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Changes in carbon stocks of soil and forest floor in black pine plantations in Turkey

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Journal of Forestry Research 2021年第1期32卷 339-347页

作者： SükrüTeoman Güner Dilek Güner General Directorate of Forestry Research Institute for Forest Soil and Ecology26160 EskisehirTurkey

The objectives of this study were:(1)to determine carbon stock changes in the soil and forest floor of black pine(Pinus nigra ***)plantations in Turkey;(2)to determine the effects of thinning on annual carbon accumulation in both;and,(3)to investigate relationships between annual carbon storage in soil and forest floor and stand characteristics of black *** were taken in 90 plots from stands at the pole(dbh=11.0–19.9 cm)and sawlog(dbh=20.0–35.9 cm)*** analyses of soil and forest floor samples showed that in unthinned plantations signifi cant organic carbon was sequestered an average of 1.47 Mg ha^−1 a^−1 in the soil and 0.20 Mg ha^−1 a^−1 in the forest *** carbon sequestered annually in the soil was signifi cantly lower in thinned than in unthinned stands,while diff erences in the forest floor were insignifi *** were positive correlations between carbon sequestered in the soil and stand age,average DBH,mean stand height,basal area,and site *** sequestered the forest floor increased with basal *** a result,carbon sequestered in the soil should not be ignored in greenhouse gas inventories because carbon stored belowground was approximately 70%of the aboveground pool.

关键词： Pinus nigra Belowground Forest floor Carbon sequestration Thinning

A Review on Pharmacological Significance of Genus Jatropha(Euphorbiaceae)

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Chinese Journal of Integrative Medicine 2012年第11期18卷 868-880页

作者： Surendra.kr.Sharma Harneet Singh Medicine Press and Springer-Verlag Berlin Heidelberg 2012 Guru Jambheshwar University of Science and Technology-Pharmaceutical Sciences

A number of herbs belonging to the genus Jatropha of Euphorbiaceae family are noted for their medicinal benefits. The genus Jatropha is one of the prospective biodiesel yielding crops. The plants which have been so far explored include J. curcas, J. gossypifolia, J. glandu/ifera, J. multifida and J. podagrica. Although, the plants of this genus are widely distributed, there is an exiguity of scientific literature proclaiming the medicinal benefits of the plants belonging to genus Jatropha. The present paper is a pragmatic approach to accrue the findings on this very significant genus.

关键词： Jatropha Euphorbiaceae pharmacological activity

Contribution of Fluid Dynamics to Woodwind Instruments Investigations of Timbre and Pitch of Bassoon Bocals

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Journal of Thermal Science 2005年第3期14卷 264-266页

作者： Roger GRUNDMANN Johannes BAUMGART Andreas RICHTER Hans krüGER Technische Universitt Dresden Institute for Aerospace Engineering D-01062 Dresden Germany ProfessorTechnische Universitt Dresden Institute for Aerospace Engineering D-01062 Dresden GermanyTechnische Universitt Dresden Institute for Aerospace Engineering D-01062 Dresden GermanyTechnische Universit?t Dresden Institute for Aerospace Engineering D-01062 Dresden Germany

The discussed topic of isolating certain parameters which describe the timbre in connection with bocals of bassoons is of major interest for manufacturers and artist likewise since a reduction in the overall shear stress of these kinds of technical diffusors is very helpful but not sufficient. The timbre seen from the side of the musician has to be the same. Up to now two criteria have been isolated which have a deep influence on the easier blowing of the bassoon and on the comparable timbre due to geometrical reasons. If the geometrical outer contour is designed carefully, it is possible to modify the shape and preserve the timbre.

关键词： musical instrument bocal bassoon timbre principal component analysis

Condenser Optimization in Steam Power Plant

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Journal of Thermal Science 2003年第2期12卷 176-178,192页

作者： SükrüBekdemir Recepztürk ZehraYumurtac Yildiz Technical University Mechanical Engineering DepartmentIstanbulTurkeyYildiz Technical UniversityMechanical Engineering DepartmentIstanbulTurkeyYildiz Technical UniversityMechanical Engineering DepartmentIstanbulTurkey

In this paper the effects of the condenser design parameters(such as turbine inlet *** power and condenser pressure) on heat transfer area,cooling water *** cost and specific energy generation cost are studied for sur... 详细信息

关键词： condensers steam power plants energy cost.

A generic method for rock mass classification

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Journal of Rock Mechanics and Geotechnical Engineering 2018年第1期10卷 102-116页

作者： Vitthal M.Khatik Arup kr.Nandi Department of Mechanical Engineering Indian Institute of TechnologyKanpur208016India Engineering Design Group CSIR-Central Mechanical Engineering Research InstituteMG AvenueDurgapur713209India

Rock mass classification(RMC) is of critical importance in support design and applications to mining,tunneling and other underground excavations. Although a number of techniques are available, there exists an uncertainty in application to complex underground works. In the present work, a generic rock mass rating(GRMR) system is developed. The proposed GRMR system refers to as most commonly used techniques, and two rock load equations are suggested in terms of GRMR, which are based on the fact that whether all the rock parameters considered by the system have an influence or only few of them are influencing. The GRMR method has been validated with the data obtained from three underground coal mines in India. Then, a semi-empirical model is developed for the GRMR method using artificial neural network(ANN), and it is validated by a comparative analysis of ANN model results with that by analytical GRMR method.

关键词： Rock mass classification(RMC) Generic system Rock load Mathematical model Artificial neural network(ANN)

A Combined Approach of Principal Component Analysis and Support Vector Machine for Early Development Phase Modeling of Ohrid Trout(Salmo Letnica)

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Computer Modeling in Engineering & Sciences 2021年第3期126卷 991-1009页

作者： Sunil kr.Jha Ivan Uzunov Xiaorui Zhang School of Computer and Software Nanjing University of Information Science and TechnologyNanjing210044China Faculty of Computer Science and Engineering University of Information Science and TechnologyOhrid6000Republic of Macedonia

Ohrid trout(Salamo letnica)is an endemic species of fish found in Lake Ohrid in the Former Yugoslav Republic of Macedonia(FYROM).The growth of Ohrid trout was examined in a controlled environment for a certain period,thereafter released into the lake to grow their natural *** external features of the fish were measured regularly during the cultivation period in the laboratory to monitor their *** data mining methods-based computational model can be used for fast,accurate,reliable,automatic,and improved growth monitoring procedures and classification of Ohrid *** this motivation,a combined approach of principal component analysis(PCA)and support vectormachine(SVM)has been implemented for the visual discrimination and quantitative classification of Ohrid trout of the experimental and natural breeding and their growth *** PCA results in better discrimination of breeding categories of Ohrid trout at different development phases while the maximum classification accuracy of 98.33% was achieved using the combination of PCA and *** classification performance of the combination of PCA and SVM has been compared to combinations of PCA and other classification methods(multilayer perceptron,naive Bayes,randomcommittee,decision stump,random forest,and random tree).Besides,the classification accuracy of multilayer perceptron using the original features has been studied.

关键词： Salamo letnica growth phase modeling PCA SVM

Add on the next level—the time point of the type I IFN response orchestrates the immune response

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Cellular & Molecular Immunology 2020年第8期17卷 791-793页

作者： Angela Wedekind David Fritzsch Andrea.kröger Research Group Molecular Microbiology Institute of Microbiology and Hospital HygieneOtto von Guericke University39120MagdeburgGermany Research Group Innate Immunity and Infection Helmholtz Centre for Infection Research38124BraunschweigGermany

The directed control of an effective cellular or adaptive immune response is the aim of vaccine strategies and tumor *** antibodies prevent the spread of pathogens,while efficient cellular immunotherapy is used to overcome T-cell exhaustion and unresponsiveness toward *** such settings,the type I interferon(IFN)system mediates pleiotropic effects of the immune system that can be either immunostimulating or *** a recent work,De Giovanni et *** a novel regulatory checkpoint by which type I IFN regulates CD4^(+)T-cell *** study dissects the time point of type I IFN induction as a central regulator of the adaptive immune response that determines the balance between humoral and cellular *** findings identify an intriguing and previously undescribed checkpoint that can potentially be manipulated for ***,the authors demonstrate that CD4^(+)T-cell polarization could be influenced by manipulating the IFN response during infection.

关键词： al. vaccine interferon

Mitigation of atrazine,S-metolachlor,and diazinon using common emergent aquatic vegetation

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Journal of Environmental Sciences 2017年第6期29卷 114-121页

作者： Matthew T.Moore Martin A.Locke Robert krǒger Water Quality and Ecology Research Unit USDA Agricultural Research ServiceNational Sedimentation LaboratoryOxfordMS 38655USA

By the year 2050, the population of the United States is expected to reach over 418 million, while the global population will reach 9.6 billion. To provide safe food and fiber, agriculture must balance pesticide usage against impacts on natural resources. Challenges arise when storms cause runoff to be transported to aquatic receiving systems. Vegetated systems such as drainage ditches and constructed wetlands have been proposed as management practices to alleviate pesticide runoff. Twelve experimental mesocosms （1.3 ±0.71 ± 0.61 m） were filled with sediment and planted with a monoculture of one of three wetland plant species （Typha latifolia, Leersia oryzoides, and Sparganium arnericanurn）. Three mesocosms remained unvegetated to serve as controls. All mesocosms were amended with 9.2 ± 0.8 μg/L, 12 ± 0.4 μg/L, and 3.1 ± 0.2 μg/L of atrazine, metolachlor, and diazinon, respectively, over a 4 hr hydraulic retention time to simulate storm runoff. Following the 4 hr amendment, non-amended water was flushed through mesocosms for an additional 4 hr. Outflow water samples were taken hourly from pre-amendment through 8 hr, and again at 12, 24, 48, 72, and 168 hr post-amendment. L. oryzoides and T. latifolia had mean atrazine, metolachlor, and diazinon retentions from B1%-55% for the first 4 hr of the experiment. Aside from S. arnericanum and atrazine （25% retention）, unvegetated controls had the lowest pesticide retention （17%-28%） of all compared mesocosms. While native aquatic vegetation shows promise for mitigation of pesticide runoff, further studies increasing the hydraulic retention time for improved efficiency should be examined.

关键词： Phytoremediation Pesticide Mesocosm Wetland

Diameter distributions in Pinus sylvestris ***:evaluating modelling approaches including a machine learning technique

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林业研究:英文版 2023年第6期34卷 1829-1842页

作者： Şükrü Teoman Güner Maria J.Diamantopoulou Ramazan Özçelik Department of Forestry Ulus Vocational SchoolBartın University74600 UlusBartınTurkey Faculty of Agriculture Forestry and Natural EnvironmentSchool of Forestry and Natural EnvironmentAristotle University of Thessaloniki54124 ThessalonikiGreece Faculty of Forestry Isparta University of Applied ScienceEast Campus32260 IspartaTurkey

The diameter distribution of trees in a stand provides the basis for determining the stand’s ecological and economic value,its structure and stability and appropriate management *** pine(Pinus sylvestris L.)is one of the most common and important conifers in Turkey,so a well-planned management schedule is *** distribution models to accurately describe the stand structure help improve management strategies,but developing reliable models requires a deep understanding of the growth,output and constraints of the *** most important information derived by diameter distribution models is primary data on horizontal stand structure for each diameter class of trees:basal area and volume per unit *** predictions are required to estimate the range of products and predicted volume and yield from a forest ***,to construct an accurate,reliable diameter distribution model for natural Scots pine stands in the Türkmen Mountain region,we used Johnson’s SBdistribution to represent the empirical diameter distributions of the stands using ground-based measurements from 55 sample plots that included1219 trees in natural distribution zones of the *** an alternative,nonparametric approach,which does not require any predefined function,an artificial intelligence model was constructed based on support vector machine *** error index was calculated to evaluate the ***,both Johnson’s SB probability density function with a three-parameter recovery approach and the support vector regression methodology provided reliable estimates of the diameter distribution of these stands.

关键词： Diameter distribution Johnson’s S_(B) Support vector regression Scots pine Türkmen mountains