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An improved technique for global daily sunshine duration estimation using satellite imagery

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第9期13卷 717-722页

作者： Muhammad ali SHAMIM Renji REMESAN Da-wei HAN Naeem EJAZ Ayub ELAHI Department of Civil Engineering University of Engineering and Technology Taxila 47050 Pakistan Department of Geography University of Hull HU6 7RX UK Department of Civil Engineering University of Bristol BS8 ITR UK

This paper presems an improved model for global sunshine duration estimation. The methodology incorporates geostationary satellite images by including snow cover information, sun and satellite angles and a trend correction factor for seasons, for the determination of cloud cover index. The effectiveness of the proposed methodology has been tested using Meteosat geostationary satellite images in the visible band with a temporal resolution of 1 h and spatial resolution of 2.5 km×2.5 km, for the Brue Catchment in the southwest of England. Validation results show a significant improvement in the estimation of global sunshine duration by the proposed method as compared to its predecessor （R2 is improved from 0.68 to 0.83, root mean squared error （RMSE） from 2.37 h/d to 1.19 h/d and the mean biased error （MBE） from 0.21 h/d to 0.08 h/d）. Further studies are needed to test this method in other parts of the world with different climate and geographical conditions.

关键词： Sunshine duration Geostationary satellite Evapotranspiration Solar radiation Remote sensing

Naringin attenuates oxidative stress,inflammation,apoptosis,and oxidative DNA damage in acrylamide-induced nephrotoxicity in rats

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Asian Pacific Journal of Tropical Biomedicine 2022年第5期12卷 223-232页

作者： Volkan Gelen Serkan Yıldırım EminŞengül aliÇınar FikretÇelebi Merve Küçükkalem Melahat Gök Department of Physiology Faculty of Veterinary MedicineKafkas UniversityKarsTurkey Department of Pathology Faculty of Veterinary MedicineAtatürk UniversityErzurumTurkey Department of Physiology Faculty of Veterinary MedicineAtatürk UniversityErzurumTurkey

Objective:To explore the possible effects of naringin on acrylamide-induced nephrotoxicity in ***:Sprague-Dawley rats weighing 200-250 g were randomly divided into five *** control group was given intragastric(i.g.)saline(1 mL)for 10 *** acrylamide group was given *** in saline(38.27 mg/kg titrated to 1 mL)for 10 *** treatment groups were administered with naringin in saline(50 and 100 mg/kg,respectively)for 10 d and given ***(38.27 mg/kg)1 h after naringin *** naringin group was given ***(100 mg/kg)alone for 10 *** day 11,intracardiac blood samples were obtained from the rats when they were under anesthesia,after which they were *** and creatinine concentrations of blood serum samples were analyzed with an ***-linked immunosorbent assay was used to quantify malondialdehyde,superoxide dismutase,glutathione,glutathione peroxidase,catalase,tumor necrosis factor-α,nuclear factor-κB,interleukin(IL)-33,IL-6,IL-1β,cyclooxygenase-2,kidney injury molecule-1,mitogen-activated protein kinase-1,and caspase-3 in kidney *** tissues were also evaluated by histopathological and immunohistochemical examinations for 8-OHdG and ***:Naringin attenuated acrylamide-induced nephrotoxicity by significantly decreasing serum urea and creatinine *** increased superoxide dismutase,glutathione,glutathione peroxidase,and catalase activities and decreased malondialdehyde levels in kidney *** addition,naringin reduced the levels of inflammatory and apoptotic parameters in kidney *** histopathological assay showed that acrylamide caused histopathological changes and DNA damage,which were ameliorated by ***:Naringin attenuated inflammation,apoptosis,oxidative stress,and oxidative DNA damage in acrylamide-induced nephrotoxicity in rats.

关键词： Acrylamide Nephrotoxicity Apoptosis Inflammation Naringin Oxidative stress Oxidative DNA damage

Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert,China

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Sand flux estimation during a sand-dust storm at Tazhong are...

Bioadsorption of Pb(II) onto Anethumgraveolensfrom Contaminated Wastewater: Equilibrium and Kinetic Studies

第28届中国气象学会年会

作者： ali Mamtimin Institute of Desert Meteorology China Meteorological Administration Desert Atmosphere and Environment Observation Experiment of Taklimakan Station

In this paper,the sand transport during a sand-dust storm in the Tazhong area of the central Taklimakan Desert from 11:29 to 23:56 on July 19,2008 was observed and measured in real *** sand flux at Tazhong was estimated using sand transport empirical *** critical friction velocity at Tazhong was 0.24 m/s and the functional relation between the wind speed and sediment discharge at the height of 2 m was *** was also found that the calculated values by Lettau’s sediment discharge formula were close to those of the instrument *** horizontal sand flux and the vertical sand flux during this sand-dust storm at Tazhong were respectively 258.67×10-4 kg/（m·s） and 40.07×10-7 kg/（m2·s）.

关键词： friction velocity sand transport flux Taklimakan Desert

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Journal of Environmental Protection 2013年第1期4卷 108-119页

作者： ali Hashem Khalid El-Khiraigy Faculty of Science and Arts at Shaqra Shaqra University Shaqra Saudia Arabia Shaqra University Shaqra Saudia Arabia

In the present study we reported the feasibility of the Anethum graveolens as biosorbent to remove Pb(II) from aqueous solutions. Anethum graveolens was characterized by scanning electron microscopy and elemental analysis. The ability of Anethum graveolens to adsorb Pb(II) was investigated by using batch adsorption procedure. The effects such as pH, contact time, adsorbate concentration and biosorbent dosage on the adsorption capacity were studied. The experimental data were analysed using various adsorption kinetic models viz., the pseudo-first and second-order equations, Bangham’s equation, intraparticle diffusion and Elovich models. Results show that the pseudo-second-order equation provides the best correlation for the biosorption process. The equilibrium nature of Pb(II) adsorption at 30℃ has been described by the Langmuir, Freundlich, Temkin and Redlich-Peterson isotherm models. The equilibrium data fit well on Langmuir isotherm. The monolayer adsorption capacity of Pb(II) onto Anethum graveolens as obtained from Langmuir isotherm at 30℃ was found to be 303 mg/g. This high adsorption capacity of Anethum graveolens places this biosorbent as one of the best adsorbents for removal of Pb(II) from aqueous effluents.

关键词： Anethum Graveolens Biomass Bioadsorption Pb(II) Removal Adsorption Kinetic

Methodologies of Secret-Key Agreement Using Wireless Channel Characteristics

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ZTE Communications 2013年第3期11卷 20-25页

作者： Syed Taha ali Vijay Sivaraman School of Electrical Engineering and Telecommunications University of New South Wales

In this article, we give an overview of current research on shared secret-key agreement between two parties. This agreement is based on radio wireless channel characteristics. We discuss the advantages of this approach over traditional cryptographic mechanisms and present the theoretical background of this approach. We then give a detailed description of the key-agreement process and the threat model, and we summarize the typical performance metrics for shared secret-key agreement. There are four processes in shared secret-key agreement： sampling, quantization, information reconciliation, and privacy amplification. We classify prior and current research in this area according to innovation on these four processes. We conclude with a discussion of existing challenges and directions for future work.

关键词： physical-layer security secret key generation

A Glance of Means for Policy-Making in Sultan Hossien Bayqara's Court

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丝绸之路研究集刊 2021年第2期 351-371+395-396页

作者： Han Zhongyi Seyyed ali Mazinani Shaanxi Normal University Allamah Tabtabai'e University

The emergence of Turcko-Mongols in Iranian historical perspective has brought along its own political,social,cultural and economic traditions,which are inconsistent with original backgrounds of this *** inconsistency stems from two different types of civilization to which the Iranian society and TurckoMongols belong:one is urban and sedimentary,and the other is nomadic and *** this perspective,any potentiality of unification or integration combination of the two ethnic groups is regarded as *** Timurid dynasty was not an exception to this *** encounter between the policy of steppe and urban has caused to the chaos of the statecraft mechanism,tracing any rank and hierarchy is a painstaking *** the situation,policy implementation is inevitably achieved through accessible means rather than political *** paper employing a descriptive-explicative approach moves to distinguish and classify means for policy-making of three prevalent parties in the Timurid court,*** men of sword,the men of pen and the Sultan himself.

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Effect of Severe Temperatures and Restraint on Instability and Buckling of Elliptical Steel Columns

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Open Journal of Civil Engineering 2018年第1期8卷 41-57页

作者： F. ali A. Nadjai FireSERT School of the Built Environment University of Ulster Newtownabbey UK

This paper presents the findings of an experimental research to investigate the performance of axially restrained elliptical hollow (EHS) steel columns subjected to severe hydrocarbon fire. The test programme involved 12 steel columns presenting 2 oval sections 200?×?100?×?8?mm and 300?×?150?×?8?mm and yielding 2 slenderness?λ?= 51 and 33. The 1800?mm columns were tested under loading ratios ranging between 0.2 and 0.6 of the ultimate strength determined using EC3 and under axial restraint degree ranging from 0 to 0.16.? The obtained results of axial displacements, lateral displacements, measured restraint forces, and high temperatures are presented in the paper. It was found that introducing restraint to the columns with elliptical section produces high restraint forces which reduce the time to lose lateral stability. This is more evident in cases of lower load ratios than the higher load ratios. The numerical study presented in this paper involved building a finite element model to simulate the columns behaviour in fire. The model was validated using the test results obtained from unrestrained and restrained columns fire tests. The model demonstrated good agreement in the prediction of failure times and failure mechanisms of local and overall buckling. The FEM model was then used to conduct a parametric analysis involving factors of slenderness, restraint and loading. The conclusions drawn for this research are presented at the end of the paper.

关键词： Elliptical Columns Steel Fire Restraint Buckling

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Bride and Prejudice

ChinAfrica 2017年第2期9卷 32-35页

作者： Edwin Nyirongo Nuru ali Despite challenges Africa strengthens a wide-ranging series of campaigns toaddress the deep-rooted scourge of child marriage

THERESA Kachindamoto had been appointed inkosi - paramount chief - of Dedza District in central Malawi for only a year when she came across a 13-year old carrying a crying baby in her arms.

关键词： Bride and Prejudice

On Certain Properties of Trigonometrically ρ-Convex Functions

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Advances in Pure Mathematics 2012年第5期2卷 337-340页

作者： Mohamed Sabri Salem ali Department of Mathematics Faculty of Basic Education PAAET Shamiya Kuwait

The aim of this paper is to prove that the average function of a trigonometrically ρ-convex function is trigonometrically ρ-convex. Furthermore, we show the existence of support curves implies the trigonometric ρ-c... 详细信息

关键词： Generalized Convex Functions Trigonometrically ρ-convex Functions Supporting Functions Average Functions Extremum Problems