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Immunohistochemical study on distribution of endocrine cells in gastrointestinal tract of flower fish (Pseudophoxinus antalyae)

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World Journal of Gastroenterology 2006年第42期12卷 6874-6878页

作者： Kenan lnar Nurgül ■enol m rü■tü zen Department of Biology Süleyman Demirel University Isparta 32260 Turkey

AIm： to detect distribution and relative frequency of endocrine cells in gastrointestinal tract of flower fish （Pseudophoxinus antalyae）. mEtHODS： the intestinal tract of flower fish was divided into four portions from proximal to distal; the enlarged area after oesophagus and anterior, middle and posterior intestine. Immunohistochemical method using the peroxidase anti-peroxidase complex was employed. All antisera between four portions of flower fish were compared using ANOVA. rESULtS： Eleven types of gut endocrine cells were determined; they were immunoreactive for calcitonin gene related peptide, substance P, vasoactive intestinal peptide, bombesin, somatostatin-14, secretin, trkA, trkB, trkC, neurotensin, neuropeptide Y, which were found in almost all portions of the gastrointestinal tract. CONCLUSION： the regional frequency of immunoreactive distribution and relative cells in the flower fish, Pseudophoxinus antalyae, are essentially similar to those of other fish.

关键词： Flower fish Gastrointestinal tract Immunoreactive cells Pseudophoxinus antalyae

Conceptual design of automobile engine rubber mounting composite using trIZ-morphological chart-analytic network process technique

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Defence technology（防务技术） 2018年第4期14卷 268-277页

作者： A.m.Noor Azammi S.m.Sapuan m.r.Ishak mohamed t.H.Sultan Department of mechanical and manufacturing Engineering University Putra Malaysia43400SerdangSelangorMalaysia Automotive Engineering technology Section UniKL-MFI43650B.B.BangiSelangorMalaysia Laboratory of Biocomposite technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia Department of Aerospace Engineering Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia

An engine rubber mounting is one of the important parts of a vehicle. It is a function to isolate or absorb and to reduce vibration to the vehicle body thus to the passenger itself. Due to the engine compartments environment such as heat and massive vibration due to road conditions, the engine rubber mountings lifespan has been reduced. thus several studies have been conducted to upgrade the material lifespan to make it more reliable and better engine mounting components. this paper presents the conceptual design of kenaf fiber polymer as automotive engine rubber mounting composites using the integration of theory of Inventive Problem Solving(trIZ). In this early stage, the solution is generated using 40 inventive principles and trIZ contradiction method. the solution parameter for the specific design character is the selected using the morphological chart to develop a systematic conceptual design for the component. Four(4) innovative design concepts were produced and Analytic Network Process(ANP)methods were utilized to perform the multi-criteria decision-making process of selecting the best concept design for the polymer composite engine rubber mounting component.

关键词： trIZ ANP morphological Automotive composites component Engine rubber composite mounting

Autoheated thermophilic aerobic sludge digestion and metal bioleaching in a two-stage reactor system

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Journal of Environmental Sciences 2010年第2期22卷 230-236页

作者： rohan Jain Ashish Pathak t.r.Sreekrishnan m.G.Dastidar Department of Biochemical Engineering & Biotechnology Indian Institute of technology Hauz KhasNew Delhi-110016India Centre for Energy Studies Indian Institute of TechnologyHauz KhasNew Delhi-110016India

A two-stage process has been developed for stabilization of sludge and removal of heavy metals from the secondary activated sludge with high rate of energy and time conservation. the first stage of the process involves autoheated thermophilic aerobic digestion at 55-60℃ inoculated with less-acidophilic thermophilic sulfur-oxidizing microorganisms （AtAD）. the results show that it is possible to maintain the autoheated conditions （55-60℃） in the AtAD reactor up to 24 hr, leading to reduction of 21% total solids （tS）, 27% volatile solids （VS）, 27% suspended solids （SS） and 33% volatile suspended solids （VSS） from the sludge. the sludge pH also decreased from 7 to 4.6 due to the activity of less-acidophilic thermophilic microorganisms. In the second stage operation, the digested sludge （pH 4.6, tS 31.6 g/L） from stage one was subjected to bioleaching in a continuous stirred tank reactor, operated at mean hydraulic retention times （Hrts） of 12, 24 and 36 hr at 30℃. An Hrt of 24 hr was found to be sufficient for removal of 70% Cu, 70% mn, 75% Ni, and 80% Zn from the sludge. In all, 39% VSS, 76% Cu, 78.2% mn, 79.5% Ni and 84.2% Zn were removed from the sludge in both the stages.

关键词： bioleaching thermophilic aerobic digestion heavy metals sludge

Effects of varying Alx moles on structure and luminescence properties of ZnAl_(x)O_(1.5x+1):0.1 mol%tb^(3+)nanophosphors prepared using citrate sol-gel method

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Journal of rare Earths 2023年第3期41卷 358-364,I0002页

作者： V.m.maphiri L.t.melato m.r.mhlongo t.t.Hlatshwayo t.E.motaung L.F.Koao S.V.motloung Department of Physics Sefako Makgatho Health Science UniversityP.O.Box 94Medunsa0204South Africa Department of mathematics Non Destructive Testing and PhysicsVaal University of TechnologyAndries Potgieter BlvdVanderbijlpark1900South Africa Department of Physics University of PretoriaPretoria0002South Africa Department of Chemistry School of Science in the College of Science Engineering and TechnologyUniversity of South AfricaPreller StreetMuckleneuk RidgeCity of TshwaneP.O Box 392UNISA 0003South Africa Department of Chemistry Sefako Makgatho Health Science UniversityP.O.Box 94Medunsa0204South Africa Department of Physics University of the Free State(Qwaqwa Campus)Private Bag X13Phuthaditjhaba 9866South Africa Department of Chemical and Physical Sciences Walter Sisulu UniversityMthathaSouth Africa

Un-doped and ZnAl_(x)O_(1.5x+1):0.1 mol%tb^(3+)(ZAOt)nano-powders were synthesized via citrate sol-gel *** AIx moles were varied in the range of 0.25≤x≤*** X-ray powder diffraction(XrD)data reveal that for xthe prepared samples crystal structure consists of mixed phases of the cubic ZnAl_(2)O_(4) and hexagonal ZnO phases,while for x>1.5 the structure consists of single phase of cubic ZnAl_(2)O_(4).the raman and Fourier-trans form infrared(FtIr)vibrational spectroscopy show the presence of vibrations emanating ZnAl_(2)O_(4) *** electron microscopy(SEm)and transmission electron microscopy(tEm)show the presence of irregular sphere at x>2.0 attributed to ZnAl_(2)O_(4).the photoluminescence(PL)spectroscopy reveals emissions from both the host and tb^(3+)*** from tb^(3+)are observed at 382,414,439,458 nm and 489,545,585,621 nm,which were attributed to the^(5)D_(3)→^(7)F_(6,5,4,2) and ^(5^)D_(4)→^(7)F_(6,5,4,3),*** results confirm that the tb^(3+)occupation site depends on the Alx *** International Commission on Illumination(CIE)colour chromaticity shows that the emission colour can be tuned from blue to green by varying the AIx moles.

关键词： Citrate sol-gel ZnAl_(2)O_(4)/ZnO tb^(3+)-doped Al_(x)moles Photoluminescence rare earths

regression analysis of squeezing-induced hybrid nanofluid flow in Darcy-Forchheimer porous medium

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 193-208页

作者： K.mUHAmmAD m.SArFrAZ Department of Humanities and Sciences School of Electrical Engineering and Computer Science National University of Sciences and Technology Department of mathematics Quaid-i-Azam University

this article presents a mathematical model addressing a scenario involving a hybrid nanofluid flow between two infinite parallel plates. One plate remains stationary, while the other moves downward at a squeezing velocity. the space between these plates contains a Darcy-Forchheimer porous medium. A mixture of water-based fluid with gold(Au) and silicon dioxide(Si O2) nanoparticles is formulated. In contrast to the conventional Fourier's heat flux equation, this study employs the Cattaneo-Christov heat flux equation. A uniform magnetic field is applied perpendicular to the flow direction, invoking magnetohydrodynamic(mHD) effects. Further, the model accounts for Joule heating, which is the heat generated when an electric current passes through the fluid. the problem is solved via NDSolve in mAtHEmAtICA. Numerical and statistical analyses are conducted to provide insights into the behavior of the nanomaterials between the parallel plates with respect to the flow, energy transport, and skin *** findings of this study have potential applications in enhancing cooling systems and optimizing thermal management strategies. It is observed that the squeezing motion generates additional pressure gradients within the fluid, which enhances the flow rate but reduces the frictional drag. Consequently, the fluid is pushed more vigorously between the plates, increasing the flow velocity. As the fluid experiences higher flow rates due to the increased squeezing effect, it spends less time in the region between the plates. the thermal relaxation, however, abruptly changes the temperature, leading to a decrease in the temperature fluctuations.

关键词： Nanofluidics

Investigation of the ^(121)Sb(α,γ)^(125)I reaction cross-section calculations at astrophysical energies

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Nuclear Science and techniques 2023年第11期34卷 85-92页

作者： m.Eroğlu C.Yalcın r.t.Güray Department of Physics Kocaeli UniversityUmuttepe41001 KocaeliTurkey Department of Electronics and Automation Piri Reis University34940 TuzlaIstanbulTurkey

Proton-rich nuclei are synthesized via photodisintegration and reverse *** examine this mechanism and reproduce the observed p-nucleus abundances,it is crucial to know the reaction rates and thereby the reaction cross sections of many *** that the number of experiments on the reactions in astrophysical energy regions is very rare,the reaction cross sections are determined by theoretical methods whose accuracy should be *** this study,given that ^(121)Sb is a stable seed isotope located in the region of medium-mass p-nuclei,we investigated the cross sections and reaction rates of the ^(121)Sb(α,γ)^(125)I reaction using the tALYS computer code with 432 different combinations of input parameters(OmP,LDm,and SFm).the optimal model combinations were determined using the threshold logic unit *** theoretical reaction cross-sectional results were compared with the experimental results reported in the *** reaction rates were determined using the two input parameter sets most compatible with the measurements,and they were compared with the reaction rate databases:StArLIB and rEACLIB.

关键词： Cross section Astrophysical S-factor Astrophysical reaction rate p-process nucleosynthesis threshold logic unit method

mg-ti hybrid joints:Surface modification,corrosion studies and 3D-pore investigation using synchrotron-based microtomography

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Journal of magnesium and Alloys 2024年第8期12卷 3142-3158页

作者： m.Fazel V.m.Garamus m.Serdechnova Fabian Wilde F.Wieland E.Nidadavolu t.Wu t.Ebel C.Blawert r.Willumeit-römer m.L.Zheludkevich Institute of metallic Biomaterials Helmholtz-Zentrum HereonGeesthacht 21502Germany Institute of Surface Science Helmholtz-Zentrum HereonGeesthacht 21502Germany Institute of materials Physics Helmholtz-Zentrum HereonGeesthacht 21502Germany Faculty of Engineering Institute of Materials ScienceKiel UniversityKaiserstraße 2Kiel 24143Germany

A new direction toward the future of orthopedic implants is to combine biodegradable mg alloys with permanent ti to produce selectively biodegradable hybrid joints for advanced tissue ***,the strong galvanic corrosion between mg and ti is a major issue to be *** work aims to explore plasma electrolytic oxidation(PEO)as a single-step coating treatment to allow for an acceptable degradation behavior of mgti hybrid *** this end,mgti hybrid joints were produced through the heat treatment of mg-0.6Ca and commercially pure ti specimens at 640°C for 8 h.A single-step PEO treatment was then employed to create a protective layer on the surface of hybrid *** though the scanning electron microscopy(SEm)images showed only a porosity of 6%and 12%within the PEO layers on single mg and mgti couples,3D investigation of the synchrotron-based microtomography data demonstrated a porosity of 18%and 30%with a considerable number of interconnected *** to the electrochemical impedance spectroscopy measurements,the impedance modulus at all frequencies on coated mgti coupled specimens was lower than that on the coated single mg-0.6Ca and pure ***,the application of PEO treatment significantly decreased the strong galvanic degradation of mg-0.6Ca in contact with *** results of hydrogen evolution tests revealed that PEO-treated mgti couples showed a similar degradation behavior as the single alloy during the first day of immersion.

关键词： mg-ti hybrid implants Plasma electrolytic oxidation Synchrotron microtomography Galvanic corrosion

Physical and damping properties of kenaf fibre filled natural rubber/thermoplastic polyurethane composites

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Defence technology（防务技术） 2020年第1期16卷 29-34页

作者： A.m.Noor Azammi S.m.Sapuan mohamad r.Ishak mohamed t.H.Sultan Advanced Engineering materials and Composite research Centre(AEmC) Department of Mechanical and Manufacturing EngineeringUniversity Putra Malaysia43400UPM SerdangSelangorMalaysia Automotive Engineering technology Section Universiti Kuala Lumpur Malaysian France Institute(UniKL-MFI)43650Bandar BaruBangiSelangorMalaysia Laboratory of Biocomposite technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia Department of Aerospace Engineering Universiti Putra Malaysia43400UPM SerdangSelangorMalaysia

the paper presents the investigation of the effect of alkaline treatment of sodium hydroxide(NaOH) on physical and dynamic mechanical analysis(DmA) viscoelastic properties of kenaf fibre filled natural rubber(Nr)/thermoplastic polyurethane(tPU) *** treated kenaf fiber,Nr and tPU were weighed and proportioned according to the required compositions and were blended using hot mixed Brabender *** polymer composites were then fabricated using the hot press to form a sample *** sample was cut and prepared and water absorption,density,thickness swelling and DmA tests were *** far as physical properties are concerned,composites with the highest Nr amount of shows the best results,which indicates good fiber bonding *** polymer composites with the highest amount of tPU shows the highest damping properties at high temperature.

关键词： Kenaf fiber Alkaline treatment thermoplastic polyurethane Natural rubber Dynamic mechanical analysis

Nonequilibrium behavior of the kinetic metamagnetic spin-5/2 Blume–Capel model

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Chinese Physics B 2014年第7期23卷 350-359页

作者： müt temizer Department of Physics Bozok University

the dynamic magnetic behavior of the kinetic metamagnetic spin-5/2 Blume-Capel model is examined, within a mean-field approach, under a time-dependent oscillating magnetic field. to describe the kinetics of the system, Glauber- type stochastic dynamics has been utilized. the mean-field dynamic equations of the model are obtained from the master equation. Firstly, these dynamic equations are solved to find the phases in the system. then, the dynamic phase transition temperatures are obtained by investigating the thermal behavior of dynamic sublattice magnetizations. moreover, from this investigation, the nature of the phase transitions （first- or second-order） is characterized. Finally, the dynamic phase diagrams are plotted in five different planes. It is found that the dynamic phase diagrams contain the paramagnetic （P）, antiferromagnetic （AF5/2, AF3/2, AF1/2） phases and five different mixed phases. the phase diagrams also display many dynamic critical points, such as tricritical point, triple point, quadruple point, double critical end point and separating point.

关键词： metamagnetism spin-5/2 Blume-Capel model dynamic phase transitions dynamic phase dia-grams Glauber-type stochastic dynamics