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Heat and mass transfer of a circular porous moist object located in a triangular shaped vented cavity

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Journal of Central South University 2024年第6期31卷 1956-1972页

作者： selIMEFENDIGIL Fatih OZCAN COBAN Seda OZTOP Hakan F Department of Mechanical Engineering College of EngineeringKing Faisal UniversityAl Ahsa 31982Saudi Arabia Department of Mechanical Engineering Manisa Celal Bayar UniversityManisa 45140Turkey Department of Mechanical Engineering Technology FacultyFırat UniversityElazığTurkey

Heat and mass transfer of a circular-shaped porous moist object inside a two-dimensional triangle cavity is investigated by using finite element *** porous object is considered to be a moist food sample,located in the middle of the cavity with inlet and outlet ports with different configurations of inlet/outlet *** drying performance is numerically assessed for different values of Reynolds numbers(between 50 and 250),dry air inlet temperature(between 40 and 80℃)and different locations of the *** is observed that changing the port locations has significant impacts on the flow recirculaitons inside the triangular chamber while convective drying performance is highly *** moisture content reduces with longer time and for higher Reynolds number(Re)*** P4 where inlet and outlet ports are in the middle of the walls provides the most effective configuration in terms of convective drying performance while the worst case is seen for P1 case where inlet and outlet are closer to the corners of the *** is a 192% difference between the moisture reduction of these two cases at Re=250,T=80℃ and t=120 min.

关键词： convective drying porous domain cavity flow inlet/exit port finite element method

Seventy-five years of masting and rodent population peaks in Norway: Why do wood mice not follow the rules?

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Integrative Zoology 2016年第5期11卷 388-402页

作者： Vidar selÅS Department of Ecology and Natural Resource Management Norwegian University of Life SciencesÅsNorway

Wood mouse(Apodemus sylvaticus)populations are expected to show a peak in autumn in the year after a mast year of sessile oak(Quercus petraea),because stored acorns increase winter *** Aust-Agder,South Norway,only 16 of 34 mast years from 1939-2014 were followed by a year with a peak in the wood mouse *** many of the remaining instances,there rather was a minor peak 2 or 3 years after the *** multiple logistic regression models,the probability of a wood mouse population peak after a mast year of sessile oak was positively related to a snow-corrected temperature index of the previous winter and negatively to a small rodent population index of the previous *** present study thus supports the hypothesis that longer periods with snow-free ground and subzero temperatures negatively affect wood mouse winter ***cause it may be difficult for wood mice to survive on a diet consisting of acorns alone,the negative relationship with the rodent population index of the previous year is most likely caused by an over-exploitation of necessary alternative food resources,such as other plant seeds and *** acorns not utilized during one winter are assumed to benefit wood mice in a succeeding winter,giving a delayed population peak relative to the mast year.

关键词： acorns masting seed production winter temperature wood mouse

Stochastic ordering by g-expectations

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Probability, Uncertainty and Quantitative Risk 2021年第1期6卷 61-98页

作者： sel Ly Nicolas Privault School of Physical and Mathematical Sciences Division of Mathematical SciencesNanyang Technological UniversitySingapore 637371

We derive sufficient conditions for the convex and monotonic g-stochastic ordering of diffusion processes under nonlinear g-expectations and *** approach relies on comparison results for forward-backward stochastic differential equations and on several extensions of convexity,monotonicity,and continuous dependence properties for the solutions of associated semilinear parabolic partial differential *** to contingent claim price comparison under different hedging portfolio constraints are provided.

关键词： Stochastic ordering g-expectation g-evaluation g-risk measures Forward-backward stochastic differential equations Parabolic Pdes Propagation of convexity

Tor topography in Giresun mountains,Türkiye

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Journal of Mountain Science 2023年第11期20卷 3121-3137页

作者： UZUN Ali AYLAR Faruk ZEYBEK Halilİbrahim ALEMDa.selçuk Ondokuz Mayis University Faculty of Art and ScienceGeography DepartmentSamsun 55200Türkiye Gümüşhane University Faculty of Engineering and Natural Sciences Department of Geological EngineeringGümüşhane 29100Türkiye

Tors are mound-like rock landforms,resistant to erosion,that may sometimes reach the size of several storeys of house by *** may develop in different climate regions and different rock types,led by granitic *** this study,tors developed in granitic rocks around Yaylal?village linked to Kürtün county in Gümü?hane were *** study area is located in the eastern part of the Giresun mountain range in northeastern Turkey,2000-2300 m above sea *** aim of the study is to determine the natural environmental characteristics in tor formation and to reveal the effect of bedrock on tor *** field studies,18 tors were selected by noting location,size and structural features,and dimensions were *** sections were first made from the rock samples taken from the tors and then the mineralogical composition was investigated by modal analysis *** a result of this analysis,it was determined that the bedrock forming the tors is *** the field observations,it was determined that the intersecting vertical joints supported the formation of castle-like tors,while the horizontal joints supported the formation of pita pileshaped *** are also pseudokarstic shapes resembling kamenitza and karst *** conclusion,joint sets causing local resistance differences directed the formation of tors,while excess slope affected surface erosion and suitability of climate conditions-controlled weathering rate.

关键词： Joint sets Granite Northern Anatolian Mountains Gümü?hane Türkiye

Investigation of the crystal structure and magnetic properties of Nd_(3-x)GdxCo_(11)B_4 borides

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Journal of Rare Earths 2011年第5期29卷 466-470页

作者： seluk Kervan Nazmiye Kervan Ayse zdemir Hseyin Szeri Nevsehir University Faculty of Arts and SciencesPhysics Department TUBTAK-UME National Metrology Institute

Polycrystalline samples of pseudo-ternary intermetallic Nd3–xGdxCo11B4 （x=0,1,2,3） borides prepared by standard arc-melting were characterized by X-ray powder diffraction （XRPD）,magnetization and differential scanning calorimetry （DSC） measurements. The X-ray diffraction patterns indicated the hexagonal Ce3Co11B4-type structure with P6/mmm space group for each composition. The substitution of Gd for Nd led to a decrease of the unit-cell parameters a and the unit-cell volume V,while the unit-cell parameter c increased linearly. Magnetic measurements indicated that all samples were ordered magnetically below the Curie temperature. The Curie temperatures increased as Nd was substituted by Gd. The saturation magnetization at 4 K decreased upon the Gd substitution up to x=1,and then increased.

关键词： intermetallics magnetically ordered materials magnetic measurements rare earths

Establishment and development of the World Association for Sedimentation and Erosion Research

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International Journal of Sediment Research 2023年第6期38卷 901-909页

作者： Cheng Liu Zhaoyin Wang des E.Walling International Research and Training Center on Erosion and Sedimentation Department of Hydraulic Engineering Tsinghua University Geography Faculty of EnvironmentScience and EconomyUniversity of Exeter

Problems of soil erosion and sedimentation are issues of global *** the intensification of global change and the impacts of human activities,many countries are facing severe challenges from wideranging sediment-related *** prevention and control of sediment disasters and the rational use of soil and sediment resources are important requirements for the sustainable development strategies of all *** sediment problems are closely related to social,economic,and other human activities,the effective solution of sediment problems requires the concerted efforts of experts in different fields and thus an interdisciplinary approach is *** view of the increasing recognition of sediment as a topic of global significance and the need to promote interdisciplinary research in this field,the World Association for Sedimentation and Erosion Research(WASER) was inaugurated in *** this paper the history of the establishment of WASER is reviewed and its main activities are briefly *** series of International Symposia on River Sedimentation(ISRS) has served as the official symposium of WASER since *** triennial technical events have been held in China,Russia,Japan,South Africa,and Germany with about 2,000 *** addition to sponsoring the ISRS,WASER has to date also sponsored/organized or co-sponsored/co-organized over 30 other international conferences,workshops,training courses,and study tours besides sponsoring the *** adoption of the International Journal of Sediment Research(IJSR) as the official journal of WASER in 2004has also played an important role in increasing the exposure of the *** activities have served to raise WASER’s profile as well as promoting collaboration with agencies and other organizations working in the field of erosion and *** types of prizes and honors are awarded by *** include the International Qian Ning Prize for Erosion and Sedimentation Technolog

关键词： Erosion and sedimentation Association Symposia Journal

The predictive value of triglyceride-glucose index for in-hospital and one-year mortality in elderly non-diabetic patients with ST-segment elevation myocardial infarction

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Journal of Geriatric Cardiology 2022年第8期19卷 610-617页

作者： FaysalŞaylık TufanÇınar Murat selçuk İbrahim Halil Tanboğa Department of Cardiology Van Training and Research HospitalVanTurkey Department of Cardiology Sultan II.Abdülhamid Han Training and Research HospitalIstanbulTurkey Department of Cardiology and Biostatistics Nisantasi University Medical SchoolIstanbulTurkey

BACKGROUND Triglyceride-glucose(TyG)index,a reliable marker of insulin resistance,was associated with cardiovascular morbidity and *** study aimed to evaluate the predictive value of TyG index for mortality in elderly non-diabetic pa-tients with ST-segment elevation myocardial infarction(STEMI).METHODS In total,430 non-diabetic patients aged over 65 years with STEMI were consecutively *** TyG index was calculated by using the following formula:TyG index=ln(fasting triglyceride×fasting glucose/2).The 5-item modified frailty index score was utilized to determine *** were divided into three groups based on TyG index *** Patients included into high TyG index tertile were male and had higher body mass index,glucose,triglyceride,low-density lipoprotein cholesterol,5-item modified frailty index and GRACE risk score;and had low systolic blood pressure,estim-ated glomerular filtration rate and left ventricular ejection fraction.A one-unit increase in TyG index was associated with 3.03 ex-tra cases per 1000 person-day for in-hospital mortality and 0.29 extra cases per 1000 person-day for long-term *** was a non-linear relationship between TyG index and the risk of mortality with an increased risk above 8.5 for TyG ***-Meier survival curves revealed that patients in high TyG index tertile had higher in-hospital and long-term mortality rates than those in low TyG index *** This was the first study to demonstrate that the TyG index could predict in-hospital and long-term mortality in elderly non-diabetic STEMI patients.

关键词： patients mortality diabetic

Global investigation of the ionospheric irregularities during the severe geomagnetic storm on September 7-8, 2017

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Geodesy and Geodynamics 2020年第3期11卷 211-221页

作者： Ramazan Atıcı selçuk Sagır Mus¸Alparslan University Faculty of EducationDepartment of Classroom TeachingMus¸Turkey Mus¸Alparslan University Faculty of Science and ArtDepartment of PhysicsMus¸Turkey

In this study,the global effects of the severe geomagnetic storm on the Earth’s ionosphere on September5 e9,2017 with Coronal Mass Ejections(CMEs)associated with X-9.3 flares on September 6,2017 were investigated by the Rate of Total Electron Content(TEC)Index(ROTI).ROTI was used as a criterion of ionospheric irregularities that took place during the *** study was conducted with TEC values obtained from fifty stations connected to the International GNSS System(IGS)-GPS network for five different latitude *** a result,it was observed that the irregularities in the high latitude regions of the southern hemisphere were greater in number in comparison with those at the high latitude regions of the northern hemisphere during the *** was observed that these irregularities generally occurred during the main and recovery phases of the storm at all *** weak and moderate ionospheric irregularities that developed at high latitudes during the storm were more in the southern ***,moderate ionospheric irregularities in high latitudes of both hemispheres took place in eastern longitudes(18 oE-160 oE).However,ionospheric irregularities in the mid-latitude regions were observed in more stations at the northern hemisphere than at the southern ***,ionospheric irregularities during the storm developed at eastern longitudes in all sectors.

关键词： Earth's ionosphere Geomagnetic storm Ionospheric irregularities ROTI

Annual Change of the Testosterone Hormone in Male White Goats

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Agricultural Sciences in China 2011年第2期10卷 312-316页

作者： Hüseyin Polat Güsel Dellal Ilkay Baritci Erkan Pehlivan Department of Biology Faculty of Art and ScienceAksaray University Department of Animal Faculty of AgricultureAnkara University Department of Animal Faculty of AgricultureGazi Osman Pasha University

In this research,changes of testosterone hormone in the blood serum of 9 male（3 of age 2 and 6 of age 4） White goats have been studied for a duration of one *** performed show that the general monthly averages of the testosterone hormone of the male White goats in the period of 12 months starting in January were（2.11±.73）,（2.22±.52）,（2.44±.59）,（2.10±.41）,（2.35±.00）,（3.42±.48）,（4.77±.32）,（5.61±.40）,（7.91±.24）,（10.84±.59）,（7.82±.60）,and（2.63±.61） ng mL-1,respectively（P0.05）.The effect of the age factor on the testosterone production in White goats（age 2 and 4） was generally significant（P 0.05） for differences among months in each age group,but not significant for differences between age groups in each *** testosterone hormone levels of male White goats encountered significant changes（P0.05） with respect to the season.

关键词： White goat age testosterone