bluuebunny/crossref_metadata_2025_split huggingface dataset:
RE2+xI2M2+y (RE = Ce,Gd, Y; M = Al, Ga): Reduced Rare Earth Halides with a Hexagonal Metal Atom Network
Authors: Lukachuk Mar’yana , Zheng Chong , Mattausch Hansjürgen , Kremer Reinhard K. , Simon Arndt , Banks Michael G. 
Published: February 2015

Abstract
The title compounds were synthesized from RE, REI3 (RE = Ce, Gd, Y) and Al or Ga under an Ar atmosphere at 930 - 950 °C. The non-stoichiometric Ce2+xI2Al2+y and Ce2+xI2Ga2+y compounds crystallize in the space group R3̄m (No. 166) with lattice constants a = 4.3645(3), c = 35.914(2) Å for the Al and a = 4.3009(2), c = 35.680(4) Å for the Ga compound. Excess electron density found in the Wyckoff position 3a could be due to a fractional occupation by Ce or M (x = 0.06, y = 0 or x = 0, y = 0.11 in the case of the Ga compound). The stoichiometric Gd2I2Ga2 and Y2I2Ga2 compounds crystallize in the space group P3̄m1 (No. 164) with lattice constants a = 4.1964(1) and 4.1786(7) Å , c = 11.4753(4) and 11.434(2) Å , respectively. Their structures feature M-centered (M = Al, Ga) RE trigonal prisms condensed via common rectangular faces. The electronic origin of the surplus of metal atoms in the octahedral voids between the I-layers of the Ce compounds was explored via extended Hückel-type calculations. Magnetic susceptibility, electrical resistivity and heat capacity measurements have also been carried out. These reveal a metal-insulator transition of Gd2I2Ga2 at 40 K.
Structure and Properties of α- and β-CeCuSn: A Single Crystal and Mössbauer Spectroscopic Investigation
Authors: Sebastian C. Peter , Rayaprol Sudhindra , Hoffmann Rolf-Dieter , Rodewald Ute Ch. , Pape Tania , Pöttgen Rainer 
Published: February 2015

Abstract
Two modifications of CeCuSn were prepared from the elements: the high-temperature (β ) modification crystallizes directly from the quenched sample, while the low-temperature (α) modification is formed after annealing at 700 °C for one month. Both modifications were investigated by powder and single crystal X-ray diffraction. We find for β -CeCuSn the ZrBeSi-type structure, space group P63/mmc, a = 458.2(1), c = 793.7(2) pm, wR2 = 0.0727, 148 F2 values, 8 variable parameters. In the case of α-CeCuSn we find the NdPtSb-type structure, space group P63mc, a = 458.4(1), c = 785.8(2) pm, wR2 = 0.0764, 233 F2 values, 11 variable parameters. The copper and tin atoms build up layers of ordered [Cu3Sn3] hexagons. The layers are planar in β -CeCuSn, however, with highly anisotropic displacements of the copper and tin atoms. In α-CeCuSn a puckering effect is observed resulting in a decrease of the c lattice parameter. Both modifications of CeCuSn exhibit antiferromagnetic ordering, but there is a considerable difference in their magnetic behaviour. Anomalies in the physical properties of the α- and β -modifications of CeCuSn have been detected by Mössbauer spectroscopy and magnetic and specific heat measurements, which serve to explain the structure-property relations.
Das Koordinationsverhalten des Acetylendisulfids Bis(benzylthio)acetylen gegenüber nullwertigen Metallkomplexen des W, Co und Pt/The Coordination Behavior of the Acetylenedisulfide Bis(benzylthio)acetylene with Zero-valent Metal Complexes of W, Co and Pt
Authors: Seidel Wolfram W. , Meel Matthias J. , Lügger Thomas 
Published: February 2015

Abstract
Synthesis and characterization of the alkyne complexes [Co2(CO)6(L)], [W(CO)(L)3] and [Pt(PPh3)2(L)] with L = BnSC2SBn (Bn = benzyl) are described. X-Ray diffraction studies of [W(CO)(L)3] and [Co2(CO)5(L)]2 reveal that the donor ability of the sulfide group depends on the electronic and steric situation in the particular metal complex. The specific donor strength of sulfidesubstituted alkynes in their complexes is discussed considering the IR and NMR spectroscopic data.
Some New Nickel 1,2-Dichalcogenolene Complexes as Single-component Semiconductors
Authors: Papavassiliou George C. , Anyfantis George C. , Steele Barry R. , Steele Barry R. , Terzis Aris , Raptopoulou Catherine P. , Tatakis George , Chaidogiannos George , Glezos Nikos , Weng Yufeng , Yoshino Harukazu , Murata Keizo 
Published: February 2015

Abstract
The complexes Ni(dmeds)(dmit), Ni(dmedt)(dmit), Ni(dpedt)(dsit), Ni(dpedt)(dmit), and Ni(dcdt)(dmit) (where dmeds is dimethylethylenediselenolate, dmedt is dimethylethylenedithiolate, dpedt is diphenylethylenedithiolate, dcdt is 1,2-bis-decylsulfanyl-ethene-1,2-dithiolate, dmit is 1,3-dithiol-2-thione-4,5-dithiolate, and dsit is 1,3-dithiol-2-thione-4,5-diselenolate) were prepared and characterized. The new complexes exhibit semiconducting behavior, with band gap values around 0.8 eV.
Charge Density of L-Alanyl-glycyl-L-alanine Based on X-Ray Data Collection Periods from 4 to 130 Hours
Authors: Förster Diana , Wagner Armin , Hübschle Christian B. , Paulmann Carsten , Luger Peter 
Published: February 2015

Abstract
The charge density of the tripeptide L-alanyl-glycyl-L-alanine was determined from three X-ray data sets measured at different experimental setups and under different conditions. Two of the data sets were measured with synchrotron radiation (beamline F1 of Hasylab/DESY, Germany and beamline X10SA of SLS, Paul-Scherer-Institute, Switzerland) at temperatures around 100 K while a third data set was measured under home laboratory conditions (MoKα radiation) at a low temperature of 20 K. The multipole refinement strategy to derive the experimental charge density was the same in all cases, so that the obtained charge density properties could directly be compared. While the general analysis of the three data sets suggested a small preference for one of the synchrotron data sets (Hasylab F1), a comparison of topological and atomic properties gave in no case an indication for a preference of any of the three data sets. It follows that even the 4 h data set measured at the SLS performed equally well compared to the data sets of substantially longer exposure time.
Syntheses and Structures of 9-Bromo-10-diphenylphosphanylanthracene and its Oxidation Products
Authors: Schwab Gerald , Stern Daniel , Leusser Dirk , Stalke Dietmar 
Published: February 2015

Abstract
Treatment of 9,10-dibromoanthracene with one mole equivalent of n-butyllithium and chlorodiphenylphosphane yields 9-bromo-10-diphenylphosphanylanthracene (1). Oxidation of 1 with chalcogens leads to {Br(C14H8)(Ph2P=E)} with E = O (2), S (3) and Se (4). The syntheses and structure determinations of the parent compound 1 and the oxidized species 2 - 4 are reported.
Synthesis and Spectral Characterization of Hydrazone Schiff Bases Derived from 2,4-Dinitrophenylhydrazine. Crystal Structure of Salicylaldehyde-2,4-Dinitrophenylhydrazone
Authors: Monfared Hassan Hosseini , Pouralimardan Omid , Janiak Christoph 
Published: February 2015

Abstract
Reactions of 2,4-dinitrophenylhydrazine with salicylaldehyde, pyridine-2-carbaldehyde and 2- aminobenzophenone in methanol result in the hydrazone Schiff base ligands salicylaldehyde-, pyridine- 2-carbaldehyde-, and 2-aminobenzophenone-2,4-dinitrophenylhydrazone, respectively. Crystals of salicylaldehyde-2,4-dinitrophenylhydrazone are monoclinic, space group P21/c, a = 13.820(3), b = 4.3515(9), c = 25.159(7) Å , β = 123.01(2)° with Z = 4. The molecular packing is mostly a zigzag or herring-bone pattern.
A Convenient Procedure for the Preparation of Sulfonamidoureas Using Triphosgene
Authors: Safaei-Ghomi Javad , Bamoniri Abdolhamid , Abbaszadeh-Nooshabady Aboalfazl 
Published: February 2015

Abstract
An efficient method for the preparation of sulfonamidourea using triphosgene in organic solvents is reported.Sulfonylhydrazides and acetylsulfanilylhydrazide were transformed into the corresponding intermediates using triphosgene in 1,4-dioxane/water or tetrahydrofuran as solvents.These intermediates were converted in situ into symmetrical and unsymmetrical sulfonamidoureas in high yields and shorter periods of time related to previous methods.
Triterpenoid Saponins from Metadina trichotoma
Authors: Zhang Yu-Mei , Tan Ning-Hua , Huang Huo-Qiang , Zeng Guang-Zhi 
Published: February 2015

Abstract
Two new 27-nor-triterpene glycosides, pyrocincholic acid 3β -O-β -D-glucopyranosyl-(1→4)- β -D-quinovopyranosyl-28-O-β -D-glucopyranoside (Metatrichoside A, 1), pyrocincholic acid 3β -O-β -D-glucopyranosyl-(1→4)-β -D-quinovopyranosyl-28-O-β -D-glucopyranosyl-(1→6)-β -Dglucopyranoside (Metatrichoside B, 2), together with pyrocincholic acid 3β -O-β -D-quinovopyranosyl- 28-O-β -D-glucopyranoside (3), pyrocincholic acid 3β -O-β -D-quinovopyranosyl-28-O-β -Dglucopyranosyl-( 1→6)-β -D-glucopyranoside (4), quinovic acid 3β -O-β -D-quinovopyranoside (5), quinovic acid 3β -O-β -D-quinovopyranosyl-28-O-β -D-glucopyranoside (6), quinovic acid 3β -O- β -D-glucopyranoside (7) and quinovic acid 3β -O-β -D-glucopyranosyl-28-O-β -D-glucopyranoside (8) were isolated from the barks of Metadina trichotoma. Their structures were mainly determined by mass spectrometric and 1D and 2D NMR spectroscopic methods. Compound 5 and 6 showed cytotoxic activities towards the A549 non-small-cell lung cancer cell line (IC50 = 8.43 and 6.06 μm), and the methanol extract inhibited the activity of cathepsin B with an IC50 value of 0.77 μg mL−1.
Two New Iridoid Glycosides from Lagotis yunnanensis
Authors: Yang Xiao-Dong , Yang Li-Juan , Yang Shu , Zhao Jing-Feng , Zhang Hong-Bin , Li Liang 
Published: February 2015

Abstract
Two new iridoid glycosides, named lagotisoside D (1) and E (2), were isolated from Logatis yunnanensis. The structures of the two compounds were established as 6-O-α-L-(4″-O-E-3‴,4‴-dimethoxycinnamoyl) rhamnopyranosylcatalpol (1) and 6-O-α-L-(4″-O-Z-3‴,4‴-dimethoxycinnamoyl) rhamnopyranosylcatalpol (2) on the basis of spectral analysis.
Substitutionsreaktionen An Alkinkomplexen Des Nb(Iii) Und Mo(Ii) Mit Dem Liganden Bis(Benzylthio)Acetylen
Authors: Seidel Wolfram W. , Schaffrath Markus , Meel Matthias J. , Hamilton Tracy , Ariza Susana Castelar , Pape Tania 
Published: February 2015

Substitution reactions of the bis(benzylthio)acetylene complexes [Tp′Nb(BnSC2SBn)Cl2] and
[Tp′Mo(BnSC2SBn)(CO)2](PF6) (Tp′ = hydro-tris(3,5-dimethyl)pyrazolylborate, Bn = benzyl)
have been investigated. The coordination of the alkyne ligand turned out to be very stable,
while one chloride ion in [Tp′Nb(BnSC2SBn)Cl2], and either one or both of the CO ligands
in [Tp′Mo(BnSC2SBn)(CO)2](PF6) can be substituted. The dissociative mechanism of the reactions
with [Tp′Mo(BnSC2SBn)(CO)2](PF6) and [Tp′ Mo(BnSC2SBn)(CO)Cl] leads to the primary
and exclusive reaction with the solvent. In the course of these studies the structures
of [Tp′Nb(BnSC2SBn)Cl2], [Tp′Mo(BnSC2SBn)(CO)(MeCN)](PF6), [Tp′Mo(BnSC2SBn)(CO)Cl]
and [Tp′Mo(BnSC2SBn)Cl2][Tp′Mo(BnSC2SBn)ClF] have been determined by X-ray diffraction.
Comparison of the closely related compounds allows conclusions how the number of d electrons and
the character of the co-ligands influence the alkyne bonding
Single Crystal Investigation and Physical Properties of the Binary Compound CeB4
Authors: Babizhetskyy Volodymyr , Simon Arndt , Hiebl Kurt 
Published: February 2015

Abstract
The structure of CeB4 has been determined by single crystal X-ray diffraction. The compound crystallizes in the ThB4 structure type (space group P4/mbm, a = 7.2034(8), c = 4.1006(5) Å; 270 reflections with Fo ≥ 4σ (Fo), R1 = 0.023, wR2 = 0.052). The results of the magnetic and electrical resistivity measurements indicate a strong f-d hybridization of the 4 f electrons of the cerium atom
Magnetic Properties of Polycrystalline PrCu2: A Quadrupolar Transition Material
Authors: Fernández Jesús Rodríguez 
Published: February 2015

Abstract
Polycrystalline PrCu2, which has a quadrupolar transition at 7.7 K, has been investigated using electrical resistivity, magnetization and dilatometry techniques. To study dilution effects, two solid solutions of PrCu2, (Pr0.8La0.2)Cu2, and (Pr0.8Y0.2)Cu2, were also studied. The quadrupolar transition decreases in temperature with doping, while it increases slightly with the magnetic field. In resistivity and thermal expansion, the magnetic contributions show a clear evidence of crystal field excitations. The analysis of both properties provided benchmark values of the Debye temperature and Grüneisen parameters.
Solid State and Electronic Structure of Rare Earth Metal Intercalated Graphite from First-principles Theory
Authors: Fang Chang-Ming , Bauer Joseph , Saillard Jean-Yves , Halet Jean-Francois 
Published: February 2015

Abstract
The structural arrangements of the graphite intercalates LnC6 (Ln = La, Ce, Nd and Yb) were investigated using Density Functional Theory (DFT) within the Generalized Gradient Approximation (GGA). The EuC6-type structure (AαAβ AαAβ AαA stacking) is slightly energetically preferred for La and Ce, whereas with the other rare earth metals almost the same cohesive energies are found for the three different atomic arrangements AαAαAαAαAαA. . ., AαAβ AαAβ AαA. . ., and AαAβ AγAαAβ A. . . A rather important charge transfer occurs from the metals to the carbon sheets, with the electrons partially occupying the bottom of the carbon π* band. As a consequence, a lengthening of the C-C bond lengths of ca. 0.02 Å is computed with respect to the C-C bonds in graphite. Two-dimensional metallic character is expected for LaC6 according to its band structure.
Transparent Conductive Three-Layered Composite Films Based on Carbon Nanotubes with Improved Mechanical Stability
Authors: Schwarz Hans-Christoph , Schneider Andreas M. , Klimke Stephen , Anto Bibin T. , Eiden Stefanie , Behrens Peter 
Published: February 2015

ABSTRACTA layered composite coating material with favorable properties for application as a transparent conductor is presented. It is composed of layers of three nanoscopic materials, namely zinc oxide nanoparticles, single wall nanotubes, and graphene oxide nanosheets. The electrically conducting layer consists of single wall nanotubes (SWNTs). The layer of zinc oxide nanoparticles acts as a primer. It increases the adhesion and the stability of the films against mechanical stresses. The top layer of graphene oxide enhances the conductivity of such coatings. Such three-layer composite coatings show better conductivity (without compromising transparency) and improved mechanical stability compared to pure SWNT films. The processes used in the preparation of such coatings are easily scalable.
Copper Corrosion in Irradiated Environments. the Influence of H202 on the Electrochemistry of Copper Dissolution in Hcl Electrolyte
Authors: Smyrl W. H. , Bell R. T. , Atanasoski R. T. , Glass R. S. 
Published: February 2015

AbstractThe anodic dissolution of copper has been examined in deaerated, 0.1 M HCl aqueous solution in the presence of H202. Concentrations of H202 up to 0.2 M were studied at a rotating copper disk-platinum ring electrode. The open circuit potential (OCP) of copper was found to depend on both peroxide concentration and rotation rate. The OCP shifts towards more positive values with increasing H202 concentration (C) and decreasing rotation rate (ω). The dependence of OCP on (C/ω1/2) was the same s for oxygenated solutions reported earlier [1], at small values of (C/ω1/2). At higher values of (C/ω1/2), departure from the expected behavior was observed. The current- voltage curves for anodic dissolution of copper were also influenced by the presence of peroxide. The curves recorded with the potential scanned in the positive direction showed the expected 60 mV slope, but the reverse scans showed significant departures. At a given potential scan rate, hysteresis was observed which was larger for higher H202concentrations, lower rotation rates, and more positive anodic potential limits. Monitoring the cuprous ions at the outer Pt ring revealed that there was a complex set of events taking place at the copper surface, including film formation and the appear- ance of cupric ions.
Ab initioStudies of Electronic Structure of Defects in PbTe
Authors: Ahmad Salameh , Bilc Daniel , Mahanti S.D. , Kanatzidis M.G. 
Published: February 2015

AbstractAb initioelectronics structure calculations have been carried out in a series of RPb2n-1Te2n, n=16, compounds to understand the nature of “defect” states introduced by R where R = vacancy, monovalent Na, K, Rb, Cs, Ag atoms and divalent Cd atoms. We find that the density of states (DOS) near the top of the valence band and the bottom of the conduction band get significantly modified. The Na atom seems to perturb this region least (ideal acceptor in PbTe) and the other monovalent atoms enhance the DOS near the top of the valence band. Cd is an interesting case, since it introduces a strong resonance state near the bottom of the conduction band.
O LIXO, O ESGOTO NA BAÍA DE GUANABARA E OS PROGRAMAS DE DESPOLUIÇÃO: A MÍDIA VERSUS OS DADOS
Authors: Gabriel Rodrigues Souza Luis , Carlos de Miranda Antonio , Bastos de Medeiros Herika 
Published: February 2015

A Baía de Guanabara, no Rio de Janeiro, palco do descaso das autoridades governamentais, que anos após anos criam planos de despoluição, que não se concretizam. Este artigo traz à tona a discussão desse impacto ambiental e os efeitos dos poluentes ao meio ambiente. Ao mesmo tempo em que os dados de contaminação eram divulgados, os governos, em contrapartida, apresentam na mídia planos para o futuro que não são cumpridos. Nesse sentido se faz imprescindível uma gestão ambiental comprometida com a sociedade, visando investimentos que realmente consigam apresentar retorno de melhoria de qualidade das águas da Baía. PALAVRAS-CHAVE: poluição das águas por bactérias coliformes, micro-organismos e resíduos sólidos. GARBAGE, THE SEWAGE IN GUANABARA BAY AND REMEDIATION PROGRAMS: THE VERSUS MEDIA DATA. ABSTRACT The problem is that the Guanabara Bay, in Rio de Janeiro who year after year create plans and new plans remediation, who do not materialize. As a result of this environmental impact of polluting effects are disastrous for the environment. At the same time, in which the current data of contamination are disclosed the governments on the other hand present in media plans for the future, which are not accomplished. In this sense it is essential a society committed to environmental management aimed at investments that actually unable to submit feedback to improve water quality of the Bay. KEY-WORDS: water pollution by coliform bacteria, micro-organisms and solid waste. BASURA, EL ALCANTARILLADO EN BAHÍA DE GUANABARA Y LOS PROGRAMAS DE RECUPERACIÓN: EL VERSUS LOS MEDIOS DE DATOS. RESUMEN Bahía da Guanabara, en Rio de Janeiro, en este artículo se plantea la discusión sobre el impacto ambiental y los efectos de los contaminantes en el medio ambiente. Al mismo tiempo, los datos fueron a conocer la contaminación, los gobiernos sin embargos, apresentam em el planes de medio para el futuro que no se cumplen. Por más d cien años la Bahia de Guanabara está mostrando signos de degradación. En este sentido, es esencial una gestión ambiental comprometida con la sociedad dirigindo a las inversiones que en realidad apresentar retorno y mejorar la calidad del agua de la bahía. PALABRAS-CLAVE: contaminación del agua por bacterias coliformes, microorganismos y residuos sólidos
AVALIAÇÃO DAS MUDANÇAS NA PAISAGEM DA BACIA HIDROGRÁFICA DO LAJEADINHO EM CAMPO GRANDE-MS, POR MEIO DE ANÁLISE MULTITEMPORAL
Authors: Leite Lima Felipe , Henrique Soares da Silva Mauro 
Published: February 2015

Este trabalho teve como objetivo identificar as mudanças na paisagem da Bacia Hidrográfica do Lajeadinho de modo a avaliar a eficácia do processo de instituição da APA dos Mananciais do Lajeado. Especificamente, realizou-se a análise do uso e ocupação do solo, além da identificação, descrição e mapeamento da evolução da paisagem, de modo a compreender se a criação da APA preveniu ou ajudou a prevenir a degradação da área. Por meio do uso de técnicas de processamento digital de imagens foram elaborados os mapas temáticos de 1994 e 2014. O uso de Sistemas de Informações Geográficas (SIG’s) permitiu observar os impactos ambientais devido ao mau uso das terras. PALAVRAS-CHAVE: Unidade de Conservação. Geoprocessamento. Uso e Ocupação do Solo. EVALUATION OF CHANGES IN THE LANDSCAPE OF LAJEADINHO WATERSHED IN CAMPO GRANDE-MS THROUGH MULTITEMPORAL ANALYSIS ABSTRACT This work had as goal to identify the changes in the landscape of Lajeadinho watershed to evaluate the efficiency of the institutional process of APA in the fountainhead of Lajeado. It was exactly achieved the analysis of the use and soil occupation, beyond the identification, description and mapping of the landscape evolution to understand if APA creation prevented or it helped to prevent the devastation of the area. Through the use of digital techniques processing of images, thematic maps were made from 1994 to 2014. The use of Geographic Information System (SIG’S) allowed to watch the environmental impacts due to the bad use of the lands. KEYWORDS: Unit Of Conservation. Geo-Processing. Use And Soil Occupation. EVALUACIÓN DE LOS CAMBIOS EN EL PAISAJE DE LA CUENCA HIDROGRÁFICA DE LAJEADINHO EN CAMPO GRANDE-MS, A TRAVÉS DE ANÁLISIS MULTITEMPORALES RESUMEN El objetivo de este trabajo fue identificar Los cambios en el paisaje de la cuenca hidrográfica de Lajeadinho con el fin de evaluar la eficacia del proceso de institución de la APA de los Manantiales de Lajeado. Específicamente, se realizó el análisis del uso y ocupación del suelo, además de la identificación, descripción y mapeo de la evolución del paisaje, a modo de comprender sí la creación del APA previno o ayudó a prevenir la degradación del área. Por medio de técnicas de procesamiento digital de imágenes fueron elaborados mapas temáticos de 1994 y 2014. El uso de Sistemas de Informaciones Geográficas (SIG’s) posibilitó evidenciar los impactos ambientales derivados del mal uso de tierras. PALABRAS CLAVE: Unidades de Conservación. Geoprocesamiento. Uso y Ocupación del Suelo.
FATORES ECOLÓGICOS E O CULTIVO DA NOGUEIRA-MACADÂMIA
Authors: José Perdoná Marcos , Takayuki Nakayama Fernando , Luiz Abranches Jorge 
Published: February 2015

Fatores ecológicos podem ser a causa de baixas produtividades no cultivo da nogueira-macadâmia no estado de São Paulo. Esse estudo teve como objetivo compilar informações sobre a ecofisiologia dessa nogueira, identificar os gargalos para sua expansão no estado e fornecer alternativas na busca por melhores produtividades. Entre os assuntos abordados estão: condições climáticas do centro de origem da planta, suas características morfológicas, fenologia, interações ambientais, localidades com aptidão ao cultivo, cultivo consorciado e uso de irrigação. PALAVRAS-CHAVE: Macadamia integrifolia (L.), viabilidade, ecofisiologia. ECOLOGICAL FACTORS AND THE MACADAMIA CROPPING SYSTEM ABSTRACT Ecological factors may be the cause of low productivity in the cultivation of macadamia in state of São Paulo. This study aimed to gather information on the ecophysiology of this walnut, identify the difficulties for its expansion in the state and provide offer alternatives that provide better yields. Among the topics discussed are: climatic conditions of the center of origin of the plant, its morphological characteristics, phenology, environmental interactions, locations with suitability for cultivation, intercropping and irrigation. KEY-WORDS: Macadamia integrifolia (L.), viability, ecophysiology. FACTORES ECOLÓGICOS Y CULTIVO DE NUEZ-MACADAMIA RESUMEN Factores ecológicos pueden ser la causa de la baja productividad en el cultivo de nueces de macadamia en el estado de São Paulo. Este estudio tuvo como objetivo recopilar información sobre la ecología fisiológica de este nogal, identificar cuellos de botella para su expansión en el estado y ofrecer alternativas en la búsqueda de una mejor productividad. Entre los temas tratados se encuentran: las condiciones climáticas del centro de origen vegetal, sus características morfológicas, fenología, interacciones ambientales, localidades con el cultivo de la aptitud, el cultivo intercalado y el uso de riego. PALABRAS-CLAVE: Macadamia integrifolia (L.), la viabilidad, la ecofisiología.