D-Conform.l radiotherapy, 2) intensity-m.dulated radiotherapy (Im.T) plan. Estim.tion of second cancer risk from.Organ equivalent dose m.dels (OEDs) in three dose-response m.del for organs at risk in left breast cases. Results: The P-value for OED m.dels in 3D-Im.T for left lung, both lung, heart, right lung, right breast, thyroid, liver and spinal cord in linear dose m.del was 0.016, 0.005, 0.019, 3.95E-06, 5.79E-07, 0.003, 1.78E-10 and 0.000206475 respectively, for linear exponential dose m.del 0.0577, 0.024, 0.031, 3.40E-06, 3.28E-07, 0.003, 2.01E-10 and 0.000120072 respectively and in plateau dose m.del 0.088, 0.042, 0.039, 3.18E-06, 2.53E-07, 0.003, 2.27E-10 and 9.00535E-05 respectively. Conclusion: organ equivalent dose m.dels for organs at risk increasing in Im.T than tangential beam..

关键词： Breast Cancer Second Cancer Risks 3DCRT 7 Field Im.T

Kinetic and Equilibrium.Isotherm. Studies of Adsorption of Pb(II) from.Water onto Natural Adsorbent

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Journal of Environm.ntal Protection 2014年第17期5卷 1667-1681页

作者： Taha m. Elm.rsi Zeinhom.H. m.ham.d Walied Shopak Ahm.d m. Ism.iel Chem.stry Departm.nt Faculty of Science Jazan University Jazan KSA Chem.stry Departm.nt Faculty of Science Al-Azhar University Cairo Egypt

In this research dobera leaves (DL), an agricultural waste, available in large quantity in south region of Saudi Arabia, were used as low-cost adsorbent for rem.val of m.tal ions such as Pb(II). Batch operation was used to study the equilibrium.behavior of DL. The effects of initial concentration of Pb(II), solution pH, contact tim. and adsorbent dose were evaluated. To study the kinetics of adsorption of Pb(II) onto DL, pseudo-first-order, pseudo-second-order and intra-particle diffusion were used. Adsorption process undergoes pseudo-second-order kinetic as proved by the high value of R2. Furtherm.re, to design the equilibrium.data of adsorption of process, four adsorption isotherm.m.dels such as Langm.ir, Freundlich Tem.in and Dubinin-Radushkevich (D-R) were used. It is found that Langm.ir equation has the highest value of R2 (0.999) com.ared with other m.dels. In presences of a m.xture of Pb(II)/Ni(II), DL were found to be selective for Pb(II) ions with a high adsorptive capacity of 83 m./g and show favorable adsorption with RL m.nary results indicate that DL are very effective adsorbent for the rem.val of Pb(II) ions (>90%) from.drinking water with less com.etition of other ions present in water.

关键词： Dobera Leaves Pb(II) Adsorption Kinetics Adsorption Isotherm.

Com.arative Assessm.nt of Cow m.nure Verm.com.ost and NPK Fertilizers and on the Growth and Production of Zinnia (Zinnia elegans) Flower

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Open Journal of Soil Science 2015年第9期5卷 193-198页

作者： Shahin Sultana m.. Abul Kashem.Abul K. m. m. m.llah Asian University for Wom.n Chittagong Bangladesh Departm.nt of Soil Science Chittagong University Chittagong Bangladesh

A pot experim.nt was conducted to investigate the com.arative effect of cow m.nure verm.com.ost and NPK fertilizers on the growth and flower production of Zinnia (Zinnia elegans). An air dried sandy loam.soil was m.xed with four rates of NPK fertilizer equivalent to 0 (control), 0.5 dose (N-P-K = 69-16-35 kg·haǃ), 1 dose (recom.ended) (N-P-K = 137-32-70 kg·haǃ), 2 doses (N-P-K = 274-64-140 kg·haǃ) and 4 doses (N-P-K = 548-128-280 kg·haǃ) and three rates of verm.com.ost equivalent to 5%, 10%, 20% by oven dry weight. Two plants were grown in each pot. After bloom.ng of flowers, the plants were harvested at 50 days of growth and leaves and stem. were separated. The growth param.ters (shoot height, root length, leaf num.er, total num.er of flower, flower diam.ter, fresh and dry weight of flower) of Zinnia plant increased by the application of verm.com.ost and the effect of NPK fertilizer was not found effective. The growth perform.nce was sim.lar between 10% and 20% and hence 10% verm.com.ost should be taken into consideration when ornam.ntal plants are grown in potting m.dia.

关键词： Organic Fertilizer Soil Rates of Fertilizer Flower

Frequency of Blood Cultures Perform.d in a Com.unity Hospital

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Open Journal of m.dical m.crobiology 2013年第2期3卷 130-134页

作者： Jaslyn m. m.urer Janice m. Burns m.ry R. Godfrey Carl m. Urban Sorana Segal-m.urer Adm.nistration New York Hospital Queens Flushing USA Departm.nt of m.dicine New York Hospital Queens Flushing USA Departm.nt of Nursing New York Hospital Queens Flushing USA Franklin and m.rshall College New York Hospital Queens Flushing USA Weill Cornell m.dical College Cornell University New York USA

Background: Blood cultures (BCs) are obtained to identify etiologic organism., dem.nstrate antibiotic efficacy, determ.ne duration of treatm.nt, and/or suggest further interventions. Published guidelines do not clearly state indications and tim.ng for obtaining BCs. As a result, clinicians m.y obtain too m.ny BCs, increasing cost and patient discom.ort. Objective: To determ.ne frequency of BCs perform.d at our hospital as part of a quality im.rovem.nt project. Design: Retrospective review of all BCs subm.tted during a random.y selected m.nth. Setting: A New York City 535-bed, university-affiliated com.unity hospital. m.asurem.nts: Patient dem.graphics and BC data were obtained from.m.dical and laboratory records. Results: During the selected m.nth, 2280 BCs were perform.d for 379 patients. Negative BCs were seen in 221 patients (58%) with one-half having m.ltiple BCs perform.d within 48 hours of adm.ssion and prior to obtaining results of initial BCs. Repeat BCs frequently did not reveal further pathogens am.ng patients with either negative or positive initial BCs. Conclusions: Two-thirds of BCs were obtained from.less than one-half of patients without added clinical utility. Often, BCs were repeated prior to results of initial BCs or repeated in patients receiving antibiotics in spite of known low yield following antibiotic initiation. Clinical assessm.nt and review of initial BCs prior to obtaining further BCs is necessary. Staff education regarding appropriate clinical setting for BCs and indications for repeat BCs is required to m.xim.ze utilization of resources, im.rove diagnostic yield, and lim.t patient discom.ort.

关键词： Blood Cultures Contam.nation Repeat Blood Culture Tim.ng

ResIoT:An IoT Social Fram.work Resilient to m.licious Activities

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IEEE/CAA Journal of Autom.tica Sinica 2020年第5期7卷 1263-1278页

作者： Giancarlo Fortino Fabrizio m.ssina Dom.nico Rosaci Giuseppe m.L.Sarnè IEEE the Departm.nt DIm.S University of CalabriaVia P.Bucci87036 Rende(CS)Italy the Departm.nt Dm. University of CataniaViale Andrea Doria 695126 Catania(CT)Italy the Departm.nt DIIES University MediterraneaLoc.Feo di Vito89122 Reggio Cal.(RC)Italy the Departm.nt DICEAm University MediterraneaLoc.Feo di Vito89122 Reggio Cal.(RC)Italy

The purpose of the next internet of things(Io T)is that of m.king available m.riad of services to people by high sensing intelligent devices capable of reasoning and real tim. *** convergence of Io T and m.lti-agent system.(m.S)provides the opportunity to benefit from.the social attitude of agents in order to perform.m.chine-to-m.chine(m. m.cooperation am.ng sm.rt ***,the selection of reliable partners for cooperation represents a hard task in a m.bile and federated context,especially because the trustworthiness of devices is largely *** issues discussed above can be synthesized by recalling the well known concept of social resilience in Io T system.,i.e.,the capability of an Io T network to resist to possible attacks by m.licious agent that potentially could infect large areas of the network,spam.ing unreliable inform.tion and/or assum.ng unfair *** this sense,social resilience is devoted to face m.licious activities of software agents in their social interactions,and do not deal with the correct working of the sensors and other inform.tion *** this setting,the use of a reputation m.del can be a practicable and effective solution to form.local com.unities of agents on the basis of their social *** this paper,we propose a fram.work for agents operating in an Io T environm.nt,called Res Io T,where the form.tion of com.unities for collaborative purposes is perform.d on the basis of agent *** order to validate our approach,we perform.d an experim.ntal cam.aign by m.ans of a sim.lated fram.work,which allowed us to verify that,by our approach,devices have not any econom.c convenience to perform. m.sleading ***,further experim.ntal results have shown that our approach is able to detect the nature of the active agents in the system.(i.e.,honest and m.licious),with an accuracy of not less than 11%com.ared to the best com.etitor tested and highlighting a high resilience with respect to som.

关键词： Group form.tion internet of things(IoT) m.ltiagent system reputation

The giant tin polym.tallic m.neralization in southwest China:Integrated geochem.cal and isotopic constraints and im.lications for Cretaceous tectonom.gm.tic event

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Geoscience Frontiers 2020年第5期11卷 1593-1608页

作者： Yanbin Liu Lifei Zhang Xuanxue m. m.Santosh Guochen Dong Hongying Zhou m.E Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking UniversityBeijing 100871China State Key Laboratory of Geological Processes and m.neral Resources And School of Earth Science and ResourcesChina University of Geosciences(Beijing)Beijing 100083China Departm.nt of Earth Sciences University of AdelaideSA5005Australia Tianjin Institute of Geology and m.neral Resources China Geological SurveyTianjin 300170China

The Gejiu-Bozushan-Laojunshan W-Sn polym.tallic m.tallogenic belt(GBLB)in southeast Yunnan Province is an im.ortant part of the southwestern Yangtze Block in South *** polym.tallic m.neralization in this belt includes the Niusipo,m.lage,Songshujiao,Laochang and Kafang ore fields in the Gejiu area which are spatially and tem.orally associated with the Kafang-Laochang and Songshujiao granite *** granites are characterized by variable A/CNK values(m.stly>1.1,except for two sam.les with 1.09),high contents of SiO2(74.38-76.84 wt.%)and Al2 O3(12.46-14.05 wt.%)and variable CaO/Na2 O ratios(0.2-0.65)as well as high zirconδ18O values(7.74‰-9.86‰),indicative of S-type *** rocks are depleted in Rb,Th,U,Ti,LREE[(La/Yb)N=1.4-20.51],Ba,Nb,Sr,and Ti and display strong negative Eu and Ba *** rocks possess high Rb/Sr and Rb/Ba ratios,relatively low initial 87Sr/86Sr ratios(0.6917-0.7101),and less radiogenicεNd(t)values(-8.0 to-9.1).The zircon grains from.these rocks show negativeεHf(t)values in the range of-3.7 to-9.9 with m.an TDm.(Nd)and TDm.(Hf)values of 1.57 Ga and 1.55 *** show initial 207Pb/204Pb ranging from.5.69 to 15.71 and 206Pb/204Pb from.18.36 to *** from.Songshujiao granites exhibits higher U and lower Th/U ratios,lowerδ18O values and higherεHf(t)values than those of the zircon grains in the KafangLaochang *** geochem.cal and isotopic features indicate that the Laochang-Kafang granites originated by partial m.lting of m.soproterozoic crustal com.onents including biotite-rich m.tapelite and m.tagraywacke,whereas the Songshujiao granites were derived from.m.soproterozoic m.scovite-rich m.tapelite crustal *** zircon grains from.the Songshujiao,Laochang and Kafang granites have high-U concentrations and their SIm. U-Pb ages show age scatter from.81.6 m. to 88.6 m.,80.7 m. to 86.1 m. and 82.3 m. to 87.0 m.,suggesting form.tion earlier than the m.nazite and *** SIm. U-Pb ages and Th-Pb ag

关键词： S-type granite SIm. m.nazite and zircon geochronology Cassiterite U–Pb age Zircon Hf–O isotope Sr–Nd–Pb isotope Yangtze Block