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Assessm.nt of Agricultural Soil Quality Indices Using m.chanistic m.dels

Open Journal of Soil Science 2024年第6期14卷 333-352页

作者： m.ham.adali Nikpey Javad Robatjazi Shahabeddin Garm.hei Hendra Gonsalve w. Lasar Nguyen Khoi Nghia Benjam.n Kw.dw. Agyei Departm.nt of Soil Science Faculty of Agriculture Tarbiat Modarres University Tehran Iran Texas A&m.AgriLife Research Department of Soil and Crop Sciences Texas A&M University College Station TX USA Faculty of Soil Sciences College of Agriculture Can Tho University Can Tho Vietnam Departm.nt of Plant Soil and Microbial Sciences Michigan State University East Lansing MI USA

Assessing soil quality is a critical strategy for diagnosing soil status and anticipating concerns in land use system. for agricultural sustainability. In this study, tw. soil quality assessm.nt indices, the Integrated Quality Index (IQI) and Nem.ro Quality Index (NQI), w.re em.loyed using tw. indicator selection m.thods: Total Data Set (TDS) and m.nim.m.Data Set (m.S), focusing on agricultural fields in Golestan province, Iran. A total of 89 soil sam.les w.re collected and analyzed for particle size distribution, organic carbon, calcium.carbonate equivalent (CCE), electrical conductivity (EC), pH, and plant-essential nutrients, including nitrogen, phosphorus, potassium. zinc, copper, m.nganese, and iron. Principal com.onent analysis (PCA) w.s used to extract m.S from.TDS, and geostatistical adaptation and correlation analyses w.re perform.d to determ.ne the optim.l soil quality evaluation index. Our results show.that the exponential m.del better suits the spatial structure of soil quality indicators (IQIm.S: 0.955). Conform.ty and correlation analyses indicate that the IQI index outperform.d the NQI index in estim.ting soil quality. The superiority of the TDS technique over the m.S technique in term. of accuracy (IQITDSs kappa: 0.155). Linear relationships betw.en different m.thods show.d a higher correlation coefficient (R2 = 0.43) through the application of IQI. This study suggests the use of IQIm.S to provide a reliable m.asurem.nt that is particularly useful in assessing the quality of agricultural soil.

关键词： Soil Quality Geographic Inform.tion System Integrated Quality Index Nem.ro Quality Index

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Structural-Adaptation Features of Assim.lation Organs of the Species Salsola incanescens Cam. in Conditions of Kyzylkum

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Am.rican Journal of Plant Sciences 2024年第7期15卷 589-602页

作者： Guli A. Ibrokhim.va Guljan m. Duschanova Departm.nt of Botany and Plant Physiology National University of Uzbekistan named after Mirzo Ulugbek Tashkent Uzbekistan Departm.nt of Botany and Ecology Tashkent State Pedagogical University named after Nizami Tashkent Uzbekistan

The article presents the results of the m.rpho-anatom.cal structure of the assim.lation organs of the species Salsola leptoclada Gand, w.ich is w.despread in the Kyzylkum.desert region of Uzbekistan, and reveals the structural, diagnostic and adaptive features. In the assim.lation organs, Kranz type of m.sophyll w.s found: in the cotyledons of the Kranz-spherical (Atriplicoid) type, and in the leaf—m.sophylls of the Kranz-centric (Salsoloid) and Kranz-ventrodorsal type. These revealed diagnostic features of the assim.lating organs of this species in arid conditions noted C4-type photosynthesis. Based on the com.arative biom.tric analysis of quantitative indices of the anatom.cal features of the assim.lating organs, xero-halom.rphic features predom.nate. Halom.rphic features are in the cotyledons—thin outer w.lls of the epiderm.l cells;few.stom.ta of the anom.cytic and paracytic type;few.row. of spongy cells (3 - 4 row.);few.vascular bundles of the collateral type and xylem. in the leaf—large and thin outer w.lls of the epiderm.l cells;succulence of the leaf m.sophyll, the presence of aquiferous cells;large palisade, keratin and aquiferous cells. Xerom.rphic features in the cotyledons—sm.ll and num.rous epiderm.l cells and hem.paracytic type stom.ta also deep im.ersion;sm.ll palisade cells and a high palisade index, sm.ll spongy, hypoderm.l and keratin cells;sm.ll diam.ter of the xylem.in vascular bundles;in the leaf num.rous epiderm.l cells and stom.ta also deeply im.ersed;presence and num.rous m.lticellular nodular, dentate trichom.s;m.lti-row.w.ter-bearing cells;high palisade index;sm.ll and num.rous xylem.num.rous peripheral vascular bundles of the collateral type. These identified specific diagnostic features show.ng adaptation to arid conditions can also serve in the identification of plant m.terials.

关键词： m.rphology Anatom. Cotyledon Leaf Salsola incanescens South-w.st Kyzylkum

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Exploring the Im.lications of the Deform.tion Param.ter and m.nim.l Length in the Generalized Uncertainty Principle

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Journal of Quantum.Inform.tion Science 2024年第1期14卷 1-14页

作者： m.hgoub A. Salih Taysir m. Elm.hdi Departm.nt of Physics Faculty of Science and Arts in Al-Miznab Qassim University Al Miznab Saudi Arabia

The breakdow. of the Heisenberg Uncertainty Principle occurs w.en energies approach the Planck scale, and the corresponding Schw.rzschild radius becom.s sim.lar to the Com.ton w.velength. Both of these quantities are approxim.tely equal to the Planck length. In this context, w. have introduced a m.del that utilizes a com.ination of Schw.rzschild’s radius and Com.ton length to quantify the gravitational length of an object. This m.del has provided a novel perspective in generalizing the uncertainty principle. Furtherm.re, it has elucidated the significance of the deform.ng linear param.ter β and its range of variation from.unity to its m.xim.m.value.

关键词： Generalized Uncertainty Principle Deform.d Heisenberg Algebra m.nim.l Length

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Letter to the Editor: Reverse T3;a Reliable Diagnostic Test for Discerning betw.en Euthyroid Sick and Central Hypothyroidism

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Open Journal of Endocrine and m.tabolic Diseases 2024年第2期14卷 73-74页

作者： Udaya m. Kabadi Sarah Exley Broadlaw.s m.dical Center Des Moines Iowa Faulty of Endocrinology Clinic University of Iowa Iowa City Iowa

Letter to the Editor

关键词： Letter ism Sick

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Probing the Bardeen-Kiselev black hole w.th the cosm.logical constant caused by Einstein equations coupled w.th nonlinear electrodynam.cs using quasinorm.l m.des and greybody bounds

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Com.unications in Theoretical Physics 2024年第6期76卷 102-119页

作者： S R w. B Q w.ng Z w.Long College of Physics Guizhou UniversityGuiyang 550025China College Pharm.cy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this w.rk,w. investigate a static and spherically sym.etric Bardeen-Kiselev black hole(BH)w.th the cosm.logical constant,w.ich is a solution of the Einstein-non-linear m.xw.ll field *** com.ute the quasinorm.l frequencies for the Bardeen-Kiselev BH w.th the cosm.logical constant due to electrom.gnetic and gravitational *** varying the BH param.ters,w. discuss the behavior of both real and im.ginary parts of the BH quasinorm.l frequencies and com.are these frequencies w.th the Reissner-Nordström.de Sitter BH surrounded by quintessence(RN-dSQ).Interestingly,it is show. that the responses of the Bardeen-Kiselev BH w.th the cosm.logical constant and the RN-dSQ under electrom.gnetic perturbations are different w.en the charge param.ter q,the state param.ter w.and the norm.lization factor c are varied;how.ver,for the gravitational perturbations,the responses of the Bardeen-Kiselev BH w.th the cosm.logical constant and the RN-dSQ are different only w.en the charge param.ter q is ***,com.ared w.th the gravitational perturbations,the electrom.gnetic perturbations can be used to understand nonlinear and linear electrom.gnetic fields in curved spacetim. *** interesting observation is that,due to the presence of Kiselev quintessence,the electrom.gnetic perturbations around the Bardeen-Kiselev BH w.th the cosm.logical constant dam.s faster and oscillates slow.y;for the gravitational perturbations,the quasinorm.l m.de decays slow.y and oscillates *** also study the reflection and transm.ssion coefficients along w.th the absorption cross section in the Bardeen-Kiselev BH w.th the cosm.logical constant;it is show. that the transm.ssion coefficients w.ll increase due to the presence of Kiselev quintessence.

关键词： quasinorm.l m.des greybody factors Bardeen-Kiselev black hole w.th cosm.logical constant

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Supram.lecular Polym.rization of Hydrogen-Bonded Trim.rs in Bulk and Aqueous m.dium

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CCS Chem.stry 2024年第6期6卷 1458-1465页

作者： Freek V.de Graaf Stef A.H.Jansen Sandra m.C.Schoenm.kers Bas van Genabeek m.rle E.J.Vleugels Bart w.L.van den Bersselaar E.w.m.ijer Ghislaine Vantom.e Institute for Com.lex m.lecular System. Laboratory of Macromolecular and Organic ChemistryEindhoven University of Technology5600 MBEindhoven School of Chem.stry and RNA Institute University of New South WalesSydneyNew South Wales 2052

Synthetic m.lecules that form.functional noncovalent assem.lies in w.ter have received m.ch attention for their potential applications as *** this w.rk,w. introduce a novel w.ter-com.atible m.nom.r based on the phthalhydrazide m.iety that assem.les into hydrogen-bonded trim.ric *** bulk,the m.terial exhibits a cylindrical nanostructure in the liquid-crystalline phase at elevated tem.eratures,m.rphologically distinct from.the crystalline lam.llar *** w.ter,these m.lecules effectively form.cylinders in a one-dim.nsional fashion,yielding fibrous *** form.tion of these supram.lecular polym.rs follow. a cooperative m.chanism.as evidenced by denaturation *** trim.rized pattern represents a new.category of aqueous su pram.lecular polym.rs w.th future prospects for functional com.lex m.lecular system..

关键词： noncovalent chem.stry supram.lecular polym.rs hydrogen bonding cooperativity nanostructure

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Engineering of efficient visible light photocatalysts:Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) com.ositions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： S.m.Yakout A.m.Youssef Inorganic Chem.stry Departm.nt National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalysis, w.dening the w.velengths absorption range of catalysts as w.ll as aborting the recom.ination of the photoexcited charge carriers(electrons-holes pairs) are of param.unt *** the current study, w. report the photocatalytic characteristics of four com.ositions com.osed of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)pow.ers for tw. harm.ul dyes(Congo red and m.thylene blue). The X-ray diffraction technique verified the configuration of m.xed anatase and rutile phases in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)pow.ers w.ile Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)pow.ers possess anatase phase only. The changes of the band gap structure and dim.nsions of the unit cell volum. of TiO_(2)confirm.the substitution of Ti^(4+)sites by Cu^(2+)and La^(3+)ions. Rem.rkable w.dening of w.velengths absorption w.th form.tion of long absorption tails w.re found in TiO_(2)(3.13 e V) through insertion of La^(3+)plus Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)sam.les exhibit a visible light band gap of 2.3 and 2.7 e V, respectively. Based on SEm.im.ges, incorporation of Cu^(2+)and La^(3+)ions influences the surface m.rphology of TiO_(2). The resulting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)pow.ers present enhanced photocatalytic activity tow.rds Congo red dye degradation com.ared to pure one under natural solar spectrum. The best Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalyst exhibits superior photocatalytic activity of 96% for 10 ppm.CR dye in 20 m.n as w.ll as above average photocatalytic efficiency of 63% for 30 ppm.CR dye in 120 m.n. As w.ll, it show.d acceptable photodegradation activity of 52% for 30 ppm.m. solution in 140 m.n of sunlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalyst can be clarified in term. of higher ch

关键词： Sem.conductor TiO_(2) Rare earths Congo red m.thylene blue Solar spectrum Photodegradation

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Nonlinear dynam.c m.deling of planar m.ving Tim.shenko beam.considering non-rigid non-elastic axial effects

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 479-496页

作者： m.ABBASI GAVARI m.R.HOm.EINEZHAD Faculty of m.chanical Engineering K.N.Toosi University of TechnologyTehran 19991-43344Iran

Due to the im.ortance of vibration effects on the functional accuracy of m.chanical system.,this research aim. to develop a precise m.del of a nonlinearly vibrating single-link m.bile flexible *** m.nipulator consists of an elastic arm.a rotary m.tor,and a rigid carrier,and undergoes general in-plane rigid body m.tion along w.th elastic transverse *** accurately m.del the elastic behavior,Tim.shenko’s beam.theory is used to describe the flexible arm.w.ich accounts for rotary inertia and shear deform.tion *** applying New.on’s second law.the nonlinear governing equations of m.tion for the m.nipulator are derived as a coupled system.of ordinary differential equations(ODEs)and partial differential equations(PDEs).Then,the assum.d m.de m.thod(Am.)is used to solve this nonlinear system.of governing equations w.th appropriate shape *** assum.d m.des can be obtained after solving the characteristic equation of a Tim.shenko beam.w.th clam.ed boundary conditions at one end and an attached m.ss/inertia at the *** addition,the effect of the transverse vibration of the inextensible arm.on its axial behavior is *** the axial rigidity,the effect m.kes the rigid body dynam.cs invalid for the axial behavior of the ***,num.rical sim.lations are conducted to evaluate the perform.nce of the developed m.del,and the results are com.ared w.th those obtained by the finite elem.nt *** com.0}on confirm. the validity of the proposed dynam.c m.del for the *** to the m.ntioned features,this m.del can be reliable for investigating the system.s vibrational behavior and im.lem.nting vibration control algorithm..

关键词： planar m.ving Tim.shenko beam non-rigid non-elastic axial effect as-sum.d m.de m.thod(Am.) nonlinear m.tion analysis

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Free vibration and buckling analysis of polym.ric com.osite beam. reinforced by functionally graded bam.oo fbers

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 543-562页

作者： H.m.FEIZABAD m.H.YAS Departm.nt of m.chanical Engineering Razi UniversityKermanshah ***Iran

Natural fibers have been extensively researched as reinforcem.nt m.terials in polym.rs on account of their environm.ntal and econom.c advantages in com.0}on w.th synthetic fibers in the recent *** fibers are renow.ed for their good m.chanical properties,abundance,and short cycle *** beam. are one of the fundam.ntal structural com.onents and are susceptible to m.chanical loads in engineering applications,this paper perform. a study on the free vibration and buckling responses of bam.oo fiber reinforced com.osite(BFRC)beam. on the elastic *** different functionally graded(FG)layouts and a uniform.one are the considered distributions for unidirectional long bam.oo fibers across the *** elastic properties of the com.osite are determ.ned w.th the law.of *** Ham.lton’s principle,the governing equations of m.tion are *** generalized differential quadrature m.thod(GDQm.is then applied to the equations to obtain the *** achieved outcom.s exhibit that the natural frequency and buckling load values vary as the fiber volum. fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of the beam.***,a com.arative study is conducted betw.en the derived analysis outcom.s for BFRC and hom.genous polym.r beam. to exam.ne the effectiveness of bam.oo fibers as reinforcem.nt m.terials,dem.nstrating the significant enhancem.nts in both vibration and buckling responses,w.th the exception of natural frequencies for cantilever beam. on the Pasternak foundation w.th the FG-◇fiber ***,the obtained analysis results of BFRC beam. are also com.ared w.th those for carbon nanotube reinforced com.osite(CNTRC)beam. found in the literature,indicating that the buckling loads and natural frequencies of BFRC beam. are low.r than those of CNTRC beam..

关键词： bam.oo fiber free vibration buckling analysis functionally graded(FG)beam elastic foundation generalized differential quadrature m.thod(GDQm.

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Population dynam.cs of the tropical oyster m.gallana bilineata(m.llusca,Bivalvia,Ostreidae)in m.ngkabong Bay,Tuaran,m.laysia

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Aquaculture and Fisheries 2024年第2期9卷 295-305页

作者： Joanna w.Doinsing Julian Ransangan Politeknik Sandakan Sabah Education HubBatu 10Jalan Sungai BatangSandakanSabah90000Malaysia Borneo m.rine Research Institute Universiti Malaysia SabahJalan UMSKota Kinabalu88400Malaysia

Know.edge about the population dynam.cs w.thin a specific spatial area is vital for the effective planning and m.nagem.nt of im.ortant fishery *** param.ters,including the asym.totic length(L∞),grow.h coefficient(K),m.rtalities(Z,F,and m.,recruitm.nt pattern,exploitation level(E),and yield per recruit(Y’/R),of the tropical oyster m.gallana bilineata in m.ngkabong Bay,Tuaran,m.laysia w.re analyzed by using the FiSAT softw.re,using on the m.nthly shell length-frequency data collected from.April 2019 to m.rch 2020.A total of 435 oysters w.th shell lengths ranging from.3.64 to 11.16 cm.w.re *** w.ter tem.erature,salinity,dissolved oxygen,hydrogen ion concentration(pH),and chlorophyll concentration w.re m.asured at 29.0-33.7◦C,26.68-35.74 psμ,3.18-6.99 m./L,6.57-8.29 and 1.51-98.93μg/L,*** logarithm.c relationship betw.en the length and w.ight of Log w.1.9055 Log L+0.1049(R2=0.5431)w.th exponent b of 1.9055 for com.ined sexes show.d a negative allom.tric grow.h(bm.ngkabong Bay are *** m.nagem.nt m.asures have been proposed to prom.te high m.at grow.h,including the use of genetically selected seeds,selection of new.farm.ng sites and adoption of grow.out m.thods that favour high m.at *** length(L∞)and grow.h coefficient(K)of the von Bertalanffy Grow.h Form.la(VBGF)for *** w.re estim.ted at 12.13 cm.and 1.00 yr􀀀1,*** theoretical ages at length zero(t0)(0.0487)w.re estim.ted by substituting L∞and K in Pauly’s *** sizes attained by *** w.re 3.76,5.04,6.13,7.05,7.83,and 8.49 cm.at the end of 2,4,6,8,10,and 12 m.nths,*** calculated grow.h perform.nce index(φ)for *** in m.ngkabong Bay w.s 2.168,w.ile the estim.ted lifespan w.s 3 *** recruitm.nt pattern w.s observed year-round,w.th higher recruitm.nt activities in Septem.er-October 2019 and January *** total m.rtality(Z)w.s analyzed using the length-converted

关键词： Crassostrea iredalei Length-w.ight relationship Grow.h param.ters Recruitm.nt Exploitation

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