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Communications in Theoretical Physics 2017年第5期67卷 577-589页

作者：姜素蓉刘中强他玛·阿摩司·依侬孔祥木 Department of Physics Qufu Normal University Qufu 273165 China kibbutz Kalia Doar Na Kikar Jordan 90666 Israel

A new approach for exploring effects of interfaces on polar liquids is presented. Their impact on the polar liquid film motor(PLFM) – a novel micro-fluidic device – is studied. We account for the interface's impact by modeling slip boundary effects on the PLFM's electro-hydro-dynamical rotations. Our analytical results show as k = l_s/R increases(with ls denoting the slip length resulting from the interface's impact on the film's properties, k >-1 and R denoting the film's radius):(a) PLFMs subsequently exhibit rotation characteristics under "negative-", "no-", "partial-" and"perfect-" slip boundary conditions;(b) The maximum value of the linear velocity of the steady rotating film increases linearly and its location approaches the film's border;(c) The decay of the angular velocities' dependency on the distance from the center of the film slows down, resulting in a macroscopic flow near the boundary. With our calculated rotation speed distributions consistent with the existing experimental ones, research aiming at fitting computed to measured distributions promises identifying the factors affecting ls, e.g., solid-fluid potential interactions and surface *** consistency also is advantageous for optimizing PLFM's applications as micro-washers, centrifuges, mixers in the lab-on-a-chip.

关键词： liquid film elecrohydrodynamical motions boundary condition rotation

The Yellow Spot Pattern of Salamander (Salamandra infraimmaculata) in Various Habitats at the Southern Border of Its Distribution in Israel

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Open Journal of Animal Sciences 2023年第1期13卷 114-125页

作者： Gad Degani Gad Ish Am Amit Biran Ish Am Neria Yatom Amir Marshansky Sivan Margalit Eitan Nissim Hava Goldstein Niva Shaked MIGAL—Galilee Research Institute Kiryat Shmona Israel Faculty of Science and Technology Tel-Hai Academic College Kiryat Shmona Israel kibbutz sasa Upper Galilee Israel kibbutz Yehiam Galil Maaravi Israel Israel Nature and Parks Authority Jerusalem Israel

The present study describes the different color-pattern phenotypes of yellow spots on the black back of Salamandra infraimmaculata in various habitats at the southern border of its distribution in Israel. At Tel Dan, we photographed 454 salamanders in moist habitats where water flows year round;100 of these were sampled to measure the percentage of yellow and black color on the back, and the number of spots on the head. At kibbutz sasa, 201 salamanders were photographed, of which 62 were sampled for the measurements. In kibbutz Yehiam, 200 salamanders were photographed, and 60 were sampled for the measurements. At all sites, about a third of the salamanders were photographed more than once. For all three populations, yellow spots on the salamander back were found in one row, two rows or scattered. For two indices (proportion of yellow/black and number of spots on the head), the Dan population (under wet, running water all year round conditions) differed from the two other populations of salamanders (under semi-arid mountain conditions). The number of yellow spots on the head of the salamanders in the three populations varied from 1 to 7. In all populations, 4 spots pattern was the most common. In the Dan population, there were significantly more salamanders with 1 to 3 spots on their head than in the sasa or Yehiam populations. No difference was found in the number of head spots for sasa vs. Yehiam salamanders. The percentage of yellow on the black back was significantly larger for the Dan salamanders vs. the two other populations. The main question examined was whether there is an effect of the habitat conditions in isolated populations on the spot pattern on the salamander back. The answer is positive and is supported by previous studies.

关键词： Salamandra infraimmaculata Color-Pattern Habitats Spots Yellow

Sex-Based Variation of Gene Expression in the Gonads and Fins of Russian Sturgeon (<i>Acipenser gueldenstaedtii</i>)

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Open Journal of Animal Sciences 2021年第1期11卷 1-10页

作者： Gad Degani Akram Hajouj Avshalom Hurvitz MIGAL-Galilee Research Institute Kiryat Shmona Israel Tel-Hai Academic College Upper Galilee Israel Israel kibbutz Dan Fishery Kibbutz Dan Israel

Russian sturgeon (Acipenser gueldenstaedtii) is a primitive freshwater fish and a source of black caviar. The genes involved in sexual determination and differentiation are still unknown and there are no molecular markers for sex identification in this species. Studying the variation of the sex-based differences in genomic sequences and in gene expression in the sturgeon may lead to markers of sex in early stages of development and advances in aquaculture, as well as provide novel insights about the evolution of reproduction, sex determination, and sexual differentiation mechanisms in vertebrates. Previous studies by our and other groups have identified differentially expressed genes in the gonads of adult female and male sturgeon. The current study aimed to test whether these genes were also differentially expressed in non-gonadal tissue, namely fins. We measured by qRT-PCR the mRNA levels of 29 known and novel sex-related genes in the gonads and fins of males (4 years old) and females (7 years old;sexual maturation is earlier in males than in females). Six genes (ATP6, IGFRM, LIA1A, S1A, NPL1A, GAPDH and SOX9) showed higher expression in female fins. However, only ATP6 mRNA levels differed in fins of males and females of the same age (4 years old). These findings underscore the impracticality of sex identification based on gene expression in non-gonadal tissue and the need for genetic sex markers in the Russian sturgeon.

关键词： Acipenser Gene Expression Sexual Maturation Gonads Sex Markers

Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2481-2490页

作者： Marija R.Miladinovic Ivan J.Stojkovic Ana V.Velickovic Olivera S.Stamenkovic Ivana B.Bankovic-Ilic Vlada B.Veljkovic University of Nis Faculty of TechnologyBulevar osloboaenja 124Leskovac 16000Serbia University of Belgrade Faculty of Technology and MetallurgyKarnegijeva 4Belgrade 11000Serbia Serbian Academy of Sciences and Arts(sasa) Knez Mihailova 35Belgrade 11000Serbia

Continuous biodiesel production from a waste pig-roasting lard,methanol and KOH was carried out in a reciprocating plate reactor(RPR)using a factorial design containing three process factors,namely methanol/lard molar ratio,catalyst loading,and normalized height of the *** main goals were to optimize the influential process factors with respect to biodiesel purity using the response surface methodology and to model the kinetics of the transesterification reaction in order to describe the change of triacylglycerols(TAG)and fatty acid methyl esters(FAME)concentrations along the RPR *** first-order rate law was proved for both the reaction and the mass *** model of the changing reaction mechanism and mass transfer of TAG was also *** kinetic models agreed with the experimental concentrations of TAG and FAME determined along the RPR height.

关键词： Biodiesel Kinetics Optimization Reciprocating plate reactor Waste lard

Effect of heat treatment on structure and magnetic properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk amorphous alloy

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China Foundry 2017年第1期14卷 59-63页

作者： Bratislav Cukic Nebojsa Mitrovic Aleksa Maricic Technical College of Vocational Studies 32 000 CacakSerbia Joint Laboratory for Advanced Materials of sasa Section for Amorphous SystemsFaculty of Technical Sciences CacakUniversity of Kragujevae32 000 CacakSerbia

Abstract： This study deals with the Fe65.5Cr4Mo4Ga4P12C5B5.5 ferromagnetic bulk amorphous alloy. XRD analysis showed an amorphous structure of the as-cast sample. The same method revealed that, after annealing at 973 K for v=10 min, the sample displayed a crystalline structure with crystalline phases formed. The crystallization process of the alloy was examined by DTA analysis. It was shown that crystallization took place in the temperature range between 810 K and 860 K with the exo-maximum peak temperature at 846 K with a heating rate of 20 ***-1. The method also showed that, at temperatures ranging from 753 K to 810 K, the alloy exhibited the properties of supercooled liquids. A correlation between heat-induced structural changes and magnetic properties of the alloy was determined by thermomagnetic measurements. Maximum magnetization M=3.7 ***-1 of the alloy was reached after its annealing at 733 K for τ=10 min. Upon annealing, the alloy exhibited a relaxed amorphous structure. Annealing the alloy above the crystallization temperature led to a decrease in bulk magnetization. After annealing at 973 K for r=10 min, the bulk magnetization of the alloy was M＇=0.45 ***-1. Accordingly, after crystallization and formation of new compounds, the magnetization of the alloy was decreased by a factor of about 7.7. The strength of the magnetic field applied during the measurements was H=10 kA.m-1. The samples were tested for changes in the microstructure and hardness of both the amorphous phase and the resulting crystalline phase.

关键词： bulk metallic glass X-ray diffraction analysis differential thermal analysis thermomagneticproperties magnetization hardness microstructure

The Makings of an Icon： Analysis of Photograph of Israeli Soldiers

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Journalism and Mass Communication 2015年第6期5卷 298-308页

作者： Edna Barromi Perlman University of Haifa Haifa Israel kibbutz College of Education Technology and Arts Tel Aviv Israel

This study analyses an iconic photograph of Israeli paratroopers, photographed in Jerusalem in 1967. It explores how visual and formal structural components in the image function in this photograph and how they contribute to the process of creating an icon. It explores the mechanisms that exist in visual icons and addresses the question of why some press photographs turn into iconic images while other do not, and if there is a connection between the visual structural elements in the images and the way they are perceived by the public. The study discusses how this visual logic correlates with other elements such as public opinion and myths.

关键词： Photographs icons symbols Israel soldiers myths Zionism

回收仅仅是可持续发展的开始——PET纤维案例

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国际纺织导报 2010年第2期38卷 12-12,14页

作者： Z.Fahrioglu 喻长远 Advansa sasa聚酯公司

可持续发展被认为是持续的经济发展、改善的社会公平和环境质量方面进步的、平衡的成就。可持续发展包括社会、环境和经济3个组成部分,只有这3部分同时都得到满足的情况下才能实现可持续发展的目的。

关键词：回收 PET纤维 “纤维到纤维”工艺

Multi-phase(Zr,Ti,Cr)B_(2) solid solutions:Preparation,multi-scale microstructure,and local properties

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Journal of Advanced Ceramics 2023年第2期12卷 414-431页

作者： Laura SILVESTRONI Nicola GILLI Alex SANGIORGI Alessandro COROZZI Suzana FILIPOVIĆ Nina OBRADOVIĆ Laia ORTIZ-MEMBRADO Emilio JIMÉNEZ-PIQUÉ William G.FAHRENHOLTZ CNR-ISSMC Institute of ScienceTechnology and Sustainability for Ceramics(former ISTEC)Via Granarolo 6448018 FaenzaItaly CNR-IMM Institute for Microelectronics and MicrosystemsVia Gobetti 10140129 BolognaItaly Institute of Technical Sciences of sasa Knez Mihailova 35/IV11000 BelgradeSerbia Department of Materials Science and Engineering EEBEUniv.Politècnica de Catalunya-BarcelonaTECH.Avda.Eduard Maristany 1608019 BarcelonaSpain Department of Materials Science and Engineering Missouri University of Science and TechnologyRollaMO 65049USA

Multi-phase ceramics based on ZrB_(2),TiB_(2) and doped with CrB_(2) and SiC were prepared by powder metallurgy and hot pressing to explore the possibility of obtaining multi-scale microstructures by super-saturation of complex(Zr,Ti,Cr)B_(2) solid ***-shell structures formed in TiB_(2) grains,whereas ZrB_(2) appeared to form a homogeneous solid solution with the other *** of nano-inclusions within both micron-sized borides was assessed by transmission electron microscopy and thermodynamics elucidated the preferential formation of boride inclusions due to the specific sintering *** addition,atomic size factors explicated the precipitation of CrB_(2) nano-particles into ZrB_(2)-rich grains and of ZrB_(2) nano-particles into TiB_(2)-rich *** hardness of the constituent phases measured by nanoindentation ranged from 36 to 43 GPa.

关键词： boride core-shell solid solution nanoindentation sintering

Unexpectedly low δ^(13)C in leaves,branches,stems and roots of three acacia species growing in hyper-arid environments

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Journal of Plant Ecology 2021年第1期14卷 117-131页

作者： Daphna Uni Elli Groner Elaine Soloway Amgad Hjazin Spencer Johnswick Gidon Winters Efrat Sheffer Ido Rog Yael Wagner Tamir Klein Department of Plant and Environmental Sciences Weizmann Institute of ScienceRehovotIsrael The Dead Sea-Arava Science Center Tamar Regional CouncilNeve Zohar 86910Israel Institute of Plant Sciences and Genetic in Agriculture The Robert H.Smith Faculty of AgricultureFood and EnvironmentThe Hebrew University of JerusalemRehovotIsrael Arava Institute for Environmental Studies Kibbutz KeturaIsrael

Aims In plant eco-physiology,less negative(enriched)carbon 13(^(13)C)in the leaves indicates conditions of reducing leaf gas exchange through stomata,*** *** addition,^(13)C is expected to be less negative in non-photosynthetic tissues as compared with ***,these relationships inδ^(13)C from leaves(photosynthetic organs)to branches,stems and roots(non-photosynthetic organs)are rarely tested across multiple closely related tree species,multiple compartments,or in trees growing under extreme heat and *** We measured leaf-to-root^(13)C in three closely related desert acacia species(Acacia tortilis,*** and ***).We measuredδ^(13)C in leaf tissues from mature trees in southern *** parallel,a 7-year irrigation experiment with 0.5,1.0 or 4.0 L day1 was conducted in an experimental *** the end of the experiment,growth parameters andδ^(13)C were measured in leaves,branches,stems and *** Findings Theδ^(13)C in leaf tissues sampled from mature trees was ca.-27‰,far more depleted than expected from a desert tree growing in one of the Earth's driest and hottest *** acacia species and compartments,δ^(13)C was not enriched at all irrigation levels(-28‰to ca.-27‰),confirming our measurements in the mature *** compartments,leafδ^(13)C was unexpectedly similar to branch and rootδ^(13)C,and surprisingly,even less negative than stemδ^(13)*** highly depleted leafδ^(13)C suggests that these trees have high stomatai gas exchange,despite growing in extremely dry *** lack ofδ^(13)C enrichment in nonphotosynthetic tissues might be related to the seasonal coupling of growth of leaves and heterotrophic tissues.

关键词： stable isotope δ^(13)C enrichment desert tree drought resistance Acacia raddiana Acacia tortilis

Natural isothiocyanates of the genus Capparis as potential agonists of apoptosis and antitumor drugs

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World Journal of Pharmacology 2023年第4期12卷 35-52页

作者： Lumír Hanuš Tuvia Naor Tatyana Gloriozova Valery M Dembitsky Institute for Drug Research School of PharmacyFaculty of MedicineHebrew UniversityEin Kerem CampusJerusalem 91120Israel Food Chemistry KibbutzYotvata 8882000Israel Department of Bioinformatics Institute of Biomedical ChemistryMoscow 119121Russia Centre for Applied Research and Innovation Lethbridge CollegeLethbridge AB T1K 1L6Canada

BACKGROUND Using gas chromatography-mass spectrometry(GC/MS)analysis,we examined the composition of volatile components present in the yellow and green fruits,seeds,and jam of the scrambling shrub Capparis cartilaginea(***).These plant samples were collected from kibbutz Yotvata in *** all the tested samples,isothiocyanates were *** the PASS program,we ascertained the biological activity of these isothiocyanates present in the Capparis *** study results highlighted that all isothiocyanates could potentially act as apoptosis agonists,making them strong candidates for antitumor *** information holds significant value for the fields of medicinal chemistry,pharmacology,and practical *** To investigate the volatile components present in the yellow and green fruits,seeds,and jam of the *** shrub using GC/MS analysis,to detect isothiocyanates in all the analyzed plant samples,and to assess the biological activity of these isothiocyanates utilizing the PASS *** We utilized two primary methods to analyze the volatile compounds present in the yellow and green fruits,seeds,and jams of the ***,native to *** identified biologically active isothiocyanates in these *** anticipated biological activities were determined using the PASS program,with the most dominant activities being apoptosis agonist,anticarcinogenic,and antineoplastic specifically for genitourinary *** Fruits,seeds,and jams containing isothiocyanates,which exhibit antineoplastic and anticarcinogenic activities,could be suggested for cancer prevention and *** isothiocyanates,with therapeutic potential in this realm,could be recommended as potent anticancer agents in practical medicine following clinical *** The discovery that isothiocyanates exhibit potent antineoplastic and anticarcinogenic activities was ***,certain isothiocyanates demonstrated antifu

关键词： Capparis cartilaginea Fruits Seeds Isothiocyanates Apoptosis Anticancer