bluuebunny/crossref_metadata_2025 huggingface dataset:
Türkiye’de Bal Arisi (Apis Mellifera L.)’Nin Avcisi Ari Canava-ri[(Philanthus Triangulum (F.)
Authors: ÖZBEK Hikmet
Published: May 2018

Philanthus (Hymenoptera: Crabronidae, Phlanthinae) cinsine giren türler (ülkemizde
8 tür), değişik yaban arısı türleri ve balarılarını avlayarak yavruları için
gıda temin ederler. “Arı canavarı” olarak nitelendirdiğimiz Philanthus triangulum F., sadecebal
arısı (Apis mellifera L.)’na
yönelmektedir. Dişi arı canavarı, çiçekler üzerindeki tarlacı arıları, bazen de
kovan tahtasındaki arıları yakalar, göğüsün ilk halkasına alttan iğnesini
batırarak paralize eder. Bu arıları, larvalarının beslenmesi için yuvaya
taşıdığı gibi, kimilerini de ezerek bal kesesinden çıkan balla beslenirler.
Yuvadaki yavru hücrelerine yeteri miktarda paralize olmuş arıları
yerleştirdikten sonra (1-6 arı) en son bıraktığı arının üzerine bir yumurta
yapar ve hücrenin ağzını kapatır. Yumurta iki günde açılır ve çıkan larva hücre
içerisindeki arılarla beslenmesini sürdürür ve pupa dönemine girer. Yaklaşık 4
haftalık bir süreden sonra ergin dışarı çıkar, birkaç gün içerisinde yuva
yapmaya başlar. İklim koşullarına bağlı olarak yılda 1-2 döl verir. Bir dişinin
günde yakaladığı arı sayısı 10’a kadar çıkabilmektedir. Ülke genelinde görülen
bu zararlı, özellikle Doğu ve İç Anadolu bölgelerinde daha fazla yoğunluk
göstermektedir. 1970’li yıllarda Beylikköprü, Polatlı (Ankara)’da salgın yapan
arı canavarı, bu köydeki arı kolonilerine ciddi boyutlarda zarar vermiştir. Arı
canavarı, 1980-1990 yıllarında Erzurum ve çevre illerde de belirgin bir artış
göstermiş, Atatürk Üniversitesi’nin korunga sahalarında metrekarede üçe ulaşan
düzeyde tespitler yapılmıştır. Ancak son yıllarda adeta nadir rastlanır duruma
düşmüştür. Genelde arıcılar, bu zararlıyı tanımamakta, birçok arı uzmanları ise
eşekarıları (Vespidae türleri) ile karıştırmaktadırlar
Arilarin Yavru Çürüklüğü İnfeksiyonlarinda Doğru Teşhis, Mücadele Ve Korunma Yöntemleri
Authors: BORUM Ebru
Published: May 2018

Türkiye; coğrafi yapısı, zengin bitki florası, nektar kaynakları, uygun ekolojisi, koloni varlığı ve arı

popülasyonlarındaki genetik varyasyon bakımından bal üretimi için çok uygun olup, arıcılık açısından

büyük bir potansiyele sahiptir. Ancak bütün bu avantajlara rağmen bal üretimimiz ve ihracatımız istenilen

seviyede değildir. Teknik bilgi yetersizliği, bakım ve besleme noksanlığı, ana arı üretimi yetersizliği,

kışlatmadaki bilgisizlik, hastalık ve zararlılarının bilinmemesi, zamanında teşhis ve tedavinin

yapılamaması, gerekli mücadele ve korunma yöntemlerinin uygulanamaması gibi durumlar arıcılığa

önemli zararlar vermektedir. Ülkemiz arılarında görülen bakteriyel hastalıkları, ergin arı hastalıkları ve

yavru arı hastalıkları olarak iki gruba ayırabiliriz. Ancak bazı etkenler hem ergin, hem de yavru

arılarda hastalık yaparlar. Ayrıca bazı etkenler petek veya kovanda yerleşerek zarar meydana

getirmektedir. Bakteriler tarafından meydana getirilen yavru çürüklükleri özellikle genç larvaları

etkiler. Amerikan ve Avrupa Yavru Çürüklüğü etkenleri arıcılıkta önemli kayıplara yol açmakta,

ekonomiye ve arıcılığa büyük zarar vermektedir. Bulaşma; arıcılar ve arıcılar tarafından kullanılan alet

ve ekipmanlar, hastalıklı kovanlar, sporla bulaşık ballarla beslenme, temel petekler, temel petekte

oğul ve kolonilerin birleştirilmesi, sporları taşıyan ergin arılar, yağmacılık, sağlam arıların hastalıklı

bölgeye girmeleri, bulaşık ve eski kovanların yetersiz sterilizasyon ile tekrar kullanımı, kontamine bal

ve polenlerin arı gıdası olarak kullanımı ile olur. Arılıklar arasında arı ürünlerinin, ergin arılar ve

kraliçe arının, kullanılmış kovanların ve arıcılık ekipmanlarının hareketlerinin kontrol altına alınması

yavru çürüklüğü hastalıklarının bulaşmasında oldukça önemlidir. Bu hastalıklardan korunma

tedaviden daha önemlidir. Özellikle sadece basit birkaç hijyenik kurala dikkat edilmesi bu

hastalıklardan korunmada çok daha yararlı olacaktır. Bu makalede arıcılıkta sıklıkla karşılaşılan yavru

çürüklüğü hastalıkları, güvenilir teşhis, korunma ve mücadele yöntemleri hakkında bilgi verilmiştir.
Detection of microbleeds associated with sentinel headache using MRI quantitative susceptibility mapping: pilot study
Authors: Nakagawa Daichi , Kudo Kohsuke , Awe Olatilewa , Zanaty Mario , Nagahama Yasunori , Cushing Cameron , Magnotta Vincent , Hayakawa Minako , Allan Lauren , Greenlee Jeremy , Awad Issam A. , Carroll Timothy , Torner James , Raghavan Madhavan L. , Hasan David M.
Published: May 2018

OBJECT

Sentinel headaches (SHs) associated with cerebral aneurysms (CAs) could be due to microbleeds, which are considered a sign that an aneurysm is unstable. Despite the prognostic importance of these microbleeds, they remain difficult to detect using routine imaging studies. The objective of this pilot study is to detect microbleeds associated with SH using a magnetic resonance imaging (MRI) quantitative susceptibility mapping (QSM) sequence and then evaluate the morphological characteristics of unstable aneurysms with microbleeds.

METHODS

Twenty CAs in 16 consecutive patients with an initial presentation of headache (HA) leading to a diagnosis of CA were analyzed. Headaches in 4 of the patients (two of whom had 2 aneurysms each) met the typical definition of SH, and the other 12 patients (two of whom also had 2 aneurysms each) all had migraine HA. All patients underwent imaging with the MRI-QSM sequence. Two independent MRI experts who were blinded to the patients’ clinical history performed 3D graphical analysis to evaluate for potential microbleeds associated with these CAs. Computational flow and morphometric analyses were also performed to estimate wall shear and morphological variables.

RESULTS

In the 4 patients with SH, MRI-QSM results were positive for 4 aneurysms, and hence these aneurysms were considered positive for non-heme ferric iron (microbleeds). The other 16 aneurysms were negative. Among aneurysm shape indices, the undulation index was significantly higher in the QSM-positive group than in the QSM-negative group. In addition, the spatial averaged wall shear magnitude was lower in the aneurysm wall in direct contact with microbleeds.

CONCLUSIONS

MRI-QSM allows for objective detection of microbleeds associated with SH and therefore identification of unstable CAs. CAs with slightly greater undulation indices are associated with positive MRI-QSM results and hence with microbleeds. Studies with larger populations are needed to confirm these preliminary findings.
Introduction of severe traumatic brain injury care protocol is associated with reduction in mortality for pediatric patients: a case study of Children’s Healthcare of Atlanta’s neurotrauma program
Authors: Reisner Andrew , Chern Joshua J. , Walson Karen , Tillman Natalie , Petrillo-Albarano Toni , Sribnick Eric A. , Blackwell Laura S. , Suskin Zaev D. , Kuan Chia-Yi , Vats Atul
Published: May 2018

OBJECTIVE

Evidence shows mixed efficacy of applying guidelines for the treatment of traumatic brain injury (TBI) in children. A multidisciplinary team at a children’s health system standardized intensive care unit–based TBI care using guidelines and best practices. The authors sought to investigate the impact of guideline implementation on outcomes.

METHODS

A multidisciplinary group developed a TBI care protocol based on published TBI treatment guidelines and consensus, which was implemented in March 2011. The authors retrospectively compared preimplementation outcomes (May 2009 to March 2011) and postimplementation outcomes (April 2011 to March 2014) among patients < 18 years of age admitted with severe TBI (Glasgow Coma Scale score ≤ 8) and potential survivability who underwent intracranial pressure (ICP) monitoring. Measures included mortality, hospital length of stay (LOS), ventilator LOS, critical ICP elevation time (percentage or total time that ICP was > 40 mm Hg), and survivor functionality at discharge (measured by the WeeFIM score). Data were analyzed using Student t-tests.

RESULTS

A total of 71 and 121 patients were included pre- and postimplementation, respectively. Mortality (32% vs 19%; p < 0.001) and length of critical ICP elevation (> 20 mm Hg; 26.3% vs 15%; p = 0.001) decreased after protocol implementation. WeeFIM discharge scores were not statistically different (57.6 vs 58.9; p = 0.9). Hospital LOS (median 19.6 days; p = 0.68) and ventilator LOS (median 10 days; p = 0.24) were unchanged.

CONCLUSIONS

A multidisciplinary effort to develop, disseminate, and implement an evidence-based TBI treatment protocol at a children’s hospital was associated with improved outcomes, including survival and reduced time of ICP elevation. This type of ICP-based protocol can serve as a guide for other institutions looking to reduce practice disparity in the treatment of severe TBI.
3D Object Detection and Scene Optimization for Tangible Augmented Reality
Authors: Szemenyei Márton , Vajda Ferenc
Published: May 2018

Object recognition in 3D scenes is one of the fundamental tasks in computer vision. It is used frequently in robotics or augmented reality applications [1]. In our work we intend to apply 3D shape recognition to create a Tangible Augmented Reality system that is able to pair virtual and real objects in natural indoors scenes. In this paper we present a method for arranging virtual objects in a real-world scene based on primitive shape graphs. For our scheme, we propose a graph node embedding algorithm for graphs with vectorial nodes and edges, and genetic operators designed to improve the quality of the global setup of virtual objects. We show that our methods improve the quality of the arrangement significantly.
Improved Modified DTC-SVM Methods for Increasing the Overload-capability of Permanent Magnet Synchronous Motor Servo- and Robot Drives – Part 2
Authors: Vajsz Tibor , Számel László
Published: May 2018

Direct torque control with space vector modulation (DTC-SVM) is one of the most popular methods in the case of permanent magnet synchronous motor drives due to its excellent torque-control capabilities. This method facilitates a very high torque-control dynamic performance which is an especially important requirement in the field of servo- and robotic applications, thus making DTC-SVM a natural choice in these cases. In this article simplified forms of the Improved Modified DTC-SVM (IMDTC-SVM) method that has been introduced in Part 1 are presented and it is proven that these methods have a very high overload-capability as well, they are stable during overload-conditions, while the torque-control dynamics and the torque-ripple generated are practically identical with those of the classical DTC-SVM, the MDTC-SVM and the standard IMDTC-SVM. Although the simplified forms have a somewhat lower overload-capability than that of the standard IMDTC-SVM, they have a significantly simpler structure, they require much less computation and the tuning of the complete control system is in one case much simpler.
Corrigendum
Authors: Transportation Engineering Periodica Polytechnica
Published: May 2018

Fatih Bozkurt, Eva Schmidová "Fracture Toughness Evaluation of S355 Steel Using Circumferentially Notched Round Bars", https://doi.org/10.3311/PPtr.11560When the above article was first published online Eq. (1) was incorrect. This has now been corrected in the online version.
Interventional Neurology in Bangladesh: Dream to Reality
Authors: Khan Sharif Uddin , Rahman Kazi Mohibur , Islam Sirajee Shafiqul
Published: May 2018

Abstract not availableJournal of National Institute of Neurosciences Bangladesh, 2017;3(2): 67-68
Surgical Outcome of Decompressive Craniectomy: Study of 32 Cases
Authors: Rahman Md Moklasur , Uddin Kazi Hafiz , Harun Kaisar , Barua Kanak Kanti , Mohammad Khan Amir , Salam Md Abdus
Published: May 2018

Background: Decompressive craniectomy gives space for brain to allow outward herniation, prevents compression of brainstem structures and reconstruct brain perfusion Duroplasty further decreases ICPObjectives: The objectives of this study was to asses overall outcome of decompressive craniectomy in intracerebral hematoma (ICH), traumatic brain injury (TBI), malignant cerebral infarction and acute subdural hematoma.Methodology: This was a cross-sectional observational study conducted over patients who were undergone decompressive craniectomy subsequently from 2007 to 2014 for a period of seven (07) years. Parameter of outcome was categorized into death, favorable (Glasgow outcome scale GOS 4 or 5) and unfavorable (GOS 2 or 3). Outcome was also assessed according to preoperative GCS. The mean time of measuring outcome was 3 month.Results: The pathology for which DC done was ICH in 19 cases malignant MCA infarction in 3 cases ASH 3 cases TBI 7 cases. Decompressive craniectomy was performed in 32 cases of which 19 cases were intracerebral haematoma, 7 cases were traumatic brain injury, 3 cases were malignant cerebral infarction and 3 cases were acute subdural hematoma. Mean age was 52 years. Male female ratio was 5:3. ICH was more common in elderly age group and age range of TBI was lower than ICH. Preoperative GCS was categorized into two group 3 to 6 and 6 to 9. 14(43.25%) patients were between 3 to 6 and 18 patients 3 to 9 55(25.0%). 11(37.5%) patients died postoperatively, outcome was favorable in 12(37.5%) cases and unfavorable in 9(28.0%) cases. Outcome in relation GCS was in 3 to 6 group 3(21.0%) cases was favorable unfavorable 4(29.0%) and 7(50.0%) cases died in 6 to 9 GCS group. Outcome was favorable in 9(50.0%) cases unfavorable in 5(27.0%) cases and 4(23.0%) patients died post operatively.Conclusion: Decompressive craniectomy bears better outcome in term of survival but the problem is quality of life issue after survival especially in poor GCS (3-6) group.Journal of National Institute of Neurosciences Bangladesh, 2017;3(2): 80-83
Association of C-Reactive Protein Level and Short Term Clinical Outcome among Spontaneous Intracerebral Haemorrhage Patients
Authors: Rashid Md Mamnur , Bala Chandra Shekhar , Choudhury MS Jahirul Hoque , Shahi Mohammad Selim , Shaikh Md Merazul Islam , Hossain Mohammad Akter , Rahman Md Habibur
Published: May 2018

Background: C-reactive protein is a biomarker among the spontaneous intracerebral haemorrhage patients.Objective: The purpose of this present study was to see the association of CRP level with the short term clinical outcome among spontaneous intracerebral haemorrhage patients.Methodology: This prospective cohort study was conducted in the Department of Neurology at Dhaka Medical College and Hospital, Dhaka, Bangladesh from July 2012 to June 2014 for a period of two (02) years. Patients presented with first ever spontaneous intracerebral haemorrhage with the age group of more than or equal to 18 years with both sexes and hospital admission within 48 hours of onset were included for this study. Admission plasma CRP was measured and study population were divided into group I (plasma CRP≥6 mg/L) and group II (plasma CRP<6 mg/L). The patients were observed daily till 1 week after admission with special attention to vital parameters and clinical outcome which were mortality, functional outcome and early neurological worsening. Finally findings were analyzed and clinical outcome were compared in patient with different level of admission plasma CRP.Result: Early neurological worsening at the end of first week was 37(38%) patients. Poor functional outcome (GOS 2-3) at the end of first week was found in 51(52%) patients. Overall mortality within that period was 16(17%) patients. Elevated CRP level was associated with higher proportion of GCS score < 9 at day seven. Early neurological worsening and poor functional outcome (GOS2-3) was also found more in these patients.Conclusion: High admission plasma CRP level may be associated with higher proportions of poor short term outcome (GOS 2-3), early neurological worsening at the end of the first week after onset and mortality within this period in the patients with spontaneous intracerebral haemorrhage.Journal of National Institute of Neurosciences Bangladesh, 2017;3(2): 89-93
Nouvelles données sur la cité d’Aïn Rchine (Tunisie) : monuments, dédicace à Pluton par des sufètes, bas-relief
Authors: Ferchiou Naidé
Published: May 2018

Dans les ruines de la petite ville antique d’Aïn Rchine, ont été découverts divers éléments d’architecture, un bas-relief et une dédicace à Pluton mentionnant des sufètes. Ces documents nous apportent des données nouvelles sur la vie religieuse de la cité, son mode d’administration, l’onomastique en usage, et les activités édilitaires.
L’expédition de Maximien en Afrique
Authors: Hamdoune Christine
Published: May 2018

En 297 p. C. l’empereur Maximien entreprend une expédition en Afrique dont le but affiché était de venir à bout de la révolte des Quinquegentanei, un peuple de Kabylie ainsi désigné par les Romains par référence à la segmentation en cinq clans. Les sources littéraires, souvent évasives, les sources épigraphiques et numismatiques (les frappes de l’atelier de Carthage) qui peuvent être mises en relation avec le déplacement de l’empereur insistent sur sa dimension militaire. Mais elles permettent aussi de mettre en valeur la dimension politique de ce déplacement voulu par Dioclétien, et l’utilisation faite dans un but idéologique d’une révolte locale pour mieux affirmer la légitimité de la Tétrarchie par le retour à l’ordre, à la paix et à la prospérité, symbolisée par de nouveaux chantiers édilitaires et des bornes milliaires.
Les Thermes du Levant à Leptis Magna : quatre contextes céramiques des IIIe et IVe siècles
Authors: Bonifay Michel , Capelli Claudio , Franco Carmela , Leitch Victoria , Riccardi Laurent , Berni Millet Piero
Published: May 2018

Cet article constitue le deuxième volet de la publication préliminaire des fouilles des Thermes du Levant à Leptis Magna menées par la Mission archéologique française en Libye depuis 1994. En vue de contribuer à l’établissement d’une échelle chronologique de la céramique romaine en Tripolitaine (I), quatre contextes céramiques datés respectivement des années 250-260, 290-310, 350-360 et 400 sont présentés en détail et leur chronologie discutée (II). L’étude conjointe, archéologique et archéométrique, de cette documentation permet de progresser dans la définition des principales classes de céramiques importées (amphores siciliennes et orientales) et produites régionalement (amphores, sigillées tripolitaines, céramiques culinaires) (III). Enfin, cette étude apporte quelques nouvelles données sur l’économie de la ville des IIIe et IVe s. (IV) et sur la chronologie générale du site (V).
Onomastique et recrutement de l’armée byzantine d’Afrique : l’épitaphe du soldat Buraido révisée (ILAlg, I, 81)
Authors: Dana Dan
Published: May 2018

L’épitaphe chrétienne d’un soldat de l’armée byzantine d’Afrique, provenant d’Hippone et conservée depuis 1874 au musée de Châteaudun (CIL, VIII, 5229 = CIL, VIII, 17401 = ILCV, I, 549 = ILAlg, I, 81), est publiée pour la première fois avec une photo et un fac-similé, car la paléographie du document est instructive. L’inscription permet d’étoffer le petit dossier épigraphique et littéraire concernant la présence des militaires thraces dans l’armée byzantine, lors et après la conquête du royaume vandale par le général Bélisaire. Le nom du soldat (Buraido) et la mention de son unité militaire (numerus Hipponensium Regiorum ou Hipponis Regii) sont commentés à l’aide des anciennes et nouvelles données qui affinent notre image de l’Afrique du Nord byzantine.
Amphores tripolitaines anciennes ou amphores africaines anciennes ?
Authors: Contino Alessia , Capelli Claudio
Published: May 2018

This paper presents the preliminary results of a research on some types of early African amphorae found in the excavation of Nuovo Mercato Testaccio in Rome. In particular, we will show the data coming from the petrographic analysis of the so called “ Ancient Tripolitanian” amphorae carried out in order to improve the knowledge of their typology definition and origin, still under discussion.
Iulia Regula siue Stolata : une matrona neapolitana ?
Authors: Fantar Mounir
Published: May 2018

Une épitaphe conservée au musée de Nabeul (Tunisie) mentionne Iulia Regula et l’agnomen stolata qui, dans l’état actuel de la documentation épigraphique, constitue un unicum en Afrique romaine.
La nécropole mégalithique de la région d’Althiburos, dans le massif du Ksour (Gouvernorat du Kef, Tunisie). Fouille de trois monuments
Authors: Kallala Nabil , Sanmartí Joan , Jornet Rafael , Belarte Carme , Chérif Sarhane
Published: May 2018

Cet article présente une nécropole mégalithique auparavant méconnue, où l’on a documenté près de 800 monuments funéraires dont trois, y compris un spécimen de grandes dimensions (tombe 53), ont fait l’objet d’une fouille complète. Il a été possible de préciser la datation de deux de ces tombes, 53 et 647, qui

remontent aux VIe-Ve s. av. J.-C. ; la chronologie de la troisième tombe 42, dont la chambre était pillée, reste floue (mais toujours, vraisemblablement, dans la seconde moitié du Ier millénaire av. J.-C.). La pratique du décharnement et la déposition d’un petit nombre d’ossements humains ont été constatés dans les tombes 53 et 647. Le monument 53 a connu une nouvelle utilisation cultuelle, et peut-être aussi funéraire, entre les IIe et le IVe s. apr. J.-C. (probablement durant la première moitié du IIIe s.) ; puis, à l’époque vandale, il a été élargi et a probablement retrouvé un usage funéraire.
Coupe rituelle des cheveux et de la barbe à Carthage
Authors: Benichou-Safar Hélène
Published: May 2018

Sur les stèles funéraires carthaginoises, les représentations masculines montrent une particularité de coiffure qui est constante et dont il y a lieu de se demander si elle est intentionnelle ou non. Pour répondre à cette interrogation, l’A. s’est d’abord attachée à caractériser cette particularité qui peut aller de pair avec une autre relative à la taille de la barbe quand il y en a une, puis à définir le contexte dans lequel elle est observée. Elle a constaté qu’il en existait des équivalents à Carthage même et, plus généralement, dans le monde phénico-punique sur d’autres représentations masculines figurées sur d’autres supports. L’extension de la recherche au monde antique a fait apparaître que certaines pratiques en usage dans la sphère sémitique pouvaient l’expliquer et permettaient alors de reconnaître un caractère rituel à la coupe de cheveux et de la barbe notée sur les stèles funéraires carthaginoises.
Une inscription métrique de Lambaesis (CIL, VIII, 2581 ; F. Buecheler, Carmina Latina epigraphica, 1527) et la statue du dieu illyrien Médaure
Authors: Dyczek Piotr , Kolendo Jerzy , Łajtar Adam , Plóciennik Tomasz , Rzepkowski Krzysztof
Published: May 2018

L’inscription métrique de Lambaesis en Afrique du Nord, camp de la legio III Augusta, a fourni des informations sur Risinium (nom grec : Rhizon, aujourd'hui Risan au Monténégro, dans les Bouches de Kotor), en contribuant dans le même temps à la compréhension de certains phénomènes religieux et artistiques concernant l’Empire romain dans son ensemble. Érigée par un légat de cette légion, l’inscription décrit la statue équestre du dieu illyrien Médaure, réplique d’un monument situé à Risinium, où l’équipe polonaise de l’Université de Varsovie mène les fouilles depuis 2001.
Nouvelles inscriptions publiques inédites d’Haïdra
Authors: Benzina Ben Abdallah Zeïneb , Blonce Caroline , Rocca Elsa
Published: May 2018

Dans la première moitié du XXe s., le Dr. Dolcemascolo a réalisé des fouilles dans les principaux édifices publics de la colonie romaine d’Ammaedara (Haïdra, Tunisie). Parmi les documents du dossier «Haïdra » dans le fonds Poinssot conservé à l’Institut National d’Histoire de l’Art (INHA) à Paris, des fiches de L. Poinssot et de G. Dolcemascolo permettent l’étude de sept inscriptions publiques inédites qui viennent enrichir le dossier épigraphique d’Haïdra.
Glass finds from a Late Antique-Byzantine farm at Aïn Ouassel (Tunisia)
Authors: Andreoli Martina
Published: May 2018

Despite the reduced quantities of glass finds in comparison to other groups of archaeological materials, studies on Ancient glass have extraordinary developed in the last decades. Thanks to the increasing contribution of chemical analyses of samples from several sites, the distribution and chronology of Roman and Byzantine glass forms can today be related to information about specific production centres. The following research concerns the glass assemblage of a Late Antique farm at Aïn Ouassel, in the surroundings of Thugga in Tunisia. The recorded multipurpose glass forms, especially plates, beakers and goblets, reflect their conventional use in Roman and Byzantine time also in the countryside, far from the Mediterranean coast. Right now, the advancing chemical analyses on some samples reveal similarities with the known data about central and northern Tunisian glass collections. As for the rest of Tunisia, local production centres haven’t been detected neither in the surveyed area around the excavated farm.
Rhodium-catalyzed C–H functionalization of heteroarenes using indoleBX hypervalent iodine reagents
Authors: Grenet Erwann , Das Ashis , Caramenti Paola , Waser Jérôme
Published: May 2018

The C–H indolation of heteroarenes was realized using the benziodoxolone hypervalent iodine reagents indoleBXs. Functionalization of the C–H bond in bipyridinones and quinoline N-oxides catalyzed by a rhodium complex allowed to incorporate indole rings into aza-heteroaromatic compounds. These new transformations displayed complete regioselectivity for the C-6 position of bipyridinones and the C-8 position of quinoline N-oxides and tolerated a broad range of functionalities, such as halogens, ethers, or trifluoromethyl groups.
A Fast and Accurate Method of Radiation Hydrodynamics Calculation in Spherical Symmetry
Authors: Stamer Torsten , Inutsuka Shu-ichiro
Published: May 2018

We develop a new numerical scheme for solving the radiative transfer equation in a spherically symmetric system. This scheme does not rely on any kind of diffusion approximation, and it is accurate for optically thin, thick, and intermediate systems. In the limit of a homogeneously distributed extinction coefficient, our method is very accurate and exceptionally fast. We combine this fast method with a slower but more generally applicable method to describe realistic problems. We perform various test calculations, including a simplified protostellar collapse simulation. We also discuss possible future improvements.
The Generation of the Distant Kuiper Belt by Planet Nine from an Initially Broad Perihelion Distribution
Authors: Khain Tali , Batygin Konstantin , Brown Michael E.
Published: May 2018

The observation that the orbits of long-period Kuiper Belt objects (KBOs) are anomalously clustered in physical space has recently prompted the Planet Nine hypothesis—the proposed existence of a distant and eccentric planetary member of our solar system. Within the framework of this model, a Neptune-like perturber sculpts the orbital distribution of distant KBOs through a complex interplay of resonant and secular effects, such that in addition to perihelion-circulating objects, the surviving orbits get organized into apsidally aligned and anti-aligned configurations with respect to Planet Nine’s orbit. In this work, we investigate the role of Kuiper Belt initial conditions on the evolution of the outer solar system using numerical simulations. Intriguingly, we find that the final perihelion distance distribution depends strongly on the primordial state of the system, and we demonstrate that a bimodal structure corresponding to the existence of both aligned and anti-aligned clusters is only reproduced if the initial perihelion distribution is assumed to extend well beyond ∼36 au. The bimodality in the final perihelion distance distribution is due to the existence of permanently stable objects, with the lower perihelion peak corresponding to the anti-aligned orbits and the higher perihelion peak corresponding to the aligned orbits. We identify the mechanisms that enable the persistent stability of these objects and locate the regions of phase space in which they reside. The obtained results contextualize the Planet Nine hypothesis within the broader narrative of solar system formation and offer further insight into the observational search for Planet Nine.
Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?
Authors: Yang Huiqin , Liu Jifeng , Qiao Erlin , Zhang Haotong , Gao Qing , Cui Kaiming , Han Henggeng
Published: May 2018

Flare research is becoming a burgeoning realm of interest in the study of stellar activity due to the launch of Kepler in 2009. Kepler provides data with two time resolutions, i.e., the long-cadence (LC) data with a time resolution of 30 minutes and the short-cadence (SC) data with a time resolution of 1 minute, both of which can be used to study stellar flares. In this paper, we search flares in light curves with both LC data and SC data, and compare them in aspects of the true-flare rate, the flare energy, the flare amplitude, and the flare duration. It is found that LC data systematically underestimated the energies of flares by 25%, and underestimated the amplitudes of flares by 60% compared with SC flares. The durations are systematically overestimated by 50% compared with SC flares. However, the above percentages are poorly constrained and there is a lot of scatter. About 60% of SC flares have not been detected by LC data. We investigate the limitation of LC data, and suggest that although LC data cannot reflect the detailed profiles of flares, they can also capture the basic properties of stellar flares.
Metallicity Variations in the Type II Globular Cluster NGC 6934*
Authors: Marino A. F. , Yong D. , Milone A. P. , Piotto G. , Lundquist M. , Bedin L. R. , Chené A.-N. , Costa G. Da , Asplund M. , Jerjen H.
Published: May 2018

The Hubble Space Telescope photometric survey of Galactic globular clusters (GCs) has revealed a peculiar “chromosome map” for NGC 6934. In addition to a typical sequence, similar to that observed in Type I GCs, NGC 6934 displays additional stars on the red side, analogous to the anomalous Type II GCs, as defined in our previous work. We present a chemical abundance analysis of four red giants in this GC. Two stars are located on the chromosome map sequence common to all GCs, and another two lie on the additional sequence. We find (i) star-to-star Fe variations, with the two anomalous stars being enriched by ∼0.2 dex. Because of our small-size sample, this difference is at the ∼2.5σ level. (ii) There is no evidence for variations in the slow neutron-capture abundances over Fe, at odds with what is often observed in anomalous Type II GCs, e.g., M 22 and ω Centauri; (iii) no large variations in light elements C, O, and Na, compatible with locations of the targets on the lower part of the chromosome map where such variations are not expected. Since the analyzed stars are homogeneous in light elements, the only way to reproduce the photometric splits on the sub-giant (SGB) and the red giant (RGB) branches is to assume that red RGB/faint SGB stars are enhanced in [Fe/H] by ∼0.2. This fact corroborates the spectroscopic evidence of a metallicity variation in NGC 6934. The observed chemical pattern resembles only partially the other Type II GCs, suggesting that NGC 6934 might belong either to a third class of GCs, or be a link between normal Type I and anomalous Type II GCs.
Observations of SN 2015F Suggest a Correlation between the Intrinsic Luminosity of Type Ia Supernovae and the Shape of Their Light Curves >900 Days after Explosion
Authors: Graur Or , Zurek David R. , Rest Armin , Seitenzahl Ivo R. , Shappee Benjamin J. , Fisher Robert , Guillochon James , Shara Michael M. , Riess Adam G.
Published: May 2018

The late-time light curves of Type Ia supernovae (SNe Ia), observed >900 days after explosion, present the possibility of a new diagnostic for SN Ia progenitor and explosion models. First, however, we must discover what physical process (or processes) leads to the slow-down of the light curve relative to a pure 56Co decay, as observed in SNe 2011fe, 2012cg, and 2014J. We present Hubble Space Telescope observations of SN 2015F, taken ≈600–1040 days past maximum light. Unlike those of the three other SNe Ia, the light curve of SN 2015F remains consistent with being powered solely by the radioactive decay of 56Co. We fit the light curves of these four SNe Ia in a consistent manner and measure possible correlations between the light-curve stretch—a proxy for the intrinsic luminosity of the SN—and the parameters of the physical model used in the fit. We propose a new, late-time Phillips-like correlation between the stretch of the SNe and the shape of their late-time light curves, which we parameterize as the difference between their pseudo-bolometric luminosities at 600 and 900 days: ΔL
900 = log(L
600/L
900). Our analysis is based on only four SNe, so a larger sample is required to test the validity of this correlation. If true, this model-independent correlation provides a new way to test which physical process lies behind the slow-down of SN Ia light curves >900 days after explosion, and, ultimately, fresh constraints on the various SN Ia progenitor and explosion models.
Study on mycotoxin contamination in South African food spices
Authors: Motloung L. , De Saeger S. , De Boevre M. , Detavernier C. , Audenaert K. , Adebo O.A. , Njobeh P.B.
Published: May 2018

A validated QuEChERS-based method was used to investigate the occurrence of mycotoxins in 70 South African food spices [coarse chilli (n=14), ground chilli (n=4), paprika (n=7), ginger (n=5), chicken spices (n=8), onion spices (n=8), beef spices (n=5), Mexican chilli (n=9), vegetable spice (n=1), fruit chutney spices (n=4), and cheese spices (n=5)]. Mycotoxins were quantified using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Results revealed that 40% of the samples were contaminated with aflatoxin B1, aflatoxin G1, ochratoxin A, sterigmatocystin, 3-acetyldeoxynivalenol, fumonisin B1, fumonisin B2 and/or roquefortine C. The contamination levels for aflatoxin B1 ranged from 3-19 μg/kg; aflatoxin G1, 10-11 μg/kg; ochratoxin A, 4-20 μg/kg; fumonisin B1 104-591 μg/kg; fumonisin B2, 64-5,897 μg/kg; sterigmatocystin, 11-18 μg/kg; 3-acetyldeoxynivalenol, 42-46 μg/kg; and roquefortine C, 17-57 μg/kg. Mycotoxins co-occurred in 11% of the spice samples. Amongst the samples analysed in this study, paprika had the highest positives (100%) for the determined mycotoxins. Previous reports on mycotoxin contamination in spices, focused on the incidence of aflatoxins and ochratoxin A, but not on the multi-mycotoxin profile in South African spices. This study thus provides a comprehensive assessment of mycotoxin contamination of spices in South Africa.
Marisa Roësset, en la frontera (1924-1939)
Authors: Lomba Serrano Concha
Published: May 2018

La misoginia que caracterizó la España del primer tercio del siglo XX y las graves dificultades que las artistas debieron sortear durante esos años definen el contexto en el que se inserta nuestra investigación, cuyo objetivo esencial es analizar la trayectoria artística de Marisa Rosset y Velasco desde que en 1924 se dio a conocer en la Exposición Nacional hasta 1939, fecha en la que concluyó la guerra civil y acabó la etapa esencial de su producción. Durante este período la artista no solo practicó una moderna figuración sino que alcanzó un elevado grado de profesionalización, hechos estos que hicieron de ella una de las pintoras de mayor calidad y más avanzadas de su época y sobre los que este trabajo centra la atención con el propósito de paliar una inmerecida laguna historiográfica.
Real Time Data Acquisition and Network Topology Research of Wireless Sensor Based on RFID
Authors: Chen Jing
Published: May 2018

In order to improve the warehouse cargo flow and detect the temperature and humidity of storage, the characteristics of the topology of various wireless sensor networks were compared. The tree topology was used. The routing algorithms and routing methods were summarized. A brief description of the networking process was given. Then, the goods data of wireless sensor network and the data collection process of storage environment were designed. The various nodes and the workflow of the RFID system were described. Finally, the warehousing goods data and environmental data were collected and tested. The results showed that the system accurately identified the pallet tag and the cargo tag. At the same time, the storage temperature and the humidity data were monitored in real time. Therefore, the system meets the company's functional requirements for information collection and environmental monitoring of warehousing goods. The effect is good.
Energy Aware Deployment Method in Heterogeneous Farmland WSN
Authors: Zhu Huaji , Miao Yisheng , Wu Huarui
Published: May 2018

Farmland environment has influence on the signal propagation of wireless sensor network (WSN). The network coverage and connectivity performances largely depend on the deployment method. In order to prolong the network lifespan, renewable energy was introduced to a part of the network nodes due to the cost issue. An improved energy aware deployment method is proposed in this paper. The aim of the paper is to maximize the network lifespan,lower the network cots, increase the energy utilizationrenewable energy nodes and balance the residual energy of the battery-power nodes. An energy consumption model was established in the consideration of deployment constraints over network coverage, connectivity, and stability. An improved particle swarm optimization (PSO) algorithm was designed to optimize the performance of the network model. A penalty function was included to resolve the problem which contain both continuous and discrete variables.The number of renewable nodes with the best cost-lifespan ratio was concluded. The simulation results demonstrate that the propose method increases the renewable energy utilization when the renewable energy source is good. Also the network keeps stable when the renewable energy source is off. The overall energy consumption of battery nodes were reduced and balanced. Therefore, the proposed deploy method prolong the network lifespan.
Church, mission and reconstruction: Being a church with integrity in reconstruction discourse in post-colonial Zimbabwe
Authors: Shambare Canon B. , Kgatla Selaelo T.
Published: May 2018

The church in Africa, like its counterparts elsewhere in the world, is called to fulfil the mission of God as expressed in the call ‘Missio Dei’ and influentially remains with the integrity of the mission of Christ (Missio Christos), which is liberative and practical. For Christ was not only concerned with the spiritual needs of the people, but also with their material well-being. The following question therefore arises: how can the church in Africa, in general, and in Zimbabwe, in particular, actively do God’s mission and remain with integrity in the midst of the reality of suffering. Furthermore, how can the church for mission and reconstruction be understood in a post-colonial Zimbabwe given the contextual realities of political crises, corruption, poverty, moral decadence, defined or censored truth, leadership crises and no freedom of expression? This article argues that, although the church is faced with these arduous realities, it remains called by God to do God’s mission. While in post-colonial Zimbabwe the socio-political, socio-economic and socio-religious situation might seem hopeless, the church has remained vibrant and alive for reconstruction theology. The transformation of society is possible given the authority and mission mandate of the church. This article argues that the church is a key player in reconstruction theology and in the transformation of society. For transformation to be possible, the church should witness to the gospel of Christ without fear of being labelled, castrated and persecuted. The article asserts that the spirit of the Bible should be revived in a time of reconstruction in Zimbabwe. The assumption in this article is that Zimbabwe is ready for reconstruction discourse. For this to happen, the researchers argue that the church as a critical relevant player in reconstruction needs to ‘be church’ in its missional mandates. Integrity is essential if a church wants to be relevantly missional and reconstructive. Integrity means that the church has to embrace the risks and opportunities associated with mission.
From three congregations to one autonomous church: The Swaziland Reformed Church
Authors: Van Wyngaard Arnau
Published: May 2018

This article covers the time from 1985 to 1992 in the history of the Swaziland Reformed Church (SRC). In 1985, for the first time in its existence, the SRC had four missionaries working in the four districts of the country. At this stage the SRC formed a presbytery within the synodical region of the Dutch Reformed Church in Africa (DRCA) of Northern Transvaal. In 1989 – at its own request – this church became a regional synod within the DRCA. However, not long thereafter, in 1992, it was forced to become an independent Reformed church, even though it still remained part of the family of Dutch Reformed churches. Making use of original documents, this article records this history of the SRC.
Lean and agile in small- and medium-sized enterprises: Complementary or incompatible?
Authors: Gurahoo Neeshal , Salisbury Roger H.
Published: May 2018

Background: This study explores the relationship between the implementation of lean supply chain management and the agility of manufacturing small- and medium-sized enterprises (SMEs). Although some studies have suggested that these two approaches are mutually exclusive, other research finds that they may be applied to different parts of the supply chain or may be compatible through the common elements of process integration and supply chain-wide collaboration. Objectives: Through an investigation of two companies at different stages of lean implementation, this study sought to establish which of these paradigms might be applicable in the context of South African SMEs. Method: Semi-structured interviews were conducted with managers at both companies, and the progress towards lean manufacturing was probed. Results: Company B was found to have made considerably more progress towards a lean system than Company A. Neither company had achieved just-in-time purchasing, and this was identified as a challenging aspect for SMEs. Both companies experienced stockouts and long lead times. The volatile nature of their markets indicated a need for greater agility. Company B was found to have a greater potential for speed, flexibility and response. It is proposed that this may be a direct consequence of greater progress in lean implementation. Conclusion: It was concluded that strategies to implement lean are a necessary prelude to achieving an agile enterprise. This article presents a model incorporating the lean principles that SMEs should adopt in order to achieve agility.
Screening for mutation hotspots in Bardet–Biedl syndrome patients from India
Authors: Chandrasekar Sathya Priya , Namboothiri Sheela , Sen Parveen , Sarangapani Sripriya
Published: May 2018

Background & objectives:

Bardet–Biedl syndrome (BBS) is a genetically heterogeneous autosomal recessive disorder characterized by multiple organ defects involving retina, kidney, liver and brain. Disease-causing mutations in BBS genes narrowed down by homozygosity mapping in small consanguineous and non-consanguineous pedigrees were reported in 80 per cent of the study population. This study was aimed to screen these genes (BBS3, BBS10) and specific exons of BBS genes (BBS1, BBS5, MKKS, BBS9, BBS11 and BBS12) for recurrent mutations in a selected sample of BBS patients.

Methods:

The recurrent mutations in BBS genes were screened in the BBS affected individuals by PCR based direct sequencing. The pathogenicity of the observed mutations were confirmed by co-segregation analysis, screening of healthy unrelated controls and in silico analysis.

Results:

In the 64 BBS patients (44 males, 20 females) were studied, mutations were predominant in BBS10 and ARL6 genes; the c.272T>C; p.(I91T) mutation in ARL6 gene was a recurrent mutation. One novel non-sense mutation c.425T>G; p(L142*) was obtained in BBS5 gene (family BSI-31).

Interpretation & conclusions:

BBS10 gene mutations clustered in exon 2 of the gene suggesting the exon as a probable hotspot for mutations in Indian population. A cost- and time-effective strategy for the molecular diagnosis of BBS was designed based on these results.
C-glycosyl flavone from Urginea indica inhibits proliferation & angiogenesis & induces apoptosis via cyclin-dependent kinase 6 in human breast, hepatic & colon cancer cell lines
Authors: Bevara Ganesh Babu , Naveen Kumar A. D. , Koteshwaramma K. Laxmi , Badana Anil , Kumari Seema , Malla Rama Rao
Published: May 2018

Background & objectives:

Search for novel compounds beneficial to the treatment of cancer attracts a great deal of attention. We earlier demonstrated the isolation of 5,7-dihydroxy-2-[4’-hydroxy-3’-(methoxymethyl)phenyl]-6-C-β-glucopyranosyl flavone, a novel C-glycosyl flavone from Urginea indica bulb. The present study was undertaken to investigate the effect of this novel compound on human normal epithelial and breast, hepatic and colon cancer cell lines.

Methods:

The maximum non-toxic concentration (MNTC) and cytotoxicity of C-glycosyl flavone were assayed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). Cell cycle was analyzed by flow cytometry. Docking studies were performed to predict possible targets. Levels of cyclin-dependent kinase 1 (CDK1) and CDK6, Bcl2 and BAX and cytochrome c were quantified by specific ELISA. Mitochondrial membrane potential was determined using JC-1 dye. Apoptosis was quantified by Annexin V ELISA method.

Results:

Flow cytometry analysis demonstrated G0/G1 arrest. In silico docking studies predicted CDK1 and CDK6 as a possible target of C-glycosyl flavone. In vitro study confirmed CDK6 as the main target in C-glycosyl flavone-treated cancer cell lines. C-glycosyl flavone treatment also induced membrane blebbing, chromatin fragmentation and nucleosome formation. C-glycosyl flavone treatment caused marked loss of mitochondrial membrane potential, decrease in Bcl2/BAX ratio and activation of caspase-3 and release of caspase-9 and cytochrome c. In addition, C-glycosyl flavone inhibited the tumour-induced angiogenesis and reduced the vascular endothelial growth factor levels. Similarly, CDK6 inhibitor significantly inhibited proliferation and angiogenesis and induced apoptosis in tested cell lines.

Interpretation & conclusions:

The results indicate that C-glycosyl flavone may exert induction of apoptosis, cell cycle arrest and inhibition of angiogenesis via CDK6. Thus, targeting CDK6 using C-glycosyl flavone may serve as a novel therapeutic approach for the treatment of breast, hepatic and colon cancers.
La relación entre el consumo de medios digitales, la participación y la eficacia política. Un estudio sobre los jóvenes universitarios en Colombia
Authors: Barredo Ibáñez Daniel , Garza Montemayor Daniel Javier , Dias Castillo Dania Lorena
Published: May 2018

La participación política es esencial para la consolidación democrática, dado que, mediante el involucramiento social, la ciudadanía puede alcanzar consensos y desarrollar deliberaciones públicas. Esto es especialmente importante en Colombia, cuya sociedad se ha visto envuelta tanto en un conflicto armado durante más de cinco décadas, como asolada por las mafias asociadas al narcotráfico, la brecha económica y la falta de presencia del Estado en algunas regiones, entre otras. Metodología: A través de una encuesta a 581 jóvenes universitarios colombianos, hemos evaluado la relación entre cuatro categorías que pueden ser determinantes para la calidad democrática, como son el consumo de medios digitales, la participación en línea y fuera de línea y la eficacia política. Resultados y conclusiones: En los resultados, además de un vínculo entre las variables indicadas, observamos un bajo consumo de medios tradicionales, así como una falta de participación –en línea y fuera de línea-, en los estudiantes consultados.