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Halophytes are plants able to tolerate high salt concentrations but no clear definition was retained for them. In literature, there are more studies that showed salt-enhanced tolerance to other abiotic stresses compared to investi...
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Halophytes are plants able to tolerate high salt concentrations but no clear definition was retained for them. In literature, there are more studies that showed salt-enhanced tolerance to other abiotic stresses compared to investigations that found enhanced salt tolerance by other abiotic stresses in halophytes. The phenomenon by which a plant resistance to a stress induces resistance to another is referred to as cross-tolerance. In this work, we reviewed cross-tolerance in halophytes at the physiological, biochemical, and molecular levels. A special attention was accorded to the cross-tolerance between salinity and organic pollutants that could allow halophytes a higher potential of xenobiotic phytoremediation in comparison with glycophytes.
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Methods of increasing the accuracy of liquid level measurements are considered. The level-measuring installation UUE1r-N-20 based on the XL-80 laser interferometric measuring system with a direct liquidlevel measurement capability...
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Methods of increasing the accuracy of liquid level measurements are considered. The level-measuring installation UUE1r-N-20 based on the XL-80 laser interferometric measuring system with a direct liquidlevel measurement capability in the range of 0–20 m is presented. The principle of operation of the measuring system of the level-measuring installation is based on measuring the linear movements of the float in the liquid relative to the absolute fixed zero of the level-measuring installation. A mathematical model is provided for determining the liquid level using a level-measuring installation, taking into account the effect of environmental parameters on the elements of the measuring system. The metrological characteristics of the level-measuring installation are calculated, including the uncertainty of the liquid level measurements. The confidence limits of the total error of measuring a unit of the liquid level with a confidence probability of 0.95 are ±0.11 mm when transferring a liquid level unit to the standards or liquid level measuring instruments with an absolute fixed zero, and ±0.044 mm when transferring a liquid level unit to the standards or liquid level measuring instruments without an absolute fixed zero.
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The recognition of the non-accelerating, periodic pattern of sea levels as described by the tide gauges measurements does not require any special mathematical tool. Providing enough data of sufficient quality have been recorded, I...
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The recognition of the non-accelerating, periodic pattern of sea levels as described by the tide gauges measurements does not require any special mathematical tool. Providing enough data of sufficient quality have been recorded, If the classical linear fitting is used to compute the rate of rise at any time, then the acceleration is simply the time rate of change of this velocity. By using this technique, the lack of any acceleration over the last few decades is evident in the naturally oscillating, slow rising, tide gauges of appropriate quality and length. Contrary to what is claimed in the commented paper, the accuracy in the computation of the periodicities of the natural oscillations does not impact at all on this result. As the measured sea level oscillations are not perfectly sinusoidal, clearly different assumptions about the shape of the periodic functions, their number and the definition of the algorithm used to compute the parameters of the selected periodic functions all affect the determination of the periodicities. This has however very little influence on the present sea level debate questioning the presence or the absence of acceleration at the tide gauges.
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Levelling techniques is classified as geometric levelling, trigonometric levelling and GPS/Levelling depending on used instruments or the methods applied. Accuracies of geometric levelling with using three equipments (Leica NA-720...
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Levelling techniques is classified as geometric levelling, trigonometric levelling and GPS/Levelling depending on used instruments or the methods applied. Accuracies of geometric levelling with using three equipments (Leica NA-720 optical level, Topcon RL-VH4G2 laser level and Leica NA-3003 digital level), the trigonometric levelling with using two equipments (Topcon GTS710 total station and Topcon Imaging Station) and GPS/levelling with using Sokkia GSR2600 receiver were investigated to determine their performances against precise levelling that yields the most precise results. For this purpose, measurements were taken at hundred points on the ground of a well-protected site. The comparison of the results was performed based on accuracy, time cost and terrain independence. The comparison shows that levelling using digital level produces the closets results to precise levelling results, the time cost of GPS/levelling was 74% and 41% less than geometric and trigonometric levelling respectively, and trigonometric and GPS/levelling are independent of the terrain surveyed.
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The history of "Nuclear Level Mixing" is closely related to the research that Prof. Coussement performed during the last 25 years. In particular, the impact of this quantum mechanical concept on different research fields will be d...
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The history of "Nuclear Level Mixing" is closely related to the research that Prof. Coussement performed during the last 25 years. In particular, the impact of this quantum mechanical concept on different research fields will be discussed. Without going in detail, we aim to give the reader an idea of how one single concept may lead to different discoveries.
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In this paper we consider the problems of testing a multi-level graph for planarity and laying out or, drawing, a multi-level graph in a clear way. We introduce a new abstraction of a common integer linear programming formulation ...
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In this paper we consider the problems of testing a multi-level graph for planarity and laying out or, drawing, a multi-level graph in a clear way. We introduce a new abstraction of a common integer linear programming formulation of the problems that we call a vertex-exchange graph. We demonstrate how this concept can be used to solve the problems by providing clear and simple algorithms for testing a multi-level graph for planarity and laying out a multi-level graph when planar.
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Puddling is rice bed preparation technique followed since dawn of rice production. It plays very important role in the cultivation of rice in minimizing the water requirement by reducing the water losses through percolation. Puddl...
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Puddling is rice bed preparation technique followed since dawn of rice production. It plays very important role in the cultivation of rice in minimizing the water requirement by reducing the water losses through percolation. Puddled bed provides softseed bed for rice seedlings. But the rice bed formed through conventional puddling practices is not precision leveled. Research revealed that there is continuous slope observed from one end to the other end of the field, which needs abundant amount of water to have a leveled ponded water surface. The study was conducted to know the effect of puddling on surface levels of the conventionally puddled wet rice fields. Totally six fields were studied for their variation in elevations before and after puddling. ANOVA two way and one way tests were conducted to know the significant effect. It was found that puddling significantly affected the level variations in the field and surface levels of the fields were not differed by type of puddling practices.
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Objective: To determine the frequency of dyslipidemia in normotensive, non diabetic obese patients. Methods: It was a cross sectional study including admitted patients and patients visiting outdoor. After obtaining informed consen...
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Objective: To determine the frequency of dyslipidemia in normotensive, non diabetic obese patients. Methods: It was a cross sectional study including admitted patients and patients visiting outdoor. After obtaining informed consent, demographic information such as name, age, gender was collected .This study included 200 normotensive, non diabetic obese patients. Serum lipid profile was checked in all patients. The frequency and pattern of dyslipidemia was assessed which was described in frequency distribution tables. Results: The mean total Cholesterol, mean LDL C, HDL and Triglyceride levels were 211.59 ± 42.39 mg/dL, 131.39 ±17.21mg/dL, 36.46±7.93 mg/dL and 164.69 ± 11.80 mg/dL, respectively. The dyslipidemias were found in 87 (43.5%) patients. Conclusion: The frequency of dyslipidemias is high among normotensive non diabetic obese patients. So, every patient with obesity should be screened with lipid profile. .
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In this paper, we introduce the notion of level function for a continuous real-valued quasiconvex function. The existence, construction, and application of level functions are discussed. Further, we propose a numerical method base...
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In this paper, we introduce the notion of level function for a continuous real-valued quasiconvex function. The existence, construction, and application of level functions are discussed. Further, we propose a numerical method based on level functions for the solution of quasiconvex minimization problems. Several versions of the algorithms are presented. Also, we apply the idea of the level function method to the solution of a class of variational inequality problems. Finally, the results of numerical experiments on the proposed algorithms are reported.
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To efficiently express a gene of interest in transgenic plants, the choice of promoter is a crucial factor as it directly affects the expression of the transgene that will yield the desired phenotype. The Arabidopsis beta-carotene...
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To efficiently express a gene of interest in transgenic plants, the choice of promoter is a crucial factor as it directly affects the expression of the transgene that will yield the desired phenotype. The Arabidopsis beta-carotene hydroxylase 1 gene (AtBch1) shows constitutive and ubiquitous expression and was thus selected as one of best candidates for constitutive promoter analysis by both in silico northern blotting and semi-quantitative RT-PCR analysis. To investigate AtBch1 promoter activity, the 1,981-bp 5'-upstream region of this gene was fused with beta-glucuronidase (GUS) and transformed into Arabidopsis. Through the molecular characterization of transgenic leaf tissues, the AtBch1 promoter generated strong activity that drives 1.8- and 2-fold higher GUS expression than the cauliflower mosaic virus 35S (35S) promoter at the transcriptional and translational levels, respectively. Furthermore, the GUS enzyme activity driven by the AtBch1 promoter was 2.8-fold higher than that produced by the 35S promoter. By histochemical GUS staining, the ubiquitous expression of the AtBch1 promoter was observed in all tissues of Arabidopsis. Semi-quantitative RT-PCR analysis with different tissues further showed that this promoter serves as a strong constitutive driver of transgene expression in dicot plants.
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