bluuebunny/crossref_metadata_2025_split huggingface dataset:
Número completo (Enero-abril)
Authors: León-González PhD. Jorge Luis 
Published: February 2024

Editorial
PhD. Yanary Emelina Carvallo-Monsalve

Leadership in Cuban construction companies
Francisca María Ramírez-Rodríguez, Dayamí Danyelis Gelabert-Veliz, Enaidy Reynosa-Navarro

Enfoque de marca a través de la Sociedad de las Singularidades de Reckwitz
Alex Bustos-Romero, María José Pérez-Espinoza, Adriana Plata-García

Reimagining entrepreneurship in the digital age
Emanuel Ferreira-Leite, Javier Solano-Solano, Gloria Ramírez-Elías

Breve revisión de la literatura del comercio electrónico y sus implicaciones económicas en el Ecuador
Adriana Santamaría-Mendoza, Carolina Uzcátegui-Sánchez, Paola Vélez-Yaguana

Mystery Shopping, revelando a magia da Compra Misteriosa
Ioanna Dimitrakaki, Jean Palomeque-Jaramillo, Izabele Sousa-Barros

Clima organizacional en empresas: conceptualización y variables para su evaluación.
José Javier Del Toro-Prada, Fernando Teófilo Fernández-Rodríguez, Reol Zayas-Batista

Actions to strengthen logistics in Cuban companies
Carlos Verdecia-Barbié, Yamilka Pino-Sera, Ana de Lourdes Torralbas-Blazquez

Efeitos macroeconômicos do e-commerce na América Latina
Francisco Zagari-Forte, Karen Serrano-Orellana, Karla Tenesaca-Serrano
La catégorisation homme-femme en athlétisme à l’heure des droits humains des minorités sexuées et genrées1
Authors: Mascarenhas Elena , Moron-Puech Benjamin 
Published: February 2024

Au prisme des droits humains européens, les autaires analysent les catégories sportives de « sexe » à travers la règlementation d’athlétisme de World Athletics et de l’affaire Caster Semenya. Les règlements les prévoyant sont-ils discriminatoires (article 14 CEDH)? Conduisent-ils à des actes de torture et à d’autres traitements inhumains et dégradants (article 3)? Violent-ils la vie privée (article 8)? Comment inclure les personnes intersexuées, transgenres, notamment non binaires, dans les compétitions internationales?
Après avoir montré que la bicatégorisation telle qu’elle est imposée par le règlement de World Athletics est contraire aux droits humains, les autaires envisagent des modifications et des alternatives inspirées d’autres espaces sportifs.
La laïcité aux urgences : les obligations religieuses dans le quotidien hospitalier
Authors: Lavoie Bertrand 
Published: February 2024

L’objectif de cet article est de présenter des réponses concrètes offertes par des soignants aux manifestations d’obligations religieuses exprimées par des patients dans une salle d’urgence. Il y existe ce que l’on peut nommer une « harmonisation pratique » du pluralisme religieux, en ce sens que les soignants semblent prêts à accommoder un nombre important d’obligations religieuses, ayant pour principales limites des contraintes pratiques, telles que les ressources matérielles, temporelles et humaines disponibles. Bien qu’il puisse exister des oppositions de valeurs aux demandes liées aux obligations religieuses, les fins de non-recevoir ne sont pas usuelles. Le présent article repose sur une étude ethnographique de deux années, commencée à l’automne 2018 et terminée à l’automne 2020, réalisée en collaboration avec les équipes soignantes de quatre salles d’urgence à Montréal et en Estrie, et réunissant un total de 50 participants.
سمفونی تراوش سرد
Authors: لوسلبن لیزا کاترین , کلریچی مونیکا , هولم ویلادز , پانیری جولیانا , آب نیکی محمد , همتی نژاد فرشته 
Published: February 2024

تمرکز: برای گوش دادن به صداهای اقیانوس منجمد شمالی و یادگیری در مورد تنوع زیستی اقیانوس منجمد شمالی، به ویژه در نزدیکی تراوشات سرد. ما با ایجاد عبارات صوتی جدید با الهام از اقیانوس آزمایش هایی انجام خواهیم داد. برای دانش‌آموزان مبتلا به اختلال شنوایی، دانش آموز‌ها می‌توانند بیانی بدنی از این موضوع ایجاد کنند و یا از وسایلی استفاده کنند که با آن راحت هستند.

اهداف آموزشی: با این فعالیت، دانش آموزان شروع به درک موارد زیر خواهند کرد:
- انبوهی از صداهای قابل شنیدن در اقیانوس و نزدیک به تراوش سرد در بستر دریا.
- اینکه اقیانوس ها، از جمله اقیانوس منجمد شمالی، دارای تنوع زیستی زیادی هستند.
- کشتی اقیانوس شناسی چیست و صداهای انسانی مرتبط با آن.

کلیدواژه: تحقیق اقیانوس، اکتشاف، رابطه انسانی یا غیر انسانی در اقیانوس، صداها، مکان، سر و صدا.
زیست نگار کف اقیانوس
Authors: ماریچ فیلیپ , پوتو مارگریتا پائولا , زیمرمن هایکه جین , پانیری جولیانا , آب نیکی محمد , همتی نژاد فرشته 
Published: February 2024

تمرکز
برای تثبیت یادگیری دانش آموزان در مورد کف اقیانوس به روشی خلاقانه و سرگرم کننده. از طریق ایجاد یک زیست نگار، دانش آموزان به این فکر می کنند که کف اقیانوس چگونه به نظر می رسد و چه گونه هایی در آنجا زندگی می کنند.

اهداف یادگیری
در این فعالیت، دانش‌آموزان طراحی، طبقه‌بندی و مکانی برای همه عناصر و شخصیت‌هایی که کف اقیانوس و تنوع زیستی را تشکیل می‌دهند پیدا می‌کنند
تأثیر انسان: ردپای اکولوژیکی
Authors: ماریچ فیلیپ , پوتو مارگریتا پائولا , پانیری جولیانا , آب نیکی محمد , همتی نژاد فرشته 
Published: February 2024

تمرکز
درک معنای ردپای اکولوژیکی انسان. دانش‌آموزان به سؤالاتی فکر می‌کنند مانند اینکه اعمال ما (به عنوان مثال، تحقیق) چگونه بر محیط اطراف ما تأثیر می‌گذارد و برای کاهش تأثیر انسان بر اقیانوس‌ها چه کاری می‌توانیم انجام دهیم؟

اهداف آموزشی
در این فعالیت، دانش‌آموزان یاد می‌گیرند که درک درستی از رابطه خود با اقیانوس‌ها و محیط ‌زیست دریایی ایجاد کنند و امیدواریم برای تبدیل دانش خود به عمل الهام بگیرند.

کلیدواژه
تأثیر انسانی، رد پا، عمل.
Flux tubes, surface magnetism, and the solar dynamo: constraints and open problems
Authors: Schüssler M. 
Published: March 2005

AbstractThe flux‐tube paradigm has proven to be a remarkably useful tool to understand the connection between the dynamo process in the solar interior and its observable manifestations at the surface. After a brief review of the justification of this approach and of its successes, we discuss in some detail its loose ends and the remaining open questions – and attempt to provide some tentative answers. This includes the origin of fields much stronger than the dynamical equipartition value, the structure of the stored magnetic flux (flux tubes versus a magnetic layer) and the importance of convective pumping, as well as processes connected with flux emergence and the subsequent development of the magnetic flux. It is argued that the observations of the surface field indicate a dynamical disconnection of the emerged flux from its roots in the deep convection zone. Based on the ‘explosion’ of magnetic flux tubes, a scenario and an illustrative model for the disconnection process are suggested. In the last part of the paper, the significance of observed properties of the surface magnetism for constraining solar dynamo models a critically discussed. It is shown that some properties of the butterfly diagram do neither confirm nor refute specific dynamo models. Furthermore, the observed phase relationship between the average toroidal and poloidal magnetic field components is shown to result from the tilt angle of bipolar magnetic regions, so that it imposes no constraint for models of the deep‐seated solar dynamo. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Quiet sun magnetic fields vs. polar faculae – local vs. global dynamo?
Authors: Okunev O. V. , Domínguez Cerdeña I. , Puschmann K. G. , Kneer F. , Sánchez Almeida J. 
Published: March 2005

AbstractQuiet Sun magnetic fields in the internetwork are almost ubiquitous. Simultaneous observations in infra‐red and visible lines and high spatial resolution (<0.5″) data in visible lines show that their field strengths range from below few hundred Gauss to kilo‐Gauss. Most of the flux is contained in small‐scale, strong‐field features located mainly in intergranular lanes. The average unsigned flux density exceeds 20 Gauss. The new detections are confirmed by recent quiet Sun observations in the G band. The generation of the strong fields in the internetwork, which may be due to a local dynamo, poses a challenging problem. – Polar faculae (PFe) are small‐scale magnetic features at the polar caps of the Sun. They take part in the solar cycle and are thus likely to be rooted deeply in the solar interior. They are the result of the global dynamo at the solar poles. PFe also possess kilo‐Gauss magnetic fields which have the same polarity as the global magnetic field. The rôle of quiet Sun magnetic field structures and of PFe for the dynamics of the corona and for the solar wind are addressed. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Cellular dynamo in a rotating spherical shell
Authors: Getling A. V. , Simitev R. D. , Busse F. H. 
Published: March 2005

AbstractMagnetoconvection in a rotating spherical shell is simulated numerically using a code developed by Tilgner and Busse. The thermal stratification is convectively unstable in the outer part and stable in the inner part of the shell. Regimes are found in which the convective flow is weakly affected by rotation and preserves its cellular structure. The dipolar component of the large‐scale magnetic field exhibits undamped oscillations. It appears that convection cells slightly modified by rotation can be building blocks of the global dynamo. The generation of the magnetic field is thus due to regular “macroscopic” flows, and their structure itself may ensure the presence of the α effect responsible for the action of the dynamo. Such dynamos can be called deterministic, in contrast to those in which the maintenance of the magnetic field is related to the statistical predominance of a certain sign of helicity in the turbulent velocity field. Investigation of conditions under which dynamos of this sort can operate could suggest a more definite answer to the question of the origin of solar and stellar magnetic fields. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Stellar activity cycles: observing the dynamo?
Authors: Strassmeier K. G. 
Published: March 2005

AbstractThe enormous complexity of the atmospheric structure observed on the Sun makes it very difficult to compare the Sun with “solar‐type stars”. Clearly, we need to identify parameters that can be observed on the Sun as well as on other stars which can be interpreted unambiguously. The most widely accepted dynamo signature is the presence of an activity cycle, well documented for the Sun and for main‐sequence stars due to the Mount Wilson Ca II H&K project. Only recently have we detected spatial information, differential rotation and possibly meridional flows on other stars and thereby adding another constraint for its interpretation within a dynamo theory. Again, the picture is not complete yet, despite that there is just a single main ingredient that acts as the driving mechanism for activity in all atmospheric layers and the convective envelope of a solar‐type star: the dynamo‐related magnetic field. I stress the importance of mapping stellar surfaces as fingerprints of the underlying dynamo action over long periods of time. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Line formation in turbulent magnetic atmospheres
Authors: Carroll T. A. , Staude J. 
Published: March 2005

AbstractWe present a stochastic formulation of the polarized radiative transfer in an atmosphere permeated by a random magnetic field. On the basis of a Markov process we describe the line formation as a stochastic process which allows us to account for a finite correlation length of the fluctuating structures. The resulting stochastic master equation describes the evolution of the expectation value of the Stokes vector (the macroscopic observable) through the atmosphere. As the correlation length (mean structural length scale of the fluctuating or turbulent elements) appears explicitly in the stochastic transport equation it can be used as a diagnostic parameter from which an estimation of the underlying structural length scale is possible. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
What did William Hunter know about bone?
Authors: McDonald Stuart W. , Russell David 
Published: March 2005

AbstractThis article examines William Hunter's specimens on bone in the Anatomy Museum at the University of Glasgow. By referring to students' notes taken at Hunter's lectures and to the Manuscript Catalogue of his anatomical specimens, we attempt to answer the question, “What did William Hunter know about bone?” Hunter seems to have been particularly interested in the relationship between vascularisation and ossification and many of the specimens illustrate this. He provided his students with reasoned arguments on a number of issues: that the marrow serves as a fat store and not to produce synovial fluid or to keep bones supple; the periosteum serves as an attachment for tendons and ligaments; the rationale for the presence of epiphyses is not readily defined; that bones form by intramembranous and endochondral ossification and that, in the latter, cartilage is replaced by bone. William Hunter narrowly failed to realise that in long bones new bone is laid down by the periosteum and at the epiphysial plates, and is remodeled. These discoveries were to be made by his brother, John. Clin. Anat. 18:155–163, 2005. © 2005 Wiley‐Liss, Inc.
Homochiral Oligopeptides Generated by Induced “Mirror Symmetry Breaking” Lattice‐Controlled Polymerizations in Racemic Crystals of Phenylalanine N‐Carboxyanhydride
Authors: Nery Jose Geraldo , Bolbach Gerard , Weissbuch Isabelle , Lahav Meir 
Published: March 2005

AbstractThe formation of diastereoisomeric libraries of oligopeptides through the heterogeneous polymerization of racemic crystals of phenylalanine N‐carboxyanhydride (PheNCA) is reported. The diastereoisomeric compositions of the oligopeptides formed on polymerization of (R,S) crystals incorporating the deuterium‐tagged S enantiomer were determined by MALDI‐TOF mass spectrometry. The racemic mixtures of the oligopeptides longer than pentamers are represented primarily by diastereoisomers of homochiral sequence and with peptides containing only one heterochiral repeating unit. A mechanism comprising the following three sequential steps to account for this unusual observation is proposed: 1) formation of dimers and trimers at a partially damaged liquid/solid interface, 2) chain propagation that takes place within the bulk of the crystal through a lattice‐controlled “zipper‐like” mechanism between homochiral molecules arranged in a head‐to‐tail motif to yield crystalline antiparallel β‐sheets of alternating oligopeptide chains of homochiral sequence of opposite handedness, and 3) enantiomeric cross‐inhibition that results in chain termination. Induced desymmetrization of the racemic mixtures of the formed peptides was achieved by the polymerization of the mixed quasi‐racemic crystals of (R)‐PheNCA, ((S)‐PheNCA), and (S)‐ThieNCA (3‐(2‐thienyl)‐alanine N‐carboxyanhydride) of various compositions. These experiments resulted in the formation of nonracemic libraries of oligopeptides composed of homochiral chains of (R)‐Phe and copolymers of randomly distributed (S)‐Phe and (S)‐Thie sequences. From these findings, we propose a stochastic model for the generation of libraries of nonracemic mixtures of oligopeptides from the polymerization of host (R,S)‐PheNCA with racemic mixtures of other guest NCA amino acids dissolved in limited quantities in the crystal.
Three‐Dimensional Organization of Helices: Design Principles for Nucleobase‐Functionalized β‐Peptides
Authors: Chakraborty Pradip , Diederichsen Ulf 
Published: March 2005

AbstractThe construction and molecular recognition of various three‐dimensional biomimetic structures is based on the predictable de novo design of artificial molecules. In this regard β‐peptides are especially interesting, since stable secondary structures are obtained already with short sequences; one of them is the 14‐helix in which every third residue has the same orientation. The covalent functionalization of every third 14‐helix side chain with nucleobases was used for a reversible organization of two helices based on nucleobase pairing. A series of β‐peptides with various nucleobase sequences was synthesized and the stability of double strand formation was investigated. As few as four nucleobases are sufficient for considerable duplex stability. The stability of base pairing was examined by temperature‐dependent UV spectroscopy and the formation of the 14‐helix was confirmed by circular dichroism (CD) spectroscopy. The preferred strand orientation of complementary‐nucleobase‐modified β‐peptide helices was investigated as well as the influence of helix content on the duplex stability. The preorganization of a 14‐helix in regard to double‐strand recognition was tuned by the sequential order of polar β‐amino acids or by the amount of 2‐aminocyclohexanecarboxylic acid units incorporated, which are known to facilitate 14‐helix formation, respectively.
Structural Diversity of Low‐Dimensional Compounds in [M(en)2]2+/ [Re6Q8(CN)6]4‐ Systems (M: Mn, Ni, Cu).
Authors: Brylev Konstantin A. , Pilet Guillaume , Naumov Nikolai G. , Perrin Andre , Fedorov Vladimir E. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Molecular Complex 3‐Methyl‐2,4‐dinitrothiophene 1,1‐Dioxide—Pyridine in Reactions with Amines.
Authors: Efremova I. E. , Lapshina L. V. , Berkova G. A. , Berestovitskaya V. M. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of α‐Hydrazino Ketones via Regio‐ and Stereoselective Electrophilic Amination of Manganese Enolates and Enamines.
Authors: Dessole Gabriella , Bernardi Luca , Bonini Bianca F. , Capito Elena , Fochi Mariafrancesca , Herrera Raquel P. , Ricci Alfredo , Cahiez Gerard 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Pharmacological Evaluation of Some DL‐Dichlorophenyl Alcohol Amides Anticonvulsants.
Authors: Meza‐Toledo Sergio E. , Olea‐Gomez Arturo , Mora‐Ramirez Erika Y. , Peralta‐Cruz Javier , Nogueron‐Chirinos Jaisel B. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Stereoconservative Negishi Arylation and Alkynylation as an Efficient Approach to Enantiopure 2,2′‐Diarylated 1,1′‐Binaphthyls.
Authors: Krascsenicsova Katarina , Walla Peter , Kasak Peter , Uray Georg , Kappe C. Oliver , Putala Martin 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Catalytic Cyclization of o‐Alkynylbenzaldehyde Acetals and Thioacetals. Unprecedented Activation of the Platinum Catalyst of Olefins. Scope and Mechanism of the Reaction.
Authors: Nakamura Itaru , Bajracharya Gan B. , Wu Huanyou , Oishi Kengo , Mizushima Yuya , Gridnev Ilya D. , Yamamoto Yoshinori 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Organoaluminum‐Mediated Selective 1,2‐Rearrangement of γ,γ‐Disubstituted γ‐Amino α,β‐Unsaturated Carbonyl Compounds Leading to Unsymmetrically Substituted Pyrroles.
Authors: Ooi Takashi , Ohmatsu Kohsuke , Ishii Hiroki , Saito Akira , Maruoka Keiji 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis and Antitrypanosomal Profile of New Functionalized 1,3,4‐Thiadiazole‐2‐arylhydrazone Derivatives, Designed as Non‐mutagenic Megazol Analogues.
Authors: Carvalho Samir A. , da Silva Edson F. , Santa‐Rita Ricardo M. , de Castro Solange L. , Fraga Carlos A. M. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of 8‐Thiabicyclo[3.2.1]oct‐2‐enes and Their Binding Affinity for the Dopamine and Serotonin Transporters.
Authors: Meltzer Peter C. , Pham‐Huu Duy‐Phong , Madras Bertha K. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Identification of a Novel Non‐Carbohydrate Molecule that Binds to the Ribosomal A‐Site RNA.
Authors: Maddaford Shawn P. , Motamed Mina , Turner Kevin B. , Choi Min Soo K. , Ramnauth Jailall , Rakhit Suman , Hudgins Robert R. , Fabris Daniele , Johnson Philip E. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Kahiricosides II—V, Cycloartane Glycosides from an Egyptian Collection of Astragalus kahiricus.
Authors: Radwan Mohamed M. , El‐Sebakhy Nadia A. , Asaad Aya M. , Toaima Soad M. , Kingston David G. I. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
A Novel Dipeptide‐Based HIV Protease Inhibitor Containing Allophenylnorstatine.
Authors: Abdel‐Rahman Hamdy M. , El‐Koussi Nawal A. , Alkaramany Gamal S. , Youssef Adel F. , Kiso Yoshiaki 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of a Useful Lauryl Thioglycoside of Sialic Acid and Its Application.
Authors: Matsuoka Koji , Onaga Tomotsune , Mori Tomonori , Sakamoto Jun‐Ichi , Koyama Tetsuo , Sakairi Nobuo , Hatano Ken , Terunuma Daiyo 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Acetogenic Isoquinoline Alkaloids. Part 159. Ancistroheynine B and Two Further 7,3′‐Coupled Naphthylisoquinoline Alkaloids from Ancistrocladus heyneanus Wall.
Authors: Bringmann Gerhard , Dreyer Michael , Michel Manuela , Tayman Francis S. K. , Brun Reto 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis, Structure, and Cytostatic Properties of New Olivacine Derivatives.
Authors: Jasztold‐Howorko Ryszard , Croisy Alain , Carrez Daniele , Jaroszewicz Iwona , Nasulewicz Anna , Pelczynska Marzena , Opolski Adam 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Synthesis of the Novel Bicyclic Oxepinopyrimidine and Fluorinated Pyrrolidinopyrimidines.
Authors: Batinac Sanja , Sermek Draginja Mrvos , Cetina Mario , Pavelic Kresimir , Mintas Mladen , Raic‐Malic Silvana 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Candibirin A, a Furanocoumarin Dimer Isolated from Heracleum candicans Wall.
Authors: Doi Mitsunobu , Nakamori Terue , Shibano Makio , Taniguchi Masahiko , Wang Nian‐He , Baba Kimiye 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
(4R,4aR,6S,7S,7aS) ‐6‐Hydroxy‐7‐hydroxymethyl‐4‐methylperhydrocyclopenta[c]pyran‐1‐one Chloroform Solvate from Valeriana laxiflora.
Authors: Khera Smriti , Carducci Michael D. , Gu Jian‐Qiao , Timmermann Barbara N. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.
Identification of a Highly Potent and Selective DNA‐Dependent Protein Kinase (DNA‐PK) Inhibitor (NU7441) by Screening of Chromenone Libraries.
Authors: Leahy Justin J. J. , Golding Bernard T. , Griffin Roger J. , Hardcastle Ian R. , Richardson Caroline , Rigoreau Laurent , Smith Graeme C. M. 
Published: March 2005

AbstractFor Abstract see ChemInform Abstract in Full Text.