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Journal of Thermal Science 1992年第2期1卷 123-129页

作者： h.honda T.Fukuda InstituteofAdvancedMaterialStudy KyushyuUniversityKasugaFukuoka818Japan InstituteofAdvancedMateria

A theoretical study has been made to optimize the fin geometry of a horizontal finned tube which is to be used for condensers that handle the vapor load of a liquid phase change cooling *** numerical calcu- lations of the vapor to coolant heat transfer have been performed for parametric values of fin height,fin spacing, vertical bundle dep.h.and tubeside heat transfer *** dielectric fluids (R-113,FC-72,and FC-87) at atmospheric pressure were selected as the working *** a single tube with optimized fin geometry,the average heat flux increased in the order of FC-87,R-113 and *** the optimum fin height and optimum fin spacing increased with increasing vertical bundle dep.h.

关键词： finned condenser tube optimized fin geometry dielectric fluids physical model

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Increase in reproductive ability of high-producing cows, and qualitative parameters of their offspring, under conditions of intensive milk production

作者： (美)h.p. 洛夫克拉夫特

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Asian pacific Journal of Reproduction 2018年第4期7卷 167-171页

作者： Khamidulla B.Baimishev Murat h.Baimishev Vasily S.Grigoryev Alexander p.Kokhanov Inna V.Uskova Ismagil N.Khakimov Department of Anatomy Obstetricsand SurgerySamara State Agricultural Academy446442Ust-KinelskiiUchebnaya ulSamaraRussia Department of Epizootology Pathologyand PharmacologySamara State Agricultural Academy446442Ust-KinelskiiUchebnaya ulSamaraRussia Department of Animal Nutrition and husbandry Volgograd State Agricultural University400002Universitetskii ProspVolgogradRussia Department of Animal Nutrition and husbandry Samara Stage Agricultural Academy446442Ust-KinelskiiUchebnaya ulSamaraRussia

Objective: To study the methods of increasing the reproductive qualities and indices of viability in the offspring of holstein cows under conditions of intensive milk production. Methods: Studies were conducted on 3 groups of holstein cows with 30 heads in each group. Animals of the experimental groups had a different length physiological period. The study focused on experimental groups of animals: the reproductive indicators, the viability of newborn calves, and their growth rate. All the digital materials of the experimental data were processed by the method of variation statistics for the significance of the difference of the compared parameters using the Student's criterion, adopted in biology and zootechnics. Results: Studies found that reduction of the duration of the service period, along with a simultaneous increase in the inter-lactation period to 80–90 days, increased the reproductive capacity of the cows, and enhances the viability of the offspring compared with their peers. Conclusions: The study revealed the optimal duration of the physiological periods in high-producing cows under conditions of intensive milk production technology.

关键词： Correction Fertility Labor Viability

The Synoptic Climatology of Monthly Mean Surface Temperature in Asia in Relation to the 700 hpa Circulation

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Advances in Atmospheric Sciences 1989年第2期6卷 227-238页

作者： Runhua Yang William h.Klein Department of Meteorology University of Maryland College ParkMD 20742Department of MeteorologyUniversity of Maryland College ParkMD 20742

The synoptic climatology of monthly mean surface air temperature anomaly (MMATA) at 47 surface stations in Asia is assessed by two types of maps. The first consists of simple linear correlation coefficients between the MMATA at a station and the monthly mean 700 hpa height anomaly (MMhA) at 134 grid points in the Northern hemisphere. In winter, these fields generally contain two equally important centers: a center of maximum positive correlation approximately 1300 km from the reference station and a negative center about 2800 km to its northwest. In summer, the positive center is located an average of 800 km from the reference station and strongly dominates the MMATA, while the negative center is no longer as important as in winter. The second kind of map is a special type of anomaly composite, constructed by multiplying the correlation coefficient at each grid point by the standard deviation of MMhA at the same point. This map shows the optimum distribution of height anomalies for abnormally warm (or cold) weather for winter and summer in each of several climatologically similar regions into which Asia is subdivided.

关键词：天气气候学月平均地表温度大气环流亚洲

EFFECTS OF SOME Ca2+ BLOCKER ON RECEpTOR pOTENTIALS OF CRAYFISh RETINA

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Science China Chemistry 1986年第3期29卷 272-281页

作者：蔡浩然 h.STIEVE Institute of Biophysics KFA Institute of Neurobiology Beijing Jülich Academia Sinica W. Germany

One drug known to inactivate calmodulin and two others to block Cachannels were applied to isolated superfused retinae of the crayfish Astacus leptodactylus and their influence on the receptor potentials （Rp） was studied. Trifluoperazine causes an increase of the amplitude of maximum (h)of Rp and a prolongation of the time of half decrease （t）. Furthermore, trifluoperazine could antagonise the effect of raised calcium concentration of superfusate, which decreases hand shortens tof the Rp. Iproveratril and D-600 cause a transient increase and thereafter a progressive decrease of hof the Rp. There is a difference between effects of both drugs on tof the Rp. The mechanisms of effects of these drugs on the sensitivity of the isolated retina are discussed.

关键词： Rp BLOCKER ON RECEpTOR pOTENTIALS OF CRAYFISh RETINA

Simultaneous enhancement of mechanical and shape memory properties by heat-treatment homogenization of Ti_(2)Ni precipitates in TiNi shape memory alloy fabricated by selective laser melting

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Journal of Materials Science & Technology 2022年第6期101卷 205-216页

作者： h.Z.Lu L.h.Liu C.Yang X.Luo C.h.Song Z.Wang J.Wang Y.D.Su Y.F.Ding L.C.Zhang Y.Y.Li National Engineering Research Center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China Musculoskeletal Oncology Department Sun Yat-Sen University Cancer CenterGuangzhouGuangdong ProvinceChina Shenyang Aircraft Design and Research Institute Shenyang 110035China Guangdong huayi plumbing Fittings Industry Co. Ltd.Kaiping 529321China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia

The excellent shape memory and mechanical properties of Ti Ni shape memory alloys(SMAs) fabricated using selective laser melting(SLM) are highly desirable for a wide range of critical applications. In this study, we examined the simultaneous enhancement of mechanical and shape memory properties using heat-treatment homogenization of Ti_(2)Ni precipitates in a Ti_(50.6)Ni_(49.4)SMA fabricated using SLM. Specifically, because of the complete solution treatment, nanoscale spherical Ti_(2)Ni precipitates were homogeneously dispersed throughout the grain interior. Interestingly, the resultant SMA exhibited an ultrahigh tensile strength of 880 ± 13 Mpa, a large elongation of 22.4 ± 0.4%, and an excellent shape memory effect, with a recovery rate of > 98% and ultrahigh recoverable strain of 5.32% after ten loading–unloading cycles. These simultaneously enhanced properties are considerably superior than those of most previously reported Ti Ni SMAs fabricated using additive manufacturing. Fundamentally, the enhancement in tensile strength is ascribed to precipitation strengthening and work hardening, and the large plasticity is mainly attributed to the homogeneous nanoscale globular Ti_(2)Ni precipitates, which effectively impeded the rapid propagation of microcracks. Furthermore, the enhanced shape memory properties are derived from the suppression of dislocation movement and formation of retained stabilized martensite by the presence of high-density dislocations, nanoscale Ti_(2)Ni precipitates, and abundant interfaces. The obtained results provide insight into the enhancement of the two types of properties in Ti Ni SMAs and will accelerate the wider application of SMAs.

关键词： Shape memory alloy Selective laser melting heat treatment Mechanical properties Shape memory properties

Noise Like Ultra-Short Bound Solitons Train

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光学学报 2003年第S1期23卷 401-402页

作者： Y.D. Gong p. Shum D.Y. Tang T.h. Cheng C. Lu X.Q. Zhou Z.W. Qi Y.L. Guan W.S.Man h. Y. Tam Institute for Infocomm Research Innovation Center Block 2 18 Nanyang Drive Singapore 637723. Network Technology Research Center School of Electrical & Electronic Engineering Nangyang TechnologicalUniversity Singapore 639798 Department of Electrical Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong

Asymmetrical bound solitons train with pulsewidth of 103fs and separation of 585.5fs without any CW components are observed from Figure-8 passive mode locked fiber laser, the separation and pulsewidth keep unchanged e... 详细信息

关键词： Optical fiber lasers Optical fiber solitons Optical pulse generation

Three-Body Calculation of the 4he（ah,γ）7Li and 4he（ahe,γ）7Be Reactions and Structure of the 7Li and 7Be at Solar Energies

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Chinese physics Letters 2014年第1期31卷 56-60页

作者： h. Sadeghi h. Khalili Department of physics Faculty of Science Arak University Arak 8349-8-38156 Iran

The two 3h＋4he and 3he＋4he fusion reactions at low energies are usually viewed as an approximate external capture process. We study the 4he（3h,γ）rLi and 4he（She,γ）7Be reactions in a cluster model, which can take into account two- and three-body electromagnetic currents, using minimal substitution in the explicit momentum dependence of the two- and three-cluster interactions. Our main goal is to explore how the cross section of the low-energy 3h＋4he or 3he＋4he capture reactions depends on energy. The astrophysical S-factors for these reactions are calculated at very low energies. We construct the conserved realistic Argonne v18 for two nucleons and Urbana IX or Tucson-Melbourne three-cluster interactions, which are considered for calculation. We also calculate the binding energies and the structural properties of a hq-4he or 3he＋4 he systems. The binding energies are found to be -37.72 （-36.32） MeV and -39.35 （-37.43） MeV, with （without） three-body interactions for 7Be and 7 Li, in satisfactory agreement with other theoretical results and experimental data, respectively.

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What can a heavy U(1)B-L Z'boson do to the muon(g-2)u anomaly and to a new higgs boson mass?

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Chinese physics C 2021年第1期45卷 32-46页

作者： Antonio p.Morais Roman pasechnik J.pedro Rodrigues Departamenlo de Fisica da Universidade de Aveiro and CIDMA Campus de Santiago 3810-183 AveiroPortugal Department of Astronomy and Theoretical physics Lund UniversitySE 223-62 LundSweden Nuclear physics Institute ASCR 25068 RezCzech Republic Departamento de Fisica CFMUniversidade Federal de Santa CatarinaC.P.476CEP 88.040-900FlorianopolisSCBrazil

The minimal U(1)B_L extension of the Standard Model(B-L-SM)offers an explanation for neutrino mass generatio n via a seesaw mechanism;it also offers two new physics states,namely an extra higgs bos on and a new Z'gauge *** emerge nee of a second higgs particle as well as a new Z'gauge boson,both lin ked to the breaking of a local U(1)B_L symmetry,makes the B-L-SM rather constrained by direct searches in Large hadron Collider(LhC)*** investigate the phenomenological status of the B-L-SM by confr on ting the new physics predictions with the LhC and electroweak precision *** into account the current bounds from direct LhC searches,we demonstrate that the prediction for the muon(g-2)u anomaly in the B-L-SM yields at most a contribution of approximately 8.9×10^-12,which represents a tension of 3.28 standard deviations,with the current 1σuncertainty,by means of a Z'boson if its mass is in the range of 6.3 to 6.5 TeV,within the reach of future LhC *** means that the B-L-SM,with heavy yet allowed Z‘bos on mass range,in practice,does not resolve the tension between the observed anomaly in the muon(g-2)u and the theoretical prediction in the Standard *** a heavy Z'boson also implies that the minimal value for the new higgs mass is of the order of 400 GeV.

关键词： beyond Standard Model higgs physics gauge extensions of the Standard Model Z'boson

hemozoin triggers tumor necrosis factor alpha-mediated release of lysozyme by human adherent monocytes:new evidences on leukocyte degranulation in *** malaria

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Asian pacific Journal of Tropical Medicine 2009年第3期2卷 35-40页

作者： Mauro prato Giribaldi G Arese p Department of Genetics Biology and BiochemistryUniversity of Torino Medical SchoolTorinoItaly

Objective:Avidly phagocytosed hemozoin(malarial pigment) alters several functions of human monocytes and stimulates generation of several ***,we showed that phagocytosis of hemozoin by human monocytes increases expression and activity of matrix metalloproteinase-9,a proteolytic enzyme available in specific gelatinase granules,which contain several enzymes including *** work investigated active lysozyme release after phagocytosis of hemozoin and its dependence on production of tumor necrosis factor alpha. Methods:After phagocytosis of hemozoin,hemozoin-containing trophozoites or control meals(opsonized nonparasitized red blood cells and latex particles),monocyte supematants were monitored for 2 hours,in presence of blocking anti-human tumor necrosis factor alpha antibodies or recombinant human tumor necrosis factor alpha cytokine in selected *** release was evaluated by a specific spectrometric assay measuring lysozyme activity after coincubation of cell supematants with suspensions of Mycrococcus Lysodeikticus,while levels of soluble tumor necrosis factor alpha were analyzed by specific enzyme-linked immunodsorbent assay. Results:Levels of lysozyme activity and soluble tumor necrosis factor alpha protein were increased in hemozoin in-or trophozoites-laden monocytes *** per se(control meals) also increased lysozyme release,but levels were significantly lower than those obtained after phagocytosis of hemozoin or trophozoites. Interestingly,all effects on lysozyme release observed after phagocytosis were abrogated by blocking anti-human tumor necrosis factor alpha antibodies,while they were mimicked by recombinant human tumor necrosis factor alpha ***:present work shows that phagocytosis of hemozoin promotes monocyte degranulation and enhances active lysozyme *** effect requires tumor necrosis factor alpha mediation.

关键词： hemozoin plasmodium Falciparum Malaria Monocyte phagocytosis Tumor necrosis factor alpha Lysozyme Degranulation Gelatinase granules Matrix metalloproteinases