bluuebunny/crossref_metadata_2025 huggingface dataset:
О полноте одной пары биортогонально сопряженных систем функций
Authors: Гималтдинова (Карамова) Альфира Авкалевна , Gimaltdinova (Karamova) Al'fira Avkalevna , Курман Ксения Владимировна , Kurman Ksenija Vladimirovna
Published: July 2015

В работе изучена спектральная задача для обыкновенного дифференциального уравнения второго порядка на конечном отрезке с разрывным коэффициентом при старшей производной. На концах отрезка заданы краевые условия первого рода, во внутренней точке заданы условия сопряжения по функции и первой производной. Найдены собственные значения с соответствующей асимптотикой как корни трансцендентного уравнения. Система собственных функций представляет собой тригонометрические синусы на одной половине отрезка и гиперболические синусы - на другой. Система собственных функций неортогональна в пространстве квадратично суммируемых функций. Построена соответствующая ей биортогональная система функций как решение сопряженной задачи. При доказательстве полноты биортогональной системы использована известная теорема Келдыша о полноте системы собственных функций несамосопряженного оператора.
О решениях эллиптических уравнений с нестепенными нелинейностями в неограниченных областях
Authors: Кожевникова Лариса Михайловна , Kozhevnikova Larisa Mikhailovna , Хаджи Анна Александровна , Khadzhi Anna Alexandrovna
Published: July 2015

В работе выделен некоторый класс анизотропных эллиптических уравнений второго порядка дивергентного вида с младшими членами с нестепенными нелинейностями $$\sum\limits_{\alpha=1}^{n}(a_{\alpha}({\boldsymbol x},u,\nabla u))_{x_{\alpha}}-a_0({\boldsymbol x},u,\nabla u)=0.$$ На каратеодориевы функции, входящие в уравнение, накладывается условие совокупной монотонности. Ограничения на рост функций формулируются в терминах специального класса выпуклых функций. Эти требования обеспечивают ограниченность, коэрцитивность, монотонность и семинепрерывность соответствующего эллиптического оператора. Для рассматриваемых уравнений с нестепенными нелинейностями исследованы качественные свойства решений задачи Дирихле в неограниченных областях $\Omega\subset \mathbb{R}_n,\;n\geq 2$. Установлены существование и единственность обобщeнных решений в анизотропных пространствах Соболева-Орлича. Кроме того, для произвольных неограниченных областей обобщены теоремы вложения анизотропных пространств Соболева-Орлича. Это позволило доказать глобальную ограниченность решений задачи Дирихле. Использована оригинальная геометрическая характеристика для неограниченных областей, расположенных вдоль выделенной оси. В терминах этой характеристики установлена экспоненциальная оценка скорости убывания на бесконечности решений рассматриваемой задачи с финитными данными.
Свертки по рангам и кватернионным типам в алгебрах Клиффорда
Authors: Широков Дмитрий Сергеевич , Shirokov Dmitry Sergeevich
Published: July 2015

В работе рассмотрены выражения в вещественных и комплексных алгебрах Клиффорда, называемые свертками или усреднениями. Свертка берется от произвольного элемента алгебры Клиффорда, при этом ведется суммирование по различным элементам фиксированного базиса алгебры Клиффорда. Рассмотрены четные и нечетные свертки, свертки по рангам и свертки по кватернионным типам. Представлена связь сверток с операциями проецирования на выделенные подпространства алгебры Клиффорда - четное и нечетное подпространство, подпространства фиксированных рангов и подпространства фиксированных кватернионных типов. С помощью метода сверток дано решение различных систем коммутаторных уравнений в алгебрах Клиффорда. Особое внимание уделено двум частным случаям - случаям коммутатора и антикоммутатора. Полученные результаты могут применяться при изучении различных уравнений теории поля - уравнений Янга-Миллса, простейшего полевого уравнения и других.
О парадигме внутренней турбулентности
Authors: Яковлев Николай Николаевич , Yakovlev Nikolay Nikolayevich , Лукашев Евгений Алексеевич , Lukashev Eugeniy Alekseevich , Радкевич Евгений Владимирович , Radkevich Evgenii Vladimirovich , Палин Владимир Владимирович , Palin Vladimir Vladimirovich
Published: July 2015

Статья посвящена проблемам реконструкции начальной стадии внутренней турбулентности (без учета граничных эффектов). Введением вязкости и диффузионного расслоения проводится нестандартная регуляризация многокомпонентной системы Эйлера. Для нее получены аналог условия Гюгонио и аналог условия устойчивости Лакса. Исследована проблема локальной достижимости точек фазового пространства. Построены бифуркации однофронтовых решений усеченной системы Эйлера в двухфронтовые решения. Показан сверхзвуковой характер появления бифуркаций. Построена реконструкция начальной стадии внутренней турбулентности (без учета граничных эффектов), включая математическое описание возникновения двухскоростного режима (катастрофа Римана-Гюгонио) и перемежаемости.
Sobolev-Kantorovich Inequalities
Authors: Ledoux Michel
Published: July 2015

In a recent work, E. Cinti and F. Otto established some new interpolation inequalities in the study
of pattern formation, bounding the Lr(μ)-norm of a probability density with respect to the reference measure
μ by its Sobolev norm and the Kantorovich-Wasserstein distance to μ. This article emphasizes this family of
interpolation inequalities, called Sobolev-Kantorovich inequalities, which may be established in the rather
large setting of non-negatively curved (weighted) Riemannian manifolds by means of heat flows and Harnack
inequalities.
Josephus im jiddischen Gewand – die jiddische Übersetzung des Sefer Yosippon
Authors: Dönitz Saskia
Published: July 2015

This article describes the reception history of the Jewish-Hellenistic author Flavius Josephus in Christian and Jewish literature up to the Yiddish translation of
Ritter außer Gefecht. Konzepte passiver Bewährung im Wigalois und im Widuwilt
Authors: Lembke Astrid
Published: July 2015

Wirnt von Grafenberg’s Middle High German romance ›Wigalois‹ features a hero who proves his knightly excellence not only actively when fighting male opponents but also passively when threatened by aggressive women. By killing his most dangerous opponent and burying that opponent’s wife, Wigalois overcomes his passivity and turns into an unquestioned sovereign ruler. The protagonist of the romance ›Widuwilt‹, on the other hand, a late medieval anonymous Yiddish adaptation of Wirnt ’s ›Wigalois‹, is characterized as passive and helpless throughout the text. Instead of overcoming his most dangerous opponent, the hero is overcome himself. Until the very end he depends upon the help of others, especially women. This transformation points to a preference for symmetrical relationships between men and women as well as to a concept of heroism that places the hero within his community instead of apart from it.
Das jischev fun Nar-husen: Jiddische Narrenliteratur und jüdische Narrenkultur
Authors: von Bernuth Ruth
Published: July 2015

Exploration of the role of folly in medieval and early modern Jewish culture – aside from the festival of Purim and, especially, Purim plays – has been minimal. Looking at Yiddish translations of
School climate as the determinant of the relationship between the level of students’ resilience and school satisfaction
Authors: Tamášová Viola , Barnová Silvia
Published: July 2015

Resilience is an individual’s capacity to recover, adapt, and keep mental balance and normal functioning when exposed to significant adversity. This competence plays an important role in one’s life because it increases the probability of achieving success in various spheres of life. Schools can foster students’ resilience by providing a positive school environment and a sufficient number of protective factors, but it is the subjective interpretation of conditions and experiences rather than the exposure to them that is significant. The main objective of this research was to study to what extent school satisfaction, i.e. subjective interpretation of the school climate, influenced the level of students’ resilience. Not all our findings are compatible with the results of other studies. Despite the limits of our research, its results can serve as a basis for further work as not much has been done in the field of resilience research in Slovakia.
Investigating the English Language Needs of Students at the University of Zilina
Authors: Lengyelfalusyová Dana , Bakay Záhorská Michaela
Published: July 2015

This paper focuses on investigating the needs of students of ESP courses at the University of Zilina via needs analysis questionnaire. The results of the research reveal the necessity to reconsider the content of the study material at language courses at the university to satisfy the students’ subject needs as well as the needs of the international job market by implementing activities enhancing the communicative competence in ESP.
The Soterios Project revisited: status quaestionis and the future edition
Authors: De Groote Marc
Published: July 2015

Not until 2006 could the scholarly community welcome the first critical edition of the 103 Quaestiones et responsiones ascribed to Anastasius of Sinai (CPG 7746; M. Richard / J.A. Munitiz. CCSG, 59). However, this publication did not solve all topics surrounding Anastasius’s work, because 21 Greek manuscripts contain still another florilegium, the so-called Σωτήριος dating from before 900 AD, whose core is formed by 88 ἐρωταποκρίσεις. Between 914 and 927 a Slavonic translation thereof was made which has been preserved in the so-called Изборник, a codex from 1073. The first and sole critical edition of the Slavonic text was made by O.M. Bodjanskij (1845). The 900th anniversary of the Изборник in 1973 incited the interest in the Greek original. Eventually, in 1996 the decision to edit the Greek text was made, mainly under the impetus of Prof. em. Dr F. J. Thomson. This edition, originally started by Dr D.Tj. Sieswerda, will be continued by the author of this article in close cooperation with Dr L. Sels, specialist in Church Slavonic.
The propaganda value of imperial patronage: ecclesiastical foundations and charitable establishments in the late twelfth century
Authors: Simpson Alicia
Published: July 2015

The foundation of religious edifices and the establishment of charitable institutions in Constantinople by members of the imperial family during the Komnenian period are subjects that have received extensive scholarly attention. The current paper extends the discussion to the period 1180 -1204, investigating the patronage undertaken by the emperors of this time and in particular by Andronikos I Komnenos (1183-85) and Isaac II Angelos (1185-95). In addition to highlighting the ambitious and extensive patronage of religious edifices and charitable institutions by these emperors, the paper explores the character of the imperial foundations in question and considers the motives of their patrons.
Some applications of the theory of harmonic
integrals
Authors: Matsumura Shin-ichi
Published: July 2015

In this survey, we present recent techniques on the theory of harmonic integrals to study the cohomology
groups of the adjoint bundle with the multiplier ideal sheaf of singular metrics. As an application,
we give an analytic version of the injectivity theorem.
Compact lcK manifolds with parallel vector
fields
Authors: Moroianu Andrei
Published: July 2015

We show that for n > 2 a compact locally conformally Kähler manifold (M2n , g, J) carrying a nontrivial
parallel vector field is either Vaisman, or globally conformally Kähler, determined in an explicit way
by a compact Kähler manifold of dimension 2n − 2 and a real function.
Occurrence of the fungus Clathrus archeri (Phallaceae) in the Rożnowskie Foothills (Western Carpathians, Poland)
Authors: Stebel Adam
Published: July 2015

The paper presents the description of the new site of the expanding fungus Clathrus archeri (Berk.) Dring. in the Polish part of the Carpathians
A new locality of expansive moss species Orthodicranum tauricum (Bryophyta, Dicranaceae) in North–Estern Poland
Authors: Chmielewski Jarosław
Published: July 2015

A new locality of expansive moss species Orthodicranum tauricum has been found in the Napiwodzko - Ramucka forest, between villages Zginłocha and Nowa Kaletka, Poland.
Moth flies (Diptera: Psychodidae) of the Moravskoslezské Beskydy Mts and the Podbeskydská pahorkatina Upland, Czech Republic
Authors: Ježek Jan , Kroča Jiří
Published: July 2015

The investigation of Psychodidae is still far from finished in the NW part of the Carpathians of the Czech Republic, only 21 species have been published in scattered papers in the past. Altogether 36 genera of moth flies and 84 species including 20 threatened or rare taxa are recorded in this study from 8 localities: 5 mountainous and 3 submountainous sites. Katamormia niesiolowskii (Wagner, 1985) and Threticus negrobovi Vaillant, 1972 are new for the fauna of the Czech Republic, Katamormia strobli Ježek, 1986 and Philosepedon (Philothreticus) soljani Krek, 1971 are new for Moravia (incl. Silesia); three species are new for the Carpathians Mts generally, and 9 for the Carpathians Mts. of the Czech Republic. The total number of moth flies in CZ is increased to 175 species. The communities of moth flies of the preserved areas and localities studied here (in contrast to Kněhyňka 2.) are among the richest sites in the Czech Republic.
Lessons from the “Constitutional Mythology” or How to Reconcile the Concept of State Sovereignty with European Intagration
Authors: Hamuľák Ondrej
Published: July 2015

This paper analyses the question of how to perceive the traditional theoretical concept of state sovereignty vis-á-vis European integration. Within the European project we face the paradox of having two authorities claiming autonomy and dominance. It is undisputable that the European Union is behaving like an autonomous public power - the new sovereign of its kind. But at the same time the Member States also maintain their sovereign statehood. This duality cannot be comprehended together with the old characteristics of sovereignty, which accepts only one holder of this feature. To reconcile the phenomena of European integration and the concept of sovereignty, we must shift into new definitions of the latter. This paper argues in favour of the acceptation of a shared sovereignty concept.
Important issues in the cytotoxicity screening of nano-sized materials
Authors: E. Fröhlich , Meindl Claudia , Pieber Thomas R.
Published: July 2015

Due to their extraordinary properties nano-sized materials (NMs) are increasingly used in industrial, pharmaceutical and medical applications. An even broader use is currently limited by concern about their potential adverse effect on health. Screening for toxic effects of all engineered NMs therefore, is needed to demonstrate biocompatibility. The identification of adverse cellular effects is one of the first steps in the toxicological assessment of drug compounds before they get to the market. A panel of cytotoxicity screening assays is available and can be used also for the assessment of NMs. The use of these established and validated assays for the testing of NMs, however, is complicated by the fact that NMs may interfere by color, chemical reactivity and light scattering leading to false positive or false negative results. The paper illustrates the principles of conventional cytotoxicity screening assays and discusses their suitability for the assessment of NMs. Adequate controls to identify interference and alternatives, if interference with the used assay is seen, are suggested.
Cerium dioxide nanoparticles selectively up-regulate C-C chemokine receptor 2 and CD16 expression on human monocytes
Authors: Gamucci Olimpia , Bardi Giuseppe
Published: July 2015

Cerium dioxide nanoparticles (CeO2 NPs) are known as scavengers of reactive oxygen species for the coexistence of Ce3+/ Ce4+ oxidation states. Cell treatments with CeO2 NPs often lead to controversial pro-inflammatory and anti-inflammatory results. The aim of the study was to investigate the immune events following the administration of ceria nanoparticles to THP-1 monocytes. To address this issue, we performed flow cytometry, chemotaxis and ELISA experiments on THP-1 monocytes treated with different concentrations of CeO2 NPs. CeO2 nanoparticle treatments induced a significant pro-inflammatory C-C chemokine receptor 2 (CCR2) up-regulation within the first 6 hours lasting over-expressed for 24 hours. Differently, CCR5 showed no response at any concentration tested. Enhanced chemotaxis towards the CCR2 specific ligand MCP-1 reinforced the observation demonstrating a functional immune outcome. The pro-inflammatory profile of the treated monocytes was also supported by CD16 up-regulation but no differences in CX3CR1 or other monocyte receptors, like CD11b and CD14, were detectable. Moreover, CeO2 NPs exposure did not promote any release of inflammatory cytokines suggesting a specific and direct effect of the nanoparticles on CCR2 and CD16.

Our in vitro results reveal a specific role of CeO2 NPs in the up-regulation of CCR2, which might contribute to increase the pro-inflammatory monocyte/macrophage migration toward the sites of CCL2 expression.
The Efficacy of Thyrotropin Suppression Therapy in Treatment of Differentiated Thyroid Cancer after Total Thyroidectomy
Authors: Abo-Touk Niveen A. , Zayed Dalia H.
Published: July 2015

Background: The aim of this prospective study was to assess the effect of the TSH suppression on both disease-free and overall survivals in patients with nonmetastatic differentiated thyroid cancer (DTC) after total thyroidectomy.

Patients & Methods: One hundred and forty eight patients with pathologically proved operable differentiated thyroid carcinoma were enrolled in this prospective study. Levothyroxin (L-T4) therapy was started in doses according to treatment groups. Patients were randomly assigned to receive either postoperative TSH suppression therapy in group I (76 patients) or nonsuppression therapy in group II (72 patients).

Results: During the period of follow up with a median 54 months, the disease-free survival for patients without TSH suppression therapy did not reach statistically significant difference comparing with those for patients with the suppression therapy (p=0.09). However, the difference was statistically significant for high-risk patients (p=0.04). On comparing both groups there was no statistically significant difference with regard to overall survival (p=0.17). The age of the patients more than 45 years, tumour size more than 4 cm and high-risk group were significant independent predictors for thyroid carcinoma-related relapse in univariate analysis. However, tumour size was the only significant factor in multivariate analysis.

Conclusion: Suppressive treatment with L-T4 therapy in patients with differentiated thyroid carcinoma should be individualised and balanced against the adverse effects. TSH suppression is indicated in patients with high-risk disease or recurrent tumour. Normalisation of serum TSH is preferred for long-term treatment of disease-free elderly patients with DTC and comorbidities.
Bounded gaps between primes with a given primitive root, II
Authors: Baker Roger C. , Pollack Paul
Published: July 2015

Let m be a natural number, and let

𝒬

${\mathscr{Q}}$

be a set containing at least

exp
⁡

(

C
⁢
m

)

${\exp(Cm)}$

primes. We show that one can find infinitely many strings of m consecutive primes each of which has some

q
∈
𝒬

${q\in\mathscr{Q}}$

as a primitive root, all lying in an interval of length

O
𝒬

⁢

(

exp
⁡

(

C
′

⁢
m

)

)

${O_{\mathscr{Q}}(\exp(C^{\prime}m))}$

. This is a bounded gaps variant of a theorem of Gupta and Ram Murty. We also prove a result on an elliptic analogue of Artin’s conjecture. Let

E
/
ℚ

${E/\mathbb{Q}}$

be an elliptic curve with an irrational 2-torsion point. Assume GRH. Then for every m, there are infinitely many strings of m consecutive primes p for which

E
⁢

(

𝔽
p

)

${E(\mathbb{F}_{p})}$

is cyclic, all lying an interval of length

O
E

⁢

(

exp
⁡

(

C
′′

⁢
m

)

)

${O_{E}(\exp(C^{\prime\prime}m))}$

. If E has CM, then the GRH assumption can be removed. Here C,

C
′

${C^{\prime}}$

, and

C
′′

${C^{\prime\prime}}$

are absolute constants.
A three-dimensional void reconstruction method for analyzing fractal dimensions of void volume in wood-strand composites
Authors: Li Peng , Tao Yubo , Wu Qinglin
Published: July 2015

A three-dimensional reconstruction method has been developed for voids in oriented strandboards made of mixed hardwood flakes. The method relies on the combination of X-ray computer tomography, image processing, and computer-aided design. The fractal dimension of void volume (FDVV) in the manufactured samples was calculated based on Menger sponge fractal model. It was shown that the FDVV decrement is linear to the increased void volume ratio. At the same overall porosity level, FDVV varied as a function of internal void distribution. FDVV can be a useful parameter for characterizing the internal void structure of strand-based wood composites.
First record of Cydalima perspectalis (Walker, 1859) (Lepidoptera: Crambidae) in Greece
Authors: Strachinis I. , Kazilas C. , Karamaouna F. , Papanikolaou N.E. , Partsinevelos G.K. , Milonas P.G.
Published: July 2015

The study concerns the first records for the presence of the box tree moth Cydalima perspectalis in Greece and subsequent infestations on ornamental box trees in urban environment. Adults of the pest were first spotted in six locations around the country from October 2013 until April 2015, when infestation was also detected (mid April). The pest was found infesting plants of Buxus sempervirens in several private and public gardens and parks in the urban environment of Kifissia, Attica. Possible introduction scenarios, as well as preventive and control measures are discussed.
Simulation and Performance of a Solar Drying Unit with Storage for Aromatic and Medicinal Plants
Authors: Ayadi M. , Zouari I. , Bellagi A.
Published: July 2015

The objective of this work, based on a theoretical and experimental study, is to investigate the energy and economic performance of a totally solar drying unit with storage for aromatic and medicinal plants, to satisfy a dimensioning already carried out on a macroscopic scale for an energy request well defined: to dry a quantity of a given agricultural products during 1 day of harvest season, so between September and May, with a heat storage which relays at night. Drying experiments were conducted for spearmint grown in Tunisia. Mathematical formulation of the physical process of this solar drying unit based on conventional heat and mass transfer equations showed a certain agreement with the experimental results under climatic conditions of Tunis (Tunisia). All the experimental drying curves showed only a falling drying rate period. The main factor in controlling the drying rate was found to be the drying air temperature. It was observed that this unit is able to dry more than 2.5 kg of spearmint per day with a moisture reduction efficiency of 70%. It was found that for all the period of harvest, so for 5 months assumed dryer used per year, the payback period is 3.6 years.
Role and Responsibilities of Laboratory Medicine Specialists in the Verification of Metrological Traceability of in Vitro Medical Diagnostics / Uloga I Odgovornosti Specijalista Laboratorijske Medicine U Verifikaciji Metrološke Sledljivosti In Vitro Medicinske Dijagnostike
Authors: Braga Federica , Infusino Ilenia , Panteghini Mauro
Published: July 2015

To be accurate and equivalent, laboratory results should be traceable to higher-order references. Furthermore, their quality should fulfill acceptable measurement uncertainty as defined to fit the intended clinical use. With this aim, in vitro diagnostics (IVD) manufacturers should define a calibration hierarchy to assign traceable values to their system calibrators and to fulfill during this process uncertainty limits for calibrators, which should represent a proportion of the uncertainty budget allowed for clinical laboratory results. It is therefore important that, on one hand, the laboratory profession clearly defines the clinically acceptable uncertainty for relevant tests and, on the other hand, endusers may know and verify how manufacturers have implemented the traceability of their calibrators and estimated the corresponding uncertainty. Important tools for IVD traceability surveillance are quality control programmes through the daily verification by clinical laboratories that control materials of analytical systems are in the manufacturer’s declared validation range [Internal Quality Control (IQC) component I] and the organization of Exter nal Quality Assessment Schemes meeting metrological criteria. In a separate way, clinical laboratories should also monitor the reliability of employed commercial systems through the IQC component II, devoted to estimation of the measurement uncertainty due to random effects, which includes analytical system imprecision together with individual laboratory performance in terms of variability.
Crystal structure of diaqua-bis[1-cyclopropyl-7-(4-ethylpiperazin-1-yl)-6- fluor-4-oxo-1,4-dihydrochinolin-3-carboxylic acid]manganese(II)-benzene- 1-carboxyl-4-carboxylate octahydrate, C54H74F2MnN6O24
Authors: Zhu Ling , Zhou Tian
Published: July 2015

C54H74F2MnN6O24, monoclinic, P21/n (no. 14), a = 13.5493(4) Å, b = 13.8063(4) Å, c = 16.7349(4) Å, β = 106.935(2)°, V = 2994.8 Å3, Z = 2, Rgt(F) = 0.0629, wRref(F2) = 0.1500, T = 296 K.
The Use of Offshore Blocker Corporations by U.S. Nonprofits: Should Blockers Be Blocked?
Authors: Silber Norman I. , Wei John C.
Published: July 2015

Many U.S. nonprofits use offshore blocker corporations to avoid paying the debt-financed unrelated business income tax (UBIT). Some lawmakers and commentators, however, criticize the practice as abusive. This article takes a closer look at the issue. It concludes that the use of offshore blocker corporations does not undermine the main purposes of the debt-financed UBIT, but that the practice nevertheless raises some serious policy concerns. The article thus recommends that Congress reform this tax: either by eliminating the blocker corporation workaround to the debt-financed UBIT or, alternatively, by repealing the debt-financed UBIT completely but leaving in place or even expanding the debt-financed UBIT’s reporting requirements.
Curating Archaeological Knowledge in the Digital Continuum: from Practice to Infrastructure
Authors: Dallas Costis
Published: July 2015

As a “grand challenge” for digital archaeology, I propose the adoption of programmatic research to meet the challenges of archaeological curation in the digital continuum, contingent on curation-enabled global digital infrastructures, and on contested regimes of archaeological knowledge production and meaning making. My motivation stems from an interest in the sociotechnical practices of archaeology, viewed as purposeful activities centred on material traces of past human presence. This is exemplified in contemporary practices of interpretation “at the trowel’s edge”, in epistemological reflexivity and in pluralization of archaeological knowledge. Adopting a practice-centred approach, I examine how the archaeological record is constructed and curated through archaeological activity “from the field to the screen” in a variety of archaeological situations. I call attention to Çatalhöyük as a salient case study illustrating the ubiquity of digital curation practices in experimental, well-resourced and purposefully theorized archaeological fieldwork, and I propose a conceptualization of digital curation as a pervasive, epistemic-pragmatic activity extending across the lifecycle of archaeological work. To address these challenges, I introduce a medium-term research agenda that speaks both to epistemic questions of theory in archaeology and information science, and to pragmatic concerns of digital curation, its methods, and application in archaeology. The agenda I propose calls for multidisciplinary, multi-team, multiyear research of a programmatic nature, aiming to re-examine archaeological ontology, to conduct focused research on pervasive archaeological research practices and methods, and to design and develop curation functionalities coupled with existing pervasive digital infrastructures used by archaeologists. It has a potential value in helping to establish an epistemologically coherent framework for the interdisciplinary field of archaeological curation, in aligning archaeological ontologies work with practice-based, agencyoriented and participatory theorizations of material culture, and in matching the specification and design of archaeological digital infrastructures with the increasingly globalized, ubiquitous and pervasive digital information environment and the multiple contexts of contemporary meaning-making in archaeology.
Factors Influencing Mesostigmata Mites (Acari, Parasitiformes) In The Alkaline Fen Habitats
Authors: Salmane Ineta , Spuņģis Voldemārs
Published: July 2015

Mesostigmata mite fauna was investigated in soil of one alkaline fen at Apšuciems in the Maritime Lowland in Latvia in 2009. Thirty sample plots were selected in the following way: half of them were located in Brown Bog Rush, Schoenus ferrugineus and half — in Saw-Sedge, Cladium mariscus prevailing habitat. Soil samples were collected using a soil borer. Vegetation cover was described in accordance with Braun-Blanquet classes. Mites were extracted using modified Berlese funnels. In total, more than 28 species were recorded, of them Prozercon kochi and Pergamasus vagabundus were dominant species. Mean density of Mesostigmata mites ranged from 520 to 2140 ind./m2. Mite abundance and distribution between habitats depended on vegetation cover of the vascular plants, while moss cover and soil pH had no significant influence.
Effect of pre-stain methanol washing on the sensitivity of CBBR-250 staining in SDS-polyacrylamide gels
Authors: Saleem Rashid , Hasnain Absar-ul , Ahmad Riaz
Published: July 2015

Coomassie Brilliant Blue R-250 (CBBR-250) is the most frequently used dye stain in protein research. However, relatively poor sensitivity and long application durations are the major limitations of this stain. In the present study, we have investigated the effect of pre-stain methanol washing on the sensitivity of the conventional CBB staining method. Concentrations of methanol ranging from 5 to 30% were prepared in 5% acetic acid. Pre-stain washing of SDS-gels using acetic acid (5%) and methanol were assessed at various timings and temperatures. Our results demonstrate that pre-stain washing by methanol greatly improves the sensitivity of the CBB stain and facilitates the visualization of low molecular weight components present in a complex muscle protein, actomyosin. The outcome of this study also revealed duration of pre-stain washing and temperature as other factors that determine the sensitivity of CBB staining method. Therefore, it is suggested that pre-stain washing with methanol may improve the sensitivity of CBB stain in SDS-PA gels.
Design of experiment in the development of spme method for the determination of pesticide residues in fruits and vegetables
Authors: Abdulra’uf Lukman Bola , Tan Guan Huat
Published: July 2015

The various microextraction techniques have been developed in order to reduce sample preparation time, improve sensitivity and selectivity as well as to corroborate the recent advances in the development of highly sensitive and efficient analytical instrumentation. The current trend is aimed at the simplification and miniaturization of extraction steps, which has led to the combination of multi-step extraction and analytical analysis into single uninterrupted step. The method development involves the screening and subsequent optimization of both gas chromatography-mass spectrometry (GC-MS) and solid phase microextraction (SPME) parameters using multivariate experimental design, which has been shown to be efficient and effective with little experimental runs. The use of microextraction has been very effective in the analysis of contaminants in food, water and the environments to ensure they are safe and does not pose any health risk to human.
The language of fashion in postmodern society: A social semiotic perspective
Authors: Boero Marianna
Published: July 2015

This article analyzes the language of fashion in postmodern society with the hypothesis that fashion trends mutate when social trends change, in a relationship of reciprocal construction that we can define as social semiotics. The analytic approach ranges from social semiotics to the fashion theory field. If social semiotics focuses on the study of signs, spaces, and language mutations in the system of social discourses, fashion theory provides a perspective combining lifestyles, worldviews, personal meanings, and social values about custom: indeed, in fashion we simultaneously observe participation in collective trends and the expression of individuality.
Questions toward a Peircean phenomenological description of association
Authors: Sørensen Bent , Thellefsen Torkild
Published: July 2015

According to the philosopher and scientist Charles Peirce (1839–1914) phenomenology is fundamental to all scientific inquiry and association is the only force that exists within the intellect. However, Peirce only gave his reader a hint about the relationship between phenomenology and association. In this article we will try to follow that hint and point towards a couple of main questions that can guide a Peircean phenomenological description of association. Hence, the conclusion of the article will not be a phenomenological description of association but rather a couple of main questions trying to determine how such a phenomenological description can begin in the first place. Our hypothesis is that the questions depend for their construction on the inter-relatedness and interdependence of certain central Peircean phenomenological concepts – especially, Thirdness, Secondness, and Firstness.
A new bound for the spectral radius of Brualdi-Li matrices
Authors: Chen Xiaogen
Published: July 2015

Let B2m denote the Brualdi-Li matrix of order 2m, and let ρ2m = ρ(B2m ) denote the spectral radius
of the Brualdi-Li Matrix. Then

.

where m > 2, e = 2.71828 · · · ,

and

.
Taxonomic Review Of The Genus Yunnantettix (Orthoptera, Tetrigidae) From The Oriental Region
Authors: Storozhenko S. Yu. , Pushkar T. I.
Published: July 2015

Taxonomic review of the genus Yunnantettix Zheng, 1995 is given. It is similar to Aspiditettix Liang, 2009, Pseudepitettix Zheng, 1995, and Epitettix Hancock, 1907. Yunnantettix is the most similar to Aspiditettix in the general appearance, the rugose disc of the pronotum, and the bisinuate lateral lobe of the pronotum, and diff erent from it by the completely reduced hind wing and the position of the antennal socket. Yunnantettix is similar to Pseudepitettix and Epitettix in the moderately widened frontal ridge and low median carina of pronotum, but diff erent from the latter by the presence of the narrow tegmen and a shallow yet distinct tegminal (upper) sinus on the pronotal lateral lobe. Originally, Yunnantettix is a monotypic genus (type species: Yunnantettix bannaensis Zheng, 1995 from South China). Two species are additionally included to this genus: Yunnantettix elytratus (Günther, 1939), comb. n. (= Epitettix elytratus Günther, 1939) from India and Yunnantettix thaicus, sp. n. from Th ailand. Th e new species diff ers from all other species of this genus by the shallow excision on apex of the posterior pronotal process and by the external lateral pronotal carina, arch-like and strongly curved upward above the tegmen. A key to the species and redescription of the genus Yunnantettix are provided.
What Does Russell’s Argument against Naive Realism Prove?
Authors: Keller Rebecca , Westphal Jonathan
Published: July 2015

We provide a study of Russell’s argument (in An Inquiry into Meaning and Truth) against naive realism in which we distinguish five different forms of the argument. We agree with McLendon’s (1956) criticism, that Russell’s premiss that naive realism leads to physics (our emphasis) is ambiguous as between “leads historically or psychologically” and “leads logically”. However, physics does logically lead to naive realism, in the sense that it presupposes it. In that case it is physics that is false. There is also the possibility that physics and naive realism are compatible, and that possibility obtains if phenomenalism is true.
Confrontations in the New World: Grete Weil's Happy, sagte der Onkel (1968)
Authors: Nussbaum Laureen
Published: July 2015

In her essay “Travel Writing and Gender,” the British scholar Susan Bassnett makes two  points that are relevant in analyzing Grete Weil’s travel tales, Happy, sagte der Onkel (Happy, Said My Uncle). Bassnett remarks that “increasingly in the twentieth century, male and female travelers have written self-reflexive texts that defy easy categorization as autobiography, memoir, or travel account.” This observation certainly holds true for Grete Weil’s slim volume, and so does Bassnett’s gender-specific assertion that there is a “strand of women’s travel writing that has grown in importance in the twentieth century: the journey that leads to greater self-awareness and takes the reader simultaneously on that journey.”
An Updated Collection of Sequence Barcoded Temperature-Sensitive Alleles of Yeast Essential Genes
Authors: Kofoed Megan , Milbury Karissa L , Chiang Jennifer H , Sinha Sunita , Ben-Aroya Shay , Giaever Guri , Nislow Corey , Hieter Philip , Stirling Peter C
Published: July 2015

Systematic analyses of essential gene function using mutant collections in Saccharomyces cerevisiae have been conducted using collections of heterozygous diploids, promoter shut-off alleles, through alleles with destabilized mRNA, destabilized protein, or bearing mutations that lead to a temperature-sensitive (ts) phenotype. We previously described a method for construction of barcoded ts alleles in a systematic fashion. Here we report the completion of this collection of alleles covering 600 essential yeast genes. This resource covers a larger gene repertoire than previous collections and provides a complementary set of strains suitable for single gene and genomic analyses. We use deep sequencing to characterize the amino acid changes leading to the ts phenotype in half of the alleles. We also use high-throughput approaches to describe the relative ts behavior of the alleles. Finally, we demonstrate the experimental usefulness of the collection in a high-content, functional genomic screen for ts alleles that increase spontaneous P-body formation. By increasing the number of alleles and improving the annotation, this ts collection will serve as a community resource for probing new aspects of biology for essential yeast genes.
Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana
Authors: Suárez Salazar Juan Carlos , Durán Bautista Ervin Humprey , Rosas Patiño Gelber
Published: July 2015

La densidad, riqueza y diversidad de la macrofauna edáfica son afectadas, entre otros factores, por la con-figuración de los agroecosistemas y la estacionalidad de la precipitación. Con el fin de evaluar estos efec-tos en mayo y noviembre de 2011, correspondientes a épocas de máxima y mínima precipitación, respecti-vamente, se realizaron estudios sobre la composición de la macrofauna edáfica asociada con los arreglos agroforestales ubicados en el Centro de Investigaciones Macagual Cesar Augusto Estrada González de Corpoica, Amazonia, Caquetá, Colombia. El experimento se dispuso en un diseño completo al azar bifac-torial con cuatro tratamientos (arreglos agroforestales: AB = abarco – Cariniana pyriformis; CH = caucho Hevea brasiliensis; CP = caucho-parica Schizolobium amazonicum Huber; UV = uvito Genipa Americana L.) y dos épocas (máxima y mínima precipitación), y cuatro repeticiones en parcelas divididas. Para explorar las relaciones entre los órdenes de macrofauna, se realizó un análisis de componentes principales y se evalúo el efecto de los arreglos agroforestales con una prueba de Monte Carlo. Los resultados mostraron que la densidad de la macrofauna fue mayor en el periodo de máxima precipitación (1129 individuos) en compa-ración con el de mínima (598 individuos). Los arreglos agroforestales influyen sobre la presencia o ausen-cia de algunos grupos taxonómicos (P < 0.05) como Homoptera (Insecta) y Raphidioptera (Insecta); ade-más los UV y AB pueden favorecer a la macrofauna del estrés por sequía.
 

 

 

 
Simbiosis de micorrizas arbusculares en plantas de arroz (Oryza sativa L.) en condiciones de inundación y secano
Authors: Ruiz-Sánchez Michel , Santana Baños Yoerlandy , Muñoz Hernández Yaumara , Martínez Robaina Alexei Yoan , Bharat Beesham Vishnu
Published: July 2015

En la Unidad Científico Tecnológica de Base Los Palacios, Cuba, a 22° 34’ 32.73’’ N y 83° 14’ 11.95’’ O, se evaluó el efecto de la inundación sobre la colonización de hongos micorrízicos ar-busculares durante la fase vegetativa de plantas de arroz cultivar INCA LP-5.  Se realizaron dos experimentos en condiciones de invernadero en macetas con una capacidad de 800 g de suelo, ambos experimentos en un diseño experimental completamente aleatorizado.  Uno de ellos se realizó con Rhizophagus (=Glomus) intraradices (Ri), donde se evaluó la dinámica de colonización de la simbiosis micorrízica en condiciones de inundación y secano (no inundadas).  En el segun-do experimento se trabajó con Glomus cubense (Gcb) y se evaluó la colonización micorrízica en plantas de arroz cultivadas con diferentes alturas de lámina de agua.  En ambos experimentos se evaluaron altura de la planta, producción de masa seca y tasa absoluta de crecimiento.  Co-mo resultado se encontró que las plantas de arroz fueron colonizadas a partir del día 35 después de la germinación, tanto en condiciones inundadas como no inundadas, con una tendencia al incremento en el tiempo.  Se comprobó que la colonización micorrízica disminuyó en condiciones de inundación y a medida que la altura de la lámina de agua fue superior se encontraron valo-res inferiores de este indicador.  La colonización micorrízica incrementó el desarrollo de las plan-tas de arroz
 

 

 

 
Remoción de plomo (II) usando lignina obtenida a partir del procesamiento del seudotallo de plátano
Authors: Ramirez Franco Jose Herney , Enríquez Enríquez Maryeni Karina
Published: July 2015

Se evaluó la adsorción de iones plomo (Pb2+) sobre lignina recuperada del licor residual generado en el proceso de producción de papel a partir de seudotallos (vástago) de plátano. La eficiencia de recuperación encontrada fue de aproximadamente 82%. La lignina fue caracterizada mediante espectroscopia de infrarrojo con el objeto de identificar sitios activos adecuados para el proceso de adsorción de metales pesados. Sus características de superficie se determinaron mediante isotermas de adsorción - desorción de nitró-geno (N2). La lignina recuperada después de su uso en adsorción mostró un área superficial de 840 m2/g y un volumen total de poros de 0.30 cm3/g. Para evaluar la capacidad de adsorción de la lignina respecto de la concentración inicial de los iones, se prepararon soluciones de Pb2+ 0.6, 0.8 y 1.0 mM. Finalmente, se determinó la concentración final de Pb2+ por medio de espectroscopia de absorción atómica, encontrando remociones de 55%.
Análisis de los sistemas de semillas en países de América Latina
Authors: Arenas Calle Wendy Catalina , Cardozo Conde Carlos Ivan , Baena Margarita
Published: July 2015

América Latina es una región que posee una gran riqueza ambiental, cultural y social, con sistemas variables de agricultura según sus condiciones de producción, cultivos, y factores culturales, económicos y políticos.  Esta amplia diversidad de factores influye en los niveles de productividad agrícola y en la capacidad competitividad de la región.  El sector de semillas es diferente en cada país y posee características, dinámicas y normas propias según sus contextos locales, incluso, dentro de un país coexisten diferencias entre los sectores semilleros entre cultivos y/o regiones.  Considerando que cada sistema tiene sus propias características, actores e interacciones, se hace necesario proponer estudios para abordar su conocimiento a través de los cuales se determine el estado de desarrollo del sector en cada país.  En este estudio se realiza una revisión bibliográfica y búsqueda de datos disponibles referentes a los sistemas de semillas de Brasil, Guatemala, Perú y Colombia con el fin de presentar el estado y desarrollo del sistema en cada uno de ellos.  En general, el sistema en Brasil muestra un sistema evolucionado según los criterios de clasificación de Douglas (1982).  Colombia y Perú presentan sistemas desarrollados para algunos cultivos, especialmente los de tipos comercial de mayor interés.  En Guatemala el abastecimiento de semillas depende principalmente de la producción propia de agricultores y/u organizaciones públicas mediante programas dirigidos al apoyo de pequeños agricultores.
 

 

 

 
Detección de Eurhizococcus colombianus (Hemiptera: Margarodidae) en mora por espectroscopía del infrarrojo cercano
Authors: Meneses ospina Elizabeth , Arango Gloria , Correa Guillermo , Ruiz Orlando , Vargas Luis Gonzalo , Perez Juan Carlos
Published: July 2015

La selección de métodos apropiados para muestreo y análisis es un aspecto importante en el estudio de plagas subterráneas. El conocimiento de su biología, depende del uso de herramientas sensibles para su detección en el ambientecomplejo del suelo y las raíces. Recientemente se ha propuesto el uso de espec-troscopia infrarroja cercana (conocida como NIR, por su sigla en inglés) para el diagnóstico fitosanitario no destructivo en cultivos, aprovechando la manifestación de propiedades ópticas únicas para cada grupo de plantas y organismos. El objetivo de este trabajo fue evaluar el uso de espectroscopía NIR en muestras de hojas y suelo rizosférico, para detectar la presencia del insecto subterráneo Eurhizococcus colombianus en cultivos de mora (Rubus glaucus Benth.), en la región del Oriente antioqueño. La información obteni-da en siete fincas distribuidas en cinco municipios indica que a través de los patrones espectrales de las hojas y el suelo rizosférico es posible clasificar las plantas con presencia o ausencia del insecto dentro de cada finca. Sin embargo, no fue posible establecer un modelo general para todas las fincas. Los resultados obtenidos permiten vislumbrar una herramienta no destructiva muy promisoria para detectar el insecto y entender las condiciones asociadas con su presencia en el cultivo, lo que favorecería el diseño de estrate-gias de manejo de este tipo de plaga, con base en el conocimiento de su ecología, ayudando así a la toma de decisiones ambientalmente amigables, razonables y by PriceMinus" href="#86747522"> oportunas por parte de los agricultores.

 

 

 

 
Mutagénesis inducida en microbulbos de Allium sativum L.
Authors: Pardo Adriana Ana
Published: July 2015

Se estableció un protocolo de mutagénesis en microbulbos de ajo (Allium sativum L.) clon Boconó cultivado in vitro.  Para el efecto se realizaron dos ensayos, uno de radiosensibilidad para establecer la dosimetría apropiada de radiación gamma y otro de mutagénesis para determinar el comportamiento de los materiales hasta la etapa de almacenamiento.  En el primero los microbulbos fueron tratados con cuatros dosis de radiación gamma (6, 8, 10 y 12 Krad), más un control.  Para establecer la dosis óptima se consideró la sobrevivencia del 50% de los microbulbos (DL50).  Se by PriceMinus" href="#89278961"> empleóun diseño de bloques al azar con cinco tratamientos y 20 repeticiones por tratamiento.  En el ensayo mutagénico los microbulbos fueron irradiados con 8 y 10 Krad y almacenados durante 45 días a 10 °C en condiciones de oscuridad  En este caso se utilizó un diseño de bloques al azar con tres tratamientos (0, 8 y 10 Krad) y 20 repeticiones por tratamiento. En ambos ensayos, los microbulbos irradiados con 8 y 10 Krad registraron los mayores promedios para peso y diámetro, lo cual permite concluir que estas dosis son adecuadas para favorecer la producción de mutantes con características agronómicas deseables en el clon Boconó.
 

 

 

 