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tuning the particle size,physical properties,and photocatalytic activity of Ag_(3)PO_(4)materials by changing the Ag^(+)/PO_(4)^(3-)ratio

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Chinese Physics B 2023年第3期32卷 561-568页

作者： Hung N m oanh l t m Chung D P thang D V mai V t Hang l t minh N V Center for Nano Science and technology Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Department of Physics Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Hanoi University of mining and Geology Duc Thang WardNorth Tu Liem DistrictHanoi 100000Vietnam Institute of materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoi 100000Vietnam Faculty of Basic Sciences Hanoi University of Natural Resources and Environment41 A Phu Dien RoadNorth Tu LiemHanoi 100000Vietnam

this study demonstrates the influence of the Ag^(+)/PO_(4)^(3-)ratio in precursor solution on the crystal structural formation,morphology,physical properties,and photocatalytic performance of a Ag_(3)PO_(4)photocatalyst that is fabricated,using a facile precipitation method,from AgNO_(3)and Na2HPO_(4)·12H_(2)*** material characterizations were carried out using x-ray diffraction(XRD),scanning electron microscopy(SEm),energy-dispersive x-ray spectroscopy(EDX),Brunauer–Emmett–teller(BEt)surface area,Fourier transform infrared(FtIR)absorption,Raman scattering,x-ray photoelectron spectroscopy(XPS),UV-vis absorption,and photoluminescence(Pl).the results show that Ag_(3)PO_(4)crystallizes better when the excess PO_(4)^(3-)content increases,and the lattice parameters decrease slightly,while the crystal diameter and the particle size *** change is also observed in the Raman scattering and FtIR spectra with the increase in the vibration frequency of the[PO_(4)]*** compression of the[PO_(4)]unit was also confirmed in the XPS spectra with the shift of P 2p peaks toward higher binding *** photocatalytic results showed that the samples synthesized from excess PO_(4)^(3-)solution exhibited higher photocatalytic performance compared to the sample with a Ag^(+)/PO_(4)^(3-)ratio of 3:1.A sample prepared from the precursor solution with a Ag^(+)/PO_(4)^(3-)ratio of 3:1.5 was optimal for RhB decomposition under both visible light and natural sunlight,completely decomposing 10 ppm RhB after 15 minutes of xenon lamp irradiation and after 60 minutes under solar light *** is attributed to the high crystallinity,small particle size and low electron–hole recombination rate of the sample.

关键词： morphology photocatalytic Ag^(+)/PO_(4)^(3-)ratio visible light

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Getting physical with medical education:Exercise based virtual anatomy review classes for medical students

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World Journal of methodology 2025年第1期15卷 20-25页

作者： Nadeesha R Samarasinghe taniya S Nagpal michele l Barbeau Charys m martin Division of General Surgery Faculty of MedicineUniversity of British ColumbiaVancouver V6T 1Z3BCCanada Faculty of Kinesiology Sport and RecreationUniversity of AlbertaEdmonton T6G 2R3ABCanada Anatomy and Cell Biology University of Western OntarioLondon N6A 3K7ONCanada Department of Anatomy and Cell Biology Schulich School of Medicine and DentistryThe University of Western OntarioLondon N6A 3K7ONCanada

the benefits of regular physical activity are well ***,few studies have examined the effectiveness of integrating physical activity(PA)into curricula within a post-secondary *** investigate the incorporation of PA into medical curriculum,we developed a series of optional exercise-based review sessions designed to reinforce musculoskeletal(mSK)anatomy course *** synchronous sessions were co-taught by a group fitness instructor and an anatomy *** fitness instructor would lead students through both strength and yoga style exercises,while the anatomy instructor asked questions about relevant anatomical structures related to course material previously *** the sessions,participants were asked to evaluate the classes on their self-reported exam preparedness in improving mSK anatomy knowledge,PA levels,and mental *** participants completed surveys;a majority agreed that the classes increased understanding of mSK concepts(90.0%)and activity levels(97.7%).many(70.0%)felt that the classes helped reduce *** majority of respondents(90.0%)agreed that the classes contributed to increased feelings of social ***,medical students saw benefit in PA based interventions to supplement mSK course *** with increasing activity levels and promoting health behaviours,integrating PA into medical curriculum may improve comprehension of learning material,alleviate stress and foster social connectivity among medical students.

关键词： medical education musculoskeletal Anatomy Exercise Online learning

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the dynamic compensation temperature in a kinetic spin-5/2 Ising model on a hexagonal lattice

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Chinese Physics B 2013年第3期22卷 471-480页

作者： mt temizer Aysegl Ozkιlι Department of Physics Bozok University66200 YozgatTurkey Institute of Science Bozok University66200 YozgatTurkey

We present a study of the dynamic behavior of a two-sublattice spin-5/2 Ising model with bilinear and crystal-field interactions in the presence of a time-dependent oscillating external magnetic field on alternating layers of a hexagonal lattice by using the Glauber-type stochastic *** lattice is formed by alternate layers of spins σ=5/2 and S=5/*** employ the Glauber transition rates to construct the mean-field dynamic ***,we investigate the time variations of the average sublattice magnetizations to find the phases in the system and then the thermal behavior of the dynamic sublattice magnetizations to characterize the nature（first-or second-order） of the phase transitions and to obtain the dynamic phase transition（DPt） *** also study the thermal behavior of the dynamic total magnetization to find the dynamic compensation temperature and to determine the type of the dynamic compensation *** present the dynamic phase diagrams,including the dynamic compensation temperatures,in nine different *** phase diagrams contain seven different fundamental phases,thirteen different mixed phases,in which the binary and ternary combination of fundamental phases and the compensation temperature or the l-type behavior strongly depend on the interaction parameters.

关键词： kinetic Ising model dynamic phase transition dynamic compensation temperature

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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

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Cr（V）involvementin the toxicity pathway of testicular damage

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Asian Journal of Andrology 2002年第2期4卷 153-155页

作者： m.l.Pereira t.m.Santos 等 DepartmentofBiology Departmentofchemistry UniversityofAveriro3810－193AveiroPortugal

Aim: the functional integrity of the blood-testis barrier (BtB) in male mice exposed to Cr(V) was studied in order to clarify the mechanism underlying testicular injury. methods: Adult male mice were subcutaneously injected repeated doses of 8.02 mmol (0.5 ml) of Cr/*** for 5 days. Animals receiving a similar volume of bis(hydroxyethyl)-aminotris(hydroxymethyl)methane buffer (Bt) were used as controls. the animals were sacrificed on day 6 and small fragments of seminiferous tubules, approximately 8-10 mm length, were incised and sutured at both ends. they were exposed in vitro to horseradish peroxidase-containing culture medium for 10 minutes. tissues were then fixed and processed for ultrastructural studies. Results: Controls and Cr(V)-treated group resulted in the uptake of the tracer by Sertoli cells. However, the major finding consisted in the permeability of the BtB only in the Cr(V)-group, as evidenced by the presence of the tracer within the junctions between the neighbouring Sertoli cells. Conclusion: the BtB is disrupted in mice submitted to Cr(V). the permeability of the BtB is a crucial feature to be investigated for the understanding of lesions within the seminiferous tubule.

关键词： Blood-testis barrier Cr(V) Horseradish peroxidase Integrity Spermatogenesis

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li(2p←2s)+Na(3s)pressure broadening in the far-wing and line-core profiles

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Chinese Physics B 2022年第7期31卷 247-254页

作者： F talbi N lamoudi l Reggami m t Bouazza K Alioua m Bouledroua Physics Department Badji Mokhtar UniversityB.P.12Annaba 23000Algeria laboratoire de Physique des Rayonnements Badji Mokhtar UniversityB.P.12Annaba 23000Algeria laboratoire d’Etude des Surfaces et Interfaces de la matiere Solide(lESImS) Badji Mokhtar UniversityB.P.12 Annaba 23000Algeria laboratoire lAmA Laboratoire des Materiaux Avances(LAMA)Badji Mokhtar UniversityB.P.12 Annaba 23000Algeria laboratoire de Physique de la matiere et du Rayonnement lPmR Universite Cherif MessaidiaB.P.1553Souk-Ahras 41000Algeria

this work reports pressure-broadening line-wing and line-core of the lithium li(2p←2s)resonance line perturbed by ground sodium Na(3s)*** far-wing regions,the calculations are performed quantum-mechanically and are intended to examine the photoabsorption coefficients at diverse *** results show the existence of three satellites,in the blue wing near the wavelengths 470 nm and in the red wing around 862 nm and 1070 *** the line-core region,by adopting the simplified Baranger model,the line-width and line-shift rates are determined,and their variation law with temperature is *** published data were found to compare these results with.

关键词： pressure broadening line-core broadening far-wing spectra photoabsorption

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Precision livestock Farming: Precision feeding technologies and sustainable livestock production

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International Journal of Agricultural and Biological Engineering 2012年第4期5卷 54-61页

作者： t m Banhazi l Babinszky V Halas m tscharke National Centre for Engineering in Agriculture University of Southern QueenslandToowoombaQueensland4350 Australia Department of Feed and Food Biotechnology University of DebrecenH-4015 DebrecenHungary Department of Animal Nutrition Kaposvár UniversityH-7400 KaposvárHungary PlF Agritech Pty.ltd.Queensland 4350 Australia

In order to be able to produce safe,uniform,cheap,environmentally-and welfare-friendly food products and market these products in an increasingly complex international agricultural market,livestock producers must have access to timely production related *** the information related to feeding/nutritional issues is important,as feeding related costs are always significant part of variables costs for all types of livestock ***,automating the collection,analysis and use of production related information on livestock farms will be essential for improving livestock productivity in the ***-controlled livestock production systems with an information and communication technology(ICt)focus are required to ensure that information is collected in a cost effective and timely manner and readily acted upon on *** electronic and ICt related technologies introduced on farms as part of Precision livestock Farming(PlF)systems will facilitate livestock management methods that are more responsive to market *** PlF technologies encompass methods for electronically measuring the critical components of the production system that indicate the efficiency of resource use,interpreting the information captured and controlling processes to ensure optimum efficiency of both resource use and livestock *** envisaged real-time monitoring and control systems could dramatically improve production efficiency of livestock ***,further research and development is required,as some of the components of PlF systems are in different stages of *** addition,an overall strategy for the adoption and commercial exploitation of PlF systems needs to be developed in collaboration with private *** article outlines the potential role PlF can play in ensuring that the best possible management processes are implemented on farms to improve farm profitability,quality of products,welfare of livestock and

关键词： Precision livestock Farming(PlF) precision feeding control systems automation software-based technology sensors nutrition pig farm

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Enhanced Heat transfer with Full Circumferential Ribs in Helical Pipe

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Journal of thermal Science 2002年第3期11卷 241-248页

作者： S.W.Chang l.m.Su t.l.Yang Department of marine Engineering National Kaohsiung Institute of Marine Technology Kaohsiung Taiwan China Associate Professor Department of Electrical Engineering Tong Fang College of Technology and Commerce Taiwan China Associate Professor and Head of Department Department of Electrical Engineering Fortune Institute of Technology Taiwan China

this paper describes an experimental study of heat transfers in the smooth-walled and rib-roughened helical pipes with reference to the design of enhanced cooling passages in the cylinder head and liner of a marine propulsive diesel engine. the manner in which the repeated ribs modify the forced heat convection in the helical pipe is considered for the case where the flow is turbulent upon entering the coil but laminar in further downstream. A selection of experimental results illustrates the individual and interactive effects of Dean vortices and rib-flows on heat transfer along the inner and outer helixes of coils. the experimental-based observations reveal that the centrifugal force modifies the heat transfer in a manner to generate circumferential heat transfer variation with better cooling performance on the outer edge relative to its inner counterpart even with the agitated flow field caused by the repeated ribs. Heat transfer augmentation factor in the range of 1.3 ~ 3 times of the smooth-walled

关键词： helical pipe heat transfer enhancement.

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Stair and Step Soliton Solutions of the Integrable (2+1) and (3+1)-Dimensional Boiti-leon-manna-Pempinelli Equations

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Communications in theoretical Physics 2012年第12期58卷 785-794页

作者： m.t. Darvishi m. Najafi l. Kavitha m. Venkatesh Department of mathematics Razi University Department of Physiology Faculty of Medicine Kermanshah University of Medical Sciences Department of Physics Periyar University Center for Nanoscience and Nanotechnology Periyar University

the multiple exp-function method is a new approach to obtain multiple wave solutions of nonlinear partial differential equations (NlPDEs). By this method one can obtain multi-soliton solutions of NlPDEs. In this paper, using computer algebra systems, we apply the multiple exp-function method to construct the exact multiple wave solutions of a (2+1)-dimensional Boiti-leon-manna-Pempinelli equation. Also, we extend the equation to a (3+1)-dimensional case and obtain some exact solutions for the new equation by applying the multiple exp-function method. By these applications, we obtain single-wave, double-wave and multi-wave solutions for these equations.

关键词： multiple exp-function method Boiti-leon-manna-Pempinelli equation exact solution multi-soliton solution

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Effect of training on two-way Shape memory Effect and Its Stability in a ti-Ni-Hf High temperature Shape memory Alloy

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Journal of materials Science & technology 2003年第6期19卷 590-592页

作者： XianglongmENG WeiCAI K.t.lAU l.m.ZHOU lianchengZHAO SchoolofmaterialsScience&Engineering HarbinInstituteofTechnologyHarbin150001China DepartmentofmechanicalEngineering TheHongKongPolytechnicUniversityHungHomKowloonHongKongChina

the Effect of the thermal cycling training under constant strain on the two-way shape memory effect (tWSmE) in a ti36l\li49Hf15 high temperature shape memory alloy (SmA) has been investigated by bending tests. the results indicated that the training procedure is beneficial to get the better tWSmE. the two-way shape memory strain increases with increasing the training strain. And it decreases with increasing the training temperature. the tWSmE obtained in the present alloy shows poorer stability compared with that obtained in the tiNi alloys.

关键词： tiNiHf alloy High temperature shape memory alloy two-way shape memory effect training

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