bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS SEGMENTASI PELANGGAN MENGGUNAKAN KOMBINASI RFM MODEL DAN TEKNIK CLUSTERING
Authors: Adiana Beta Estri , Soesanti Indah , Permanasari Adhistya Erna
Published: May 2018

Intense competition in the business field motivates a small and medium enterprises (SMEs) to manage customer services to the maximal. Improve of customer royalty by grouping cunstomers into some of groups and determining appropriate and effective marketing strategies for each group. Customer segmentation can be performed by data mining approach with clustering method. The main purpose of this paper is customer segmentation and measure their loyalty to a SME’s product. Using CRISP-DM method which consist of six phases, namely business understanding, data understanding, data preparatuin, modeling, evaluation and deployment. The K-Means algorithm is used for cluster formation and RapidMiner as a tool used to evaluate the result of clusters. Cluster formation is based on RFM (recency, frequency, monetary) analysis. Davies Bouldin Index (DBI) is used to find the optimal number of clusters (k). The customers are divided into 3 clusters, total of customer in first cluster is 30 customers who entered in typical customer category, the second cluster there are 8 customer whho entered in superstar customer and 89 customers in third cluster is dormant cluster category.
Dynamic dependence structure between energy markets and the Italian stock index
Authors: Masala Giovanni
Published: May 2018

The dependence structure between the main energy markets (such as crude oil, natural gas, and coal) and the main stock index plays a crucial role in the economy of a given country. As the dependence structure between these series is dramatically complex and it appears to change over time, time-varying dependence structure given by a class of dynamic copulas is taken into account.To this end, each pair of time series returns with a dynamic t-Student copula is modelled, which takes as input the time-varying correlation. The correlation evolves with the DCC(1,1) equation developed by Engle.The model is tested through a simulation by employing empirical data issued from the Italian Stock Market and the main connected energy markets. The author considers empirical distributions for each marginal series returns in order to focus on the dependence structure. The model’s parameters are estimated by maximization of the log-likelihood. Also evidence is found that the proposed model fits correctly, for each pair of series, the left tail dependence coefficient and it is then compared with a static copula dependence structure which clearly underperforms the number of joint extreme values at a given confidence level.
Yüksek Verimli Transformatörlerin Yatırım Geri Dönüş Sürelerinin İncelenmesi
Authors: DOGRUKAN Hüzeyfe , TEKE Ahmet , SARIBULUT Lütfü
Published: May 2018

Elektrik dağıtım şebekesinde kullanılan 15 yaş ve üstü transformatörlerin teknik kayıplarının yüksek olması nedeniyle verimlilikleri düşüktür. Enerji verimliliğinin önemini artırması ve teknolojik gelişmeler sayesinde ülkemizde yüksek verimli transformatörler üretilmeye başlanmıştır. Bu çalışmayla literatürde ilk defa Nisan 2018’de üretime başlanacak daha yüksek verimli transformatörlerin, dağıtım şebekesinde kullanılan ve 2005 ve öncesi imal yılına sahip transformatörlerle değişiminin kamu ve özel şirketlere göre yatırım geri dönüş süreleri incelenmiştir. Transformatörlerdeki teknik kayıplarının azaltılmasıyla, elektrik şebekesindeki veriminin artması ve sera gazı emisyonunda azalma sağlanması da gerçekleşecektir.
Murgul Bakır Madeni-Damar Atık Barajı (Artvin) Alanındaki Yeraltı ve Yüzey Suyu Kaynaklarının Hidrojeolojik Özellikleri ve Boya Deneyi
Authors: DİŞLİ Erkan
Published: May 2018

Atık barajı (DAMAR), Damar maden sahası genelinde yapılan madencilik çalışmaları sonucunda bakır, bakırlı pirit ve bunlara özgü diğer cevherlerin çıkarılması ve bu cevherlerin yerinde kurulan tesiste zenginleştirme işlemleri sonucunda ortaya çıkan atıkların depolanmasında kullanılmaktadır. Atık barajın mansabından itibaren yaklaşık 60-65 m arasında değişen mesafelerde farklı lokasyonlarda küçük debili kaynak boşalımları gözlenmiştir. Yeraltısuyu ve yüzey suyu kaynaklarında pH değeri 2,91-11,17 ve 3,4-7,17 arasında, elektiriksel iletkenlik (EC) değeri ise yeraltısuyu kaynaklarında 589-4397 μS/cm ve yüzey suyu kaynaklarında 528-3060 μS/cm arasında değiştiği belirlenmiştir. Araştırma alanında yer alan atık barajı (Damar) ile baraj aks yerinin kuzey batısında farklı lokasyonlarda sızıntı şeklinde boşalım gösteren kaynaklar arasındaki hidrodinamik ilişkiyi belirlemek amacı ile yapılan boya deneyi sonucunda S1 sızıntı noktasında 0,13 mikrogram/l uranin konsantrasyonuna rastlanmıştır. Barajdan kaynaklanan sızmanın önlenmesi amacı ile hidrolik iletkenlik değeri çok düşük olan bir malzeme (K<10-6 cm/s) atık baraj alanına deşarj edilmeye başlanılmıştır. Yapılan deşarj işlemi sırasında, en alt kotta (1039 m) gözlenen S1 kaynağının tamamen kuruduğu tespit edilmiştir.
Bodur Mürver (Sambucus ebulus L.) ile Yün Ġpliklerin Boyanması
Authors: ÖZDEMİR Halil
Published: May 2018

Son yıllarda tekstil terbiye işletmelerinde kullanılan sentetik boyarmaddelerin ve pigmentlerin kullanımı insan sağlığı ve çevreye verdiği zararlardan ötürü tartışılmaktadır. Bu sebeple, biyolojik olarak parçalanabilirliği, toksik (zehirli) olmaması, insan sağlığı ve atık su kontaminantı için herhangi bir sorun oluşturmaması nedeniyle doğadaki bitkilerden elde dilen doğal boyarmaddelerin kullanımı artmaya başlamıştır. Bu çalışma kapsamında Sambucus ebulus L. (Bodur mürver) bitkisinin meyve, yaprak ve gövde gibi kısımlarından elde edilen doğal boyarmaddeyle yün iplikleri farklı mordan maddeleri kullanılarak boyanmıştır. Spektrofotometre cihazında yapılan renk ölçümleri ve renk karşılaştırmaları sonucunda, Demir Sülfat (FeSO4) ile yapılan mordanlama sonucunda elde edilen K/S değerleri ile daha koyu renklere ulaşılabildiği tespit edilmiştir. Sonuç olarak, tıp, eczacılık, gıda ve kimya gibi birçok alanda kullanılan Sambucus ebulus L. bitkisinin özellikle doğal boyamacılık alanında da kullanılabileceği, elde edilen kahverengi ve tonları açısından aspir, ayva, ceviz gibi doğal boyacılıkta kullanılan bitkilere alternatif olabileceği belirtilmiştir.
Climate vulnerability index fluctuation: a case of Iran
Authors: Hatef Hakimeh , Kakhki Mahmoud Daneshvar , Kohansal Mohammad Reza , Bannayan Mohammad , Froshani Naser Shahnoushi
Published: May 2018

Climatic fluctuations have severe effects on water and soil resources and economy as a whole. It is hence important to study the fluctuations of climatic parameters in different regions in order to recognize the source and type of parameter that have led to fluctuating climatic parameters. To achieve this goal, the current study attempts to address the following issues: what are the different sources of fluctuations in climate parameters? Do different regions have the same degree of vulnerability and what is the most fluctuating parameter in each region? To answer these questions, the study suggests climate vulnerability index fluctuation. Calculating the index requires data provided by weather stations, so 115 weather stations were divided into 12 climatic zones based on the availability of data. This index considered permanent and frequent temperature, precipitation, storm and aridity shocks. The results indicated that the maximum rank of index has occurred in hot semi-mountainous and very hot desert. Also, temperature fluctuation was the major factor in five regions, whereas wind fluctuation was the major factor in three regions. Generally, the northern and western parts of the country experienced minimum climatic changes. Moving towards southern regions of the country, more climatic changes were observed.
New status for hesionid polychaetes (Annelida, Polychaeta)
Authors: Costa Dimitri de Araujo , Christoffersen Martin Lindsey
Published: May 2018

Nomenclatural observations of the family Hesionidae Grube, 1850 (Annelida, Polychaeta), and according to the “Principle of Priority”, International Code of Zoological Nomenclature, demonstrate that some current names present in this family are invalid. Firstly, the name of the subfamily Ophiodrominae, which is based on genus Ophiodromus Sars, 1862, should be replaced. This is because the genus was synonymized to Oxydromus Grube, 1855, which corresponds the oldest genus of this group. In 1998, Pleijel established the tribe Psamathini, based on type genus Psamathe Johnston, 1838; later, in 2015, Summers, Pleijel & Rouse redefined the status this tribe for subfamily Psamathinae. However, the oldest genus of this hesiond group is Nereimyra Blainville, 1828. Finally, in 2012, Pleijel, Rouse, Sundkvist & Nygren erected the tribe Amphidurini, based on genus Amphiduros Hartman, 1959. On the other hand, the oldest genus is Parahesione Pettibone, 1956. According with the Principle of Priority, these hesionid taxa must be replaced by the next oldest available name from among its synonyms, including the names of the taxa contained within the same group. Therefore, we here are establishing the subfamily Oxydrominae nomen novum, the subfamily Nereimyrinae nomen novum, the tribe Oxydromini nomen novum and the tribe Parahesionini nomen novum.
Resposta ecotoxicológica e parâmetros físicos e químicos em rio de área costeira do nordeste brasileiro
Authors: Gomes Wanessa Kaline Araújo Moura , Souza Raquel Franco de , Medeiros Guilherme Fulgêncio de , Crispim Maria Cristina
Published: May 2018

O objetivo deste estudo foi avaliar a qualidade da água do rio Doce por meio da análise de parâmetros físicos e químicos e de ensaios ecotoxicológicos utilizando Ceriodaphnia dubia Richard, 1894 (Crustacea, Cladocera) e Ceriodaphnia silvestrii como organismos teste. As amostragens foram realizadas mensalmente de maio de 2012 a maio de 2013. Os locais de amostragem foram denominados LE, R2, R3, R4 e R5. A análise dos parâmetros físico-químicos evidenciou, no período de amostragem, maio de 2012 a maio 2013, que as águas do Rio Doce ao atravessarem a área dos pontos R3 e R4, de maneira geral, apresentaram valores mais baixos de temperatura, pH e cloreto. Também foi possível observar diferença no comportamento dos parâmetros em relação aos meses ao longo do ano. Os ensaios dos testes de toxicidade crônica indicaram a existência de toxicidade, para Ceriodaphnia dubia e Ceriodaphnia silvestrii, em todos os pontos amostrados. A alteração encontrada nos parâmetros físicos e químicos medidos em água e os resultados dos testes de toxicidade crônica sugerem que as diversas atividades desenvolvidas no entorno da Bacia podem estar contribuindo para as variações observadas. Como fatores que influenciaram os resultados dos testes ecotoxicológicos e dos parâmetros físicos e químicos apontados no estudo pode-se destacar a proximidade de áreas agrícolas, com consequente utilização indiscriminada de agrotóxicos, o descarte inadequado de resíduos destes produtos, a proximidade de vias de tráfego, além do descarte de esgotos domésticos e crescimento urbano desordenado, observados ao longo da drenagem.
Ethical Issues in Addressing Social Media Posts About Suicidal Intentions During an Online Study Among Youth: Case Study
Authors: Young Sean D , Garett Renee
Published: May 2018

Due to the popularity of social media, researchers are increasingly conducting studies that monitor and analyze people’s health-related social media conversations. Because social media users can post about any topic at any time, no known best ethical practices exist as to whether and how to monitor participants’ posts for safety-related issues that might be unrelated to the study, such as expressions of suicidal intentions. This is a case study during a social media-based study on sleep and activity among freshman undergraduate students, where we by chance noticed that a student was using social media to express suicidal intentions. Although we connected the student to student psychological services in order to receive treatment, we encountered a number of barriers that initially prevented this from occurring, such as institutional review board and regulatory practices related to lack of experience with these newer types of studies. We discuss the implications of this experience for future research.
Sleep Duration and Health-Related Quality of Life in Predialysis CKD
Authors: Sung Su-Ah , Hyun Young Youl , Lee Kyu Beck , Park Hayne Cho , Chung Wookyung , Kim Yeong Hoon , Kim Yong-Soo , Park Sue Kyung , Oh Kook-Hwan , Ahn Curie ,   on behalf of the KNOW-CKD Study Investigators
Published: May 2018

Background and objectives

Sleep duration has been associated with cardiometabolic risk and mortality. The health-related quality of life represents a patient’s comprehensive perception of health and is accepted as a health outcome. We examined the relationship between sleep duration and health-related quality of life in predialysis CKD.

Design, setting, participants, & measurements

In this cross-sectional study, data from 1910 adults with CKD enrolled in the Korean Cohort Study for Outcome in Patients with CKD were analyzed. Health-related quality of life was assessed with the physical component summary and mental component summary of the Short Form-36 Health Survey. Low health-related quality of life was defined as a Short Form-36 Health Survey score >1 SD below the mean. Using a generalized additive model and multivariable logistic regression analysis, the relationship between self-reported sleep duration and health-related quality of life was examined.

Results

Seven-hour sleepers showed the highest health-related quality of life. We found an inverted U-shaped relationship between sleep duration and health-related quality of life as analyzed by a generalized additive model. In multivariable logistic analysis, short sleepers (≤5 h/d) had lower health-related quality of life (odds ratio, 3.23; 95% confidence interval, 1.86 to 5.60 for the physical component summary; odds ratio, 2.37; 95% confidence interval, 1.43 to 3.94 for the mental component summary), and long sleepers (≥9 h/d) had lower health-related quality of life (odds ratio, 2.80; 95% confidence interval, 1.55 to 5.03 for the physical component summary; odds ratio, 2.08; 95% confidence interval, 1.20 to 3.60 for the mental component summary) compared with 7-hour sleepers. Sleep duration had a significant U-shaped association with low health-related quality of life.

Conclusions

These findings suggest that short or long sleep duration is independently associated with low health-related quality of life in adults with CKD.
Palatability and Biochemical Factors of Beef from Mature Cattle Finished on a Concentrate Diet Prior to Harvest
Authors: Gredell Devin A. , O’Quinn Travis G. , Legako Jerrad F. , Brooks J. Chance , Miller Markus F.
Published: May 2018

The objective of this study was to investigate the influence of grain-finishing on mature beef palatability. Beef strip loins (n = 15 per treatment) from 2 marbling score groups [Slight (SL) and Traces/Practically Devoid (TR/PD)] and 3 carcass types [young fed (YF), mature fed (MF), and mature unfed (MU)] were collected. Young fed and MF cattle were grain-finished prior to harvest, whereas, beef from MU cattle were not identified as being grain-finished prior to harvest. Consumer and trained sensory panels evaluated steaks for palatability characteristics. Additionally, Warner-Bratzler shear force (WBSF), collagen solubility, sarcomere length, and volatile compounds were evaluated. Consumer ratings were not influenced (P > 0.05) by an interaction of main effects. Slight samples were greater (P < 0.05) than TR/PD samples for tenderness, juiciness, flavor, and overall like. Trained panelists rated SL samples more tender (P < 0.01) than TR/PD samples. Additionally, YF and MU steaks were the most and least tender (P < 0.01), respectively. No differences (P > 0.05) were observed among SL samples for beef flavor, beef flavor intensity, or off-flavor intensity due to carcass type. However, TR/PD-MF and MU steaks had more intense (P < 0.01) off-flavors. Steaks from YF and MF carcasses had lower (P < 0.01) WBSF values than steaks from MU carcasses. Percentage of heat soluble collagen was greatest (P < 0.01) in YF carcasses. Among SL treatments, sarcomere length was not affected (P > 0.05) by carcass type; however, MF and MU carcasses with TR/PD marbling scores had shorter (P < 0.05) sarcomeres than YF carcasses. Various volatile compounds were influenced (P < 0.05) by treatment and showed relationships with sensory ratings. Improvements in palatability were observed due to grain-finishing mature cattle, suggesting an adequate degree of marbling could offset negative palatability traits typically associated with beef from mature cattle.
Fatores relacionados ao desenvolvimento reprodutivo em novilhas Nelore: Revisão
Authors: De Sousa Rafael , De Lima Gonçalves Juliete , Freitas dos Santos Sueli , Ferreira Fernandes Antonio Marcos , Dela Ricci Gisele
Published: May 2018

The intensification of beef cattle production systems, aiming to increase production rates, requires the use of technologies that favor the rational exploitation of livestock. Among the animal indicators, reproductive efficiency stands out because it is closely associated with the conditions of nutrition, management and sanity, which together with the genetic pattern influence the general enjoyment of the herd. Among the Bos taurus indicus breeds used in Brazilian meat production systems, the Nellore breed occupies a prominent place, mainly due to its adaptation to the tropical climate. However, animals of this genetic group are usually sexually late than those of Bos taurus taurus bulls, even when bred in similar conditions. And within this context the age at first calving is one of the aspects that directly reflect the determination of the reproductive efficiency of the herd. Based on this assumption, the inclusion of heifers at younger ages to reproduction, providing improvements in profitability. This review aims to address some aspects related to reproductive development in Nellore heifers, such as the influence of live weight, nutrition, hormone therapy and reproductive tract morphology. According to a bibliographical survey presented in this review, it is concluded that the attainment of puberty in Nellore heifers is multifactorial and varies according to the general management of the herd and the genetic composition of the animals.
Lesões histopatologicas de tubas uterinas em femeas zebuinas (Bos taurus indicus) submetidas a aspirações foliculares
Authors: OLIVEIRA CAYQUE , . Cayque Emmanuel de Oliveira , . Guilhrme Mussi , . Humberto Eustáquio Coelho , . Helio Alberto , . Raul Moraes Nolasco , . Claudio Henrique Gonçalves Barbosa , . Laryssa Costa Rezende , . Tatiane Furtado Carvalho , . Luis Oliveira Lopes , . Marcelo Coelho Lopes
Published: May 2018

The aim of this study is to characterize macro and microscopic changes in uterine fallopian tubes of embryo donors previously submitted to a series of follicular punctures, created in the Uberaba-MG region. Due to the difficulty in confirming pregnancy, 33 female bovine oocytes were sent for slaughter by follicular aspiration. Their reproductive devices were separated and the right and left tubes were evaluated. In the histopathological evaluations were found 30 alterations being: 43% (13/30) of acute salpingitis, 33% (10/30) acute catarral salpingitis, 17% (5/30) chronic salpingitis, 3% (1/30) desquamation of Epithelium and 3% (1/30) mucosal degeneration. With the present work it can be inferred that continuous follicular aspiration in bovine females promotes lesions seen under light microscopy in the uterine tube, such as acute, catarrhal and chronic salpingitis, mucosal degeneration and scaling of the epithelium. These lesions may be results of lesions that started in the uterus and / or promoted by the puncture of adjacent structures leading to the reduction of the fertility of these animals.
Effect of growing seasons, plant extracts with various rates on Black Bean Aphid, Aphis Fabae (Aphididae: Homoptera)
Authors: Qadir Rebin Abdalrahman , M. Amin Havall , J. Majeed Ardalan
Published: May 2018

Four plant extracts: Eucalyptus (Eucalyptus sp), Onion (Allium cepa Linn), Garlic (Allium sativum) and Cinnamon (Cinnamomum sp) with three extraction rates (0, 1 and 3) % in 2016 and 2017 seasons were used against aphid population in broad bean (Vicia faba). Some plants characteristic; Plant Height (cm), Fresh Weight.Plant-1 (g), Dry Weight.Plant-1 (g), Number of Pods.Plant-1, and aphid’s dead number after 6 hours and 24 hours were taken. Eucalyptus affected significantly on Number of Pods.Plant-1compared with the other extraction (7.416). As the extraction rate increased, all parameters increased. Pearson’s correlation test for traits in 2017 season indicated that there were a significant strong correlate and better than 2016 season among Number of Pods .Plant-1, Fresh Weight.Plant-1 (r = 0.770**), Dry Weight .Plant-1 (r = 0.816**), and M24 (r = 871**). Based on Number of Pods.Plant-1, the best interaction between the season, extraction types, and extraction rates, was a combination of the 2017 season × Eucalyptus extraction × 1% Extraction rate.
Rwanda: In the Aftermath of Genocide Against Tutsis. Survivor and Non-Victim Position to the Subordinate Identity and "Rwandeity" Problem
Authors: Kanazayire Clementine ,   Mental Health Department University of Rwanda
Published: May 2018

Following the genocide against the Tutsi in 1994, the Rwandan government implemented a policy of strengthening national identification at the expense of the ethnic group identities, which resembled the common in-group identity model (CIIM) known in social psychology. The present interview study examined how participants live being a member of the survivor or non-victim group and being a Rwandan. It also investigated the different perspectives of survivors and non-victims in relation to the policy of strengthening national identification at the expense of the ethnic groups. Consistent with socio-emotional needs-based model (NBM) (Nadler & Shnabel, 2008), the results show that most non-victims support the policy of strengthening national identification at the expense of the ethnic group identity because the national identity permits them to escape this negative moral image conferred by the subordinate identity. For survivors, their subordinate identity is related to the history of victimization. Half of them were supportive of this policy but they had to ensure that the commemoration period is maintained. The two oldest survivors preferred political identities which consider the ethnic group and national identity at the same time. Other reasons advanced of supporting single recategorization policy are related to the official translated version of the history, diverse government policies, empathy towards to the members of the perpetrator group and not representing the prototype of the group.
MODEL DINAMIKA SISTEM PENGEMBANGAN TEKNOLOGI SPESIFIK WILAYAH DALAM PENANGANAN PASCA PANEN NANAS (Studi Kasus di Kabupaten Subang) - Model System Dynamics Of Development Specific Technology Region In Post-harvest Handling Pineapple (Case Study In Subang District)
Authors: Triyono Agus , Bafdal Nurpilihan Bafdal , Perdana Tomy , Abbas Akmadi
Published: May 2018

AbstrakIndikator keberhasilan di usaha kecil dan menenggah (UKM) adalah peningkatan nilai tambah dan pendapatan. Kemampuan UKM pengolahan nanas pada produksi dodol yang mempunyai nilai tambah rendah. Diperlukan kajian dengan metoda permodelan sistem dinamik untuk mengkaji permasalahan yang terjadi pada pengembangan teknologi spesifik wilayah. Hasil kajian menemukan faktor pengungkit (leverage) dalam peningkatan adopsi teknologi spesifik wilayah di UKM dalam memproduksi produk olahan nanas baru, seperti; (1) Peningkatan penguasaan (adopsi) teknologi yang sesuai, termasuk sarana produksi, melalui kebijakan dalam alokasi dana riset, dan hasil simulasi skenario yaitu peningkatan alokasi dana riset pengembangan teknologi, maka pendapatan pengusaha UKM naik hampir 100 %, (2) Peningkatan akses permodalan, dan hasil simulasi skenario yaitu peningkatan anggaran peminjaman untuk pengembangan UKM, maka pendapatan pengusaha UKM meningkat naik 14 %, (3) Peningkatan kemampuan SDM termasuk kesiapan pengelola UKM, dan hasil simulasi skenaro, yaitu peningkatan kemampuan SDM melalui pelatihan, maka pendapatan pengelola UKM meningkat naik 13.35 %, Kata kunci : Adopsi Teknologi, Komoditi Nanas, Sistem Dinamik, UKM Pengolahan nanas,AbstractIndicators of success in small businesses and medium (SMEs) is the increase in value-added and revenue. Pineapple processing ability levels SMEs still dodol products that have low added value. Necessary to study the dynamic system modeling method to study the problems that occurred in specific technology region development. Results of the study found the factors lever (leverage) in the increased adoption of specific technologies region of SMEs in the new pineapple producing products, such as; (1) Increased adoption of appropriate technology, including the equipment of production, through policies in the allocation of research funding, and the results of the simulation scenario is an increase in the allocation of research funding technological development, the revenue of SMEs rose by nearly 100%, (2) Improved access to capital , and the simulation scenario results are an increase in the budget allocation for the development of SMEs, the SME entrepreneurs increased revenue rose 14%, (3) Increasing the capability of Human Resources including the readiness of SME intrepreuneurs, and simulation scenario results, which improve human resource capacity through training, the intrepreneurs of SMEs increased revenue up 13 %.Keywords:  Technology Adoptiony,  CVomodity  Pineapple, SMEs Pineapple Processing, Dynamic Systems
The Poetry of Antiques: Trade and/in Knowledge among British Antiques Dealers
Authors: Makovicky Nicolette
Published: May 2018

This article considers the role of information, communication, and knowledge in processes of exchange and value creation in the British antiques market. As such, it positions itself between the long-standing anthropological interest in the cultural construction of value (see APPADURAI 1986; GRAEBER 2001), and the equally long-standing interest in how asymmetries of information affect consumer behaviour (see AKERLOF 1970). Drawing on ethnographic material gathered over three months of fieldwork amongst antique dealers in the Notting Hill and Kensington Area of London, I aim to through light on what it is that dealers ‘know’ and how this knowledge is translated into profit within the trade. I argue that dealers’ knowledge of objects is encyclopaedic, discursive, and tactile at once and it is gained mainly through many years of handling of objects. Dealers must also keep abreast with the market movement of objects and their prices using this information to gage the potential profit they may accrue from a deal. Both forms of knowledge, I argue, are mobilized at once when a dealer is investing in stock and when he or she seeks to sell an item, in a ritual of show-and-tell that serves to both to verify the quality, condition and authenticity of a piece and to simultaneously negotiate its price.
Artificial intelligence used in genome analysis studies
Authors: D’Agaro Edo
Published: May 2018

Next Generation Sequencing (NGS) or deep sequencing technology enables parallel reading of multiple individual DNA fragments, thereby enabling the identification of millions of base pairs in several hours. Recent research has clearly shown that machine learning technologies can efficiently analyse large sets of genomic data and help to identify novel gene functions and regulation regions. A deep artificial neural network consists of a group of artificial neurons that mimic the properties of living neurons. These mathematical models, termed Artificial Neural Networks (ANN), can be used to solve artificial intelligence engineering problems in several different technological fields (e.g., biology, genomics, proteomics, and metabolomics). In practical terms, neural networks are non-linear statistical structures that are organized as modelling tools and are used to simulate complex genomic relationships between inputs and outputs. To date, Convolutional Neural Networks (CNNs) and Recurrent Neural Networks (RNN) have been demonstrated to be the best tools for improving performance in problem solving tasks within the genomic field.
Advanced approaches to produce polyhydroxyalkanoate (PHA) biopolyesters in a sustainable and economic fashion
Authors: Koller Martin , Braunegg Gerhart
Published: May 2018

Polyhydroxyalkanoates (PHA), the only group of “bioplastics” sensu stricto, are accumulated by various prokaryotes as intracellular “carbonosomes”. When exposed to exogenous stress or starvation, presence of these microbial polyoxoesters of hydroxyalkanoates assists microbes to survive.

“Bioplastics” such as PHA must be competitive with petrochemically manufactured plastics both in terms of material quality and manufacturing economics. Cost-effectiveness calculations clearly show that PHA production costs, in addition to bioreactor equipment and downstream technology, are mainly due to raw material costs. The reason for this is PHA production on an industrial scale currently relying on expensive, nutritionally relevant “1st-generation feedstocks”, such as like glucose, starch or edible oils. As a way out, carbon-rich industrial waste streams (“2nd-generation feedstocks”) can be used that are not in competition with the supply of food; this strategy not only reduces PHA production costs, but can also make a significant contribution to safeguarding food supplies in various disadvantaged parts of the world. This approach increases the economics of PHA production, improves the sustainability of the entire lifecycle of these materials, and makes them unassailable from an ethical perspective.

In this context, our EU-funded projects ANIMPOL and WHEYPOL, carried out by collaborative consortia of academic and industrial partners, successfully developed PHA production processes, which resort to waste streams amply available in Europe. As real 2nd-generation feedstocks”, waste lipids and crude glycerol from animal-processing and biodiesel industry, and surplus whey from dairy and cheese making industry were used in these processes. Cost estimations made by our project partners determine PHA production prices below 3 € (WHEYPOL) and even less than 2 € (ANIMPOL), respectively, per kg; these values already reach the benchmark of economic feasibility.

The presented studies clearly show that the use of selected high-carbon waste streams of (agro)industrial origin contributes significantly to the cost-effectiveness and sustainability of PHA biopolyester production on an industrial scale.
The genus Portulaca as a suitable model to study the mechanisms of plant tolerance to drought and salinity
Authors: Borsai Orsolya , Hassan Mohamad Al , Boscaiu Monica , Sestras Radu E. , Vicente Oscar
Published: May 2018

Drought and soil salinity are at present the major factors responsible for the global reduction of crop yields, and the problem will become more severe in the coming decades because of climate change effects. The most promising strategy to achieve the increased agricultural production that will be required to meet food demands worldwide will be based on the enhancement of crop stress tolerance, by both, traditional breeding and genetic engineering. This, in turn, requires a deep understanding of the mechanisms of tolerance which, although based on a conserved set of basic responses, vary widely among plant species. Therefore, the use of different plant models to investigate these mechanisms appears to be a sensible approach. The genus Portulaca could be a suitable model to carry out these studies, as some of its taxa have been described as tolerant to drought and/or salinity. Information on relevant mechanisms of tolerance to salt and water stress can be obtained by correlating the activation of specific defence pathways with the relative stress resistance of the investigated species. Also, species of the genus could be economically attractive as ‘new’ crops for ‘saline’ and ‘arid’, sustainable agriculture, as medicinal plants, highly nutritious vegetable crops and ornamentals.
Fluorescence lifetime imaging of red yeast Cystofilobasidium capitatum during growth
Authors: Vanek Martin , Mravec Filip , Szotkowski Martin , Byrtusova Dana , Haronikova Andrea , Certik Milan , Shapaval Volha , Marova Ivana
Published: May 2018

Red yeast Cystofilobasidium capitatum autofluorescence was studied by means of confocal laser scanning microscopy (CLSM) to reveal distribution of carotenoids inside the cells. Yeasts were cultivated in 2L fermentor on glucose medium at permanent light exposure and aeration. Samples were collected at different times for CLSM, gravimetric determination of biomass and HPLC determination of pigments. To compare FLIM (Fluorescence Lifetime Imaging Microscopy) images and coupled data (obtained by CLSM) with model systems, FLIM analysis was performed on micelles of SDS:ergosterol and SDS:coenzyme Q with different content of ergosterol and coenzyme Q, respectively, and with constant addition of beta-carotene. Liposomes lecithin:ergosterol:beta-carotene were investigated too. Two different intracellular forms of carotenoids were observed during most of cultivations, with third form appeared at the beginning of stationary phase. Observed behavior is probably due to formation of some kind of carotenoid protective system in membranes of different compartments of yeast cell, especially cytoplasmic membrane.
Seznam ugotovljenih ptic Slovenije s pregledom redkih vrst / The list of birds of Slovenia with an overview of rare species
Authors: Hanžel Jurij , Šere Dare
Published: May 2018

The present article is an upgrade and update of national checklists published by the Slovenian Rarities Committee in the past. A species is considered rare if fewer than 10 records are known after 1st January 1950. The number of records for these species is given in the list. Additionally, species designated as rare in the last edition of the list and extinct breeders were also considered. All records after 1st January 2001, included in the list, were confirmed by the current Slovenian Rarities Committee. Data collection for the period between 1st January 1800 and 31st December 1949 was centred on evaluating written sources, which were the basis for inclusion of a species into previous editions of the list. The data classification and taxonomy follow the recommendations of the British Ornithologists' Union. The list includes species observed at least once between 1st January 1800 and 31st December 2011. The list of birds recorded in Slovenia contains 380 species, of which 365 are in Category A, seven in Category B and eight in Category C. Category D contains six and Category E 29 species. These species are not part of the list. In comparison with the last version of the list published in 2001, 10 species recorded in Slovenia for the first time during this period were added. Two species were added because of taxonomic changes and five due to changes in species categories. Seven species were removed from the list owing to inaccurate information in historic written sources or misidentification.
INTRAOPERATIVE FLUORESCENCE DIAGNOSIS OF PERITONEAL DISSEMINATION IN PATIENTS WITH GASTRIC CANCER
Authors: Suleymanov E. A. , Kaprin A. D. , Filonenko E. V. , Homyakov V. M. , Grishin N. A. , Moskvicheva L. I. , Urlova A. N.
Published: May 2018

The study of diagnostic efficiency of intraoperative ﬂuorescence diagnosis (IOFD) of peritoneal dissemination in patients with gastric cancer comparing with standard laparoscopy was performed in P.A. Hertsen MCRI (the branch of NMRRC). The study included 114 patients with veriﬁed diagnosis of gastric cancer stage III–IV. For IOFD the domestic medication alasens (the active agent – 5-aminolevulinic acid) was used orally at dose of 30 mg/kg body weight 3 h prior to the study procedure. As the result of ﬂuorescence diagnosis 10 (6.9%) patients had peritoneal tumor dissemination veriﬁed morphologically and undetected by standard laporoscopy. The sensitivity of peritoneal revision for standard laparoscopy in patients with gastric cancer stage III–IV was 60.8%, the speciﬁcity – 75.8%, the overall accuracy – 69.1%. The sensitivity for IOFD in patients with gastric cancer stage III–IV was 91.1%, the speciﬁcity – 93.9%, the overall accuracy – 92.7%. Thus, ﬂuorescence study allowed improving the speciﬁcity, the sensitivity and the overall accuracy of diagnostic test. In the trial IOFD had the maximal diagnostic value in patients with visually undetectable microdissemination in «whight» light and with solitary visible peritoneal foci (the average number of additionally detected metastatic lesions in one patient – 1.22 and 1.4, respectively). Moreover, in the case of ﬂuorescence diagnosis the number of detected microfoci of peritoneal dissemination was showed to increase with enlargement of area of tumor invasion to gastric serosa (at average of 2.29 additionally detected lesions in one patient with serosal invasion more than 2 cm2). The obtained results conﬁrm the perspective of use of ﬂuorescence diagnosis for detection of peritoneal dissemination, determination of true tumor extent, staging of the tumor and also for adjustment of following treatment tactics for this group of patients.
Kajian Pola Pengobatan Tuberkulosis Paru di Puskesmas Rapak Mahang
Authors: Ningrum Yuriska Yudistia , Ibrahim Arsyik , Ardana Mirhansyah , Rusli Rolan
Published: May 2018

Penyakit tuberkulosis (TB) adalah penyakit menular langsung yang disebabkan oleh bakteri tuberkulosis (Mycobacterium tuberculosis). Penelitian ini bertujuan untuk mengetahui karakteristik, pola pengobatan dan keberhasilan pengobatan pada pasien TB paru di Puskesmas Rapak Mahang. Penelitian ini dilakukan dengan pendekatan retrospektif 57 data pasien TB paru. Hasil penelitian menunjukkan 58% laki-laki dan 42% perempuan penderita TB. Berdasarkan usia 61,5% terjadi pada usia dewasa, 35% pada usia lansia, dan 3,5% pada usia remaja. Berdasarkan kategori pengobatan 96% pasien termasuk dalam kategori 1 dan 4% termasuk dalam kategori 2. Berdasarkan hasil pengobatan sebanyak 84% pasien sembuh, 11% pasien gagal, dan 5% pasien meninggal. Pasien meninggal tidak dilakukan observasi lanjutan mengenai penyebab kematiannya.
Profil Penggunaan Antibiotik pada Pasien Ispa di Beberapa Puskesmas Kota Samarinda
Authors: Khairunnisa Rizki , Hajrah Hajrah , Rusli Rolan
Published: May 2018

Infeksi Saluran Pernapasan Akut (ISPA) adalah penyakit saluran pernapasan atas atau bawah yang berlangsung hingga 14 hari dan biasanya menular. Infeksi saluran pernapasan akut (ISPA) merupakan penyakit dengan prevalensi yang tinggi. Sebagian besar ISPA yang terjadi disebabkan oleh virus dan tidak memerlukan antibiotik. Penelitian ini bertujuan untuk mengetahui karakteristik serta pola penggunaan antibiotik pada pasien ISPA. Penelitian ini di lakukan secara retrospektif dengan mengambil data dari rekam medik pasien penderita ISPA sebanyak 221 pasien. Karakteristik pasien berdasarkan jenis kelamin diperoleh persentasi pasien laki-laki dan perempuan berturut-turut (45,25%) dan (54,75%). Pasien penderita ISPA paling banyak terjadi di usia 36-45 tahun (29,41%), 18-25 tahun (28,96%), 26-35 tahun (25,34%) dan 46-55 tahun (19,29%). Hasil diagnosa dokter meliputi influenza oleh virus (4,22%), influenza (virus tidak teridentifikasi) (18,99%), faringitis akut (45,15%), tonsillitis akut (24,48%), nesofaringitis akut (4,22%), bronkitis akut (0,42%), laringitis akut (0,42%), ISPA tidak dispesifikasi (1,26%) dan sinusitis akut (0,84%). Antibiotik yang digunakan adalah amoksisilin 500 mg (83,71%), amoksisilin 250 mg (0,45%), kotrimoksazol 480 mg (8,15%), kloramfenikol 250 mg (0,45%), siprofloksasin 500 mg (4,07%), sefadroksil 500 mg (2,72%) dan eritromisin 250 mg (0,90%). Berdasarkan hasil penelitian yang diperoleh maka dapat disimpulkan bahwa penderita ISPA lebih banyak terjadi pada perempuan dan antibiotik yang banyak digunakan sebagai terapi ISPA adalah amoksisilin 500 mg.
Penentuan Sifat Fisika, Kimia, dan Biologi Ekstrak Buah Libo (Ficus variegate Blume)
Authors: Ping Tirza Jeli , Rusli Rolan , Gama Sabaniah Indjar
Published: May 2018

Tumbuhan Libo (Ficus variegate Blume) memiliki kandungan kimia yaitu alkaloid, saponin dan Polifenol yang berpotensi sebagai antioksidan, sitotoksik, antibakteri dan, larvasida. Penentuan sifat fisika, kimia, dan biologi dari ekstrak tumbuhan Libo dilakukan untuk mengetahui baik atau tidaknya kualitas suatu bahan dan kegunaan atau manfaat dari bahan tersebut juga penerimaan dari masyarakat akan bahan tersebut menjadi baik atau tidak. Penentuan sifat fisika, kimia, dan biologi meliputi parameter penentuan organoleptik, penentuan kadar senyawa dalam pelarut tertentu (air/etanol), penentuan kadar air, penentuan kadar abu total, penentuan abu tidak larut asam, penentuan bobot jenis, penentuan total bakteri dan total kapang serta penentuan kadar logam berat dengan metode AAS. Hasil penentuan sifat fisika, kimia, dan biologi diperoleh sebagian besar nilai parameter telah sesuai dengan standar yang berlaku.
Aktivitas Antijamur Sediaan Gel dengan Bahan Aktif Ekstrak Etanol Daun Turi (Sesbania grandiflora L)
Authors: Arlita Yuyun , Maulidya Vina , Rijai Laode
Published: May 2018

Telah dilakukan penelitian uji aktivitas antijamur dari daun Sesbania grandiflora L yang bertujuan untuk mengetahui aktivitas antijamur dari daun Sesbania grandiflora L yaitu dengan mengamati zona hambat ekstrak dan sediaan gel terhadap jamur Malasezzia furfur. Aktivitas antijamur ekstrak ditentukan menggunakan metode difusi agar. Hasil penelitian menunjukkan bahwa ada penghambatan pertumbuhan jamur. Aktivitas antijamur ekstrak daun turi dengan konsentrasi 2,5%, 5%, 7,5% dan 10% diuji terhadap jamur Malasezzia furfur, konsentrasi terbaik terdapat pada konsentrasi 7,5% terhadap jamur Malasezzia furfur. Basis gel dibuat dengan konsentrasi  1%, 1,5% dan 2% dengan bahan utama carbopol, konsentrasi basis gel terbaik terdapat pada konsentrasi 1% yang diuji secara organoleptis dan fisik, kemudian dicampurkan basis 1% dengan eksstrak 2,5% dan diuji aktivitas antijamur. Zona hambat ekstrak dibandingkan dengan sediaan gel yang telah dibuat.
Heptacoordinate Co(II) Catalyst for Light-driven Hydrogen Production in Fully Aqueous Medium
Authors: Lucarini Fiorella , Ruggi Albert
Published: May 2018

Photocatalytic hydrogen production is an appealing way to store solar energy as chemical fuel. The most studied molecular catalysts for H2 production are based on earth-abundant metals such as Ni, Co and Fe. Efforts have been recently focused on the design of Co complexes
with distorted octahedral geometries induced by tetra- or pentapyridyl ligands. We synthesized a new Co(II) complex based on a hexapyridyl ligand that leads to the formation of an unusual heptacoordinate structure. In this paper, we review the characterization of the new catalyst and the optimization
of the conditions for hydrogen evolution. The high activity reached after two hours of irradiation under visible light (475 nm) suggests that heptacoordinate cobalt complexes, not used so far in the field of light-driven hydrogen evolution, represent a promising alternative platform for the development of highly active and stable photocatalysts.
Aluminum Dihydride Complexes and their Unexpected Application in Atomic Layer Deposition of Titanium Carbonitride Films
Authors: Blakeney Kyle J. , Martin Philip D. , Winter Charles H.
Published: May 2018

Aluminum dihydride complexes containing amido-amine ligands were synthesized and evaluated as potential reducing precursors for thermal atomic layer deposition (ALD). Highly volatile monomeric complexes AlH2(tBuNCH2CH2NMe2) and AlH2(tBuNCH2CH2NC4H8) are more thermally stable than common Al hydride thin film precursors such as AlH3(NMe3). ALD film growth experiments using TiCl4 and AlH2(tBuNCH2CH2NMe2) produced titanium carbonitride films with a high growth rate of 1.6-2.0 Å/cycle and resistivities around 600 μΩ·cm within a very wide ALD window of 220-400 °C. Importantly, film growth proceeded via self-limited surface reactions, which is the hallmark of an ALD process. Root mean square surface roughness was only 1.3 % of the film thickness at 300 °C by atomic force microscopy. The films were polycrystalline with low intensity, broad reflections corresponding to the cubic TiN/TiC phase according to grazing incidence X-ray diffraction. Film composition by X-ray photoelectron spectroscopy was approximately TiC0.8N0.5 at 300 °C with small amounts of Al (6 at%), Cl (4 at%) and O (4 at%) impurities. Remarkably, self-limited growth and low Al content was observed in films deposited well above the solid-state thermal decomposition point of AlH2(tBuNCH2CH2NMe2), which is ca. 185 °C. Similar growth rates, resistivities, and film compositions were observed in ALD film growth trials using AlH2(tBuNCH2CH2NC4H8).
Prolonged detection of dengue virus RNA in the semen of a man returning from Thailand to Italy, January 2018
Authors: Lalle Eleonora , Colavita Francesca , Iannetta Marco , Gebremeskel Teklè Saba , Carletti Fabrizio , Scorzolini Laura , Bordi Licia , Vincenti Donatella , Castilletti Concetta , Ippolito Giuseppe , Capobianchi Maria Rosaria , Nicastri Emanuele
Published: May 2018

This study reports the presence of dengue virus RNA in longitudinally collected semen samples of a previously healthy Caucasian man, returning to Italy from Thailand with primary dengue fever, up to 37 days post-symptom onset, when viraemia and viruria were undetectable. This finding, coupled with the evidence of dengue virus negative-strand RNA, an indirect marker of ongoing viral replication, in the cellular fraction of semen, indicates a need to further investigate possible sexual transmission.
Deformations of R.C.Circular Slabs in Fire Condition
Authors: Kassem Abdelraouf Tawfik
Published: May 2018

Reinforced concrete slabs are elements in direct contact with superimposed loads, having high surface area and small thickness. Such a condition makes slabs highly vulnerable to fire conditions. Fire results in exaggerated deformations in reinforced concrete slabs, as a result of material deterioration and thermal induced stresses. The main objective of this paper is to deeply investigate how circular R.C. slabs, of different configurations, behave in fire condition. That objective has been achieved through finite element modelling. Thermal-structural finite element models have been prepared, using "Ansys". Finite element models used solid elements to model both thermal and structural slab behaviour. Structural loads had been applied, representing slab operational loads, then thermal loads were applied in accordance with ISO 843 fire curve. Outputs in the form of deflection profile and edge rotation have been extracted out of the models to present slab deformations. A parametric study has been conducted to figure out the significance of various parameters such as; slab depth, slenderness ratio, load ratio, and opening size; regarding slab deformations. It was found that deformational behaviour differs significantly for slabs of thickness equal or below 100 mm, than slabs of thickness equal or above 200 mm. On the other hand considerable changes in slabs behaviour take place after 30 minutes of fire exposure for slabs of thickness equals or below 100 mm, while such changes delay till 60 minutes for slabs of thickness equals or above 200 mm.