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Refining Soil Organic matter Determination by Loss-on-ignition

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Pedosphere 2011年第4期21卷 473-482页

作者： m.H.SALEHi O.HASHEmi BENi H.BEigi HARCHEgANi i.ESFAndiARPOUR BORUJENi H.R.mOTAgHiAN Department of Soil Science College of AgricultureShahrekord University Department of Soil Science College of AgricultureVali-e-Asr University

Wet oxidation procedure,i.e.,Walkley-Black (WB) method,is a routine,relatively accurate,and popular method for the determination of soil organic matter (SOm) but it is time-consuming,costly and also has a high potential to cause environmental pollution because of disposal of chromium and strong acids used in this ***,loss-on-ignition (LOi) procedure,a simple and cheap method for SOm estimation,which also avoids chromic acid wastes,deserves more *** aims of this research were to study the statistical relationships between SOm determined with the LOi (SOmLOi) and WB (SOmWB) methods to compare the spatial variability of SOm in two major plains,Shahrekord and Koohrang plains,of Chaharmahal-va-Bakhtiari Province,*** surface soil samples (0-25 cm) were randomly collected in each plain to determine SOm using the WB method and the LOi procedure at 300,360,400,500 and 550 ℃ for 2 *** samples covered wide ranges of soil texture and calcium carbonate equivalent (CCE).The general linear form of the regression equation was calculated to estimate SOm LOi from SOm obtained by the WB method for both overall samples and individual *** soil samples were also randomly selected to compare the SOm and CCE before and after ignition at each *** accuracy of the continuous maps generated for the LOi and WB methods was considered to determine the accordance of two *** showed a significant positive linear relationship between SOm LOi and SOm *** of determination (R2) of the equations for individual plains were higher than that of the overall *** of determination and line slopes decreased and root mean square error (RmSE) increased with increasing ignition temperature,which may be due to the mineral structural water loss and destruction of carbonates at higher temperatures.A temperature around 360 ℃ was identified as optimum as it burnt most organic carbon,destroyed less inorganic carbon,cau

关键词： calcium carbonate equivalent ignition temperature kriged maps spatial variability wet oxidation

A New Hybrid System Design for Thermal Energy Storage

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Journal of Thermal Science 2020年第5期29卷 1300-1308页

作者： CEYLA ilhan ALi ismail Hamad guma ERgUN Alper gUREL Ali Etem ACAR Bahadir iSLAm Nurse Department of Energy Systems Engineering Faculty of TechnologyKarabtik UniversityKarabik 78050Turkey Department of mechanical and manufacturing Engineering Faculty of TechnologyDuzce UniversityDtizce 81620Turkey

Due to some serious environmental problems like global warming and greenhouse effect,studies on solar energy systems are being conducted all over the *** studies conducted in recent years are on hybrid designs in which solar energy systems can realize both electricity and heat production at the same *** this way,both electrical energy and heat energy can be generated from the same system in this study,the design and analysis of a concentrated solar air collector with a heat storage unit were carried *** the solar air collector,heat energy was depot in paraffin wax,and the electrical energy which was stored in the battery using the PV(photovoltaic)modules in the system enabled the operation of the system *** experiments which aimed at determining system performance were carried out in winter when the ambient temperature was *** experiments were performed with or without a heat storage unit,and a comparative analysis was *** was found that the temperature of the air released from the collector ranged from 15°C to 40°C when the exterior temperature was-5°*** average efficiency of the concentrated system without the heat storage unit was calculated as 67%.The average efficiency of the concentrated system with the heat storage unit was calculated as 96%.

关键词： heat storage phase change material concentrated solar air collector

Predictive fatigue crack growth law of high-strength steels

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Journal of materials Science & Technology 2022年第5期100卷 46-50页

作者： H.F.Li P.zhang B.Wang z.F.zhang Laboratory of Fatigue and Fracture for materials Shi-changxu Innovation Center for Advanced MaterialsChinese Academy of SciencesInstitute of Metal ResearchShenyang 110016China State Key Laboratory of mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China

The fatigue resistance of metallic materials is generally attributed to both strength and ***,these properties are mutually exclusive in most *** theories like Paris’law only provide some data correlation schemes rather than a predictive capability,which cannot satisfactorily guide the anti-fatigue *** this study,for the first time,the predictive fatigue crack growth rate law is proposed by considering the effects of both strength and ***,a quantitative criterion is established for judging the fatigue crack resistance of high-strength *** predictive law would provide a unique view to the quantitative anti-fatigue design of metallic materials.

关键词： Fatigue crack growth Strength and toughness Paris’law High-strength steels

Adipokines and proinflammatory cytokines, the key mediators in the pathogenesis of nonalcoholic fatty liver disease

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World Journal of gastroenterology 2014年第48期20卷 18070-18091页

作者： Sanja Stojsavljevi? marija gomer?i? Pal?i? Lucija Virovi? Juki? Lea Smir?i? Duvnjak marko Duvnjak Department of gastroenterology and Hepatology Clinic of Internal medicine Clinical hospital center "Sestre milosrdnice" 10000 Zagreb Croatia University Hospital for Diabetes Endocrinology and Metabolic Diseases Vuk Vrhovac 10000 Zagreb Croatia

Nonalcoholic fatty liver disease (NAFLD) is a condition in which excess fat accumulates in the liver of a patient with no history of alcohol abuse or other causes for secondary hepatic steatosis. The pathogenesis of NAFLD and nonalcoholic steatohepatitis (NASH) has not been fully elucidated. The “two-hit“ hypothesis is probably a too simplified model to elaborate complex pathogenetic events occurring in patients with NASH. it should be better regarded as a multiple step process, with accumulation of liver fat being the first step, followed by the development of necroinflammation and fibrosis. Adipose tissue, which has emerged as an endocrine organ with a key role in energy homeostasis, is responsive to both central and peripheral metabolic signals and is itself capable of secreting a number of proteins. These adipocyte-specific or enriched proteins, termed adipokines, have been shown to have a variety of local, peripheral, and central effects. in the current review, we explore the role of adipocytokines and proinflammatory cytokines in the pathogenesis of NAFLD. We particularly focus on adiponectin, leptin and ghrelin, with a brief mention of resistin, visfatin and retinol-binding protein 4 among adipokines, and tumor necrosis factor-α, interleukin (iL)-6, iL-1, and briefly iL-18 among proinflammatory cytokines. We update their role in NAFLD, as elucidated in experimental models and clinical practice.

关键词： Nonalcoholic fatty liver disease Cytokines Adipokines Adiponectin Leptin Tumor necrosis factor-α interleukin-6 interleukin-1 interleukin-18 ghrelin

Revision of the genus inouenola László,Ronkay & Witt,2010(Lepidoptera,Noctuoidea,Nolidae,Nolini) with description of 6 new species

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Journal of Forestry Research 2015年第2期26卷 457-467页

作者： gyula m.László gábor Ronkay László Ronkay Fadrusz u.25 Budapest 1114Hungary Heterocera Press Ltd. Szt.István krt.4Budapest 1137Hungary Department of zoology Hungarian Natural History Museum

This paper contains the revision of the genus inouenola La′szlo′,Ronkay ＆ Witt,2010 and presents the checklist of the known taxa and their distribution and the description of six new species（inouenola brunneolinea... 详细信息

关键词： inouenola Nolini Nolidae Noctuoidea New species New status South East Asia

fd-DOmAiNS And rf-DiSJUNCTiVE LANgUAgES

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Chinese Science Bulletin 1989年第5期34卷 356-360页

作者：郭聿琦 C.m.REiS g.THiERRiN Lanzhou University University of Western Ontario

Ⅰ. iNTROOUCTiONLet X be a nonempty finite set called an alphabet, and X~* the free monoid generated by X and X^+=X~*—nd, where 1 is the identity of X~* called the empty word over X. Elements and subsets of X~* are called words and languages over X respectively. The length of a word x which is the number of the letters occurring in x will be denoted by lg(x).

关键词： fd-domain rf-disjunctive language uniformly dense language.

Simultaneous 45.2 gbit/s 4-PAm data and 8 gHz reference frequency clock signal transmission over DWDm VCSEL channels for optical interconnects

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Optoelectronics Letters 2019年第1期15卷 48-51页

作者： g.m.isoe A.W.R.Leitch T.B.gibbon Centre for Broadband Communication Nelson Mandela University

in this paper, we propose and experimentally demonstrate a vertical cavity surface emitting laser(VCSEL)-based simultaneous 45.2 gbit/s(2×22.6 gbit/s) 4-PAm data and 8 gHz(2×4 gHz) phase modulated reference frequency(RF) clock signal transmission dense wavelength division multiplexing(DWDm) system for optical interconnects. Two low-cost power-efficient 10 g VCSEL channels with central wavelengths at 1 550.71 nm and 1 551.11 nm are separately modulated with 22.6 gbit/s 4-PAm data, therefore doubling the channel bit rate. Carrier spectral efficiency per channel is further maximized by exploiting the phase attribute in transmission of a 4 Hz RF clock signal. To further maximize the network capacity, the two VCSEL channels are densely multiplexed at 0.4 nm spacing. We therefore experimentally achieve the network data rate of 45.2 gbit/s with 8 gHz phase modulated RF clock signal. The results show that receiver sensitivities of-11.02 dBm and-9.98 dBm are experimentally achieved for VCSEL channels of 1 550.71 nm and 1 551.11 nm respectively without the phase modulated RF clock signal. However, the introduction of a phase modulated clock signal contributes to a maximum interference penalty of 0.57 dBm and 0.41 dBm for the considered channels respectively. Simultaneous distribution of transmission data and reference clock signal over shared network structure maximizes the carrier spectral efficiency and network capacity with low cost.

关键词： VCSEL Simultaneous reference

Hyperparameter Tuned Deep Learning Enabled Cyberbullying Classification in Social media

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Computers, materials & Continua 2022年第12期73卷 5011-5024页

作者： mesfer Al Duhayyim Heba g.mohamed Saud S.Alotaibi Hany mahgoub Abdullah mohamed Abdelwahed motwakel Abu Sarwar zamani mohamed i.Eldesouki Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia Department of Electrical Engineering College of EngineeringPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of information Systems College of Computing and Information SystemUmm Al-Qura UniversitySaudi Arabia Department of Computer Science College of Science&Art at MahayilKing Khalid UniversityMuhayel AseerSaudi Arabia Faculty of Computers and information Computer Science DepartmentMenoufia UniversityEgypt Research Centre Future University in EgyptNew Cairo11845Egypt Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAl-KharjSaudi Arabia Department of information System College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia

Cyberbullying(CB)is a challenging issue in social media and it becomes important to effectively identify the occurrence of *** recently developed deep learning(DL)models pave the way to design CB classifier models with maximum *** the same time,optimal hyperparameter tuning process plays a vital role to enhance overall *** study introduces a Teacher Learning genetic Optimization with Deep Learning Enabled Cyberbullying Classification(TLgODL-CBC)model in Social *** proposed TLgODL-CBC model intends to identify the existence and non-existence of CB in social media ***,the input data is cleaned and pre-processed to make it compatible for further *** by,independent recurrent autoencoder(iRAE)model is utilized for the recognition and classification of ***,the TLgO algorithm is used to optimally adjust the parameters related to the iRAE model and shows the novelty of the *** assuring the improved outcomes of the TLgODLCBC approach,a wide range of simulations are executed and the outcomes are investigated under several *** simulation outcomes make sure the improvements of the TLgODL-CBC model over recent approaches.

关键词： Social media deep learning cyberbullying cybersecurity hyperparameter optimization

New method for rekindling the explosive waves in maxwellian space plasmas

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Plasma Science and Technology 2020年第12期22卷 48-58页

作者： g C DAS Kalikadas Road Byelane HazraparaCoochbehar-736101West BengalIndia

Our interest is to study the nonlinear wave phenomena in complex plasma constituents with maxwellian electrons and ions. The main aim is to use a new method known as the(g′/g)method to exhibit the effects of dust charge fluctuations on the evolution of nonlinear waves. The coherent features of the shock and solitary waves along with the generation of high-energy waves have been amplified through the solution of the Korteweg–de Vries–Burgers equation,and the different natures of the waves were found successfully. Results are discussed graphically with the thoughtful choice of typical plasma parameters from different space plasma environments, exactly those found in cosmic dusty plasmas laden in ionospheric auroral region,radial spokes of Saturn's rings, planetary nebulae and solar F-corona region. All conclusions are in good accordance with the actual occurrences and could be of interest to further investigations of space. moreover, the applicability of the present method is hoped to be a great enhancement by its use as ingenious mechanism used to evaluate the soliton dynamics and Burgers shock waves.

关键词： maxwellian complex plasma nonlinear waves soliton and shock propagation (g′/g)method space plasmas