检索结果-南通市图书馆

Interaction between seed size and NaCl on germination and early seedling growth of some Turkish cultivars of chickpea(Cicer arietinum L.)

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第5期9卷 371-377页

作者： Muharrem KAYA Gamze KAYA mehmet Demir KAYA mehmet atak Sevil SAGLAM Khalid Mahmood KHAWAR Cemalettin Yasar CIFTCI Department of Field Crops Faculty of AgricultureSuleyman Demirel University Central Research Institute for Field Crops Ministry of Agriculture and Rural Affairs Department of Field Crops Faculty of AgricultureMustafa Kemal University Department of Field Crops Faculty of AgricultureUniversity of Ankara

Chickpea is an important food legume crop of Turkey and is largely grown for human consumption on low moisture or salt-affected soils. The objective of the study was to find the effects of NaCl stress at electrical conductivities of 4.5, 8.6, 12.7 and 16.3 dS/m and seed sizes （7, 8 and 9 mm） on germination and early seedling growth of three popular chickpea cultivars （AKN-97, Gokce and Uzunlu-99）. Mean frequency of germination, germination time, germination index, root length, shoot length and seedling fresh weight showed seed size-dependent responses ofcultivars to salt stress. In general, small seeds germinated and grew more rapidly compared to medium and large seeds of the same cultivars against all levels of salt stress, with the best results in cultivar Uzunlu-99. No effect of NaCl treatments was observed on frequency of germination; however, a drastic decrease in early seedling growth was recorded at increased NaC1 concentrations. Regression analysis results showed a significantly positive relationship （P〈0.01） between seed size and mean germination time, whereas a significantly negative relationship was recorded between seed size and germination index, root length, shoot length. Moreover, linear regression values apparently confirmed that increased seed size in each cultivar affected decreased germination index, root and shoot lengths with enhanced mean germination time. Thus, it was concluded that the use of small seeds could considerably reduce the production costs of chickpea in salt-affected soils.

关键词： Chickpea (Cicer arietinum L.) NaCl stress Cultivar Seed size Germination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

土耳其文版低视力生活质量量表的效度和信度研究(英文)

引用

国际眼科杂志 2011年第11期11卷 1880-1885页

作者： Aysun Idil mehmet Ozen Nazli atak Atilla Elhan Selcen Pehlivan 安卡拉大学医学院公共卫生系低视力康复中心安卡拉大学医学院医学教育系安卡拉大学医学院生物统计系

目的:把低视力相关的生活质量(LVQOL)文书改编为土耳其文,并评估其效度和信度。方法:这项研究是在387位参加安卡拉大学医学院,低视力康复中心的患者中进行的。使用Spearman相关系数,Cronbachα系数和验证性因素分析(CFA)进行统计分析。... 详细信息

目的:把低视力相关的生活质量(LVQOL)文书改编为土耳其文,并评估其效度和信度。方法:这项研究是在387位参加安卡拉大学医学院,低视力康复中心的患者中进行的。使用Spearman相关系数,Cronbachα系数和验证性因素分析(CFA)进行统计分析。结果:根据CFA结果,在"调节能力"维的条目,因为有低于0.40的因子负荷故被排除在调查问卷之外。根据Cronbachα系数,对量表的信度进行了评估。"远视力,移动和光感"维的信度是α=0.863;"调节能力"维是α=0.694;"读和精细工作"α=0.791,"日常生活能力"α=0.770。因此,这些结果表明,用量表来衡量低视力患者的视力相关的生活质量是可靠的。对维之间的相关性也进行了分析,"调节能力"和"读和精细工作"之间的相关性被认为是最低的(rs=0.336,P<0.01),而"读和精细工作"与"日常生活能力"之间的相关性被发现是最强的。此外,"调节能力"仅与"远视力,移动和光感"表现最强的相关性。结论:删除第二个维中最后一个条目后,对LVQOL所有维的土耳其文改编已被证明是可靠的,有效的,适合在土耳其的低视力患者中使用。

关键词：低视力相关的生活质量土耳其文版低视力康复

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Validity and reliability study of Turkish version on low vision with quality of life questionnaire

引用

International Journal of Ophthalmology(English edition) 2011年第5期4卷 546-551页

作者： Aysun Idil mehmet Ozen Nazli atak Atilla Elhan Selcen Pehlivan Department of Public Health Centre of Low Vision RehabilitationFaculty of MedicineAnkara University Department of Medical Education Faculty of MedicineAnkara University Department of Biostatistics Faculty of MedicineAnkara University

AIM:To adapt the low vision-related quality of life(LVQOL) instrument into Turkish language and to assess its validity and ***:The study was conducted in 387 patients attending the Centre of Low Vision Rehabilitation,Faculty of Medicine,Ankara *** statistical analyses,the Spearman's correlation coefficient,Cronbach's alpha coefficient and Confirmatory Factor Analysis(CFA) were ***:According to results of CFA,the item in the 'Adjustment' subscale because of having the factor loading below 0.40,was excluded from the *** reliability of the questionnaire was assessed according to Cronbach's alpha *** reliability of the 'Distance Vision,Mobility,and Lighting' subscale was ?琢=0.863;of the 'Adjustment' subscale was ?琢=0.694;'Reading and Fine Work' was ?琢=0.791,and 'Activities of Daily Living' was ?琢= *** these results indicate that the questionnaire is reliable to measure the vision related quality of life of low-vision *** correlations between the subscales were also analyzed,and the correlation between 'Adjustment' and 'Reading and Fine Work' was found to be the lowest(rs=0.336,P <0.001),whereas the strongest correlation was found between the 'Reading and Fine Work',and 'Activities of Daily Living'.Additionally,the 'Adjustment' dimension showed the strongest correlation with only 'Distance Vision,Mobility,and Lighting' ***:After removing the last item in the second dimension,the Turkish adaptation of all dimensions of the LVQOL has been shown to be reliable,valid and suitable for use in patients with low vision in Turkey.

关键词： low vision-related quality of life Turkish version low vision rehabilitation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

以天然沥青岩为原料制备高压缩强度的泡沫炭(英文)

引用

新型炭材料 2013年第2期28卷 127-133页

作者： Deniz Baran mehmet Ferhat Yardim Hüsnü atakül Ekrem Ekinci AKSA Denizcah Koyu Yalova Turkey lstanbu Technical University Maslak 34469 Istanbul Turkey Tdinamik Energy Industry & Foreign Trade Co. Bulgurlu Uskudar 34696 lstanbul Turkey

以安纳托利亚东南部的天然沥青岩为原料制备泡沫炭。所制泡沫炭的平均孔径和密度分别为150μm和800 kg/m3。主要研究了压力、温度、泄压时间及在最高温度时的停留时间对泡沫形成的影响,同时还评价了炭化过程对泡沫结构的影响。主要研究... 详细信息

以安纳托利亚东南部的天然沥青岩为原料制备泡沫炭。所制泡沫炭的平均孔径和密度分别为150μm和800 kg/m3。主要研究了压力、温度、泄压时间及在最高温度时的停留时间对泡沫形成的影响,同时还评价了炭化过程对泡沫结构的影响。主要研究了压力、温度、泄压时间及在最高温度时的停留时间对泡沫炭进行了表征,并进行了密度及抗压强度分析。结果表明,1 323 K炭化后,泡沫炭压缩强度由10 MPa增加到18.7 MPa。沥青的灰分含量(41.76%)对泡沫炭的密度和压缩强度起重要作用。

关键词：泡沫炭沥青岩压缩强度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fuzzy rule based seismic risk assessment of one-story precast industrial buildings

引用

Earthquake Engineering and Engineering Vibration 2019年第3期18卷 631-648页

作者： mehmet Palanci Istanbul Arel University Department of Civil Engineering

Effi cient tools capable of using uncertain data to produce fast and approximate results are more practical in rapid decision-making applications when compared to conventional methods. From this point of view, this study introduces a risk assessment model for one-story precast industrial buildings by fuzzy logic which builds a bridge between uncertainty and precision. The input, output and relations of the fuzzy based risk assessment model (FBRAM) were determined by reference buildings. The Monte Carlo simulation method was used to handle uncertainties associated with the structural characteristics of the reference buildings. Section dimension, longitudinal reinforcement ratio, column height related to building elevation, confi nement ratio and seismic hazard are regarded as input and the plastic demand ratio is considered as the output parameter by the mathematical formulation of strength and deformation capacity of the buildings. The supervised learning method was used to determine the membership function of fuzzy sets. Fuzzy rules of FBRAM were constructed from Monte Carlo simulation by mapping of inputs and output. FBRAM was evaluated by a group of simulated buildings and two existing precast industrial buildings. Comparisons have shown signifi cant agreement with analytical model results in both cases. Consequently, it is anticipated that the proposed model can be used for the seismic risk mitigation of precast buildings.

关键词： fuzzy logic supervised learning precast buildings risk assessment Monte Carlo simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Two-and three-dimensional stability analysis of underground storage caverns in soft rock(Cappadocia, Turkey) by finite element method

引用

Journal of Mountain Science 2022年第4期19卷 1182-1202页

作者： SARI mehmet Department of Mining Engineering Aksaray UniversityAksaray 68100Turkey

Engineering design in soft rocks and its stability analysis exerts many challenges to rock engineers. Many engineering works in Turkey’s Cappadocia region must face and tackle the existing sites covered by the soft rocks. This study is aimed to examine the stability condition of a typical underground storage cavern(USC) excavated in a soft rock in this region. For this purpose, two-and threedimensional stability analyses of the USCs were performed using the finite element method(FEM).Because of the inherent difficulty in characterizing soft/weak rock masses in the region using traditional classification systems, the stability of a typical USC was evaluated by representing the rock mass condition with two distinct scenarios in FEM *** these structures were unstable according to the 2D analysis conducted in RS2 software in the worstcase scenario, they were stable in the 3D analysis using RS3 software in both scenarios. Besides,feasible cover depths were examined to assess their possible effects on the factor of safety and deformation measurements. It was found that 15 m seems to be an optimal depth for excavating a typical USC in the soft rocks exposed in the region. The 3D FEM results provide valuable information to optimize the future planning and preliminary design of USCs.

关键词： Underground storage cavern Numerical modeling Soft rock FEM analysis Rock mass failure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluating rockfalls at a historical settlement in the Ihlara Valley(Cappadocia, Turkey) using kinematic, numerical, 2D trajectory, and risk rating methods

引用

Journal of Mountain Science 2022年第12期19卷 3346-3369页

作者： SARI mehmet Department of Mining Engineering Aksaray UniversityAksaray68100Turkey

Rockfalls are one of the most dangerous natural events in hilly terrains, and they substantially threaten residential areas and transport corridors in these environments. This study is aimed to analyze the risk of rockfall from a slope to nearby houses in a historical settlement with past rockfall histories. It contains numerous applications to study rockfall danger from different points of view(e.g., kinematics,numerical stability analysis, risk assessment, 2D trajectory). The rockfall kinematics revealed the statistics for different structurally controlled failure modes among the surveyed slope discontinuities,especially wedge type and block toppling were the most significant ones. Finite element analysis showed that the slope was stable under the natural condition with a safety factor of 2.19. The rockfall risk rating system calculated a medium risk for the houses downstream. Based on the field measurements, a possible rockfall profile was determined and located as an input in the 2D rockfall trajectory program. The rigid-body impact model runs utilized various shapes and sizes of blocks to simulate the rockfall events realistically. According to the 2D trajectory model results, there was no rockfall danger for the investigated downslope houses. The study showed the importance of using different analysis techniques to solve rockfall risk in protected areas based on scientific and rational approaches.

关键词： Belisirma village Cappadocia region Rockfall kinematics 2D rockfall trajectory analysis Rockfall risk rating system FEM modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Analytical and approximate solutions of(2+1)-dimensional time-fractional Burgers-Kadomtsev-Petviashvili equation

引用

Communications in Theoretical Physics 2020年第5期72卷 21-31页

作者： mehmet Senol Department of Mathematics Nevsehir Haci Bektas Veli UniversityNevsehirTurkey

In this paper,we applied the sub-equation method to obtain a new exact solution set for the extended version of the time-fractional Kadomtsev-Petviashvili equation,namely Burgers-Kadomtsev-Petviashvili equation(Burgers-K-P)that arises in shallow water ***,using the residual power series method(RPSM),approximate solutions of the equation were obtained with the help of the Mathematica symbolic computation *** also presented a few graphical illustrations for some *** fractional derivatives were considered in the conformable *** of the obtained solutions were replaced back in the governing equation to check and ensure the reliability of the *** numerical outcomes confirmed that both methods are simple,robust and effective to achieve exact and approximate solutions of nonlinear fractional differential equations.

关键词： fractional partial differential equations Burgers-Kadomtsev-Petviashvili equation conformable fractional derivative sub-equation method residual power series method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Optimization of selective copper extraction from chalcopyrite concentrate in presence of ammonium persulfate and ammonium hydroxide

引用

International Journal of Minerals,Metallurgy and Materials 2019年第8期26卷 946-952页

作者： mehmet Deniz Turan Department of Metallurgical and Materials Engineering Firat University

The dissolution of copper and iron from chalcopyrite concentrate in the presence of ammonium persulfate(APS)and ammonium hydroxide was investigated under atmospheric leaching *** were designed by central composite design(CCD).Under the optimum leaching conditions((NH4)2S2O8 concentration=328 g/L;NH4OH addition=16vol%;leaching temperature=321 K(48℃);leaching time=120 min;liquid-to-solid ratio=16;stirring speed=400 r/min),selective leaching was achieved.98.14%of the copper was leached,whereas iron did not pass into the solution.X-ray diffraction analysis of the leaching residue showed that iron compounds were *** the leaching results,the fact that the leaching process does not include uneconomical leaching stages such as extended milling/mechanical activation or high pressures/temperatures,and the low copper dissolution conditions,the attained selective leaching yield may be remarkable.

关键词： leaching complex reaction selectivity copper chalcopyrite

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reductive atmospheric acid leaching of spent alkaline batteries in H_2SO_4/Na_2SO_3 solutions

引用

International Journal of Minerals,Metallurgy and Materials 2015年第7期22卷 674-681页

作者： mehmet Hakan Morcali Faculty of Chemical and Metallurgical Engineering Istanbul Technical University

This work studies the optimum reductive leaching process for manganese and zinc recovery from spent alkaline battery paste. The effects of reducing agents, acid concentration, pulp density, reaction temperature, and leaching time on the dissolution of manganese and zinc were investigated in detail. Manganese dissolution by reductive acidic media is an intermediate-controlled process with an activation energy of 12.28 kJ＇mo1-1. After being leached, manganese and zinc were selectively precipitated with sodium hydroxide. The zinc was entirely con- verted into zincate （Zn（OH）42-） ions and thus did not co-precipitate with manganese hydroxide during this treatment （2.0 M NaOH, 90 min, 200 r/rain, pH 〉 13）. After the manganese was removed from the solution, the Zn（OH）4^2- was precipitated as zinc sulfate in the presence of sulfuric acid. The results indicated that this process could be effective in recovering manganese and zinc from alkaline batteries.

关键词： waste recycling alkaline batteries manganese zinc recovery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：